Variable-rigidity shock absorber for new energy automobile

Abstract

The invention discloses a variable-rigidity shock absorber for a new energy automobile, and belongs to the technical field of shock absorbers, the variable-rigidity shock absorber comprises a shock absorber main body and a piston rod arranged on the shock absorber main body, the piston rod is sleeved with a shock absorber spring, and the piston rod is in threaded connection with a nut plate; according to the variable-rigidity shock absorber for the new energy automobile, the lower portion of the shock absorber body moves upwards to compress a shock absorber spring, an air cylinder is driven to move upwards in cooperation with a mounting plate, a connecting rod pushes a piston plate to slide towards the interior of the air cylinder, and air in the air cylinder is compressed and extruded out of a rubber air outlet pipe; the shock absorber body is extruded out through the gas in the shock absorber spring and the gas cylinder, common shock absorption is achieved, and even if a vehicle suddenly drives into a bumpy road surface from a flat road surface, the preset rigidity of the shock absorber spring can not adapt to new shock conditions in time, the gas in the gas cylinder can be automatically compressed and extruded out, and shock absorption is achieved. And the damping effect and the driving comfort are improved.

Description

Technical Field

[0001] The present invention relates to the technical field of shock absorbers, and particularly to a variable stiffness shock absorber for new energy vehicles. Background Art

[0002] During the driving process of a vehicle, shocks often occur due to ground problems, which can easily cause the driver to accidentally touch various operating components, thereby resulting in safety problems. Shock absorbers can well solve the above problems, so they are widely used in vehicles.

[0003] After retrieval, a patent with the Chinese patent publication number CN113503333A discloses a damping adjustable airbag shock absorber, which includes a shock absorber body and an airbag device connected to the shock absorber. An adjustment component for adjusting damping is provided on the airbag device. The adjustment component includes a thread provided on the shock absorber body, a seal provided on the airbag device, and a thread provided on the airbag device that matches the shock absorber body; the airbag device is connected to the shock absorber body through a thread and is sealed with the shock absorber body through a seal; the thread stroke on the airbag device matches the thread stroke on the shock absorber body, and the airbag device and the shock absorber body adjust the damping in the airbag device by the connection depth of the thread. The following deficiencies exist in the above patent: Most of the existing automotive shock absorbers currently use hydraulic shock absorbers. However, when using hydraulic shock absorbers at present, the stiffness of most hydraulic shock absorbers usually adopts the method of compressing the spring, changing the pre-tightening force of the spring or using a variable pitch spring to adjust the stiffness of the shock absorber. However, although this method can adjust the stiffness of the shock absorber, relying solely on changing the pre-tightening force of the spring or the variable pitch spring on the shock absorber is relatively single. Once the spring stiffness is set or adjusted, it cannot instantaneously change according to the real-time road conditions and vehicle dynamics during driving. When the vehicle suddenly drives from a flat road surface into a potholed road surface, the pre-set spring stiffness may not be able to adapt to the new vibration situation in time, resulting in a deterioration of the shock absorption effect and affecting the driving comfort. Summary of the Invention

[0004] The purpose of the present invention is to solve the problem in the prior art that by simply changing the stiffness of the spring, it is impossible to timely adapt to the new vibration situation, resulting in a deterioration of the shock absorption effect, and to propose a variable stiffness shock absorber for new energy vehicles.

[0005] In order to achieve the above purpose, the present invention adopts the following technical solutions: A variable stiffness shock absorber for a new energy vehicle, comprising a shock absorber body and a piston rod arranged on the shock absorber body. A shock absorber spring is sleeved on the piston rod, and a nut is threadedly connected to the piston rod. The bottom of the shock absorber body is fixedly connected with a mounting plate, and a turntable is fixedly sleeved on the nut. It also includes an air cylinder fixedly connected to the mounting plate. A piston plate is slidably connected inside the air cylinder. The top of the piston plate is fixedly connected with a connecting rod, and one end of the connecting rod extends to the outside and abuts against the turntable. The air cylinder is fixedly communicated with a rubber air outlet pipe and an air suction pipe. A first return spring is sleeved on the connecting rod, and both ends of the first return spring are fixedly connected with the air cylinder and the connecting rod respectively. When the shock absorber body moves upward as a whole, the shock absorber spring is compressed, the connecting rod pushes the piston plate to compress the gas in the air cylinder, and the gas is discharged from the rubber air outlet pipe, so that the shock absorber body is shock-absorbed.

