EP3601842A1

EP3601842A1 - Clutch cage arrangement having a primary gearwheel and having a stamped indentation, projecting into said primary gearwheel, of a counterpart plate or of a disk

Info

Publication number: EP3601842A1
Application number: EP18712501.8A
Authority: EP
Inventors: Christophe Muller
Original assignee: Schaeffler Technologies AG and Co KG
Current assignee: Schaeffler Technologies AG and Co KG
Priority date: 2017-03-30
Filing date: 2018-03-01
Publication date: 2020-02-05
Also published as: CN110462252A; DE102017106870B3; WO2018177458A1; DE112018001636A5; JP2020510800A; BR112019018082A2

Abstract

The invention relates to a clutch cage arrangement (1) for a motor vehicle drivetrain clutch, in particular a wet motorcycle clutch, having a primary gearwheel (2) which is designed to be driven by a crankshaft, and having a clutch cage (4) which is driveable by the primary gearwheel (2) via a damping element (3), wherein, on that side of the primary gearwheel (2) which is averted from the clutch cage (4), there is arranged a counterpart disk (5) which is connected to the clutch cage (4) by means of a rivet connection (6), such that the primary gearwheel (2) is, in the axial direction of the clutch cage arrangement (1), arranged at least in sections between the clutch cage (4) and the counterpart disk (5), wherein the counterpart disk (5) and/or the clutch cage (4) has at least one stamped indentation (7, 8) which projects into the primary gearwheel (2) in the axial direction. The invention furthermore relates to a multiplate clutch for use in a vehicle, in which multiplate clutch a clutch cage arrangement (1) according to the invention is used.

Description

Coupling basket assembly with a primary gear and a projecting into this impression of a counter-plate or a disc

The invention relates to a clutch basket assembly for a Kraftfahrzeugantriebs- sträng / for a motor vehicle drive train coupling, such as a kind

Multi-plate clutch, in particular in the manner of a wet motorcycle clutch, with a primary gear that is prepared to be driven by a crankshaft, and with one of the primary gear with the interposition of a damping element driven clutch basket, wherein the clutch basket

opposite side of the primary gear, a counter-disk is arranged, which is connected via a riveted joint with the clutch basket, so that the

Primary gear in the axial direction of the clutch basket assembly at least

is arranged in sections between the clutch basket and the counter-disk. From the prior art clutch clutch assemblies are known in particular for multi-plate clutches of motorcycles, which transmit torque from a crankshaft to a transmission input shaft. In order to avoid vibrations, vibrations and imbalances that occur in practice

Motor nonuniformity results in compensating, so these are not transmitted to the clutch or even the transmission are between the

crankshaft side primary gear and the clutch input side

Clutch basket Damping elements, such as in the form of rubber buffers or

Rubber rings, arranged. The damping elements are further in the axial direction via a rivet connection between the counter-disc and the primary gear

arranged so that the torque after its damping by the

Damping elements is forwarded via rivets to the clutch basket.

By way of example, the German patent application DE 10 2016 217 445 A1 as

Device disclosed that discloses a damping element between a on and a driven-side element. A disadvantage of the prior art is that in the damping of the

Damping element absorbed energy especially at high operating times and cyclic load harmful to the rivets and on the

Damping itself affects. Thus, after a certain load time Nietkopffrisse occur and / or it comes in the damping elements to cracks / cracks due to fatigue and high surface pressure. Also show age-related problems.

Accordingly, the invention has for its object to solve the problems of the prior art and in particular a clutch basket assembly

to provide that causes no failure of the damping function of the damping elements even at a cyclic high load.

This is inventively achieved in that the counter-disc and / or the clutch basket has at least one impression, which protrudes in the axial direction in the primary gear or at least one of the two components

Counter-disc and clutch basket has at least one impression, which protrudes in the axial direction seen in the primary gear. By means of that axial

Incrementally, a bearing surface is realized for the damping elements arranged between the clutch basket and the primary gear in the circumferential direction. Thus, the circumferentially transmitted force / transmitted torque is transmitted via indentations to the rivet of the riveted joint, which lowers the surface pressure. Advantageous embodiments are claimed in the subclaims and explained in more detail below.

Thus, it is advantageous if the rivet connection is arranged in the region of the at least one impression. This allows for efficient power transmission due to the short distances between the indentation and the rivet. In addition, that embodiment allows a sufficiently large area to be available for the formation of a rivet head. Characterized in that the impressions in the axial direction in protrude the primary gear, this version also guarantees that the rivet head takes up no additional space in the axial direction.

Preferably, the counter-disc has a counter disc imprint and the

Clutch basket on a clutch basket imprint on. Thus, at least two impressions are formed. Further advantageous is / are the

Gegenscheibeneinprägung (s) and the Kupplungskorbeinprägung (s) facing each other / run towards each other, so on the one hand, the power transmission of the damping elements in the circumferential direction is performed efficiently and on the other hand, the axial space is used optimally.

