WO2017140305A1 - Kupplungsgeberzylinder mit einer sekundärdichtungsvariante - Google Patents
Kupplungsgeberzylinder mit einer sekundärdichtungsvariante Download PDFInfo
- Publication number
- WO2017140305A1 WO2017140305A1 PCT/DE2017/100122 DE2017100122W WO2017140305A1 WO 2017140305 A1 WO2017140305 A1 WO 2017140305A1 DE 2017100122 W DE2017100122 W DE 2017100122W WO 2017140305 A1 WO2017140305 A1 WO 2017140305A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- sleeve
- sealing
- clutch master
- space
- master cylinder
- 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.)
- Ceased
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
- F16D48/00—External control of 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
- 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 secondary cylinders for actuating clutches, i.e. primary 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
- F16D48/00—External control of clutches
- F16D48/02—Control by fluid pressure
- F16D2048/0212—Details of pistons for primary or secondary cylinders especially adapted for fluid control
Definitions
- the invention relates to a clutch master cylinder with a housing in which an axially displaceable piston delimits a pressure chamber and a trailing chamber against each other and to the outside.
- the pressure chamber is in this case connected to a pressure connection and the overflow chamber is connected to a supply container.
- Such clutch master cylinders are preferably used in hydrostatic clutch actuation systems or clutch release system of motor vehicles.
- the externally actuated by means of a clutch pedal or in the case of an automated or power-operated friction clutch by means of an actuator piston is axially displaced in the housing.
- it acts upon the pressure chamber filled with a pressure medium, so that upon displacement of the pressure medium into a line system and from there to a clutch slave cylinder, the piston of the clutch slave cylinder is displaced axially, and thereby the friction clutch is actuated.
- the clutch pedal is connected to the piston via a piston rod.
- a bellows mounted on the cylinder housing or a dirt cap or a protective element is provided, which is penetrated in each case by the piston rod.
- a scraping ring which surrounds the piston rod. The tightness of the pressure chamber (primary chamber) and the trailing chamber (secondary chamber) takes place by the piston encompassing sealing elements.
- a clutch master cylinder in that a cylinder housing is provided with a cylinder space in which an axially movable sleeve is arranged.
- a connectable with a piston rod piston is guided, which separates in the sleeve via a primary seal a primary space (pressure chamber) of a secondary chamber having, for example, an ambient pressure.
- a pressure fluid connection between the cylinder chamber and the primary space is up and steered.
- a space bounded by the sleeve and the cylinder space is sealed off via a sealing element or a secondary seal, via which the sleeve is acted upon in the direction of its closed position by a, in particular axial, closing force.
- a fluidic sealing of the clutch master cylinder via the sealing element which is also used to apply force to the sleeve, whereby a number of components is reduced. This also reduces installation costs and space requirements.
- the sealing element is held in a first axial direction on a fixable in the cylinder housing holding member or limited and limited in an opposite second axial direction of the sleeve.
- the retaining element may additionally be used, for example, as a stop for the sleeve and / or the piston.
- the sealing element can device-wise simply axially against the sleeve, in particular for sealing against the secondary space, and radially on an inner wall of the cylinder chamber, in particular for sealing to the outside, sealingly abut.
- the sealing element meets two simple device-wise Sealing functions.
- the sealing element for axial sealing and Sch.kraftbeaufschlagung the sleeve, and another sealing element for sealing the gap or a partial volume of the space relative to the caster and the primary space are provided. In this way, the sealing function can be divided between two sealing elements, whereby a flexibility is increased with respect to an embodiment of the clutch master cylinder.
- the secondary seal has an axial bias acting on the slidable sleeve within the clutch master cylinder. Furthermore, the secondary seal seals the sleeve in a radial direction with respect to an inner wall of the cylinder housing. The seal can be axially fixed by the sleeve and by an additional part or a stop.
- the sealing element sealingly abut radially on the sleeve and the inner wall of the cylinder chamber and further axially act on the sleeve end face or via a formed on the sleeve radial sleeve projection with the closing force.
