Connecting assembly between air spring and air spring bracket

Abstract

The invention relates to a connecting assembly (15) between an air spring (4) and an air spring support (3), wherein the connecting assembly (15) is removable without tools. The rolling piston (6) of the air spring (4) has a recess (19) in its bottom side (9) facing the air spring support (3). A centering cone (16) is fastened to the air spring support (3) and fits into the recess (19) on the bottom side of the rolling piston (6). The centering cone (16) is completely overlapped by the rolling piston (6). The centering cone (16) and the rolling piston (6) have a common center axis (11), which is also the center axis (11) of the air spring (4). The invention is characterized in that the rolling piston (6) and the centering cone (16) are made of plastic and the rolling piston (6) is supported directly on the centering cone (16) and directly on the air spring support (3) in the direction of the center axis (11).

Description

Technical Field

[0001] The invention relates to a connection assembly between an air spring and an air spring support according to the preamble of claim 1 . Background Art

[0002] The prior art already knows chassis assemblies with rigid axles equipped with air springs, which are supported on the vehicle frame via an air spring mount on each vehicle side and a total of two or four air springs. The air spring mounts are typically connected directly to the rigid axles, and the air springs are arranged in the vehicle's vertical direction between the air spring mounts and the longitudinal beams of the vehicle frame. The air springs are often connected to the correspondingly provided air spring mounts via threaded connections. Air springs as described above are also well known and essentially comprise a cover, a rolling piston, and a rolling bellows clamped airtightly therebetween. The cover, rolling piston, and rolling bellows delimit a pressure chamber at an operating pressure of, for example, 10 bar. When the air springs are elastically compressed, the rolling bellows rolls on the outer surface of the rolling piston, forming rolling folds. The rolling piston is also known as a plunger.

[0003] Document DE 42 03 372 C1 discloses a connection assembly between an air spring and an air spring support that can be disassembled without tools. The rolling piston of the air spring has a recess in its bottom side facing the air spring support (referred to as the underside). A centering cone is fastened to the air spring support, fitting into the recess on the bottom side of the rolling piston and completely overlapped by the rolling piston. The centering cone and the rolling piston share a common center axis, which also serves as the center axis of the air spring. The rolling piston and the centering cone are separate components that engage with each other during normal vehicle operation. However, during crane loading and rail loading, the rolling piston and the centering cone can move away from each other. During normal vehicle operation, the rolling piston is supported on a separate base plate that is threaded to the air spring support, in a manner that forms a circular line contact. The rolling piston and the air spring support are spaced apart from each other by the base plate. The centering cone has the same outer diameter as the rolling piston. The outer surface of the centering cone, which is designed in the manner of the outer surface of a truncated cone, is free during normal driving and has no load-bearing function. A stop buffer is fastened to the upper side of the rolling piston, opposite the bottom side of the rolling piston, and rests against the inner side of the air spring cover when the air spring is exhausted. Summary of the Invention

[0004] The object of the present invention is to provide an alternative embodiment of the connection assembly between an air spring and an air spring support.

[0005] According to the invention, this object is achieved by a connecting assembly of the generic type which additionally has the features of the characterizing part of claim 1 .

[0006] Preferred embodiments and developments are the subject matter of the dependent claims and the following description. Further features and details of the invention are apparent from the drawings.

[0007] The present invention therefore provides a connection assembly between an air spring and an air spring support, wherein the connection assembly is removable without tools. The rolling piston of the air spring has a recess in its underside facing the air spring support. A centering cone is fastened to the air spring support and fits into the recess on the underside of the rolling piston. The rolling piston completely overlaps the centering cone. The centering cone and the rolling piston share a common center axis, which also serves as the center axis of the air spring.

[0008] According to the present invention, the rolling piston and the centering cone are made of plastic. Simultaneously, the rolling piston is not only directly supported on the centering cone but also directly supported on the air spring support in a surface-to-surface manner in the direction of the central axis.

[0009] By supporting the rolling piston in surface contact on two components—the centering cone and the air spring support—the force component to be transmitted by the connecting assembly in the direction of the center axis in the installed state is distributed between these two components. By supporting the rolling piston in surface contact on both components, the contact surface available for force transmission along the center axis is also increased. This keeps the surface pressure at the common contact surface of the rolling piston, centering cone, and air spring support relatively low, thus enabling the use of plastic components. Direct, surface-contact support of the rolling piston on both the centering cone and the air spring support is geometrically overdetermined and practically impossible with a nearly inflexible metal rolling piston and a similarly nearly inflexible metal centering cone. This is due to the fact that, due to tolerances, the manufacturing costs for achieving direct, surface-contact support of the metal rolling piston, centering cone, and air spring support can only be met through disproportionately high processing costs.

