公开(公告)号：US09970519B2

公开(公告)日：2018-05-15

申请号：US14932686

申请日：2015-11-04

Applicant: HIWIN TECHNOLOGIES CORP.

Inventor： Ming-Yao Lin ,  Yu-Hua Chen ,  Hui-Chen Chen ,  Tsung-Hsien Tsai

IPC: F16H25/22

CPC classification number: F16H25/2223 ,  F16H25/2219

Abstract: A circulation member positioning structure for a ball screw includes a nut and a circulation member. The nut has a threaded channel, a socket, and a positioning notch. The socket is provided on a wall of the threaded channel and the positioning notch is provided on a wall of socket. The circulation member has a circulation portion, a circulation track, and a positioning protrusion. The circulation portion is provided in the socket of the nut. The circulation track is distributed over one lateral of the circulation portion and connects with the threaded channel of the nut. The positioning protrusion is provided on an opposite lateral of the circulation portion for being engaged with the positioning notch of the nut. Thereby, the circulation member positioning structure helps to simplify the assembling work of the circulation member and to remain the nut small despite the insertion of the circulation member.