KR20190137003A - Reaction element for multidisk clutch - Google Patents

Abstract

The invention relates to a reaction element (16) which is used in a multi-disc clutch comprising a multi-disc assembly and has an axis of rotation (X). The reaction element (16) comprises: a radially oriented annular part (17); and a support part (18) configured to be a support point for the multi-disc assembly of the multi-disc clutch. The support part (18) comprises a plurality of protrusions each extending on each sector. The protrusions are separated from each other by an intermediate part forming a passage which allows the passage of oil between two successive protrusions.

Description

Recoil element for multi-disc clutch {REACTION ELEMENT FOR MULTIDISK CLUTCH}

The present invention relates to the field of clutches, in particular wet clutches, in motor vehicles.

The invention more specifically relates to a recoil element of such a clutch, a torque transmission device comprising the clutch and a method of manufacturing the recoil element.

Document EP2909052 discloses a double clutch for a transmission having a double clutch comprising a drive shaft, a first friction clutch, a second friction clutch, a first driven shaft, and a second driven shaft. Each clutch of the dual clutch is a multi-disc clutch called wet, which means that the disk of the clutch is submerged in oil.

Each multi-disc clutch has an input disk holder which rotates integrally with an input element, for example an engine's crankshaft, an output disk holder which rotates integrally with an output element, for example an output element for a first driven shaft first clutch, and an input. A plurality of friction disks that rotate integrally around the axis X of one of the disc holder and the output disk holder, and one rotations around the axis X of the other of the input disc holder and output disk holder, respectively. It includes a multi-disc assembly comprising a plurality of plates, each disposed on both sides of the friction disk. Friction linings are disposed between the plates. The friction disk and plate can move axially and approach each other.

Each clutch also includes an actuating device that includes a force transmission device. The force transmission device moves axially to transfer the stress of the claw on the multi-disc assembly from the clutch disengaged position to the clutch engaged position. Each clutch also includes a recoil element that rotates and translates integrally with the output disc holder. Recoil elements are disposed opposite the force transmission device with respect to the multidisc assembly such that when the force transmission device displaces the friction disc and plate by applying an axial stress to the multidisc assembly, these friction discs and plate are placed on the recoil element. Bearing, this time the recoil element exerts a reaction stress against the axial stress of the force transmission device. The plate is thus tightened against the friction disk and the friction lining so that torque is transmitted between the input element and the output element due to the axial stress of the force transmission device and the reaction stress of the reaction element at the clutch connection position.

The recoil element is formed of a radially oriented annular portion, wherein a support is formed on one side of the annular portion and protrudes from the side of the annular portion. In the clutch connection position, the support can be the support point for the multidisc assembly of the multidisc clutch, in particular the plate closest to the recoil element, so that it is the support that applies the reaction force to the multidisc assembly.

It is known that the support of these rebound elements of the prior art is formed around the entirety of the axis X in terms of the rebound element to form a continuous support to transfer the reaction stress to the multidisk assembly around the entirety of the axis X. . In order to allow the circulation of oil between the recoil element and the flat portion adjacent the recoil element, the recoil element is pushed in place of the support, forming a pushed in area at a plurality of points around the axis X, wherein the projection of the support is The oil may be relieved to drain across these pressure zones.

However, the indentation of the recoil element creates a droop at the end of the indent zone, which is the efficiency of the recoil element which generates a uniform reaction stress on the support surface of the recoil element and thus around the axis X in the multidisc assembly. Harms.

The basic idea of the present invention is to improve the recoil element in such a way that oil is discharged effectively without damaging the support plane of the recoil element to ensure a uniform reaction stress on the multi-disc assembly.

According to one embodiment, the present invention provides a recoil element for use in a multi-disc clutch comprising a multi-disc assembly,

The recoil element has an axis of rotation (X),

Recoil element,

Annular parts of radial orientation;

A support configured to be a support point for the multidisc assembly of the multidisc clutch;

The support portion is formed of a plurality of protrusions protruding from the annular portion and respectively extending on each sector, and the protrusions are each formed by an intermediate portion forming a passage allowing oil to pass between two successive protrusions, respectively. It is separated.

Due to these features, the recoil element can effectively discharge oil present between the adjacent plate and the recoil element of the multi-disc clutch due to its discontinuous support. In addition, the intermediary located between the protrusions of the support can preserve the support plane of the recoil element, ensuring a uniform reaction stress around the axis X on the multi-disc assembly of the clutch. Due to these features, a torque transmission device including a plurality of clutches is simplified.

According to another advantageous embodiment, this recoil element may have one or more of the following features.

According to one embodiment, the mediator is an unmodified zone.

According to one embodiment, the recoil element is formed of a monoblock with one of an input disc holder and an output disc holder.

