Electricity: circuit makers and breakers – Solid contact – Rocking actuator
Patent
1994-07-25
1997-08-12
Walczak, David J.
Electricity: circuit makers and breakers
Solid contact
Rocking actuator
200561, 200339, 200512, 200513, 200517, H01H 2100
Patent
active
056556500
ABSTRACT:
There is disclosed a push button switch which comprises rubber contacts each including a contact portion (311), a flared portion (312) formed integrally with the periphery of the contact portion (311), and a ring-shaped portion (313) formed integrally with a lower end of the flared portion (312) and disposed on a printed board (1) wherein the following relation is satisfied: 0.3.ltoreq.d/a.ltoreq.0.7, 4.ltoreq.d/t.ltoreq.6, 1.0.ltoreq.d/h.ltoreq.1.4, 150.degree..ltoreq..theta..ltoreq.165.degree., 1.5.ltoreq.h.ltoreq.3 where t is the thickness of the flared portion (312), d is the length of the flared portion (312), a is an inner diameter of the ring-shaped portion (313), .theta. is an opening angle formed by an inner side surface of the flared portion (312) and a top surface of the printed board (1), and h is the distance between a bottom surface of a conductor (32) and the top surface of the printed board (1). Only the rubber contacts provide a sufficient operational load and a clear click feeling required for a vehicle-mounted switch without using the conventional spring and sliding element. This accomplishes an inexpensive, small-sized vehicle-mounted push button switch.
REFERENCES:
patent: 4654488 (1987-03-01), Westfall
patent: 4851626 (1989-07-01), Nagashima
patent: 5115108 (1992-05-01), Ogawa et al.
patent: 5412165 (1995-05-01), Malone et al.
patent: 5426275 (1995-06-01), Maeda et al.
Bierman Jordan B.
Sumitomo Wiring Systems Ltd.
Walczak David J.
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