WO2020015782A1 - Cylindre récepteur pourvu d'un canal de liquide sous pression ; et dispositif de commande d'embrayage - Google Patents

Cylindre récepteur pourvu d'un canal de liquide sous pression ; et dispositif de commande d'embrayage Download PDF

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Publication number
WO2020015782A1
WO2020015782A1 PCT/DE2019/100619 DE2019100619W WO2020015782A1 WO 2020015782 A1 WO2020015782 A1 WO 2020015782A1 DE 2019100619 W DE2019100619 W DE 2019100619W WO 2020015782 A1 WO2020015782 A1 WO 2020015782A1
Authority
WO
WIPO (PCT)
Prior art keywords
housing
slave cylinder
pressure medium
housing component
medium channel
Prior art date
Application number
PCT/DE2019/100619
Other languages
German (de)
English (en)
Inventor
Michel Jacky
Julien Oster
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 DE112019003604.1T priority Critical patent/DE112019003604A5/de
Priority to CN201980048047.6A priority patent/CN112424499A/zh
Publication of WO2020015782A1 publication Critical patent/WO2020015782A1/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
    • F16D25/00—Fluid-actuated clutches
    • F16D25/10—Clutch systems with a plurality of fluid-actuated clutches
    • 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
    • F16D2250/00—Manufacturing; Assembly
    • F16D2250/0007—Casting
    • 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
    • F16D2250/00—Manufacturing; Assembly
    • F16D2250/0061—Joining
    • F16D2250/0076—Welding, brazing
    • 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
    • F16D2250/00—Manufacturing; Assembly
    • F16D2250/0084—Assembly or disassembly
    • 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
    • F16D25/087—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 the clutch being actuated by the fluid-actuated member via a diaphragm spring or an equivalent array of levers

