CN105992887A - 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
- CN105992887A CN105992887A CN201580008341.6A CN201580008341A CN105992887A CN 105992887 A CN105992887 A CN 105992887A CN 201580008341 A CN201580008341 A CN 201580008341A CN 105992887 A CN105992887 A CN 105992887A
- Authority
- CN
- China
- Prior art keywords
- piston
- housing
- cylinder arrangement
- cylinder
- sensor
- Prior art date
- Legal status (The legal status 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 status listed.)
- Pending
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
Abstract
The invention relates to a piston-cylinder assembly, in particular for a master cylinder of a clutch actuating system in a motor vehicle, comprising a piston which is arranged axially movably in a cylinder configured as a housing, and comprising a sensor system which is arranged on the housing and is operatively connected to a sensor component mounted in the piston. In a piston-cylinder assembly having a particularly simple anti-twist mechanism, an axially extending guide rib which engages with an axial guiding groove on the inner wall of the housing is formed on the piston, near the sensor component.
Description
Technical field
The present invention relates to the master of clutch operating system in a kind of piston-cylinder arrangement, especially motor vehicles
Moving cylinder, it has piston and sensing system, and described piston is arranged in the most movable mode
In the cylinder being configured to housing, described sensing system arrange on the housing and be fastened on institute
State the sensor ingredient on piston or in piston to be in effect connection.
Background technology
In hydraulic clutch piece-rate system in a motor vehicle is installed, linear course is used to measure system
System, for the position of the piston that detection guides in active cylinder, in order to can determine that the clutch of motor vehicles
Operation state.Described linear course is measured system and is included sensing system, and this sensing system is by electricity
Target (Target) composition of sensing type sensor unit and conduction, described target also should be referred to as sensor group
Become part.To this alternatively, it is possible to use Hall element as sensing system, this hall sensing
Device include permanent magnet as sensor ingredient, this permanent magnet is positioned on piston.By piston
Motion makes described sensor ingredient move in the magnetic field strutted by sensing system, or, from
Body struts a magnetic field, makes this magnetic field guide with passing through on described sensor side, thus changes sensor system
The sensor signal of system.
In order to ensure accurate sensor signal, it is necessary to guarantee the sensor composition portion being assemblied on piston
Divide and do not reverse.From the known a kind of active cylinder with stroke sensor of DE 10 2,009 038 638 A1,
Wherein, tightening member is arranged in the side opposite with magnet of piston anti-torsion.This fastening unit
Part has protuberance radially, and this protuberance is coupled in axially extended guiding groove, this guiding groove structure
Making in insert (Einsatzteil), this insert is connected on housing and fixes even with this housing
Connect.This anti-torsion structure is to manufacture costlyly and calibrate.
Summary of the invention
The present invention is therefore based on following task: proposing a kind of piston-cylinder arrangement, this piston-cylinder arrangement does not has
Additional parts, but still accurate sensor signal is provided.
According to present invention ground, this task is solved by following manner: on piston, near sensor group
Becoming partly to be configured with the boot bridge portion extended in the axial direction, this boot bridge portion is coupled to structure at housing
Inwall on axially directed groove in.In this structure, simple solution reliably avoid and passing
The change of the spacing between sensor ingredient and sensing system, so that sensor signal is the most steady
Fixed.Additionally, the reliable assembling of piston rod that is that achieve piston and that fasten on this piston, because
Described piston and piston rod assemble the most in one direction.Cost is reduced by the component abandoning adding
And reduce the weight of piston-cylinder arrangement.
Advantageously, it is coupled in described guiding groove described boot bridge portion positive.This shape is locked
The installation closed avoids gap between the piston and the casing, and allows piston putting down in enclosure interior
Whole guiding.
In a configuration, guiding groove and boot bridge portion cross section (rund) circularly or have angle ground
(eckig) structure.Angular configuration contributes to the contact of positive and ensure that piston is reliably
On housing.In the embodiment of circle, at the sliding motion of enclosure interior supporting piston.
In an expansion scheme, described boot bridge portion be arranged in piston, towards the pressure strutted by housing
On the outer peripheral edge that the direction of power room extends.Therefore this boot bridge portion constructs near following position: piston
On described sensor ingredient be also at this position.The layout in boot bridge portion prevents at sensor
The change of the spacing between system and sensor ingredient.
In an expansion scheme, described sensor ingredient is arranged in as in cavity of resorption, and this chamber is from piston
The side towards pressure chamber rise in the inside extending to described piston in the axial direction.Described sensor
Ingredient is anchored in chamber and reliably avoid this sensor ingredient when piston movement from its position
Put and get loose.This supports by making this sensor ingredient be bonded in described chamber.
In one embodiment, the interior diameter of described housing and the overall diameter of piston are almost same big.?
Minimum spacing between said two component allows the axially-movable that piston slides, but is that of avoiding in institute
State the change of spacing between sensor ingredient and described sensing system.
