Title:
FEED SCREW MECHANISM AND ACTUATOR
Document Type and Number:
WIPO Patent Application WO/2020/217346
Kind Code:
A1
Abstract:
This feed screw mechanism (50) comprises a rotatable female screw part (52) and a male screw part (51), the rotation of which is limited when being screwed into the female screw part (52) and that moves linearly in the axial direction due to the rotation of the female screw part (52). At least one of the female screw part (52) or the male screw part (51) is configured as a multiple thread screw, and in at least one of the female screw part (52) configured as a multiple thread screw or the male screw part (51) configured as a multiple thread screw, a first pitch between a first screw ridge and a second screw ridge adjacent to each other in the axial direction differs from a second pitch between the second screw ridge and a third screw ridge adjacent to each other in the axial direction.
Inventors:
NAKASUJI ATSUSHI (JP)
Application Number:
PCT/JP2019/017464
Publication Date:
October 29, 2020
Filing Date:
April 24, 2019
Export Citation:
Assignee:
MITSUBISHI ELECTRIC CORP (JP)
International Classes:
F16H25/24
Domestic Patent References:
| WO2005038301A1 | 2005-04-28 |
Foreign References:
| JP2004055043A | 2004-02-19 | |||
| JP2018059494A | 2018-04-12 | |||
| JP2003148107A | 2003-05-21 | |||
| JPS6345253U | 1988-03-26 |
Attorney, Agent or Firm:
TAZAWA, Hideaki et al. (JP)
Download PDF: