Title: Fluid Connector and Inverter Assembly

FIELD

The present invention relates to an inverter assembly. The present invention further relates to fluid connectors coupled to a housing of the inverter assembly.

BACKGROUND

Vehicles, such as electric vehicles, hybrid vehicles, and the like, typically include an inverter assembly. The inverter assembly may include a variety of electrical and electronic components. The electrical and electronic components may include, for example, inductors, power modules such as batteries, fuel cells, or combinations thereof, computer chips, power circuits, printed circuit boards (PCBs), microprocessors, microcontrollers, etc. Such electrical and electronic components typically generate heat during operation. Heating of the electrical or electronic components may affect a performance of the inverter assembly, and in some cases, heating may also cause irreparable damage to the electrical or electronic components, which is not desirable. Further, heat generated during the operation of the electrical and electronic components may affect a performance of other components that are disposed proximal to the electrical or electronic components. Therefore, a cooling arrangement may be required for dissipating the heat generated by the electrical or electronic components.

The cooling arrangement typically includes a cooling passage disposed in a housing of the inverter assembly. A cooling fluid may flow through the cooling passage to cool one or more electrical or electronic components that are disposed proximal to the cooling passage. Further, the cooling fluid enters the cooling passage via a fluid inlet and exits the cooling passage via a fluid outlet. Typically, an inlet fluid connector is coupled to the fluid inlet for introducing the cooling fluid into the fluid inlet and an outlet fluid connector is coupled to the fluid outlet for receiving the cooling fluid from the fluid outlet.

Conventionally, the inlet and outlet fluid connectors are coupled to the housing via a number of mechanical fasteners, such as, bolts, screws, etc. In some cases, three or more mechanical fasteners may be required for connecting each of the inlet and outlet fluid connectors to the housing, which may increase assembly time and effort, and may also increase a number of parts associated with the inverter assembly. Alternatively, the inlet and outlet fluid connectors may be coupled to the housing via a threaded connection. For example, threads on the inlet and outlet fluid connectors may engage with threads defined on the housing. In such cases, the inlet and outlet fluid connectors may have to be rotated multiple times so that the inlet and outlet fluid connectors are appropriately engaged with the housing.

Conventional techniques of connecting the inlet and outlet fluid connectors to the housing may not be favorable for a high volume production set-up. More particularly, the connection of the inlet and outlet fluid connectors using mechanical fasteners or the threaded connection may be time consuming and may affect an overall efficiency of a production line. Further, the inlet and outlet fluid connectors itself may require additional tooling for assembly and disassembly. Moreover, conventional techniques of connecting the inlet and outlet fluid connectors may increase the assembly time and a manufacturing cost associated with the inverter assembly, which is not desirable. In some situations, such conventional techniques may not provide a leak proof joint, which is also not desirable.

Accordingly, there is a need in the art for an improved inverter assembly which may eliminate or minimize the various limitations of existing inverter assemblies. There is also a need for reducing an assembly time of inverter assemblies, reducing a number of parts associated with inverter assemblies, and reducing manufacturing costs of inverter assemblies. Further, it may be desirable to have inverter assemblies that are suitable for high volume production set-ups.

SUMMARY OF THE INVENTION

As noted above, there are a number of disadvantages associated with currently available techniques for connecting an inlet fluid connector and an outlet fluid connector to a housing of the inverter assembly. For example, some of the conventional techniques may require additional parts, such as multiple mechanical fasteners, which may increase cost and time associated with connection of the inlet and outlet fluid connectors with the housing. Further, conventional techniques of connecting the inlet and outlet fluid connectors with the housing may not provide a leak proof joint and may also increase a complexity associated with manufacturing of such inverter assemblies.

It is an objective of the present invention to provide an improved inverter assembly that may be easy to assemble and may improve a manufactur ability of the inverter assembly. In particular, it is an objective of the present invention to provide the inverter assembly including inlet and outlet fluid connectors that can be connected to a housing of the inverter assembly in a time efficient manner and may also reduce a number of parts required for connecting the inlet and outlet fluid connectors to the housing. Further, a connecting technique is contemplated that may be cost-effective and may reduce an assembly time of the inverter assembly. Moreover, it may be desirable to provide inverter assemblies that may be compact, lightweight, and leak proof.

According to a first aspect of the present invention, a fluid connector for a housing includes a tubular body extending along a longitudinal axis between a first end and a second end and including an outer surface. The outer surface includes a radial sealing region disposed proximal to the first end of the tubular body and configured to radially engage with the housing with respect to the longitudinal axis. The fluid connector also includes a plurality of helicoidal fins extending from the outer surface of the tubular body. The helicoidal fins are angularly spaced apart from each other and axially disposed between the radial sealing region and the second end of the tubular body with respect to the longitudinal axis. Each helicoidal fin extends helically along the longitudinal axis towards the radial sealing region. The fluid connector further includes an annular flange extending from the second end of the tubular body. The annular flange includes a first axial surface facing the tubular body and a second axial surface opposite to the first axial surface. The first axial surface includes an axial sealing region configured to axially engage with the housing along the longitudinal axis. The fluid connector includes a plurality of locking elements disposed adjacent to the annular flange opposite to the tubular body and angularly spaced apart from each other relative to the longitudinal axis. Each locking element is configured to be at least partially received in a corresponding opening of the housing to rotationally lock the fluid connector relative to the housing. Further, in a first angular orientation of the fluid connector relative to the housing, the tubular body is configured to be inserted at least partially within the housing and the fluid connector is rotatable relative to the housing. Moreover, upon a rotation of the fluid connector by a predetermined angle from the first angular orientation to a second angular orientation relative to the housing, the helicoidal fins engage corresponding cam projections of the housing to axially secure the fluid connector to the housing relative to the longitudinal axis. Further, the radial sealing region radially engages the housing, the axial sealing region axially engages the housing, and each locking element is at least partially received in the corresponding opening to rotationally lock the fluid connector relative to the housing. Moreover, during the rotation of the fluid connector from the first angular orientation to the second angular orientation, the helicoidal fins movably engage the housing, such that the rotation of the fluid connector results in a corresponding translation of the fluid connector into the housing along the longitudinal axis.

Optionally, the predetermined angle is 90 degrees.

Optionally, the fluid connector further includes a plurality of extensions corresponding to the plurality of helicoidal fins and disposed on the tubular body. Each extension extends axially from a corresponding helicoidal fin along the longitudinal axis towards the radial sealing region.

Optionally, the tubular body further includes an annular step axially disposed between the radial sealing region and the plurality of helicoidal fins.

Optionally, the fluid connector further includes a tubular coupler disposed in fluid communication with the tubular body. The tubular coupler is integral with or joined to the tubular body at the second end of the tubular body. Further, the tubular coupler extends from the annular flange and is configured to be coupled to a fluid conduit.

Optionally, the fluid connector further includes an annular projection extending radially from the tubular coupler adjacent to the annular flange. Each locking element extends radially from the annular projection.

Optionally, the tubular coupler is elbow-shaped.

Optionally, the tubular body further includes an annular body groove at the first end. The annular body groove is configured to receive a first sealing member therein.

Optionally, the annular flange further includes an annular flange groove surrounding the axial sealing region. The annular flange groove is configured to receive a second sealing member therein. Optionally, the plurality of helicoidal fins includes two helicoidal fins. Each of the two helicoidal fins includes an angular extent of 90 degrees about the longitudinal axis.

Optionally, each locking element includes a tapered end portion configured to be at least partially received in the corresponding opening.

Optionally, the plurality of locking elements includes two locking elements angularly separated from each other by 180 degrees.

