WO2015120853A1 - Piston-cylinder assembly, in particular master cylinder of a clutch actuating system in a motor vehicle - Google Patents
Piston-cylinder assembly, in particular master cylinder of a clutch actuating system in a motor vehicle Download PDFInfo
- Publication number
- WO2015120853A1 WO2015120853A1 PCT/DE2015/200060 DE2015200060W WO2015120853A1 WO 2015120853 A1 WO2015120853 A1 WO 2015120853A1 DE 2015200060 W DE2015200060 W DE 2015200060W WO 2015120853 A1 WO2015120853 A1 WO 2015120853A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- piston
- housing
- cylinder
- seal carrier
- cylinder arrangement
- 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
- F16D25/12—Details not specific to one of the before-mentioned types
-
- 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
-
- 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
- F16D2025/081—Hydraulic devices that initiate movement of pistons in slave cylinders for actuating clutches, i.e. master cylinders
-
- 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
- Piston-cylinder arrangement in particular a master cylinder of a Kupplungsbetxi supply system in a motor vehicle
- the invention relates to a piston-cylinder arrangement, in particular a master cylinder of a clutch actuation system in a motor vehicle, having a piston which is arranged axially movable in a cylinder designed as a housing and a sensor system which is arranged on the housing and with a on or in the piston mounted sensor component is in operative connection.
- the Linearwegmesssystem comprises a sensor system, which consists of an inductive sensor unit and an electrically conductive target, which will be referred to as a sensor component hereinafter, consists.
- a Hall sensor is used as the sensor system, which includes a sensor component as a permanent magnet, which is positioned on the piston.
- the invention is therefore based on the object to provide a piston-cylinder arrangement which manages without additional parts and still delivers an accurate sensor signal.
- the object is achieved in that on the piston near the
- Sensor component is an axially extending guide web is formed, which engages in a formed on an inner wall of the housing axial guide groove.
- the guide web engages positively in the guide groove. This positive engagement prevents play between the piston and the housing and allows a plane guidance of the piston within the housing.
- a cross section of the guide groove and the guide web is round or square.
- the angular design favors the positive contact and secures the piston reliably on the housing.
- the round design aids in sliding movement of the piston within the housing.
- the guide web is arranged on an outer circumference of the piston, which extends in a direction of a pressure chamber defined by the housing.
- the guide bar is thus formed near the position where the sensor component is located on the piston. This arrangement of the guide bar prevents a change in the distance between the sensor system and the sensor component.
- the sensor component is arranged in a chamber which, starting from an end face of the piston facing the pressure chamber, axially expands in the interior thereof. Anchoring the sensor component in a chamber reliably prevents the sensor component from disengaging during movement of the piston. This is supported by the fact that the sensor component is glued in the chamber.
- an inner diameter of the housing and an outer diameter of the piston are approximately equal. A minimal distance between these two Components allow sliding axial movement of the piston, but prevent the distance between the sensor component and the sensor system from changing.
- a region of the piston which faces away from the pressure chamber, comprises a seal carrier, which is firmly connected to the housing, wherein the guide groove is extended into an inner wall of the annular seal carrier.
- the seal carrier carries two axially sealing rings, which serve to ensure that the pressure chamber is reliably sealed against the housing and against the seal carrier and no hydraulic fluid, which is located in the pressure chamber, can escape. Since the seal carrier is the extension of the housing, of course, the piston moves in this. Due to the design of the guide groove in the seal carrier is further ensured that the piston can be mounted and operated angle true to.
- the housing is welded to the seal carrier, preferably ultrasonically welded.
- the sealing ring is advantageously designed as a welding ring.
- an inner diameter of the seal carrier is greater than the inner diameter of the housing. This ensures that the piston in the sealing ring has a greater clearance than inside the housing, which is particularly advantageous in the assembly of the piston in the assembly consisting of housing and sealing ring.
