An air spring connection structure

Abstract

This utility model relates to the field of automotive technology and discloses an air spring connection structure, including an air spring piston. The lower end face of the air spring piston has a notch, and a protrusion is engaged with the inner wall of the notch. A shock absorber tray is fixedly connected to the bottom of the protrusion. This air spring connection structure forms a non-uniform width structure through surfaces a and b. During the assembly process of axially pressing the piston and tray, it prevents relative rotation and eliminates circumferential clearance. The side a of the notch and the side a' of the protrusion form a circumferential limit, and the side b of the notch and the side b' of the protrusion form a clearance-eliminating fit. All four sides a, b, a', and b' can be planar or curved surfaces. By arbitrarily combining planar or curved surfaces, a non-uniform width notch or protrusion structure can be formed, achieving the function of eliminating circumferential clearance.

Description

Technical Field

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

[0002] Automotive air springs use compressed gas as the elastic medium, performing the same function as springs in the automotive suspension system—bearing the sprung mass of the vehicle, mitigating body bumps caused by uneven road surfaces, and influencing the natural frequency of the suspension system. Some air springs are installed in the suspension system as a strut assembly, coaxially (or nearly coaxially) with the shock absorber. The rotational motion or tendency (torque) around the axis of this strut assembly generated by the movement or steering action of the suspension system causes a relative rotational motion or tendency between the air spring and the shock absorber. In practice, it is necessary to effectively control the relative rotation between the air spring and the shock absorber to avoid abnormal noises or wear on the strut assembly; at the same time, it is necessary to effectively control the circumferential clearance of the rotation limiting structure to prevent impacts and abnormal noises caused by its own clearance. Utility Model Content

[0003] The purpose of this utility model is to provide an air spring connection structure to solve the problem mentioned above in the background art. The purpose of this patent is to provide a connection structure between an air spring and a shock absorber to limit the relative movement between the air spring and the shock absorber. Rotate and eliminate circumferential limit clearance to avoid noise and wear problems in the slide block assembly.

[0004] To achieve the above objectives, this utility model provides the following technical solution: An air spring connection structure includes an air spring piston, characterized in that: a notch is provided on the lower end face of the air spring piston, a protrusion is engaged with the inner wall of the notch, and the two sides a and a' of the notch respectively cooperate with the two sides b and b' of the protrusion. The two sides a and a' of the notch and the two sides b and b' of the protrusion can be either planes or curved surfaces, and non-uniform width notches or protrusion structures can be formed by any combination of planes or curved surfaces. A shock absorber tray is fixedly connected to the bottom of the protrusion.

[0005] Preferably, the air spring piston forms a snap-fit ​​structure with notches and protrusions, and the number of notches and protrusions is one or more sets, which can be evenly distributed at equal angles or distributed at arbitrary angles in the circumferential direction.

[0006] Preferably, in the case where the two sides a and a' of the notch and the two sides b and b' of the protrusion are planar or curved surfaces, a complex surface composed of several planar and curved surfaces should still be regarded as conforming to the curved surface feature described in claim 1.

[0007] Preferably, the air spring piston forms a snap-fit ​​structure with the shock absorber tray via a protrusion, and the protrusion is located between the air spring piston and the shock absorber tray.

[0008] Preferably, the top of the protrusion extends into the inner wall of the notch for connection.

[0009] Preferably, the top of the shock absorber tray extends into the inner wall of the air spring piston for connection.

[0010] Compared with the prior art, the beneficial effects of this utility model are: this air spring connection structure, By forming a non-uniform width structure with surfaces a and b, it plays a role in preventing relative rotation and eliminating circumferential clearance during the assembly process of axially pressing the piston and the tray. The side a of the notch and the side a' of the protrusion form a circumferential limit, and the side b of the notch and the side b' of the protrusion form a clearance-eliminating fit. The four sides a, b, a', and b' can all be planes or curved surfaces. By arbitrarily combining planes or curved surfaces, a non-uniform width notch or protrusion structure can be formed to achieve the function of eliminating circumferential clearance. Attached Figure Description

[0011] Figure 1 is a schematic diagram of the air spring piston structure of this utility model; Figure 2 is a schematic diagram of the shock absorber tray structure of this utility model; Figure 3 is a schematic diagram of the air spring piston and shock absorber tray structure of this utility model; Figure 4 is a schematic diagram of the notch of the piston and the protrusion of the tray of this utility model.

[0012] In the diagram: 1. Air spring piston; 1.1. Notch; 2. Shock absorber tray; 2.1. Protrusion. Detailed Implementation

[0013] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0014] Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0015] Please refer to Figures 1, 2, 3, and 4. An air spring connection structure includes an air spring piston 1. The lower end face of the air spring piston 1 has a notch 1.1. The inner wall of the notch 1.1 is engaged with a protrusion 2.1. The two sides a and a' of the notch 1.1 are respectively engaged with the two sides b and b' of the protrusion 2.1. The two sides a and a' of the notch 1.1 and the two sides b and b' of the protrusion 2.1 can be planes or curved surfaces. By arbitrarily combining planes or curved surfaces, a notch or protrusion structure with non-uniform widths can be formed. A shock absorber tray 2 is fixedly connected to the bottom of the protrusion 2.1.

