[0001 ] This application claims the benefit of priority of Australian Provisional Patent Application No. 2019901762 that was filed on 23 May 2019, the entire disclosure of which is incorporated by reference herein.

FIELD OF THE INVENTION

[0002] The present invention relates to a mechanical fastener for fastening a canopy cover to a ceiling fan or light fixture affixed to a ceiling.

BACKGROUND TO THE INVENTION

[0003] A ceiling fan is generally suspended from a mounting bracket by a down rod. The mounting bracket affixes the ceiling fan to the ceiling.

[0004] A canopy cover is a decorative cover that is typically shaped like a bowl or dome and is used to cover the wiring between the ceiling and a ceiling fan and conceal the mounting bracket. It may also be referred to as a canopy assembly, ceiling canopy or simply a canopy.

[0005] The canopy cover is secured to the ceiling fan as a final step.

Traditionally, the primary way of securing the canopy cover to the ceiling fan is to use screws. Screws may be visible or concealed. If concealed, the screws may be screwed in by a screwdriver until it is below the exterior surface of the canopy so that it is less noticeable from a distance. For example, US patent 8,033,787 depicts in Fig. 1 that two mounting screws 84 are used to secure the canopy 42 to the mounting bracket 40 via mounting holes 48 in the canopy 42 to engage with threaded mounting holes 82 in the mounting bracket 40.

[0006] It has been observed that damage can occur during installation when using a screw to secure the canopy cover to the ceiling fan. At an elevated height and an awkward position, an installer may find it difficult to align the screw to a hole in the canopy cover and maintain that screw in the hole with one hand while reaching for a screwdriver in the other. Also, the installer may accidentally lose engagement of the screw on the screwdriver and the screwdriver may accidentally scratch the canopy cover or make a dent in the ceiling surface.

SUMMARY OF THE INVENTION

[0007] An embodiment of the present invention seeks to provide a simple, convenient, tool-less way of releasably securing a canopy cover to a ceiling fan or light fixture which advantageously complies with safety regulations and avoids accidental damage to the ceiling or ceiling fan.

[0008] Alternatively or additionally, an embodiment of the present invention seeks to at least provide the public with a useful choice.

[0009] A first aspect of the present invention provides a mechanical fastener for fastening a canopy cover to a ceiling fan or light fixture affixed to a ceiling, the fastener comprising: an elongate body member having at least one engaging portion configured to releasably engage with at least one corresponding engaging portion located within the canopy cover; wherein the body member is shaped to enable progressive insertion of the fastener through an opening of the canopy cover, in an insertion direction, so that the engaging portion releasably engages with the corresponding engaging portion to prevent, or at least inhibit, movement of the fastener through the opening in at least a direction opposite to the insertion direction, and wherein continued insertion of the fastener in the insertion direction causes the engaging portion and the corresponding engaging portion to fully disengage.

[0010] The engaging portion may comprise or be a first receptacle defined in the elongate body member, and the corresponding engaging portion may comprises or be a moveable and/or deformable protrusion located within the canopy cover. [0011 ] The fastener may further comprise a mechanical keying feature configured to physically prevent, or at least inhibit, insertion of the fastener through the opening unless the fastener is in a predetermined rotational orientation.

[0012] The mechanical keying feature may extend along the length of an outer surface of the fastener such that a cross section of the fastener is an irregular shape.

[0013] The mechanical keying feature may be a longitudinally extending rib projecting beyond a nominal circumference of the fastener and the rib may be sized and shaped to provide additional mechanical strength to the fastener.

[0014] The fastener may comprise a second receptacle for receiving at least part of the protrusion when the fastener is partially inserted into the opening of the canopy cover, wherein the second receptacle is longitudinally spaced apart from the first receptacle, and the second receptacle is located closer, in a longitudinal direction of the fastener, from a first end of the body member that is inserted into the opening than the first receptacle.

[0015] The fastener may be shaped and sized to provide an audible confirmation in response to the second receptacle releasably engaging with the protrusion.

[0016] A depth of the second receptacle may be greater than a depth of the first receptacle.

[0017] The external surface of the second receptacle may comprises at least a first portion and a second portion, wherein the first portion is shaped to abut against the protrusion to prevent, or at least inhibit, movement of the fastener through the opening in the direction opposite to the insertion direction, and the second portion is shaped to enable the protrusion to move relatively away from the first wall portion when the fastener is inserted in the insertion direction. [0018] The fastener may comprise a third receptacle for receiving at least part of the protrusion, wherein the third receptacle is longitudinally spaced apart from the first receptacle, and the third receptacle is located further away, in a longitudinal direction of the fastener, from the first end of the body member than the first receptacle.

[0019] The fastener may be made from a solid plastics material.

[0020] The fastener may further comprise a bottom surface having a curvature to match an external curved surface of the canopy cover.

[0021 ] A second aspect of the present invention provides a canopy cover for a ceiling fan or light fixture, comprising: an opening sized to receive a mechanical fastener; and a mechanical clip comprising at least one engaging portion; wherein the engaging portion is configured to releasably engage with a corresponding engaging portion of a mechanical fastener inserted through the opening.

[0022] The engaging portion may comprise or be a moveable and/or deformable protrusion located within the canopy cover, and the corresponding engaging portion may comprise or be a receptacle of a mechanical fastener inserted through the opening.

[0023] The mechanical clip may extend around the opening.

[0024] The opening may have an irregular shape configured to physically prevent, or at least inhibit, insertion of the fastener through the opening unless the fastener is in a predetermined rotational orientation.

[0025] The mechanical clip may comprise a plurality of spaced apart moveable and/or deformable protrusions located within the canopy cover. [0026] The mechanical clip may comprise one or more prongs, the or each prong comprising a respective one of the protrusion(s).

