CN214506820U

CN214506820U - Carbon brush mechanism of motor

Info

Publication number: CN214506820U
Application number: CN202023349621.0U
Authority: CN
Inventors: 赵伟; 刘竹盛
Original assignee: DONGGUAN GUOLIANG MOTOR CO Ltd
Current assignee: DONGGUAN GUOLIANG MOTOR CO Ltd
Priority date: 2020-12-31
Filing date: 2020-12-31
Publication date: 2021-10-26
Anticipated expiration: 2030-12-31

Abstract

The utility model discloses a carbon brush mechanism of a motor, which comprises a carbon brush frame, a carbon brush and an elastic element, wherein the carbon brush frame is provided with a containing hole, the carbon brush is contained in the containing hole in a sliding way, and the elastic element is arranged at one end of the carbon brush to push the carbon brush to extend out of the containing hole; the side face of one end, close to the elastic element, of the carbon brush is provided with an abutting portion, and a blocking portion capable of abutting against the abutting portion is arranged in the containing hole to prevent the carbon brush from completely sliding out of the containing hole. The utility model discloses the carbon brush mechanism of motor has simple structure to can prevent that the elastic element from contacting the commutator after the carbon brush wearing and tearing, improve the advantage of motor security.

Description

Carbon brush mechanism of motor

Technical Field

The utility model relates to a carbon brush mechanism of motor especially relates to a simple structure, can prevent the carbon brush mechanism of the motor of elastic element contact commutator after the carbon brush wearing and tearing have been accomplished.

Background

The carbon brush structure used by the existing motor generally comprises a carbon brush, a carbon brush frame and a spring, wherein the carbon brush is arranged in the carbon brush, and the spring pushes the carbon brush. In addition, in order to prevent the spring from contacting the commutator after the carbon brush is worn out and prevent the spring from damaging the commutator, a baffle gasket is arranged between the carbon brush and the spring in the traditional carbon brush mechanism. The spring is abutted against the baffle gasket, and the baffle gasket pushes the carbon brush to be in sliding contact with the commutator of the motor. When the carbon brush is worn, the baffle plate gasket can separate the spring from the commutator, so that the commutator is protected. However, the use of the baffle washers is also very disadvantageous, not only in that the motor structure becomes complicated, but also in that the motor assembly becomes more cumbersome and disadvantageous to produce.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a simple structure to can prevent that the carbon brush mechanism of the motor of elastic element contact commutator after the carbon brush wearing and tearing.

In order to achieve the above object, the present invention provides a carbon brush mechanism of a motor, which includes a carbon brush holder, a carbon brush and an elastic element, wherein the carbon brush holder is provided with a receiving hole, the carbon brush is slidably received in the receiving hole, and the elastic element is disposed at one end of the carbon brush to push the carbon brush to extend out of the receiving hole; the side face of one end, close to the elastic element, of the carbon brush is provided with an abutting portion, and a blocking portion capable of abutting against the abutting portion is arranged in the containing hole to prevent the carbon brush from completely sliding out of the containing hole.

Compared with the prior art, the carbon brush has the advantages that the abutting part is arranged on the side face of the upper end of the carbon brush, the blocking part is arranged in the containing hole, the abutting part is abutted by the blocking part, so that the carbon brush can be prevented from being excessively pushed out by the elastic element, the carbon brush is prevented from being completely worn off by the commutator, the elastic element can be prevented from contacting the commutator of the motor, and the purpose of protecting the commutator is achieved; in addition, compared with the traditional carbon brush, the carbon brush can omit a baffle gasket, has simple structure and can simplify the structure of the motor.

Preferably, the side wall of the accommodating hole is provided with a sliding groove along the extension direction of the central shaft of the accommodating hole, and the abutting part is accommodated in the sliding groove in a sliding manner.

Preferably, the elastic element is a compression spring, and one end of the compression spring abuts against the upper end of the carbon brush.

