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1. 发明授权

US5702318A Chain tensioning device 失效
标题翻译：链条张紧装置
公开(公告)号：US5702318A
公开(公告)日：1997-12-30
申请号：US611005
申请日：1996-03-05
申请人： Hiroshi Hayafune , Atsushi Kumakura
发明人： Hiroshi Hayafune , Atsushi Kumakura
IPC分类号： F02B67/06 , F16H7/08 , F16H7/18
CPC分类号： F16H7/18 , F02B67/06 , F16H7/08 , F02B2275/18 , F16H2007/0872 , F16H2007/0874
摘要： A chain tensioning device includes a pair of levers interconnected and fixed at one end to a rotatably supported base and extending along the chain to be tensioned and a tensioner connected to the other end of one of the pair of levers. One of the levers is disposed on the end side of the chain to be tensioned as viewed from the rotatably supported base and has a convexly curved surface touching internally the chain, and a shoe attached to the convexly curved surface. The other of the levers is disposed on the departure side of the chain as viewed from the base and has a convexly curved surface touching externally the chain, and a shoe attached to the convexly curved surface. A projection on a side of the one of the levers opposite to the shoe for receiving a thrusting force from the tensioner 20 and applying such thrusting force to the interconnected levers.
摘要翻译：链条张紧装置包括一对杆，其一端互连并固定到可旋转地支撑的基部并沿着待张紧的链条延伸，并且张紧器连接到所述一对杆中的一个的另一端。其中一个杆被设置在从可旋转的支撑的基座观察的待张紧的链的端部侧上，并且具有在链内部接触的凸曲面，以及附接到凸曲面的鞋。杠杆的另一个设置在从基座观察的链条的离开侧，并且具有与链条外部接触的凸形弯曲表面，以及附接到凸形曲面的鞋。在与鞋相对的一个杆的一侧上的突起，用于接收来自张紧器20的推力并将这种推力施加到相互连接的杠杆。

2. 发明授权

US6086497A Hydraulic tensioner having a plunger with a self-contained reservoir and high pressure chamber for buffering 失效
标题翻译：液压张紧器具有带独立储存器的柱塞和用于缓冲的高压室
公开(公告)号：US6086497A
公开(公告)日：2000-07-11
申请号：US742571
申请日：1996-10-28
申请人： Shigekazu Fukuda , Hiroshi Hayafune , Kozo Inoue , Tadasu Suzuki
发明人： Shigekazu Fukuda , Hiroshi Hayafune , Kozo Inoue , Tadasu Suzuki
IPC分类号： F16H7/08
CPC分类号： F16H7/0848 , F16H7/0836 , F16H2007/0812 , F16H2007/0859
摘要： 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.
摘要翻译：液压张紧装置的尺寸紧凑，结构简单并且可以有效地制造，具有用于向链条（3）或带施加张紧力的鞋（4）。该鞋具有一个具有中空部分（6）的柱塞（5），其中可滑动地设置有阀块（7），弹簧（9）和内套筒（10）。内套筒的上端支撑在张紧器主体（1）中的圆柱形腔室（2）内。张紧器主体具有与内套筒的内部空间连通的油路（11）。中空部分的底表面（6A）和阀块在它们之间共同限定了一个高压室（8），该高压室（8）填充有通过阀块中的止回阀（7A）从内套筒的内部空间供应的油。当柱塞被向上压力时，高压室中的油通过限定在阀块的相应外表面与内套筒之间的小横截面积的空隙（S）和中空部分的内表面排出柱塞的一部分。由于在油通过间隙期间产生的流动阻力，从链条（3）施加到鞋（4）的冲击力被吸收。

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