Title:
SPRING KEYBOARD
Document Type and Number:
WIPO Patent Application WO/2022/016913
Kind Code:
A1
Abstract:
A spring (3) keyboard, comprising a key holder (1) and several keys (2); the keys (2) are installed on the key holder (1); back ends of the keys (2) are connected to the key holder (1) by means of springs (3); first rotating structures (41) are provided on the key holder (1); the keys (2) are provided with second rotating structures (42) that match the first rotating structures (41); the keys (2) may rotate up and down about the first rotating structures (41); limiting seats (51) are further provided on the key holder (1); the keys (2) are provided with limiting inverted buckles (52) that match the limiting seats (51); and the limiting inverted buckles (52) face the front ends of the keys (2). When the front end of a key (2) is pressed, the key (2) rotates up and down about a first rotating structure (41), and a limiting inverted buckle (52) and a limiting seat (51) on a key support (1) lock and tighten more. After the key (2) rotates the maximum distance downwards, the back end of the key (2) will not unhook, so that same will not be upwarped. The structure is simple and reliable, and the hidden danger of the keys (2) being detached is effectively eliminated.
Inventors:
FAN XIAOXIAN (CN)
AU CHUN HEI DOMINIC (CN)
LIU GUOZONG (CN)
ZHOU PENG (CN)
AU CHUN HEI DOMINIC (CN)
LIU GUOZONG (CN)
ZHOU PENG (CN)
Application Number:
PCT/CN2021/086440
Publication Date:
January 27, 2022
Filing Date:
April 12, 2021
Export Citation:
Assignee:
MEDELI MUSICAL INSTR ZHUHAI CO LTD (CN)
International Classes:
G10C3/12; G10H1/34
Foreign References:
| CN212750341U | 2021-03-19 | |||
| CN201066577Y | 2008-05-28 | |||
| CN87107833A | 1988-09-21 | |||
| JPH04303891A | 1992-10-27 | |||
| CN101800044A | 2010-08-11 | |||
| US20130283998A1 | 2013-10-31 |
Attorney, Agent or Firm:
J.Z.M.C. PATENT AND TRADEMARK LAW OFFICE (GENERAL PARTNERSHIP) (CN)
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