CN220190567U

CN220190567U - DC brush motor

Info

Publication number: CN220190567U
Application number: CN202321469062.8U
Authority: CN
Inventors: 饶志辉; 郑朝权; 欧鹏; 韦强立
Original assignee: Dongguan Meng Generator Co ltd
Current assignee: Dongguan Meng Generator Co ltd
Priority date: 2023-06-09
Filing date: 2023-06-09
Publication date: 2023-12-15
Anticipated expiration: 2033-06-09

Abstract

The utility model discloses a direct current brush motor, which comprises a shell, a front cover, a rear cover, a main shaft and a commutator, wherein the inner side of the rear cover is provided with a PCB (printed circuit board), the PCB is provided with a through hole, and the main shaft passes through the through hole; the inner side of the rear cover is provided with a plurality of clamping blocks, and the PCB is propped against each clamping block; at least two bolts are arranged between the front cover and the rear cover, and each bolt respectively penetrates through the inner side of the shell. The technical scheme provided by the utility model ensures that the assembly structure of the PCB is very compact, and the enclosed space between the rear cover and the shell is fully utilized.

Description

DC brush motor

Technical Field

The utility model relates to the technical field of motors, in particular to a direct current brush motor.

Background

The direct current motor in the prior art generally has the problems of inconvenient installation of a PCB (namely, a printed circuit board), unstable installation and the like. For example, in the common technical scheme of the chinese patent with the publication number CN 205566786U and the names "motor PCB and dc brushless motor", the motor PCB is installed in the cavity enclosed by the end cover and the casing through the installation shaft. For relatively small size motors, however, the end caps and the housing cannot enclose a sufficiently large space at all. Therefore, a new technical solution is necessary to be provided, so that the installation of the PCB board is more compact and stable.

Disclosure of Invention

In view of the above-mentioned shortcomings of the prior art, the present utility model aims to provide a dc brush motor, which aims to solve the technical problem that the PCB connection of the dc brush motor in the prior art is not compact and stable enough.

In order to achieve the above purpose, the utility model adopts the following technical scheme:

a direct current brush motor comprises a shell, a front cover, a rear cover, a main shaft and a commutator, wherein a PCB (printed circuit board) is arranged on the inner side of the rear cover, a through hole is formed in the PCB, and the main shaft penetrates through the through hole; the inner side of the rear cover is provided with a plurality of clamping blocks, and the PCB is propped against each clamping block; at least two bolts are arranged between the front cover and the rear cover, and each bolt respectively penetrates through the inner side of the shell.

Further, in the direct current brush motor, each clamping block is provided with a limiting block.

Further, in the direct current brush motor, each clamping block is a rubber block.

Further, in the direct current brush motor, the diameter of the through hole is larger than that of the commutator.

Further, in the direct current brush motor, the outer side of each bolt is provided with a limiting plate respectively, and each limiting plate is an arc-shaped plate.

The beneficial effects are that: compared with the prior art, the direct current brush motor provided by the utility model has the advantages that the PCB is arranged on the clamping blocks by arranging the plurality of clamping blocks on the inner side of the rear cover, and the main shaft of the motor passes through the through holes formed in the PCB, so that the assembly structure of the PCB is very compact, and the enclosed space between the rear cover and the machine shell is fully utilized. In addition, be provided with two piece at least bolts between protecgulum and the back lid, can conveniently connect protecgulum, casing, PCB board and back lid, improved assembly efficiency.

Drawings

Fig. 1 is a perspective view of a dc brush motor according to the present utility model.

Fig. 2 is a perspective view of the dc brush motor according to the present utility model, and the casing is not shown.

Fig. 3 is a partial enlarged view of the region S in fig. 2.

Detailed Description

The utility model provides a direct current brush motor, which is further described in detail below for the purpose, technical scheme and effect of the utility model to be clearer and more definite. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the scope of the utility model.

Referring to fig. 1 to 3, the present utility model provides a dc brush motor. It should be noted that, for conventional components (rotor, stator, carbon brush, etc.) of the motor, the present utility model is not particularly described herein because it is not the point of the present utility model.

A direct current brush motor comprises a shell 1, a front cover 2, a rear cover 3, a main shaft 4 and a commutator 9, wherein the inner side of the rear cover is provided with a PCB 6, the PCB is provided with a through hole 600, and the main shaft passes through the through hole; the inner side of the rear cover is provided with a plurality of clamping blocks 5, and the PCB is propped against each clamping block. Through setting up each fixture block, be convenient for assemble the PCB board. At least two bolts 7 are arranged between the front cover and the rear cover, and each bolt passes through the inner side of the casing respectively.

Further, each fixture block is provided with a limiting block 59, and through the limiting block, the PCB can be prevented from moving circumferentially.

It can be observed from the attached drawings that the position of the PCB corresponding to each clamping block is respectively provided with a convex block 61, and the convex blocks are used for propping against the corresponding clamping blocks and limiting blocks, so that the installation of the PCB is simple and quick.

Preferably, each clamping block is a rubber block. The rubber block can play a sealing role, in addition, the buffer role is played in the process of fastening the bolts, and the PCB is prevented from being crushed due to overlarge stress.

Preferably, the diameter of the through-hole is larger than the diameter of the commutator, i.e. the through-hole is large enough not to interfere with the commutator.

Preferably, a limiting plate 79 is arranged on the outer side of each bolt, and each limiting plate is an arc-shaped plate. Can play limiting displacement to the bolt through setting up the limiting plate, avoid the bolt to take place to rock, further improve the stability of connection.

When the motor is actually assembled, the PCB is placed on each clamping block, the motor main shaft passes through the through hole of the PCB, the rear end of the shell (namely, the end of the shell corresponding to the rear cover) is abutted against each lug of the PCB, and each bolt is screwed. The PCB is clamped and cannot move.

According to the analysis, compared with the prior art, in the direct-current brush motor provided by the utility model, the PCB is arranged on the clamping blocks by arranging the plurality of clamping blocks on the inner side of the rear cover, and the main shaft of the motor passes through the through holes formed in the PCB, so that the assembly structure of the PCB is very compact, and the enclosed space between the rear cover and the machine shell is fully utilized. In addition, be provided with two piece at least bolts between protecgulum and the back lid, can conveniently connect protecgulum, casing, PCB board and back lid, improved assembly efficiency.

It will be understood that equivalents and modifications will occur to those skilled in the art based on the present utility model and its spirit, and all such modifications and substitutions are intended to be included within the scope of the present utility model.

Claims

1. The direct current brush motor comprises a shell, a front cover, a rear cover, a main shaft and a commutator, and is characterized in that a PCB is arranged on the inner side of the rear cover, a through hole is formed in the PCB, and the main shaft penetrates through the through hole; the inner side of the rear cover is provided with a plurality of clamping blocks, and the PCB is propped against each clamping block; at least two bolts are arranged between the front cover and the rear cover, and each bolt respectively penetrates through the inner side of the shell.

2. The direct current brush motor of claim 1, wherein each of the plurality of clips is provided with a stop block.

3. The direct current brush motor of claim 2, wherein each of the plurality of clips is a rubber block.

4. The direct current brushed motor of claim 1, wherein the diameter of the through hole is greater than the diameter of the commutator.

5. The direct current brush motor of claim 1, wherein a limiting plate is disposed on the outer side of each bolt, and each limiting plate is an arc-shaped plate.