Air suspension with height adjusting structure

Abstract

The invention discloses an air suspension with a height adjusting structure, and relates to the technical field of air suspensions, the air suspension has the advantages of realizing fine adjustment of the height of the air suspension and reducing dependence on compressed air, and the key points of the technical scheme are as follows: the air suspension comprises a frame, an air suspension and a suspension swing arm, and the top end of the air suspension is fixedly connected with the frame; the bottom end of the air suspension is connected with the suspension swing arm through a pressure adjusting assembly. The pressure adjusting assembly comprises an installation plate fixedly connected with the bottom end of the air suspension, an installation support is fixed to the lower surface of the installation plate, and at least three pressure adjusting blades are hinged to the installation support, surround the periphery of the air suspension and are arranged in an array mode with the center line of the air suspension as the circle center. The outer wall of the air suspension is connected with at least three lugs, and the lugs are movably connected with the ends of the pressure adjusting blades.

Description

Technical Field

[0001] This invention relates to the field of air suspension technology, specifically to an air suspension with a height adjustment structure. Background Technology

[0002] Due to its excellent comfort and adjustability, air suspension has become an important development direction for suspension systems in mid-to-high-end vehicles. Traditional electronically controlled air suspension systems mainly use a closed-loop system composed of a height sensor, electronic control unit, solenoid valve and air compressor to adjust the air pressure inside the airbag, thereby controlling the vehicle height and suspension stiffness.

[0003] However, this pressure regulation method based on inflation and deflation has a physical lag between the sensor detecting the action requirement and the actual change in airbag pressure because the compression of gas, its flow in the pipeline, and the opening and closing of valves all require a certain amount of time. This results in a delay in system response and makes it difficult to cope with high-frequency, small-amplitude vibrations on the road surface. Summary of the Invention

[0004] In view of the above-mentioned technical deficiencies, the purpose of this invention is to provide an air suspension with a height adjustment structure, which has the advantages of enabling fine adjustment of air suspension height, reducing dependence on compressed gas, and enabling rapid dynamic response.

[0005] To solve the above-mentioned technical problems, the present invention adopts the following technical solution: This invention provides an air suspension with a height adjustment structure, including a vehicle frame, an air suspension and a suspension arm, wherein the top end of the air suspension is fixedly connected to the vehicle frame, and the bottom end of the air suspension is connected to the suspension arm through a pressure adjustment assembly; The pressure regulating assembly includes a mounting plate fixedly connected to the bottom end of the air suspension. A mounting bracket is fixedly attached to the lower surface of the mounting plate. At least three pressure regulating blades are hinged to the mounting bracket. The at least three pressure regulating blades are arranged in an array around the outer periphery of the air suspension and with the center line of the air suspension as the center. The outer wall of the air suspension is connected to at least three of the aforementioned lugs, which are movably connected to the ends of the pressure regulating blades; A transmission assembly is also provided between the suspension arm and the frame to drive at least three of the pressure regulating blades to rotate synchronously so that the lugs can move radially.

[0006] By adopting the above technical solution, the transmission component converts the real-time movement of the suspension arm into the synchronous rotation of the pressure regulating blade. Compared with the traditional air pressure regulating system, it works with the suspension arm to achieve fine adjustment of the air suspension height, reduces the dependence on compressed gas, enables rapid dynamic response, improves the effect of suppressing road vibration, and reduces the wear and high maintenance cost risk of complex air circuit system.

[0007] At least three pressure regulating blades are arranged in an array around the outer periphery of the air suspension, which makes the radial force acting on the outer wall of the air suspension uniform and symmetrical, avoids local stress concentration, makes the adjustment process smooth, and improves driving stability and comfort.

