BELLOWS ASSEMBLY AND BELLOWS FOR VEHICLES

Abstract

A bellows assembly for a vibration damper includes a bellows with a plurality of pockets with pocket walls and a pocket inner profile, a helical compression spring with windings consisting of a wound spring wire and pressure contact lateral faces. The helical compression spring is arranged in the bellows and the plurality of pockets extend coaxially to the longitudinal axis of the helical compression spring. Under pressure loading of the helical compression spring arranged in the bellows, the bellows folds together with the helical compression spring, wherein the wound spring wire is arranged at least in certain portions in the plurality of pockets, wherein the pocket walls of the plurality of pockets in which the wound spring wire is arranged at least in certain portions cover at least the mutually opposite pressure contact lateral faces of adjacent windings of the helical compression spring.

Claims

1.-12. (canceled)

13. A bellows assembly for a vibration damper, comprising: a bellows with a plurality of pockets with pocket walls and a pocket inner profile, and a helical compression spring arranged in the bellows, the helical compression spring comprising windings consisting of a wound spring wire and pressure contact lateral faces, wherein the plurality of pockets extends coaxially to the longitudinal axis of the helical compression spring and, under pressure loading of the helical compression spring arranged in the bellows, the bellows is configured to fold together with the helical compression spring, wherein at least portions of the wound spring wire is arranged in the plurality of pockets, wherein the pocket walls of the plurality of pockets in which the wound spring wire is arranged at least in certain portions cover at least the mutually opposite pressure contact lateral faces of adjacent windings of the helical compression spring.

14. The bellows assembly of claim 13, wherein the pocket walls of the plurality of pockets are arranged such that, under complete or partial pressure loading of the helical compression spring, the mutually opposite pressure contact lateral faces of adjacent windings of the helical compression spring do not contact one another.

15. The bellows assembly of claim 13, wherein the pocket walls of adjacent pockets of the plurality of pockets in which the wound spring wire is arranged at least in certain portions space apart at least the wound spring wire in the region of the pressure contact lateral faces of adjacent windings of the helical compression spring.

16. The bellows assembly of claim 13, wherein the pocket walls of the plurality of pockets in which the wound spring wire is arranged at least in certain portions extend, in the region of the lateral face of the wound spring wire arranged at least in certain portions in the plurality of pockets, at least radially beyond half the cross section of the wound spring wire in the direction of the longitudinal axis of the helical compression spring.

17. The bellows assembly of claim 16, wherein the adjacent pocket walls of the plurality of pockets in which extend at least radially beyond half the cross section of the wound spring wire in the direction of the longitudinal axis of the helical compression spring form one or more loops.

18. The bellows assembly of claim 17, wherein each of the loops is a round arc loop or an omega loop.

19. The bellows assembly of claim 13, wherein the pocket inner profile is a pointed arc profile.

20. The bellows assembly of claim 13, wherein the pocket inner profile is a round arc profile

21. The bellows assembly of claim 20, wherein the pocket inner profile is a circular arc.

22. The bellows assembly of claim 17, wherein the pocket inner profile is formed in such a way that the pocket walls, with the exception of the loops, lie on the outer radius of the wound spring wire arranged at least in certain portions in the plurality of pockets.

23. The bellows assembly of claim 13, wherein the plurality of pockets of the bellows are formed as a thread, at least in subregions, wherein the helical compression spring is screwed into the thread.

24. The bellows assembly of claim 23, wherein the thread is formed as an internal thread.

25. The bellows assembly of claim 23, wherein the thread has the same pitch as the windings of the helical compression spring in the construction position.

26. A bellows for arranging on a helical compression spring with windings consisting of a wound spring wire according to the bellows assembly of claim 13, wherein the bellows comprises a plurality of pockets with pocket walls and a pocket inner profile, wherein the plurality of pockets are configured to receive a wound spring wire at least in certain portions in the plurality of pockets, wherein the pocket walls of the plurality of pockets are configured such that, with complete or partial folding of the bellows, the adjacent pocket walls at least partially contact one another.

