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    • 2. 发明授权
    • Safety switch
    • 安全开关
    • US09064656B2
    • 2015-06-23
    • US13497030
    • 2010-06-16
    • Norifumi ObataEtsurou KomoriTakeo Yasui
    • Norifumi ObataEtsurou KomoriTakeo Yasui
    • H01H9/20H01H27/00H01H3/42H01H9/28H01H13/60
    • H01H27/002H01H3/42H01H9/286H01H13/60
    • A safety switch is improved by the feature of staying in an open position in the event of breakage of a working rod or breakage or dropout of an operation portion and having a simple structure facilitating size reduction. Even if a rotary shaft is released from a supported state in an operation portion because an operating force of an operation or the number of operations of extracting an actuator from the operation portion exceeds a breakage tolerance, a working rod is permitted to move in an urging direction of a coil spring and is assuredly moved to the operation portion. Therefore, a switch can be assuredly set to an open position and, hence, the safety switch can achieve the safety improvement.
    • 通过在工作棒断裂或操作部分断裂或脱落的情况下保持在打开位置并且具有便于尺寸减小的简单结构的特征来改进安全开关。 即使旋转轴从操作部的支撑状态被释放,因为操作的操作力或从操作部提取致动器的操作次数超过了断裂公差,所以允许工作杆以推动力移动 螺旋弹簧的方向被确定地移动到操作部。 因此,可以将开关确定地设定为打开位置,因此安全开关可以实现安全性的改善。
    • 5. 发明授权
    • Pushbutton switch
    • 按钮开关
    • US5508485A
    • 1996-04-16
    • US373784
    • 1995-01-17
    • Kikuyoshi Nishikawa
    • Kikuyoshi Nishikawa
    • H01H13/60H01H23/16H01H13/42
    • H01H13/60H01H23/16
    • A pushbutton switch is provided comprising a pushbutton having its lower portion inserted in a pushbutton housing section and being formed in its lower end with a pin accommodating hole; a pin having its upper end portion resiliently held in the pin accommodating hole by a coil spring; and a movable contact support having a movable contact piece therein and held in a switch housing section for seesaw motions by the lower end of the pin, whereby electric connection of the common contact is switched between two fixed contacts. A spring retainer plate to which the lower end of the coil spring is fixed is housed in the switch housing section for vertically upward and downward sliding movements. The spring retainer plate is formed at its opposite ends with legs depending therefrom for always maintaining the posture of the spring retainer plate parallel to the bottom panel. A switching member is interposed between the undersurface of the spring retainer plate and the top surface of the movable contact support so as to transmit the resilient force of the coil spring from the spring retainer plate to the movable contact support through the switching member to thereby hold the tilt of the movable contact support in a "bistable" manner.
    • 提供一种按钮开关,包括按钮,其下部插入按钮容纳部分中并且在其下端形成有销的容纳孔; 销的上端部通过螺旋弹簧弹性地保持在销容纳孔中; 以及可动触头支架,其中具有可动接触件并保持在开关壳体部分中,用于由销的下端进行跷跷板运动,从而在两个固定触点之间切换公共触点的电连接。 固定有螺旋弹簧的下端的弹簧保持板被容纳在开关容纳部中,用于垂直向上和向下的滑动。 弹簧保持板在其相对端部处形成有与其相对的腿部,以始终保持弹簧保持板的姿态平行于底板。 切换构件设置在弹簧保持板的下表面和可动触头支架的上表面之间,以便通过开关构件将弹簧的弹力从弹簧保持板传递到可动触点支架,从而保持 以“双稳态”方式使可动触点支撑件倾斜。