阅读说明：本技术 用于使两个轴段振动解耦的装置 (Device for vibration decoupling of two shaft sections ) 是由 斯蒂芬·叶雷伊 沃尔夫冈·小奥索夫 多门·施塔德勒 约阿西姆·海勒 于 2020-04-09 设计创作，主要内容包括：用于使两个轴段、特别是使车辆的驱动轴的两个轴段振动解耦的装置,该装置具有：至少一个芯,该芯具有带有径向突出区部的径向外轮廓,并且可连接至轴段之一；外套,其具有至少一个接收区部,至少一个接收区部具有带有径向接收区域的径向内轮廓,外套具有用于连接至轴段之一的连接区部；其中所述至少一个芯的径向外轮廓和所述至少一个接收区部的径向内轮廓具有相互互补的设计；其中,所述至少一个芯容纳在外套的所述至少一个接收区部中,以及其中,至少一个第一阻尼层在径向方向上位于至少一个接收区部的径向内轮廓与芯的径向外轮廓之间,以及其中,至少一个第二阻尼层在轴向上在所述至少一个芯的第一端面表面与所述至少一个接收区部之间延伸。(Device for the vibration decoupling of two shaft sections, in particular of two shaft sections of a drive shaft of a vehicle, having: at least one core having a radially outer profile with a radially protruding region and being connectable to one of the shaft segments; an outer sleeve having at least one receiving area portion having a radially inner contour with a radial receiving area, the outer sleeve having a connecting area portion for connecting to one of the shaft sections; wherein the radially outer contour of the at least one core and the radially inner contour of the at least one receiving area have mutually complementary designs; wherein the at least one core is accommodated in the at least one receiving area of the outer sleeve, and wherein at least one first damping layer is located in the radial direction between a radially inner contour of the at least one receiving area and a radially outer contour of the core, and wherein at least one second damping layer extends in the axial direction between a first end face surface of the at least one core and the at least one receiving area.)

1. Device (10) for the vibration decoupling of two shaft sections, in particular of two shaft sections of a drive shaft of a vehicle, having:

at least one core (20) having a radially outer profile (44) with a radially protruding region (60) and being connectable to one of the shaft segments,

an outer sleeve (12) having at least one receiving section (14), the at least one receiving section (14) having a radially inner contour (46) with a radial receiving area (62), the outer sleeve having a connecting section (28) for connecting to one of the shaft sections,

wherein a radially outer contour (44) of the at least one core (20) and a radially inner contour (46) of the at least one receiving area portion (14) have mutually complementary structures,

wherein the at least one core (20) is accommodated in at least one receiving area (14) of the casing (12) and

wherein at least one first damping layer (42) is located in the radial direction between a radially inner contour (46) of the at least one receiving area portion (14) and a radially outer contour (44) of the core (20), and

wherein at least one second damping layer (56) extends in the axial direction between the first end face surface (36) of the at least one core (20) and the at least one receiving section (14).

2. The device (10) according to claim 1,

wherein the radially inner contour (46) of at least the at least one receiving section (14) has a conical design at least in one section (46 b).

3. The device (10) according to claim 1 or 2,

wherein the radially inner contour (46) of the at least one receiving section (14) has a section (46a) in which the radially inner contour (46) extends at least substantially parallel to the longitudinal axis (L).

4. The device (10) according to one of claims 1 to 3,

wherein the radially inner contour (46) of the at least one receiving area section (14) has at least one step (54).

5. The device (10) according to one of claims 1 to 4,

wherein the at least one first damping layer (42) has at least one section (50) in which the radial thickness (d) of the at least one first damping layer (42) varies.

6. The device (10) according to one of claims 1 to 5,

wherein the at least one first damping layer (42) has at least one section (48) in which the radial thickness (d) thereof remains constant.

7. The device (10) according to one of claims 1 to 6,

wherein the at least one first damping layer (42) has at least one step (52) where the radial thickness (d) of the at least one first damping layer (42) changes abruptly.

8. The device (10) according to one of claims 1 to 7,

wherein the device (10) has a third damping layer (24) extending along a second end face surface (38) of the at least one core (20).

