CN218958226U

CN218958226U - Carbon brush assembly

Info

Publication number: CN218958226U
Application number: CN202223395684.9U
Authority: CN
Inventors: 赵震州; 陈丽洁; 刘蓓林; 徐建核
Original assignee: Gvei Auto Parts Co ltd
Current assignee: Gvei Auto Parts Co ltd
Priority date: 2022-12-17
Filing date: 2022-12-17
Publication date: 2023-05-02
Anticipated expiration: 2032-12-17

Abstract

The utility model relates to a carbon brush assembly, which comprises a shell, a cover plate and a carbon brush module, wherein the cover plate and the carbon brush module are arranged on the shell, the carbon brush module comprises a brush frame arranged in the shell, a carbon brush arranged in the brush frame, a touch plate arranged in the brush frame and connected with a brush wire of the carbon brush, and a spring arranged between the carbon brush and the touch plate, two V-shaped contact spring pieces are symmetrically arranged on the touch plate, two contact grooves matched with the two contact spring pieces are arranged in the brush frame, the two contact spring pieces are clamped in the two contact grooves, and one end of the brush frame is provided with a wiring part extending outside the shell. The utility model has the advantages of simple structure, stable and reliable performance, convenient assembly and good contact.

Description

Carbon brush assembly

Technical Field

The utility model particularly relates to a carbon brush assembly.

Background

Carbon brushes, also called brushes, are widely used in many electrical devices as a sliding contact. The carbon brush is mainly made of graphite, impregnated graphite and metal (copper and silver containing) graphite in the application materials of the product. The carbon brush is a device for transmitting energy or signals between a fixed part and a rotating part of a motor or a generator or other rotary machinery, is generally made of pure carbon and a coagulant, is generally square in shape, is clamped on a metal bracket, is tightly pressed on a rotating shaft by a spring, and transmits electric energy to a coil through a phase changer when the motor rotates. The contact between the touch plate and the brush frame of the existing carbon brush assembly is unreliable, the touch plate and the brush frame are easy to be broken instantaneously, the connection between the brush frame and the shell is not compact, and the brush frame is easy to loosen, so that the working performance of the carbon brush assembly is unreliable.

Disclosure of Invention

The utility model aims to overcome the defects of the prior art and provides the carbon brush assembly which is simple in structure, stable and reliable in performance, convenient to assemble and good in contact.

In order to achieve the above purpose, the utility model adopts a carbon brush assembly, which comprises a shell, a cover plate arranged on the shell and a carbon brush module, wherein the carbon brush module comprises a brush frame arranged in the shell, a carbon brush arranged in the brush frame, a touch plate arranged in the brush frame and connected with a brush wire of the carbon brush, and a spring arranged between the carbon brush and the touch plate, two V-shaped contact spring pieces are symmetrically arranged on the touch plate, two contact grooves matched with the two contact spring pieces are arranged in the brush frame, the two contact spring pieces are clamped in the two contact grooves, and one end of the brush frame is provided with a wiring part extending outside the shell.

The beneficial effects of the structure are as follows: the contact plate is provided with two contact spring pieces, so that the contact pressure of the contact plate and the brush holder can be increased, the contact between the contact plate and the brush holder is more reliable, the phenomenon of instantaneous disconnection of the contact plate and the brush holder can be avoided, and the brush holder, the carbon brush and the contact plate are assembled in the shell in an integrated and modularized manner, so that the assembly efficiency of the carbon brush assembly is improved. Therefore, the carbon brush assembly has the advantages of simple structure, stable and reliable performance, convenience in assembly and good contact.

Particularly, one side of the outer wall of the brush frame is provided with an anti-falling limiting piece, the shell is internally provided with a limiting groove matched with the anti-falling limiting piece, and the anti-falling limiting piece is clamped in the limiting groove and forms limiting fit of the brush frame and the shell. The anti-falling limiting piece can clamp the brush holder in the shell, and can prevent the brush holder from loosening or falling off.

