公开(公告)号：US20010041635A1

公开(公告)日：2001-11-15

申请号：US09867188

申请日：2001-05-29

Applicant: NHK Spring Co., Ltd.

Inventor： Kazuo Ishii ,  Shigemasa Takahashi ,  Tanehira Amano ,  Takao Kobayashi ,  Kenjiro Kawanabe

IPC: F16H007/08 ,  F16H007/12 ,  F16H007/22

CPC classification number: F16H7/0831 ,  F16H7/08 ,  F16H2007/081 ,  F16H2007/0857

Abstract: A tensioner comprises shaft members that mate with each other by means of thread portions. A first shaft member is rotatable with respect to a casing and is restrained from moving in its axial direction. A second shaft member, which is restrained from rotating with respect to the casing, is movable in its axial direction. A torsion spring applies torque in a first direction to the first shaft member. A torque switching member, which can switch frictional torque in association with the rotation of the first shaft member, is provided between the first shaft member and the casing.

Abstract translation: 张紧器包括通过螺纹部分彼此配合的轴构件。 第一轴构件相对于壳体可旋转并且被限制在其轴向方向上移动。 被限制相对于壳体旋转的第二轴构件可在其轴向方向上移动。 扭转弹簧沿第一方向向第一轴构件施加扭矩。 在第一轴构件和壳体之间设置有能够切换与第一轴构件的旋转相关的摩擦力矩的转矩切换构件。