- FIG. 1 is a schematic diagram of a hydraulic clutch actuation system
- FIG. 3 shows an individual representation of the components of the piston-cylinder arrangement according to FIG. 2
- FIG. 4 shows a cross section of the piston-cylinder arrangement according to FIG. 2.
- FIG. 1 shows a hydraulic clutch actuation system 1, as shown in FIG. 1
- Such a clutch actuation system 1 comprises a hydraulic actuation system in the form of a clutch master cylinder 4, which has a cylinder designed as a housing 2, in which a piston 3 is mounted axially movable.
- the piston 3 is actuated by a clutch pedal 5, which acts on a piston rod 7.
- the clutch master cylinder 4 is connected to a slave cylinder 9, which actuates a clutch 10.
- the adjustment of the position of the clutch 10 is due to the drive of the piston 3 by the clutch pedal 5.
- the clutch master cylinder 4 and the clutch 10 to the slave cylinder 9 are spatially separated in the vehicle.
- a Hall sensor system 1 1 is arranged, which faces a permanent magnet 12 which is fixed to the piston 3.
- the Hall sensor system 1 1 is connected to a control unit 6.
- the housing 2 is firmly connected to a seal carrier 13 designed as a welding ring.
- a seal carrier 13 designed as a welding ring.
- the piston 3 is mounted axially movable.
- the permanent magnet 12 is supported so as to be brought close to the Hall sensor system 12 which is externally attached to the housing 2.
- the seal carrier 13 designed as a welding ring has two sealing rings 16, 17, which seal both the housing 2 and the seal carrier 13 against the hydraulic fluid in the pressure chamber 15.
- the individual components of the piston-cylinder arrangement are shown separately in FIG.
- the piston 3 has on the magnet side on a guide web 18, which has a curved surface.
- the housing 2 and the seal carrier 13 have on their inner wall 19 each have a guide groove 20, which is also formed axially and merge into one another in the assembled state.
- the piston 3 can be mounted only in a single position, since the guide bar 18 engages in the guide groove 20 of the housing 2 and seal carrier 13.
- the piston 3 By this locking the piston 3 against Rotation relative to the housing 2 and the seal carrier 13 secured so that there is always a constant distance between the permanent magnet 12 and the Hall sensor system 1 1, which entails a constant sensor signal, which forwards the sensor system 1 1 to the control unit 6.
- FIG. 4 A cross section through the described piston-cylinder arrangement is shown in Figure 4, wherein the guide groove 18 of the piston 3, which engages in the guide groove 20 of the housing 2, once again clarified.
- the proposed solution can be used in addition to the previously described Hall sensor system with a permanent magnet for other sensor systems, such as an inductive sensor unit, which cooperates with a, attached to the piston 3 electrically conductive target.
- the piston 3 is insured against rotation, which simultaneously prevents the sensor signal of the linear displacement measuring system from being lost.
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 (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE112015000800.4T DE112015000800A5 (en) | 2014-02-14 | 2015-02-03 | Piston-cylinder arrangement, in particular a master cylinder of a clutch actuation system in a motor vehicle |
CN201580008341.6A CN105992887A (en) | 2014-02-14 | 2015-02-03 | Piston-cylinder assembly, in particular master cylinder of a clutch actuating system in a motor vehicle |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102014202691.1 | 2014-02-14 | ||
DE102014202691 | 2014-02-14 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2015120853A1 true WO2015120853A1 (en) | 2015-08-20 |
Family
ID=52596268
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/DE2015/200060 WO2015120853A1 (en) | 2014-02-14 | 2015-02-03 | Piston-cylinder assembly, in particular master cylinder of a clutch actuating system in a motor vehicle |
Country Status (3)
Country | Link |
---|---|
CN (1) | CN105992887A (en) |
