Title:
KEY SWITCH STRUCTURE FOR TELEPHONE SET
Document Type and Number:
Japanese Patent JPH04235443
Kind Code:
A
Abstract:
PURPOSE: To reduce thickness without losing a click feeding.
CONSTITUTION: A membrane switch 33 equipped with an elastic disks 33b consisting plural thin plates is provided on a printed circuit board 31, plural recessed parts 36b corresponding to the elastic discs 33b of the membrane switch 33 is integrally molded with the back of the membrane switch, a key top sheet 36 with characters and symbols printed on its surface is placed on the printed circuit board 31, and the recessed part 36b of the applicable key to sheet 36 is formed to a shape and hardness so as to give a click feeding when the membrane switch 33 is changed-over.
Inventors:
KUMABE NORIHIRO
SUZUKI MINORU
HIRAFUJI KAZUO
SUZUKI MINORU
HIRAFUJI KAZUO
Application Number:
JP1247591A
Publication Date:
August 24, 1992
Filing Date:
January 10, 1991
Export Citation:
Assignee:
FUJITSU LTD
International Classes:
H04M1/02; H04M1/03; H04M1/22; (IPC1-7): H04M1/02; H04M1/03; H04M1/22
Attorney, Agent or Firm:
Akira Matsumoto