公开(公告)号：US07077772B2

公开(公告)日：2006-07-18

申请号：US10679643

申请日：2003-10-06

申请人： Hiroshi Hashimoto ,  Osamu Yoshida ,  Masaki Kato

发明人： Hiroshi Hashimoto ,  Osamu Yoshida ,  Masaki Kato

IPC分类号： F16H7/08

CPC分类号： F16H7/0848 ,  F16H2007/0806 ,  F16H2007/0812 ,  F16H2007/0853 ,  F16H2007/0859 ,  F16H2007/0878

摘要： A tensioner, in which an outer body and an inner body, which can deal with a tensioner mounting form required by various engines and a tension-imparting function, can be assembled. The inner body and a movement backward preventing mechanism, which form an inner body unit, can be unitized in a shape by which press-fitting and assembling is easy, and its efficient assembling production can be performed. A body 22 of a tensioner 21 is composed of outer and inner bodies 23 and 24 of different members. The outer body 23 is provided with a tensioner mounting means and an inner body fitting hole 23a. The inner body 24 is provided with a plunger accommodating hole 24a into which a plunger 26 biased by a compression spring 27 was slidably fitted, and a movement backward preventing mechanism 32 for preventing the backward movement of the plunger 26 is incorporated into the inner body 24. The movement backward preventing mechanism 32 comprises a rack 26b formed on a part of the outer circumference of the plunger 26, a pawl body 32b pivotably supported with a pivot shaft 32a in a cutaway groove formed on a front end of the inner body 24, and a spring 31c, which biases a pawl of the pawl body 32b so that the pawl engages the rack 26b. An inner body side unit 33 composed of at least the inner body 24, the movement backward preventing mechanism 32, the compression spring 27 and the plunger 26, is adapted to be press-fitted and fixed into the inner body fitting hole 23a of the outer body 23.

摘要翻译： 可以组装张紧器，其中可以组装可以处理各种发动机所需的张紧器安装形式和张力赋予功能的外部主体和内部主体。 形成内体单元的内体和防止移动机构可以组合成容易进行压配合的形状，能够进行有效的组装生产。 张紧器21的主体22由不同构件的外部主体23和内部主体24组成。 外体23设有张紧器安装装置和内体装配孔23a。 内体24设置有柱塞容纳孔24a，由压缩弹簧27偏压的柱塞26可滑动地装配在该柱塞容纳孔24a中，并且用于防止柱塞26向后运动的防止移动机构32结合到内体 24。 防止移动机构32包括形成在柱塞26的外周的一部分上的齿条26b，棘爪主体32b，其枢转地支撑在形成在内体的前端上的切割槽中的枢轴32a上 24和弹簧31c，其弹压棘爪主体32b的棘爪以使得棘爪接合齿条26b。 至少内体24，防止移动机构32，压缩弹簧27和柱塞26构成的内体侧单元33适于压入并固定在内体嵌合孔23a中 外身23。

公开(公告)号：US07063634B2

公开(公告)日：2006-06-20

申请号：US10715740

申请日：2003-11-18

申请人： Hiroshi Hashimoto ,  Osamu Yoshida

发明人： Hiroshi Hashimoto ,  Osamu Yoshida

IPC分类号： F16H7/08

CPC分类号： F16H7/0848 ,  F16H2007/0806 ,  F16H2007/0812 ,  F16H2007/0853 ,  F16H2007/0859 ,  F16H2007/0878

摘要： A chain tensioner has a spring-biased plunger with rack teeth engageable with teeth of wedge-shaped cam chips cooperating with a spring-biased cam-receiving ring in a recess formed in a tensioner housing. A seal plate, having a central hole through which the plunger extends, is provided as a closure for the recess to hold the cam chip assembly in place. A wire loop, for temporarily engaging a pin protruding laterally from the plunger, is pivoted in tube formed by rolling a portion of a seal plate. The wire loop holds the plunger in its retracted state while the tensioner is being installed, and automatically disengages the laterally protruding pin when the plunger is pushed inward by a tensioner lever, thereby releasing the plunger for normal operation.