[0006] Preferably, a lower spring pad is fixedly connected to the shock absorber body, threads corresponding to the nut are provided on the piston rod, an upper shock absorber connection ring is fixedly connected to the top of the piston rod, and a lower shock absorber connection ring is fixedly connected to the bottom of the shock absorber body.

[0007] Preferably, a handle is fixedly connected to the top of the turntable. A circular backing plate penetrates through the piston rod near the bottom of the nut, and the circular backing plate is slidably connected to the piston rod. Both ends of the shock absorber spring abut against the lower spring pad and the circular backing plate respectively.

[0008] Preferably, a sleeve is rotatably connected to the mounting plate. A first tooth groove is provided on the outer wall of the sleeve for one week. A sliding rod is fixedly connected to one side of the mounting plate. Extension plates are fixedly connected to both sides of the circular backing plate. A rotating rod is rotatably connected to the bottom of one of the extension plates.

[0009] Preferably, a first gear meshing with the first tooth groove is fixedly connected to the bottom of the rotating rod. A round rod is fixedly connected to the bottom of the first gear. Slide plates are fixedly connected to both sides of the round rod. A second return spring is rotatably connected to the bottom of the round rod. The slide plates are slidably connected to the outside of a rotating cylinder.

[0010] Preferably, a chute corresponding to the round rod and the slide plates is provided on the inner wall of the rotating cylinder. The end of the second return spring far from the round rod is rotatably connected to the bottom inner wall of the rotating cylinder. A spiral chute corresponding to the sliding rod is provided on the outer wall of the rotating cylinder.

[0011] Preferably, four vertical groove plates are fixedly connected to the inner wall of the sleeve for one week. Brush rods are slidably connected in the four vertical groove plates. Third return springs are fixedly connected between the bottoms of the four brush rods and the bottom walls of the vertical groove plates. The tops of the four brush rods abut against the extension plates.

[0012] Preferably, one end of the rubber air outlet pipe is fixedly communicated with two connecting pipes, and spray heads are fixedly installed on both of the two connecting pipes.

[0013] Preferably, a bearing seat is fixedly connected to the mounting plate close to the rubber air outlet pipe, a bidirectional screw rod is rotatably connected to the bearing seat, two threaded plates are threadedly connected to the bidirectional screw rod, arc-shaped clamping plates are fixedly connected to both of the two threaded plates, a guide rod is fixedly connected to the bearing seat, the guide rod penetrates through the two threaded plates and is slidably connected to the two threaded plates.

[0014] Preferably, the two arc-shaped clamping plates are respectively arranged on both sides of the rubber air outlet pipe, a second gear is fixedly connected to one end of the bidirectional screw rod away from the bearing seat, an L-shaped plate is fixedly connected to one side of the circular backing plate, a second tooth groove corresponding to the second gear is formed in one side of the L-shaped plate, and through holes corresponding to the L-shaped plate and the second gear are formed in the mounting plate.

[0015] Compared with the prior art, the present invention provides a variable stiffness shock absorber for a new energy vehicle, and has the following beneficial effects: 1. For the variable stiffness shock absorber for a new energy vehicle, when the lower part of the shock absorber body moves upward to compress the shock absorber spring, cooperating with components such as the piston rod and the oil cylinder inside the shock absorber body to achieve the effect of shock absorption and buffering. At the same time, the mounting plate will also move upward, causing the air cylinder to move upward, enabling the connecting rod to push the piston plate to slide towards the inside of the air cylinder, compressing the gas in the air cylinder and squeezing it out from the rubber air outlet pipe. Thus, the shock absorber body realizes common shock absorption through the shock absorber spring and the gas squeezed out from the air cylinder. Even when the vehicle suddenly drives from a flat road surface into a potholed road surface, and the preset stiffness of the shock absorber spring may not be able to adapt to the new vibration situation in time, the gas in the air cylinder can be automatically compressed and squeezed out, improving the shock absorption effect and driving comfort.

