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Brush retainer for motor

A retainer and brush technology, which is applied in the direction of current collectors, rotating current collectors, circuits, etc., can solve the problems of low accuracy and achieve the effects of reducing noise formation, improving commutation accuracy, and saving manufacturing costs

Active Publication Date: 2018-06-29
ROBERT BOSCH GMBH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Here, the carbon bears against the relatively narrow edge of the passage perpendicular to the direction of contact, so that the positional accuracy of the carbon on the spring rod is relatively small and can be easily influenced, for example.
Furthermore, the current flow of the commutation current is not always reliably guaranteed via the small contact surface between the carbon and the spring bar.

Method used

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  • Brush retainer for motor
  • Brush retainer for motor

Examples

Experimental program
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Effect test

Embodiment Construction

[0025] figure 1 The electric motor 10 is shown, as it is used, for example, to adjust movable components in a motor vehicle, preferably a window pane, a sunroof or seat components. In this case, a stator 13 is arranged in the pole shoe 12 , inside which a rotor 15 is arranged, the rotor shaft 20 of which extends in the axial direction 24 from the pole shoe 12 into the axially adjoining gear housing 14 . In this case, the drive torque of the rotor shaft 20 is transmitted to a transmission arranged in the transmission housing 14 , which has an output element 22 which cooperates with a mechanism not shown, which The resulting mechanism moves, for example, parts of a vehicle seat or a window pane in a motor vehicle. In the axial direction 24 , between the pole piece 12 and the transmission housing 14 is arranged a plug-in module 16 , which is electrically connected to the brushes 26 of the brush carrier component 17 for electrical contacting arranged on the rotor shaft 20 The comm...

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Abstract

A brush retainer (19) used for a commutator (44) of an electric contact motor (10), a motor (10) and a method for manufacturing the brush retainer (19). The brush retainer has a spring arm (50), a brush (26) is fastened to a first end part (51) of the spring arm, the brush (26) has a contact surface (66) for contact with the commutator (55), the brush (26) has a bearing surface (65) at an end partside opposite to an squeezing direction (28) of the brush (26), a squeezing surface (64) is configured on the first end part (51) of the spring arm (50), and the bearing surface (65) of the end partside bears against the squeezing surface along a direction opposite to the squeezing direction (28), and thus the spring arm (50) can enable the brush (26) to squeeze relative to the commutator alonga radial direction.

Description

technical field [0001] The invention relates to a brush holder, an electric machine with such a brush holder and a method for producing such a brush holder. Background technique [0002] Electric motor drives are known from the prior art, which can be used, for example, to drive seat adjusters, window lifters and / or windshield wipers in motor vehicles. The electric motor drive has an electric motor arranged in a motor housing, which is operatively connected to a transmission arranged in a transmission housing, wherein the motor housing and transmission housing are fastened to each other, for example screwed to each other. joint or riveting. [0003] A brush holder component of an electric motor drive is known from DE 10 2010 062 727 A1, which is arranged axially between the electric motor and the transmission housing. Plugs for the current supply are arranged radially on the brush holder component. Various electronic components such as sensor components or tamper-proof co...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01R39/24H01R39/39
CPCH01R39/24H01R39/39H01R39/18
Inventor L.博多
Owner ROBERT BOSCH GMBH
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