[0008] Preferably, a vertical sleeve is coaxially arranged below the mounting bracket, and a control tube is slidably connected inside the sleeve. The top end of the control tube extends out of the sleeve, and the portion of the control tube extending out of the sleeve passes through the mounting bracket and is slidably connected to the mounting bracket. A movable plate is fixed to the portion of the control tube that passes through the mounting bracket. The movable plate is located between the mounting bracket and the mounting plate and is slidably connected to the mounting plate. The movable plate and the mounting plate are arranged coaxially. At least three connecting rods are hinged to the outer circumference of the movable plate. Each connecting rod is hinged to the bottom end of the adjacent pressure regulating blade. A strip-shaped limiting groove for the movement of the connecting rods passes through the mounting bracket.

[0009] Preferably, a short shaft is fixedly connected to the top of the pressure regulating blade, and an inclined waist-shaped hole is passed through the ear seat. The short shaft is inserted into the waist-shaped hole and slidably connected to the waist-shaped hole.

[0010] Preferably, the top of the pressure regulating blade has an outwardly extended portion that extends outward from the centerline of the air suspension and obliquely upward.

[0011] Preferably, the transmission assembly includes two annular plates fixed to the outer circumference of the control tube; the transmission assembly also includes a first mounting base and a second mounting base fixed to the vehicle frame, a first transmission rod is hinged to the first mounting base, and a second transmission rod is hinged to the second mounting base; one end of the first transmission rod is connected to a U-shaped claw, the U-shaped claw is sleeved outside the control tube and located between the two annular plates, the other end of the first transmission rod has a slot through it, a connecting shaft is slidably connected to it in the slot, the connecting shaft passes through the slot and is fixed to one end of the second transmission rod, and a control assembly is provided at the other end of the second transmission rod.

[0012] Preferably, the control assembly includes a fixed seat on the suspension arm, a limit block is fixed at the top of the fixed seat, and the limit block has a groove adapted to the second transmission rod on the side facing the second transmission rod, and the other end of the second transmission rod extends into the groove.

[0013] Preferably, the fixed seat and the suspension arm are slidably connected via a telescopic device.

[0014] Preferably, the telescopic device includes two supports fixed to the suspension arm, a screw and two guide rods fixed between the two supports, and the two guide rods are respectively located on both sides of the screw; The two guide rods are fitted with movable blocks that slide and connect with the guide rods. The fixed base is fixed on the movable blocks. A rotating shaft is rotatably connected to the movable blocks. Multiple toothed plates adapted to the screw are fixed on the outer wall of the rotating shaft. A motor that drives the rotating shaft to rotate is fixed on the movable blocks.

[0015] Preferably, two spring supports are fixed on the frame, and the first and second transmission rods are respectively provided with connecting pins. The spring supports and the corresponding connecting pins are connected by tension springs.

[0016] Preferably, the upper end of the air suspension is fixedly connected to the vehicle frame, the mounting bracket is fixedly connected to the suspension arm, the suspension arm is hinged to the vehicle frame, and the suspension arm is fixedly connected to the axle.

[0017] The beneficial effects of this invention are as follows: the transmission component converts the real-time movement of the suspension arm into the synchronous rotation of the pressure regulating blade. Compared with the traditional air pressure regulating system, it works with the suspension arm to achieve fine adjustment of the air suspension height, reduces the dependence on compressed gas, enables rapid dynamic response, improves the effect of suppressing road vibration, and reduces the wear and high maintenance cost risk of complex air circuit system. Attached Figure Description

[0018] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0019] Figure 1 This is a schematic diagram of the overall structure of this embodiment; Figure 2 This is a schematic diagram illustrating the structure of the first transmission rod in this embodiment; Figure 3 This embodiment Figure 2 Enlarged structural diagram at point A; Figure 4 This is a schematic diagram illustrating the structure of the U-shaped claw in this embodiment; Figure 5 This is a schematic diagram illustrating the structure of the movable plate in this embodiment; Figure 6 This is a schematic diagram illustrating the structure of the moving block in this embodiment; Figure 7 This is a schematic diagram illustrating the structure of the air suspension in this embodiment; Figure 8 This embodiment Figure 7 Enlarged structural diagram at point B.

