DE102017113713B3 - Coupling system with a fixation plate defining an axial position of a slave piston - Google Patents

Abstract

The invention relates to a clutch system (1) for use in a motor vehicle, comprising a first clutch unit (2) which can be actuated by a first slave piston (3) and a second clutch unit (4) which is supported by a second slave piston (5). is operable, and with a coupling housing (6) in which the first and the second coupling unit (2, 4) are arranged, wherein the first and the second slave piston (3, 5) via a dual concentric slave cylinder (19) with a conduit system (7) having a first rigid conduit (8) and a second rigid conduit (9) for separately supplying fluid to the slave pistons (3, 5), the first and second rigid conduits (8, 9) of the conduit system (7) are coupled with a fixing plate (10) arranged outside the coupling housing (6) in such a way that a transport securing of the dual concentric slave cylinder (19) takes place.

Description

The invention relates to a coupling system for use in a motor vehicle, such as a car, a truck or a commercial vehicle. A generic clutch system has a first clutch unit, which can be actuated by a first slave piston, and a second clutch unit which can be actuated by a second slave piston. In addition, the two coupling units within a clutch housing, which is coupled on the one hand via a motor flange with a drive unit and on the other hand via a transmission flange with a transmission arranged. The first and second slave pistons are connected via a dual concentric slave cylinder to a conduit system having a first rigid conduit and a second rigid conduit to separate the two slave pistons separately, that is, independently of one another. to supply with fluid and thus to effect a respective actuation of the individual coupling units. Under a rigid / rigid line is basically understood as one which is configured by an elastically or hardly deformable material.

In the published patent application DE 10 2009 050349 A1 discloses a clutch which is hydraulically movable by means of a slave piston. In order to enable a precise as well as reliable operation by means of such a slave piston, a low-tolerance assembly of the slave piston in the clutch is required. That low-tolerance assembly takes some time for itself.

The problem of low-tolerance installation is then reinforced when it comes to double clutches, as for example from the published patent DE 10 2009 034 808 A1 are known acts. In these not only the slave piston on the respective clutch, but also the slave piston must be adjusted to each other.

Here, in order to meet those requirements for high accuracy, the compensation of inevitably occurring manufacturing tolerances is a time-consuming step in the assembly. It is particularly critical that the tolerance compensation takes place immediately before mounting the coupling system in the motor vehicle, so that the tolerance compensation for the / the slave piston is made together with a tolerance compensation of the threaded flange and / or the motor flange.

Against this background, the invention has the object to overcome the disadvantages of the prior art, or at least mitigate and in particular to disclose a clutch system that requires no further assembly work for his (s) slave piston prior to its installation in a drive train. Furthermore, to be provided by means of the invention, a device which holds the coupling system and especially during transport in position, so as to be able to deliver a total unit, in which no tolerance-compensating steps are more to make reliable. Further, the invention has for its object to secure the line system relative to the individual couplings in position.

This is achieved in that the first and second rigid line of the conduit system are coupled with a fixing plate arranged outside the clutch housing in such a way that a transport securing of the dual concentric slave cylinder takes place. Thus, it is possible to transport the entire coupling system, comprising the couplings with their housing and the line system, as a structural unit and thus continue to use without tolerance-compensating assembly steps. Moreover, the fixing plate increases the rigidity of the coupling system.

Functionally speaking, the coupling system is prepared to carry out a production assembly compensating step, also called a "shim process", immediately after production and subsequently to transport this position during transport, so that no further compensation steps subsequently occur due to the stiffness of the pipe system and the rigidity of the fixing plate ,

Advantageous embodiments are the subject of the dependent claims and are explained in more detail below.

Thus, the fixation plate preferably ensures an axial fixation of the dual concentric slave cylinder. An internally made tolerance compensation in the axial direction is therefore held rigidly by means of the fixing plate and does not have to be made again after transport.

Furthermore, there are advantages when the fixing plate is rigidly and releasably / reversibly connected to the first and second line. Thus, the fixing plate can be released immediately after the installation of the coupling system in the drive train, whereby it releases space and at the same time eliminates readjustment.

In particular when at least one first washer is arranged between the first clutch unit and the first slave piston, over the width / thickness of which the axial position of the first slave piston relative to the first clutch unit can be adjusted, the advantages of the prior art can be achieved Technology - namely a tolerance-balanced assembly - preserve and at the same time the disadvantages of the prior art - namely a readjustment after the transport of the coupling and the piping system - omitted. Under washers / shimmers discs / shim was meant spacers, which can take on different widths depending on the application.

In a further advantageous embodiment, at least one second washer is arranged between the second clutch unit and the second slave piston, over the width of which the axial position of the second slave piston relative to the second clutch unit is adjustable. Thus, each clutch is separately adjustable, resulting in high flexibility results, and at the same time, each clutch is rigid in its seat, due to the fixing plate.

