Base structure of air spring

Abstract

The utility model discloses a base structure of an air spring, which comprises a base body and a backing ring, a plurality of elastic fasteners are circumferentially distributed on the inner wall of the lower portion of the base body in a surrounding manner, and the elastic fasteners protrude towards the center of the base body. The upper end of the backing ring can be clamped at the lower end of the elastic buckle, then the backing ring can be clamped in the base body, and the upper end face of the clamped backing ring is lower than or flush with the upper end face of the base body. Therefore, the connection of the base body and the backing ring does not occupy the axial space, the minimum thickness of the air spring base can reach a design value of 3mm, the overall height of the air volume of the air spring can be increased, and the volume is increased to the maximum extent; and the height size gap between the piston and the backing ring can be maximized, so that the air spring is prevented from bending up and down and interference between the backing ring and the piston is avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of air springs, in particular to a base structure of an air spring. Background Art

[0002] An air spring is a spring that is filled with compressed air in a retractable, sealed container and utilizes the elasticity of air. During installation, the bladder is installed between the piston and the base, which is also provided with a guide cylinder. The outer side of the air spring is pressed against the inner wall of the guide cylinder, and a backing ring is generally fixed to the base. Because air springs have ideal nonlinear elastic properties, a height adjustment device is commonly installed on the base to facilitate height adjustment. This allows the vehicle body height to remain unchanged with load changes, allowing the spring stiffness to be designed to be low, improving ride comfort. As a result, an increasing number of assembly plants are using air springs in passenger cars. However, the height clearance between the swing arm and the body of a passenger car is often very limited, and the size restriction of a few millimeters can pose significant challenges to air spring design.

[0003] Currently, the gasket is generally fixed at the upper end of the base, which will increase the axial height of the air spring, increase the installation space of the air spring, and increase the difficulty of installation design. In addition, the height gap between the gasket and the piston is small, which will cause interference between the gasket and the piston when the bladder skin flexes and moves up and down. Utility Model Content

[0004] In order to solve the technical problems existing in the background technology, the utility model proposes a base structure of an air spring.

[0005] The utility model proposes a base structure of an air spring, including a base body and a gasket. The lower inner wall of the base body is provided with a plurality of elastic clips distributed around its circumference. The elastic clips protrude toward the center of the base body. When the gasket is pressed down, the upper end of the gasket can be clamped at the lower end of the elastic clip, and then the gasket can be clamped inside the base body, and the upper end surface of the gasket after clamping is lower than or flush with the upper end surface of the base body.

[0006] Preferably, the elastic buckle is a plastic buckle, which is made by injection molding and contains 25% to 40% glass fiber.

[0007] Preferably, the elastic buckle and the base body are configured as an integrated structure.

[0008] Preferably, a side wall of the base body located above the elastic buckle is provided with an inclined surface, and the inclined surface is inclined in a direction away from the elastic buckle.

[0009] Preferably, four elastic buckles are provided.

[0010] In summary, the present invention has the following beneficial effects: by providing a plurality of elastic clips along the circumference of the lower inner wall of the base body, when the gasket is pressed downward, the upper end of the gasket can be locked with the lower end of the elastic clips, thereby locking the gasket inside the base body, and the upper end surface of the gasket after being engaged is flush with the upper end surface of the base body. In this way, the connection between the base body and the gasket does not occupy axial space, and the thickness of the air spring base can be reduced to the minimum design value of 3mm, thereby increasing the overall height of the air spring gas volume and achieving maximum volume increase. It can also maximize the height gap between the piston and the gasket, avoiding the air spring's flexing and upward movement, and interference between the gasket and the piston.

[0011] Additional aspects and advantages of the present invention will be given in part in the following description and will become apparent from the following description or learned through practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 This is a schematic structural diagram of an air spring according to an embodiment of the present utility model;

[0013] Figure 2 A bottom view of the base body of an embodiment of the present utility model;

[0014] Figure 3 The three-dimensional base body of the embodiment of the utility model Figure 1 ;

[0015] Figure 4 The three-dimensional base body of the embodiment of the utility model Figure 2 ;

[0016] Figure 5 This is a cross-sectional view of the connection between the base body and the gasket ring according to an embodiment of the present utility model.