According to one embodiment, the intermediate part extends in the plane of the annular part.

According to one embodiment, the protrusion is an arcuate portion.

According to one embodiment, the mediator extends in each range comprised between 2 ° and 15 °, respectively.

According to one embodiment, the protrusions are formed by stamping or molding the annulus.

According to one embodiment, the protrusion has a cold rolled top and the cold rolled top has a thickness which is radially smaller than the thickness of a portion of the annular part on either side of the top.

Due to these features, the cold rolled section can increase the rigidity of the support to more accurately ensure the support function of the recoil element and improve the flatness of the support. The thickness here represents the cross-sectional dimension in the direction along the axis X.

In the plane in which axis X passes and intersects the support, the support has a V-shaped section.

According to one embodiment, the present invention,

-Input disc holder,

-Output disc holder,

A multi-disc assembly comprising at least one friction disk integrally rotating about an axis X of one of the input disk holder and the output disk holder, each having at least two plates on each side of the at least one friction disk Wherein the two plates are integrally rotated about an axis (X) of the other of the input disk holder and the output disk holder; And

A recoil element as disclosed above, which is integrally rotated axially about an axis X of one of the input disc holder and the output disc holder, the reaction stress being applied when a stress of a clutch is applied to the multi disc assembly; Provided is a multi-disc clutch, in particular for automobiles, comprising a recoil element configured to apply to an assembly.

According to one embodiment, the recoil element is formed of a monoblock with one of an input disc holder and an output disc holder.

According to one embodiment, the multidisc clutch further comprises an actuating device comprising a force transmission device, the force transmission device moving in an axial direction from the clutch disengaged position toward the clutch connection position to stress the clutch to the multidisc assembly. Is authorized.

According to one embodiment, the force transmission device is arranged in such a way as to sandwich the multi-disc assembly and the recoil element, and in the clutch connection position, the plate and the at least one friction disk are force transfer by the stress and the reaction stress of the clutch. Tightened by the device and the recoil element, it transfers torque between the input disc holder and the output disc holder.

According to one embodiment, the recoil element is a support disc secured to one of the input disc holder and the output disc holder.

According to one embodiment, the recoil element is integral with the output disc holder.

According to one embodiment, one or each disc holder comprises a cylindrical skirt configured to cope with a friction disk and a plate of a multi-disc assembly.

According to one embodiment, the cylindrical skirt comprises grooves that cooperate with the grooves of the plate and the friction disk of the multidisk assembly.

According to one embodiment, the present invention,

A torque input element rotating around the axis, which can be rotationally connected to the crankshaft of the heat engine,

A first torque output element that can be rotationally connected to the first input shaft of the gearbox,

-In the direction of transmission of torque, a parameter element disposed between the torque input element and the torque output element,

A first clutch as disclosed above, which is an input clutch, which selectively connects the torque input element and the intermediate element by friction,

A torque transmission device, in particular for automobiles, comprising at least one second clutch as described above, which is a first output clutch, which selectively connects the intermediate element and the first torque output element by friction.

According to one embodiment, the torque transmission device,

A second torque output element that can be rotationally connected to a second input shaft of the gearbox,

A third clutch as disclosed above, which is a second output clutch, which selectively connects the intermediate element and the second torque output element by friction.

The present invention also provides

An input element capable of rotationally interlocking around axis (X),

Two output elements, and

An input clutch with an input disk holder and an output disk holder, a first output clutch and a second output clutch with an input disk holder and an output disk holder, respectively, wherein at least one of the input element and the two output elements 3, 4; The present invention relates to a torque transmission device for a vehicle including three clutches arranged to transmit torque therebetween.

The torque transmission device is installed such that the output disk holder of the input clutch rotates integrally with the input disk holder of the first output clutch and the input disk holder of the second output clutch;

Each clutch comprises an axially movable force transmission device, a recoil element, an input disc supported by the input disc holder, and an output disc supported by the output disc holder, the force transmission device being in the direction of the recoil element. When pressing the input disk and the output disk against each other by applying an axial stress, the input disk and the output disk of each clutch are axial with respect to each other between the recoil element of the clutch and the axially movable force transmission device. Direction, configured to connect the input disc holder and the output disc holder,

The torque transmission device has an input clutch radially disposed inside the first output clutch 20 and the second output clutch, the recoil element of the input clutch in the axial direction, on the one hand with the input disk and the output disk of the input clutch, On the other hand, it is arranged between a part of the output disk holder of the first output clutch, a part of the output disk holder of the second output clutch, a part of the force transmission device of the first output clutch and a part of the force transmission device of the second output clutch. Characterized in that;

A recoil element of the input clutch is formed directly on one of the input disc holder and the output disc holder of the input clutch.

