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：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。

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。

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。

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。

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。

公开(公告)号：US20120196709A1

公开(公告)日：2012-08-02

申请号：US13363646

申请日：2012-02-01

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

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

IPC分类号： F16H7/08

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

摘要： There is provided a ratchet-type tensioner whose spring stopping washer for seating a ratchet biasing spring is rigidly and readily assembled to a ratchet-receiving hole so as not to fall out of the ratchet-receiving hole and which reduces flapping noise and prevents seizure of the plunger by securely and stably operating a ratchet mechanism in operating an engine. The ratchet-type tensioner 100 is arranged so that the spring stopping washer has a C-ring anchored in the rear-end area of the ratchet-receiving hole by fitting in a diameter-reduced state and by enlarging its diameter within an anchoring circumferential groove of the ratchet-receiving hole and a spring stopping piece extended from the C-ring to a ring center area to seat the ratchet biasing spring.

摘要翻译： 提供了一种棘轮式张紧器，其弹簧止动垫圈用于安置棘轮偏压弹簧，刚性且容易地组装到棘轮接收孔，以便不会从棘轮接收孔中脱落，并且可以减少颤动噪声并防止 该活塞通过在操作发动机中可靠且稳定地操作棘轮机构。 棘轮式张紧器100被布置成使得弹簧止动垫圈具有通过配合直径减小状态而锚定在棘轮容纳孔的后端区域中的C形环，并且通过将其直径扩大到锚定周向槽内 的棘轮接收孔和从C形环延伸到环形中心区域的弹簧止动件以安置棘轮偏置弹簧。

公开(公告)号：US08939856B2

公开(公告)日：2015-01-27

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。 该凹槽的出口端处于其入口端上方的高度处。

公开(公告)号：US08926460B2

公开(公告)日：2015-01-06

申请号：US13363646

申请日：2012-02-01

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

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

IPC分类号： F16H7/08

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

摘要： There is provided a ratchet-type tensioner whose spring stopping washer for seating a ratchet biasing spring is rigidly and readily assembled to a ratchet-receiving hole so as not to fall out of the ratchet-receiving hole and which reduces flapping noise and prevents seizure of the plunger by securely and stably operating a ratchet mechanism in operating an engine. The ratchet-type tensioner 100 is arranged so that the spring stopping washer has a C-ring anchored in the rear-end area of the ratchet-receiving hole by fitting in a diameter-reduced state and by enlarging its diameter within an anchoring circumferential groove of the ratchet-receiving hole and a spring stopping piece extended from the C-ring to a ring center area to seat the ratchet biasing spring.

摘要翻译： 提供了一种棘轮式张紧器，其弹簧止动垫圈用于安置棘轮偏压弹簧，刚性且容易地组装到棘轮接收孔，以便不会从棘轮接收孔中脱落，并且可以减少颤动噪声并防止 该活塞通过在操作发动机中可靠且稳定地操作棘轮机构。 棘轮式张紧器100被布置成使得弹簧止动垫圈具有通过配合直径减小状态而锚定在棘轮容纳孔的后端区域中的C形环，并且通过将其直径扩大到锚定周向槽内 的棘轮接收孔和从C形环延伸到环形中心区域的弹簧止动件以安置棘轮偏置弹簧。

公开(公告)号：US08734278B2

公开(公告)日：2014-05-27

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。