Self-adaptive structure of suspension system

Abstract

The invention belongs to the technical field of air springs, and particularly relates to a self-adaptive structure of a suspension system, which comprises an additional chamber, an air spring is mounted in a vehicle body, the additional chamber is mounted on the outer side of the upper end of the air spring, an elastic dust cover is arranged at the lower end of the air spring, and an air bag cavity is formed in the air spring. A shock absorption damper is movably installed in the air bag cavity, a valve element in the direct-drive type electromagnetic valve serves as a closed structure by means of a spring of the self-adaptive elastic jacking piece, and therefore after air in the air bag cavity enters the direct-drive type electromagnetic valve, the valve element in the direct-drive type electromagnetic valve can be pushed, and the direct-drive type electromagnetic valve is in an open state; at the moment, the direct-driven electromagnetic valve is not electrified, a spring of the self-adaptive elastic jacking piece is compressed, then air in the air bag cavity enters the direct-driven electromagnetic valve firstly and then enters the additional cavity, the rigidity of the air spring at the moment is not too high, and the problem that in a traditional technical scheme, the comfort degree is reduced is solved.

Description

Technical Field

[0001] The invention belongs to the field of air springs, in particular to an adaptive structure of a suspension system. Background Art

[0002] The suspension system includes air springs arranged inside the vehicle body. The air springs can support the weight of the vehicle body and cushion the vibration from the wheels. When on the road, the air springs adjust the air in the air spring airbag according to the vibration of the road surface with the cooperation of their internal shock absorber damper, thereby automatically adjusting the height of the vehicle body. At this time, the air spring undergoes elastic deformation, the volume of the airbag cavity decreases, the effective area becomes larger, the pressure becomes greater, the rigidity of the vehicle body is higher, thereby enhancing the ability of the vehicle body to resist deformation when subjected to external force.

[0003] A patent document with publication number CN117366147A discloses an adaptive multi-chamber adjustable stiffness air spring, including a main air chamber, a No. 2 sensor module, a ventilation channel, a No. 1 auxiliary air chamber and a No. 2 auxiliary air chamber. The air pressure in the No. 2 auxiliary air chamber is adjusted to control the movement of the connecting rod so that the main air chamber is connected or closed to the auxiliary air chamber to achieve the purpose of adjusting the stiffness. The present invention is applicable to the field of air spring technology. By setting multiple auxiliary air chambers and adjustable ventilation channels, and equipping sensors and electronic control units, the function of automatically adjusting the stiffness according to the vehicle's motion state is realized.

[0004] In the traditional technical solution, when the vehicle body is excited by the road, the air spring airbag of the suspension system will be compressed, thereby reducing the volume of the airbag and compressing the air inside it. At this time, the internal pressure is relatively large, thereby increasing the body stiffness. However, excessive body stiffness will introduce unnecessary vibrations and reduce comfort. In the traditional technical solution, the deformation and compression of the air spring airbag will be accompanied by a strong pressure inside the airbag. At this time, the body stiffness will introduce unnecessary vibrations.

[0005] To this end, the present invention provides an adaptive structure of a suspension system. Summary of the invention

[0006] In order to make up for the deficiencies of the prior art, at least one technical problem raised in the background technology is solved.

[0007] The technical solution adopted by the present invention to solve the technical problem is as follows: an adaptive structure of a suspension system according to the present invention comprises an adaptive elastic lifting member, the suspension system comprises an air spring, the air spring is installed inside a vehicle body, an additional chamber is provided outside the air spring, the additional chamber is installed outside the upper end of the air spring, an elastic dust cover is provided at the lower end of the air spring, an airbag chamber is provided inside the air spring, and a shock absorbing damper is movably installed inside the airbag chamber; A direct-drive solenoid valve is installed inside the air spring, and the airbag cavity and the additional chamber are connected through the direct-drive solenoid valve; The self-adaptive elastic lifting member comprises a base and a thimble movably installed inside the base, a three-stage spring is installed above the base, and an armature is installed at the upper end of the thimble.

