Title:
CHAIN TENSIONER
Document Type and Number:
WIPO Patent Application WO/2023/276808
Kind Code:
A1
Abstract:
Provided is a chain tensioner in which a check valve (15) is loosely fitted at an end of a plunger (10) inserted into a cylinder (9) and a return spring (24) is built into a pressure chamber (17) so as to press the check valve (15) against a plunger (10), wherein a retaining ring (51) for elastically tightening the outer periphery of the plunger (10) is accommodated in a retaining ring accommodation groove (50), and in the outer periphery of the plunger (10), a retaining ring engagement groove (52) is formed at a position shifted from a lubrication groove (31) toward an end of the plunger (10) that projects from the cylinder (9).
Inventors:
ONIMARU KOUICHI (JP)
Application Number:
PCT/JP2022/024836
Publication Date:
January 05, 2023
Filing Date:
June 22, 2022
Export Citation:
Assignee:
NTN TOYO BEARING CO LTD (JP)
International Classes:
F16H7/08
Foreign References:
| JP2020153383A | 2020-09-24 | |||
| JP2010144895A | 2010-07-01 | |||
| JP2010255677A | 2010-11-11 | |||
| JP2019015362A | 2019-01-31 |
Attorney, Agent or Firm:
KAMADA Naoya et al. (JP)
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