Quick-release volume-adjustable air spring

Abstract

The utility model discloses a quick detachable volume adjustable air spring, including heave piston, rotary lid, heave piston is connected with lower swing seat through the skin bag, heave piston is detachable with rotary lid through the snap spring and causes rotary lid with heave piston, skin bag, lower swing seat and forms the air chamber that can communicate with the outside world with the surrounding. In the utility model, rotary lid and heave piston are set up through the snap spring connection, and the rotary lid of different size can be connected with heave piston, thereby the air chamber that heave piston and rotary lid surround and form is configured to different volume. So as to realize different rigidity demand, save development cycle and development cost, and easily realize air spring platform development.

Description

Technical Field

[0001] This utility model relates to the field of vehicle parts technology, and more specifically to a quick-release, volume-adjustable air spring. Background Technology

[0002] As people's demands for vehicle comfort increase, more passenger cars are being equipped with air springs. In order to save development time and costs, air spring developers are gradually moving towards platformization in the development of air spring structures. There is an urgent need for a volume adjustable air spring structure to meet the requirement of adapting to different vehicle models with the same upper and lower interfaces, while achieving a variety of air spring stiffnesses.

[0003] Currently, most air springs are integrated units, which cannot meet the needs of platform-based vehicle development, such as... Figure 1 As shown, the lower swing seat and the mounting seat are connected by a snap-fit. Currently, there are two ways to develop various adjustable air springs. One is to directly make air chambers of different volumes as a single piece. The other is to make the external structure of the air chamber into separate parts and then combine the different shaped separate parts to form air chambers of different volumes through interference fit. However, in the first method, the mounting seat is injection molded as a single piece. In order to adapt to air springs of different volumes, it is necessary to open molds for multiple mounting seats of different volumes, which will lead to excessive costs and long cycles. In the second method, interference fit, disassembly and assembly are inconvenient and can easily cause damage to structural components. Utility Model Content

[0004] The technical problem to be solved by this invention is how to provide an air spring that can be quickly assembled and disassembled and whose volume can be adjusted.

[0005] This utility model solves the above-mentioned technical problems through the following technical means: a quick-release volume adjustable air spring, including an undulating piston and a rotating cover. The undulating piston is connected to the lower swing seat through a bladder. The undulating piston is detachably connected to the rotating cover through a snap ring, so that the rotating cover, the undulating piston, the bladder, and the lower swing seat enclose an air chamber that can communicate with the outside.

[0006] As a preferred technical solution, the connection surface between the undulating piston and the rotating cover is also provided with at least one sealing ring, and the rotating cover is provided with a sealing ring groove that matches the sealing ring.

[0007] As a preferred technical solution, the inner wall of the undulating piston is provided with a positioning step that matches the rotating cover.

[0008] As a preferred technical solution, the top of the rotating cover is provided with a flange in the circumferential direction, and the positioning step includes a first positioning step that is adapted to the flange.

[0009] As a preferred technical solution, the rotating cover includes a transverse connecting section, a first vertical connecting section, and a second vertical connecting section that are coaxial. The transverse connecting section is fixedly connected to the second vertical connecting section through the first vertical connecting section. The positioning step also includes a second positioning step that is adapted to the second vertical connecting section.

[0010] As a preferred technical solution, the inner wall of the top of the rotating cover is provided with a retaining spring groove that is compatible with the retaining spring.

[0011] As a preferred technical solution, it also includes a mounting base, which is detachably connected to the lower swing seat via a retaining spring, and the inner wall of the bottom of the lower swing seat is provided with a retaining spring groove that matches the retaining spring.

[0012] As a preferred technical solution, the connection surface between the mounting base and the lower swing base is provided with at least one sealing ring.

[0013] As a preferred technical solution, the mounting base is provided with a sealing ring groove in the circumferential direction to match the sealing ring.

[0014] As a preferred technical solution, the bottom of the mounting base is also provided with a protruding edge that can partially extend into the retaining ring groove.

[0015] The beneficial effects of this utility model are as follows:

[0016] (1) In this utility model, the rotating cover and the undulating piston are connected by a snap ring, which facilitates the connection of rotating covers of different sizes with the undulating piston, thereby configuring the air chamber formed by the undulating piston and the rotating cover into different volumes. This achieves different stiffness requirements, saves development cycle and development cost, and makes it easy to realize the platform development of air springs.