In particular, when the Gegenscheibeneinprägung and the

Contact clutch basket insert and / or are in direct contact with each other, a simple design is realized without the aid of additional components. The Gegenscheibeneinprägung and the Kupplungskorbeinprägung are thus coordinated with each other to a force and torque transmission below

Avoidance of load peaks to realize.

In a preferred embodiment, the primary gear continues

circular arc segment-like windows, wherein in at least one of which the at least one damping element is arranged, or better, in each of which a (separate) damping element is included. The arcuate segment-like windows preferably extend in an angle range between 10 ° and 35 °, so that a plurality of arcuate segment-like windows can be arranged in the circumferential direction in order to receive respective damping elements. The individual windows are separated from each other by the impressions, in which in turn the rivet connection is mounted, so that the force is transmitted uniformly distributed in the circumferential direction, which increases the life of the device according to the invention. As soon as the at least one damping element is an extruded rubber buffer which is designed to be complementary to the arcuate segment-like window, the flow of force within the clutch basket assembly is further optimized. The extruded Rubber buffer has a circular arc segment shape, which can be referred to as a trapezoidal shape after a minimum elastic deformation. Such a form can be produced inexpensively and in large numbers by means of an extruder, which increases the economic efficiency. Furthermore, an adjustment of the rubber buffer is made possible in the window, so that the gap dimensions are kept low, a

Relative friction is lowered and thus the Dissipationswärmeeintrag is lowered.

As an alternative to the extruded rubber buffer, this is at least one

Damping element as a spring, preferably as a bow spring, ausgestaltbar. This is, as can be seen in the application in a dual-mass flywheel, able to reliably compensate for very high imbalances, whereby the risk of material failure is banned.

Further advantageously, the at least one impression of the clutch basket assembly according to the invention forms two substantially perpendicular to the circumferential direction of the primary gear flanks, which are each prepared to be in contact with a (certain / same) damping element to one of the primary gear to the respective damping element transmitted force on the impression to the riveted joint. The flanks have one

sufficiently large contact surface for the damping elements, so that a high surface pressure is avoided, which increases the fatigue strength of the clutch basket assembly.

Overall, the windows formed by the indentations are advantageously prepared to be substantially rectangular, preferably

trapezoidal, have profile. Such a profile results, in particular, from a punching and / or embossing step and can therefore be economically produced even in large quantities. Furthermore, such a trapezoidal profile guarantees a sufficiently large contact surface for both the damping element, as well as for the rivet connection, thus even further to the advantages mentioned above

strengthen. The invention also relates to a multi-plate clutch for use in one

Vehicle, preferably a motorcycle, muffling between one

Drive unit and a power take-off unit is arranged and the one

Has clutch basket assembly. The clutch basket assembly is in this case such that it has the impressions mentioned above. Thus, the advantages presented above with regard to the clutch basket arrangement can be scaled to the entire multi-plate clutch.

In other words, it can be said that the invention of the solution of

Problems ensues that the currently used damping elements of a

Coupling basket arrangement show weaknesses in a life test. These are essentially due to the fact that the damping elements between the clutch basket and the counter-plate by a long rivet and a

Spacer sleeve can be riveted. This results in about Nietkopffrisse and damping element fractures due to fatigue and / or by the resulting high local surface pressure.

The invention now disclosed increases the strength of the clutch basket assembly by optimizing riveting and providing a low surface pressure on the damping member. Furthermore, the efficiency of the device is increased, since in the embodiment according to the invention no spacer sleeve between the rivet and the damping element is more to use, especially since the rivets are significantly shorter. These short rivets are therefore able to absorb higher bending moments. The economic provision is further increased by the fact that the damping elements are now extruded and no longer sprayed.

Another advantage of the invention is in the realized by her

Weight reduction, since the arc-segment-like windows lead to a lower weight of the primary gear. The rivet shortening favors the

Weight reduction. It could also be said that the present invention relates to a clutch basket equipped with rubber dampers, in particular an outer basket, for a multi-plate clutch, in particular for a wet motorcycle clutch. Under

Liner of the primary gear, on the torque of the

Internal combustion engine can be introduced into the clutch basket, a counter-plate is riveted to the clutch basket.

The counter-plate and / or the clutch basket have embossed areas which penetrate the primary gear in the axial direction, so that counter-plate and

Clutch basket in the region of their riveting touching each other within the primary gear. Between the embossed areas and spoke sections of the

Primary gear wheels are provided circumferentially distributed Gummitrapeze to transmit the torque of the internal combustion engine damping on the flanks of the embossed areas.

The invention will be explained below with reference to preferred embodiments with reference to the accompanying figures.

