公开(公告)号：US5833563A

公开(公告)日：1998-11-10

申请号：US956446

申请日：1997-10-23

Applicant: Toshio Takeda ,  Yukimori Kobayashi ,  Katsumi Hirabayashi ,  Shinji Kazaoka

Inventor： Toshio Takeda ,  Yukimori Kobayashi ,  Katsumi Hirabayashi ,  Shinji Kazaoka

IPC: F01L1/02 ,  F16H7/08 ,  F16H7/12

CPC classification number: F01L1/022 ,  F01L1/02 ,  F01L1/024 ,  F16H7/1236 ,  F16H2007/0806 ,  F16H2007/0891

Abstract: An automatic hydraulic tensioner according to the present invention is provided with a communication mechanism for allowing a space radially inside a plunger-side end wire portion of a coil spring to communicate with a small clearance between the plunger and a cylinder. This automatic hydraulic tensioner thus succeeds, with a simple structure, in preventing bubbles from remaining within a pressure chamber and appropriately maintaining the tension applied to a power transmitting means such as a belt, a chain or the like.

Abstract translation: 根据本发明的自动液压张紧器设置有连通机构，用于允许螺旋弹簧的柱塞侧端部线部的径向内部的空间与柱塞和气缸之间的小间隙连通。 因此，这种自动液压张紧器以简单的结构成功地防止气泡保持在压力室内并适当地保持施加到诸如皮带，链条等的动力传递装置上的张力。

公开(公告)号：US5630767A

公开(公告)日：1997-05-20

申请号：US578313

申请日：1995-12-26

Applicant: Katsumi Hirabayashi ,  Yukimori Kobayashi

Inventor： Katsumi Hirabayashi ,  Yukimori Kobayashi

IPC: F16H7/12 ,  B60R22/195 ,  F16H7/08

CPC classification number: B60R22/1954 ,  F16H7/0848 ,  F16H2007/081 ,  F16H2007/0812 ,  F16H2007/0859

Abstract: An auto-tensioner including a body having a cylindrical bore defined therein; a shaft having first and second ends, the first end of the shaft being slidably and rotatably engaged with the cylindrical bore of the body, the body including a mechanism for sealing the shaft in the cylindrical bore so as to be fluid-tight; a support arm having upper and lower ends, the lower end of the support arm being fixedly connected to the second end of the shaft; a pulley rotatably connected to the upper end of the support arm, the pulley being operatively engaged with a belt under tension; a mechanism for rotatively urging the shaft and the support arm whereby the support arm maintains a tension engagement between the pulley and the belt, the urging mechanism being operatively connected between the body and the shaft; and a mechanism for converting rotational movement of the shaft into axial movement thereof along the cylindrical bore, the converting mechanism operatively connected between the shaft and the body, wherein the cylindrical bore includes an inner end and an outer end, the inner end of the cylindrical bore being formed so as to define a pressure chamber and a fluid chamber between the inner end of the cylindrical bore and the first end of the shaft, the pressure and fluid chambers are further formed so as to define a narrow fluid passage therebetween, the pressure and fluid chambers are filled with a viscous fluid, the body has a reservoir chamber defined therein and formed so as to be located above the pressure and fluid chambers, the reservoir chamber is filled with viscous fluid and gas, a first main fluid passage is defined in the body to communicatively connect the pressure chamber with the reservoir chamber, and a second main fluid passage is defined in the body to communicatively connect the fluid chamber with the reservoir chamber; and a valve mechanism located in the first fluid passage for selectively controlling fluid communication of the pressure and fluid chambers with each other and with the reservoir chamber.

