ELECTRIC LINEAR ACTUATOR AND ELECTRIC BRAKING DEVICE

WIPO Patent Application WO/2016/186001

A1

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.

YAMASAKI TATSUYA (JP)

PCT/JP2016/064166

November 24, 2016

May 12, 2016

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NTN TOYO BEARING CO LTD (JP)

F16H25/20; B60T13/74; F16D65/16; F16H19/02; F16D121/24; F16D125/40; F16D125/50

JP2012175722A	2012-09-10
JP2011074932A	2011-04-14
JP2005170309A	2005-06-30
JPS538473U	1978-01-24
JPS5618148A	1981-02-20

KAMADA Naoya et al. (JP)
鎌田 直也 (JP)

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