公开(公告)号：EP2910818A1

公开(公告)日：2015-08-26

申请号：EP13847837.5

申请日：2013-10-11

申请人： NTN Corporation

发明人： KITANO Satoshi ,  FUKAHORI Tsuyoshi ,  SATOMURA Aisaku ,  YAMADA Masayoshi

IPC分类号： F16H7/12 ,  B22D17/00

CPC分类号： F16H7/0836 ,  F16H7/0848 ,  F16H7/1236 ,  F16H2007/0806 ,  F16H2007/0814 ,  F16H2007/0859 ,  F16H2007/0893

摘要： A hydraulic auto-tensioner for an engine accessory is provided where a sleeve fit-in hole (3) is formed at an upper surface of a bottom portion of a cylinder (1) accommodating a hydraulic oil, a lower end portion of a sleeve (4) is press-fitted in the sleeve fit-in hole (3), and a lower end portion of a rod (5) is slidably inserted in the sleeve (4) to define a pressure chamber (6) inside the sleeve (4). A lower end face of the sleeve (4) is in abutment with a divided bottom surface (3 a) of the sleeve fit-in hole (3) to trap burrs produced when the lower end portion of the sleeve (4) is press-fitted into the sleeve fit-in hole (3) between the divided bottom surface (3a) of the sleeve fit-in hole (3) and the lower end face of the sleeve (4), so that burrs are prevented from mixing into the hydraulic oil.

公开(公告)号：EP1779001B1

公开(公告)日：2012-01-18

申请号：EP05771821.5

申请日：2005-07-16

申请人： Schaeffler Technologies GmbH & Co. KG

发明人： KOCH, Reinhard

IPC分类号： F16H7/08

CPC分类号： F16H7/0848 ,  F16H2007/0806 ,  F16H2007/0812 ,  F16H2007/0814 ,  F16H2007/0859 ,  F16K17/0406

摘要： The invention relates to a hydraulic tensioning device for a traction mechanism drive, in particular for a chain or belt drive of an internal combustion engine, comprising a tensioning piston which is guided in a displaceable manner in a cylinder, a pressure chamber which is determined by the tensioning piston and the cylinder and which is used to receive hydraulic fluid, and a pressure-relief valve which defines the pressure in the pressure chamber. The pressure-relief valve (8) comprises, at least partially, a pre-mounted component which can be inserted or is inserted (10) into the tensioning piston (4).

公开(公告)号：EP2131066A2

公开(公告)日：2009-12-09

申请号：EP09159593.4

申请日：2009-05-07

申请人： NTN Corporation

发明人： Ryouno, Yoshiaki ,  Sato, Seiji

IPC分类号： F16H7/08 ,  F16H7/12

CPC分类号： F16H7/0836 ,  F16H7/0848 ,  F16H2007/0806 ,  F16H2007/0812 ,  F16H2007/0814 ,  F16H2007/0853 ,  F16H2007/0855 ,  F16H2007/0859 ,  F16H2007/0878

摘要： The object is to provide a chain tensioner of which the plunger can be kept in a retracted position and of which the housing is small in size and light in weight.
The chain tensioner comprises a cylindrical housing 1, a plunger 3 slidably mounted in the housing 1, and a return spring 7 mounted in the housing 1 and biasing the plunger 3 outwardly of the housing 1. The housing 1 is formed with a stepped setting groove 12 in a radially inner surface thereof near its open end. The setting groove 12 comprises a deep portion 12a and a shallow portion 12b. A radially elastically deformable setting ring 13 having two separate circumferential ends and received in the setting groove 12 in a radially compressed state. The setting ring 13 includes a pair of tabs 13a provided at the two separate circumferential ends, respectively, and received in a cutout 14 formed in the housing 1 at the open end. The setting ring 13 can be radially compressed by operating the tabs 13a. The plunger 3 can be retained in a position where the plunger 3 is pushed in the housing 1 by engaging the setting ring 13 in an engaging groove 15 formed in a radially outer surface of the plunger 3 near its front end, while keeping the setting ring 13 in elastic contact with a bottom of the shallow portion 12b of the setting groove 12. Thus, the tensioner can be easily mounted in position. The tabs 13a of the setting ring 13 extend in directions that intersect a plane perpendicular to a central axis of the setting ring 13. This makes it possible to reduce the wall thickness of the housing 1 and thus its size and weight.

