Title:
KEY SWITCH DEVICE PROVIDED WITH SCISSOR LIMITATION MATING SURFACE AND HAVING MATING PORTIONS MATED IN SURFACE-TO-SURFACE MANNER
Document Type and Number:
WIPO Patent Application WO/2016/180296
Kind Code:
A1
Abstract:
A key switch device provided with a scissor limitation mating surface and having mating portions mated in a surface-to-surface manner, said key switch device comprising a keycap (1), a reset body (11), a switch circuit (12), a support plate (15) provided with a mating portion, and scissor foot supports (16) provided with upper and lower mating portions, the scissor foot supports being respectively rotatably or slidably connected to the keycap and the mating portion of the support plate via the upper and lower mating portions, the scissor foot supports forming a synchronous linkage support structure via the mutual transfer of force, so as to ensure that the keycap moves up and down in parallel to the support plate, the mating portion of the support plate being formed of a support plate support portion, an upside-down mating portion (28a) located on a support plate cantilever plate (42), and at least one support plate opening limitation portion, the support plate opening limitation portion being arranged at an opening of a mating space between the support plate cantilever plate and the support plate, a support plate opening limitation curved surface being arranged on the support plate opening limitation portion. The key switch device having the metal scissor foot structure may be applied to computer keyboards, handheld computers, various types of embedded keyboards, and key switch devices performing keystroke operations. The strength and structural rigidity of the scissor foot support structure are increased, metal scissor feet are ultra-light and ultra-thin, and miniaturisation of the key device is further implemented.
Inventors:
CHEN FENG (CN)
Application Number:
PCT/CN2016/081367
Publication Date:
November 17, 2016
Filing Date:
May 08, 2016
Export Citation:
Assignee:
CHEN FENG (CN)
International Classes:
H01H13/705; H01H13/7065
Foreign References:
| CN102420056A | 2012-04-18 | |||
| CN101123144A | 2008-02-13 | |||
| CN101599379A | 2009-12-09 | |||
| US5278372A | 1994-01-11 | |||
| US5504283A | 1996-04-02 |
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