WO2017140304A1 - Kupplungsgeberzylinder mit einer als kolben wirkenden hülse - Google Patents
Kupplungsgeberzylinder mit einer als kolben wirkenden hülse Download PDFInfo
- Publication number
- WO2017140304A1 WO2017140304A1 PCT/DE2017/100121 DE2017100121W WO2017140304A1 WO 2017140304 A1 WO2017140304 A1 WO 2017140304A1 DE 2017100121 W DE2017100121 W DE 2017100121W WO 2017140304 A1 WO2017140304 A1 WO 2017140304A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- piston
- piston rod
- master cylinder
- clutch master
- sleeve
- 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
- 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
- F16D2125/00—Components of actuators
- F16D2125/02—Fluid-pressure mechanisms
- F16D2125/04—Cylinders
Definitions
- the invention relates to a clutch master cylinder with a cylinder housing in which a connected to a piston rod piston is slidably guided.
- a trailer and a clutch slave cylinder can be connected to the cylinder housing .
- the piston bounded in the cylinder housing a pressure chamber through which he can supply pressure medium to the clutch slave cylinder in an axial displacement.
- Such clutch master cylinder are preferably used in hydrostatic Kupplungsaus Wegstageen of motor vehicles.
- the piston actuated from the outside 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 displaced axially in the cylinder housing.
- a piston of the clutch slave cylinder is displaced axially, whereby a friction clutch is actuated.
- the piston is covered by a sealing ring or a primary seal. It is known to design the piston in two parts, wherein the sealing ring is then arranged and supported between the two piston parts. Alternatively, it is conceivable to arrange the sealing ring firmly in the cylinder housing.
- connection of the piston and the piston rod takes place, for example, with a bayonet closure or an additional component which is pressed or latched into the piston and in this case can fix a piston rod head.
- a disadvantage of this solution is that the piston is designed in several parts and thus a plurality of components must be provided together with the piston rod, in particular the assembly step, in which the piston rod is connected to the piston, is complex and can not be automated. Furthermore, a high axial space is required. Furthermore, it is known from the prior art to attach a sealing ring for sealing the pressure chamber on the piston rod, wherein the sealing ring is held axially over the piston rod and a pressed-in the piston rod member. A disadvantage here is that in use of the clutch master cylinder of the sealing ring is pivoted together with the piston rod, which can lead to leakage problems.
- a clutch master cylinder in that for connecting the pressure chamber limited by the piston (primary space) with the tail a piston operable by the piston is provided and the piston has at least one in a direction away from the primary space facing snap hook, with which he the piston rod overlaps or engages and is thus fixed on this.
- the inventive solution is, inter alia, to use a clutch master cylinder or clutch master cylinder (CMC), which has a displaceable sleeve which acts as a piston. Furthermore, a centering ring is provided, which is connected to the piston rod via snap hooks. Since in this solution a moving sleeve is provided, there is a sneak game, so a connection between the caster and the primary space, not on the primary seal or the sealing element, but on the sleeve, with the sniffer game can be generally reduced. Due to the snap-hook connection, the piston is extremely easy to connect to the piston rod. The snap hook also allows some flexibility or mobility between the piston and the piston rod.
- CMC clutch master cylinder
- a centering ring is provided, which is connected to the piston rod via snap hooks. Since in this solution a moving sleeve is provided, there is a sneak game, so a connection between the caster and the primary space, not on the primary seal or the sealing element, but on the sleeve,
- the annular sealing element or a sealing ring surrounds the piston and is supported axially on the one hand on the piston and on the other hand on the piston rod.
- the sealing element can thus be supported on device-simple manner on the piston.
- the piston has a centering element or a centering ring or a piston part, via which the piston can be centered in the sleeve.
- the centering element has a radial collar or a centering section for centering and an adjoining cylinder section. This can then be encompassed by the sealing element and preferably additionally by a sliding element. From the centering, in particular from the cylinder portion, then the at least one snap hook can extend.
- the sealing element can be easily supported on the radial collar and on the slider on the piston rod.
- the centering of the piston on the one hand via the sliding element and on the other via the centering element in the sleeve.
