US20030008739A1 - Belt tensioning device - Google Patents

Belt tensioning device Download PDF

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Publication number
US20030008739A1
US20030008739A1 US10/189,661 US18966102A US2003008739A1 US 20030008739 A1 US20030008739 A1 US 20030008739A1 US 18966102 A US18966102 A US 18966102A US 2003008739 A1 US2003008739 A1 US 2003008739A1
Authority
US
United States
Prior art keywords
receiving
tensioning device
mounting housing
spring
roller carrier
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.)
Abandoned
Application number
US10/189,661
Other languages
English (en)
Inventor
Jochen Asbeck
Thomas Berndt
Joachim Jud
Rudolf Bonse
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.)
Muhr und Bender KG
Original Assignee
Muhr und Bender 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 Muhr und Bender KG filed Critical Muhr und Bender KG
Assigned to MUHR UND BENDER KG reassignment MUHR UND BENDER KG ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: ASBECK, JOCHEN, BERNDT, THOMAS, BONSE, RUDOLF, JUD, JOACHIM
Publication of US20030008739A1 publication Critical patent/US20030008739A1/en
Priority to US10/950,847 priority Critical patent/US7104909B2/en
Abandoned legal-status Critical Current

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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 
    • F16H7/10—Means for varying tension of belts, ropes or chains  by adjusting the axis of a pulley
    • 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 
    • F16H7/10—Means for varying tension of belts, ropes or chains  by adjusting the axis of a pulley
    • F16H7/12—Means for varying tension of belts, ropes or chains  by adjusting the axis of a pulley of an idle pulley
    • F16H7/1209—Means for varying tension of belts, ropes or chains  by adjusting the axis of a pulley of an idle pulley with vibration damping means
    • F16H7/1218—Means for varying tension of belts, ropes or chains  by adjusting the axis of a pulley of an idle pulley with vibration damping means of the dry friction type
    • 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
    • F16H2007/081—Torsion 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 present invention relates to a tensioning device for a traction means, such as a belt tensioning device.
  • the invention relates to a tensioning device for traction means, such as a belt tensioning device, having a receiving and mounting housing, a roller carrier pivotably connected to the receiving and mounting housing, a bearing which radially and axially supports the roller carrier relative to the receiving and mounting housing, a spring for applying the tensioning force, and a damping device.
  • the spring is arranged between the roller carrier and the receiving and mounting housing and the damping device comprises a damping bush.
  • the vehicle engine drives various auxiliary units such as a generator, a water pump for vehicle engines with fluid cooling, a pump for servo-power for motor vehicles with steering assistance and a compressor for an air-conditioning system.
  • auxiliary units are driven by a main belt pulley positioned on the crankshaft of the vehicle engine and by an infinite driving belt which, on the one hand, moves via the main belt pulley and, on the other hand, moves via auxiliary belt pulleys arranged on the driveshafts of the auxiliary units.
  • the functional efficiency of the auxiliary units and the service life of the driving belt greatly depend on the setting and maintaining of a certain belt tension of the driving belt.
  • a spring-loaded belt tensioning device which, as a rule, comprises a damping device, so that any slip and vibrations can be compensated for or reduced.
  • the invention relates to a tensioning device for traction means.
  • a tensioning device for traction means i.e. a belt tensioning device.
  • the tensioning device for traction means which is dealt with by the invention, will always be referred to and described as a belt tensioning device. This does not alter the fact that the described tensioning device for traction means can also be used for other applications, i.e. not only as a belt tensioning device.
  • the function of the bearing and that of the damping device are combined in one assembly.
  • the assembly is a cone-type friction bearing which is applied by a spring force and which, on the one hand, radially and axially supports the roller carrier relative to the receiving and mounting housing and, on the other hand, by way of friction, dampens the movements between the roller carrier and the receiving and mounting housing.
  • the disadvantage of the prior art belt tensioning devices is that, on the one hand, due to the unavoidable wear of the cone-type friction bearing, the roller carrier moves axially relative to the receiving and mounting housing and, on the other hand, the damping effect in the direction of load application, i.e. in the direction of an increasing tensioning force, is identical to the damping effect in the direction of load relief, i.e. in the direction of a decreasing tensioning force.
