US 12,308,003 B2
Spring keyboard
Xiaoxian Fan, Zhuhai (CN); Dominic Chun hei Au, Zhuhai (CN); Guozong Liu, Zhuhai (CN); and Peng Zhou, Zhuhai (CN)
Assigned to Medeli Musical Instrument (Zhuhai) Co., Ltd., Zhuhai (CN); and Medeli Electronics (Shanghai) Co., Ltd, Shanghai (CN)
Appl. No. 18/017,082
Filed by Medeli Musical Instrument (Zhuhai) Co., Ltd., Zhuhai (CN); and Medeli Electronics (Shanghai) Co., Ltd., Shanghai (CN)
PCT Filed Apr. 12, 2021, PCT No. PCT/CN2021/086440
§ 371(c)(1), (2) Date Jan. 20, 2023,
PCT Pub. No. WO2022/016913, PCT Pub. Date Jan. 27, 2022.
Claims priority of application No. 202021494698.4 (CN), filed on Jul. 24, 2020.
Prior Publication US 2023/0298544 A1, Sep. 21, 2023
Int. Cl. G10C 3/12 (2006.01)
CPC G10C 3/12 (2013.01) 5 Claims
OG exemplary drawing
 
1. A spring keyboard, comprising: a key support and a plurality of keys installed on the key support, wherein a back end of one of the plurality of keys is connected with the key support through a spring, wherein the key support includes a first rotary structure, and the one of the plurality of keys includes a second rotary structure matched with the first rotary structure and is rotatable up and down around the first rotary structure, wherein the key support further comprises a limit seat, and the one of the plurality of keys includes a limit reverse buckle matched with the limit seat;
wherein the limit reverse buckle comprises a connecting part and a reverse buckle part, wherein a first end of the connecting part is connected with the one of the plurality of keys, and a second end of the connecting part is connected with the reverse buckle part, wherein the reverse buckle part comprises a buckle facing toward the front end of the one of the plurality of keys;
wherein the buckle has a clearance fit with the limit seat, wherein when the front end of the one of the plurality of keys is in a horizontal state, a gap exists between the buckle and the limit seat, wherein when the front end of the one of the plurality of keys is pressed down, the gap between the buckle and the limit seat gradually decreases until the buckle abuts against the limiting seat.