WO2024208389A1 - Reibungskupplung - Google Patents
Reibungskupplung Download PDFInfo
- Publication number
- WO2024208389A1 WO2024208389A1 PCT/DE2024/100153 DE2024100153W WO2024208389A1 WO 2024208389 A1 WO2024208389 A1 WO 2024208389A1 DE 2024100153 W DE2024100153 W DE 2024100153W WO 2024208389 A1 WO2024208389 A1 WO 2024208389A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- lever
- actuating
- friction clutch
- pressure plate
- bearing
- 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
- F16D13/00—Friction clutches
- F16D13/22—Friction clutches with axially-movable clutching members
- F16D13/38—Friction clutches with axially-movable clutching members with flat clutching surfaces, e.g. discs
- F16D13/385—Friction clutches with axially-movable clutching members with flat clutching surfaces, e.g. discs double clutches, i.e. comprising two friction disc mounted on one driven shaft
-
- 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
- F16D21/00—Systems comprising a plurality of actuated clutches
- F16D21/02—Systems comprising a plurality of actuated clutches for interconnecting three or more shafts or other transmission members in different ways
- F16D21/06—Systems comprising a plurality of actuated clutches for interconnecting three or more shafts or other transmission members in different ways at least two driving shafts or two driven shafts being concentric
-
- 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
- F16D23/00—Details of mechanically-actuated clutches not specific for one distinct type
- F16D23/12—Mechanical clutch-actuating mechanisms arranged outside the clutch as such
- F16D2023/126—Actuation by rocker lever; Rocker levers therefor
Definitions
- the present invention relates to a friction clutch, in particular for a motor vehicle, preferably a tractor clutch.
- Tractor double clutches are known in which one of the partial clutches is formed from a friction surface on a housing, a friction surface on an axially movable pressure plate and a clutch disc in between.
- the pressure plate is subjected to a contact pressure by a spring accumulator, for example a disc spring.
- the direction of the contact pressure is oriented in such a way that the clutch disc is clamped between the friction surfaces of the pressure plate and the housing for torque transmission.
- the pressure plate In order to open this partial clutch, i.e. to disengage it, the pressure plate must be moved against the force of the spring accumulator.
- actuating levers are used for this purpose.
- the actuating levers are each mounted on the housing with a swivel joint and are driven at their tips by an actuating bearing.
- the actuating levers are connected to the pressure plate by a respective pressure lever, so that the friction clutch can be disengaged via the actuating lever. If the force of the actuating bearing used for this is reduced, the force of the spring accumulator can press the pressure plate against the clutch disc. The friction clutch is thus engaged.
- the actuating levers and the actuating bearing are also moved back via the pressure levers.
- the tips of the actuating levers should lift off the actuating bearing. To do this, the actuating bearing is moved back sufficiently far so that a gap forms between the tips of the actuating levers and the actuating bearing. This should reduce wear and prevent vibrations. However, centrifugal forces or axial vibrations can cause the tips of the actuating levers to come into contact with the actuating bearing. To avoid this, it is known to preload the actuating levers with preload springs. The preload springs generate a force that moves the actuating levers towards the pressure plate. This means that the actuating levers are moved in the direction of the pressure plate by this force. the release movement.
- the preload means that the contact points of the actuating levers are permanently in contact with the pressure plate, so that no disadvantageous joint play has to be overcome during an actuation path.
- the disadvantage is that the preload spring on the actuating lever follows the entire range of motion.
- the latter is made up of a release path and a wear path that may be added. This means that during operation, a swing path can occur during the release and engagement movement and a further offset can also occur over the wear area.
- the working range of the spring must be dimensioned accordingly and is therefore considerably large. The consequences are that the spring must be designed accordingly and that a large change is recorded from the required minimum spring force to the maximum spring force. Since the force generated by the preload spring is the same as that generated by the If the force generated by the spring accumulator is counteracted, functional disadvantages occur for the friction clutch as a whole.
- the usable contact pressure of the clutch disc on the friction surfaces is reduced, which reduces the torque transmission. In addition, the contact pressure changes due to wear over the operating period.
- the object of the present invention is to provide a reliable, robust and cost-effective friction clutch.
- the aim is to prevent a disruptive reaction to the actuating lever positions, particularly in the form of a tip impact, from occurring in the event of a radial offset of the pressure plate in the housing.
