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WO2005059402A1 - Dispositif de tension de courroies ou de chaines de moteurs a combustion interne - Google Patents

Dispositif de tension de courroies ou de chaines de moteurs a combustion interne Download PDF

Info

Publication number
WO2005059402A1
WO2005059402A1 PCT/EP2004/013928 EP2004013928W WO2005059402A1 WO 2005059402 A1 WO2005059402 A1 WO 2005059402A1 EP 2004013928 W EP2004013928 W EP 2004013928W WO 2005059402 A1 WO2005059402 A1 WO 2005059402A1
Authority
WO
WIPO (PCT)
Prior art keywords
housing
piston
friction cone
axially
conical
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Ceased
Application number
PCT/EP2004/013928
Other languages
German (de)
English (en)
Inventor
Werner Petri
Johann Singer
Michael Bogner
Bernd Hartmann
Thomas Kraft
Martin Assel
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
IHO Holding GmbH and Co KG
Original Assignee
INA Schaeffler KG
Schaeffler KG
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by INA Schaeffler KG, Schaeffler KG filed Critical INA Schaeffler KG
Publication of WO2005059402A1 publication Critical patent/WO2005059402A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16H—GEARING
    • F16H7/00—Gearings for conveying rotary motion by endless flexible members
    • F16H7/08—Means for varying tension of belts, ropes or chains 
    • F16H7/0829—Means for varying tension of belts, ropes or chains  with vibration damping means
    • F16H7/0831—Means for varying tension of belts, ropes or chains  with vibration damping means of the dry friction type
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01L—CYCLICALLY OPERATING VALVES FOR MACHINES OR ENGINES
    • F01L1/00—Valve-gear or valve arrangements, e.g. lift-valve gear
    • F01L1/02—Valve drive
    • F01L1/024—Belt drive
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16H—GEARING
    • F16H7/00—Gearings for conveying rotary motion by endless flexible members
    • F16H7/08—Means for varying tension of belts, ropes or chains 
    • F16H2007/0802—Actuators for final output members
    • F16H2007/0806—Compression coil springs
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16H—GEARING
    • F16H7/00—Gearings for conveying rotary motion by endless flexible members
    • F16H7/08—Means for varying tension of belts, ropes or chains 
    • F16H7/0829—Means for varying tension of belts, ropes or chains  with vibration damping means
    • F16H2007/084—Means for varying tension of belts, ropes or chains  with vibration damping means having vibration damping characteristics dependent on the moving direction of the tensioner

