公开(公告)号：US09062741B2

公开(公告)日：2015-06-23

申请号：US13409592

申请日：2012-03-01

申请人： Yuji Kurematsu ,  Kaori Mori ,  Munehiro Maeda ,  Osamu Yoshida

发明人： Yuji Kurematsu ,  Kaori Mori ,  Munehiro Maeda ,  Osamu Yoshida

IPC分类号： F16H7/08

CPC分类号： F16H7/0848 ,  F16H7/08 ,  F16H2007/0806 ,  F16H2007/0812 ,  F16H2007/0853 ,  F16H2007/0859

摘要： A ratchet-type tensioner, comprising: a housing; a plunger supported by the housing for movement in opposite advancing and setback directions, the plunger having rack teeth provided thereon, and being arranged to advance with respect to the housing along the advancing direction for applying tension to a traveling transmission medium engaged with rotating members; and a ratchet mechanism capable of restricting the plunger from setting back due to a reaction force acting in a setback direction from the transmission medium; said ratchet mechanism comprising: a ratchet-receiving hole provided within the housing; a ratchet element slidable in the ratchet-receiving hole and movable in a sliding direction transverse to the advancing and setback directions; ratchet teeth on the ratchet element engageable with the rack teeth of the plunger; and a ratchet-biasing means for biasing the ratchet element in an engaging direction along the sliding direction so that the ratchet teeth engage with the rack teeth; said ratchet mechanism being capable of restricting the plunger from being set back by a reaction force acting in a setback direction from the transmission medium; said rack teeth having a concave-convex form and being composed of stop surfaces facing in the setback direction and sliding surfaces facing in the advance direction, said sliding surfaces being inclined relative to the sliding direction and facing in a disengaging direction opposite from the engaging direction; each of said sliding surfaces having an entry starting location which the ratchet teeth first engage when starting to enter the rack teeth, and an entry ending location where the engagement of the ratchet teeth with the rack teeth ends; each said sliding surface being a curved surface, all of said curved surface, between said entry starting location and said entry ending location of said sliding surface, bulging in the advancing direction of the plunger and in the disengaging direction of the ratchet element from an imaginary reference plane intersecting said entry starting location and said entry ending location of said sliding surface and perpendicular to another imaginary plane to which the advancing and setback direction of the plunger and the sliding direction of the ratchet element are parallel; and at least a part of said curve midway along said curve between the entry starting location and the entry ending location is convex.

公开(公告)号：US20130053197A1

公开(公告)日：2013-02-28

申请号：US13597383

申请日：2012-08-29

申请人： Masahiko Konno ,  Kaori Mori ,  Yuji Kurematsu

发明人： Masahiko Konno ,  Kaori Mori ,  Yuji Kurematsu

IPC分类号： F16H7/18

CPC分类号： F16H7/18 ,  F16H2007/0872

摘要： In a transmission guide, a synthetic resin shoe and a synthetic resin base are integrally molded by two part molding. Strips projecting from a supporting surface of the base extend in parallel to the longitudinal direction of the base, and concave grooves formed in the shoe, which also extend in parallel to the longitudinal direction of the base and of the shoe, receive the strips of the base and are fused with the base.

摘要翻译： 在传动导向件中，通过两部分成型将合成树脂鞋和合成树脂基底一体地模制。 从基座的支撑面突出的条带平行于基部的纵向方向延伸，并且形成在鞋中的凹槽也平行于基部和鞋的纵向方向延伸， 并与基底融合。

