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公开(公告)号：US20220196122A1
公开(公告)日：2022-06-23
申请号：US17501469
申请日：2021-10-14
发明人： Haruhisa Ohta , Osamu Yoshida , Yuichiro Ishikawa
IPC分类号： F16H7/08
摘要： To provide a tensioner capable of preventing slipping between a rack portion and ratchet pawls and securing a large backlash with a simple structure. The tensioner includes a ratchet rotatably mounted on a housing and having a front pawl and a rear pawl spaced apart in a front and rear direction on a side face positioned opposite the rack portion. The ratchet includes an additional pawl formed between the front pawl and the rear pawl in the front and rear direction on the side face positioned opposite the rack portion.
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公开(公告)号：US10683913B2
公开(公告)日：2020-06-16
申请号：US15708672
申请日：2017-09-19
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.
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公开(公告)号：US10041571B2
公开(公告)日：2018-08-07
申请号：US14941793
申请日：2015-11-16
发明人： Satoshi Kitamura , Osamu Yoshida
IPC分类号： F16H7/08
摘要： Provided is a simple-structured tensioner that can ensure a smooth flow of oil while enabling a reduction in the production cost. A tensioner 10 includes a plunger 30 provided with a plunger through hole 32 extending from an outer circumferential surface to an inner circumferential surface of the plunger 30, and a tensioner body 20 provided with an oil supply hole 25 extending from an outer wall of the tensioner body 20 to the plunger bore 21. The oil supply hole 25 is formed in an elongated shape that extends along a protruding direction of the plunger.
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公开(公告)号：US20170108093A1
公开(公告)日：2017-04-20
申请号：US15288049
申请日：2016-10-07
IPC分类号： F16H7/08
CPC分类号： F16H7/0848 , F16H2007/0806 , F16H2007/0812 , F16H2007/0814 , F16H2007/0859
摘要： To provide a simple-structured tensioner capable of minimizing an increase in production cost, and avoiding performance degradation of its check valve resulting from a buildup of oil pressure inside an oil pressure chamber, while securing good assemblability of the check valve. A check valve 50 is provided in the tensioner 10 in which a ball seat 52 is fixedly set to a housing 30 or a plunger 20 and has a retainer receiving recess 52b for setting a retainer 53 on one side facing an oil pressure chamber 11.
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公开(公告)号：US20160123436A1
公开(公告)日：2016-05-05
申请号：US14931207
申请日：2015-11-03
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。
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公开(公告)号：US20150354673A1
公开(公告)日：2015-12-10
申请号：US14718837
申请日：2015-05-21
发明人： Nobuyuki Onoda , Osamu Yoshida , Yuji Kurematsu
IPC分类号： F16H7/08
CPC分类号： F16H7/08 , F16H7/0836 , F16H7/0848 , F16H2007/0806 , F16H2007/0812
摘要： Provided is a chain tensioner that is capable of restricting the movement of a plunger at an engagement position, hardly causes its breakage and abrasion even if receiving a great force applied to the plunger, needs no setting for a backlash amount, and allows the engagement position of the plunger to be freely shifted forward and backward.The tensioner body has an engagement member that extends toward and retracts from engagement grooves provided on the outer periphery of the plunger, a press member that presses, in one direction, a cam member which maintains and releases the extending state of the engagement member, and a hydraulic supply path through which oil is supplied to press the cam member in a direction opposite to the pressing direction of the press member.
摘要翻译： 提供一种链条张紧器，其能够限制柱塞在接合位置的运动，即使接收到施加到柱塞的大的力也不会导致其破裂和磨损，不需要设定间隙量，并且允许接合位置 的柱塞自由地向前和向后移动。 张紧器本体具有从设置在柱塞的外周上的接合槽延伸并向后退的接合构件，沿一个方向按压保持并释放接合构件的延伸状态的凸轮构件的按压构件，以及 供给油的液压供给路径，以与按压部件的按压方向相反的方向推压凸轮部件。
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公开(公告)号：US12013021B2
公开(公告)日：2024-06-18
申请号：US16986565
申请日：2020-08-06
发明人： Osamu Yoshida , Yudai Takagi
CPC分类号： F16H55/17 , B21K1/30 , F16H2055/173
摘要： To provide a rotating member and a forming method thereof that allow formation of protrusions biting into an opposite surface to achieve high slip torque with a simple configuration. The rotating member includes a boss part and an anti-slip surface at least on one of both axial end faces of the boss part. The anti-slip surface has a plurality of corrugated rib parts, which includes a main groove and at least one auxiliary groove extending parallel to the main groove, with a ridge protruding higher than the anti-slip surface between the main groove and the auxiliary groove.
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公开(公告)号：US11708881B2
公开(公告)日：2023-07-25
申请号：US17501469
申请日：2021-10-14
发明人： Haruhisa Ohta , Osamu Yoshida , Yuichiro Ishikawa
IPC分类号： F16H7/08
CPC分类号： F16H7/0848 , F16H7/08 , F16H2007/0802 , F16H2007/0806 , F16H2007/0812 , F16H2007/0853 , F16H2007/0859
摘要： To provide a tensioner capable of preventing slipping between a rack portion and ratchet pawls and securing a large backlash with a simple structure. The tensioner includes a ratchet rotatably mounted on a housing and having a front pawl and a rear pawl spaced apart in a front and rear direction on a side face positioned opposite the rack portion. The ratchet includes an additional pawl formed between the front pawl and the rear pawl in the front and rear direction on the side face positioned opposite the rack portion.
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公开(公告)号：US20210102613A1
公开(公告)日：2021-04-08
申请号：US16986565
申请日：2020-08-06
发明人： Osamu Yoshida , Yudai Takagi
摘要： To provide a rotating member and a forming method thereof that allow formation of protrusions biting into an opposite surface to achieve high slip torque with a simple configuration. The rotating member includes a boss part and an anti-slip surface at least on one of both axial end faces of the boss part. The anti-slip surface has a plurality of corrugated rib parts, which includes a main groove and at least one auxiliary groove extending parallel to the main groove, with a ridge protruding higher than the anti-slip surface between the main groove and the auxiliary groove.
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公开(公告)号：US20190242461A1
公开(公告)日：2019-08-08
申请号：US16263696
申请日：2019-01-31
发明人： Masanori Watanabe , Osamu Yoshida
IPC分类号： F16H7/08
CPC分类号： F16H7/0836 , F16H7/0848 , F16H2007/0806 , F16H2007/0812 , F16H2007/0859
摘要： The present invention provides a chain tensioner that automatically adjusts flow path resistance inside an oil leak path with a simple configuration to make it possible to reduce a change in damping characteristics resulting from a change in oil temperature and reduce an increase in manufacturing cost. In the chain tensioner, a pressure oil chamber is provided with an oil leak path communicating with an outside of the chain tensioner, the oil leak path contains a movable piece which is movable with a temperature-dependent deformation member that deforms according to oil temperature, and the movable piece is formed into a shape that changes flow path resistance of the oil leak path according to a position to which the movable piece is moved.
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