Rear wiper motor output shaft supporting pad structure

Abstract

The utility model discloses a rear wiper motor output shaft supporting pad structure which comprises an output shaft, a mounting plate, a supporting pad and a gear assembly, the output shaft is matched with the gear assembly, the end face of the output shaft is matched with the supporting pad, and the supporting pad is matched with the mounting plate. The supporting pad comprises a supporting pad inner surface, a supporting pad outer surface, a supporting pad elastic structure and a supporting pad limiting structure, the supporting pad inner surface is a plane and matched with the output shaft end face of the output shaft, and the supporting pad outer surface is an arc surface and matched with the surface of the mounting plate. The supporting pad elastic structures and the supporting pad limiting structures are evenly distributed on the periphery of the supporting pad body at intervals, and the supporting pad elastic structures and the supporting pad limiting structures are matched with the gear assembly supporting face. According to the utility model, a supporting pad elastic and limiting structure is added, so that a gap generated by abrasion of the supporting pad of the rear wiper motor is reduced, and the problem that meshing of gear assemblies in the motor is affected due to increase of the internal gap of the motor and axial movement of the output shaft is avoided.

Description

TECHNICAL FIELD

[0001] The utility model relates to a rear wiper motor output shaft support pad structure, and it is mainly used for various types of rear wiper motor of automobile. BACKGROUND

[0002] When the rear wiper motor is running, the output shaft rotates, and the output shaft and the mounting plate will move relatively. In order to avoid abnormal sound, a support pad is added between the output shaft and the mounting plate to reduce friction and thus reduce the noise generated when the motor is working. The rear wiper motor output shaft support pad will wear after the motor runs for a period of time, resulting in an increase in the internal clearance of the motor, axial movement of the output shaft, and thus affecting the meshing of the internal gear assembly of the motor. In severe cases, the gears may be locked. SUMMARY

[0003] The utility model discloses a rear wiper motor output shaft support pad structure, compared with the traditional structure, the support pad elasticity and the limit structure are added, the gap generated by the support pad wear of the rear wiper motor is reduced.

[0004] The utility model discloses a technical scheme:

[0005] A rear wiper motor output shaft support pad structure, comprising an output shaft, a mounting plate, a support pad and a gear assembly, the output shaft cooperates with the gear assembly, the output shaft end surface cooperates with the support pad, the support pad cooperates with the mounting plate, the support pad comprises a support pad inner surface, a support pad outer surface, a support pad elastic structure and a support pad limiting structure, the support pad inner surface is a plane cooperating with the output shaft end surface of the output shaft, the support pad outer surface is a circular arc surface cooperating with the surface of the mounting plate, a plurality of support pad elastic structures and support pad limiting structures are uniformly distributed around the support pad body, and the support pad elastic structure and the support pad limiting structure cooperate with the gear assembly support surface.

[0006] Further, the support pad elastic structure and the support pad limiting structure each have six.

[0007] Further, the output shaft end surface of the output shaft cooperates with the gear assembly support surface of the gear assembly. When the support pad is assembled onto the output shaft without external force, a gap is left between the output shaft end surface and the support pad inner surface; when the support pad is stressed, the output shaft end surface is attached to the support pad inner surface, the support pad elastic structure is compressed to generate elastic force, and the support pad limiting structure is limited.

[0008] The utility model adds the support pad elasticity and the limit structure, reduces the gap generated by the support pad wear of the rear wiper motor, avoids the problems of the increase in the internal clearance of the motor, the axial movement of the output shaft and the meshing of the internal gear assembly of the motor. BRIEF DESCRIPTION OF DRAWINGS

[0009] Figure 1is the assembly schematic view of the rear wiper motor output shaft, mounting plate and support pad;

[0010] Figures 2-4 is the schematic view of the support pad in different directions;

[0011] Figure 5 is the schematic view of the support pad in the free state after assembly;

[0012] Figure 6 is the A-A sectional view of Figure 5 ;

[0013] Figure 7 is the schematic view of the support pad in the assembled state after assembly;

[0014] Figure 8 is the B-B sectional view of Figure 7 .

[0015] Marked in the figure: 1, output shaft; 2, mounting plate; 3, support pad; 4, gear assembly;

[0016] 31, inner surface of support pad; 32, outer surface of support pad; 33, elastic structure of support pad; 34, limiting structure of support pad; 41, gear assembly support surface. DETAILED DESCRIPTION

[0017] The utility model will be further described below by means of the drawings and examples.

[0018] A rear wiper motor output shaft support pad structure, such as Figure 1 The assembly schematic view of the rear wiper motor output shaft, mounting plate and support pad, 1 indicates the output shaft, 2 indicates the mounting plate, 3 indicates the support pad, and 4 indicates the gear assembly.

[0019] As shown in Figures 2-4 , it is a support pad structure schematic view, 31 indicates the inner surface of support pad, 32 indicates the outer surface of support pad, 33 indicates the elastic structure of support pad, and 34 indicates the limiting structure of support pad. The inner surface 31 of support pad is a plane matched with the output end face, 32 indicates that the outer surface of support pad is a circular arc surface matched with the mounting plate 2, the elastic structure 33 of support pad and the limiting structure 34 of support pad are similar to petals, matched with the gear assembly 4 support surface, and play the roles of rebounding and reducing gap and limiting.

[0020] As shown in Figures 5-6 , it is a schematic view of the support pad in the free state after assembly, 11 indicates the output shaft end face, and 41 indicates the gear assembly support surface. When the support pad 3 is assembled on the output shaft 1 and is not subjected to external force, a gap is left between the output shaft end face 11 and the inner surface 31 of support pad.

[0021] As shown in Figures 7-8The support pad 3 is assembled to the output shaft 1, and after the motor is assembled, the outer surface 32 of the support pad 3 is matched with the surface of the mounting plate 2, the support pad 3 is stressed, the output shaft end surface 11 is attached to the inner surface 31 of the support pad, the elastic structure 33 of the support pad is compressed to generate elastic force, and the limiting structure 34 of the support pad is limited.

[0022] The above merely describes specific embodiments of the present application, but the protection scope of the present application is not limited thereto, any person skilled in the art can easily think of changes or replacements within the technical range disclosed by the patent, which should be covered in the protection scope of the present application, therefore, the protection scope of the present application should be subject to the protection scope of the claims.

Claims

1. A rear wiper motor output shaft support pad structure comprising an output shaft (1), a mounting plate (2), a support pad (3) and a gear assembly (4), the output shaft (1) cooperating with the gear assembly (4), the output shaft (1) end face cooperating with the support pad (3), the support pad (3) cooperating with the mounting plate (2), characterized in that: The support pad (3) comprises a support pad inner surface (31), a support pad outer surface (32), a support pad elastic structure (33), a support pad limiting structure (34), the support pad inner surface (31) is a plane matched with the output shaft end surface (11) of the output shaft (1), the support pad outer surface (32) is a circular arc surface matched with the surface of the mounting plate (2), a plurality of support pad elastic structures (33) and support pad limiting structures (34) are uniformly distributed on the periphery of the support pad body, and the support pad elastic structure (33) and the support pad limiting structure (34) are matched with the support surface of the gear assembly (4).

2. A rear wiper motor output shaft support pad structure as claimed in claim 1, characterized in that: The support pad elastic structure (33) and the support pad limiting structure (34) are six respectively.

3. A rear wiper motor output shaft support pad structure as claimed in claim 1, characterized in that: The output shaft end surface (11) of the output shaft (1) is matched with the gear assembly support surface (41) of the gear assembly (4).

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