Title:
LINEAR MOTION MECHANISM
Document Type and Number:
WIPO Patent Application WO/2018/159238
Kind Code:
A1
Abstract:
Provided is a linear motion mechanism that can convert rotational motion into liner motion by a motor alone, and can restrain increasing size of the overall device. Specifically, a motor (1) is provided with: a casing (11); and a rotary shaft (12) that protrudes outward from the casing (11). A male screw is formed in the outer peripheral surface of the rotary shaft (12). A guide member (2) is provided with a guide surface (21) that is configured to extend in the axial direction of the rotary shaft (12) but not to move in the rotational direction of the rotary shaft (12). A linear motion member (3) is provided with a female screw (311) that is to be screwed together with the male screw (121), and an abutment surface (312) that is arranged opposite to the guide surface (21). The abutment surface (312) prevents rotation of the linear motion member (3) in the rotational direction of the rotary shaft (12) by abutting against the guide surface (21).
Inventors:
SUGURO HIROSHIGE (JP)
OHKAWA TAKANORI (JP)
KODAIRA OSAMU (JP)
OHKAWA TAKANORI (JP)
KODAIRA OSAMU (JP)
Application Number:
PCT/JP2018/004142
Publication Date:
September 07, 2018
Filing Date:
February 07, 2018
Export Citation:
Assignee:
NIDEC SANKYO CORP (JP)
International Classes:
H02K7/06; F16H25/20
Foreign References:
| JPS5772757U | 1982-05-04 | |||
| JPH04317537A | 1992-11-09 | |||
| JP3029381U | 1996-09-27 | |||
| JP2015220995A | 2015-12-07 | |||
| JPS57154269U | 1982-09-28 | |||
| JPH11168853A | 1999-06-22 | |||
| JP2001128413A | 2001-05-11 |
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