Title:
CYLINDER DEVICE
Document Type and Number:
WIPO Patent Application WO/2016/084657
Kind Code:
A1
Abstract:
The lock mechanism of a cylinder device is provided with: an engagement member (83) provided to either a cylinder (10) or a rod (12)in a protrudable manner; a cylindrical lock guide (85) provided to the other of the cylinder (10) and the rod (12) so as to be rotatable and so as to be prevented from moving in the axial direction; an engagement recess (123) provided in a facing surface (121) of the lock guide (85) and allowing the engagement member (83) to engage therewith; a rotation restriction mechanism (133) for restricting, during the movement of the rod (12) in the direction of extension thereof and while the engagement member (83) and the engagement recess (123) match each other in the circumferential direction, the rotation of the lock guide (85) from an axial position where the engagement member (83) is in contact with the one axial end side of the lock guide (85) to an axial position where the engagement member (83) engages with the engagement recess (123); and a helical groove (141) engaging with the engagement member (83) and helically formed in the facing surface (121) so as to extend from a position closer to the other axial end side than the engagement recess (123) to the one axial end side while avoiding the engagement recess (123) in the circumferential direction.
Inventors:
SUZUKI JUNKO (JP)
TAKAIWA SATOSHI (JP)
TAKAIWA SATOSHI (JP)
Application Number:
PCT/JP2015/082278
Publication Date:
June 02, 2016
Filing Date:
November 17, 2015
Export Citation:
Assignee:
HITACHI AUTOMOTIVE SYSTEMS LTD (JP)
International Classes:
F16F9/00; F16F9/56
Foreign References:
| JP2005147402A | 2005-06-09 | |||
| JPH02113252A | 1990-04-25 |
Attorney, Agent or Firm:
SHIGA Masatake (JP)
Masatake Shiga (JP)
Masatake Shiga (JP)
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