Lamellar switching element with a wave spring, bearing arrangement and drive device

Abstract

Multi-plate shift element (LSE) for a drive device of a motor vehicle, comprising a plurality of first plates (LM1) connected to a first plate carrier (LT1) and axially displaceable, and a plurality of second plates (LM2) connected to a second plate carrier (LT2) and axially displaceable, wherein the first plates (LM1) and the second plates (LM2) are arranged alternately in the axial direction, wherein the plates (LM1, LM2) can be brought into frictional engagement with one another, wherein a wave spring (WF) is arranged between each two first plates (LM1), wherein each wave spring (WF) is arranged so as to enclose one of the second plates (LM2) or is enclosed by one of the second plates (LM2), wherein at least one of the wave springs (WF) is constructed with a corrugation (aW) formed in the axial direction, wherein the wave spring (WF) is designed as an open wave spring with a first butt end (SE1) and a second butt end (SE2). is designed,wherein the wave spring (WF) has at least a first circumferential section (UA1), a second circumferential section (UA2) and a third circumferential section (UA3) in the circumferential direction, wherein the first circumferential section (UA1) comprises the first butt end (SE1), the second circumferential section (UA2) comprises the second butt end (SE2) and the third circumferential section (UA3) circumferentially connects the first and the second circumferential section (UA1, UA2) to one another, wherein the first and the second circumferential section (UA1, UA2), - a radial extension (rE) different from the third circumferential section (UA3) and / or - has a corrugation (aW_1_2) formed in the axial direction with a wavelength (WL_1_2) deviating from the third circumferential section (UA3) in the circumferential direction.

Description

[0001] The invention relates to a multi-disk shift element with a wave spring. The invention further relates to a bearing assembly for a drive element of a motor vehicle with such a wave spring. The invention further relates to a drive device for a motor vehicle with such a bearing assembly.

[0002] Wave springs are used in a variety of ways as axial compensation or return elements. For example, wave springs are used in multi-plate shift elements as separating elements between individual plates to prevent drag losses due to friction between the plates. Furthermore, wave springs are used, for example, in the mounting of drive elements in motor vehicles to enable the springing of loose bearings against support elements. Drive elements in motor vehicles are torque-transmitting elements located between the drive source and the output. Drive elements are part of drive devices such as transmissions in the drive train, electric drives, or electric axle drives in a motor vehicle. The design in terms of shape, corrugation, and cross-section of wave springs largely determines their spring behavior under applied load.

[0003] The published patent application DE 10 2017 214 335 A1 discloses a gear set with a disk pack. Fig. According to section 3b of the published application, a spring element is designed in the form of an open wave ring with a round cross-section, which pushes two adjacent plates in a plate pack apart when not actuated and also causes a return stroke of a brake piston. The disadvantage of this solution is that the design with an open butt end, compared to the design with a closed spring element, results in an inhomogeneous spring effect across the circumference of the spring element under load. This inhomogeneous loading across the circumference of the spring element promotes the tilting of the plates resting against the spring element, which in turn can lead to increased and / or uneven friction between the plates to be separated by the spring element.

[0004] US 4 184 578 A shows a coupling arrangement which includes an open wave spring with a corrugation formed in the axial direction, which has different radial extensions at its butt ends than the remaining circumference and sections with different wavelengths along the circumference.

[0005] DE 602 05 661 T2 discloses a coupling arrangement which includes an open spring ring with a corrugation formed in the axial direction, which has different radial extensions at its hook-shaped butt ends than the remaining circumference.

[0006] WO 2005 / 083 292 A1 relates to a C-shaped wave spring with a corrugation in the axial direction, comprising an opening and a connecting part, wherein a wave height along the circumference is formed to be lower than at the remaining circumference.

[0007] DE 197 56 573 A1 claims a hydraulic clutch which contains an open wave spring with a corrugation formed in the axial direction, which is arranged between the clutch piston and the plate and which has at its butt ends different radial extensions from the remaining circumference as an anti-twist device.

