The invention relates to a mounting clip to mount an actuator unit to a valve unit. Further on, the invention relates to an assembly having an actuator unit, a valve unit and a mounting clip.

DE 10 2017 209459 B4 discloses an assembly comprising a valve unit having a valve unit housing and an actuator unit having an actuator unit housing. A flange of the valve unit housing has through holes. A shoulder of the actuator unit housing surrounds a control terminal of the actuator unit coaxially to a con trol axis of the control terminal. The shoulder of the actuator unit housing has bolts which extend in the direction parallel to the control axis of the control ter minal away from the shoulder and which are configured to penetrate into the through holes in the flange of the valve unit housing so that the bolts upon at tachment of the actuator unit on the flange of the valve unit housing protrude through the through holes in the flange of the valve unit housing. The assembly further comprises a mounting element to fix the actuator unit on the valve unit upon attachment of the actuator unit on the flange of the valve unit housing. This mounting element is provided by a fork-shaped splint. Such a fork-shaped splint is complex in manufacturing and expensive.

US 6681 458 B2 discloses a mounting clip for retaining an electrical connector in a coupled engagement. This mounting clip is not suitable to replace the known fork-shaped splint used to fix an actuator unit on a valve unit upon at tachment of the actuator unit on the valve unit.

US 5 581 222 A discloses a valve unit assembly with connection by a clip. This mounting clip is not suitable to replace the known fork-shaped splint used to fix an actuator unit on a valve unit upon attachment of the actuator unit on the valve unit. The brochure “FIREFLY FIRE CLIPS, EL266/19023, Marshall-Tufflex Ltd” shows several different fire clips also not suitable to replace the known fork shaped splint used to fix an actuator unit on a valve unit upon attachment of the actuator unit on the valve unit. The Product Information “Fire Clip External MMT2, Marshall-Tufflex Ltd, 12-9-2019” shows details of one of said fire clips.

EP 3015767 B1 , EP 1 008804 A2 and EP 2801 672 A1 show other mounting elements. EP 3 015 767 B1 shows a mounting element used to mount a gas valve unit to a gas/air mixer. EP 1 008804 A2 shows a mounting element used to mount a gas duct to gas valve unit. EP 2 801 672 A1 shows a mounting ele ment to mount housing sections of back flow preventers. All these mounting elements are not suitable to replace the known fork-shaped splint used to fix an actuator unit on a valve unit.

A novel mounting clip is needed allowing a simple and reliable fixation of an actuator unit on a valve unit upon attachment of the actuator unit on the valve unit being easy and cheap in manufacturing. Against this background, a novel mounting clip to mount an actuator unit to a valve unit is provided.

The novel mounting clip is configured to mount an actuator unit to a valve unit, the valve unit having a valve unit housing and a flange formed at the valve unit housing, the actuator unit having an actuator unit housing and a shoulder formed at the actuator unit housing.

The novel mounting clip has first sections positioned in first level, wherein said first sections are straight and run parallel to each other within said first level, and wherein said straight sections are configured to be inserted into grooves provided at the shoulder of the actuator unit. The novel mounting clip has a second section positioned in a second level, wherein said second section is U-shaped, and wherein said second section is configured to be inserted into a recess provided at the flange of the valve unit.

The novel mounting clip has third sections extending between each of said first sections and the second section, wherein each of said third sections has a first subsections being bent, a second subsection being bent and a third subsection being straight or angled. The first subsections of the third sections extend be tween the first sections and the third subsections of the third sections. The sec ond subsections of the third sections extend between the second section and the third subsections of the third sections.

The novel mounting clip allows a simple and secure fixation of an actuator unit on a valve unit upon attachment of the actuator unit on the valve unit being easy and cheap in manufacturing.

