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公开(公告)号：US5586952A
公开(公告)日：1996-12-24
申请号：US506564
申请日：1995-07-25
申请人： Tomoyoshi Izutsu , Kazuki Kawashima
发明人： Tomoyoshi Izutsu , Kazuki Kawashima
CPC分类号： F16H7/1236 , F16H7/0848 , F16H2007/0806 , F16H2007/0812 , F16H2007/0859 , F16H2007/0891
摘要： A hydraulic autotensioner having a close-bottomed body in which is sealed hydraulic oil. A plunger is slidably mounted in the body with a gap formed therebetween through which the hydraulic oil can leak. The plunger is formed with a hole in the top thereof, and a return passage extending through the plunger from the bottom of the hole to the bottom of the plunger. A rod, having its bottom end inserted in the hole, is provided with a rod spring for biasing the rod in such a direction so as to protrude out of the body. A plunger spring is provided for urging the plunger against the bottom end of the rod. Also, a valve seat is provided on the bottom of the hole so as to be brought into close contact with the bottom end of the rod. The return passage is opened and closed by axial displacement of the rod relative to the valve seat.
摘要翻译： 一种液压自动张紧器，其具有密闭的液压油。 柱塞可滑动地安装在主体中，其间形成有间隙，液压油可以通过该间隙泄漏。 柱塞在其顶部形成有孔，以及从孔的底部到柱塞的底部延伸穿过柱塞的返回通道。 具有插入孔中的底端的杆设置有杆弹簧，用于沿着这样的方向偏压杆以便突出到身体之外。 提供柱塞弹簧用于将柱塞推靠在杆的底端。 此外，阀座设置在孔的底部，以便与杆的底端紧密接触。 返回通道通过杆相对于阀座的轴向位移而打开和关闭。
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公开(公告)号：US5334109A
公开(公告)日：1994-08-02
申请号：US991008
申请日：1992-12-16
申请人： Tomoyoshi Izutsu , Kazuki Kawashima
发明人： Tomoyoshi Izutsu , Kazuki Kawashima
CPC分类号： F16H7/1218 , F16H2007/081 , F16H2007/084
摘要： A belt tension adjusting device having a fixed member, a support shaft extending vertically from the fixed member and a pulley arm having a boss formed with a boss. The support shaft is received in the bore to rotatably support the pulley arm. A damper mechanism is mounted between the support shaft and the boss for damping a pivoting motion of the pulley arm. A pulley is mounted on the pulley arm. A tension adjusting spring is coupled to the pulley arm for biasing the pulley to impart tension to a belt. A bearing is provided for receiving radial loads produced when the pulley arm pivots. Part of the bearing is located in part outside the boss.
摘要翻译： 一种带张力调节装置，具有固定构件，从固定构件垂直延伸的支撑轴和具有形成有凸台的凸台的滑轮臂。 支撑轴被容纳在孔中以可旋转地支撑滑轮臂。 阻尼机构安装在支撑轴和凸台之间，用于阻止滑轮臂的枢转运动。 滑轮安装在滑轮臂上。 张力调节弹簧联接到皮带轮臂，用于偏压滑轮以向皮带施加张力。 提供一种用于接收当轮臂枢转时产生的径向载荷的轴承。 轴承的一部分位于凸台外部。
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公开(公告)号：US5234385A
公开(公告)日：1993-08-10
申请号：US919333
申请日：1992-07-27
申请人： Kazuki Kawashima , Isao Hori , Tomoyoshi Izutsu
发明人： Kazuki Kawashima , Isao Hori , Tomoyoshi Izutsu
CPC分类号： F16H7/1218 , F16H2007/081 , F16H2007/084
摘要： A belt tension adjusting device having a pulley arm having a bore formed with threads, a fixed member and a support shaft extending upwardly from the fixed member into the bore in the pulley arm. A bolt made of a synthetic resin is axially movably mounted on the support shaft and held in thread engagement with the threads formed on the bore. An elastic member is mounted in the bore between the bolt and the support shaft or a member integrally mounted on the support shaft for biasing the bolt in an axial direction. A coil spring is mounted on the pulley arm and having one end thereof in engagement with the pulley arm and the other end with the fixed member.