[0008] US 2004 / 0 247 386 A1 shows an open wave spring with axial corrugation, which is arranged under a screw head and releases the screw head from the screwed component when the screw connection is loosened.

[0009] CN 2 10 034 248 U discloses an open wave spring with axial corrugation for preloading a fan bearing, wherein the butt ends are designed to be connectable to one another.

[0010] It is now an object of the invention to provide a lamella switching element with an open wave spring with homogeneous spring action, a bearing arrangement with such a wave spring and a drive device with such a bearing arrangement.

[0011] The problem is solved by the features of patent claims 1, 9 and 12. Advantageous embodiments emerge from the dependent patent claims, the description and the figures.

[0012] To achieve this objective, a multi-disk switching element comprising a wave spring with a corrugation formed in the axial direction is proposed. The wave spring is designed as an open wave spring with a first butt end and a second butt end. The wave spring has at least a first circumferential section, a second circumferential section, and a third circumferential section in the circumferential direction, wherein the first circumferential section encompasses the first butt end and the second circumferential section encompasses the second butt end. The third circumferential section connects the first and second circumferential sections to one another circumferentially.

[0013] According to the invention, the first and the second circumferential section have a radial extension different from the third circumferential section and / or a corrugation formed in the axial direction with a wavelength different from the third circumferential section in the circumferential direction.

[0014] This solution has the advantage that the spring action of the inventive wave spring with an open butt end can be adapted to the homogeneous spring action of a closed wave spring. This adaptation is achieved by the design of the first and second circumferential sections, which contain the butt ends of the open wave spring. The desired homogeneous spring action is achieved by forming a radial extension on the first and second circumferential sections that differs from the third circumferential section and / or a corrugation formed in the axial direction with a wavelength that differs from the third circumferential section in the circumferential direction. Furthermore, the radial extension of the first and second circumferential sections that differs from the third circumferential section can be advantageously designed as an anti-twist device for the wave spring and for its directional assembly.

[0015] According to one embodiment of the invention, the third circumferential section is interrupted by a fourth circumferential section, which is corrugated in the axial direction, and a fifth circumferential section, which is corrugated in the axial direction. The additional circumferential sections form additional support areas for a more uniform spring action of the wave spring under load.

[0016] Preferably, the fourth and fifth circumferential sections have a corrugation formed in the axial direction with a wave length that differs from the third circumferential section in the circumferential direction. The additional circumferential sections allow the desired spring effect of the wave spring to be achieved while forming a smaller wave height in the axial direction compared to embodiments with fewer circumferential sections. This leads to an advantageous reduction in the axial space requirement of the wave spring in the relaxed state.

[0017] According to one possible embodiment of the invention, the first circumferential section has a first extension in the radial direction, the second circumferential section has a second extension in the radial direction, and the third circumferential section has a third extension in the radial direction. The first extension has an axial opening arranged in the circumferential direction. The second extension has a smaller radial extension than the third extension. This embodiment makes it possible to achieve a spring effect comparable to that of a closed wave spring.

[0018] Preferably, at least parts of the radial extent of the first and second circumferential sections overlap in the circumferential direction. This configuration also makes it possible to achieve a spring effect comparable to that of a closed wave spring.

[0019] Preferably, the axial opening is formed along the first radial extension on the first circumferential section, and the second radial extension on the second circumferential section. In other words, the two butt ends can be locked via the first and second radial extensions. This reduces the risk of the wave spring jamming at the locked butt ends under load during assembly.

[0020] The described wave spring can be a component of a multi-disk switching element for a drive device of a motor vehicle. The multi-disk switching element comprises a plurality of axially displaceable first disks connected to a first disk carrier, and a plurality of axially displaceable second disks connected to a second disk carrier. The first disks and the second disks are arranged alternately in the axial direction and can be brought into frictional engagement with one another. A wave spring according to the invention is arranged between each two adjacent first disks, which wave spring surrounds one of the second disks or is arranged so as to be surrounded by one of the second disks.

