公开(公告)号：US10683913B2

公开(公告)日：2020-06-16

申请号：US15708672

申请日：2017-09-19

申请人： TSUBAKIMOTO CHAIN CO.

发明人： Munehiro Maeda ,  Yuji Kurematsu ,  Osamu Yoshida ,  Yudai Takagi

IPC分类号： F16H7/08

摘要： Provided is a tensioner which can ensure, with a simple structure, both the stability of the installation state of a check valve and the capacity of an oil storage chamber. A tensioner has a plunger, a housing, a check valve, and a coil spring. The plunger has a front-side plunger part having a pressing front end portion, and a rear-side plunger part disposed on the rear side of the front-side plunger part and having a valve movement restricting portion. The check valve is disposed on the rear side of the valve movement restricting portion. The coil spring is disposed so that one end thereof is in contact with a housing bottom portion and the other end thereof is in contact with the rear side of the check valve.

公开(公告)号：US10670118B2

公开(公告)日：2020-06-02

申请号：US15798987

申请日：2017-10-31

申请人： TSUBAKIMOTO CHAIN CO.

发明人： Yohei Nakata ,  Yuji Kurematsu ,  Toshitaka Ogo

IPC分类号： F16H7/08

摘要： A tensioner with a simple structure is provided, which is capable of keeping oil pressure in a first high oil-pressure chamber stable and holding a chain favorably. The tensioner includes a plunger, a housing, a check valve, an inner sleeve, and a biasing member. In the housing, a second high oil-pressure chamber and a unit setting part are formed. In the unit setting part, a relief valve unit is set. A gap between an inner circumferential surface of a plunger hole and an outer circumferential surface of the inner sleeve functions as part of an oil flow passage that connects the first high oil-pressure chamber and the second high oil-pressure chamber.

公开(公告)号：US20190323580A1

公开(公告)日：2019-10-24

申请号：US16287448

申请日：2019-02-27

申请人： TSUBAKIMOTO CHAIN CO.

发明人： Masanori Watanabe ,  Yudai Takagi ,  Yuji Kurematsu

IPC分类号： F16H7/08

摘要： An orifice member is disposed in a plunger including a plunger hole that forms a hydraulic chamber in conjunction with a plunger housing hole in a housing. The orifice member includes a deformed fitting section deformed to fit on the inner circumferential surface of the plunger hole, a communication section that causes a surface in contact with the top surface on the front side of the plunger hole and a surface on the hydraulic chamber side to communicate, and an orifice groove that communicates with the communication section and an external relief hole provided in the plunger on the surface in contact with the top surface on the front side of the plunger hole to constitute an orifice.

公开(公告)号：US20190120343A1

公开(公告)日：2019-04-25

申请号：US16161384

申请日：2018-10-16

申请人： TSUBAKIMOTO CHAIN CO.

发明人： Masanori Watanabe ,  Yuji Kurematsu

IPC分类号： F16H7/08 ,  F16H57/04 ,  F01L1/053

摘要： To provide a tensioner and a relief valve unit that enable a reduction in the number of parts to be processed and the number of assembling steps, reduce the amount of oil flowing out to the outside, prevent damage to the check valve, and improve the oil recovery rate. The relief valve unit that releases oil when pressure inside an oil pressure chamber reaches or exceeds a predetermined high pressure includes a check valve unit that stops reverse flow of oil flowing into the oil pressure chamber as a valve element, the check valve unit being slidably inserted in the relief valve unit. The relief valve unit includes a unit pressing spring that presses the check valve unit toward a relief valve seat. The check valve unit includes an oil passage for allowing oil to flow between an inner side and an outer side of the check valve unit.

公开(公告)号：US20170138443A1

公开(公告)日：2017-05-18

申请号：US15348067

申请日：2016-11-10

申请人： TSUBAKIMOTO CHAIN CO.