[0017] (2) In this utility model, the mounting base and the lower swing base are changed from the traditional snap-fit ​​connection to the sealing method of the snap spring and the sealing ring, which facilitates disassembly and assembly. Under the premise of ensuring that the interface size is consistent with the whole vehicle, the structure of the mounting base is changed, that is, the volume of the air spring is adjusted to achieve different stiffnesses of the air spring, so as to meet the needs of early calibration and subsequent platform development. Attached Figure Description

[0018] Figure 1 A schematic diagram of an air spring structure is provided for the background art of this utility model;

[0019] Figure 2 A schematic diagram of the air spring structure provided for an embodiment of this utility model;

[0020] Figure 3 This is a schematic diagram of the cross-sectional structure of the connection between the rotating cover and the undulating piston provided in an embodiment of the present utility model;

[0021] Figure 4 This is a schematic diagram of the cross-sectional structure of the rotating cover provided in an embodiment of the present utility model;

[0022] Figure 5 A schematic diagram of the undulating piston cross-sectional structure provided in an embodiment of this utility model;

[0023] Figure 6 A schematic diagram of the cross-sectional structure of the connection between the lower swing seat and the mounting seat provided in an embodiment of this utility model;

[0024] Figure 7 A schematic diagram of the cross-sectional structure of the lower swing seat provided in an embodiment of this utility model;

[0025] Figure 8 This is a schematic diagram of the cross-sectional structure of the mounting base provided in an embodiment of the present utility model;

[0026] Reference numerals: 1. Irregular piston; 2. Rotating cover; 21. Sealing ring groove; 3. Lower pivot seat; 4. Mounting seat; 5. Leather bag; 6. Sealing ring; 7. Air nozzle; 8. Snap ring; 9. Snap ring groove. Detailed Implementation

[0027] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below in conjunction with the embodiments of this utility model. 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.

[0028] See Figure 2 A quick-release, volume-adjustable air spring includes an undulating piston 1, a rotating cover 2, a lower swing seat 3, a mounting base 4, a bladder 5, a sealing ring 6, an air nozzle 7, and a retaining spring 8. The undulating piston 1 is connected to the lower swing seat 3 via the bladder 5. The undulating piston 1 is detachably connected to the rotating cover 2 via the retaining spring 8, causing the rotating cover 2, the undulating piston 1, the bladder 5, and the lower swing seat 3 to enclose an air chamber that can communicate with the outside. An air nozzle 7 is connected to the rotating cover 2 and communicates with the air chamber. A retaining spring groove 9 adapted to the retaining spring 8 is opened on the inner wall of the top of the rotating cover 2. The rotating cover 2 and the undulating piston 1 are configured to be detachably connected via the retaining spring 8, which facilitates the connection of rotating covers 2 of different sizes with the undulating piston 1. This allows the air chamber formed by the undulating piston 1 and the rotating cover 2 to be configured with different volumes, thereby achieving different stiffness requirements, saving development cycle and development cost, and facilitating the platform-based development of air springs.

[0029] The inner wall of the undulating piston 1 is provided with a positioning step that matches the rotating cover 2. The top of the rotating cover 2 is provided with a flange in the circumferential direction. The positioning step includes a first positioning step that matches the flange. The rotating cover 2 includes a transverse connecting section, a first vertical connecting section, and a second vertical connecting section that are coaxial. In this embodiment, the transverse connecting section and the first vertical connecting section are vertically fixed, and the first vertical connecting section and the second vertical connecting section are fixedly connected. Of course, the transverse connecting section, the first vertical connecting section, and the second vertical connecting section can also be an integrally formed structure, with the transverse connecting section fixedly connected to the first vertical connecting section and the second vertical connecting section. The positioning step also includes a second positioning step adapted to the second vertical connecting section. In this embodiment, the horizontal connecting section, the first vertical connecting section, and the second vertical connecting section are integrally formed structures. The horizontal connecting section, the first vertical connecting section, and the second vertical connecting section are all cylindrical structures. The diameter of the horizontal connecting section is larger than the diameter of the first vertical connecting section, and the diameter of the first vertical connecting section is larger than the diameter of the second vertical connecting section. The volume of the rotating cover 2 can be changed by changing the height of the second vertical connecting section, thereby changing the size of the air chamber. Of course, the volume of the air chamber can also be increased by opening a groove in the rotating cover 2.