According to one embodiment, the recoil element of the first output clutch or the second output clutch is directly formed in the input disk holder or the output disk holder of the first output clutch or the second output clutch.

According to one embodiment, the output disk holder of the input clutch, the output disk holder of the first output clutch, the output disk holder of the second output clutch, the force transmission device of the second output clutch and the force transmission device of the first output clutch are respectively Axial offset sections, in particular successively, superimposed on one another in their axial offset sections, and the recoil elements of the input clutch are formed radially at the same position as at least one of these axial offset sections.

According to one embodiment, there is a plane perpendicular to the axis of rotation that intersects with either the input disk or the output disk of each of the three clutches.

According to one embodiment, the output disk holder of the input clutch is installed to rotate integrally with the input disk holder of the first output clutch and the second output clutch via a connecting element, the output disk holder of the input clutch, the first output clutch and The input disc holder and the connecting element of the second output clutch together form an intermediate array of transmissions, of which two of the three clutches, preferably three, have their recoil elements formed directly on the intermediate array of transmissions.

According to one embodiment, the input disk holder of the first output clutch and the input disk holder of the second output clutch are formed in the same member, and the recoil element of the second output clutch is formed directly in this member.

According to one embodiment, a second torque input element which can be driven by an electric machine comprises a member which together forms an intermediate array of the transmission, in particular an input disk holder of the first output clutch and an input disk holder of the second output clutch. And rotation is connected.

According to one embodiment, the input clutch has its recoil element formed directly on its output disk holder, and the input disk holder of the input clutch is designed to receive torque from the crankshaft of the vehicle.

According to one embodiment, the present invention provides a method of making a recoil element for use in a multi-disc clutch comprising a multi-disc assembly, the method comprising:

Providing a member comprising an annular portion;

Forming a support on one surface of the annular portion by means of a molding tool such that the support protrudes from one surface of the annular portion,

The support is configured to be a support point for the multi-disc assembly of the multi-disc clutch, wherein the forming tool includes a plurality of punches each extending on each sector, the punches being a plurality of protrusions each of which extends on each sector. Spaced apart from each other so as to form, the projections are separated from each other by mediation portions that each allow passage of oil between two successive projections.

According to one embodiment, the forming tool comprises an equal number of punches with the protrusion to be implemented.

According to one embodiment, the step of forming the support is carried out by stamping or molding.

According to one embodiment, during the forming step of the support by forming, the top of the protrusion is cold rolled, and the cold rolled top has a thickness that is radially smaller than the thickness of a portion of the annular portion on either side of the top.

DETAILED DESCRIPTION OF THE INVENTION The following description of a plurality of specific embodiments of the invention, given by way of example and not by way of limitation only with reference to the accompanying drawings, makes the invention better understood, and the other objects, details, features and advantages of the invention more obvious. Will be.
1 shows a partial cross-sectional view of a wet triple clutch for a hybrid architecture according to a first embodiment of the invention.
Figure 2 shows a rear perspective view of a disc holder with a recoil element in accordance with an embodiment of the present invention.
FIG. 3 shows a front perspective view of the disc holder of FIG. 2.
4 shows a partial perspective view of the disc holder of FIGS. 2 and 3.
5 illustrates a partial cross-sectional view of a triple clutch for a hybrid architecture according to another embodiment of the present invention.
6 illustrates a partial cross-sectional view of a triple clutch for a hybrid architecture according to another embodiment of the present invention.

In this specification and claims, the terms “outer” and “inner” and “axis” and “radiative” orientations will be used to refer to elements of the torque transmission device in accordance with the definitions given in the specification. For convenience, the " radial " orientation is a direction that extends inwardly outward from the rotational axis X of the various clutches that determine the " axis " orientation and is perpendicular to the axis X, wherein the " circumferential " orientation is the axis X Perpendicular to and perpendicular to the radial direction. The terms "outer" and "inner" are used to define a position relative to another element of one element, with respect to the axis X, the element close to the axis is in contrast to the outer element located radially circumferentially. It is called internal. On the other hand, the terms "rear" AR and "front" AV are used to define a position relative to another element of one element along the axial direction, where an element designed to be placed close to the internal combustion engine is referred to as the front and the gearbox An element designed to be placed close to is referred to as a back.

1,

A torque input element 2 which can be rotationally connected to a crankshaft (not shown) of the heat engine,

A first torque output element 3 which can be rotationally connected to a first input shaft (not shown) of the gearbox,

A second torque output element 4 which can be rotationally connected to a second input shaft (not shown) of the gearbox, and

Shows a torque transmission device 1 comprising a torque input element 2 and an intermediate element 5 arranged between the torque input element 2 and the first (3) and second (4) torque output elements, and have.