- the piston rod is axially supported simply on the centering element and / or on the sliding ring. If a support is provided on the centering element and on the sliding element, then it is advantageous if the sliding element is of annular design in order to form a contact surface for the piston rod together with the centering element. If, on the other hand, the piston rod is supported only on the sliding element, then it may be advantageous if this is designed in the manner of a bushing and is set axially on the centering element, in particular on the cylinder section. Furthermore, the centering element may have a sleeve shape in order to limit the pressure chamber. If the piston rod is supported only on the sliding element, then it is conceivable that no lubrication or lubrication of the contact surfaces takes place, in particular if the sliding element is made of a wear-optimized material.
- the sliding element together with the centering relement or alone a joint socket or a condyle, wherein the piston rod then correspondingly has a condyle or a socket.
- At least two snap hooks extend axially starting from the centering element.
- a relative rotation about an axial axis between the piston rod and the piston can be effectively prevented, and further an improved axial connection is made possible.
- Due to the axial or vertical extent of the snap hook a pivoting of a longitudinal axis of the piston rod relative to a longitudinal axis of the piston during operation is preferably made possible during operation.
- the snap hooks are received in hook receptacles of the piston rod.
- An embodiment of the hook receptacles and / or the snap hooks are such that a pivoting of the piston rod is allowed starting from an approximately coaxial position to the piston up to 3 °. It would also be conceivable to allow a pivoting of up to 5 °.
- the snap hooks are dimensioned or configured in such a way that they permit a comparatively large, in particular one-time pivoting of the longitudinal axis of the piston rod about the longitudinal axis of the piston during assembly without damage.
- the angle in particular one-time pivoting may, for example, up to 10 °, starting from a coaxial position of the piston rod to the piston amount.
- the sliding ring has a stripping part or a particular annular scraper lip or a scraper ring.
- the sleeve has a piston rod-side end portion, which has a widened inner diameter, in particular in comparison to the rest of the sleeve.
- the sleeve has a small offset, which in particular at a maximum extension of the piston, the scraper can push the dirt at this point and the dirt can advantageously remain at this point.
- the wiping member is disposed in the end portion of the sleeve or adjacent to the end portion of the sleeve to introduce dirt into the end portion.
- FIG. 4 is a perspective view of a longitudinal section of the clutch master cylinder according to the second embodiment
- FIG. 5 is a perspective view of the clutch master cylinder of Fig. 2,
- FIG. 6 is a longitudinal section of a part of a clutch master cylinder according to a third embodiment
- Fig. 8 in a longitudinal section a part of a clutch master cylinder according to a fourth embodiment.
- a clutch master cylinder 1 is shown according to a first embodiment, which is used as an explanation of the general structure and the general operation.
- This has a cylinder housing 2, in which a cylinder chamber 3 is formed.
- the cylinder chamber 3 is formed as a blind hole with a bottom surface 5.
- a pressure channel 6 which is connected to a pressure port 7 for connecting a clutch slave cylinder.
- the piston 10 is in this case axially movably guided in the sleeve 4 and limited with its side facing the bottom surface 5 a pressure chamber 14 or primary space, which is connected to the pressure channel 6.
- the sleeve 3 is supported with its pointing away from the bottom surface 5 end portion of a sealing element 1 1, which is fixed in position in the cylinder housing 2. With the sealing element 1 1 of the sleeve 4 in the cylinder chamber 3 limited annular space is sealed to the outside and to a secondary space. With her pointing to the bottom surface 5 end portion, the sleeve 4 can rest on a sealing ring 12 which surrounds the pressure channel 6 and the recess 8 and is fixed in the cylinder housing 2. If it bears against the sealing ring 12, then a pressure medium connection between a supply connection 13, which opens radially into the cylinder space 3, and the pressure space 14 is closed. Is it spaced from the sealing ring 12, this pressure medium connection is opened.
- a clutch master cylinder 15 has a piston 16 which is slidably guided in the sleeve 4.
- the piston 16 has a sleeve-shaped piston part 17 or centering element which is connected via snap hooks 18, 19 with a piston rod 20.
- the piston part 17 has a radial collar 21, from which extends a cup-shaped or sleeve-shaped cylindrical portion 22. This is encompassed by an annular sealing element 23 and a sliding ring 24.
- the sealing element 23 is in this case arranged between the radial collar 21 and the sliding ring 24 and is thus supported axially on the piston part 17 and the sliding ring 24, which in turn is supported axially on the piston rod 20.