- the secondary space is protected by a bellows from external influences.
- the bellows can form a, in particular mechanically connected assembly together with the sealing element.
- the secondary seal can be mounted in a simple manner during assembly of the bellows at the same time.
- the secondary seal can be integrated into the bellows.
- the assembly additionally has the retaining element, on which the bellows and the sealing element are simply supported in terms of device technology.
- the holding elements serves as a stop for the sleeve and / or for the piston.
- the sealing element may be a portion of the bellows, which is extremely simple in terms of device technology and furthermore leads to a simple assembly. It is also conceivable to provide an embodiment in which a first element part of the sealing element for sealing the intermediate space and a second element part for Sch thoroughlybeaufschlagung the sleeve are provided. This results in a simple way a functional separation on the sealing element, whereby this can be made more flexible.
- the sleeve can be provided on the second element part at least one knob.
- the first element part may have two sealing lips which extend in particular in a direction away from the retaining element.
- the first sealing lip may rest on the inner wall of the cylinder chamber and the second sealing lip on an outer wall of the sleeve.
- the second element part is formed frontally of the second sealing lip for closing force of the sleeve, or alternatively, the second element part may extend away from the sealing lips.
- the sealing element may for example be designed simply as an O-sealing ring.
- FIG. 3 is a longitudinal section of a detail of a clutch master cylinder according to a second embodiment
- FIG. 4 shows in a longitudinal section a clutch master cylinder according to a third embodiment, 5 and 6 components of the clutch master cylinder of Figure 4,
- Fig. 12 in a longitudinal section a clutch master cylinder according to another embodiment.
- a clutch master cylinder 1 which has a cylinder housing 2. This has a cylinder chamber 3, in which a sleeve 4 is guided axially movable. Radially into the cylinder chamber 3 opens a trailing port 5. The sleeve 4 defines with its outer wall 6 together with the cylinder chamber 3, a gap 7 which is connected to the trailing port 5. Within the sleeve 4, a piston 8 is arranged, which separates via a sealing element or primary seal 9 a primary space 10 or pressure chamber of a secondary chamber 1 1, is present in the ambient pressure. The piston 8 is further connected to a piston rod 12. The primary space 10 is connected via the sleeve 4 with a pressure port 13, to which a clutch slave cylinder is connectable. The cylinder chamber 3 is formed as a blind hole recess with a bottom surface 14 from which the pressure port 13 extends.
- a sealing element 15 or a secondary seal is provided, which is arranged on the front side of the sleeve 4 on a side facing away from the bottom surface 14 side.
- the annular sealing element 15 is in this case defined by a holding element 16 or stop ring, of the piston rod 12th is interspersed.
- the sealing element 15 seals on the one hand from the gap 7 and acts on the other hand, the sleeve 4 with a closing force towards the bottom surface 14 in the axial direction.
- an annular groove with a sealing ring 17 is introduced, which surrounds the pressure port 13. On the sealing ring 17, the sleeve 4 can be applied in its closed position.
- the annular sealing element 15 has seen in cross-section approximately an L-shape.
- a radially inwardly extending leg 19 is in this case arranged adjacent to an end face of the sleeve 4 and has a sleeve 4 facing and applied to this knob ring 20 which is used as an axial seal.
- a second leg 21 extends approximately in the axial direction away from the sleeve 4 and has on its outer circumferential surface also a knob ring 22 which rests against an inner circumferential surface 23 of the cylinder chamber 3 and forms a radial seal.
- the sealing element 15 thus has two static sealing surfaces, namely a radial seal with the cylinder housing 2 and an axial seal with the moving sleeve 4, wherein the axial seal additionally serves as "preload.”
- the sealing element 15 is hereby inserted into the retaining element 16, which is fastened to the cylinder housing 2 and, for example, can additionally be connected to a bellows, the stop ring 18 rests against the retaining element 16 in an opening position of the sleeve 16. If a bellows is provided, it can act as a dirt protection together with the secondary seal, which also fulfills the function the axial preload load for the sleeve 4, be combined as an assembly, which saves costs and space and is easy to install.