- the friction clutch should be able to be designed to be compact in the axial direction.
- a friction clutch according to claim 1 with a housing, a counter-pressure plate fixed to the housing, a pressure plate that can be displaced to a limited extent in the axial direction of the friction clutch, several actuating devices, a spring accumulator and a clutch disc, wherein in an engaged state of the friction clutch the clutch disc is clamped frictionally between the counter-pressure plate and the pressure plate by a force generated by the spring accumulator, wherein in a disengaged state of the friction clutch the pressure plate is separated from the clutch disc via the actuating devices against the force generated by the spring accumulator, wherein each of the actuating devices has an actuating lever and an intermediate lever, wherein an outer end of the actuating lever in the radial direction of the friction clutch is rotatably attached to the housing via an actuating bearing, wherein the intermediate lever has a first end that is outer in the radial direction and a second end that is inner in the radial direction, wherein the intermediate lever acts on the
- the friction clutch can on the one hand prevent a tip impact and on the other hand still be designed to be compact in the axial direction.
- the position of the actuating bearing does not define the axial installation space required by the friction clutch according to the invention.
- each of the actuating devices has a preload spring, via which the actuating lever and/or the intermediate lever is/are preloaded by the preload spring engaging the actuating lever and/or the intermediate lever.
- This enables a compact and robust construction of the friction clutch.
- the preload spring engages on the one hand on the housing and on the other hand on the intermediate lever between the intermediate bearing and the second end of the intermediate lever. This enables a compact and robust design of the friction clutch.
- the preload spring is preferably a leg spring. This enables a compact and robust construction of the friction clutch.
- the actuating bearing is arranged further out in the radial direction than the intermediate bearing. This enables a compact design of the friction clutch.
- first end of the intermediate lever is arranged further outwards in the radial direction than the actuating bearing. This enables a compact design of the friction clutch.
- the first lever section of the intermediate lever engages around the actuating bearing on its side facing away from the counter-pressure plate.
- the intermediate lever further has an intermediate section which extends in the radial direction between the intermediate bearing and the first end of the intermediate lever, and which is arranged in the axial direction on the side of the actuating bearing facing the counter-pressure plate, so that the first lever section and the intermediate section define an enclosed area of the intermediate lever, in the interior of which the actuating bearing is arranged, via which the actuating lever is rotatably attached to the housing. This enables a compact design of the friction clutch even when high actuating forces are to be expected.
- a distance measured in the axial direction between the actuating bearing and the first lever section of the intermediate lever is smaller than when the friction clutch is worn. This enables a compact design of the friction clutch.
- a distance measured in the axial direction between the actuating bearing and the first lever section of the intermediate lever is preferably smaller in the disengaged state of the friction clutch than in the engaged state of the friction clutch. This enables a compact design of the friction clutch.
- the housing and the counter pressure plate are formed as one piece. This enables a compact design of the friction clutch.
- Figure 1 a first embodiment of a friction clutch with an actuating lever and an intermediate lever in the new state in the engaged state
- Figure 2 the friction clutch from Figure 1 in the disengaged state
- Figure 3 the friction clutch from Figure 1 in the state of wear in the engaged state
- Figure 4 a second embodiment of a friction clutch with an actuating lever and an intermediate lever.
- FIGs 1 to 3 show a schematic representation of a first embodiment of a friction clutch 1, which is in particular a tractor clutch, preferably a partial clutch of a tractor double clutch.
- a friction clutch 1 which is in particular a tractor clutch, preferably a partial clutch of a tractor double clutch.
- the friction clutch 1 is shown in its new state, wherein it is engaged in Figure 1 and disengaged in Figure 2.
- Figure 3 the friction clutch 1 is shown in the worn state and in the engaged state.
- the friction clutch 1 is rotatable about an axis of rotation D and has a housing 2.
- a pressure plate 4 that can be displaced to a limited extent in the axial direction A of the friction clutch 1 is arranged in the housing 2.
- a counterpressure plate 6 that is stationary in the axial direction A, i.e. fixed to the housing, is arranged in the housing 2 and can preferably be formed in one piece with the housing 2.
- the friction clutch 1 further comprises a plurality of actuating devices 5 distributed in the circumferential direction of the friction clutch 1, a spring accumulator 15 (shown schematically as an arrow in Figures 1 to 3) and a clutch disc 3.
