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公开(公告)号：US4940447A
公开(公告)日：1990-07-10
申请号：US351129
申请日：1989-05-12
CPC分类号： F16H7/0836 , F16F13/00 , F16H7/0848 , F16H2007/0806 , F16H2007/0859 , F16H2007/0891
摘要： An autotensioner for adjusting the tension of a timing belt used with an automotive engine. It includes a cylinder case filled with a hydraulic oil, a piston partitioning the interior of the cylinder case into a pressure chamber and a reservoir chamber and a push rod having its bottom end coupled to the piston and the top end adapted to protrude from the cylinder case. A spring is provided to bias the piston and the push rod upwardly. The pressure chamber communicates with the reservoir chamber through a channel formed through the piston. A plate-shaped check valve is provided in the pressure chamber to open and close the bottom of the channel. The plate-shaped valve can respond quickly to the fluctuation of pressure in the pressure chamber because of its reduced mass. Thus, when the piston and the push rod rise biased by the spring, the valve can move quickly to such a position as to open the channel, thus allowing the hydraulic oil in the reservoir chamber to flow quickly and smoothly back into the pressure chamber. This will prevent cavitation in the pressure chamber. The responsiveness of the valve will be improved further by providing another spring for biassing the valve in such a direction as to open the channel.
摘要翻译： 用于调节与汽车发动机一起使用的同步皮带张力的自动张紧器。 它包括装有液压油的气缸壳体，将气缸壳体的内部分隔成压力室和储存室的活塞和其底端联接到活塞的推杆，并且顶端适于从气缸突出 案件。 提供弹簧以向上偏压活塞和推杆。 压力室通过穿过活塞形成的通道与贮存室连通。 在压力室中设置有一个板形止回阀，以打开和关闭通道的底部。 板状阀由于质量下降而能够快速响应压力室内的压力波动。 因此，当活塞和推杆被弹簧上升时，阀可快速移动到打开通道的位置，从而允许储存室中的液压油快速平稳地流回压力室。 这将防止压力室中的气蚀。 阀门的响应性将进一步提高，方法是提供另一个弹簧，用于沿打开通道的方向偏压阀门。
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2.发明授权Compact hydraulic autotensioner with return spring mounted around a sleeve 失效紧凑型液压自动伸缩器，带有安装在套管周围的复位弹簧
公开(公告)号：US5632474A
公开(公告)日：1997-05-27
申请号：US539157
申请日：1995-10-04
CPC分类号： F16H7/1236 , F16H2007/0806 , F16H2007/0859 , F16H2007/0891
摘要： A hydraulic autotensioner has a cylinder having a closed bottom end, a sleeve mounted in the cylinder and a plunger slidably mounted in the sleeve. The interior of the cylinder is divided into a reservoir chamber and a pressure chamber by the plunger which is formed with a passage through which the reservoir chamber and the pressure chamber communicate with each other. A check valve is provided in the passage to close the passage if the pressure of hydraulic oil in the pressure chamber increases above the pressure of hydraulic oil in the reservoir chamber. A return spring is mounted in the cylinder to bias a rod which is axially movable together with the plunger in such a direction as to protrude from an upper opening of the cylinder. The return spring is mounted in a space formed between the outer peripheral surface of the sleeve and the inner peripheral surface of the cylinder.
摘要翻译： 液压自动张紧器具有一个具有封闭的底端的圆柱体，安装在圆柱体中的套筒和可滑动地安装在套筒中的柱塞。 气缸的内部通过柱塞分成储存室和压力室，柱塞形成有通道，储存室和压力室通过该通道相互连通。 如果压力室中的液压油的压力升高到储存室中的液压油的压力，则在通道中设置止回阀以关闭通道。 回转弹簧安装在气缸中以偏压杆，该杆可以与柱塞一起沿着从气缸的上部开口突出的方向轴向移动。 复位弹簧安装在形成于套筒的外周面与气缸的内周面之间的空间中。
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公开(公告)号：US4904230A
公开(公告)日：1990-02-27
申请号：US382938
申请日：1989-07-21
申请人： Kazuki Kawashima , Hisashi Hayakawa
发明人： Kazuki Kawashima , Hisashi Hayakawa
CPC分类号： F16H7/1236 , F16H2007/0806 , F16H2007/081 , F16H2007/0844 , F16H2007/0859 , F16H2007/0878 , F16H2007/0891
摘要： A belt autotensioner for giving a desired tension to a belt. It includes a tension pulley pressed against the belt, an eccentric shaft extending through the tension pulley to rotatably support it and formed with a hole arranged eccentrically from the axis of the tension pulley, an actuator having a cylinder and a push rod silidably mounted in the cylinder and having its one end protruding from the cylinder and butting a projection fixed to the eccentric shaft, a bolt extending through the hole in the eccentric shaft and the cylinder of the actuator to pivotally support the eccentric shaft and a spring for biasing the eccentric shaft to pivot it in such a direction as to increase the tension of the belt. The spring may be a torsion coil spring mounted around the eccentric shaft with its one end fixed to the outer periphery of the eccentric shaft and the other end fixed to the cylinder of the actuator.
