Patent ID: 9726238
Date: 2017-08-08
CPC Classifications: F16D

Claim:
1. An overload limiting device comprising: a rolling element; a rotatable first rotation member having a housing portion that houses the rolling element; a rotatable second rotation member having an engagement recess portion that engages detachably with the rolling element housed in the housing portion, the second rotation member being arranged opposing the first rotation member; a biasing member that biases the rolling element toward the engagement recess portion; and an adjustment nut that adjusts a biasing force of the biasing member by moving in a rotation axis direction of the first rotation member, the adjustment nut being provided to the first rotation member, the first rotation member including a scale showing a position of the adjustment nut in the rotation axis direction, wherein a scale line configuring the scale is formed in a circumferential direction on a circumferential surface of the first rotation member, and a plurality of the scale lines are provided aligned at equal intervals in the rotation axis direction, wherein the biasing member is in contact with a tip end portion in the rotation axis direction of the adjustment nut, and a rear end portion in the rotation axis direction of the adjustment nut is positioned in a position corresponding to the scale, and wherein the rear end portion of the adjustment nut is provided with a notch having a notch length longer than a scale spacing of the scale in the rotation axis direction.