[0016] 2. For the variable stiffness shock absorber for a new energy vehicle, by holding the handle to drive the turntable to rotate, the turntable drives the nut to rotate and move downward on the piston rod, causing the circular backing plate to slide downward to compress the shock absorber spring, increasing the stiffness of the shock absorber spring, and thus realizing the stiffness adjustment of the shock absorber body.

[0017] 3. When the variable stiffness shock absorber for new energy vehicles moves upward to compress the shock absorber spring, the mounting plate is driven to move upward at the same time. The mounting plate drives the sliding rod to contact the spiral chute on the outer wall of the rotating cylinder, causing the rotating cylinder to rotate. The rotating cylinder drives the round rod and the sliding plate inside it to rotate simultaneously, and then drives the first gear to rotate and mesh with the first tooth groove on the outer wall of the sleeve, causing the whole sleeve to rotate. Furthermore, it will drive the four vertical groove plates on its inner wall and the four brush rods inside it to rotate simultaneously, and rotate around the caked soil, dust particles, etc. attached to the shock absorber spring to brush them off. Combining the up and down compression of the shock absorber spring during use and the vibration during vehicle driving, the caked soil and other particles on the shock absorber spring are brushed off and vibrated off, which can prevent the corrosion of the shock absorber spring, reduce wear, and maintain elasticity, contributing to improving the driving experience, increasing comfort, reducing noise and many other benefits. Compared with the traditional manual disassembly and treatment, it has the advantage of automatic treatment and can achieve automatic cleaning without manual assistance.

[0018] 4. When the four brush rods rotate to clean the shock absorber spring, the gas in the air cylinder also reciprocates and is discharged from the rubber air outlet pipe. As can be seen from the accompanying drawings of the specification, the gas in the rubber air outlet pipe passes through two connecting pipes and is respectively extruded from the two nozzles onto the rotating brush rods, continuously spraying airflows to assist the cleaning effect of the brush rods on the soil on the shock absorber spring, further improving the cleaning effect of the shock absorber spring. At the same time, the sprayed airflows can also accelerate the rapid drying of rainwater and the like on the shock absorber, further preventing the rainwater from corroding the shock absorber spring. The one-way setting of the two nozzles can cooperate with the driving direction of the vehicle to spray airflows in one direction for the brushed-off soil and dust.

[0019] 5. When the mounting plate rises to a certain extent, it will automatically drive the second gear on the bearing seat to contact and mesh with the second tooth groove on the L-shaped plate, causing the second gear to rotate. At the same time, it drives the bidirectional screw rod to rotate, causing the two threaded plates to drive the two arc-shaped clamping plates to approach each other and clamp and squeeze the rubber air outlet pipe, reducing the gas output in the rubber air outlet pipe on the air cylinder, thereby increasing the resistance of the piston plate to compress the gas downward, so that the upward movement distance of the mounting plate and the shock absorber body is shortened, automatically increasing the stiffness of the shock absorber body to adapt to poor road conditions. It can automatically adjust the stiffness of the shock absorber body according to the road conditions. Even when encountering a potholed road section, it can also adjust the stiffness of the shock absorber body through the gas outflow volume in the air cylinder, automatically adapting to the road conditions. And when the rubber air outlet pipe is clamped and the gas outflow path becomes smaller, the gas flow rate ejected from the nozzle will be faster and the pressure will be higher, further improving the removal effect of the caked soil on the shock absorber spring. Description of the Drawings

[0020] Figure 1Schematic diagram of the overall structure of a variable stiffness shock absorber for a new energy vehicle proposed by the present invention; Figure 2 Schematic diagram of the side structure of a variable stiffness shock absorber for a new energy vehicle proposed by the present invention; Figure 3 Front view structure schematic diagram of a variable stiffness shock absorber for a new energy vehicle proposed by the present invention; Figure 4 Schematic diagram of the internal structure of the air cylinder in a variable stiffness shock absorber for a new energy vehicle proposed by the present invention; Figure 5 Proposed by the present invention Figure 4 Schematic diagram of the structure of part A in Figure 6 Proposed by the present invention Figure 4 Schematic diagram of the structure of part B in Figure 7 Right view structure schematic diagram of a variable stiffness shock absorber for a new energy vehicle proposed by the present invention; Figure 8 Schematic diagram of the structure of the shock absorber body, nut, circular backing plate, and piston rod in a variable stiffness shock absorber for a new energy vehicle proposed by the present invention; Figure 9 Schematic diagram of the internal structure of the rotating cylinder, third return spring, and second return spring in a variable stiffness shock absorber for a new energy vehicle proposed by the present invention; Figure 10 Proposed by the present invention Figure 9 Schematic diagram of the structure of part C in Figure 11 Proposed by the present invention Figure 9 Schematic diagram of the structure of part D in Figure 12 Schematic diagram of the internal structure of the sleeve, brush rod, nut, and circular backing plate in a variable stiffness shock absorber for a new energy vehicle proposed by the present invention; Figure 13 Proposed by the present invention Figure 12 Schematic diagram of the structure of part E in Figure 14 Proposed by the present invention Figure 12 Schematic diagram of the structure of part F in

