阅读说明：本技术 一种空气弹簧的上气室结构 (Upper air chamber structure of air spring ) 是由 朱飞 刘辉 殷吕 石建德 王伟 宋礼礼 刘芳 司马勇 于 2021-09-27 设计创作，主要内容包括：本发明提供了一种空气弹簧,包括能够拼合的上盖和下盖,所述上盖内部形成有一容纳腔,所述容纳腔内放置有与上盖同轴的连接件,所述连接件沿轴向具有贯穿的装配孔,所述连接件的内外环面均被容纳腔包裹,所述连接件的内环面设置为台阶型结构,所述容纳腔与连接件的外环面适应性配合,容纳腔上端与连接件的内环面之间设置有一圈密封环。本发明的优点在于：在上盖上设置一个容纳腔以包裹连接件,通过连接件安装减震器的隔震块,实现与减震器的连接,同时在连接件的内环面上设置了密封环,保证隔震块与连接件的密封性；在连接件上设置台阶型结构,通过容纳腔与连接件的配合对容纳腔与连接件之间的空间进行密封。(The invention provides an air spring which comprises an upper cover and a lower cover which can be spliced, wherein a containing cavity is formed in the upper cover, a connecting piece coaxial with the upper cover is placed in the containing cavity, the connecting piece is provided with a through assembling hole along the axial direction, the inner ring surface and the outer ring surface of the connecting piece are all wrapped by the containing cavity, the inner ring surface of the connecting piece is of a stepped structure, the containing cavity is in adaptive fit with the outer ring surface of the connecting piece, and a circle of sealing ring is arranged between the upper end of the containing cavity and the inner ring surface of the connecting piece. The invention has the advantages that: an accommodating cavity is formed in the upper cover to wrap the connecting piece, a shock insulation block of the shock absorber is installed through the connecting piece to achieve connection with the shock absorber, and meanwhile, a sealing ring is arranged on the inner ring surface of the connecting piece to guarantee sealing performance of the shock insulation block and the connecting piece; and a step-type structure is arranged on the connecting piece, and the space between the accommodating cavity and the connecting piece is sealed through the matching of the accommodating cavity and the connecting piece.)

1. An upper air chamber structure of an air spring is characterized in that: the connecting piece is characterized by comprising an upper cover and a lower cover which can be spliced, a containing cavity is formed in the upper cover, a connecting piece coaxial with the upper cover is placed in the containing cavity, the connecting piece is provided with a through assembling hole along the axial direction, the inner ring surface and the outer ring surface of the connecting piece are wrapped by the containing cavity, the inner ring surface of the connecting piece is arranged to be of a step-shaped structure, the containing cavity is in adaptive fit with the outer ring surface of the connecting piece, and a circle of sealing ring is arranged between the upper end of the containing cavity and the inner ring surface of the connecting piece.

2. The upper air chamber structure of an air spring according to claim 1, wherein: the connecting piece is made of metal materials, and the upper cover and the lower cover are made of glass fiber reinforced nylon materials.

3. The upper air chamber structure of an air spring according to claim 2, wherein: the connecting piece is pressed into the accommodating cavity, and a second sealing ring is further arranged between the accommodating cavity and the outer ring surface of the connecting piece.

4. The upper air chamber structure of an air spring according to claim 2, wherein: the upper cover is injection-molded on the connecting piece by taking the connecting piece as an inner mold.

5. The upper air chamber structure of an air spring according to claim 2, wherein: the upper cover and the lower cover are axially connected and heated and fused together.

6. The upper air chamber structure of an air spring according to claim 1, wherein: the connecting piece upper surface has a ring flange, be provided with a plurality of thread bush on the ring flange, the thread bush is the metal material.

7. The upper air chamber structure of an air spring according to claim 6, wherein: the threaded sleeve is internally provided with internal threads and is fixed on the flange plate through external threads in a screwed connection mode.

8. The upper air chamber structure of an air spring according to claim 1, wherein: the utility model discloses a pneumatic air conditioner, including upper cover, bottom plate, top baffle, bottom plate, upper cover, lower cover, upper cover, lower cover, upper cover, lower cover, upper cover, lower cover, upper cover, lower cover, upper cover, lower cover, upper cover, lower cover, upper cover, lower cover, upper cover, lower cover, upper cover, lower cover, upper cover, lower cover, upper cover, lower cover, upper cover, lower cover, upper cover, lower cover, upper cover, lower cover, upper cover.

9. The upper air chamber structure of an air spring according to claim 8, wherein: a plurality of reinforcing ribs are respectively arranged between the upper partition plate and the outer side baffle of the upper cover and between the upper partition plate and the accommodating cavity; and a plurality of reinforcing ribs are arranged between the bottom separation plate and the outer side baffle of the lower cover.