[0020] Explanation of reference numerals in the attached figures: In the diagram: 1. Frame; 2. Air suspension; 3. Suspension arm; 4. Mounting bracket; 5. Pressure regulating blade; 6. Ear seat; 7. Sleeve; 8. Control tube; 9. Moving plate; 10. Connecting rod; 11. Strip-shaped limiting groove; 12. Short shaft; 13. Waist-shaped hole; 14. Outward expansion; 15. Annular plate; 16. First mounting seat; 17. Second mounting seat; 18. First transmission rod; 19. Second transmission rod; 20. U-shaped claw; 21. Fixed seat; 22. Limiting block; 23. Groove; 24. Support; 25. Screw; 26. Guide rod; 27. Moving block; 28. Rotating shaft; 29. ​​Gear; 30. Motor. Detailed Implementation

[0021] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0022] An air suspension with a height-adjustable structure, such as Figures 1-8 It includes a frame 1, an air suspension 2 and a suspension arm 3. The top of the air suspension 2 is fixedly connected to the frame 1, and the bottom of the air suspension 2 is connected to the suspension arm 3 through a pressure regulating component. The pressure regulating assembly includes a mounting plate fixedly connected to the bottom end of the air suspension 2. A mounting bracket 4 is fixedly mounted on the lower surface of the mounting plate. At least three pressure regulating blades 5 are hinged to the mounting bracket 4. The at least three pressure regulating blades 5 are arranged in an array around the outer periphery of the air suspension 2 and with the center line of the air suspension 2 as the center. At least three lugs 6 are connected to the outer wall of the air suspension 2, and the lugs 6 are movably connected to the end of the pressure regulating blade 5; A transmission assembly is also provided between the suspension arm 3 and the frame 1 to drive at least three pressure regulating blades 5 to rotate synchronously so that the lug 6 moves radially.

[0023] In the above design, the transmission component converts the real-time movement of the suspension arm 3 into the synchronous rotation of the pressure regulating blade 5. Compared with the traditional air pressure regulating system, the suspension arm 3 enables fine adjustment of the height of the air suspension 2, reduces the dependence on compressed gas, enables rapid dynamic response, improves the effect of suppressing road vibration, and reduces the wear and high maintenance cost risk of complex air circuit system.

[0024] At least three pressure regulating blades 5 are arranged in an array around the outer periphery of the air suspension 2, so that the radial force acting on the outer wall of the air suspension 2 is uniform and symmetrical, avoiding local stress concentration, making the adjustment process smooth, and improving driving stability and comfort.

[0025] like Figure 4 As shown, a vertical sleeve 7 is coaxially arranged below the mounting bracket 4. A control tube 8 is slidably connected inside the sleeve 7. The top end of the control tube 8 extends out of the sleeve 7, and the portion of the control tube 8 extending out of the sleeve 7 passes through the mounting bracket 4 and is slidably connected to the mounting bracket 4. A movable plate 9 is fixed to the portion of the control tube 8 that extends out of the mounting bracket 4. The movable plate 9 is located between the mounting bracket 4 and the mounting plate and is slidably connected to the mounting plate. The movable plate 9 is coaxially arranged with the mounting plate. At least three connecting rods 10 are hinged to the outer circumference of the movable plate 9. Each connecting rod 10 is hinged to the bottom end of the adjacent pressure regulating blade 5. A strip-shaped limiting groove 11 for the movement of the connecting rods 10 passes through the mounting bracket 4. The vertical movement of the control tube 8 causes the movable plate 9 to move vertically, and the movement of the movable plate 9 causes the pressure regulating blade 5, which is hinged to the movable plate 9, to rotate.