Advantageously, the region deviating from pressure chamber of piston is surrounded by seal holder, this sealing member
Support is fixing with described housing to be connected, and wherein, described guiding groove extends to ring-type seal holder
In inwall.This seal holder carries two sealing rings in the axial direction, and described sealing ring is used for making pressure
Room reliably seals relative to housing and relative to seal holder, and the liquid being in pressure chamber
Press liquid can not overflow.Because seal holder achieves the prolongation of housing, piston naturally also exists
Motion between sealing member.Additionally, ensure that by forming guiding groove in seal holder, can make
Piston conformal ground (winkeltreu) is assembled and is handled.
In a configuration, described housing welds with seal holder, is preferably ultrasonically welded.?
This, described sealing ring is configured to welding ring in an advantageous manner.
In another embodiment, the interior diameter of seal holder is more than the interior diameter of housing.The most true
Having protected piston and had the ratio gap bigger in enclosure interior in sealing ring, this is especially assembled at piston
It is favourable in the case of the construction unit being made up of housing and sealing ring.
Accompanying drawing explanation
The present invention allows multiple embodiment.One of them is detailed with reference to figure illustrated in the accompanying drawings
Ground explaination.
Accompanying drawing illustrates:
Fig. 1: show the principle diagram of hydraulic clutch steerable system,
Fig. 2: show the embodiment of the piston-cylinder arrangement according to the present invention,
Fig. 3: show the single diagram of the ingredient of the piston-cylinder arrangement according to Fig. 2,
Fig. 4: show the cross section of the piston-cylinder arrangement according to Fig. 2.
Identical feature is indicated with identical reference.
Detailed description of the invention
Figure 1 illustrates hydraulic clutch steerable system 1, as it uses in a motor vehicle.
This clutch operating system 1 includes the fluid pressure type steerable system of the form with clutch active cylinder 4,
This clutch active cylinder has the cylinder being configured to housing 2, and piston 3 is in the most movable mode
Supporting is within the tube.Piston 3 is handled by clutch pedal 5, and this clutch pedal acts on piston rod 7
On.Clutch active cylinder 4 is connected with slave cylinder 9 by fluid pressure line 8, and clutch handled by this slave cylinder
Device 10.Owing to driving piston 3 to realize the position adjustments of clutch 10 by clutch pedal 5.From
Clutch active cylinder 4 and the clutch 10 with slave cylinder 9 are arranged in motor-driven at this with being spatially separated from
Che Zhong.The outside of the cylinder as housing 2 is arranged Hall sensor systems 11, this Hall element
System is opposite with the permanent magnet 12 being fastened on piston 3.Hall sensor systems 11 and controller 6
Connect.
As can be seen from Fig. 2, housing 2 and the seal holder 13 being configured to welding ring are fixed
Connect.Piston 3 is not only in the inside of the housing 2 strutting pressure chamber 14, and in seal holder 13
Inside support in the most movable mode.On the side towards pressure chamber 14 of piston 3
Being configured with magnet bore 15, this magnet bore extends in piston 3 in the axial direction.In this magnet bore 15 such as
This supports permanent magnet 12: this makes this permanent magnet closely guide with passing through on Hall sensor systems 12 side,
This Hall sensor systems is externally fastened on housing 2.It is configured to the seal holder 13 of welding ring
Having two sealing rings 16,17, said two sealing ring is in the hydraulic fluid in pressure chamber 15 relatively
Not only to housing 2 but also seal holder 13 is sealed.
Each ingredient of piston-cylinder arrangement is separately depicted in figure 3.Piston 3 at this at magnet side
On there is boot bridge portion 18, this boot bridge portion has arcuate surface.Housing 2 and seal holder 13 exist
Being respectively provided with guiding groove 20 on its inwall 19, described guiding groove constructs the most in the axial direction, and described
Guiding groove is transitioned into one another in the assembled state.At assembling piston 3 to by housing 2 and sealing
Time in the construction unit of the assembling of part support 13 composition, piston 3 is only capable of being assemblied in a unique position
In putting, because boot bridge portion 18 is coupled in the guiding groove 20 with seal holder 13 of housing 2.
Make piston 3 ensure that not by described locking to reverse relative to housing 2 and seal holder 13 so that
All the time having constant spacing between permanent magnet 12 and Hall sensor systems 11, this spacing realizes stable
Sensor signal, 11 these sensor signals of sensing system are delivered on controller 6.
Figure 4 illustrates the cross section through described piston-cylinder arrangement, wherein, show again
The guiding groove 18 of piston 3, this guiding groove is coupled in the guiding groove 20 of housing 2.
Proposed solution is in addition to the Hall sensor systems with permanent magnet explained
Be also used for other sensing systems, such as inductance type transducer unit, this inductance type transducer unit with
The target being fastened on the conduction on piston 3 acts on jointly.
Make piston 3 guarantee not by proposed piston-cylinder arrangement to reverse, thus avoid linear simultaneously
The sensor signal of stroke measurment system is lost.