  • the belt tensioning device known from the European publication document 0 294 919 it has been possible to avoid the two above-mentioned disadvantages which are inherent in the belt tensioning devices known from the German publication documents 195 40 706 and 196 03 558 and from the European publication document 0 294 919.
  • the belt tensioning device known from the European publication document 0 294 919 does not comprise a cone-type friction bearing, the disadvantage relating to such a cone-type friction bearing, i.e. that the roller carrier moves axially relative to the receiving and mounting housing, has been avoided.
  • the damping device is designed in such a way that the damping effect in the direction of the increasing tensioning force is greater than in the direction of the decreasing tensioning force.
  • the damping device used in the belt tensioning device comprises a damping bush and a band which is positioned around the damping bush, whose first end is rigidly connected to the receiving and mounting housing and whose other end is subjected to a spring force.
  • the spring force for tensioning the band is applied either by an additional helical spring on the receiving and mounting housing or by the spring primarily serving for applying the tensioning force.
  • it is a coil spring in the form of a leg spring.
  • the first variant is disadvantageous in that there is a need for considerable additional means, in particular, the additionally required helical spring.
  • the second variant is disadvantageous in that the design of the spring which serves to apply the tensioning force also determines the damping characteristics of the belt tensioning device. The degree of freedom desirable for the damping characteristics is thus missing.
  • the inventive belt tensioning device achieves the above-mentioned objective, and is initially and primarily characterised by a flat band spring for applying the friction force to the damping bush.
  • the flat band spring at its first end, is secured in a rotationally fast way to the receiving and mounting housing or at the roller carrier and, at its second end, is secured to the damping bush.
  • the present invention provides a tensioning device for attraction mechanism including a receiving and mounting housing, a roller carrier pivotably connected to the mounting housing, a bearing which radially supports the roller carrier relative to the mounting housing, a spring between the roller carrier and the mounting housing for applying a tensioning force, and a damping device.
  • the damping device includes a damping bush which, by friction, dampens any movement between the roller carrier and the mounting housing in such a way that damping is greater in the direction of an increasing tension force than in the direction of decreasing tension force.
  • a flat band spring applies the friction force to the damping bush.
  • the flat band spring is secured, at a first end, to the receiving and mounting housing in a rotationally fast way, and at a second end to the damping bush in a rotationally fast way.
  • the damping effect which compensates for or reduces slip and vibrations is achieved by friction which occurs in the case of movements between the roller carrier and the receiving and mounting housing.
  • this requires concentrically extending friction faces which correspond to one another, such friction faces being the inner or outer cylindrical face of the damping bush, and a corresponding friction face at the roller carrier or at the receiving and mounting housing.
  • the friction force serving for friction purposes is generated by two elements, i.e. by the band positioned around the damping bush and by a spring by means of which the band positioned around the damping bush is tensioned.
  • the friction force serving for friction purposes is generated by one single element, i.e. by the flat band spring which either partially or wholly embraces the damping bush and which, is secured to the receiving and mounting housing or to the roller carrier and, also, to the damping bush.
  • the flat band spring acts on the damping bush like a clamp band, such as on an associated hose end. That the flat band spring is secured to the receiving and mounting housing or to the roller carrier on the one hand, and to the damping bush, on the other hand, however, is important.
  • the belt tensioning device in accordance with the invention comprises a flat band spring which is secured to the receiving and mounting housing or to the roller carrier, and also to the damping bush, the damping bush is substantially rotationally fixed so that the movements between the roller carrier and the receiving and mounting housing generate friction between the friction faces associated with one another and thus cause a damping effect.
