EP1934500A1 - Maillon de chaine, chaine comportant ce maillon, entrainement par chaine ainsi forme et vehicule equipe d'un tel entrainement - Google Patents

Maillon de chaine, chaine comportant ce maillon, entrainement par chaine ainsi forme et vehicule equipe d'un tel entrainement

Info

Publication number
EP1934500A1
EP1934500A1 EP06805324A EP06805324A EP1934500A1 EP 1934500 A1 EP1934500 A1 EP 1934500A1 EP 06805324 A EP06805324 A EP 06805324A EP 06805324 A EP06805324 A EP 06805324A EP 1934500 A1 EP1934500 A1 EP 1934500A1
Authority
EP
European Patent Office
Prior art keywords
chain
link
curvature
pressure
plate
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.)
Withdrawn
Application number
EP06805324A
Other languages
German (de)
English (en)
Inventor
Martin Vornehm
Michael Pichura
Anton Simonov
Andreas Triller
Marcus Junig
Olga Ispolatova
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.)
Schaeffler Buehl Verwaltungs GmbH
LuK Lamellen und Kupplungsbau GmbH
Original Assignee
LuK Lamellen und Kupplungsbau Beteiligungs KG
LuK Lamellen und Kupplungsbau GmbH
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 LuK Lamellen und Kupplungsbau Beteiligungs KG, LuK Lamellen und Kupplungsbau GmbH filed Critical LuK Lamellen und Kupplungsbau Beteiligungs KG
Publication of EP1934500A1 publication Critical patent/EP1934500A1/fr
Withdrawn legal-status Critical Current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
    • F16G—BELTS, CABLES, OR ROPES, PREDOMINANTLY USED FOR DRIVING PURPOSES; CHAINS; FITTINGS PREDOMINANTLY USED THEREFOR
    • F16G5/00—V-belts, i.e. belts of tapered cross-section
    • F16G5/16—V-belts, i.e. belts of tapered cross-section consisting of several parts
    • F16G5/18—V-belts, i.e. belts of tapered cross-section consisting of several parts in the form of links
    • 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
    • F16G—BELTS, CABLES, OR ROPES, PREDOMINANTLY USED FOR DRIVING PURPOSES; CHAINS; FITTINGS PREDOMINANTLY USED THEREFOR
    • F16G13/00—Chains
    • F16G13/02—Driving-chains
    • F16G13/04—Toothed 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
    • F16G—BELTS, CABLES, OR ROPES, PREDOMINANTLY USED FOR DRIVING PURPOSES; CHAINS; FITTINGS PREDOMINANTLY USED THEREFOR
    • F16G13/00—Chains
    • F16G13/02—Driving-chains
    • F16G13/06—Driving-chains with links connected by parallel driving-pins with or without rollers so called open links

