Patent ID: 6936782
Filing Date: 2005-08-30
Classification: H01H

Abstract:
1. A keyboard switch comprising a key top, a base plate installed on a side facing the key top, an insulation film sheet mounted thereon, an elastic member for applying elasticity to the key top at a predetermined height from the base plate, a plurality of link members for supporting the key top to be freely lifted to or lowered from the base plate, and a contact point portion opened or closed by the lifting or lowering operation of the key top, wherein each of the plurality of link members has a first end portion and a second end portion facing each other, the plurality of link members being installed so as not to cross each other with the first end portions slidably supported by slide supporting portions formed on the key top and the second end portions rotatably supported by rotating supporting portions formed on the base plate, and wherein each of the plurality of link members has a first side portion and a second side portion orthogonal to the first end portion and the second end portion so that the first side portion and the second side portion face each other, first shaft portions protrude to the outside from the first side portion and the second side portion of the first end portion, second shaft portions protrude in the same directions as the first shaft portions from the first side portion and the second side portion of the second end portion, the first shaft portions are slidably supported by the slide supporting portions of the key top, and the second shaft portions are rotatably supported by the rotating supporting portions of the base plate.