WO2020048562A1 - Lien souple et transmission à variation continue dotée de celui-ci - Google Patents

Lien souple et transmission à variation continue dotée de celui-ci Download PDF

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Publication number
WO2020048562A1
WO2020048562A1 PCT/DE2019/100746 DE2019100746W WO2020048562A1 WO 2020048562 A1 WO2020048562 A1 WO 2020048562A1 DE 2019100746 W DE2019100746 W DE 2019100746W WO 2020048562 A1 WO2020048562 A1 WO 2020048562A1
Authority
WO
WIPO (PCT)
Prior art keywords
tabs
link
sequence
plate
links
Prior art date
Application number
PCT/DE2019/100746
Other languages
German (de)
English (en)
Inventor
Manuel Falk
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 WO2020048562A1 publication Critical patent/WO2020048562A1/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
    • 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

Definitions

  • the invention relates to a belt means for a, in particular continuously variable, transmission of a motor vehicle, with a link chain which has an arrangement of pressure pieces oriented transversely to the running direction of the belt means and links arranged parallel to the direction of travel, the pressure pieces engaging in openings in the links and Joints form links by means of which the plates are connected in an articulated manner, the plates being able to be grouped in plate sequences of immediately successive plates and each of the plate sequences extending from one to the other flank of the plate chain around a main axis of this plate sequence running perpendicular to the running direction, and wherein the tabs of each of the tab sequences are arranged one behind the other in two or three immediately adjacent rows of tabs running parallel to the respective main axis.
  • the invention further relates to a continuously variable transmission for a motor vehicle, having a first pair of conical disks, a second pair of conical disks and a belt means, which is arranged in the torque flow between the first pair of conical disks and the second pair of conical disks.
  • a corresponding continuously variable transmission is also referred to as a CVT transmission (CTV: Continuously Variable Transmission).
  • the belt means is arranged in the torque flow between a first pair of conical disks of the transmission and a second pair of conical disks.
  • the document DE 30 27 834 A1 shows a belt means for a continuously variable transmission of a motor vehicle, with a link chain which has an arrangement of pressure pieces oriented transversely to the running direction of the belt means and links arranged parallel to the direction of travel, the pressure pieces in openings of the links intervene and form joints via which the tabs are connected in an articulated manner.
  • the tabs can be grouped in tab sequences of immediately successive tabs and each of the tab sequences extends from one to the other flank of the link chain around a main axis of this link sequence running perpendicular to the running direction.
  • the tabs are in an example in the Two-link assembly and, in another example, arranged in a three-link assembly, so that the links of each link sequence are arranged one behind the other in two or three immediately adjacent rows of links running parallel to the respective main axis of this sequence.
  • NVH Noise, Vibration, Harshness
  • strength are the dominant issues in the further development of belts with link chains for the above-mentioned gears.
  • NVH Noise, Vibration, Harshness
  • strength is also a constant need to improve efficiency and wear and to make the running radius as small as possible.
  • the belt means according to the invention for a, in particular continuously adjustable, transmission of a motor vehicle, with a link chain which has an arrangement of pressure pieces oriented transversely to the running direction of the belt means and straps arranged parallel to the running direction, the pressure pieces in openings of the Engage tabs and form joints by means of which the tabs are connected in an articulated manner, the tabs being able to be grouped in tab sequences of immediately successive tabs and each of the tab sequences moving from one flank to another around a main axis of this tab sequence running perpendicular to the direction of travel extends the link chain and the links of each of the link sequences are arranged one behind the other in two or three directly adjacent link rows running parallel to the respective main axis, it is provided that the arrangement of the links in the respective link sequence also Regarding the requirements of a point symmetry and the requirements of an axis symmetry is asymmetrical.
  • Such an asymmetry means that the chain load designed more evenly and adapted to the individual stiffness differences of the gear discs.
  • the link chain is adapted by means of a specifically designed asymmetrical link pattern, whereby a more even contact pattern in the chain is achieved with acoustics felt to be pleasant.
  • the tab rows have the same number of tabs for each tab sequence.
  • each of the rows has six tabs.
  • the length of the tabs and the length of their openings in the running direction are the same for all tabs.
  • the tabs are all shaped identically.
  • each of the tab sequences has eight or twelve or eighteen tabs.
  • the straps are arranged in a two-strap association, eight or twelve straps per strap sequence or four or six straps per strap row are often provided.
  • the tabs are arranged in a three-link assembly, there are often twelve or eighteen tabs per link sequence or four or six tabs per row of tabs.
  • the distance between the joints and the adjacent joints in the link chain is constant.
  • Such a configuration is, for example, from the publication mentioned at the beginning
  • the wrapping means is designed as a pure wrapping chain formed by the link chain.
  • a der- like belting is characterized by high strength with a relatively simple structure.
  • the wrapping means also has an endless belt arranged on the link chain.
  • the wrapping means is formed by a wrapping chain with an endless belt running in parallel.
  • Such a design generally has a favorable effect on the acoustic behavior.
  • the pressure pieces for forming the joints are designed as weighing pressure pieces engaging in pairs in the openings of the tabs.
  • Such an embodiment is known, for example, from the document DE 30 27 834 A1 mentioned at the beginning.
