Automobile air spring

Abstract

This utility model discloses an automotive air spring, relating to the field of automotive suspension systems. The automotive air spring includes an air spring unit comprising a spring shell, a first mounting base, and a second mounting base. Both ends of the spring shell are connected to the first and second mounting bases, respectively. Sealing components are provided at the connection points between both ends of the spring shell and the first and second mounting bases. Each sealing component includes a connecting ring and a compression ring. A compression groove is formed between the connecting ring and the first or second mounting base. The compression ring is located at both ends of the spring shell and inserted into the compression groove. Both the compression groove and the compression ring have a G-shaped cross-section. In this automotive air spring, the G-shaped compression groove and the compression ring in the sealing component fit tightly together. When the spring shell is inflated, the air pressure causes the contact surfaces of the compression ring and the compression groove to fit more tightly, forming a multiple sealing effect and significantly reducing the probability of air leakage.

Description

Technical Field

[0001] This utility model relates to the field of automotive suspension system technology, specifically to an automotive air spring. Background Technology

[0002] In automotive suspension systems, the air spring assembly is a core component for achieving vehicle shock absorption, support, and attitude adjustment. Its sealing and structural stability directly affect the vehicle's driving safety and comfort.

[0003] In existing air springs, the connection between the air spring bladder and the mounting base often suffers from air pressure leakage due to an unreasonable sealing structure design. Furthermore, the sealing components are prone to relative displacement under long-term vibration and impact, further exacerbating the risk of leakage. In addition, the connection structure between some air springs and the vehicle suspension is not strong enough, making them susceptible to loosening or deformation during load-bearing processes, thus affecting the service life of the assembly. Utility Model Content

[0004] To address the shortcomings of existing technologies, this utility model provides an automotive air spring that solves the problems of poor sealing, easy displacement of sealing components, and insufficient reliability of installation and connection structures in existing automotive air springs.

[0005] To achieve the above objectives, this utility model provides the following technical solution: an automotive air spring, comprising an air spring unit, the air spring unit including a bladder, a first mounting base, and a second mounting base, the two ends of the bladder being connected to the first mounting base and the second mounting base respectively, and a sealing component being provided at the connection points between the two ends of the bladder and the first and second mounting bases, the sealing component including a connecting ring and a compression ring, the connecting ring forming a compression groove with the first mounting base or the second mounting base, the compression ring being disposed at both ends of the bladder and inserted into the compression groove, and the cross-section of both the compression groove and the compression ring being G-shaped.

[0006] Preferably, a limiting block is fixedly connected to the inner wall of the extrusion groove, and the limiting block is provided with multiple positioning grooves. A positioning block is fixedly provided on the extrusion ring, and the positioning block is inserted into the positioning groove.

[0007] Preferably, the cross-sections of both the positioning groove and the positioning block are trapezoidal.

[0008] Preferably, the air spring unit is provided with a piston rod and a mounting plate at both ends, and the air spring unit is mounted on the vehicle suspension via the piston rod and the mounting plate.

[0009] Preferably, a connecting block is installed at the bottom of the piston rod, and a through connecting hole is provided on the connecting block.

[0010] Preferably, the mounting plate has multiple through mounting holes, and multiple reinforcing ribs are fixedly provided between the mounting plate and the air spring unit.

[0011] Its beneficial effects are as follows: 1. In this car air spring, the G-shaped cross-section extrusion groove and extrusion ring in the sealing assembly fit tightly together. When the bladder is inflated, the air pressure will cause the contact surface between the extrusion ring and the extrusion groove to fit more tightly, forming a multiple sealing effect and greatly reducing the probability of air leakage.

[0012] 2. The positioning groove on the limit block and the positioning block on the extrusion ring of this car air spring are matched with trapezoidal cross sections. This not only guides the precise docking during installation, but also effectively restricts the positioning block from falling out in the opposite direction, preventing the sealing components from being misaligned during vibration and ensuring the durability of the sealing effect. Attached Figure Description

[0013] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0014] Figure 1 This is a schematic diagram of the overall structure of this utility model; Figure 2 This is a schematic diagram of the air spring unit of this utility model; Figure 3 This is a partial sectional view of the connection between the outer skin and the second mounting base of this utility model; Figure 4 This is a schematic diagram of the installation disk of this utility model.

