公开(公告)号：US11143274B2

公开(公告)日：2021-10-12

申请号：US16268735

申请日：2019-02-06

Applicant: TSUBAKIMOTO CHAIN CO.

Inventor： Yoji Sato

IPC: F16H7/08

Abstract: To provide a chain tensioner that can suppress oil leakage from a gap between a plunger bore and a plunger to achieve stable damping characteristics and that can avoid an increase in production cost, with a simple structure. The chain tensioner includes a packing member that is provided on an inner circumferential side of the plunger bore and that suppresses oil leakage from a cylindrical outer surface of the plunger. The plunger is provided with an oil leak passage that extends from an oil pressure chamber inside the plunger to the outside.

公开(公告)号：US11002343B2

公开(公告)日：2021-05-11

申请号：US16353199

申请日：2019-03-14

Applicant: TSUBAKIMOTO CHAIN CO.

Inventor： Yoji Sato

IPC: F16H7/08

Abstract: Provided is a tensioner capable of reducing a machining or mounting load and preventing leakage of oil from a surface for mounting a tensioner with a simple configuration. A tension body having a plunger-receiving hole into which a plunger is slidably inserted is configured to have a projection portion on a mounting surface that face a wall surface having an oil discharge hole of amounting target object. The projection portion is configured to be inserted into the oil discharge hole and to be continuously connected to the oil supply path formed in the tensioner body to form an oil passage.

公开(公告)号：US20190257389A1

公开(公告)日：2019-08-22

申请号：US16268735

申请日：2019-02-06

Applicant: TSUBAKIMOTO CHAIN CO.

Inventor： Yoji Sato

IPC: F16H7/08 ,  F15B15/14

Abstract: To provide a chain tensioner that can suppress oil leakage from a gap between a plunger bore and a plunger to achieve stable damping characteristics and that can avoid an increase in production cost, with a simple structure. The chain tensioner includes a packing member that is provided on an inner circumferential side of the plunger bore and that suppresses oil leakage from a cylindrical outer surface of the plunger. The plunger is provided with an oil leak passage that extends from an oil pressure chamber inside the plunger to the outside.