[0008] Preferably, the shock-absorbing damper comprises a damper shell installed inside the airbag cavity, a lifting guide column is slidably installed inside the damper shell, a shock-absorbing spring is installed inside the damper shell, the upper end of the damper shell is connected to the inner top of the air spring, and the upper end of the lifting guide column is connected to the bottom of the adaptive elastic lifting member Preferably, the base is fixedly mounted on the inner wall of the housing, and the top of the three-stage spring is connected to the bottom of the armature.

[0009] Preferably, a first air pipe is installed on the side of the direct-drive solenoid valve facing the shell, and a second air pipe is installed on the side of the direct-drive solenoid valve facing the airbag cavity. The second air pipe penetrates the partition and is connected with the inside of the airbag cavity.

[0010] Preferably, a guide groove cavity is also provided inside the direct-drive solenoid valve, and the guide groove cavity, air pipe one and air pipe two are connected, a valve core column is slidably installed inside the guide groove cavity, a compression spring is installed on the top of the valve core column, and the upper end of the compression spring is connected to the top wall of the guide groove cavity, and a plurality of pistons are fixedly installed on the outside of the valve core column.

[0011] Preferably, the top position of the adaptive elastic lifting member is located inside the guide groove cavity, and the distance between two adjacent pistons is greater than the diameter of the air pipe.

[0012] Preferably, the adaptive elastic lifting member includes a base fixedly mounted on the inner wall of the shell and a pin movably mounted inside the base, a three-stage spring is also installed above the base, an armature is installed on the upper end of the pin, and the top of the three-stage spring is connected to the bottom of the armature.

[0013] Preferably, the base is magnetically connected to the armature after being energized, and the armature is magnetically connected to the valve core column after being energized.

[0014] Preferably, a component slot 1, a component slot 2 and an electrical structure slot are sequentially provided inside the base from top to bottom, and an electromagnetism structure is installed inside the electrical structure slot.

[0015] Preferably, the first component groove is preferably a groove with a top diameter larger than a bottom diameter, and the second component groove is preferably a groove with a top and bottom diameter larger than a middle diameter.

[0016] Preferably, an adapting round block is installed on the outer side of the bottom of the ejector pin, and the adapting round block matches the component groove one. A plurality of U-shaped arc blocks are installed on the outer side of the lower end of the ejector pin through a spring guide column, and the whole formed by the plurality of U-shaped arc blocks matches the component groove two.

[0017] The beneficial effects of the present invention are as follows: 1. The adaptive structure of a suspension system described in the present invention is that when the air spring is compressed and the internal volume of the airbag cavity is reduced, the pressure inside the airbag cavity will increase and be greater than the internal pressure of the additional chamber. At this time, the gas inside the airbag cavity will flow to the inside of the additional chamber. At this time, the valve core inside the direct-drive solenoid valve relies on the spring of the adaptive elastic lifting part as a closed structure. Therefore, after the gas inside the airbag cavity enters the direct-drive solenoid valve, it will push the valve core inside the direct-drive solenoid valve, so that the direct-drive solenoid valve is in an open state. At this time, the direct-drive solenoid valve is not energized, and the spring of the adaptive elastic lifting part is compressed. Then, the gas inside the airbag cavity first enters the direct-drive solenoid valve and then enters the additional chamber. The stiffness of the air spring is not so high at this time, and the problem of reduced comfort in traditional technical solutions will not occur.

[0018] 2. The adaptive structure of a suspension system described in the present invention has different compression degrees of the air spring. When the air spring is compressed to a higher degree, the greater the internal pressure of the air spring, the faster the valve core will be pushed, and the higher the spring degree of the adaptive elastic lifting part will be compressed. That is, the interior of the additional chamber can relieve the pressure of the airbag chamber with a higher pressure. Conversely, the lower the pressure of the air spring, the less gas will enter the additional chamber. The internal gas pressure of the air spring, that is, the vehicle body stiffness, can be adaptively adjusted.

