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公开(公告)号：US07727098B2
公开(公告)日：2010-06-01
申请号：US12081832
申请日：2008-04-22
申请人： Seiji Sato , Satoshi Kitano , Yoshiaki Ryouno
发明人： Seiji Sato , Satoshi Kitano , Yoshiaki Ryouno
IPC分类号： F16H7/08
CPC分类号： F16H7/0848 , F16H2007/0806 , F16H2007/0857
摘要： A chain tensioner includes a housing defining a cylinder chamber having a closed end. A cylindrical plunger having a closed front end is slidably received in the cylinder chamber. A nut member and a return spring are mounted in the cylinder chamber. The return spring biases the plunger outwardly of the housing to press its closed end against a pivotally supported chain guide. The nut member has a serration-shaped internal thread formed on the inner periphery thereof which is in threaded engagement with a serration-shaped external thread formed on the outer periphery of the screw rod. The screw rod is biased toward the closed end of the plunger by a rod spring. A damper is mounted between the front end of the screw rod and the closed front end of the plunger for damping, in cooperation with the return spring, a pushing force applied to the plunger, and for allowing the screw rod and the plunger to move relative to each other in a direction in which the distance between respective remote ends thereof decreases by an amount not less than an axial play present between the internal and external threads.
摘要翻译： 链条张紧器包括限定具有封闭端的气缸室的壳体。 具有封闭前端的圆柱形柱塞可滑动地容纳在气缸室中。 螺母构件和复位弹簧安装在气缸室中。 复位弹簧将柱塞向外偏压，使其封闭端抵靠枢转支承的链条导向件。 螺母构件具有形成在其内周上的锯齿状内螺纹，其与形成在螺杆的外周上的锯齿状外螺纹螺纹接合。 螺杆通过杆弹簧偏压到柱塞的封闭端。 阻尼器安装在螺杆的前端和柱塞的封闭前端之间，用于与复位弹簧配合，用于阻尼施加到柱塞上的推力，并使螺杆和柱塞相对移动 在其相应的远端之间的距离减小不小于内螺纹和外螺纹之间的轴向游隙的量的方向上彼此相对。
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公开(公告)号：US07559863B2
公开(公告)日：2009-07-14
申请号：US11892880
申请日：2007-08-28
IPC分类号： F16H7/08
CPC分类号： F16H7/0848 , F16H2007/0806 , F16H2007/0812 , F16H2007/0857 , F16H2007/0859
摘要： A stepped set groove having shallow and deep portions is formed in the inner periphery of a cylinder chamber formed in a housing of a chain tensioner near its open end. A radially and elastically deformable set ring having circumferentially separated ends is received in the set groove in a radially compressed state. The set ring has at the respective ends thereof a pair of grip portions which are received in a cutout formed in housing at its front end. By engaging the set ring in an engaging groove formed in the outer periphery of the plunger near its front end and the shallow portion, it is possible to keep the plunger pushed into the cylinder chamber. In this state, the chain tensioner is mounted in position. One of the grip portions is brought into abutment with one of the circumferentially opposed end walls of the cutout to prevent the plunger from rotating about its axis in such a direction that the axial gap between an internal thread of the plunger and an external thread of a screw rod inserted in the plunger disappears. Thus, it is possible to keep the axial gap larger than the axial distance by which the plunger has to be moved to move the set ring from the shallow portion into the deep portion. This makes it possible to disengage the set ring from the engaging groove by pushing the plunger into the cylinder chamber.