[0027] The mechanical clip may comprise a plurality of spaced apart prongs.

[0028] The prongs may be radially spaced apart from each other at

substantially equal angular distances around the opening.

[0029] The or each prong may be a resiliently moveable and/or deformable prong.

[0030] The or each protrusion may be arranged at or near a head portion of the respective prong.

[0031 ] The or each protrusion may comprise or be a locking tip.

[0032] A third aspect of the present invention provides a ceiling fan or light fixture, comprising a canopy cover according the second aspect of the present invention.

[0033] A fourth aspect of the present invention provides a mechanical fastener for fastening a canopy cover to a ceiling fan or light fixture affixed to a ceiling, the fastener comprising: an elongate body member; a receptacle defined in the elongate body member, configured to releasably engage with a mechanical clip located within the canopy cover; and a mechanical keying feature configured to physically prevent, or at least inhibit, insertion of the fastener through an opening of the canopy cover unless the fastener is in a predetermined rotational orientation; wherein the body member is shaped to enable progressive insertion of the fastener through an opening of the canopy cover, in an insertion direction, so that the receptacle releasably engages with the mechanical clip to prevent, or at least inhibit, movement of the fastener through the opening in a direction opposite to the insertion direction, and wherein continued insertion of the fastener in the insertion direction causes the fastener to fully disengage from the mechanical clip.

[0034] The receptacle may be circumferentially defined in the elongate body member.

[0035] A further aspect of the present invention provides a canopy system for a ceiling fan or light fixture, comprising: a fastener according the first aspect of the present invention, and a canopy cover according to the second aspect of the present invention.

[0036] The fastener may be partially inserted through the opening of the canopy to a predetermined insertion position, the fastener being prevented, or at least inhibited, from moving through the opening in at least the direction opposite to the insertion direction when the fastener is in the predetermined insertion position.

[0037] The second receptacle may at least partly receive the or each protrusion when the fastener is in the predetermined insertion position.

[0038] The or each protrusion may be in a substantially pre-insertion state when the fastener is in the first insertion position.

[0039] A further aspect of the present invention provides a method for fastening a canopy cover to a ceiling fan or light fixture, the method comprising: applying finger pressure to progressively move a mechanical fastener in an insertion direction through an opening of the canopy cover for releasable engagement with a mechanical clip located within the canopy cover; wherein the fastener progressively moves from a first insertion position, in which the mechanical clip prevents, or at least inhibits, movement of the fastener through the opening in at least a direction opposite to the insertion direction, to a second insertion position, in which releasable engagement with the mechanical clip causes the canopy cover to be fastened to the ceiling fan or light fixture. [0040] The method may further comprise progressively moving the mechanical fastener in the insertion direction from the second insertion position until the fastener is completely disengaged from the mechanical clip.

[0041 ] Progressively moving the mechanical fastener in the insertion direction from the second insertion position until the fastener is completely disengaged from the mechanical clip may comprise using a tool having a width less than or equal to a width of the opening to push the fastener in the insertion direction.

[0042] A further aspect of the present invention provides a mechanical fastener for fastening a canopy cover to a ceiling fan or light fixture affixed to a ceiling, the fastener comprising: an elongate body member; at least one

circumferential receptacle defined in the elongate body member, configured to releasably engage with locking tips of a plurality of deformable prongs located within the canopy cover; wherein the at least one circumferential receptacle is shaped to enable progressive insertion of the fastener through an opening of the canopy cover in an insertion direction to at least one discrete insertion position and to prevent movement of the fastener through the opening in a direction opposite to the insertion direction, and wherein continued insertion of the fastener in the insertion direction causes the fastener to fully disengage from the

deformable prongs.

[0043] A still further aspect of the present invention provides a method for fastening a canopy cover to a ceiling fan or light fixture, the method comprising: applying finger pressure to progressively move a mechanical fastener, in an insertion direction through an opening of the canopy cover, to at least one insertion position for releasable engagement with a mechanical clip located within the canopy cover; wherein, when the fastener is in the at least one insertion position, releasable engagement of the fastener with the mechanical clip prevents, or at least inhibits, movement of the fastener through the opening in at least a direction opposite to the insertion direction; and the fastener is progressively moveable in the insertion direction from the insertion position until the fastener is completely disengaged from the mechanical clip. [0044] Other advantages and features according to the invention will be apparent to those of ordinary skill upon reading this application.

[0045] In the description in this specification reference may be made to subject matter which is not within the scope of the appended claims. That subject matter should be readily identifiable by a person skilled in the art and may assist in putting into practice the invention as defined in the presently appended claims.

BRIEF DESCRIPTION OF THE DRAWINGS

[0046] The present invention will now be described, by way of non-limiting example only, with reference to the accompanying drawings, in which like reference numbers denote like elements and in which:

[0047] Fig. 1 is a side view of a ceiling fan comprising a canopy cover in accordance with an embodiment of the present invention;

[0048] Fig. 2 is a magnified view of the canopy cover showing a fastener partially inserted into an opening of the canopy cover;

[0049] Fig. 3 is a perspective magnified view of the canopy cover;

[0050] Fig. 4 is a side view of the canopy cover in a raised position;

[0051 ] Fig. 5 is a perspective view from below of the canopy cover showing the mechanical fastener partially inserted into a first insertion position;

[0052] Fig. 6 is a perspective view from below of the canopy cover with the mechanical fastener inserted into a second insertion position;

[0053] Fig. 7 is a perspective view from below of the canopy cover lowered from the ceiling to expose the mounting bracket; [0054] Fig. 8 is a cross-sectional view of the canopy cover showing the mechanical fastener partially inserted at the first insertion position;

