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1. 发明申请

US20100298077A1 RATCHET-TYPE TENSIONER 审中-公开
标题翻译：手摇式张紧器
公开(公告)号：US20100298077A1
公开(公告)日：2010-11-25
申请号：US12762433
申请日：2010-04-19
申请人： Manabu Hirayama , Takahiro Matsushita , Katsuya Nakakubo , Yuji Kurematsu , Osamu Yoshida , Shintarou Yoshimoto
发明人： Manabu Hirayama , Takahiro Matsushita , Katsuya Nakakubo , Yuji Kurematsu , Osamu Yoshida , Shintarou Yoshimoto
IPC分类号： F16H7/08
CPC分类号： F01L1/02 , F01L1/022 , F16H7/0848 , F16H2007/0806 , F16H2007/0812 , F16H2007/0853 , F16H2007/0859 , F16H2007/0893
摘要： In a ratchet-type tensioner, a rocking ratchet pawl is released from a rack of teeth on a tensioner plunger following engine start-up by a hydraulically operated pin slidable in a pin hole and caused to protrude therefrom by oil under pressure received directly from an external oil supply, or alternatively from the tensioner's high pressure oil chamber through a passage in the tensioner housing. Optionally, an orifice can be provided within the pin hole to control flow of oil when the supply is excessive and to avoid leakage when the supply is insufficient.
摘要翻译：在棘轮式张紧器中，摇动棘爪在发动机起动之后从张紧器柱塞上的齿条上释放，液压操作销可在销孔中滑动并且在直接从或者通过张紧器壳体中的通道从张紧器的高压油室中提供。可选地，可以在销孔内设置孔口，以在供应过量时控制油的流动，并且在供应不足时避免泄漏。

2. 发明申请

US20100298078A1 RATCHET-TYPE TENSIONER 审中-公开
标题翻译：手摇式张紧器
公开(公告)号：US20100298078A1
公开(公告)日：2010-11-25
申请号：US12770871
申请日：2010-04-30
申请人： Manabu Hirayama , Takahiro Matsushita , Katsuya Nakakubo , Yuji Kurematsu , Osamu Yoshida , Shintarou Yoshimoto
发明人： Manabu Hirayama , Takahiro Matsushita , Katsuya Nakakubo , Yuji Kurematsu , Osamu Yoshida , Shintarou Yoshimoto
IPC分类号： F16H7/08
CPC分类号： F01L1/02 , F01L1/022 , F16H7/0848 , F16H2007/0806 , F16H2007/0812 , F16H2007/0853 , F16H2007/0859
摘要： In a ratchet tensioner, a linearly moving ratchet for engagement with rack teeth on a plunger is operated a piston that is spring-biased in a direction to engage the ratchet teeth with the rack, and movable by oil pressure in a direction to disengage the ratchet teeth from the rack. The piston is located within a hole in the housing and, with that hole, forms a second high pressure oil chamber that can receive oil through an oil supply path independent of the oil supply path that carries oil to a first high pressure oil chamber formed by the plunger and the tensioner housing.
摘要翻译：在棘轮张紧器中，用于与柱塞上的齿条啮合的直线运动的棘轮被操作，该活塞在与齿条接合棘轮齿的方向上被弹簧偏置，并且通过油压沿使棘轮脱离的方向可移动牙齿从机架上。活塞位于壳体的孔内，并且与该孔形成第二高压油室，该第二高压油室能够通过独立于供油路径的供油路径接收油，将油运送到第一高压油室，该第一高压油室由柱塞和张紧器壳体。

3. 发明授权

US09062741B2 Ratchet-type tensioner 有权
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.

4. 发明授权

US08821326B2 Ratchet-type tensioner 有权
标题翻译：棘轮式张紧器
公开(公告)号：US08821326B2
公开(公告)日：2014-09-02
申请号：US13474792
申请日：2012-05-18
申请人： Osamu Yoshida , Yuji Kurematsu , Munehiro Maeda , Akira Ishii
发明人： Osamu Yoshida , Yuji Kurematsu , Munehiro Maeda , Akira Ishii
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 plunger with rack teeth formed thereon and a piston with ratchet teeth that engage the rack teeth, the ratchet teeth can be disengaged from the rack teeth by insertion of a tool through a tool insertion hole in the tensioner housing and exerting a prying action on the toothed end of the piston to move the piston away from the plunger. Alternatively if an oblique camming surface is formed on the toothed end of the piston, the ratchet teeth can be disengaged from the rack teeth by pushing the tool inward against the oblique camming surface. The piston and the hole in which it slides are shaped to prevent rotation of the piston. The ratchet teeth on the piston and the rack teeth on the plunger can be oblique to allow setback of the plunger when excessive force is exerted on the plunger.
摘要翻译：在具有形成有齿条齿的柱塞的棘轮式张紧器和具有与齿条齿接合的棘轮齿的活塞的棘轮式张紧器中，通过将工具插入到张紧器壳体中的工具插入孔中，棘轮齿可以与齿条齿脱离并且在活塞的齿端上施加撬动作用以将活塞移离柱塞。或者，如果在活塞的齿端上形成倾斜的凸轮表面，则可以通过将工具向内推靠在倾斜凸轮表面上而将棘轮齿与齿条齿脱离。活塞及其滑动的孔被成形以防止活塞旋转。活塞上的棘齿和柱塞上的齿条齿可以倾斜，以便在柱塞上施加过大的力时允许柱塞的遏制。

5. 发明授权

US08740736B2 Ring-type tensioner 有权
标题翻译：环型张紧器
公开(公告)号：US08740736B2
公开(公告)日：2014-06-03
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： F16H7/22 , 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。

