WO2018099510A1 - Ensemble piston-cylindre, notamment pour un dispositif d'actionnement d'embrayage d'un véhicule - Google Patents

Ensemble piston-cylindre, notamment pour un dispositif d'actionnement d'embrayage d'un véhicule Download PDF

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Publication number
WO2018099510A1
WO2018099510A1 PCT/DE2017/100972 DE2017100972W WO2018099510A1 WO 2018099510 A1 WO2018099510 A1 WO 2018099510A1 DE 2017100972 W DE2017100972 W DE 2017100972W WO 2018099510 A1 WO2018099510 A1 WO 2018099510A1
Authority
WO
WIPO (PCT)
Prior art keywords
piston
housing
sensor
cylinder
release bearing
Prior art date
Application number
PCT/DE2017/100972
Other languages
German (de)
English (en)
Inventor
Philippe Wagner
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
Priority to CN201780073760.7A priority Critical patent/CN110023643B/zh
Priority to DE112017006025.7T priority patent/DE112017006025A5/de
Publication of WO2018099510A1 publication Critical patent/WO2018099510A1/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
    • F16D48/00—External control of clutches
    • F16D48/02—Control by fluid pressure
    • F16D2048/0212—Details of pistons for master or slave cylinders especially adapted for fluid control
    • 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
    • F16D2300/00—Special features for couplings or clutches
    • F16D2300/18—Sensors; Details or arrangements thereof