According to a first embodiment of the mounting clip, the third subsections of the third sections are positioned in a third level, said third level being positioned between said first level and said second level, wherein the first subsections of the third sections extend between the third level and said first level, and wherein the second subsections of the third sections extend between the third level and said second level. The third level may run parallel to the second level. The third level and the second level may enclose an acute angle with first level. The sec ond subsections of the third sections may be positioned in fourth levels running perpendicular to the third level. The first subsections of the third sections may be positioned in fifth levels, wherein the fifth levels and the fourth levels enclose an acute angle, and wherein the fifth levels converge from the first level towards the third level. The first embodiment of the mounting clip is most preferred. The same is very easy and very cheap in manufacturing. According to a second embodiment of the mounting clip, the third subsections of the third sections are positioned in said second level offset from said second section, wherein the first subsections of the third sections extend between the first level and said second level, wherein the second subsections of the third sections are positioned in a third level. The third level and the second level may enclose an obtuse angle. The first level and the second level may enclose an acute angle.

All sections of the mounting clip are made from one monolithic metal wire. The metal wire may have a diameter in a range between 1.0 mm and 3.5 mm, pre ferred in a range between 1.5 mm and 3.0 mm, most preferred in a range be tween 2.0 mm and 2.5 mm.

The assembly having an actuator unit, a valve unit and a mounting clip is de fined in claim 14.

Preferred developments of the invention are provided by the dependent claims and the description which follows. Exemplary embodiments are explained in more detail on the basis of the drawing, in which:

Figure 1a shows an assembly having an actuator unit, a valve unit and a mounting clip;

Figure 1b shows an actuator unit and a valve unit being disassem bled from each other;

Figures 2a to 2e show different views of a first mounting clip; Figures 3a to 3e show different views of a second mounting clip.

Figure 1 shows an assembly having an actuator unit 10, a valve unit 20 and a mounting clip 30. The valve unit 10 has a valve unit housing 11 and a flange 12 formed at the valve unit housing 11 , namely at an inlet section 13 of the valve unit housing 11. The flange 12 of the valve unit housing 11 has openings 14 (see Figure 1 b). The actuator unit 20 has an actuator unit housing 21 and a shoulder 22 formed at the actuator unit housing 21. The shoulder 22 of the actuator unit housing 21 surrounds a control terminal 23 of the actuator unit 21 coaxially to a control axis of the control terminal 23. The shoulder 22 of the actuator unit housing 21 has bolts 24 (see Figure 1b). The bolts 24 extend in the direction parallel to the con- trol axis of the control terminal 23 away from the shoulder 22. The bolts 24 are configured to penetrate into the openings 14 in the flange 12 of the valve unit housing 11 so that the bolts 24 upon attachment of the actuator unit 20 on the flange 12 of the valve unit 10 protrude into the openings 14 in the flange 12. In Figure 1 the mounting clip 30 shown in Figures 2a to 2e is used to fix the ac tuator unit 20 on the valve unit 10 upon attachment of the actuator unit 20 on the flange 12 of the valve unit housing 11.

The mounting clip 30 has first sections 31 positioned in first level 32, wherein said first sections 31 are straight and run parallel to each other within said first level 32. Said first sections 31 are configured to be inserted into grooves 25 provided at the shoulder 22 of the actuator unit 20.

The mounting clip 30 has a second section 33 positioned in a second level 34, wherein said second section 33 is U-shaped. Said second section 33 is config ured to be inserted into a recess 15 provided at the flange 12 of the valve unit 11.

The mounting clip 30 has third sections 35 extending between each of said first sections 31 and the second section 33. Each of said third sections 35 has a first subsections 35a being bent, a second subsection 35b being bent and a third subsection 35c being straight.

The first subsections 35a of the third sections 35 extend between the first sec- tions 31 and the third subsections 35c of the third sections 35. The second sub sections 35b of the third sections 35 extend between the second section 33 and the third subsections 35c of the third sections 35.

The third subsections 35c of the third sections 35 are positioned in a third level 36. Said third level 36 is positioned between said first level 32 and said second level 34. See Figure 2c. The distance between the third level 36 and the first level 32 is larger than the distance between the third level 36 and the second level 34. A bending radius of the first subsections 35a is greater than a bending radius of the second subsections 35b.

The first subsections 35a of the third sections 35 extend between the third level 36 and said first level 32. The second subsections 35b of the third sections 35 extend between the third level 36 and said second level 34. The third level 36 runs parallel to the second level 34. The third level 36 and the second level 34 each enclose an acute angle b1 with first level 32. The acute angle b1 may be between 2° and 20°, preferably between 5° and 15°.