[0017] In the picture:

[0018] 1. Base body; 2. Gasket; 3. Elastic buckle; 4. Inclined surface. DETAILED DESCRIPTION

[0019] The following describes in detail embodiments of the present invention. Examples of the embodiments are shown in the accompanying drawings, wherein the same or similar symbols 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 only to explain the present invention, and should not be construed as limiting the present invention.

[0020] like Figure 1-5As shown, the base structure of an air spring proposed in this embodiment includes a base body 1 and a gasket 2. A plurality of elastic clips 3 are distributed around the circumference of the lower inner wall of the base body 1. The elastic clips 3 protrude toward the center of the base body 1. When the gasket 2 is pressed down, the upper end of the gasket 2 can be clamped at the lower end of the elastic clip 3, and then the gasket 2 can be clamped inside the base body 1, and the upper end surface of the gasket 2 after clamping is lower than or flush with the upper end surface of the base body 1.

[0021] Specifically, there are four elastic buckles 3, or other numbers depending on the actual situation.

[0022] In this way, the connection between the base body 1 and the gasket 2 does not occupy axial space, and the thickness of the air spring base can be reduced to the design value of 3mm, thereby increasing the overall height of the air spring gas volume and achieving the maximum volume increase; it can also maximize the height gap between the piston and the gasket, avoiding the air spring from bending and moving up and down, and interference between the gasket and the piston.

[0023] Furthermore, the elastic buckle 3 is configured as a plastic buckle, which is made by injection molding and has 25% to 40% glass fiber added thereto, thereby increasing the strength of the elastic buckle and meeting usage requirements.

[0024] Furthermore, in order to simplify the processing technology, the elastic buckle 3 and the base body 1 are configured as an integrated structure.

[0025] In this embodiment, the side wall of the base body 1 above the elastic clip 3 is provided with an inclined surface 4, which is inclined in a direction away from the elastic clip 3. Increasing the draft angle allows for smooth sliding onto the plane of the backing ring 2. When the connection between the backing ring 2 and the base body 1 needs to be released, force is first applied outwards towards the inclined surface 4 to leave space for the backing ring 2 to move upward, and then the backing ring 2 can be removed. The inclined surface design facilitates disassembly and assembly of the base body 1 and the backing ring 2.

[0026] It should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like to indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0027] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of the technical features being referred to. Thus, a feature specified as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of this utility model, "plurality" means at least two, such as two, three, etc., unless otherwise specifically defined.

[0028] In this utility model, unless otherwise specified or limited, the terms "installed," "connected," "connect," "fixed," etc. should be understood in a broad sense. For example, they can refer to fixed connection, detachable connection, or integration; mechanical connection, electrical connection, or communication; direct connection or indirect connection through an intermediate medium; internal communication between two elements or interaction between two elements, unless otherwise specified. For those skilled in the art, the specific meanings of the above terms in this utility model can be understood according to specific circumstances.

[0029] In the present invention, unless otherwise expressly specified or limited, when a first feature is "above" or "below" a second feature, it may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediary. Furthermore, when a first feature is "above," "above," or "above" a second feature, it may mean that the first feature is directly above or diagonally above the second feature, or simply means that the first feature is at a higher level than the second feature. When a first feature is "below," "below," or "below" a second feature, it may mean that the first feature is directly below or diagonally below the second feature, or simply means that the first feature is at a lower level than the second feature.

[0030] The above is only a preferred specific implementation method of the present invention, but the protection scope of the present invention is not limited to this. Any technician familiar with the technical field within the technical scope disclosed by the present invention can make equivalent replacements or changes based on the technical solution and utility model concept of the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A base structure of an air spring, comprising a base body and a gasket, characterized in that: The lower inner wall of the base body is provided with a plurality of elastic clips distributed along its circumference, and the elastic clips protrude toward the center of the base body. When the gasket is pressed down, the upper end of the gasket can be clamped on the lower end of the elastic clip, and then the gasket can be clamped inside the base body, and the upper end surface of the gasket after clamping is lower than or flush with the upper end surface of the base body.

2. The base structure of the air spring according to claim 1, characterized in that: The elastic buckle is configured as a plastic buckle.

3. The base structure of the air spring according to claim 2, characterized in that: The elastic buckle and the base body are configured as an integrated structure.

4. The base structure of the air spring according to claim 1, characterized in that: A slope is provided on the side wall of the base body above the elastic buckle, and the slope is inclined in a direction away from the elastic buckle.

5. The base structure of the air spring according to claim 1, characterized in that: There are four elastic buckles.

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