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Electric machine with a brush carrier

A brush holder and brush technology, applied in the field of electric motors, can solve the problems of poor motor heat dissipation, motor power loss, imprecise positioning, etc., and achieve the effects of reducing tolerance accumulation, improving vibration performance, and good heat dissipation

Inactive Publication Date: 2007-10-10
ROBERT BOSCH GMBH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Since the brush container is surrounded by the closed plastic cover of the brush holder, this type of motor does not dissipate heat well, resulting in heat accumulation which can lead to damage to the motor
In addition, due to the above-mentioned construction of the brush holder with the plastic housing and the brush holder fixed therein, as well as due to the type of mounting for insertion and snapping or clamping, different tolerances arise which accumulate in a disadvantageous manner and are due to different components. precise positioning which can result in a loss of power to the motor

Method used

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  • Electric machine with a brush carrier
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Embodiment Construction

[0015] Hereinafter, an embodiment of the present invention will be described with reference to FIGS. 1 and 2. FIG.

[0016] Figure 1 shows a brush holder 1 of a motor, especially a commutator motor. The brush holder 1 is made of an electrically insulating material, such as plastic, by means of injection molding. The electrical connector 9 with the contact 14 is integrally formed on one side of the brush holder 1.

[0017] It can be seen from FIG. 1 that two brush containers 2 are arranged on the brush holder 1. Two brush containers 2 are arranged next to the center hole 12 of the brush holder 1 at 180° correspondingly. The central hole 12 is used in particular to pass the rotor shaft. The conductive material for the two brush containers 2 is preferably made of steel plate into a rectangular shape. Inside the brush container 2 is a bag-shaped cavity to accommodate the brush 3. The container 2 can be stamped and formed from a steel plate, for example.

[0018] As shown in FIG. 1, a ...

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PUM

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Abstract

The invention relates to an electric machine, especially an electric motor, comprising a brush carrier (1) made of an insulating material and at least one brush (3) arranged in a tubular brush holder (2). The tubular brush holder (2) is made of a conducting material and is disposed in such a way that it is exposed on the brush carrier (1). An integral electric connection element (4,5) is provided in the brush carrier (1) for electrical connection.

Description

Technical field [0001] The invention relates to a motor, in particular a motor, which comprises a brush holder made of insulating material and at least one brush arranged in a container. Background technique [0002] This type of motor is well known, for example, as a commutator motor. A contact brush of this type of motor is arranged as a brush in a container and is in sliding contact with a commutator arranged on the rotor. The current is transmitted to a rotor winding that is rotatably supported by brushes and commutators. The brush holder of this type of motor has a plastic outer cover, and the above-mentioned carbon brush container can be clamped by inserting into the outer cover. The plastic cover completely closes the container. When this type of motor is used, for example, as an auxiliary drive device of an automobile, for example, as a wiper motor or as a window regulator motor, severe heat may be generated on the brushes. Since the brush container is surrounded by the c...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01R39/38H02K5/14H02K5/22
CPCH01R39/388H02K5/148H02K5/225H01R39/383H01R39/385
Inventor C·迈尔
Owner ROBERT BOSCH GMBH
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