[0021] In the figure: 1. Shock absorber body; 2. Piston rod; 3. Shock absorber spring; 4. Nut; 5. Mounting plate; 6. Turntable; 7. Air cylinder; 8. Piston plate; 9. Connecting rod; 10. Rubber outlet pipe; 11. Suction pipe; 12. First return spring; 13. Lower spring pad; 14. Upper shock absorber connecting ring; 15. Lower shock absorber connecting ring; 16. Handle; 17. Circular backing plate; 18. Sleeve; 19. First tooth groove; 20. Slide bar; 21. Extension plate; 22. Rotating rod; 23. First gear; 24. Round rod; 25. Slide plate; 26. Second return spring; 27. Rotating cylinder; 28. Vertical groove plate; 29. Brush rod; 30. Third return spring; 31. Connecting pipe; 32. Sprayer; 33. Bearing seat; 34. Bidirectional screw; 35. Threaded plate; 36. Arc-shaped clamping plate; 37. Guide rod; 38. Second gear; 39. L-shaped plate; 40. Second tooth groove. Specific embodiments

[0022] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments.

[0023] In the description of the present invention, it should be understood that the orientation or positional relationships indicated by the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", etc. are based on the orientation or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying 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 construed as a limitation to the present invention.

[0024] Embodiment 1: Refer to Figures 1 - 10 , a variable stiffness shock absorber for a new energy vehicle, including a shock absorber body 1 and a piston rod 2 provided on the shock absorber body 1. A shock absorber spring 3 is sleeved on the piston rod 2, and a nut 4 is threadedly connected to the piston rod 2. The bottom of the shock absorber body 1 is fixedly connected to a mounting plate 5. A turntable 6 is fixedly sleeved on the nut 4. It also includes an air cylinder 7 fixedly connected to the mounting plate 5. A piston plate 8 is slidably connected inside the air cylinder 7. The top of the piston plate 8 is fixedly connected to a connecting rod 9. One end of the connecting rod 9 extends to the outside and abuts against the turntable 6. The air cylinder 7 is fixedly communicated with a rubber outlet pipe 10 and a suction pipe 11. A first return spring 12 is sleeved on the connecting rod 9. The two ends of the first return spring 12 are fixedly connected to the air cylinder 7 and the connecting rod 9 respectively; when the shock absorber body 1 moves upward as a whole, the shock absorber spring 3 is compressed, and the connecting rod 9 pushes the piston plate 8 to compress the gas in the air cylinder 7, and the gas is discharged from the rubber outlet pipe 10, so that the shock absorber body 1 is shock-absorbed.

[0025] In the present invention, when using the shock absorber, after installing the shock absorber body 1 on the vehicle, during the vehicle's travel, when encountering a potholed road section, the lower part of the shock absorber body 1 moves upward to compress the shock absorber spring 3, and together with components such as the piston rod 2 and the oil cylinder inside the shock absorber body 1, the effect of shock absorption and buffering is achieved. At the same time, the mounting plate 5 also moves upward, causing the air cylinder 7 to move upward, enabling the connecting rod 9 to push the piston plate 8 to slide inwardly in the air cylinder 7, compressing the gas in the air cylinder 7 and squeezing it out from the rubber air outlet pipe 10. Thus, the shock absorber body 1 realizes common shock absorption through the shock absorber spring 3 and the gas squeezed out from the air cylinder 7. Even when the vehicle suddenly drives from a flat road surface into a potholed road surface, and the preset stiffness of the shock absorber spring 3 may not be able to adapt to the new vibration situation in time, the gas in the air cylinder 7 can be automatically compressed and squeezed out, improving the shock absorption effect and driving comfort; when the vehicle travels on a flat road section, under the action of the first return spring 12, the connecting rod 9 can pull the piston plate 8 to automatically reset, forming a negative pressure chamber in the air cylinder 7, and inhaling gas again through the air suction pipe 11 for storage, so as to adapt to the new vibration situation next time; It should be noted that one-way valves are installed in both the rubber air outlet pipe 10 and the air suction pipe 11. The rubber air outlet pipe 10 is preferably a relatively thin pipeline, and components such as the oil cylinder and the piston rod 2 inside the shock absorber body 1 are prior art.

