公开(公告)号：US20230349453A1

公开(公告)日：2023-11-02

申请号：US18026463

申请日：2021-10-20

Applicant: NSK LTD.

Inventor： Reona UMEI ,  Yasumi WATANABE ,  Yuji SHIMOMURA

IPC: F16H25/22 ,  F16H25/20 ,  F16H25/24

CPC classification number: F16H25/2204 ,  F16H25/2015 ,  F16H25/24 ,  B60T13/745 ,  F16H2025/2081

Abstract: A linear motion actuator has a ball screw device having a screw shaft, a nut, and a plurality of balls, a piston mounted on one end of the screw shaft, and a stroke limiting mechanism setting an operation starting point in time of the screw shaft toward a first direction pointed by the one end. The nut has one end face directed to the first direction and a protruding part protruding from the one end face.