Definitions

  • the invention relates to a slave cylinder for a clutch actuation device of a motor vehicle, such as a car, truck, bus or other commercial vehicle, with a housing which extends concentrically around a longitudinal axis and at least one piston which is displaceably received in the housing and delimits a pressure chamber with the housing, the housing being the housing is provided with at least one pressure medium channel which opens at least one pressure medium channel into a receiving space of the housing forming the pressure space.
  • the slave cylinder is thus implemented as a concentric slave cylinder (CSC / "Concentric Slave Cylinder").
  • the invention relates to a clutch actuation device with this slave cylinder and a master cylinder.
  • FIGS. 4 and 5 illustrate this state of the art. From these designs it is known to insert a pressure medium channel 7 'into a housing 3' of the slave cylinder T made of metal by means of several bores.
  • the housing has a first housing component which is made of plastic and which forms the at least one pressure medium channel directly (and preferably completely) and a second housing component which is connected to the first housing component and is made of a metal material.
  • the slave cylinder is made particularly lightweight, on the other hand, the introduction of the pressure medium channel into the first housing component is significantly simplified.
  • a first channel section of the at least one pressure medium channel is formed directly with the first housing component (without tools) in a primary molding process (of the first housing component), preferably in a casting process / molding technology (injection molding process).
  • first channel section extends in a radial direction of the longitudinal axis in the housing, it can be easily molded in a casting process.
  • the first channel section is further preferably that channel section which extends outward in the radial direction from a second channel section of the at least one pressure medium channel opening into the receiving space to a third channel section emerging from the housing. As a result, the majority of the pressure medium channel can be machined without cutting.
  • the diameter of the first channel section widens outwards in the radial direction, this can be implemented in a particularly simple manner by casting, for example using a slide. Accordingly, it is also expedient if the at least one pressure medium channel, preferably on a radial extension of the first channel section, is closed off from a radial outside of the housing by a stopper. This further facilitates the casting technology of the pressure medium channel.
  • the stopper further preferably consists of a plastic and is welded to the first housing component. This further simplifies the assembly of the slave cylinder.
  • the stability of the housing is increased if a prestressing plate reinforcing the first housing component in the region of an outlet of the pressure medium channel is attached to the housing.
  • the outlet is that (axial) opening of the pressure medium channel which exits to an environment of the housing radially outside the pressure chamber.
  • the prestressing plate is made of an aluminum or a steel plate.
  • the prestressing plate is received / pre-fixed in a form-fitting and / or non-positive manner on a receptacle of the first housing component. This further facilitates assembly.
  • the prestressing plate has a (first) through hole for receiving a fastening means, such as a screw or a rivet.
  • the first housing component is preferably provided with a further (second) through hole which is aligned / arranged in alignment with the first through hole.
  • the prestressing plate it is also advantageous if it has a metal inlay that is used to (indirectly) support the prestressing plate relative to the second housing component is arranged and dimensioned.
  • the second housing component preferably has a third through hole, which in turn is aligned with the first and second through holes, and is supported on the metal inlay on an (axial) side facing away from the prestressing plate. This results in a particularly robust design of the housing.
  • the second housing component if it is pre-fixed / attached to the first housing component (positively and / or non-positively) via a snap / snap-in connection. This further facilitates assembly.
  • the slave cylinder is designed as a so-called double slave cylinder, pressure spaces which can be controlled independently of one another being formed in the housing and a (separate) pressure medium channel opening into each receiving space of the housing forming the pressure space.
  • a double clutch can also be controlled particularly effectively by the slave cylinder.
  • the invention relates to a clutch actuation device (for a drive train of a motor vehicle) with a slave cylinder according to the invention according to at least one of the embodiments described above and a master cylinder hydraulically coupled or couplable with the slave cylinder.
  • a CSC (slave cylinder) is therefore provided with a prestressing plate on pressure oil connections (pressure medium channels).
  • the pressure oil feeds (pressure medium channels) in the CSC are integrated into the plastic part (first housing part) with a plastic pressure chamber (first housing part) and a steel base part (second housing part).
  • the two pressure oil supply lines are also provided with a pre-tensioning plate that connects both connections (pressure medium ducts / exits of the pressure medium ducts) and is screwed on in order to hold the connections in position.
  • FIG. 1 shows a longitudinal sectional illustration of a slave cylinder according to the invention in accordance with a preferred exemplary embodiment, the sectional plane being selected such that a first pressure medium channel opening into a first pressure chamber of a housing of the slave cylinder can be seen,
  • Fig. 2 is a perspective view of the slave cylinder of FIG. 1 in a
  • FIGS. 1 and 2 shows a sectional view of the slave cylinder according to FIGS. 1 and 2 in one
  • Fig. 4 is a longitudinal sectional view of a slave cylinder according to the state of the
  • Fig. 5 is a perspective view of the complete slave cylinder of the
  • a concentric slave cylinder 1 according to the invention can be seen in detail in FIG. 1 with regard to its structure.
  • the slave cylinder 1 is typically used in a clutch actuation device of a clutch system in a drive train of a motor vehicle.
  • the slave cylinder 1 acts hydraulically with a master cylinder in order to adjust a clutch of the clutch system between its engaged and disengaged position.
  • the slave cylinder 1 is designed as a hydraulic slave cylinder 1 with two partial cylinder units 22a, 22b.
  • the slave cylinder 1 is therefore implemented as a double slave cylinder.
  • the two cylinder subunits 22a, 22b are essentially of the same design.
  • a first cylinder part unit 22a is arranged (with respect to a central longitudinal axis 2) radially outside a second cylinder part unit 22b.
  • Each cylinder part unit 22a, 22b has a pressure space 4a, 4b delimited by a housing 3 and a piston 5a, 5b.
  • the housing 4b is in turn formed by a receiving space 6a, 6b of the housing 3.
  • the housing 3 like the entire slave cylinder 1, extends in a ring-shaped / concentric manner about the longitudinal axis 2 due to its design as a concentric slave cylinder 1.
  • the first cylinder part unit 22a has a first piston 5a, which is accommodated in the housing 3, namely in a first receiving space 6a of the housing 3, so as to be displaceable along a longitudinal axis 2 of the slave cylinder 1.