[0055] Fig. 9 is a cross-sectional view of the canopy cover showing the mechanical fastener partially inserted at the first insertion position from a different viewing angle;

[0056] Fig. 10 is a cross-sectional view of the canopy cover showing the mechanical fastener partially inserted at the first insertion position from another different viewing angle;

[0057] Fig. 11 is a cross-sectional view of the canopy cover showing the mechanical fastener partially inserted at the first insertion position from another different viewing angle;

[0058] Fig. 12 is a cross-sectional view of the canopy cover showing the mechanical fastener partially inserted at the first insertion position from another different viewing angle;

[0059] Fig. 13 is a cross-sectional view of the canopy cover showing the mechanical fastener partially inserted at the first insertion position from another different viewing angle;

[0060] Fig. 14 is a cross-sectional view of the canopy cover showing the mechanical fastener inserted at the second insertion position causing the prong to deflect and form an interference fit against an upper surface of a canopy mount ring connected to the mounting bracket;

[0061 ] Fig. 15 is a cross-sectional view of the canopy cover showing the mechanical fastener inserted at the second insertion position from a different viewing angle; [0062] Fig. 16 is a cross-sectional view of the canopy cover showing the mechanical fastener inserted at the second insertion position from another different viewing angle;

[0063] Fig. 17 is a cross-sectional view of the canopy cover showing the mechanical fastener inserted at a third insertion position;

[0064] Fig. 18 is a cross-sectional view of the canopy cover showing the mechanical fastener inserted at the third insertion position from a different viewing angle;

[0065] Fig. 19 is a cross-sectional view of the canopy cover showing the mechanical fastener inserted at the third insertion position from another different viewing angle;

[0066] Fig. 20 is a cross-sectional view of the canopy cover showing the mechanical fastener inserted at the third insertion position from another different viewing angle;

[0067] Fig. 21 is a cross-sectional view of the canopy cover showing the mechanical fastener inserted at the third insertion position from another different viewing angle;

[0068] Fig. 22 is a perspective side view of the mechanical fastener;

[0069] Fig. 23 is a perspective view from below of the mechanical fastener;

[0070] Fig. 24 is a cross-sectional side view of the mechanical fastener;

[0071 ] Fig. 25 is a bottom view of the mechanical fastener;

[0072] Fig. 26 is another perspective side view of the mechanical fastener; [0073] Fig. 27 is another different perspective side view of the mechanical fastener; and

[0074] Fig. 28 is another different perspective side view of the mechanical fastener.

DETAILED DESCRIPTION OF THE INVENTION

[0075] A mechanical fastener for fastening a canopy cover to a ceiling fan or light fixture affixed to a ceiling according to the present invention is illustrated in Figs. 22 to 28 and shown generally at reference numeral 40.

[0076] Referring to Fig. 1 , a ceiling fan 10 has a motor housing and fan blades 1 1. A canopy cover 30 extends around the mounting bracket 20 to conceal the mounting bracket 20 from view. The canopy cover 30 preferably has a tapered hollow body formed to have a rim portion and an opening formed into an exterior tapered sidewall of the canopy cover 30. However, a person skilled in the art will understand the canopy cover 30 may have other shapes. A down rod opening extends through a lower end of the canopy cover 30 for receiving the down rod 13.

[0077] The canopy cover 30 is rigidly secured to a canopy assembly affixed to the ceiling by the mounting or ceiling bracket 20 when a mechanical fastener 40 passing through a lower opening 31 of the canopy cover 30 is releasably engaged with one or more moveable and/or deformable prongs, or parts or member, 32 of a mechanical clip 70 located within the canopy cover 30. The clip 70 may be arranged adjacent to the opening, and surround or at least partly extend around the opening 31 . The canopy cover 30 preferably has a plurality of prongs 32 spaced around the lower opening 31 . The prongs 32 are resiliently flexible and deflect depending on the insertion depth of the fastener 40 within the canopy cover 30. While releasably engaged with the prongs 32 and progressed to a predetermined insertion position, the fastener 40 causes outward deflection of the prongs 32 against a canopy mount, part or bracket, in the form of a canopy mount ring 50, of the canopy assembly (see Fig. 16 for the prongs 32 in a deflected state) that may be affixed or secured relative to a ceiling.

[0078] Each prong 32 may be a moveable and/deformable prong, such as a resiliently moveable and/deformable prong. The example prongs 32 each comprise a resiliently flexible or deformable stem, or leg or body, portion 34 that (in a non-inserted or non-deformed state of the prong 32 as shown in Figs. 8-13 and 17-21 ) generally extends in an insertion direction 62. The prongs 32 each further comprise a protrusion in the form of a locking tip 33 that is arranged at or near a head portion of the prong 32. The resiliently flexible stems 34 allow the protrusions/locking tips to move relative to the opening 31 as the fastener 40 is inserted through the passageway. In the example canopy cover 30, the head portions of the prongs 32 are located at or near the ends of the prong 32 distal to the opening 31 . Alternatively, the protrusions (locking tips 33) could each be located along and protrude from the stem portion 34 intermediate a base portion (proximal the opening 31 ) and the head portion of the respective prong 32.

Referring to Fig. 10, each locking tip 33 (in the non-deformed state) extends and protrudes laterally, radially inwardly relative to the opening 31 , from the respective stem portion 34 to engage a fastener 40 being inserted through the opening 31 .

In one example, each tip 33 extends obliquely inwardly from the stem portion 34 relative to the insertion direction. Each prong 32 may be formed as unitary part. Alternatively the locking tips 33 and stem portions 34 may be formed separately, and the tips 33 affixed to the stem portions 34.