- annular spoiler rib is provided, which surrounds the piston rod 12.
- the holding element 27 is inserted into the cylinder housing 2 via a bayonet lock.
- a bellows 29, which is penetrated by the piston rod 12, is fastened to the holding element 27 on a side facing away from the sleeve 26.
- a stop ring 30 is fixed to the end face after the radial collar 28, via which it bears against the holding element 27 and is further guided axially in the holding element 27.
- the holding member 27 is shown. On its outer circumferential surface, four holding projections 31 which form parts of the bayonet closure with the cylinder housing extend. At one or more of the holding projections, a hook 32 is provided on a side facing away from the sleeve 26, which engages in a window or in a recess 33 of the bellows 29, see Figure 6.
- the holding element 27 and the bellows 29 are thus positively connected to each other.
- the sealing element 15 can be fastened to the holding element 27, wherein then an assembly is provided which is easy to install.
- FIG. 7 a defines a retaining element 34 on the cylinder housing 2 via a stop bracket 35, see also FIG. 7 b.
- a stop bracket 35 For insertion of the U-shaped stop bracket 35, in the cylinder housing 2 4 slots 36 to 39 provided. Into the slots 36 and 37, the U-shaped stopper bracket 35 is inserted into the cylinder housing 2 and submersed through the slots 38 and 39 within the cylinder housing 2.
- a bellows 40 is disposed within the support member 34, whereby it is encompassed by this.
- four slots 40 and 41 are also introduced, two of which are shown in Figure 7b.
- the sealing element 15 is fastened to the holding element 34.
- the bellows 40, the retaining element 34 and the sealing element 15 thus form an assembly.
- This assembly is axially inserted into the cylinder housing 2.
- the stopper bracket 35 is first passed through the slots 36, 37 of the cylinder housing 2, then passes through the slots of the bellows and the support member 34 and further immersed in the slots 38 and 39 of the cylinder housing 2, whereby the assembly firmly in the cylinder housing. 2 is fixed.
- the retaining clip 35 for example, with its end portions, the cylinder housing 2 over or engage behind, so that it is fixed.
- the stopper bracket 35 also serves as a stop for the sleeve 26, on the front side of a stop ring 42 is arranged.
- a section of a clutch master cylinder 43 is shown, in which a sealing element 44 is integrated for sealing the gap 7 and the Sch thoroughlykraftbeetzstoffung the sleeve 4 in a bellows 45 or connected thereto.
- the sealing element 44 is designed as an O-ring seal with a comparatively large diameter. The diameter is chosen so that the sealing element 44 bears radially both on the sleeve 4 and on the cylinder housing 2.
- the sealing element 44 and the bellows 45 are fastened to a retaining element 46.
- the sealing element 44 is also supported in an axial direction away from the sleeve 4. For Schretekraftbeetzstoffung the sleeve 4, this has the outer radial collar 28, wherein the sealing element 44 is disposed axially between the radial collar 28 and the support member 46.
- a bellows 47 is not fastened to a holding element 48, but directly to the cylinder housing 2.
- a sealing element 49 the closing force of the sleeve 4 and the sealing of the intermediate space 7 are functionally separated.
- a first element part has two annular sealing lips 50 and 51. These extend from a base portion 52 of the sealing element 49, which bears against the holding element 48, in a direction away from the holding element 48.
- the radial outer sealing lip 50 rests on the cylinder housing 2 and the radially inner sealing lip 51 on the sleeve 4 in each case in the radial direction , Furthermore, extending from the base portion 52 radially inwardly a second element part on which at least one nub 53 is formed, which extends in a direction away from the holding member 48 toward the sleeve 4.
- the sleeve 4 rests with its end face 4 on the knob 53 and is acted upon by this with a closing force.
