Title:
PUSH-BUTTON SWITCH MEMBER
Document Type and Number:
WIPO Patent Application WO/2023/037653
Kind Code:
A1
Abstract:
[Problem] To provide a push-button switch member in which the resistance drops rapidly to enable a clear push-down after a load with which a push-button is pushed reaches a maximum. [Solution] The present invention relates to a push-button switch member comprising: a keytop; a domed part; and a base part. When the keytop is pushed toward the base part side, the domed part is buckled and deformed, and when the pushing of the keytop is released, the domed part returns to its original shape. In a load-displacement curve 20, 30 that begins from the start of pushing of the keytop, passes through the buckling deformation of the domed part, and ends when a lower area of the keytop abuts a fixed part on an extension line of the keytop, a second angle B from a peak point where the load reaches a maximum value to a make point where the load reaches a minimum value is smaller than a first angle A from an initial point where the pushing of the keytop is initiated to the peak point.
Inventors:
ITO MASAYUKI (JP)
HIRAYA MITSUTOSHI (JP)
HIRAYA MITSUTOSHI (JP)
Application Number:
PCT/JP2022/019521
Publication Date:
March 16, 2023
Filing Date:
May 02, 2022
Export Citation:
Assignee:
SHINETSU POLYMER CO (JP)
International Classes:
H01H13/52
Foreign References:
| JPH1092264A | 1998-04-10 | |||
| JPH0686235U | 1994-12-13 | |||
| JP2020135951A | 2020-08-31 | |||
| JPH11288637A | 1999-10-19 | |||
| JP2006156159A | 2006-06-15 | |||
| JPH09154189A | 1997-06-10 |
Attorney, Agent or Firm:
MEBUKI IP LAW FIRM et al. (JP)
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