9. The device (10) according to one of claims 1 to 8,

wherein the device (10) has at least one closure element (16) which holds the at least one core (20) in the receiving region (14) of the casing (12).

10. The device (10) according to one of claims 1 to 9,

wherein at least the at least one first damping layer (42) and the at least one second damping layer (56) are fixedly mounted on the at least one core (20).

11. The device (10) according to one of claims 1 to 10,

wherein the at least one core (20) and/or the connection zone portion (28) of the outer sleeve (12) has at least one opening (22, 32) for receiving a shaft section.

12. The device (10) according to claim 11,

wherein the at least one opening (22) in the at least one core (20) and/or the at least one opening (22, 32) in the outer jacket (12) has at least one toothed section (22b, 32b) with teeth (30, 34).

13. The device (10) according to one of claims 1 to 12,

wherein the at least one core (20) and/or the connection region (28) of the outer jacket (12) is designed with a shaft section.

14. Device (10) according to one of claims 1 to 13 for use with a drive shaft of a vehicle, in particular a front-wheel drive vehicle or a rear-wheel drive vehicle and/or a vehicle having an electric drive.

15. Drive shaft for a vehicle, in particular a front-wheel drive vehicle and/or a vehicle having an electric drive, having at least one device (10) according to one of claims 1 to 13.

16. The drive shaft of claim 15,

wherein the at least one drive shaft has at least one articulated joint, the device (10) being at a distance from the at least one articulated joint, or the device (10) being integrated into the at least one articulated joint.

17. Articulated joint with a device (10) according to one of claims 1 to 13,

wherein the device (10) is integrated into the articulated joint.

Technical Field

The invention relates to a device for decoupling the vibrations of two shaft sections. In particular, the invention relates to a device for the vibration decoupling of two shaft sections of a drive shaft or sideshaft (side draft) of a vehicle.

Background

A device of this type, which is disclosed in german unexamined patent application DE 102012009942 a1, is known from the prior art. German unexamined patent application DE 102012009942 a1 discloses a drive train having a differential, two drive wheels and a cardan shaft with an inner joint and/or an outer joint between the differential and one of the drive wheels. The inner joint and/or the outer joint has a joint housing for transmitting a torque over a solid bending angle (solid bending angle) between a drive side and an output side of the joint shaft. The joint housing has a first housing part and a second housing part coupled together, the damping element being located at a coupling point between the first housing part and the second housing part.

Disclosure of Invention

The object of the invention is to provide a device for the vibration decoupling of two shaft sections, by means of which vibrations can be reduced.

This object is achieved by a device for vibration decoupling having the features of claim 1.

Further embodiments are set forth in the dependent claims.

The device according to the invention for the vibration decoupling of two shaft sections comprises: at least one core having a radially outer contour with a radially protruding region and being connectable to one of the shaft segments, and an outer sleeve having at least one receiving region with a radially inner contour having a radial receiving area. The outer sleeve has a connection section for connection to one of the shaft segments. The radially outer contour of the at least one core and the radially inner contour of the at least one receiving area have mutually complementary designs. The at least one core is received in the at least one receiving area. At least one first damping layer is located in the radial direction between the radially inner contour of the receiving area and the radially outer contour of the core. At least one second damping layer extends in the axial direction between the first end face surface of the core and the receiving section of the outer jacket.

By using the device according to the invention, torque can be transmitted between the two shaft sections. The device according to the invention brings about a vibration decoupling of the two shaft portions from one another. The device according to the invention may provide vibration decoupling for bending vibrations as well as rotational vibrations. This is achieved in particular by the first damping layer extending in the radial direction between the outer contour of the core and the inner contour of the receiving region of the outer sleeve. In other words, the first damping layer may provide vibration decoupling in the axial direction and/or the radial direction. A second damping layer arranged between the first end surface of the core and the receiving section of the jacket is used for pretensioning in the axial direction. In addition, the second damping layer can contribute to the radial pretensioning of the first damping layer. Thus, the device according to the invention can provide both torsional and translational decoupling of the two shaft sections.