[0021] Preferably, the first and second circumferential sections and / or the third circumferential section of the wave spring are arranged radially adjacent to the first plate carrier or the second plate carrier. This design has the advantage that the wave spring is held in position during the assembly process of the plate switching element by being radially braced against the first or second plate carrier. A further advantage of this design is that the radial bracing of the wave spring against the first or second plate carrier results in a defined axial force introduction under load. Since the wave spring cannot undergo radial expansion, the load merely causes the two butt ends to move towards each other due to a tangential stretching of the wave spring.Without the radial tension against the first or second plate carrier, the spring characteristic would result from a force superposition of radial expansion and tangential extension of the wave spring.

[0022] Preferably, the first and / or second circumferential portion of the wave spring is arranged so as to bear tangentially against the first or second plate carrier. This tangential contact can be advantageously configured to prevent the wave spring from rotating relative to the first or second plate carrier and to ensure its directional installation in the plate switching element.

[0023] The described wave spring can be a component of a bearing arrangement for a drive element of a motor vehicle for rotatably supporting a first component relative to a second component. The bearing arrangement comprises a bearing element designed as a floating bearing. A wave spring according to the invention is arranged between the bearing element and the first component or between the bearing element and the second component, which enables axial springing of the bearing element against the first or second component.

[0024] Preferably, the first and second circumferential sections and / or the third circumferential section of the corrugated spring are arranged so as to bear radially against the first component or the second component. This configuration has the advantage that the corrugated spring is held in position during the assembly process of the drive element by being radially braced against the first or second component. A further advantage of this configuration is that the radial bracing of the corrugated spring against the first or second component results in a defined axial force introduction under load. Since the corrugated spring cannot undergo radial expansion, the load merely causes the two butt ends to move towards each other due to a tangential stretching of the corrugated spring.Without the radial tension against the first or against the second component, the spring characteristic would result from a force superposition of radial expansion and tangential extension of the wave spring.

[0025] Preferably, the first and / or second circumferential portion of the wave spring is arranged so as to bear tangentially against the first component or the second component. This tangential contact can be advantageously configured to prevent the wave spring from twisting relative to the first or second component and to ensure its directional installation in the drive element.

[0026] The described bearing arrangement can be part of a drive device for a motor vehicle.

[0027] In addition to the aforementioned advantages of the invention, the described embodiments of a wave spring with an open butt end also offer advantages in terms of costs and process reliability during production. For example, in the production of closed wave springs, their butt ends are often welded together. Compared to the described embodiments of the invention, this leads to a significant increase in manufacturing costs due to additional production expenditure, for example, the use of suitable fluxes, increased energy requirements in the manufacturing process, and additional process steps such as cleaning and quality control at the weld points. Reducing the complexity of the manufacturing process also has a positive effect on the quality of the produced components.Furthermore, eliminating the welding process expands the possibilities for material selection, as non-weldable materials can also be considered for the production of the wave spring.

[0028] The invention will be explained in more detail below with reference to the accompanying figures, in which only those features relevant to the present invention will be described in detail. They show: Fig. 1: an open wave spring with axial corrugation and different radial extension at the butt ends; Fig. 2 an open wave spring with axial corrugation and different wavelength at the two butt ends; Fig. 3: a wave spring with axial corrugation and different radial extension as well as different wavelength at the two butt ends; Fig. 4: a wave spring with axial corrugation and different wavelength at the two butt ends and at two other circumferential sections; Fig. 5: a wave spring with axial corrugation and overlapping butt ends; Fig. 6a: a wave spring as a sectional side view with axial corrugation and overlapping butt ends, wherein a first butt end has an axial opening which surrounds a second butt end in the circumferential direction; Fig. 6b: a plan view of a wave spring with axial corrugation and overlapping butt ends, wherein a first butt end has an axial opening which surrounds a second butt end in the circumferential direction; Fig. 7: a multi-disk switching element for a drive device of a motor vehicle with a wave spring with axial corrugation; Fig. 8a: a multi-disk switching element for a drive device of a motor vehicle with a wave spring with axial corrugation, which is arranged in the radial direction between a first disc carrier and a second disc; Fig. 8b: a multi-disk switching element for a drive device of a motor vehicle with a wave spring with axial corrugation, which is arranged in the radial direction adjacent to a first disc carrier; Fig. 9: a multi-disk switching element for a drive device of a motor vehicle with a wave spring with axial corrugation, which is arranged in a tangential direction against a first disc carrier; Fig. 10: a bearing arrangement for a drive element of a motor vehicle with a wave spring with axial corrugation, which can preload a bearing element in the axial direction; Fig. 10a: a bearing arrangement for a drive element of a motor vehicle with a wave spring with axial corrugation, which is arranged in radial direction against a second component; Fig. 10b: a bearing arrangement for a drive element of a motor vehicle with a wave spring with axial corrugation, which is arranged in a tangential direction against a second component; and Fig. 11: a drive device for a motor vehicle with a bearing arrangement and a wave spring with axial corrugation.