Definitions

  • the invention relates to a piston-cylinder arrangement, in particular for a clutch actuation device of a vehicle, consisting of a housing formed as a concentric cylinder, in which a piston is mounted axially movable, wherein the piston engages a release bearing, which actuates an actuator in which a sensor fixedly arranged on the outside of the housing is in operative connection with a sensor target connected to the movable piston.
  • a Gottausschreiber for a hydraulic clutch actuation which has a through-bore housing and a sleeve disposed therein, mounted thereon, on which a clutch operable for coupling ring piston is guided, on which a release bearing Inner ring is fastened.
  • a sensor is mounted on the housing for detecting the axial position of the annular piston, which is associated with a displaceably guided magnetic body, which is connected axially free of play with an annular bearing body attached to the release bearing inner ring for driving through the annular piston.
  • the magnetic body is displaceably guided over its displacement distance to the sensor on the housing and engages with a guide shoe in a circumferential groove of the annular body axially backlash, but radially movable.
  • the disadvantage of this solution is that much radial space is needed.
  • due to the relatively large distance between the magnetic body and a tumbling center a risk of tumbling of the magnetic body is very great.
  • a wobble angle results from the piston-housing clearance. As a result, a tumbling of the magnetic body can not be completely prevented.
  • the invention is based on the object, a piston-cylinder arrangement
  • the object is achieved in that the sensor target is attached directly to the piston. Since there is no need for additional components, such as, for example, the annular body, it is not only installation space which is used to arrange the displacement measuring device. direction is reduced, but in the first place also prevented a tumbling of the sensor target, since the sensor target participates through the direct connection to the piston only the movement of the piston. The suppressed tumbling improves accuracy of the displacement signal of the piston.
  • the piston has a recess for receiving the sensor target. By means of this recess is dispensed with additional space for the sensor target on the piston, so that the dimensions of the piston-cylinder arrangement can be maintained unchanged. The arrangement of the sensor target on the piston is thus possible with structurally different piston-cylinder arrangements.
  • the piston carrying the sensor target is guided in a pressure space defined by an outer pressure wall and a guide sleeve of the housing, and the sensor bears directly against the outer pressure wall. Since the sensor target is attached to the piston so that it faces the sensor disposed on the outer pressure wall, a reliable operative connection between the sensor target and the sensor is established, which allows a very accurate displacement measurement of the piston.
  • the senor mounted on a lead frame is covered on the outer pressure wall with a lid that is firmly fixed to the outer pressure wall.
  • the release bearing and a preload spring are disposed radially inward of the piston and the housing.
  • the preload spring absorbs in particular the release bearing drag torque.
  • the release bearing and the preload spring are disposed radially outward of the piston and the housing, the preload spring being the sensor enclosing bearing housing. This results in a particularly space-saving arrangement.
  • the anti-twist device engages the guide sleeve of the housing, as a result of which the alignment of the sensor target with the sensor is also kept constant.
  • the piston and / or the release bearing are connected to each other axially via at least one latching hook.
  • this connection can be dispensed with an anti-rotation, which reduces the construction cost of the piston-cylinder unit.
  • this is designed as an annular piston, wherein the rotation and the at least one latching hook are an integral part of the annular piston.
  • the piston is integrally formed with anti-rotation and latching hook, eliminating an adjustment of the items, which simplifies the assembly process.
  • the invention allows numerous embodiments. One of them will be explained in more detail with reference to the figures shown in the drawing.
  • FIG. 1 shows a first embodiment of the piston-cylinder according to the invention
  • FIG. 1 shows a first embodiment of the piston-cylinder arrangement according to the invention, in which a cylinder forms a housing 1.
  • the housing 1 consists of an outer pressure wall 2 and a guide sleeve 3, between which a pressure chamber 4 extends, in which an axially movable piston 5 is arranged.
  • the piston 5 is connected to an inner ring 6 of a release bearing 7, which on a not shown coupling of a vehicle during the movement of the piston 5 acts.
  • the release bearing 7 is supported by a preload spring 8.
  • a sensor target 10 is arranged, so that the sensor target 10 of the outer pressure wall 2 of the housing 1 faces.
  • the size and shape of the recess 9 are adapted to the size and shape of the sensor target 10 in such a way that the sensor target 10 inserted in the recess 9 is flush with the piston wall. A survival of the sensor target 10 is thus prevented.
  • a sensor 11 is arranged on a leadframe arrangement 12, which at the same time forms the plug connection to the external connection of the sensor 11.
  • the directly outside on the outer pressure wall 2 resting sensor 1 1 and the lead frame assembly 12 are covered with a lid 13 which is welded to the outer pressure wall 2.
  • FIG. 2 an enlargement of the piston-cylinder arrangement according to FIG. 1 is shown, from which it can be seen that the piston 5 is fastened to the inner ring 6 of the inner release bearing 7 via an axially extending latching hook 15.
  • the piston 3 has a radially outwardly directed anti-rotation lock 14, which acts on the inside of the outer pressure wall 2 and contributes to the positioning of the sensor target 10 relative to the sensor 1 1.
  • FIG 3 shows an exemplary embodiment of the piston 5 designed as an annular piston with the axially formed recess 9 for receiving the sensor target 10 and also the anti-rotation device 14 extending radially on the outer skin of the piston 5, which is formed as a knob.
  • Two locking hooks 15 extend axially to the annular piston 5.
  • the described annular piston 5 is an integral component, which has the latching hook 15, the recess 9 for the sensor target 10 and the nubs of the anti-rotation 14 as an integral part.
  • a second embodiment of the piston-cylinder arrangement according to the invention is shown, in which the release bearing 7 and the preload spring 8 are arranged on the outside of the housing 1.
  • the piston 5 is provided with an anti-rotation 16, which acts on the inner wall of the guide sleeve 3, while in this case the sensor 1 1 rests with the lead frame assembly 12 directly on the outside of the outer pressure wall 2 of the housing 1.
  • the housing 1 carrying the sensor 1 1 is surrounded on the outside by the preload spring 8, which is also in In this case, the drag torque of the release bearing 7 receives.
  • the connector output 17 formed by the lead frame arrangement 12 is arranged below the preload spring 8, the preload spring 8 being surrounded by a bellows 18.
  • the wall thickness of the outer pressure wall 2 is somewhat reduced for receiving the sensor 1 1, whereby the axial positioning of the sensor target 10 to the sensor 1 1 is improved by dispensing with a sealing ring carrier.

Landscapes

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

Abstract

L'invention concerne un ensemble piston-cylindre, notamment pour un dispositif d'actionnement d'embrayage d'un véhicule. L'ensemble est constitué d'un cylindre concentrique qui est réalisé sous la forme d'un logement (1) et dans lequel un piston (5) est monté mobile axialement. Le piston (5) agit sur une butée de débrayage (7), laquelle actionne un actionneur. Un capteur (11) monté fixe de manière extérieure sur le logement (1) est en liaison fonctionnelle avec une cible (10) de capteur reliée au piston (5) mobile. Avec un ensemble piston-cylindre, un mouvement de nutation de la cible de capteur est empêché par le fait que la cible (10) de capteur est fixée directement sur le piston (5).
PCT/DE2017/100972 2016-11-29 2017-11-15 Ensemble piston-cylindre, notamment pour un dispositif d'actionnement d'embrayage d'un véhicule WO2018099510A1 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
CN201780073760.7A CN110023643B (zh) 2016-11-29 2017-11-15 活塞缸组件、尤其用于车辆离合器操纵装置的活塞缸组件
DE112017006025.7T DE112017006025A5 (de) 2016-11-29 2017-11-15 Kolben-Zylinder-Anordnung, insbesondere für eine Kupplungsbetätigungseinrichtung eines Fahrzeuges

