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WO2008031687A1 - Dispositif tendeur pour une transmission par lien souple - Google Patents

Dispositif tendeur pour une transmission par lien souple Download PDF

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Publication number
WO2008031687A1
WO2008031687A1 PCT/EP2007/058519 EP2007058519W WO2008031687A1 WO 2008031687 A1 WO2008031687 A1 WO 2008031687A1 EP 2007058519 W EP2007058519 W EP 2007058519W WO 2008031687 A1 WO2008031687 A1 WO 2008031687A1
Authority
WO
WIPO (PCT)
Prior art keywords
friction surface
clamping device
torsion spring
spring
force
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/EP2007/058519
Other languages
German (de)
English (en)
Inventor
Johann Singer
Matthias Schmidl
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
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 Schaeffler KG filed Critical Schaeffler KG
Publication of WO2008031687A1 publication Critical patent/WO2008031687A1/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 
    • F16H7/10—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 
    • F16H2007/0889—Path of movement of the finally actuated member
    • F16H2007/0893—Circular path

Definitions

  • the invention is directed to a tensioning device for a traction mechanism drive, in particular for a belt drive, which as such is integrated in an internal combustion engine in order to drive components thereof or attached aggregates, such as generators, water pumps, air conditioning compressors or comparable units.
  • a belt tensioning device which comprises a mounting block and a pivotally mounted thereto pivoting arm.
  • This belt tensioning device further comprises a torsion spring, by means of which a torque acting between the fastening block and the pivoting arm is generated.
  • a tensioning pulley mounted on the swivel arm against a belt rim typically an idler strand of the belt drive (tensioning function for maintaining the drive of the power units).
  • a braking device effective by means of which the movement of the pivot arm by means of Coulomb 'shear friction can be braked thereby achieving an attenuation of belt vibration.
  • DE 101 31 916 A1 likewise discloses a tensioning device for traction means, in particular a belt tensioning device.
  • This clamping device also comprises a fastening structure and a pivotably mounted thereto pivot arm which is provided with a tensioning roller.
  • the pivotal movement between the pivoting arm and the base structure is damped by a bushing element which projects into the interior of a spring acting as a return spring Coil spring is used and as such provides Reib mint lake.
  • a band spring is provided to apply the frictional force to the damping bush.
  • EP 0 967 412 A2 DE 100 63 638 A1, EP 0 866 240 B1, EP 0 450 620 B1 and DE 10 2004 047 422 A1 disclose further belt tensioning devices which each have a spring-loaded swivel arm whose swivel movement is damped by brake devices.
  • the invention has for its object to provide a clamping device which is characterized by a favorable under production and design aspects advantageous structure, as well as by an advantageous mechanical operating behavior.
  • a Spannvor- direction with a base, a pivotally coupled to the base member in a pivotable arm, a torsion spring for applying an effective between the base and the pivot arm, acting in the clamping direction pivoting moment, and a damping device for generating a Damping force which counteracts a movement of the pivoting arm directed counter to the clamping direction
  • the damping device comprising a friction surface member, which as such forms a frictional force application friction surface which rests on a Gegenreib simulation
  • the construction principle according to the invention makes it possible to take account of relatively small modifications to exchangeable components of the clamping device, various requirements with regard to the clamping direction and the clamping forces and the structure of the same.
  • the construction concept according to the invention makes it possible, in particular, to provide a clamping device whose clamping torque and its tensioning characteristic can be configured as required merely by exchanging the torsion spring and by exchanging (or possibly only by turning) a structural component which incorporates the friction surface element into the tensioning device.
  • the torsion spring is preferably incorporated into the tensioning device in such a way that a force pair consisting of tangential force and radial force acts in the end section, whereby preferably the radial force is already used to achieve a friction torque and the tangential force can also be used to achieve a friction work by incorporating the wedge-shaped ramp ,
  • the ramp surface provided by the support structure forms a wedge-shaped ramp over which the friction surface member can be raised outwardly against the counter friction surface in a direction radial to the pivot arm axis, thereby generating the pivot arm during pivoting, thereby generating a corresponding frictional force to brake against the clamping direction.
  • tensioning direction refers to a pivoting direction of the pivoting arm into which the pivoting arm is urged under the action of the torsion spring.
  • Said ramp surface or the contact surface of the Reibvidorgans facing this can with a sliding layer, in particular one Be provided PTFE layer, which allows a particularly smooth running of the friction surface member on the ramp surface. It is also possible to facilitate by a roller guide the running of the Reib vomorgans on the ramp surface.
  • the employment of the ramp surface, and the Reibkoeffizien- th the mutually contacting moving surfaces are coordinated so that for the pivoting of the pivot arm relative to the base part both in the clamping direction and in particular in a conditional by the reaction forces of the traction means, the clamping direction opposite deflection in result in a reaction stroke required braking and Dämpfungsef- effects.
  • the support structure is provided by a spring ring element.
  • This spring ring element preferably consists of a curved into a ring, in the torus cross section flat rectangular strip preferably made of corrosion-protected spring steel.
  • a driver portion is preferably integrally formed, which can be brought into engagement with a provided in the pivot arm driver structure, in particular nose.
  • the spring ring element is preferably designed such that it encompasses an axial end section of the torsion spring, so that the end section of the torsion spring can be inserted into the spring ring element.
  • the friction surface member may be made of a plastic material and is preferably fixed to the spring ring element, in particular molded onto this in the context of an insert molding process or held by a snap connection.
  • the friction surface provided by the friction surface member is preferably designed as a cylindrical surface portion, which as such rests flat against a cylinder inner wall provided by the base part.
  • the axial position of the spring element can be determined by a shoulder in the base unit. It is also possible to make profiled the friction surface provided by the friction surface member and the counter friction surface engaged therewith, thereby further increasing the frictional transmission capacity. By profiling the friction surface of the friction surface element with in Pivoting direction extending grooves (eg similar PoIy-V profile) and by providing a complementary counter-profile on the counter friction surface, it is also possible to set the position of the Reib lakes in the axial direction sufficiently.
  • the abovementioned counter-friction surface can be provided directly by an inner surface section of the base part or also by a structure molded into the base part or connected to the base part, in particular a ring element.
  • the ring element can in particular be made of a material whose mechanical properties are optimally matched to the properties of the material of the friction element.
  • a gain is advantageous, especially in a 1-component friction lining.
  • a steel material is preferably used instead of aluminum (die casting) as a friction partner.
  • the counter friction surface can be provided, in particular, by a deep-drawn or welded, thin-walled steel ring, which is anchored in a rotationally secured manner in the base part.
  • the surface pressure between a front end of the torsion spring and the component thereof loaded the friction mechanism can be reduced by the spring ring element itself or by Unterleg- or shoe structures.
  • the provided for generating the clamping torque torsion spring is preferably designed as a legless coil spring.
  • the torsion spring may alternatively be designed as a multi-layer flat material coil spring.
  • a deratiger spring type makes it possible to cause the tangential force in addition to the introduction of the clamping torque or a friction force balancing of the pivot arm, which entails an edge-load-free radial sliding bearing.
  • the tensioning device according to the invention can be designed so that the tensioning roller protrudes axially relative to the tensioner body (usually cup shape) (offset or Z-arrangement) or is at the same height (in-line or U-arrangement). With regard to the tensioning roller diameter or the Schwenkarmhebell briefly can be operated with the inventive design a variety of applications with individual requirements in terms of attenuation level and damping rate.
  • the invention underlying object is further achieved by a clamping device according to claim 16.
  • a tensioning device provided with a friction damping device, the clamping torque of which can be determined as required by tuning the torsion spring.
  • the insert structural component can be designed such that it is compatible with both left-handed and right-handed torsion springs, as well as with torsion springs having different winding material and spring coil diameters, and provides suitable spring seat zones in each case.
  • the damping device or the friction surface element thereof can advantageously be provided, as well as a spring seat suitable for the required torsion spring.
  • the insert structural component is preferably designed such that it is suitable for a carrier structure provided by the pivoting arm and compatible with various insert structural components.
  • thermoplastics with embedded dry lubricant have proven themselves against aluminum die casting. It is conceivable to use the same plastic injection tool for PA66, PA46 and PEEK with dry lubricant. The use of these materials increases the adjustability of the friction characteristic (friction coefficient) by a considerable amount.
  • the damping mechanism can also attach to the base member instead of the pivot arm, wherein the radial braking forces then in the bell-shaped element of the swing arm can be initiated. If even higher damping rates need to be set, both can be realized as a so-called double damping system.
  • This embodiment of the invention extends the design freedom of the designer.
  • Figure 1 is an exploded perspective view of a clamping device according to the invention
  • FIG. 2 is a perspective view of the swivel arm and the insert structural component of the tensioning device according to FIG. 1, designed as a spring ring;
  • Figure 3 is a plan view of the pivot arm of the tensioning device according to Figures 1 and 2 from below, to illustrate further design features of the tensioning device according to the invention, in particular the shape of a Jacobreib phenomenon;
  • Figure 4 is a perspective view of the executed here as a spring ring structural component for further explanation of the here used to generate the braking torque principle
  • FIG. 5 shows a perspective view of a further variant of an insert structural component which is suitable both for use on left-handed and for use of right-handed torsion springs,
  • FIG. 6 shows an exploded perspective view for explaining a further variant of a tensioning device according to the invention
  • FIG. 7 shows a top view of the insert structural component used in the tensioning device according to FIG.
  • the clamping device shown in disassembled state in Figure 1 in the form of an exploded view comprises a base part 1, a pivot arm 2 and a torsion spring 3, as such, the application of a sisteil 1 between the base and the swing arm 2 effective, acting in a clamping direction R1 pivoting moment serves.
  • the torsion spring 3 is executed in the embodiment shown here as a legless coil spring.
  • the tensioning device further comprises a damping device, which as such serves to generate a braking or damping force which, in particular, counteracts the deflection direction R1 of this pivot arm deflection in the case of a deflection of the pivot arm caused by operating forces in the traction means.
  • the damping device comprises a friction surface element 4, which as such forms a friction surface 5 serving for the application of friction force.
  • the friction surface 5 is seated on a counter friction surface (FIG. 3, reference numeral 13), which in the exemplary embodiment shown here is provided by a cylindrical inner surface section of the base part 1.
  • the clamping device according to the invention is characterized in particular by the fact that an insert structural component 6 is provided, which as such serves for the functional integration of the friction surface element 4 into the tensioning device.
  • the insert structure component 6 is further designed such that it also enables a support of an end portion E1 of the torsion spring 3.
  • the insert structure component 6 can be brought into engagement with a driver geometry 7 provided on the part of the swivel arm 2.
  • the corresponding driver geometry 7 is designed in such a way that over this both in the direction of here shown clamping direction R1 as well as this pivoting direction R1 oppositely acting brake and Torsionsfedermomente are transferable.
  • the tensioning roller is in particular mounted so that it is rotatable about a pivot axis X1 of the pivoting arm 2 spaced tension roller axis X2. With regard to its outer contact surface, the tensioning roller is matched to the surface of the tensioning means, in particular the belt or possibly also the chain, which is in contact with the latter. In the swivel arm, shielding of the rolling bearing against environmental influences is preferably provided (FIGS. 8 and 8a).
  • the pivot arm 2 is designed in this embodiment as an aluminum die-cast component. Alternatively, it is also possible to perform the pivot arm 2 as a deep-drawn component made of a steel material or as preferably reinforced by core structures plastic component (insert analog elastomer seals).
  • the assembly of the tensioning device shown disassembled here is carried out by the insert structure component 6 is placed on a central hub portion 2a of the pivot arm that a provided by the insert structure component 6 driver geometry 6a comes with the driving nose designed as driving geometry 7 of the swing arm 2 engages.
  • the insert structure component 6 embodied here as a spring ring is dimensioned such that between an inner circumferential surface 6b thereof and the outer peripheral surface of the central hub portion 2a an annular space for receiving the torsion spring and a clearance remains, in which the spring ring is freely movable to the tolerances and a compensate for any wear-related geometry change.
  • the designed as a helical spring torsion spring 3 is inserted into this annulus so that the front end E1 of the last spring winding a hook portion 4a ' (see Figure 3) of the insert structure component 6, or a rear end face 4a of the friction surface member 4 is supported.
  • the module base unit 1 is inserted with axle journal 80 in the pivot arm 2.
  • a washer 10 which is fixed in a form-fitting manner (for example by caulking) to the end section of the axle journal 80 for receiving small axial forces, is placed on an end section of the axle journal 80 (not shown here).
  • the base part 1 as can be seen from this illustration, designed as a cup-like component.
  • a driving lug N is formed, which as such can be brought into engagement with a corresponding recess of a mounting surface provided for receiving the base part 1.
  • the base part 1 is also designed as an aluminum component.
  • the insert structure component 6 forms a support structure, via which the friction surface element 4 is supported.
  • a ramp surface 12 is provided, by which the friction surface member 4 is supported such that this under the action of a force applied by the torsion spring 3 (see Figure 1) force component and by acting on the friction surface 5 frictional force against the not shown here , provided by an inner wall of the base part 1 Jacobreib configuration 13 ( Figure 3) is urged.
  • the ramp surface 12 forms in the embodiment shown here a ramp ramp surface which is aligned such that on this the Reibflä- chenorgan 4 in a radial direction to the Schwenkarmachse X1 outward direction against the Schwarzreib composition 13 can be raised.
  • the insert structure component 6 is designed as a spring ring element.
  • the spring-ring element is designed in such a way that an end section of the torsion spring 3 (FIG. 1) can be inserted into the interior area encompassed by the latter.
  • the friction surface member 4 is made of a plastic material whose mechanical properties are matched in particular by the inclusion of fillers on the specific application.
  • the friction surface element 4 made of a plastic material it can also be made of otherwise sufficiently adequate coefficients of friction and frictional properties, sufficiently wear-resistant material, in particular in the form of materials for clutch friction linings.
  • Attached to the insert structure component 6 or to the spring ring element 6 ' is an abutment structure 6c which serves to provide an abutment surface 6d against which the end turn section of the torsion spring 3 (FIG. 1) tapering towards the spring end E1 can abut.
  • abutment structure 6c which serves to provide an abutment surface 6d against which the end turn section of the torsion spring 3 (FIG. 1) tapering towards the spring end E1 can abut.
  • This investment structure 6c required for the transmission of the torsional second transverse force component is introduced into the torsion spring 3.
  • the friction surface 5 of the friction surface member 4 is designed as a cylindrical surface portion. It is also possible to design the friction surface 5 in such a way that it is profiled, in particular has V-grooves extending in the pivoting direction.
  • a driver structure 6a which can be brought into engagement with a driver structure 7 formed on the part of the swivel arm 2, is formed on the insert structure component 6.
  • This driver structure 6a is in this embodiment by the here recognizable, leading to a receiving chamber, or Mit supportiveut bending of an end portion of the manufacture of the Federringettis used Stahlmatehales formed.
  • the driver structure 6a comprises in this embodiment, two clamping portions 61, 62 which are engageable as such with counter-structures 61 a, 62 a in engagement. These counter-structures 61 a, 62 a are here formed in the driver portion 7 designed as a nose.
  • the driver structure 6a is located in the immediate vicinity of the run-up surface 12, which is likewise formed by correspondingly sloping off the spring steel matehal.
  • the run-on surface 12 is relatively rigidly coupled to the driver section 7 of the swivel arm 2 to that extent.
  • the front end E1 of the torsion spring 3 sits on a rear side 4a of the friction surface element 4 or on an inwardly bent end section 4a 'of the spring ring 6'.
  • the friction surface member 4 is urged by the end portion E1 of the torsion spring 3 in a formed by the ramp surface 12 and the discernible in this representation Jacobreib torque 13 wedge space.
  • This concept makes it possible to generate a frictional force between the friction surface element 4 and the base part 1, which counteracts a pivoting movement of the pivoting arm 2 directed counter to the tensioning direction R1.
  • the effective on the swing arm 2 pivoting moment can be adjusted by appropriate dimensioning of the torsion spring 3.
  • the inner space remaining between the hub portion 2a and the inner wall of the base part 1 or the inner wall of the spring ring element 6 ' is dimensioned so that different torsion springs can be arranged in this wire thickness and possibly the wire cross-sectional geometry.
  • the transmission of the torque in the torsion spring 3 effective torque on the pivot arm 2 is effected by a first force component in the region of the end portion E1 of the torsion spring 3 on the bent portion 4a ', from this in the Reib vomorgan 4 and from this in turn into the ramp surface 12th is initiated, which is fixed against rotation on the driver geometry 7 of the swing arm 2.
  • the second force component is transmitted to the inner surface of the base part 1 in the area of the abutment structure 6c by an outer peripheral portion of the last turn of the torsion spring 3.
  • a further friction surface element is provided, which counteracts a pivoting movement of the pivot arm 2 relative to the base part 1.
  • a friction force F4 is applied to the friction surface 5, which counteracts the force component FF1 and thus reduces the radial force RK.
  • the pivotal movement of the insert structure part 6 in the direction of the clamping direction R1 can thus be offset under a significantly lower friction moment. are disgusted as the pivoting of the insert structure component 6 against the clamping direction R1.
  • FIG. 5 shows a second variant of an invention structural component 6 according to the invention.
  • This insert structural component is embodied as a plastic integral part and comprises a circumferential jacket 4 ' , which as such acts at least in sections as a friction surface element 4.
  • the insert structural component 6 shown here is designed in such a way that torsion springs wound both left-handed and right-handed can be used.
  • This insert structural component 6 forms, similar to the insert structural component 6 of the type described in connection with FIGS. 1 to 3, a ramp surface 12 on which a head surface 20 can migrate in the radial direction.
  • This head face 20 is defined in each case by a head 21 or 21 ' which forms part of the friction surface element 4 and, in particular, causes it to be supported on the run-on surface 12.
  • the head 21 forms a footprint 4a ', which essentially corresponds in function to the rear end face 4a in the embodiment of FIGS. 1 to 4.
  • a spring seat 22 is further provided, which forms a rising over a circumferential angle of about 120 ° corresponding to the spring pitch rising flank surface.
  • the insert structure component 6 comprises an inner guide cup 23 through which the insert structure component 6 is centered on the hub portion 2a (see FIG. 1) of the pivot arm 2.
  • the attachment sleeve portion 23 is provided with retaining claws 24, which as such latching lugs 25 have, which are used for manufacturing purposes.
  • a driver structure 6a is further formed, which is similar to the embodiment of Figures 1 to 4 so is executed, that the insert structure component 6 can be placed on a driving lug, which is provided by the pivot arm 2.
  • the jacket section of the insert structure component 6 forming the friction surface element 4 comprises two leg sections 41, 42 which are connected elastically to the central body of the insert structure component 6 in such a way that they extend at least in the circumferential zones adjoining the respective heads 21 and 21 ' 90 ° in the radial direction can be deflected outwards.
  • the insert structural component 6 shown here functions as a universal part, which allows both the use of left-handed and right-handed torsion springs.
  • FIG. 6 shows a third variant of an insert structural component according to the invention with associated pivoting arm 2 and a torsion spring 3.
  • the insert structural component 6 shown here similar to the insert structural component according to FIG. 5, is designed as a plastic integral part.
  • the insert structural component 6 comprises a driver section 6a, which as such can be placed on the driver section 7 provided on the part of the swivel arm 2.
  • the insert structural component 6 is likewise provided with a top bushing section 23 which can be placed on the hub section 2a of the swivel arm 2.
  • the insert structural component 6 forms an annular space remaining between the outer wall of the attachment sleeve section 3 and the inner wall of the outer jacket 4 ', in which a spring seat is formed which receives approximately 2/3 of the corresponding last spring turn of the torsion spring 3.
  • the braking force required to damp the pivoting movement of the pivoting arm 2 relative to the base part 1 (see FIG. 1), which is not shown here, is generated via the outer surface of the shell 4 'of the insert structural component 6.
  • This outer surface of the jacket 4 ' runs, as in the embodiments described above, on an inner surface portion of the bush-like base part 1.
  • the struk- tur component 6 may be formed so that the outer shell 4' already with a certain biasing force in the through the base part 1 formed receiving wall sits.
  • the outer shell 4 'of the insert structure component 6 forms two friction limbs 41, 42 which are connected in the region of a driver geometry 6a to the base body of the insert structure component.
  • the outer surfaces defined by these friction limbs 41, 42 function as friction surfaces which, as such, run on the inner surface of the base part 1 (see FIG.
  • a Federsitzrampe 22 is provided which supports the corresponding last spring winding over a circumferential angle of about 270 °.
  • the wall thickness t of the friction limbs 41, 42, as well as the degree of pre-deformation required to achieve an optionally required pretensioning, are matched to the required frictional moment.
  • the friction legs 41, 42 need not extend, as shown here, over a circumferential angle of about 180 ° but can also be formed significantly shortened.
  • the invention is not limited to the embodiments described above.
  • the inventive clamping device is particularly suitable for use in internal combustion engines, but the invention is not limited to such applications.
  • the insert structural component can be produced as a composite component, in particular as a component with a body produced by sheet metal forming and provided with a plastic jacket as part of an insert molding process become. It is also possible to inject on the insert structural component a sealing lip device made of an elastomeric material, in order thereby to achieve a sealing of the remaining between the base part 1 and the swing arm 2 movement gap.

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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)

Abstract

Dispositif tendeur qui comporte une partie de base (1), un bras pivotant (2), un ressort de torsion (3) destiné à produire entre la partie de base et le bras pivotant un couple de pivotement efficace agissant dans le sens de tension (R1), et un dispositif d'amortissement pour la production d'une force d'amortissement qui agit à l'encontre d'un pivotement du bras pivotant, dirigé dans le sens contraire au sens de tension. Selon la présente invention, le dispositif d'amortissement comporte un élément (4) à surface de friction qui forme en tant que tel une surface de friction servant à la production de la force de friction, ladite surface de friction s'appuyant sur une surface de friction complémentaire (13). Ledit dispositif tendeur est caractérisé en ce que l'élément à surface de friction se trouve en position d'appui par l'intermédiaire d'une structure d'appui et en ce que cette structure d'appui fournit une surface de butée (12) grâce à laquelle l'élément à surface de friction est guidé de manière telle que ce dernier est poussé contre la surface de friction complémentaire sous l'action d'une composante de force (FF1) produite par le ressort de torsion et / ou d'une force de friction (F3) opposée au sens de tension et introduite par le biais de la surface de friction.
PCT/EP2007/058519 2006-09-15 2007-08-16 Dispositif tendeur pour une transmission par lien souple Ceased WO2008031687A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102006044178.8 2006-09-15
DE200610044178 DE102006044178A1 (de) 2006-09-15 2006-09-15 Spannvorrichtung für einen Zugmitteltrieb

Publications (1)

Publication Number Publication Date
WO2008031687A1 true WO2008031687A1 (fr) 2008-03-20

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WO (1) WO2008031687A1 (fr)

Cited By (1)

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CN106574695A (zh) * 2014-08-20 2017-04-19 博格华纳公司 具有储能和阻尼特征的旋转张紧器

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Publication number Priority date Publication date Assignee Title
DE102006054963B4 (de) * 2006-11-22 2020-11-05 Schaeffler Technologies AG & Co. KG Spannvorrichtung eines Zugmitteltriebs
DE102009014263B4 (de) 2009-03-20 2019-03-28 Schaeffler Technologies AG & Co. KG Zugmitteltrieb mit Schwingungsdämpfer
CN103174807B (zh) * 2013-04-01 2015-09-16 无锡永凯达齿轮有限公司 自动张紧器
RU2750157C1 (ru) * 2020-11-05 2021-06-22 Федеральное государственное бюджетное образовательное учреждение высшего образования "Воронежский государственный университет инженерных технологий" (ФГБОУ ВО "ВГУИТ") Натяжное устройство цепной передачи

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