CN211202709U

CN211202709U - Piston conical surface supporting structure of air spring shock absorber

Info

Publication number: CN211202709U
Application number: CN201922199013.7U
Authority: CN
Inventors: 陈敬辉; 于黎明; 王胜全; 陈志东; 施祥胜; 叶辉
Original assignee: Anhui Tuopusi Auto Parts Co ltd; Baolong Anhui Auto Parts Co ltd
Current assignee: Anhui Tuopusi Auto Parts Co ltd; Baolong Anhui Auto Parts Co ltd
Priority date: 2019-12-10
Filing date: 2019-12-10
Publication date: 2020-08-07
Anticipated expiration: 2029-12-10

Abstract

The utility model discloses a piston conical surface supporting structure of an air spring shock absorber, the air spring shock absorber comprises a piston and an oil storage cylinder, the lower end surface of the piston is provided with a bell mouth part, a supporting ring with a conical surface on the surface is arranged on the oil storage cylinder corresponding to the assembly position of the lower end of the piston, and a rubber part is assembled between the bell mouth part and the supporting ring; the inner surface of the rubber part is in a conical surface shape matched with the outer surface of the support ring, the outer surface of the rubber part is in a conical surface shape matched with the inner surface of the bell mouth, a plurality of sealing convex rings are formed on the inner surface and the outer surface of the rubber part, and a metal framework is arranged in the rubber part. This is novel through the conical surface rubber spare of mutually supporting of assembly between oil storage cylinder and piston, can compensate the axial off-centre of shock absorber when shock absorber pillar always heels, guarantees empty spring axis and shock absorber axis automatic centering, reduces the load axis and the eccentric abnormal sound that arouses of shock absorber axis and rocks.

Description

Piston conical surface supporting structure of air spring shock absorber

Technical Field

The utility model relates to a piston cone bearing structure of air spring bumper shock absorber belongs to the shock attenuation technical field.

Background

The air spring piston is used as an indispensable part of the air spring shock absorber, the upper end of the air spring piston is buckled and pressed together with the leather bag through a pressing ring, and the lower end of the air spring piston is fixed together with the lower tray. As shown in figure 3, the piston and oil storage cylinder assembly structure of the common air spring shock absorber is characterized in that a lower tray and the oil storage cylinder are welded together through two weld joints, a limiting groove is reserved on the surface of the lower tray to fix an O-shaped sealing ring, and the lower end of an aluminum alloy piston is in interference fit with the O-shaped ring to achieve the sealing effect of the lower end of the piston. The whole sealing link is in contact sealing with the metal annular line, and the rest part is still in original rigid contact. When the shock absorber strut assembly is subjected to lateral force, the automatic centering of an air spring axis and a shock absorber core is poor, the eccentricity of the shock absorber axis is easily caused, and the abnormal sound of the shock absorber is caused, so that the defects exist.

SUMMERY OF THE UTILITY MODEL

To the above-mentioned not enough, the utility model provides an air spring bumper shock absorber's piston cone bearing structure. The utility model adopts the technical scheme as follows:

a piston conical surface supporting structure of an air spring shock absorber comprises a piston and an oil storage cylinder, wherein a horn mouth part is arranged on the lower end surface of the piston, a supporting ring with a conical surface on the outer surface is arranged on the oil storage cylinder at the assembly position corresponding to the lower end of the piston, and a rubber part is assembled between the horn mouth part and the supporting ring; the rubber part is sleeved on the support ring of the oil storage cylinder.

The inner surface of the rubber part is in a conical surface shape matched with the outer surface of the support ring, and the outer surface of the rubber part is in a conical surface shape matched with the inner surface of the horn mouth.

And a plurality of sealing convex rings are formed on the inner surface and the outer surface of the rubber piece.

A metal framework is arranged in the rubber part.

