CN216382350U

CN216382350U - Novel air spring

Info

Publication number: CN216382350U
Application number: CN202123043622.7U
Authority: CN
Inventors: 单丽丽
Original assignee: Shandong Hongguang Rubber Technology Co ltd
Current assignee: Shandong Hongguang Rubber Technology Co ltd
Priority date: 2021-12-07
Filing date: 2021-12-07
Publication date: 2022-04-26
Anticipated expiration: 2031-12-07

Abstract

The utility model belongs to the technical field of shock absorbers, and particularly relates to a novel air spring which comprises a rubber piece, wherein a first bearing cavity for containing air is arranged in the rubber piece, openings communicated with the first bearing cavity are respectively arranged at the upper end and the lower end of the rubber piece, the upper part of the rubber piece is hermetically connected with a sealing assembly for plugging the upper opening, the lower part of the rubber piece is hermetically connected with a piston for plugging the lower opening, a second bearing cavity is arranged in the piston, and the top of the piston is provided with a communication hole for communicating the second bearing cavity with the first bearing cavity; the utility model has light weight, is easy to install, can improve the stability, the comfort and the controllability of the vehicle, and is suitable for the light weight development of commercial vehicles.

Description

Novel air spring

Technical Field

The utility model belongs to the technical field of shock absorbers, and particularly relates to a novel air spring.

Background

The shock absorber is an apparatus for reducing the attenuation of the vibration of the frame and the vehicle body so as to improve the running smoothness (comfort) of the automobile, and the shock absorber is arranged in a suspension system of most vehicles.

At present, a part of domestic commercial vehicles are matched with an air suspension, but most of air springs and the suspension in the market are connected and are provided with two metal mounting plates, the self weight of each mounting plate is far greater than the weight of an installed air bag, the aim of light weight is hardly achieved, and the air suspension is difficult to match and install.

SUMMERY OF THE UTILITY MODEL

The utility model aims to solve the main technical problem of providing a novel air spring which is light in weight, easy to install, capable of improving the stability, comfort and controllability of a vehicle and suitable for light-weight development of commercial vehicles.

In order to solve the technical problems, the utility model provides the following technical scheme:

the utility model provides a novel air spring, includes the rubber spare, is provided with the first chamber that bears that is used for holding the air in the rubber spare, the upper and lower both ends of rubber spare all be provided with the first opening that bears the weight of the chamber intercommunication, the upper portion sealing connection of rubber spare has the seal assembly who is used for shutoff upper shed, the lower part sealing connection of rubber spare has the piston that is used for shutoff lower shed, is provided with the second in the piston and bears the weight of the chamber, the top of piston is provided with the intercommunicating pore that is used for communicateing second bearing chamber and first bearing chamber.

The following is a further optimization of the above technical solution of the present invention:

the piston comprises a first supporting piece, the lower part of the first supporting piece is fixedly connected with a second supporting piece, and the communication hole is formed in the top of the first supporting piece.

Further optimization: the upper portion of the first supporting piece is provided with a clamping ring groove, one end of the rubber piece, close to the piston, is integrally and fixedly connected with a toe opening, and the toe opening is clamped in the clamping ring groove.

Further optimization: the section of the toe mouth is in a trapezoidal structure, and a mechanism steel wire ring is arranged in the toe mouth.

Further optimization: the cross section of the supporting piece comprises a first surrounding connecting edge, a second surrounding connecting edge and a third surrounding connecting edge which are sequentially connected in an integrated mode, and an included angle alpha is formed between the second surrounding connecting edge and the third surrounding connecting edge.

Further optimization: the cross section of the second supporting piece is in a trapezoidal structure.

Further optimization: the bottom surface of the second supporting piece is fixedly connected with a connecting screw rod.

Further optimization: the sealing component comprises a cover plate, a connecting plate is fixedly connected to the top surface of the cover plate, and a plurality of connecting holes are formed in the connecting plate.

