Title:
NEW OPTICAL SWITCH KEYBOARD
Document Type and Number:
WIPO Patent Application WO/2023/103836
Kind Code:
A1
Abstract:
Disclosed in the present utility model is a new optical switch keyboard, comprising a base, a PCB arranged above the base, a plurality of key switches arranged on the PCB, and a plurality of light conduction assemblies arranged in a manner of corresponding to the plurality of key switches on a one-to-one basis. Each light conduction assembly comprises an infrared emitting element and a photosensitive receiving element, which are arranged opposite each other. Each key switch is provided with a light blocking shaft used for blocking light between the infrared emitting element and the photosensitive receiving element. A plurality of light shielding covers, which correspond to the plurality of light conduction assemblies on a one-to-one basis, are provided between the PCB and the base. The new optical switch keyboard provided in the present utility model overcomes the defects of existing mechanical keyboards having an unstable working performance and being prone to short circuiting due to the abrasion caused by contact points of a positive electrode elastic piece and a negative electrode elastic piece in each key switch touching each other for a long time. In addition, the new optical switch keyboard achieves the aims of preventing optical crosstalk, preventing signal interference, and being dustproof and waterproof, and is beneficial for improving the conduction and disconnection accuracy of the key switches of the keyboard.
Inventors:
WU FUXI (CN)
HU YUANFENG (CN)
HU YUANFENG (CN)
Application Number:
PCT/CN2022/134967
Publication Date:
June 15, 2023
Filing Date:
November 29, 2022
Export Citation:
Assignee:
DONGGUAN CITY KAIHUA ELECT CO LTD (CN)
International Classes:
H03K17/969
Foreign References:
| CN217037159U | 2022-07-22 | |||
| CN216873184U | 2022-07-01 | |||
| CN217824924U | 2022-11-15 | |||
| CN204441139U | 2015-07-01 | |||
| CN111463053A | 2020-07-28 | |||
| CN213366432U | 2021-06-04 | |||
| US20140132516A1 | 2014-05-15 |
Attorney, Agent or Firm:
BEIJING XINGZHI XIANGDA INTELLECTUAL PROPERTY AGENCY CO., LTD. (CN)
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