摘要翻译： 链条张紧器具有弹簧偏置柱塞，齿条齿可与楔形凸轮芯片的齿啮合，楔形凸轮芯片与形成在张紧器壳体中的凹部中的弹簧偏置凸轮接收环配合。 具有柱塞延​​伸穿过的中心孔的密封板设置为用于凹部的闭合件，以将凸轮芯片组件保持在适当位置。 用于临时接合从柱塞横向突出的销的线环在通过滚动密封板的一部分而形成的管中枢转。 当安装张紧器时，线环将柱塞保持在其缩回状态，并且当柱塞被张紧器杆向内推动时，柱塞自动脱离侧向突出的销，从而释放柱塞以进行正常操作。

公开(公告)号：US20080207366A1

公开(公告)日：2008-08-28

申请号：US12104002

申请日：2008-04-16

申请人： Osamu Yoshida ,  Hiroshi Hashimoto ,  Kenichi Nagao

发明人： Osamu Yoshida ,  Hiroshi Hashimoto ,  Kenichi Nagao

IPC分类号： F16H7/08

CPC分类号： F01L1/02 ,  C22C21/02 ,  C23C28/00 ,  F01L1/022 ,  F01L2101/00 ,  F16H7/0848 ,  F16H2007/0806 ,  F16H2007/0808 ,  F16H2007/0812 ,  F16H2007/0842 ,  F16H2007/0853 ,  F16H2007/0887

摘要： To reduce seizing in a tensioner having a plunger slidable in a plunger-accommodating hole of a tensioner housing and biased in the projecting direction, the tensioner housing is formed of a hyper-eutectic Al—Si series alloy containing Si in the range from 14 to 16 weight % and having a particle diameter of proeutectic Si in the range from 20 to 30 μm.

摘要翻译： 为了减少张紧器中的卡住，该张紧器具有可在张紧器壳体的柱塞容纳孔中滑动并沿突出方向偏置的柱塞，张紧器壳体由含有Si的超共晶Al-Si系列合金形成， 16重量％，并且具有在20至30μm范围内的共晶Si的粒径。

公开(公告)号：US06808466B2

公开(公告)日：2004-10-26

申请号：US10387912

申请日：2003-03-13

申请人： Osamu Yoshida ,  Hiroshi Hashimoto

发明人： Osamu Yoshida ,  Hiroshi Hashimoto

IPC分类号： E16H708

CPC分类号： F16H7/0848 ,  F16H2007/0806 ,  F16H2007/0812 ,  F16H2007/0853 ,  F16H2007/0859

摘要： In a chain tensioner having a plunger biased to protrude from a housing by a spring, a pair of wedge-shaped cams are received in tapered recesses in the end of the housing, cooperate with racks formed on opposite sides of the plunger, and are urged against oblique seats formed by the tapered recesses by a biasing spring. The cams and racks produce a ratcheting action maintaining chain tension by preventing retracting movement of the plunger. The cams and racks disperse the load imparted to the plunger by the chain, and reduce localized wear, allowing the housing to be made from a light weight material such as aluminum. Accuracy requirements associated with conventional pawl-type ratcheting tensioners are avoided.

摘要翻译： 在具有通过弹簧偏压从壳体偏置的柱塞的链条张紧器中，一对楔形凸轮容纳在壳体的端部中的锥形凹部中，与形成在柱塞的相对侧上的齿条配合，并且被推动 抵靠由倾斜弹簧由锥形凹部形成的倾斜座椅。 凸轮和机架通过防止柱塞的回缩运动产生保持链条张力的棘轮动作。 凸轮和齿条通过链条分散施加到柱塞的负载，并减少局部磨损，允许壳体由诸如铝的轻质材料制成。 避免了与常规棘爪式棘轮张紧器相关的精度要求。

公开(公告)号：US07608004B2

公开(公告)日：2009-10-27

申请号：US11245815

申请日：2005-10-07

申请人： Osamu Yoshida ,  Hiroshi Hashimoto

发明人： Osamu Yoshida ,  Hiroshi Hashimoto

IPC分类号： F16H7/08

CPC分类号： F16H7/0836 ,  F16H2007/0806 ,  F16H2007/0812 ,  F16H2007/0817 ,  F16H2007/0859

摘要： In a hydraulic tensioner, a deairing valve unit, for releasing air mixed with oil in the high pressure oil chamber of the tensioner, comprises a check ball, a retainer, which envelops the check ball, but allows the check ball to move freely between an inflow end and an outflow end of a retainer passage, and a cylindrical ball seat press-fit into to a recess formed in a front end of the retainer. The deairing valve unit communicates with an exhaust vent formed in the front end of the plunger. A ball biasing spring is optionally provided to bias the check ball toward the ball seat.