摘要翻译： 一种皮带张力调节装置，具有一个皮带轮臂，其具有形成有螺纹的孔，固定构件和从固定构件向上延伸到滑轮臂中的孔中的支撑轴。 由合成树脂制成的螺栓可轴向移动地安装在支撑轴上并与形成在孔上的螺纹螺纹接合。 弹性构件安装在螺栓和支撑轴之间的孔中，或者一体地安装在支撑轴上的构件，用于沿轴向偏置螺栓。 螺旋弹簧安装在滑轮臂上，其一端与皮带轮臂接合，另一端与固定部件相配合。
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公开(公告)号：US09353795B2
公开(公告)日：2016-05-31
申请号：US14389467
申请日：2013-04-11
申请人： Tomohisa Uozumi , Tomoyoshi Izutsu
发明人： Tomohisa Uozumi , Tomoyoshi Izutsu
CPC分类号： F16C33/6681 , F16C19/06 , F16C33/3875 , F16C33/4605 , F16C33/4652 , F16C33/583 , F16C33/7893 , F16C33/80 , F16C2208/36 , F16C2208/52 , F16C2208/60 , F16C2208/62 , F16C2208/90
摘要： A rolling bearing includes inner and outer races rotatable relative to each other, a plurality of rolling elements interposed between the inner and outer races, and a retainer arranged between the inner and outer races for retaining the plurality of rolling elements equiangularly. Flange portions are formed on a radially inner side and a radially outer side of an axial end portion of the retainer so as to extend radially. Recessed grooves are formed in a region of the inner race and a region of the outer race corresponding to the respective flange portions so as to form labyrinths together with the flange portions. Inner side surfaces of the flange portions and axial end surfaces of the recessed grooves, which are opposed to the inner side surfaces of the flange portions, are inclined radially so as to generate a flow of lubricant.
摘要翻译： 滚动轴承包括可相对于彼此旋转的内座圈和外座圈，插入在内座圈和外座圈之间的多个滚动元件，以及设置在内座圈和外座圈之间的用于等轴地保持多个滚动元件的保持器。 凸缘部形成在保持器的轴向端部的径向内侧和径向外侧，以径向延伸。 在内座圈的区域和外圈的与相应的凸缘部分相对应的区域中形成凹槽，以便与凸缘部分一起形成迷宫。 与凸缘部的内侧面相对的凸缘部的内侧面和凹槽的轴向端面，径向地倾斜，产生润滑剂的流动。
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公开(公告)号：US07037229B2
公开(公告)日：2006-05-02
申请号：US10693503
申请日：2003-10-27
IPC分类号： F16H7/08
CPC分类号： F01L1/02 , F01L1/022 , F01L1/024 , F01L2101/00 , F16H7/0836 , F16H2007/0806 , F16H2007/0859
摘要： A hydraulic tensioner includes a cylinder having a hollow space filled with hydraulic oil. A plunger is slidably mounted in the cylinder. A pushrod is mounted in the hollow space so as to be axially movable together with the plunger with one end thereof protruding from the cylinder. A spring is mounted in the cylinder to bias the plunger and pushrod outwardly of the cylinder. The plunger is formed with a passage through which a pressure chamber and reservoir chamber communicate with each other. The passage is formed with a valve seat. A check ball is arranged so as to be moved into and out of contact with the valve seat. The check ball is adapted to contact the valve seat when pressure in the pressure chamber exceeds pressure in the reservoir chamber, thereby closing the passage. The valve seat is formed of a steel for carburizing and has a surface carbon concentration of 0.55–0.75% to reduce deposition of carbides and to have a surface hardness at least equal to that of the check ball.