6. 发明申请

US20130310206A1 RATCHET-TYPE TENSIONER 有权
标题翻译：手摇式张紧器
公开(公告)号：US20130310206A1
公开(公告)日：2013-11-21
申请号：US13474792
申请日：2012-05-18
申请人： Osamu Yoshida , Yuji Kurematsu , Munehiro Maeda , Akira Ishii
发明人： Osamu Yoshida , Yuji Kurematsu , Munehiro Maeda , Akira Ishii
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 plunger with rack teeth formed thereon and a piston with ratchet teeth that engage the rack teeth, the ratchet teeth can be disengaged from the rack teeth by insertion of a tool through a tool insertion hole in the tensioner housing and exerting a prying action on the toothed end of the piston to move the piston away from the plunger. Alternatively if an oblique camming surface is formed on the toothed end of the piston, the ratchet teeth can be disengaged from the rack teeth by pushing the tool inward against the oblique camming surface. The piston and the hole in which it slides are shaped to prevent rotation of the piston. The ratchet teeth on the piston and the rack teeth on the plunger can be oblique to allow setback of the plunger when excessive force is exerted on the plunger.
摘要翻译：在具有形成有齿条齿的柱塞的棘轮式张紧器和具有与齿条齿接合的棘轮齿的活塞的棘轮式张紧器中，通过将工具插入到张紧器壳体中的工具插入孔中，棘轮齿可以与齿条齿脱离并且在活塞的齿端上施加撬动作用以将活塞移离柱塞。或者，如果在活塞的齿端上形成倾斜的凸轮表面，则可以通过将工具向内推靠在倾斜凸轮表面上而将棘轮齿与齿条齿脱离。活塞及其滑动的孔被成形以防止活塞旋转。活塞上的棘齿和柱塞上的齿条齿可以倾斜，以便在柱塞上施加过大的力时允许柱塞的遏制。

7. 发明申请

US20130288836A1 HYDRAULIC TENSIONER 有权
标题翻译：液压张紧器
公开(公告)号：US20130288836A1
公开(公告)日：2013-10-31
申请号：US13456943
申请日：2012-04-26
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： F16H7/0836 , F16H2007/0806 , F16H2007/0817 , F16H2007/0853 , F16H2007/0859 , F16H2007/0893
摘要： Deaeration of the high pressure oil chamber of a hydraulic tensioner takes place though a helical orifice formed by opposed flanks of the threads of a threaded hole in the tensioner housing and the threads of a screw inserted into the hole. The opposed flanks are maintained in spaced relationship by a force exerted by a spring washer disposed between the head of the screw and a surface of the tensioner housing surrounding the opening of the threaded hole. The flank of the thread of the hole that forms part of the boundary of the helical orifice can have a concave curvature in order to increase the aperture of the air flow path. A groove in the surface surrounding the opening of the threaded hole prevents the washer from sealing off the flow of air. This groove is disposed with its exit end at a level above its entry end.
摘要翻译：液压张紧器的高压油室的脱气通过由张紧器壳体中的螺纹孔的螺纹的相对侧面和插入孔中的螺钉的螺纹形成的螺旋孔而发生。相对的侧面通过由设置在螺钉的头部和围绕螺纹孔的开口的张紧器壳体的表面之间的弹簧垫圈施加的力保持间隔的关系。形成螺旋孔边界部分的孔的螺纹的侧面可以具有凹曲率，以便增加空气流路的孔径。在围绕螺纹孔的开口的表面中的凹槽防止垫圈密封空气流。该凹槽设置成其出口端处于其入口端上方的高度。

8. 发明授权

US08419575B2 Ball-type tensioner 有权
标题翻译：球型张紧器
公开(公告)号：US08419575B2
公开(公告)日：2013-04-16
申请号：US13081124
申请日：2011-04-06
申请人： Osamu Yoshida , Yuji Kurematsu , Atsushi Hayami
发明人： Osamu Yoshida , Yuji Kurematsu , Atsushi Hayami
IPC分类号： F16H7/08
CPC分类号： F16H7/0848 , F16H2007/0806 , F16H2007/0812 , F16H2007/0853 , F16H2007/0859
摘要： A tensioner for a chain or similar power transmission medium comprises a spring-biased plunger having annular rack teeth with gradually sloping forward surfaces and steeper rearward surfaces. The teeth are engaged by radially movable balls received in inclined grooves in an axially movable annular ball seat disposed in an annular groove formed in the wall of a plunger-accommodating hole in a tensioner housing. The bottoms of the inclined grooves face a steep rearward surface of a rack tooth, and the annular ball seat is axially movable in the annular groove and biased in the plunger protruding direction by a spring that exerts a biasing force greater than the biasing force exerted on the plunger. The balls and the movable annular ball seat block retraction of the plunger on engine start-up, but permit retraction when excessive force is imparted to the plunger while the plunger is in a protruding condition.
摘要翻译：用于链式或类似动力传递介质的张紧器包括具有环形齿条齿的弹簧偏置柱塞，其具有逐渐倾斜的前表面和更陡的后表面。这些齿通过容纳在设置在形成在张紧器壳体中的柱塞容纳孔的壁中的环形槽中的可轴向移动的环形球座中的倾斜槽中接收。倾斜槽的底部面向齿条齿的陡峭的后表面，并且环形球座可在环形槽中轴向移动，并通过弹簧施加偏压力，该弹簧施加在柱塞突出方向上，该弹簧施加大于施加在柱塞。球和可动环形球座座在发动机启动时柱塞缩回，但是当柱塞处于突出状态时，当柱塞施加过大的力时允许回缩。

9. 发明申请

US20120309570A1 RING-TYPE TENSIONER 有权
标题翻译：环型张紧器
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。

10. 发明申请

US20120244975A1 RATCHET-TYPE TENSIONER 有权
标题翻译：手摇式张紧器
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。

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