The utility model has simple structure and convenient installation, can realize automatic adjustment of the height of the vehicle body in the stroke range, has low natural frequency of the rubber air spring and good damping and sound insulation effects, can greatly improve the smoothness and comfort of the running of the vehicle, and also improves the service life of the vehicle;

through the split design of the piston and the rubber part, the replacement cost of a client is saved to the greatest extent, the piston is simple and reasonable in structure, light in weight and large in bearing capacity, the cover plate and the piston are provided with accessories which can be directly connected with the suspension arm, heavy additional mounting discs are omitted, the assembly weight is greatly reduced, and the purpose of light weight is achieved.

The utility model is further illustrated with reference to the following figures and examples.

Drawings

FIG. 1 is a schematic overall structure diagram of an embodiment of the present invention;

FIG. 2 is a schematic structural view of a piston according to an embodiment of the present invention;

FIG. 3 is a schematic view of a portion of the enlarged structure at A in FIG. 1;

fig. 4 is a partially enlarged structural diagram of a portion B in fig. 2.

In the figure: 1-rubber part; 101-toe mouth; 2-cover plate; 3-welding a steel wire ring; 4-connecting plates; 401-connecting hole; 5-a communicating hole; 6-a piston; 601-a first support; 6011-a first circumscribing edge; 6012-a second circumscribing edge; 6013-third bounding edge; 602-a second support; 603-clamping ring grooves; 7-connecting a screw rod; 8-machine-made steel wire ring; 9-an air inlet nozzle; 10-a first load-bearing chamber; 11-second bearing chamber.

Detailed Description

Example (b):

as shown in fig. 1-4, a novel air spring comprises a rubber member 1, a first bearing cavity 10 for containing air is arranged in the rubber member 1, openings communicated with the first bearing cavity 10 are arranged at the upper end and the lower end of the rubber member 1, a sealing component for sealing the upper opening is hermetically connected to the upper portion of the rubber member 1, and a piston 6 for sealing the lower opening is hermetically connected to the lower portion of the rubber member 1.

The sealing assembly and the piston 6 are located on the same axis and are arranged in parallel at intervals, and the rubber part 1 can axially extend and retract along the axis.

A second bearing cavity 11 is arranged in the piston 6, and a communication hole 5 for communicating the second bearing cavity 11 with the first bearing cavity 10 is arranged at the top of the piston 6.

By the design, when the first bearing cavity 10 is inflated, air enters the second bearing cavity 11 through the communication hole 5, and the piston 6 is effectively supported by high-pressure gas in the second bearing cavity 11, so that the bearing capacity of the piston 6 is improved although the structure of the piston 6 is simplified and the weight of the piston 6 is reduced, and the service life of the device is prolonged.

The piston 6 includes a first support 601, and a second support 602 is fixedly connected to a lower portion of the first support 601.

The communication hole 5 is opened at the top of the first support 601.

The upper part of the first supporting member 601 is provided with a clamping ring groove 603, one end of the rubber member 1 close to the piston 6 is integrally and fixedly connected with a toe opening 101, and the toe opening 101 is clamped in the clamping ring groove 603.

Rubber spare 1 and piston 6 adopt the components of a whole that can function independently design, make things convenient for rubber spare 1 and piston 6 to install fast, and after being full of the air in first bearing cavity 10, toe mouth 101 is in joint annular 603 just firm, has realized rubber spare 1 and piston 6's firm sealing connection.

A machined steel traveler 8 is provided inside the toe opening 101.

This arrangement increases the strength of the toe opening 101 and also enhances the stability of the connection between the rubber member 1 and the piston 6 in the sealing connection with the toe opening 101.

The toe opening 101 has a trapezoidal cross-section.

By the design, the contact area of the toe opening 101 and the clamping ring groove 603 is increased, so that the firmness of connection of the rubber part 1 and the piston 6 is further enhanced.

The cross section of the supporting member 601 includes a first enclosing edge 6011, a second enclosing edge 6012 and a third enclosing edge 6013 integrally connected in sequence.

An included angle α is formed between second border 6012 and third border 6013.

The value of the angle alpha is 95 DEG + -1 deg.

By adopting the design, the toe opening 101 can be clamped into the clamping ring groove 603 more easily, so that the rubber part 1 and the piston 6 can be connected in a sealing way more easily.

The lower end of the supporting member 601 is fixedly connected with the second supporting member 602 by welding.