  • the first piston 5a typically has a seal 23 which, together with the first receiving space 6a, delimits a first pressure chamber 4a of the first cylinder subunit 22a and seals this towards a first actuating bearing 24a.
  • the first piston 5a is coupled with the first actuating bearing 24a shown here only in sections for the sake of clarity. It can also be seen in FIG. 1 that the first receiving space 6a is completely formed by a first housing component 8 of the housing 3.
  • a second receiving space 6b Radially inside the first receiving space 6a, which runs in a ring around the longitudinal axis 2, a second receiving space 6b, which also runs in a ring around the longitudinal axis 2, of the second cylinder part unit 22b is realized.
  • the second receiving space 6b is formed on the one hand, in particular with regard to a radial outer wall 25 and an end wall 26, by the first housing component 8.
  • a radial inner wall 27 of the second receiving space 6b arranged radially inside the outer wall 25 is realized by a second housing component 9.
  • the second housing component 9 forms a sleeve region 28 running along the longitudinal axis 2, towards the radial inside of which second piston 5b of the second cylinder part unit 22b delimits the second pressure chamber 4b.
  • the second piston 5b is also slidably received in the housing 3, namely in the second receiving space 6b, along the longitudinal axis 2.
  • the second piston 5b is coupled to a second actuating bearing 24b arranged radially inside the first actuating bearing 24a.
  • the second housing component 9 consists of a metal material; the second housing component 9 is formed from a metal sheet.
  • a flange region 29 of the second housing component 9 adjoining the sleeve region 28 in the axial direction (i.e. along the longitudinal axis 2) bears against the front side of the first housing component 8.
  • the first housing component 8 is thus supported on the second housing component 9 in the axial direction.
  • the second housing component 9 is fixed to the first housing component 8 via a snap connection 30.
  • the first housing component 8 is again made entirely of a plastic material.
  • the first housing component 8 is pushed onto the sleeve region 28 (radially from the outside).
  • a plurality of axial projections 31, which form the snap connection 30, are implemented on the first housing component 8 in the form of snap lugs / snap hooks (made of one piece of fabric).
  • two pressure medium channels 7a, 7b, each of which opens into one of the receiving spaces 6a, 6b of the cylinder part unit 22a, 22b, are directly and completely implemented in the first housing component 8, as can be seen by looking at FIGS.
  • a first pressure medium channel 7a opens with its radially inner end into the first receiving space 6a and exits with its radially outer end at an (first) outlet 15a in the axial direction from the housing 3 / the first housing component 8 to the surroundings ,
  • the first outlet 15a is consequently arranged radially outside of the first receiving space 6a.
  • the first pressure medium channel 7a is of course separated from the second pressure space 4b / the second receiving space 6b.
  • a second pressure medium channel 7b which opens into the second receiving space 6b, is likewise completely formed in the first housing component 8.
  • the second pressure medium channel 7b consequently extends radially outward from its radially inner end opening into the second receiving space 6b to the area opening into the second pressure space 4b in the radial direction outward to its radially outer end.
  • the second pressure medium channel 7b emerges at a (second) outlet 15b in the axial direction from the housing 3 / the first housing component 8 to the environment.
  • the second outlet 15b is consequently arranged radially outside the second receiving space 6b.
  • the second outlet 15b is arranged offset in the circumferential direction from the first outlet 15a.
  • the further construction of the two pressure medium channels 7a, 7b is described below for brevity, using the first pressure medium channel 7a for the first cylinder part unit 22a, the explanations of which are indifferent for the second pressure medium channel 7b of the second cylinder part unit 22b.
  • the main difference with regard to the design of the two pressure center channels 7a, 7b is that the second pressure medium channel 7b is longer in the radial direction compared to the first pressure medium channel 7a due to the arrangement selected radially within the second pressure chamber 4b.
  • the first pressure medium channel 7a has a first channel section 10 that runs straight in the radial direction.
  • the first channel section 10 is preferably realized using tools.
  • the first channel section 10 is formed directly in an original molding process, here an injection molding process, with which the first housing component 8 is also molded directly.
  • the first channel section 10 has an inner diameter that widens outward in the radial direction.
  • the first channel section 10 is preferably produced with a corresponding slide of a casting tool.
  • the first channel section 10 merges into a second channel section 11 which extends in the axial direction and opens into the first receiving space 6a. This second channel section 11 is also through the Original molding process made.
  • the first channel section 10 merges into a third channel section 12 which forms the first outlet 15a.
  • the third channel section 12 also extends in the axial direction, ie essentially perpendicular to the first channel section 10.
  • the third channel section 12 is also directly formed in the primary molding process of the first housing component 8.
  • a plug 14 made of plastic material is inserted and welded into the hole 33 forming the extension 32.
  • the plug 14 is made of a plastic.
  • the first channel section 10 is therefore limited to a radial outside 13 of the housing 3 by the plug 14.
  • a pretensioning plate 16 is supported on the first housing component 8 in order to reinforce the first housing component 8.
  • 3 is in principle pre-fixed in a receptacle 17 in an unsecured position of the slave cylinder 1 on the part of a transmission housing / clutch housing.
  • the prestressing plate 16 is held in a form-fitting manner in the receptacle 17.
  • the biasing plate 16 has a first through hole 18.
  • the first through hole 18 is aligned in the axial direction with a second through hole 19, which is provided directly in the first housing component 8.
  • these two first and second through holes 18, 19 are aligned with a further third through hole 21 of the second housing component 9 (in the flange region 29).
  • a fastening means (not shown for the sake of clarity) penetrates these through holes 18, 19, 21 and brings about a firm connection of the prestressing plate 16 with the two housing components 8, 9.
  • a sleeve-shaped metal inlay 20 (/ insert) surrounding the fastening means is inserted in the first housing component 8.
  • the metal inlay 20 thus typically serves to support the prestressing plate 16 relative to the second housing component 9.
  • a pressure oil supply between a clutch housing and a CSC pressure chamber 4a, 4b in a polymer housing (first housing component 8) with three channels (channel sections 10, 11, 12) which are tool-falling in the polymer Housing 8 are realized and implemented with a sealing plug 14 which is welded into the polymer housing 8.
  • the pressure oil supply (pressure medium channels 7a, 7b) is held down with a prestressing plate 16 by screwing the CSC 1 and thus prevents the CSC 1 from leaking due to the setting of the plastic or due to material fatigue.
  • the main advantages are: weight (polymer housing 8) and cost (no machining).