摘要翻译： 一种用于给皮带提供所需张力的皮带自动张紧器。 其包括被压靠在皮带上的张力滑轮，偏心轴延伸穿过张力滑轮以可旋转地支撑并形成有从张力皮带轮的轴线偏心布置的孔;致动器，具有可滑动地安装在 气缸，其一端从气缸突出并且对接固定到偏心轴的突起，延伸穿过偏心轴中的孔和致动器的气缸的螺栓枢转地支撑偏心轴和用于偏置偏心轴的弹簧 以使其沿着增加带的张力的方向枢转。 弹簧可以是围绕偏心轴安装的扭力螺旋弹簧，其一端固定在偏心轴的外周，另一端固定在致动器的气缸上。
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公开(公告)号：US5482262A
公开(公告)日：1996-01-09
申请号：US310994
申请日：1994-09-23
CPC分类号： F16H7/1236 , F16H2007/0806 , F16H2007/0859 , F16H2007/0891
摘要： A hydraulic autotensioner has a cylinder having a closed bottom end, a sleeve mounted in the cylinder and a plunger slidably mounted in the sleeve. The interior of the cylinder is divided into a reservoir chamber and a pressure chamber by the plunger which is formed with a passage through which the reservoir chamber and the pressure chamber communicate with each other. A check valve is provided in the passage to close the passage if the pressure of hydraulic oil in the pressure chamber increases above the pressure of hydraulic oil in the reservoir chamber. A return spring is mounted in the cylinder to bias a rod which is axially movable together with the plunger in such a direction as to protrude from an upper opening of the cylinder. The return spring is mounted in a space formed between the outer peripheral surface of the sleeve and the inner peripheral surface of the cylinder.
摘要翻译： 液压自动张紧器具有一个具有封闭的底端的圆柱体，安装在圆柱体中的套筒和可滑动地安装在套筒中的柱塞。 气缸的内部通过柱塞分成储存室和压力室，柱塞形成有通道，储存室和压力室通过该通道相互连通。 如果压力室中的液压油的压力升高到储存室中的液压油的压力，则在通道中设置止回阀以关闭通道。 回转弹簧安装在气缸中以偏压杆，该杆可以与柱塞一起沿着从气缸的上部开口突出的方向轴向移动。 复位弹簧安装在形成于套筒的外周面与气缸的内周面之间的空间中。
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公开(公告)号：US4986796A
公开(公告)日：1991-01-22
申请号：US485664
申请日：1990-02-27
申请人： Kazuki Kawashima , Hisashi Hayakawa
发明人： Kazuki Kawashima , Hisashi Hayakawa
CPC分类号： F16H7/1236 , F16H2007/0806 , F16H2007/0859 , F16H2007/0891
摘要： An autotensioner for controlling the tension of a belt. It is filled with a hydraulic oil containing poly-.alpha.-olefin as a basic ingredient. Since such an oil has excellent viscosity-temperature properties as well as good lubricating properties, a body and a piston slidably mounted in the body are abraded less at their sliding surface than with a prior art autotensioner and thus the size of an oil leakage gap formed therebetween is less subject to change. This will prevent cavitation in a pressure chamber formed in the body.