According to a second aspect of the present invention, an inverter assembly includes a housing includes a cooling channel. The inverter assembly also includes a fluid inlet disposed in fluid communication with the cooling channel. The inverter assembly further includes a fluid outlet disposed in fluid communication with the cooling channel. The inverter assembly includes a first fluid connector of the first aspect. The first fluid connector is coupled to the housing and disposed in fluid communication with the fluid inlet. The first fluid connector is configured to supply a fluid to the fluid inlet. The inverter assembly also includes a second fluid connector of the first aspect. The second fluid connector is coupled to the housing and disposed in fluid communication with the fluid outlet. The second fluid connector is configured to receive the fluid from the fluid outlet.

Optionally, the housing includes a first connecting section configured to couple with the first fluid connector and a second connecting section configured to couple with the second fluid connector. Each of the first and second connecting sections includes an annular surface defining a passage configured to at least partially receive a respective fluid connector from the first and second fluid connectors therein. The annular surface includes an annular sealing region configured to engage with the radial sealing region of the respective fluid connector, wherein the passage is disposed in fluid communication with the respective fluid inlet or fluid outlet, and wherein the annular sealing region is disposed proximal to the respective fluid inlet or fluid outlet. Optionally, each of the first and second connecting sections also includes an annular end member disposed adjacent to the annular surface and distal to the respective fluid inlet or fluid outlet. The annular end member includes an axial sealing surface configured to engage with the axial sealing region of the respective fluid connector. The annular end member also includes a plurality of cam projections disposed adjacent to the axial sealing surface and angularly spaced apart from each other. Each cam projection extends radially inwards and includes a cam surface facing the annular surface. In the first angular orientation of the respective fluid connector, the plurality of cam projections allow insertion of the respective fluid connector within the annular end member and the annular surface. Further, in the second angular orientation of the respective fluid connector, each cam projection engages with a corresponding helicoidal fin from the plurality of helicoidal fins of the respective fluid connector to axially secure the respective fluid connector to the housing. Moreover, during rotation of the respective fluid connector from the first angular orientation to the second angular orientation, the cam surface of each cam projection is configured to movably engage with the corresponding helicoidal fin of the respective fluid connector to translate the respective fluid connector towards the annular surface. The annular end member further includes a plurality of locking tabs disposed adjacent to the axial sealing surface opposite to the plurality of cam projections. In the second angular orientation of the respective fluid connector, each locking tab defines an opening configured to at least partially receive therethrough a corresponding locking element from the plurality of locking elements of the respective fluid connector to rotationally lock the respective fluid connector with respect to the housing.

Optionally, the annular surface includes one or more steps axially disposed between the annular sealing region and the annular end member.

Optionally, the annular end member further includes a plurality of axial stops angularly spaced apart from each other and axially disposed between the plurality of cam projections and the annular surface. Further, each axial stop extends radially inwards.

Optionally, the annular end member further includes a plurality of axial ribs angularly spaced apart from each other. Each axial rib axially extends from a corresponding cam projection from the plurality of cam projections to a corresponding axial stop from the plurality of axial stops.

Optionally, the annular end member is at least partially disposed externally relative to the housing, such that, in a coupled state of the respective fluid connector, at least the second axial surface of the annular flange and the plurality of locking elements of the respective fluid connector are disposed externally relative to the housing.

Optionally, the annular end member further includes a plurality of angular cutouts angularly spaced apart from each other. Each angular cutout is angularly disposed between adjacent cam projections. In the first angular orientation of the respective fluid connector, each angular cutout is angularly aligned with a corresponding helicoidal fin from the plurality of helicoidal fins of the respective fluid connector to allow insertion of the respective fluid connector within the annular end member and the annular surface. Further, in the second angular orientation of the respective fluid connector, the plurality of helicoidal fins are angularly misaligned with the plurality of helicoidal fins.

Optionally, each of the first and second fluid connectors is a single integral part.

As discussed above, conventional techniques of connecting the fluid connectors with the housing may have some disadvantages. Specifically, the conventional techniques may be time consuming, may involve usage of multiple parts, and may be costly. The present disclosure describes an improved design of the inverter assembly that may have a simple construction and may be easy to assemble and disassemble. Further, the first and second fluid connectors described herein may reduce a time and a cost associated with assembling and disassembling of the first and second fluid connectors to the housing, while improving a manufactur ability of the inverter assembly. Additionally, the first and second fluid connectors may be assembled or disassembled without requirement of additional tooling for assembly and disassembly.

The first and second fluid connectors described herein may provide axial as well as radial sealing thereby providing a leak proof connection between the housing and the respective first and second fluid connectors. Moreover, standard O -rings may be used for sealing the first and second fluid connectors to the housing. Further, the first and second fluid connectors may be embodied as cost-effective injection molded parts, thereby reducing a manufacturing cost associated with the inverter assembly. Use of the first and second fluid connectors may also reduce or eliminate a number of additional parts, such as, multiple mechanical fasteners, required for conventional connecting techniques. Further, a technique of connecting the first and second fluid connectors as described herein may reduce the manufacturing cost of the inverter assembly while improving an efficiency of a production line.

The present invention will be further elucidated with reference to figures of exemplary embodiments. The embodiments may be combined or may be applied separately from each other.

BRIEF DESCRIPTION OF THE FIGURES

Same reference numerals refer to same elements or elements of similar function throughout the various figures. Furthermore, only reference numerals necessary for the description of the respective figure are shown in the figures. The shown embodiments represent only examples of how the invention can be carried out. This should not be construed as a limitation of the invention. For a better understanding of the invention, and to show more clearly how it may be carried into effect, reference will now be made, by way of example only, to the accompanying drawings, in which:

Fig. 1 shows a top perspective view of an inverter assembly in accordance with an embodiment of the present invention;

Fig. 2 shows a perspective view of a first connecting section and a second connecting section of a housing of the inverter assembly of Fig. 1 in accordance with an embodiment of the present invention;

Figs. 3 and 4 show different perspective views of a first fluid connector of the inverter assembly of Fig. 1 in accordance with an embodiment of the present invention;

Fig. 5 shows a sectional perspective view of the first fluid connector of Figs. 3 and 4 at least partially received within the housing in a first angular orientation in accordance with an embodiment of the present invention;

Fig. 6 shows a sectional perspective view of the first fluid connector of Figs. 3 and 4 connected to the housing in a second angular orientation in accordance with an embodiment of the present invention;

Figs. 7 and 8 show different perspective views of a second fluid connector of the inverter assembly of Fig. 1 in accordance with an embodiment of the present invention;

Fig. 9 shows a sectional perspective view of the second fluid connector of Figs. 7 and 8 at least partially received within the housing in a first angular orientation in accordance with an embodiment of the present invention; and

Fig. 10 shows a sectional perspective view of the second fluid connector of Figs. 7 and 8 connected to the housing in a second angular orientation in accordance with an embodiment of the present invention. DETAILED DESCRIPTION OF THE FIGURES

In this application similar or corresponding features are denoted by similar or corresponding reference signs. The description of the various embodiments is not limited to the examples shown in the figures and the reference numbers used in the detailed description and the claims are not intended to limit the description of the embodiments, but are included to elucidate the embodiments by referring to the example shown in the figures.

As noted above, there is a need in the art for an improved inverter assembly and method of assembling the same, and in particular, an improved inverter assembly which eliminates or minimizes the various limitations of existing inverter assemblies. Further, there is a need for reducing time required in an assembly process of the inverter assembly to meet demands of high volume production and also reducing a manufacturing cost of the inverter assembly.

Fig. 1 illustrates a top perspective view of an inverter assembly 100, according to an embodiment of the present disclosure. The inverter assembly 100 may be associated with a vehicle (not shown), such as, an electric vehicle, a hybrid vehicle, and the like. In an example, the inverter assembly 100 may be coupled with a drive train unit of the vehicle. The inverter assembly 100 may provide three phase voltages to the drive train unit.

