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Brush bag for a dynamo-electric machine

A technology of brush holder and brush, which is applied in the direction of circuits, current collectors, electrical components, etc., can solve the problems of high wear and tear of brushes, and achieve the effect of preventing noise and simple assembly

Active Publication Date: 2009-01-07
BOSCH SIEMENS HAUSGERATE GMBH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, this construction has the disadvantage that the spring provided for following the brush in the brush holder must have a much higher spring force than in the case of an embodiment with a gap between the brush and the brush holder
And the spring force required to overcome the friction between the brushes and the brush barrels can lead to high wear of the brushes on the commutator

Method used

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  • Brush bag for a dynamo-electric machine
  • Brush bag for a dynamo-electric machine
  • Brush bag for a dynamo-electric machine

Examples

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Embodiment Construction

[0038] An advantageous exemplary embodiment of the invention will now be described with the aid of an AC-universal motor for driving a drum mounted rotatably in a laundry treatment device. However, the invention is not restricted to one such specific embodiment of the electric motor and its use in a laundry treatment device. Instead, the invention relates to current conducting units or brush holders and brushes that can be used in electric machines with a mechanical commutator.

[0039] figure 1 A sectional view of the current-conducting unit and the commutator 7 of an AC universal motor (not shown), which will be referred to simply as an electric motor in the following, is shown. The current conducting unit consists of a connecting wire 1, a multilayer carbon brush 11, a spring 2 and a fixed brush holder 3, wherein the multilayer carbon brush has two conductive layers 5 and 8 and a between the high-ohmic or non-conductive layer 9. The connecting wire 1 is connected to the ...

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PUM

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Abstract

A brush bag, a brush and a current transfer unit for a dynamo-electric machine comprising a commutator, in particular for an electromotor. The current transfer unit comprises at least the brush, which is embodied, in particular, as a multi-layer carbon brush, and a brush bag. The brush bag is configured in such a manner that the distance between the brush and the brush bag in a front guiding area is smaller than the distance in a rear guiding area. Beating of the brush on the brush bag is visibly reduced due to the configuration thereof and noise caused by the beat is avoided.

Description

technical field [0001] The invention relates to a brush holder for an electric machine with a commutator, in particular for a current conducting unit of an electric motor, wherein the brush holder is made in particular of metal and has a guide for guiding a The guide area of ​​the brush, which is designed in particular as a multilayer carbon brush, has a distance between the guide area and the brush transversely to the longitudinal extension of the brush. Furthermore, the invention relates to a brush for such a brush cartridge, a current conduction unit for an electric machine with a brush cartridge and / or brushes or an electric machine with such a current conduction unit and a method for producing the brush cartridge. Background technique [0002] The current conducting unit is a so-called sliding contact system, which ensures the electrical connection between the power supply or outer terminals of the motor and the windings of the rotor. For this purpose, in known electri...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01R39/40H01R39/26
CPCH01R39/40H01R39/26Y10T29/49011H01R39/00
Inventor 约尔格·斯克里匹克赖纳·沙赫
Owner BOSCH SIEMENS HAUSGERATE GMBH