摘要翻译： 用于控制皮带张力的自动张紧器。 充满含有聚α-烯烃作为基本成分的液压油。 由于这种油具有优异的粘度 - 温度特性以及良好的润滑性能，所以与现有技术的自动张紧器相比，可滑动地安装在本体中的主体和活塞在滑动面上磨损较少，因此形成了漏油间隙的尺寸 其间不太可能改变。 这将防止在体内形成的压力室中发生气蚀。
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公开(公告)号：US4950209A
公开(公告)日：1990-08-21
申请号：US394032
申请日：1989-08-15
申请人： Kazuki Kawashima , Hisashi Hayakawa
发明人： Kazuki Kawashima , Hisashi Hayakawa
CPC分类号： F16H7/1236 , F16H2007/0806 , F16H2007/0859 , F16H2007/0891
摘要： An autotensioner includes a cylinder having its bottom closed and filled with a hydraulic oil and air, an oil seal mounted in the cylinder to seal the hydraulic oil and air, a rod slidably extending through the oil seal, and a piston slidably mounted in the cylinder with its top end abutting the bottom of the rod. The interior of the cylinder is separated into an upper reservoir chamber and a lower pressure chamber by the piston. Both chambers communicate with each other through a channel formed in the piston. The rod is biased by a spring mounted in the reservoir chamber in such a direction as to protrude from the cylinder. A check valve is provided in the pressure chamber near the bottom of the piston to open the channel in the piston only when the pressure in the pressure chamber is lower than the pressure in the reservoir chamber. The cylinder may have an outer casing and an inner sleeve so that the piston can slide on the inner surface of the sleeve.
摘要翻译： 自动张紧器包括其底部封闭并充满液压油和空气的气缸，安装在气缸中以密封液压油和空气的油封，可滑动地延伸穿过油封的杆，以及可滑动地安装在气缸中的活塞 其顶端邻接杆的底部。 气缸的内部通过活塞被分离成上储存室和下压室。 两个腔室通过形成在活塞中的通道相互连通。 杆被安装在储存室中的弹簧以从气缸突出的方向被偏压。 止回阀设置在靠近活塞底部的压力室中，仅当压力室中的压力低于储存室中的压力时才能打开活塞中的通道。 气缸可以具有外壳和内套筒，使得活塞可以在套筒的内表面上滑动。
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公开(公告)号：US06220982B1
公开(公告)日：2001-04-24
申请号：US09162728
申请日：1998-09-30
申请人： Kazuki Kawashima , Tadahisa Tanaka
发明人： Kazuki Kawashima , Tadahisa Tanaka
IPC分类号： F16H720
摘要： An object of the present invention, in an idler pulley having a pulley main body formed of steel sheet, is to prevent the pulley main body and the outer ring of a bearing from creeping and the pulley main body from slipping off. An idler pulley according to the invention comprises a pulley main body adapted to have a belt entrained therearound, a ball bearing fitted in the pulley main body, and a shaft member fitted in the inner ring of the ball bearing, wherein a layer of a soft metal whose Young's modulus is lower than those of the pulley main body and the outer ring of the bearing is interposed between the inner surface of the pulley main body of steel sheet and the outer surface of the outer ring of the bearing. When a belt is entrained, this soft metal layer elastically deforms to thereby function to fill a clearance which develops between the pulley main body and the outer ring of the bearing, thereby minimizing the decrease of the joining force between the pulley main body and the outer ring of the bearing, thus preventing drawbacks, such as creep, from occurring.
摘要翻译： 本发明的目的在于，在具有由钢板形成的皮带轮主体的惰轮中，防止滑轮主体和轴承的外圈蠕变，滑轮主体滑落。 根据本发明的惰轮包括：皮带轮主体，其适于具有夹在其周围的皮带，安装在皮带轮主体中的滚珠轴承和安装在滚珠轴承的内圈中的轴构件，其中软层 其杨氏模量低于带轮主体和轴承外圈的杨氏模量介于钢板的皮带轮主体的内表面和轴承的外圈的外表面之间。 当带被夹带时，该软金属层弹性变形，从而起到在滑轮主体和轴承的外圈之间形成的间隙的作用，从而最小化滑轮主体与外侧之间的接合力的减小 从而防止发生诸如蠕变的缺陷。
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公开(公告)号：US5234385A
公开(公告)日：1993-08-10
申请号：US919333
申请日：1992-07-27
申请人： Kazuki Kawashima , Isao Hori , Tomoyoshi Izutsu
发明人： Kazuki Kawashima , Isao Hori , Tomoyoshi Izutsu
CPC分类号： F16H7/1218 , F16H2007/081 , F16H2007/084
摘要： A belt tension adjusting device having a pulley arm having a bore formed with threads, a fixed member and a support shaft extending upwardly from the fixed member into the bore in the pulley arm. A bolt made of a synthetic resin is axially movably mounted on the support shaft and held in thread engagement with the threads formed on the bore. An elastic member is mounted in the bore between the bolt and the support shaft or a member integrally mounted on the support shaft for biasing the bolt in an axial direction. A coil spring is mounted on the pulley arm and having one end thereof in engagement with the pulley arm and the other end with the fixed member.
