The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Apr. 05, 2022
Filed:
Jan. 17, 2018
Hitachi Automotive Systems, Ltd., Hitachinaka, JP;
Kenji Nakayama, Hitachinaka, JP;
Hiroshi Kanazawa, Hitachinaka, JP;
HITACHI ASTEMO, LTD., Hitachinaka, JP;
Abstract
There is provided a novel electric power steering device capable of continuing a steering assist function as much as possible even in an environment where moisture enters inside a housing of an electric motor due to breakage of a rubber boot and an electrical short circuit phenomenon occurs. A statoraround which a winding is wound is vertically divided into two areas in the direction of gravity, a windingof one system is wound in the upper stator area of the statorwhile the windingof the other system is wound in the lower stator area of the stator, and power of the winding of one system is controlled by an electronic control meansof one system while power of the winding of the other system is controlled by an electronic control meansof the other system. Even if moisture enters inside the housing of the electric motor due to breakage of the rubber boot, occurrence of the electrical short circuit phenomenon is suppressed at least in the winding wound on the upper side, whereby the steering assist can be continued.