公开(公告)号：US20050049093A1

公开(公告)日：2005-03-03

申请号：US10927281

申请日：2004-08-27

申请人： Seiji Sato ,  Tomoyoshi Izutsu ,  Satoshi Kitano ,  Hisashi Hayakawa

发明人： Seiji Sato ,  Tomoyoshi Izutsu ,  Satoshi Kitano ,  Hisashi Hayakawa

IPC分类号： F16B33/02 ,  F16H7/08 ,  F16H7/22

CPC分类号： F16H7/0836 ,  F16H2007/0806 ,  F16H2007/0812 ,  F16H2007/0853 ,  F16H2007/0855 ,  F16H2007/0859 ,  F16H2007/0878 ,  Y10T24/45534 ,  Y10T292/1043 ,  Y10T292/1063 ,  Y10T292/444

摘要： A chain tensioner includes a housing having a cylinder chamber. A plunger is slidably mounted in the cylinder chamber. A spring is mounted in the cylinder chamber to bias the plunger outwardly of the cylinder chamber. The plunger has a radially extending locking pin at its lower portion near its front end. The housing is formed with a pin hole extending substantially perpendicular to an axis of the cylinder chamber near the front end of the housing and under the cylinder chamber. The chain tensioner further includes a support pin inserted in the pin hole, and a locking lever supported on the support pin so as to be pivotable about the support pin. The locking lever can engage the locking pin when the plunger is sufficiently pushed into the cylinder chamber, thereby keeping the plunger pushed in the cylinder chamber.

摘要翻译： 链条张紧器包括具有缸室的壳体。 柱塞可滑动地安装在气缸室中。 弹簧安装在气缸室中，以将柱塞向气缸室向外偏压。 柱塞在其前端附近的下部具有径向延伸的锁定销。 壳体形成有一个销孔，该销孔基本上垂直于该缸室的轴线延伸，靠近该壳体的前端并在缸室下方。 链条张紧器还包括插入销孔中的支撑销和支撑在支撑销上以便可绕支撑销枢转的锁定杆。 当柱塞被充分地推入气缸室中时，锁定杆能够接合锁定销，从而保持柱塞推入气缸室。

公开(公告)号：US20080096707A1

公开(公告)日：2008-04-24

申请号：US10581681

申请日：2004-12-20

申请人： Seiji Sato ,  Tomoyoshi Izutsu ,  Satoshi Kitano ,  Hisashi Hayakawa

发明人： Seiji Sato ,  Tomoyoshi Izutsu ,  Satoshi Kitano ,  Hisashi Hayakawa

IPC分类号： F16H7/08

CPC分类号： F16H7/0836 ,  F16H2007/0806 ,  F16H2007/0812 ,  F16H2007/0853 ,  F16H2007/0855 ,  F16H2007/0859

摘要： A chain tensioner is provided which can prevent separation of the plunger. In a cylinder chamber 12 of the housing 11, a plunger 13 and a spring 15 that biases the plunger 13 outwardly are mounted. The housing 11 is provided with an oil supply passage 17 communicating with a pressure chamber 16 formed in the cylinder chamber behind the plunger 13. An axially elongated guide recess 31 is formed in the outer periphery of the plunger 13. The housing 11 is provided with a stopper pin 33 near the open end of the cylinder chamber. By abutting the rear end wall 31b of the guide recess 31, the stopper pin 33 prevents separation of the plunger 13 from the housing.