- the snap hooks 18 and 19 are arranged approximately at a parallel distance from each other and each have an elongated axial portion and a radially outwardly bent end hook portion. So that the snap hook 18,
- the piston rod 20 can engage behind, this has for a respective snap hook 18, 19 a respective hook receptacle 25, 26.
- the piston rod 20 has a rod portion which widens toward the piston 16 radially to a contact portion 27.
- the abutment portion 27 for engagement with the piston 16 has a direction away from the piston 16 outer surface 28, which preferably extends perpendicular to a longitudinal axis of the piston rod 20. The outer surface 28 can then from the
- Snap hooks 18, 19 are overlapped or engaged behind.
- the hook receivers 25 and 26 extend from a contact surface 29 of the piston rod 20 that can be engaged with the cylinder 16 and open in the region of the outer surface 28.
- the piston 16 and the piston rod 20 are connected to each other via a ball joint.
- the piston part 17 and the sliding ring 24 form a common to the piston rod 20 facing spherical contact surface 30, which is geometrically about a portion of a spherical surface.
- the abutment surface 29 of the piston rod 20 is configured approximately pan-shaped, wherein it also geometrically forms a portion of a spherical surface. Due to the ball joint connection, the piston 16 and the piston rod 20 are pivotable relative to each other. So that in this case no tension occurs, the hook receivers 25, 26 are wider than the snap hooks 18, 19 configured, which in the pivoting between the piston rod
- FIG. 4 the clutch master cylinder 15 of FIGS. 2 and 3 shown in a 90 ° offset longitudinal section.
- the snap hooks 18, 19 of FIG. 3 are here not apparent. It can also be seen in this section that the piston rod 20 can be slidably placed on the piston part 17 and on the sliding ring 24.
- a width B in this case is greater than a thickness D, see FIG. 3.
- the thickness D is in this case measured approximately in the radial direction of the piston 16 and the width B approximately in the tangential direction to the piston 16.
- a clutch master cylinder 31 in contrast to the embodiment of Fig. 2 no sliding ring, but a sleeve-shaped sliding member 32.
- the sliding member 32 is in this case set to the piston member 17.
- the piston rod 20 is therefore no longer on the piston member 17 with its contact surface 29, but on a contact surface 33 of the sliding member 32.
- This may preferably be formed of a wear-optimized material, for example, a lubrication or lubrication of the ball joint is no longer necessary.
- Snap hooks not shown in FIG. 6, extend from the piston part 17 through recesses of the sliding element 32 and through hook receptacles of the piston rod 20
- a centering of the piston 16 of Fig. 6 takes place on the one hand on the piston member 17 and the other via the sliding member 32.
- the radial collar 21 of the piston member 17 has an approximately cylindrical outer circumferential surface 34 which can be applied to the sleeve 4.
- the sliding element 32 also has an approximately cylindrical outer circumferential surface 35 for centering to bear against the sleeve 4. Corresponding outer circumferential surfaces are also provided in the embodiment according to FIG. 3.
- a stop 36 is shown in Fig. 6, on which the sleeve 4 and the piston rod 20 can strike with its outer surface 28. Such a stop 36 is also providable in the embodiment according to FIG. 3.
- Fig. 7 the sliding ring 24 of Fig. 3 is shown enlarged. It can be seen that this has a scraper 37. This is designed as a wiper lip 37 and extends in a direction away from the pressure chamber 14 radially outward. Furthermore, the sleeve 4 has, in its end section 38 pointing away from the bottom surface 5 from FIG. NEN widened diameter D. This is thus increased compared to the sliding area of the piston 16 in the sleeve 4. Dirt or dirt particles can thus be pushed by the wiper lip 37 in the widened end portion 38.
- a shoulder 39 is thus formed, are increased by acting from the piston 16 to the sleeve 4 frictional forces to improve an axial movement of the sleeve, wherein the pressure medium connection between the caster 13th and the pressure chamber 14, see Fig. 1, is closed (sniffer seal).
- the widened end portion 38 with the paragraph 39 thus also serves as a dirt depot.
- a clutch master cylinder 40 which has a piston rod 41 with a convex contact surface 42 for the ball joint connection with a piston 46 in contrast to the previous embodiments.
- a common bearing surface 43 of a piston member 44 and an annular sliding member 45 is configured concave and adapted to the contact surface 42 of the piston rod 41.