The inverter assembly 100 may include one or more electrical components (not shown) and/or electronic components (not shown). For example, the inverter assembly 100 may include an inductor, and/or a power module such as batteries, fuel cells, or combinations thereof. Further, the inverter assembly 100 may include computer chips, power circuits, one or more printed circuit boards (PCBs), microprocessors, microcontrollers, and the like. Moreover, the inverter assembly 100 may include various electromagnetic interference (EMI) filtering devices, such as an EMI shield. The inverter assembly 100 may include an arrangement to dissipate a heat generated by the electrical components and/or electronic components during an operation thereof. Accordingly, the inverter assembly 100 includes a housing 102 including a cooling channel 104. Further, the inverter assembly 100 also includes a first fluid connector 400 and a second fluid connector 800. The first fluid connector 400 may be interchangeably referred to as a fluid connector 400 and the second fluid connector 800 may be interchangeably referred to as a fluid connector 800. The fluid connector 400 is rotatable between a first angular orientation (as illustrated in Fig. 5) and a second angular orientation (as illustrated in Fig. 6), and the fluid connector 800 is rotatable between a first angular orientation (as illustrated in Fig. 9) and a second angular orientation (as illustrated in Fig. 10). The first angular orientation may be representative of a non-coupled state of the respective fluid connector 400, 800 with the housing 102. Moreover, the second angular orientation may be representative of a coupled state of the respective fluid connector 400, 800 with the housing 102. The first and second fluid connectors 400, 800 will be explained in detail later in this section.

As illustrated in Fig. 1, the housing 102 defines a first side 106 and a second side 108 opposite to the first side 106. The housing 102 of the inverter assembly 100 may be substantially rectangular in shape. The housing 102 defines a length LI, a width W 1, and a height (not shown). The length LI, the width W 1, and the height may be selected based on application requirements. The housing 102 may be embodied as a one-piece integral cast component. Alternatively, various components of the housing 102 may be manufactured as separate parts that are assembled by a suitable joining process. For example, the cooling channel 104 may form a part of a separate cooling circuit that is installed within the housing 102. The housing 102 may be manufactured using a die casting technique. Further, an alloy may be used to manufacture the housing 102. In an embodiment, the housing 102 may be made from an aluminum based alloy. In other embodiments, the housing 102 may be made of one or more of a zinc based alloy, a copper based alloy, a magnesium based alloy, a tin based alloy, and the like. It should be noted that the housing 102 may be manufactured using any other technique and/or material, without any limitations.

The housing 102 may allow mounting of the electrical components and/or electronic components of the inverter assembly 100. Typically, the electrical and/or electronic components may be arranged such that they are in alignment with the cooling channel 104 to establish a heat transfer between the electrical and/or electronic components and a fluid flowing through the cooling channel 104. The fluid may include any coolant that facilitates heat transfer. The fluid may include water, a mixture of glycol and water, and the like. It should be noted that any other fluid may flow through the cooling channel 104, without limiting the scope of the present disclosure.

Further, the cooling channel 104 is substantially U-shaped. The cooling channel 104 extends from a major surface 110 of the housing 102. Specifically, the cooling channel 104 is at least partially defined by a first side surface 112, a second side surface 114, and a bottom surface 116. The first side surface 112 includes a plurality of first projections 118 and the second side surface 114 includes a plurality of second projections 120. The first and second projections 118, 120 may increase a rate of heat transfer between the electrical and/or electronic components and the fluid. In the illustrated embodiment of Fig. 1, each first projection 118 has a convex shape, and each second projection 120 has a convex shape. In other embodiments, the first projections 118 and the second projections 120 may include any other shape, such as, a concave shape, a square shape, a rectangular shape, a triangular shape, and the like, without any limitations. The housing 102 further includes a plurality of fins 122 extending from the bottom surface 116 into the cooling channel 104. The fins 122 may increase the rate of heat transfer between the electrical and/or electronic components and the fluid. Specifically, the fins 122 may increase the surface area of the cooling channel 104 which may in turn improve the rate of heat transfer between the electrical and/or electronic components and the fluid. The fins 122 include an elliptical cross-section and an elongated elliptical cross-section herein. Alternatively, the fins 122 may include any other cross-section such as, a square shape, a rectangular shape, a triangular shape, and the like, without any limitations.

The inverter assembly 100 may further include a cover (not shown) connected to the housing 102 for covering the cooling channel 104. The cover may be connected to the housing 102 by mechanical fasteners, welding, brazing, soldering, and the like. In an example, the cover of the inverter assembly 100 may be substantially U-shaped and may correspond to the shape of the cooling channel 104. In another example, the cover of the inverter assembly 100 may be substantially rectangular in shape and may correspond to a shape of the major surface 110.

Moreover, the housing 102 may include one or more mounting brackets 124. The mounting brackets 124 may assist in mounting of the inverter assembly 100. Each mounting bracket 124 may define a through- hole to receive a mechanical fastener (not shown) such as a screw, a bolt, a rivet, and the like. In the illustrated embodiment of Fig. 1, the inverter assembly 100 includes four mounting brackets 124, without limiting the scope of the present disclosure.

The inverter assembly 100 also includes a fluid inlet 126 (shown in Figs. 5 and 6) disposed in fluid communication with the cooling channel 104. The fluid inlet 126 is configured to receive the fluid from a first fluid conduit 128. The first fluid conduit 128 may be interchangeably referred to as a fluid conduit 128. Specifically, the fluid inlet 126 is fluidly coupled to the cooling channel 104 to allow introduction of the fluid within the cooling channel 104. The fluid inlet 126 may be defined proximal to the first side 106 of the housing 102. In an example, the housing 102 may include an inlet member (not shown) that defines the fluid inlet 126. The inlet member may be in fluid communication with the cooling channel 104.

The inverter assembly 100 further includes a fluid outlet 130 (shown in Figs. 9 and 10) disposed in fluid communication with the cooling channel 104. The fluid outlet 130 is configured to direct the fluid towards a second fluid conduit 132. The second fluid conduit 132 may be interchangeably referred to as a fluid conduit 132. Specifically, the fluid outlet 130 is fluidly coupled to the cooling channel 104 to allow exit of the fluid from the cooling channel 104. The fluid outlet 130 may be coupled to the housing 102 proximal to the second side 108 of the housing 102. In an example, the housing 102 may include an outlet member (not shown) that defines the fluid outlet 130. The outlet member may be in fluid communication with the cooling channel 104.

Further, the housing 102 includes a first connecting section 134 configured to couple with the first fluid connector 400 and a second connecting section 136 configured to couple with the second fluid connector 800. The first connecting section 134 is disposed at the first side 106 of the housing 102 and the second connecting section 136 is disposed at the second side 108 of the housing 102. The first connecting section 134 and the second connecting section 138 may be arranged symmetrically to each other with respect to the housing 102. In some examples, a design of the first connecting section 134 may be substantially similar to a design of the second connecting section 136. In some examples, dimensions of the first connecting section 134 may be substantially similar to dimensions of the second connecting section 136. The first and second connecting sections 134, 136 will now be explained in detail in relation to Fig. 2. Referring to Fig. 2, each of the first and second connecting sections 134, 136 includes an annular surface 138 defining a passage 140 configured to at least partially receive a respective fluid connector 400, 800 (see Fig. 1) from the first and second fluid connectors 400, 800 therein. Further, the passage 140 is disposed in fluid communication with the respective fluid inlet 126 or fluid outlet 130. The annular surface 138 includes an annular sealing region 142 configured to engage with a radial sealing region 410, 810 (shown in Figs. 3 and 7, respectively) of the respective fluid connector 400, 800. Moreover, the annular sealing region 142 is disposed proximal to the respective fluid inlet 126 or fluid outlet 130. The annular surface 138 includes one or more steps 144 axially disposed between the annular sealing region 142 and an annular end member 146. In the illustrated embodiment of Fig. 2, the annular surface 138 includes two steps 144. The steps 144 divide the annular surface 138 into three stepped portions of varying diameters.

