Title:
CYLINDER DEVICE
Document Type and Number:
WIPO Patent Application WO/2024/070173
Kind Code:
A1
Abstract:
Provided is a cylinder device provided with a mechanism for detecting, in three stages, the position of an output member by using the outer periphery of a piston rod of the output member, and the inner wall of a housing. A housing (2) is provided with an A passage (Ap) for supplying compressed gas, and a B passage (Bp) for discharge to the atmosphere. A piston rod (3) is provided with a projection (12a) that pulls and pushes down the seal member (11) together with an annular valve member (10). The hollow inner wall inside the housing is provided with: a sliding region (13) having an inner diameter such that a seal member (11a) makes contact therewith to effectively enable the seal function; a loose insertion region (14) having a great inner diameter such that the sealing function of the seal member (11a) does not work at all; and a valve member region (18) which has a great inner diameter such that the annular valve member (10) can move up/down, and which stores the annular valve member (10) while the upper side is surrounded by a ring surface (2d), the valve member region communicating with the B passage (Bp).
Inventors:
NAGAO TETSUYA (JP)
Application Number:
PCT/JP2023/027187
Publication Date:
April 04, 2024
Filing Date:
July 25, 2023
Export Citation:
Assignee:
KOSMEK LTD (JP)
International Classes:
F15B15/28; B23Q3/06
Foreign References:
| JP2014129864A | 2014-07-10 | |||
| JP2014240117A | 2014-12-25 | |||
| JP2019215074A | 2019-12-19 | |||
| JP2012166276A | 2012-09-06 |
Attorney, Agent or Firm:
KASEGUMA Tsuguhisa (JP)
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