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Reversing device for electric motor and electric motor with reversing device

A technology for reversing devices and electric motors, which is applied in the direction of circuits, collectors, electrical components, etc., can solve problems such as complex installation processes, and achieve the effect of low cost

Inactive Publication Date: 2019-07-12
ROBERT BOSCH GMBH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although such a reversing device can be installed or used with relatively simple spring parts, it also requires a relatively complicated and additional installation process, especially through the use of two spring parts.

Method used

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  • Reversing device for electric motor and electric motor with reversing device
  • Reversing device for electric motor and electric motor with reversing device
  • Reversing device for electric motor and electric motor with reversing device

Examples

Experimental program
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Embodiment Construction

[0023] figure 1 and 2 A first commutation device 10 according to the invention for an electric motor 1 is shown. The electric motor 1 is a DC motor which is preferably used in a comfort drive of a motor vehicle, such as a seat-adjustment drive, a window regulator drive, a sliding sunroof drive or similar drives.

[0024] The commutation device 10 comprises at least two brush guide elements 11, in figure 1 and 2 Only one of the brush guide elements 11 is shown in the illustration. In particular, the brush guide elements 11 , as known per se from the prior art, are arranged angularly offset from one another with respect to the axis of rotation 2 of the armature 5 of the electric motor 1 .

[0025] as in particular by means of figure 2 As can be seen, the armature 5 has a plurality of strip-shaped laminations 6 arranged on the periphery of the armature 5 and functioning as contacts for the carbon brushes 15 . The laminations 6 are arranged parallel to the axis of rotation ...

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PUM

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Abstract

The invention relates to commutators (10; 10a) for an electric motor (1), and the commutator (10; 10a) are respectively provided with a brush guide element (11; 11a) for guidance of a brush (15; 15a); a first spring element (20) for acting on the brush (15; 15a) against a rotating contact element (6) with a first force (F); and at least one second spring element (30, 31; 46) for acting on the brush (15; 15a) in a direction transverse to the longitudinal axis (33) of the brush (15; 15a ) against at least one surface (21, 22) of the brush guide element (11; 11a) with a second force (FV). According to the invention, the second spring element (30, 31; 46) are integrally connected with the brush guide element (11a; 11).

Description

technical field [0001] The invention relates to a commutation device of an electric motor. The invention also relates to an electric motor with a commutation device according to the invention. Background technique [0002] Such a reversing device is known from DE 10 2010 042 697 A1 of the applicant. The disclosed reversing device comprises a spring element with two spring sections, wherein one spring section presses against an end face of the brush facing away from a contact piece, and wherein the other spring section acts transversely to the longitudinal axis of the brush. on the brush. The last-mentioned spring section presses the brush against two V-shaped guide surfaces in the brush guide element for the brush. The second spring section, in combination with the V-shaped guide surface, serves to quiet or dampen the brushes during operation, in particular when switching the direction of rotation of an electric motor. As a result, the noise emission of the known reversi...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01R39/44H01R39/415
CPCH01R39/44H01R39/381H01R39/42
Inventor P·邓特T·米利
Owner ROBERT BOSCH GMBH