公开(公告)号：US20150082926A1

公开(公告)日：2015-03-26

申请号：US14487380

申请日：2014-09-16

Applicant: MITUTOYO CORPORATION

Inventor： Youhei ONODERA ,  Hideki SHINDO ,  Naoki IZUMI

IPC: F16H25/12 ,  G01B5/00 ,  F16D13/10

CPC classification number: F16H25/12 ,  F16D13/10 ,  F16H19/025 ,  G01B5/0002 ,  G01B5/0004 ,  G01B5/20 ,  Y10T74/18696

Abstract: A traction nut has twist rollers pivotally supported so as to be rotatable in a state of defining an inclination angle with respect to an axis of a drive shaft, the inclination angle being equivalent to a lead angle; an open/close lever provided to switch between a friction-contact state and a disengaged state of the traction nut relative to the drive shaft; and a spring generating a biasing force such that the traction nut is brought into friction-contact with the drive shaft. In response to user operation, the open/close lever puts the traction nut in the disengaged state against the biasing force of the spring. When the user releases the open/close lever, the traction nut returns to the friction-contact state due to the biasing force of the spring.

Abstract translation: 牵引螺母具有可旋转地支撑的扭转辊，以便能够相对于驱动轴的轴线限定倾斜角度的状态旋转，该倾斜角度等于导程角; 一个打开/关闭杆，用于在摩擦接触状态和牵引螺母相对于驱动轴的脱离状态之间切换; 以及产生偏压力的弹簧，使得牵引螺母与驱动轴摩擦接触。 响应于用户操作，打开/关闭杆克服弹簧的偏置力使牵引螺母处于分离状态。 当用户释放打开/关闭杆时，牵引螺母由于弹簧的偏置力而返回到摩擦接触状态。