摘要翻译： 提供了可以防止柱塞分离的链条张紧器。 在壳体11的气缸室12中，安装有将柱塞13向外偏压的柱塞13和弹簧15。 壳体11设置有与柱塞13后面形成在气缸室中的压力室16连通的供油通道17.在柱塞13的外周形成有轴向细长的导向凹部31.壳体11设置有 靠近气缸室的开口端的止动销33。 通过将引导凹部31的后端壁31b抵接，止动销33阻止柱塞13与壳体分离。

公开(公告)号：US07527572B2

公开(公告)日：2009-05-05

申请号：US10927281

申请日：2004-08-27

申请人： Seiji Sato ,  Tomoyoshi Izutsu ,  Satoshi Kitano ,  Hisashi Hayakawa

发明人： Seiji Sato ,  Tomoyoshi Izutsu ,  Satoshi Kitano ,  Hisashi Hayakawa

IPC分类号： F16H7/08 ,  A41F1/00 ,  E05C3/02

CPC分类号： F16H7/0836 ,  F16H2007/0806 ,  F16H2007/0812 ,  F16H2007/0853 ,  F16H2007/0855 ,  F16H2007/0859 ,  F16H2007/0878 ,  Y10T24/45534 ,  Y10T292/1043 ,  Y10T292/1063 ,  Y10T292/444

摘要： A chain tensioner includes a housing having a cylinder chamber. A plunger is slidably mounted in the cylinder chamber. A spring is mounted in the cylinder chamber to bias the plunger outwardly of the cylinder chamber. The plunger has a radially extending locking pin at its lower portion near its front end. The housing is formed with a pin hole extending substantially perpendicular to an axis of the cylinder chamber near the front end of the housing and under the cylinder chamber. The chain tensioner further includes a support pin inserted in the pin hole, and a locking lever supported on the support pin so as to be pivotable about the support pin. The locking lever can engage the locking pin when the plunger is sufficiently pushed into the cylinder chamber, thereby keeping the plunger pushed in the cylinder chamber.

摘要翻译： 链条张紧器包括具有缸室的壳体。 柱塞可滑动地安装在气缸室中。 弹簧安装在气缸室中，以将柱塞向气缸室向外偏压。 柱塞在其前端附近的下部具有径向延伸的锁定销。 壳体形成有一个销孔，该销孔基本上垂直于该缸室的轴线延伸，靠近该壳体的前端并在缸室下方。 链条张紧器还包括插入销孔中的支撑销和支撑在支撑销上以便可绕支撑销枢转的锁定杆。 当柱塞被充分地推入气缸室中时，锁定杆能够接合锁定销，从而保持柱塞推入气缸室。

公开(公告)号：US07775921B2

公开(公告)日：2010-08-17

申请号：US10494019

申请日：2002-11-01

申请人： Tomoyoshi Izutsu ,  Seiji Sato ,  Hisashi Hayakawa

发明人： Tomoyoshi Izutsu ,  Seiji Sato ,  Hisashi Hayakawa

IPC分类号： F16H7/22

CPC分类号： F16H7/0848 ,  F16H2007/0806 ,  F16H2007/0812 ,  F16H2007/0853 ,  F16H2007/0855 ,  F16H2007/0859

摘要： A plunger 4 and a spring 6 biasing the plunger 4 outwardly are mounted in a cylinder chamber 2 formed in a housing 1. The housing 1 is provided with an oil supply passage 8 communicating with a pressure chamber 7 formed in the back of the plunger 4. The housing 1 has an outer diameter that is substantially constant over the entire axial length, so that such housings can be mass-produced by pressing. It is thus possible to lower the cost of the chain tensioner.

摘要翻译： 柱塞4和弹簧6向外偏压柱塞4，安装在形成在壳体1中的气缸室2中。壳体1设置有与形成在柱塞4后部的压力室7连通的供油通道8 壳体1具有在整个轴向长度上基本上恒定的外径，从而可以通过按压大量生产这样的壳体。 因此可以降低链条张紧器的成本。

