WO2017036471A1 - Tendeur mécanique de lien souple pour transmission primaire - Google Patents

Tendeur mécanique de lien souple pour transmission primaire Download PDF

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Publication number
WO2017036471A1
WO2017036471A1 PCT/DE2016/200362 DE2016200362W WO2017036471A1 WO 2017036471 A1 WO2017036471 A1 WO 2017036471A1 DE 2016200362 W DE2016200362 W DE 2016200362W WO 2017036471 A1 WO2017036471 A1 WO 2017036471A1
Authority
WO
WIPO (PCT)
Prior art keywords
housing
piston
clamping piston
clamping
locking
Prior art date
Application number
PCT/DE2016/200362
Other languages
German (de)
English (en)
Inventor
Johanna Mayer
Christopher Krawietz
Christian Hartmann
Klaudyna OSTERMAIER
Lajos Farkas
Original Assignee
Schaeffler Technologies AG & Co. 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 Technologies AG & Co. KG filed Critical Schaeffler Technologies AG & Co. KG
Publication of WO2017036471A1 publication Critical patent/WO2017036471A1/fr

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
    • 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
    • F16H2007/0802—Actuators for final output members
    • F16H2007/0808—Extension 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
    • F16H7/0848—Means for varying tension of belts, ropes, or chains with means for impeding reverse motion
    • F16H2007/0853—Ratchets
    • 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
    • F16H7/0848—Means for varying tension of belts, ropes, or chains with means for impeding reverse motion
    • F16H2007/0853—Ratchets
    • F16H2007/0855—Ratchets comprising a clip member engaging with the rack teeth
    • 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
    • F16H2007/0876—Control or adjustment of actuators
    • F16H2007/088—Manual adjustment
    • 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
    • F16H2007/0891—Linear path

Definitions

  • the invention relates to a mechanical Zakaranzspanner for a Switzerlandstofftneb a drive train / an internal combustion engine, such as a diesel or gasoline engine of a motor vehicle, such as a motorcycle or a snowmobile, with a housing, a slidably received in this housing
  • Clamping piston wherein the clamping piston is biased by a spring element relative to the housing in a clamping direction, as well as with an elastically adjustable locking element locking device by means of which the clamping piston is supported / held in several blocking positions in its axial position against the clamping direction /, wherein the clamping piston and the housing are provided with latching structures of the locking device, in which the locking element engages positively in the locking positions and wherein the locking element is connected to the clamping piston, that it participates a sliding movement of the clamping piston.
  • a mechanical spring plate tensioner which is provided for a traction mechanism drive of an internal combustion engine.
  • This tensioner has a housing and a piston which can be extended out of the housing and which is prepared for applying pressure to a tensioning rail of the traction mechanism drive.
  • this has a locking device which allows the piston to extend out of the housing, but impedes or prevents retraction, wherein detents or projections are present in the housing, which can be brought into positive engagement with the locking device.
  • the locking device is further designed as a spring.
  • the present invention therefore has the object to remedy these known from the prior art disadvantages and in particular to provide a Switzerlandstoffspanner available, which should be further simplified in its construction, so that in particular its production can be implemented more cheaply.
  • the housing on a radial outer side has a hub-shaped receptacle, wherein the clamping piston has an internal thread, which can be brought into engagement with an adjusting tool in order to position the Switzerlandstoffspanner at an initial assembly.
  • the housing has on a radial outer side a hub-shaped receptacle, which in turn is directly prepared for receiving a tensioning rail or for direct contact of the traction means, such as the belt or the chain.
  • the tensioning piston has an internal thread which can be brought into engagement with an adjusting tool / setting tool / adjusting tool in order to position / adjust the tensioning means tensioner in its initial assembly (in a drive train of the motor vehicle / in the traction mechanism drive) / in its spatial position.
  • the internal thread is used in this case for clever positioning of Glasstoffspanners in the traction drive / chain drive of the drive train.
  • the blocking element is connected to the tensioning piston such that it undergoes a displacement movement of the tensioning piston (completely).
  • the structure is substantially simplified, with the corresponding latching structures being introduced, for example, directly during a primary forming operation of the tensioning piston or the housing.
  • the clamping piston or the housing is thus particularly inexpensive to produce. As a result, the production is much easier and cheaper implemented. Further advantageous embodiments are claimed in the subclaims and explained in more detail below.
  • clamping piston and the housing are formed / configured directly / directly with the latching structures of the locking device, i. in that the latching structures of the latching device are introduced directly / directly into the tensioning piston and the housing, into which latching structures the blocking element positively engages in the respective blocking positions.
  • the component cost is further reduced.
  • the blocking element is designed as a resiliently deformable in the radial direction spring ring, since then a particularly cost-locking element is implemented. If, furthermore, a first latching structure of the latching device is arranged on an inner peripheral side of the housing, it is designed to save space in particular.
  • the first latching structure is in the form of a plurality of circumferentially extending, mutually axially adjacent (ie, lined up) RastierausEnglishept (preferably in the form of grooves / circumferential grooves) is formed.
  • Rastierausbian aus also geometrically separated from each other by annular, axially in the clamping direction of the clamping piston ramps, the locking element is defined in the respective blocking position supported with a certain biasing force, and when moving in a further blocking position (seen in the clamping direction) in the axial direction along the ramp defined in the radial direction is compressed.
  • the blocking element is supported particularly securely in the respective blocking position.
  • the ramps each form a support surface extending in the radial direction of the tensioning piston, which supports the blocking element against movement of the tensioning piston against the tensioning direction.
  • Each support surface extends at least in sections in the radial direction and at least in sections along the outer contour of the blocking element. This ensures a particularly stable support.
  • the second latching structure in the form of a peripheral circumferential receiving recess (preferably in the form of a groove / circumferential groove) is formed.
  • the second latching structure is particularly compact.
  • the blocking element in the respective blocking positions in the axial direction is received in the receiving recess of the clamping piston so as to be non-displaceable, the blocking element can also be integrated in the clamping piston in a space-saving manner.
  • the locking device has return recesses. It is particularly advantageous if in each case a return recess which widens in the radial direction relative to the receiving recess or recesses is formed on one end of the first latching structure, in which return recesses the blocking element can relax in the radial direction over the first latching structure, and wherein the blocking element then between the receiving recess and a
  • the clamping piston has an axially extending guide recess, in which a firmly connected to the housing bolt as Protection against rotation of the clamping piston projects relative to the housing. As a result, a secure guidance of the clamping piston is implemented.
  • a mechanical tensioning device is thus implemented, which is preferably shaped in the form of a chain tensioner and prepared for a primary drive.
  • this is prepared for a primary drive of a motorcycle / a snowmobile.
  • the inventive concept is based on the formation of a latching mechanism for a mechanical tensioner.
  • the invention comprises a housing and a piston with grooves / grooves / recesses, which serve as a latching structure.
  • Fig. 1 is a perspective view of a longitudinally cut Wergebachspanners invention according to a preferred embodiment, wherein the section along a tensioning piston and a housing of Werbachspanners is performed, whereby the inner structure of this Buchstoffspanners and the leadership of the clamping piston in the housing can be seen, and a detail view of the traction mechanism according to Fig. 1 in longitudinal section in the region of the clamping piston, wherein a locking device for supporting the can be seen in detail.
  • the traction mechanism 1 is shown in its entirety in FIG.
  • the Buchstoffspanner 1 is designed as a purely mechanical Werbachspanner 1 and thus forms no fluidic pressure chamber between its housing. 2 and his tensioning piston 3 off.
  • the Switzerlandstoffspanner 1 is formed / prepared in its operation for tensioning a trained as a chain traction means in an embodiment of the traction mechanism as a chain drive.
  • it is also designed / prepared as a belt drive for tensioning a tensioning means designed as a belt in an embodiment of the traction mechanism drive.
  • the traction mechanism is a primary drive of a drive train of a motor vehicle, which is designed as a motorcycle or snowmobile, and rotatably connects an output shaft of an internal combustion engine with another drive shaft, such as a transmission shaft of the drive train for driving the motor vehicle.
  • the traction means 1 comprises in a conventional manner the housing 2, which receives the clamping piston 3 within a cylindrical guide recess 18 in its axial direction which is formed here coaxially to the axial direction of the guide recess 18 slidably.
  • the clamping piston 3 is thereby displaceably mounted to the housing 2.
  • the guide recess 18 is introduced as an axial bore in the housing 2.
  • the clamping piston 3 is so matched with its outer peripheral side 14 on an inner peripheral side 1 1 of the housing 2 / the guide recess 18 that it is guided in its axial direction by means of a sliding / clearance fit.
  • the tensioning piston 3 projects out of the housing 2 at a first end 26 of the guide recess 18, at which the guide recess 18 opens toward the environment.
  • the tensioning piston 3 is biased during operation in a tensioning direction which corresponds to an extension direction of the tensioning piston 3 out of the housing 2 beyond the first end 26.
  • This bias of the clamping piston 3 relative to the housing 2 is realized by a spring element 4.
  • the spring element 4 is designed as a helical compression spring.
  • the spring element 4 is inserted in an intermediate space 27 between the housing 2 and the clamping piston 3 in the region of the guide recess 18, which intermediate space 27 is always axially spaced from the first end 26 during operation.
  • the spring element 4 is supported on an end face facing away from the clamping direction of the clamping piston 3 and on the housing 2.
  • the intermediate space 27, in which the spring element 4 is received on reason of the execution of Switzerlandstoffspanners 1 as a mechanical Switzerlandstoffspanner 1 open to the environment / depressurized.
  • a piston anti-rotation device 19 is also formed.
  • This anti-piston device 19 is arranged between the housing 2 and the clamping piston 3 such that the clamping piston 3 is secured against rotation relative to the housing 2 in its axial direction is displaceable.
  • the piston anti-rotation device 19 has in this embodiment a bolt 17 which anchored on the one hand in the housing 2 / fastened, namely preferably (screwed) is pressed, and on the other hand in an elongated, in the axial
  • the bolt 17 extends in the radial direction of the clamping piston 3 and protrudes in the radial direction from the outside inwards into the guide recess 16, under the rotation-proof support of the clamping piston 3 relative to the housing 2.
  • the clamping piston 3 is still hollow.
  • the clamping piston 3 is thus also referred to as a hollow piston. Consequently, the clamping piston 3 has an axially extending inner hole 20 which extends coaxially to its longitudinal axis.
  • This inner hole 20 is designed here as a bore.
  • Tensioning piston 3 / of the inner hole 20 is an internal thread 9 is attached.
  • This internal thread 9 serves for positive and positive reception of an adjusting tool not shown here for clarity (preferably a threaded rod or a tool having a threaded rod) for simple positioning of the traction mechanism 1 in the traction mechanism / relative to the traction mechanism in the initial assembly of Traction device tensioner 1.
  • This locking device 6 is formed with a first latching structure 7, which is formed on an inner peripheral side of the housing 1 1 1 / integral / stoffeinturban, a second
  • Locking structure 8 which is integrally / directly / stoffeinturban formed on an outer peripheral side 14 of the clamping piston 3, and a (separately formed to the first and the second latching structure 7, 8) locking element 5 equipped / formed.
  • the Rastier healthy 6 is provided in the usual manner for supporting the clamping piston 3 against its clamping direction / against its extension direction out of the housing 2 out / in its direction of retraction into the housing 2 in / designed.
  • the latching structures 7 and 8 form positive receptacles for the blocking element 5, which engages positively in the respective blocking position of the clamping piston 3 relative to the housing 2 in these two latching structures 7 and 8 and thus the clamping piston 3 in the axial direction relative to the housing 2 in this Entry direction defines / supports / blocks.
  • the exact structure of the locking device 6 is particularly well visible in Fig. 2.
  • the first latching structure 7 is formed by a plurality of latching recesses 12 extending in the form of circulating grooves extending along the circumference / in the circumferential direction of the inner circumferential side 11.
  • the RastierausEnglishept 12 are strung together in the axial direction and in each case by ramp-shaped elevations, the ramps 13, geometrically separated from each other. Between each two adjacent ones
  • RastierausEnglisheptept 12 is always a ramp 13 is arranged, which also rotates in the circumferential direction.
  • the ramp 13 has on a (axial) side, which is directed in the retraction direction of the clamping piston 3, a smaller pitch than on another (axial) side, which is directed in the extension direction of the clamping piston 3.
  • the blocking element 5 is designed as a spring ring 10, which is arranged in the radially outward biased between the clamping piston 3 and the housing 2.
  • the spring ring 10 is arranged such that it is biased biased in a clamping state of the Glasstoffspanners 1 / of the clamping piston 3 in the radial direction of the clamping piston 3 in the respective RastierausEnglishept 12 in the respective axial position / locking position.
  • Each ramp 13 forms a support surface 21, which extends annularly and extends partially in the radial direction to the outside.
  • the blocking element 5 is received in a form-fitting manner in the axial direction of the clamping piston 3 in the clamping state in a receiving recess 22 which is introduced on an outer peripheral side 14 of the clamping piston 3 as a groove.
  • the support surface 21 extends at least in a radially inner region in the radial direction in such a way that the blocking element 5 by means of this support surface 21 in the Ein- driving direction of the clamping piston 3 is supported in the blocking positions.
  • This return recess 15 is also formed as a circumferential groove / annular groove and spatially / geometrically separated by a web 23 of the receiving recess 22.
  • the locking element 5 is inserted in a clamping state of the locking device 6 / of Switzerlandstoffspanners 1 in the receiving recess 22 of the clamping piston 3.
  • the tensioning piston 3 has a return recess 15, but also the housing 2, which return recesses of the housing 2 are identified by the reference numerals 28a and 28b.
  • the web 23 on the clamping piston 3 is selected in its outer diameter and on matched the housing 2, that the clamping piston 3 in the clamping state (ie, in a positioning of the locking element 5 in the receiving recess 22) in an axial region of the first latching structure 7 not against the extension direction and the blocking element 5 can not be displaced into the return recess 15, whereas the tensioning piston 3 can be moved counter to the extension direction in the restoring state (ie when the blocking element 5 is positioned in the return recess 15) in an axial region of the first latching structure 7.
  • the tensioning piston 3 can be displaced relative to the blocking element 5 until the blocking element 5 finally comes into contact with the tensioning piston 3 in the axial region of the return recess 15.
  • the tensioning piston 3 is in turn moved back in its retraction direction, so that it can be pushed completely into the housing 2 in the axial direction due to the formation of the return recess 15 until, in turn, the blocking element 5 at the axial height the second return recess 28b is located. Then the locking element 5 snaps in the radial direction outwards into the second
  • the housing 2 has a hub-shaped receptacle 25 on a radial outer side, which in turn is directly prepared for receiving a tensioning rail or for direct contact of the traction means, such as the belt or the chain.
  • a mechanical chain tensioner (Zugffenspanner 1) implemented, the necessary bias is applied by a spring (spring element 4) which presses on the piston (clamping piston 3), wherein a drop of the piston 3 (in its retraction direction) is prevented by the latching steps (Rastieraus strictlyungen 12).
  • the chain tensioner 1 can be used for various gear ratios of the drive train by being screwed at the initial position to the appropriate position.
  • the piston 3 has an internal thread 9.
  • the chain tensioner 1 / the tensioning piston 3 can be screwed onto an adjusting tool embodied as a threaded rod and be positioned in an initial position. Due to this positioning property of the chain tensioner 1 is carried out against rotation per se, whereby the assembly facilitates and twisting during operation is prevented.
  • the internal thread 9 does not serve to secure the chain tensioner 1 against twisting, but rather the anti-rotation protection is carried out by the anti-piston device 19.