摘要翻译： 目的是提供一种链条张紧器，其中柱塞可以保持在缩回位置，并且其中壳体的尺寸小巧且重量轻。 链条张紧器包括圆柱形壳体1，可滑动地安装在壳体1中的柱塞3和安装在壳体1中并将柱塞3偏压到壳体1外部的复位弹簧7.壳体1形成有阶梯式设置槽 12在其径向内表面中靠近其开口端。 设置槽12包括深部12a和浅部12b。 径向可弹性变形的设定环13具有两个独立的周向端部，并以径向压缩的状态容纳在设置槽12中。 设置环13包括分别设置在两个分开的周向端部处的一对突出部13a，并且容纳在开口端形成在壳体1中的切口14中。 通过操作翼片13a可以使定位环13径向压缩。 柱塞3可以保持在柱塞3被推入壳体1中的位置，通过将安装环13接合在形成在柱塞3的前端附近的径向外表面的接合槽15中，同时保持安装环 13与设置槽12的浅部12b的底部弹性接触。因此，张紧器可以容易地安装就位。 固定环13的凸片13a在与安装环13的中心轴线垂直的平面相交的方向上延伸。这使得可以减小壳体1的壁厚，从而减小其尺寸和重量。

公开(公告)号：EP1779001A1

公开(公告)日：2007-05-02

申请号：EP05771821.5

申请日：2005-07-16

申请人： Schaeffler KG

发明人： KOCH, Reinhard

IPC分类号： F16H7/08

CPC分类号： F16H7/0848 ,  F16H2007/0806 ,  F16H2007/0812 ,  F16H2007/0814 ,  F16H2007/0859 ,  F16K17/0406

摘要： The invention relates to a hydraulic tensioning device for a traction mechanism drive, in particular for a chain or belt drive of an internal combustion engine, comprising a tensioning piston which is guided in a displaceable manner in a cylinder, a pressure chamber which is determined by the tensioning piston and the cylinder and which is used to receive hydraulic fluid, and a pressure-relief valve which defines the pressure in the pressure chamber. The pressure-relief valve (8) comprises, at least partially, a pre-mounted component which can be inserted or is inserted (10) into the tensioning piston (4).

公开(公告)号：EP1258655A2

公开(公告)日：2002-11-20

申请号：EP02009697.0

申请日：2002-04-29

申请人： Tsubakimoto Chain Co.

发明人： Kurohata, Junya c/o Tsubakimoto Chain Co. ,  Tomioka, Hisashi c/o Nissan Kohki Co. Ltd ,  Kawamura, Kazuaki c/o Nissan Kohki Co. Ltd

IPC分类号： F16H7/08

CPC分类号： F16H7/0848 ,  F16H2007/0806 ,  F16H2007/0812 ,  F16H2007/0814 ,  F16H2007/0859

摘要： The present invention relates to a hydraulic type tensioner with a relief valve. In this tensioner, a relief valve, which is opened and closed in accordance with the oil pressure of oil supplied under pressure from an oil pressure generating source such as an oil pump or the like through an oil supply port, is provided in a bypass oil path, which detours a check valve mechanism formed in a tensioner body and communicates between the oif supply port and a high pressure oil chamber.

摘要翻译： 本发明涉及一种具有安全阀的液压式张紧器。 在该张紧器中，在旁通油中设置安全阀，该安全阀根据来自油压泵等油压产生源的供给压力的油的油压，通过供油口开闭， 路径，其形成在张紧器主体中形成的止回阀机构，并且连通在供气口和高压油室之间。

公开(公告)号：EP1067275A3

公开(公告)日：2001-09-26

申请号：EP00305430.1

申请日：2000-06-28

申请人： Borg-Warner Automotive K. K.

发明人： Tada, Naosumi

IPC分类号： F01L1/02 ,  F16H7/08

CPC分类号： F16H7/0836 ,  F01L1/02 ,  F01L1/022 ,  F01L1/024 ,  F16H2007/0806 ,  F16H2007/0812 ,  F16H2007/0814 ,  F16H2007/0859

摘要： The present invention relates to a mechanism to prevent the incorrect assembly of an air vent disc in a hydraulic tensioner. The hydraulic tensioner includes a housing (2) having a chamber (20). A hollow plunger (3) is slidably positioned inside the chamber. The chamber contains a spring (4) which biases the plunger in a protruding direction and an air vent disc (10) provided inside the plunger. An air vent disc includes a first portion (11) and a second portion (12). The first portion (11) has a groove as a vent channel and a through-hole. The second portion (12) has a central hole and a plurality of grooves extending radially and opening into the outer periphery of the vent disc. The outer diameter of the second portion is larger than the inner diameter of the aperture located at the upper end of the plunger tip.

公开(公告)号：EP1067275A2

公开(公告)日：2001-01-10

申请号：EP00305430.1

申请日：2000-06-28

申请人： Borg-Warner Automotive K. K.