[0079] Although the example canopy cover 30 comprises a plurality of movable and/or deformable protrusions in the form of locking tips 33 of resiliently flexible prongs that resiliently deflect or bend as the fastener 40 is inserted into the canopy opening 31 , it will be understood by a person skilled in the art that other arrangements (not shown) are possible. For example, alternatively the clip 70 may comprise one or more substantially rigid prongs 32 that are movably mounted to a body of the mechanical clip adjacent the passageway 71 . A base portion of each prong 32 may be resiliently pivotally mounted to the body of the clip 70 adjacent the opening 31 , such that the protrusions are resiliently biased towards the fastener 40, and able to resiliently deflect/pivot outwardly and move away from the fastener 40 in a direction transverse to the insertion direction, as the fastener 40 is inserted through the opening 31/passageway 71. Alternatively, the canopy cover 30 may comprise one or more resiliently compressible protrusions that are each part of or secured to a body or prong of the mechanical clip 70. The compressible protrusion(s) may again be similarly arranged to releasably engage with the fastener 40, and to resiliently compress and expand (deform) as the fastener 40 is inserted through the opening 31/passageway 71. In one example, each protrusion may comprise or be formed from a compressible material.

Alternatively, the or each protrusion may be mounted to a body or part of the clip 70 via a spring, such as mechanical spring or a gas spring, whereby the protrusion is again resiliently biased towards the fastener 40 as the fastener 40 is inserted to releasably engage with the fastener 40, and able to deflect as the fastener 40 is inserted through the opening 31 /passageway 71.

[0080] Referring to Figs. 22 to 28, the fastener 40 comprises an elongate body member 51 . The fastener 40 comprises at least one receptacle or recess 45 is defined in the elongate body member 51 . The example fastener 40 has a plurality of receptacles 44, 45, 46. Preferably, the fastener 40 has at least two receptacles 45 , 44 ( or 46), more preferably three receptacles 45, 44, 46, defined in the elongate body member 51. The or each receptacle 44, 45, 46 may be a

circumferential receptacle. The example fastener 40 comprises three

longitudinally spaced apart circumferential receptacles 44, 45, 46, defined in the elongate body member 51. Each receptacle 44, 45, 46 of the example fastener 40 is configured to releasably engage with and/or at least partially receive a locking tip 33 of at least one deformable prong 32 located within the canopy cover 30. Each circumferential receptacle 44, 45, 46 is sized and shaped to enable progressive insertion of the fastener through the opening 31 of the canopy cover 30 in an insertion direction 62 (schematically indicated in Fig. 13) to at least one respective insertion or engagement position. Each circumferential receptacle 44, 45, 46 is sized and shaped to prevent, or at least inhibit, movement of the fastener in a direction opposite to the insertion direction. Continued insertion of the fastener 40 along the insertion direction so that the third or last (in the insertion direction) circumferential receptacle 46 (the most proximal receptacle from a second end or base 49 of the body member 51 ) moves relatively past the or each tip 33, causing the fastener 40 to fully disengage from the respective deformable prong 32.

[0081 ] Although the example fastener 40 comprises one or more receptacles 44, 45, 46 and the example canopy cover 30 comprises one or more protrusions (in the form of the locking tips 33) located in the canopy cover 30, it will be

understood by a person skilled in the art that the receptacles and the protrusions may be swapped around. That is, the canopy cover 30 may comprise one or more receptacles and the fastener 40 may comprise one or more protrusions that releasably engage with the receptacle(s) as the fastener 40 is inserted through the opening 31. For example, the mechanical clip 70 located in the canopy cover 30 may comprise the receptacles. In one example, the receptacles may be resiliently movably arranged or mounted in the canopy cover 30 so that the receptacles can move relative to the opening 31 of the canopy cover 30, and such that the receptacles are resiliently biased towards releasable engagement with the protrusions, as the fastener 40 is inserted through the opening 31 . In one example, the protrusions may be, for example, resiliently deformable protrusions formed on an external surface of the fastener 40 that are arranged to resiliently deform and be at least partly received within the receptacles as the fastener is inserted though the opening.

[0082] Further, it will be understood by a person skilled in the art that the receptacles 44, 45, 46 or the protrusions (such as the locking tips 33) could be more broadly termed engaging portions, and the other of the receptacles 44, 45,

46 and the protrusions 33 could be more broadly termed corresponding engaging portions.

[0083] The fastener 40 further comprises a mechanical keying feature 41 configured to physically prevent, or at least inhibit, insertion of the fastener 40 through the opening 31 unless the fastener 40 is in a predetermined rotational orientation. [0084] The mechanical keying feature 41 may also be considered an orientation feature 41 to ensure the fastener 40 can be inserted in only one way. This specific orientation may be required in circumstances where a bottom face 42 of the fastener 40 is curved to match the curvature of the external curved surface of the canopy cover 30 to provide a visually aesthetic appearance. Another benefit of the matching curved surface is that it forms a substantially flush surface to provide a visual confirmation of correct engagement when the fastener 40 has reached a final insertion position. The mechanical keying feature 41 can be provided by a longitudinally extending, vertical (as shown in Fig. 22) rib 41 that is higher (has a larger diameter) than other ribs 47.

[0085] The mechanical keying feature 41 extends length-wise along the length of an outer surface of the fastener 40 such that the transverse cross section of the fastener 40 is an irregular shape and prevents relative rotation of the fastener 40 within the opening 31 . In one form, the mechanical keying feature 41 is a longitudinally or vertically (as seen, for example, in Fig. 23) oriented rib projecting outwardly beyond a nominal circumference of the fastener 40 that corresponds to a nominal diameter of the base 49. The rib 41 is also sized and shaped to provide additional mechanical strength to the fastener 40 preventing the fastener 40 from easily bending relative to its longitudinal axis 60.

