Keyswitch structure

Details Keyswitch structure Keyswitch structure

1984-07-23

1986-02-11

Scott, J. R.

Electricity: circuit makers and breakers

Multiple circuit control

Multiple switch

200159B, H01H 312

Patent

active

045700397

ABSTRACT:
In a keyswitch structure, a number of recesses are formed in a lower case, and a projection with a flat top surface is formed inside each of the recesses. The recesses communicate with each other by means of grooves formed on the lower case, and fixed contacts are provided on the projections. A pattern is formed on the under surface of a flexible substrate put on the lower case so that movable contacts, included in the pattern, face the fixed contacts. An elastic sheet with a number of buttons is put on the flexible substrate, and the flexible substrate and the elastic sheet are fixedly held between an upper case and the lower case. When any of the buttons of the elastic sheet is pushed, the elastic sheet and the flexible substrate are elastically deformed to bring the movable contacts into contact with the fixed contacts.

REFERENCES:
patent: 4018999 (1977-04-01), Robinson et al.
patent: 4231098 (1980-10-01), Tanimoto
patent: 4334134 (1982-06-01), Janda

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