CN201252327Y

CN201252327Y - Electric brush structure

Info

Publication number: CN201252327Y
Application number: CNU2008202105328U
Authority: CN
Inventors: 童小春
Original assignee: LIYANG HONGDA MOTORS CO Ltd
Current assignee: LIYANG HONGDA MOTORS CO Ltd
Priority date: 2008-08-31
Filing date: 2008-08-31
Publication date: 2009-06-03
Anticipated expiration: 2018-08-31

Abstract

The utility model discloses an electric brush structure which consists of a brush body, a lead wire, a spring, a post head and a brush cap; wherein, the brush body is arranged in brush holes on a motor end hood, the brush hole which is arranged on the motor end hood in front of one end of the brush body is contacted with a reversing apparatus, and the brush hole arranged on motor end hood at the other end of the brush body is connected with one end of the spring in an elastic way; the other end of the spring is connected with the post head in an elastic way; after being extracted by the brush body, the lead wire passes through the spring and is led out after being fixed by the post head; the post head is plugged in the brush hole on the motor end hood by a brush cap which is fixed on the motor end hood; after the lead wire is led out by being fixed by the post head and then penetrates outside the brush cap, a power cord is directly connected with the lead wire; by adopting the technical proposal, a brush holder of the electric brush is left out on the structure, so that the connection between the brush holder and the lead wire is reduced, the consumption of contact resistance is decreased, and the generation of electric spark can be reduced in the using process of the electric brush.

Description

The brush structure

Technical field

The utility model relates to a kind of brush of disc type DC servo motor, belongs to dynamo-electric field.

Background technology

At present, the brush structure of the high-power disc type direct current machine of public use all is that the brush body lead-in wire links to each other with brush carrier, brush carrier is drawn lead and is connected with the power line of outside more then, this brush structure, brush work the time occur easily between brush body lead-in wire and brush carrier or brush carrier and the power line contact bad, cause the generation of electric spark, especially under the big current conditions of Fraquent start, big contact resistance loss can occur.

Summary of the invention

The purpose of this utility model provides a kind of novel brush at the defective of above-mentioned existence, and it both can reduce the brush generation of electric spark in use, can reduce the contact resistance loss again.

The technical solution of the utility model is: a kind of brush structure, and it is made up of brush body, lead-in wire, spring, binding post, brush cap; Described brush body is arranged in the brush hole on the electric motor end cap, the brush hole that goes out on the electric motor end cap before brush body one end contacts with commutator, join with an end elasticity of spring in the brush hole of the brush body other end on electric motor end cap, the other end of spring and described binding post elasticity are joined, and pass spring after described lead-in wire is drawn by brush body and draw after binding post is fixing; Binding post is by in the brush brush hole of cap shutoff on electric motor end cap, and the brush cap is fixed on the electric motor end cap, passes after described lead-in wire fixedly is drawn by binding post that direct and power line joins behind the brush cap.

The beneficial effects of the utility model are: draw after binding post is fixing and pass this technical scheme that directly is connected with power supply behind the brush cap again owing to pass spring after having adopted lead-in wire to be drawn by brush body, brush has structurally saved these parts of brush carrier, so just reduced being connected of brush carrier and lead-in wire, reduce the contact resistance loss, also reduced the brush generation of electric spark in use simultaneously.

Description of drawings

Below in conjunction with drawings and Examples the utility model is further specified.

Fig. 1 is a structural representation of the present utility model;

Fig. 2 is the sectional structure schematic diagram of a pair of brush in electric motor end cap.

Among the figure: 1. brush body; 2. go between; 3. spring; 4. binding post; 5. brush cap.

Embodiment

As shown in Fig. 1, Fig. 2, a kind of brush structure, it is made up of brush body 1, lead-in wire 2, spring 3, binding post 4, brush cap 5; Described brush body 1 is arranged in the brush hole on the electric motor end cap, the brush hole that goes out on the electric motor end cap before brush body 1 one ends contacts with commutator, join with spring 3 one end elasticity in the brush hole of the other end of brush body 1 on electric motor end cap, join with described binding post 4 elasticity in the brush hole of the other end of spring 3 on electric motor end cap, described lead-in wire 2 is drawn by brush body 1 after spring 3 is drawn after being fixed by binding post 4; Binding post 4 is by in the brush hole of brush cap 5 shutoff on electric motor end cap, brush cap 5 is fixed on the electric motor end cap, like this, by brushing cap 5 in the brush hole of binding post 4 shutoff on electric motor end cap, the thrust that spring 3 is produced contact brush body 1 closely with commutator, after described lead-in wire 2 is fixedly drawn by binding post 4 again after brushing cap 5 and drawing direct and power line join.

Claims

1, a kind of brush structure, it is by brush body (1), lead-in wire (2), spring (3), binding post (4), brush cap (5) is formed, it is characterized in that: described brush body (1) is arranged in the brush hole on the electric motor end cap, the brush hole that goes out on the electric motor end cap before brush body (1) one end contacts with commutator, join with spring (3) one end elasticity in the brush hole of the other end of brush body (1) on electric motor end cap, join with described binding post (4) elasticity in the brush hole of the other end of spring (3) on electric motor end cap, described lead-in wire (2) is drawn by brush body (1) after spring (3) is drawn after being fixed by binding post (4), binding post (4) is by in the brush hole of brush cap (5) shutoff on electric motor end cap, brush cap (5) is fixed on the electric motor end cap, after described lead-in wire (2) fixedly is drawn by binding post (4) again after brush cap (5) is drawn direct and power line join.