[0086] The example opening 31 of the canopy cover 30 has a complementary irregular shape, being complementary to the irregular shape of the transverse cross section of the fastener 40, configured to physically prevent, or at least inhibit, insertion of the fastener 40 through the opening 31 unless the fastener 40 is in a predetermined rotational orientation.

[0087] The fastener 40 also has a narrowing tip, or head or leading, portion 43 at or adjacent a first insertion or upper end 52 of the fastener body 51 , opposite the base 49, that tapers in the insertion direction, and which assists with convenient initial insertion via the opening 31.The fastener 40, more particularly the body member 51 , is shaped and sized to provide a reassuring audible confirmation, i.e., an audible click, in response to correct engagement at at least one predetermined and/or discrete insertion position.

[0088] The body member 51 may comprise one or more shoulder portions 56, 57, 58 located intermediate, and/or that longitudinally space apart, one or more of the tip portion 43 and the receptacles 44, 45, 46. The example fastener 40 comprises three shoulder portions 56, 57, 58. As the fastener 40 is inserted into opening 31 in the insertion direction, the tips 33 of the resiliently deformable prongs 32 slide and/or deflect relatively over the respective shoulder portions 56, 57, 58 before springing or snapping into the trailing adjacent receptacle 44, 45, 46. The 62 insertion direction may be substantially parallel to a longitudinal axis 60 of the fastener 40. The tips 33 advantageously resiliently spring or snap into the receptacle 44, 45, 46 to provide the audible click.

[0089] One or more of the receptacles 44, 46 may be sized to surround or at least partly receive each locking tip 33 when the respective prongs 32 are in a non- deformed or pre-insertion state (in other words, when the prongs 32 are in a state that is substantially the same as the state of the prongs 32 before the fastener 40 is inserted through the opening 31 and deflects the prongs 32).

[0090] Referring to Fig. 24, upper and lower (as shown in Fig 24) circumferential receptacles 44, 46 (the most distal and most proximal receptacles from the base 49) have a substantially sawtooth-shaped longitudinal cross section or profile. More particularly, an external surface of each of the upper and lower

circumferential receptacles 44, 46 comprises or is defined by laterally extending upper (or first) and lower (second) portions 53, 54. The upper (as shown in Fig 24) substantially right angled wall portion 53 extends to and/or is located forwardly, in the insertion direction, of the lower angled wall portion. The upper portion is configured to abut against the locking tip 33 to prevent movement of the fastener 40 in the direction opposite to the insertion direction. At least part of the upper portion 53 may extend, for example, in a plane that extends substantially perpendicularly to the longitudinal axis 60 of the body member 51. Alternatively the wall portion 53 may extend obliquely to the longitudinal axis 60 of the body member 51 . The upper and lower circumferential receptacles 44, 46 may each further comprise an intermediate (or third) portion 55 that extends between the upper and lower portions. The intermediate portion may have a substantially constant, or alternatively varying, depth (or diameter). The intermediate portion 55 may be part of the upper wall portion 53. The lower angled wall portion 54 is configured or shaped to define a ramp to facilitate insertion of the fastener 40 and facilitate the locking tip 33 to slide or move (deflect) laterally outwardly, causing deformation of the prongs 32, when the fastener 40 is inserted. In an example, the wall portion 54 extends obliquely relative to the longitudinal axis. The depth of the lower portion progressively increases (and the diameter of the lower portion correspondingly progressively decreases) in the insertion direction. It will be understood by a person skilled in the art that the wall portion 54 may define a substantially straight or arcuate-shaped ramp for the or each tip 33.

[0091 ] The example faster 40 comprises three longitudinally spaced apart circumferential receptacles 44, 45, 46 defined or formed in the body member 51 . Two of the receptacles 44, 46 may have substantially the same shape. The middle or intermediate positioned (along a longitudinal axis of the fastener 40) receptacle 45 may have a depth, in a transverse direction (relative to the longitudinal axis of the fastener) or radial direction, that is less than the other receptacles 44, 46 (where the receptacles 44 and/or 46 are present) causing the prongs 32 to be in a deformed state when releasably engaged with the middle positioned

circumferential receptacle 45. In the example fastener 40, the receptacle 44 is positioned or located longitudinally closer or more proximal to the insertion end 52, which is initially inserted into the opening 31 , than the receptacle 45 so that the receptacle 45 trails the receptacle 44 as the fastener 40 is initially inserted through the opening 31 . The receptacle 46 is positioned or located longitudinally further from the insertion end 52 than the second receptacle 45 so that the receptacle 46 trails the receptacle 45 as the fastener 40 is inserted through the opening 31. The receptacles 44, 45, 46 are formed or defined in an external surface of the body member 51 . [0092] The fastener 40 may be made from a solid plastics material. For example, a thermoplastics material may be used. As some ceiling fans may be located outdoors and exposed to moisture and a harsh environment, using a non- corrosive material provides increased durability. However, it will be understood by those skilled in the art that the fastener 40 may be made from one or more other, preferably non-corrosive, materials. The example fastener 40 is a unitary part.

[0093] The mechanical clip 70 may comprise a plurality of prongs 32. The example clip 70 comprises three deformable prongs 32, one of which is visible in Figs. 8 to 21 , and has an opening or passageway 71 that extends, in the insertion direction, between the prongs 32 through which the fastener 40 is inserted, when the fastener 40 is inserted into the canopy cover 30 via the canopy opening 31 . The prongs 32 may be radially spaced apart from each other, such as at substantially equal angular distances. In one example, the mechanical clip 70 may be secured to an external body of the canopy cover 30. The mechanical clip 70 may be formed as a unitary part. Alternatively, the mechanical clip 70 and the body of the canopy cover 30 may be formed as a unitary part.