公开(公告)号：US07677999B2

公开(公告)日：2010-03-16

申请号：US11247254

申请日：2005-10-12

申请人： Seiji Sato ,  Satoshi Kitano ,  Hisashi Hayakawa

发明人： Seiji Sato ,  Satoshi Kitano ,  Hisashi Hayakawa

IPC分类号： F16H7/08 ,  F16H7/22

CPC分类号： F16H7/0848 ,  F16H2007/0806 ,  F16H2007/0812 ,  F16H2007/0853 ,  F16H2007/0855 ,  F16H2007/0859 ,  F16H2007/0878

摘要： A chain tensioner includes a housing defining a cylinder chamber, and a plunger having a small-diameter end and a spring both mounted in the cylinder chamber. A register ring is fitted in a ring-receiving groove formed in the inner periphery of the cylinder chamber near its open end. A plurality of annular grooves are formed in the outer periphery of the plunger so as to be axially spaced from each other at equal intervals. The register ring is adapted to be press-fitted in one of the annular grooves. With the register ring trapped between an engaging surface of a first annular groove which is one of the annular grooves located nearest to the front end of the plunger and a locking surface of the ring-receiving groove, an outer cylindrical surface of the plunger extending forwardly from the first annular groove has its front portion supported by an inner cylindrical surface of the cylinder chamber extending forwardly from the ring-receiving groove.

摘要翻译： 链条张紧器包括限定气缸室的壳体和具有安装在气缸室中的小直径端和弹簧的柱塞。 定位环安装在形成在气缸室的内周的靠近其开口端的环形容纳槽中。 在柱塞的外周形成有多个环形槽，以相等的间隔彼此轴向间隔开。 定位环适于压配合在一个环形槽中。 在第一环形槽的接合表面之间的定位环被捕获在位于最接近柱塞的前端的环形槽中的一个和接纳环的锁定表面之间的柱塞的外圆柱表面向前延伸 该第一环形槽的前部由从环形容纳槽向前延伸的气缸室的内圆柱表面支撑。

公开(公告)号：US07775923B2

公开(公告)日：2010-08-17

申请号：US11167141

申请日：2005-06-28

申请人： Seiji Sato ,  Satoshi Kitano ,  Hisashi Hayakawa

发明人： Seiji Sato ,  Satoshi Kitano ,  Hisashi Hayakawa

IPC分类号： F16H7/08

CPC分类号： F16H7/0836 ,  F16H2007/0806 ,  F16H2007/0814 ,  F16H2007/0853 ,  F16H2007/0855 ,  F16H2007/0859

摘要： A chain tensioner for use with a chain of a vehicle engine, includes a housing and a plunger slidably mounted in a cylinder chamber formed in the housing. The plunger is biased outwardly by a return spring mounted in a pressure chamber defined in the cylinder chamber by the plunger. A check valve is provided in the cylinder chamber to prevent backflow of hydraulic oil in the pressure chamber. A relief valve, provided in the plunger, opens above a relief pressure, thereby discharging hydraulic oil in the pressure chamber. An oil leakage clearance is defined between the plunger and the inner wall of the cylinder chamber. The relief pressure and the oil leakage clearance dimension are determined such that the tension in the chain is kept at such a level that vibrations of the chain are minimum at any temperature of hydraulic oil and at any engine revolution speed.

摘要翻译： 用于与车辆发动机链条一起使用的链条张紧器包括可滑动地安装在形成于壳体中的气缸室中的壳体和柱塞。 柱塞通过安装在由柱塞限定在气缸室中的压力室中的复位弹簧向外偏压。 在气缸室中设置止回阀，以防止压力室中的液压油回流。 设置在柱塞中的安全阀在溢流压力以上打开，从而排出压力室中的液压油。 在柱塞和气缸室的内壁之间限定了漏油间隙。 确定安全压力和漏油间隙尺寸，使得链条中的张力保持在液压油的任何温度和任何发动机转速下链条的振动最小的水平。

