Title:
FORCE-CONTROLLABLE KEY
Document Type and Number:
WIPO Patent Application WO/2022/037135
Kind Code:
A1
Abstract:
Provided is a force-controllable key, comprising a center shaft, a first magnetic element and a coil assembly, wherein the center shaft, the first magnetic element and the coil assembly are coaxially arranged; the first magnetic element is sheathed over the center shaft, and the first magnetic element can move in a reciprocating manner in the coil assembly along with the center shaft in an axis direction; the coil assembly is configured to generate a magnetic attraction field or a magnetic repulsion field according to a variable current and use same to act on the first magnetic element; and the coil assembly comprises a plurality of coils. When the center shaft is pressed by external force, one of the plurality of coils generates a magnetic repulsion field, and after a preset period of time, the plurality of coils are connected in series to generate a magnetic attraction field. By means of rationally setting the number of coils generating a repulsion force and an attraction force, when the key is pressed, one of the coils generates a repulsion force, such that a response time can be shortened and the strength of the repulsion force is increased, and when an attraction force is generated, the plurality of coils are connected in series to generate a magnetic attraction field, such that the magnitude of the magnetic field can be guaranteed while the current is reduced, and heat generation of the coils can also be reduced.
Inventors:
YANG XIAOFENG (CN)
Application Number:
PCT/CN2021/092805
Publication Date:
February 24, 2022
Filing Date:
May 10, 2021
Export Citation:
Assignee:
DONGGUAN HEATMOVING ELECTRONIC TECH CO LTD (CN)
International Classes:
H01H36/00; H03K17/97
Foreign References:
| CN112509861A | 2021-03-16 | |||
| CN110970251A | 2020-04-07 | |||
| CN108415578A | 2018-08-17 | |||
| CN110645398A | 2020-01-03 |
Attorney, Agent or Firm:
CHOFN INTELLECTUAL PROPERTY (CN)
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