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 (1) pour un dispositif de commande d'embrayage d'un véhicule à moteur, qui comprend un corps (3) s'étendant de manière concentrique autour d'un axe longitudinal (2) et au moins un piston (5a, 5b) logé de manière coulissante dans le corps (3) et délimitant une chambre de pression (4a, 4b) avec le corps (3), le corps (3) étant relié à au moins un canal de liquide sous pression (7a, 7b) qui débouche dans une chambre de réception (6a, 6b) du corps (3), laquelle forme la chambre de pression (4a, 4b). Selon l'invention, le corps (3) est constitué d'un premier élément de corps (8) en matière plastique, qui forme directement au moins un canal de liquide sous pression (7a, 7b), ainsi que d'un second élément de corps (9), qui est composé d'un matériau métallique et est relié au premier élément de corps (8). L'invention concerne en outre un dispositif de commande d'embrayage comportant ledit cylindre récepteur (1).
PCT/DE2019/100619 2018-07-17 2019-07-02 Cylindre récepteur pourvu d'un canal de liquide sous pression ; et dispositif de commande d'embrayage WO2020015782A1 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
DE112019003604.1T DE112019003604A5 (de) 2018-07-17 2019-07-02 Nehmerzylinder mit Druckmittelkanal; sowie Kupplungsbetätigungseinrichtung
CN201980048047.6A CN112424499A (zh) 2018-07-17 2019-07-02 具有压力介质通道的从动缸以及离合器操作装置