摘要翻译： 液压张紧器包括具有充满液压油的中空空间的气缸。 柱塞可滑动地安装在气缸中。 推杆安装在中空空间中，以便与柱塞一起轴向移动，其一端从气缸突出。 弹簧安装在气缸中以将柱塞偏压到气缸的外侧。 柱塞形成有通道，压力室和储存室通过该通道彼此连通。 通道形成有阀座。 一个止回球被布置成与阀座移动和脱离接触。 当压力室中的压力超过储存室中的压力时，止回球适于接触阀座，从而关闭通道。 阀座由用于渗碳的钢形成，并且具有0.55-0.75％的表面碳浓度以减少碳化物的沉积并且具有至少等于止回球的表面硬度。
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公开(公告)号：US20050049093A1
公开(公告)日：2005-03-03
申请号：US10927281
申请日：2004-08-27
申请人： Seiji Sato , Tomoyoshi Izutsu , Satoshi Kitano , Hisashi Hayakawa
发明人： Seiji Sato , Tomoyoshi Izutsu , Satoshi Kitano , Hisashi Hayakawa
CPC分类号： F16H7/0836 , F16H2007/0806 , F16H2007/0812 , F16H2007/0853 , F16H2007/0855 , F16H2007/0859 , F16H2007/0878 , Y10T24/45534 , Y10T292/1043 , Y10T292/1063 , Y10T292/444
摘要： A chain tensioner includes a housing having a cylinder chamber. A plunger is slidably mounted in the cylinder chamber. A spring is mounted in the cylinder chamber to bias the plunger outwardly of the cylinder chamber. The plunger has a radially extending locking pin at its lower portion near its front end. The housing is formed with a pin hole extending substantially perpendicular to an axis of the cylinder chamber near the front end of the housing and under the cylinder chamber. The chain tensioner further includes a support pin inserted in the pin hole, and a locking lever supported on the support pin so as to be pivotable about the support pin. The locking lever can engage the locking pin when the plunger is sufficiently pushed into the cylinder chamber, thereby keeping the plunger pushed in the cylinder chamber.
摘要翻译： 链条张紧器包括具有缸室的壳体。 柱塞可滑动地安装在气缸室中。 弹簧安装在气缸室中，以将柱塞向气缸室向外偏压。 柱塞在其前端附近的下部具有径向延伸的锁定销。 壳体形成有一个销孔，该销孔基本上垂直于该缸室的轴线延伸，靠近该壳体的前端并在缸室下方。 链条张紧器还包括插入销孔中的支撑销和支撑在支撑销上以便可绕支撑销枢转的锁定杆。 当柱塞被充分地推入气缸室中时，锁定杆能够接合锁定销，从而保持柱塞推入气缸室。
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公开(公告)号：US07775921B2
公开(公告)日：2010-08-17
申请号：US10494019
申请日：2002-11-01
申请人： Tomoyoshi Izutsu , Seiji Sato , Hisashi Hayakawa
发明人： Tomoyoshi Izutsu , Seiji Sato , Hisashi Hayakawa
IPC分类号： F16H7/22
CPC分类号： F16H7/0848 , F16H2007/0806 , F16H2007/0812 , F16H2007/0853 , F16H2007/0855 , F16H2007/0859
摘要： A plunger 4 and a spring 6 biasing the plunger 4 outwardly are mounted in a cylinder chamber 2 formed in a housing 1. The housing 1 is provided with an oil supply passage 8 communicating with a pressure chamber 7 formed in the back of the plunger 4. The housing 1 has an outer diameter that is substantially constant over the entire axial length, so that such housings can be mass-produced by pressing. It is thus possible to lower the cost of the chain tensioner.
摘要翻译： 柱塞4和弹簧6向外偏压柱塞4，安装在形成在壳体1中的气缸室2中。壳体1设置有与形成在柱塞4后部的压力室7连通的供油通道8 壳体1具有在整个轴向长度上基本上恒定的外径，从而可以通过按压大量生产这样的壳体。 因此可以降低链条张紧器的成本。
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公开(公告)号：US20080096707A1
公开(公告)日：2008-04-24
申请号：US10581681
申请日：2004-12-20
申请人： Seiji Sato , Tomoyoshi Izutsu , Satoshi Kitano , Hisashi Hayakawa
发明人： Seiji Sato , Tomoyoshi Izutsu , Satoshi Kitano , Hisashi Hayakawa
IPC分类号： F16H7/08
CPC分类号： F16H7/0836 , F16H2007/0806 , F16H2007/0812 , F16H2007/0853 , F16H2007/0855 , F16H2007/0859
摘要： A chain tensioner is provided which can prevent separation of the plunger. In a cylinder chamber 12 of the housing 11, a plunger 13 and a spring 15 that biases the plunger 13 outwardly are mounted. The housing 11 is provided with an oil supply passage 17 communicating with a pressure chamber 16 formed in the cylinder chamber behind the plunger 13. An axially elongated guide recess 31 is formed in the outer periphery of the plunger 13. The housing 11 is provided with a stopper pin 33 near the open end of the cylinder chamber. By abutting the rear end wall 31b of the guide recess 31, the stopper pin 33 prevents separation of the plunger 13 from the housing.