Definitions

  • Chain link this chain containing, and thus formed chain drive and thus equipped vehicle
  • the present invention relates to a link plate according to the preamble of claim 1. Further advantageous embodiments of the invention are described in the dependent claims. Furthermore, the invention relates to a link chain, which is formed using link plates according to the invention, as well as a running with the involvement of such a link chain chain drive. In addition, the invention relates to a vehicle having such a chain drive.
  • Chain straps and link chains of the type described above are, as also stated later, known in many ways from the prior art. Furthermore, it is known that such link plates and the tab chains formed by their use are limited in their power transmission capability and thus there is the possibility that initially a link plate is damaged, for example, by force peaks and fails. This failure can show up in a rupture of the link plate, starting from this chain straps can follow a failure or tearing of the entire link chain, since each arranged between the same joints further link plates must take the power transmission of the broken link plate with and thus more heavily loaded are. This increased load causes the individual link plates to come closer to their limit of the force transmission capability, or even exceed this.
  • the invention is an object of the invention to provide a link plate and a strap chain using this, which has a higher strength.
  • the wear is to be reduced and the elastic elongation of the link plate or the link chain smaller.
  • the present invention should lead to having to assemble fewer parts for the production of a link chain. This is achieved according to the invention in that the lashing thickness of at least individual link plates is made larger, so that the link plate according to the invention is thicker.
  • the lashing thickness can not be arbitrarily increased with regard to the punching quality and the rocker or Druck Anlagenbiegebelastung. It should also be taken into account that the tool costs increase disproportionately depending on the punching thickness.
  • a link plate and their use in a silent chain also has the advantage that the tilting effect at the inlet of the chain in the gear, caused by a moment between tooth and lug, is favorably influenced, as a good perpendicularity of lug to tooth is guaranteed. This results in a better leadership and reducing or avoiding a shear stress in the teeth. In addition, this results in a lower pressure, so that edge flow can be reduced or avoided.
  • the ratio of pitch I to tab thickness d is in the range from 3.7 to 5.5.
  • the weight or height of the piece piece h and the strip thickness d are in the ratio of 1.3 to 1.9.
  • the ratio of weighing or pressure piece width w to tab thickness d in the range between 0.8 and 1.2 is also particularly favorable.
  • the ratio of web width s to tab thickness d is in the range between 0.8 and 1.2.
  • the present invention also relates, as mentioned above, to a plate link chain for, in particular, a vehicle transmission, a vehicle drive train or a vehicle engine secondary drive, with a plurality of link plates articulated to each other via weighing or pushing pieces, wherein the pressure pieces run transversely to the longitudinal direction of the link chain and on the pressure pieces and the link plates each curved formed contact surfaces are formed, along which abut the thrust pieces and link plates for power transmission to each other and the respective contact surface extending transversely to the longitudinal direction of the link chain width and in a transverse to the width section in the longitudinal direction of the link chain considered an arc length has.
  • the pressure pieces When used in a stepless cone pulley Kettenvariator (CVT) as part of the vehicle transmission, the pressure pieces have specially shaped end faces, via which the tensile force between the conical disks and the chain is transmitted as frictional force.
  • the link chain is a toothed chain, ie the link plates have teeth on at least one side, via which the tensile force is transmitted between the gears and the chain.
  • tooth chains have become known in the art, for example, by US Pat. No. 4,906,224.
  • Such toothed chains are used in several places in the vehicle drive, eg in four-wheel transfer cases, in front-transverse transmissions for bridging the axial distance to the differential, as drive chains of a geared internal hydraulic auxiliary unit, as a valve train timing chain of an internal combustion engine or as a drive chains other Hilfsaggre- gate of the vehicle (coolant pump, lubricant pump, air conditioning compressor, alternator, starter motor, auxiliary hybrid engine, brake booster and the like).
  • a link chain of the type mentioned here is composed of a plurality of link plates which are hingedly connected to each other via plungers.
  • the power transmission between the pressure pieces and the link plates takes place at contact surfaces, which are formed both on the pressure pieces and on the link plates and along which rest the plungers and the link plates together.
  • the plungers are also referred to as pins or pins, which are used in pairs as rocker joints in two flap openings, which are often grown together in chains for conical-pulley transmission to a large opening.
  • the pressure piece pair lying opposite one another in an opening of the plate-link chain adjoins one another on the rolling area or the rolling surface.
  • a rolling movement takes place at this point around the bending angle predetermined by the geometry of the pressure pieces.
  • the contact surfaces must also meet the requirement of a tear-resistant and durable lashing chain.
  • the surface pressures in the contact zone between the pressure pieces and the link plates must not exceed specified values.
  • contact surfaces with a small curvature and thus a large radius of curvature were required here. After the known tab chains described above, therefore, an increase in the radius of curvature is required in order to achieve a reduction of the contact pressure in the contact surfaces.