- actuating devices 5 distributed in the circumferential direction of the friction clutch 1
- a spring accumulator 15 shown schematically as an arrow in Figures 1 to 3
- the clutch disc 3 is clamped by a force generated by the spring accumulator 15 between the counter-pressure plate 6, more precisely between a friction surface 7 of the counter-pressure plate 6, and the pressure plate 4, more precisely between a friction surface 8 of the pressure plate 4.
- the spring accumulator 15 acts in the form of coil springs or leaf springs or in the form of a disc spring directly or indirectly on the pressure plate 4, which can be displaced to a limited extent in the axial direction A.
- the friction clutch 1 When the friction clutch 1 is disengaged, the frictional connection between the clutch disc 3 and the pressure plate 4, as well as between the clutch disc 3 and the counter pressure plate 6, explained above, is eliminated.
- the pressure plate 4 is separated from the clutch disc 3 via the actuating devices 5 against the force generated by the spring accumulator 15.
- the actuating devices 5 can act on the pressure plate 4 via pressure rods 20 distributed in the circumferential direction and displaceable in the axial direction A in order to move the pressure plate 4 away from the counter-pressure plate 6 in the axial direction A.
- Each of the actuating devices 5 has an actuating lever 9 and an intermediate lever 10. Furthermore, each of the actuating devices 5 can have a preload spring (not shown in Figures 1 to 3) via which the actuating lever 9 and/or the intermediate lever 10 is/are preloaded by the preload spring engaging the actuating lever 9 and/or the intermediate lever 10 on the one hand and being supported on the housing 2 and/or the counter-pressure plate 6 on the other hand.
- the preload spring is preferably designed as a leg spring or as a helical spring.
- An outer end 11 of the actuating lever 9 in the radial direction R of the friction clutch 1 is rotatably attached to the housing 2 via an actuating bearing 16.
- An inner end 12 of the actuating lever 9 in the radial direction has an actuating dome which can be brought into contact with a release bearing of a release device which can be displaced in the axial direction A.
- the intermediate lever 10 has a first end 13 which is outer in the radial direction R and a second end 14 which is inner in the radial direction R.
- the intermediate lever 10 acts on the pressure plate 4 at the first end 13, preferably via a first lever tip which is in contact with the pressure rod 20.
- the intermediate lever 10 acts on the counterpressure plate 6 at the second end 14, preferably via a second lever tip.
- the intermediate lever 10 is rotatably attached to the actuating lever 9 via an intermediate bearing 17, which is arranged between the first end 13 and the second end 14 of the intermediate lever 10.
- a first lever section 18 of the intermediate lever 10 extends in the radial direction R between the intermediate bearing 17 and the first end 13, while a second lever section 19 of the intermediate lever 10 extends in the radial direction R between the intermediate bearing 17 and the second end 14.
- the previously mentioned preload spring preferably acts on the one hand on the housing 2 and on the other hand between the intermediate bearing 17 and the second end 14 of the intermediate lever 10, ie in the second lever section 19 on the intermediate lever 10.
- the first lever section 18 of the intermediate lever 10 is further away from the pressure plate 4, in particular from the counter-pressure plate 6, in the axial direction A than the actuating bearing 16.
- the actuating bearing 16 is arranged in the axial direction A between the pressure plate 4 or the counter-pressure plate 6 and the first lever section 18 of the intermediate lever 10.
- the first lever section 18 of the intermediate lever 10 encompasses the actuating bearing 16 on its side facing away from the counter-pressure plate 6.
- the actuating bearing 16 is arranged further outward in the radial direction R than the intermediate bearing 17. Furthermore, the first end 13 of the intermediate lever 10, more precisely the first lever tip, is arranged further outward in the radial direction R than the actuating bearing 16.
- Figure 4 shows a second embodiment of the friction clutch 1.
- the same reference numerals refer to the same features, which are not explained again in connection with Figure 4.
- the friction clutch 1 shown in Figure 4 differs from the friction clutch 1 shown in Figures 1 to 3 in that the intermediate lever 10 shown in Figure 4 not only has the first lever section 18, which extends in the radial direction R between the intermediate bearing 17 and the first end 13 which is outer in the radial direction R, and the second lever section 19, which extends in the radial direction R between the intermediate bearing 17 and the second end 14 which is inner in the radial direction R, but also has an intermediate section 22.