Drawings

Fig. 1 is a schematic structural diagram of a carbon brush mechanism of the motor of the present invention.

Detailed Description

In order to explain technical contents, structural features, and effects achieved by the present invention in detail, the following description is given in conjunction with the embodiments and the accompanying drawings.

As shown in fig. 1, a carbon brush mechanism 100 of a motor of the present invention includes a carbon brush holder 1, a carbon brush 2 and an elastic element 3, wherein the carbon brush holder 1 is provided with a containing hole 11, the carbon brush 2 is slidingly contained in the containing hole 11, and the elastic element 3 is disposed at one end of the carbon brush 2 to push the carbon brush 2 to extend out of the containing hole 11; the elastic element 3 is a compression spring, one end of the elastic element 3 abuts against the inner wall of the shell of the motor, and the other end abuts against the upper end of the carbon brush 2; the upper end of the carbon brush 2 is provided with a cylindrical part 2a, and the lower end of the elastic element 3 is sleeved outside the cylindrical part 2a for positioning. Two opposite side surfaces of one end of the carbon brush 2 close to the elastic element 3 are respectively provided with an abutting part 21, and the lower end inside the containing hole 11 is provided with a blocking part 12 which can abut against the abutting part 21 so as to prevent the carbon brush 2 from completely sliding out of the containing hole 11. Specifically, the side wall of the accommodating hole 11 is provided with two opposite sliding grooves 13 along the extending direction of the central axis of the accommodating hole 11, and the abutting portion 21 is slidably accommodated in the sliding grooves 13. When the brush holder is used, the carbon brush 2 is in sliding contact with the commutator 201 of the motor and gradually abraded, under the elastic force action of the elastic element 3, the carbon brush 2 continuously extends out of the accommodating hole 11, and the abutting part 21 slowly approaches to the blocking part 12. When the abutting portion 21 abuts against the blocking portion 12, the carbon brush 2 cannot continuously extend out of the accommodating hole 11; thereby preventing the carbon brush 2 from being completely worn out and allowing the elastic member 3 to still contact the remainder of the carbon brush 2.

Compared with the prior art, because the utility model discloses a be equipped with top 21 in the upper end side of carbon brush 2, be equipped with barrier 12 in holding hole 11, through barrier 12 support against top 21, can prevent that the carbon brush 2 from being pushed out excessively by elastic component 3, thereby avoid the carbon brush 2 to be worn off completely by the commutator, consequently, can prevent elastic component 3 from contacting the commutator of motor, play the purpose of protection commutator; in addition, compared with the conventional carbon brush 2, the baffle washer can be omitted, the structure is simple, and the structure of the motor can be simplified.

Other structures of the motor related to the carbon brush mechanism 100 of the present invention are well known to those skilled in the art, and will not be described in detail herein.

The above disclosure is only a preferred embodiment of the present invention, and certainly, the scope of the present invention should not be limited thereto, and therefore, the scope of the present invention is not limited to the above embodiments.

Claims

1. A carbon brush mechanism of motor which characterized in that: the carbon brush holder is provided with an accommodating hole, the carbon brush is accommodated in the accommodating hole in a sliding manner, and the elastic element is arranged at one end of the carbon brush so as to push the carbon brush to extend out of the accommodating hole; the side face of one end, close to the elastic element, of the carbon brush is provided with an abutting portion, and a blocking portion capable of abutting against the abutting portion is arranged in the containing hole to prevent the carbon brush from completely sliding out of the containing hole.

2. The carbon brush mechanism of a motor according to claim 1, wherein: the side wall of the containing hole is provided with a sliding groove along the extension direction of the central shaft of the containing hole, and the abutting part is contained in the sliding groove in a sliding manner.

3. The carbon brush mechanism of a motor according to claim 1, wherein: the elastic element is a compression spring, and one end of the compression spring abuts against the upper end of the carbon brush.