WO2014048428A1 - Nehmerzylinder - Google Patents
Nehmerzylinder Download PDFInfo
- Publication number
- WO2014048428A1 WO2014048428A1 PCT/DE2013/200172 DE2013200172W WO2014048428A1 WO 2014048428 A1 WO2014048428 A1 WO 2014048428A1 DE 2013200172 W DE2013200172 W DE 2013200172W WO 2014048428 A1 WO2014048428 A1 WO 2014048428A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- guide tube
- ring
- recesses
- slave cylinder
- cylinder according
- Prior art date
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
Definitions
- the invention relates to a slave cylinder of a release system for clutch or brake systems of a motor vehicle according to the preamble of the first claim.
- CSCs concentric slave cylinders
- CSCs Generic concentric slave cylinders
- a housing designed as an annular cylinder, which is arranged around a clutch or transmission input shaft an axially displaceable annular piston is guided, which carries a release bearing which is supported on a clutch, an energy accumulator designed as a helical compression spring surrounds the piston ,
- such a slave cylinder is known from DE 1 1 2005 000 619 T5, which comprises a plastic body which defines an annular bore in which an annular piston is slidably mounted.
- the piston is sealed to the bore by an annular seal.
- a pressure chamber is defined, in which a pressure medium is introduced.
- the pressure medium comes from a master cylinder, which can be actuated by a clutch pedal.
- the piston of the slave cylinder acts on a release bearing, by which in turn the clutch is actuated.
- the piston contacts a circlip located on the housing which limits the piston stroke.
- the retaining ring has a circular cross-section and is seated in a groove in the outer circumference of the radially inwardly located wall region of the piston, which limits the pressure chamber inwards.
- the slave cylinder pushes too far, because overheating of the clutch and consequent overfilling of the hydraulic system, the plate spring tongues of the clutch bulge in the unengaged state of the clutch from the release bearing.
- the preload spring integrated in the slave cylinder feeds the piston so that additional hydraulic fluid from the pressure chamber can enter the system through the sniffer bore and the system is damaged.
- the task is to develop a slave cylinder, which has a reliable stop for the piston stroke and a high impact force absorbs even at high temperatures and is inexpensive to produce.
- the slave cylinder is known to have a concentrically arranged around a transmission input shaft housing made of plastic with an axially movable annular piston, which is acted upon by a pressure of a pressure medium and is operatively connected to a release bearing, wherein on a guide tube of the housing, a stop is provided, the a stroke of the axially displaceable on the guide tube piston limited in the direction of the release bearing, wherein the stop is inventively formed by a ring which has distributed over the circumference radially inwardly facing projections which engage in corresponding recesses in the guide tube.
- This inventive arrangement of an inner diameter with lugs provided ring / Klipsrings on the guide tube of the plastic housing of the concentric slave cylinder allows reliable support forces beyond the work area at high temperatures and thus prevents hydraulic fluid from entering the pressure chamber into the system and the system is damaged.
- the ring is slotted circumferentially to allow its mounting over the outer diameter of the guide tube.
- the recesses in the housing-side guide tube have a bottom or are formed as passage openings in the guide tube.
- the radially inwardly directed projections which are preferably in the form of lugs, may extend through the through openings or lie within the recesses.
- the outer diameter of the guide tube is reduced. It is better, however, if the wall thickness of the guide tube from the region in which the recesses are arranged is reduced / deducted by a diameter-reduced outer diameter and / or a diameter-expanded inner diameter up to a bearing in the direction of Ausgurlager end face of the guide tube.
- This clawing effect contributes to the strength of the joint and distributes the stresses on the circumference of the pipe, not just in the bottom of the recesses.
- the radially introduced recesses in the guide tube have the same or
- the recess points in which the ring first is mounted which has the smallest circumferential length and the recesses in which engage the lugs of the ends of the ring, the largest length in the circumferential direction, wherein the circumferential lengths of the lugs correspond to the circumferential lengths of the recesses.
- Figure 1 shows the slave cylinder with the assembled ring in longitudinal section
- FIG. 2 shows the three-dimensional representation of the ring
- Figure 3 shows the three-dimensional representation of the housing.
- Figure 4 shows the end portion of the guide tube with the mounted ring on which the piston abuts at working pressure.
- Figure 5 shows the end portion of the guide tube with the assembled ring on which the piston strikes at a high pressure above the working pressure.