The inner contour of at least one receiving section of the jacket may have a conical design at least in one section. The receiving section of the casing may have a conical design at least in one section; that is, the inner contour as well as the outer contour may have a conical design. The inner contour of the receiving section may conically expand in the direction of the open end of the receiving section. The receiving section may have a bottom. The bottom portion may form an end of the receiving section opposite the open end of the receiving section. The second damping layer may extend between the first end surface of the core and the bottom of the receiving section in the axial direction.

The inner contour of the at least one receiving section may have a section in which the inner contour extends at least substantially parallel to the longitudinal axis of the jacket. The parallel section of the inner contour may extend from the bottom of the receiving section and merge into a conical section. The inner contour of the at least one receiving area part may have at least one step. The step may have a surface extending in a radial direction or at an angle to the longitudinal axis of the outer jacket. The step may form a transition between a section of the inner contour extending parallel to the longitudinal axis and a tapered section of the inner contour.

The at least one first damping layer may have at least one section in which the radial thickness of the at least one first damping layer varies over the axial extension of the at least one damping layer. The radial thickness of the at least one first damping layer may vary along at least one section of the axial extension of the at least one core. The change in radial thickness of the first damping layer may occur continuously along its axial extension.

The at least one first damping layer may have at least one section in which its radial thickness remains constant. At least one section with a constant radial thickness and at least one section with a varying radial thickness may adjoin each other in the axial direction (adjoin). The at least one first damping layer may have at least one step where a radial thickness of the at least one damping layer abruptly changes. The at least one step of the first damping layer may form a transition between a section with a constant radial thickness and a section with a varying radial thickness. The first damping layer may have a relatively small radial thickness in a section having a constant radial thickness. The radial thickness of the damping layer may increase abruptly at said at least one step, and then it increases substantially continuously in the region of increasing radial thickness. Multistage stiffness (multistripeness) of the device may be achieved by different radial thicknesses of the first damping layer. This may be particularly applicable to stiffness in the torsional direction. Due to the different radial thicknesses, a device stiffness characteristic with soft zero crossings (soft zero crossing) and gradually increasing stiffness can be achieved.

The device may have at least one third damping layer extending over the second end face surface of the at least one core. The third damping layer may be connected to the second damping layer. The first damping layer and/or the second damping layer may have a substantially constant axial thickness. In addition, the second damping layer may be likewise connected to the second damping layer. The first, second and third damping layers together may substantially completely surround the at least one core.

The device may have at least one closure element which holds the at least one core in the receiving region of the casing. The at least first damping layer and the second damping layer can be axially prestressed via the at least one closing element. Thus, the setting behavior (setting behavior) of the elastic material of the damping layer can be reduced or compensated. This may result in a longer device lifetime. In addition, the radial stiffness (rigidity) of the device can be adjusted by axial pretensioning of the damping layer. Thus, the device may have a relatively high radial stiffness. The third damping layer may extend in the axial direction between the second end face surface and the at least one closing element.

The at least one core may be completely accommodated in the at least one receiving area. The entire axial extension of the at least one core may be located within the at least one receiving area portion of the casing. In other words, the two axial end face surfaces of the core are located within the axial extension of the receiving section. The at least one core having a first end surface may be supported on the bottom of the receiving section by the second damping layer.

At least the at least one first damping layer and the at least one second damping layer may be fixedly mounted on the at least one core. The first damping layer may be fixedly mounted on the radially outer profile of the core. The second damping layer may be fixedly mounted on the first end surface of the core. A third damping layer may be fixedly mounted on the second end face surface. The damping layer may be vulcanized to the at least one core. The at least one core together with the damping layer may form one unit. The unit may be inserted into the receiving area of the casing. The unit formed by the core and the damping layer can be held in the receiving region by at least one closing element, wherein the at least one closing element can contribute to the axial pretensioning (pretensioning) of the damping layer.

The at least one core may have at least one opening for receiving a shaft segment. The jacket may likewise have an opening for receiving the shaft section. In either case, one of the shaft segments may be inserted into the opening of the core and the opening of the outer sleeve. At least one opening in the at least one core and/or at least one opening in the outer cover may have at least one section with teeth. A torque transmitting connection between the shaft segments and the core or jacket may be established through the teeth of the openings. For this purpose, the shaft section can have corresponding external toothing. Alternatively, the shaft segment may be integrally formed on the at least one core, or the at least one core may have a one-piece design with the shaft segment. The same concept applies to the connection region. The shaft section may also be integrally formed on the connecting section, or the connecting section may have a one-piece design with the shaft section.