[0016] Through the above technical solution, the non-uniform width structure formed by surface a and surface b serves to prevent relative rotation and eliminate circumferential clearance during the assembly process of piston 1 and tray 2 being axially pressed together. Specifically, side a of notch 1.1 and side a' of protrusion 2.1 form a circumferential limit, and side b of notch 1.1 and side b' of protrusion 2.1 form a clearance-eliminating fit. All four sides a, b, a', and b' can be planar or curved surfaces. By arbitrarily combining planar or curved surfaces, a non-uniform width notch or protrusion structure is formed, thereby eliminating circumferential clearance.

[0017] Specifically, the air spring piston 1 forms a snap-fit ​​structure with the notch 1.1 and the protrusion 2.1, and can be evenly distributed at equal angles or distributed at arbitrary angles in the circumferential direction.

[0018] Through the above technical solution, the air spring piston 1 has a notch 1.1, and the protrusion 2.1 can be inserted into the notch 1.1 to form an effective fit for locking. This design can ensure that the two are firmly connected and avoid loosening or misalignment.

[0019] Specifically, the air spring piston 1 is connected to the shock absorber tray 2 by a protrusion 2.1, and the protrusion 2.1 is located between the air spring piston 1 and the shock absorber tray 2.

[0020] Through the above technical solution, the top of the shock absorber tray 2 is inserted into the air spring piston 1 and connected to its inner wall, while the locking of the notch 1.1 and the protrusion 2.1 has a fixing effect.

[0021] Specifically, the top of protrusion 2.1 extends into the inner wall of notch 1.1 for connection.

[0022] Through the above technical solution, the protrusion 2.1 is in the shape of a bump, and the top of the bump is inserted into the notch 1.1. The size of the top is the same as the size of the inner wall of the notch 1.1, so that they can be locked together.

[0023] Specifically, the top of the shock absorber tray 2 extends into the inner wall of the air spring piston 1 for connection.

[0024] Through the above technical solution, the top protruding part of the shock absorber tray 2 is inserted into the interior of the air spring piston 1. The outer wall of the top protruding part matches the inner wall of the air spring piston 1, which can play a preliminary locking and installation role. Then, the notch 1.1 and the protrusion 2.1 are engaged to achieve a fixing effect and prevent it from loosening.

[0025] Working principle: When using this air spring connection structure, firstly, one end of the shock absorber tray 2 is manually inserted into the air spring piston 1. The one end of the shock absorber tray 2 and the inner wall of the air spring piston 1 engage with each other, thus performing preliminary installation. At the same time, the protrusion 2.1 can be inserted into the notch 1.1. Then, through the engagement of the notch 1.1 and the protrusion 2.1, the connection and installation of the air spring piston 1 and the shock absorber tray 2 are fixed. This completes all the work. The contents not described in detail in this specification are existing technologies known to those skilled in the art.

[0026] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit defined by the appended claims and their equivalents.

Claims

1. An air spring connection structure, comprising an air spring piston (1), characterized in that: The lower end face of the air spring piston (1) is provided with a notch (1.1). The inner wall of the notch (1.1) is engaged with a protrusion (2.1). The two sides a and a' of the notch (1.1) are respectively engaged with the two sides b and b' of the protrusion 2.

1. The two sides a and a' of the notch (1.1) and the two sides b and b' of the protrusion (2.1) can be planes or curved surfaces. The notch or protrusion structure with non-equal width is formed by any combination of planes or curved surfaces. The bottom of the protrusion (2.1) is fixedly connected to a shock absorber tray (2).

2. The air spring connection structure according to claim 1, characterized in that: The air spring piston (1) can have one or more sets of snap-fit ​​structures formed by the notch (1.1) and the protrusion (2.1) in the circumferential direction, and can be evenly distributed at the same angle or distributed at any angle.

3. The air spring connection structure according to claim 1, characterized in that: Among the features of the two sides a and a' of the notch (1.1) and the two sides b and b' of the protrusion (2.1) being planes or curved surfaces, the complex surface composed of several planes and curved surfaces should still be regarded as conforming to the curved surface features described in claim 1 above.

4. The air spring connection structure according to claim 1, characterized in that: The air spring piston (1) forms a snap-fit ​​structure with the damper tray (2) through a protrusion (2.1), and the protrusion (2.1) is installed between the air spring piston (1) and the damper tray (2).

5. The air spring connection structure according to claim 1, characterized in that: The top of the protrusion (2.1) extends into the inner wall of the notch (1.1) for connection.

6. The air spring connection structure according to claim 1, characterized in that: The top of the damper tray (2) extends into the inner wall of the air spring piston (1) for connection.

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