发明人： Yuji Kurematsu

IPC分类号： F16H7/08

CPC分类号： F16H7/0848 ,  F16H7/0838 ,  F16H2007/0806 ,  F16H2007/0814 ,  F16H2007/0853 ,  F16H2007/0859 ,  F16H2007/0872 ,  F16H2007/0893

摘要： To provide a chain tensioner capable of constantly providing an appropriate reaction force and damping characteristics for a variety of tension fluctuations irrespective of chain elongation, and capable of accommodating the tension fluctuations. The chain tensioner includes a distal end plunger 130 slidably inserted in a distal end bore 121 of a plunger 120, and a distal end biasing means 141 accommodated inside a second oil pressure chamber 102 such as to be able to expand and contract and to urge the distal end plunger 130. The chain tensioner further includes a check valve unit 150 that stops oil flowing from an oil pressure chamber 101 into the second oil pressure chamber 102, and a first relief valve unit 160 that releases oil toward the oil pressure chamber 101 when the pressure reaches or exceeds a predetermined high level.

公开(公告)号：US20170130807A1

公开(公告)日：2017-05-11

申请号：US15348046

申请日：2016-11-10

申请人： TSUBAKIMOTO CHAIN CO.

发明人： Yuji Kurematsu

IPC分类号： F16H7/08

CPC分类号： F16H7/0848 ,  F16H2007/0806 ,  F16H2007/0814 ,  F16H2007/0859 ,  F16H2007/0872 ,  F16H2007/0893

摘要： To provide a chain tensioner that can maintain the pressure of the oil pressure chamber at a correct level to achieve a desired reaction force and damping characteristics corresponding to the rpm, and enable a reduction in the number of parts to be machined and the number of assembling steps; reduce the amount of oil flowing out of the system; and prevent damage to the check valve, without causing an increase in size of the chain tensioner. The chain tensioner includes a check valve unit 150 that stops reverse flow of oil flowing into an oil pressure chamber 101, and a first relief valve unit 160 and a second relief valve unit 170 that release oil when the pressure reaches or exceeds a predetermined high level. The second relief valve unit 170 has a higher valve opening pressure than that of the first relief valve unit 160.

公开(公告)号：US09534671B2

公开(公告)日：2017-01-03

申请号：US14183790

申请日：2014-02-19

申请人： TSUBAKIMOTO CHAIN CO.

发明人： Yuichiro Ishikawa ,  Yuji Kurematsu

IPC分类号： F16H7/18

CPC分类号： F16H7/18 ,  F16H2007/185

摘要： The occupation space of a chain inside an engine room can be reduced, while the necessary strength, rigidity, and durability are maintained, the sheet thickness can be decreased, the number of production steps and material waste can be reduced, stress concentration and strains during bending and fixing can be reduced, load offset during fixing and loosening of bolts or the like can be prevented, the increase in vibrations and noise during the use can be prevented, the maintenance operation load can be reduced, and utility can be increased with a simple configuration. A chain guide is provided with a base member supporting a guide shoe. The base member has a base mounting portion and base wall portions formed to sandwich the guide shoe from both sides in a width direction. The guide shoe has a guide shoe mounting portion at a position apart from the base mounting portion in the chain running direction.

摘要翻译： 可以减少发动机室内的链条的占用空间，同时保持必要的强度，刚性和耐久性，可以减少板厚，减少生产步骤和材料浪费的次数，应力集中和应变 可以减少弯曲和固定，可以防止在固定和松动螺栓等期间的负载偏移，可以防止使用期间的振动和噪音的增加，从而可以降低维护操作负荷，并且可以通过 简单配置。 链条引导件设置有支撑引导靴的基部构件。 基部构件具有基部安装部和底壁部，其形成为在宽度方向上从两侧夹持导靴。 导靴具有在链条运行方向上离开基座安装部分的位置处的导靴安装部分。

公开(公告)号：US20160290447A1

公开(公告)日：2016-10-06

申请号：US15089910

申请日：2016-04-04

申请人： TSUBAKIMOTO CHAIN CO.

发明人： Kohei Kunimatsu ,  Yuji Kurematsu

IPC分类号： F16H7/08 ,  F16K15/04 ,  F16K17/02

CPC分类号： F16H7/0848 ,  F16H7/0836 ,  F16H2007/0806 ,  F16H2007/0812 ,  F16H2007/0814 ,  F16H2007/0853 ,  F16H2007/0859 ,  F16H2007/0893 ,  F16K15/04 ,  F16K17/02

摘要： To provide a chain tensioner and a relief valve unit that enable a reduction in the number of parts to be machined and the number of assembling steps, reduce the amount of oil flowing out to the outside, and prevent damage on a check valve, without having to increase the size of the chain tensioner. The chain tensioner includes a check valve unit that suppresses reverse flow of oil flowing into an oil pressure chamber, and a relief valve unit that releases the oil when the pressure inside the oil pressure chamber reaches or exceeds a predetermined high pressure. The check valve unit is disposed as a valve element of the relief valve unit, and the relief valve unit and the check valve unit are formed integral with each other.