Further, each of the first and second connecting sections 134, 136 includes the annular end member 146 disposed adjacent to the annular surface 138 and distal to the respective fluid inlet 126 or fluid outlet 130. The annular end member 146 may be at least partially disposed externally relative to the housing 102, such that, in the coupled state of the respective fluid connector 400, 800, at least a second axial surface 432, 832 (shown in Figs. 3 and 7, respectively) of an annular flange 428, 828 (shown in Figs. 3 and 7, respectively) and a plurality of locking elements 438, 838 (shown in Figs. 3 and 7, respectively) of the respective fluid connector 400, 800 are disposed externally relative to the housing 102. The annular end member 146 includes an axial sealing surface 148 configured to engage with an axial sealing region 434, 834 (shown in Figs. 3 and 7, respectively) of the respective fluid connector 400, 800.

Further, the annular end member 146 also includes a plurality of cam projections 150 disposed adjacent to the axial sealing surface 148 and angularly spaced apart from each other. Each cam projection 150 extends radially inwards and includes a cam surface 152 facing the annular surface 138. The cam surface 152 defines a tapering profile, such that a thickness of each cam projection 150 reduces progressively along a circumference of a corresponding cam projection 150. The cam projections 150 together define a diameter DI therebetween. Further, in the first angular orientation of the respective fluid connector 400, 800, the plurality of cam projections 150 allow insertion of the respective fluid connector 400, 800 within the annular end member 146 and the annular surface 138. Furthermore, in the second angular orientation of the respective fluid connector 400, 800, each cam projection 150 engages with a corresponding helicoidal fin 414, 814 (shown in Figs. 3 and 7, respectively) from a plurality of helicoidal fins 414, 814 of the respective fluid connector 400, 800 to axially secure the respective fluid connector 400, 800 to the housing 102. Moreover, during the rotation of the respective fluid connector 400, 800 from the first angular orientation to the second angular orientation, the cam surface 152 of each cam projection 150 is configured to movably engage with the corresponding helicoidal fin 414, 814 of the respective fluid connector 400, 800 to translate the respective fluid connector 400, 800 towards the annular surface 138.

The annular end member 146 further includes a plurality of locking tabs 154 disposed adjacent to the axial sealing surface 148 opposite to the plurality of cam projections 150. In the illustrated embodiment of Fig. 2, the annular end member 146 includes a pair of locking tabs 154 that are disposed diametrically opposite to each other. The locking tabs 154 are coupled to the housing 102 such that during the coupling and/or removal of the respective fluid connector 400, 800, the locking tabs 154 may move radially outwards and radially inwards, respectively, by a small amount. It should be noted that the locking tabs 154 are connected to the housing 102 such that each locking tab 154 may deflect radially for receipt of a corresponding locking element 438, 838. Further, each locking tab 154 defines an opening 156. In the second angular orientation of the respective fluid connector 400, 800, each locking tab 154 defines the opening 156 configured to at least partially receive therethrough a corresponding locking element 438, 838 from the plurality of locking elements 438, 838 of the respective fluid connector 400, 800 to rotationally lock the respective fluid connector 400, 800 with respect to the housing 102. The opening 156 is substantially rectangular in shape. Alternatively, the opening 156 may include any other shape, without any limitations. The openings 156 are embodied as through openings herein. Alternatively, the locking tabs 154 may define a cavity that engages with a corresponding locking element 438, 838, without any limitations.

Moreover, the annular end member 146 further includes a plurality of axial stops 158 angularly spaced apart from each other and axially disposed between the plurality of cam projections 150 and the annular surface 138. Each axial stop 158 extends radially inwards. In the illustrated embodiment of Fig, 2, the annular end member 146 includes a pair of axial stops 158. The pair of axial stops 158 together define a diameter D2 therebetween. The annular end member 146 further includes a plurality of axial ribs 160 angularly spaced apart from each other. Each axial rib 160 axially extends from a corresponding cam projection 150 from the plurality of cam projections 150 to a corresponding axial stop 158 from the plurality of axial stops 158. Further, each axial rib 160 extends circumferentially along a portion of a corresponding cam projection 150. The cam projection 150 and a corresponding axial rib 160 together define a slot 164. In the second angular orientation of the fluid connector 400, 800, the slot 164 receives a corresponding helicoidal fin 414, 814. Each of the first and second connecting sections 134, 136 defines two slots 164.

The annular end member 146 further includes a plurality of angular cutouts 162 angularly spaced apart from each other. Each angular cutout 162 is angularly disposed between adjacent cam projections 150. The angular cutout 162 defines a length L2. In the illustrated embodiment of Fig. 2, the annular end member 146 includes two angular cutouts 162 disposed diametrically opposite to each other. In the first angular orientation of the respective fluid connector 400, 800, each angular cutout 162 is angularly aligned with a corresponding helicoidal fin 414, 814 from the plurality of helicoidal fins 414, 814 of the respective fluid connector 400, 800 to allow insertion of the respective fluid connector 400, 800 within the annular end member 146 and the annular surface 138. Moreover, in the second angular orientation of the respective fluid connector 400, 800, the plurality of helicoidal fins 414, 814 are angularly misaligned with each angular cutout 162.

As shown in Fig. 1, the present disclosure relates to the fluid connectors 400, 800 for the housing 102. Specifically, the inverter assembly 100 includes the first fluid connector 400. The first fluid connector 400 is coupled to the housing 102 and disposed in fluid communication with the fluid inlet 126 (see Figs. 5 and 6). The first fluid connector 400 is configured to supply the fluid to the fluid inlet 126. The first fluid connector 400 may be coupled to the housing 102 proximal to the first side 106 of the housing 102. The first fluid connector 400 engages with the first connecting section 134 such that the first fluid connector 400 is fluidly coupled to the fluid inlet 126.

The inverter assembly 100 also includes the second fluid connector 800. The second fluid connector 800 is coupled to the housing 102 and disposed in fluid communication with the fluid outlet 130 (see Figs. 5 and 6). The second fluid connector 800 is configured to receive the fluid from the fluid outlet 130. The second fluid connector 800 may be coupled to the housing 102 proximal to the second side 108 of the housing 102. The second fluid connector 800 engages with the second connecting section 136 such that the second fluid connector 800 is fluidly coupled to the fluid outlet 130. Each of the first and second fluid connectors 400, 800 is a single integral part. The first and second fluid connector 400, 800 may be manufactured from metals or plastics. In some examples, material of the first and second fluid connector 400, 800 may be similar to the material of the housing 102. Further, the first and second fluid connectors 400, 800 may be manufactured by an injection molding process, when the first and second fluid connectors 400, 800 are made from plastics, or a die-casting process, when the first and second fluid connectors 400, 800 are made from metals.

Referring to Figs. 3 and 4, the first fluid connector 400 includes a tubular body 402 extending along a longitudinal axis X-Xl between a first end 404 and a second end 406 (shown in Fig. 3) and including an outer surface 408. The tubular body 402 may include a circular cross-section. Further, the outer surface 408 includes the radial sealing region 410 disposed proximal to the first end 404 of the tubular body 402 and configured to radially engage with the housing 102 (see Fig. 1) with respect to the longitudinal axis X-Xl. The tubular body 402 further includes an annular step 412 axially disposed between the radial sealing region 410 and the plurality of helicoidal fins 414. The tubular body 402 further includes an annular body groove 416 at the first end 404. The annular body groove 416 may be configured to receive a first sealing member 417 (shown in an exploded form in Fig. 3) therein. The first sealing member 417 may include an O-ring, without any limitations.