Preferably, the first and the second washer are different from each other in their width along the longitudinal axis of the coupling system. This means that you have to react individually to the respective tolerances.

Alternatively, it is also possible to use washers with constant widths to increase the number of identical parts.

As soon as a third clutch unit, which can be actuated by a third slave piston, is arranged in the clutch housing, the concept can be extended to triple clutches. The third slave piston is in this case connected to a third line of the line system, which in turn is coupled to the fixing plate as a transport lock. In contrast to the first and second line, the third line is not necessarily rigid / stiff to design, since the rigidity and thus the positional stability of the system is already implemented on the rest of the pipe system.

The fixing plate is advantageously arranged orthogonal to the longitudinal direction of the lines. So is to realize a shoulder stop between the lines and the plate by simple structural measures, which enhances the fixation effect.

Preferably, the fixing plate is positively connected to the lines in order to easily detach the plate from the conduit system, without unfolding a destructive effect.

A further advantageous embodiment is characterized in that the longitudinal axis of the fixing plate extends substantially parallel to the longitudinal axis of the coupling system. This allows a compact arrangement of the fixing plate in space-optimized coupling space.

In other words, it can be said that the clutch system can be used in double or triple clutch systems and / or in hybrid systems by the clutches as a common unit together with the respective slave piston / clutch slave, preferably in the form of a dual-concentric slave piston, dual clutch English -Concentric-Cylinders, DCSC for short, is designed, delivered and installed. Thus, the goal is to minimize the tolerances from the system and thus make the clutch system more efficient.

Thus, the inventive solution is that the respective slave pistons are fixed via a rigid / rigid line directly / directly to the coupling unit, so as to be able to deliver the unit in a so-called "shimmed" / "geswimmten" state.

In summary, the invention relates to a coupling system, such as a double or triple clutch system, in which the individual clutches are installed and delivered together with the slave cylinders / clutch, such as a DCSC. Thus, by means of the interaction of the fixing plate and the rigid lines, a position assurance, in particular a transport lock, of the individual components to each other is created, which makes any subsequent assembly compensation processes superfluous.

In other words, the invention relates to a clutch system (double or triple clutch), in which the clutches can be installed, transported and delivered as a unit together with the Kuppungsnehmer (double CSC). Although it is known from the prior art to deliver couplings and clutch receivers separately, the customer must then minimize or adapt geometric tolerances during installation by means of washers themselves. The object of the invention, however, is to provide a safety device for a system comprising at least one coupling and an associated CSC such that the CSC can be held in position during transport. This allows the system to be shipped as an assembled unit to the customer. The CSC is fixed directly to the coupling unit via a rigid cable. The line system can be fixed, for example. Via a plate, the plate can be removed when installing the system again. In the installed state, the CSC is centered in the gear plate over the outer diameter of the pin and so kept radial and axial.

The invention will now be explained in more detail with reference to figures, in which context also different embodiments are explained.

• 1 ein Kupplungssystem mit einer Fixierungsplatte;
• 2 das Kupplungssystem aus 1 im Längsschnitt; und
• 3 einen vergrößerten Bereich aus 2, in dem zwei Beilagscheiben angeordnet sind.

Show it:

• 1 a coupling system with a fixing plate;
• 2 the coupling system 1 in longitudinal section; and
• 3 an enlarged area 2 , in which two washers are arranged.

The figures are merely schematic in nature and are for the sole purpose of understanding the invention. The same elements are provided with the same reference numerals.

1 shows a coupling system 1 according to the invention. A first coupling unit 2 , a first slave piston 3 , a second coupling unit 4 as well as a second slave piston 5 are of a clutch housing 6 surrounded and only in the section view 2 shown.

A pipe system 7 has a first rigid conduit 8th on, which is coupled to the first slave piston 3, and a second rigid conduit 9 , which is coupled to the second slave piston 5, on. By means of these two rigid / rigid pipes, it is possible, the slave piston 3 . 5 to supply separately with fluid. This is a dual concentric slave cylinder 19 necessary.

Those stiff lines 8th . 9 are so with one outside the clutch housing 6 arranged fixing plate 10 coupled, that they experience a transport safety. This is achieved by the fact that first the lines 8th . 9 a stiff saddle 11 in the region of the dual concentric slave cylinder 19 form. This guarantees that the longitudinal axes of the lines 8th . 9 substantially orthogonal to the longitudinal axis of the coupling system 1 run. Thus, they are arranged at right angles to and realize an axial stop for the slave piston 3, 5, which are thus fixed.

To those the rigid coupling of the lines 8th . 9 causing stiff saddle 11 to hold stationary, the second is a connection point 12 between the lines 8th . 9 the conduit system 7 and the fixing plate 10 realized. This can be positive and / or cohesive and / or cohesive nature. In a built-in state, which follows the transport state in which the fixation plate 10 their action unfolds become the slave pistons 3 . 5 Moreover centered in a gear plate, which provides both a radial and an axial stop of the lines.

