Title:
KEYBOARD SWITCH
Document Type and Number:
WIPO Patent Application WO/2001/044917
Kind Code:
A1
Abstract:
A cover (29) is closed, and either a switch sheet (3) or a support plate (18) is slid from a waiting position to a retraction position in synchronization with an operation. At the retraction position, a part of a return spring (24) is accommodated in a retraction hole (17) made in the switch sheet (3). When the cover (29) is closed, a key top (2) is pressed down and the distance between the key top and the switch sheet (3) is decreased. However, since the part of the return spring (24) is retracted into the switch sheet (3), the return spring (24) can be retracted without elastically deforming the return spring (24).
Inventors:
KAMISHIMA OSAMU (JP)
Application Number:
PCT/JP1999/007109
Publication Date:
June 21, 2001
Filing Date:
December 17, 1999
Export Citation:
Assignee:
SMK KK (JP)
KAMISHIMA OSAMU (JP)
KAMISHIMA OSAMU (JP)
International Classes:
G06F1/16; H01H3/12; (IPC1-7): G06F3/02; H01H13/20; H01H13/70
Foreign References:
| JPH0465037A | 1992-03-02 | |||
| JPH0684425A | 1994-03-25 | |||
| JPH11345535A | 1999-12-14 |
Other References:
See also references of EP 1164463A4
Attorney, Agent or Firm:
Hayasaki, Osamu (1-chome Shibuya-ku Tokyo, JP)
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