[0010] Because the rolling piston and centering cone are made of plastic, the connecting assembly has a flexibility that compensates for tolerances. This flexibility allows for direct surface contact of the rolling piston not only on the centering cone but also on the air spring support. Furthermore, the use of a rolling piston and a centering cone made of plastic offers a weight advantage compared to the use of metal components. A tool-free removable connecting assembly is understood to mean one that can be disassembled by hand without the aid of auxiliary tools (e.g., a wrench).

[0011] In particular, the rolling piston is constructed in one piece so as to be completely assembled. In particular, the rolling piston is made of thermoplastic plastic and is manufactured using the injection molding method. In particular, the centering cone is a component of the centering pin. In particular, the centering cone is designed in the shape of a truncated cone. In particular, the rolling piston is supported in the direction of the central axis on the conical cover surface or the truncated cone cover surface of the centering cone. In particular, the bottom side of the rolling piston is identical to the bottom side of the air spring. In particular, the air spring has a pressure chamber that extends into the rolling piston and at the same time extends in the direction of the central axis substantially over the entire length of the rolling piston. By extending the pressure chamber into the rolling piston, a relatively large pressure chamber is created in the air spring as a whole, which is beneficial to the elastic comfort of the air spring.

[0012] Advantageously, the recess on the bottom side of the rolling piston is designed as a conical dome that is rotationally symmetrical with respect to the center axis of the air spring, into which the centering cone engages with a positive fit and simultaneously with surface contact. In particular, the dome is supported on the centering cone by forming a contact surface that is designed similarly to the outer surface of a truncated cone. This contact surface, designed similarly to the outer surface of a truncated cone, allows the transmission of radial forces acting perpendicularly to the center axis in any direction, as well as axial forces acting in the direction of the center axis.

[0013] Advantageously, the dome is designed to widen conically toward the bottom side of the rolling piston and has a diameter on the bottom side that is less than half the outer diameter of the rolling piston. Advantageously, the dome has a diameter on the bottom side, i.e., at the transition from the dome to the bottom side, that is substantially one-third of the outer diameter of the rolling piston.

[0014] Preferably, the pressure chamber of the air spring is separated from the air spring support only by the annular wall of the rolling piston, wherein the annular wall is acted upon by the operating pressure from the pressure chamber side during operation. The statement that the pressure chamber of the air spring is separated from the air spring support only by the annular wall of the rolling piston should mean that the annular wall of the rolling piston rests directly and flatly on the air spring support, i.e., without an air gap. In particular, the annular wall of the rolling piston rests on the air spring support, forming an annular contact surface. In particular, the annular wall of the rolling piston also serves as the wall of the pressure chamber. Since the annular wall also serves as the wall of the pressure chamber, the operating pressure supports the annular wall from the inside, while the air spring is supported on the air spring support by this supporting force. Therefore, the wall thickness of the annular wall can be designed to be smaller than in the absence of internal support caused by the operating pressure. It is understood that the annular wall is designed to be airtight.

[0015] Advantageously, the rolling piston has an annular wall portion that extends perpendicularly to the center axis of the air spring and is supported directly and in contact with the air spring support via its surface. In particular, the annular wall portion is designed to be airtight. In particular, the rolling piston and the air spring support form a common contact surface that is designed as an annular surface.

[0016] Advantageously, the rolling piston has an annular, airtight intermediate wall that surrounds the annular wall portion on the bottom side of the rolling piston and is simultaneously arranged concentrically with and surrounded by the annular outer wall of the rolling piston. The airtightness of the intermediate wall is advantageous so that the rolling piston can be cost-effectively manufactured in a single step, allowing for complete assembly using an injection molding process. When installed in a motor vehicle, the rolling piston bears a portion of the mass of the vehicle structure. Most of this mass is transferred to the air spring support via the intermediate wall. In particular, the intermediate wall is circumferentially closed and rotationally symmetrical.

[0017] Preferably, the substantially hollow-cylindrical intermediate chamber is open toward the bottom side, the intermediate chamber being arranged between the intermediate wall and the outer wall. This is another prerequisite for the cost-effective assembly of the rolling piston in one operation using an injection molding method.