[0019] 3. The adaptive structure of a suspension system described in the present invention, when multiple U-shaped arc blocks are in component groove two, the spring guide column at the lower end of the U-shaped arc block and the ejector pin will be in a compressed state, increasing the friction between the U-shaped arc block and the inner wall of the component groove two, and together with the magnetic force of the base, counteracting the restoring force of the three-stage spring, which is helpful to extend the overall service life of the adaptive elastic lifting part. When the base is no longer energized, the three-stage spring changes from a compressed state to a restored state, which will lift the armature and the ejector pin. At this time, the inside of the U-shaped arc block can rise to the inside of component groove one under the action of the spring guide column, and will not affect the normal use of the adaptive elastic lifting part. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] The present invention will be further described below in conjunction with the accompanying drawings.

[0021] Figure 1 It is an overall stereogram of the present invention; Figure 2 It is a stereoscopic diagram of the shock absorbing damper and the adaptive elastic lifting member of the present invention; Figure 3It is a three-dimensional diagram of the adaptive elastic lifting member of the present invention; Figure 4 is a three-dimensional schematic diagram of an additional chamber in the present invention; Figure 5 It is a three-dimensional schematic diagram of the airbag cavity and the shock absorbing damper in the present invention; Figure 6 It is a three-dimensional schematic diagram of the direct-drive solenoid valve in the present invention; Figure 7 This is a schematic diagram of the disassembly of the direct-drive solenoid valve in the present invention; Figure 8 It is a three-dimensional schematic diagram of the valve core column in the present invention; Fig. 9 It is a schematic diagram of the disassembly of the base in the present invention; Fig.10 It is a schematic diagram of the U-shaped arc block in the present invention.

[0022] In the figure: 1. additional chamber; 11. outer shell; 12. partition; 2. air spring; 21. airbag chamber; 3. elastic dust cover; 4. shock-absorbing damper; 41. damper shell; 42. lifting guide column; 43. shock-absorbing spring; 5. direct-drive solenoid valve; 51. air pipe one; 52. air pipe two; 53. guide groove chamber; 54. valve core column; 55. compression spring; 56. piston; 6. adaptive elastic lifting part; 61. armature; 62. three-stage spring; 63. ejector pin; 64. base; 641. component groove one; 642. component groove two; 643. electrical structure groove; 65. adapter round block; 66. U-shaped arc block. DETAILED DESCRIPTION

[0023] In order to make the technical means, creative features, objectives and effects achieved by the present invention easy to understand, the present invention is further explained below in conjunction with specific implementation methods. Embodiment 1

[0024] like Figure 1-Figure 3 As shown, an adaptive structure of a suspension system according to an embodiment of the present invention comprises an adaptive elastic lifting member 6, the suspension system comprises an air spring 2, the air spring 2 is installed inside a vehicle body, an additional chamber 1 is provided outside the air spring 2, the additional chamber 1 is installed outside the upper end of the air spring 2, an elastic dust cover 3 is provided at the lower end of the air spring 2, an air bag cavity 21 is provided inside the air spring 2, and a shock absorbing damper 4 is movably installed inside the air bag cavity 21; A direct-drive solenoid valve 5 is installed inside the air spring 2, and the airbag chamber 21 and the additional chamber 1 are connected through the direct-drive solenoid valve 5; The shock-absorbing damper 4 includes a damper shell 41 installed inside the airbag cavity 21, a lifting guide column 42 is slidably installed inside the damper shell 41, a shock-absorbing spring 43 is installed inside the damper shell 41, the upper end of the damper shell 41 is connected to the inner top of the air spring 2, the upper end of the lifting guide column 42 is connected to the bottom of the adaptive elastic lifting member 6, and the top of the adaptive elastic lifting member 6 is connected to the internal valve core of the direct-drive solenoid valve 5; The adaptive elastic lifting member 6 includes a base 64 and a ejector pin 63 movably mounted inside the base 64 . A three-stage spring 62 is mounted above the base 64 , and an armature 61 is mounted on the upper end of the ejector pin 63 .