- a clutch master cylinder with a movable sleeve for a snoop play, in which a piston for limiting a pressure chamber is slidably guided.
- the piston is connected via a snap hook with a piston rod.
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 |
|---|---|---|---|
| DE112017000874.3T DE112017000874A5 (de) | 2016-02-18 | 2017-02-16 | Kupplungsgeberzylinder mit einer als Kolben wirkenden Hülse |
Applications Claiming Priority (4)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE102016202558 | 2016-02-18 | ||
| DE102016202558.9 | 2016-02-18 | ||
| DE102016210556 | 2016-06-14 | ||
| DE102016210556.6 | 2016-06-14 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| WO2017140304A1 true WO2017140304A1 (de) | 2017-08-24 |
Family
ID=58360776
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| PCT/DE2017/100121 Ceased WO2017140304A1 (de) | 2016-02-18 | 2017-02-16 | Kupplungsgeberzylinder mit einer als kolben wirkenden hülse |
Country Status (2)
| Country | Link |
|---|---|
| DE (1) | DE112017000874A5 (de) |
| WO (1) | WO2017140304A1 (de) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102018009751A1 (de) * | 2018-12-17 | 2020-06-18 | Fte Automotive Gmbh | Hydraulikzylinder, insbesondere Geber- oder Nehmerzylinder für eine hydraulische Kupplungs- oder Bremsbetätigung für Kraftfahrzeuge |
| DE102023002731A1 (de) | 2023-07-03 | 2025-01-09 | Mercedes-Benz Group AG | Haltevorrichtung |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE19608132A1 (de) * | 1996-03-02 | 1997-05-15 | Fichtel & Sachs Ag | Zylinder, insbesondere Geberzylinder |
| DE10049913A1 (de) * | 1999-10-18 | 2001-04-19 | Luk Lamellen & Kupplungsbau | Geberzylinder |
| EP1162119A1 (de) * | 2000-06-09 | 2001-12-12 | FTE automotive GmbH | Kolben für einen Hydraulikzylinder |
| EP1602543A1 (de) * | 2004-06-04 | 2005-12-07 | ZF Friedrichshafen AG | Hydraulikzylinder |
| DE102014209026A1 (de) * | 2013-06-10 | 2014-12-11 | Schaeffler Technologies Gmbh & Co. Kg | Kolben-Zylinder-Anordnung für eine hydraulische Ausrückeinrichtung, insbesondere ein Geberzylinder für eine hydraulische Kupplungsbetätigungseinrichtung |
-
2017
- 2017-02-16 DE DE112017000874.3T patent/DE112017000874A5/de not_active Withdrawn
- 2017-02-16 WO PCT/DE2017/100121 patent/WO2017140304A1/de not_active Ceased
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE19608132A1 (de) * | 1996-03-02 | 1997-05-15 | Fichtel & Sachs Ag | Zylinder, insbesondere Geberzylinder |
| DE10049913A1 (de) * | 1999-10-18 | 2001-04-19 | Luk Lamellen & Kupplungsbau | Geberzylinder |
| EP1162119A1 (de) * | 2000-06-09 | 2001-12-12 | FTE automotive GmbH | Kolben für einen Hydraulikzylinder |
| EP1602543A1 (de) * | 2004-06-04 | 2005-12-07 | ZF Friedrichshafen AG | Hydraulikzylinder |
| DE102014209026A1 (de) * | 2013-06-10 | 2014-12-11 | Schaeffler Technologies Gmbh & Co. Kg | Kolben-Zylinder-Anordnung für eine hydraulische Ausrückeinrichtung, insbesondere ein Geberzylinder für eine hydraulische Kupplungsbetätigungseinrichtung |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102018009751A1 (de) * | 2018-12-17 | 2020-06-18 | Fte Automotive Gmbh | Hydraulikzylinder, insbesondere Geber- oder Nehmerzylinder für eine hydraulische Kupplungs- oder Bremsbetätigung für Kraftfahrzeuge |
| DE102023002731A1 (de) | 2023-07-03 | 2025-01-09 | Mercedes-Benz Group AG | Haltevorrichtung |
Also Published As
| Publication number | Publication date |
|---|---|
| DE112017000874A5 (de) | 2018-10-25 |
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