摘要翻译： 一种皮带张力调节装置，具有一个皮带轮臂，其具有形成有螺纹的孔，固定构件和从固定构件向上延伸到滑轮臂中的孔中的支撑轴。 由合成树脂制成的螺栓可轴向移动地安装在支撑轴上并与形成在孔上的螺纹螺纹接合。 弹性构件安装在螺栓和支撑轴之间的孔中，或者一体地安装在支撑轴上的构件，用于沿轴向偏置螺栓。 螺旋弹簧安装在滑轮臂上，其一端与皮带轮臂接合，另一端与固定部件相配合。
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公开(公告)号：US5334109A
公开(公告)日：1994-08-02
申请号：US991008
申请日：1992-12-16
申请人： Tomoyoshi Izutsu , Kazuki Kawashima
发明人： Tomoyoshi Izutsu , Kazuki Kawashima
CPC分类号： F16H7/1218 , F16H2007/081 , F16H2007/084
摘要： A belt tension adjusting device having a fixed member, a support shaft extending vertically from the fixed member and a pulley arm having a boss formed with a boss. The support shaft is received in the bore to rotatably support the pulley arm. A damper mechanism is mounted between the support shaft and the boss for damping a pivoting motion of the pulley arm. A pulley is mounted on the pulley arm. A tension adjusting spring is coupled to the pulley arm for biasing the pulley to impart tension to a belt. A bearing is provided for receiving radial loads produced when the pulley arm pivots. Part of the bearing is located in part outside the boss.
摘要翻译： 一种带张力调节装置，具有固定构件，从固定构件垂直延伸的支撑轴和具有形成有凸台的凸台的滑轮臂。 支撑轴被容纳在孔中以可旋转地支撑滑轮臂。 阻尼机构安装在支撑轴和凸台之间，用于阻止滑轮臂的枢转运动。 滑轮安装在滑轮臂上。 张力调节弹簧联接到皮带轮臂，用于偏压滑轮以向皮带施加张力。 提供一种用于接收当轮臂枢转时产生的径向载荷的轴承。 轴承的一部分位于凸台外部。
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公开(公告)号：US5713809A
公开(公告)日：1998-02-03
申请号：US806624
申请日：1997-02-26
IPC分类号： F16H7/08
CPC分类号： F16H7/0848 , F16H2007/0806 , F16H2007/0853 , F16H2007/0857 , F16H2007/0859 , F16H2007/0878 , F16H2007/0891 , F16H7/0829
摘要： A chain tensioner keeps constant the tension of a chain for transmitting the rotation of an engine crankshaft to e.g. camshafts. It includes a housing having a cylinder chamber. A rod member has its rear end inserted in the cylinder chamber for pressing a chain. A tension adjusting spring biases the rod member outwardly of the housing. The chain tensioner further includes a hydraulic damper for damping a dynamic load applied to the rod member from the chain, and a thread engagement mechanism for preventing the rod member from retracting under a static load applied to the rod member.
摘要翻译： 链条张紧器保持恒定的链条的张力，以将发动机曲轴的旋转传递到例如。 凸轮轴。 它包括具有气缸室的壳体。 杆构件的后端插入气缸室中，用于按压链条。 张力调节弹簧将杆构件偏压到壳体外部。 链条张紧器还包括用于阻尼从链条施加到杆构件的动态载荷的液压阻尼器，以及用于防止杆构件在施加到杆构件的静载荷下收缩的螺纹接合机构。
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