摘要翻译： 在液压张紧器中，用于释放与张紧器的高压油室中的油混合的脱气阀单元包括止回球，保持器，其包围止回球，但允许止回球在一个 保持器通道的流入端和流出端，以及压入到形成在保持器的前端中的凹部中的圆柱形球座。 脱气阀单元与形成在柱塞前端的排气口连通。 可选地提供球偏置弹簧以将止回球偏向球座。

公开(公告)号：US20080261737A1

公开(公告)日：2008-10-23

申请号：US11998517

申请日：2007-11-30

申请人： Osamu Yoshida ,  Hiroshi Hashimoto ,  Tsutomu Namie ,  Hiroyuki Miyake

发明人： Osamu Yoshida ,  Hiroshi Hashimoto ,  Tsutomu Namie ,  Hiroyuki Miyake

IPC分类号： F16H7/08

CPC分类号： F16H7/0836 ,  F16H7/0848 ,  F16H2007/0806 ,  F16H2007/0853 ,  F16H2007/0859

摘要： A check valve unit in a hydraulic tensioner comprises a check ball, a steel ball guide having an inner wall allowing a limited range of longitudinal movement of the ball but restricting its lateral movement, a steel retainer attached to the high pressure oil chamber side of the ball guide, and a steel ball seat attached to the oil supply side of the ball guide. Bulged portions formed on an outer surface of the ball guide are press-fit into the plunger-accommodating hole of the tensioner.

摘要翻译： 液压张紧器中的单向阀单元包括止回球，具有允许球的纵向运动的有限范围但限制其横向运动的内壁的钢球导向件，附接到所述球的所述高压油室侧的钢保持器 球导向件，以及附着在球导向件的供油侧的钢球座。 形成在球导向件的外表面上的膨胀部分压配合到张紧器的柱塞容纳孔中。

公开(公告)号：US06994644B2

公开(公告)日：2006-02-07

申请号：US10620753

申请日：2003-07-16

申请人： Osamu Yoshida ,  Hiroshi Hashimoto

发明人： Osamu Yoshida ,  Hiroshi Hashimoto

IPC分类号： E16H7/08

CPC分类号： F16H7/0848 ,  F16H2007/0806 ,  F16H2007/0812 ,  F16H2007/0853 ,  F16H2007/0859

摘要： In a chain tensioner comprising a plunger having toothed racks engageable with wedge-shaped cams which cooperate with oblique cam-guiding surfaces, the cam-guiding surfaces are formed on a cam-receiving ring disposed in an enlarged part of the cam-receiving hole adjacent the front end of the tensioner housing, and axially movable, through a limited distance, in a space between a shoulder and a seal cap. The axially movable cam-receiving ring increases both the minimum and maximum backlash distances of the plunger, thereby making it possible for the tensioner to accommodate different chain conditions by changing the axial dimensions of the cam-receiving ring, or the space in which it moves, instead of, or in addition to, modifying the angle of the cam-guiding surfaces.

摘要翻译： 在具有可与楔形凸轮啮合的齿形齿条的活塞的链条张紧器中，所述楔形凸轮与倾斜凸轮引导表面配合，凸轮引导表面形成在凸轮接收环上，所述凸轮接收环设置在相邻的凸轮接收孔的扩大部分中 张紧器壳体的前端，并且在肩部和密封帽之间的空间中可轴向移动，限制距离。 轴向可移动的凸轮接收环增加柱塞的最小和最大间隙距离，从而使得张紧器可以通过改变凸轮接收环的轴向尺寸或其移动的空间来适应不同的链条条件 ，而不是或改变凸轮引导表面的角度。

公开(公告)号：US20070249444A1

公开(公告)日：2007-10-25

申请号：US11245815

申请日：2005-10-07

申请人： Osamu Yoshida ,  Hiroshi Hashimoto

发明人： Osamu Yoshida ,  Hiroshi Hashimoto

IPC分类号： F16H7/08

CPC分类号： F16H7/0836 ,  F16H2007/0806 ,  F16H2007/0812 ,  F16H2007/0817 ,  F16H2007/0859

摘要： In a hydraulic tensioner, a deairing valve unit, for releasing air mixed with oil in the high pressure oil chamber of the tensioner, comprises a check ball, a retainer, which envelops the check ball, but allows the check ball to move freely between an inflow end and an outflow end of a retainer passage, and a cylindrical ball seat press-fit into to a recess formed in a front end of the retainer. The deairing valve unit communicates with an exhaust vent formed in the front end of the plunger. A ball biasing spring is optionally provided to bias the check ball toward the ball seat.

