CN211901417U

CN211901417U - Compound lightweight piston structure in air suspension system

Info

Publication number: CN211901417U
Application number: CN201922317904.8U
Authority: CN
Inventors: 钟胜; 朱杰; 刘庆武; 钟炳林
Original assignee: Shanghai Wman Automotive Systems Co ltd
Current assignee: Shanghai Wman Automotive Systems Co ltd
Priority date: 2019-12-22
Filing date: 2019-12-22
Publication date: 2020-11-10
Anticipated expiration: 2029-12-22

Abstract

The utility model discloses a compound lightweight piston structure in air suspension system, including upper plate, piston cylinder, lower plate and stainless steel double-screw bolt, the round hole has been seted up at the top center of upper plate, the lower bottom surface welded fastening of upper plate is on the upper top surface of pipe, the lower bottom surface and the lower plate upper portion assembly welding of pipe, the outer edgewise welding of lower plate is on the medial surface of piston cylinder, the pipe cover is established in the piston cylinder, and the top of pipe wears out the top of piston cylinder, lower plate and stainless steel double-screw bolt inlay die-casting and constitute, and the stainless steel double-screw bolt sets up in the bottom center of lower plate; this compound lightweight piston structure among air suspension system, weight reduction 55%, it is light and handy to can avoid the bottom plate to appear stress concentration receiving big impact process, avoid the bottom plate to appear the crackle, effectively improve piston assembly's life, reduction in production cost and cost of maintenance, and can avoid whole car unable operation.

Description

Compound lightweight piston structure in air suspension system

Technical Field

The utility model relates to an air suspension technical field specifically is a compound lightweight piston structure in air suspension system.

Background

Air suspensions are increasingly used in vehicles due to their unique advantages, and air suspension systems are also being developed toward light weight and high strength, in addition to being developed in an effort to improve riding comfort and safety. The air spring assembly plays a crucial role as a performance part in the air suspension system, and the piston assembly is always a key part of the air spring assembly.

The piston assembly in the prior art has a complex overall structure and more welding, and brings great inconvenience and high labor intensity to welding personnel; in addition, stress concentration and welding deformation are easily caused in the stress process of the lower bottom plate of the piston assembly, so that the lower bottom plate is cracked, the air spring assembly leaks air, and the whole vehicle cannot run. The large area of the supporting seat matched with the supporting seat can avoid the use problem.

In view of the deficiencies of the prior art, it is necessary to design a composite lightweight piston structure in an air suspension system.

Disclosure of Invention

An object of the utility model is to provide a compound lightweight piston structure among air suspension system to solve the problem that proposes among the above-mentioned background art.

In order to solve the technical problem, the utility model provides a following technical scheme: the utility model provides a compound lightweight piston structure in air suspension system, includes top plate, piston cylinder, lower plate and stainless steel double-screw bolt, the round hole has been seted up to the top central authorities of top plate, the last top surface of lower bottom surface welded fastening at the pipe of top plate, the lower bottom surface and the lower plate upper portion assembly welding of pipe, the outer edgewise welding of lower plate is on the medial surface of piston cylinder, the pipe cover is established in the piston cylinder, and the top of piston cylinder is worn out at the top of pipe, die-casting constitution is inlayed to lower plate and stainless steel double-screw bolt, and the stainless steel double-screw bolt setting is central in the bottom of lower plate.

Furthermore, the lower bottom plate comprises a disc surface and a ring surface which are parallel to each other, the disc surface and the ring surface are connected through a V-shaped conical surface with unequal cross sections, the inner edge of the ring surface is in transitional connection with the upper end of the V-shaped conical surface through two non-concentric circular arcs, and the outer edge of the disc surface is in transitional connection with the lower end of the V-shaped conical surface through two non-concentric circular arcs.

Furthermore, the middle section of the side surface of the round pipe is provided with a through hole.

Furthermore, the middle part of the lower bottom plate is provided with a V-shaped cylinder which is integrally formed by die casting.

Further, the piston cylinder is a cylindrical surface with unequal cross sections.

