公开(公告)号：US06530256B1

公开(公告)日：2003-03-11

申请号：US09763208

申请日：2001-02-20

申请人： Tohru Irie ,  Akinobu Morikawa ,  Hisashi Hayakawa

发明人： Tohru Irie ,  Akinobu Morikawa ,  Hisashi Hayakawa

IPC分类号： B21D4102

CPC分类号： B21D41/02

摘要： There are disclosed an expanded tube processing method and expanded tube processing apparatus of a cylindrical tube, for inclining an opening end portion of a work formed of the cylindrical tube of metal with respect to an axis of a work to perform tube expansion, in which in order to simply perform an expanded tube processing, a punch is disposed on an opening end side of the work of the metal cylindrical tube and the punch is inserted from the work opening end to perform the tube expansion on a work end. A punch 18 is inserted from the work opening end at a predetermined angle to a tube axis A of a work 6. During insertion of the punch 18, the punch 18 and/or the work 6 are moved in a direction Y1-Y2 substantially crossing at right angles to an advancing/retreating drive direction Z1-Z2 of the punch 18 to perform the expanded tube processing.

摘要翻译： 公开了一种圆筒形管的膨胀管加工方法和膨胀管加工装置，用于使相对于工件的轴线的金属圆柱形管形成的工件的开口端部倾斜以进行管膨胀，其中 为了简单地进行扩管处理，将冲头设置在金属圆筒管的工件的开口端侧，并且冲头从工作开口端插入，以在工作端执行管膨胀。 冲头18从工作开口端以预定的角度插入到工件6的管轴线A.在插入冲头18期间，冲头18和/或工件6沿大致相交的方向Y1-Y2移动 与冲头18的前进/后退驱动方向Z1-Z2成直角，以进行扩管处理。

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

IPC分类号： F16H7/08 ,  F16H7/12

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。

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

IPC分类号： F16F3/07 ,  F16H7/08 ,  F16H7/12

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。

公开(公告)号：US5607368A

公开(公告)日：1997-03-04

申请号：US492573

申请日：1995-06-20

申请人： Yoshikazu Hida ,  Tomoyoshi Izutsu ,  Hisashi Hayakawa

发明人： Yoshikazu Hida ,  Tomoyoshi Izutsu ,  Hisashi Hayakawa

IPC分类号： F02B67/06 ,  F16H7/08 ,  F16H7/12

CPC分类号： F16H7/1236 ,  F16H7/0848 ,  F02B67/06 ,  F16H2007/0806 ,  F16H2007/0812 ,  F16H2007/0859 ,  F16H2007/0891

摘要： An autotensioner which is of more compact structure and can be mounted in a limited space. The autotensioner has a fixed member, an arm pivotally mounted on the fixed member, a pulley support shaft mounted on the arm, a pulley rotatably mounted on the pulley support shaft, a cylinder having a damper mounted therein and mounted on the arm, the arm being pivotable about an axis and both the pulley support shaft and the cylinder being mounted on the arm at positions offset from the axis, the damper having a rod mounted in the cylinder so as to be pushed out of and into the cylinder, and a stopper fixed to the fixed member, the rod being kept in contact with the stopper.

摘要翻译： 自动伸缩器结构更紧凑，可以安装在有限的空间内。 自动张紧器具有固定部件，枢转地安装在固定部件上的臂，安装在臂上的皮带轮支撑轴，可旋转地安装在皮带轮支撑轴上的滑轮，安装在其中并安装在手臂上的阻尼器的气缸， 可以围绕轴线转动，并且滑轮支撑轴和气缸在轴线偏移的位置处安装在臂上，阻尼器具有安装在气缸中的杆，以便被推出并进入气缸，并且止动器 固定到固定构件上，杆与止动器保持接触。

公开(公告)号：US4940447A

公开(公告)日：1990-07-10

申请号：US351129

申请日：1989-05-12

申请人： Kazuki Kawashima ,  Makoto Yasui ,  Hisashi Hayakawa ,  Masayuki Imoto

发明人： Kazuki Kawashima ,  Makoto Yasui ,  Hisashi Hayakawa ,  Masayuki Imoto

IPC分类号： F02B67/06 ,  F16F13/00 ,  F16H7/08 ,  F16H7/12

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。

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

IPC分类号： F16H7/08 ,  F16H7/12

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。