Cylinder device

The cylinder device detects the output member's position in three stages using compressed gas passages and sealing members, addressing the challenge of miniaturization in existing detection mechanisms.

JP7876842B2Active Publication Date: 2026-06-22KOSMEK LTD (JP)
View PDF 4 Cites 0 Cited by

Patent Information

Authority / Receiving Office
JP · JP
Patent Type
Patents
Current Assignee / Owner
KOSMEK LTD (JP)
Filing Date
2022-09-30
Publication Date
2026-06-22

Smart Images

  • Figure 0007876842000001
    Figure 0007876842000001
  • Figure 0007876842000002
    Figure 0007876842000002
  • Figure 0007876842000003
    Figure 0007876842000003
Patent Text Reader

Abstract

To provide a cylinder device including a mechanism for detecting a position of an output stage on three stages by utilizing an outer periphery of a piston rod of the output member and an inner wall of a housing.SOLUTION: An A passage Ap in which a compressed gas is supplied and a B passage Bp in which atmospheric air is exhausted are provided in a housing 2. A projection 12a pushing down a seal member 11 and an annular valve member 10 in an accompanied manner is provided in a piston rod 3. On a hollow inner wall in the housing, there are provided a sliding surface region 13 having such an inner diameter that the seal member 11a is abutted and a seal function effectively works, a free insertion region 14 having such a large inner diameter that the seal function of the seal member 11a does not work at all, and a valve member region 18 which has a large inner diameter that the annular valve member 10 is vertically movable, in which the annular valve member 10 is stored while enclosing the upper side with a ring face 2d and which communicates to the B passage Bp.SELECTED DRAWING: Figure 1
Need to check novelty before this filing date? Find Prior Art

Citation Information

Patent Citations

  • JP2009190137A

  • JP2012101345A

  • JP2014240117A

  • JP2019215074A