CN215378634U

CN215378634U - Six brush holders

Info

Publication number: CN215378634U
Application number: CN202120856260.4U
Authority: CN
Inventors: 朱健
Original assignee: Suzhou Doneka New Materials Corp ltd
Current assignee: Suzhou Doneka New Materials Corp ltd
Priority date: 2021-04-25
Filing date: 2021-04-25
Publication date: 2021-12-31
Anticipated expiration: 2031-04-25

Abstract

The utility model discloses a six-brush type electric brush holder, which comprises: three positive pole brush boxes, three negative pole brush boxes and a brush box fixing plate; the positive brush box and the negative brush box are fixedly arranged on the brush box fixing plate, and the integrated insulating base plate is arranged between the brush box fixing plate and the positive brush box and between the brush box fixing plate and the negative brush box; the positive brush box and the negative brush box are arranged in a pairwise opposite mode. The utility model effectively improves the power of the electric brush and prolongs the service life of the electric brush, and avoids the conduction of the positive electrode and the negative electrode caused by the falling of the carbon powder.

Description

Six brush holders

Technical Field

The utility model relates to the technical field of brush holders of starting motors of automotive engines, in particular to a six-brush type brush holder.

Background

The application of the automobile starting motor brush holder in an automobile engine is long, at present, the engine starting motor brush holders of trucks or other industrial vehicles all adopt the traditional four-brush holder with the positive electrode riveted with the positive electrode and the negative electrode riveted with the negative electrode, along with the rapid development of the automobile industry, the requirements on the performance indexes of the power, the service life and the anti-attenuation capability of the automobile engine starting motor brush are higher and higher, and the use requirements of the current automobile industry cannot be met because the power and the service life of the carbon brush of the traditional four-brush holder are limited under the same conditions; at present, six brush holders assembled by adopting plastic brush boxes are also available, but the six brush holders can only be arranged on a passenger car due to low power.

In addition, the four brush yoke that is applied to truck or other industrial vehicles at present adopts split type insulating backing plate, corresponds installation insulating backing plate in the bottom of anodal brush box promptly, and negative pole brush box direct mount makes partial brush box fixed plate expose on the brush box fixed plate, and this kind of split type insulating backing plate has following defect: 1. once carbon powder of the positive carbon brush falls off in the using process, the carbon powder can easily fall off the exposed brush box fixing plate, so that the conduction of the positive electrode and the negative electrode is caused; 2. the positive brush box and the negative brush box have assembly height difference.

Disclosure of Invention

The utility model aims to overcome the problems in the prior art, and provides a six-brush type electric brush holder, which effectively improves the electric brush power and prolongs the service life, and avoids the conduction of positive and negative electrodes caused by the falling of carbon powder.

In order to achieve the above object of the present invention, the following technical solutions are provided:

a six-brush holder comprising: three positive pole brush boxes, three negative pole brush boxes and a brush box fixing plate; the positive brush box and the negative brush box are fixedly arranged on the brush box fixing plate, and the integrated insulating base plate is arranged between the brush box fixing plate and the positive brush box and between the brush box fixing plate and the negative brush box; the positive brush box and the negative brush box are arranged in a pairwise opposite mode.

Preferably, the positive pole brush box is assembled on the brush box fixing plate by using a positive pole rivet; an outer insulating pad is arranged between the rivet head of the positive rivet and the brush box fixing plate; and an inner insulating pad is arranged between the rivet rod part of the positive rivet and the brush box fixing plate.

Preferably, the negative brush box is assembled on the brush box fixing plate by using a negative rivet.

Preferably, the inner insulating pad is located in a riveting hole of the brush box fixing plate.

Preferably, the positive brush box, the negative brush box and the brush box fixing plate are made of metal materials.

The beneficial effects of the utility model are embodied in the following aspects:

1) compared with a four-brush frame, the four-brush frame is additionally provided with one group of carbon brushes, so that the current density is reduced, the abrasion of the electric brushes is reduced, the spark is reduced, and the service life can be prolonged;

2) according to the utility model, the voltage drop can be reduced by adding the group of parallel carbon brushes, so that the output power is improved;

3) the utility model adopts the integrated insulating base plate, can ensure that the positive brush box and the negative brush box are assembled at the same height, and can completely avoid the conduction of the positive and the negative electrodes caused by the carbon powder of the positive carbon brush falling to the brush box fixing plate in the using process.

Drawings

FIG. 1 is a schematic structural view of a six-brush holder according to the present invention;

FIG. 2 is a schematic diagram of the staking of the positive brush box of the six-brush carrier of the present invention;

fig. 3 is a schematic view of the riveting of the negative brush box of the six-brush holder of the present invention.