Compared with the prior art, the utility model discloses the beneficial effect who reaches is: this compound lightweight piston structure in air suspension system, lower plate include the parallel disc face and the torus of project, and disc face and torus are connected through the V type circular conical surface of unequal cross-section, through two big circular arcs transitional coupling of decentraction between the inward flange of torus and the upper end of V type circular conical surface, through two big circular arcs transitional coupling of decentraction between the outward flange of disc face and the lower extreme of V type circular conical surface. By adopting the structure, the weight of the piston assembly can be reduced by 55%, the piston assembly is light and handy as a whole, the stress concentration of the lower bottom plate can be avoided in the process of large impact, the lower bottom plate is prevented from cracking, the service life of the piston assembly is effectively prolonged, the production cost and the maintenance cost are reduced, and the phenomenon that the whole vehicle cannot run can be avoided.

Drawings

The accompanying drawings are included to provide a further understanding of the invention, and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention, and together with the description serve to explain the invention and not to limit the invention. In the drawings:

fig. 1 is an exploded view of the overall structure of the present invention;

fig. 2 is a cross-sectional view of the overall structure of the present invention;

in the figure: 100. an upper top plate; 200. a piston cylinder; 300. a lower base plate; 400. a stainless steel stud; 110. a circular hole; 310. a circular tube; 311. and a through hole.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

Referring to fig. 1-2, the present invention provides a technical solution: a composite lightweight piston structure in an air suspension system comprises an upper top plate 100, a piston cylinder 200, a lower bottom plate 300 and stainless steel studs 400, wherein the center of the top of the upper top plate 100 is provided with a round hole 110, the lower bottom surface of the upper top plate 100 is welded and fixed on the upper top surface of a round tube 310, the middle section of the side surface of the round tube 310 is provided with a through hole 311, the lower bottom surface of the round tube 310 is assembled and welded with the upper part of the lower bottom plate 300, the outer edge surface of the lower bottom plate 300 is welded on the inner side surface of the piston cylinder 200, the piston cylinder 200 is of an unequal cross section, the round tube 310 is sleeved in the piston cylinder 200, the top of the round tube 310 penetrates out of the top of the piston cylinder 200, the lower bottom plate 300 and the stainless steel studs 400 are embedded and formed, the stainless steel studs 400 is arranged in the center of the bottom of the lower bottom plate 300, the middle part of the lower bottom plate 300 is integrally formed by die-casting V-casting of, the inner edge of the circular ring surface is in transitional connection with the upper end of the V-shaped conical surface through two non-concentric large arcs, and the outer edge of the circular disc surface is in transitional connection with the lower end of the V-shaped conical surface through two non-concentric large arcs; the utility model discloses a, lower plate 300 and stainless steel double-screw bolt 400 are inlayed the die-casting and are constituteed to the outside is wholly wrapped by the aluminum product, avoid gas leakage, reduce the welding and avoid welding deformation, the effectual bearing performance who improves lower plate 300 can avoid lower plate 300 to appear stress concentration receiving big impact process, avoid lower plate 300 crackle, effectively improve piston assembly's life, adopt this structure can make this piston assembly's weight to descend 55%, make its whole light and handy.

It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.

Finally, it should be noted that: although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications may be made to the embodiments described in the foregoing embodiments, or equivalents may be substituted for elements thereof. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. The utility model provides a compound lightweight piston structure in air suspension system, includes roof (100), piston cylinder (200), lower plate (300) and stainless steel stud (400), its characterized in that: the center of the top of the upper top plate (100) is provided with a round hole (110), the lower bottom surface of the upper top plate (100) is welded and fixed on the upper top surface of a round tube (310), the lower bottom surface of the round tube (310) is assembled and welded with the upper part of a lower bottom plate (300), the outer edge surface of the lower bottom plate (300) is welded on the inner side surface of a piston cylinder (200), the round tube (310) is sleeved in the piston cylinder (200), the top of the round tube (310) penetrates out of the top of the piston cylinder (200), the lower bottom plate (300) and a stainless steel stud (400) are embedded and die-cast to form the stainless steel stud (400), and the stainless steel stud (400) is arranged in the center of the bottom of the; the lower bottom plate (300) comprises a disc surface and a circular ring surface which are parallel to each other, the disc surface and the circular ring surface are connected through a V-shaped conical surface with unequal cross sections, the inner edge of the circular ring surface is in transitional connection with the upper end of the V-shaped conical surface through two non-concentric large arcs, and the outer edge of the disc surface is in transitional connection with the lower end of the V-shaped conical surface through two non-concentric large arcs; the middle section of the side surface of the round pipe (310) is provided with a through hole (311); the middle part of the lower bottom plate (300) is provided with a V-shaped cylinder which is integrally formed by die casting; the piston cylinder (200) is a cylindrical surface with unequal cross sections.