Long-stroke multi-cavity air spring

Abstract

The utility model relates to the technical field of vehicles, in particular to a long-stroke multi-cavity air spring which comprises a shock absorber cylinder barrel, a shock absorber piston rod, a linear bearing, a first air spring, an air spring connector and a second air spring. The air spring connector drives the linear bearing to move rightwards, in the process that the linear bearing moves rightwards, the air spring connector moves rightwards to compress the second air spring, and when the second air spring is inflated, due to the fact that the end of the second air spring is fixedly installed outside a cylinder barrel of the shock absorber, the second air spring can be inflated, and the second air spring can be compressed. Therefore, the first air spring is compressed through cooperation of the air connector and the linear bearing, and adjustment of different rigidities and strokes of the device under the long stroke is achieved through balance and adjustment of the first air spring and the second air spring.

Description

Technical Field

[0001] The utility model relates to the technical field of vehicles, in particular to a long-stroke multi-cavity air spring. Background Art

[0002] Air suspension is a vehicle suspension system that typically includes components such as air springs, air pressure regulators, and compressors. In air suspension, air springs can be divided into single-chamber air springs and multi-chamber air springs. Single-chamber air springs often have only one main chamber, while multi-chamber air springs consist of a main chamber and at least one secondary chamber. Taking a dual-chamber air spring as an example, in the low-stiffness state, the main and secondary chambers are connected for operation; in the high-stiffness state, the main and secondary chambers are separated, with only the main chamber being used for operation. Unlike single-chamber air springs, multi-chamber air springs achieve multi-level adjustment of spring stiffness, allowing for a trade-off and control between smoothness and handling stability.

[0003] However, in traditional multi-chamber air spring systems, once the structure is determined, its maximum stroke cannot be changed, which limits the adaptability and flexibility of the air spring. Summary of the Invention

[0004] The purpose of the utility model is to provide a long-stroke multi-chamber air spring to solve the problem in traditional multi-chamber air spring systems that once the structure is determined, its maximum stroke cannot be changed, which limits the adaptability and flexibility of the air spring.

[0005] To achieve the above-mentioned objectives, the utility model provides a long-stroke multi-chamber air spring, which includes a shock absorber cylinder, a shock absorber piston rod, a linear bearing, a first air spring, an air spring connector and a second air spring. The shock absorber piston rod is slidingly arranged inside the shock absorber cylinder, the linear bearing is arranged on the outside of the shock absorber cylinder, and the air spring connector is arranged on the outside of the linear bearing. One end of the first air spring is fixed to the end of the shock absorber piston rod away from the shock absorber cylinder, and the end of the air spring connector is embedded in the cavity of the other end of the first air spring. One end of the second air spring is fixedly connected to the end of the shock absorber cylinder away from the shock absorber piston rod, and the air spring connector is embedded in the cavity of the other end of the second air spring away from the end of the first air spring.

[0006] An air spring support plate is provided outside the end of the shock absorber cylinder away from the shock absorber piston rod, and an end of the second air spring away from the air spring connector is fixedly connected to the air spring support plate.

[0007] In which, the first stroke segment and the second stroke segment are respectively provided at the two ends of the outside of the air spring connector, the first air spring is provided with a first deformation segment at one end close to the air spring connector, and the first deformation segment is adapted to the first stroke segment, and the second air spring is provided with a second deformation segment at one end close to the air spring connector, and the second deformation segment is adapted to the second stroke segment.

[0008] Wherein, the first travel section and the second travel section are both provided with a limiting protrusion at one end facing each other.

[0009] The utility model provides a long-stroke multi-chamber air spring, comprising a shock absorber cylinder, a shock absorber piston rod, a linear bearing, a first air spring, an air spring connector and a second air spring. The first air spring and the second air spring can independently adjust the air pressure. When the first air spring is inflated, the first air spring drives the shock absorber piston rod to move to the left while driving the linear bearing to move to the right through the air spring connector. During the movement of the linear bearing to the right, the second air spring is compressed by moving to the right through the air spring connector. When the second air spring is inflated, since the end of the second air spring is fixedly mounted on the outside of the shock absorber cylinder, the first air spring is compressed through the cooperation of the air connector and the linear bearing. By balancing and adjusting the first air spring and the second air spring, the adjustment of different stiffness and stroke of the device under long stroke is achieved. BRIEF DESCRIPTION OF THE DRAWINGS

[0010] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0011] Figure 1 It is a structural schematic diagram of the long-stroke multi-cavity air spring provided by the utility model.

[0012] 1- shock absorber cylinder, 2- shock absorber piston rod, 3- linear bearing, 4- first air spring, 5- air spring connector, 6- second air spring, 7- air spring support plate, 8- first stroke section, 9- second stroke section, 10- first deformation section, 11- second deformation section, 12- limiting protrusion. DETAILED DESCRIPTION

[0013] The following describes in detail embodiments of the present invention, examples of which are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to explain the present invention, and should not be construed as limiting the present invention.

