Keyboard device

Application Number: 00107966
Application Date: 2000.06.02
Publication Number: 1276611
Publication Date: 2000.12.13
Priority Information: 1999/6/4 JP 158770/99
International: G06F3/02;H01H13/14
Applicant(s) Name: Alps Electric Co., Ltd.
Inventor(s) Name: Nishijima Akio;Ito Hideki
Patent Agency Code: 11216
Patent Agent: liu jiyang
Abstract The purpose of the present invention is to provide a kind of keyboard apparatus that can raise the waterproof structure around the key for the shift key having torsion bar, space key, return key and so on. In plural key top housings 11, post-like support members 16 are integrally and erectly formed by the housing plate at the side of the key top housings corresponding to key tops with the attached torsion bars 6. The support members are formed to have a hollow structure, in which through holes 10 b are formed in the base end portions of the support members so as to pass through the housing plate. Waterproofing protuberances 9b for closing the through holes are disposed on the backside of housing plate. The spring portions 9a are used for pushing back the key tops upward. A sheet member has a sheet body portion 9c that makes the spring portions and the waterproofing protuberances integral with each other.