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US 7,002,090 B2Granted
Key switches
AssigneeBrother Kogyo Kabushiki Kaisha
InventorNobuo Kato
Life of this patent
Estimating the term…
Abstract
A key switch includes a front cover formed with a cursor key hole. In the front cover, a first rib is formed on a first support wall and a second rib is formed on a second support wall. Accordingly, when a cursor key part disposed in the cursor key hole is pressed, it can be restrained against motion in a shorter side direction. The operationality of a cursor key can be improved, which allows a correct operation.
Claims25
A key switch comprising:
- a cover provided with a key guide hole;
- an elongated key part having a side wall and being disposed in the key guide hole;
- a pair of support walls provided in the key guide hole so that the support walls face each other in a shorter side direction of the key part;
- and
- a circuit board including a first contact and a second contact and being disposed below the key part, the first contact being turned on when one end portion of the key part in a longer side direction is pressed and the second contact being turned on when the other end portion of the key part is pressed;
- wherein the key switch further comprises a first rib formed on each of the support walls, and
- the first rib comes into contact with the side wall when the key part is pressed so that the key part is restrained against motion in a shorter side direction.
4 more elements
A key switch comprising:
- a cover provided with a key guide hole;
- an elongated key part having a side wall and being disposed in the key guide hole;
- a pair of support walls provided in the key guide hole so that the support walls face each other in a shorter side direction of the key part;
- and
- a circuit board including a first contact and a second contact and being disposed below the key part, the first contact being turned on when one end portion of the key part in a longer side direction is pressed and the second contact being turned on when the other end portion of the key part is pressed;
- wherein the key switch further comprises a second rib formed on each of the support walls, and
- the second rib comes into contact with the side wall when the key part is pressed so that the key part is restrained against motion in a shorter side direction.
4 more elements
A key switch comprising:
- a cover provided with a key guide hole;
- an elongated key part having a side wall and being disposed in the key guide hole;
- a pair of support walls provided in the key guide hole so that the support walls face each other in a shorter side direction of the key part;
- and
- a circuit board including a first contact and a second contact and being disposed below the key part, the first contact being turned on when one end portion of the key part in a longer side direction is pressed and the second contact being turned on when the other end portion of the key part is pressed;
- wherein the key switch further comprises a first rib formed on each of the support walls and a second rib formed on each of the support walls, and
- the first rib comes into contact with the second rib when the key part is pressed so that the key part is restrained against motion in a shorter side direction.
4 more elements
Dependencies are inferred from the claim text.