- the slave cylinder has, according to FIG. 1, a plastic housing 1 with a radially inner first wall area, which forms a guide tube 1 .1.
- the guide tube 1.1 has distributed over the circumference recesses 1.2.
- a ring 2 which is slotted, engages with radially inwardly facing projections 2.1 in the recesses 1.2 of the guide tube 1.1 and is thereby fixed on the guide tube 1.1 and holds high loads in the axial direction.
- the ring 2 projects beyond the outer diameter D1 .1 of the first wall portion 1 .1 by a portion a circumferentially and thus forms a stop 10 for the piston 3.
- the ring 2 was only used after the piston 3 with the piston seal 4 in the Annular space 5 of the housing 1 has been mounted, which is formed by the guide tube 1.1 and a second wall portion 1.3 of the housing 1.
- a pressure medium bore 6 In the annular space 5 opens a pressure medium bore 6, so that between the guide tube 1.1, second wall portion 1.3 and piston seal 4, a pressure chamber D is formed.
- the piston 3 acts upon pressurization of the pressure chamber D on a release bearing 7 and it is a preload spring 8 is provided.
- the pointing in the direction of the release bearing 7 end portion of the guide tube 1.1 has from the region of the recesses 1.2 towards the release bearing 7 a reduced wall thickness (see also Figs. 4 and 5), which ensures that the piston seal 4 is not damaged during assembly ,
- the outer diameter D1.1 of the guide tube 1.1 projecting area a thus forms a stop 10 for a radially inner end portion 3.1 of the piston 3, which ensures that even at high temperatures from the pressure chamber D no pressure medium can escape.
- the slotted ring 2 is shown in FIG. From this, the radially inwardly facing projections 2.1 can be seen, which extend from the inner diameter 2.2 inwards.
- FIG. 3 shows the three-dimensional representation of the housing 1 with the guide tube 1.1 and the recesses introduced therein 1.2.
- the housing 1 has the first wall portion in the form of the guide tube 1.1 and spaced therefrom a second wall portion 1 .3, between which an annular space 5 is formed, to which pressure medium can be fed via a pressure medium supply 9.
- the inner diameter 2.2 of the ring 2 engages the guide tube 1 .1 of the housing, contributes by a claw effect to the strength of the connection and distributes the stresses on the circumference of the guide tube 1.1 and not only in the bottom of the recesses 1.2.
- the inner diameter 2.2 of the ring 2, from which the radially inwardly pointing projections 2.1 extend into the recesses 1 .2 of the guide tube 1.1, the outer diameter D1.1 'of the guide tube 1.1 adapted.
- FIG. 4 shows the region of the guide tube 1.1 with the mounted in the recesses 1 .2 2 ring, which forms a stop 10 against which the piston 3 abuts at a working pressure with its face 3.1 and Figure 5 on the ring 2 with high pressure on the working pressure striking piston.
- the piston 3 thus abuts with its end face 3.1 on the stop 10 of the guide tube 1 .1, which is formed by the standing with the guide tube 1 .1 ring 2 operatively connected.
- the guide tube 1.1 has an inner diameter d 1.1 and an outer diameter D1 .1, wherein from the region of the recesses 1 .2 the inner diameter d1 .1 increased to an inner diameter d 1.1 'and the outer diameter D1.1 reduced to an outer diameter D1.1 '.
- This difference in diameter causes a tilting moment is applied to the ring 2 at very high above the working pressure loads of the slotted ring 2 by the piston 3 ( Figure 5).
- the inner diameter of the ring 2.2 sets on the reduced outer diameter D1.1 'of the guide tube 1.1 of the housing 1, contributes by a claw effect to the strength of the connection and distributes the stresses on the circumference of the tube 1 .1 and not only in the reason of Recesses 1 .2.