  • the damping bush is substantially rotationally fixed, i.e. it is substantially secured against rotating.
  • “substantially” indicates that any movements between the roller carrier and the receiving and mounting housing lead to minimum rotational movements of the damping bush.
  • Such minimum rotational movements of the damping bush are due to the fact that the friction force between the mutually corresponding friction faces leads to a torque acting on the damping bush.
  • the damping bush is not actually fixed rigidly, but is fixed resiliently by the flat band spring, the torque acting in the damping bush also results in a rotational movement of the damping bush.
  • the minimal rotational movement of the damping bush leads to a minimal change in the diameter of the flat band spring which, either partially or fully, embraces the damping bush. As a result, there occurs a change in the friction force originating from the flat band spring, and thus also in the damping effect.
  • FIG. 1 is a plan view of a preferred embodiment of an inventive belt tensioning device.
  • FIG. 2 is a section through the belt tensioning device according to FIG. 1 along line II-II.
  • FIG. 3 is a section through the belt tensioning device according to FIG. 1 along line III-III.
  • FIG. 4 is a diagrammatic illustration regarding further explanations in respect of the inventive belt tensioning device, generally according to a section through the belt tensioning device according to FIG. 2 along line IV-IV.
  • the Figures show a tensioning device for traction means, namely a belt tensioning device.
  • the belt tensioning device comprises a receiving and mounting housing 1 , a roller carrier 2 which is pivotably connected to the receiving and mounting housing 1 , a bearing 3 which radially and axially supports the roller carrier 2 relative to the receiving and mounting housing 1 , a spring which applies the tensioning force and is arranged between the roller carrier 2 and the receiving and mounting housing 1 , which spring, in the embodiment shown, is a helical spring 4 in the form of a leg spring, as well as a damping device 5 .
  • the receiving and mounting housing 1 shown in the embodiment is provided with two fixing lugs 6 , 7 .
  • the mounting lugs 6 , 7 and mounting screws (not shown), it is possible to fix the receiving and mounting housing 1 , and thus the belt tensioning device as a whole, for example on the vehicle engine (not shown).
  • a tensioning pulley 8 is rotatably supported at the roller carrier 2 , preferably via a rolling contact bearing which does not have to be described in detail. When mounted in the inventive belt tensioning device, the tensioning pulley 8 acts on a driving belt (not shown).
  • the driving belt (not illustrated) is provided with a certain belt tension which is of particular significance for the functional efficiency of auxiliary units driven by the driving belt and for the service life of the driving belt.
  • the damping device 5 also provided in the inventive belt tensioning device, above all, serves to compensate for, or reduce, slip and vibrations.
  • the damping device 5 of the inventive belt tensioning device comprises a damping bush 9 and a flat band spring 10 .
  • the flat band spring 10 is connected to the receiving and mounting housing 1 in a rotationally fast way, and by way of its second end 12 , it is secured to the damping bush 9 in a rotationally fast way.
  • the damping effect which compensates for, or reduces, slip and vibrations is achieved by friction occurring as a result of movements between the roller carrier 2 and the receiving and mounting housing 1 .
  • the friction faces are the inner cylindrical face 13 of the damping bush 9 , and a corresponding friction face 14 at the roller carrier 2 .
  • the friction force required for friction purposes is generated by one single component, i.e. by the flat band spring 10 which embraces the damping bush 9 either partially or wholly and which is fixed to the receiving and mounting housing 1 , and to the damping bush 9 .
  • the flat band spring 10 acts on the damping bush 9 in the same way in which, for example, a band clamp acts on an associated hose end, and it is particularly important that the flat band spring 10 is secured to the receiving and mounting housing 1 on the one hand, and to the damping bush 9 , on the other hand.
  • the damping bush 9 is substantially rotationally fixed, so that movements between the roller carrier 2 and the receiving and mounting housing 1 generate friction, and thus a damping effect, between the associated friction faces, i.e. between the inner cylindrical face 13 of the damping bush 9 and the corresponding friction face 14 at the roller carrier 2 .