  • the pressure pieces protrude from the arrangement on the flanks of the belt and have securing elements for securing the tabs and / or pressure pieces against loss.
  • securing elements are known from the literature.
  • the belt is designed as the above-mentioned belt .
  • Fig. 4 shows a link sequence of the link chain still another belt.
  • FIG. 1 shows a wrap means 10 which is designed as a wrap chain, which in turn is essentially designed as a link chain 12.
  • the main assembly of the link chain 12 is an arrangement 14 with pressure pieces 16 and (connecting) links 18, which are generally arranged either in a two-link linkage or in a three-link linkage.
  • the terms two-link bandage and three-link bandage are introduced and explained in the publication DE 30 27 834 A1 mentioned at the beginning using appropriate examples, so that their meaning will not be described again here.
  • the tabs 18 have openings 20, in which the pressure pieces 16 engage. While the tabs 18 are aligned along a running direction (double arrow 22) of the wrapping means 10, the pressure pieces 16 are aligned transversely, more precisely perpendicularly, to this running direction.
  • the belt means 10 is set up for the transmission of forces and torques in a cone pulley belt transmission (not shown), such a cone pulley belt transmission being arranged, for example, in the drive train of a motor vehicle between a drive machine and the driven axle.
  • the continuously variable transmission adjusts the transmission ratio to the respective driving and operating conditions of the drive machine or to the driver's requirements for the drive machine, for example due to an accelerator pedal actuation.
  • the belt means 10 connects two cone pulley pairs or cone pulley sets in the power flow or torque flow within the cone pulley belt transmission, whereby a variation of the transmission ratio with respect to the axis of the respective cone pulley pairs by varying the running radius of the belt pulley. can be realized and controlled in a targeted manner. This can be controlled in a targeted manner by means of a control unit.
  • One pair of conical disks of the transmission is connected or connectable to at least one transmission input shaft and the other pair of conical disks is connected or can be connected to an output shaft of the transmission.
  • the link chain 12 shown in FIG. 1 has the arrangement 20 of links 24 and the pressure pieces 22.
  • the pressure pieces 22 are designed as weighing pressure pieces (abbreviated WDS) and engage in pairs in the openings 26 of the tabs 24 to form a joint 30 each.
  • the joint 30 formed from two weighing pressure pieces is often also referred to as a weighing joint.
  • the tab arrangement of the tabs 24 can be selected, for example, in a two-link assembly or in a three-link assembly.
  • the weighing pressure pieces 22 arranged in pairs have sides facing one another, on which they roll against one another or on which they can slide against one another, so that the tabs 24 are connected to one another in an articulated manner by means of the pressure pieces 22 formed in this way.
  • the tabs 18 In order to hold and guide the pressure pieces 16 in the paired arrangement, the tabs 18 have guide cams projecting into the openings 20.
  • the link chain 12 also has securing elements (not shown) designed as pins (retaining pins) for securing the links 18 and / or pressure pieces 16 against loss.
  • the pins form projections which prevent the arrangement 14 of pressure pieces 16 and tabs 18 from falling apart.
  • the tabs 18 of the link chain 12 can be grouped into identically constructed link sequences 26, which run transversely to the direction of travel (double arrow 22) of the belt 10, directly following links 18.
  • FIGS. 2-4 shows such a link sequence 26, which defines the respective arrangement of the links 18 in the respective link chain 12.
  • FIG. 2 shows a link sequence 26, which runs around a main axis 28 of this link sequence 26 running perpendicular to the direction of travel (double arrow 22) from one side to the other flank 30, 32 of the link chain 12 in a kind of “zigzag line” - stretches.
  • the main axis 28 forms a kind of center of gravity line of the link sequence 26. Since the links 18 of the link chain 12 are arranged in a three-link arrangement, the links 18 of the link sequence 26 are in three directly adjacent link rows P1 running parallel to the main axis 28 of the link sequence 26 , P2, P3 arranged one behind the other.
  • the arrangement of the tabs 18 in the tab sequence 26 is asymmetrical with respect to the requirements of point symmetry and the requirements of axis symmetry.
  • the tab sequence 26 has eighteen tabs 18 with the numbering # 1 to # 18 in three tab rows P 1, P2, P3, so that each of the three tab rows P1, P2, P3 thus has six tabs 18.
  • Tabs P1 are tabs 18 # 2, # 4, # 7, # 9, # 16 and # 17.
  • the tabs 18 # 3, # 8, # 10, # 14, # 15 and # 18 are in the row of tabs P2.
  • the tabs 18 # 1, # 5, # 6, # 11, # 12 and # are in the row of tabs P3. 13.
  • link sequence 26 shown represents all link sequences 26 of the corresponding link chain 12.
  • the chain load is made more uniform than with a symmetrically designed link chain 12 and additionally adapted to the individual differences in stiffness of the cone pulley pairs referred to as fixed and displacement pulleys.
  • the chain 12 is adapted by specifically constructing the tab pattern asymmetrically. A more even contact pattern in the chain 12 can thereby be achieved.
  • FIGS. 3 and 4 now show link sequences 26 of link chains 12 in which the arrangement of the links 18 in the respective link sequence 26 is point-symmetrical (FIG. 3) or axisymmetric (FIG. 4) with respect to a central axis transverse to the main axis 28.
  • the tab sequence 26 also has eighteen tabs 18 with the numbering # 1 to # 18 in three tab rows P 1, P2, P3, so that each of the three tab rows P1, P2, P3 thus has six tabs 18.
  • the tabs 18 # 3, # 4, # 9, # 11, # 14 and # 17 are in tab row P1.
  • In the row of tabs P3 there are tabs 18 # 2, # 5, # 8, # 10, # 15 and # 16.
  • the tab sequence 26 again has eighteen tabs 18 with the numbering # 1 to # 18 in three tab rows P 1, P2, P3, so that each of the three tab rows P1, P2, P3 thus has six tabs 18.
  • Tabs P1 are tabs 18 # 2, # 5, # 8, # 11, # 14 and # 17.
  • the tabs 18 # 1, # 6, # 7, # 12, # 13 and # 18 are in the row of tabs P2.
  • the tabs 18 # 3, # 4, # 9, # 10, # 15 and # are in the row of tabs P3. 16.