[0025] Specifically, during actual driving, after the vehicle body is excited by the road surface, the air spring 2 of the suspension system is subjected to external force, and the air spring 2 will be deformed and contracted as a whole. At this time, the elastic dust cover 3 contracts, reducing the internal volume of the airbag cavity 21. The volume of the airbag cavity 21 is reduced, the effective area becomes larger, the pressure becomes larger, and the rigidity of the vehicle body is higher. At this time, the vehicle body will introduce unnecessary vibration, affecting the driving comfort. In this device, when the volume of the airbag cavity 21 becomes smaller, that is, the air spring 2 is compressed as a whole, the lifting guide column is raised and lowered. The guide column 42 will descend and compress the shock absorbing spring 43, and the top of the lifting guide column 42 is connected to the lower end of the ejector pin 63, thereby pushing the ejector pin 63 and the armature 61 up. At this time, the three-stage spring 62 is compressed. The direct-drive solenoid valve 5 is composed of a valve body and a valve core. One end of the valve core of the direct-drive solenoid valve 5 extends to the outside and is connected to the top of the lifting guide column 42. Therefore, when the air spring 2 is compressed, the lifting guide column 42 will push the armature 61 up and push the internal valve core of the direct-drive solenoid valve 5 to rise. The movement of the valve core inside the valve 5 represents that it is in the open state. At this time, because the internal volume of the airbag cavity 21 becomes smaller and the pressure becomes larger, the gas inside the airbag cavity 21 will flow from the inside of the adaptive elastic lifting member 6 and the direct-drive solenoid valve 5. The direct-drive solenoid valve 5 is connected to the inside of the additional chamber 1. At this time, the gas will flow to the inside of the additional chamber 1 until the pressure inside the airbag cavity 21 and the additional chamber 1 are not much different. The gas pressure inside the air spring 2, that is, the vehicle body stiffness, can be adaptively adjusted. After part of the gas inside the airbag cavity 21 enters the additional chamber 1, the vehicle body height adjustment of the air spring 2 is the same as before the additional chamber 1 is set. However, the stiffness of the air spring 2 is not so high at this time, and the problem of reduced comfort in the traditional technical solution will not occur. In the traditional solution, a solenoid valve is set inside the additional chamber 1 for communicating with the airbag cavity 21. The gas entering the additional chamber 1 increases the internal pressure of the additional chamber 1, and the air can be re-flowed to the inside of the airbag cavity 21 through the solenoid valve according to demand. Embodiment 2

[0026] like Figure 4-Figure 6As shown, in contrast to Example 1, another embodiment of the present invention is as follows: an air spring 2 is installed inside the vehicle body, an additional chamber 1 is installed outside the upper end of the air spring 2, an elastic dust cover 3 is provided at the lower end of the air spring 2, an airbag chamber 21 is provided inside the air spring 2, a shock absorbing damper 4 is movably installed inside the airbag chamber 21, and the additional chamber 1 includes a partition 12 fixedly installed outside the air spring 2 and a housing 11; A direct-drive solenoid valve 5 is installed inside the shell 11, and air circulation is achieved between the additional chamber 1 and the inside of the airbag chamber 21 through the direct-drive solenoid valve 5. An adaptive elastic lifting member 6 is also installed inside the shell 11, and the adaptive elastic lifting member 6 is located on one side of the direct-drive solenoid valve 5.

