ACTUATOR, AND PARALLEL LINK MECHANISM AND ELONGATE MATERIAL BENDING DEVICE THAT USE THE SAME

WIPO Patent Application WO/2007/010819

A1

An actuator where the dimensions of an actuator installation section are reduced as much as possible to construct the device compact and mechanical rigidity (servo rigidity) of the actuator is enhanced. To achieve this, the actuator has a hydraulic cylinder and a trunnion universal joint. The trunnion universal joint has an installation shaft, a holding member, and a support member. The holding member is provided on the installation shaft so as to be rotatable about the shaft and projects in the direction of the axis of the installation shaft. The support member is supported in a space of the holding member so as to be swingable in the direction perpendicular to the direction of rotation of the holding member and supports the hydraulic cylinder.

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ICHIRYU KEN (JP)
SHIROYAMA TATSUYA (JP)
HORIUCHI RYOSUKE (JP)
HACHINOHE TAKU (JP)

PCT/JP2006/313963

January 25, 2007

July 13, 2006

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KIKUCHI SEISAKUSHO CO LTD (JP)
ICHIRYU KEN (JP)
SHIROYAMA TATSUYA (JP)
HORIUCHI RYOSUKE (JP)
HACHINOHE TAKU (JP)

F15B15/14; B21D7/08; F16H21/54

JP3083841B2	2000-09-04
JP2002346640A	2002-12-03
US4819496A	1989-04-11

SAKAI, Hajime et al. (9-15 Akasaka 1-chom, Minato-ku Tokyo, JP)

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