AIR SPRING CONNECTING DEVICE SEAL

Abstract

An air spring connecting device for mounting an air spring strut on a vehicle may include an air spring support bearing having a head bearing receiver, a head bearing having at least one cylindrical outer surface, and a piston rod that is axially guided through the head bearing and is sealed in an airtight manner relative to the head bearing. The head bearing may be positioned in the head bearing receiver of the air spring support bearing positioned coaxially relative to the piston rod. An airtight connection may be formed between the head bearing receiver and the head bearing. A press connection element may be positioned in direct contact with the head bearing receiver and the head bearing. A sealing element may be positioned in a region of the head bearing receiver between the air spring support bearing and the head bearing.

Claims

1.-10. (canceled)

11. An air spring connecting device for mounting an air spring strut on a vehicle, the air spring connecting device comprising: an air spring support bearing having a head bearing receiver; a head bearing having a cylindrical outer surface; a piston rod that is axially guided through the head bearing and is sealed in an airtight manner relative to the head bearing, wherein the head bearing is positioned in the head bearing receiver of the air spring support bearing positioned coaxially relative to the piston rod, wherein an airtight connection exists between the head bearing receiver of the air spring support bearing and the head bearing; a press connection element disposed in direct contact with the head bearing receiver of the air spring support bearing and the head bearing; and a sealing element disposed in a region of the head bearing receiver between the air spring support bearing and the head bearing.

12. The air spring connecting device of claim 11 wherein at least one of the press connection element or the sealing element is disposed in a region of the cylindrical outer surface.

13. The air spring connecting device of claim 11 wherein the press connection element comprises a sealing element receiver, wherein the sealing element is disposed on the sealing element receiver.

14. The air spring connecting device of claim 13 wherein the sealing element receiver comprises a recess.

15. The air spring connecting device of claim 11 wherein the sealing element is spaced apart from the head bearing.

16. The air spring connecting device of claim 11 wherein the sealing element forms a substance-to-substance bond with the head bearing and is configured as a sealing lip of the head bearing.

17. A method for producing an air spring connecting device for mounting an air spring strut on a vehicle, the method comprising: providing an air spring support bearing having a head bearing receiver; providing a head bearing comprising a piston rod that is axially guided through the head bearing and sealed in an airtight manner relative to the head bearing, wherein the head bearing comprises a cylindrical outer surface; providing a press connection element; providing a sealing element; and connecting the head bearing with the air spring support bearing by way of the press connection element, wherein the head bearing is introduced into the head bearing receiver of the air spring support bearing and is sealed by way of the sealing element in an airtight manner relative to the air spring support bearing.

18. The method of claim 17 comprising positioning at least one of the press connection element or the sealing element in a region of the cylindrical outer surface.

19. The method of claim 17 wherein the press connection element comprises a sealing element receiver, wherein the sealing element is disposed on the sealing element receiver.

20. The method of claim 17 wherein the sealing element is configured as a substance-to-substance bond with the head bearing, wherein the head bearing comprises a sealing lip.

Description

BRIEF DESCRIPTION OF THE DRAWINGS

[0047] The air spring connecting device according to the invention for mounting an air spring strut on a vehicle is described with reference to the drawings.

[0048] FIG. 1 shows schematically a longitudinal section of an air spring connecting device according to an embodiment of the invention,

[0049] FIG. 2 shows schematically a longitudinal section of an air spring connecting device according to FIG. 1 with a sealing lip configured on the head bearing according to an embodiment of the invention,

[0050] FIG. 3 shows schematically a longitudinal section of an air spring connecting device according to FIG. 2 with two sealing lips configured on the head bearing according to an embodiment of the invention.

[0051] In FIG. 1 is shown a longitudinal section of an air spring connecting device 1, comprising an air spring support bearing 2 for connecting to a load to be absorbed, in particular a vehicle body or an axle of the vehicle, a head bearing 3 and a piston rod 4 according to an embodiment of the invention. The air spring support bearing 2 comprises a head bearing receiver 5, the head bearing 3 being arranged therein. The head bearing receiver 5 is shown with an outer surface M. The piston rod 4 is passed axially through the head bearing 3 and sealed by sealing elements in an airtight manner relative to the head bearing 3. A press connection element 6 is arranged between the air spring support bearing 2 and the head bearing 3. The press connection element 6 forms a press fit between the air spring support bearing 2 and the head bearing 3. On the side remote from the load to be absorbed, in particular of a vehicle body or an axle of the vehicle, a sealing element 7 is arranged coaxially relative to the piston rod 4. The press connection element 6 comprises a sealing element receiver 8, the sealing element 7 being arranged therein. The sealing element 7 seals the head bearing 3 relative to the air spring support bearing 2 in an airtight manner. The piston rod 4 is designed as a piston rod tube with a cable duct 9. A cable, in particular for adjusting the electrical damping force, is guided through the cable duct 9.

[0052] A longitudinal section of the air spring connecting device 1 according to FIG. 1 having the sealing element 7 with the contour of a sealing lip is shown in FIG. 2. The sealing lip is shown arranged on the head bearing 3. The sealing element 7 is in direct contact with the outer surface M of the head bearing receiver 5 with the sealing lip, wherein the sealing element 7 seals the head bearing 3 in an airtight manner relative to the air spring support bearing 2.

[0053] In FIG. 3, a longitudinal section of the air spring connecting device 1 according to FIG. 2 is shown. The sealing element 7 arranged on the head bearing 3 is shown with the contour of two sealing lips. The sealing element 7 is in direct contact with the outer surface M of the head bearing receiver 5 with the two sealing lips, wherein the sealing element 7 seals the head bearing 3 in an airtight manner relative to the air spring support bearing 2.

[0054] Commercial Application

[0055] Air spring connecting devices for mounting an air spring strut on a vehicle and a method for producing an air spring connecting device for mounting an air spring strut on a vehicle of the type described above are used in the production of vehicles, in particular chassis of motor vehicles.

LIST OF REFERENCE NUMERALS

[0056] 1=Air spring connecting device [0057] 2=Air spring support bearing [0058] 3=Head bearing [0059] 4=Piston rod [0060] 5=Head bearing receiver [0061] 6=Press connection element(s) [0062] 7=Sealing element(s) [0063] 8=Sealing element receiver(s) [0064] M=Outer surface