27. A vibration damper for vehicles, comprising: a bellows assembly comprising a bellows with a plurality of pockets with pocket walls and a pocket inner profile, and a helical compression spring arranged in the bellows, the helical compression spring comprising windings consisting of a wound spring wire and pressure contact lateral faces, wherein the plurality of pockets extends coaxially to the longitudinal axis of the helical compression spring and, under pressure loading of the helical compression spring arranged in the bellows, the bellows is configured to fold together with the helical compression spring, wherein at least portions of the wound spring wire is arranged in the plurality of pockets, wherein the pocket walls of the plurality of pockets in which the wound spring wire is arranged at least in certain portions cover at least the mutually opposite pressure contact lateral faces of adjacent windings of the helical compression spring, wherein the pocket walls of the plurality of pockets are arranged such that, under complete or partial pressure loading of the helical compression spring, the mutually opposite pressure contact lateral faces of adjacent windings of the helical compression spring do not contact one another.

Description

BRIEF DESCRIPTION OF THE DRAWINGS

[0024] The bellows assembly according to the invention and the bellows according to the invention are explained with reference to the drawings.

[0025] FIG. 1 schematically shows a longitudinal section of a bellows assembly according to one embodiment of the invention,

[0026] FIG. 2 schematically shows a longitudinal section of a bellows assembly according to FIG. 1 in a pressure-loaded state according to one embodiment of the invention.

[0027] FIG. 1 shows a schematic longitudinal section of a bellows assembly 1 in the construction position, comprising a bellows 2 and a helical compression spring 6 arranged in the bellows 2. The bellows 2 has a plurality of pockets 3, 3, 3 with pocket walls 4, 4, 4 and a pocket inner profile 5. The pocket inner profile 5 is illustrated by way of example as a pointed arc profile. The helical compression spring 6 comprises windings 7, 7 consisting of a wound spring wire 8 and pressure contact lateral faces 9, 9, 9, 9. The plurality of pockets 3, 3, 3 extend coaxially to the helical compression spring 6. The wound spring wire 8 is arranged at least in certain portions in the plurality of pockets 3, 3, 3, wherein the pocket walls 4, 4, 4 of the plurality of pockets 3, 3, 3 in which the wound spring wire 8 is arranged at least in certain portions cover at least the mutually opposite pressure contact lateral faces 9, 9, 9, 9 of adjacent windings 7, 7 of the helical compression spring 6. The bellows assembly 1 is illustrated as pressure-loaded in the lower region, wherein the pocket walls 4, 4, 4 cover at least the pressure contact lateral faces 9, 9, 9, 9 of adjacent windings 7, 7 of the helical compression spring 6, and the adjacent pocket walls 4, 4, 4 extend at least radially beyond half the cross section of the wound spring wire 8 in the direction of the longitudinal axis of the helical compression spring 6 and form a loop 10, 10. The loop 10, 10 is illustrated by way of example as an arc loop.

[0028] FIG. 2 illustrates a schematic longitudinal section of the bellows assembly 1 according to FIG. 1 in a pressure-loaded state, i.e. the bellows assembly according to FIG. 1 is sprung in further such that the windings of the progressive region together with the pocket walls arranged between them are situated in the fully compressed state, wherein the pocket walls of the respective pockets are arranged between mutually opposite pressure contact lateral faces of adjacent windings and cover the opposite pressure contact lateral faces of adjacent windings.

INDUSTRIAL APPLICABILITY

[0029] Bellows assemblies, bellows and vibration dampers for vehicles having a bellows assembly of the above-described type are used in the production of damping systems, in particular in vibration dampers of motor vehicles.

LIST OF REFERENCE SIGNS

[0030] 1=Bellows assembly [0031] 2=Bellows [0032] 3, 3, 3=Pocket(s) [0033] 4, 4, 4=Pocket wall(s) [0034] 5=Pocket inner profile [0035] 6=Helical compression spring [0036] 7, 7=Winding(s) [0037] 8=Spring wire [0038] 9, 9, 9, 9=Pressure contact lateral face(s) [0039] 10, 10=Loop