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
DE102018117222.2 2018-07-17
DE102018117222 2018-07-17
DE102018120704.2 2018-08-24
DE102018120704.2A DE102018120704A1 (de) 2018-07-17 2018-08-24 Nehmerzylinder mit Druckmittelkanal; sowie Kupplungsbetätigungseinrichtung

Publications (1)

Publication Number Publication Date
WO2020015782A1 true WO2020015782A1 (fr) 2020-01-23

Family

ID=69148061

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/DE2019/100619 WO2020015782A1 (fr) 2018-07-17 2019-07-02 Cylindre récepteur pourvu d'un canal de liquide sous pression ; et dispositif de commande d'embrayage

Country Status (3)

Country Link
CN (1) CN112424499A (fr)
DE (2) DE102018120704A1 (fr)
WO (1) WO2020015782A1 (fr)

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4684003A (en) * 1983-09-30 1987-08-04 Automotive Products Plc Concentric slave cylinder for motor vehicle clutch control mechanism
DE19637106A1 (de) * 1995-09-14 1997-03-20 Valeo Auskuppelvorrichtung mit hydraulischer Steuerung für Kupplungen, insbesondere für Kraftfahrzeuge
FR2745616A1 (fr) * 1996-02-29 1997-09-05 Valeo Dispositif de maintien, notamment pour vehicule automobile
EP0836684A1 (fr) * 1996-04-02 1998-04-22 Automotive Products France S.A. Verins hydrauliques
DE102015225315A1 (de) * 2015-12-15 2017-06-22 Schaeffler Technologies AG & Co. KG Anordnung von Kupplungsglocke und Nehmerzylinder
WO2018068054A1 (fr) * 2016-10-07 2018-04-12 Eaton Corporation Différentiel à actionnement hydraulique

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102014216619A1 (de) * 2014-08-21 2016-02-25 Schaeffler Technologies AG & Co. KG Nehmerzylinder zur Betätigung einer Kupplung, Kupplung für ein Kraftfahrzeug und Kraftfahrzeug mit entsprechender Kupplung
DE112016004696A5 (de) * 2015-10-16 2018-07-05 Schaeffler Technologies AG & Co. KG Nehmerzylinder für ein hydraulisches Ausrücksystem zur Betätigung einer Reibungskupplung

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4684003A (en) * 1983-09-30 1987-08-04 Automotive Products Plc Concentric slave cylinder for motor vehicle clutch control mechanism
DE19637106A1 (de) * 1995-09-14 1997-03-20 Valeo Auskuppelvorrichtung mit hydraulischer Steuerung für Kupplungen, insbesondere für Kraftfahrzeuge
FR2745616A1 (fr) * 1996-02-29 1997-09-05 Valeo Dispositif de maintien, notamment pour vehicule automobile
EP0836684A1 (fr) * 1996-04-02 1998-04-22 Automotive Products France S.A. Verins hydrauliques
DE102015225315A1 (de) * 2015-12-15 2017-06-22 Schaeffler Technologies AG & Co. KG Anordnung von Kupplungsglocke und Nehmerzylinder
WO2018068054A1 (fr) * 2016-10-07 2018-04-12 Eaton Corporation Différentiel à actionnement hydraulique

Also Published As

Publication number Publication date
DE102018120704A1 (de) 2020-01-23
DE112019003604A5 (de) 2021-04-01
CN112424499A (zh) 2021-02-26

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