  • the damping bush 9 is substantially rotationally fixed, i.e. it is substantially prevented from rotating. In actual fact, however, movements between the roller carrier 2 and the receiving and mounting housing 1 lead to minimum rotational movements of the damping bush 9 .
  • the minimum rotational movements of the damping bush 9 are due to the fact that the friction force between the friction faces corresponding to one another. That is, between the inner cylindrical face 13 of the damping bush 9 and the corresponding friction face 14 of the roller carrier, a torque acts upon the damping bush 9 .
  • the damping bush 9 is not actually secured rigidly, but it is secured resiliently by the flat band spring 10 . In consequence, the torque acting on the damping bush 9 also causes a rotational movement of the damping bush 9 .
  • the effect of this minimal rotational movement of the damping bush 9 is that the diameter of the flat band spring 10 which either partially or wholly embraces the damping bush 9 , undergoes a minimum change, which means that the friction force resulting from the flat band spring 10 and thus the damping force also changes.
  • This provides the desired facility of ensuring that the damping effect in the direction of load application, i.e. in the direction of an increasing tensioning force, is greater than in the direction of load relief, i.e. in the direction of a decreasing tensioning force.
  • the flat band spring 10 is mounted in such a way that when the roller carrier 2 moves in the direction of load application, i.e. in the direction of an increasing tensioning force, the diameter of the flat band spring 10 embracing the damping bush 9 decreases by a minimum amount.
  • the damping bush 9 it follows from the above that it must be possible for the damping bush 9 to change its diameter as a result of the friction force acting thereon. This could be achieved by producing the damping bush from a sufficiently resilient material. However, in a preferred embodiment, this is achieved in that the damping bush 9 is slotted, i.e. in that it comprises a slot 15 suitable for diameter reduction.
  • the flat band spring associated with the damping device 5 by way of its first end 11 , is connected to the receiving and mounting housing 1 (or to the roller carrier 2 ) in a rotationally fast way and that, by way of its second end 12 , it is connected to the damping bush 9 in a rotationally fast way.
  • the flat band spring 10 by way of its first end 11 , is preferably form-fittingly fixed to the receiving and mounting housing 1 .
  • it is held in a fixing slot 16 provided at the receiving and mounting housing 1 .
  • the flat band spring 10 by way of its first end 11 , also applies to fixing the flat band spring 10 by way of its second end 12 .
  • the flat band spring 10 by way of its second end 12 , can be form-fittingly secured to the damping bush 9 .
  • the flat band spring 10 by means of its second end 12 , can be held in a fixing slot 17 provided at the damping bush 9 .
  • the flat band spring 10 by way of its second end 12 can be held in the slot 15 for diameter-reduction in the damping bush 9 .
  • a bearing 3 which radially and axially holds the roller carrier 2 relative to the receiving and mounting housing 1 .
  • the bearing 3 radially and axially supporting the roller carrier 2 relative to the receiving and mounting housing 1 includes of a bearing bush 18 connected to the roller carrier 2 and a bearing pin 19 connected to the receiving and mounting housing 1 .
  • the bearing bush 18 includes of a bearing sleeve 20 serving to provide radial support and a bearing collar 21 serving to provide axial support.
  • Other bearing arrangements are also contemplated as would be understood by those of skill in the art.
  • the spring serving to provide tensioning force between the roller carrier 2 and the receiving and mounting housing 1 could be provided in the form of a flat spiral spring.
  • the spring required for applying the tensioning force between the roller carrier 2 and the receiving and mounting housing 1 is provided in the form of a helical spring 4 in the form of a leg spring.
  • the helical spring 4 which is subjected to tensile loads, also connects the roller carrier 2 to the receiving and mounting housing 1 and axially fixes the roller carrier 2 via the bearing 3 relative to the receiving and mounting housing 1 .
  • the damping bush 9 is secured via the flat band spring 10 to the receiving and mounting housing 1 in a rotationally fast way.
  • the tensioning bush 22 is provided with a tensioning pin 23 .
  • the tensioning bush 22 serves as a stop for delimiting the possible movement between the roller carrier 2 and the receiving and mounting housing 1 .
  • the tensioning pin 23 which can be inserted through the tensioning bush 22 can be used for mounting the inventive belt tensioning device in the mounting position.

