Title:
PUSH-BUTTON SWITCH
Document Type and Number:
Japanese Patent JP2016058372
Kind Code:
A
Abstract:
PROBLEM TO BE SOLVED: To prolong the keying lifetime of a push-button switch of which the key top part is being supported on a base part by a dome part.SOLUTION: A pusher part is formed from a harder material than that of the key top part. Alternatively, a recess is provided in the key top part, and a member formed from a harder material than that of the key top part is inserted therein. Even if a pressing load is applied after on-stroke in which the pusher part reaches a substrate electrode, a bending amount is small for the pusher part that is formed from the harder material than that of the key top part or for the member inserted into the recess, and a full stroke becomes small. When the bending amount becomes small, a stress to be applied to the thin dome part by iterative keying can be reduced, the dome part can be prevented from being damaged, and the keying lifetime of the push-button switch is prolonged.SELECTED DRAWING: Figure 1
Inventors:
HIRATANI MITSUTOSHI
YOKOYAMA KAZUFUSA
YOKOYAMA KAZUFUSA
Application Number:
JP2015065589A
Publication Date:
April 21, 2016
Filing Date:
March 27, 2015
Export Citation:
Assignee:
SHINETSU POLYMER CO
International Classes:
H01H13/14; H01H11/00; H01H13/52
Attorney, Agent or Firm:
Tomohiro Sakamoto
Ayumi Yada
Toshihiro Oishi
Ayumi Yada
Toshihiro Oishi