[0029] In Fig. 1 shows an open wave spring WF with an axial corrugation aW. The open wave spring WF has a first circumferential section UA1, a second circumferential section UA2, and a third circumferential section UA3. The first circumferential section UA1 includes a first butt end SE1. The second circumferential section UA2 includes a second butt end SE2. The third circumferential section UE3 circumferentially connects the first and second circumferential sections UA1, UA2 to one another. Fig. 1 shows an embodiment of the open wave spring WF in which the first butt end SE1 at the first UA1 and the second butt end SE2 at the second circumferential section UA2 have a radial extension rE that is different from the third circumferential section UA3.

[0030] In Fig. 2 shows an open wave spring WF with an axial corrugation aW. The open wave spring WF has a first circumferential section UA1, a second circumferential section UA2, and a third circumferential section UA3. The first circumferential section UA1 includes a first butt end SE1. The second circumferential section UA2 includes a second butt end SE2. The third circumferential section UA3 circumferentially connects the first and second circumferential sections UA1, UA2 to one another. Fig. Figure 2 shows an embodiment of the open wave spring WF in which the first butt end SE1 on the first circumferential section UA1 and the second butt end SE2 on the second circumferential section UA2 have a corrugation aW_1_2 formed in the axial direction with a wavelength WL_1_2, and the third circumferential section UA3 has a corrugation formed in the axial direction with a wavelength WL_3. The wavelength WL_1_2 of this corrugation aW_1_2 formed in the axial direction differs from the wavelength WL_3 of the third circumferential section UA3 in the circumferential direction.

[0031] In Fig. 3 shows an open wave spring WF with an axial corrugation aW. The design combines the Fig. 1 and Fig. 2. Here, the wave spring WF has a radial extension rE at the first butt end SE1 of the first circumferential section UA1 and at the second butt end SE2 of the second circumferential section UA2 that differs from the third circumferential section UA3. Furthermore, the wave spring WF has an axially formed corrugation aW_1_2 with a wavelength WL_1_2 at the first butt end SE1 of the first circumferential section UA1 and at the second butt end SE2 of the second circumferential section UA2. The wavelength WL_1_2 of this axially formed corrugation aW_1_2 differs from the wavelength WL_3 of the third circumferential section UA3 in the circumferential direction.

[0032] In Fig. 4 shows an open wave spring WF with axial corrugation aW. The wave spring WF has a first circumferential section UA1, a second circumferential section UA2, and a third circumferential section UA3. The third circumferential section UA3 is interrupted by a fourth circumferential section UA4, which is corrugated in the axial direction, and a fifth circumferential section UA5, which is corrugated in the axial direction. The fourth circumferential section UA4 and the fifth circumferential section UA5 have an axially formed corrugation aW_4_5 with a wavelength WL_4_5 that differs from the third circumferential section UA3 in the circumferential direction.