In the embodiment shown in FIG. 1, the first and second output elements 3, 4 comprise a plate and a hub, the inner circumference of the hub being inscribed and respectively with the first and second shafts of the gearbox. Can cooperate. In the contemplated embodiment, the first and second shafts of the gearbox are coaxial.

The device 1 also comprises an input clutch 10 which selectively connects the input element 2 and the intermediate element 5 by friction.

The input clutch 10 is

An input disk holder 11 which rotates integrally with the input element 2,

An output disk holder 12 which rotates integrally with the element 5, and

A plurality of, in this case, four, friction disks that are integrally rotated with the input disk holder 11 and a plurality of plates, each of which is arranged on both sides of each friction disk, which are integrally rotated with the output disk holder 12. And a multi-disc assembly 13. The friction disk includes a friction lining fixed to each side of the support disk. In the clutch connection position of the clutch 10, the plates tighten the friction lining to transfer torque between the input disk holder 11 and the output disk holder 12.

Each disk holder 11, 12 synchronizes all plates and all friction disks in rotation. Each disc holder 11, 12 comprises a cylindrical skirt on which a plate or friction disc is installed.

The friction disk of the multi-disc assembly 13 includes grooves around its radially inner circumference, which grooves cooperate with grooves located about the radially outer circumference of the cylindrical skirt of the input disk holder 11. Thus, the friction disk is external to the cylindrical skirt in the radial direction.

The plate of the multi-disc assembly 13 includes grooves around its radially outer circumference, which grooves cooperate with grooves located about the radially inner circumference of the cylindrical skirt of the output disk holder 12.

The input clutch also includes a recoil element 16 having an annular portion 17 in radial orientation and a support portion 18 protruding from one surface of the annular portion 17. The support 18 of the recoil element 16 serves to support the plate adjacent the recoil element 16 in the multi-disc assembly and in particular in the clutch connection position. The recoil element 16 rotates integrally with respect to the output disc holder 12 about axis X and along axis X in the axial direction.

In the embodiment shown in FIGS. 1 to 4, the recoil element 16 and the output disk holder 12 form one and the same element of the input clutch 10. In practice, the recoil element 16 is here formed at one of the ends of the output disc holder and therefore arranged parallel to the plate and friction disc of the multi disc assembly 13.

The supports 18 are each formed of a plurality of protrusions extending on each sector, the protrusions being arcuate and separated from each other by the intermediate portions. In other embodiments, not shown, the protrusions are linear.

The device also provides a frictional connection between the first output clutch 20 and the intermediate element 5 and the second output element 4 which selectively connect the intermediate element 5 and the first output element 3 by friction. And a second output clutch 30 that selectively connects.

The first output clutch 20,

An input disc holder 21 which rotates integrally with the element 5,

An output disc holder 22 which rotates integrally with the first output element, and

A plurality of, in this case, three, friction disks, which are integrally rotated with the output disk holder 22, and a plurality of plates, each of which are arranged on both sides of each friction disk, which are integrally rotated with the input disk holder 21; And a multi-disc assembly 23. The friction disk includes a friction lining fixed to each side of the support disk. In the clutch connection position of the clutch 20, the plates tighten the friction lining to transfer torque between the input disk holder 21 and the output disk holder 22.

Each disc holder 21, 22 comprises a cylindrical skirt on which a plate or friction disc is installed.

The friction disk of the multi-disc assembly 23 includes grooves around its radially inner circumference, which grooves cooperate with grooves located about the radially outer circumference of the cylindrical skirt of the output disk holder 21.

The plate of the multi-disc assembly 23 includes grooves around its radially outer circumference, which grooves cooperate with grooves located about the radially inner circumference of the cylindrical skirt of the input disk holder 21.

The first output clutch 20 has a recoil element 26 having a radially oriented annular portion 27 and a support portion 28 which is located on one surface of the annular portion 27 and protrudes from the surface of the annular portion 27. Also includes. The support 28 of the recoil element 26 serves as a support point for the multi-disc assembly and in particular for the plate adjacent the recoil element 26 in the clutch connection position. The recoil element 26 is fixed in rotation about the input disk holder 21 about axis X and along axis X in the axial direction.

In the embodiment shown in FIG. 1, the recoil element 26 and the input disc holder 21 are formed on two members separate from the clutch 20.

The support 28 may have a structure similar to the support 16 disclosed above.

The second output clutch 30 is formed in a similar manner as the first output clutch 20. Thus, the second output clutch 30 likewise has a recoil element 36 with an input disc holder 31, an output disc holder 32, a multi-disc assembly 33, an annular part 37 and a support 38. It includes.

