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:
Aug. 12, 2008
Filed:
Dec. 24, 2003
Kazuo Chikaraishi, Gunma, JP;
Kazuo Chikaraishi, Gunma, JP;
NSK Ltd., Tokyo, JP;
Abstract
A steering control apparatus in which a steering shaft coupled to a steering wheel is mechanically separated from a turning mechanism to turn a turning wheel, a steering angle of the steering wheel is detected, and the turning mechanism turns the turning wheel by a turning angle corresponding to the steering angle, includes a hypercycloidal mechanism including an external tooth gear revolving in a housing according to rotation of the steering wheel, an Oldham coupling mechanism to extract only a self-rotating movement in a rotation movement of the external tooth gear as a self-rotating movement of a rotation disk, and a rotation regulating mechanism by engagement between a groove formed in the rotation disk and a projection projecting from the housing. Then, a compact mechanical steering angle regulating mechanism is provided in which an allowable rotation range of the steering wheel is made ±180 degrees or more, and a low output and low capacity motor is used, and reduction in size and in cost of the apparatus is realized.