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Patent Searching and Data


Title:
ELECTRIC POWER STEERING DEVICE
Document Type and Number:
WIPO Patent Application WO/2018/185825
Kind Code:
A1
Abstract:
In electric power steering devices in which the control unit and motor are formed integrally, if the control unit was accommodated inside a case, there was a need for a frame to partition the motor from the control unit, but there was a problem that the pressure on the case caused by providing the frame resulted in the case deforming, and the positional accuracy of the center of the rotary shaft of the motor would be compromised. As a countermeasure, in the present invention, in order to reduce deformation of a case, a step section is provided on the inside wall surface of a case and a frame is caused to abut the step section, and furthermore, a junction portion is provided between the outer periphery of the frame and the inner periphery of the case, thereby restricting movement of the frame.

Inventors:
ONISHI Yoshihiko (7-3 Marunouchi 2-chome, Chiyoda-k, Tokyo 10, 〒1008310, JP)
UDO Toyoaki (7-3 Marunouchi 2-chome, Chiyoda-k, Tokyo 10, 〒1008310, JP)
Application Number:
JP2017/014032
Publication Date:
October 11, 2018
Filing Date:
April 04, 2017
Export Citation:
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Assignee:
MITSUBISHI ELECTRIC CORPORATION (7-3 Marunouchi 2-chome, Chiyoda-ku Tokyo, 10, 〒1008310, JP)
International Classes:
H02K5/04; B62D5/04; H02K11/30
Attorney, Agent or Firm:
OIWA Masuo et al. (35-8, Minamimukonoso 3-chomeAmagasaki-sh, Hyogo 33, 〒6610033, JP)
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