Method of fabricating key switches and the product thereof

Details Method of fabricating key switches and the product thereof Method of fabricating key switches and the product thereof

1996-05-22

1997-12-23

Wong, Peter S.

Electricity: circuit makers and breakers

Multiple circuit control

Multiple switch

200310, H01H 900

Patent

active

057009848

ABSTRACT:
A key switch fabrication method including the steps of: i) molding a rubber pad from silicone resin, and making a rubber key stitch body from the rubber pad by stamping; ii) printing the desired letter or pattern on the top side (10) of the rubber key switch body (1) thus obtained, then drying the printed key switch body 1 by baking; iii) adhering a liquid silicone rubber on the key switch body over the printing thereof by spot glueing to form a transparent key cap; vi) heating the key switch thus obtained from step iii) in a baking oven at 60.degree. C. for 5 minutes and then heating it at 120.degree. C. for 10 minutes to harden the key cap; and v) examining the quality of the finished key pad.

REFERENCES:
patent: 4302648 (1981-11-01), Sado et al.
patent: 5270507 (1993-12-01), Nakamura et al.

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