[0094] The canopy cover 30 is fastened to the ceiling fan 10 by applying finger pressure to progressively move a fastener 40 in an insertion direction 62 through an opening 31 of the canopy cover 30 for releasable engagement with a mechanical clip 70 located within the canopy cover 30. In other words, the fastener 40 is pushed or inserted via the opening 31 . The insertion direction is substantially parallel to the longitudinal axis 60 of the body member 51. As the fastener is pushed through the opening 31 , the fastener 40 progressively moves from a first discrete insertion position shown in Figs. 8 to 13 to a second discrete insertion position shown in Figs 14 to 16, causing the canopy cover 30 to be fastened to the ceiling fan 10. The deformed prongs 32 when the fastener 40 is in the second discrete insertion position creates interference and a friction fit the canopy mount ring 50 that is rigidly connected to the mounting bracket 20. The interference and friction fit inhibits or resists the further movement of the fastener 40 in the insertion direction (and the direction opposite to the insertion direction) when the fastener 40 is in the second discrete insertion position. [0095] The method may further comprise progressively moving the fastener 40 in the insertion direction from the second discrete insertion position until the fastener 40 is completely disengaged from the mechanical 70 clip using a tool having a diameter less than or equal to a diameter of the opening 31. This causes the canopy cover 30 to be unfastened from the ceiling fan 10 and thus can be lowered.

[0096] At least one embodiment of the present invention provides an improved installation process for a ceiling fan 10 that enhances convenience and minimises potential damage by providing a mechanical fastener 40 in the form of a plastic molded pin . The shape and sizing of the pin 40 provides a useful functionality and avoids the need for a tool (screwdriver) during installation. Consequently this removes the possibility of damage to the ceiling during installation which is considered more difficult than the process of removing the canopy cover 30 from the canopy assembly during a maintenance operation. The molded pin 40 obviates the need for a threaded screw, Philips head screw or the opening 31 of the canopy cover 30 to be threaded. Having a non-threaded opening 31 may make the canopy cover 30 simpler to machine. Possible damage caused by an installer using a screwdriver or other rigid metallic tool to fasten a screw that was required with conventional ceiling fans is ameliorated.

[0097] The fan 10 may first fixed to the celling. The canopy cover 30 is lowered in order to access the ceiling bracket 20 to fix the fan 10 to the ceiling (see Fig. 1 ). The canopy cover 30 preferably has the plastic pin 40 pre- inserted/pre-assembled at an earlier stage (see Figs. 2 and 3). To achieve this earlier state, the pin 40 is pushed into the canopy cover 30 until it audibly clicks into place. This occurs, as the pin is inserted into the canopy cover 30, when the prongs 32 (part of canopy cover 30) spring or snap into the first section or receptacle 44 of the pin 40 that has a smaller nominal diameter than the nominal circumference of the fastener 40. In this state, the pin 40 is protruding from and retained in the canopy cover 30 (see Figs. 2 to 5). Alternatively, the canopy cover 30 may not initially come with or have the fastener/pin 40 pre-inserted/pre- assembled, and the pin 40 may be partially inserted into the canopy cover 30 via the opening 31 by a user, either before or after the fan 10 is affixed to the celling.

[0098] The pin 40 is pushed by a finger to secure the canopy to the ceiling bracket 20 and in contrast to the traditional method of requiring a screwdriver and another hand to hold a screw in position while it is being initially screwed in, the pin 40 preferably permits single finger movement. As described above, the pin 40 is initially held in the canopy cover 30 (first predetermined or discrete insertion position) and partially protrudes below from the opening 31 of the canopy cover 30. An installer places the canopy cover 30 in position and pushes the pin 40 with their finger into a second predetermined or discrete secured (or insertion or engagement) position (i.e. when the prongs 32 are engaged with the second receptacle 45 of the fastener 40).

[0099] The canopy cover 30 may now be considered to be installed in a semi permanent basis (that is, securely but releasably installed so that the canopy can later be removed). In one example, the bottom face 42 of the fastener 40 may be substantially flush with the external surface of the canopy cover 30. Preferably the canopy cover 30 cannot be readily removed from the ceiling fan 10 unless a tool is used. The size of the opening 31 may be less than the width of a typical finger and therefore prevent, or at least inhibit, the pin 40 being pushed by a finger, in the insertion direction, through the canopy cover 30. For example, the width or diameter of the opening 31 may be less than 16mm, less than 14 mm, less than 12 mm, less than 8mm, less than 6mm and/or less than 4mm. Preventing, or at least inhibiting, the pin 40 being moved by finger in the insertion direction when the canopy cover 30 is secured avoids accidental bumping or pushing of the pin 40 which can cause the canopy cover 30 to be disengaged from the canopy mount ring 50 connected to the mounting bracket 20. This interaction of an appropriately sized opening 31 and length of the fastener 40, such that the bottom face 42 is substantially flush with, or slightly inside, the external surface of the canopy cover 30 preferably also complies with any relevant safety regulations because it addresses the safety risk of the canopy cover 30 easily and/or inadvertently disengaging from the canopy mount 50 and falling on someone’s head accidentally, and/or prevents or inhibits live wiring associated with the ceiling light 10 (or light fixture) being inadvertently exposed.

