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Brush holder

A technology of brush holders and brushes, which is applied in the direction of electrical components, electromechanical devices, electric components, etc., can solve problems such as noise and vibration, motor non-rotation, and increase costs, and achieve the effect of reducing costs, reducing noise and vibration

Active Publication Date: 2012-06-20
SHANGHAI BROSE ELECTRIC MOTORS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The production mold of the existing brush holder is a block mold. When the brush holder is out of the mold, because the mold is not an integrated structure, so if Image 6 As shown, the fracture part 30 of the brush hole is the parting line position, and burrs (burrs) will inevitably be generated at this position. When the motor is running, the burrs are likely to be melted at high temperature and cause noise and vibration of the motor. Even the brushes are stuck, resulting in the motor not turning; some manufacturers use special materials to avoid the burr melting and jamming the brushes, which increases the cost

Method used

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Embodiment Construction

[0014] Such as figure 1 As shown, the brush holder 10 of the present invention includes a brush hole portion 11 supporting the brush 20, combined with figure 2 As shown, a hole wall of the brush hole part 11 is a T-shaped structure 12, combined with image 3 As shown, the other hole wall opposite to the hole wall of the T-shaped structure 12 is two parallel strip structures 13. Between the T-shaped structure 12 and the bar-shaped structure 13 of the brush hole part 11 and the contact surface of the brush 20, a stepped boss 14 is provided; Figure 4 As shown, the side 141 of the stepped boss 14 is 0.1 mm long, that is, the thickness of the stepped boss 14 is 0.1 mm, and the edge of the stepped boss 14 is from the edge of the T-shaped structure 12 and the length of the part 143 of the strip structure 13. Both are 0.1mm.

[0015] Such as Figure 5 As shown, when the brush holder 10 is ejected from the mold, the T-shaped structure 12 of the brush hole 11 and the fracture 15 ...

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PUM

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Abstract

The invention relates to a brush holder which comprises a brush hole part for supporting a brush; one hole wall of the brush hole part is a T-shaped structure and the other hole wall comprises two parallel strip-shaped structures; the brush is butted among the T-shaped structure and the strip-shaped structures; and the butting surface between the T-shaped structure and the strip-shaped structuresof the brush hole part and the brush is provided with stepped bosses. The invention can use ordinary nylon plastics for making the brush holder and supporting the brush while preventing the brush from being clamped by plastic burr due to high-temperature melting in the operating process of a motor; therefore, the invention largely reduces the cost of the brush holder and achieves the purpose of reducing noise and vibration of the motor.

Description

technical field [0001] The invention relates to a brush holder, in particular to a brush holder which can prevent the burrs on the edge of the brush holder from melting and jamming the brush. Background technique [0002] The function of the brush holder is to make the brush in sliding contact with the surface of the commutator or the collector ring conduct current stably between the fixed body and the rotating body; the structure of the brush holder is the brush hole part that keeps the brush at the specified position , Press the brush with proper pressure to prevent the brush from vibrating, the frame part that connects the brush hole and the pressurized part, and the fixed part that fixes the brush holder to the motor. [0003] The production mold of the existing brush holder is a block mold. When the brush holder is out of the mold, because the mold is not an integrated structure, so if Figure 6 As shown, the fracture part 30 of the brush hole is the parting line positi...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H02K5/14
Inventor 覃韦克夏斐李贤龙
Owner SHANGHAI BROSE ELECTRIC MOTORS