Key switch

Details Key switch Key switch

1995-07-06

1996-09-17

Walczak, David J.

Electricity: circuit makers and breakers

Electric switch details

Actuators

200344, H01H 1370

Patent

active

055559719

ABSTRACT:
The invention concerns a keyboard unit which is reduced in thickness, improved in operability, increased in service life, and decreased in manufacturing cost. A key switch comprises: a key top (40); an elastic member (51); a cross link structure (80) made up of an outer link (60) and an inner link (70); a membrane switch sheet (90) is arranged under the elastic member (51); and a frame (100) arranged under the membrane switch sheet (90). In the key switch, the key top (40) has an abutting portion (43) which abuts against the upper surface of the elastic member (51), and the end portions (63) of the outer link (60) and the end portions (73) of the inner link (70) are supported by a pair of fixing portions (101) and another pair of fixing portions (102), respectively, which are raised from the frame (100) and protruded over the membrane sheet (90).

REFERENCES:
patent: 5115106 (1992-05-01), Weiland et al.
patent: 5256843 (1993-10-01), Chiba et al.
patent: 5278371 (1994-01-01), Watanabe et al.
patent: 5298706 (1994-03-01), English et al.
patent: 5430263 (1995-07-01), English et al.

Affiliated with

Also associated with

Rating

Key switch does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Key switch, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Key switch will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-408045