[0026] Example Two: Refer to Figures 1 - 10 , which is basically the same as Example One. Further, a lower spring pad 13 is fixedly connected to the shock absorber body 1, threads corresponding to the nut 4 are provided on the piston rod 2, an upper shock absorber connection ring 14 is fixedly connected to the top of the piston rod 2, and a lower shock absorber connection ring 15 is fixedly connected to the bottom of the shock absorber body 1.

[0027] In the present invention, the shock absorber can be installed through the upper shock absorber connection ring 14 and the lower shock absorber connection ring 15.

[0028] A grip 16 is fixedly connected to the top of the turntable 6. A circular backing plate 17 penetrates through the piston rod 2 near the bottom of the nut 4, and the circular backing plate 17 is slidably connected to the piston rod 2. Both ends of the shock absorber spring 3 abut against the lower spring pad 13 and the circular backing plate 17 respectively.

[0029] In the present invention, when adjusting the stiffness of the shock absorber, only by holding the grip 16 with the hand and driving the turntable 6 to rotate, the turntable 6 drives the nut 4 to rotate and move downward on the piston rod 2, causing the circular backing plate 17 to slide downward to compress the shock absorber spring 3, increasing the stiffness of the shock absorber spring 3, and thus realizing the adjustment of the stiffness of the shock absorber body 1.

[0030] Example Three: Refer to Figures 1 - 13, which is basically the same as the first embodiment. Further, a sleeve 18 is rotatably connected to the mounting plate 5. A first tooth groove 19 is provided around the outer wall of the sleeve 18. A sliding rod 20 is fixedly connected to one side of the mounting plate 5. Extension plates 21 are fixedly connected to both sides of the circular backing plate 17. A rotating rod 22 is rotatably connected to the bottom of one of the extension plates 21.

[0031] A first gear 23 that meshes with the first tooth groove 19 is fixedly connected to the bottom of the rotating rod 22. A round rod 24 is fixedly connected to the bottom of the first gear 23. Slide plates 25 are fixedly connected to both sides of the round rod 24. A second return spring 26 is rotatably connected to the bottom of the round rod 24. The outer part of the slide plate 25 is slidably connected to a rotating cylinder 27.

[0032] Chute grooves corresponding to the round rod 24 and the slide plates 25 are provided on the inner wall of the rotating cylinder 27. One end of the second return spring 26 away from the round rod 24 is rotatably connected to the bottom inner wall of the rotating cylinder 27. A spiral chute groove corresponding to the sliding rod 20 is provided on the outer wall of the rotating cylinder 27.

[0033] Four vertical groove plates 28 are fixedly connected around the inner wall of the sleeve 18. Brush rods 29 are slidably connected in the four vertical groove plates 28. Third return springs 30 are fixedly connected between the bottoms of the four brush rods 29 and the bottom walls of the vertical groove plates 28. The tops of the four brush rods 29 are in contact with the extension plates 21.

