CN201623567U

CN201623567U - Electric brush frame

Info

Publication number: CN201623567U
Application number: CN201020140506XU
Authority: CN
Inventors: 覃韦克; 夏斐; 李贤龙
Original assignee: Shanghai Brose Electric Motors Co Ltd
Current assignee: Shanghai Brose Electric Motors Co Ltd
Priority date: 2010-03-25
Filing date: 2010-03-25
Publication date: 2010-11-03
Anticipated expiration: 2020-03-25

Abstract

The utility model relates to an electric brush frame which comprises a brush hole part which supports the electric brush, wherein one hole wall of the brush hole part has a T-shaped structure, the other one hole wall thereof has two parallel T-shaped structures, the electric brush is supported between the T-shaped structure and the strip-shaped structures, the supporting faces where the T-shaped structure and the strip-shaped structures of the brush hole part supported with the electric brush are provided with a step type lug boss. The electric brush frame can be made from common nylon, can be used for supporting the electric brush, and can prevent the electric brush from being stuck since the plastic burr is melted caused by high temperature when running the electrical machine, thereby being capable of greatly reducing the cost of the electric brush frame and achieving the aim of reducing the noise and the variation of the electrical machine.

Description

Brush carrier

Technical field

The utility model relates to brush carrier, refers to a kind of brush carrier of avoiding the fusing of brush holder burrs on edges to block brush especially.

Background technology

The effect of brush carrier is to make and the brush of commutator or collector ring surface sliding contact conduction current stably between fixed body and rotary body; The structure of brush holder is to keep the brush bore portion of brush on assigned position, pushes down brush to prevent the pressures partially of brush chattering with suitable pressure, and connection is brushed the frame part of hole and pressures partially and the standing part that brush carrier is fixed on the motor is formed.

The production mould of existing brush carrier is the piecemeal mould, brush carrier is when depanning, because of mould is not an integral structure, so as shown in Figure 6, brush bore portion incision position 30 is the die parting line position, inevitably can produce overlap (burr) in this position, during motor rotation, this burr is at high temperature dissolved probably and makes motor produce noise and vibration, even with brushes stuck, thereby cause motor not change; Some manufacturer blocks brush and uses special material for fear of the burr fusing, has then strengthened cost.

Summary of the invention

Main purpose of the present utility model is: a kind of brush carrier of avoiding the burr fusing to block brush is provided.

For achieving the above object, the utility model provides a kind of brush carrier, include the brush bore portion that supports brush, described brush bore portion one hole wall is a T type structure, another hole wall is two parallel strip structures, brush is resisted against between T type structure and the strip structure, and the T type structure of described brush bore portion and the abutment face of strip structure and brush are provided with the step boss;

Described step boss thickness 0.1mm, step boss Edge Distance T type structure and strip structure edge 0.1mm.

The utility model can use common nylon plastic(s) to be made into brush carrier and support brush, and can not allow motor be blocked because of high temperature melting by plastic flash at the running center brush, thereby need not use special material to make brush carrier, the cost of brush carrier can be reduced greatly, and the purpose that reduces noise of motor and vibration can be reached.

Description of drawings

Fig. 1 is a schematic perspective view of the present utility model;

Fig. 2 is the T type structural representation of brush bore portion of the present utility model;

Fig. 3 is the strip structure schematic diagram of brush bore portion of the present utility model;

Fig. 4 is the structural representation of step boss of the present utility model;

Fig. 5 is the use schematic diagram of step boss of the present utility model; And

Fig. 6 is the brush pore structure schematic diagram of existing brush carrier.

Embodiment

As shown in Figure 1, brush carrier 10 of the present utility model, include the brush bore portion 11 that supports brush 20, in conjunction with shown in Figure 2, described brush bore portion 11 1 hole walls are T type structure 12, and in conjunction with shown in Figure 3, another hole wall relative with T type structure 12 hole walls is two parallel strip structures 13, brush 20 is to be resisted against between T type structure 12 and the strip structure 13 when being assembled in the brush bore portion 11, and the T type structure 12 of described brush bore portion 11 and strip structure 13 are provided with step boss 14 with the abutment face of brush 20; As shown in Figure 4, the limit 141 long 0.1mm of described step boss 14, i.e. step boss 14 thickness 0.1mm, part 142,143 length at step boss 14 Edge Distance T type structures 12 and strip structure 13 edges are 0.1mm.

As shown in Figure 5, during brush carrier 10 depannings, the T type structure 12 of its brush bore portion 11 and the incision position of strip structure 13 15 produce burr, because brush 20 is to be resisted against on the step boss 14, can not touch the burr of incision position 15 during brush 20 operations, so can not allow motor be blocked by burr because of high temperature melting at running center brush 20; Thus, can use common nylon plastic(s) to be made into brush carrier 10 of the present utility model, can reduce the cost of brush carrier greatly thus, and can reach the purpose that reduces noise of motor and vibration.

Claims

1. brush carrier, include the brush bore portion that supports brush, it is characterized in that, described brush bore portion one hole wall is a T type structure, another hole wall relative with T type structure 12 hole walls is two parallel strip structures, brush is resisted against between T type structure and the strip structure, and the T type structure of described brush bore portion and the abutment face of strip structure and brush are provided with the step boss.

2. brush carrier according to claim 1 is characterized in that, described step boss thickness 0.1mm.

3. brush carrier according to claim 1 and 2 is characterized in that, described step boss Edge Distance T type structure and strip structure edge 0.1mm.