In the embodiment shown in FIG. 1, the recoil element 36 and the input disc holder 31 are two members fixed relative to one another, separate from the second output clutch 30. In practice, the recoil element 36 is here a support disk which is fixed to one of the ends of the input disk holder 31 to be arranged parallel to the plate and friction disk of the multi-disc assembly 33. In one embodiment, not shown, the recoil element 36 and the output disc holder are one and the same element.

Each disc holder 11, 12, 21, 22, 31, 32 can synchronize all plates and all associated friction discs in rotation.

According to different embodiments, the plates rotate integrally with the input disc holders 11, 21, 31 and the friction discs rotate integrally with the output disc holders 12, 22, 32. In a variant, the plates rotate integrally with the output disc holders 12, 22, 32 and the discs rotate integrally with the input disc holders 11, 21, 31.

The clutch is of wet type and comprises for example 2 to 7 friction disks, preferably 3 or 4 friction disks. Such a multi-disc clutch can limit the radial height of the torque transmission device.

The first output clutch 20, the second output clutch 30, and the input clutch 10 are arranged in one of the other in the radial direction. In other words, there is a plane perpendicular to the axis of rotation connecting the output clutch 20, 30 and the input clutch 10 simultaneously.

Here, the input clutch 10 is arrange | positioned inside the radial direction of the 2nd output clutch 30 arrange | positioned inside the radial direction of the 1st output clutch 20. As shown in FIG.

The device 1 comprises a force transmission device 15 and an actuating device 14 associated with the input clutch 10. A holding device in the clutch disengaged position may be provided to push the force transmission device 15 of the input clutch 10.

The force transmission device 15 moves axially to transfer the stress of the clutch from the actuating device 14 toward the input clutch 10. The force transmission device applies axial stress to the multi-disc assembly 13 to displace the plate towards the disc. Thus, the operation is of "push" type.

The force transmission device 15 has a curved radially outer end that forms a support surface for applying axial stress on the multi-disc assembly, continuous or discontinuous.

The force transmission device 15 is arranged in front of the multi-disc assembly 13, while the reaction element 16 is arranged behind the multi-disc assembly 13.

Thus, in the clutch engagement position of the input clutch 10, the force transmission device 15 is displaced from front to back in the axial direction, thereby transferring the stress of the clutch to the multi-disc assembly 13 to friction with the plate of the recoil element 16. The disk can be accessed. When the plate adjacent to the kick element 16 comes into contact with the support 18, the kick element 16 applies a reaction stress against the stress of the clutch to the multi-disc assembly 13, ie from behind. In this way, the plates and friction disks of the multi-disc assembly 13 are tightened between the reaction element 16 and the force transmission device 15 by reaction and clutch stresses, thereby between the plates and the friction disks and accordingly Torque can be transmitted between the input element 2 and the intermediate element 5.

The device 1 also includes a force transmission device 25 and an actuating device 24 associated with the first output clutch 20. The force transmission device 25 moves axially to transfer the stress of the clutch from the actuating device 24 toward the friction disk and plate of the first output clutch 20.

The device 1 also includes a force transmission device 35 and an actuating device 34 associated with the second output clutch 30. The force transmission device 35 moves axially to transfer the stress of the clutch from the actuating device 34 toward the friction disk and plate of the second output clutch 30.

The force transmission devices 25, 35 are arranged behind the multi-disc assemblies 23, 33, while the reaction elements 26, 36 are arranged in front of the multi-disc assemblies 23, 33.

In the clutch engagement position of the output clutches 20, 30, the force transmission devices 25, 35 and the recoil elements 26, 36 act in a similar manner to those of the input clutch 10.

A holding device in the clutch disengaged position may be provided to push the force transmission devices 25, 35 of the output clutch 20, 30.

The actuating devices 24, 34, in particular their actuating chambers, of the output clutches 20, 30 are arranged one inside the other in the radial direction. The actuating devices 24, 34 of the output clutches 20, 30 are axially speaking, on one side of the first and second output elements 3, 4, and the actuating device 14 of the input clutch 10. ) Are on the other side of the first and second output elements 3, 4.

The force transmission devices 25, 35 of the output clutch 20, 30 each have a curved radially outer end that forms a support surface for applying axial stress on the multi-disc assembly 23, 33.

The intermediate element 5 is coupled to a connecting member 6 which can be rotationally interlocked by a rotating electric machine via a pinion around an axis parallel to the axis X. The connecting member 6 here is deviated from the clutches 10, 20, 30 in the axial direction. The connecting member 6 can be driven directly by the pinion.

In the first embodiment of FIG. 1, the recoil element 16 of the input clutch 10 is formed directly on the output disk holder 12 of the input clutch 10. The support 18 is thus stamped or preferably molded on the front face of the output disk holder 12.