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Hydraulic Clutches, Magnetic Clutches, Fluid Clutches, And Fluid Joints (AREA)
Abstract
Description
Claims
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE112013004714.4T DE112013004714B4 (de) | 2012-09-26 | 2013-09-11 | Nehmerzylinder eines Ausrücksystems für Kupplungs- oder Bremssysteme |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102012217344.7 | 2012-09-26 | ||
DE102012217344 | 2012-09-26 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2014048428A1 true WO2014048428A1 (de) | 2014-04-03 |
Family
ID=49626776
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/DE2013/200172 WO2014048428A1 (de) | 2012-09-26 | 2013-09-11 | Nehmerzylinder |
Country Status (2)
Country | Link |
---|---|
DE (2) | DE112013004714B4 (de) |
WO (1) | WO2014048428A1 (de) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN106989116A (zh) * | 2015-12-10 | 2017-07-28 | 舍弗勒技术股份两合公司 | 用于摩擦离合器的操纵系统和用于组装操纵系统的方法 |
CN108119574A (zh) * | 2016-11-28 | 2018-06-05 | 舍弗勒技术股份两合公司 | 离合器分离副缸及其阻挡环、壳体 |
Families Citing this family (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102015212716A1 (de) | 2014-07-22 | 2016-01-28 | Schaeffler Technologies AG & Co. KG | Kolben-Zylinder-Einheit |
DE102015220819B4 (de) | 2014-12-05 | 2023-08-17 | Schaeffler Technologies AG & Co. KG | Kolben-Zylinder-Einheit |
CN107642560A (zh) * | 2016-07-20 | 2018-01-30 | 舍弗勒技术股份两合公司 | 离合器分离系统和离合器从动缸 |
Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE19949205A1 (de) * | 1998-10-15 | 2000-04-20 | Luk Lamellen & Kupplungsbau | Hydraulisches Ausrücksystem |
DE202006014024U1 (de) * | 2006-09-08 | 2006-11-09 | Fte Automotive Gmbh | Zentralausrücker für eine hydraulische Kupplungsbetätigung |
DE112005000619T5 (de) | 2004-04-22 | 2008-08-28 | Luk Lamellen Und Kupplungsbau Beteiligungs Kg | Konzentrische Nehmerzylinder |
DE102010032661A1 (de) * | 2009-08-20 | 2011-02-24 | Schaeffler Technologies Gmbh & Co. Kg | Ausrücksystem für eine Doppelkupplung |
DE19981349B4 (de) * | 1998-06-19 | 2011-09-29 | Valeo | Ausrückvorrichtung mit hydraulischer Betätigung mit einem Führungsrohr und Verfahren zur Herstellung eines solchen Rohrs |
-
2013
- 2013-09-11 WO PCT/DE2013/200172 patent/WO2014048428A1/de active Application Filing
- 2013-09-11 DE DE112013004714.4T patent/DE112013004714B4/de not_active Expired - Fee Related
- 2013-09-11 DE DE102013218117.5A patent/DE102013218117A1/de not_active Withdrawn
Patent Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE19981349B4 (de) * | 1998-06-19 | 2011-09-29 | Valeo | Ausrückvorrichtung mit hydraulischer Betätigung mit einem Führungsrohr und Verfahren zur Herstellung eines solchen Rohrs |
DE19949205A1 (de) * | 1998-10-15 | 2000-04-20 | Luk Lamellen & Kupplungsbau | Hydraulisches Ausrücksystem |
DE112005000619T5 (de) | 2004-04-22 | 2008-08-28 | Luk Lamellen Und Kupplungsbau Beteiligungs Kg | Konzentrische Nehmerzylinder |
DE202006014024U1 (de) * | 2006-09-08 | 2006-11-09 | Fte Automotive Gmbh | Zentralausrücker für eine hydraulische Kupplungsbetätigung |
DE102010032661A1 (de) * | 2009-08-20 | 2011-02-24 | Schaeffler Technologies Gmbh & Co. Kg | Ausrücksystem für eine Doppelkupplung |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN106989116A (zh) * | 2015-12-10 | 2017-07-28 | 舍弗勒技术股份两合公司 | 用于摩擦离合器的操纵系统和用于组装操纵系统的方法 |
CN108119574A (zh) * | 2016-11-28 | 2018-06-05 | 舍弗勒技术股份两合公司 | 离合器分离副缸及其阻挡环、壳体 |
CN108119574B (zh) * | 2016-11-28 | 2021-12-21 | 舍弗勒技术股份两合公司 | 离合器分离副缸及其阻挡环、壳体 |
Also Published As
Publication number | Publication date |
---|---|
DE112013004714B4 (de) | 2019-10-17 |
DE102013218117A1 (de) | 2014-03-27 |
DE112013004714A5 (de) | 2015-06-11 |
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