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Brush holder fixing plate and brush motor with same

A brushed motor and fixed plate technology, which is applied in the direction of electrical components, electromechanical devices, electric components, etc., can solve the problems of affecting motor noise, EMC and other performance, small fastening force of brush holder, long cantilever and other dimensional instability. Improve the performance of the motor, reduce the noise of the motor, and increase the binding force

Pending Publication Date: 2017-03-22
GREE ELECTRIC APPLIANCES INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Because the brushed DC motor in the prior art has technical problems such as small fastening force of the brush holder, tangential clearance of the brush, length of the cantilever, etc., which affect the performance of the motor noise and EMC, etc., the present invention researches and designs a Brush holder fixing plate and brushed motor with same

Method used

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  • Brush holder fixing plate and brush motor with same
  • Brush holder fixing plate and brush motor with same
  • Brush holder fixing plate and brush motor with same

Examples

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Effect test

Embodiment 1

[0030] like figure 1 As shown, the present invention provides a brush holder fixing plate 1, which is a flat plate structure and includes a first plane 11 and a second plane 12 arranged opposite to each other. The fixing plate 1 includes a plurality of A brush holder insertion port 13 that allows the brush holder 2 to pass through and form a plug-in connection with it, and surrounds at least one of the brush holder insertion ports on the first plane 11 and / or the second plane 12 Protrusions 14 protruding outward (that is, away from the first and second planes) are provided at least part of the surrounding positions (that is, part of the position around the brush holder insertion port (that is, partially surrounded) or all positions (that is, completely surrounded)) .

[0031] The present invention realizes the reliability of cooperation between the brush holder and the brush holder fixing plate and the stability of the size of the brush holder by increasing the boss structur...

Embodiment 2

[0033] In this embodiment, on the basis of Embodiment 1, preferably, the brush holder insertion port 13 has a rectangular shape, and the protrusion 14 is disposed on at least one side of the rectangular brush holder insertion port. This is the specific and preferred structural shape of the brush holder socket of the present invention.

[0034] Preferably, the protrusions are simultaneously arranged on the four sides of the rectangular brush holder socket, forming a rectangular boss. This is the preferred setting method of the protrusion when the brush holder insertion interface of the present invention is in a rectangular shape. It is arranged on the four sides of the rectangular brush holder insertion interface to form a rectangular boss, which can enhance the four directions. The role of large contact area.

[0035] Preferably, the four protrusions are all arranged on the first plane, and the four protrusions protrude outward by the same preset height (or preset distance) r...

Embodiment 3

[0041] The present invention provides a brush holder fixing plate 1, which is a flat plate structure and includes a first plane 11 and a second plane 12 arranged opposite to each other. connected to the brush holder socket 13, and on the first plane 11 and / or the second plane 12, at least one of the circumferences of at least one brush holder socket is provided with an inward depression (ie grooves (not shown in the figure) away from the plane on which the grooves are provided and towards the plane on which no grooves are provided.

[0042] On the first plane and / or the second plane on the brush holder fixing plate, at least one place around at least one brush holder insertion port is provided with an inwardly recessed groove, which can increase the size of the brush holder and the brush holder. The contact surface between the fixed plates increases the bonding force between the brush holder and the fixed plate, enhances the fastening effect between the brush holder and the fi...

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PUM

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Abstract

The invention provides a brush holder fixing plate and a brush motor with the same. The brush holder fixing plate (1) comprises a first plane (11), a second plane (12) and a plurality of brush holder inserting openings (13), wherein the first plane (11) and the second plane (12) are oppositely arranged; the plurality of brush holder inserting openings (13) penetrate through the first plane and the second plane, can permit a brush holder to pass and can form inserting connection with the brush holder; and bumps (14) protruding outwards or grooves sinking inwards are arranged in at least one part of positions around the periphery of at least one brush holder inserting opening (13) in the first plane and / or the second plane. Through the brush holder fixing plate, the contact surface between the brush holder and the brush holder fixing plate can be increased, the binding force between the brush holder and the fixing plate is improved, the fastening effect between the brush holder and the brush holder fixing plate after assembly is strengthened, the brush holder and the brush holder fixing plate are prevented from being loosened to affect the normal work performance of the motor, the size after the brush holder is matched with the brush holder fixing plate can be stabilized, the performance of the motor is improved, the noise of the motor is reduced and the EMC performance is improved.

Description

technical field [0001] The invention belongs to the technical field of motors, and in particular relates to a brush holder fixing plate and a brushed motor with the same. Background technique [0002] At present, the function of the brush device in the brushed DC motor is to connect the static external DC circuit with the rotating armature circuit through the commutator. The brush device is composed of a brush, a brush holder, a brush holder fixing plate and the like. Wherein, the electric brush is a conductive block made of graphite, etc., and is placed in the brush holder. In small brushed DC motors, the brush holder is usually fixed on the brush holder fixing plate, and the brush holder fixing plate is installed on the end cover or the bearing chamber. The structure of the brush holder fixing plate directly affects the matching dimensions of the brush and the brush holder (such as the tangential clearance of the brush, the length of the cantilever, etc., such as Figure...

Claims

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Application Information

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IPC IPC(8): H02K5/14H02K23/00
CPCH02K5/145H02K23/00
Inventor 汪汉新黄积光龚敏龙胜民伍尚权
Owner GREE ELECTRIC APPLIANCES INC
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