The device may be designed as a drive shaft for a vehicle, in particular a front-wheel drive or rear-wheel drive vehicle and/or a vehicle having an electric drive.

The invention also relates to a drive shaft for a vehicle, in particular a front-wheel drive vehicle and/or a vehicle having an electric drive, having at least one device. The two shaft sections of the drive shaft can be connected to one another by means of the device for torque transmission, but also can be decoupled from one another in terms of vibration. The drive shaft may transfer torque from the transmission to the driven wheels of the vehicle. The drive shaft may have at least one articulated joint. The drive shaft may have an articulation joint on the wheel side and an articulation joint on the transmission side. The device for vibration decoupling may be located between the wheel-side joint and the transmission-side joint, wherein the device may be connected to the joint via a shaft section. However, the means for vibration decoupling may also be combined with an articulated joint. For example, the means for vibration decoupling may be integrated into the articulated joint. Accordingly, the articulated joint can form a shaft section which is connected to another shaft section by means for vibration decoupling.

The invention also relates to an articulated joint with a device for vibration decoupling, which is integrated into the articulated joint. Such an articulation joint may be, for example, a homokinetic (homokinetic) articulation joint.

Drawings

Two embodiments of the invention are described below with reference to the drawings. In the figure:

fig. 1 shows a perspective view of a device for vibration decoupling according to a first embodiment.

Fig. 2 shows a top view of the device according to the first embodiment.

Figure 3 shows a cross-sectional view of section line III-III in figure 2.

Fig. 4 shows a side view of the device according to the first embodiment.

Fig. 5 shows a cross-sectional view along the section line V-V of fig. 4.

Fig. 6 shows a top view of the core and the damping layer mounted thereon of the device according to fig. 1 to 5.

Fig. 7 shows a cross-sectional view along the section line VII-VII in fig. 6.

Fig. 8 shows a side view of the device according to the first embodiment.

Fig. 9 shows a sectional view along the section line IX-IX in fig. 8.

Fig. 10 shows a perspective view of a device for vibration decoupling according to a second embodiment.

And

fig. 11 shows a top view of the device according to fig. 10.

Detailed Description

Fig. 1 shows a perspective view of a device 10 for vibration decoupling. The device 10 has an outer cover 12. The casing 12 has a receiving area 14 which can be closed by a closure element 16. The closure element 16 has an opening 18. A core 20 is visible in the opening 18, the core 20 being accommodated in the receiving section 14. The core 20 has an opening 22. Between the core 20 and the closure element 16 a damping layer 24 is visible, which extends to the edge of the opening 22 in the core 20. The receiving section 14 or the edge 26 of the outer sleeve 12 may be deformed to secure the closure element 16 to the outer sleeve 12.

The opening 22 in the core 20 may be used to receive a shaft segment that is not shown in fig. 1. In addition to the receiving section 14, the outer sleeve 12 also has a connecting section 28, which connecting section 28 adjoins the receiving section 14 and can be used to connect the outer sleeve 12 to a shaft section, not shown. The connecting section 28 has a substantially tubular design.

The receiving area 14 of the outer jacket 12 has an undulating profile, except for the edge 26. The core 20 accommodated in the receiving section 14 has a corresponding outer contour, so that a torque can be transmitted by means of the corresponding contours of the core 20 and of the outer jacket 12.

Fig. 2 shows a top view of the device 10. The core 20 is received in the receiving section 14 of the outer cover 12. The opening 22 in the core 20 has teeth 30 that project radially inward. A damping layer 24 is visible between the closure element 16 and the core 20. The closure element 16 is held on the outer sleeve 12 by the deformed edge 26. The contours of the receiving section 14 and the core 16 of the outer cover 12 are shown in dashed lines in fig. 2. These profiles of the receiving section 14 and the core 16 are discussed in more detail below. According to this embodiment, the edge 26 of the outer jacket 12 has a circular cross-section. Thus, the rim 26 does not have the contour of the core 20 and the rest of the receiving section 14 indicated by the dashed line. The closing element 16 has a disc-shaped design.