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Transmissions By Endless Flexible Members (AREA)

Abstract

L'invention concerne un lien souple (10) pour une transmission de véhicule automobile réglable en particulier en continu. Le lien souple comprend une chaîne articulée (12) qui comporte un agencement (14) de pièces d'appui (16) orientées transversalement au sens de défilement du lien souple (10) et de plaques (18) disposées parallèlement au sens de défilement, les pièces d'appui (16) venant en prise dans des ouvertures (20) des plaques (18) et formant des articulations (24) au moyen desquelles les plaques (18) sont reliées de manière articulée, les plaques (18) pouvant être groupées en successions (26) de plaques (18) se suivant directement et chacune des successions de plaques (26) s'étendant autour d'un axe principal (28) de cette succession de plaques s'étendant perpendiculairement au sens de défilement (22), d'un flanc (30, 32) à l'autre de la chaîne articulée (12), et les plaques (18) de chacune des successions de plaques (26) étant disposées les unes derrière les autres dans respectivement deux ou trois rangées de plaques (P1, P2, P3) immédiatement adjacentes s'étendant parallèlement à l'axe principal (28) respectif de la succession de plaques (26). Selon l'invention, l'agencement des plaques (18) dans la succession de plaques (26) respective est asymétrique par rapport aux exigences d'une symétrie ponctuelle et aux exigences d'une symétrie axiale. L'invention concerne en outre une transmission réglable en continu pour un véhicule automobile, comprenant une première paire de poulies coniques, une deuxième paire de poulies coniques et un lien souple (10) de ce type, lequel est disposé dans le flux de couple entre la première paire de poulies coniques et la deuxième paire de poulies coniques.
PCT/DE2019/100746 2018-09-04 2019-08-20 Lien souple et transmission à variation continue dotée de celui-ci WO2020048562A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102018121505.3A DE102018121505A1 (de) 2018-09-04 2018-09-04 Umschlingungsmittel und CVT-Getriebe mit selbigem
DE102018121505.3 2018-09-04

Publications (1)

Publication Number Publication Date
WO2020048562A1 true WO2020048562A1 (fr) 2020-03-12

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Application Number Title Priority Date Filing Date
PCT/DE2019/100746 WO2020048562A1 (fr) 2018-09-04 2019-08-20 Lien souple et transmission à variation continue dotée de celui-ci

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DE (1) DE102018121505A1 (fr)
WO (1) WO2020048562A1 (fr)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102020129928B4 (de) * 2020-11-12 2022-10-13 Schaeffler Technologies AG & Co. KG Laschenkette und Kegelscheibenumschlingungsgetriebe
DE102020129936B4 (de) * 2020-11-12 2022-10-13 Schaeffler Technologies AG & Co. KG Laschenkette und Kegelscheibenumschlingungsgetriebe
DE102020129934B4 (de) * 2020-11-12 2022-12-22 Schaeffler Technologies AG & Co. KG Laschenkette und Kegelscheibenumschlingungsgetriebe

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1126210B (de) * 1958-09-08 1962-03-22 Kurt Schroeter Keilriemenantrieb mit elastischem Keilriemen
DE3027834A1 (de) 1980-07-23 1982-02-11 P.I.V. Antrieb Werner Reimers GmbH & Co KG, 6380 Bad Homburg Laschenkette fuer stufenlos verstellbare kegelscheibengetriebe
DE19922827A1 (de) * 1998-05-20 1999-11-25 Luk Getriebe Systeme Gmbh Umschlingungsmittel
DE10036258A1 (de) * 1999-09-09 2001-03-15 Luk Lamellen & Kupplungsbau Laschenkette
WO2003052290A1 (fr) * 2001-12-14 2003-06-26 Luk Lamellen Und Kupplungsbau Beteiligungs Kg Transmission a courroie destinee notamment a la transmission d'une force entre deux paires de disques coniques de la transmission
EP1867893A2 (fr) * 2006-06-15 2007-12-19 Jtekt Corporation Chaîne de transmission de puissance et dispositif de transmission de puissance l'utilisant
DE102009023815A1 (de) * 2008-06-19 2009-12-24 Luk Lamellen Und Kupplungsbau Beteiligungs Kg Laschenkette

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1126210B (de) * 1958-09-08 1962-03-22 Kurt Schroeter Keilriemenantrieb mit elastischem Keilriemen
DE3027834A1 (de) 1980-07-23 1982-02-11 P.I.V. Antrieb Werner Reimers GmbH & Co KG, 6380 Bad Homburg Laschenkette fuer stufenlos verstellbare kegelscheibengetriebe
DE19922827A1 (de) * 1998-05-20 1999-11-25 Luk Getriebe Systeme Gmbh Umschlingungsmittel
DE10036258A1 (de) * 1999-09-09 2001-03-15 Luk Lamellen & Kupplungsbau Laschenkette
WO2003052290A1 (fr) * 2001-12-14 2003-06-26 Luk Lamellen Und Kupplungsbau Beteiligungs Kg Transmission a courroie destinee notamment a la transmission d'une force entre deux paires de disques coniques de la transmission
EP1867893A2 (fr) * 2006-06-15 2007-12-19 Jtekt Corporation Chaîne de transmission de puissance et dispositif de transmission de puissance l'utilisant
DE102009023815A1 (de) * 2008-06-19 2009-12-24 Luk Lamellen Und Kupplungsbau Beteiligungs Kg Laschenkette

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