Grounding structure of wiper motor brush carrier ring

Abstract

A wiper motor brush carrier ring grounding structure disclosed by the present invention comprises a speed reducer shell, a brush carrier ring part and a grounding piece, the grounding piece is downwards assembled on the brush carrier ring part, and a third bending structure of the grounding piece is opened through the side surface of the brush carrier ring part and is downwards installed to contact with a matching surface of the brush carrier ring part. The inverted buckling structure of the grounding piece is propped open through the side face of the brush carrier ring component and then makes contact with the step face of the brush carrier ring component. The second bending structure of the grounding piece is in contact with a capacitor on the brush carrier ring component; the brush carrier ring part is installed in the speed reducer shell, the front end face of the brush carrier ring part makes contact with the installation side face of the speed reducer shell, the brush carrier ring part is guided to be installed, the arc structure at the front end of the grounding piece makes contact with the grounding face of the speed reducer shell, and the first bent structure of the grounding piece deforms and makes interference contact with the grounding face of the speed reducer shell. Through the structural design of the grounding piece and the brush carrier ring, simple and reliable assembly can be realized, and the grounding piece is prevented from overturning in the assembly process.

Description

Technical Field

[0001] The invention belongs to the technical field of motors, and in particular relates to a grounding structure of a wiper motor brush holder ring. Background Art

[0002] When assembling the existing wiper motor brush holder ring component, the grounding plate and the brush holder ring component are separate structures. The grounding plate needs to be buckled onto the brush holder ring first, which may fall off during transportation. The two parts are then interference fit together in the reducer housing. During the assembly process, the grounding plate may flip over, causing assembly difficulties and poor grounding problems.

[0003] In order to improve the above problems, a new brush holder ring grounding structure is designed, which can effectively improve the above problems. Summary of the invention

[0004] The purpose of the present invention is to provide a grounding structure for a wiper motor brush holder ring. The present invention can achieve simple and reliable assembly through the structural design of the grounding plate and the brush holder ring, and avoid the grounding plate from turning over during the assembly process.

[0005] The technical solution of the present invention is: A grounding structure of a wiper motor brush holder ring, comprising a reducer housing C, a brush holder ring component B and a grounding plate A, wherein the grounding plate A is assembled downwardly onto the brush holder ring component B, wherein the cross section of the grounding plate A is an inverted U-shaped body, wherein the rear side of the upper end of the inverted U-shaped body has two first bending structures A4 connected by two arc structures A5, respectively, and the middle of the upper end of the inverted U-shaped body has two second bending structures A3, and the two sides of the bottom end of the inverted U-shaped body have inwardly facing inverted structures A2, and the lower end of the inverted structure A2 also has a third bending structure A1; the third bending structure A1 of the grounding plate A is spread open by a side surface B1 of the brush holder ring component, and is assembled downwardly to be assembled with the brush holder ring component B. The inverted structure A2 of the grounding plate A is opened by the side surface B1 of the brush holder ring component and contacts the step surface B2 of the brush holder ring component B; the second bending structure A3 of the grounding plate A contacts the capacitor B4 on the brush holder ring component B; the brush holder ring component B is installed in the reducer housing C, and the front end surface B5 of the brush holder ring component B contacts the installation side surface C1 of the reducer housing C to guide the installation of the brush holder ring component B. During the installation process, the arc structure A5 at the front end of the grounding plate A contacts the grounding surface C2 of the reducer housing C, and at the same time, the first bending structure A4 of the grounding plate A is deformed and contacts the grounding surface C2 of the reducer housing C.

[0006] The present invention can realize simple and reliable assembly through the structural design of the grounding plate and the brush holder ring, and avoid the grounding plate from turning over during the assembly process. BRIEF DESCRIPTION OF THE DRAWINGS

[0007] Figure 1 This is a schematic diagram of the grounding plate assembly. Figure 2 is a schematic diagram of the grounding plate (including a cross-sectional view), Figure 3 It is a schematic diagram of the brush holder ring component structure (including a cross-sectional view). Figure 4 This is a schematic diagram of the grounding structure of the reducer housing.