公开(公告)号：US20130035184A1

公开(公告)日：2013-02-07

申请号：US13558994

申请日：2012-07-26

申请人： Masahiko Konno ,  Kaori Mori ,  Yuji Kurematsu

发明人： Masahiko Konno ,  Kaori Mori ,  Yuji Kurematsu

IPC分类号： F16H7/08 ,  F16H7/18

CPC分类号： F16H7/18 ,  F16H2007/0872

摘要： The synthetic resin guide in accordance with the invention comprises an elongated synthetic resin shoe having a front surface for sliding contact with the transmission medium and a back surface opposite from the front surface and a plurality of engaging members disposed in longitudinally spaced relationship to one another. The guide also comprises an elongated synthetic resin base in contact with the back surface of the shoe and supporting the shoe, the base having a plurality of longitudinally spaced engaged portions each of which engages with one of the engaging members. One engaging member is fixed to the engaged portion with which it is engaged. The other engaging members are longitudinally movable relative to the engaged portions with which they are engaged. Thus, the guide allows longitudinal thermal expansion and contraction of the shoe relative to the base.

摘要翻译： 根据本发明的合成树脂引导件包括细长的合成树脂靴，其具有用于与传动介质滑动接触的前表面和与前表面相对的后表面，以及多个彼此纵向间隔开设置的接合构件。 引导件还包括与鞋的后表面接触并支撑鞋的细长的合成树脂基底，该基部具有多个纵向间隔开的接合部分，每个接合部分与接合构件中的一个接合。 一个接合构件固定到与其接合的接合部分。 其他接合构件相对于它们接合的接合部分可纵向移动。 因此，引导件允许鞋相对于底座的纵向热膨胀和收缩。

公开(公告)号：US20110183796A1

公开(公告)日：2011-07-28

申请号：US13011321

申请日：2011-01-21

申请人： Yuji Kurematsu ,  Manabu Hirayama

发明人： Yuji Kurematsu ,  Manabu Hirayama

IPC分类号： F16H7/08

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

摘要： In a ratchet-type tensioner having a toothed ratchet piston biased toward a rack of teeth formed on a protruding plunger in a direction transverse to the direction of plunger movement, the rack teeth and the ratchet teeth are mutually engageable and inclined at angles such that the biasing force urging the teeth of the ratchet piston into engagement with the rack teeth is sufficient to block retraction of the plunger during engine start-up but can be overcome when chain tension becomes excessive during engine operation following engine start-up.

摘要翻译： 在棘轮式张紧器中，齿形棘轮活塞朝向横向于柱塞运动方向的突出柱塞形成的齿形齿轮偏置，齿条齿和棘轮齿可相互接合并以这样的角度倾斜， 推动棘轮活塞的齿与齿条齿接合的偏压力足以阻止发动机起动时柱塞的缩回，但是当发动机起动后的发动机运转时链条张力过大时可以克服。

公开(公告)号：US20090286639A1

公开(公告)日：2009-11-19

申请号：US12408068

申请日：2009-03-20

申请人： Shunji Sakura ,  Akira Hirai ,  Yuji Kurematsu

发明人： Shunji Sakura ,  Akira Hirai ,  Yuji Kurematsu

IPC分类号： F16H55/30

CPC分类号： F16H55/30 ,  F16H55/08 ,  F16H2055/306

摘要： A sprocket for a chain drive using a roller or bushing chain has a plurality of different pitch angles, including both pitch angles larger than the standard pitch angle, and pitch angles smaller than the standard pitch angle. The number of pitch angles in the sprocket larger than the standard pitch angle is greater than the number of pitch angles in the sprocket smaller than the standard pitch angle. The sprocket teeth are integrally molded with the sprocket by sintering.

摘要翻译： 用于使用辊或衬套链的链条驱动的链轮具有多个不同的桨距角，包括两个桨距角大于标准桨距角，以及俯仰角小于标准俯仰角。 大于标准桨距角的链轮中的桨距角的数量大于链轮中的桨距角小于标准桨距角的数量。 链轮通过烧结与链轮整体模制。