Particularly, a plurality of bosses are arranged on the other side of the outer wall of the brush frame, the bosses are abutted against the inner wall of the shell, and the brush frame is in limit fit with the shell. The brush frame is provided with a plurality of bosses which are abutted against the inner wall of the shell, so that the brush frame and the shell are more compactly connected, and the brush frame is not easy to loosen.

Particularly, a threaded hole matched with the cover plate is formed in the shell, a stud portion matched with the threaded hole is arranged on the cover plate, and when the stud portion is screwed in the threaded hole, the stud portion abuts against the upper end face of the touch plate. The cover plate and the shell are assembled in a threaded connection mode, so that the assembly or disassembly of the shell and the cover plate is facilitated.

Particularly, an opening straight groove is arranged on the outer wall of the cover plate. The cover plate is provided with an opening straight slot, so that the cover plate and the shell are convenient to assemble or disassemble.

Particularly, the two sides of the brush frame are vertically bent and are provided with two limiting sheets, the limiting sheets are arranged on steps in the shell, and the lower end face of the touch plate is attached to the two limiting sheets. The two limiting sheets of the brush holder are clamped on the steps of the shell, so that the brush holder and the shell are convenient to assemble, and the touch plate is attached to the two limiting sheets of the brush holder, so that the brush holder and the touch plate are ensured to be contacted more reliably.

Particularly, the carbon brush is provided with a boss part matched with the spring, one end of the spring is clamped on the boss part, the touch plate is provided with a positioning boss matched with the spring, and the other end of the spring is clamped on the positioning boss. The spring is clamped between the boss part of the carbon brush and the positioning boss of the touch plate, so that the spring, the carbon brush and the touch plate are convenient to assemble, and the assembly is more convenient.

Drawings

Fig. 1 is a perspective view of an embodiment of the present utility model.

Fig. 2 is a cross-sectional view of an embodiment of the present utility model.

Fig. 3 is an exploded view of an embodiment of the present utility model.

Fig. 4 is a perspective view of a brush holder according to an embodiment of the present utility model.

Detailed Description

As shown in fig. 1 to 4, an embodiment of the present utility model is a carbon brush assembly, which includes a housing 10, a cover plate 11 disposed on the housing 10, and a carbon brush module 20, wherein the carbon brush module 20 includes a brush holder 21 disposed in the housing 10, a carbon brush 22 disposed in the brush holder 21, a contact plate 23 disposed in the brush holder 21 and connected with a brush wire 221 of the carbon brush 22, and a spring 24 disposed between the carbon brush 22 and the contact plate 23, two V-shaped contact spring pieces 231 are symmetrically disposed on the contact plate 23, two contact slots 211 adapted to the two contact spring pieces 231 are disposed in the brush holder 21, the two contact spring pieces 231 are engaged in the two contact slots 211, and one end of the brush holder 21 has a wire connection portion 212 extending outside the housing 10.