Fig. 3 shows a cross-sectional view along the section line III-III in fig. 2. Figure 3 shows the outer cover 12 and the core 20. The core 20 is received in the receiving section 14 of the outer cover 12. In addition to the receiving section 14, the outer cover 12 also has a connecting section 28. The connecting section 28 has a substantially tubular design. The connecting section 28 has an opening 32 which, in the unloaded state of the device 10 shown in fig. 3, is coaxial with the opening 22 in the core 20. The opening 32 has two sections: section 32a and section 32b provided with teeth 34. Section 32a extends between the end face surface of connecting section 28 and tooth 34. The section 32a thus forms an axial end section of the opening 32. The diameter of the opening 32 in section 32a is slightly larger than the diameter of section 32b with teeth 34. In this way, the insertion of the shaft segment into the opening 32 and its engagement with the teeth 34 of the shaft segment can be simplified.

The core 20 is completely accommodated in the receiving section 14 such that the core is located within the receiving section 14 over the entire axial extension of the core 20. The core 20 has two end face surfaces 36 and 38. At the transition between the connecting section 28 and the receiving section 14, the cross section of the outer jacket 12 expands in the radial direction, so that a bottom 40 of the receiving section 14 is formed. The first end surface 36 faces a bottom 40 of the receiving section 14. The second end surface 38 faces the closure element 16 and is therefore located in the region of the axial end of the outer jacket 12 or the receiving section 14.

The opening 22 in the core 20 likewise has two sections 22a and 22 b. The tooth portion 30b is formed in the section 22 b. Section 22a extends between end surface 38 and section 22b with teeth 30. The diameter of section 22a is slightly larger than the diameter of section 22b with teeth 30. In this way, the insertion of the shaft segment (not shown) can be simplified.

A first damping layer 42 is disposed radially between the core 20 and the outer jacket 12. The first damping layer 42 extends between an outer profile 46 of the core 20 and an inner profile 44 of the outer cover 12. The thickness of the first damping layer 42 in the radial direction varies along the axial extension thereof. The first damping layer 42 has a first section 48 and a second section 50 adjoining each other in the axial direction. The first damping layer 42 is provided with a step 52, which step 52 forms a transition between the first section 48 and the second section 50. In the region of the step 52 of the first damping layer, a step or shoulder 54 is similarly formed on the inner contour 42 of the outer jacket 12. The first section 48 of the first damping layer 42 extends between the first end surface 36 of the core 20 and a step 52 of the damping layer 42 or a step 54 at the outer cover 12. The second section 50 layer of the first damping layer 42 extends from the steps 52 and 54 substantially to the second face surface 38 of the core 20. The first damping layer 42 has a substantially constant radial thickness d in the first region 48. The radial thickness d of the first damping layer 42 abruptly increases at the step 52. Starting from the step 52, the radial thickness d of the first damping layer 42 increases substantially continuously in the direction of the second end face surface 38 of the core 20.

The inner contour 44 of the outer cover 12 has a design corresponding to the first damping layer 42. The inner contour 42 of the receiving section 14 extends from the bottom 40 initially in a section 46a substantially parallel to the longitudinal axis M of the device 10. The inner profile 42 here has a substantially constant distance from the outer profile 44 of the core 20. At step 54, the distance from the core 20 abruptly increases. Starting from the step 54, the distance from the core 20 increases substantially continuously in the section 46b, continuing in the direction of the closure element 16. Thus, starting from the step 54, the receiving section 14 expands conically.

The second damping layer 56 extends between the first end surface 36 of the core 20 and the base 40 of the receiving section 14. At least in part, the base 40 and the first end surface 36 extend substantially parallel to each other. The second damping layer 56 has a substantially constant thickness in the axial direction. The thickness of the second damping layer 56 in the axial direction is greater than the radial thickness of the first damping layer 42 in the section 48, but less than the radial thickness of the first damping layer 42 in the section 50.

