An air suspension with a shock absorber placed under the spring arm

Abstract

The present invention discloses an air suspension with a shock absorber placed under a spring arm, comprising: a hanging ear bracket; a spring arm, the end of the spring arm is inserted into the inner side of the hanging ear bracket, and the end of the spring arm is provided with a first mounting fulcrum, and the spring arm is connected to the hanging ear bracket through the first mounting fulcrum; a mounting device; an axle tube, the axle tube is arranged under the spring arm, and the axle tube is connected to the spring arm through the mounting device; and a shock absorber, the shock absorber is installed between the hanging ear bracket and the mounting device. The present invention utilizes the arrangement mode of matching the spring arm and the shock absorber, and embodies the triangular support structure between the hanging ear bracket, the spring arm and the shock absorber. The triangular support structure can effectively disperse the force acting on the shock absorber and the spring arm, reduce local stress concentration, and thus reduce the occurrence rate of wear and failure. This design improves the reliability of the suspension system, prolongs the service life, reduces the frequency of maintenance and replacement, and reduces the user's use cost.

Description

Technical Field

[0001] The invention relates to the field of air suspensions, and in particular to an air suspension with a shock absorber arranged below a spring arm. Background Art

[0002] The existing air suspension system usually adopts the traditional layout, in which the arrangement of the ear bracket, spring arm and shock absorber often fails to fully consider the structural optimization and force transmission efficiency. For example, the shock absorber, spring arm and ear bracket adopt the traditional linear structure arrangement. This arrangement has the following problems in practical application:

[0003] Unreasonable center of gravity layout: In traditional structures, the installation position of the shock absorber is often parallel to or higher than the spring arm, which fails to effectively lower the center of gravity, resulting in insufficient stability of the vehicle during driving, affecting handling performance and ride comfort.

[0004] Insufficient integration between the shock absorber and the spring arm: In the existing design, the arrangement of the upper and lower shock absorbers fails to present a reasonable inclined support, resulting in insufficient support of the shock absorber for the spring arm, thereby limiting the lightweight design of the spring arm and affecting the performance of the overall suspension system.

[0005] Weight and reliability issues: Since the spring arm fails to fully utilize the support function of the shock absorber, additional materials and structures are often required to ensure its strength and stability, resulting in an increase in overall weight and failure to achieve lightweight design, which affects the vehicle's fuel efficiency and handling performance. In addition, traditional designs are prone to failure during use, reducing the reliability and service life of the system. Summary of the invention

[0006] The object of the present invention is to provide an air suspension with a shock absorber placed below a spring arm, so as to solve the problems raised in the above background technology.

[0007] To achieve the above object, the present invention provides the following technical solution: an air suspension with a shock absorber placed under a spring arm, comprising:

[0008] A lifting eye bracket, the lifting eye bracket is used to connect the suspension system and the vehicle body;

[0009] A spring arm, one end of which is hinged to the ear bracket through a first mounting fulcrum;

[0010] A mounting device, the mounting device being fixed to the spring arm and used to provide a supporting connection position;

[0011] An axle tube, the axle tube is arranged below the spring arm and connected to the spring arm through a mounting device;

[0012] at least one shock absorber, obliquely disposed between the hanging ear bracket and the mounting device, and forming a triangular support structure with the spring arm;

[0013] The triangular support structure is used to disperse the forces on the spring arm and the shock absorber, thereby reducing local stress concentration.

[0014] Preferably, the mounting device comprises:

[0015] A cover plate, the cover plate being arranged on the top of the spring arm;

[0016] A mounting frame, the mounting frame being disposed at the bottom of the spring arm;

[0017] A U-shaped bolt, wherein the U-shaped bolt is wrapped around the outside of the spring arm and the shaft tube, and the end of the U-shaped bolt passes through the mounting frame and the cover plate and is locked and fixed by a nut;

[0018] A connecting frame is installed on one side of the cover plate and the mounting frame respectively.

[0019] Preferably, a second mounting fulcrum is provided at one end of the shock absorber, and the shock absorber is connected to the ear bracket through the second mounting fulcrum; a third mounting fulcrum is provided at the other end of the shock absorber, and the third mounting fulcrum is connected to the connecting frame.

[0020] Preferably, the ear bracket is arranged in a cross shape.

[0021] Preferably, the upper end of the shock absorber is installed at a position lower than the hinge center of the spring arm to lower the overall center of gravity of the suspension system.

[0022] Preferably, the position of the shaft tube is lower than the lifting ear bracket, so that the inclination angle of the shock absorber is 15°-60°.

[0023] Preferably, when two shock absorbers are used, the upright and inverted triangle structure is used to evenly distribute the impact force from the road surface to achieve anti-roll support for the suspension system.