[0015] In the figure: 1. Air spring unit; 11. Air spring skin; 12. First mounting base; 13. Second mounting base; 14. Sealing assembly; 141. Connecting ring; 142. Extrusion groove; 143. Extrusion ring; 144. Limiting block; 145. Positioning block; 2. Piston rod; 21. Connecting block; 3. Mounting plate; 31. Mounting hole; 32. Reinforcing rib. Detailed Implementation

[0016] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions in the embodiments of this utility model are described clearly and completely. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0017] To better understand the above technical solutions, the following will provide a detailed explanation of the technical solutions in conjunction with the accompanying drawings and specific implementation methods.

[0018] This utility model discloses an automotive air spring, according to the attached... Figure 1-3 As shown, the air spring unit 1 includes a bladder 11, a first mounting base 12, and a second mounting base 13. Both ends of the bladder 11 are connected to the first mounting base 12 and the second mounting base 13, respectively. Sealing components 14 are provided at the connection points between the two ends of the bladder 11 and the first mounting base 12 and the second mounting base 13. The sealing components 14 include a connecting ring 141 and a compression ring 143. A compression groove 142 is formed between the connecting ring 141 and the first mounting base 12 or the second mounting base 13. The compression ring 143 is disposed at both ends of the bladder 11 and inserted into the compression groove 142. The cross-sections of the compression groove 142 and the compression ring 143 are both G-shaped.

[0019] In the sealing assembly 14, the G-shaped cross-section extrusion groove 142 and the extrusion ring 143 fit tightly together. When the bladder 11 is filled with air, the air pressure will cause the contact surface between the extrusion ring 143 and the extrusion groove 142 to fit more tightly, forming a multi-seal effect and greatly reducing the probability of air leakage.

[0020] According to the appendix Figure 3 As shown, further, a limiting block 144 is fixedly connected to the inner wall of the extrusion groove 142, and multiple positioning grooves are provided on the limiting block 144. A positioning block 145 is fixedly provided on the extrusion ring 143, and the positioning block 145 is inserted into the positioning groove.

[0021] The positioning groove on the limiting block 144 and the positioning block 145 on the extrusion ring 143 are fitted with trapezoidal cross sections, which can guide the precise docking during installation and effectively limit the positioning block 145 from falling out in the opposite direction, preventing the sealing component 14 from being misaligned during vibration and ensuring the durability of the sealing effect.

[0022] Both the positioning groove and the positioning block 145 have trapezoidal cross sections.

[0023] According to the appendix Figure 1 As shown, the air spring unit 1 is further provided with a piston rod 2 and a mounting plate 3 at both ends, and the air spring unit 1 is mounted on the vehicle suspension through the piston rod 2 and the mounting plate 3.

[0024] A connecting block 21 is installed at the bottom of the piston rod 2, and a through connecting hole is provided on the connecting block 21.

[0025] According to the appendix Figure 4As shown, the mounting plate 3 further has multiple through mounting holes 31, and multiple reinforcing ribs 32 are fixedly provided between the mounting plate 3 and the air spring unit 1.

[0026] The piston rod 2 is securely connected to the vehicle suspension through the connecting hole of the connecting block 21 and the mounting plate 3 through multiple mounting holes 31. The reinforcing rib 32 between the mounting plate 3 and the air spring unit 1 enhances the load-bearing capacity of the mounting part and reduces structural deformation caused by stress concentration.

