公开(公告)号：US20250146539A1

公开(公告)日：2025-05-08

申请号：US18928320

申请日：2024-10-28

Applicant: TSUBAKIMOTO CHAIN CO.

Inventor： Fumiya Murase ,  Ryota Mase

IPC: F16D7/02

Abstract: To provide an overload protecting device with a simple structure and a low machining cost, capable of increasing a transmission torque, improving accuracy of an allowable torque to be set, and capable of continuous use even after an overload state, once it returns to a normal torque. A torque transmission mechanism for torque transmission, cam sliding surfaces 111, 121 of an inner ring 120 and an outer ring 110have cylindrical shapes, the torque transmission mechanism has a plurality of cams 130 provided in a circumferential direction between the cam sliding surfaces 111, 121 and urging means 140 for urging the plurality of cams 130 in a rotating direction thereof, and the cam 130 has a plurality of minimum radius parts and a plurality of maximum radius parts disposed alternately and formed having a rotationally symmetric shape to a rotation center thereof.