[0018] Advantageously, the centering cone has a cone angle of less than 45 degrees, preferably approximately 30 degrees. Due to the relatively narrow cone angle, the centering cone is positioned in the dome, preventing rotation. While the connecting assembly can be disassembled without tools, it provides a certain resistance to separation of the centering cone and the rolling piston. This resistance can be helpful when installing the chassis assembly in a position rotated 180 degrees relative to its normal road position, as is sometimes used in manufacturing plants. In this installation position, the vehicle frame (to which the air springs are secured via their covers) faces the workshop floor. To complete the chassis assembly, the rigid axle, along with the air spring mounts and pre-installed centering pins, is supplied from above using a workshop crane and then immediately installed. The centering cone is also introduced from above into the correspondingly provided dome of the rolling piston. When the assembled chassis assembly is finally turned back to the road, the aforementioned resistance to separation of the centering cone and rolling piston helps prevent them from accidentally separating again. In the fully assembled connection assembly, the centering cone is particularly seated in the dome in a rotationally fixed manner. A relatively slender centering cone also has the advantage that it has less geometric distortion during production, particularly in an injection molding process.

[0019] Preferably, the centering cone is a component of the centering pin and further comprises a shank extending in the direction of the center axis of the air spring and extending through the air spring support. In particular, the centering pin, consisting of the centering cone and the shank, is constructed integrally. In particular, the end of the shank facing away from the centering cone protrudes from the air spring support to allow for the attachment of a pull-out protection element, such as a securing ring. In particular, the shank has a circumferential groove at the protruding end for accommodating the pull-out protection element.

[0020] Advantageously, the shank and the opening in the air spring support that receives it have a clearance fit with one another, so that the shank can rotate in the opening. This makes it possible to easily compensate for relative movements that occur during driving in the common contact area of the air spring and the air spring support. Such relative movements can be caused, for example, by unilateral elastic compression of a rigid axle, oscillating movements of the vehicle structure, or driving over curbstones.

[0021] According to a refinement of the present invention, the rolling piston is supported on a circular receiving disk of the air spring support, wherein the receiving disk has at least substantially the same outer diameter as the rolling piston on its underside. As a result, the rolling piston and receiving disk are arranged at least substantially flush, thereby preventing the accumulation of dirt in this area during driving. In particular, the common center axis of the air spring, rolling piston, and centering cone coincides with the center axis of the circular receiving disk.

[0022] Preferably, the annular outer wall of the rolling piston, preferably with its end facing the air spring support, rests directly on the circular receiving disk of the air spring support. In this way, in addition to the aforementioned annular contact surface between the rolling piston and the air spring support and the contact surface between the dome of the rolling piston and the centering cone, further load-bearing surface portions are provided for supporting the air spring on the air spring support. In particular, the outer wall of the rolling piston has at least substantially the same outer diameter as the receiving disk, thereby preventing the ingress of dirt into the essentially hollow-cylindrical intermediate chamber, which is open to the bottom and is arranged between the intermediate wall and the outer wall. Because the annular outer wall is perpendicular to the receiving disk, it can bear a relatively high proportion of the load.

[0023] In an advantageous manner, the rolling piston can be manufactured in one operation by injection molding to be installed. In addition, because the intermediate chamber of the basic hollow cylindrical structure arranged between the intermediate wall and the outer wall is openly structured toward the bottom side, this low-cost manufacturing can be realized.

[0024] Advantageously, the centering cone has a circumferential chamfer at its maximum diameter, which is arranged concentrically with the center axis of the air spring and has a cylindrical cap-shaped surface. The section of the centering cone with the chamfer is positively received by a recess cut into the air spring support. This arrangement is advantageous in order to reliably absorb large radial forces, which arise, for example, from braking processes and act perpendicularly to the center axis. In this arrangement, shear forces are not transmitted, or not only, via the shank of the centering cone, but (also) via the significantly thicker centering cone in the chamfered region. In particular, the recess is cylindrical and extends centrally into the receiving disk. The center axis of the circular receiving disk, in particular, coincides with the center axis of the recess.

[0025] Advantageously, the air spring is designed without a stop buffer. This means that the air spring does not have an integrated stop buffer, which limits the movement of the air spring in the direction of the center axis. This movement limitation usually also limits the elastic compression travel of the rigid axle. Air springs with integrated stop buffers have the disadvantage that they are usually designed only for specific chassis components. Air springs without such integrated stop buffers have the advantage that they can be used in different chassis components. When using air springs without stop buffers, the corresponding chassis component usually has a stop buffer at another location, which limits the elastic compression travel of the associated rigid axle. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] The invention will be explained in more detail below with the aid of drawings showing only exemplary embodiments, wherein the same reference numerals denote the same components or elements.

