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US 10,763,054 B2Granted
Keyswitch device and keyboard
AssigneeFujitsu Component Limited
InventorsHiromi Ohtsuka, Daisuke Taga, Takuya Saitou, Momosuke Nakahara
Life of this patent
Estimating the term…
Abstract
A keyswitch device which is provided with a support mechanism which supports a keytop in a movable manner, and a membrane sheet which has a plurality of upper electrodes and a plurality of lower electrodes which respectively correspond to the plurality of the upper electrodes and which form contact pairs with the corresponding upper electrodes. A plurality of contact pairs are arranged for a single keytop. The rubber cup pushes the plurality of contact pairs which are arranged for the single keytop.
Claims5
A keyswitch device comprising:
- a moving member which moves by being pushed;
- a support mechanism which supports movement of said moving member in a vertical direction in a movable manner;
- an electrical connection member which includes contact pairs, each contact pair including a single upper electrode and a single lower electrode corresponding to the single upper electrode and coming into contact with the single upper electrode corresponding thereto when the moving member is pushed, one of the contact pairs forming part of a first electrical circuit, and another of the contact pairs forming part of a second electrical circuit which is different and independent from the first electrical circuit;
- and
- an elastic member, arranged between said moving member and said contact pairs, which has elasticity,
- wherein
- said elastic member has a single pushing part that corresponds to a plurality of corresponding contact pairs, the single pushing part having a V-shaped cross section facing all of upper electrodes of said corresponding contact pairs, the single pushing part including a top part having a ridge extending in a straight line in a single direction parallel to an alignment direction of the upper electrodes and positioned above the upper electrodes, and
- when the moving member is pushed, the ridge of said single pushing part pushes each upper electrode in all of said corresponding contact pairs simultaneously so that each upper electrode of said corresponding contact pairs comes into contact with a corresponding lower electrode.
5 more elements
A keyboard, comprising:
- a first electrical circuit;
- a second electrical circuit different and independent from the first electrical circuit;
- and
- plural keyswitches, each keyswitch including
- a key top which moves by being pushed;
- a support mechanism which supports movement of said key top in a vertical direction in a movable manner;
- an electrical connection member which includes at least two pairs of electrical contacts, each pair of the electrical contacts including a single upper electrode and a single lower electrode corresponding to the single upper electrode and coming into contact with the upper electrode corresponding thereto when the moving member is pushed, the upper electrode having a same shape as the lower electrode in each of the pairs, one pair of the electrical contacts forming part of the first electrical circuit, and another pair of the electrical contacts forming part of the second electrical circuit;
- and
- an elastic member which has elasticity, and which is pushed by the key top;
- wherein
- said elastic member has a single pushing part that corresponds to a plurality of contact pairs, the single pushing part having a V-shaped cross section facing all of upper electrodes of at least two corresponding pairs of electrical contacts and pushes said electrical connection member, the single pushing part having a top part with a ridge extending in a straight line in a single direction parallel to an alignment direction of the upper electrodes and positioned above the upper electrodes, and
- upon the key top of one of the keyswitches being pushed, the ridge of the single pushing part corresponding thereto pushes each of the upper electrodes of the at least two corresponding pairs of electrical contacts simultaneously into contact with a corresponding lower electrode.
9 more elements
Dependencies are inferred from the claim text.