- the intermediate section 22 of the intermediate lever 10 also extends in the radial direction R between the intermediate bearing 17 and the first end 13 of the intermediate lever 10, which is outer in the radial direction R. While the first lever section 18 of the intermediate lever 10 is further away from the pressure plate 4, in particular from the counter-pressure plate 6, in the axial direction A than the actuating bearing 16, i.e. is arranged on the side of the actuating bearing 16 facing away from the counter-pressure plate 6, the intermediate section 22 of the intermediate lever 10 is formed in the axial direction A between the actuating bearing 16 and the pressure plate 4, in particular the counter-pressure plate 6, i.e. is formed on the side of the actuating bearing 16 facing the counter-pressure plate 6.
- first lever section 18 and the intermediate section 22 define an enclosed region 23 of the intermediate lever 10, in the interior of which the actuating bearing 16 is arranged, via which the actuating lever 9 is rotatably attached to the housing 2.
- the preceding embodiments relate to a friction clutch 1 with a housing 2, a counter-pressure plate 6 fixed to the housing, a pressure plate 4 that can be displaced to a limited extent in the axial direction A of the friction clutch 1, a plurality of actuating devices 5, a spring accumulator 15 and a clutch disc 3, wherein in an engaged state of the friction clutch 1, the clutch disc 3 is clamped frictionally between the counter-pressure plate 6 and the pressure plate 4 by a force generated by the spring accumulator 15, wherein in a disengaged state of the friction clutch 1, the pressure plate 4 is separated from the clutch disc 3 via the actuating devices 5 against the force generated by the spring accumulator 15, wherein each of the actuating devices 5 has an actuating lever 9 and an intermediate lever 10, wherein an outer end 11 of the actuating lever 9 in the radial direction R of the friction clutch 1 is rotatably attached to the housing 2 via an actuating bearing 16, wherein the intermediate lever 10 has a first end 13 which is outer in the radial direction R and
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Mechanical Operated Clutches (AREA)
Abstract
Description
Claims
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202480015159.2A CN120826542A (zh) | 2023-04-05 | 2024-02-26 | 摩擦离合器 |
Applications Claiming Priority (4)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE102023108706 | 2023-04-05 | ||
| DE102023108706.1 | 2023-04-05 | ||
| DE102023117495.9 | 2023-07-03 | ||
| DE102023117495.9A DE102023117495B4 (de) | 2023-04-05 | 2023-07-03 | Reibungskupplung |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| WO2024208389A1 true WO2024208389A1 (de) | 2024-10-10 |
Family
ID=90361642
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| PCT/DE2024/100153 Ceased WO2024208389A1 (de) | 2023-04-05 | 2024-02-26 | Reibungskupplung |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN120826542A (de) |
| WO (1) | WO2024208389A1 (de) |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2226037A5 (de) * | 1972-11-20 | 1974-11-08 | Ferodo Sa | |
| DE3142107A1 (de) | 1980-10-24 | 1982-06-09 | Valeo, 75017 Paris | "vorrichtung fuer eine kupplung" |
| DE2357860C2 (de) | 1972-11-20 | 1986-05-28 | Valeo, Paris | Kupplung |
| EP0695885A1 (de) * | 1994-08-03 | 1996-02-07 | Carraro S.P.A. | Reibkupplungseinheit |
-
2024
- 2024-02-26 WO PCT/DE2024/100153 patent/WO2024208389A1/de not_active Ceased
- 2024-02-26 CN CN202480015159.2A patent/CN120826542A/zh active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2226037A5 (de) * | 1972-11-20 | 1974-11-08 | Ferodo Sa | |
| DE2357860C2 (de) | 1972-11-20 | 1986-05-28 | Valeo, Paris | Kupplung |
| DE3142107A1 (de) | 1980-10-24 | 1982-06-09 | Valeo, 75017 Paris | "vorrichtung fuer eine kupplung" |
| EP0695885A1 (de) * | 1994-08-03 | 1996-02-07 | Carraro S.P.A. | Reibkupplungseinheit |
Also Published As
| Publication number | Publication date |
|---|---|
| CN120826542A (zh) | 2025-10-21 |
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