Definitions

  • the invention relates to a tensioning device for traction means, such as belts or chains, for internal combustion engines, with a cylindrical housing which is open to the outside on one of its two end faces, with a return spring arranged in the housing and in the form of a compression spring, which has one end is axially supported on the housing and at the other end on a friction cone which is arranged in the housing and has a sleeve-like shape with a circular-cylindrical outer surface and a conical inner surface, and with a piston provided for acting on a traction means which fits into the Housing is partially inserted axially through the open end face and axially supported against the action of the return spring on the friction cone, a conical outer surface of the piston abutting the conical inner surface of the friction cone and the latter having a slot arranged at a circumferential point, for example axially parallel , as well as with its circular cylindrical outer surface on the inner surface of the housing.
  • the invention has for its object to improve a generic clamping device so that the frictional force and the corresponding damping of the piston movement is significantly increased with the same supporting force.
  • a support body is arranged with a conical outer surface in the housing between the piston and the return spring, which is supported against a further conical inner surface of the friction cone.
  • the piston can extend out of the housing almost unhindered when the pretension in the traction means is reduced. In this case there is almost no damping. Will be ßung the bias of the traction means of the piston but pressed into the housing by the traction means, so occurs due to the two conical inner surfaces of the friction cone and the adjacent conical outer surfaces of the piston and the support body, an increased friction and thus a high damping of the piston movement in the housing. This is because the friction is generated by the two conical pairings of surfaces converting the axial force introduced into the clamp into radial contact forces.
  • the conical surface pairs acting as damping elements are arranged axially one behind the other, that is to say “in series”. With the movement of the piston further into the housing and the resulting friction work, directional damping of the piston movement is thus achieved. With the movement of the piston partially However, there is no significant damping from the housing.
  • the invention relates to a tensioning device for traction means, such as belts or chains for internal combustion engines, with a cylindrical housing which is open to the outside on one of its two end faces, with a return spring arranged in the housing and designed as a compression spring, which is supported at one end on the housing and at the other end on a piston which is provided for acting on a traction means and which is partially axially inserted into the housing through its open end face.
  • the object of the invention to achieve a high damping of the piston movement is achieved in that the piston is surrounded by a friction cone arranged in the housing, which has a sleeve-like shape with a conical outer surface, a circular cylindrical inner surface and one located at a circumferential point, for example has axially parallel slot, the friction cone with its conical outer surface adjacent to a conical inner surface of the housing from one in the housing Orderly pressure spring is pressed and is arranged with a circular cylindrical inner surface against the outer surface of the piston.
  • the frictional force in this case is independent of the position of the tensioner, ie the piston in the housing, so that the achievable damping of the piston movement is constant over the entire stroke range.
  • the return spring and the additional pressure spring, which effects the damping are arranged “in parallel”.
  • FIG. 1 shows a clamping device designed with a compression spring and two conical friction surface pairs in an axial section
  • FIG. 2 shows a clamping device with two compression springs and a conical pair of friction surfaces in an axial section
  • the tensioning device according to the invention shown in Figure 1 has a circular cylindrical housing 1, which is closed at one end with a bottom 2.
  • the housing 1 is open at its other end.
  • a return spring 3 located in the housing 1 is supported with one end.
  • the return spring 3 is supported on a piston 6 via a support body 4 and a friction cone 5. This is partially inserted into the housing 1 through the open end.
  • the piston 6 is provided with a conical lateral surface 7 over part of its length.
  • the friction cone 5 surrounds the piston 6 and lies here with a conical inner surface 8 on the outer surface 7 of the piston 6.
  • a further conical inner surface 9 adjoins the inner surface 8 in the friction cone 5 axially in the direction of the return spring 3.
  • the piston 6 is provided with a circular cylindrical surface and is surrounded by the support body 4, which is arranged within the friction cone 5 and rests with a conical outer surface 10 on the further conical inner surface 9 of the friction cone 5.
  • the support body 4 is pot-shaped and has a base 11 on which the return spring 3 is axially supported at one end. Within the support body 4, the return spring 3 surrounds the circular cylindrical surface of the piston 6, which is inserted there into the support body 4 through a center hole 12 in the base 11.
  • the friction cone 5 with the conical inner surface 8 and the further conical inner surface 9 is provided at one circumferential point with a continuous slot 13 which in the present exemplary embodiment runs axially parallel. Another slot shape is also possible, for example, it could be helical.
  • the friction cone 5 lies with a circular cylindrical outer surface 14 on a circular cylindrical inner surface 15 of the housing 1.
  • the support force introduced into the piston 6 causes a corresponding normal force on the slotted friction cone 5 in the friction pairing of the conical surfaces 7 and 8 and the conical surfaces 9 and 10, so that there is a friction which dampens the insertion movement of the piston 6 into the housing 1.
  • the frictional force is significantly lent increased, with suitable dimensions even doubled.
  • the piston 6 can be moved out of the housing 1 as a result of the action of the return spring 3 without hindrance without any appreciable friction, so that no appreciable damping occurs during this movement.
  • a return spring 18 designed as a helical compression spring is supported with one end on the bottom 17 and with the other end within a piston 19 from the bottom 20, which is located outside the housing 16.
  • the piston 19 is designed as a circular cylindrical tube closed on one side, which is inserted over part of its length in the housing 16 and is guided in an axially displaceable manner.
  • the piston 19 is surrounded by a friction cone 21 provided with a longitudinal slot. This rests with a conical outer surface 22 against a conical inner surface 23 of the housing 16, while a circular cylindrical inner surface 24 of the friction cone 21 bears against the circular cylindrical outer surface 25 of the piston 19.
  • the friction cone 21 is pressed axially towards the bottom 17 by a pressure spring 26 arranged in the housing 16, so that a friction occurs between the circular cylindrical inner surface 24 of the slotted friction cone 21 and the circular cylindrical outer surface 25 of the piston 19, which causes the axial movement of the Piston 19 dampens in the housing 16 in both directions of movement.
  • the pressure spring 26 in addition to the return spring 18, the frictional force is independent of the position of the piston 19 in the housing 16. The achievable damping of the piston movement is thus constant over the entire stroke range of the piston 19.