[0027] Specifically, during actual driving, after the vehicle body is excited by the road surface, the air spring 2 of the suspension system is subjected to external force, and the air spring 2 will be deformed and contracted as a whole. At this time, the elastic dust cover 3 contracts, reducing the internal volume of the airbag cavity 21. The volume of the airbag cavity 21 is reduced, the effective area becomes larger, the pressure becomes larger, and the rigidity of the vehicle body is higher. At this time, the vehicle body will introduce unnecessary vibration, affecting the driving comfort. The device installs an additional chamber 1 on the outer side of the upper end of the air spring 2, and the direct-drive solenoid valve 5 and the adaptive elastic valve 5 are installed inside the additional chamber 1. The jacking member 6 is a jacking structure with a spring as an elastic element, and the top of the adaptive elastic jacking member 6 is connected to the valve core inside the direct-drive solenoid valve 5. When the air spring 2 is compressed and the internal volume of the airbag cavity 21 decreases, the pressure inside the airbag cavity 21 will increase and be greater than the internal pressure of the additional chamber 1. At this time, the gas inside the airbag cavity 21 will flow into the additional chamber 1. At this time, the valve core inside the direct-drive solenoid valve 5 relies on the spring of the adaptive elastic jacking member 6 as a closed structure, so the inside of the airbag cavity 21 After the gas enters the direct-drive solenoid valve 5, it will push the valve core inside the direct-drive solenoid valve 5, making the direct-drive solenoid valve 5 in an open state. At this time, the direct-drive solenoid valve 5 is not energized, compressing the spring of the adaptive elastic lifting member 6, and then the gas inside the airbag cavity 21 first enters the direct-drive solenoid valve 5 and then enters the additional chamber 1. Affected by the road vibration, the compression degree of the air spring 2 is different. When the degree of compression of the air spring 2 is high, the greater the internal pressure of the air spring 2, the faster the valve core will be pushed, compressing the adaptive elastic lifting member 6. The higher the spring degree, that is, the additional chamber 1 can relieve the pressure for the airbag chamber 21 with a higher pressure. Conversely, the lower the pressure of the air spring 2, the less gas enters the additional chamber 1. The gas pressure inside the air spring 2, that is, the vehicle body stiffness, can be adaptively adjusted. After part of the gas inside the airbag chamber 21 enters the additional chamber 1, the vehicle body height adjustment of the air spring 2 is the same as before the additional chamber 1 is set, but the stiffness of the air spring 2 is not that high at this time, and the problem of reduced comfort in the traditional technical solution will not occur.

[0028] like Figure 6 As shown, an air pipe 1 51 is installed on the side of the direct-drive solenoid valve 5 facing the housing 11 , and an air pipe 2 52 is installed on the side of the direct-drive solenoid valve 5 facing the airbag cavity 21 . The air pipe 2 52 passes through the partition 12 and is connected to the inside of the airbag cavity 21 .

[0029] like Figure 7-Figure 8 As shown, a guide groove cavity 53 is also provided inside the direct-drive solenoid valve 5, and the guide groove cavity 53, air pipe 1 51 and air pipe 2 52 are connected. A valve core column 54 is slidably installed inside the guide groove cavity 53, and a compression spring 55 is installed on the top of the valve core column 54. The upper end of the compression spring 55 is connected to the inner top wall of the guide groove cavity 53, and a plurality of pistons 56 are fixedly installed on the outer side of the valve core column 54. The top position of the adaptive elastic lifting member 6 is inside the guide groove cavity 53, and the distance between two adjacent pistons 56 is greater than the diameter of the air pipe 1 51.

[0030] Specifically, when the air spring 2 is compressed, the volume of the airbag cavity 21 decreases, and the pressure increases, the gas inside the airbag cavity 21 will flow into the additional chamber 1, and the gas inside the airbag cavity 21 will first enter the guide groove cavity 53 through the air pipe 2 52. At this time, the horizontal height of the air pipe 1 51 is between the two pistons 56, so the entering gas will push the contacting piston 56 and then drive the valve core column 54 to move as a whole, until the gas can enter the additional chamber 1 from the air pipe 1 51. At this time, the compression spring 55 is stretched, and the adaptive elastic lifting member 6 is compressed. When the pressure in the additional chamber 1 is similar to that in the airbag chamber 21, the gas entering the guide groove chamber 53 from the airbag chamber 21 no longer has the power to push. At this time, the valve core column 54 and the piston 56, through the restoring force of the compression spring 55 and the spring of the adaptive elastic lifting member 6, keep the horizontal height of the air pipe 51 between the two pistons 56. At this time, the gas inside the airbag chamber 21 cannot enter the air pipe 51 from the guide groove chamber 53. The piston 56 at the bottom of the valve core column 54 is used to prevent the internal gas of the guide groove chamber 53 from leaking.