公开(公告)号：US20070029696A1

公开(公告)日：2007-02-08

申请号：US11481361

申请日：2006-07-05

申请人： Yuji Kurematsu ,  Toshihiko Komiyama ,  Kenji Mitsuhashi ,  Toshiji Aota

发明人： Yuji Kurematsu ,  Toshihiko Komiyama ,  Kenji Mitsuhashi ,  Toshiji Aota

IPC分类号： B28B3/00 ,  B29C43/48

CPC分类号： F16H7/18 ,  F16H2007/0872

摘要： A guide for a traveling transmission medium such as a timing chain comprises a resin shoe for sliding contact with the transmission medium, supported on a base frame having an two flanges and a web in an I-shaped cross-section. The base frame is produced from aluminum by die casting, using a three-part mold. Two parts of the mold cooperate to form a part of the mold cavity that forms one of the flanges and the web of the base frame, and a third part of the mold cooperates with the first two parts to form a part of the cavity in which the other flange of the base frame is formed without a draft.

摘要翻译： 用于诸如正时链条的行进传动介质的引导件包括用于与传动介质滑动接触的树脂靴，支撑在具有两个凸缘的基座框架和具有I形横截面的腹板。 底座通过压铸由铝制成，使用三部分模具。 模具的两个部分协作以形成模腔的一部分，其形成凸缘和基架的腹板之一，并且模具的第三部分与前两个部分配合以形成空腔的一部分，其中 底架的另一个凸缘形成没有牵伸。

公开(公告)号：US08888628B2

公开(公告)日：2014-11-18

申请号：US13558994

申请日：2012-07-26

申请人： Masahiko Konno ,  Kaori Mori ,  Yuji Kurematsu

发明人： Masahiko Konno ,  Kaori Mori ,  Yuji Kurematsu

IPC分类号： F16H7/08 ,  F16H7/18

CPC分类号： F16H7/18 ,  F16H2007/0872

摘要： The synthetic resin guide in accordance with the invention comprises an elongated synthetic resin shoe having a front surface for sliding contact with the transmission medium and a back surface opposite from the front surface and a plurality of engaging members disposed in longitudinally spaced relationship to one another. The guide also comprises an elongated synthetic resin base in contact with the back surface of the shoe and supporting the shoe, the base having a plurality of longitudinally spaced engaged portions each of which engages with one of the engaging members. One engaging member is fixed to the engaged portion with which it is engaged. The other engaging members are longitudinally movable relative to the engaged portions with which they are engaged. Thus, the guide allows longitudinal thermal expansion and contraction of the shoe relative to the base.

摘要翻译： 根据本发明的合成树脂引导件包括细长的合成树脂靴，其具有用于与传动介质滑动接触的前表面和与前表面相对的后表面，以及多个彼此纵向间隔开设置的接合构件。 引导件还包括与鞋的后表面接触并支撑鞋的细长的合成树脂基底，该基部具有多个纵向间隔开的接合部分，每个接合部分与接合构件中的一个接合。 一个接合构件固定到与其接合的接合部分。 其他接合构件相对于它们接合的接合部分可纵向移动。 因此，引导件允许鞋相对于底座的纵向热膨胀和收缩。

公开(公告)号：US20120309570A1

公开(公告)日：2012-12-06

申请号：US13477345

申请日：2012-05-22

申请人： Yuji Kurematsu ,  Osamu Yoshida ,  Munehiro Maeda ,  Akira Ishii

发明人： Yuji Kurematsu ,  Osamu Yoshida ,  Munehiro Maeda ,  Akira Ishii

IPC分类号： F16H7/08

CPC分类号： F16H7/0848 ,  F16H2007/0806 ,  F16H2007/0855 ,  F16H2007/0859 ,  F16H2007/0893

摘要： In a ring-type tensioner, an expansible elastic ring disposed in a groove formed in the wall of a plunger-accommodating hole cooperates with teeth formed on the plunger to restrict axial movement of the plunger. The ring and the groove in the wall of the plunger-accommodating hole have flat radial surfaces for mutual engagement. However the ring also has oblique plunger-tooth engaging surfaces. The ring has manipulable end parts that can be locked in fixed relation to each other by a tool to secure the plunger against axial movement. The tool can also be inserted into a gap between the manipulable end parts to expand the ring and thereby release the plunger.

