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Patent Searching and Data

Document Type and Number:
WIPO Patent Application WO/2019/171863
Kind Code:
In order to provide a push button switch member that, while maintaining a large stroke, does not produce a rapid variation in load in a stage preceding a clicking sensation accompanying a deformation of a movable contact, the present invention is a push button switch member (30) provided with an operation key (10) disposed so as to face the projection side of a dome-shaped movable contact (20), wherein: the operation key (10) is provided with a key body (11), a dome part (12), a leg part (13), and a rib (16) projecting from below the key body (11) toward the movable contact (20); the movable contact (20) is provided with a dish part (21) that receives a pressing movement applied to the key body (11) and comes into contact with a fixed contact (42) on a substrate (40), and an outside fixed part (25) that is located on the radially outer side of the dish part (21) and is fixed at a position on the radially outer side of the key body (11); and the rib (16) is formed so that when the key body (11) is pressed toward the movable contact (20), the rib (16) shrinks in the length direction of the rib (16), between the rib (16) and the dish part (21), at a stage prior to the dish part (21) bending or buckling.

ITO Masayuki (2146-5, Oaza Hirooka Kataish, Shiojiri-shi Nagano 05, 〒3990705, JP)
Application Number:
Publication Date:
September 12, 2019
Filing Date:
February 06, 2019
Export Citation:
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SHIN-ETSU POLYMER CO., LTD. (1-9 Kanda-Sudacho, Chiyoda-ku Tokyo, 41, 〒1010041, JP)
International Classes:
H01H13/48; H01H9/18; H01H13/02; H01H13/52; H01H13/66
Domestic Patent References:
Foreign References:
Attorney, Agent or Firm:
MEBUKI IP LAW FIRM et al. (1037-5, Kobuchisawa-cho Hokuto-sh, Yamanashi 44, 〒4080044, JP)
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