Description of reference numerals: 11-positive electrode brush box; 12-negative brush box; 2-insulating backing plate; 3-brush box fixing plate; 4-negative pole rivet; 5-inner insulating pad; 6-external insulating pad; 7-positive pole rivet.

Detailed Description

The utility model is suitable for the automobile starting motor. The present invention will be described in detail below with reference to the accompanying drawings and examples.

As shown in fig. 1 to 3, the present embodiment provides a six-brush type brush holder, including: three positive electrode brush boxes 11 for mounting three positive electrode carbon brushes, respectively; three negative electrode brush boxes 12 for mounting three negative electrode carbon brushes, respectively; a brush box fixing plate 3 for fixedly mounting a positive brush box 11 and a negative brush box 12; wherein, an integrated insulating pad 2 is arranged between the brush box fixing plate 3 and the positive brush box 11 and the negative brush box 12.

The integrated insulating base plate 2 can ensure that the positive brush box 11 and the negative brush box 12 are assembled at the same height, and can completely avoid the conduction of the positive and negative electrodes caused by the fact that carbon powder of the positive carbon brush falls to the brush box fixing plate in the using process.

As shown in fig. 1, the positive electrode brush box 11 and the negative electrode brush box 12 of the present embodiment are installed to face each other two by two. The positive carbon brushes and the negative carbon brushes respectively arranged in the pair of positive brush boxes 11 and the negative brush boxes 12 form a group of carbon brushes, and the three groups of carbon brushes are connected in parallel. Compared with a four-brush frame, the six-brush electric brush frame is additionally provided with one group of carbon brushes, so that the current density is reduced, the abrasion of the electric brushes is reduced, the sparks are reduced, and the service life can be prolonged; and a group of parallel carbon brushes is added, so that the voltage drop is reduced, and the output power is improved.

The positive brush box 11, the negative brush box 12 and the brush box fixing plate 3 are made of metal materials, so that the body is firmer.

As shown in fig. 1 and 2, the positive electrode brush box 11 is assembled on the brush box fixing plate 3 by the positive electrode rivet 7. An outer insulating pad 6 is arranged between the rivet head of the positive rivet 7 and the brush box fixing plate 3; an inner insulating pad 5 is arranged between the rivet rod part of the positive rivet 7 and the brush box fixing plate 3. During specific assembly, the outer diameter of the outer insulating pad 6 is larger than that of the inner insulating pad 5, and the inner insulating pad 5 is positioned in a riveting hole of the brush box fixing plate 3.

As shown in fig. 1 and 3, the negative brush box 12 is fitted on the brush box fixing plate 3 with the negative rivet 4.

The assembly process of the six-brush holder of the embodiment is as follows:

as shown in fig. 2, the outer insulating pad 6 and the inner insulating pad 5 are sequentially inserted into the positive rivet 7, the rod of the positive rivet 7 is sequentially inserted into the riveting holes of the brush box fixing plate 3 and the insulating pad plate 2, the inner insulating pad 5 is inserted into the riveting hole of the brush box fixing plate 3, and finally the rod of the positive rivet 7 is inserted into the riveting hole of the positive brush box 11 to rivet the positive part. As shown in fig. 3, the negative rivet 4 is passed through the rivet holes of the brush box fixing plate 3, the insulating pad 2 and the negative brush box 12 in this order to rivet the negative portion.

Although the present invention has been described in detail, the present invention is not limited thereto, and those skilled in the art can modify the principle of the present invention, and thus, various modifications made in accordance with the principle of the present invention should be understood to fall within the scope of the present invention.

Claims

1. A six-brush holder comprising: three positive pole brush boxes, three negative pole brush boxes and a brush box fixing plate; the positive brush box and the negative brush box are fixedly arranged on the brush box fixing plate, and the integrated insulating base plate is arranged between the brush box fixing plate and the positive brush box and between the brush box fixing plate and the negative brush box;

the positive brush box and the negative brush box are arranged in a pairwise opposite mode.

2. The six-brush holder according to claim 1, wherein the positive brush box is mounted on the brush box fixing plate by means of a positive rivet;

an outer insulating pad is arranged between the rivet head of the positive rivet and the brush box fixing plate;

and an inner insulating pad is arranged between the rivet rod part of the positive rivet and the brush box fixing plate.

3. The six-brush holder according to claim 2, wherein the negative brush box is mounted on the brush box fixing plate by a negative rivet.

4. A six-brush holder according to claim 3, in which the inner insulating pad is located in a riveting hole of the brush box fixing plate.

5. The six-brush holder according to claim 1 or 4, wherein the positive brush box, the negative brush box and the brush box fixing plate are made of a metal material.