The input clutch 10 is disposed inside the first output clutch 20 and the second output clutch 30 in the radial direction, and the recoil element 16 of the input clutch 10 is in the axial direction,

On the one hand the input disk and output disk of the input clutch 10,

On the other hand a part of the output disk holder 22 of the first output clutch 20, a part of the output disk holder 32 of the second output clutch 30, a force transmission device of the first output clutch 20 ( Since it is disposed between a portion of 25 and a portion of the force transmission device 35 of the second output clutch 30, the rebound element 16 directly inputs the recoil element 16 to reduce the axial congestion of the torque transmission device. It is advantageous to form on the output disk holder 12.

The output disk holder 12 of the input clutch 10, the output disk holder 22 of the first output clutch 20, the output disk holder 32 of the second output clutch 30, and the first output clutch 20. The force transmission device 35, the force transmission device 35 of the second output clutch 30, and the force transmission device 25 of the first output clutch 20 are superimposed on one another, in particular continuously.

These in particular each comprise an axial offset section (M). These elements are superimposed on one another in their axial offset interval M.

The recoil element 16 of the input clutch 10 is formed radially at the same position as at least one of these axial offset sections M. FIG.

The output disk holder 12 of the input clutch 10 is connected to the input disk holder 21 of the output clutch 20 by a connecting element L.

The recoil element 26 of the first output clutch 20 is formed directly on the connecting element L.

The connecting element is formed by an annular member disposed around the axis X, the radially inner portion of which is fixed to the output disk holder 12 of the input clutch 10 and the radially outer portion of the first output clutch 20. It is fixed to the input disk holder 21.

The output disk holder 12 of the input clutch 10 is installed to rotate integrally with the input disk holders 21, 31 of the first output clutch 20 and the second output clutch 30 via the connecting element L. do. The output disk holder 12 of the input clutch 10, the input disk holders 21, 31 and the connecting element L of the first output clutch 20 and the second output clutch 30 together form an intermediate array of transmissions ( 5) form.

Here, two of the three clutches 10, 20, 30 have their recoil elements 16, 26, 36 formed directly on the intermediate array 5 of the transmission.

A second torque input element 6, which can be interlocked by an electric machine, is connected in rotation with the intermediate array 5 of the transmission. To do this, it passes through the opening provided in the force transmission device 25 of the first output clutch 20.

In the second embodiment shown in FIG. 5, the recoil element 16 and the output disc holder 12 of the input clutch are formed on two separate members, the recoil element 16 being the intermediate array 5 of the transmission. It is supported in the axial direction with respect to the annular portion of the.

On the other hand, the recoil element 36 of the second output clutch 30 is formed directly on the input disk holder 31 of the second clutch.

In this embodiment, the input disk holder 31 of the second output clutch 30 and the input disk holder 21 of the first output clutch 20 are formed in the same member. This member has an annular cavity in which at least part of the input and output disks of the second output clutch 30 are accommodated. This member is fixed to the outside of the connecting member L in the radial direction.

The second torque input element 6, which can be driven by the electric machine via the pinion C, which is added by the engagement, is together the input disk holder 21 and the second output clutch of the first output clutch 20 ( It is connected in rotation with the member forming the input disk holder 31 of 30. For example, joining by grooves or rigid fixing may be used.

FIG. 6 shows a partial cross-sectional view of a triple clutch for a hybrid architecture according to a third embodiment of the invention, wherein the recoil element 16 of the input clutch 10 is an output disk holder 12 of the input clutch 10. ), The recoil element 36 of the second output clutch 30 is formed directly on the input disk holder 31 of the second output clutch 30.

Here, the three clutches 10, 20, 30 therefore have their recoil elements 16, 26, 36 formed directly on the intermediate array 5 of the transmission. The intermediate array 5 of transmissions is particularly simplified here.

2 to 4 show in one embodiment the recoil element 16 and the output disc holder 12 of the input clutch 10 in a separate manner.

The output disk holder 12 includes a perimeter skirted groove that can connect in rotation the friction disk of the multi-disc assembly 13. In this embodiment as shown, the recoil element 16 and the output disc holder 12 are one and the same member, where the recoil element 16 is radial from the rear end of the circumferential skirt of the output disc holder 12. Extends toward the inside. Thus, the recoil element 16 is parallel to the multidisc assembly 13 and abuts one of the plates of the multidisc assembly 13.

The recoil element 16 is formed of an annular portion 17 in a radial orientation, and a support 18 is formed on the front side of the annular portion 17 and protrudes from the front side of the annular portion 17. The support portions 18 are formed discontinuously on the front face of the annular portions 17 of the plurality of protrusions each extending in different angular sectors, the protrusions being arcuately separated from each other by the intermediate portions.