[0031] like Figure 8-Figure 9 As shown, the adaptive elastic lifting member 6 includes a base 64 fixedly mounted on the inner wall of the outer shell 11 and a pin 63 movably mounted inside the base 64. A three-stage spring 62 is also installed above the base 64. An armature 61 is installed on the upper end of the pin 63. The top of the three-stage spring 62 is connected to the bottom of the armature 61. The base 64 is magnetically connected to the armature 61 after being energized. The armature 61 is magnetically connected to the valve core column 54 after being energized.

[0032] The base 64 is provided with a component slot 1 641 , a component slot 2 642 and an electrical structure slot 643 in sequence from top to bottom. An electromagnetism structure is installed inside the electrical structure slot 643 .

[0033] Specifically, when the base 64 is not energized, the three-stage spring 62 is in a natural state. At this time, the three-stage spring 62 will lift the armature 61, so that the armature 61 is inside the guide groove cavity 53 and provides support for the valve core column 54. When the gas pushes the valve core column 54 to move toward the additional chamber 1, the three-stage spring 62 is compressed. The greater the internal pressure of the inner chamber 21, the greater the speed and displacement of the valve core column 54. As a result, the tighter the three-stage spring 62 is compressed, the more gas enters the additional chamber 1, which plays an adaptive adjustment effect. The ejector pin 63 falls with the compression of the three-stage spring 62. When the ejector pin 63 is passed When energized, the armature 61 will be attracted magnetically, and after the two are attracted, the adaptive elastic lifting member 6 as a whole generates a repulsive force relative to one end of the valve core column 54, thereby keeping the valve core column 54 in a fixed state. At this time, the horizontal height of the air pipe 51 is between the two pistons 56, that is, the direct-drive solenoid valve 5 is in a closed state. When the armature 61 and the ejector pin 63 are both energized, the two can be in a magnetic attraction state, but at this time the armature 61 and the end of the valve core column 54 are in an attractive state, that is, the valve core column 54 will be driven to descend. At this time, the internal gas of the additional chamber 1 and the air spring 2 can communicate with the air pipe 51 through the guide groove cavity 53. Embodiment 3

[0034] like Figure 9-10 As shown, compared with Example 1, another implementation of the present invention is: component groove 1 641 is preferably a groove with a top diameter larger than the bottom diameter, component groove 2 642 is preferably a groove with top and bottom diameters larger than the middle diameter, an adapter round block 65 is installed on the bottom outer side of the ejector pin 63, and the adapter round block 65 matches the component groove 1 641, and a plurality of U-shaped arc blocks 66 are installed on the outer side of the lower end of the ejector pin 63 through a spring guide column, and the whole formed by the plurality of U-shaped arc blocks 66 matches the component groove 2 642.

[0035] Specifically, when the three-stage spring 62 is in the limit compression, that is, the base 64 is energized and magnetically attracted to the armature 61, the adapter round block 65 is in the component slot 1 641, and the multiple U-shaped arc blocks 66 are in the component slot 2 642. The adapter round block 65 can only rise but not fall in the component slot 1 641 to prevent the lifting pin 63 from damaging the internal electronic structure of the electrical structure slot 643 when it rises and falls. When the multiple U-shaped arc blocks 66 are in the component slot 2 642, the U-shaped arc block 66 and the spring guide column at the lower end of the ejector pin 63 will be in the compression state. The U-shaped arc block 66 is in a compressed state, and the friction between the inner wall of the component groove 642 is increased, which, together with the magnetic force of the base 64, counteracts the restoring force of the three-stage spring 62, which helps to extend the service life of the adaptive elastic lifting member 6 as a whole. When the base 64 is no longer energized, the three-stage spring 62 is changed from a compressed state to a restored state, which will lift the armature 61 and the ejector pin 63. At this time, the inside of the U-shaped arc block 66 can rise to the inside of the component groove 641 under the action of the spring guide column, and will not affect the normal use of the adaptive elastic lifting member 6.