The second subsections 35b of the third sections 35 are positioned in fourth levels 37 running perpendicular to the third level 36. The first subsections 35a of the third sections 35 are positioned in fifth levels 38. The fifth levels 38 and the fourth levels 37 enclose an acute angle b2. The acute angle b2 may be be tween 5° and 25°. The fifth levels 38 converge from the first level 32 towards the third level 36 and towards the second level 34. The first sections 31 being positioned in first level 32 have angled end sections 31a.

All sections 31, 33, 35 of the mounting clip 30 are made from one monolithic metal wire. The monolithic metal wire may have a diameter in a range between

I.0 and 3.5 mm, preferred in a range between 1.5 and 3.0 mm, most preferred in a range between 2.0 and 2.5 mm.

The mounting clip 40 shown in Figures 3a to 3e may alternatively be used to fix the actuator unit 20 to or at the valve unit 10 upon attachment of the actuator unit 20 on the flange 12 of the valve unit housing 11.

The mounting clip 40 has first sections 41 positioned in first level 42, wherein said first sections 41 are straight and run parallel to each other within said first level 42. Said first sections 41 are configured to be inserted into grooves 25 provided at the shoulder 22 of the actuator unit 20.

The mounting clip 40 has a second section 43 positioned in a second level 44, wherein said second section 43 is U-shaped. Said second section 43 is config ured to be inserted into a recess 15 provided at the flange 12 of the valve unit

I I .

The mounting clip 40 has third sections 45 extending between each of said first sections 41 and the second section 43.

Each of said third sections 45 has a first subsections 45a being bent, a second subsection 45b being bent and a third subsection 45c being angled.

The first subsections 45a of the third sections 45 extend between the first sec tions 41 and the third subsections 45c of the third sections 45. The second subsections 45b of the third sections 45 extend between the sec ond section 43 and the third subsections 45c of the third sections 45.

The third subsections 45c of the third sections 45 are positioned in said second level 44 offset from said second section 43. The second section 43 is positioned between the third subsections 45c of the third sections 45.

The first subsections 45a of the third sections 45 extend between the first level 42 and said second level 44. The second subsections 45b of the third sections 45 are positioned in a third level 46.

The third level 46 and the second level 44 enclose an obtuse angle a1. See Figure 3c. The obtuse angle a1 may be between 155° and 175°.

The first level 42 and the second level 44 enclose an acute angle a2. The acute angle a2 may be between 2° and 20°, preferably between 5° and 15°.

The first subsections 45a of the third sections 45 are positioned in a fourth lev els 47. The fourth levels 47 run perpendicular to the first level 42.

All sections 41, 43, 45 of the mounting clip 40 are made from one monolithic metal wire. The monolithic metal wire may have a diameter in a range be-tween 1.0 and 3.5 mm, preferred in a range between 1.5 and 3.0 mm, most preferred in a range between 2.0 and 2.5 mm.

The invention provides a simple and reliable attachment and fixation of an actu ator unit 20 and valve unit 10. The solution provided by the novel mounting clip 30, 40 is cheap, easy and reliable. The clip 30, 40 is a spring type clip with pre load in assembly. The clip 30, 40 is designed in the way that allows simple mounting and dis mounting without a tool. The mounting and dismounting of the clip are toolless.

During the installation (pressing in) of the clip 30, 40 the preload of the clip 30, 40 provides haptic feedback to installer that end position is not reached. In mo ment of reaching end position the haptic feedback is provided to installer.

The force of the preload of an installed clip 30, 40 provides secure coupling of actuator unit 20 and valve unit 10.

List of reference signs

10 valve unit 11 valve unit housing

12 flange

13 inlet section

14 opening

15 recess

20 actuator unit

21 actuator unit housing

22 shoulder

23 control terminal 24 bolt

25 groove

30 mounting clip

31 first section 31a end section

32 first level

33 second section

34 second level

35 third section 35a first subsection 35b second subsection 35c third subsection

36 third level

37 fourth level

38 fifth level 40 mounting clip

41 first section 41a end section

42 first level 43 second section

44 second level

45 third section 45a first subsection 45b second subsection 45c third subsection

46 third level

47 fourth level