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:
Feb. 27, 2018
Filed:
Nov. 11, 2012
Wanxiang Qianchao(shanghai) Automotive Systems Co., Ltd., Shanghai, CN;
Wanxiang Group, Hangzhou, Zhejiang Province, CN;
Liangjie Zhou, Shanghai, CN;
Xiao Tao, Shanghai, CN;
Zhiyuan Ren, Shanghai, CN;
Suoping Wu, Shanghai, CN;
Jing Mao, Shanghai, CN;
Jian Chen, Shanghai, CN;
Xudong Cai, Shanghai, CN;
Jiangping Tang, Shanghai, CN;
WANXIANG QIANCHAO(SHANGHAI) AUTOMOTIVE SYSTEMS CO., LTD., Shanghai, CN;
WANXIANG GROUP, Hangzhou, CN;
Abstract
A device and method for detecting an absolute multi-turn rotation angle. The device includes a housing, a cover plate and a rotating shaft. The rotating shaft is fixed with a main gear, which is meshed with driven gears including a large driven gear and a small driven gear. The main gear is externally meshed with the large driven gear. The driven gears are connected with a two-stage speed reduction device which enables the rotating shaft to rotate multiple circles to slow down to a circle-number gear and enables the circle-number gear to rotate one circle only. Both driven gears and the circle-number gear are provided with bearings. The bearings have magnets therein, and the two magnets are relatively fixed with the driven gears and the circle-number gear, respectively. The top edges of the bearings fit with a printed circuit board, angle sensing chips which are fixed on the printed circuit.