WO2013037345A1 - Cylindre récepteur pour système de débrayage hydraulique - Google Patents

Cylindre récepteur pour système de débrayage hydraulique Download PDF

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Publication number
WO2013037345A1
WO2013037345A1 PCT/DE2012/000874 DE2012000874W WO2013037345A1 WO 2013037345 A1 WO2013037345 A1 WO 2013037345A1 DE 2012000874 W DE2012000874 W DE 2012000874W WO 2013037345 A1 WO2013037345 A1 WO 2013037345A1
Authority
WO
WIPO (PCT)
Prior art keywords
seal carrier
slave cylinder
seal
sealing element
cylinder according
Prior art date
Application number
PCT/DE2012/000874
Other languages
German (de)
English (en)
Inventor
Vadim Wagner
Jochen Blauhut
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 DE112012003871.1T priority Critical patent/DE112012003871A5/de
Publication of WO2013037345A1 publication Critical patent/WO2013037345A1/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
    • F16J—PISTONS; CYLINDERS; SEALINGS
    • F16J15/00—Sealings
    • F16J15/16—Sealings between relatively-moving surfaces
    • F16J15/164—Sealings between relatively-moving surfaces the sealing action depending on movements; pressure difference, temperature or presence of leaking fluid
    • 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
    • F16J—PISTONS; CYLINDERS; SEALINGS
    • F16J15/00—Sealings
    • F16J15/16—Sealings between relatively-moving surfaces
    • F16J15/32—Sealings between relatively-moving surfaces with elastic sealings, e.g. O-rings
    • F16J15/3204—Sealings between relatively-moving surfaces with elastic sealings, e.g. O-rings with at least one lip
    • F16J15/3232—Sealings between relatively-moving surfaces with elastic sealings, e.g. O-rings with at least one lip having two or more lips
    • F16J15/3236—Sealings between relatively-moving surfaces with elastic sealings, e.g. O-rings with at least one lip having two or more lips with at least one lip for each surface, e.g. U-cup packings
    • 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
    • F16D2300/08—Details or arrangements of sealings not provided for in group F16D3/84