The first fluid connector 400 also includes the plurality of helicoidal fins 414 extending from the outer surface 408 of the tubular body 402. The helicoidal fins 414 are angularly spaced apart from each other and axially disposed between the radial sealing region 410 and the second end 406 of the tubular body 402 with respect to the longitudinal axis X-Xl. Each helicoidal fin 414 extends helically along the longitudinal axis X-Xl towards the radial sealing region 410. In the illustrated embodiment of Figs. 3 and 4, the plurality of helicoidal fins 414 includes two helicoidal fins 414. It may be contemplated that the first fluid connector 400 may include more than two helicoidal fins or a single helicoidal fin, without any limitations. The pair of helicoidal fins 414 together define a diameter D3 (shown in Fig. 4) such that the diameter D3 is lesser than the diameter D2 (see Fig. 2) defined by the pair of axial stops 158 (see Fig. 2). Thus, the axial stops 158 may act as limit stops to restrict any further movement of the helicoidal fins 414 of the first fluid connector 400 within the first connecting section 134 (see Figs. 1 and 2) along the longitudinal axis X-Xl during a coupling of the first fluid connector 400 with the housing 102. Further, in some examples, the length L2 (see Fig. 2) defined by each angular cutout 162 (see Fig. 2) is substantially equal to a length L3 of each helicoidal fin 414 so that the angular cutout 162 may allow receipt of a corresponding helicoidal fin 414 therein.

The helicoidal fins 414 are disposed diametrically opposite to each other. Each of the two helicoidal fins 414 includes an angular extent Al (shown in Fig. 3) of 90 degrees about the longitudinal axis X-Xl. Each helicoidal fin 414 has a first portion 418 (shown in Fig. 3) and a second portion 420 (shown in Fig. 3) angularly extending from the first portion 418. Further, the first fluid connector 400 includes a plurality of extensions 422 (one of which is shown in Fig. 3) corresponding to the plurality of helicoidal fins 414 and disposed on the tubular body 402. Each extension 422 extends axially from the corresponding helicoidal fin 414 along the longitudinal axis X-Xl towards the radial sealing region 410. Specifically, the first fluid connector 400 includes two extensions 422. Each extension 422 extends from the first portion 418 of a corresponding helicoidal fin 414. Further, each helicoidal fin 414 defines an outer axial surface 424 (shown in Fig. 3) and an inner axial surface 426, such that the extension 422 extends from the inner axial surface 426 of the helicoidal fin. The inner axial surface 426 faces the radial sealing region 410. The first fluid connector 400 further includes the annular flange 428 extending from the second end 406 of the tubular body 402. The annular flange 428 defines a diameter D4. The annular flange 428 includes a first axial surface 430 facing the tubular body 402 and the second axial surface 432 opposite to the first axial surface 430. The first axial surface 430 includes the axial sealing region 434 configured to axially engage with the housing 102 along the longitudinal axis X-Xl. The annular flange 428 further includes an annular flange groove 436 surrounding the axial sealing region 434. The annular flange groove 436 is configured to receive a second sealing member 437 (shown in an exploded form in Fig. 3) therein. The second sealing member 437 may include an O-ring, without any limitations. The outer axial surface 424 of each helicoidal fin 414 faces the axial sealing region 434.

Further, the first fluid connector 400 includes the plurality of locking elements 438 disposed adjacent to the annular flange 428 opposite to the tubular body 402 and angularly spaced apart from each other relative to the longitudinal axis X-Xl. In some examples, the locking elements 438 may contact the second axial surface 432 of the annular flange 428. In the illustrated embodiment of Figs. 3 and 4, the plurality of locking elements 438 includes two locking elements 438 angularly separated from each other by 180 degrees. It may be contemplated that the first fluid connector 400 may include more than two locking elements or a single locking element, without any limitations. The pair of locking elements 438 together define a diameter D5 that is greater than the diameter D4 defined by the annular flange 428. Moreover, each of the diameters D4, D5 is greater than the diameter DI (see Fig. 2) defined by the cam projections 150 (see Fig. 2). Each locking element 438 is configured to be at least partially received in a corresponding opening 156 (see Fig. 2) of the housing 102 to rotationally lock the first fluid connector 400 relative to the housing 102. Further, each locking element 438 includes a tapered end portion 440 configured to be at least partially received in the corresponding opening 156. The tapered end portion 440 is wedge shaped and is defined by a chamfer 442 provided on a corresponding locking element 438.

The first fluid connector 400 further includes a tubular coupler 444 disposed in fluid communication with the tubular body 402. The tubular coupler 444 includes a circular cross-section. One end 446 of the tubular coupler 444 may be connected to the tubular body 402. Further, another end 448 (shown in Fig. 4) of the tubular coupler 444 may be connected to the first fluid conduit 128 (see Fig. 1). The tubular coupler 444 may be elbowshaped. The tubular coupler 444 and the tubular body 402 may together define a hollow passage 450 (shown in Fig. 4) for the fluid to flow therethrough. The tubular coupler 444 may be integral with or joined to the tubular body 402 at the second end 406 of the tubular body 402. In the illustrated embodiment of Figs. 3 and 4, the tubular coupler 444 is integral with the tubular body 402. More particularly, the end 446 of the tubular coupler 444 is integral with the second end 406 of the tubular body 402. The tubular coupler 444 extends from the annular flange 428 and is configured to be coupled to the first fluid conduit 128 (shown in Fig. 1). The first fluid connector 400 further includes an annular projection 452 (shown in Fig. 3) extending radially from the tubular coupler 444 adjacent to the annular flange 428. Each locking element 438 extends radially from the annular projection 452.

The first fluid connector 400 is rotatable between the first angular orientation (as illustrated in Fig. 5) and the second angular orientation (as illustrated in Fig. 6). In the first and second angular orientations of the first fluid connector 400, the second axial surface 432 of the annular flange 428 and the plurality of locking elements 438 of the first fluid connector 400 are disposed externally relative to the housing 102. Specifically, as the diameters D4, D5 are greater than the diameter DI defined by the cam projections 150, the cam projections 150 may not allow insertion of the annular flange 428 or the locking elements 438 within the passage 140 (see Fig. 2).

Referring to Fig. 5, in the first angular orientation of the first fluid connector 400 relative to the housing 102, the tubular body 402 is configured to be inserted at least partially within the housing 102 and the first fluid connector 400 is rotatable relative to the housing 102. In the first angular orientation of the first fluid connector 400, each angular cutout 162 receives a corresponding helicoidal fin 414. Further, the helicoidal fins 414 are misaligned with each cam projection 150 (see Fig. 2) in the first angular orientation of the first fluid connector 400 so that the first fluid connector 400 may be inserted within the annular end member 146 and the annular surface 138. Moreover, in the first angular orientation, the inner axial surface 426 of each helicoidal fin 414 may be disposed proximal to a corresponding axial stop 158 from the pair of axial stops 158. It should be noted that the first fluid connector 400 may be inserted within the housing 102 until the first fluid connector 400 engages with the axial stops 158. More particularly, as the diameter D3 defined by the helicoidal fins 414 is greater than the diameter D2 defined by the pair of axial stops 158, the axial stops 158 may act as axial limit stops to restrict further insertion of the first fluid connector 400 within the first connecting section 134.