摘要翻译： 在靠近开口端的链式张紧器的壳体中形成的气缸室的内周形成有浅部和深部的台阶形槽。 具有周向分开的端部的径向和可弹性变形的固定环以径向压缩状态容纳在所述固定槽中。 固定环在其各自的端部处具有一对把手部分，其被容纳在其前端处形成在壳体中的切口中。 通过将固定环接合在靠近其前端和浅部的柱塞的外周形成的接合槽中，可以将柱塞保持在气缸室中。 在这种状态下，链条张紧器安装就位。 把手部分中的一个与切口的周向相对的端壁中的一个相接触，以防止柱塞绕其轴线旋转，使得柱塞的内螺纹和内螺纹之间的轴向间隙 插入柱塞的螺杆消失。 因此，可以保持轴向间隙大于柱塞必须移动的轴向距离，从而将固定环从浅部移动到深部。 这使得可以通过将柱塞推入气缸室来将固定环与接合槽分离。
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公开(公告)号：US20080280712A1
公开(公告)日：2008-11-13
申请号：US12149437
申请日：2008-05-01
申请人： Yoshiaki Ryouno , Seiji Sato , Satoshi Kitano , Kouichi Onimaru , Goro Nakao
发明人： Yoshiaki Ryouno , Seiji Sato , Satoshi Kitano , Kouichi Onimaru , Goro Nakao
IPC分类号： F16H7/08
CPC分类号： F16H7/0836 , F16H7/0848 , F16H2007/0806 , F16H2007/0814
摘要： A chain tensioner includes a housing defining a cylinder chamber. A plunger is mounted in the cylinder chamber so as to be slidable along an inner surface of the cylinder chamber. A return spring is mounted in the cylinder chamber to bias the plunger outwardly. The housing is formed with an oil supply passage communicating with a pressure chamber defined in the housing behind the plunger. A check valve is disposed at an oil exit of the oil supply passage and configured to close the oil supply passage when the pressure in the pressure chamber is higher than the pressure in the oil supply passage. The housing is formed with a threaded hole extending from an upper portion of an outer periphery of the housing to the pressure chamber. A screw has its external thread in threaded engagement with the internal thread of the threaded hole, whereby a gap, as an air bleed passage, is defined between the internal and external threads. The internal thread of the threaded hole has an internal diameter larger than an internal diameter of an internal thread under JIS.
摘要翻译： 链条张紧器包括限定气缸室的壳体。 柱塞安装在气缸室中，以便能够沿气缸室的内表面滑动。 复位弹簧安装在气缸室中以向外偏压柱塞。 壳体形成有供油通道，该供油通道与限定在柱塞后面的壳体中的压力室连通。 止回阀设置在供油通道的油出口处，并且构造成当压力室中的压力高于供油通道中的压力时关闭供油通道。 壳体形成有从壳体的外周的上部延伸到压力室的螺纹孔。 螺钉具有与螺纹孔的内螺纹螺纹接合的外螺纹，由此在内螺纹和外螺纹之间限定作为排气通道的间隙。 螺纹孔的内螺纹内径大于JIS内螺纹的内径。
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公开(公告)号：US20080139352A1
公开(公告)日：2008-06-12
申请号：US11987977
申请日：2007-12-06
申请人： Seiji Sato , Satoshi Kitano , Yoshiaki Ryouno , Kouichi Onimaru
发明人： Seiji Sato , Satoshi Kitano , Yoshiaki Ryouno , Kouichi Onimaru
IPC分类号： F16H7/08
CPC分类号： F16H7/0848 , F16H2007/0806 , F16H2007/0857
摘要： An auto-tensioner includes a housing having an open end and a closed bottom at another end. A cylindrical plunger is slidably inserted in the housing with its open end facing the closed bottom of the housing and its other end protruding from the housing. A ring-shaped seal member is mounted between the inner periphery of the housing and the outer periphery of the plunger for hermetically sealing oil in the housing. A screw rod and a nut member are mounted in the plunger so as to be coaxial with the plunger, with the nut member in threaded engagement with the screw rod. A return spring is mounted between the nut member and the plunger to bias the nut member and the plunger in a direction axially away from each other. A spring is mounted between the screw rod and the closed bottom of the housing to bias the screw rod in a direction away from the closed bottom of the housing.