摘要翻译： 为了提供能够减少待加工零件数量和组装步骤数量的链条张紧器和安全阀单元，减少流出到外部的油量，并且防止止回阀损坏，而没有 增加链张紧器的尺寸。 链条张紧器包括抑制流入油压室的油的反向流动的止回阀单元和当油压室内的压力达到或超过预定高压时释放油的安全阀单元。 止回阀单元被设置为安全阀单元的阀元件，并且安全阀单元和止回阀单元彼此一体地形成。

公开(公告)号：US20160186838A1

公开(公告)日：2016-06-30

申请号：US14970910

申请日：2015-12-16

申请人： TSUBAKIMOTO CHAIN CO.

发明人： Yuji Kurematsu

IPC分类号： F16H7/08

CPC分类号： F16H7/08 ,  F16H2007/0806 ,  F16H2007/0812 ,  F16H2007/0853 ,  F16H2007/0859

摘要： An object of the present invention is to provide a chain tensioner that allows a necessary and sufficient amount of oil to be fed during restart following a long stoppage of oil feeding and that maintains a proper pressure, thus preventing possible noise and vibration. An oil storing chamber 123 is formed inside a plunger 120 and forward of a check valve 150 in a protruding direction of the plunger 120. A tensioner body 110 has an oil feeding hole 114 through which a cylindrical surface portion 113 of a plunger housing hole 111 communicates with an outside and a high-pressure discharge hole 115 through which a pressure oil chamber 101 in the plunger housing hole 111 communicates with the outside. A relief valve 160 that is opened under a high pressure is provided in the high-pressure discharge hole 115 and closer to the pressure oil chamber 101.

摘要翻译： 本发明的目的是提供一种链条张紧器，其在油供给的长时间停止之后允许在重新启动期间供给必要且足够量的油，并且保持适当的压力，从而防止可能的噪音和振动。 在柱塞120的内部形成有储油室123，并且在柱塞120的突出方向上形成止回阀150的前方。张紧器主体110具有供油孔114，柱塞容纳孔111的圆筒面部113 与外部和高压排出孔115连通，柱塞容纳孔111中的压力油室101通过该高压排出孔与外部连通。 在高压排出孔115中设置有高压开放的安全阀160，并且靠近压力油室101。

公开(公告)号：US20160123436A1

公开(公告)日：2016-05-05

申请号：US14931207

申请日：2015-11-03

申请人： TSUBAKIMOTO CHAIN CO.

发明人： Yasuyuki Takagi ,  Osamu Yoshida ,  Munehiro Maeda ,  Yuji Kurematsu

IPC分类号： F16H7/08

CPC分类号： F16H7/08 ,  F16H7/0836 ,  F16H2007/0806 ,  F16H2007/0872 ,  F16H2007/0893

摘要： An object of the present invention is to provide a tensioner and a rocking lever that have simple configurations and that enable an increase in the volume of a space provided inside a plunger, the tensioner and the rocking lever being capable of preventing a stopper pin from being damaged or falling out. A plunger pin hole 121 is formed in a plunger 120 of a tensioner 100. In a tensioner body 110, a body pin hole 113 is formed in a tip protruding portion 112 provided so as to protrude from a side of an opening of the plunger housing hole 121. One of lips 154 provided on opposite sides, in a width direction, of the pressing surface 153 of a rocking lever 150 so as to protrude from the pressing surface 153, has a thinned portion 155 thinned in the width direction.

摘要翻译： 本发明的目的是提供一种具有简单构造并且能够增加设置在柱塞内的空间的体积的张紧器和摇杆，张紧器和摆动杆能够防止止动销成为 损坏或掉落 柱塞销孔121形成在张紧器100的柱塞120中。在张紧器主体110中，主体销孔113形成在尖端突出部112中，其设置成从柱塞壳体的开口侧突出 设置在摆动杆150的按压面153的宽度方向的相对侧的一个唇部154，以便从按压表面153突出，具有在宽度方向上变薄的变薄部分155。