[0030] See Figure 3 , Figure 4 The connecting surface between the undulating piston 1 and the rotating cover 2 is also provided with at least one sealing ring 6. The rotating cover 2 is provided with a sealing ring groove 21 that is adapted to the sealing ring 6. In this embodiment, two sealing ring grooves 21 are provided on the first vertical connecting section of the rotating cover 2. Of course, there can also be three, four, etc., and the number is not limited to this. The number of sealing rings 6 and sealing ring grooves 21 correspond one-to-one.

[0031] See Figure 6 , Figure 7 , Figure 8 The mounting base 4 and the lower swing base 3 are detachably connected by a retaining spring 8, which facilitates the disassembly of the mounting base 4. The inner wall of the bottom of the lower swing base 3 is provided with a retaining spring groove 9 that matches the retaining spring 8. The connecting surface between the mounting base 4 and the lower swing base 3 is also provided with at least one sealing ring 6. The mounting base 4 is provided with a sealing ring groove 21 that matches the sealing ring 6 in the circumferential direction. In this embodiment, taking two sealing rings 6 as an example, two sealing ring grooves 21 are provided accordingly. The bottom of the mounting base 4 is also provided with a protruding edge that can partially extend into the retaining spring groove 9.

[0032] The above embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit it. Although this utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this utility model.

Claims

1. A quick-release, volume-adjustable air spring, comprising an undulating piston (1) and a rotating cover (2), wherein the undulating piston (1) is connected to a lower pivot seat (3) via a bladder (5), characterized in that, The undulating piston (1) is detachably connected to the rotating cover (2) via a snap ring (8), causing the rotating cover (2) to enclose the undulating piston (1), the bladder (5), and the lower seat (3) to form an air chamber that can communicate with the outside world.

2. The quick-release adjustable volume air spring according to claim 1, characterized in that, The connecting surface between the undulating piston (1) and the rotating cover (2) is also provided with at least one sealing ring (6), and the rotating cover (2) is provided with a sealing ring groove (21) that is compatible with the sealing ring (6).

3. The quick-release adjustable volume air spring according to claim 1, characterized in that, The inner wall of the undulating piston (1) is provided with a positioning step that is compatible with the rotating cover (2).

4. A quick-release, volume-adjustable air spring according to claim 1, characterized in that, The rotating cover (2) has a flange on its top circumferential direction, and the positioning step includes a first positioning step that is adapted to the flange.

5. A quick-release, volume-adjustable air spring according to claim 4, characterized in that, The rotating cover (2) includes a transverse connecting section, a first vertical connecting section, and a second vertical connecting section that are coaxial. The transverse connecting section is fixedly connected to the second vertical connecting section through the first vertical connecting section. The positioning step also includes a second positioning step that is adapted to the second vertical connecting section.

6. A quick-release, volume-adjustable air spring according to claim 1, characterized in that, The rotating cover (2) has a retaining ring groove (9) on the top inner wall that is compatible with the retaining ring (8).

7. A quick-release, volume-adjustable air spring according to claim 1, characterized in that, It also includes a mounting base (4), which is detachably connected to the lower swing seat (3) via a snap ring (8). The bottom inner wall of the lower swing seat (3) is provided with a snap ring groove (9) that matches the snap ring (8).

8. A quick-release, volume-adjustable air spring according to claim 7, characterized in that, The connection surface between the mounting base (4) and the lower swing base (3) is also provided with at least one sealing ring (6).

9. A quick-release, volume-adjustable air spring according to claim 8, characterized in that, The mounting base (4) is provided with a sealing ring groove (21) around its circumference that is adapted to the sealing ring (6).

10. A quick-release, volume-adjustable air spring according to claim 1, characterized in that, The bottom of the mounting base (4) is also provided with a protrusion that can partially extend into the circlip groove (9).

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