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    • 92. 发明授权
    • Keyboard switch apparatus for electronic musical instrument
    • 电子乐器键盘开关装置
    • US4733590A
    • 1988-03-29
    • US800559
    • 1985-11-21
    • Keisuke Watanabe
    • Keisuke Watanabe
    • G10H1/053G10H1/34H01H13/64H01H13/712H01H13/807H01H21/00
    • H01H13/807G10H1/344G10H2220/281H01H2225/002H01H2225/018Y10S84/07
    • A keyboard switch apparatus for an electronic musical instrument has first, second and third layers, and first and second switches. The second layer has elasticity and is separated from the first layer. The third layer has elasticity and is inserted between the first and second layers at a distance therefrom. The first switch consists of conductors respectively formed on opposite surfaces of the second and third layers. The second switch consists of conductors respectively formed on opposite surfaces of the first and third layers. The second and third layers are sequentially urged and deformed by an actuator interlocked with key depression. The first and second switches are sequentially closed. A time requred for closing the first switch is different from that for closing the second switch. The closure time difference corresponds to a key depression speed, which is used to generate a signal corresponding to the depression speed, and a musical tone signal corresponding to the depression speed.
    • 一种用于电子乐器的键盘开关装置具有第一,第二和第三层以及第一和第二开关。 第二层具有弹性并与第一层分离。 第三层具有弹性,并且与第一层和第二层之间的距离插入第一层和第二层之间。 第一开关由分别形成在第二层和第三层的相对表面上的导体组成。 第二开关由分别形成在第一和第三层的相对表面上的导体组成。 第二和第三层通过与钥匙凹陷部互锁的致动器顺序地推动和变形。 第一和第二开关依次关闭。 关闭第一个开关所需的时间与关闭第二个开关的时间不同。 关闭时间差对应于用于产生对应于踩踏速度的信号的键按压速度和对应于踩踏速度的乐音信号。