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Patent Searching and Data


Title:
ELECTRIC LINEAR ACTUATOR AND ELECTRIC BRAKING DEVICE
Document Type and Number:
WIPO Patent Application WO/2016/186001
Kind Code:
A1
Abstract:
An outer ring member (21) is incorporated in a housing (20), and a rotary shaft (34) that is rotationally driven by an electric motor (24) is provided on the center axis of the outer ring member (21). A planetary roller (49) is incorporated between the rotary shaft (34) and the outer ring member (21). The planetary roller (49) is rotated and revolved by contact with the rotary shaft (34), and the outer ring member (21) is moved in the axial direction by way of spiral projections (57) provided on the inner circumference of the outer ring member (21) engaging with circumferential grooves (58) formed on the outer circumference of the planetary roller (49). The shaft end of a roller shaft (47) that rotatably supports the planetary roller (49) is supported, so as to move freely, in the radial direction by discs (41a, 41b) of a carrier (40), and the shaft end of the roller shaft (47) is biased radially inward by an elastic ring (50) that spans the shaft end so as to encompass the same. The roller shaft (47) is prevented from rotating by way of a roller shaft rotation stop means (54), thereby preventing the roller shaft (47) from rotating along with the planetary roller (49) that rotates and revolves when the planetary roller is rotating.

Inventors:
YAMASAKI TATSUYA (JP)
Application Number:
JP2016/064166
Publication Date:
November 24, 2016
Filing Date:
May 12, 2016
Export Citation:
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Assignee:
NTN TOYO BEARING CO LTD (JP)
International Classes:
F16H25/20; B60T13/74; F16D65/16; F16H19/02; F16D121/24; F16D125/40; F16D125/50
Foreign References:
JP2012175722A2012-09-10
JP2011074932A2011-04-14
JP2005170309A2005-06-30
JPS538473U1978-01-24
JPS5618148A1981-02-20
Attorney, Agent or Firm:
KAMADA Naoya et al. (JP)
้ŽŒ็”ฐ ็›ดไนŸ (JP)
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