[0026] like Figure 8 As shown, a short shaft 12 is fixedly connected to the top of the pressure regulating blade 5, and an inclined waist-shaped hole 13 passes through the lug 6. The short shaft 12 is inserted into the waist-shaped hole 13 and slidably connected to it. By setting the waist-shaped hole 13, the pressure regulating blade 5 is prevented from being stuck.

[0027] like Figure 4 and Figure 5 As shown, the top of the pressure regulating blade 5 is provided with an outwardly expanding portion 14 that extends obliquely upward away from the centerline of the air suspension 2. When the pressure regulating blade 5 is rotated in a controlled direction away from the air suspension 2, the outwardly expanding portion 14 is used to provide clearance space for the reduced height of the outer wall of the air suspension 2, preventing it from interfering with or getting stuck with the pressure regulating blade 5.

[0028] like Figure 1 and Figure 2 As shown, the transmission assembly includes two annular plates 15 fixed to the outer circumference of the control tube 8; the transmission assembly also includes a first mounting base 16 and a second mounting base 17 fixed to the frame 1. A first transmission rod 18 is hinged to the first mounting base 16, and a second transmission rod 19 is hinged to the second mounting base 17; one end of the first transmission rod 18 is connected to a U-shaped claw 20, which is sleeved on the outside of the control tube 8 and located between the two annular plates 15; the other end of the first transmission rod 18 has a slot through which a connecting shaft is slidably connected, and the connecting shaft passes through the slot and is fixed to one end of the second transmission rod 19; the other end of the second transmission rod 19 is provided with a control assembly.

[0029] The control assembly includes a fixed seat 21 on the suspension arm 3. A limit block 22 is fixed at the top of the fixed seat 21. The limit block 22 has a groove 23 on the side facing the second transmission rod 19 that is adapted to the second transmission rod 19. The other end of the second transmission rod 19 extends into the groove 23.

[0030] The fixed seat 21 and the suspension arm 3 are slidably connected via a telescopic device. By setting the telescopic device, the limiting block 22 and the second transmission rod 19 can be selectively connected or separated. In bumpy outdoor environments, the fixed seat 21 can be moved to disconnect the limiting block 22 from the second transmission rod 19, restoring the air suspension 2 to its free state.

[0031] The telescopic device includes two supports 24 fixed on the suspension arm 3. A screw 25 and two guide rods 26 are fixed between the two supports 24. The two guide rods 26 are located on both sides of the screw 25. The two guide rods 26 are fitted with movable blocks 27 that are slidably connected to the guide rods 26. A fixed seat 21 is fixed on the movable block 27. A rotating shaft 28 is rotatably connected to the movable block 27. Multiple toothed pieces 29 that are adapted to the screw 25 are fixed on the outer wall of the rotating shaft 28. A motor 30 that drives the rotating shaft 28 to rotate is fixed on the upper movable block 27.

[0032] Two spring supports are fixed on the frame 1. Connecting pins are respectively provided on the first transmission rod 18 and the second transmission rod 19. The spring supports and the corresponding connecting pins are connected by a tension spring. The two ends of the tension spring are hooked on the spring supports and the connecting pins respectively, so that after the transmission rod is driven by an external force, it can return to its original position under the tension of the tension spring.

[0033] The upper end of the air suspension 2 is fixedly connected to the frame 1, and the mounting bracket 4 is fixedly connected to the suspension arm 3. The suspension arm 3 is hinged to the frame 1 and fixedly connected to the axle. The mounting bracket 4 includes an upper transverse plate located on the upper side and a lower transverse plate located below the upper transverse plate. The upper transverse plate and the lower transverse plate are fixed together by several vertical support rods. The movable plate 9 is located above the upper transverse plate. The bottom end of the sleeve 7 is fixed to the lower transverse plate. The control tube 8 is located inside the sleeve 7 and is slidably connected to the sleeve 7. The top end of the control tube 8 extends out of the sleeve 7 and passes through the upper transverse plate and is slidably connected to the upper transverse plate. The control tube 8 passes through the upper transverse plate and is fixed to the movable plate 9. The lower transverse plate is fixed to the suspension arm 3.