- FIG. 10 shows a section of a clutch master cylinder 54 in which, in contrast to the embodiment in FIG. 9, the second element part is designed as a nub 55 on the end side of the radially inner sealing lip 51.
- the nub 55 is thus formed on that surface of the sealing lip 51, which points approximately in the axial direction.
- the nub 55 is then axially against the radial collar 28 of the sleeve 4 in order to apply this to the closing force.
- the nub 55 or Quetschnoppe is arranged directly on a sealing lip.
- the sealing elements of embodiments 9 and 10 may be dynamic seals.
- a static seal for sealing the gap 7 is shown.
- a sealing element 56 is provided, which is designed as an O-ring seal, but is not integrated into a bellows, as provided in the solution in Figure 8. Otherwise, the arrangement of the sealing element 56 and embodiment corresponding to the sealing element 44 of Figure 8.
- a bellows 57 is likewise not fastened to a holding element but to the cylinder housing 2.
- a bellows is also conceivable to provide a cap or a scraping ring as a soil protection.
- an elastic element is provided, which is, for example, a sealing element 58 or an O-ring or an O-sealing ring.
- a sealing element 59 or secondary seal is provided which is arranged on an end face of the sleeve 4 pointing away from the bellows 57.
- a follow-up connection 60 does not open in the intermediate 7, but radially seen within the sealing element 59 and thus approximately the end face of the sleeve 4 on its side facing the bellows 57.
- a sealing element 61 is provided as a Schnüffeldichtung radially inward of the overflow connection 60, which surrounds a projecting into the primary space hollow cylindrical axial projection 62 of the cylinder housing, which includes the pressure port 13 surrounds. Furthermore, the sealing element 61 bears against an inner wall of the sleeve 4.
- a clutch master cylinder with a cylinder housing, in which a sleeve is slidably disposed, with a pressure medium connection between a pressure chamber and a caster up and is zuu Kunststoffbar.
- the sleeve can be actuated via a guided in the sleeve piston, wherein the piston limits the pressure chamber.
- the piston in turn is connected to a piston rod.
- a sealing element is provided, which acts on the sleeve with an axial force.
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 |
|---|---|---|---|
| DE112017000877.8T DE112017000877A5 (de) | 2016-02-18 | 2017-02-16 | Kupplungsgeberzylinder mit einer Sekundärdichtungsvariante |
Applications Claiming Priority (4)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE102016202557 | 2016-02-18 | ||
| DE102016202557.0 | 2016-02-18 | ||
| DE102016210557 | 2016-06-14 | ||
| DE102016210557.4 | 2016-06-14 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| WO2017140305A1 true WO2017140305A1 (de) | 2017-08-24 |
Family
ID=58264322
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| PCT/DE2017/100122 Ceased WO2017140305A1 (de) | 2016-02-18 | 2017-02-16 | Kupplungsgeberzylinder mit einer sekundärdichtungsvariante |
Country Status (2)
| Country | Link |
|---|---|
| DE (1) | DE112017000877A5 (de) |
| WO (1) | WO2017140305A1 (de) |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6289790B1 (en) * | 1998-06-09 | 2001-09-18 | Valeo | Clutch hydraulic control device, in particular for motor car |
| DE102009019586A1 (de) * | 2008-05-23 | 2009-11-26 | Luk Lamellen Und Kupplungsbau Beteiligungs Kg | Geberzylinderanordnung |
-
2017
- 2017-02-16 WO PCT/DE2017/100122 patent/WO2017140305A1/de not_active Ceased
- 2017-02-16 DE DE112017000877.8T patent/DE112017000877A5/de not_active Withdrawn
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6289790B1 (en) * | 1998-06-09 | 2001-09-18 | Valeo | Clutch hydraulic control device, in particular for motor car |
| DE102009019586A1 (de) * | 2008-05-23 | 2009-11-26 | Luk Lamellen Und Kupplungsbau Beteiligungs Kg | Geberzylinderanordnung |
Also Published As
| Publication number | Publication date |
|---|---|
| DE112017000877A5 (de) | 2018-10-31 |
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