For coupling the first fluid connector 400 with the housing 102, the first fluid connector 400 may be rotated in an anti-clockwise direction Cl to move the first fluid connector 400 from the first angular orientation to the second angular orientation. The first fluid connector 400 may be rotated based on gripping of the tubular coupler 444 by a personnel or an automated machine. In an example, the first fluid connector 400 may be rotatable by a predetermined angle A2 (shown in Fig. 2) from the first angular orientation to the second angular orientation. In some embodiments, the predetermined angle A2 may be 90 degrees. Further, during the rotation of the first fluid connector 400 from the first angular orientation to the second angular orientation, the helicoidal fins 414 movably engage the housing 102, such that the rotation of the first fluid connector 400 results in a corresponding translation of the first fluid connector 400 into the housing 102 along the longitudinal axis X-Xl. It should be noted that, during the rotation of the first fluid connector 400 from the first angular orientation to the second angular orientation, the cam projections 150 may provide a guiding feature to enable correct assembly of the first fluid connector 400.

Moreover, the first fluid connector 400 may be rotated within the housing 102 in the anti-clockwise direction Cl until each helicoidal fin 414 engages with a corresponding axial rib 160 (see Fig. 2). The axial ribs 160 may restrict any further rotational movement of the first fluid connector 400 thereby indicating that the first fluid connector 400 is in the second angular orientation. A design of the first fluid connector 400 and the housing 102 may eliminate incorrect assembly or rotation of the first fluid connector 400. Specifically, the axial ribs 160 may act as rotational limit stops that prevent incorrect rotation and/or assembly of the first fluid connector 400. For example, the axial ribs 160 may prevent the rotation of the first fluid connector 400 in a clockwise direction C2.

Referring to Fig. 6, upon the rotation of the first fluid connector 400 by the predetermined angle A2 (see Fig. 2) from the first angular orientation to the second angular orientation relative to the housing 102, the helicoidal fins 414 engage corresponding cam projections 150 of the housing 102 to axially secure the first fluid connector 400 to the housing 102 relative to the longitudinal axis X-Xl. In particular, the outer axial surface 424 (see Fig. 3) of each helicoidal fin 414 may engage with a corresponding cam surface 152 from the pair of cam surfaces 152. Further, in the second angular orientation of the first fluid connector 400, each helicoidal fin 414 is received within a corresponding slot 164 from the pair of the slots 164. Moreover, in the second angular orientation of the first fluid connector 400, the plurality of helicoidal fins 414 are angularly misaligned with each angular cutout 162 (see Fig. 2). Such a feature may eliminate unintentional removal of the first fluid connector 400.

Further, in the second angular orientation, the radial sealing region 410 radially engages the housing 102. Specifically, the radial sealing region 410 may engage with the annular sealing region 142 of the housing 102. Furthermore, in the second angular orientation, the axial sealing region 434 axially engages the housing 102. Specifically, the axial sealing region 434 may engage with the axial seahng surface 148 of the housing 102. Additionally, in the second angular orientation, each locking element 438 is at least partially received in a corresponding opening 156 to rotationally lock the first fluid connector 400 relative to the housing 102. Specifically, the locking elements 438 may move radially outwards as the first fluid connector 400 moves from the first angular orientation to the second angular orientation for receipt of the tapered end portion 440 of the locking element 438 within the corresponding opening 156 of the locking tab 154. Once the tapered end portion 440 is received within the corresponding opening 156, the locking elements 438 may move radially inwards to return to their original position.

Thus, the present disclosure provides a dual locking system for the first fluid connector 400. Specifically, the helicoidal fins 414 that engage with the cam projections 150 provide a first locking feature, whereas the locking elements 438 that engage with the locking tabs 154 provide a second locking feature. Such a dual locking system may eliminate unintentional removal of the first fluid connector 400 while the inverter assembly 100 is in use. Further, the dual locking system may both axially and rotationally lock the first fluid connector 400 within the housing 102 and prevent any undesired movement of the first fluid connector 400 relative to the housing 102 during use.

Moreover, when the first fluid connector 400 is to be disassembled from the housing 102, the locking elements 438 may be first disengaged from the corresponding locking tabs 154 by moving the locking tabs 154 radially outwards. Then, the first fluid connector 400 may be gripped and turned in the clockwise direction C2 to move the first fluid connector 400 from the second angular orientation to the first angular orientation. Once the first fluid connector 400 is in the first angular orientation and the helicoidal fins 414 align with the corresponding angular cutouts 162, the first fluid connector 400 may be removed from the housing 102.

Referring to Figs. 7 and 8, the second fluid connector 800 includes a tubular body 802 extending along a longitudinal axis Y-Yl between a first end 804 and a second end 806 (shown in Fig. 7) and including an outer surface 808. The tubular body 802 may include a circular cross-section. Further, the outer surface 808 includes the radial sealing region 810 disposed proximal to the first end 804 of the tubular body 802 and configured to radially engage with the housing 102 (see Fig. 1) with respect to the longitudinal axis Y-Yl. The tubular body 802 further includes an annular step 812 axially disposed between the radial sealing region 810 and the plurality of helicoidal fins 814. The tubular body 802 further includes an annular body groove 816 at the first end 804. The annular body groove 816 may be configured to receive a first sealing member 817 (shown in an exploded form in Fig. 7) therein. The first sealing member 817 may include an O-ring, without any limitations.

The second fluid connector 800 also includes the plurality of helicoidal fins 814 extending from the outer surface 808 of the tubular body 802. The helicoidal fins 814 are angularly spaced apart from each other and axially disposed between the radial sealing region 810 and the second end 806 of the tubular body 802 with respect to the longitudinal axis Y-Yl. Each helicoidal fin 814 extends helically along the longitudinal axis Y-Yl towards the radial sealing region 810. In the illustrated embodiment of Figs. 7 and 8, the plurality of helicoidal fins 814 includes two helicoidal fins 814. It may be contemplated that the second fluid connector 800 may include more than two helicoidal fins or a single helicoidal fin, without any limitations. The pair of helicoidal fins 814 together define a diameter D6 (shown in Fig. 8) such that the diameter D6 is lesser than the diameter D2 (see Fig. 2) defined by the pair of axial stops 158 (see Fig. 2). Thus, the axial stops 158 may act as limiting stops to restrict any further movement of the helicoidal fins 814 of the second fluid connector 800 within the second connecting section 136 (see Figs. 1 and 2) along the longitudinal axis Y-Yl during a coupling of the second fluid connector 800 with the housing 102. Further, in some examples, the length L2 (see Fig. 2) defined by each angular cutout 162 (see Fig. 2) is substantially equal to a length L4 of each helicoidal fin 814 so that the angular cutout 162 may allow receipt of a corresponding helicoidal fin 814 therein.

The helicoidal fins 814 are disposed diametrically opposite to each other. Each of the two helicoidal fins 814 includes an angular extent A3 (shown in Fig. 7) of 90 degrees about the longitudinal axis Y-Yl. Each helicoidal fin 814 has a first portion 818 (shown in Fig. 7) and a second portion 820 (shown in Fig. 7) angularly extending from the first portion 818. Further, the second fluid connector 800 includes a plurality of extensions 822 (one of which is shown in Fig. 7) corresponding to the plurality of helicoidal fins 814 and disposed on the tubular body 802. Each extension 822 extends axially from a corresponding helicoidal fin 814 along the longitudinal axis Y-Yl towards the radial sealing region 810. Specifically, the second fluid connector 800 includes two extensions 822. Each extension 822 extends from the first portion 818 of the corresponding helicoidal fin 814. Further, each helicoidal fin 814 defines an outer axial surface 824 (shown in Fig. 7) and an inner axial surface 826, such that the extension 822 extends from the inner axial surface 826 of the helicoidal fin 814. The inner axial surface 826 faces the radial sealing region 810.