摘要翻译： 自动张紧器包括在另一端具有开口端和封闭底部的壳体。 圆柱形柱塞可滑动地插入壳体中，其开口端面向壳体的封闭底部并且其另一端从壳体突出。 环形密封件安装在壳体的内周和柱塞的外周之间，以密封壳体中的油。 螺杆和螺母构件安装在柱塞中以与柱塞同轴，螺母构件与螺杆螺纹接合。 在螺母构件和柱塞之间安装复位弹簧，以将螺母构件和柱塞沿轴向偏离的方向偏置。 弹簧安装在螺杆和壳体的封闭底部之间，以沿远离壳体的封闭底部的方向偏压螺杆。
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公开(公告)号：US20080132366A1
公开(公告)日：2008-06-05
申请号：US11987479
申请日：2007-11-30
申请人： Seiji Sato , Satoshi Kitano , Yoshiaki Ryouno , Kouichi Onimaru
发明人： Seiji Sato , Satoshi Kitano , Yoshiaki Ryouno , Kouichi Onimaru
IPC分类号： F16H7/08
CPC分类号： F16H7/0848 , F16H2007/0806 , F16H2007/0857
摘要： A chain tensioner includes a housing having a closed bottom. A rod is axially movably inserted in the housing for pressing a chain. A wear ring is mounted to the outer periphery of the rod and is biased by a return spring mounted in the housing in a direction away from the bottom of the housing. A nut member is mounted between the wear ring and the bottom of the housing so as to be coaxial with the housing and axially movable relative to the housing. A ring-shaped spring member is provided between the nut member and the bottom of the housing to support the nut member. A screw rod is provided between the rod and the bottom of the housing and in threaded engagement with the nut member. A spring is provided between the screw rod and the bottom of the housing to bias the screw rod in a direction away from the bottom of the housing. The screw rod has an end surface that is in abutment with the rod.
摘要翻译： 链条张紧器包括具有封闭底部的壳体。 杆可轴向移动地插入壳体中以压紧链条。 磨损环安装到杆的外周边，并通过安装在壳体中的复位弹簧以远离壳体底部的方向偏置。 螺母构件安装在耐磨环和壳体的底部之间，以便与壳体同轴并且可相对于壳体轴向移动。 在所述螺母构件和所述壳体的底部之间设置环形弹簧构件以支撑所述螺母构件。 螺杆位于杆与壳体的底部之间并与螺母构件螺纹接合。 在螺杆和壳体的底部之间提供弹簧以沿远离壳体底部的方向偏压螺杆。 螺杆具有与杆邻接的端面。
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公开(公告)号：US07766775B2
公开(公告)日：2010-08-03
申请号：US11987479
申请日：2007-11-30
申请人： Seiji Sato , Satoshi Kitano , Yoshiaki Ryouno , Kouichi Onimaru
发明人： Seiji Sato , Satoshi Kitano , Yoshiaki Ryouno , Kouichi Onimaru
CPC分类号： F16H7/0848 , F16H2007/0806 , F16H2007/0857
摘要： A chain tensioner includes a housing having a closed bottom. A rod is axially movably inserted in the housing for pressing a chain. A wear ring is mounted to the outer periphery of the rod and is biased by a return spring mounted in the housing in a direction away from the bottom of the housing. A nut member is mounted between the wear ring and the bottom of the housing so as to be coaxial with the housing and axially movable relative to the housing. A ring-shaped spring member is provided between the nut member and the bottom of the housing to support the nut member. A screw rod is provided between the rod and the bottom of the housing and in threaded engagement with the nut member. A spring is provided between the screw rod and the bottom of the housing to bias the screw rod in a direction away from the bottom of the housing. The screw rod has an end surface that is in abutment with the rod.