Definitions

  • the invention relates to a slave cylinder for a hydraulic release system of a friction clutch of vehicles, with a concentrically arranged to a transmission input shaft and a cylinder housing in a longitudinal bore of the cylinder housing radially spaced to form a circular pressure chamber provided guide sleeve, wherein in the pressure chamber, an annular piston axially displaceable is guided, on which pressure chamber side, a seal is arranged, which consists of a connected to the annular piston seal carrier and a received in a receiving opening of the seal carrier sealing element.
  • Such a release system is known for example from DE 197 24 988 A1.
  • the annular piston of the slave cylinder made of plastic, aluminum or a non-ferrous metal casting seal carrier is positively connected.
  • the elastic sealing element is received in a form-fitting manner in a receptacle of the seal carrier, whereby different stiffening elements are provided in or on the seal carrier for better fastening of the seal within the receptacle.
  • a generic hydraulic release system also known as CSC (Concentric Slave Cylinder) - described, in which the annular piston of the slave cylinder pressure chamber side is provided with a sealing element which is attached by a front side of the annular piston seal carrier is recorded.
  • the sealing element is formed by a lip seal with an outer lip and an inner lip, which are arranged radially spread apart in a V-shaped manner.
  • the outer lip comes to the inner diameter of the cylinder housing and the inner lip on the outer diameter of the guide sleeve sealingly to the plant.
  • With its one sealing foot and a sealing back comprehensive sealing body engages the sealing element to create a positive connection in a corresponding receptacle of the seal carrier.
  • the object of the invention is therefore to reduce failures or functional impairments due to poor seals in slave cylinders for hydraulic release systems and to facilitate the assembly process.
  • a slave cylinder for a hydraulic release system of a friction clutch of vehicles, with a concentrically arranged to a transmission input shaft and a cylinder housing in a longitudinal bore of the cylinder housing radially spaced to form an annular pressure chamber provided guide sleeve, wherein in the pressure chamber, an annular piston is axially displaceably guided which a sealing space is arranged on the pressure chamber side, which consists of a seal carrier connected to the annular piston and a received in a receiving opening of the seal carrier sealing element is provided according to the invention in the seal carrier at least one vent hole.
  • vent hole running in the axial or approximately axial direction is provided in a radially arranged base of the seal carrier, which is essentially U-shaped in cross-section.
  • a plurality of vent holes distributed over the circumference are arranged in the seal carrier.
  • a radially encircling groove is provided in the bottom of the seal carrier on the side facing the sealing element, which preferably has a configuration optimized with respect to a gap extrusion.
  • a further advantageous embodiment provides that further vent holes are arranged in the groove.
  • the seal carrier is made of plastic.
  • FIG. 1 shows a partial section of a slave cylinder according to the prior art.
  • Fig. 2 shows a first embodiment of a slave cylinder according to the invention in a partial section
  • Fig. 3 shows a second embodiment of a slave cylinder according to the invention in a partial section
  • Fig. 1 shows a partial section of a slave cylinder (CSC) according to the prior art.
  • the slave cylinder has a concentric with a transmission input shaft - here represented by a rotation axis A - arranged cylinder housing 1.
  • a guide sleeve 3 is provided in a longitudinal bore of the cylinder housing 1 in a longitudinal bore of the cylinder housing 1 in a longitudinal bore of the cylinder housing 1 in a longitudinal bore of the cylinder housing 1 is radially spaced to form an annular pressure chamber 2, a guide sleeve 3 is provided in a longitudinal bore of the cylinder housing 1 radially spaced to form an annular pressure chamber 2, a guide sleeve 3 is provided.
  • annular piston arranged axially displaceable in the pressure chamber 2 a (not shown here) annular piston arranged axially displaceable.
  • seal carrier 4 and a sealing element 5 can be seen in a schematic representation during the assembly process.
  • seal carrier 4 and the sealing element 5 received by the latter form a seal in the installed state, which is fastened axially by means of seal carrier 4 to the annular piston and together with the cylinder housing 1 and the guide sleeve 3 encloses the pressure chamber 2.
  • seal carrier 4 and the sealing element 5 received by the latter form a seal in the installed state, which is fastened axially by means of seal carrier 4 to the annular piston and together with the cylinder housing 1 and the guide sleeve 3 encloses the pressure chamber 2.
  • the seal carrier 4 has a cross-sectionally substantially U-shaped, annularly extending, receiving opening 4.0 for receiving the lip seal trained, annular sealing element 5.
  • the here in cross-section U-shaped receiving opening 4.0 is formed from a radial bottom 4.1 of the seal carrier 4 and two axial legs 4.2, 4.3, which comprise a part of the sealing element 5 in the mounted state of seal carrier 4 and sealing element 5.
  • the outer axial leg 4.2 is facing the cylinder housing 1 and the inner axial leg 4.3 of the guide sleeve 3.
  • the sealing element 5 made of an elastomer is preferably a lip seal with an outer lip 5.1 and an inner lip 5.2, which are arranged radially spread apart in a V-shaped manner.
  • the sealing element 5 comprises a sealing foot 5.3 and a sealing back 5.4, which constitute the part of the sealing element 5, which engages in the corresponding receiving opening 4.0 of the seal carrier 4.
  • the arrow labeled "M" in Fig. 1 indicates the mounting direction during the assembly of the sealing element 5 and the seal carrier 4. During the assembly process, between the sealing foot 5.3 of the sealing element 5 and the bottom 4.1 and a part of the legs 4.2, 4.3 of the seal carrier 4 air pockets X, which can not escape - with the adverse consequences described above.
  • the assembly process has already advanced since the air present between the sealing element 5 and the seal carrier 4 in the receiving opening 4.0 can escape.
  • the seal carrier 4, preferably made of plastic, and the sealing element 5 made of an elastomer are also located here between the cylinder housing 1 and the guide sleeve 3 in the pressure chamber 2 of the slave cylinder.
  • the seal carrier 4 has at least one ventilation bore 4.5, which is arranged in the axial direction in the bottom 4.1 of the seal carrier 4.
  • Seal carrier 4 especially between the sealing foot 5.3 of the sealing element 5 and the bottom 4.1 of the seal carrier 4, accumulating air through the vent hole 4.5 are transported.
  • a trouble-free assembly process is secured and the sealing element 5 comes to an optimal contact with the axial legs 4.2, 4.3 and the bottom 4.1 of the seal carrier 4.
  • Vent holes 4.5 may be provided.
  • Fig. 3 shows a further possible embodiment of a slave cylinder according to the invention.
  • a radially encircling groove 4.6 is introduced on the sealing element 5 facing side of the bottom 4.1 of the seal carrier 4.
  • This groove 4.6 shows optimized in terms of a column extrusion training.
  • vent holes can be provided 4.5, which relieve the seal in this area.
  • the ventilation bores 4.5 ensure sufficient removal of the air located between the sealing foot 5.3 of the sealing element 5 and the bottom 4.1 of the seal carrier 4 in the receiving opening 4.0 from the seal carrier 4.
  • the gap extrusion in this area is not a problem, since locally no critical strains can occur that affect the function of the seal.
  • annular sealing carrier 4 of substantially U-shaped cross-section has been described here, which has a likewise formed receiving opening 4.0 for receiving the annular sealing element 5 designed as a lip seal.
  • seal carrier 4 / receiving opening 4.0 and sealing element 5 are possible in which during assembly - during insertion of the sealing element 5 in the receiving opening 4.0 of the seal carrier 4 - which is to be transported away in the receiving opening 4.0 air ,