[0034] In the present invention, during the driving process of an automobile, especially when driving on some unpaved roads, muddy roads or in rainy days, mixtures such as mud, dust and water on the road surface will be lifted by the air flow and centrifugal force generated when the wheels rotate and splash onto components such as the automobile chassis and shock absorbers. The shock absorber is located near the wheel and is in a position where it is easily splashed by dirt and other sundries. Over time, a large amount of mud will adhere to the surface. If this mud is not cleaned in time, it is likely to cause accelerated corrosion of the shock absorber spring 3, affect the shock absorption performance, and also exacerbate the wear of other components, cause abnormal noises, and even affect the vehicle's controllability; When the shock absorber body 1 moves upward to compress the shock absorber spring 3, it drives the mounting plate 5 to move upward at the same time. The mounting plate 5 drives the sliding rod 20 to abut against the spiral chute on the outer wall of the rotating cylinder 27, causing the rotating cylinder 27 to rotate. The rotating cylinder 27 drives the round rod 24 and the sliding plate 25 inside it to rotate simultaneously, and then drives the first gear 23 to rotate and mesh with the first tooth groove 19 on the outer wall of the sleeve 18, causing the whole sleeve 18 to rotate. Furthermore, it will drive the four vertical groove plates 28 on its inner wall and the four brush rods 29 inside it to rotate simultaneously, and rotate and brush off the caked soil, dust particles, etc. attached to the shock absorber spring 3. Cooperating with the up and down compression of the shock absorber spring 3 during use and the vibration during vehicle driving, the caked soil and other particles on the shock absorber spring 3 are brushed off and vibrated off, which can prevent the corrosion of the shock absorber spring 3, reduce wear, and maintain elasticity, contributing to improving the driving experience, increasing comfort, reducing noise and many other benefits. Compared with the traditional manual disassembly and treatment, it has the advantage of automatic treatment and can achieve automatic cleaning without manual assistance; It should be noted that the extension plate 21 can play a role in stably supporting the rotating rod 22. When the rotating grip 16 is rotated to increase the stiffness of the shock absorber body 1, the positions of the turntable 6 and the circular cushion plate 17 move downward as a whole. At this time, the round rod 24 can slide downward in the rotating cylinder 27 through the sliding plates 25 on both sides to compress the second return spring 26. The two ends of the second return spring 26 are rotatably connected between the round rod 24 and the bottom wall of the rotating cylinder 27 and will not become loose. At the same time, the first gear 23 will slide downward. Even if the first gear 23 slides downward, it will not disengage from the first tooth groove 19. No matter how the stiffness of the shock absorber body 1 changes, it will not affect the stable meshing of the first gear 23 and the first tooth groove 19; and when the positions of the turntable 6 and the circular cushion plate 17 move downward as a whole, the brush rod 29 will also slide downward on the vertical groove plate 28 to compress the third return spring 30. The brush rod 29 uses very thin and smooth bristles and will not affect the shock absorption effect of the shock absorber spring 3. Even when the shock absorber spring 3 is compressed to the maximum extent, it will not affect the rotation of the brush rod 29.

[0035] Example Four: Refer to Figures 1 - 13 , which is basically the same as Example One. Furthermore, one end of the rubber air outlet pipe 10 is fixedly communicated with two connecting pipes 31, and spray nozzles 32 are fixedly installed on both connecting pipes 31.

[0036] In the present invention, while the four brush rods 29 rotate to clean the shock absorber spring 3, the gas in the air cylinder 7 also reciprocates and discharges from the rubber air outlet pipe 10. As can be seen from the accompanying drawings of the specification, the gas in the rubber air outlet pipe 10 passes through two connecting pipes 31 and is respectively extruded from the two nozzles 32 to continuously eject air currents towards the rotating brush rods 29, assisting the brush rods 29 in cleaning the soil on the shock absorber spring 3, further improving the cleaning effect of the shock absorber spring 3. At the same time, the ejected air currents can also accelerate the rapid air drying of rainwater, etc. on the shock absorber spring 3, further preventing the rainwater from corroding the shock absorber spring 3. The one-way setting of the two nozzles 32 can cooperate with the driving direction of the vehicle to eject the brushed-off soil and dust towards one direction with air currents.

[0037] Embodiment Five: Refer to Figures 1 - 14 , which is basically the same as Embodiment One. Further, a bearing seat 33 is fixedly connected to the mounting plate 5 near the rubber air outlet pipe 10. A bidirectional screw 34 is rotatably connected to the bearing seat 33. Two threaded plates 35 are threadedly connected to the bidirectional screw 34. Arc-shaped clamping plates 36 are fixedly connected to both of the two threaded plates 35. A guide rod 37 is fixedly connected to the bearing seat 33. The guide rod 37 passes through the two threaded plates 35 and is slidably connected to the two threaded plates 35.

