KINEMATICS ASSEMBLY

Abstract

A kinematics assembly may include a control lever configured to drive a plurality of air flaps, a cam disc, and a bearing plate. The cam disc may include a bearing pin and the bearing plate may have a bearing opening in which the cam disc is mounted via the bearing pin. At least one groove may be disposed at the bearing opening. The bearing pin may include a tongue structured in a complementary manner to the at least one groove. The cam disc may be rotationally fixed to the bearing plate in a predefined mounting position in which the tongue is engaged in the at least one groove. The cam disc may be rotatably mounted on the bearing plate in an operating position in which the cam disc is displaced in an axial direction such that the tongue is not engaged in the at least one groove.

Claims

1. A kinematics assembly, comprising: a control lever configured to drive a plurality of air flaps; a cam disc including a bearing pin; a bearing plate with a bearing opening in which the cam disc is mounted via the bearing pin; at least one groove disposed at the bearing opening; the bearing pin including a tongue structured in a complementary manner to the at least one groove; wherein the cam disc is rotationally fixed to the bearing plate in a predefined mounting position in which the tongue is engaged in the associated at least one groove; and wherein the cam disc is rotatably mounted on the bearing plate in an operating position in which the cam disc is displaced in an axial direction of the bearing pin such that the tongue is not engaged in the at least one groove.

2. The kinematics assembly according to claim 1, further comprising a guide pin arranged on the control lever, the guide pin engaged in a slide guide of the cam disc.

3. The kinematics assembly according to claim 1, further comprising a plurality of crush ribs arranged on the bearing pin facilitating a fixing of the bearing pin, when the cam disc is in the mounting position, in the bearing opening.

4. The kinematics assembly according to claim 1, wherein the control lever includes a further bearing pin, and the bearing plate has a further bearing opening structured in a complementary manner to the further bearing pin.

5. The kinematics assembly according to claim 4 wherein the control lever is rotatably mounted via the further bearing pin engaged in the further bearing opening.

6. The kinematics assembly according to claim 1, further comprising a tooth contour arranged on the bearing pin.

7. An air-conditioning system comprising a kinematics assembly and a drive arrangement, the kinematics assembly including: a control lever configured to drive at least one air flap; a bearing plate with a bearing opening and at least one groove disposed at the bearing opening; a cam disc including a bearing pin, the bearing pin including a tongue structured in a complementary manner to the at least one groove, the cam disc mounted within the bearing opening via the bearing pin; the cam disc rotationally fixed to the bearing plate when in a mounting position in which the tongue is engaged in the at least one groove; the cam disc rotatably mounted on the bearing plate when in an operating position in which the cam disc is displaced in an axial direction of the bearing pin such that the tongue is not engaged in the at least one groove; and wherein the drive arrangement is connected with the cam disc in a rotationally driving manner.

8. The air-conditioning system according to claim 7, wherein the at least one air flap is connected with the control lever.

9. A motor vehicle comprising an air-conditioning system including a kinematics assembly and a drive arrangement, the kinematics assembly including: a control lever configured to drive at least one air flap; a bearing plate with a bearing opening and at least one groove disposed at the bearing opening; a cam disc including a bearing pin, the bearing pin including a tongue structured in a complementary manner to the at least one groove, the cam disc mounted within the bearing opening via the bearing pin; the cam disc rotationally fixed to the bearing plate when in a mounting position in which the tongue is engaged in the at least one groove; the cam disc rotatably mounted on the bearing plate when in an operating position in which the cam disc is displaced in an axial direction of the bearing pin such that the tongue is not engaged in the at least one groove; and wherein the drive arrangement is connected with the cam disc in a rotationally driving manner.

10. The motor vehicle according to claim 9, further comprising a guide pin arranged on the control lever, the guide pin engaged in a slide guide of the cam disc.

11. The motor vehicle according to claim 9, further comprising a plurality of crush ribs arranged on the bearing pin facilitating a fixing of the bearing pin in the bearing opening when the cam disc is in the mounting position.

12. The motor vehicle according to claim 9, wherein the control lever includes a further bearing pin, and the bearing plate has a further bearing opening structured in a complementary manner to the further bearing pin.

13. The motor vehicle according to claim 12, wherein the control lever is rotatably mounted via the further bearing pin engaged in the further bearing opening.

14. The motor vehicle according to claim 9, further comprising a tooth contour arranged on the bearing pin.

15. The air-conditioning system according to claim 8, wherein: the control lever includes a guide pin arranged in a slide guide of the cam disc and a further bearing pin engaged within a further bearing opening of the bearing plate; and the guide pin is slideably engaged in the slide guide such that a twisting of the cam disc adjusts a position of the control level and actuates the at least one air flap.