[0014] See also Figure 1 The utility model provides a long-stroke multi-chamber air spring, which includes a shock absorber cylinder 1, a shock absorber piston rod 2, a linear bearing 3, a first air spring 4, an air spring connector 5 and a second air spring 6. The shock absorber piston rod 2 is slidingly arranged inside the shock absorber cylinder 1, the linear bearing 3 is arranged on the outside of the shock absorber cylinder 1, and the air spring connector 5 is arranged on the outside of the linear bearing 3. One end of the first air spring 4 is fixed to the end of the shock absorber piston rod 2 away from the shock absorber cylinder 1, and the end of the air spring connector 5 is embedded in the cavity of the other end of the first air spring 4. One end of the second air spring 6 is fixedly connected to the end of the shock absorber cylinder 1 away from the shock absorber piston rod 2, and the end of the air spring connector 5 away from the first air spring 4 is embedded in the cavity of the other end of the second air spring 6.

[0015] In this embodiment, the air pressure of the first air spring 4 and the second air spring 6 can be adjusted independently. When the first air spring 4 is inflated, the first air spring 4 drives the shock absorber piston rod 2 to move to the left, and drives the linear bearing 3 to move to the right through the air spring connector 5. During the movement of the linear bearing 3 to the right, the air spring connector 5 moves to the right to compress the second air spring 6. When the second air spring 6 is inflated, since the end of the second air spring 6 is fixedly mounted on the outside of the shock absorber cylinder 1, the first air spring 4 is compressed through the cooperation of the air connector and the linear bearing 3. By balancing and adjusting the first air spring 4 and the second air spring 6, the adjustment of different stiffness and stroke of the device under long stroke is achieved.

[0016] Furthermore, an air spring support plate 7 is provided on the outside of the end of the shock absorber cylinder 1 away from the shock absorber piston rod 2 , and the end of the second air spring 6 away from the air spring connector 5 is fixedly connected to the air spring support plate 7 .

[0017] In this embodiment, the air spring support plate 7 is provided so that the end of the second air spring 6 away from the air spring connector 5 is fixedly mounted on the outside of the shock absorber cylinder 1 .

[0018] Furthermore, the two ends of the outside of the air spring connector 5 are respectively provided with a first stroke segment 8 and a second stroke segment 9, the first air spring 4 is provided with a first deformation segment 10 at one end close to the air spring connector 5, and the first deformation segment 10 is adapted to the first stroke segment 8, and the second air spring 6 is provided with a second deformation segment 11 at one end close to the air spring connector 5, and the second deformation segment 11 is adapted to the second stroke segment 9.

[0019] Furthermore, a limiting protrusion 12 is provided at the facing ends of the first travel section 8 and the second travel section 9 .

[0020] In this embodiment, the setting of the limiting protrusion 12 limits the reset state of the first air spring 4 and the second air spring 6 .

[0021] The above disclosure is only a preferred embodiment of the present invention, and certainly cannot be used to limit the scope of rights of the present invention. Ordinary technicians in this field can understand that all or part of the processes of the above embodiment and equivalent changes made in accordance with the claims of the present invention are still within the scope of the utility model.

Claims

1. A long-stroke multi-chamber air spring, characterized in that: It includes a shock absorber cylinder, a shock absorber piston rod, a linear bearing, a first air spring, an air spring connector and a second air spring, the shock absorber piston rod is slidingly arranged inside the shock absorber cylinder, the linear bearing is arranged outside the shock absorber cylinder, the air spring connector is arranged outside the linear bearing, one end of the first air spring is fixed to the end of the shock absorber piston rod away from the shock absorber cylinder, the end of the air spring connector is embedded in the cavity of the other end of the first air spring, one end of the second air spring is fixedly connected to the end of the shock absorber cylinder away from the shock absorber piston rod, and the air spring connector is embedded in the cavity of the other end of the second air spring away from the first air spring.

2. The long-stroke multi-chamber air spring according to claim 1, characterized in that: An air spring support plate is provided on the outside of one end of the shock absorber cylinder away from the shock absorber piston rod, and one end of the second air spring away from the air spring connector is fixedly connected to the air spring support plate.

3. The long-stroke multi-chamber air spring according to claim 2, characterized in that: The first and second travel segments are respectively provided at the two ends of the outside of the air spring connector. The first air spring is provided with a first deformation segment at one end close to the air spring connector, and the first deformation segment is adapted to the first travel segment. The second air spring is provided with a second deformation segment at one end close to the air spring connector, and the second deformation segment is adapted to the second travel segment.

4. The long-stroke multi-chamber air spring according to claim 3, characterized in that: The first travel section and the second travel section have opposing ends each provided with a limiting protrusion.

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