Reference numerals list
1 clutch operating system
2 housings
3 pistons
4 clutch active cylinder
5 clutch pedals
6 controllers
7 piston rods
8 fluid pressure lines
9 slave cylinders
10 clutches
11 Hall sensor systems
12 permanent magnets
13 seal holder
14 pressure chamberes
15 magnet bore
16 sealing rings
17 sealing rings
18 boot bridge portions
19 inwalls
20 guiding grooves
Claims (9)
1. piston-cylinder arrangement, the active cylinder of clutch operating system the most in a motor vehicle, described
Piston-cylinder arrangement has
-piston (3), described piston is arranged in the most movable mode and is configured to housing (2)
Cylinder in, and
-sensing system (11), described sensing system is arranged on described housing (2), and with
It is fastened on the piston (3) sensor ingredient (12) above or in piston to be in effect connection,
It is characterized in that, upper at described piston (3), close described sensor ingredient (12)
Being configured with the boot bridge portion (18) extended in the axial direction, described boot bridge portion is coupled to structure at described shell
In axially directed groove (20) on the inwall (19) of body (2).
Piston-cylinder arrangement the most according to claim 1, it is characterised in that described boot bridge portion shape
Shape is coupled in described guiding groove (20) in locking manner.
Piston-cylinder arrangement the most according to claim 1 and 2, it is characterised in that described guiding groove
(20) the cross section with described boot bridge portion (18) selects circularly or with having angle.
4. according to the piston-cylinder arrangement described in claim 1,2 or 3, it is characterised in that described in draw
Lead bridge portion (18) be arranged in described piston (3), towards the pressure chamber strutted by this housing (2)
(14) on the outer peripheral edge that direction extends.
5. according to the piston-cylinder arrangement that at least one in the claims is described, it is characterised in that
Described sensor ingredient (12) is arranged in as in cavity of resorption (15), and described chamber is from described piston (3)
The side towards described pressure chamber (14) rise in the inside extending to described piston in the axial direction.
6. according to the piston-cylinder arrangement that at least one in the claims is described, it is characterised in that
The interior diameter of described housing (2) and the overall diameter of described piston (3) are almost same big.
7. according to the piston-cylinder arrangement that at least one in the claims is described, it is characterised in that
The region deviating from described pressure chamber (14) of described piston (3) is surrounded by seal holder (13),
Described seal holder is fixing with described housing (2) to be connected, and wherein, described guiding groove (20) extends
In the inwall (19) of described seal holder (13).
Piston-cylinder arrangement the most according to claim 7, it is characterised in that described housing (2)
Weld with described seal holder (13), be preferably ultrasonically welded.
9. according to the piston-cylinder arrangement described in claim 7 or 8, it is characterised in that described sealing member
The interior diameter of support (13) is more than the interior diameter of described housing (2).
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE102014202691 | 2014-02-14 | ||
| DE102014202691.1 | 2014-02-14 | ||
| 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 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105992887A true CN105992887A (en) | 2016-10-05 |
Family
ID=52596268
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201580008341.6A Pending CN105992887A (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) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110546394A (en) * | 2017-05-22 | 2019-12-06 | 舍弗勒技术股份两合公司 | Hydraulic cylinder, in particular clutch slave cylinder, having a magnetic displacement measuring device |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20050268608A1 (en) * | 2004-06-04 | 2005-12-08 | Zf Friedrichshafen Ag | Hydraulic 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 |
| CN101532521A (en) * | 2008-03-13 | 2009-09-16 | 卢克摩擦片和离合器两合公司 | Fluid pressure cylinder with information transmitter |
| 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 |
| 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 |
| 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 |
| JP2012166692A (en) * | 2011-02-15 | 2012-09-06 | Honda Motor Co Ltd | Master cylinder |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1602544B1 (en) * | 2004-06-04 | 2011-01-05 | ZF Friedrichshafen AG | Hydraulic master cylinder |
-
2015
- 2015-02-03 DE DE112015000800.4T patent/DE112015000800A5/en not_active Withdrawn
- 2015-02-03 WO PCT/DE2015/200060 patent/WO2015120853A1/en active Application Filing
- 2015-02-03 CN CN201580008341.6A patent/CN105992887A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20050268608A1 (en) * | 2004-06-04 | 2005-12-08 | Zf Friedrichshafen Ag | Hydraulic 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 |
| CN101532521A (en) * | 2008-03-13 | 2009-09-16 | 卢克摩擦片和离合器两合公司 | Fluid pressure cylinder with information transmitter |
| 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 |
| 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 |
| 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 |
| JP2012166692A (en) * | 2011-02-15 | 2012-09-06 | Honda Motor Co Ltd | Master cylinder |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110546394A (en) * | 2017-05-22 | 2019-12-06 | 舍弗勒技术股份两合公司 | Hydraulic cylinder, in particular clutch slave cylinder, having a magnetic displacement measuring device |
Also Published As
| Publication number | Publication date |
|---|---|
| WO2015120853A1 (en) | 2015-08-20 |
| DE112015000800A5 (en) | 2016-10-27 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20161005 |