The damping layer 24 visible in fig. 1 and 2 forms a third damping layer extending along the second end face surface 38 of the core 20. The third damping layer 24 extends in a portion between the second end face surface 38 of the core 20 and the closure element 16. The axial thickness of the third damping layer 24 is greater than the axial thickness of the second damping layer 56.

The end face surfaces 36 and 38 and the outer contour 44 of the core 20 are substantially completely covered by the elastomeric material of the elastomeric damping layers 24, 42 and 56. The first, second, and third damping layers 42, 56, 24 may be of unitary design and may be fixedly attached to the core 20.

According to this embodiment, the edge 26 of the receiving section 14 has a circular cross-section. The closure element 16 has a disc-shaped design and can be fixed to the outer jacket 12 by deforming the edge 26. The closing element 16 serves to axially pretension the damping layers 24, 42 and 56.

Fig. 4 shows a side view of the device 10. The outer cover 12 has a receiving section 14 for receiving the core 20 and a connecting section 28. The edge 26 is adjoined by a section 58 of the receiving section 14 having an undulating outer contour. The section 58 with the wavy outer contour is adjoined by the connecting section 28. Thus, the section 58 of the receiving section 14 with the wavy outer contour extends between the connecting section 28 and the edge 26 of the receiving section 14.

Fig. 5 shows a cross-sectional view along the section line V-V in fig. 4. In the sectional view according to fig. 5, the contour of the receiving section 14 of the outer jacket 12 and the core 20 can be seen. The outer contour of the receiving section 14 in the section 58 (see fig. 4) has a design corresponding to the inner contour 46 of the receiving section 14. The inner contour 46 of the receiving section 14 and the outer contour 44 of the core 20 have a mutually complementary design. The core 20 has a radial projection 60 extending radially outward. Each protrusion 60 is formed of two wall surface sections 60a and 60b connected to each other by a curved section 60 c. The projection 60 is at least partially received in a radially outwardly extending receiving area 62 of the inner contour 46 of the receiving section 14. The receiving area 62 is formed by two walls 62a and 62b connected to each other by a curved section 62 c. The receiving areas 62 of the receiving area 14, i.e. the walls 62a and 62b of two adjacent receiving areas 62, are connected to each other via a curved area 64. Between the projections 62, the core 20 has curved surface sections 66 connecting the projections 62 to each other. The outer contour 44 of the core 20 and the inner contour 46 of the receiving section 14 have substantially the same or similar curvatures (curvatures) in the section 64 and the surface section 66. For clarity, only one section 64 and one section 66 are provided with reference numerals in fig. 5.

Due to the above-described contours of the core 20 and the receiving section 14, a space is formed between an outer contour 44 of the core 20 and an inner contour 46 of the receiving section 14, in which space the first damping layer 42 extends (see fig. 3). During torque transmission, the core 20 and outer jacket 12 may twist relative to one another while the damping layer 42 compresses. The protrusions 60 of the core 20 may approach the receiving areas 62 of the outer contour 64 of the receiving area portion 14 while the damping layer 42 is compressed. In other words, one of the wall surface sections 60a and 60b of the projection 60 may be proximate to the wall 62a or 62b of one of the receiving areas 62 of the receiving section 14, thereby compressing the damping layer 42 between these two portions. The greater the torque to be transmitted, the closer the projection 60 is to the wall 62a or 62b of the receiving area 62. The approach of the projection 60 towards one of the walls 62a or 62b takes place with a corresponding torque to be transmitted until the damping layer 42 can no longer be compressed. In this state, the torque is more or less directly transmitted from the projection 60 to the receiving section 14, or vice versa.

Fig. 6 shows a top view of the core 20 and the damping layers 24, 42 and 56 attached thereto. The damping layers 24, 42 and 56 may be vulcanized to the core 20. The first damping layer 42 extends along the outer profile of the core 12 such that the projections 60 and the areas 66 between the projections 60 are covered by the first damping layer 42. The first end surface 36 is provided in sections with the second damping layer 24, the second damping layer 24 extending to the edges of the opening 22 in the core 20. The third damping layer 24 has a disc-shaped design in that it extends into the circular edge 26 of the outer jacket 12 (see fig. 2 and 3).