[0008] In the figure: A, grounding plate, B, brush holder ring component, C, reducer housing; A1, third bending structure, A2, undercut structure, A3, second bending structure, A4, first bending structure, A5, arc structure; B1, side surface, B2, step surface, B3, mating surface, B4, capacitor, B5, front end surface; C1, installation side, C2, grounding surface. DETAILED DESCRIPTION

[0009] The present invention is further described below in conjunction with the accompanying drawings. In the accompanying drawings, parts with the same or similar functions or structures are represented by the same reference numerals.

[0010] like Figure 1-4 As shown, a grounding structure of a wiper motor brush holder ring comprises a reducer housing C, a brush holder ring component B and a grounding plate A, wherein the grounding plate A is assembled downwardly onto the brush holder ring component B, wherein the cross section of the grounding plate A is an inverted U-shaped body, wherein the rear side of the upper end of the inverted U-shaped body comprises two first bending structures A4 connected by two arc structures A5 respectively, wherein the middle of the upper end of the inverted U-shaped body comprises two second bending structures A3, wherein the two sides of the bottom end of the inverted U-shaped body comprise inwardly facing inverted buckle structures A2 respectively, and the lower end of the inverted buckle structure A2 comprises a third bending structure A1; wherein the bending structure A1 of the grounding plate A is spread open by the side surface B1 of the brush holder ring component, and contacts with the mating surface B3 of the brush holder ring component B during the downward installation process, wherein the inverted buckle structure A2 of the grounding plate A is spread open by the side surface B1 of the brush holder ring component, and contacts with the step surface B2 of the brush holder ring component, thereby preventing the grounding plate A from falling out, and the bending structure A3 of the grounding plate A contacts with the capacitor B4 on the brush holder ring component B, thereby connecting the circuit. Install the brush holder ring component B into the reducer housing C. At this time, the front end face B5 of the brush holder ring component B contacts the side face C1 of the reducer housing C to guide the brush holder ring component B to be installed. During the installation process, the arc structure A5 at the front end of the grounding plate A contacts the grounding surface C2 of the reducer housing C. At the same time, the bending structure A4 of the grounding plate A is deformed and contacts the grounding surface C2 of the reducer housing C to ensure the grounding effect.

[0011] The above is only a specific embodiment of the present invention, but the protection scope of the present invention is not limited to the wiper motor, and also protects other types of DC brush motors. The present invention mainly protects the grounding sheet structure and the grounding related matching structure.

[0012] Any changes or substitutions that can be easily conceived by technicians familiar with the technical field within the technical scope disclosed by the present invention should be included in the protection scope of the present invention. Therefore, the protection scope of the present invention should be based on the protection scope of the claims.

Claims

1. A grounding structure for a wiper motor brush holder ring, characterized in that: The invention comprises a reducer housing (C), a brush holder ring component (B) and a grounding plate (A), wherein the grounding plate (A) is assembled downwardly onto the brush holder ring component (B), wherein the cross section of the grounding plate (A) is an inverted U-shaped body, wherein the rear side of the upper end of the inverted U-shaped body has two first bending structures (A4) connected by two arc structures (A5), wherein the middle of the upper end of the inverted U-shaped body has two second bending structures (A3), and the two sides of the bottom end of the inverted U-shaped body have inwardly facing inverted structures (A2), wherein the inverted structures (A2) are The lower end also has a third bending structure (A1); the third bending structure (A1) of the grounding plate (A) is opened by the side surface (B1) of the brush holder ring component and installed downward to contact the matching surface (B3) of the brush holder ring component (B); the undercut structure (A2) of the grounding plate (A) is opened by the side surface (B1) of the brush holder ring component and contacts the step surface (B2) of the brush holder ring component (B); the second bending structure (A3) of the grounding plate (A) contacts the capacitor (B4) on the brush holder ring component (B).

2. A grounding structure for a wiper motor brush holder ring as claimed in claim 1, characterized in that: The brush holder ring component (B) is installed in the reducer housing (C), the front end surface (B5) of the brush holder ring component (B) contacts the installation side surface (C1) of the reducer housing (C), and the brush holder ring component (B) is guided to be installed, the arc structure (A5) at the front end of the grounding plate (A) contacts the grounding surface (C2) of the reducer housing (C), and the first bending structure (A4) of the grounding plate (A) is deformed and comes into interference contact with the grounding surface (C2) of the reducer housing (C).

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