摘要翻译： 提供了可以防止柱塞分离的链条张紧器。 在壳体11的气缸室12中，安装有将柱塞13向外偏压的柱塞13和弹簧15。 壳体11设置有与柱塞13后面形成在气缸室中的压力室16连通的供油通道17.在柱塞13的外周形成有轴向细长的导向凹部31.壳体11设置有 靠近气缸室的开口端的止动销33。 通过将引导凹部31的后端壁31b抵接，止动销33阻止柱塞13与壳体分离。
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公开(公告)号：US07527572B2
公开(公告)日：2009-05-05
申请号：US10927281
申请日：2004-08-27
申请人： Seiji Sato , Tomoyoshi Izutsu , Satoshi Kitano , Hisashi Hayakawa
发明人： Seiji Sato , Tomoyoshi Izutsu , Satoshi Kitano , Hisashi Hayakawa
CPC分类号： F16H7/0836 , F16H2007/0806 , F16H2007/0812 , F16H2007/0853 , F16H2007/0855 , F16H2007/0859 , F16H2007/0878 , Y10T24/45534 , Y10T292/1043 , Y10T292/1063 , Y10T292/444
摘要： A chain tensioner includes a housing having a cylinder chamber. A plunger is slidably mounted in the cylinder chamber. A spring is mounted in the cylinder chamber to bias the plunger outwardly of the cylinder chamber. The plunger has a radially extending locking pin at its lower portion near its front end. The housing is formed with a pin hole extending substantially perpendicular to an axis of the cylinder chamber near the front end of the housing and under the cylinder chamber. The chain tensioner further includes a support pin inserted in the pin hole, and a locking lever supported on the support pin so as to be pivotable about the support pin. The locking lever can engage the locking pin when the plunger is sufficiently pushed into the cylinder chamber, thereby keeping the plunger pushed in the cylinder chamber.
摘要翻译： 链条张紧器包括具有缸室的壳体。 柱塞可滑动地安装在气缸室中。 弹簧安装在气缸室中，以将柱塞向气缸室向外偏压。 柱塞在其前端附近的下部具有径向延伸的锁定销。 壳体形成有一个销孔，该销孔基本上垂直于该缸室的轴线延伸，靠近该壳体的前端并在缸室下方。 链条张紧器还包括插入销孔中的支撑销和支撑在支撑销上以便可绕支撑销枢转的锁定杆。 当柱塞被充分地推入气缸室中时，锁定杆能够接合锁定销，从而保持柱塞推入气缸室。
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公开(公告)号：US5607368A
公开(公告)日：1997-03-04
申请号：US492573
申请日：1995-06-20
CPC分类号： F16H7/1236 , F16H7/0848 , F02B67/06 , F16H2007/0806 , F16H2007/0812 , F16H2007/0859 , F16H2007/0891
摘要： An autotensioner which is of more compact structure and can be mounted in a limited space. The autotensioner has a fixed member, an arm pivotally mounted on the fixed member, a pulley support shaft mounted on the arm, a pulley rotatably mounted on the pulley support shaft, a cylinder having a damper mounted therein and mounted on the arm, the arm being pivotable about an axis and both the pulley support shaft and the cylinder being mounted on the arm at positions offset from the axis, the damper having a rod mounted in the cylinder so as to be pushed out of and into the cylinder, and a stopper fixed to the fixed member, the rod being kept in contact with the stopper.
摘要翻译： 自动伸缩器结构更紧凑，可以安装在有限的空间内。 自动张紧器具有固定部件，枢转地安装在固定部件上的臂，安装在臂上的皮带轮支撑轴，可旋转地安装在皮带轮支撑轴上的滑轮，安装在其中并安装在手臂上的阻尼器的气缸， 可以围绕轴线转动，并且滑轮支撑轴和气缸在轴线偏移的位置处安装在臂上，阻尼器具有安装在气缸中的杆，以便被推出并进入气缸，并且止动器 固定到固定构件上，杆与止动器保持接触。
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