WO2008086763A1 - Cylindre récepteur - Google Patents

Cylindre récepteur Download PDF

Info

Publication number
WO2008086763A1
WO2008086763A1 PCT/DE2007/002273 DE2007002273W WO2008086763A1 WO 2008086763 A1 WO2008086763 A1 WO 2008086763A1 DE 2007002273 W DE2007002273 W DE 2007002273W WO 2008086763 A1 WO2008086763 A1 WO 2008086763A1
Authority
WO
WIPO (PCT)
Prior art keywords
sleeve
guide sleeve
collar
stop
slave cylinder
Prior art date
Application number
PCT/DE2007/002273
Other languages
German (de)
English (en)
Inventor
Mario Lombardo
Edgar Hummel
Roland Welter
Wolfgang Haas
Original Assignee
Luk Lamellen Und Kupplungsbau Beteiligungs 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
Family has litigation
First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=39232943&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=WO2008086763(A1) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by Luk Lamellen Und Kupplungsbau Beteiligungs Kg filed Critical Luk Lamellen Und Kupplungsbau Beteiligungs Kg
Priority to DE112007003205T priority Critical patent/DE112007003205A5/de
Publication of WO2008086763A1 publication Critical patent/WO2008086763A1/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
    • F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
    • F16D25/00—Fluid-actuated clutches
    • F16D25/08—Fluid-actuated clutches with fluid-actuated member not rotating with a clutching member
    • F16D25/082—Fluid-actuated clutches with fluid-actuated member not rotating with a clutching member the line of action of the fluid-actuated members co-inciding with the axis of rotation
    • F16D25/083—Actuators therefor
    • 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
    • F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
    • F16D23/00—Details of mechanically-actuated clutches not specific for one distinct type
    • F16D23/12—Mechanical clutch-actuating mechanisms arranged outside the clutch as such
    • F16D23/14—Clutch-actuating sleeves or bearings; Actuating members directly connected to clutch-actuating sleeves or bearings