摘要翻译： 在环形张紧器中，设置在形成在柱塞容纳孔的壁中的槽中的可膨胀弹性环与形成在柱塞上的齿配合以限制柱塞的轴向运动。 柱塞容纳孔的壁中的环和槽具有相互接合的平坦的径向表面。 然而，该环也具有倾斜的柱塞 - 齿啮合表面。 环具有可操纵的端部，其可以通过工具彼此固定地相互锁定，以将柱塞固定在轴向运动上。 工具也可以插入到可操纵的端部之间的间隙中以使环膨胀，从而释放柱塞。

公开(公告)号：US20120244975A1

公开(公告)日：2012-09-27

申请号：US13409592

申请日：2012-03-01

申请人： Yuji Kurematsu ,  Kaori Mori ,  Munehiro Maeda ,  Osamu Yoshida

发明人： Yuji Kurematsu ,  Kaori Mori ,  Munehiro Maeda ,  Osamu Yoshida

IPC分类号： F16H7/08

CPC分类号： F16H7/0848 ,  F16H7/08 ,  F16H2007/0806 ,  F16H2007/0812 ,  F16H2007/0853 ,  F16H2007/0859

摘要： A ratchet mechanism of the ratchet tensioner comprises a toothed ratchet element slidable in a housing and movable in a sliding direction, a plunger movable in an advance/setback direction and having rack teeth engageable by the teeth of the ratchet element, and a ratchet-biasing spring for biasing the ratchet element so that its teeth engage the rack teeth. The rack teeth have stop surfaces facing in the setback direction and sliding surfaces facing the advancing direction. The sliding surfaces are curved surfaces bulging in the advancing direction and in the direction of disengagement of the ratchet element from the rack teeth, the bulge being in an area extending from an entry starting location to an entry ending location.

摘要翻译： 棘轮张紧器的棘轮机构包括可在壳体中滑动并可在滑动方向上移动的齿形棘轮元件，柱塞可在提前/倒退方向上移动并且具有可由棘轮元件的齿啮合的齿条齿轮和棘轮偏置 弹簧用于偏压棘轮元件，使其齿接合齿条齿。 齿条齿具有面向倒退方向的止动表面和面向前进方向的滑动表面。 滑动表面是在前进方向和棘齿元件与齿条齿分离的方向上凸出的弯曲表面，凸起位于从进入开始位置延伸到入口终点位置的区域中。

公开(公告)号：US20120225743A1

公开(公告)日：2012-09-06

申请号：US13401160

申请日：2012-02-21

申请人： Akira Ishii ,  Munehiro Maeda ,  Osamu Yoshida ,  Yuji Kurematsu

发明人： Akira Ishii ,  Munehiro Maeda ,  Osamu Yoshida ,  Yuji Kurematsu

IPC分类号： F16H7/08

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

摘要： A ratchet-type tensioner capable of restricting setback of a plunger includes a ratchet mechanism that allows setback of the plunger by sliding a ratchet element in a disengaging direction to disengage ratchet teeth from rack teeth when a reaction force acts on the plunger as a result of excessive chain tension. The ratchet element is slidable in a ratchet-receiving hole, and an inclination suppressing structure that prevents the ratchet element from becoming skewed in the ratchet receiving hole to an extent such that its forward end contacts one side of the hole while its rearward end contacts the opposite sides of the hole.

摘要翻译： 能够限制柱塞的棘爪的棘轮式张紧器包括棘轮机构，其通过在棘爪元件沿分离方向滑动以使得棘爪齿与齿条齿脱离，从而当反作用力作用在柱塞上时由于作用 链条张力过大 棘轮元件可在棘轮接收孔中滑动，并且该倾斜抑制结构防止棘轮元件在棘轮接收孔中歪斜到一定程度，使得其前端接触孔的一侧，同时其后端接触 孔的对面。