As shown in fig. 2 to 4, an anti-falling limiting piece 213 is disposed on one side of the outer wall of the brush holder 21, a limiting groove 101 matched with the anti-falling limiting piece 213 is disposed in the housing 10, and the anti-falling limiting piece 213 is clamped in the limiting groove 101 to form a limiting fit between the brush holder 21 and the housing 10. The anti-falling limiting piece can clamp the brush holder in the shell, and can prevent the brush holder from loosening or falling off. The other side of the outer wall of the brush frame 21 is provided with a plurality of bosses 214, and the bosses 214 are abutted against the inner wall of the housing 10 and form limit fit between the brush frame 21 and the housing 10. The brush frame is provided with a plurality of bosses which are abutted against the inner wall of the shell, so that the brush frame and the shell are more compactly connected, and the brush frame is not easy to loosen. The shell 10 is internally provided with a threaded hole 102 matched with the cover plate 11, the cover plate 11 is provided with a stud part 111 matched with the threaded hole 102, and when the stud part 111 is screwed in the threaded hole 102, the stud part 111 is abutted against the upper end surface of the touch plate 23. The cover plate and the shell are assembled in a threaded connection mode, so that the assembly or disassembly of the shell and the cover plate is facilitated. The outer wall of the cover plate 11 is provided with an opening straight slot 112. The cover plate is provided with an opening straight slot, so that the cover plate and the shell are convenient to assemble or disassemble. The two sides of the brush holder 21 are vertically bent and are provided with two limiting sheets 215, the limiting sheets 215 are arranged on the step 103 in the shell 10, and the lower end face of the touch plate 23 is attached to the two limiting sheets 215. The two limiting sheets of the brush holder are clamped on the steps of the shell, so that the brush holder and the shell are convenient to assemble, and the touch plate is attached to the two limiting sheets of the brush holder, so that the brush holder and the touch plate are ensured to be contacted more reliably. The carbon brush 22 is provided with a boss portion 222 matched with the spring 24, one end of the spring 24 is clamped on the boss portion 222, the touch plate 23 is provided with a positioning boss 232 matched with the spring 24, and the other end of the spring 24 is clamped on the positioning boss 232. The spring is clamped between the boss part of the carbon brush and the positioning boss of the touch plate, so that the spring, the carbon brush and the touch plate are convenient to assemble, and the assembly is more convenient.

The contact plate is provided with two contact spring pieces, so that the contact pressure of the contact plate and the brush holder can be increased, the contact between the contact plate and the brush holder is more reliable, the phenomenon of instantaneous disconnection of the contact plate and the brush holder can be avoided, and the brush holder, the carbon brush and the contact plate are assembled in the shell in an integrated and modularized manner, so that the assembly efficiency of the carbon brush assembly is improved. Therefore, the carbon brush assembly has the advantages of simple structure, stable and reliable performance, convenience in assembly and good contact.

Claims

1. A carbon brush assembly, characterized in that: including shell, apron, carbon brush module of setting on the shell, the carbon brush module including setting up brush yoke in the shell, setting up in the brush yoke, set up in the brush yoke and the contact plate that is connected with the brush line of carbon brush, set up the spring between carbon brush and contact plate, the contact plate on the symmetry be provided with two contact shell fragments that are the V type, the brush yoke in be provided with two contact grooves with two contact shell fragment looks adaptations, two contact shell fragment block in two contact grooves, brush yoke one end have the wiring portion of extension outside the shell.

2. The carbon brush assembly according to claim 1, wherein: the brush holder is characterized in that an anti-falling limiting piece is arranged on one side of the outer wall of the brush holder, a limiting groove matched with the anti-falling limiting piece is formed in the shell, and the anti-falling limiting piece is clamped in the limiting groove and forms limiting fit of the brush holder and the shell.

3. The carbon brush assembly according to claim 1 or 2, characterized in that: the brush holder is characterized in that a plurality of bosses are arranged on the other side of the outer wall of the brush holder, the bosses are abutted against the inner wall of the shell, and the brush holder is in limit fit with the shell.

4. The carbon brush assembly according to claim 1 or 2, characterized in that: the shell in be provided with apron matched with screw hole, the apron on be provided with screw hole matched with double-screw bolt portion, the double-screw bolt portion screw when threaded hole, the double-screw bolt portion conflict at the up end of touch panel.

5. The carbon brush assembly according to claim 4, wherein: the outer wall of the cover plate is provided with an opening straight groove.

6. The carbon brush assembly according to claim 1 or 2, characterized in that: the two sides of the brush frame are vertically bent and are provided with two limiting sheets, the limiting sheets are arranged on steps in the shell, and the lower end face of the touch plate is attached to the two limiting sheets.

7. The carbon brush assembly according to claim 1 or 2, characterized in that: the carbon brush on have with spring matched with boss portion, spring one end block on boss portion, the touch panel on be provided with spring matched with location boss, the other end block of spring on the location boss.