[0027] Figure 1 A chassis assembly according to the prior art is shown in a downwardly tilted perspective view;

[0028] Figure 2 An air spring support according to the invention with two air springs is shown in a perspective view tilted upwards;

[0029] Figure 3 The cross-sectional view shows Figure 2 One of the two air springs shown;

[0030] Figure 4 Shown in a downward-angled perspective Figure 3 Air spring shown;

[0031] Figure 5a The connecting assembly according to the first embodiment of the present invention is shown in a cross-sectional view;

[0032] Figure 5bShown in an upward-tilted perspective Figure 5a Centering pin shown;

[0033] Figure 6a shows a connection assembly according to a second embodiment of the present invention in a cross-sectional view; and

[0034] Figure 6b Shown in an upward-tilted perspective Figure 6a Centering pin shown. DETAILED DESCRIPTION

[0035] Figure 1 The figure shows a chassis assembly 1 of a motor vehicle known from the prior art, which is designed as a commercial vehicle. The chassis assembly 1 comprises a rigid axle 2 equipped with air springs, which is connected on each vehicle side via an air spring mount 3 and a total of four air springs 4 to two longitudinal beams 5 extending parallel to one another of the vehicle frame. The air springs 4 are connected to the correspondingly assigned longitudinal beams 5 via fastening angles 12.

[0036] exist Figure 2 The air spring support 3 shown in FIG has an air spring 4 fastened to the air spring support 3 at each of its two ends. The two air springs 4 each have a compressed air connection (not shown here) and a fastening angle structure 12 (also not shown here) on their upper side.

[0037] Figure 3 An air spring 4 suitable for commercial vehicles is shown. The air spring 4 includes a rolling piston 6 made of thermoplastic and manufactured in a single injection molding process for complete assembly. The rolling bellows 7 of the air spring 4 are connected airtightly to the socket 8 of the rolling piston 6. The air spring 4, designed as a non-stop cushioning system, is suitable for elastically supporting a rigid axle 2 of a motor vehicle equipped with an air spring. In the installed state of the air spring 4, the bottom side 9 of the rolling piston 6 faces the air spring support 3. The air spring 4 can be connected to the longitudinal beam 5 of the commercial vehicle frame via a cover 10 of the air spring 4, arranged parallel to and spaced apart from the bottom side 9. A fastening bracket 12 (not shown here) is arranged between the cover 10 and the longitudinal beam 5 and is fixedly connected to the cover 10. The central axis 11 of the rolling piston 6 coincides with the central axis 11 of the air spring 4. The outer surface of the annular outer wall 13 of the rolling piston 6 serves as a contact surface for the rolling bellows 7. In the installed state of the air spring 4 , when the air spring 4 is compressed during the elastic compression of the rigid axle 2 on which the air spring is installed, the rolling bellows 7 rolls on the outer surface of the annular outer wall 13 .

[0038] The rolling piston 6 has a recess 19 in its bottom side 9 that is rotationally symmetrical with respect to the central axis 11 and is configured as a dome 19. The dome 19 is a component of the tool-free removable connection assembly 15 between the air spring 4 and the air spring support 3 and serves to connect the rolling piston 6 to the air spring support 3. The dome 19 is open toward the bottom side 9 and tapers conically away from the bottom side 9 toward the central axis 11. The annular, airtight intermediate wall 20 of the rolling piston 6 is arranged concentrically not only with the outer wall 13 but also with the dome 19. The intermediate wall 20 encloses a gas-tight pressure chamber 21 of the air spring 4 that extends into the rolling piston 6. The pressure chamber 21 is also airtight toward the bottom side 9 of the rolling piston 6. A substantially hollow-cylindrical intermediate chamber 22 is arranged between the intermediate wall 20 and the outer wall 13. This intermediate chamber is open toward the bottom side 9.

[0039] exist Figure 4 As can be seen in the figure, the pressure chamber 21 has a wall 14 of circular annular design on the bottom side 9 facing the rolling piston 6. The intermediate wall 20 and the outer wall 13 are connected to each other by external ribs extending radially away from the intermediate wall 20. Here, the plate-shaped external ribs extend in a plane containing the center axis 11 of the rolling piston 6. It can also be seen that the intermediate chamber 22 is not a single intermediate chamber, but rather a plurality of individual intermediate chambers arranged in an annular pattern, each of which has a circular segment cross section defined by two adjacent external ribs, the outer wall 13, and the intermediate wall 20.