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Devices For Conveying Motion By Means Of Endless Flexible Members (AREA)
US10/189,661 2001-07-05 2002-07-03 Belt tensioning device Abandoned US20030008739A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
US10/950,847 US7104909B2 (en) 2001-07-05 2004-09-27 Belt tensioning device

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE10131916A DE10131916A1 (de) 2001-07-05 2001-07-05 Spanneinrichtung für Zugmittel, insbesondere Riemenspanneinrichtung
DE10131916.9 2001-07-05

Related Child Applications (1)

Application Number Title Priority Date Filing Date
US10/950,847 Continuation US7104909B2 (en) 2001-07-05 2004-09-27 Belt tensioning device

Publications (1)

Publication Number Publication Date
US20030008739A1 true US20030008739A1 (en) 2003-01-09

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Application Number Title Priority Date Filing Date
US10/189,661 Abandoned US20030008739A1 (en) 2001-07-05 2002-07-03 Belt tensioning device
US10/950,847 Expired - Fee Related US7104909B2 (en) 2001-07-05 2004-09-27 Belt tensioning device

Family Applications After (1)

Application Number Title Priority Date Filing Date
US10/950,847 Expired - Fee Related US7104909B2 (en) 2001-07-05 2004-09-27 Belt tensioning device

Country Status (7)

Country Link
US (2) US20030008739A1 (cs)
EP (1) EP1277989A3 (cs)
JP (1) JP3660651B2 (cs)
KR (1) KR100464572B1 (cs)
BR (1) BR0202551A (cs)
CZ (1) CZ293467B6 (cs)
DE (1) DE10131916A1 (cs)

Cited By (19)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20040072643A1 (en) * 2002-06-07 2004-04-15 Muhr Und Bender Kg Tensioning means for traction mechanisms, especially belt tensioning means
US20060293135A1 (en) * 2005-06-28 2006-12-28 Dayco Products, Llc Belt tensioner with damping member
US20080058141A1 (en) * 2006-08-31 2008-03-06 Dayco Products, Llc One-way clutched damper for automatic belt tensioner
US20080058142A1 (en) * 2006-08-31 2008-03-06 Dayco Products, Llc One-way clutched damper for automatic belt tensioner
US20080058140A1 (en) * 2006-08-31 2008-03-06 Dayco Products, Llc One-way clutched damper for automatic belt tensioner
US20080207367A1 (en) * 2006-07-07 2008-08-28 Schaeffler Kg Tensioning device for a belt drive
US20090272618A1 (en) * 2008-04-30 2009-11-05 Jeff Pendergrass Pulley with torque-sensitive clutching
US20100113201A1 (en) * 2008-11-05 2010-05-06 Lannutti Anthony E Clutched damper for a belt tensioner
US20100147646A1 (en) * 2008-04-30 2010-06-17 Dayco Products, Llc Pulley with asymmetric torque-sensitive clutching
US20110198185A1 (en) * 2008-04-30 2011-08-18 Dayco Products, Llc Pulley With Asymmetric Torque-Sensitive Clutching
US8439781B2 (en) 2010-06-22 2013-05-14 Dayco Ip Holdings, Llc Radial damping mechanism and use for belt tensioning
US20140051533A1 (en) * 2011-04-28 2014-02-20 Mitsuboshi Belting Ltd. Auto-tensioner
US8888627B2 (en) 2010-05-25 2014-11-18 Dayco Ip Holdings, Llc One-way damped over-arm tensioner
US20160146313A1 (en) * 2013-05-14 2016-05-26 Litens Automotive Partnership Tensioner with improved damping
CN109690132A (zh) * 2016-09-20 2019-04-26 舍弗勒技术股份两合公司 皮带张紧器
CN110805668A (zh) * 2019-11-29 2020-02-18 江苏亚廷汽车科技有限公司 一种非对称阻尼的平面涡卷弹簧张紧轮
US20220018421A1 (en) * 2020-07-20 2022-01-20 Muhr Und Bender Kg Belt tensioning device with a belt drive
CN115135906A (zh) * 2020-01-08 2022-09-30 盖茨公司 用于张紧器装置的可调节的阻尼机构
CN116480459A (zh) * 2023-03-15 2023-07-25 江苏爱尔特实业有限公司 一种摩擦式非对称阻尼系统附件张紧器