DE (1) | DE112015000800A5 (en) |
WO (1) | WO2015120853A1 (en) |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102017111086A1 (en) * | 2017-05-22 | 2018-11-22 | Schaeffler Technologies AG & Co. KG | Hydraulic cylinder with magnetic position measurement, in particular clutch slave cylinder |
Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP1602544A1 (en) * | 2004-06-04 | 2005-12-07 | Zf Friedrichshafen Ag | Hydraulic master cylinder |
DE102008057107A1 (en) * | 2007-11-19 | 2009-05-20 | Luk Lamellen Und Kupplungsbau Beteiligungs Kg | Position measuring system for clutch disengaging system in motor vehicle, has fastening element comprising plugging region gripped by through-hole formed in magnet and pluggable into mounting hole |
DE102009010132A1 (en) * | 2008-03-13 | 2009-09-17 | Luk Lamellen Und Kupplungsbau Beteiligungs Kg | Hydraulic cylinder for hydraulic clutch- and brake actuating systems, has information element fixed in hollow-cylindrically formed housing of piston by positioning device, where piston is axially movable in housing |
DE102009038638A1 (en) | 2008-09-08 | 2010-04-15 | Luk Lamellen Und Kupplungsbau Beteiligungs Kg | Master cylinder for actuation of clutch of motor vehicle, has insert part possessing axial running guide groove, and mounting part fixed into recess of piston part at side that is turned away from pressure chamber |
DE102011100903A1 (en) * | 2010-06-14 | 2012-03-08 | Schaeffler Technologies Gmbh & Co. Kg | Hydraulic clutch or brake actuation system, has master cylinder, slave cylinder connected to pressure line, where information transmitter is radially movable, and is mounted on piston in radially outwardly biased manner |
Family Cites Families (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US7219495B2 (en) * | 2004-06-04 | 2007-05-22 | Zf Friedrichshafen Ag | Hydraulic cylinder |
DE102010033069A1 (en) * | 2009-08-20 | 2011-03-17 | Schaeffler Technologies Gmbh & Co. Kg | Hydraulic cylinder, particularly master cylinder for clutch releasing device in drive train of motor vehicle, has piston that is axially adjustable in cylinder housing by piston rod |
JP2012166692A (en) * | 2011-02-15 | 2012-09-06 | Honda Motor Co Ltd | Master cylinder |
-
2015
- 2015-02-03 CN CN201580008341.6A patent/CN105992887A/en active Pending
- 2015-02-03 WO PCT/DE2015/200060 patent/WO2015120853A1/en active Application Filing
- 2015-02-03 DE DE112015000800.4T patent/DE112015000800A5/en not_active Withdrawn
Patent Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP1602544A1 (en) * | 2004-06-04 | 2005-12-07 | Zf Friedrichshafen Ag | Hydraulic master cylinder |
DE102008057107A1 (en) * | 2007-11-19 | 2009-05-20 | Luk Lamellen Und Kupplungsbau Beteiligungs Kg | Position measuring system for clutch disengaging system in motor vehicle, has fastening element comprising plugging region gripped by through-hole formed in magnet and pluggable into mounting hole |
DE102009010132A1 (en) * | 2008-03-13 | 2009-09-17 | Luk Lamellen Und Kupplungsbau Beteiligungs Kg | Hydraulic cylinder for hydraulic clutch- and brake actuating systems, has information element fixed in hollow-cylindrically formed housing of piston by positioning device, where piston is axially movable in housing |
DE102009038638A1 (en) | 2008-09-08 | 2010-04-15 | Luk Lamellen Und Kupplungsbau Beteiligungs Kg | Master cylinder for actuation of clutch of motor vehicle, has insert part possessing axial running guide groove, and mounting part fixed into recess of piston part at side that is turned away from pressure chamber |
DE102011100903A1 (en) * | 2010-06-14 | 2012-03-08 | Schaeffler Technologies Gmbh & Co. Kg | Hydraulic clutch or brake actuation system, has master cylinder, slave cylinder connected to pressure line, where information transmitter is radially movable, and is mounted on piston in radially outwardly biased manner |
Also Published As
Publication number | Publication date |
---|---|
DE112015000800A5 (en) | 2016-10-27 |
CN105992887A (en) | 2016-10-05 |
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