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Brush holder for a motor vehicle starter provided with a thermal protection system and corresponding motor vehicle starter

A brush holder, motor vehicle technology, applied in the direction of circuits, current collectors, electrical components, etc., can solve problems such as complex assembly execution

Active Publication Date: 2017-02-15
VALEO EQUIP ELECTRIC MOTEUR
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, this type of thermal protection system involves the creation of new components whose assembly inside the brush cage is relatively complex to execute

Method used

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  • Brush holder for a motor vehicle starter provided with a thermal protection system and corresponding motor vehicle starter
  • Brush holder for a motor vehicle starter provided with a thermal protection system and corresponding motor vehicle starter
  • Brush holder for a motor vehicle starter provided with a thermal protection system and corresponding motor vehicle starter

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Embodiment Construction

[0032] Figure 3a A brush holder 10 for a motor vehicle starter according to the invention is shown. The brush holder 10 comprises a support plate 12 having a generally annular form, on which is fixed a set of cages 13.1-13.4, each serving as a receiver for a brush 15.1-15.4. The axis X of the support plate 12 corresponds to the axis of the brush holder 10 .

[0033] as in Figure 2a and 2b As clearly seen in FIG. 2 , the support plate 12 is a one-piece component comprising a metal plate 121 and an overmolded layer 122 arranged on both sides of the metal plate 121 . The overmolding layer 122 is made of a plastic material ensuring good electrical insulation. The overmolding layer 122 at least partially protects the bearing face of the brush and the opposite face. The overmolding layer 122 covers all areas of the board 12 that are at risk, ie all areas where short circuits may occur.

[0034] The overmold layer 122 is heat sensitive and deformable from a predetermined temp...

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PUM

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Abstract

The invention mainly concerns a brush holder (10) for a motor vehicle starter comprising at least one first electrically conductive cage (13.1, 13.3) receiving a first brush (15.1, 15.3) having a first polarity, at least one second cage (13.2, 13.4) receiving a second brush (15.2, 15.4) having a second polarity different to the first polarity, at least one support plate (12) on which the first cage (13.1, 13.3) and the second cage (13.2, 13.4) are attached, said support plate (12) being electrically connected to the second polarity, and a deformable heat-sensitive member (122) that is deformable from a pre-defined temperature, characterised in that said deformable member (122) is arranged so as to electrically insulate said first cage (13.1, 13.3) relative to said support plate (12) and in that it further comprises a means (35) for moving said first cage (13.1, 13.3) or said support plate (12) in such a way as to establish contact between said first cage (13.1, 13.3) and said support plate (12) following a deformation of said deformable member (122).

Description

technical field [0001] The invention relates to a brush holder for a motor vehicle starter provided with a thermal protection system, and to a corresponding starter. The invention has a particularly advantageous but not exclusive application to starters having what are known as stop and start systems, which make it possible to stop and restart the thermal engine of a vehicle, in particular according to traffic conditions. Background technique [0002] In a known manner, the starter comprises protection means against excessive currents in the form of one or more electric fuses and / or one or more circuit breakers. thus, figure 1 An example is shown of a starter motor 1 comprising a fuse 2 fitted in series between the mains terminal 3 of the motor 1 and the windings 4.1, 4.2, 4.3, 4.4 of the starter of said motor. [0003] The fuse is designed so that when a predetermined maximum current flows through it, the fuse blows to cut off power to the motor. This makes it possible t...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02K5/14
CPCH02K5/14H02K23/18H02K23/66H01R39/59H02K11/25H02K11/27H02K5/148
Inventor M.金蒂尔M-A.纳林J.古奇斯
Owner VALEO EQUIP ELECTRIC MOTEUR
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