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 pour un système de débrayage hydraulique d'un embrayage à friction de véhicules, comprenant un carter de cylindre disposé de manière concentrique par rapport à un arbre d'entrée de transmission et comprenant un manchon de guidage disposé dans un alésage longitudinal du carter de cylindre à une certaine distance radiale de celui-ci pour former une chambre de pression circulaire. Un piston annulaire est guidé de manière mobile axialement dans la chambre de pression, sur lequel piston est disposé côté chambre de pression un joint d'étanchéité composé d'un support d'étanchéité relié au piston annulaire et constitué d'un élément d'étanchéité logé dans une ouverture de logement du support d'étanchéité. Selon l'invention, au moins un alésage de ventilation est disposé dans le support d'étanchéité.
PCT/DE2012/000874 2011-09-16 2012-08-31 Cylindre récepteur pour système de débrayage hydraulique WO2013037345A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DE112012003871.1T DE112012003871A5 (de) 2011-09-16 2012-08-31 Nehmerzylinder für ein hydraulisches Ausrücksystem

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102011082879 2011-09-16
DE102011082879.6 2011-09-16

Publications (1)

Publication Number Publication Date
WO2013037345A1 true WO2013037345A1 (fr) 2013-03-21

Family

ID=47075977

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/DE2012/000874 WO2013037345A1 (fr) 2011-09-16 2012-08-31 Cylindre récepteur pour système de débrayage hydraulique

Country Status (2)

Country Link
DE (2) DE102012215506A1 (fr)
WO (1) WO2013037345A1 (fr)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102014214195A1 (de) * 2014-07-22 2016-01-28 Schaeffler Technologies AG & Co. KG Zentralausrücker zur Betätigung einer Kupplung iin einem Antriebsstrang
CN106678181A (zh) * 2017-03-08 2017-05-17 菲斯达排放控制装置（苏州）有限公司 离合器密封圈
DE102018121377A1 (de) * 2018-08-31 2020-03-05 Fte Automotive Gmbh Zentralaktuator für eine hydraulische oder pneumatische Kupplungsbetätigung

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19724988A1 (de) 1997-06-13 1998-12-17 Schaeffler Waelzlager Ohg Ringkolbendichtung für ein hydraulisches Ausrücksystem
DE19949205A1 (de) * 1998-10-15 2000-04-20 Luk Lamellen & Kupplungsbau Hydraulisches Ausrücksystem
DE102008009655A1 (de) 2007-03-12 2008-09-18 Luk Lamellen Und Kupplungsbau Beteiligungs Kg Nehmerzylinder

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19724988A1 (de) 1997-06-13 1998-12-17 Schaeffler Waelzlager Ohg Ringkolbendichtung für ein hydraulisches Ausrücksystem
DE19949205A1 (de) * 1998-10-15 2000-04-20 Luk Lamellen & Kupplungsbau Hydraulisches Ausrücksystem
DE102008009655A1 (de) 2007-03-12 2008-09-18 Luk Lamellen Und Kupplungsbau Beteiligungs Kg Nehmerzylinder

Also Published As

Publication number Publication date
DE102012215506A1 (de) 2013-03-21
DE112012003871A5 (de) 2014-06-05

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