Bearing element of air bag and shock absorber series connection structure

Abstract

The utility model discloses a bearing element of an air bag and shock absorber serial connection structure, which relates to the technical field of shock absorbers and comprises a shock absorber assembly and an air bag main body, an upper end cover is fixedly arranged at one end of the air bag main body, an air bag piston is fixedly arranged at the other end of the air bag main body, and a lower bottom plate is tightly attached to the bottom end of the air bag piston. An air inlet is fixedly formed in the bottom end of the upper end cover, the lower bottom plate is welded to the shock absorber body, the air inlet is communicated with the inner space of the air bag, and the air bag is inflated and deflated through the air inlet.

Description

Technical Field

[0001] The utility model relates to the technical field of shock absorbers, and specifically relates to a load-bearing element with a series structure of an airbag and a shock absorber. Background Technique

[0002] To improve the comfort of drivers and passengers, most air suspension systems for high-end passenger cars and commercial vehicle cabs use air suspension systems. When the vehicle encounters obstacles during driving, a shock-absorbing structure is required to absorb the impact energy of the wheels, usually an airbag or a shock-absorbing spring, thereby reducing the vibration of the vehicle body. It inflates the air chamber through an air pump to form an airbag, which is widely used in passenger cars and light truck models. Compared with traditional steel plates and shock absorbers, the airbag suspension has a shorter stroke, but can provide better comfort and stronger load-bearing capacity. When the spring or airbag absorbs energy, this energy is transferred to the spring or airbag, which will cause the spring or airbag to vibrate continuously, resulting in continuous bumping of the vehicle. At this time, an energy-dissipating shock-absorbing structure, usually a hydraulic shock absorber, is required to quickly convert the potential energy stored in the spring or airbag into heat energy and reduce the vibration of the vehicle body.

[0003] At present, most commercial vehicle airbags and shock absorbers are arranged separately, with a large number of parts, a large occupied space, complex assembly, and a large number of system fault points, thereby reducing the assembly efficiency and increasing the maintenance difficulty.

[0004] Based on this, a load-bearing element with a series structure of an airbag and a shock absorber is now provided, which can eliminate the disadvantages of existing devices. Content of the Utility Model

[0005] The purpose of the utility model is to provide a load-bearing element with a series structure of an airbag and a shock absorber to solve the problems of inconvenient assembly and saving installation space in the background technique.

[0006] To achieve the above purpose, the utility model provides the following technical solutions:

[0007] A load-bearing element with a series structure of an airbag and a shock absorber includes a shock absorber assembly and an airbag main body. One end of the airbag main body is fixedly provided with an upper end cover, the other end of the airbag main body is fixedly provided with an airbag piston, the bottom end of the airbag piston is closely attached to a lower bottom plate, the lower bottom plate is fixedly arranged on the shock absorber assembly, an air vent joint is arranged at the upper end of the upper end cover, a threaded rod is arranged at the output end of the shock absorber assembly, the threaded rod is threadedly connected with the upper end cover, and a buffer assembly for reducing the impact on the output end of the shock absorber assembly is arranged at the bottom end of the upper end cover.

[0008] Based on the above technical solutions, the utility model also provides the following optional technical solutions:

[0009] In an alternative embodiment: The buffer assembly includes a special-shaped nut, which is threadedly engaged with the threaded rod. A limit buffer block is rotatably provided at one end of the special-shaped nut, and a shock-absorbing spring is provided between the bottom end of the limit buffer block and the upper end of the shock absorber assembly.

[0010] In an alternative embodiment: A retaining ring is fixedly provided at the bottom end of the airbag piston.

[0011] In an alternative embodiment: A lifting lug is fixedly provided at the upper end of the upper end cap. A composite bushing is provided inside the lifting lug. An installation bracket is fixedly provided at one end of the shock absorber assembly. A plurality of sealing rings are provided at the connection between the airbag piston and the shock absorber assembly.

[0012] Compared with the prior art, the beneficial effects of the present utility model are as follows:

[0013] By providing a limit buffer block, a special-shaped nut and a shock-absorbing spring, the present utility model facilitates buffering of the output end of the shock absorber assembly, facilitates protection of the shock absorber assembly, and at the same time ensures reliable sealing inside the airbag through the first sealing ring and the second sealing ring on the airbag piston. At the same time, the structure of the present application is simple, saves space and reduces the difficulty of maintenance. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 is a schematic structural diagram of the present utility model.

[0015] Figure 2 is a schematic diagram of the internal structure of the airbag main body of the present utility model.

[0016] Figure 3 is a schematic diagram of the structure of the limit buffer block of the present utility model.

[0017] Annotation of reference numerals: 11 shock absorber assembly, 12 airbag main body, 13 upper end cap, 14 composite bushing, 15 ventilation joint, 16 limit buffer block, 17 special-shaped nut, 18 shock-absorbing spring, 19 airbag piston, 20 sealing ring, 21 lower bottom plate, 22 installation bracket, 23 retaining ring. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0018] In order to make the purpose, technical solutions and advantages of the present utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments.