[00100] To remove the canopy cover 30 to, for example, clean or service the ceiling fan 10 (or light fixture) and/or the canopy cover 30, a slender tool such as a screwdriver may be used to further push the pin 40 into the canopy cover 30. The pin 40 is further pushed past the discrete secured position (Figs. 14 to 16), such that tips 33 of the prongs snap into the last or third receptacle 46 (a third discrete insertion position shown in Figs. 17-21 ). The pin 40 is further pushed or inserted to the receptacle past the tips 33 and subsequently disengages the pin 40 from the prongs 32 of the mechanical clip 70 and in turn releases the canopy cover 30 from the ceiling bracket 20. The canopy cover 30 can then be removed and access to the wiring and ceiling bracket 20 is possible. After servicing, the pin 40 can be partially re-inserted into the canopy cover 30 via the opening 31 , ready for securing again, in its initial state as described above.

[00101 ] The shape and structure of the pin 40 creates three insertion or engagement positions along its length for the prongs 32 within the canopy cover 30 to rest within or releasably engage with: (position 1 shown in Figs.4, 5 and 8 to 13- prongs 32 are relatively relaxed; position 2 shown in Figs 6 and 14 to 16 - prongs 32 are splayed/deflected outwards creating a friction fit/interference with the canopy mount ring 50; and position 3 shown in Figs 17 to 21- prongs 32 are relatively relaxed.) The three discrete positions are created by varying the diameter of the pin 40 at various heights by having an absence of material of the elongate body member 51 corresponding to the receptacles 44, 45, 46.

[00102] In some circumstances, the varying diameter structure of the plastic pin 40 may degrade mechanical strength and integrity, and therefore one or more longitudinally extending, vertical (as shown in Fig. 22) ribs 41 , 47 are provided to improve mechanical strength of the fastener 40. The fastener 40 comprises three ribs 41 , 47. As discussed above, one of the ribs also functions as a mechanical keying feature 41 to limit rotational orientation of the fastener 40 and guide the fastener 40 through the respective shaped opening 31 of the canopy cover 30.

The ribs 41 , 47 may each extend through the receptacles 44, 45, 46.

[00103] In the position 1 , the prongs 32 in the canopy cover 30 are relaxed and sit within the smaller diameter section of the pin 40 (see Fig. 8). To semi permanently fix the canopy cover 30 to the canopy assembly, the canopy cover 30 is first lifted up to the ceiling (see Figs. 4 and 5). The pin 40 is still in position 1 during this step.

[00104] The canopy cover 30 may be raised until it temporarily clips into place by internal clips in the canopy cover 30 which clip onto the canopy mount ring 50. The internal clips are temporary clips because the canopy cover 30 can be pulled down in this state in order to release them. The plastic pin 40 advantageously provides a final fixation point which is tool-less (i.e. a finger will suffice) to install but cannot be disengaged without the use of a mechanical tool. During this step, the canopy cover 30 is aligned with the canopy mount ring 50, and at least part of the prongs 32 and pin 40 pass through a hole or recess 59 in, and/or are located adjacent a part or side of, the canopy mount ring 50 (see Figs. 8 to 13). The prongs 32 are still in a relaxed state (position 1 ) allowing them to at least partly pass through the hole or recess 59 in the canopy mount ring 50.

[00105] The final step of securing the canopy cover 30 involves pushing the pin 40 (using a finger) further into the canopy cover 30. During this step, at least part of each the prongs 32 of the mechanical clip 70 in the canopy housing will be forced and resiliently move outwards (due to the ramped up or increased diameter of body member 51 of the pin 40 at or around the receptacle 44 pushing against the tips 33 of the prongs 32). As a result, the outer diameter of a nominal circle formed by the tips 33 of the prongs 32 around the pin 40 will increase and the tips 33 will be wedged against the canopy mount ring 50, between the body member 51 and the canopy mount ring 50. In an example, the pin 40 will be inhibited from moving, in the direction opposite the insertion direction and optionally also in the insertion direction, relative to both the canopy mount ring 50 and the canopy cover 30 due to mechanical interference and the friction fit between the pin 40, the prongs 32 and canopy mount ring 50. This sprung state (position 2) is depicted in Figs. 6 and 14 to 16.

[00106] The canopy cover 30 preferably can only be removed with a

mechanical tool rather than a finger. This is ensured by providing a small diameter of the opening 31 in the canopy cover 30 where the pin 40 is to be located. A finger cannot push the pin 40 in further because it is larger than the diameter of the opening 31 . Using a tool such as a small pointed screwdriver, the pin 40 is pushed again further into the canopy housing. This moves the pin 40 from position 2 to position 3. In position 3, the prongs 32 spring back to their relaxed state (similar to the prong 32 condition to position 1 ) and so the outer diameter of the prongs 32 reduces. Position 3 is shown in Figs. 17 to 21.

[00107] After the prongs 32 are relaxed again (in position 3) and in a vertical orientation (as shown in Fig. 19, not sprung outwards), the disengaged prongs 32 and pin 40 can pass down through a hole or recess 59, for example, in the canopy mount ring 50 so that the canopy is released from the canopy mount ring 50. To do this, the canopy cover 30 is pulled in the downwards direction, which will also release the temporary clips that were also engaged as earlier described.

[00108] Referring to Figs. 6 and 7, the canopy cover 30 is pulled down to its starting position, allowing access to the wiring, components of the canopy assembly and the mounting bracket 20.