16. The kinematics assembly according to claim 1, wherein: the cam disc includes a slide guide, the bearing plate has a further bearing opening, and the control lever includes a guide pin and a further bearing pin; and the guide pin is slideably engaged in the slide guide and the further bearing pin is engaged in the further bearing opening when the cam disc is in the mounting position.

17. The kinematics assembly according to claim 2, wherein the guide pin is slideably engaged in the slide guide such that a twisting of the cam disc adjusts a position of the control level.

18. The kinematics assembly according to claim 3, wherein the plurality of crush ribs are deformable and project from the bearing pin such that the bearing pin is radially larger than the bearing opening, and wherein a deformation of the plurality of crush ribs axially secures the bearing pin within the bearing opening when the cam disc is in the mounting position.

19. The kinematics assembly according to claim 6, wherein the tooth contour includes a plurality of teeth facilitating a torque-transmitting, play-free connection between the cam disc and a drive arrangement.

20. The kinematics assembly according to claim 6, wherein the tooth contour is an external toothing.

Description

BRIEF DESCRIPTION OF THE DRAWINGS

[0019] There are shown here, respectively diagrammatically,

[0020] FIG. 1 shows a kinematics assembly according to the invention, in an exploded view,

[0021] FIG. 2 shows a view onto a cam disc of the kinematics assembly.

DETAILED DESCRIPTION

[0022] According to FIG. 1, a kinematics assembly 1 according to the invention for an air-conditioning system 2 of a motor vehicle 3, which is not illustrated in further detail, has a control lever 4 for the driving of, in particular, air flaps (not shown), and a cam disc 5 and a bearing plate 6. The cam disc 5 has here a bearing pin 7 (cf. also FIG. 2), while the bearing plate 6 has a bearing opening 8, in which the cam disc 5 is mounted by means of its bearing pin 7 in a mounting position in a torque-proof manner and rotatably in an operating position. According to the invention, at least one groove 9, here two grooves 9, is/are now provided at the bearing opening 8, wherein on the bearing pin 7 of the cam disc 5 at least one tongue 10, formed in a complementary manner to the groove 9, here two tongues 10, is/are provided. In a predefined mounting position, the cam disc 5 engages here with its tongue 10, i.e. in the present case with its tongues 10, into the associated groove 9 or respectively grooves 9 of the bearing plate 6, and creates thereby a rotationally fixed connection between the cam disc 5 and the bearing plate 6. In this predefined mounting position, the control lever 4 is likewise mounted here on the bearing plate 6 and on the cam disc 5, wherein in the mounting position the control lever 4 engages with its guide pin 11 into an associated slide guide 12 of the cam disc 5 and is mounted via a further bearing pin 13 in an associated further bearing opening 14 of the bearing plate 6.

[0023] In this mounting position, the thus prefabricated kinematics assembly 1 is mounted onto a housing of the air-conditioning system 2, wherein on the subsequent connecting of a drive arrangement, a drive shaft of the drive arrangement displaces the cam disc 5 in axial direction and removes the tongue 10 from the groove 9 and thereby releases the groove-and-tongue connection. In this operating position, the cam disc 5 is therefore displaced in axial direction 15 in such a way that it no longer engages with its tongue 10 into the associated groove 9 of the bearing plate 6 and thereby is then rotatably mounted on the latter.

[0024] Observing FIG. 2 further, it can be seen that crush ribs 16 are arranged on the bearing pin 7, which permit a fixing thereof, i.e. of the bearing pin 7 in the mounting position in the bearing opening 8 of the bearing plate 6. Furthermore on the bearing pin 7 a tooth contour 17, in particular in the manner of an internal toothing, is arranged, which subsequently enables a torque-transmitting connection to the drive shaft of the drive arrangement.

[0025] With the kinematics assembly 1 according to the invention it is possible to create a coordination of the mechanism exclusively between the cam disc 5 and the bearing plate 6 owing to the groove-and-tongue connection with the groove 9 and the tongue 10, and namely independently of a housing of the air-conditioning system 2, whereby the tolerance chain can be distinctly shortened and a process reliability can be distinctly increased. The realization of the groove-and-tongue connection can be made possible here in a comparatively simple manner by a corresponding adapting of the plastic injection moulding tools for the production of the bearing plate 6 or respectively for the production of the cam disc 5, whereby the shortening of the tolerance chain is able to be achieved with only marginal additional costs in relation to the unit costs.