10. The upper air chamber structure of an air spring according to claim 8, wherein: the bottom division plate extends outwards along the axial direction to form an assembly opening, an anti-skidding groove is formed in the surface of the assembly opening, and a circle of support ring is arranged on the inner side of the assembly opening.

Technical Field

The invention relates to the technical field of air springs, in particular to an upper air chamber structure of an air spring.

Background

Along with the improvement of people's requirement for riding comfort, also more and more high to vehicle chassis's shock attenuation design's requirement, when the tradition used steel coil spring to carry out the shock attenuation design, because steel coil spring's natural frequency receives the influence of deformation distance great, the deformation range is limited, only can provide comfortable shock attenuation effect in the minizone, and the travelling comfort is not good when the highway section of jolting is gone.

The invention patent application with the publication number of CN107107697A discloses a combination and an air spring component with the combination, wherein an upper component is formed by matching a first component and a second component, the first component is wrapped by the second component in a sealing mode, the edge of the second component is fused with a lower component for sealing to form the air spring, the first component and the second component are respectively formed and then are in press fit, the matched structure has certain deformation and the risk of gas leakage, and the sealing performance cannot meet the use requirement.

Disclosure of Invention

The invention aims to provide an air spring upper air chamber structure capable of being effectively sealed.

The invention solves the technical problems through the following technical scheme: the air spring comprises an upper cover and a lower cover which can be spliced, wherein a containing cavity is formed inside the upper cover, a connecting piece coaxial with the upper cover is placed in the containing cavity, the connecting piece is provided with a through assembling hole along the axial direction, the inner ring surface and the outer ring surface of the connecting piece are wrapped by the containing cavity, the inner ring surface of the connecting piece is of a step-shaped structure, the containing cavity is in adaptive fit with the outer ring surface of the connecting piece, and a circle of sealing ring is arranged between the upper end of the containing cavity and the inner ring surface of the connecting piece.

According to the invention, the upper cover is provided with the accommodating cavity for wrapping the connecting piece, the shock insulation block of the air spring shock absorber is installed through the connecting piece, so that the connection with the shock absorber is realized, and meanwhile, the sealing ring is arranged on the inner ring surface of the connecting piece, so that the sealing property between the shock insulation block and the connecting piece can be ensured under the condition of installing the shock insulation block; set up step type structure on the connecting piece, seal the space that holds between chamber and the connecting piece through the cooperation that holds chamber and connecting piece, prevent the gas leakage of air-supply chamber, ensure to satisfy air spring's user demand.

Preferably, the connecting piece is made of metal, and the upper cover and the lower cover are made of glass fiber reinforced nylon materials.

Preferably, the connecting piece is pressed into the accommodating cavity, and a second sealing ring is arranged between the accommodating cavity and the outer ring surface of the connecting piece.

Preferably, the upper cover is injection-molded on the connecting piece by taking the connecting piece as an inner mold.

Preferably, the upper cover and the lower cover are axially connected and thermally fused together.

Preferably, the upper surface of the connecting piece is provided with a flange plate, the flange plate is provided with a plurality of thread sleeves, and the thread sleeves are made of metal materials.

Preferably, the threaded sleeve is provided with internal threads, and the threaded sleeve is fixed on the flange plate through external threads in a threaded mode.

Preferably, the outside baffle of upper cover still is provided with the top separation board with between holding the chamber, and the inside of lower cover has round bottom divider board, top separation board and bottom divider board are along axial amalgamation, and the outside baffle of upper cover and the outside baffle of lower cover are along axial amalgamation, and the top separation board after the amalgamation forms first air chamber with the outside of bottom divider board, and top separation board and bottom divider inboard form the second air chamber, be provided with the gas pocket on top separation board and/or the bottom divider board, be provided with the solenoid valve on the gas pocket.

Preferably, a plurality of reinforcing ribs are respectively arranged between the upper separation plate and the outer side baffle of the upper cover and between the upper separation plate and the accommodating cavity; and a plurality of reinforcing ribs are arranged between the bottom separation plate and the outer side baffle of the lower cover.

Preferably, the bottom separation plate extends outwards in the axial direction to form an assembly opening, an anti-slip groove is formed in the surface of the assembly opening, and a circle of support ring is arranged on the inner side of the assembly opening.

The upper air chamber structure of the air spring provided by the invention has the advantages that: the upper cover is provided with an accommodating cavity for wrapping the connecting piece, the shock insulation block of the air spring shock absorber is installed through the connecting piece, connection with the shock absorber is achieved, and meanwhile, the sealing ring is arranged on the inner ring surface of the connecting piece, so that the sealing performance of the shock insulation block and the connecting piece can be guaranteed under the condition that the shock insulation block is installed; set up step type structure on the connecting piece, seal the space that holds between chamber and the connecting piece through the cooperation that holds chamber and connecting piece, prevent the gas leakage of air-supply chamber, ensure to satisfy air spring's user demand. The connecting piece, the upper cover and the lower cover are made of light materials so as to meet the requirement of light weight, and the connecting piece is matched with the upper cover in a mode of injection molding the upper cover on the connecting piece, so that the connecting strength and the matching compactness are improved; the first air chamber and the second air chamber are separated through the electromagnetic valve, so that the rigidity of the air spring can be changed, and the air spring is suitable for different road conditions.