摘要翻译： 在液压张紧器中，用于释放与张紧器的高压油室中的油混合的脱气阀单元包括止回球，保持器，其包围止回球，但允许止回球在一个 保持器通道的流入端和流出端，以及压入到形成在保持器的前端中的凹部中的圆柱形球座。 脱气阀单元与形成在柱塞前端的排气口连通。 可选地提供球偏置弹簧以将止回球偏向球座。

公开(公告)号：US06966858B2

公开(公告)日：2005-11-22

申请号：US10621135

申请日：2003-07-16

申请人： Osamu Yoshida ,  Hiroshi Hashimoto

发明人： Osamu Yoshida ,  Hiroshi Hashimoto

IPC分类号： F16H7/08

CPC分类号： F16H7/0848 ,  F16H2007/0806 ,  F16H2007/0812 ,  F16H2007/0853 ,  F16H2007/0859

摘要： A chain tensioner comprising a housing, a plunger having racks formed on its opposite sides, a protrusion biasing spring, cams arranged in oblique guide grooves in the housing and engageable with the racks of the plunger, and a spacer supporting a cam biasing spring. The minimum backlash distance X is equal to h/tan θ, where h is the height of the rack teeth, and θ is the angle of the cam guide surfaces relative to the protruding direction of the plunger. The angle θ is between 15° and 70°. The tensioner prevents wobbling noises produced by a timing chain on starting an engine, prevents whistling sounds due to excess tensioning of the chain, and allows backlash to be readily set to accommodate the requirements of a wide variety of engines.

摘要翻译： 链条张紧器，其包括壳体，具有形成在其相对侧上的齿条的柱塞，突起偏置弹簧，布置在壳体中的倾斜导向槽中并可与柱塞的齿条接合的凸轮以及支撑凸轮偏置弹簧的间隔件。 最小间隙距离X等于h /tanθ，其中h是齿条齿的高度，θ是凸轮引导表面相对于柱塞突出方向的角度。 角度θ在15°和70°之间。 张紧器防止起动发动机时的正时链产生的摆动噪声，防止由于链条的过度张紧引起的呼啸声，并允许容易地设定间隙以适应各种发动机的要求。

公开(公告)号：US07458909B2

公开(公告)日：2008-12-02

申请号：US10679644

申请日：2003-10-06

申请人： Hiroshi Hashimoto ,  Osamu Yoshida ,  Masaki Kato

发明人： Hiroshi Hashimoto ,  Osamu Yoshida ,  Masaki Kato

IPC分类号： F16H7/08

CPC分类号： F16H7/0848 ,  F16H2007/0806 ,  F16H2007/0812 ,  F16H2007/0853 ,  F16H2007/0859 ,  F16H2007/0878

摘要： A tensioner, in which an inner body and an outer body, which can deal with tensioner mounting forms and tension imparting functions required from various engines can be assembled and its efficient production and reliable assembling without wobbling and clattering can be performed. A body 22 of a tensioner 21 is composed of plastic outer and inner bodies 23 and 24 formed by different members respectively. The outer body 23 is provided with a tensioner mounting means and an inner body fitting hole 23a, the inner body is provided with a plunger accommodating hole 24a, a plunger 26 biased by a compression spring 27 is slidably fitted into the plunger accommodating hole 24a, a bottom portion of the plunger accommodating hole 24a is provided with a check valve 31, and at least the inner body 24, the check valve 31, the compression spring 27 and the plunger 26 form an inner body side unit 33, which imparts proper tension. Further, the inner body 24, which forms the inner body side unit 33 is adapted to be fixed into the inner body fitting hole 23a of the outer body 23 by heat welding.

摘要翻译： 可以组装可以组装可以处理来自各种发动机所需的张紧器安装形式和张力赋予功能的内体和外体的张紧器，并且可以进行其有效的生产和可靠的组装而不会发生摆动和咔嗒声。 张紧器21的主体22由分别由不同构件形成的塑料外壳体23和内体24构成。 外筒体23设置有张紧器安装构件和内体嵌合孔23a，内体设置有柱塞容纳孔24a，由压缩弹簧27偏压的柱塞26可滑动地嵌合在柱塞容纳孔24a中， 柱塞容纳孔24a的底部设有止回阀31，并且至少内体24，止回阀31，压缩弹簧27和柱塞26形成内体侧单元33，其赋予适当的张力 。 此外，形成内体侧单元33的内体24通过热焊接固定在外体23的内体嵌合孔23a内。