Compared with the prior art, the beneficial effects of the utility model reside in that: the utility model discloses an assemble the conical surface rubber spare of mutually supporting between oil storage cylinder and piston, the elasticity curve that utilizes the rubber spare compensates the axial eccentricity of shock absorber when the shock absorber pillar always heels, guarantees empty spring axis and shock absorber axis automatic centering, reduces the abnormal sound that rocks that load axis (empty spring axis) and the eccentric arouse of shock absorber axis and lead to. The utility model discloses a support ring replaces tray under the welding, reduces the tubular product internal diameter heat altered shape and the gas tightness defect that the welding arouses, also alleviates the weight of shock absorber pillar assembly simultaneously. The utility model discloses an inside and outside surface of rubber spare sets up the multiple seal bulge loop, has increased the leakproofness between oil storage cylinder, piston and the rubber spare, sets up the spacing assurance rubber spare of metal framework and can not have the risk that drops with oil storage cylinder.

Drawings

Fig. 1 is a schematic structural view of the present invention;

FIG. 2 is a schematic view of a portion of the structure of FIG. 1;

fig. 3 is a schematic view of an assembly structure of a piston and an oil reservoir in the prior art.

Detailed Description

The present invention will be described in detail with reference to the accompanying drawings.

Example (b):

referring to fig. 1-2, the piston cone support structure of the air spring shock absorber includes a piston 1 and an oil storage cylinder 2, a bell mouth 10 is provided on a lower end surface of the piston 1, a support ring 20 having a cone outer surface is provided on the oil storage cylinder 2 at an assembly position corresponding to a lower end of the piston 1, and a rubber member 3 is assembled between the bell mouth 10 and the support ring 20; the rubber part 3 is sleeved on the support ring 20 of the oil storage cylinder 2.

The inner surface of the rubber part 3 is in a conical surface shape matched with the outer surface of the support ring 20, and the outer surface of the rubber part 3 is in a conical surface shape matched with the inner surface of the bell mouth part 10.

A plurality of sealing convex rings 30 are formed on the inner surface and the outer surface of the rubber part 3.

And a metal framework 4 is arranged in the rubber part 3.

The utility model discloses an assemble the conical surface rubber spare of mutually supporting between oil storage cylinder and piston, the elasticity curve that utilizes the rubber spare compensates the axial eccentricity of shock absorber when the shock absorber pillar always heels, guarantees empty spring axis and shock absorber axis automatic centering, reduces the abnormal sound that rocks that load axis (empty spring axis) and the eccentric arouse of shock absorber axis and lead to. The utility model discloses a support ring replaces tray under the welding, reduces the tubular product internal diameter heat altered shape and the gas tightness defect that the welding arouses, also alleviates the weight of shock absorber pillar assembly simultaneously. The utility model discloses an inside and outside surface of rubber spare sets up the multiple seal bulge loop, has increased the leakproofness between oil storage cylinder, piston and the rubber spare, sets up the spacing assurance rubber spare of metal framework and can not have the risk that drops with oil storage cylinder.

The foregoing is a preferred embodiment of the present invention, and it should be noted that for those skilled in the art, a plurality of improvements and decorations can be made without departing from the principle of the present invention, and these improvements and decorations are also considered as the protection scope of the present invention.

Claims

1. The utility model provides an air spring bumper shock absorber's piston conical surface bearing structure, air spring bumper shock absorber includes piston and oil storage cylinder, its characterized in that: the lower end face of the piston is provided with a bell mouth part, a support ring with a conical surface on the outer surface is arranged on the oil storage cylinder at an assembly position corresponding to the lower end of the piston, and a rubber part is assembled between the bell mouth part and the support ring; the rubber part is sleeved on the support ring of the oil storage cylinder, the inner surface of the rubber part is in a conical surface shape matched with the outer surface of the support ring, and the outer surface of the rubber part is in a conical surface shape matched with the inner surface of the bell mouth.

2. The piston cone support structure of an air spring shock absorber according to claim 1, wherein: and a plurality of sealing convex rings are formed on the inner surface and the outer surface of the rubber piece.

3. The piston cone support structure of an air spring shock absorber according to claim 1, wherein: a metal framework is arranged in the rubber part.