[0019] In one embodiment, as Figures 1-3As shown in the figure, a load-bearing element with a series structure of an airbag and a shock absorber includes a shock absorber assembly 11 and an airbag body 12. One end of the airbag body 12 is fixedly provided with an upper end cover 13, and the other end of the airbag body 12 is fixedly provided with an airbag piston 19. The bottom end of the airbag piston 19 is closely attached to a lower bottom plate 21, and the lower bottom plate 21 is fixedly arranged on the shock absorber assembly 11. An air vent joint 15 is provided at the upper end of the upper end cover 13. A threaded rod is provided at the output end of the shock absorber assembly 11, and the threaded rod is threadedly connected to the upper end cover 13. A buffer assembly for reducing the impact on the output end of the shock absorber assembly 11 is provided at the bottom end of the upper end cover 13. Through the buffer assembly, it is convenient to reduce the impact on the output end of the shock absorber assembly 11;

[0020] The buffer assembly includes a special-shaped nut 17, which is in threaded fit with the threaded rod. A limit buffer block 16 is rotatably arranged at one end of the special-shaped nut 17. A shock-absorbing spring 18 is provided between the bottom end of the limit buffer block 16 and the upper end of the shock absorber assembly 11. During use, when the output end of the shock absorber assembly 11 is compressed, the limit buffer block 16 is convenient for buffering, and at the same time, the shock-absorbing spring 18 is convenient for reducing the damage caused to the shock absorber assembly 11 by the impact.

[0021] A retaining ring 23 is fixedly provided at the bottom end of the airbag piston 19. During use, the retaining ring 23 is convenient for protecting the airbag body 12.

[0022] A lifting lug is fixedly provided at the upper end of the upper end cover 13. A composite bushing 14 is arranged inside the lifting lug. An installation bracket 22 is fixedly provided at one end of the shock absorber assembly 11. A plurality of sealing rings 20 are provided at the connection between the airbag piston 19 and the shock absorber assembly 11. During use, the composite bushing 14 and the installation bracket 22 are convenient for installing the upper end cover 13 and the shock absorber assembly 11, and the sealing rings 20 are convenient for increasing the sealing effect between the airbag piston 19 and the shock absorber assembly 11.

[0023] The above embodiment discloses a load-bearing element with a series structure of an airbag and a shock absorber. Among them, the airbag piston 19 is fixedly connected to the shock absorber assembly 11 through the lower bottom plate 21, which makes it convenient for maintenance and repair. At the same time, by setting the limit buffer block 16, the special-shaped nut 17 and the shock-absorbing spring 18, it is convenient to buffer the impact received by the output end of the shock absorber assembly 11, which makes it convenient to protect the shock absorber assembly 11. By setting the retaining ring 23, it is convenient to prevent flying objects from damaging the airbag body 12 during driving.

[0024] The above is only the specific implementation manner of the present application, but the protection scope of the present application is not limited thereto. Any person skilled in the art can easily think of changes or substitutions within the technical scope disclosed in the present application, and all should be covered by the protection scope of the present application. Therefore, the protection scope of the present application should be subject to the protection scope of the claims.

Claims

1. A bearing element of an airbag and shock absorber series structure, comprising a shock absorber assembly (11) and an airbag body (12), wherein an upper end cover (13) is fixedly provided at one end of the airbag body (12), an airbag piston (19) is fixedly provided at the other end of the airbag body (12), a lower bottom plate (21) is tightly provided at the bottom end of the airbag piston (19), the lower bottom plate (21) is fixedly provided on the shock absorber assembly (11), a venting joint (15) is provided at the upper end of the upper end cover (13), a threaded rod is provided at the output end of the shock absorber assembly (11), the threaded rod is connected to the upper end cover (13) by threads, and a buffer component for reducing impact on the output end of the shock absorber assembly (11) is provided at the bottom end of the upper end cover (13).

2. The airbag and shock absorber series structure load-bearing element according to claim 1, characterized in that: The buffer assembly comprises a special-shaped nut (17) which is threadably connected to the threaded rod; a limit buffer block (16) is rotatably arranged at one end of the special-shaped nut (17); a damping spring (18) is arranged between the bottom end of the limit buffer block (16) and the upper end of the shock absorber assembly (11).

3. The airbag and shock absorber series structure load-bearing element according to claim 1, characterized in that: A retaining ring (23) is fixedly provided at the bottom end of the airbag piston (19).

4. The airbag and shock absorber series structure load-bearing element according to claim 1, characterized in that: A lifting ear is fixedly provided at the upper end of the upper end cover (13), a composite bushing (14) is provided inside the lifting ear, a mounting frame (22) is fixedly provided at one end of the shock absorber assembly (11), and a plurality of sealing rings (20) are provided at the connection between the airbag piston (19) and the shock absorber assembly (11).

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