Automobile generator carbon brush support

Abstract

The utility model provides an automobile generator carbon brush support, and belongs to the field of automobile parts. The problem that an existing support is poor in heat dissipation is solved. The automobile generator carbon brush support comprises a barrel-shaped insulating shell and a square-barrel-shaped conductive piece vertically arranged in the insulating shell, the conductive piece is defined by two side walls I arranged in parallel and two side walls II arranged in parallel, the outer diameter of the conductive piece is smaller than the inner diameter of the insulating shell, and the central axes of the conductive piece and the insulating shell are collinear; long-strip-shaped protruding parts are vertically formed on the outer walls of the middles of the first two side walls, and the two protruding parts abut against the inner wall of the insulating shell. Clamping grooves axially penetrate through the two convex parts, two clamping strips matched with the clamping grooves are formed on the inner wall of the insulating shell, and the two clamping strips are clamped in the two clamping grooves respectively. The automobile generator carbon brush support is good in heat dissipation.

Description

Technical Field

[0001] The utility model belongs to the field of automobile accessories and relates to a carbon brush bracket, in particular to a carbon brush bracket for an automobile generator. Background Art

[0002] The carbon brush holder of the automobile generator is an important component of the generator. Its main function is to apply pressure to the carbon brush that is in sliding contact with the commutator or the surface of the collector ring through a spring, so that it can stably conduct current between the fixed body and the rotating body.

[0003] An existing carbon brush holder, such as a motor carbon brush holder disclosed in the Chinese Patent Library (application number: 201521016673.2), includes an insulating shell; a conductive member, the conductive member includes a tube body partially arranged in the insulating shell and a carbon brush slide groove located inside the tube body, and the front end of the side wall of the conductive member has a through hole; and a carbon brush assembly, the carbon brush assembly includes a carbon brush and a constant force spring, the carbon brush is slidably inserted into the carbon brush slide groove of the conductive member, the rear end face of the carbon brush is accommodated in the carbon brush slide groove and is electrically connected to the conductive member, one end of the constant force spring is pushed against the rear end face of the carbon brush, and the other end is inserted into the through hole of the conductive member and fixed.

[0004] In the above-mentioned carbon brush holder, the conductive part is clamped in the insulating shell, and the heat dissipation thereof is completely dependent on the insulating shell. The overall heat dissipation effect is not very good, which affects the stability of the motor. Utility Model Content

[0005] The utility model aims to solve the above problems in the prior art and proposes a carbon brush bracket for an automobile generator with good heat dissipation.

[0006] The purpose of the utility model can be achieved through the following technical solutions: a carbon brush bracket for an automobile generator, comprising a barrel-shaped insulating shell and a square barrel-shaped conductive member vertically arranged in the insulating shell, and the conductive member is surrounded by two side walls one and two side walls arranged in parallel, characterized in that the outer diameter of the conductive member is smaller than the inner diameter of the insulating shell, and the central axes of the conductive member and the insulating shell are collinear; a long strip-shaped convex portion is vertically formed on the middle outer wall of the two side walls one, and the two convex portions are pressed against the inner wall of the insulating shell; a card slot is axially penetrated on the two convex portions, and two card strips matching the card slot are formed on the inner wall of the insulating shell, and the two card strips are respectively clamped in the two card slots.

[0007] When the convex part is pressed on the inner wall of the insulating shell and the clamping groove and the clamping strip cooperate with each other, the conductive member is firmly locked in the insulating shell, so that the structure of the carbon brush bracket is extremely stable.

[0008] The outer diameter of the conductive part is set to be smaller than the inner diameter of the insulating shell, and the conductive part only contacts the inner wall of the insulating shell using a middle part of the side wall, so that there is a large gap between the conductive part and the insulating shell, and the gap is used to accelerate the heat dissipation of the conductive part, so that the generator can work stably.

[0009] In the above-mentioned automobile generator carbon brush bracket, the inner side of the middle portion of the above-mentioned side wall is recessed outward to form the above-mentioned convex portion on the outer side of the middle portion of the side wall, that is, the conductive part is formed into the above-mentioned convex portion by pressing and deforming, which is not only convenient for processing but also can reduce material input.

[0010] In the above-mentioned automobile generator carbon brush bracket, the cross section of the protrusion is in an arc shape to enhance the structural strength of the conductive part.

[0011] In the above-mentioned automobile generator carbon brush bracket, the inner hole of the insulating shell is a square that matches the conductive member, so as to increase the area of ​​the gap formed between the insulating shell and the conductive member and further accelerate the heat dissipation of the conductive member.

[0012] In the above-mentioned automobile generator carbon brush bracket, the cross section of the clamping groove is roughly U-shaped, so as to increase the contact area between the clamping groove and the clamping strip and improve the positioning strength of the conductive member.

[0013] In the above-mentioned automobile generator carbon brush bracket, a straight groove is also provided on the inner wall of the insulating shell, the length of the straight groove extends vertically, and the upper end of the straight groove extends to the top surface of the insulating shell, and there are two straight grooves, which are respectively arranged opposite to the two side walls 2. The upper ends of the two straight grooves provided on the inner wall of the insulating shell are open and respectively opposite to the two side walls 2, so that a larger gap is formed between the insulating shell and the side wall 2, further accelerating the heat dissipation of the conductive part.