[0034] When in use, the power is turned on and the switch is turned on. When the car is driving slowly and the road surface is relatively flat with only a few potholes, the motor 30 provides power to drive the rotating shaft 28, which is fixed coaxially with the output shaft of the motor 30, to rotate. The rotation of the rotating shaft 28 will drive the toothed plate 29 to rotate. The rotating toothed plate 29 rotates and cooperates with the screw 25, causing the moving block 27 to move along the center line of the guide rod 26. The movement of the moving block 27 will drive the fixed seat 21, which is fixedly connected to the moving block 27, to move, so that the end of the second transmission rod 19 extends into the groove 23 of the limiting block 22. During operation, as the suspension arm 3 vibrates and moves up and down, the distance between the suspension arm 3 and the frame 1 changes continuously. The suspension arm 3 drives the second transmission rod 19 to rotate around the hinge connection point of the second mounting base 17 and the second transmission rod 19. The rotation of the second transmission rod 19 drives the first transmission rod 18, which is movably connected to the second transmission rod 19, to rotate around the hinge connection point of the first mounting base 16 and the first transmission rod 18, thereby driving the U-shaped claw 20 to move. The outer diameter of the annular plate 15 is larger than the width of the U-shaped claw 20. Through the annular plate 15 and the U-shaped claw... When the U-shaped claw 20 moves, it will cause the control tube 8 to move vertically. The vertical movement of the control tube 8 will cause the moving plate 9, which is fixed to the control tube 8, to move vertically. The movement of the moving plate 9 will cause the connecting rod 10, which is hinged to the moving plate 9, to rotate. The rotation of the connecting rod 10 will cause the pressure regulating blade 5, which is hinged to the connecting rod 10, to rotate. The rotation of the pressure regulating blade 5 will apply a radial force to the outer wall of the air suspension 2, so that the air suspension 2 will be compressed and lengthened when the axle vibrates upward and stretched and shortened when the axle vibrates downward. When the car is traveling at high speed or the road surface is bumpy, the telescopic device drives the fixed seat 21 to move in the opposite direction, so that the limit block 22 is separated from the second transmission rod 19, restoring the air suspension 2 to a free state. This not only prevents the negative effects of the device not being able to adjust properly, but also protects the device from overload impact.

[0035] Obviously, those skilled in the art can make various modifications and variations to this invention without departing from its spirit and scope. Therefore, if these modifications and variations fall within the scope of the claims of this invention and their equivalents, this invention also intends to include these modifications and variations.

Claims

1. An air suspension with a height-adjustable structure, comprising a vehicle frame (1), an air suspension (2), and a suspension control arm (3), characterized in that: The top of the air suspension (2) is fixedly connected to the vehicle frame (1), and the bottom of the air suspension (2) is connected to the suspension arm (3) through a pressure regulating component; The pressure regulating assembly includes a mounting plate fixedly connected to the bottom end of the air suspension (2). A mounting bracket (4) is fixed on the lower surface of the mounting plate. At least three pressure regulating blades (5) are hinged on the mounting bracket (4). The at least three pressure regulating blades (5) surround the outer periphery of the air suspension (2) and are arranged in an array with the center line of the air suspension (2) as the center. The outer wall of the air suspension (2) is connected to at least three lugs (6), and the lugs (6) are movably connected to the end of the pressure regulating blade (5); A transmission assembly is also provided between the suspension arm (3) and the frame (1) to drive at least three pressure regulating blades (5) to rotate synchronously so that the ear seat (6) moves radially.