[0033] In Fig. 5 shows an open wave spring WF with a first circumferential section UA1 and a second circumferential section UA2. The first circumferential section UA1 comprises a first butt end SE1. The second circumferential section UA2 comprises a second butt end SE2. In the illustrated embodiment, the first circumferential section UA1 and the second circumferential section UA2 overlap over their entire radial extent rE in the circumferential direction. In further embodiments, only parts of the radial extent rE of the first and second circumferential sections UA1, UA2 can overlap in the circumferential direction.

[0034] In Fig. 6a and Fig. Figure 6b shows a detailed sectional view of an open wave spring WF with a first circumferential section UA1 and a second circumferential section UA2. The first circumferential section UA1 comprises a first butt end SE1 with a first radial extension rE1. The first radial extension rE1 on the first circumferential section UA1 has an axial opening aO1 arranged in the circumferential direction. The second circumferential section UA2 comprises a second butt end SE2 with a second radial extension rE2. The axial opening aO1 on the first extension in the radial direction rE1 on the first circumferential section UA1 surrounds the second extension in the radial direction rE2 on the second circumferential section UA2 in the circumferential direction. The described embodiment is shown in Fig. 6a as a sectional view in side view and in Fig. 6b shown in plan view.

[0035] In Fig. 7 shows a multi-plate switching element LSE for a drive device of a motor vehicle with an open wave spring WF. The multi-plate switching element LSE comprises a plurality of axially displaceable first plates LM1 connected to a first plate carrier LT1 and a plurality of axially displaceable second plates LM2 connected to a second plate carrier LT2. The first plates LM1 and the second plates LM2 are arranged alternately in the axial direction. The first LM1 and second plates LM2 can be brought into frictional engagement with one another. A wave spring WF is arranged between each two first plates LM1. The wave spring WF encloses each of the second plates LM2. In a further embodiment, the wave spring WF can also be enclosed by one of the second plates LM2.

[0036] In Fig. 8a and in Fig. 8b is a lamella switching element LSE for a drive device AV of a motor vehicle with an open wave spring WF as in Fig. 7 described.

[0037] In Fig. Figure 8a shows an embodiment in which the first circumferential section UA1 and the second circumferential section UA2 and / or the third circumferential section UA3 of the wave spring WF are each arranged in the radial direction between the first plate carrier LT1 and a second plate LM2. In a further embodiment, the first circumferential section UA1 and the second circumferential section UA2 and / or the third circumferential section UA3 of the wave spring WF can each be arranged in the radial direction between the second plate carrier LT1 and a second plate LM2.

[0038] In Fig. Figure 8b shows an embodiment in which the first circumferential section UA1 and the second circumferential section UA2 and / or the third circumferential section UA3 of the wave spring WF are arranged radially adjacent to the first disk carrier LT1. In a further embodiment, the first circumferential section UA1 and the second circumferential section UA2 and / or the third circumferential section UA3 of the wave spring WF can be arranged radially adjacent to the second disk carrier LT2.

[0039] In Fig. Figure 9 shows an embodiment of the multi-plate switching element LSE, in which the first circumferential section UA1 and / or the second circumferential section UA2 of the wave spring WF are arranged in a tangential direction adjacent to the first plate carrier LT1. In a further embodiment, the first circumferential section UA1 and / or the second circumferential section UA2 of the wave spring WF can be arranged in a tangential direction adjacent to the second plate carrier LT2.

[0040] In Fig. 10 shows a bearing assembly LA for a drive element AE of a motor vehicle for rotatably supporting a first component B1 relative to a second component B2. The bearing assembly LA comprises a bearing element LE designed as a floating bearing. The bearing assembly LA has at least one wave spring WF according to the invention. The wave spring WF is configured to preload the bearing element LE against the first component B1 or the second component B2 in the axial direction.

[0041] In Fig. 10a shows an embodiment of the bearing assembly LA in which the first circumferential section UA1 is arranged adjacent to the second component B2, wherein the second circumferential section UA2 and / or the third circumferential section UA3 of the wave spring WF can also be arranged adjacent to the second component B2 in the radial direction. In a further embodiment, the first circumferential section UA1 and the second circumferential section UA2 and / or the third circumferential section UA3 of the wave spring WF can be arranged adjacent to the first component B1 in the radial direction.