The second fluid connector 800 further includes the annular flange 828 extending from the second end 806 of the tubular body 802. The annular flange 828 defines a diameter D7. The annular flange 828 includes a first axial surface 830 facing the tubular body 802 and the second axial surface 832 opposite to the first axial surface 830. The first axial surface 830 includes the axial sealing region 834 configured to axially engage with the housing 102 along the longitudinal axis Y-Yl. The annular flange 828 further includes an annular flange groove 836 surrounding the axial sealing region 834. The annular flange groove 836 is configured to receive a second sealing member 837 (shown in an exploded form in Fig. 7) therein. The second sealing member 837 may include an O-ring, without any limitations. The outer axial surface 824 of each helicoidal fin 814 faces the axial sealing region 834.

Further, the second fluid connector 800 includes the plurality of locking elements 838 disposed adjacent to the annular flange 828 opposite to the tubular body 802 and angularly spaced apart from each other relative to the longitudinal axis Y-Yl. In some examples, the locking elements 838 may contact the second axial surface 832 of the annular flange 828. In the illustrated embodiment of Figs. 7 and 8, the plurality of locking elements 838 includes two locking elements 838 angularly separated from each other by 180 degrees. It may be contemplated that the second fluid connector 800 may include more than two locking elements or a single locking element, without any limitations. The pair of locking elements 838 together define a diameter D8 that is greater than the diameter D7 defined by the annular flange 828. Moreover, the diameter D7 and D8 are greater than the diameter DI defined by the cam projections 150 (see Fig. 2). Each locking element 838 is configured to be at least partially received in a corresponding opening 156 (see Fig. 2) of the housing 102 to rotationally lock the second fluid connector 800 relative to the housing 102. Further, each locking element 838 includes a tapered end portion 840 configured to be at least partially received in the corresponding opening 156. The tapered end portion 840 is wedge shaped and is defined by a chamfer 842 (shown in Fig. 7) provided on a corresponding locking element 838.

The second fluid connector 800 further includes a tubular coupler 844 disposed in fluid communication with the tubular body 802. In some examples, a length of the tubular coupler 844 may be greater than a length of the tubular coupler 444 shown in Figs. 3 and 4. The tubular coupler 844 includes a circular cross-section. One end 846 of the tubular coupler 844 may be connected to the tubular body 802. Further, another end 848 (shown in Fig. 8) of the tubular coupler 844 may connect with the second fluid conduit 132 (see Fig. 1). The tubular coupler 844 may be elbow-shaped. The tubular coupler 844 and the tubular body 802 may together define a hollow passage 850 (shown in Fig. 7) for the fluid to flow therethrough. The tubular coupler 844 may be integral with or joined to the tubular body 802 at the second end 806 of the tubular body 802. In the illustrated embodiment of Figs. 7 and 8, the tubular coupler 844 is integral with the tubular body 802. More particularly, the end 846 of the tubular coupler 844 is integral with the second end 806 of the tubular body 802. The tubular coupler 844 extends from the annular flange 828 and is configured to be coupled to the second fluid conduit 132 (shown in Fig. 1). The second fluid connector 800 further includes an annular projection 852 (shown in Fig. 7) extending radially from the tubular coupler 844 adjacent to the annular flange 828. Each locking element 838 extends radially from the annular projection 852.

Further, the second fluid connector 800 is rotatable between the first angular orientation (as illustrated in Fig. 9) and the second angular orientation (as illustrated in Fig. 10). In the first and second angular orientations of the second fluid connector 800, the second axial surface 832 of the annular flange 828 and the plurality of locking elements 838 of the second fluid connector 800 are disposed externally relative to the housing 102. Specifically, as the diameters D7 and D8 are greater than the diameter DI defined by the cam projections 150 (see Fig. 2), the cam projections 150 may not allow insertion of the annular flange 828 or the locking elements 838 within the passage 140 (see Fig. 2).

Referring to Fig. 9, in the first angular orientation of the second fluid connector 800 relative to the housing 102, the tubular body 802 is configured to be inserted at least partially within the housing 102 and the second fluid connector 800 is rotatable relative to the housing 102. In the first angular orientation of the second fluid connector 800, each angular cutout 162 receives a corresponding helicoidal fin 814. Further, the helicoidal fins 814 are misaligned with each cam projection 150 (see Fig. 2) in the first singular orientation of the second fluid connector 800 so that the second fluid connector 800 may be inserted within the annular end member 146 and the annular surface 138. Moreover, in the first angular orientation, the inner axial surface 826 of each helicoidal fin 814 may be disposed proximal to a corresponding axial stop 158 from the pair of axial stops 158. It should be noted that the second fluid connector 800 can be inserted within the housing 102 until the second fluid connector 800 engages with the axial stops 158. More particularly, as the diameter D6 defined by the helicoidal fins 814 is lesser than the diameter D2 defined by the pair of axial stops 158, the axial stops 158 may act as axial limit stops to restrict further insertion of the second fluid connector 800 within the second connecting section 136.

For coupling the second fluid connector 800 with the housing 102, the second fluid connector 800 may be rotated in an anti-clockwise direction C 1 to move the second fluid connector 800 from the first angular orientation to the second angular orientation. The second fluid connector 800 may be rotated based on gripping of the tubular coupler 844 by a personnel or an automated machine. In an example, the second fluid connector 800 may be rotatable by a predetermined angle A4 (shown in Fig. 2) from the first angular orientation to the second angular orientation. In some embodiments, the predetermined angle A4 may be 90 degrees. It should be noted that, during the rotation of the second fluid connector 800 from the first angular orientation to the second angular orientation, the cam projections 150 may provide a guiding feature to enable correct assembly of the second fluid connector 800.

Moreover, the second fluid connector 800 may be rotated within the housing 102 in the anti-clockwise direction Cl until each helicoidal fin 814 engages with a corresponding axial rib 160 (see Fig. 2). The axial ribs 160 may restrict any further rotational movement of the second fluid connector 800 thereby indicating that the second fluid connector 800 is in the second angular orientation. A design of the second fluid connector 800 and the housing 102 may eliminate incorrect assembly or rotation of the second fluid connector 800. Specifically, the axial ribs 160 may act as rotational limit stops that prevent incorrect rotation and/or assembly of the second fluid connector 800. For example, the axial ribs 160 may prevent the rotation of the second fluid connector 800 in a clockwise direction C2.

Referring to Fig. 10, upon the rotation of the second fluid connector 800 by the predetermined angle A4 (see Fig. 2) from the first angular orientation to the second angular orientation relative to the housing 102, the helicoidal fins 814 engage corresponding cam projections 150 of the housing 102 to axially secure the second fluid connector 800 to the housing 102 relative to the longitudinal axis Y-Yl. In particular, the outer axial surface 824 (see Fig. 7) of each helicoidal fin 814 may engage with a corresponding cam surface 152 from the pair of cam surfaces 152. Further, in the second angular orientation of the second fluid connector 800, each helicoidal fin 814 is received within a corresponding slot 164 from the pair of the slots 164. Furthermore, during the rotation of the second fluid connector 800 from the first angular orientation to the second angular orientation, the cam surface 152 of each cam projection 150 is configured to movably engage with the corresponding helicoidal fin 814 of the second fluid connector 800 to translate the second fluid connector 800 towards the annular surface 138. Moreover, in the second angular orientation of the second fluid connector 800, the plurality of helicoidal fins 814 are angularly misaligned with each angular cutout 162 (see Fig. 2). Such a feature may eliminate unintentional removal of the second fluid connector 800.

