Title:
HYDRAULIC CYLINDER
Document Type and Number:
WIPO Patent Application WO/2022/172846
Kind Code:
A1
Abstract:
A hydraulic cylinder (100) that comprises: a cylinder head (40) that closes an end part opening part of a cylinder tube (10) and has formed therein an insertion hole (41) through which a piston rod (30) is inserted; a bearing (55) that is provided to the cylinder head (40) and slidably supports the piston rod (30); and a rod-side chamber (11) that is formed between the cylinder head (40) and a piston (20). The cylinder head (40) has a bearing accommodation groove (51) that is formed in the inner circumferential surface of the insertion hole (41) and accommodates the bearing (55). The bearing accommodation groove (51) has: a groove bottom part (511) that is abutted by the outer circumferential surface of the bearing (55); and a retaining wall (512) that keeps the bearing (55) from slipping onto the rod-side chamber (11) side. The height (h1) of the retaining wall (512) is greater than the clearance (c1) between the bearing (55) and the piston rod (30).
Inventors:
TAKAHASHI YUSUKE (JP)
KOBAYASHI TOSHIO (JP)
KOBAYASHI TOSHIO (JP)
Application Number:
PCT/JP2022/004181
Publication Date:
August 18, 2022
Filing Date:
February 03, 2022
Export Citation:
Assignee:
KYB CORP (JP)
International Classes:
F15B15/14
Foreign References:
| JP2013199950A | 2013-10-03 | |||
| JP2019158068A | 2019-09-19 |
Attorney, Agent or Firm:
GOTOH & PARTNERS (JP)
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