[0042] In Fig. 10b shows an embodiment of the bearing assembly LA in which the first circumferential section UA1 is arranged in a tangential direction against the second component B2, wherein the second circumferential section UA2 of the wave spring WF can also be arranged in a tangential direction against the second component B2. In a further embodiment, the first circumferential section UA1 and / or the second circumferential section UA2 of the wave spring WF can be arranged in a tangential direction against the second component B1.

[0043] In Fig. 11 shows a drive device AV for a motor vehicle, which includes a bearing arrangement LA with a bearing element LE designed as a loose bearing and with a wave spring WF according to the invention. Fig.11 shows an exemplary embodiment of the drive device AV comprising a plurality of torque-carrying drive device components. These include an electric drive unit consisting of an electric machine EM with a stator STA and a rotor ROT, a torque-carrying first component B1, and a torque-carrying third component B3. The bearing arrangement LA comprises the bearing element LE, which supports the torque-carrying drive device components in a second component B2. In the illustrated embodiment, the torque-carrying first component B1 is supported in the second component B2 via the bearing element LE, a second bearing element LE2, and a third bearing element LE3. Furthermore, a transmission stage ÜS is shown, which implements a torque transmission from the first component B1 to the third component B3.The third component B3 is supported by a fourth bearing element L4 and a fifth bearing element L5 in the second component B2. Reference symbol WF corrugated spring aW corrugation formed in the axial direction SE1 first butt end SE2 second butt end UA1 first circumferential section UA2 second circumferential section UA3 third circumferential section rE radial extension aW_1_2 corrugation formed in the axial direction at UA1 and UA2 WL_1_2 Wavelength at UA1 and UA2 WL_3 Wavelength at UA3 UA4 fourth circumferential section UA5 fifth circumferential section aW_4_5 corrugation formed in the axial direction on UA4 and UA5 WL_4_5 Wavelength at UA4 and UA5 rE1 first extension in radial direction rE2 second extension in radial direction rE3 third extension in radial direction aO1 axial opening LSE lamella switching element AV drive device LT1 first plate carrier LT2 second disc carrier LM1 first slats LM2 second slats LA bearing arrangement AE drive element B1 first component B2 second component B3 third component LE bearing element LE2 second bearing element LE3 third bearing element LE4 fourth bearing element LE5 fifth bearing element ÜS translation level EM electric machine STA Stator RED Rotor

