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Brush holders for motors

A retainer and brush technology, applied in the direction of current collectors, rotary current collectors, circuits, etc., can solve the problem of small accuracy and achieve the effect of optimizing the pressing force

Active Publication Date: 2021-12-28
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 holders for motors
  • Brush holders for motors
  • Brush holders for motors

Examples

Experimental program
Comparison scheme
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 co...

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PUM

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Abstract

Brush holder (19) for electrically contacting a commutator (55) of an electric motor (10), and electric motor (10) and method for manufacturing a brush holder (19) having spring arms (50), fastening an electric brush (26) on the first end (51) of the spring arm, wherein the brush (26) has a contact surface for contacting the commutator (55) ( 66), wherein the brush (26) has an end-side abutment surface (65) opposite the abutment direction (28) of the brush (26), and the spring arm (50) A pressing surface (64) is formed on the first end (51), and the abutting surface (65) on the side of the end abuts against the pressing surface against the pressing direction (28). Therefore, the spring The arm ( 50 ) enables the brush ( 26 ) to be pressed radially against said commutator ( 55 ).

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 Patents(China)
IPC IPC(8): H01R39/24H01R39/39
CPCH01R39/24H01R39/39H01R39/18
Inventor L.博多
Owner ROBERT BOSCH GMBH