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    SCREW MOTION MECHANISM AND DAMPING APPARATUS USING SAME
    2.
    发明公开
    SCREW MOTION MECHANISM AND DAMPING APPARATUS USING SAME 审中-公开
    新加坡国立卫生研究院

    公开(公告)号：EP2657573A1

    公开(公告)日：2013-10-30

    申请号：EP11850403.4

    申请日：2011-10-20

    申请人： THK Co., Ltd. ,  Aseismic Devices Co., Ltd

    发明人： WATANABE, Yoshihito ,  KIDA , Hidenori ,  NAKAMINAMI, Shigeki ,  TANAKA, Hisaya

    IPC分类号： F16H25/20 ,  F16C11/06 ,  F16C11/10 ,  F16F7/04 ,  F16F9/12 ,  F16F15/02 ,  F16F15/023 ,  F16H25/22 ,  F16H25/24

    CPC分类号： F16H25/12 ,  F16C11/06 ,  F16C11/0614 ,  F16C29/0688 ,  F16F7/1022 ,  F16F9/12 ,  F16F2232/06 ,  F16H25/2021 ,  F16H25/2025 ,  F16H57/045 ,  F16H57/0497 ,  F16H2025/2037 ,  Y10T403/32065

    摘要： Provided is a screw motion mechanism capable of facilitating connection of an axial end of a threaded shaft with respect to a structural body while preventing a rotation of the threaded shaft, and capable of preventing application of an excessive torque to a nut member and the threaded shaft and preventing damage on those members. The screw motion mechanism includes: a threaded shaft (30) having an outer peripheral surface provided with a helical thread groove, the threaded shaft (30) having at least one axial end coupled to a first structural body; a nut member (40) held in a rotatable manner with respect to a second structural body which is movable in an axial direction of the threaded shaft with respect to the first structural body, the nut member (40) being threadedly engaged with the threaded shaft; and a spherical joint (32) for coupling the at least one axial end of the threaded shaft (30) to the first structural body, the spherical joint (32) including: a spherical portion (33, 61); and a sphere receiving portion (36, 60) for housing the spherical portion. When assuming an axial force applied to the threaded shaft (30) as a variable, a line of a rotational torque intersects with a line of a sliding torque in a graph, and the sliding torque exceeds the rotational torque under an initial state in which the axial force is not applied to the threaded shaft (30).

    摘要翻译： 提供了一种能够有助于螺纹轴的轴向端部相对于结构体连接的螺杆运动机构，同时防止螺纹轴的旋转，并且能够防止对螺母构件和螺纹轴施加过大的扭矩 并防止对这些成员造成损害。 螺杆运动机构包括：螺纹轴（30），其具有设置有螺旋螺纹槽的外周表面，所述螺纹轴（30）具有联接到第一结构体的至少一个轴向端; 螺母构件（40）相对于可相对于第一结构体在螺纹轴的轴向方向上可移动的第二结构体以可旋转的方式保持，所述螺母构件（40）与螺纹轴螺纹接合 ; 以及用于将所述螺纹轴（30）的所述至少一个轴向端部联接到所述第一结构体的球形接头（32），所述球形接头（32）包括：球形部分（33,61）; 以及用于容纳球形部分的球体接收部分（36,60）。 当以螺纹轴（30）施加作为可变的轴向力时，旋转扭矩的线与曲线图中的滑动扭矩的线相交，并且在初始状态下滑动扭矩超过旋转扭矩，其中， 轴向力不施加到螺纹轴（30）。