The second support 602 has a trapezoidal cross-section.

The bottom surface of the second supporting member 602 is fixedly connected with a connecting screw 7.

By the design, the connecting screw rod 7 can be fixedly connected with the lower arm of the vehicle suspension, and the connecting screw rod 7 is designed by adopting a single screw rod and can be directly connected with the lower arm of the suspension, so that a heavy mounting disc is omitted, and the overall weight of the device is further reduced.

The sealing component comprises a cover plate 2, a connecting plate 4 is fixedly connected to the top surface of the cover plate 2, and a plurality of connecting holes 401 are formed in the connecting plate 4.

The upper end of the rubber part 1 and the cover plate 2 are connected in a sealing mode through the crimping of a mechanical die.

The inner part of the upper end of the rubber part 1 is provided with a welding steel wire ring 3, which can achieve the effects of strengthening the sealing between the rubber part 1 and the cover plate 2 and preventing the separation of the rubber part and the cover plate.

An air inlet nozzle 9 for filling compressed air into the rubber member 1 is arranged on any side of the connecting plate 4 on the top surface of the cover plate 2.

The piston 6 is a lower connecting body of the air suspension of the truck and can be directly connected and fixed with a lower arm of the suspension, the mounting plate 4 is welded on the cover plate 2, and the suspension is connected with the suspension through the mounting plate 4 and the connecting hole 9, so that an original heavy upper additional mounting disc is omitted, and the purpose of light weight is achieved.

When the automatic automobile height adjusting device is used, compressed air is filled into the rubber piece 1 through the air inlet nozzle 9 to form an air spring, the air spring is an elastic element, air is used as an elastic medium, the functions of bearing and elasticity are realized by utilizing the plasticity of the air, and the automatic automobile height adjustment can be realized by controlling the pressure intensity of the compressed air in the rubber piece.

It will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in the embodiments described above without departing from the principles and spirit of the utility model, the scope of which is defined by the appended claims.

Claims

1. The utility model provides a novel air spring, includes rubber spare (1), is provided with the first bearing chamber (10) that are used for holding the air in rubber spare (1), and the upper and lower both ends of rubber spare (1) all are provided with the opening that communicates with first bearing chamber (10), its characterized in that: the upper portion sealing connection of rubber spare (1) has the seal assembly who is used for the shutoff to go up the open-ended, and the lower part sealing connection of rubber spare (1) has piston (6) that are used for the shutoff to go down the open-ended, is provided with second in piston (6) and bears chamber (11), and the top of piston (6) is provided with intercommunicating hole (5) that are used for communicateing second and bear chamber (11) and first bearing chamber (10).

2. The novel air spring of claim 1, wherein: the piston (6) comprises a first supporting piece (601), a second supporting piece (602) is fixedly connected to the lower portion of the first supporting piece (601), and a communication hole (5) is formed in the top of the first supporting piece (601).

3. The novel air spring of claim 2, wherein: the upper portion of the first supporting piece (601) is provided with a clamping ring groove (603), one end, close to the piston (6), of the rubber piece (1) is integrally and fixedly connected with a toe opening (101), and the toe opening (101) is clamped in the clamping ring groove (603).

4. The novel air spring of claim 3, wherein: the section of the toe opening (101) is in a trapezoidal structure, and a mechanism steel wire ring (8) is arranged in the toe opening (101).

5. The novel air spring of claim 4, wherein: the cross section of the supporting piece (601) comprises a first enclosing edge (6011), a second enclosing edge (6012) and a third enclosing edge (6013) which are integrally connected in sequence, and an included angle alpha is formed between the second enclosing edge (6012) and the third enclosing edge (6013).

6. The novel air spring of claim 5, wherein: the cross section of the second supporting piece (602) is in a trapezoidal structure.

7. The novel air spring of claim 6, wherein: the bottom surface of the second supporting piece (602) is fixedly connected with a connecting screw rod (7).

8. The novel air spring of claim 7, wherein: the sealing assembly comprises a cover plate (2), a connecting plate (4) is fixedly connected to the top surface of the cover plate (2), and a plurality of connecting holes (401) are formed in the connecting plate (4).