摘要翻译： 链条张紧器包括具有封闭底部的壳体。 杆可轴向移动地插入壳体中以压紧链条。 磨损环安装到杆的外周，并且通过安装在壳体中的复位弹簧以远离壳体底部的方向偏置。 螺母构件安装在耐磨环和壳体的底部之间，以便与壳体同轴并且可相对于壳体轴向移动。 在所述螺母构件和所述壳体的底部之间设置环形弹簧构件以支撑所述螺母构件。 螺杆位于杆与壳体的底部之间并与螺母构件螺纹接合。 在螺杆和壳体的底部之间提供弹簧以沿远离壳体底部的方向偏压螺杆。 螺杆具有与杆邻接的端面。
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公开(公告)号：US07654924B2
公开(公告)日：2010-02-02
申请号：US11987977
申请日：2007-12-06
申请人： Seiji Sato , Satoshi Kitano , Yoshiaki Ryouno , Kouichi Onimaru
发明人： Seiji Sato , Satoshi Kitano , Yoshiaki Ryouno , Kouichi Onimaru
IPC分类号： F16H7/08
CPC分类号： F16H7/0848 , F16H2007/0806 , F16H2007/0857
摘要： An auto-tensioner includes a housing having an open end and a closed bottom at another end. A cylindrical plunger is slidably inserted in the housing with its open end facing the closed bottom of the housing and its other end protruding from the housing. A ring-shaped seal member is mounted between the inner periphery of the housing and the outer periphery of the plunger for hermetically sealing oil in the housing. A screw rod and a nut member are mounted in the plunger so as to be coaxial with the plunger, with the nut member in threaded engagement with the screw rod. A return spring is mounted between the nut member and the plunger to bias the nut member and the plunger in a direction axially away from each other. A spring is mounted between the screw rod and the closed bottom of the housing to bias the screw rod in a direction away from the closed bottom of the housing.
摘要翻译： 自动张紧器包括在另一端具有开口端和封闭底部的壳体。 圆柱形柱塞可滑动地插入壳体中，其开口端面向壳体的封闭底部并且其另一端从壳体突出。 环形密封件安装在壳体的内周和柱塞的外周之间，以密封壳体中的油。 螺杆和螺母构件安装在柱塞中以与柱塞同轴，螺母构件与螺杆螺纹接合。 在螺母构件和柱塞之间安装复位弹簧，以将螺母构件和柱塞沿轴向偏离的方向偏置。 弹簧安装在螺杆和壳体的封闭底部之间，以沿远离壳体的封闭底部的方向偏压螺杆。
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公开(公告)号：US20080268993A1
公开(公告)日：2008-10-30
申请号：US12081832
申请日：2008-04-22
申请人： Seiji Sato , Satoshi Kitano , Yoshiaki Ryouno
发明人： Seiji Sato , Satoshi Kitano , Yoshiaki Ryouno
IPC分类号： F16H7/08
CPC分类号： F16H7/0848 , F16H2007/0806 , F16H2007/0857
摘要： A chain tensioner includes a housing defining a cylinder chamber having a closed end. A cylindrical plunger having a closed front end is slidably received in the cylinder chamber. A nut member and a return spring are mounted in the cylinder chamber. The return spring biases the plunger outwardly of the housing to press its closed end against a pivotally supported chain guide. The nut member has a serration-shaped internal thread formed on the inner periphery thereof which is in threaded engagement with a serration-shaped external thread formed on the outer periphery of the screw rod. The screw rod is biased toward the closed end of the plunger by a rod spring. A damper is mounted between the front end of the screw rod and the closed front end of the plunger for damping, in cooperation with the return spring, a pushing force applied to the plunger, and for allowing the screw rod and the plunger to move relative to each other in a direction in which the distance between respective remote ends thereof decreases by an amount not less than an axial play present between the internal and external threads.