[0038] The two arc-shaped clamping plates 36 are respectively arranged on both sides of the rubber air outlet pipe 10. One end of the bidirectional screw 34 away from the bearing seat 33 is fixedly connected to a second gear 38. An L-shaped plate 39 is fixedly connected to one side of the circular cushion plate 17. A second tooth groove 40 corresponding to the second gear 38 is formed on one side of the L-shaped plate 39. Through holes corresponding to the L-shaped plate 39 and the second gear 38 are formed in the mounting plate 5.

[0039] In the present invention, during the driving of an automobile, when encountering different road sections, since the stiffness of the shock absorber main body 1 cannot be adjusted in time and the nut 4 is in a fixed state, when the shock absorber spring 3 is compressed to the maximum state, the stiffness of the shock absorber main body 1 needs to be adjusted. At this time, the mounting plate 5 will also drive the air cylinder 7 to rise to the maximum height. In order to improve the stability and comfort of the vehicle during driving, it is necessary to adjust the stiffness change of the shock absorber main body 1 in time. When the mounting plate 5 rises to a certain extent, it will automatically drive the second gear 38 on the bearing seat 33 to abut against and engage with the second tooth groove 40 on the L-shaped plate 39, causing the second gear 38 to rotate. At the same time, the bidirectional screw 34 is driven to rotate, so that the two threaded plates 35 drive the two arc-shaped clamping plates 36 to approach each other to clamp and squeeze the rubber air outlet pipe 10, reducing the gas output in the rubber air outlet pipe 10 of the air cylinder 7, thereby increasing the resistance of the piston plate 8 to compress the gas downward, so that the upward movement distance of the mounting plate 5 and the shock absorber main body 1 is shortened, automatically increasing the stiffness of the shock absorber main body 1, so as to adapt to poor road conditions, and the stiffness of the shock absorber main body 1 can be automatically adjusted according to the road conditions. Even when encountering a potholed road section, the stiffness of the shock absorber main body 1 can be adjusted by the gas outflow volume in the air cylinder 7, automatically adapting to the road conditions. Moreover, when the rubber air outlet pipe 10 is clamped and the gas outflow path becomes smaller, the gas flow rate ejected from the nozzle 32 will be faster and the pressure will be higher, further improving the effect of removing caked soil on the shock absorber spring 3, and they can promote each other; when the shock absorber main body 1 returns downward, the second gear 38 automatically meshes with the second tooth groove 40 on the L-shaped plate 39 in the reverse direction until it disengages, causing the bidirectional screw 34 to rotate in the reverse direction, so that the two arc-shaped clamping plates 36 move away from each other to release the clamping force on the rubber air outlet pipe 10, so that the rubber air outlet pipe 10 returns to its initial state, facilitating the next automatic adjustment of the stiffness of the shock absorber main body 1; It should be noted that when the bidirectional screw 34 rotates, the two arc-shaped clamping plates 36 can stably slide horizontally through the guide rod 37; through the through hole on the mounting plate 5, the downward movement of the L-shaped plate 39 and the rotation of the second gear 38 will not be hindered.

[0040] The above is only a preferred specific embodiment of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present invention, according to the technical solution and inventive concept of the present invention, makes equivalent substitutions or changes, and all should be covered within the protection scope of the present invention.

Claims

1. A variable stiffness shock absorber for new energy vehicles, comprising: A shock absorber body (1) and a piston rod (2) arranged on the shock absorber body (1), wherein a shock absorber spring (3) is sleeved on the piston rod (2), and a nut (4) is threadedly connected to the piston rod (2), characterized in that a mounting plate (5) is fixedly connected to the bottom of the shock absorber body (1), and a rotating disk (6) is fixedly sleeved on the nut (4), and further comprising: An air cylinder (7) is fixedly connected to the mounting plate (5), a piston plate (8) is slidably connected to the interior of the air cylinder (7), a connecting rod (9) is fixedly connected to the top of the piston plate (8), one end of the connecting rod (9) extends to the outside and abuts against the turntable (6), a rubber air outlet pipe (10) and an air intake pipe (11) are fixedly connected to the air cylinder (7), a first return spring (12) is sleeved on the connecting rod (9), and two ends of the first return spring (12) are respectively fixedly connected to the air cylinder (7) and the connecting rod (9); When the shock absorber body (1) moves upward as a whole, the shock absorber spring (3) is compressed, the connecting rod (9) pushes the piston plate (8) to compress the gas in the air cylinder (7), and the gas is discharged from the rubber air outlet pipe (10), so that the shock absorber body (1) is damped.