公开(公告)号：US4790796A

公开(公告)日：1988-12-13

申请号：US117537

申请日：1987-11-06

Applicant: Yoshio Okabe ,  Yukimori Kobayashi ,  Eiji Shirai

Inventor： Yoshio Okabe ,  Yukimori Kobayashi ,  Eiji Shirai

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

CPC classification number: F16H7/1272 ,  F16H7/08 ,  F16H7/0848 ,  F16H7/1236 ,  F02B67/06 ,  F16H2007/0806 ,  F16H2007/0812 ,  F16H2007/0859 ,  F16H2007/0891 ,  F16H7/0836

Abstract: A free piston type auto-tensioner adjusts a tension of an engine timing belt for automobiles. The auto-tensioner includes a body, a plunger slidably disposed in the body to form a first oil chamber, a free piston slidably disposed in the body to form a second oil chamber, a first seal member disposed between the body and the piston, a second seal member disposed between the piston and a rod of the plunger, an oil passage formed in the plunger to establish an oil communication between the first and second oil chambers, a check valve disposed in the oil passage, a first spring biasing the plunger, and a second spring biasing the piston.

Abstract translation: 自由活塞式自动张紧器调节汽车发动机正时皮带的张力。 自动张紧器包括主体，可滑动地设置在主体中以形成第一油室的柱塞，可滑动地设置在主体中以形成第二油室的自由活塞，设置在主体和活塞之间的第一密封构件， 设置在所述活塞和所述柱塞杆之间的第二密封构件，形成在所述柱塞中以在所述第一和第二油室之间建立油连通的油通道，设置在所述油通道中的止回阀，施加所述柱塞的第一弹簧， 以及偏压所述活塞的第二弹簧。

公开(公告)号：US4925436A

公开(公告)日：1990-05-15

申请号：US252046

申请日：1988-09-30

Applicant: Masaharu Hayashi ,  Hisashi Kodama ,  Yoshio Okabe ,  Yukimori Kobayashi ,  Eiji Shirai

Inventor： Masaharu Hayashi ,  Hisashi Kodama ,  Yoshio Okabe ,  Yukimori Kobayashi ,  Eiji Shirai

IPC: F16F9/10 ,  F16H7/12

CPC classification number: F16H7/1263

Abstract: For preventing very small amplitude vibrations of the rod in a tensioner during high speed movement of a belt to be tensioned by the tensioner, a tube which is connected to a plunger which moves together with the rod is overlapped with a stationary member so as to define an annular clearance therebetween in an operating chamber of the tensioner. By filling an operating fluid in the clearance, shear strain is generated upon high speed movement of the plunger, which resists movement of the plunger.

Abstract translation: 为了防止由张紧器张紧的皮带的高速运动期间张紧器中杆的非常小的振幅振动，连接到与杆一起移动的柱塞的管与固定构件重叠以便限定 在张紧器的操作室中的环形间隙。 通过将工作流体填充在间隙中，在柱塞的高速运动时产生剪切应变，其抵抗柱塞的移动。

公开(公告)号：US4798563A

公开(公告)日：1989-01-17

申请号：US130180

申请日：1987-12-08

Applicant: Yoshio Okabe ,  Yukimori Kobayashi ,  Makoto Ishikawa ,  Tamotsu Kamiya ,  Tomiaki Atsumi

Inventor： Yoshio Okabe ,  Yukimori Kobayashi ,  Makoto Ishikawa ,  Tamotsu Kamiya ,  Tomiaki Atsumi

IPC: F16H7/08 ,  F16H7/12

CPC classification number: F16H7/1236 ,  F16H7/1281 ,  F16H2007/0812 ,  F16H2007/0859

Abstract: A self-contained type automatic belt tensioner adjusts a tension of an engine timing belt for automobiles. The tensioner comprises a body, a plunger slidably mounted in the body, a reservoir chamber located in the plunger, a pressure chamber disposed between the plunger and a closed wall of the body, a rod member fixed to the plunger, a bellows shaped elastic diaphragm located in the reservoir chamber with one end thereof being fixed to the rod member and the other end being fixed to the body, a check valve allowing a fluid flow only from the reservoir chamber to the pressure chamber, and a return spring interposed between the plunger and the closed wall of the body so as to bias said plunger in the direction of the rod member.