发明人： Tada, Naosumi

IPC分类号： F01L1/02

CPC分类号： F16H7/0836 ,  F01L1/02 ,  F01L1/022 ,  F01L1/024 ,  F16H2007/0806 ,  F16H2007/0812 ,  F16H2007/0814 ,  F16H2007/0859

摘要： The present invention relates to a mechanism to prevent the incorrect assembly of an air vent disc in a hydraulic tensioner. The hydraulic tensioner includes a housing (2) having a chamber (20). A hollow plunger (3) is slidably positioned inside the chamber. The chamber contains a spring (4) which biases the plunger in a protruding direction and an air vent disc (10) provided inside the plunger. An air vent disc includes a first portion (11) and a second portion (12). The first portion (11) has a groove as a vent channel and a through-hole. The second portion (12) has a central hole and a plurality of grooves extending radially and opening into the outer periphery of the vent disc. The outer diameter of the second portion is larger than the inner diameter of the aperture located at the upper end of the plunger tip.

摘要翻译： 本发明涉及一种防止液压张紧器中的排气盘错误组装的机构。 液压张紧器包括具有腔室（20）的壳体（2）。 空心柱塞（3）可滑动地定位在室内。 该腔室包括弹簧（4），该弹簧（4）沿突出方向偏压柱塞，和设置在柱塞内部的排气盘（10）。 排气盘包括第一部分（11）和第二部分（12）。 第一部分（11）具有作为排气通道的沟槽和通孔。 第二部分（12）具有中心孔和径向延伸并且进入通气盘的外周边的多个槽。 第二部分的外径大于位于柱塞尖端上端的孔的内径。

公开(公告)号：EP0952375A2

公开(公告)日：1999-10-27

申请号：EP99302897.6

申请日：1999-04-14

申请人： BORG-WARNER AUTOMOTIVE, INC.

发明人： Smith, Franklin R.

IPC分类号： F16H7/08

CPC分类号： F16H7/0848 ,  F16H2007/0806 ,  F16H2007/0812 ,  F16H2007/0814 ,  F16H2007/0859 ,  F16H2007/0893

摘要： A hydraulic tensioner (100) having a piston (130) slidably received in a housing bore (104) and biased in a protruding direction by a spring (170). A pressure relief valve (300) is positioned in the nose of the piston (130). The pressure relief valve (300) includes a valve member (302) and seat member (306). The valve member (302) biased by a spring (316) disposed between the seat member (306) and a retaining plate (310) on the valve member (302).

摘要翻译： 液压张紧器（100）具有可滑动地容纳在壳体孔（104）中并通过弹簧（170）沿突出方向偏压的活塞（130）。 减压阀（300）定位在活塞（130）的前端。 减压阀（300）包括阀构件（302）和座构件（306）。 阀构件（302）由设置在座构件（306）和阀构件（302）上的保持板（310）之间的弹簧（316）偏置。

公开(公告)号：EP2107271B1

公开(公告)日：2011-10-26

申请号：EP09004599.8

申请日：2009-03-30

申请人： NTN Corporation

发明人： Sato, Seiji ,  Furukawa, Tasuku ,  Ryouno, Yoshiaki ,  Hayakawa, Hisashi

IPC分类号： F16H7/08

CPC分类号： F16H7/0836 ,  F16H2007/0806 ,  F16H2007/0812 ,  F16H2007/0814 ,  F16H2007/0857 ,  F16H2007/0859

公开(公告)号：EP1797349B1

公开(公告)日：2008-11-26

申请号：EP05777580.1

申请日：2005-09-03

申请人： Schaeffler KG

发明人： KROON, Bert ,  KOCH, Reinhard

IPC分类号： F16H7/08

CPC分类号： F16H7/0836 ,  F16H2007/0806 ,  F16H2007/0812 ,  F16H2007/0814 ,  F16H2007/0859

摘要： The invention relates to a hydraulic tensioner for traction means, especially of combustion engines, comprising a tensioner piston, in the bottom of which an externally opening pressure relief valve is disposed in an axial central bore. Said central bore is provided with a hole and is secured by a pot-type cap which rests against the piston bottom and frictionally engages therewith. In order to make the inventive hydraulic tensioner inexpensive to produce and easy to handle, the same is characterized by the fact that the pot-type cap is embodied as a thin-walled sleeve (27) encompassing a bottom (32) while being connected to the outer circumference of a reduced end (31) of the piston bottom (19), preferably by means of a press fit. Furthermore, the hole (34) is located in the bottom (32) of the sleeve and is disposed in an axial direction.