2. An air suspension with a height-adjustable structure as described in claim 1, characterized in that, A vertical sleeve (7) is coaxially arranged below the mounting bracket (4). A control tube (8) is slidably connected inside the sleeve (7). The top end of the control tube (8) extends out of the sleeve (7). The part of the control tube (8) extending out of the sleeve (7) passes through the mounting bracket (4) and is slidably connected to the mounting bracket (4). A movable plate (9) is fixed to the part of the control tube (8) that passes out of the mounting bracket (4). The movable plate (9) is located between the mounting bracket (4) and the mounting plate and is slidably connected to the mounting plate. The movable plate (9) is coaxially arranged with the mounting plate. At least three connecting rods (10) are hinged to the outer circumference of the movable plate (9). Each connecting rod (10) is hinged to the bottom end of the adjacent pressure regulating blade (5). A strip-shaped limiting groove (11) for the connecting rods (10) to move is provided through the mounting bracket (4).

3. An air suspension with a height-adjustable structure as described in claim 1, characterized in that, The pressure regulating blade (5) is fixedly connected to a short shaft (12) at its top end. An inclined waist-shaped hole (13) is passed through the ear seat (6). The short shaft (12) is inserted into the waist-shaped hole (13) and is slidably connected to the waist-shaped hole (13).

4. An air suspension with a height-adjustable structure as described in claim 1, characterized in that, The top of the pressure regulating blade (5) is provided with an outwardly extended portion (14) that extends outward from the center line of the air suspension (2) and obliquely upward.

5. An air suspension with a height-adjustable structure as described in claim 2, characterized in that, The transmission assembly includes two annular plates (15) fixed to the outer circumference of the control tube (8); The transmission assembly also includes a first mounting base (16) and a second mounting base (17) fixed to the frame (1), wherein a first transmission rod (18) is hinged to the first mounting base (16) and a second transmission rod (19) is hinged to the second mounting base (17). One end of the first transmission rod (18) is connected to a U-shaped claw (20), which is sleeved outside the control tube (8) and located between two annular plates (15). The other end of the first transmission rod (18) has a strip groove through which a connecting shaft is slidably connected. The connecting shaft passes through the strip groove and is fixed to one end of the second transmission rod (19). The other end of the second transmission rod (19) is provided with a control component.

6. An air suspension with a height-adjustable structure as described in claim 5, characterized in that, The control component includes a fixed seat (21) on the suspension arm (3), a limit block (22) is fixed at the top of the fixed seat (21), and a groove (23) adapted to the second transmission rod (19) is opened on the side of the limit block (22) facing the second transmission rod (19), and the other end of the second transmission rod (19) extends into the groove (23).

7. An air suspension with a height-adjustable structure as described in claim 6, characterized in that, The fixed seat (21) and the suspension arm (3) are slidably connected by a telescopic device.

8. An air suspension with a height-adjustable structure as described in claim 7, characterized in that, The telescopic device includes two supports (24) fixed on the suspension arm (3), and a screw (25) and two guide rods (26) are fixed between the two supports (24). The two guide rods (26) are located on both sides of the screw (25). The two guide rods (26) are fitted with movable blocks (27) that are slidably connected to the guide rods (26). The fixed seat (21) is fixed on the movable block (27). A rotating shaft (28) is rotatably connected to the movable block (27). Multiple toothed plates (29) adapted to the screw (25) are fixed on the outer wall of the rotating shaft (28). A motor (30) that drives the rotating shaft (28) to rotate is fixed on the movable block (27).

9. An air suspension with a height-adjustable structure as described in claim 5, characterized in that, Two spring supports are fixed on the frame (1). The first transmission rod (18) and the second transmission rod (19) are respectively provided with connecting pins. The spring supports and the corresponding connecting pins are connected by tension springs.

10. An air suspension with a height-adjustable structure as described in claim 1, characterized in that, The upper end of the air suspension (2) is fixedly connected to the vehicle frame (1), the mounting bracket (4) is fixedly connected to the suspension arm (3), the suspension arm (3) is hinged to the vehicle frame (1), and the suspension arm (3) is fixedly connected to the axle.

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