摘要翻译： 链条张紧器包括限定具有封闭端的气缸室的壳体。 具有封闭前端的圆柱形柱塞可滑动地容纳在气缸室中。 螺母构件和复位弹簧安装在气缸室中。 复位弹簧将柱塞向外偏压，使其封闭端抵靠枢转支承的链条导向件。 螺母构件具有形成在其内周上的锯齿状内螺纹，其与形成在螺杆的外周上的锯齿状外螺纹螺纹接合。 螺杆通过杆弹簧偏压到柱塞的封闭端。 阻尼器安装在螺杆的前端和柱塞的封闭前端之间，用于与复位弹簧配合，用于阻尼施加到柱塞上的推力，并使螺杆和柱塞相对移动 在其相应的远端之间的距离减小不小于内螺纹和外螺纹之间的轴向游隙的量的方向上彼此相对。
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公开(公告)号：US20080261736A1
公开(公告)日：2008-10-23
申请号：US11892880
申请日：2007-08-28
IPC分类号： F16H7/08
CPC分类号： F16H7/0848 , F16H2007/0806 , F16H2007/0812 , F16H2007/0857 , F16H2007/0859
摘要： A stepped set groove having shallow and deep portions is formed in the inner periphery of a cylinder chamber formed in a housing of a chain tensioner near its open end. A radially and elastically deformable set ring having circumferentially separated ends is received in the set groove in a radially compressed state. The set ring has at the respective ends thereof a pair of grip portions which are received in a cutout formed in housing at its front end. By engaging the set ring in an engaging groove formed in the outer periphery of the plunger near its front end and the shallow portion, it is possible to keep the plunger pushed into the cylinder chamber. In this state, the chain tensioner is mounted in position. One of the grip portions is brought into abutment with one of the circumferentially opposed end walls of the cutout to prevent the plunger from rotating about its axis in such a direction that the axial gap between an internal thread of the plunger and an external thread of a screw rod inserted in the plunger disappears. Thus, it is possible to keep the axial gap larger than the axial distance by which the plunger has to be moved to move the set ring from the shallow portion into the deep portion. This makes it possible to disengage the set ring from the engaging groove by pushing the plunger into the cylinder chamber.
摘要翻译： 在靠近开口端的链式张紧器的壳体中形成的气缸室的内周形成有浅部和深部的台阶式设置槽。 具有周向分开的端部的径向和可弹性变形的固定环以径向压缩状态容纳在所述固定槽中。 固定环在其各自的端部处具有一对把手部分，其被容纳在其前端处形成在壳体中的切口中。 通过将固定环接合在靠近其前端和浅部的柱塞的外周形成的接合槽中，可以将柱塞保持在气缸室中。 在这种状态下，链条张紧器安装就位。 把手部分中的一个与切口的周向相对的端壁中的一个相接触，以防止柱塞绕其轴线旋转，使得柱塞的内螺纹和内螺纹之间的轴向间隙 插入柱塞的螺杆消失。 因此，可以保持轴向间隙大于柱塞必须移动的轴向距离，从而将固定环从浅部移动到深部。 这使得可以通过将柱塞推入气缸室来将固定环与接合槽分离。
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公开(公告)号：US09115762B2
公开(公告)日：2015-08-25
申请号：US14128870
申请日：2012-06-21
申请人： Katsuaki Sasaki , Yoshiaki Ryouno , Shuguang Lian
发明人： Katsuaki Sasaki , Yoshiaki Ryouno , Shuguang Lian
CPC分类号： F16C33/7856 , F16C19/06 , F16C33/7823 , F16C33/7833 , F16C2220/04 , F16C2231/00 , F16C2326/01 , F16C2361/61
摘要： A rolling contact bearing assembly includes a seal member having a seal lip segment. The seal lip segment includes a waist portion having, as viewed in a cross section, a bent V-shape such that a surface of the seal lip segment on outer side defines a relief recess and also includes a protrusion portion distal to the waist portion and having a tapered shape narrowing towards a free end thereof. The seal member installed in the bearing assembly applies urging force on one of inner and outer raceway rings, against change in degree of interference of the protrusion portion with the raceway ring. The protrusion portion includes such high wear material that rotation of the bearing assembly results in wear of the protrusion portion to cause the protrusion portion to make non-contact status or light contact status of a contact pressure of substantially zero.
摘要翻译： 滚动接触轴承组件包括具有密封唇段的密封构件。 密封唇部分包括一个腰部，其在横截面中观察到弯曲的V形，使得外侧上的密封唇部分的表面限定了一个释放凹槽，并且还包括一个远离腰部的突起部分， 具有朝向其自由端变窄的锥形形状。 安装在轴承组件中的密封件对于内滚道环和外滚道环之一施加作用力，以防止突出部与滚道环的干涉程度的变化。 突出部分包括这样的高磨损材料，使得轴承组件的旋转导致突出部分的磨损，使得突出部分使接触压力基本上为零的非接触状态或轻微接触状态。
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