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. 18, 2020
Filed:
Jul. 04, 2018
Lenovo (Singapore) Pte. Ltd., Singapore, SG;
Masahiro Kitamura, Yokohama, JP;
Mitsuo Horiuchi, Yokohama, JP;
LENOVO (SINGAPORE) PTE. LTD., Singapore, SG;
Abstract
A push button device can stabilize an operation of a guide mechanism and can enhance product quality. A keyboard device includes the push button device and electronic apparatus includes the keyboard device. A key switch that is a push button device includes a key cap as a push button, a base plate, and a guide mechanism. The guide mechanism includes an outer frame member and an inner member. An outer frame member has a pair of inner surfaces opposed to each other with interposition of an opening in which the inner member is disposed, and each of the pair of inner surfaces is provided with a bearing hole to serve as a first engagement part. The inner member has a pair of outer surfaces opposed to the pair of inner surfaces of the outer frame member, and each of the pair of outer surfaces is provided with a rotation shaft to be a second engagement part. An outer peripheral surface of the rotation shaft has a tapered portion whose outer diameter gradually decreases in an insertion direction of the bearing hole.