Electricity: circuit makers and breakers – Electric switch details – Contact
Patent
1997-11-04
1999-06-15
Scott, J. R.
Electricity: circuit makers and breakers
Electric switch details
Contact
200 6182, 200534, H01H 1328, H01H 1352, H01H 106
Patent
active
059124458
ABSTRACT:
A miniature pushbutton switch capable of being made compact as well as being given a sufficient contacting pressure for reliable switch operation. The switch comprises a housing with first and second contacts, and an electrically conductive torsion coil spring composed of a coil portion and a pair of first and second arms integrally extending therefrom. The coil spring is assembled in the housing with the first arm constantly engaged electrically with the first contact and with the second contact in engageable relation with the second contact. A pushbutton is supported by the housing to be movable between an inoperative position and an operative position respectively of breaking and making the electrical connection between the second arm and the second contact. The first and second arms extend in opposite directions from the coil portion. The pushbutton is held in direct engagement with the coil portion to displace it when the pushbutton is pushed to the operative position, whereby the second arms is caused to resiliently deform to make or break the electrical connection with the second contact. As the coil portion is displaced by a force applied from the pushbutton, the second arm as well as the first arm are resiliently deformed to thereby develop sufficient contacting pressures even at the beginning of engaging the second arm with the second contact. Consequently, the switch can be easily designed to have sufficient contacting pressures for reliable switch operation, even with the use of the coil spring of reduced axial length.
REFERENCES:
patent: 3410975 (1968-11-01), Voland
patent: 4015094 (1977-03-01), Gavagan et al.
patent: 4169974 (1979-10-01), Peers-Tarventon
patent: 4488018 (1984-12-01), Hayashida
patent: 4698465 (1987-10-01), Oba
Matsushita Electric & Works Ltd.
Scott J. R.
LandOfFree
Miniature pushbutton switch with coil spring contact does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Miniature pushbutton switch with coil spring contact, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Miniature pushbutton switch with coil spring contact will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-403975