Abstract translation: 独立式自动皮带张紧器调节汽车发动机正时皮带的张力。 张紧器包括主体，可滑动地安装在主体中的柱塞，位于柱塞中的储存室，设置在柱塞和主体的封闭壁之间的压力室，固定到柱塞的杆构件，波纹管形弹性隔膜 位于储存室中，其一端固定在杆构件上，另一端固定在主体上，止回阀仅允许流体从贮存室流到压力室;以及复位弹簧，插在柱塞之间 和主体的封闭壁，以便沿着杆构件的方向偏压所述柱塞。

公开(公告)号：US5104359A

公开(公告)日：1992-04-14

申请号：US583312

申请日：1990-09-17

Applicant: Eiji Shirai ,  Yoshio Okabe ,  Yukimori Kobayashi

Inventor： Eiji Shirai ,  Yoshio Okabe ,  Yukimori Kobayashi

IPC: F16H7/08 ,  F16H7/12

CPC classification number: F16H7/1236 ,  F16H2007/0859 ,  F16H2007/0891

Abstract: A tensioner for vehicle belts produces reduced rattling because radial forces are not transferred to the plunger. A tensioner body has a columnar hole extending from an open end toward a closed end. The plunger is fitted into the columnar hole and separates the columnar hole into first and second chambers. The plunger has sufficient clearance with respect to the body to permit restricted passage of fluid between the chambers. A rod pressed by the belt extends into the columnar hole and presses the plunger against the biasing force of a spring. In order to reduce the transfer of radial forces from the rod to the plunger, either the lower surface of the rod or the upper surface of the plunger is formed in a semi-spherical shape.

Abstract translation: 由于径向力不传递到柱塞，因此车辆皮带张紧器会产生减小的晃动。 张紧器主体具有从开口端朝向封闭端延伸的柱状孔。 将柱塞装入柱状孔，将柱状孔分离成第一和第二腔。 柱塞相对于主体具有足够的间隙，以允许液体在腔室之间的限制通过。 带被按压的杆延伸到柱状孔中并克服弹簧的偏置力而压住柱塞。 为了减少从杆到柱塞的径向力的传递，杆的下表面或柱塞的上表面形成为半球形。

公开(公告)号：US4770137A

公开(公告)日：1988-09-13

申请号：US827573

申请日：1986-02-10

Applicant: Yoshio Okabe ,  Yukimori Kobayashi

Inventor： Yoshio Okabe ,  Yukimori Kobayashi

IPC: F01L13/00 ,  F02B77/00

CPC classification number: F01L13/0005

Abstract: A cylinder control device for a variable-cylindered engine. The device comprises a body slidable within a bore formed in a block and urged by a spring always in contact with a cam, a plunger mounted in the body and slidable by hydraulic pressure in the direction perpendicular to the direction of sliding of the body, the plunger having a groove which is adapted to be engaged by the upper end of a valve stem 40 and an escape bore which is adapted to be positioned right above the upper end of the valve stem when the plunger is slided to a cylinder-inoperative position; and means for controlling said application of the hydraulic pressure to the plunger under the control of a computer. When the computer provides an instruction for normal operation of the cylinder, the plunger is held at a position where the upper end of the valve stem engages with the groove in the plunger so that, when the cam is rotated, the valve stem is depressed through the body thereby to open the valve port, whereas, when the hydraulic pressure is applied to the plunger so as to urge the plunger to a valve-inoperative position, the upper end of the valve stem escapes into the escape bore in the plunger when the body is depressed by the cam, so that the valve stem is not depressed and the valve is kept closed, thereby keeping the cylinder inoperative.

Abstract translation: 一种用于可变圆筒发动机的气缸控制装置。 该装置包括一个主体，该主体可以在一个形成在一块内的孔中滑动，并由一个与凸轮总是接触的弹簧推动，柱塞安装在本体中，并且可以通过液压在与主体滑动方向垂直的方向上滑动。 柱塞具有适于被阀杆40的上端接合的凹槽和当柱塞滑动到气缸不工作位置时适于定位在阀杆的上端正上方的排泄孔; 以及用于在计算机的控制下控制所述液压施加到柱塞的装置。 当计算机提供用于汽缸的正常操作的指令时，柱塞被保持在阀杆的上端与柱塞中的槽接合的位置，使得当凸轮旋转时，阀杆被压下 阀体由此打开阀口，而当液压施加到柱塞上以便将柱塞推到阀门不工作位置时，阀杆的上端在柱塞中逸出进入排出孔 主体被凸轮压下，使得阀杆不被压下并且阀保持关闭，从而保持气缸不起作用。