Show it:

Fig. 1: a clutch basket assembly in a perspective view;

Fig. 2: sectional drawing along the circumferential direction of

Clutch basket assembly in a first embodiment;

3 is a sectional view along the circumferential direction of

Clutch basket assembly in a second embodiment;

4 shows a sectional drawing according to section IV-IV from FIG. 2; Figure 5 is a longitudinal section through the clutch basket assembly taken along line V-V of Figure 4;

Fig. 6 is a longitudinal section through the clutch basket assembly along the line

V1-VI of Fig. 4;

Fig. 7 is a plan view of the clutch basket assembly from a motor side;

Fig. 8 is a plan view of the clutch basket assembly of a

Transmission side; and

Fig. 9 shows a detail of a counter pulley for themselves.

The figures are solely for understanding the invention. The same elements are provided with the same reference numerals. The individual features can be dived among each other.

Fig. 1 shows a clutch basket assembly 1 according to the invention, which is mainly used in a multi-plate clutch, in particular a wet motorcycle clutch. A primary gear 2 is driven by a toothed portion 9 of a crankshaft. With the interposition of a damping element 3 is a

Transmit torque from the primary gear 2 to a clutch basket 4.

In the present case, a plurality of damping elements 3 are arranged. To the

To fix damping element 3 in the axial direction, a counter-disc 5 rotating with the primary gear 2 is connected to the clutch basket 4 by means of a rivet connection 6.

A counter disk impression 7 is introduced by means of a punching / embossing in the counter-disk / the counter-plate 5 such that a disk-side rivet head 10 has a predetermined contact surface. The Gegenscheibeneinprägung 7 protrudes into

Axial direction to the clutch basket 4 out. From Fig. 2, the function, which implements the counter disc 7 additionally for receiving the rivet head 10, clearly. 2 shows a section along the circumferential direction. If the primary gear 2 is driven, it moves in the illustration in FIG. 2 in the horizontal, that is, to the right or to the left. Thus, the force input visualized by means of an arrow P1 from the primary gear 2 is forced onto the damping element 3. Because of its ductility, that is

Damping element 3 able to compensate for irregularities in the force input from the primary gear 2. Along an arrow P2, the force absorbed by the damping element 3 is transmitted to the counter-disk 5. For this purpose, an edge 1 1 is designed by the imprint. This flank 1 1 is sufficiently large to avoid material damage caused by surface pressure in the counter-disk 5. The counter-disk 5 in turn, which is preferably configured as a piece of metal / sheet metal as described above, forwards the force received by the arrow P2 to the rivet connection 6 via a bolt rivet 12 (alternatively also a stepped rivet or blind rivet). The sheet is cyclically resilient, which is why a robust force transmission is guaranteed here.

The bolt rivet 12 of the rivet connection 6, in turn, forwards the absorbed force along the arrow P3 to the clutch basket 4. So allows the

inventive design first, a reliable force transmission from the damping element 3 to the counter-wheel 5 along P2, before the

Rivet connection along the arrow P3 finally passes the already damped movement along the arrow P3 on the basket 4. Thus, a flow of force along the arrows P1, P2, P3 is enabled, which separates the functions and thus avoids the formation of microcracks or other damage even after a long life. An embodiment based on the embodiment of FIG. 2 is shown in FIG. Here are two impressions, a Gegenscheibeneinprägung 7 and a Kupplungskorbeinprägung 8, realized. This embodiment has two advantages: For the first pulls a basket-side rivet head 13 no additional axial space requirement. Second, the force entry of the

Damping element 3 on the counter-plate 4 in two components, P2a and P2b, divided. Thus, a homogenization of the power transmission is achieved, which further protects the components and thus increases their service life.

4 shows a sectional view along the line IV-IV from FIG. 2. It can be seen here that the damping elements 3 essentially have a trapezoidal shape. Thus, they are the first extrudable, which makes them more economical. Second, it can be seen how far the respective flanks 1 1 of the impressions 7 extend in the radial direction. The resulting surface contact between the damping element 3 and the indentation 7 is thus sufficiently large to

reliably transmit torque / force. Each indentation 7 in this case forms two edges 1 1. One shows in the one

Circumferential direction, the other in the corresponding opposite. Thus, in both directions of the surface contact of the invention between the

Damping element 3 and the impression 7 achieved, so that both a

Acceleration pulse, as well as a brake pulse of the crankshaft is compensated. The edge 1 1 is similar in dimension essentially a contact surface 14, which is the counterpart to the flank 1 1 in the power transmission from the primary gear to the damping element 3, as the power transmission along the arrow P1.

Further, it can be seen that in the circumferential direction a plurality of similar

Damping elements 3 is arranged, which allows mass production and thus further increases their cost-effectiveness.

5 shows a longitudinal section through the plane indicated by V-V from FIG. 4.