Drawings

FIG. 1 is a schematic view of an upper air chamber configuration of an air spring provided in accordance with an embodiment of the present invention;

FIG. 2 is one of the cross-sectional views of the upper chamber structure of an air spring provided in accordance with an embodiment of the present invention;

FIG. 3 is a second cross-sectional view of the upper chamber structure of an air spring in accordance with an embodiment of the present invention;

FIG. 4 is a schematic view of an upper cover of an upper air chamber structure of an air spring provided in accordance with an embodiment of the present invention;

FIG. 5 is one of the schematic illustrations of the lower cover of the upper air chamber structure of an air spring provided in accordance with an embodiment of the present invention;

FIG. 6 is a second schematic view of a lower cover of an upper air chamber structure of an air spring according to an embodiment of the present invention;

shown in the figure: 1. an upper cover; 11. an upper partition plate; 2. a lower cover; 21. a bottom divider plate; 22. an assembly port; 23. a support ring; 24. a platform; 3. an accommodating chamber; 31. a second seal ring; 4. a connecting member; 41. a flange plate; 42. a threaded sleeve; 43. a kidney-shaped hole; 51. a first air chamber; 52. a second air chamber; 53. air holes; 54. and (5) reinforcing ribs.

Detailed Description

To make the objects, technical solutions and advantages of the present invention more apparent, the technical solutions of the present invention are described below in detail and completely with reference to the accompanying drawings, and it is apparent that the described embodiments are some, but not all embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

With reference to fig. 1 and 2, the present embodiment provides an upper air chamber structure of an air spring, including an upper cover 1 and a lower cover 2 that can be axially assembled, where an accommodating cavity 3 is formed inside the upper cover, a connecting member 4 that is coaxial with the upper cover 1 is placed inside the accommodating cavity 3, the connecting member 4 has a through assembly hole (not shown) along the axial direction, inner and outer annular surfaces of the connecting member 4 are all wrapped by the accommodating cavity 3, an inner annular surface of the connecting member 4 is set to be a stepped structure, the accommodating cavity 3 is adaptively matched with the outer annular surface of the connecting member 4, and a ring of sealing ring (not shown) is disposed between an upper end of the accommodating cavity 3 and the inner annular surface of the connecting member 4.

In the embodiment, the upper cover 1 is provided with the accommodating cavity 3 for wrapping the connecting piece 4, the shock insulation block of the air spring shock absorber is arranged through the connecting piece 4 to realize the connection with the shock absorber, and meanwhile, the sealing ring is arranged on the inner ring surface of the connecting piece 4, so that the sealing performance between the shock insulation block and the connecting piece 4 can be ensured under the condition of installing the shock insulation block; set up step type structure on connecting piece 4, the cooperation through holding chamber 3 and connecting piece 4 is sealed the space that holds between chamber 3 and the connecting piece 4, prevents the gas leakage of last air chamber, ensures to satisfy air spring's user demand.

In this embodiment, connecting piece 4 uses the metal material, preferably the aluminum product to reduce air spring's quality, upper cover 1 and lower cover 2 are glass fiber reinforced nylon material, specifically are nylon 66 glass fiber, have the advantage that has the light from the demand that can satisfy atmospheric pressure intensity, accord with the demand of whole car lightweight, with connecting piece 4 whole embedding upper cover 1 in, can improve structural strength when reducing structure weight.

Referring to fig. 1 again, the flange plate 41 is disposed on the upper surface of the connecting member 4, three threaded holes (not shown) are uniformly formed in the flange plate 41 along the circumferential direction, threaded sleeves 42 are disposed in the threaded holes, the threaded sleeves 42 are made of metal, in this embodiment, iron threaded sleeves are used to improve the strength of the threaded sleeves 42 when being connected with other components, and the threaded sleeves 42 can be connected with a vehicle body, preferably, the threaded sleeves 42 have external threads to be fixed on the flange plate 41 by screwing and have internal threads to be matched with the vehicle body by screwing.