[0027] Working principle: The automotive air spring is installed on the vehicle suspension via piston rod 2 and mounting plate 3. An external air source inflates the bladder 11, causing it to expand under air pressure and create elastic support, thus cushioning the impact of road surfaces during vehicle operation. At this time, the internal air pressure of the bladder 11 exerts an outward thrust on the compression rings 143 at both ends, ensuring a tight fit between the G-shaped compression rings 143 and the inner wall of the G-shaped compression groove 142. Combined with the limiting effect of the positioning block 145 and the positioning groove, this ensures that the sealing assembly 14 remains secure and leak-free. When the vehicle vibrates or experiences changes in load, piston rod 2 and mounting plate 3 transmit force through connecting block 21 and mounting hole 31, while reinforcing rib 32 disperses the force on mounting plate 3, ensuring the overall stability of the assembly structure.

[0028] When the vehicle is in different road conditions, the air spring assembly will adjust accordingly. For example, when the vehicle is loaded with more cargo, the body tends to sag. At this time, the external air source will continue to inflate the bladder 11, the bladder 11 will expand further, the internal air pressure will increase, and the elastic support force will increase accordingly, thereby offsetting the additional load and maintaining the vehicle height.

[0029] When the vehicle is traveling on a bumpy road and experiences an upward impact, the piston rod 2 moves upward, compressing the air spring unit 1. The gas inside the bladder 11 is compressed, causing a sudden increase in air pressure and generating a significant rebound force. This rebound force cushions the upward impact and reduces vehicle vibration. During this process, the G-shaped compression ring 143, under the influence of the air pressure inside the bladder 11, fits more tightly with the G-shaped compression groove 142, further ensuring sealing performance and preventing gas leakage from affecting the cushioning effect.

[0030] Meanwhile, the positioning block 145 is firmly engaged in the positioning groove to prevent the compression ring 143 from shifting within the compression groove 142, ensuring that the sealing assembly 14 is always in a stable working state. When bearing the force transmitted from the vehicle body, the reinforcing rib 32 on the mounting plate 3 evenly distributes the force to various parts of the mounting plate 3, avoiding excessive local stress that could damage the mounting plate 3, thereby ensuring that the entire air spring assembly can function continuously and stably.

[0031] When the vehicle needs to lower its height, some of the gas inside the bladder 11 is expelled, the internal air pressure decreases, the bladder 11 contracts, and the vehicle body lowers accordingly. During the gas expulsion process, the sealing assembly 14 maintains good sealing performance to prevent disorderly gas leakage and ensure the accuracy of vehicle height adjustment.

[0032] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0033] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claims. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. An automotive air spring, comprising an air spring unit (1), characterized in that, The air spring unit (1) includes a bladder (11), a first mounting base (12), and a second mounting base (13). The two ends of the bladder (11) are connected to the first mounting base (12) and the second mounting base (13) respectively. A sealing component (14) is provided at the connection between the two ends of the bladder (11) and the first mounting base (12) and the second mounting base (13). The sealing component (14) includes a connecting ring (141) and a compression ring (143). A compression groove (142) is formed between the connecting ring (141) and the first mounting base (12) or the second mounting base (13). The compression ring (143) is provided at both ends of the bladder (11) and inserted into the compression groove (142). The cross-section of the compression groove (142) and the compression ring (143) are both set to G-shape.

2. The automotive air spring according to claim 1, characterized in that, A limiting block (144) is fixedly connected to the inner wall of the extrusion groove (142), and multiple positioning grooves are provided on the limiting block (144). A positioning block (145) is fixedly provided on the extrusion ring (143), and the positioning block (145) is inserted into the positioning groove.

3. The automotive air spring according to claim 2, characterized in that, The cross-sections of both the positioning groove and the positioning block (145) are trapezoidal.

4. The automotive air spring according to claim 1, characterized in that, The air spring unit (1) is provided with a piston rod (2) and a mounting plate (3) at both ends, and the air spring unit (1) is mounted on the vehicle suspension through the piston rod (2) and the mounting plate (3).

5. The automotive air spring according to claim 4, characterized in that, A connecting block (21) is installed at the bottom of the piston rod (2), and a through connecting hole is provided on the connecting block (21).

6. The automotive air spring according to claim 4, characterized in that, The mounting plate (3) has multiple through mounting holes (31), and multiple reinforcing ribs (32) are fixedly arranged between the mounting plate (3) and the air spring unit (1).

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