Abstract

L'invention concerne un tendeur (1) mécanique de lien souple pour une transmission primaire d'un groupe motopropulseur, ce tendeur comprenant un corps (2), un piston de tension (3) logé coulissant dans le corps (2), ce piston de tension étant précontraint dans une direction de tension par rapport au corps (2) au moyen d'un élément ressort (4), ainsi qu'un dispositif d'encliquetage (6) qui présente un élément de blocage (5) déplaçable élastiquement et au moyen duquel le piston de tension (3) est soutenu dans plusieurs positions de blocage dans sa position axiale à l'encontre de la direction de tension. Le piston de tension (3) et le corps (2) sont pourvus de structures d'encliquetage (7, 8) du dispositif d'encliquetage (6) dans lesquelles l'élément de blocage (5) s'engage par complémentarité de forme dans les positions de blocage, l'élément de blocage (5) étant relié au piston de tension (3) de telle sorte qu'il suit un mouvement de coulissement du piston de tension (3).
PCT/DE2016/200362 2015-09-04 2016-08-08 Tendeur mécanique de lien souple pour transmission primaire WO2017036471A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102015216972.3 2015-09-04
DE102015216972 2015-09-04

Publications (1)

Publication Number Publication Date
WO2017036471A1 true WO2017036471A1 (fr) 2017-03-09

Family

ID=56979299

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/DE2016/200362 WO2017036471A1 (fr) 2015-09-04 2016-08-08 Tendeur mécanique de lien souple pour transmission primaire

Country Status (2)

Country Link
DE (1) DE102016216489A1 (fr)
WO (1) WO2017036471A1 (fr)

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2356682A (en) * 1999-11-26 2001-05-30 Tsubakimoto Chain Co Tensioner
JP2006090449A (ja) * 2004-09-24 2006-04-06 Ntn Corp チェーンテンショナ
DE102013102935A1 (de) * 2012-04-20 2013-10-24 Tsubakimoto Chain Co. Ring-Spannvorrichtung
DE102013201445A1 (de) 2013-01-30 2014-07-31 Schaeffler Technologies Gmbh & Co. Kg Mechanischer Federblechspanner

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4415960A1 (de) 1994-05-06 1995-11-09 Schaeffler Waelzlager Kg Transportsicherung bei einem Kettenspanner
DE102006022789A1 (de) 2005-05-19 2007-05-31 Schaeffler Kg Spannvorrichtung für Ketten- oder Riementriebe

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2356682A (en) * 1999-11-26 2001-05-30 Tsubakimoto Chain Co Tensioner
JP2006090449A (ja) * 2004-09-24 2006-04-06 Ntn Corp チェーンテンショナ
DE102013102935A1 (de) * 2012-04-20 2013-10-24 Tsubakimoto Chain Co. Ring-Spannvorrichtung
DE102013201445A1 (de) 2013-01-30 2014-07-31 Schaeffler Technologies Gmbh & Co. Kg Mechanischer Federblechspanner

Also Published As

Publication number Publication date
DE102016216489A1 (de) 2017-03-09

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