公开(公告)号：US20080280711A1

公开(公告)日：2008-11-13

申请号：US10582087

申请日：2004-12-20

申请人： Seiji Sato ,  Izutsu Tomoyoshi ,  Satoshi Kitano ,  Hisashi Hayakawa

发明人： Seiji Sato ,  Izutsu Tomoyoshi ,  Satoshi Kitano ,  Hisashi Hayakawa

IPC分类号： F16H7/08

CPC分类号： F16H7/0836 ,  F16H2007/0812 ,  F16H2007/0846 ,  F16H2007/0853 ,  F16H2007/0855 ,  F16H2007/0859

摘要： A chain tensioner is provided which can prevent separation of the plunger.In a cylinder chamber 12 of the housing 11, a plunger 13 and a spring 15 that biases the plunger 13 outwardly are mounted. The housing 11 is provided with an oil supply passage 17 communicating with a pressure chamber 16 formed in the cylinder chamber behind the plunger 13. A ring fitting groove 30 is formed in the outer periphery of the plunger 13 near its rear end. An elastic ring 31 is received in the ring fitting groove 30 in a radially compressed state. An engaging groove 32 is formed in the inner periphery of the cylinder 12 near its open end. By engaging the elastic ring 31 partially in the engaging groove 32 and partially in the ring fitting groove 30, it is possible to prevent separation of the plunger 13.

摘要翻译： 提供了可以防止柱塞分离的链条张紧器。 在壳体11的气缸室12中，安装有将柱塞13向外偏压的柱塞13和弹簧15。 壳体11设置有与形成在柱塞13后面的气缸室中的压力室16连通的供油通道17。 在其后端附近的柱塞13的外周形成环形配合槽30。 弹性环31以径向压缩状态容纳在环形装配槽30中。 接合槽32形成在气缸12的内周的靠近其开口端。 通过将弹性环31部分地接合在接合槽32中并且部分地接合在环形装配槽30中，可以防止柱塞13的分离。

公开(公告)号：US20080261736A1

公开(公告)日：2008-10-23

申请号：US11892880

申请日：2007-08-28

申请人： Kouichi Onimaru ,  Seiji Sato ,  Satoshi Kitano ,  Yoshiaki Ryouno ,  Hisashi Hayakawa

发明人： Kouichi Onimaru ,  Seiji Sato ,  Satoshi Kitano ,  Yoshiaki Ryouno ,  Hisashi Hayakawa

IPC分类号： F16H7/08

CPC分类号： F16H7/0848 ,  F16H2007/0806 ,  F16H2007/0812 ,  F16H2007/0857 ,  F16H2007/0859

摘要： A stepped set groove having shallow and deep portions is formed in the inner periphery of a cylinder chamber formed in a housing of a chain tensioner near its open end. A radially and elastically deformable set ring having circumferentially separated ends is received in the set groove in a radially compressed state. The set ring has at the respective ends thereof a pair of grip portions which are received in a cutout formed in housing at its front end. By engaging the set ring in an engaging groove formed in the outer periphery of the plunger near its front end and the shallow portion, it is possible to keep the plunger pushed into the cylinder chamber. In this state, the chain tensioner is mounted in position. One of the grip portions is brought into abutment with one of the circumferentially opposed end walls of the cutout to prevent the plunger from rotating about its axis in such a direction that the axial gap between an internal thread of the plunger and an external thread of a screw rod inserted in the plunger disappears. Thus, it is possible to keep the axial gap larger than the axial distance by which the plunger has to be moved to move the set ring from the shallow portion into the deep portion. This makes it possible to disengage the set ring from the engaging groove by pushing the plunger into the cylinder chamber.

摘要翻译： 在靠近开口端的链式张紧器的壳体中形成的气缸室的内周形成有浅部和深部的台阶式设置槽。 具有周向分开的端部的径向和可弹性变形的固定环以径向压缩状态容纳在所述固定槽中。 固定环在其各自的端部处具有一对把手部分，其被容纳在其前端处形成在壳体中的切口中。 通过将固定环接合在靠近其前端和浅部的柱塞的外周形成的接合槽中，可以将柱塞保持在气缸室中。 在这种状态下，链条张紧器安装就位。 把手部分中的一个与切口的周向相对的端壁中的一个相接触，以防止柱塞绕其轴线旋转，使得柱塞的内螺纹和内螺纹之间的轴向间隙 插入柱塞的螺杆消失。 因此，可以保持轴向间隙大于柱塞必须移动的轴向距离，从而将固定环从浅部移动到深部。 这使得可以通过将柱塞推入气缸室来将固定环与接合槽分离。

