| 摘要 |
PURPOSE: A key switch is provided to simplify a structure and an assembling process by using a contact point between both links as a rotary axis. CONSTITUTION: A key switch includes a key top(10) for receiving the pressure of a user's finger, a link(20) for transmitting an operation of a key by the pressure of the key top(10), and an FPC(Flexible Printed Circuit)(30) for recognizing the operation of the key from the link(20). The link(20) is formed with an elastic body, a shoulder portion(24), the first leg(21), and the second leg(22). A groove(25) and a projection(26) are formed at each predetermined position of the first and the second legs(21,22), respectively. A link rotation shaft(26T) is formed with the groove(25) and the projection(26). A fixing projection(29) is formed at each side of the first and the second legs(21,22), respectively. The fixing projection(29) is connected to a frame(40) and a frame projection(41). The shoulder portion(24) is rotated around the link rotation shaft(26T) and the link rotation shaft(26T) is elevated from the fixing projection(29) when the key top(10) is moved to the bottom direction.
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