Further, in the second angular orientation, the radial sealing region 810 radially engages the housing 102. Specifically, the radial sealing region 810 may engage with the annular sealing region 142 of the housing 102. Furthermore, in the second angular orientation, the axial sealing region 834 axially engages the housing 102. Specifically, the axial sealing region 834 may engage with the axial seahng surface 148 of the housing 102. Additionally, in the second angular orientation, each locking element 838 is at least partially received in a corresponding opening 156 to rotationally lock the second fluid connector 800 relative to the housing 102. Specifically, the locking elements 838 may move radially outwards as the second fluid connector 800 moves from the first angular orientation to the second angular orientation for receipt of the tapered end portion 840 of the locking element 838 in the corresponding opening 156 of the locking tab 154. Once the tapered end portion 840 is received within the corresponding opening 156, the locking elements 838 may move radially inwards to return to their original position.

Thus, the present disclosure provides a dual locking system for the second fluid connector 800. Specifically, the helicoidal fins 814 that engage with the cam projections 150 provide a first locking feature, whereas the locking elements 838 locking with the locking tabs 154 provide a second locking feature. Such a dual locking system may eliminate unintentional removal of the second fluid connector 800 while the inverter assembly 100 is in use. Further, the dual locking system may both axially and rotationally lock the second fluid connector 800 within the housing 102 and prevent any undesired movement of the second fluid connector 800 relative to the housing 102 during use.

Moreover, when the second fluid connector 800 is to be disassembled from the housing 102, the locking elements 838 may be first disengaged from the corresponding locking tabs 154 by moving the locking tabs 154 radially outwards. Then, the second fluid connector 800 may be gripped and turned in the clockwise direction C2 to move the second fluid connector 800 from the second angular orientation to the first angular orientation. Once the second fluid connector 800 is in the first angular orientation and the helicoidal fins 814 align with the corresponding angular cutouts 162, the second fluid connector 800 may be removed from the housing 102.

Hence, the present disclosure describes an improved design for the inverter assembly 100 that may be simple in construction and may be compact. Further, the inverter assembly 100 described herein may be cost- effective and lightweight. The teachings of the present disclosure may improve an efficiency of manufacturing the inverter assembly 100 and may also improve a manufacturability of the inverter assembly 100. Further, the first and second fluid connectors 400, 800 may reduce or eliminate a number of additional parts, such as, mechanical fasteners, required for conventional connecting techniques, thereby reducing a time required in assembly and disassembly of the inverter assembly 100. Additionally, the first and second fluid connectors 400, 800 may be assembled or disassembled without requirement of additional tooling.

The first and second fluid connectors 400, 800 described herein provide axial as well as radial sealing thereby providing a leak proof connection between the housing 102 and the respective first and second fluid connectors 400, 800. Moreover, standard O-rings may be used for sealing the respective first and second fluid connectors 400, 800 to the housing 102. Further, the first and second fluid connectors 400, 800 are embodied as cost-effective injection molded parts, thereby reducing a manufacturing cost associated with the inverter assembly 100.

Therefore, the present invention provides the inverter assembly 100 that may reduce or eliminate the number of separate parts, may reduce the assembly time and the disassembly time, may be cost-effective, and may improve the efficiency of manufacturing the inverter assembly 100.

An aspect of the present disclosure provides a fluid connector for a housing including a tubular body, a plurality of helicoidal fins, and an annular flange. The fluid connector includes a plurality of locking elements at least partially received in a corresponding opening of the housing. Further, in a first angular orientation of the fluid connector relative to the housing, the tubular body is configured to be inserted at least partially within the housing and the fluid connector is rotatable relative to the housing. Moreover, during a rotation of the fluid connector from the first angular orientation to a second angular orientation, the helicoidal fins movably engage the housing, such that the rotation of the fluid connector results in a corresponding translation of the fluid connector into the housing.

The various embodiments which are described above may be used implemented independently from one another and may be combined with one another in various ways. The reference numbers used in the detailed description and the claims do not limit the description of the embodiments nor do they limit the claims. The reference numbers are solely used to clarify.

In the claims, the word “comprising” does not exclude other elements or steps, and the indefinite article “a” or “an” does not exclude a plurality. A single processor, element or other unit may fulfill the functions of several items recited in the claims. The mere fact that certain measures are recited in mutually different dependent claims does not indicate that a combination of these measures cannot be used to advantage. In the present disclosure, the expression “at least one of A, B and C” means “A, B, and/or C”, and that it suffices if, for example, only B is present. A single element or other unit may fulfill the functions of several items recited in the claims. The mere fact that certain measures are recited in mutually different dependent claims does not indicate that a combination of these measures cannot be used to advantage.

Any reference signs in the claims should not be construed as limiting the scope.

Although the invention has been elucidated herein with reference to figures and embodiments, these do not limit the scope of the invention as defined by the claims. The skilled person having the benefit of the present disclosure shall appreciate that many variations, combinations and extensions are possible within said scope.

LEGEND

100 Inverter Assembly

102 Housing

104 Cooling Channel

106 First Side

108 Second Side

110 Major Surface

112 First Side Surface

114 Second Side Surface

116 Bottom Surface

118 First Projections

120 Second Projections

122 Fins

124 Mounting Bracket

126 Fluid Inlet

128 First Fluid Conduit 130 Fluid Outlet

132 Second Fluid Conduit

134 First Connecting Section

136 Second Connecting Section

138 Annular Surface

140 Passage

142 Annular Sealing Region

144 Steps

146 Annular End Member

148 Axial Sealing Surface

150 Cam Projections

152 Cam Surface

154 Locking Tabs

156 Opening

158 Axial Stops

160 Axial Ribs

162 Angular Cutout

164 Slot

400 First Fluid Connector

402 Tubular Body

404 First End

406 Second End

408 Outer Surface

410 Radial Sealing Region

412 Annular Step

414 Helicoidal Fins

416 Annular Body Groove

417 First Sealing Member

418 First Portion

420 Second Portion 422 Extensions

424 Outer Axial Surface

426 Inner Axial Surface

428 Annular Flange

430 First Axial Surface

432 Second Axial Surface

434 Axial Sealing Region

436 Annular Flange Groove

437 Second Sealing Member

438 Locking Elements

440 Tapered End Portion

442 Chamfer

444 Tubular Coupler

446 End

448 End

450 Hollow Passage

452 Annular Projection

800 First Fluid Connector

802 Tubular Body

804 First End

806 Second End

808 Outer Surface

810 Radial Sealing Region

812 Annular Step

814 Helicoidal Fins

816 Annular Body Groove

817 First Sealing Member

818 First Portion

820 Second Portion

822 Extensions 824 Outer Axial Surface

826 Inner Axial Surface

828 Annular Flange

830 First Axial Surface

832 Second Axial Surface

834 Axial Sealing Region

836 Annular Flange Groove

837 Second Sealing Member

838 Locking Elements

840 Tapered End Portion

842 Chamfer

844 Tubular Coupler

846 End

848 End

850 Hollow Passage

852 Annular Projection

LI Length of Housing

W 1 Width of Housing

Al Angular Extent

A2 Predetermined Angle

A3 Angular Extent

A4 Predetermined Angle

X-Xl Longitudinal Axis

Y- Y 1 Lon gitu din al Axis

L2 Length Defined by Angular Cutout

L3 Length Defined by Helicoidal Fin L4 Length Defined by Helicoidal Fin

DI Diameter of Cam Projections

D2 Diameter of Axial Stops

D3 Diameter Defined by Helicoidal Fins D4 Diameter of Annular Flange

D5 Diameter of Locking Elements

D6 Diameter Defined by Helicoidal Fins

D7 Diameter of Annular Flange D8 Diameter of Locking Elements

C 1 Anti-clockwise Direction

C2 Clockwise Direction