Keyswitch having bending links
AssigneeAlps Electric Co., Ltd.
InventorHideki Ito
Life of this patent
Estimating the term…
Abstract
A keyswitch includes an elastic member for elastically biasing a keytop upward, a base for supporting the elastic member, and a switch circuit which includes stationary contacts and a movable contact for switching states of the switch circuit by vertically operating the keytop. A first link and a second link each include two plates that are hinged so as to be foldable at an intersection as fulcra, and are disposed adjacent each other with a predetermined angle therebetween. In response to the stretching and compression of the elastic member by vertically operating the keytop, the folding angles between the two plates of the first link and the two plates of the second link are variable.
Claims7
A keyswitch comprising:
- a keytop;
- a first link and a second link for vertically movably supporting the keytop;
- an elastic member for elastically biasing the keytop upward;
- a base for supporting the elastic member;
- and
- a movable contact and a stationary contact for switching states of a switch circuit by vertically operating the keytop,
- wherein the first and second links each have two plates that are hinged so as to be foldable at an intersection, the first and second links being disposed adjacent each other with a predetermined angle therebetween, and
- wherein, in response to stretching and compression of the elastic member resulting from vertically operating the keytop, folding angles between the two plates of the first link and between the two plates of the second link are variable.
Dependencies are inferred from the claim text.