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Brush carrier for electromotor, manufacturing method of brush carrier, and electromotor

A brush holder and motor technology, applied in brush manufacturing, electric components, circuits, etc., can solve the problems of loss of shape stability, limiting the accuracy of positioning carbon brushes, etc., to achieve the effect of saving devices and improving functions

Inactive Publication Date: 2014-07-09
ROBERT BOSCH GMBH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Due to production tolerances during production and material properties including thermal expansion of the plastic, the achievable accuracy for positioning the carbon brushes is likewise limited
Furthermore, plastic receptacles for carbon brushes have the disadvantage that the plastic loses its dimensional stability from a certain boundary use temperature (approximately 180° C.)
An additional disadvantage is the temperature-dependent gap between the carbon brushes and the holding element made of plastic, since the coefficients of thermal expansion of the carbon brushes and the holding element differ considerably from each other

Method used

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  • Brush carrier for electromotor, manufacturing method of brush carrier, and electromotor
  • Brush carrier for electromotor, manufacturing method of brush carrier, and electromotor
  • Brush carrier for electromotor, manufacturing method of brush carrier, and electromotor

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Embodiment Construction

[0026] in the attached figure 1 Shown in the insert 10, which acts as figure 2 Components of the brush holder 100 shown in . The brush holder 100 is in turn part of an electric motor which is used for adjusting elements (windows, seats or similar institutions).

[0027] In the exemplary embodiment shown, the insert 10 comprises two receiving elements 11 , 12 in the form of a charcoal burner for charcoal brushes (not shown). The receiving elements 11 , 12 each have, by way of example and without limitation, a rectangular cross-section with a continuous longitudinal opening 13 , wherein at the upper side and at the sides of each receiving element 11 , 12 Longitudinal gaps 14 , 15 are formed over partial regions of the length of the receiving elements 11 , 12 . At the one receiving element 11 , a fastening element 16 for a spring element not shown is integrally formed on its upper side, which acts on the carbon brushes with a spring force in a known manner, so that The spri...

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Abstract

The invention relates to a brush carrier (100, 100a) for an electromotor and a manufacturing method thereof. The brush carrier has two receiving elements (11, 12) for receiving brush elements. The receiving elements (11, 12) made of plastic, are connected to existing base portion (25, 25a). The receiving elements (11, 12) are formed as powder injection molded elements made from metallic powder and ceramic powder.

Description

technical field [0001] The invention relates to a brush holder for an electric motor according to the preamble of claim 1 . The invention also relates to a method for producing the brush holder according to the invention and to an electric motor using the brush holder according to the invention. Background technique [0002] A brush holder according to the preamble of claim 1 is already known from the prior art. In this case, the brush holder comprises a base body made of plastic, on which receiving elements made of metal for brush elements (carbon brushes) are arranged. The receiving elements known from the prior art are designed as punched bent parts and are connected to the base body either mechanically (screws, rivets) or by extrusion of the base body with plastic. [0003] In order to increase the power density and thereby save weight, electric motors using multi-pole magnetic circuit systems are increasingly being used today. Such electric motors, which are used, fo...

Claims

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Application Information

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IPC IPC(8): H01R39/38H01R39/415H01R43/12H02K5/14
CPCH01R39/385H01R39/381H01R39/388H02K5/148
Inventor G.肖尔普P.施托伊尔
Owner ROBERT BOSCH GMBH
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