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    • 51. 发明授权
    • Pushbutton cantilevered leaf spring contact switch assembly for keyboard type switch arrays
    • 键盘类型开关阵列的按钮式叶片弹簧触点开关组件
    • US3746816A
    • 1973-07-17
    • US3746816D
    • 1971-05-18
    • UNIVERSAL TECHNOLOGY
    • BRADY J
    • H01H13/70H01H13/80H01H13/66
    • H01H13/80H01H13/70H01H2201/002H01H2201/004H01H2203/054H01H2215/034H01H2217/012H01H2221/024H01H2223/03H01H2239/01H01H2239/026
    • A low profile electromechanical keyboard switch, displaying very low electrical bounce. The switch key top bears against a generally cylindrical plunger which has a depressed flat portion on its side engageable with a tactile ball biased by a spring nested in the switch housing. Upon application of a force to the key top which exceeds a threshold value, the tactile ball is displaced from the flat and over the shoulder defined between the depressed flat and the cylindrical portion of the plunger. Sudden, positive movement of the plunger against an underlying contact leaf ensues. The contact leaf is branched into multiple contact fingers, and arranged with respect to an underlying contact plate so that wiping contact occurs between fingers and plate. The switch housing is configured to carry sufficient diodes and resistors to assure full control and encoding functions in the keyboard in which such switch may be mounted.
    • 低调的机电键盘开关,显示非常低的电气反弹。 开关键顶靠在大致圆柱形的柱塞上,该柱塞在其侧面上具有凹陷的平坦部分,可与由嵌套在开关壳体中的弹簧偏置的触觉球接合。 在对键顶施加超过阈值的力时,触觉球从位于凹陷的平面和柱塞的圆柱形部分之间的平坦部分和肩膀上移位。 突然之后,柱塞抵抗下面的接触叶片的正运动。 接触叶片分支成多个接触指,并相对于下面的接触板布置,使得指状物和板之间发生擦拭接触。 开关壳体被配置为携带足够的二极管和电阻器,以确保可以安装这种开关的键盘中的完全控制和编码功能。