[0024] Technical effects and advantages of the present invention:

[0025] (1) The present invention utilizes a configuration method that matches the spring arm and the shock absorber. In Example 1, the installation position of the upper end of the shock absorber is designed to be lower than the spring arm. The design that the upper end of the shock absorber is lower than the spring arm can effectively lower the center of gravity of the overall suspension system and optimize the use of space. This design not only helps the low center of gravity layout of the vehicle, but also provides more flexibility for the configuration of other components. In combination with the configuration method in Example 2 where the upper and lower shock absorbers are supported obliquely at the center of the spring arm, the shock absorber can effectively provide support for the spring arm, significantly improving the working efficiency of the shock absorber, so that the shock absorber can better absorb and attenuate road impact during operation, effectively improving the shock absorption effect, and both implementation methods embody a triangular support structure between the ear bracket, the spring arm and the shock absorber. The triangular support structure can effectively disperse the force acting on the shock absorber and the spring arm, reduce local stress concentration, and thus reduce the occurrence rate of wear and failure. This design improves the reliability of the suspension system, extends the service life, reduces the frequency of maintenance and replacement, and reduces the user's cost of use;

[0026] (2) The present invention utilizes a configuration in which the spring arm and the shock absorber are matched. Thanks to the tilted support function of the shock absorber, the design of the spring arm can be more lightweight, reducing the use of materials. This lightweight design not only reduces the overall weight of the suspension system, but also improves the fuel efficiency and handling performance of the vehicle, further optimizing the performance indicators of the entire vehicle;

[0027] (3) The present invention utilizes a setting method in which the mounting device and the shock absorber are coordinated. The mounting device is used to realize the vertical binding installation of the relative position between the spring arm and the shaft tube, which is convenient for providing a fulcrum for the installation of the shock absorber, so that the shock absorber can be supported in an inclined state, the burden of the shock absorber is evenly distributed, and the local stress concentration phenomenon is reduced. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 This is one of the front structural schematic diagrams of the present invention.

[0029] Figure 2 This is the second schematic diagram of the front structure of the present invention.

[0030] Figure 3 It is a schematic diagram of the overall structure of the present invention.

[0031] Figure 4 It is a schematic diagram of the top view structure of the present invention.

[0032] In the figure: 1, ear bracket; 2, spring arm; 21, first mounting fulcrum; 3, mounting device; 31, cover plate; 32, mounting frame; 33, U-bolt; 34, connecting frame; 4, shaft tube; 5, shock absorber; 51, second mounting fulcrum; 52, third mounting fulcrum. DETAILED DESCRIPTION

[0033] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0034] The present invention provides Figure 1-4 The air suspension shown in the figure has a shock absorber placed under a spring arm, comprising: a hanging ear bracket 1, which is arranged in a "F" shape; a spring arm 2, the end of which is inserted into the inner side of the hanging ear bracket 1, and the end of which is provided with a first mounting fulcrum 21, and the spring arm 2 is connected to the hanging ear bracket 1 through the first mounting fulcrum 21; a mounting device 3, which is mounted on the spring arm 2; an axle tube 4, which is arranged under the spring arm 2, and the axle tube 4 is connected to the spring arm 2 through the mounting device 3; a shock absorber 5, which is mounted between the hanging ear bracket 1 and the mounting device 3, and the shock absorber 5 is supported obliquely between the hanging ear bracket 1 and the spring arm 2 to form a triangular support, so that the shock absorber 5 can effectively The spring arm 2 provides support, which significantly improves the working efficiency of the shock absorber 5, so that the shock absorber 5 can better absorb and attenuate the road impact during the working process, and effectively improves the shock absorption effect. In addition, both embodiments embody the triangular support structure between the ear bracket 1, the spring arm 2 and the shock absorber 5. The triangular support structure can effectively disperse the force acting on the shock absorber 5 and the spring arm 2, reduce local stress concentration, and thus reduce the occurrence rate of wear and failure. This design improves the reliability of the suspension system, extends the service life, reduces the frequency of maintenance and replacement, and reduces the user's use cost. Thanks to the inclined support of the shock absorber 5, the design of the spring arm 2 can be more lightweight and reduce the use of materials. This lightweight design not only reduces the overall weight of the suspension system, but also improves the fuel efficiency and handling performance of the vehicle, and further optimizes the performance indicators of the whole vehicle. The mounting device 3 is used to realize the vertical binding installation of the relative position between the spring arm 2 and the shaft tube 4, which is convenient for providing a fulcrum for the installation of the shock absorber 5, so that the shock absorber 5 can be supported in an inclined state, and the burden of the shock absorber 5 is evenly distributed, reducing the local stress concentration phenomenon.

[0035] Furthermore, the mounting device 3 includes: a cover plate 31, which is arranged on the top of the spring arm 2; a mounting frame 32, which is arranged on the bottom of the spring arm 2; a U-shaped bolt 33, which is wrapped around the outside of the spring arm 2 and the shaft tube 4, and the end of the U-shaped bolt 33 passes through the mounting frame 32 and the cover plate 31 and is fixed by a nut; a connecting frame 34, which is respectively installed on one side of the cover plate 31 and the mounting frame 32, and the mounting frame 32 is arranged in a Z shape, and an installation space is provided for the installation of the connecting frame 34 through the cover plate 31 and the mounting frame 32. The relative position between the spring arm 2 and the shaft tube 4 is conveniently installed and fixed by the insertion of the U-shaped bolt 33, the cover plate 31 and the mounting frame 32, and since the shaft tube 4 is arranged below the spring arm 2, the position of the shaft tube 4 is lower than the position of the ear bracket 1, which facilitates the installation of the shock absorber 5 in an inclined state between the ear bracket 1 and the mounting device 3.