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Devices For Conveying Motion By Means Of Endless Flexible Members (AREA)

Abstract

L'invention concerne un dispositif de tension de courroies ou de chaînes de moteurs à combustion interne, comportant un boîtier cylindrique (1), et un ressort de rappel (3) logé dans le boîtier (1), s'appuyant axialement avec une extrémité sur le boîtier (1) et avec l'autre extrémité sur un cône de friction (5) logé dans le boîtier (1), présentant une forme de douille avec une surface extérieure cylindrique (14) et une surface intérieure conique (8). Ledit dispositif comporte également un piston (6) inséré axialement dans le boîtier (1) et s'appuyant axialement sur le cône de friction (5). Une surface d'enveloppe conique (7) du piston (6) s'appuie sur la surface intérieure conique (8) du cône de friction (5) et ledit cône présente une fente parallèle à l'axe (13) et s'appuie sur la surface intérieure (15) du boîtier avec sa surface extérieure cylindrique (14). Selon l'invention, le boîtier (1) comporte, entre le piston (6) et le ressort de rappel (3), un corps support (4) présentant une surface extérieure conique (10) s'appuyant sur une autre surface intérieure conique (9) du cône de friction (5).
PCT/EP2004/013928 2003-12-16 2004-12-08 Dispositif de tension de courroies ou de chaines de moteurs a combustion interne Ceased WO2005059402A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE2003158889 DE10358889A1 (de) 2003-12-16 2003-12-16 Spannvorrichtung für Riemen oder Ketten von Brennkraftmaschinen
DE10358889.2 2003-12-16

Publications (1)

Publication Number Publication Date
WO2005059402A1 true WO2005059402A1 (fr) 2005-06-30

Family

ID=34672804

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP2004/013928 Ceased WO2005059402A1 (fr) 2003-12-16 2004-12-08 Dispositif de tension de courroies ou de chaines de moteurs a combustion interne

Country Status (2)

Country Link
DE (1) DE10358889A1 (fr)
WO (1) WO2005059402A1 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2007009631A1 (fr) * 2005-07-22 2007-01-25 Schaeffler Kg Dispositif d'amortissement pour une transmission par element flexible
CN107035832A (zh) * 2013-08-29 2017-08-11 艾默生科技有限公司布兰森超声分公司 牵引装置张紧器、具有牵引装置张紧器的振动焊接装置以及牵引装置张紧器制造方法

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2008059911A1 (fr) * 2006-11-17 2008-05-22 Ntn Corporation Tendeur automatique du type à alimentation en huile
JP4880428B2 (ja) * 2006-11-17 2012-02-22 Ｎｔｎ株式会社 給油式オートテンショナ
DE102007028191A1 (de) 2007-06-20 2008-12-24 Schaeffler Kg Linearspanner
DE102007046024A1 (de) * 2007-09-26 2009-04-16 Litens Automotive Gmbh Umlauftriebspannvorrichtung
DE102008052307A1 (de) * 2008-10-18 2010-04-22 Schaeffler Kg Mechanische Spannvorrichtung

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4203448A1 (de) * 1992-02-07 1993-08-12 Schaeffler Waelzlager Kg Riemenspannvorrichtung
DE4203449A1 (de) * 1992-02-07 1993-08-12 Schaeffler Waelzlager Kg Riemenspannvorrichtung
US6361459B1 (en) * 2000-04-14 2002-03-26 The Gates Corporation Tensioner

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2806382A (en) * 1956-06-01 1957-09-17 Int Harvester Co Belt tensioning device
FR1531618A (fr) * 1967-05-24 1968-07-05 Dispositif équilibreur de tension pour chaînes, courroies et éléments de transmission équivalents
DE9011970U1 (de) * 1990-08-18 1992-01-23 Bach, Michael, 5000 Köln Spannvorrichtung
DE4433153A1 (de) * 1994-09-17 1996-03-21 Schaeffler Waelzlager Kg Spannvorrichtung
DE29610404U1 (de) * 1996-06-13 1996-08-22 Joh. Winklhofer & Söhne GmbH und Co KG, 81369 München Dämpfungsring

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4203448A1 (de) * 1992-02-07 1993-08-12 Schaeffler Waelzlager Kg Riemenspannvorrichtung
DE4203449A1 (de) * 1992-02-07 1993-08-12 Schaeffler Waelzlager Kg Riemenspannvorrichtung
US6361459B1 (en) * 2000-04-14 2002-03-26 The Gates Corporation Tensioner

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2007009631A1 (fr) * 2005-07-22 2007-01-25 Schaeffler Kg Dispositif d'amortissement pour une transmission par element flexible
CN107035832A (zh) * 2013-08-29 2017-08-11 艾默生科技有限公司布兰森超声分公司 牵引装置张紧器、具有牵引装置张紧器的振动焊接装置以及牵引装置张紧器制造方法
US10260605B2 (en) 2013-08-29 2019-04-16 Branson Ultraschall Niederlassung Der Emerson Technologies Gmbh & Co. Ohg Traction means tensioner, vibration welding device having a traction means tensioner as well as production method for a traction means tensioner

Also Published As

Publication number Publication date
DE10358889A1 (de) 2005-07-14

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