Claims

[1] Multi-plate shift element (LSE) for a drive device of a motor vehicle, comprising a plurality of first plates (LM1) connected to a first plate carrier (LT1) and axially displaceable, and a plurality of second plates (LM2) connected to a second plate carrier (LT2) and axially displaceable, wherein the first plates (LM1) and the second plates (LM2) are arranged alternately in the axial direction, wherein the plates (LM1, LM2) can be brought into frictional engagement with one another, wherein a wave spring (WF) is arranged between each two first plates (LM1), wherein each wave spring (WF) is arranged so as to enclose one of the second plates (LM2) or is enclosed by one of the second plates (LM2), wherein at least one of the wave springs (WF) is constructed with a corrugation (aW) formed in the axial direction, wherein the wave spring (WF) is designed as an open wave spring with a first butt end (SE1) and a second butt end (SE2) is designed,wherein the wave spring (WF) has at least a first circumferential section (UA1), a second circumferential section (UA2) and a third circumferential section (UA3) in the circumferential direction, wherein the first circumferential section (UA1) comprises the first butt end (SE1), the second circumferential section (UA2) comprises the second butt end (SE2) and the third circumferential section (UA3) circumferentially connects the first and the second circumferential section (UA1, UA2) to one another, wherein the first and the second circumferential section (UA1, UA2), - a radial extension (rE) different from the third circumferential section (UA3) and / or - has a corrugation (aW_1_2) formed in the axial direction with a wavelength (WL_1_2) deviating from the third circumferential section (UA3) in the circumferential direction. [2] Lamellar switching element (LSE) according to claim 1, characterized bythat the third circumferential section (UA3) is interrupted by a fourth circumferential section (UA4) corrugated in the axial direction and a fifth circumferential section (UA5) corrugated in the axial direction. [3] Lamellar switching element (LSE) according to claim 2, characterized by that the fourth and the fifth circumferential section (UA4, UA5) have a corrugation (aW_4_5) formed in the axial direction with a wavelength (WL_4_5) that deviates from the third circumferential section (UA3) in the circumferential direction. [4] Lamellar switching element (LSE) according to one of claims 1 to 3, characterized bythat the first circumferential section (UA1) has a first extension in the radial direction (rE1), the second circumferential section (UA2) has a second extension in the radial direction (rE2) and the third circumferential section (UA3) has a third extension in the radial direction (rE3), wherein the first extension in the radial direction (rE1) on the first circumferential section (UA1) has an axial opening (aO1) arranged in the circumferential direction and the second extension in the radial direction (rE2) on the second circumferential section (UA2) has a smaller radial extension than the third extension in the radial direction (rE3) on the third circumferential section (UA3). [5] Lamellar switching element (LSE) according to one of claims 1 to 4, characterized by that at least parts of the radial extent of the first and second circumferential sections (UA1, UA2) extend in an overlapping manner in the circumferential direction. [6] Lamellar switching element (LSE) at least according to claim 4, characterized bythat the axial opening (aO1) on the first extension in the radial direction (rE1) on the first circumferential section (UA1) is formed so as to surround the second extension in the radial direction (rE2) on the second circumferential section (UA2) in the circumferential direction. [7] Lamellar switching element (LSE) according to one of claims 1 to 6, characterized by that the first and the second circumferential section (UA1, UA2) and / or the third circumferential section (UA3) of the wave spring (WF) is arranged in the radial direction on the first disk carrier (LT1) or on the second disk carrier (LT2). [8] Lamellar switching element (LSE) according to one of claims 1 to 6 or according to claim 7, characterized by that the first and / or the second circumferential section (UA1, UA2) of the wave spring (WF) is arranged in a tangential direction on the first disk carrier (LT1) or on the second disk carrier (LT2). [9] Bearing arrangement (LA) for a drive element (AE) of a motor vehicle for the rotatable mounting of a first component (B1) relative to a second component (B2), comprising a bearing element (LE) designed as a floating bearing, wherein the bearing arrangement (LA) has at least one wave spring (WF) which is designed to preload the bearing element (LE) against the first or the second component (B1, B2) in the axial direction, wherein at least one of the wave springs (WF) is constructed with a corrugation (aW) formed in the axial direction, wherein the wave spring (WF) is designed as an open wave spring with a first butt end (SE1) and a second butt end (SE2), wherein the wave spring (WF) has at least a first circumferential section (UA1), a second circumferential section (UA2) and a third circumferential section (UA3) in the circumferential direction, wherein the first circumferential section (UA1) comprises the first butt end (SE1),the second circumferential section (UA2) comprises the second butt end (SE2) and the third circumferential section (UA3) connects the first and the second circumferential section (UA1, UA2) to one another in a circumferential manner, wherein the first and the second circumferential section (UA1, UA2), - a radial extension (rE) different from the third circumferential section (UA3) and / or - has a corrugation (aW_1_2) formed in the axial direction with a wavelength (WL_1_2) deviating from the third circumferential section (UA3) in the circumferential direction. [10] Bearing arrangement (LA) according to claim 9, characterized by that the first and the second circumferential section (UA1, UA2) and / or the third circumferential section (UA3) of the wave spring (WF) is arranged in radial direction adjacent to the first component (B1) or the second component (B2). [11] Bearing arrangement (LA) according to claim 9 or 10, characterized bythat the first and / or the second circumferential section (UA1, UA2) of the wave spring (WF) is arranged in a tangential direction on the first component (B1) or on the second component (B2). [12] Drive device (AV) for a motor vehicle, characterized by a bearing arrangement (LA) according to one of claims 9 to 11.

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