[0014] In the above-mentioned automobile generator carbon brush bracket, the cross section of the straight groove is roughly U-shaped to increase the size of the straight groove.

[0015] In the above-mentioned automobile generator carbon brush bracket, the insulating shell includes a plugging cap and a cylindrical body with both ends open, the plugging cap is fixed in the lower end of the body and closes the lower end of the body, the conductive member is vertically arranged in the body and pressed on the plugging cap, and the clamping strip is arranged on the inner wall of the body. The insulating shell adopts a split structure, which is convenient for processing and assembly.

[0016] In the above-mentioned automobile generator carbon brush bracket, the main body and the clamping strip are integrally formed by injection molding, which has the advantages of convenient processing and stable structure.

[0017] In the above-mentioned automobile generator carbon brush bracket, the plugging cap is screwed into the lower end of the main body, and a strip groove is radially opened on the bottom wall of the plugging cap for cooperating with a tool to facilitate the rotation of the plugging cap for disassembly and assembly.

[0018] Compared with the prior art, the carbon brush bracket of the automobile generator has the following advantages:

[0019] 1. The outer diameter of the conductive part is set to be smaller than the inner diameter of the insulating shell, and the conductive part only contacts the inner wall of the insulating shell using the middle part of the side wall, so that there is a large gap between the conductive part and the insulating shell, and the gap is used to accelerate the heat dissipation of the conductive part, so that the generator can work stably.

[0020] 2. The upper ends of the two straight grooves provided on the inner wall of the insulating shell are open and respectively arranged opposite to the two side walls 2, so that a larger gap is formed between the insulating shell and the two side walls, further accelerating the heat dissipation of the conductive parts. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a three-dimensional schematic diagram of the carbon brush bracket of the automobile generator.

[0022] Figure 2 It is a cross-sectional schematic diagram of the carbon brush bracket of the automobile generator.

[0023] Figure 3 It is a cross-sectional schematic diagram of the carbon brush bracket of the automobile generator in another direction.

[0024] In the figure, 1, insulating shell; 1a, main body; 1a1, clamping strip; 1b, blocking cap; 1b1, strip groove; 1c, straight groove; 2, conductive part; 2a, side wall one; 2b, side wall two; 2c, convex part; 2d, clamping slot. DETAILED DESCRIPTION

[0025] The following are specific embodiments of the present invention and the accompanying drawings to further describe the technical solution of the present invention, but the present invention is not limited to these embodiments.

[0026] like Figure 1 and Figure 2 As shown, the carbon brush holder of the automobile generator includes a barrel-shaped insulating shell 1 and a square barrel-shaped conductive member 2 vertically arranged in the insulating shell 1. The insulating shell 1 is open at the top and closed at the bottom, and the insulating shell 1 is made of plastic; the conductive member 2 is made of copper alloy or aluminum alloy.

[0027] Specifically,

[0028] The conductive member 2 is surrounded by two side walls 2a and two side walls 2b arranged in parallel, and the side wall 2a and the side wall 2b are arranged vertically.

[0029] like Figure 2 and Figure 3As shown, the outer diameter of the conductive member 2 is smaller than the inner diameter of the insulating shell 1, and the central axes of the conductive member 2 and the insulating shell 1 are collinear. A long strip-shaped convex portion 2c is vertically formed on the middle outer wall of the two side walls 2a, and the two convex portions 2c are pressed against the inner wall of the insulating shell 1. A slot 2d is axially penetrated through the two convex portions 2c, and two clamping strips 1a1 matching the slot 2d are formed on the inner wall of the insulating shell 1, and the two clamping strips 1a1 are clamped in the two slots 2d respectively. With the convex portion 2c pressed on the inner wall of the insulating shell 1 and the slot 2d and the clamping strip 1a1 working together, the conductive member 2 is firmly locked in the insulating shell 1, making the structure of the carbon brush holder extremely stable.

[0030] The outer diameter of the conductive member 2 is set to be smaller than the inner diameter of the insulating shell 1, and the conductive member 2 only contacts the inner wall of the insulating shell 1 at the middle of the side wall 2a, so that there is a large gap between the conductive member 2 and the insulating shell 1, and the gap is used to accelerate the heat dissipation of the conductive member 2, so that the generator can work stably.

[0031] It is further explained that the inner hole of the insulating shell 1 is a square that matches the conductive member 2 to increase the area of ​​the gap formed between the insulating shell 1 and the conductive member 2 and further accelerate the heat dissipation of the conductive member 2.

[0032] In this embodiment,

[0033] The convex portion 2c is formed as follows: the inner side of the middle portion of the side wall 2a is concave outward to form the convex portion 2c on the outer side of the middle portion of the side wall 2a, that is, the conductive member 2 is formed into the above-mentioned convex portion 2c by pressing and deforming, which is not only convenient for processing, but also can reduce material input. Preferably, the cross section of the convex portion 2c is in an arc shape to enhance the structural strength of the conductive member 2.