Thus, the support 18 is substantially discontinuous around the axis X. Furthermore, the medium separating the different arcuate parts can be flat or substantially planar so that the oil can be discharged by the space located between the medium and the flat part adjacent to the reaction element 16. In practice, the intermediate part is a zone which is not deformed by the forming step of the support part 18, and thus is continuous with the annular part 17. In a manner of optimizing the discharge of oil, it may be desirable to extend each medium sufficiently to be sufficient for the discharge of the oil stream. For example, the mediator may extend in each range included in 2 ° to 15 °, respectively.

The support 18 is formed by the shaping of the annular portion 17 of the reaction element 16. As can be seen in particular in FIG. 4, the shaping makes it possible to obtain cold rolling at the top 19 of the projection formed by the support 18. The cold rolled top has a thickness that is radially less than the thickness of a portion of the annular part on either side of the top. Thus, in the cross section, the support has a V-shape.

The cold rolled top 19 is obtained by the non-complementary form of the lower die and the upper die or punch. In practice, in order for the top 19 to be cold rolled, the punch or lower die must have a slightly larger form at the top of the top than the complementary shape required to limit the thickness of the recoil elements 16, 26, 36 at this position. do.

This structure of the supports 18, 28, 38 may be present in one or a plurality of clutches 10, 20, 30.

While the invention has been disclosed in connection with a plurality of specific embodiments, it is clear that the invention is not limited thereto and that the invention includes all technical equivalents of the disclosed means and combinations thereof, provided they fall within the scope of the invention.

The verbs "comprise" or "include" and their utilization do not exclude the presence of elements or other steps than those mentioned in the claims.

In the claims, any reference signs placed between parentheses shall not be construed as limiting the claim.

Claims (19)