[00109] To reset the pin 40 within the canopy cover 30, the pin 40 can be pushed fully through the canopy cover 30 in the same direction as previous movements with an appropriate tool. This will disassemble or fully disengage the pin 40 from the canopy cover 30 completely and it will fall onto the inner surface of the canopy cover 30 due to gravity. The pin 40 can then be removed and re inserted through the hole 31 in the canopy cover 30 to achieve the preassembled initial state (see Fig 1 .) [00110] The receptacles 44, 45, 46 of the fastener 40 are circumferential receptacles for releasable engagement with the locking tip 33 of the prongs 32 of the mechanical clip. The receptacle 44, 45, 46 may be in the form of a notch or recess or rebate defining a void to receive and resiliently engage with the locking tip 33. Although a circumferential shaped receptacle is described, it is possible for a non-circumferential shaped receptacle to be used, for example, when the fastener 40 comprises a mechanical keying feature 41 and the mechanical clip has a single prong 32 oriented to releasably engage a respective receptacle.

[0011 1 ] In another example, a mechanical keying feature 41 is not required because the base of the fastener 40 may be flat if the lower surface of the canopy cover 30 is also flat. Rotational orientation is not a consideration because the three prongs 32 of the mechanical clip can engage with the circumferential receptacles 44, 45, 46 in any in substantially rotational orientation.

[00112] The locking tip 33 of each prong 32 is angled at its distal end relative to the remainder of the prong 32. This ensures a stable releasable engagement and also makes it easier for the sliding movement of the pin 40 relative to the mechanical clip.

[00113] The advantages of the fastener 40 for releasably securing the canopy cover 30 include a significant reduction of installation time and the obviation of damage to the ceiling during installation. The interrelationship between the canopy cover 30 and fastener 40 advantageously meets safety regulations (for example, in Australia and/or in other jurisdictions) because although no mechanical tool is required to secure the canopy cover 30, a mechanical tool is required to remove the canopy cover 30.

[00114] Although a canopy system 80 having a fastener 40 and a canopy cover 30 for a ceiling fan 10 has been described above, it is envisaged that an embodiment of the present invention is applicable to securing a canopy to a ceiling light fixture also, for example, an oyster light, pendant light or chandelier. This may enable new designs and structures for ceiling light fixtures because cabling may be exposed to the user when the canopy is removed rather than only lamp holders, because the present invention preferably complies with any relevant safety regulations in such a scenario. Alternatively, it will be understood by the person skilled in the art that the ceiling fan 10 may further comprise one or more lights.

[00115] The transverse cross-section of the body member 51 of the example fastener 40, apart from the ribs 41 , 47, has a substantially circular shape along the length of the member 51 for insertion through the matching corresponding circular opening 31. However, it will be understood by a person skilled in the art that the transverse cross-section of the body member 51 may be other shapes, for example square-shaped, and/or may vary along the length of the fastener, with the opening being a corresponding shape that preferably matches the cross- section at the base 49 of the fastener 40.

[00116] Although the example fastener 40 comprises three receptacles 44, 45, 46, the person skilled in the art will understand the fastener 40 may comprise a single receptacle 45 arranged for releasable engagement with protrusions in the form of the locking tips 33 to releasbly secure the canopy cover 30 relative to the canopy mount 50. The fastener 40 may not comprise one or both of the receptacles 44, 46. The receptacle 44, where present, advantageously releasably engages with the locking tips 33 to releasably retain the fastener relative to the canopy cover 30 when the fastener 40 is partially inserted through the opening 31 pre- installation or during installation of the canopy cover 30 (Figs. 2-5 and 13). The receptacle 46, where present, advantageously releasably engages with the locking tips 33 to releasably retain the fastener relative to the canopy cover 30 when the fastener 40 is pushed through the opening 31 to disengage the canopy cover 30 from the canopy mount 50.

[00117] Further, although the example cover 30 has a lower opening 31 (as seen in the Figures) such that the fastener 40 is inserted in a substantially vertically insertion direction to secure the canopy30, it will be understood by a person skilled in art that the opening 31 may alternatively be formed in a side or lateral portion of a body of the canopy cover 30. The fastener 40 may be inserted through the opening 31 in an insertion direction that is oblique or substantially perpendicular to a vertical axis when the cover 30 secured to a ceiling fan 10 (or light fixture) affixed to a ceiling.

[00118] Unless specified to the contrary, any and all components herein described are understood to be capable of being manufactured and, as such, may be manufactured together or separately.

[00119] Moreover, in interpreting the disclosure, all terms should be interpreted in the broadest reasonable manner consistent with the context. In particular, the terms“comprises” and“comprising” should be interpreted as referring to

elements, components, or steps in a non-exclusive manner, indicating that the referenced elements, components, or steps may be present, or utilized, or combined with other elements, components, or steps that are not expressly referenced.

[00120] The subject headings used in the detailed description are included only for the ease of reference of the reader and should not be used to limit the subject matter found throughout the disclosure or the claims. The subject headings should not be used in construing the scope of the claims or the claim limitations.

[00121 ] Although the technology herein has been described with reference to particular examples, it is to be understood that these examples are merely illustrative of the principles and applications of the technology. In some instances, the terminology and symbols may imply specific details that are not required to practice the technology. For example, although the terms“first” and“second” may be used, unless otherwise specified, they are not intended to indicate any order but may be utilised to distinguish between distinct elements.

[00122] While various embodiments of the present invention have been described above, it should be understood that they have been presented by way of example only, and not by way of limitation. It will be apparent to a person skilled in the relevant art that various changes in form and detail can be made therein without departing from the spirit and scope of the invention. Thus, the present invention should not be limited by any of the above described exemplary embodiments.

[00123] The reference in this specification to any prior publication (or information derived from it), or to any matter which is known, is not, and should not be taken as an acknowledgment or admission or any form of suggestion that that prior publication (or information derived from it) or known matter forms part of the common general knowledge in the field of endeavour to which this

specification relates.