Title:
FLUID PRESSURE CYLINDER
Document Type and Number:
Japanese Patent JP2022122695
Kind Code:
A
Abstract:
To provide a fluid pressure cylinder which can prevent the come-off of a bearing by a simple structure.SOLUTION: A hydraulic cylinder comprises a cylinder head 40 which blocks an end part opening of a cylinder tube, and in which an insertion hole inserted with a piston rod 30 is formed, a bearing 55 arranged at the cylinder head 40, and slidably supporting the piston rod 30, and a rod-side chamber defined between the cylinder head 40 and a piston. The cylinder head 40 has a bearing accommodation groove 51 formed at an internal peripheral face of the insertion hole, and accommodated with the bearing 55. The bearing accommodation groove 51 has a groove bottom part 511 on which an external peripheral face of the bearing 55 abuts, and a retention wall 512 for regulating the come-off of the bearing 55 to the rod-side chamber side. A height h1 of the retention wall 512 is higher than a clearance c1 between the bearing 55 and the piston rod 30.SELECTED DRAWING: Figure 2
Inventors:
TAKAHASHI YUSUKE
KOBAYASHI TOSHIO
KOBAYASHI TOSHIO
Application Number:
JP2021020096A
Publication Date:
August 23, 2022
Filing Date:
February 10, 2021
Export Citation:
Assignee:
KYB CORP
International Classes:
F15B15/14
Attorney, Agent or Firm:
Goto Patent Office
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