公开(公告)号：US4911680A

公开(公告)日：1990-03-27

申请号：US328498

申请日：1989-03-24

Applicant: Hisashi Kodama ,  Yoshio Okabe ,  Yukimori Kobayashi

Inventor： Hisashi Kodama ,  Yoshio Okabe ,  Yukimori Kobayashi

IPC: F16F9/32 ,  F16H7/08 ,  F16H7/12

CPC classification number: F16H7/08 ,  F16H7/0848 ,  F16H7/1236 ,  F16H2007/0812 ,  F16H2007/0859 ,  F16H2007/0891

Abstract: A hermetically sealed autotensioner used for adjusting tension of engine belts comprises a cylinder, a plunger slidably fitted in the cylinder and having a rod projeced from the cylinder, a free piston slidably fitted in the cylinder, and a rod guide fitted in the tip portion of the cylinder so as to slidably support the rod. When a large thrust force acts on the rod, the rod guide serves as a bearing for the rod so that no scuffing or rocking motion occurs between the cylinder and the plunger.

Abstract translation: 用于调节发动机皮带张力的密封式自动张紧器包括一气缸，可滑动地安装在气缸中的柱塞，并具有一个从气缸上推出的杆，一个可滑动地装在气缸中的自由活塞， 气缸，以便可滑动地支撑杆。 当大的推力作用在杆上时，杆引导件用作杆的轴承，使得缸和柱塞之间不会发生磨损或摇摆运动。

公开(公告)号：US4858572A

公开(公告)日：1989-08-22

申请号：US252054

申请日：1988-09-30

Applicant: Eiji Shirai ,  Yoshio Okabe ,  Yukimori Kobayashi

Inventor： Eiji Shirai ,  Yoshio Okabe ,  Yukimori Kobayashi

IPC: F01L1/34 ,  F01L1/344

CPC classification number: F01L1/3442 ,  F01L2001/34426 ,  F01L2001/34459 ,  F01L2001/34473

Abstract: For adjusting an angular phase difference between an engine crank shaft and an engine cam shaft, fluid under pressure is supplied into one or more chambers defined therebetween. The adjusted condition is maintained or held by mechanical engagement between both shafts.

Abstract translation: 为了调节发动机曲柄轴和发动机凸轮轴之间的角度相位差，在压力下的流体被供给到在它们之间限定的一个或多个室中。 通过两轴之间的机械接合维持或保持调节状态。

公开(公告)号：US4615307A

公开(公告)日：1986-10-07

申请号：US717920

申请日：1985-03-29

Applicant: Hisashi Kodama ,  Yukimori Kobayashi

Inventor： Hisashi Kodama ,  Yukimori Kobayashi

IPC: F01L1/24 ,  F01L13/00 ,  F02D13/06

CPC classification number: F01L13/0005 ,  F01L1/2405 ,  F02D13/06 ,  F01L2820/031 ,  Y02T10/18

Abstract: A hydraulic valve lifter for a variable displacement engine includes a body member, a check valve disposed within the body member for controlling a pressure chamber and a reservoir chamber, a sleeve member secured to one end of the body member, a plunger member slidably disposed in an axial bore of the sleeve member, and a solenoid valve having a valve rod for actuating the check valve. The direction of movement of the check valve is disposed at right angles to the axial direction of the body member. The direction of movement of the valve rod is the same as the direction of the movement of the check valve.

Abstract translation: 一种用于可变排量发动机的液压气门挺杆，包括主体构件，设置在主体构件内用于控制压力室和储存室的止回阀，固定到主体构件的一端的套筒构件，可滑动地设置在 套筒构件的轴向孔，以及具有用于致动止回阀的阀杆的电磁阀。 止回阀的移动方向配置成与主体部件的轴向成直角。 阀杆的运动方向与止回阀的运动方向相同。