[0034] The shape of the slot 2d is as follows: the cross section of the slot 2d is roughly U-shaped, so as to increase the contact area between the slot 2d and the clamping strip 1a1 and improve the positioning strength of the conductive member 2.

[0035] The structure of the insulating shell 1 is as follows: it includes a plugging cap 1b and a cylindrical body 1a with both ends open, the plugging cap 1b is fixed inside the lower end of the body 1a and closes the lower end of the body 1a, the conductive member 2 is vertically arranged inside the body 1a and pressed on the plugging cap 1b, and the clamping strip 1a1 is arranged on the inner wall of the body 1a. The insulating shell 1 adopts a split structure, which is convenient for processing and assembly.

[0036] in,

[0037] The main body 1a and the clip strip 1a1 are integrally formed by injection molding, which has the advantages of convenient processing and stable structure.

[0038] The plugging cap 1b is screwed into the lower end of the main body 1a, and a strip groove 1b1 is radially opened on the bottom wall of the plugging cap 1b for cooperating with a tool to facilitate the rotation of the plugging cap 1b for disassembly and assembly.

[0039] like Figure 1 and Figure 3 As shown, a straight groove 1c is also provided on the inner wall of the insulating shell 1. The length of the straight groove 1c extends vertically, and the upper end of the straight groove 1c extends to the top surface of the insulating shell 1. There are two straight grooves 1c, which are respectively arranged opposite to the two side walls 2b. The upper ends of the two straight grooves 1c provided on the inner wall of the insulating shell 1 are open and respectively opposite to the two side walls 2b, so that a larger gap is formed between the insulating shell 1 and the two side walls 2b, further accelerating the heat dissipation of the conductive member 2. Preferably, the cross section of the straight groove 1c is roughly U-shaped to increase the size of the straight groove 1c.

[0040] The specific embodiments described herein are merely examples of the spirit of the present invention. Those skilled in the art may make various modifications or additions to the specific embodiments described or replace them in similar ways, but they will not deviate from the spirit of the present invention or exceed the scope defined by the appended claims.

Claims

1. A carbon brush holder for an automobile generator, comprising a barrel-shaped insulating shell (1) and a square barrel-shaped conductive member (2) vertically arranged in the insulating shell (1), wherein the conductive member (2) is surrounded by two side walls (2a) arranged in parallel and two side walls (2b) arranged in parallel, characterized in that: The outer diameter of the conductive part (2) is smaller than the inner diameter of the insulating shell (1), and the central axes of the conductive part (2) and the insulating shell (1) are collinear; a long strip-shaped convex portion (2c) is vertically formed on the middle outer wall of the two side walls (2a), and the two convex portions (2c) are pressed against the inner wall of the insulating shell (1); a clamping groove (2d) is axially penetrated on the two convex portions (2c), and two clamping strips (1a1) matching the clamping groove (2d) are formed on the inner wall of the insulating shell (1), and the two clamping strips (1a1) are respectively clamped in the two clamping grooves (2d).

2. The carbon brush holder for an automobile generator according to claim 1, characterized in that: The inner side of the middle portion of the side wall 1 (2a) is concave outward to form the convex portion (2c) on the outer side of the middle portion of the side wall 1 (2a).

3. The carbon brush holder for an automobile generator according to claim 2, characterized in that: The cross section of the convex portion (2c) is in the shape of an arc.

4. The automobile generator carbon brush holder according to claim 1, 2 or 3, characterized in that: The inner hole of the insulating shell (1) is a square that matches the conductive member (2).

5. The automobile generator carbon brush holder according to claim 1, 2 or 3, characterized in that: The cross section of the card slot (2d) is roughly U-shaped.

6. The carbon brush holder for an automobile generator according to claim 4, characterized in that: A straight groove (1c) is also provided on the inner wall of the insulating shell (1). The length of the straight groove (1c) extends vertically, and the upper end of the straight groove (1c) extends to the top surface of the insulating shell (1). There are two straight grooves (1c) which are respectively arranged opposite to the two side walls (2b).

7. The carbon brush holder for an automobile generator according to claim 6, characterized in that: The cross section of the straight groove (1c) is roughly U-shaped.

8. The carbon brush holder for an automobile generator according to claim 1, characterized in that: The insulating shell (1) comprises a plugging cap (1b) and a main body (1a) which is cylindrical and open at both ends; the plugging cap (1b) is fixed inside the lower end of the main body (1a) and closes the lower end of the main body (1a); the conductive member (2) is vertically arranged inside the main body (1a) and pressed onto the plugging cap (1b); and the clamping strip (1a1) is arranged on the inner wall of the main body (1a).

9. The carbon brush holder for an automobile generator according to claim 8, characterized in that: The main body (1a) and the clip strip (1a1) are integrally formed by injection molding.

10. The automobile generator carbon brush holder according to claim 8 or 9, characterized in that: The plugging cap (1b) is screwed into the lower end of the main body (1a), and a strip groove (1b1) is radially opened on the bottom wall of the plugging cap (1b).

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