[0040] Figure 5a The connecting assembly 15 between the air spring 4 and the air spring support 3 is shown, wherein the connecting assembly 15 is removable without tools. The rolling piston 6 of the air spring 4 has the aforementioned recess in its bottom side 9 facing the air spring support 3, which is configured as a dome 19. A centering cone 16 is fastened to the air spring support 3 and fits into the dome 19. This centering cone is completely overlapped by the rolling piston 6. The common center axis 11 of the air spring 4 and the rolling piston 6 also serves as the center axis 11 of the centering cone 16. The rolling piston 6 and the centering cone 16 are made of an injection-moldable thermoplastic. The rolling piston 6 is supported directly on the centering cone 16 and directly on the air spring support 3 in the direction of the center axis 11. The centering cone 16, with a cone angle α of 30 degrees, engages in a positive fit and simultaneously in a surface-to-surface relationship with the conical dome 19 of the rolling piston 6. The dome 19 on the bottom side 9 of the rolling piston 6 has a diameter which is substantially one third of the outer diameter of the rolling piston 6 .

[0041] The pressure chamber 21 of the air spring 4 is separated from the air spring support 3 only by the annular wall 14 of the rolling piston 6, which extends perpendicularly to the center axis 11 of the air spring 4 and rests directly against the air spring support 3. The airtight intermediate wall 20 of the rolling piston 6 surrounds the annular wall 14 on its bottom side 9 and is simultaneously arranged concentrically with and surrounded by the annular outer wall 13 of the rolling piston 6. The rolling piston 6 is supported on a circular receiving disk 18 of the air spring support 3, wherein the receiving disk 18 has essentially the same outer diameter as the rolling piston 6 on its bottom side 9. The annular outer wall 13 of the rolling piston 6 is supported directly on the circular receiving disk 18 of the air spring support 3 with its end facing the air spring support 3.

[0042] As Figure 5b Combine Figure 5a As can be seen, the centering cone 16 is a component of a centering pin 23, which also has a shank 24 extending in the direction of the center axis 11 of the air spring 4 and extending through the air spring support 3. The shank 24 and the opening in the circular receiving disk 18 of the air spring support 3 that receives the shank have a clearance fit, so that the shank 24 can rotate in the opening. The centering pin 23, consisting of the centering cone 16 and the shank 24, is designed as a single piece. The end of the shank 24 facing away from the centering cone 16 protrudes from the air spring support 3 and has a circumferential groove there for receiving a securing ring.

[0043] Figure 6a An alternatively constructed connecting assembly 15 is shown, which is connected to the Figure 5a The connection assembly differs only in that the centering cone 16 has a circumferential chamfer 24 at its maximum diameter (see also Figure 6b ), which is arranged concentrically with the center axis 11 of the air spring 4 and has a cylindrical cover-shaped surface, wherein the section of the centering cone 16 with the chamfer 24 is accommodated in a form-fitting manner by a cylindrical recess 26 hollowed into the air spring support 3.

[0044] List of reference numerals:

[0045] 1 Chassis assembly

[0046] 2 rigid axles

[0047] 3 Air spring bracket

[0048] 4 Air springs

[0049] 5 longitudinal beams

[0050] 6 Rolling Piston

[0051] 7 Rolling bellows

[0052] 8 socket

[0053] 9 Air spring, rolling piston and bottom side of centering cone

[0054] 10 Lid

[0055] 11 Centerline of air spring, rolling piston and centering cone

[0056] 12 Fastening angle structure

[0057] 13 outer wall

[0058] 14 Circular wall

[0059] 15 Connecting Components

[0060] 16 Centering cone

[0061] 17 End side of end area

[0062] 18 Storage tray

[0063] 19 concave, dome

[0064] 20 Middle wall

[0065] 21 Pressure chamber

[0066] 22 Middle cavity

[0067] 23 Centering pin

[0068] 24 handle

[0069] 25 Chamfer

[0070] 26 Depression

[0071] α cone angle

Claims

1. A connection assembly (15) between an air spring (4) and an air spring support (3), -in, The connecting assembly (15) is detachable without tools, wherein the rolling piston (6) of the air spring (4) has a recess (19) in its bottom side (9) facing the air spring support (3), wherein a centering cone (16) is fastened to the air spring support (3) and fits into a recess (19) on the bottom side of the rolling piston (6), - wherein the centering cone (16) is completely overlapped by the rolling piston (6), and - wherein the centering cone (16) and the rolling piston (6) have a common center axis (11), which is also the center axis (11) of the air spring (4), It is characterized by: - the rolling piston (6) and the centering cone (16) are made of plastic, and The rolling piston (6) is supported in a surface-contact manner in the direction of the center axis (11) both directly on the centering cone (16) and directly on the air spring support (3).