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DE102004047422A1 (de) * 2004-09-28 2006-04-13 Muhr Und Bender Kg Riemenspannvorrichtung mit hoher Dämpfung
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US7497794B2 (en) * 2004-11-05 2009-03-03 Dayco Products, Llc Belt tensioner and method for assembly
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BRPI0609663B1 (pt) * 2005-03-21 2018-12-18 Litens Automotive Inc tensor
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CN101421540B (zh) 2006-03-22 2012-09-05 利滕斯汽车合伙公司 用于挠性传动件的张紧器
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DE102008015737A1 (de) 2008-03-26 2009-10-01 Schaeffler Kg Automatische Zugmittelspannvorrichtung zum Spannen eines Riemens eines Verbrennungsmotors mit einer Gleitlagerbuchse, die eine konisch ausgeformte Außenseite aufweist
DE102008026064B4 (de) 2008-05-30 2012-09-27 Muhr Und Bender Kg Riemenspanneranordnung für einen Riementrieb
DE102008050384A1 (de) 2008-10-02 2010-04-08 Schaeffler Kg Spann- und Dämpfungsvorrichtung für Zugmitteltriebe
BRPI0920802B1 (pt) 2008-10-02 2019-11-05 Litens Automotive Inc conjunto tensor
JP5276520B2 (ja) * 2008-10-10 2013-08-28 智和 石田 オートテンショナ
DE102009013505A1 (de) 2009-03-17 2010-09-23 Schaeffler Technologies Gmbh & Co. Kg Spannvorrichtung
DE102009013639A1 (de) 2009-03-18 2010-09-23 Schaeffler Technologies Gmbh & Co. Kg Verfahren zum Herstellen von Spanneinrichtungen für Zugmitteltriebe und nach diesem Verfahren hergestellte Spanneinrichtung
US8617013B2 (en) 2010-09-02 2013-12-31 Dayco Ip Holdings, Llc Tensioner with expanding spring for radial frictional asymmetric damping
US8545352B2 (en) 2010-09-02 2013-10-01 Dayco Ip Holdings, Llc Tensioner with expanding spring for radial frictional asymmetric damping
WO2012114959A1 (ja) * 2011-02-23 2012-08-30 Ntn株式会社 チェーンガイド及びチェーンテンショナ装置
CN103620265A (zh) * 2011-06-13 2014-03-05 Ntn株式会社 链条引导件和链条传动装置
JP5706261B2 (ja) * 2011-07-25 2015-04-22 Ntn株式会社 カム軸駆動用のチェーン伝動装置
WO2013136956A1 (ja) * 2012-03-12 2013-09-19 Ntn株式会社 チェーンガイドおよびチェーン伝動装置
US9400046B2 (en) * 2012-05-24 2016-07-26 Ntn Corporation Chain guide and chain transmission device
JP5941858B2 (ja) * 2013-03-01 2016-06-29 三ツ星ベルト株式会社 オートテンショナ
US9394977B2 (en) 2013-03-15 2016-07-19 Dayco Ip Holdings, Llc Tensioner with expanding spring for radial frictional asymmetric damping
JP6205291B2 (ja) * 2014-02-17 2017-09-27 Ntn株式会社 カム軸駆動用チェーン伝動装置
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US9206888B2 (en) * 2011-04-28 2015-12-08 Mitsuboshi Belting Ltd. Auto-tensioner
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US20160146313A1 (en) * 2013-05-14 2016-05-26 Litens Automotive Partnership Tensioner with improved damping
CN109690132A (zh) * 2016-09-20 2019-04-26 舍弗勒技术股份两合公司 皮带张紧器
US11131366B2 (en) 2016-09-20 2021-09-28 Schaeffler Technologies AG & Co. KG Belt tensioner
CN110805668A (zh) * 2019-11-29 2020-02-18 江苏亚廷汽车科技有限公司 一种非对称阻尼的平面涡卷弹簧张紧轮
CN115135906A (zh) * 2020-01-08 2022-09-30 盖茨公司 用于张紧器装置的可调节的阻尼机构
US20220018421A1 (en) * 2020-07-20 2022-01-20 Muhr Und Bender Kg Belt tensioning device with a belt drive
US11629778B2 (en) * 2020-07-20 2023-04-18 Muhr Und Bender Kg Belt tensioning device with a belt drive
CN116480459A (zh) * 2023-03-15 2023-07-25 江苏爱尔特实业有限公司 一种摩擦式非对称阻尼系统附件张紧器

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JP3660651B2 (ja) 2005-06-15
US20050043131A1 (en) 2005-02-24
EP1277989A2 (de) 2003-01-22
CZ20022335A3 (cs) 2004-01-14
US7104909B2 (en) 2006-09-12
DE10131916A1 (de) 2003-01-23
JP2003042246A (ja) 2003-02-13
CZ293467B6 (cs) 2004-05-12
KR20030005035A (ko) 2003-01-15
BR0202551A (pt) 2003-05-13
KR100464572B1 (ko) 2005-01-03

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