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:
Jan. 19, 2016
Filed:
Mar. 14, 2011
Keisuke Yano, Kikuchi, JP;
Ryuichi Hashimoto, Yamaga, JP;
Yasuo Hayashida, Kumamoto, JP;
Shingo Mori, Yamaga, JP;
Keisuke Yano, Kikuchi, JP;
Ryuichi Hashimoto, Yamaga, JP;
Yasuo Hayashida, Kumamoto, JP;
Shingo Mori, Yamaga, JP;
OMRON Corporation, Kyoto, JP;
Abstract
An object of the present invention is to provide a contact switching device that has small hitting sound during operation and is excellent in impact resistance. For this, there is a contact switching device in which a movable iron core () provided at one end portion of a movable shaft is attracted to a fixed iron core, based on excitation and degauss of an electromagnet portion, by which the movable shaft reciprocates in a shaft center direction, and a movable contact of a movable contact piece arranged at another end portion of the movable shaft contacts and departs from a fixed contact. Particularly, the movable iron core () has a cylindrical outer circumferential portion () and an annular attracting and sticking portion (), and a ratio between an inner diameter and an outer diameter of the cylindrical outer circumferential portion () is 77% or less.