[0036] Among them, a second mounting fulcrum 51 is set at one end of the shock absorber 5, and the shock absorber 5 is connected to the ear bracket 1 through the second mounting fulcrum 51. A third mounting fulcrum 52 is set at the other end of the shock absorber 5, and the third mounting fulcrum 52 is connected to the connecting frame 34.

[0037] Example 1

[0038] The shock absorber 5 is located below the spring arm 2. By designing the installation position of the upper end of the shock absorber 5 to be lower than the spring arm 2, the design of the upper end of the shock absorber 5 being lower than the spring arm 2 can effectively lower the center of gravity of the entire suspension system and optimize the use of space. This design not only contributes to the low center of gravity layout of the vehicle, but also provides more flexibility for the configuration of other components. The position of the axle tube 4 is lower than the eye bracket 1, so that the inclination angle of the shock absorber 5 is 15°-60°.

[0039] Example 2

[0040] Among them, two shock absorbers 5 are respectively arranged above and below the spring arm 2, and the upper and lower shock absorbers 5 are supported obliquely at the center of the spring arm 2. So that two upper and lower positive and negative triangles are formed between the hanging ear bracket 1, the mounting device 3, the spring arm 2, and the shock absorber 5. The upper and lower shock absorbers 5 are supported obliquely at the center of the spring arm 2 to form a positive and negative triangle structure, so that the shock absorber 5 can evenly share the vibration and impact force from the road surface, optimize the working angle of the shock absorber 5, significantly improve the shock absorption efficiency, and improve the ride comfort and handling stability of the vehicle. The positive and negative triangle structure optimizes the mechanical distribution between the shock absorber 5 and the spring arm 2, so that the suspension system can more efficiently absorb and buffer the vibration and impact from the road surface, significantly improve the shock absorption effect, further improve the ride comfort and driving stability of the vehicle, and the positive and negative triangle structure significantly enhances the anti-roll capability of the suspension system, can provide better support when the vehicle turns or changes lanes, and effectively improves the driving safety and handling performance of the vehicle.

[0041] Finally, it should be noted that the above is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, it is still possible for those skilled in the art to modify the technical solutions described in the aforementioned embodiments or to make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. An air suspension with a shock absorber placed below a spring arm, characterized in that: include: A lifting lug bracket (1), wherein the lifting lug bracket (1) is used to connect the suspension system and the vehicle body; A spring arm (2), one end of the spring arm (2) being hinged to the hanging ear bracket (1) via a first mounting fulcrum (21); A mounting device (3), the mounting device (3) being fixed on the spring arm (2) and used for providing a supporting connection position; An axle tube (4), the axle tube (4) being arranged below the spring arm (2) and connected to the spring arm (2) via a mounting device (3); at least one shock absorber (5), which is obliquely arranged between the hanging ear bracket (1) and the mounting device (3) and forms a triangular support structure with the spring arm (2); The triangular support structure is used to disperse the forces on the spring arm (2) and the shock absorber (5), thereby reducing local stress concentration.

2. An air suspension with a shock absorber placed under a spring arm according to claim 1, characterized in that: The installation device (3) comprises: A cover plate (31), wherein the cover plate (31) is arranged on the top of the spring arm (2); A mounting frame (32), wherein the mounting frame (32) is arranged at the bottom of the spring arm (2); A U-shaped bolt (33), wherein the U-shaped bolt (33) is wrapped around the outside of the spring arm (2) and the shaft tube (4), and the end of the U-shaped bolt (33) passes through the mounting frame (32) and the cover plate (31) and is locked and fixed by a nut; A connecting frame (34) is respectively mounted on one side of the cover plate (31) and the mounting frame (32).

3. An air suspension with a shock absorber placed under a spring arm according to claim 2, characterized in that: A second mounting fulcrum (51) is provided at one end of the shock absorber (5), and the shock absorber (5) is connected to the hanging ear bracket (1) via the second mounting fulcrum (51); a third mounting fulcrum (52) is provided at the other end of the shock absorber (5), and the third mounting fulcrum (52) is connected to the connecting frame (34).

4. The air suspension according to claim 1, wherein the shock absorber is placed under the spring arm, The hanging ear bracket (1) is arranged in a "X" shape.

5. The air suspension with a shock absorber placed under a spring arm according to claim 1, characterized in that: The upper end installation position of the shock absorber (5) is lower than the hinge center of the spring arm (2) to lower the overall center of gravity of the suspension system.

6. An air suspension with a shock absorber placed under a spring arm according to claim 5, characterized in that: The position of the shaft tube (4) is lower than the lifting eye bracket (1), so that the inclination angle of the shock absorber (5) is 15°-60°.

7. An air suspension with a shock absorber placed under a spring arm according to claim 1, characterized in that: When two shock absorbers (5) are used, the upright and inverted triangle structure is used to evenly distribute the impact force from the road surface to achieve anti-roll support for the suspension system.

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