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Patent Searching and Data


Title:
LINEAR MOTION MECHANISM AND ELECTRIC ACTUATOR PROVIDED WITH SAME
Document Type and Number:
WIPO Patent Application WO/2019/194143
Kind Code:
A1
Abstract:
A linear motion mechanism 20 is accommodated within a housing 30 having an opening 30a and driven by an electric motor 10, causing a cylinder 60 movably and integrally linked to a ball screw nut 50 to be displaced in an axial direction. The linear motion mechanism 20 comprises a rotating shaft 16 which has a hollow part 16a and which is provided so as to be able to rotate relative to the housing 30 but unable to move in the axial direction, a ball screw shaft 40 accommodated in the hollow part 16a coaxially with the rotating shaft 16, and the ball screw nut 50 which is provided to be able to move in the axial direction and threaded over the ball screw shaft 40. The cylinder 60 is fitted by involute splines into the opening 30a, and is provided so as to be incapable of rotating relative to the housing 30.

Inventors:
MIYAWAKI Naoto
Application Number:
JP2019/014520
Publication Date:
October 10, 2019
Filing Date:
April 01, 2019
Export Citation:
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Assignee:
PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO., LTD. (1-61, Shiromi 2-chome Chuo-ku, Osaka-sh, Osaka 07, 〒5406207, JP)
International Classes:
F16H25/20; F16H25/22; F16H25/24; H02K7/06
Foreign References:
JP2014018007A2014-01-30
JP2013100921A2013-05-23
JP2011179583A2011-09-15
JPS57184744A1982-11-13
JPH04355644A1992-12-09
Attorney, Agent or Firm:
MAEDA & PARTNERS (Shin-Daibiru Bldg. 23F, 2-1 Dojimahama 1-chome, Kita-ku, Osaka-sh, Osaka 04, 〒5300004, JP)
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