  • FIG. 1 of the drawing shows that in the transition region between the small radius of curvature designated K and the large radius of curvature designated G, a compressive stress peak occurs and the compressive stresses in the region of the small radius of curvature are not significantly higher than in the region of the large radius of curvature.
  • the insight is thus to the effect that not the small radius of curvature is responsible for the occurrence of locally high pressure voltage peaks, but represents the transition region from one radius of curvature to another radius of curvature an impurity.
  • the contact surfaces which has at least three areas with different curvature viewed along its curve length in a section along the longitudinal direction of the link chain, so that large jumps are avoided in the bends, but still areas with small and large curva- tion radii are provided to counteract a rotation of the pressure pieces relative to the link plates.
  • the realization is realized that in contrast to the known knowledge is not important to create the smallest possible curvature with large radii of curvature in the contact surface area, but a sufficient number of different curvatures of the contact surface of the pressure pads and the contact surface of the link plates is provided, but to high voltage spikes leading to curvature jumps are avoided.
  • the ratio of the largest curvature to the smallest curvature is at least the factor of two.
  • the curvatures in the at least three regions within the individual regions along the arc length can each be constant, ie the curve length or arc length can be composed by at least three circular arc segments, viewed in a section along the axial longitudinal direction of the link chain. This ensures that the jumps between the different curvatures of the arc segments turn out small and viewed as a radius of curvature viewed in pressure pieces of a link chain for a vehicle drive jumps of the individual radii of curvature, for example, only from 1 mm to 3 mm and then to 5 mm compared to a too high Stress peaks leading to large radial jump from 1 mm to 5 mm.
  • the curvatures in the at least three regions within the individual regions change along the arc length in each case.
  • This contact surfaces are possible, which viewed in a AxiallCodesmale the link chain composed of spiral segments whose curvature and thus the radius of curvature changes continuously along the arc length.
  • the viewed in the axial longitudinal section composed of elliptical segments whose curvature changes continuously between a minimum value and a maximum value.
  • segments of hyperbola or parabolas are possible as segments of the curve length or, more generally, bearing surfaces that have curve segments along the arc length whose second derivative is continuous.
  • the contact surface has along the arc length curve segments whose along the arc length smallest radius of curvature is largely in the middle of the arc length.
  • Figure 1 shows the course of the surface pressure in the contact surface area of the contact surfaces of a pressure piece and a link plate in a known configuration with two significantly different radii of curvature.
  • Fig. 2 is a schematic representation of a known link chain for use in a CVT transmission, wherein Fig. 1 of the drawing is an enlarged view of the area designated A;
  • Fig. 3 is an enlarged view of a link plate and a pressure piece according to a first embodiment
  • 4 is an enlarged view of a pressure piece according to a second embodiment
  • Fig. 5 is an enlarged view of a pressure piece according to a third embodiment and a view of a toothed chain, which is composed of these pressure pieces;
  • Fig. 6 is an enlarged view of a pressure piece for explaining individual names
  • FIG. 7 shows a representation similar to FIG. 1 for explaining the surface pressure curve in the contact surface region between pressure piece and link plate of a plate-link chain
  • Fig. 8 is a link plate with a rocker pressure piece according to the invention.
  • Fig. 1 shows the course of the surface pressure in the contact surface area between a pressure piece and a link plate of a known link chain.
  • K the small radius of curvature
  • G the large radius of curvature
  • FIG. 2 of the drawing shows a section of a known CVT link chain 1, which is composed of a plurality of weighing or pressure pieces 2, 3 and link plates 4.
  • the area marked A in FIG. 2 is shown enlarged in FIG. 1 of the drawing, so that FIG. 1 shows the pressure piece 2 and the link plate 4.
  • Fig. 3 of the drawing shows an enlarged view of a pressure piece 5 and a link plate 6 of a link chain 7 according to a first embodiment.
  • two abutment surface regions 8 and 11 are formed between the pressure piece 5 and the link plate 6, wherein the abutment surface region 8 is formed by a contact surface 9 on the pressure piece 5 and a complementarily shaped bearing surface 10 on the link plate 6. Similarly is the contact surface area 11 from a contact surface on the pressure piece 5 and a contact surface on the link plate 6 together.
  • each contact surface 9, 10 has an arc length or curve length, which is represented in the drawings by a respective brace 12.
  • Fig. 3 of the drawing shows a first embodiment of a link chain according to the present invention, in which the abutment surface 9 has been formed on the pressure piece 5 and complementary thereto, the contact surface 10 on the link plate 6 with areas with different curvatures.
  • the regions with different curvatures with correspondingly different radii of curvature 13, 14, 15, 16 are shown by dashed lines in FIG. 3 of the drawing, wherein the respective curvature radius 13, 14, 15, 16 perpendicular to the Regions shown with different curvatures is shown in order to graphically represent the difficult to visually visible to the human eye different curvatures on the contact surface 9, 10 can.
  • FIG. 3 of the drawing makes it readily apparent that the curvature in the region of the radius of curvature 13 is smaller than in the region of the radius of curvature 14, so that the radius of curvature in region 13 is greater than in region 14.
  • the radius of curvature is in the region 15 even smaller than in the area 14 and according to the curvature in the area 15 is greater than in the area 14.
  • the contact surface 9 of the pressure element 5 and complementary to the contact surface 10 of the link plate 6 in the contact surface area 8 already three different curvatures along the arc length or curve length the contact surface 9, 10 on.
  • FIG. 3 of the drawing makes it readily apparent that the curvature in the region of the radius of curvature 13 is smaller than in the region of the radius of curvature 14, so that the radius of curvature in region 13 is greater than in region 14.
  • the radius of curvature is in the region 15 even smaller than in the area 14 and according to the curvature in the area 15 is greater than in the area 14.
  • FIG. 3 also shows that a further fourth region 16 with a radius of curvature 16 differing from the radii of curvature radii 13, 14, 15 is formed on the abutment surface 9, 10 along the arc length.
  • the contact surface area 11 also has areas with different curvatures, in which case only three areas with different curvatures are provided.
  • Fig. 4 of the drawing now shows a pressure piece of a plate chain according to a second embodiment, wherein this pressure piece is again a pressure piece of a plate chain for a conical-pulley transmission.
  • the pressure piece 5 is denoted by the reference numeral 17, the rolling surface, with which the pressure piece 5 on the opposite pressure piece (it is again a pressure piece pair) rolls, the basic configuration with reference to FIG. 2 of the drawing can be seen.
  • the pressure piece 5 in turn has two contact surfaces 18, 19, which are arranged on complementary trained contact surfaces of a link plate, not shown.
  • the upper abutment surface 18 has a point designated B, at which the maximum curvature lies, that is, the turn radius, in turn, perpendicular to the contact surface 18 for explanation has its minimum. From this point B, the radius of curvature increases in both directions, so that the curvature continuously decreases in both directions from the point B on the contact surface 18. From the point B, the radius of curvature in the direction of the arrow 20 increases in accordance with segments of ellipses and in the direction of the arrow 21 corresponding to segments of a spiral.
  • Fig. 4 shows in the lower contact surface 18 from the point C with the maximum curvature of a similar behavior, the radius of curvature in the direction of the arrow 22 corresponding to a hyperbola increases and in the direction of arrow 23 according to a segment of a branch of a parabola.
  • Fig. 5 of the drawing shows a representation similar to Fig. 4, wherein it is in the illustrated in Fig. 5 of the drawing pressure piece 24 is a pressure piece of a toothed chain, which can be used for example as a toothed chain for a drive or as a toothed chain in conveyors. Also, the pressure piece 24 has a rolling surface 25, where it can roll on the associated pressure piece of the pressure piece pair. The pressure piece 24 also has an upper contact surface 26 and a lower contact surface 27.
  • the configuration of the contact surface 26 is chosen so that from the point B of the radius of curvature (the radius of curvature is again shown in dashed lines perpendicular to the contour of the contact surface) in both directions of the contact surface 26 along the arc length, which in turn via the brace 12 is shown , grows.
  • the radius of curvature at the abutment surface 27 increases from the maximum-curvature point C (corresponding to the minimum curvature radius) in both directions.
  • a pressure-stiffer design of the pressure pieces is possible when the largest curvature and thus the minimum radius of curvature of the contact surface extends approximately in the middle of the contact surface over the arc length or curve length of the contact surface considered.
  • Fig. 6 of the drawings will now be used to explain this relationship.
  • the letters B and C designate the points on the upper abutment surface or the lower abutment surface which have maximum curvature and thus the minimum radius of curvature within the respective abutment surface.
  • the points B and C are approximately in the middle of the arc length 28, below which also runs the area with the dashed radii of curvature.
  • the point of maximum curvature along the arc length is approximately at the center of the abutment surface (measured over the arc length 28)
  • similarly beneficial effects are achieved when the point B and C in FIG Range D is from 40 to 60% of the arc length 28.
  • This area coincides with the angle of 30 to 60 degrees of the tangent to the lower abutment surface of the pressure piece, wherein the angle of 30 to 60 degrees between the tangent 29 and the chain running direction 30 is measured. If now the point with maximum curvature of the respective contact surface within 40 to 60% of the total length of the sheet length 28 or within 30 to 60 degrees of the tangent 29 to the chain direction 3, then rigid and thus less deflection prone pressure pads, which in turn results in a increased transmittable with the link chain or tooth chain traction leads.
  • FIG. 7 of the drawing now shows a contact pressure curve in the lower contact surface chosen in the representation between the pressure piece 5 and the link plate 6 of a link chain (wherein the term link chain also includes a toothed chain).
  • link chain also includes a toothed chain.
  • FIG. 8 shows a link plate 4 according to the invention as well as a weighing piece or pressure piece 2 of a pressure piece pair. The designations used there serve to clarify the already mentioned dimensional relationships and have the following meanings:

Landscapes

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

Abstract

Maillon de chaîne (4) et chaîne pour un entraînement de véhicule qui comporte une pluralité de maillons articulés les uns aux autres par l'intermédiaire d'éléments de pression (2), lesdits éléments de pression présentant une extension transversale par rapport à la direction longitudinale du maillon de chaîne. Sur les éléments de pression et sur les maillons de chaîne sont formées des surfaces d'appui par l'intermédiaire desquelles les éléments de pression et les maillons de chaîne reposent les uns contre les autres pour la transmission de la force, les surfaces d'appui respectives possédant une forme optimale.
EP06805324A 2005-10-06 2006-09-21 Maillon de chaine, chaine comportant ce maillon, entrainement par chaine ainsi forme et vehicule equipe d'un tel entrainement Withdrawn EP1934500A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102005047877 2005-10-06
PCT/DE2006/001673 WO2007038909A1 (fr) 2005-10-06 2006-09-21 Maillon de chaine, chaine comportant ce maillon, entrainement par chaine ainsi forme et vehicule equipe d'un tel entrainement

Publications (1)

Publication Number Publication Date
EP1934500A1 true EP1934500A1 (fr) 2008-06-25

Family

ID=37621928

Family Applications (1)

Application Number Title Priority Date Filing Date
EP06805324A Withdrawn EP1934500A1 (fr) 2005-10-06 2006-09-21 Maillon de chaine, chaine comportant ce maillon, entrainement par chaine ainsi forme et vehicule equipe d'un tel entrainement

Country Status (6)

Country Link
EP (1) EP1934500A1 (fr)
JP (1) JP2009510367A (fr)
KR (1) KR20080050562A (fr)
CN (1) CN101283196B (fr)
DE (1) DE112006002562A5 (fr)
WO (1) WO2007038909A1 (fr)

Families Citing this family (7)

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Publication number Priority date Publication date Assignee Title
GB0507711D0 (en) 2005-04-15 2005-05-25 Vectura Group Plc Improved blister piercing
JP5252183B2 (ja) * 2008-02-28 2013-07-31 株式会社ジェイテクト 動力伝達チェーンおよびこれを備える動力伝達装置
DE102012024395A1 (de) * 2012-12-13 2014-06-18 Iwis Motorsysteme Gmbh & Co. Kg Reibungsarme Hülsengelenkkette
GB201301192D0 (en) 2013-01-23 2013-03-06 Vectura Delivery Devices Ltd A blister piercing element for a dry powder inhaler
CN106461025B (zh) * 2014-05-07 2019-02-26 舍弗勒技术股份两合公司 用于板链的摆式接头
CN105598354B (zh) * 2015-12-29 2018-05-18 杭州东华链条集团有限公司 一种cvt链条链板自动连续冲压成型工艺
DE102019110493A1 (de) * 2019-04-23 2020-10-29 Schaeffler Technologies AG & Co. KG Druckstück mit optimiertem Dickenverhältnis sowie Laschenkette mit Druckstück

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US4908224A (en) 1982-09-30 1990-03-13 Lois Yoder Process for debittering soybean grit
JPH0484851U (fr) 1990-11-30 1992-07-23
ES2207242T3 (es) * 1998-07-04 2004-05-16 Renold Plc Una cadena.
JP3076023B1 (ja) 1999-03-03 2000-08-14 株式会社椿本チエイン 低摩耗伸びサイレントチェーン
US7048665B2 (en) * 1999-04-28 2006-05-23 Borgwarner Inc. Power transmission chain having links with lateral spacing elements
JP3905322B2 (ja) * 2001-03-05 2007-04-18 株式会社椿本チエイン サイレントチェーン
NL1023120C2 (nl) * 2002-04-10 2006-04-25 Luk Lamellen & Kupplungsbau Werkwijze voor het optimaliseren van schakels van een schakelketting alsmede schakels voor een schakelketting.

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Title
See references of WO2007038909A1 *

Also Published As

Publication number Publication date
JP2009510367A (ja) 2009-03-12
CN101283196A (zh) 2008-10-08
WO2007038909A1 (fr) 2007-04-12
CN101283196B (zh) 2011-09-21
KR20080050562A (ko) 2008-06-09
DE112006002562A5 (de) 2008-07-03

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