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102016223608.3A DE102016223608A1 (de) 2016-11-29 2016-11-29 Kolben-Zylinder-Anordnung, insbesondere für eine Kupplungsbetätigungseinrichtung eines Fahrzeuges
DE102016223608.3 2016-11-29

Publications (1)

Publication Number Publication Date
WO2018099510A1 true WO2018099510A1 (fr) 2018-06-07

Family

ID=60473245

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/DE2017/100972 WO2018099510A1 (fr) 2016-11-29 2017-11-15 Ensemble piston-cylindre, notamment pour un dispositif d'actionnement d'embrayage d'un véhicule

Country Status (3)

Country Link
CN (1) CN110023643B (fr)
DE (2) DE102016223608A1 (fr)
WO (1) WO2018099510A1 (fr)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102020119185A1 (de) 2020-07-21 2022-01-27 Knorr-Bremse Systeme für Nutzfahrzeuge GmbH Kupplungsvorrichtung für ein Schaltgetriebe eines Nutzfahrzeugs

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19652785A1 (de) * 1996-12-19 1998-06-25 Schaeffler Waelzlager Ohg Ausrückvorrichtung mit integriertem Wegsensor für eine hydraulisch betätigte Reibungskupplung
EP1898111A2 (fr) 2006-09-08 2008-03-12 FTE automotive GmbH Débrayage central pour un embrayage hydraulique
DE102012220322A1 (de) * 2012-11-08 2014-05-08 Schaeffler Technologies Gmbh & Co. Kg Ausrücksystem für eine Kupplung eines Kraftfahrzeuges
DE102014208695A1 (de) * 2013-05-10 2014-11-13 Schaeffler Technologies Gmbh & Co. Kg Sensorsystem mit integrierter Führung und Verdrehsicherung im CRS
DE102014211146A1 (de) * 2013-07-03 2015-01-08 Schaeffler Technologies Gmbh & Co. Kg Kolben-Zylinder-Anordnung, insbesondere für ein Ausrücksystem in einem Kraftfahrzeug

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4120643B4 (de) * 1991-06-22 2004-04-08 Zf Sachs Ag Reibungskupplung mit Wegsensor
DE10039242A1 (de) * 1999-08-24 2001-03-08 Luk Lamellen & Kupplungsbau Ausrücksystem
DE102008057644A1 (de) * 2007-12-03 2009-06-04 Luk Lamellen Und Kupplungsbau Beteiligungs Kg Wegmesssystem für Kupplungsausrücksysteme
DE102010046700A1 (de) * 2009-10-06 2011-05-19 Micro-Epsilon Messtechnik Gmbh & Co. Kg Sensoranordnung
DE102013213902A1 (de) * 2012-07-17 2014-05-22 Schaeffler Technologies Gmbh & Co. Kg Ausrücksystem, insbesondere für Doppelkupplungen
WO2014048427A1 (fr) * 2012-09-26 2014-04-03 Schaeffler Technologies AG & Co. KG Système de débrayage pour un embrayage d'un véhicule à moteur
CN103174770B (zh) * 2013-04-07 2016-10-05 无锡民联轴承制造有限公司 液压自调心拉式离合器分离轴承总成
EP3052828B1 (fr) * 2013-10-02 2020-11-11 Schaeffler Technologies AG & Co. KG Agencement piston-cylindre
DE102013224295B4 (de) * 2013-11-27 2021-08-12 Zf Friedrichshafen Ag Zentralausrücker für eine Kupplung

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19652785A1 (de) * 1996-12-19 1998-06-25 Schaeffler Waelzlager Ohg Ausrückvorrichtung mit integriertem Wegsensor für eine hydraulisch betätigte Reibungskupplung
EP1898111A2 (fr) 2006-09-08 2008-03-12 FTE automotive GmbH Débrayage central pour un embrayage hydraulique
DE102012220322A1 (de) * 2012-11-08 2014-05-08 Schaeffler Technologies Gmbh & Co. Kg Ausrücksystem für eine Kupplung eines Kraftfahrzeuges
DE102014208695A1 (de) * 2013-05-10 2014-11-13 Schaeffler Technologies Gmbh & Co. Kg Sensorsystem mit integrierter Führung und Verdrehsicherung im CRS
DE102014211146A1 (de) * 2013-07-03 2015-01-08 Schaeffler Technologies Gmbh & Co. Kg Kolben-Zylinder-Anordnung, insbesondere für ein Ausrücksystem in einem Kraftfahrzeug

Also Published As

Publication number Publication date
CN110023643B (zh) 2021-11-02
DE102016223608A1 (de) 2018-05-30
CN110023643A (zh) 2019-07-16
DE112017006025A5 (de) 2019-08-29

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