Definitions

  • the invention relates to a slave cylinder in a hydraulic path for clutch actuation, which is arranged concentrically around a transmission input shaft, with a guide sleeve made of plastic, on the lateral surface up to a stop a piston axially movable to, in the form of a locking ring on the coupling end of the guide sleeve is inserted and protrudes radially beyond the cladding.
  • DE 20 380 270 U1 is known from the prior art, which has a slave cylinder arranged around a transmission input shaft with a guide sleeve made of plastic, on which a piston is arranged whose axial path in the direction of the coupling ends at a stop.
  • This stop serves on the one hand to limit the way and as a safeguard against the loss of the piston and the release bearing in the disassembled state of the clutch during transport of the slave cylinder.
  • the executed as a stop ring stop is attached to the front side of the guide sleeve by pushing or pushing in the axial direction in a provided on the end face of the guide sleeve circumferential groove. In this case, the groove is formed so that the correspondingly formed stop ring can engage in the intended undercuts.
  • DE 10 2005 045 813 A1 discloses a stop solution for a generic slave cylinder, in which the stop is formed from a securing ring. This is inserted into a provided on the coupling end of the guide sleeve, introduced into the lateral surface circumferential groove and protrudes beyond the diameter of the guide sleeve.
  • the pull-out force generated by the axial force of the piston can be distributed to the projecting beyond the lateral surface of the guide sleeve, formed by the collar of the sleeve ring surface without a shearing force acting on the lateral surface of the guide sleeve.
  • the end of the sleeve facing away from the collar is advantageously designed to form a locking collar as a collar pointing radially outwards and provided with an undercut.
  • This undercut forms in the radial direction a stop surface on the sleeve, via which a latching connection with the guide sleeve can be realized.
  • this cost-effective design of the stop requires a higher force during assembly.
  • the sleeve is provided with the outwardly directed collar with slots in the axial direction, which are distributed over the circumference , In this way, now consists of the body of the sleeve distributed over the circumference arranged latching hooks, by the elasticity thereof is increased.
  • the guide sleeve is provided at its coupling end with an inwardly directed collar whose inner diameter is smaller than the actual inner diameter of the guide sleeve. This shoulder thus produced defines in the radial direction a stop surface on the guide sleeve, which can be contacted with the stop surface produced by the undercut.
  • the stop consists of an injection-moldable material, in particular of plastic.
  • the stop made of sheet metal it is possible to keep the wall thickness of the sleeve as low as possible and to increase only the rigidity by increasing the wall thickness in the intended for connection to the guide sleeve portion of the sleeve to withstand a pull-out force above 1000 N. For this reason, the wall thickness is doubled in this area according to the invention by the end portion of the sleeve is folded inwards parallel to the lateral surface. To realize the connection, this thickened region of the sleeve surrounds the collar pulled inwards into the guide sleeve until it engages both its inner surface in the axial direction and its stop surface in the radial direction.
  • a further embodiment of the invention provides to prepare for the realization of the connection with the guide sleeve, that in order to increase the rigidity of the sleeve at the connection point in the radial direction, the wall thickness of the end portion is doubled by this is folded in the vertical direction inwards.
  • connection between the sleeve insertable into the guide sleeve and the guide sleeve is produced by the sleeve initially engages around the inner diameter of the collar of the guide sleeve with its end and then applies the doubled in the radial direction wall thickness of the projecting end of the sleeve on the stop surface of the guide sleeve ,
  • this is a stop by a plug-in sleeve on the coupling end of the guide sleeve - A - formed a covenant, wherein the collar rests against the end face of the guide sleeve and in the interior of the guide sleeve cohesively, is connected by friction welding.
  • the wall thickness of the sleeve is designed so that it tapers, starting from the collar, over at least two stages. Also, the wall thickness of the guide sleeve is stepped in the connection area at the coupling end, wherein the stages of both components are directed in opposite directions. In addition, the transition from the last stage of the wall thickness of the guide sleeve to the remaining wall thickness via a conical transition.
  • FIG. 1 shows the end region of a slave cylinder arranged concentrically about a transmission input shaft with a stop according to the invention on the plastic guide sleeve in a sectional view
  • FIG. 2 shows an embodiment of the slave cylinder shown in FIG. 1,
  • FIGS. 3a and 3b show the end region of the slave cylinder according to FIG. 1 in a sectional view with a stop according to the invention made of sheet metal, and its connection with the guide sleeve made of plastic in two process steps,
  • FIGS. 4a and 4b show the end region of the slave cylinder according to FIG. 1 in a sectional illustration with a further embodiment of the stop according to the invention made of sheet metal, and its connection with the guide sleeve made of plastic in two process steps
  • FIGS. 5a and 5b show a further embodiment of the end region of the slave cylinder according to FIG. 1 with a stop according to the invention inserted therein by means of friction welding in a sectional view.
  • FIGS. 1 to 5 show the end region of a slave cylinder 10 with a release bearing 3, which is arranged concentrically around a transmission input shaft, not shown, with a guide sleeve 2 made of plastic, on which a ring-shaped piston 1 up to a stop 5 formed as a sleeve 9 is axially movable and is sealed relative to the guide sleeve 2 by a sealing element 4 in a sectional view.
  • the same reference numerals are used for identical components.
  • the piston 1 is limited by a stop 5, which consists of a sleeve with a collar 5a and is inserted into the coupling-side end of the guide sleeve 2.
  • a stop 5 which consists of a sleeve with a collar 5a and is inserted into the coupling-side end of the guide sleeve 2.
  • the diameter of the collar 5a projects beyond the diameter of the guide sleeve 2 and abuts against it.
  • the guide sleeve 2 has in this area a directed into the cylindrical interior waist 2a, so that a paragraph is formed to the adjoining inner wall.
  • a stop surface 2a ' on the collar 2a of the guide sleeve 2 is formed in the radial direction, which serves as a further contact surface with the sleeve 5.
  • the sleeve-shaped body of the stop 5 is therefore provided with a radially outwardly pointing hook-like collar defined as a locking collar 5g, which forms an undercut 5d to the rest of the lateral surface.
  • a locking collar 5g which forms an undercut 5d to the rest of the lateral surface.
  • the rigidity of the sleeve 5 is influenced to the extent that this end portion 5e becomes more elastic, which is advantageous in assembly in that case the guide sleeve 2 is stretched less radially, since in this process the snap hooks 5 b can be pressed radially inward, so as to come past the inner diameter of the federal 2ader guide sleeve 2. Subsequently, the connection of both parts is accomplished by the snap hooks 5 b snap behind the collar 2 a, wherein they rest with their undercut 5 d on the stop surface 2 a ' .
  • Figures 3a to 4b show a stopper 5 according to the invention, which is formed from a thin-walled metal sleeve with a collar.
  • the diameter of the collar 5a of this sleeve 5 is, as in the figures already described, larger than the diameter of the guide sleeve 2.
  • the guide sleeve 2 is also provided with a directed towards the interior waistband 2a. To increase the rigidity of the sleeve 5 at the junction with the guide sleeve 2 whose wall thickness is doubled in the end region 5e either in the axial or in the radial direction.
  • FIGS. 3a and 3b show the mounting of the sleeve in the guide sleeve with simultaneous doubling of the wall thickness of the end region 5e.
  • the sleeve 5 is inserted with its doubled end portion 5e in the guide sleeve 2 until it rests with its collar 5a at the end face.
  • a forming tool 6 ⁇ is inserted into the cavity of the guide sleeve 2, which is formed so that it retracts (see Figure 3b) this reinforced end portion 5e of the sleeve 5 to the inner wall of the guide sleeve 2 and at the same time to the stop surface 2a ' presses , so that a pull-out over 1000 N standhaltende connection arises.
  • a metal sleeve is shown as a stop 5.
  • the assembly of the sleeve 5 on the guide sleeve 2 again takes place with the aid of a shaping tool 8, which is designed in this case in several parts.
  • the shaping tool 8 consists of a sleeve-shaped base body slotted in the axial direction, into which a mandrel 7 provided in the front region with a conical outer contour 7a is inserted. After the collar 5 a rests against the end face of the guide sleeve 2, this sleeve 5 is pushed further with the shaping tool 8 into the interior of the guide sleeve 2.
  • the mandrel 7 is not yet in the front, the pressure area. Since the forming tool 8 is provided in the front region with a circumferential groove 8a, which serves that the end of the sleeve 5 can be clamped in this, the end of the sleeve 5 is forcibly guided accordingly. Simultaneously with the axial movement of the shaping tool 8, the mandrel 7 is inserted into the Inner space of the guide sleeve pressed so that the ends of the forming tool 8 due to the conical lateral surface of the mandrel 7 can spread in the radial direction, wherein the end portion 5e of the sleeve 5 is pressed against the stop surface 2a 'of the collar 2a.
  • the end of the sleeve 5 is applied to the already applied to the stop surface 2a ' wall of the sleeve 5 so that it doubles in this area. Thereafter, the mandrel 7 is also pulled out of the forming tool 8, whereby the ends of the forming tool 8 contract in the radial direction to its original position and the assembly is completed.
  • the stop is made of plastic, there is the possibility of connecting it to the guide sleeve 2 by means of friction welding. From the figure 5a, the two components to be joined are visible.
  • the executed as a sleeve 9 stop in turn has a cylindrical body with an end-side radially outwardly facing collar 9a, whose diameter is greater than the diameter of the guide sleeve 2.
  • As well as the wall thickness of the cylindrical base body and the wall thickness of the guide sleeve 2 in the connecting region are prepared according to the friction welding process.
  • the wall thickness of the sleeve 9, starting from its collar 9a, tapers to its end over two stages, so that a stepped jacket portion 9b is formed, while the wall thickness of the guide sleeve at the coupling end increases from a smaller wall thickness via a conical transition 2c.
  • the sleeve 9 is inserted into the guide sleeve 2 in rotation, whereby by this rotation frictional heat between the outer surface of the sleeve 9 and the inner surface of the guide sleeve 2 is formed, whereby both components in this area are materially connected be (see Figure 5b).

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Hydraulic Clutches, Magnetic Clutches, Fluid Clutches, And Fluid Joints (AREA)

Abstract

L'invention concerne un cylindre récepteur disposé concentriquement autour d'un arbre d'entrée de boîte dans un circuit hydraulique pour l'actionnement d'un embrayage, avec une douille de guidage (2) réalisée en matière plastique sur la surface extérieure de laquelle un piston (1) peut être déplacé axialement. Afin de former une butée (5, 9) à l'extrémité côté embrayage de la douille de guidage, qui exerce en même temps la fonction d'un moyen de retenue résistant à une force d'arrachement supérieure à 1000 N, cette butée est réalisée sous forme de douille pourvue d'un collet (5a, 9a), le collet s'appliquant contre la face frontale de la douille de guidage et la douille étant assemblée positivement à la douille de guidage à l'intérieur.
PCT/DE2007/002273 2007-01-15 2007-12-17 Cylindre récepteur WO2008086763A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DE112007003205T DE112007003205A5 (de) 2007-01-15 2007-12-17 Nehmerzylinder

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102007002175.7 2007-01-15
DE102007002175 2007-01-15

Publications (1)

Publication Number Publication Date
WO2008086763A1 true WO2008086763A1 (fr) 2008-07-24

Family

ID=39232943

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/DE2007/002273 WO2008086763A1 (fr) 2007-01-15 2007-12-17 Cylindre récepteur

Country Status (2)

Country Link
DE (2) DE112007003205A5 (fr)
WO (1) WO2008086763A1 (fr)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102014215895B3 (de) * 2014-08-11 2015-04-16 Schaeffler Technologies Gmbh & Co. Kg Transportsicherung für Ein-/Ausrücksysteme
DE102014226299B3 (de) * 2014-12-17 2015-10-15 Schaeffler Technologies AG & Co. KG Nehmerzylinder mit Transportsicherung sowie Verfahren zur Fixierung eines Kolbens an einem Ausrücklager
DE102015212716A1 (de) 2014-07-22 2016-01-28 Schaeffler Technologies AG & Co. KG Kolben-Zylinder-Einheit
DE102015215046A1 (de) 2015-08-06 2017-02-09 Schaeffler Technologies AG & Co. KG Gehäuse für eine Kolben-Zylinder-Einheit
WO2018019328A1 (fr) * 2016-07-28 2018-02-01 Schaeffler Technologies AG & Co. KG Unité piston-cylindre

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2780469A1 (fr) * 1998-06-30 1999-12-31 Valeo Recepteur hydraulique, notamment d'embrayage, a tube guide solidaire d'un corps exterieur
EP1085228A1 (fr) * 1999-09-15 2001-03-21 FTE automotive GmbH Dispositif de débrayage pour actionneur d'embrayage hydraulique
DE20380270U1 (de) 2002-05-27 2005-04-21 Luk Lamellen Und Kupplungsbau Beteiligungs Kg Hydraulisches System insbesondere für Kraftfahrzeuge
DE102005045813A1 (de) 2004-10-06 2006-04-13 Luk Lamellen Und Kupplungsbau Beteiligungs Kg Befestigungselemente

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
BR9912400A (pt) 1998-07-24 2001-05-02 Luk Lamellen & Kupplungsbau Vedação para um sistema de desengate acionado hidraulicamente
FR2786836B1 (fr) 1998-12-02 2001-02-16 Valeo Recepteur hydraulique, notamment d'embrayage, essentiellement en matiere plastique
WO2000050282A1 (fr) 1999-02-26 2000-08-31 Valeo Dispositif perfectionne de commande hydraulique d'un embrayage, notamment pour vehicule automobile

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2780469A1 (fr) * 1998-06-30 1999-12-31 Valeo Recepteur hydraulique, notamment d'embrayage, a tube guide solidaire d'un corps exterieur
EP1085228A1 (fr) * 1999-09-15 2001-03-21 FTE automotive GmbH Dispositif de débrayage pour actionneur d'embrayage hydraulique
DE20380270U1 (de) 2002-05-27 2005-04-21 Luk Lamellen Und Kupplungsbau Beteiligungs Kg Hydraulisches System insbesondere für Kraftfahrzeuge
DE102005045813A1 (de) 2004-10-06 2006-04-13 Luk Lamellen Und Kupplungsbau Beteiligungs Kg Befestigungselemente

Cited By (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102015212716A1 (de) 2014-07-22 2016-01-28 Schaeffler Technologies AG & Co. KG Kolben-Zylinder-Einheit
DE102014215895B3 (de) * 2014-08-11 2015-04-16 Schaeffler Technologies Gmbh & Co. Kg Transportsicherung für Ein-/Ausrücksysteme
EP2993369A2 (fr) 2014-08-11 2016-03-09 Schaeffler Technologies GmbH & Co. KG Securisation de transport pour systeme d'embrayage/debrayage
EP2993369A3 (fr) * 2014-08-11 2016-08-17 Schaeffler Technologies GmbH & Co. KG Securisation de transport pour systeme d'embrayage/debrayage
EP2993369B1 (fr) 2014-08-11 2018-01-10 Schaeffler Technologies GmbH & Co. KG Securisation de transport pour systeme d'embrayage/debrayage
DE102014226299B3 (de) * 2014-12-17 2015-10-15 Schaeffler Technologies AG & Co. KG Nehmerzylinder mit Transportsicherung sowie Verfahren zur Fixierung eines Kolbens an einem Ausrücklager
WO2016095911A1 (fr) 2014-12-17 2016-06-23 Schaeffler Technologies AG & Co. KG Cylindre récepteur avec dispositif de fixation pour le transport
DE102015215046A1 (de) 2015-08-06 2017-02-09 Schaeffler Technologies AG & Co. KG Gehäuse für eine Kolben-Zylinder-Einheit
DE102015215046B4 (de) 2015-08-06 2023-06-07 Schaeffler Technologies AG & Co. KG Gehäuse für eine Kolben-Zylinder-Einheit
WO2018019328A1 (fr) * 2016-07-28 2018-02-01 Schaeffler Technologies AG & Co. KG Unité piston-cylindre
DE102016213904A1 (de) 2016-07-28 2018-02-01 Schaeffler Technologies AG & Co. KG Kolben-Zylinder-Einheit
DE102016213904B4 (de) 2016-07-28 2018-03-22 Schaeffler Technologies AG & Co. KG Kolben-Zylinder-Einheit

Also Published As

Publication number Publication date
DE102008057957C5 (de) 2022-07-28
DE112007003205A5 (de) 2009-09-24
DE102008057957B4 (de) 2016-10-27

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