Title:
【発明の名称】油圧式テンショナ装置
Document Type and Number:
Japanese Patent JP3054068
Kind Code:
B2
Abstract:
A hydraulic tensioner device, which is compact in size, simple in construction and can be manufactured efficiently, has a shoe (4) for applying a tensioning force to a chain (3) or belt. The shoe has a plunger (5) which has a hollow portion (6) in which a valve block (7), a spring (9) and an inner sleeve (10) are slidably disposed. The upper end of the inner sleeve is supported within a cylindrical chamber (2) in a tensioner body (1). The tensioner body has an oil passage (11) communicating with an internal space of the inner sleeve. The bottom surface (6A) of the hollow portion and the valve block jointly define therebetween a high pressure chamber (8) filled with an oil supplied from the internal space of the inner sleeve via a check valve (7A) in the valve block. When the plunger is forced upwardly, the oil in the high pressure chamber is discharged through a clearance (S) of a small cross-sectional area defined between the respective outside surfaces of the valve block and the inner sleeve and the inside surface of the hollow portion of the plunger. By virtue of a flow resistance created during the passage of the oil through the clearance, an impact force applied from a chain (3) to a shoe (4) is absorbed.
Inventors:
Moichi Fukuda
Yutaka Hayafune
Kozo Inoue
Yasushi Suzuki
Yutaka Hayafune
Kozo Inoue
Yasushi Suzuki
Application Number:
JP28065495A
Publication Date:
June 19, 2000
Filing Date:
October 27, 1995
Export Citation:
Assignee:
Tsubakimoto Chain Co., Ltd.
International Classes:
F16H7/08; (IPC1-7): F16H7/08
Domestic Patent References:
| JP6240355U | ||||
| JP665655U |
Attorney, Agent or Firm:
Takashi Tsuno (4 outside)