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:
Jul. 11, 2017
Filed:
Jul. 26, 2016
Ntn Corporation, Osaka-shi, Osaka, JP;
Kenichi Suzuki, Iwata, JP;
NTN CORPORATION, Osaka, JP;
Abstract
Provided is an in-wheel motor drive device which detects an abnormality with high precision over the entire operation range of a motor by measuring the temperatures of a lubricating oil and a motor coil. The in-wheel motor drive device includes an electric motor (), a wheel bearing (), a speed reducer (), a lubricating oil supply mechanism (Jk), and a controller (U). An oil temperature sensor (Sb) is disposed in a lubricating oil passage () in the speed reducer (), and a coil temperature sensor (Sa) is disposed on a motor stator. The controller (U) includes a motor output limit () that limits an electric current in the electric motor () when at least one of temperatures measured by the oil temperature sensor (Sb) and by the coil temperature sensor (Sa) has exceeded a corresponding predefined threshold.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile