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Motor apparatus having rotational position detector

A motor unit and connector technology, applied in the direction of electromechanical devices, electrical components, electric components, etc., can solve the problems of reducing the reliability of the waterproof wiring structure, increasing the number of parts and working processes, and lengthening the wiring structure.

Inactive Publication Date: 2009-07-22
DENSO CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Accordingly, the connector unit (wiring) fixed outside the gear case connects the connection terminal of the fixed terminal and the connection terminal connected to the brush to excite the armature, so that the wiring structure becomes long and complicated, increasing the number of parts and number of work processes, and reduces the reliability of the waterproofing of the wiring structure

Method used

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  • Motor apparatus having rotational position detector
  • Motor apparatus having rotational position detector
  • Motor apparatus having rotational position detector

Examples

Experimental program
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Embodiment Construction

[0019] The motor arrangement according to the invention is described below. The motor device 1 is used to start the wiper system (especially the rear wiper system). As shown in FIG. 1 , a motor device 1 is provided with a motor unit 2 and a gear unit 3 (reduction unit).

[0020] The motor unit 2 is provided with a yoke housing 4 formed in a substantially cylindrical shape having a bottom. The yoke housing 4 has a peripheral surface including a pair of arcuate portions 4a and a pair of flat portions 4b. The flat portion 4a is arranged radially outwardly opposite the flat portion 4b. Such as figure 2 As shown, the motor unit 2 is also provided with a pair of magnets 5 and an armature 6 . The yoke housing 4 encloses the magnet 5 and the armature 6 therein. The yoke case 4 holds the magnet 5 on the inner surface of the arcuate portion 4b, and rotatably supports the armature 6 . The arcuate portions 4 a face each other in the width direction Dw of the motor unit 2 , which is ...

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PUM

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Abstract

The motor 1 is provided with a yoke housing 4, a gear housing 41 for accommodating a worm shaft 42 and a worm wheel 43, and a brush holder 7 having a holder body 7b disposed between the yoke housing 4 and the gear housing 41 and holding brushes 10a, 10b. A fixed contact (contact members 31-33) slidably provided on a movable conductive plate provided on the end face of the worm wheel 43 contacts and does not contact the movable conductive plate in response to the rotation of the worm wheel 43. A communication hole 51d is formed at the end on the yoke housing side of the gear housing 41, and makes the interior of the gear housing 41 communicate with the yoke housing. The fixed contact is provided in the brush holder 7, and extends into the gear housing 41 through the communication hole 51d.

Description

technical field [0001] The invention relates to an electric machine arrangement with a rotational position detector, in particular an electric machine arrangement suitable for a wiper system of a vehicle. Background technique [0002] Conventionally, the motor device used has a motor unit provided with an armature and a gear unit provided with a reduction mechanism. In the reduction mechanism, the surface of the wheel gear is provided with a switching plate having a specific conductive pattern thereon, and the gear case of the gear unit is provided with a fixed terminal (see JP-060-44371-U for example) . In this type of motor device, the contact between the switching plate and the fixed terminal according to the rotational position of the gear is used as a switch detector, so that the motor device is suitable such as a wiper motor. That is, this type of motor device is provided with a so-called automatic return-and-stop mechanism. When the wiper switch is turned off to st...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H02K5/14
Inventor 八木秀幸
Owner DENSO CORP