Fig. 7 shows a cross-sectional view along the section line VII-VII in fig. 6. The damping layers 24, 42 and 56 are vulcanized to the core 20. According to this embodiment, the damping layers 24, 42 and 56 have a one-piece design. The first damping layer 42 extends along an outer contour or surface 44 of the core 20. The first damping layer 42 has two sections 48 and 50 which are connected to one another by a step 52 formed on the damping layer 42. In the section 48, the first damping layer 42 has a substantially constant thickness d, which increases abruptly at the step 52. Starting from the step 52, the radial thickness d of the first damping layer 42 increases substantially continuously towards the third damping layer 24 or towards the second end face surface 38 of the core 20. The first damping layer 42 is connected to the third damping layer 24 by a section 50 thereof. The section 48 of the first damping layer 42 merges into the second damping layer 56, and the second damping layer 56 extends along the first end surface 36 of the core 12. The second damping layer 56 substantially completely covers the first end surface 36. The third damping layer 56 extends along the second end face surface 38, and partially protrudes in the radial direction beyond the second end face surface 38 to be accommodated in the edge region 26 having a circular cross section (see fig. 2 and 3).

The unit formed by the damping layers 24, 42 and 56 and the core 20 may be inserted into the receiving section 14 of the outer cover 12. The damping layers 42 and 56 then directly contact the receiving area 14. However, the damping layers 42 and 56 are not attached to the receiving section. The damping layers 24, 42 and 56 can be prestressed in the axial direction by the closing element 16. The axial pretension can be adjusted by the positioning or fixing of the closure element 16 on the receiving section 14.

Fig. 8 shows a side view of the device 10, corresponding to the side view according to fig. 4. Fig. 9 shows a sectional view along the section line IX-IX in fig. 8. In fig. 8 and 9, the outer cover 12 and the core 20 are shown without a damping layer, so that the contours 44 and 46 of the receiving section 14 and the core 20 can be discerned. The core 20 has radial projections 60 that extend into radially outwardly extending receiving areas 62 of the outer jacket 12. The inner contour 46 of the receiving section 14 and the outer contour 44 of the core 20 therefore have mutually complementary designs.

Fig. 10 shows a perspective view of a device 10 according to a second embodiment. The device 10 has an outer cover 12 and a core 20. The outer cover 12 has a receiving area portion 14 and a connecting area portion 28. The core 20 is accommodated in the receiving section 14. The receiving section 14 is closed by a closure element 16. The closure element 16 and the core 20 have an opening 18 and an opening 22, respectively. A damping layer 24 can be seen between the closure element 16 and the core 20.

The only difference between the device 10 according to the first embodiment and the device 10 according to the second embodiment as shown in fig. 10 is that the edge 26 of the receiving section 14 according to the second embodiment no longer has a circular cross section (see fig. 1 to 3), but is provided with the same wavy profile as the remaining receiving section 14. The closing element 16 is therefore likewise provided with a contour corresponding to the contour of the receiving section 14.

Fig. 11 shows a top view of the device 10. The core 20 is received in the receiving section 14 of the outer cover 12. The core 20 has an opening 22 with teeth 30 projecting in the radial direction. A damping layer 24 is visible between the closure element 16 and the core 20. The closure element 16 is retained on the outer sleeve 12 by the deformable rim 26. As shown in fig. 11, the receiving section 14 has a continuous profile. Thus, the contour of the closure element 16 matches the contour of the receiving section 14 to allow it to be fastened to the receiving section 14.

The invention provides a device 10 for vibration decoupling of a drive shaft or side shaft of a vehicle. By means of which bending and rotational vibrations of the drive shaft of the vehicle can be reduced. The core 20, along with one or more damping layers 24, 42 and 56, may be inserted into the outer casing. The closing element 16 can axially pretension the damping layers 24, 42 and 56, whereby the service life of the device 10 can be extended and the rigidity (rigidness) of the device 10 can be increased. The multi-stage stiffness characteristic may be achieved by different thicknesses of the damping layers 24, 42 and 56, and in particular by different radial thicknesses of the first damping layer 42. The device 10 may thus have a progressive stiffness.