Here, the formation of the two rivet heads 10, 13 in the indentations 7, 8 can be seen. The clutch basket 4 has the known basket shape to the

downstream coupling to serve as a kind of housing. In Fig. 6 is also a longitudinal section, but now shown along the line Vl-Vl of Fig. 4. Here, the gap between the radially inner portion of the primary gear 2 and the radially outer portion of the primary gear 2 is filled by damping elements 2. In the axial direction, the damping elements 3 are held on the one hand by the counter-disc 5 and on the other hand by the clutch basket 4. That the counter-disc 5 and the clutch basket 4 are connected via the rivet connection 6 and further on the indentations 7, 8 a power transmission in the circumferential direction is possible, it is apparent from the introduction to the description and the figures described above.

FIGS. 7 and 8 each show a plan view. In FIG. 7, a plan view is shown from the motor side. Thus, the counter-disc 5 with their impressions 7 can be seen. The indentations 7 have a trapezoidal shape and thus form the flanks 1 1 for transmitting power from / to the damping elements 3, which are almost completely covered in the plan view of the counter-disc 5. The tooth portion 9 of

Primary gear 2 is also clearly visible in Fig. 7.

In Fig. 8, the clutch basket assembly 1 is shown from the opposite side to the view of Fig. 7. So the view is directed into the interior of the clutch basket 4. The dimension of the Kupplungskorbeinprägungen 8 corresponds to that of the Gegenscheibeneinprägungen 7. The Kupplungskorbeinprägungen 8 take the basket-side rivet heads 13.

Figures 9a and 9b illustrate again the production of the indentations 7 in the counter-disc 5. Thus, as indicated by A and B, temporally successively assumed states of FIG. 9b illustrate a disc-shaped sheet, the impression 7 impressed. After a hole 15 has been provided for receiving a rivet in the sheet after embossing, the counter-disc 5 is completed. Coupling basket arrangement

primary gear

damping element

clutch basket

counter-disk

rivet

Gegenscheibeneinprägung

Kupplungskorbeinprägung

tooth portion

0 Disk-side rivet head

1 edge

2 pin rivet

3 basket-side rivet head

4 contact surface

5 hole

P1 force input of primary gear on damping element

P2 Force input of damping element on counter plate

P3 Force input from rivet to clutch basket

A Condition of the counter-disc before embossing

B Condition of the counter-disc after embossing

Claims

claims

1 . A clutch basket assembly (1) for a vehicle powertrain clutch having a primary gear (2) prepared to be driven by a crankshaft and one of the primary gear (2) below

Interposition of a damping element (3) drivable clutch basket (4), wherein on the clutch basket (4) facing away from the

Primary gear (2) a counter-disc (5) is arranged, which has a

Rivet (6) is connected to the clutch basket (4), so that the primary gear (2) in the axial direction of the clutch basket assembly (1) at least partially between the clutch basket (4) and the counter-disc (5) is arranged, characterized in that the counter-disc ( 5) and / or the clutch basket (4) has at least one imprint (7, 8), which in

Axial direction protrudes into the primary gear (2).

2. clutch basket assembly (1) according to claim 1, characterized in that the rivet connection (6) in the region of the at least one impression (7, 8) is arranged.

3. clutch basket assembly (1) according to any one of claims 1 or 2, characterized

characterized in that the counter-disc (5) has a counter disc imprint (7) and the clutch basket (4) has a clutch basket imprint (8), and that the counter disc imprint (7) and the clutch basket imprint (8) face one another.

4. clutch basket assembly (1) according to claim 3, characterized in that the Gegenscheibeneinprägung (7) and the Kupplungskorbeinprägung (8) contact.

5. clutch basket assembly (1) according to one of claims 1 to 4, characterized

in that the primary gearwheel (2) has arc-segment-like windows in which the at least one damping element (3) is arranged.

6. clutch basket assembly (1) according to claim 5, characterized in that the at least one damping element (3) is an extruded rubber buffer which is designed to be complementary to the circular arc segment-like window.

7. clutch basket assembly (1) according to claim 5, characterized in that the at least one damping element (3) is designed as a spring.

8. clutch basket assembly (1) according to any one of the preceding claims, characterized in that the at least one impression (7, 8) two in the

Substantially perpendicular to the circumferential direction of the primary gear extending flanks (1 1) ausformt, each of which is prepared, with a

Damping element (3) to be in contact to one of the primary gear (2) on the respective damping element (3) transmitted force over the

Imprint (7, 8) to the rivet connection (6) forward.

9. clutch basket assembly (1) according to any one of the preceding claims, characterized in that the at least one impression (7, 8) has a substantially rectangular profile.

10. multi-plate clutch for use in a vehicle which is arranged on the one hand dampening between a drive unit and an output unit and on the other hand a clutch basket assembly (1), characterized

in that the clutch basket arrangement (1) is designed according to one of the preceding claims.