2. The connection assembly (15) according to claim 1, characterized in that The recess (19) on the bottom side of the rolling piston (6) is designed as a conical dome that is rotationally symmetrical with respect to the center axis (11) of the air spring (4), into which the centering cone (16) engages in a form-fitting and simultaneously surface-contacting manner.

3. The connection assembly (15) according to claim 2, characterized in that The dome widens conically toward the bottom side (9) of the rolling piston (6) and has a diameter at the bottom side (9) that is less than half the outer diameter of the rolling piston (6).

4. The connection assembly (15) according to any one of claims 1 to 3, characterized in that The pressure chamber (21) of the air spring (4) is separated from the air spring support (3) only by the annular wall (14) of the rolling piston (6), wherein the annular wall (14) is acted upon by the working pressure from the pressure chamber side in the operating state.

5. The connection assembly (15) according to any one of claims 1 to 3, characterized in that The rolling piston (6) has an annular wall (14) which extends perpendicularly to the center axis (11) of the air spring (4) and is supported directly on the air spring support (3) in a surface-contact manner.

6. The connection assembly (15) according to claim 4, characterized in that The rolling piston (6) has an annular, airtight intermediate wall (20), which surrounds the annular wall (14) on the bottom side (9) of the rolling piston (6) and is simultaneously arranged concentrically with the annular outer wall (13) of the rolling piston (6) and is surrounded by the annular outer wall (13).

7. The connection assembly (15) according to claim 5, characterized in that The rolling piston (6) has an annular, airtight intermediate wall (20), which surrounds the annular wall (14) on the bottom side (9) of the rolling piston (6) and is simultaneously arranged concentrically with the annular outer wall (13) of the rolling piston (6) and is surrounded by the annular outer wall (13).

8. The connection assembly (15) according to claim 6, characterized in that A substantially hollow-cylindrical intermediate space (22) is open toward the bottom side (9) and is arranged between the intermediate wall (20) and the outer wall (13).

9. The connection assembly (15) according to claim 7, characterized in that A substantially hollow-cylindrical intermediate space (22) is open toward the bottom side (9) and is arranged between the intermediate wall (20) and the outer wall (13).

10. The connection assembly (15) according to any one of claims 1 to 3, characterized in that The centering cone (16) has a cone angle (α) smaller than 45 degrees.

11. The connection assembly (15) according to claim 10, characterized in that The centering cone (16) has a cone angle (α) of 30 degrees.

12. The connection assembly (15) according to any one of claims 1 to 3, characterized in that The centering cone (16) is a component of a centering pin (23), and the centering pin (23) further comprises a shank (24) extending in the direction of the center axis (11) of the air spring (4) and penetrating the air spring support (3).

13. The connection assembly (15) according to claim 12, characterized in that The shank (24) and the opening in the air spring support (3) that receives the shank have a clearance fit with each other, whereby the shank (24) can rotate in the opening.

14. The connection assembly (15) according to any one of claims 1 to 3, characterized in that The rolling piston (6) is supported on a circular receiving disk (18) of the air spring support (3), wherein the receiving disk (18) has at least substantially the same outer diameter as the rolling piston (6) on its bottom side (9).

15. The connection assembly (15) according to any one of claims 1 to 3, characterized in that The annular outer wall (13) of the rolling piston (6) is supported directly on a circular receiving disk (18) of the air spring support (3) with its end side facing the air spring support (3).

16. The connection assembly (15) according to any one of claims 1 to 3, characterized in that The rolling piston (6) can be manufactured in a completely assembled manner in one operation using an injection molding method.

17. The connection assembly (15) according to any one of claims 1 to 3, characterized in that The centering cone (16) has a circumferential chamfer (25) at its maximum diameter, the chamfer being arranged concentrically with the center axis (11) of the air spring (4) and having a cylindrical cap-shaped surface, and the section of the centering cone (16) having the chamfer (25) is received in a form-fitting manner by a recess (26) bored into the air spring support (3).

18. The connection assembly (15) according to any one of claims 1 to 3, characterized in that The air spring (4) is designed to be non-stop and damped.

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