2. A variable stiffness shock absorber for new energy vehicles according to claim 1, characterized in that: A lower spring pad (13) is fixedly connected to the shock absorber body (1), a thread corresponding to the nut (4) is formed on the piston rod (2), an upper shock absorber connecting ring (14) is fixedly connected to the top of the piston rod (2), and a lower shock absorber connecting ring (15) is fixedly connected to the bottom of the shock absorber body (1).

3. A variable stiffness shock absorber for new energy vehicles according to claim 2, characterized in that: A handle (16) is fixedly connected to the top of the rotating disk (6), a circular pad (17) passes through the piston rod (2) near the bottom of the nut (4), the circular pad (17) is slidably connected to the piston rod (2), and the two ends of the shock absorber spring (3) are respectively against the lower spring pad (13) and the circular pad (17).

4. A variable stiffness shock absorber for new energy vehicles according to claim 3, characterized in that: A sleeve (18) is rotatably connected to the mounting plate (5), and a first tooth groove (19) is formed around the outer wall of the sleeve (18). A sliding rod (20) is fixedly connected to one side of the mounting plate (5), and extension plates (21) are fixedly connected to both sides of the circular pad (17), wherein a rotating rod (22) is rotatably connected to the bottom of one of the extension plates (21).

5. A variable stiffness shock absorber for new energy vehicles according to claim 4, characterized in that: The bottom of the rotating rod (22) is fixedly connected to a first gear (23) meshing with the first tooth groove (19); the bottom of the first gear (23) is fixedly connected to a round rod (24); both sides of the round rod (24) are fixedly connected to a slide plate (25); the bottom of the round rod (24) is rotatably connected to a second return spring (26); and the outside of the slide plate (25) is slidably connected to a rotating drum (27).

6. A variable stiffness shock absorber for new energy vehicles according to claim 5, characterized in that: The inner wall of the rotating cylinder (27) is provided with a sliding groove corresponding to the round rod (24) and the sliding plate (25); one end of the second return spring (26) away from the round rod (24) is rotatably connected to the bottom inner wall of the rotating cylinder (27); and the outer wall of the rotating cylinder (27) is provided with a spiral sliding groove corresponding to the sliding rod (20).

7. A variable stiffness shock absorber for new energy vehicles according to claim 6, characterized in that: Four vertical slot plates (28) are fixedly connected to the inner wall of the sleeve (18), and brush rods (29) are slidably connected inside the four vertical slot plates (28). A third return spring (30) is fixedly connected between the bottom of the four brush rods (29) and the bottom wall of the vertical slot plates (28), and the tops of the four brush rods (29) are in contact with the extension plate (21).

8. The variable stiffness shock absorber for new energy vehicles according to claim 1, characterized in that: One end of the rubber air outlet pipe (10) is fixedly connected to two connecting pipes (31), and a nozzle (32) is fixedly mounted on each of the two connecting pipes (31).

9. The variable stiffness shock absorber for new energy vehicles according to claim 3, characterized in that: A bearing seat (33) is fixedly connected to the mounting plate (5) near the rubber air outlet pipe (10), a bidirectional screw (34) is rotatably connected to the bearing seat (33), two threaded plates (35) are threadedly connected to the bidirectional screw (34), both of the two threaded plates (35) are fixedly connected to an arc-shaped clamping plate (36), and a guide rod (37) is fixedly connected to the bearing seat (33), the guide rod (37) passes through the two threaded plates (35) and is slidably connected to the two threaded plates (35).

10. A variable stiffness shock absorber for new energy vehicles according to claim 9, characterized in that: The two arc-shaped clamping plates (36) are respectively arranged on both sides of the rubber air outlet pipe (10); one end of the bidirectional screw (34) away from the bearing seat (33) is fixedly connected to the second gear (38); one side of the circular pad (17) is fixedly connected to the L-shaped plate (39); one side of the L-shaped plate (39) is provided with a second tooth groove (40) corresponding to the second gear (38); and the mounting plate (5) is provided with a through hole corresponding to the L-shaped plate (39) and the second gear (38).

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