Connecting piece 4 can be directly pressed into through the mode of pressing and hold chamber 3 in, also can realize connecting piece 4 and the assembly that holds chamber 3 through the mode of moulding plastics, it is concrete, when moulding plastics, regard as the inner formword with connecting piece 3, according to the design exterior sheathing of upper cover 1's concrete structure adaptability, through connecting piece 3 and exterior sheathing cooperation, mould plastics in pouring the raw materials into the mould, thereby obtain upper cover 1 with connecting piece 4 complete matching, refer to figure 1, still be provided with waist type hole 43 next to thread bush 42 in this embodiment, waist type hole is used for as the entry of material when moulding plastics, make things convenient for the material of moulding plastics to flow in and gas outgoing. When production, no matter adopt to press to join in marriage or mould plastics and connect the cooperation that realizes upper cover 1 and connecting piece 4, all can't avoid completely holding the existence in the installation space between chamber 3 and the connecting piece 4, and can effectually prevent gas leakage through the design of sealing ring, reduce gas leakage's probability through the double seal.

Referring to fig. 3, when the connecting member 4 is press-fitted to the upper cover 1, a gap is formed between the connecting member 4 and the accommodating chamber 3, and a second sealing ring 31 is further disposed between the accommodating chamber 3 and an outer circumferential surface of the connecting member 4 to improve a sealing effect.

Referring to fig. 3, 4 and 5, an upper separation plate 11 is further disposed between the outer baffle of the upper cover 1 and the accommodating cavity 3, a circle of lower separation plate 21 is disposed inside the lower cover 2, the upper separation plate 11 and the lower separation plate 21 can be axially split, the outer baffle of the upper cover 1 and the outer baffle of the lower cover 2 can also be axially split, a first air chamber 51 is formed outside the split upper separation plate 11 and lower separation plate 21, a second air chamber 21 is formed inside the upper separation plate 11 and lower separation plate 21, an air hole 53 is disposed on the upper separation plate 11 and/or lower separation plate 21, an electromagnetic valve (not shown) is disposed on the air hole 53, and when the electromagnetic valve is closed, only the first air chamber 51 works when the air spring is used, and the rigidity of the air spring is relatively large; when the solenoid valve is opened, the first air chamber 51 is communicated with the second air chamber 52, and the rigidity is reduced, so that the adjustment of different rigidities is realized to adapt to different road conditions.

A plurality of reinforcing ribs 54 are respectively arranged between the upper partition plate 11 and the outer side baffle of the upper cover 1 and between the upper partition plate and the accommodating cavity 3, and similarly, a plurality of reinforcing ribs 54 are also arranged between the lower partition plate 21 and the outer side baffle of the lower cover 2, so that the strength of the upper cover 1 and the lower cover 2 is improved, and in order to keep the smoothness of the first air chamber 51, through holes are adaptively formed on the reinforcing ribs 54 as required.

The upper cover 1 and the lower cover 2 can be connected by a buckle structure, in this embodiment, in order to ensure the sealing effect, the upper cover 1 and the lower cover 2 are fixedly connected together after being melted, and specifically, the upper cover 1 and the lower cover 2 can be heated and pressurized by infrared rays or iron plates to be melted together.

Referring to fig. 4, the lower port of the accommodating cavity 3 is circumferentially provided with a protruding structure capable of cooperating with a buffer part to fix the air spring. The specific structure can be designed adaptively according to the structure of the buffer part.

Referring to fig. 6, the bottom separation plate 21 extends axially outward to form an assembly opening 22, and an anti-slip groove is formed in the outer surface of the assembly opening 22, so that the assembly with the air spring bladder is facilitated, the embedding effect is improved, and the pull-off resistance is improved. With reference to fig. 2, a ring of support ring 23 is provided inside the fitting opening 22 to improve the structural strength of the fitting opening 22 and the radial rigidity when assembled with the bladder, said support ring 23 preferably being of a ferrous material.

Further, it is provided with two platforms 24 still to symmetry on the lower cover 2, is provided with the air cock on one of them platform 24, and the purpose that sets up two platforms is when a plurality of air spring symmetries set up, need set up the air cock in relative one side, then the lower cover 2 on the left and right sides can use same set of mould production, and the trompil or the equal trompil of both sides shutoff when moulding plastics of trompil can after processing is accomplished.

The use method of the upper air chamber structure of the air spring provided by the embodiment is as follows: the connecting piece 4 is connected with a shock insulation block of a shock absorber, an upper air chamber structure is fixedly connected with an automobile body through a threaded sleeve 42, an assembly opening 22 of a lower cover 2 is fixed with the upper end of a leather bag in a clamping mode and ensures sealing, the lower end of the leather bag is connected with a piston in a buckling mode, the piston is relatively fixed with the shock absorber, when a wheel jumps, the leather bag can be turned over, flexible connection between the automobile body and the wheel is achieved, the wheel jumps can be buffered through compression of a closed air chamber, and the shock insulation block is used as an elastic element of a chassis suspension system.

The above examples are only intended to illustrate the technical solution of the present invention, but not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; and such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions of the embodiments of the present invention.