In the recoil elements 16, 36, 36 used in the multi-disc clutches 10, 20, 30 comprising the multi-disc assemblies 13, 23, 33,
The recoil element 16, 36, 36 has a rotation axis X,
The recoil elements 16, 36, 36 are
Annular portions 17, 27, 37 in radial orientation; And
A support portion 18, 28, 38 configured to be a support point for the multi-disc assembly 13, 23, 33 of the multi-disc clutch 10, 20, 30;
The support portions 18, 28, 38 are formed of a plurality of protrusions protruding from the annular portions 17, 27, 37 and extending on each sector, respectively, and the protrusions are respectively oiled between two consecutive protrusions. Separated from each other by an intermediary forming a passage allowing passage of
Recoil element. The method of claim 1,
The intermediate part is a flat
Recoil element. The method of claim 2,
The intermediate part extends in the plane of the annular part 17, 27, 37.
Recoil element. The method according to any one of claims 1 to 3,
The protrusion is an arcuate part
Recoil element. The method according to any one of claims 1 to 4,
The intermediate portion extends in each range included in 2 ° to 15 °, respectively.
Recoil element. The method according to any one of claims 1 to 5,
The protrusions are formed by stamping or forming the annular portions 17, 27, 37
Recoil element. The method according to any one of claims 1 to 6,
The protrusion has a cold rolled top 19, the cold rolled top 19 being radially smaller than the thickness of a portion of the annular portions 17, 27, 37 on either side of the top 19. Having
Recoil element. Especially in the multi-disc clutches 10, 20, 30 for automobiles,
Input disc holders (11, 21, 31),
Output disc holders (12, 22, 32),
Multi-disc assembly 13, 23, comprising at least one friction disk integrally rotating about an axis X of one of the input disk holders 11, 21, 31 and the output disk holders 12, 22, 32. 33), at least two plates are disposed on both sides of the at least one friction disk, respectively, the two plates being the input disk holders 11, 21, 31 and the output disk holders 12, 22, 32. The multi-disc assembly (13, 23, 33), which rotates integrally around the other axis (X); And
Recoil element 16, 36, 36 according to claim 1, wherein the axis of one of the input disc holders 11, 21, 31 and the output disc holders 12, 22, 32. Configured to apply a reaction stress to the multi-disc assembly 13, 23, 33 when the stress of the clutch is applied to the multi-disc assembly 13, 23, 33 and rotate integrally axially around (X). Comprising the recoil element 16, 36, 36
Multi-disc clutch. The method of claim 8,
The recoil element 16, 36, 36 is formed of a monoblock with one of the input disc holders 11, 21, 31 and the output disc holders 12, 22, 32.
Multi-disc clutch. The method according to claim 8 or 9,
The recoil element 16, 36, 36 is integral with the output disc holder 12, 22, 32.
Multi-disc clutch. Input elements (2, 6), which can be rotationally linked about axis (X),
Two output elements (3, 4), and
An input clutch 10 having an input disk holder 11 and an output disk holder 12, and a first output clutch 20 having input disk holders 21 and 31 and output disk holders 22 and 32, respectively; A vehicle torque comprising a second output clutch 30 and comprising three clutches arranged to transfer torque between the input elements 2, 6 and at least one of the two output elements 3, 4. In the delivery device,
The torque transmission device has an output disk holder 12 of the input clutch 10 integrally with the input disk holder 21 of the first output clutch 20 and the input disk holder 31 of the second output clutch 30. Characterized in that it is installed to rotate;
Each clutch 10, 20, 30 has an axially movable force transmission device 15, 25, 35, a recoil element 16, 26, 36, an input disk supported by an input disk holder, and an output disk. An output disk supported by a holder, wherein the force transmission devices 15, 25, 35 apply an axial stress in the direction of the recoil elements 16, 26, 36 so that the input disk and the output disk are directed against each other. When pressed, the input disk and output disk of each clutch are axially relative to each other between the recoil elements 16, 36, 36 of the clutch and the axially movable force transmission devices 15, 25, 35. Pressured, configured to connect the input disk holder and the output disk holder,
In the torque transmission device, the input clutch 10 is radially disposed inside the first output clutch 20 and the second output clutch 30, and the recoil element 16 of the input clutch 10 is in the axial direction, On the one hand the input disk and the output disk of the input clutch 10, on the other hand a part of the output disk holder 22 of the first output clutch 20, the output disk holder 32 of the second output clutch 30 In part, between a part of the force transmission device 25 of the first output clutch 20 and a part of the force transmission device 35 of the second output clutch 30;
Recoil element 16 of input clutch 10 is characterized in that it is formed directly on one of input disk holder 11 and output disk holder 12 of input clutch 10.
Torque transmission device. The method of claim 11,
The recoil elements 26, 36 of the first output clutch 20 or the second output clutch 30 are directly connected to the input disk holder 21 of the first output clutch 20 or the second output clutch 30. 31) or formed on the output disk holders 22, 32
Torque transmission device. The method according to any one of claims 11 to 14,
The input disk holder 21 of the first output clutch 20 and the input disk holder 31 of the second output clutch 30 are formed in the same member, and the recoil element 26 of the second output clutch 30 is Formed directly on this member
Torque transmission device. The method according to any one of claims 11 to 13,
There is a plane perpendicular to the axis of rotation that intersects one of the input or output disks of each of the three clutches.
Torque transmission device. The method according to any one of claims 11 to 13,
The output disc holder 12 of the input disc 10 is installed to rotate integrally with the input disc holders 21, 31 of the first output clutch 20 and the second output clutch 30 via a connecting element L. And the output disk holder 12 of the input clutch 12, the input disk holders 21, 31 and the connecting element L of the first output clutch 20 and the second output clutch 30 together form an intermediate array 5 of transmissions. ), And two, preferably three of the three clutches 10, 20, 30 have their recoil elements 16, 26, 36 directly formed on the intermediate array 5 of the transmission.
Torque transmission device. The method of claim 15,
The second torque input element 6, which can be driven by an electric machine, comprises an intermediate array 5 of the transmission, in particular an input disc holder 21 and a second output clutch 30 of the first output clutch 20. Rotationally connected with a member forming together the input disk holder 31 of the
Torque transmission device. In the manufacturing method of the reaction elements 16, 36, 36 used in the multi-disc clutches 10, 20, 30 including the multi-disc assemblies 13, 23, 33,
Providing a member comprising an annular portion (17, 27, 37); And
The support portions 18, 28, 38 are supported on one surface of the annular portions 17, 27, 37 by a molding tool such that the supports 18, 28, 38 protrude from one surface of the annular portions 17, 27, 37. Forming;
The supports 18, 28, 38 are configured to be support points for the multi-disc assemblies 13, 23, 33 of the multi-disc clutches 10, 20, 30, the forming tools each having a plurality of extending on each sector. Punches, the punches being spaced apart from each other such that the supports 18, 28, 38 are formed into a plurality of protrusions extending on each sector, respectively, the protrusions passing through the oil between two successive protrusions, respectively. Separated from each other by an intermediary forming a passageway allowing
Method of manufacturing the recoil element. The method of claim 17,
Forming the supports 18, 28, 38 is carried out by stamping or molding
Method of manufacturing the recoil element. The method of claim 18,
During the step of forming the support portions 18, 28, 38 by molding, the top 19 of the projection is cold rolled, and the cold rolled top 19 is radially on either side of the top 19. Having a thickness smaller than the thickness of some of
Method of manufacturing the recoil element.

Images