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Brush holder structure of rotating machine

A technology for rotating motors and brush holders, which is applied in the direction of rotating current collectors, current collectors, circuits, etc., and can solve problems such as deformation of the brush handle and failure to prevent gaps

Inactive Publication Date: 2004-08-04
MITSUBA CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In this regard, a method of rigidly inserting the through hole and the riveting piece that reduces the gap is also considered (the width of the through hole is processed to the same size as the thickness of the riveting piece), but in this case, there will be When the riveting piece is inserted through, the brush handle itself will be deformed, so in any case, the hole width of the through hole must be greater than the thickness of the riveting piece, and the gap cannot be prevented.

Method used

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  • Brush holder structure of rotating machine
  • Brush holder structure of rotating machine
  • Brush holder structure of rotating machine

Examples

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Embodiment Construction

[0030] Next, according to Figure 1 to Figure 10 The accompanying drawings describe the first embodiment of the present invention.

[0031] In the drawings, 1 is an electric motor (rotary electric machine) constituting the power steering apparatus, and in the electric motor 1, one end of the motor shaft 1a is supported by a bracket not shown, and the other end of the motor shaft 1a is supported by a The penetrating form is supported by the drive side bearing frame 2 covering the opening end (the other end) of the bracket. In addition, on the motor shaft 1a, a commutator 3 is integrally embedded in a portion facing the driving side bearing frame 2, and an iron core 5 with a wound coil 4 is externally embedded in a portion opposite to the frame to form a rotor. And, the coil 4 wound in the iron core 5 is electrically connected to the commutator 3, and as will be described later, power is supplied from the brush 6 to the commutator 3 according to supply of an external power supp...

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PUM

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Abstract

To prevent backlash in a brush holder portion and further reduce noise when the brush holder is formed by caulking a holder onto a stay. Through holes (7f and 8f) are formed in the inner radius-side portions of stay portions (7a and 8a) formed in stay units (7 and 8). Protruded pieces (9f) are formed on the inner radius side of caulking pieces (9d) of the holder (9). The hole width of the through holes (7f and 8f) at first rim portions (7h and 8h) is made smaller than the plate thickness of the protruded pieces (9d). The protruded pieces (9d) are forcedly fit, and thereby forming deformation preventing portions. In this state, the caulking pieces (9d) are caulked, and thereby both the leg pieces (9a) of the holder are prevented from springing back.

Description

technical field [0001] The present invention belongs to the technical field of a brush holder structure used in electrical components mounted on a vehicle, especially a rotating electric machine such as a power steering device. Background technique [0002] Generally, in such a rotating electrical machine, a riveting piece is protrudingly provided on the leg piece of the brush handle having a bottom piece and a pair of leg pieces, and the brush holder is formed by inserting the riveting piece through a through hole formed on the locking piece ( brush holder), and in this brush holder, the brush connected to the commutator is held (stored). In this device, when the commutator rotates with the rotation of the rotating motor, the rotating load also acts on the brush handle through the brush connected to the commutator, but the rotating load only affects the brush handle. Riveted tabs for circumferential support. Therefore, if the rigidity of the handle is insufficient, proble...

Claims

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Application Information

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IPC IPC(8): H02K5/14H01R39/38H02K13/00
Inventor 须具周史
Owner MITSUBA CORP
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