| 摘要 |
PROBLEM TO BE SOLVED: To provide a linear drive device capable of restricting biting of a nut member into a helical groove of a revolving shaft even when a stopper for restricting a moving range of a nut member is installed.SOLUTION: A linear drive device 10 comprises: a rotary shaft 25 having a helical groove 250 formed at its outer peripheral surface; a nut member 30 engaged with the helical groove 250; and a stopper 11 for restricting a moving range toward one side L1 in an axial direction L of the nut member 30 on the rotary shaft 25 when the rotary shaft 25 is rotated in one direction R1. The stopper 11 is constituted by both a rotary shaft side salient 29 arranged at the rotary shaft 25 and a nut member side salient 39 arranged at the nut member 30 that is abutted against the rotary shaft side salient 29 in a direction around the axial line L.SELECTED DRAWING: Figure 2 |
