Drive the nut null Drive component which elastically has with the deformation possible component and mechanical safe feature, is used for the actuator device, and the said actuator device

摘要

PROBLEM TO BE SOLVED: To protect a driving mechanism of a power-driven gearshift by a simple and efficient method.;SOLUTION: This actuator device for the bicycle gearshift is provided with the driving mechanisms 101, 201, 301 driven by driving members 120, 220, 320 and driving a derailleur D of the gearshift. The mechanisms 101, 201, 301 are provided with members 30, 40 exposed to stress when shock is applied to the mechanisms 101, 201, 301, and the members 30, 40 can be elastically deformed when exposed to stress exceeding predetermined threshold value stress.;COPYRIGHT: (C)2005,JPO&NCIPI