[0036] Working principle: During real-life driving, when the vehicle body is excited by the road surface, the air spring 2 of the suspension system will be deformed and contracted as a whole under the action of external force. At this time, the elastic dust cover 3 contracts, reducing the internal volume of the airbag cavity 21. The volume of the airbag cavity 21 is reduced, the effective area becomes larger, the pressure becomes larger, and the rigidity of the vehicle body is higher. At this time, the vehicle body will introduce unnecessary vibrations, affecting the driving comfort. The device installs an additional chamber 1 on the outer side of the upper end of the air spring 2, and a direct-drive solenoid valve 5 and an adaptive elastic valve are installed inside the additional chamber 1. The jacking member 6 is a jacking structure with a spring as an elastic element, and the top of the adaptive elastic jacking member 6 is connected to the valve core inside the direct-drive solenoid valve 5. When the air spring 2 is compressed and the internal volume of the airbag cavity 21 decreases, the pressure inside the airbag cavity 21 will increase and be greater than the internal pressure of the additional chamber 1. At this time, the gas inside the airbag cavity 21 will flow into the additional chamber 1. At this time, the valve core inside the direct-drive solenoid valve 5 relies on the spring of the adaptive elastic jacking member 6 as a closed structure, so the inside of the airbag cavity 21 After the gas enters the direct-drive solenoid valve 5, it will push the valve core inside the direct-drive solenoid valve 5, making the direct-drive solenoid valve 5 in an open state. At this time, the direct-drive solenoid valve 5 is not energized, compressing the spring of the adaptive elastic lifting member 6, and then the gas inside the airbag cavity 21 first enters the direct-drive solenoid valve 5 and then enters the additional chamber 1. Affected by the road vibration, the compression degree of the air spring 2 is different. When the degree of compression of the air spring 2 is high, the greater the internal pressure of the air spring 2, the faster the valve core will be pushed, compressing the adaptive elastic lifting member 6. The higher the spring degree, that is, the additional chamber 1 can relieve the pressure for the airbag chamber 21 with a higher pressure. Conversely, the lower the pressure of the air spring 2, the less gas enters the additional chamber 1. The gas pressure inside the air spring 2, that is, the vehicle body stiffness, can be adaptively adjusted. After part of the gas inside the airbag chamber 21 enters the additional chamber 1, the vehicle body height adjustment of the air spring 2 is the same as before the additional chamber 1 is set, but the stiffness of the air spring 2 is not that high at this time, and the problem of reduced comfort in the traditional technical solution will not occur.

[0037] When the air spring 2 is compressed, the volume of the airbag cavity 21 becomes smaller, and the pressure increases, the gas inside the airbag cavity 21 will flow into the additional chamber 1, and the gas inside the airbag cavity 21 will first enter the guide groove cavity 53 through the air pipe 2 52. At this time, the horizontal height of the air pipe 1 51 is between the two pistons 56, so the entering gas will push the contacting piston 56 and then drive the valve core column 54 to move as a whole, until the gas can enter the additional chamber 1 from the air pipe 1 51. At this time, the compression spring 55 is stretched, and the adaptive elastic lifting member 6 is The spring is compressed. When the pressure in the additional chamber 1 is almost the same as that in the airbag chamber 21, the gas entering the guide groove chamber 53 from the airbag chamber 21 no longer has the power to push. At this time, the valve core column 54 and the piston 56, through the restoring force of the compression spring 55 and the spring of the adaptive elastic lifting member 6, keep the horizontal height of the air pipe 51 between the two pistons 56. At this time, the gas inside the airbag chamber 21 cannot enter the air pipe 51 from the guide groove chamber 53. The piston 56 at the bottom of the valve core column 54 is used to prevent the internal gas of the guide groove chamber 53 from leaking.