The fixation plate 10 is substantially plate-shaped, that is parallelepiped with a comparison with the width and the length of low height, designed. In this case, the person skilled in the art is aware that all other geometries corresponding to the inventive idea of fixing the lines 8th . 9 Take account, such as curved or curved shapes, are part of the inventive idea.

For a rigidity of the individual lines 8th . 9 they are connected to each other by means of a web 13, so that no relative movement can occur between them.

The coupling system 1 or the clutch housing 6 also has a motor flange 14 and a gear flange 15 on, which represent an interface for mounting the coupling system.

In 2 is the coupling system 1 shown in a longitudinal section. In addition to the first coupling unit 2 , by means of the radially outer first slave piston 3 is actuated, and the second coupling unit 4 , which is actuated by means of the radially inner slave piston 5, is also a third coupling unit 16 arranged by a third slave piston 17 is pressed. That slave piston 17 is with a third line 18 connected, which does not necessarily have to be rigid.

The first and second slave pistons 3 . 5 are integrally configured with each other so that together they form the Dual-Concentric-Slave-Cylinder 19 (DCSC) realize. This is by means of the stiff saddle 11 with the stiff wires 8th . 9 connected, in conjunction with the fixing plate 10 allow the fixing of the DCSC with the coupling unit 1.

In 3 is the section labeled III 2 shown enlarged. Between the first slave piston 3 and the first coupling unit 2 is - with the interposition of a bearing - a first washer 20 arranged. This has a certain width along the longitudinal direction of the coupling system 1 on, so the DCSC 19 relative to the first coupling unit 2 ideally set.

Likewise, a second washer 21 between the second slave piston 5 and the second coupling unit 4 (with the interposition of a bearing) arranged. This also serves the axial length compensation, which compensates for all tolerances. The washers 20 . 21 can be of the same or different width. They are by means of the construction of the stiff saddle 11 , the rigid lines 8, 9 and the fixing plate 10 so kept in their place that they do not change their position even in transport.

LIST OF REFERENCE NUMBERS

1

coupling system

2

first coupling unit

3

first slave piston

4

second coupling unit

5

second slave piston

6

clutch housing

7

line system

8th

first stiff line

9

second rigid pipe

10

fixation plate

11

Stiff saddle

12

junction

13

web

14

motor flange

15

gearbox

16

third coupling unit

17

third slave piston

18

third line

19

Dual concentric slave cylinder / dual concentric slave cylinder

20

first washer

21

second washer

Claims (10)

Clutch system (1) for use in a motor vehicle, having a first clutch unit (2) which can be actuated by a first slave piston (3) and with a second clutch unit (4) which can be actuated by a second slave piston (5), and with a clutch housing (6), in which the first and the second clutch unit (2, 4) are arranged, wherein the first and the second slave piston (3, 5) via a dual concentric slave cylinder (19) connected to a conduit system (7) are comprising a first rigid conduit (8) and a second rigid conduit (9) for separately supplying fluid to the slave pistons (3, 5), the first and second rigid conduits (8, 9) of the conduit system (7 ) are coupled with a fixing plate (10) arranged outside the coupling housing (6) such that a transport securing of the dual concentric slave cylinder (19) takes place. Coupling system (1) according to Claim 1 wherein the fixing plate (10) ensures axial fixation of the dual concentric slave cylinder (19). Coupling system (1) according to one of Claims 1 or 2 wherein the fixing plate (10) is rigidly and releasably connected to the first and second leads (8, 9). Coupling system (1) according to one of the preceding claims, wherein between the first coupling unit (2) and the first slave piston (3) at least a first shim (20) is arranged over the width of the axial position of the first slave piston (3) to the first coupling unit ( 2) is adjustable. Coupling system (1) according to any one of the preceding claims, wherein between the second coupling unit (4) and the second slave piston (5) at least one second washer (21) is arranged over the width of the axial position of the second slave piston (5) to the second coupling unit ( 4) is adjustable. Coupling system (1) according to Claim 4 and 5 , wherein the first and the second washer (20, 21) differ in their width along the longitudinal axis of the coupling system (1) from each other. Coupling system (1) according to one of the preceding claims, wherein in the clutch housing (6) a third coupling unit (16) is arranged, which is actuated by a third slave piston (17), wherein the third slave piston (14) with a third line (18 ) of the conduit system (7), which is coupled to the fixing plate (10) as a transport lock. Coupling system (1) according to one of the preceding claims, wherein the fixing plate (10) orthogonal to the longitudinal direction of the lines (8, 9, 15) is arranged. Coupling system (1) according to one of the preceding claims, wherein the fixing plate (10) is positively connected to the lines (8, 9). Coupling system (1) according to one of the preceding claims, wherein the longitudinal axis (16) of the fixing plate (10) extends substantially parallel to the longitudinal axis of the coupling system (1).

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