公开(公告)号：US20060094548A1

公开(公告)日：2006-05-04

申请号：US11247254

申请日：2005-10-12

申请人： Seiji Sato ,  Satoshi Kitano ,  Hisashi Hayakawa

发明人： Seiji Sato ,  Satoshi Kitano ,  Hisashi Hayakawa

IPC分类号： F16H7/08 ,  F16H7/22

CPC分类号： F16H7/0848 ,  F16H2007/0806 ,  F16H2007/0812 ,  F16H2007/0853 ,  F16H2007/0855 ,  F16H2007/0859 ,  F16H2007/0878

摘要： A chain tensioner includes a housing defining a cylinder chamber, and a plunger having a small-diameter end and a spring both mounted in the cylinder chamber. A register ring is fitted in a ring-receiving groove formed in the inner periphery of the cylinder chamber near its open end. A plurality of annular grooves are formed in the outer periphery of the plunger so as to be axially spaced from each other at equal intervals. The register ring is adapted to be press-fitted in one of the annular grooves. With the register ring trapped between an engaging surface of a first annular groove which is one of the annular grooves located nearest to the front end of the plunger and a locking surface of the ring-receiving groove, an outer cylindrical surface of the plunger extending forwardly from the first annular groove has its front portion supported by an inner cylindrical surface of the cylinder chamber extending forwardly from the ring-receiving groove.

摘要翻译： 链条张紧器包括限定气缸室的壳体和具有安装在气缸室中的小直径端和弹簧的柱塞。 定位环安装在形成在气缸室的内周的靠近其开口端的环形容纳槽中。 在柱塞的外周形成有多个环形槽，以相等的间隔彼此轴向间隔开。 定位环适于压配合在一个环形槽中。 在第一环形槽的接合表面之间的定位环被捕获在位于最接近柱塞的前端的环形槽中的一个和接纳环的锁定表面之间的柱塞的外圆柱表面向前延伸 该第一环形槽的前部由从环形容纳槽向前延伸的气缸室的内圆柱表面支撑。

公开(公告)号：US20060116229A1

公开(公告)日：2006-06-01

申请号：US11283751

申请日：2005-11-22

申请人： Seiji Sato ,  Satoshi Kitano ,  Hisashi Hayakawa

发明人： Seiji Sato ,  Satoshi Kitano ,  Hisashi Hayakawa

IPC分类号： F16H7/08 ,  F16H7/22

CPC分类号： F16H7/0848 ,  F16H2007/0806 ,  F16H2007/0812 ,  F16H2007/0814 ,  F16H2007/0853 ,  F16H2007/0855 ,  F16H2007/0859

摘要： A chain tensioner includes a housing formed with a cylinder chamber in which a plunger is slidably mounted. A return spring, also mounted in the cylinder chamber, biases the plunger outwardly of the cylinder chamber. The housing is formed with an oil supply passage communicating with a pressure chamber defined in the cylinder chamber by the plunger. A check valve is provided at the outlet of the oil supply passage. An oil filter is mounted in the inlet of the oil supply passage. The oil filter removes foreign objects contained in hydraulic oil supplied into the oil supply passage, thereby preventing malfunction of the chain tensioner due to foreign objects getting stuck in moving parts of the chain tensioner.

摘要翻译： 链条张紧器包括形成有气缸室的壳体，柱塞可滑动地安装在该气缸室中。 也安装在气缸室中的复位弹簧将柱塞向气缸室向外偏压。 壳体形成有通过柱塞连通于限定在气缸室中的压力室的供油通道。 在供油通道的出口处设有止回阀。 油过滤器安装在供油通道的入口处。 油过滤器去除供给到供油通道中的液压油中所含的异物，由此防止由于异物卡在链条张紧器的移动部分而导致的链条张紧器的故障。