[0038] The above shows and describes the basic principles, main features and advantages of the present invention. It should be understood by those skilled in the art that the present invention is not limited to the above embodiments. The above embodiments and descriptions are only for explaining the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention may have various changes and improvements, which fall within the scope of the present invention. The scope of protection of the present invention is defined by the attached claims and their equivalents.

Claims

1. An adaptive structure of a suspension system, characterized in that: The invention comprises an adaptive elastic lifting member (6), wherein the suspension system comprises an air spring (2), wherein the air spring (2) is installed inside a vehicle body, an additional chamber (1) is provided outside the air spring (2), and the additional chamber (1) is installed outside the upper end of the air spring (2), an elastic dust cover (3) is provided at the lower end of the air spring (2), an air bag chamber (21) is provided inside the air spring (2), and a shock absorbing damper (4) is movably installed inside the air bag chamber (21); A direct-drive solenoid valve (5) is installed inside the air spring (2), and the airbag chamber (21) and the additional chamber (1) are connected via the direct-drive solenoid valve (5); The adaptive elastic lifting member (6) comprises a base (64) and a pin (63) movably mounted inside the base (64); a three-stage spring (62) is mounted above the base (64); and an armature (61) is mounted at the upper end of the pin (63).

2. The adaptive structure of a suspension system according to claim 1, characterized in that: The shock-absorbing damper (4) comprises a damper shell (41) installed inside the airbag cavity (21), a lifting guide column (42) is slidably installed inside the damper shell (41), a shock-absorbing spring (43) is installed inside the damper shell (41), the upper end of the damper shell (41) is connected to the inner top of the air spring (2), and the upper end of the lifting guide column (42) is connected to the bottom of the adaptive elastic lifting member (6).

3. The adaptive structure of a suspension system according to claim 1, characterized in that: The base (64) is fixedly mounted on the inner wall of the housing (11), and the top end of the three-stage spring (62) is connected to the bottom end of the armature (61).

4. The adaptive structure of a suspension system according to claim 1, characterized in that: The direct-drive solenoid valve (5) is further provided with a guide groove cavity (53) inside, the guide groove cavity (53), the air pipe 1 (51) and the air pipe 2 (52) are connected, a valve core column (54) is slidably mounted inside the guide groove cavity (53), a compression spring (55) is mounted on the top of the valve core column (54), the upper end of the compression spring (55) is connected to the inner top wall of the guide groove cavity (53), and a plurality of pistons (56) are fixedly mounted on the outer side of the valve core column (54).

5. The adaptive structure of a suspension system according to claim 4, characterized in that: The top of the adaptive elastic lifting member (6) is located inside the guide groove cavity (53), and the distance between two adjacent pistons (56) is greater than the diameter of the air pipe (51).

6. The adaptive structure of a suspension system according to claim 5, characterized in that: The additional chamber (1) comprises a partition (12) fixedly mounted on the outside of the air spring (2) and a housing (11); a first air pipe (51) is mounted on the side of the direct-drive solenoid valve (5) facing the housing (11); a second air pipe (52) is mounted on the side of the direct-drive solenoid valve (5) facing the airbag chamber (21); the second air pipe (52) passes through the partition (12) and is connected to the inside of the airbag chamber (21); and the adaptive elastic lifting member (6) is located on one side of the direct-drive solenoid valve (5).

7. The adaptive structure of a suspension system according to claim 3, characterized in that: The base (64) is magnetically connected to the armature (61) when energized, and the armature (61) is magnetically connected to the valve core column (54) when energized.

8. The adaptive structure of a suspension system according to claim 7, characterized in that: The base (64) is provided with a component groove 1 (641), a component groove 2 (642) and an electrical structure groove (643) in sequence from top to bottom, and an electromagnetism structure is installed in the electrical structure groove (643).

9. The adaptive structure of a suspension system according to claim 8, characterized in that: The component groove 1 (641) is preferably a groove with a top diameter larger than a bottom diameter, and the component groove 2 (642) is preferably a groove with a top and bottom diameter larger than a middle diameter.

10. The adaptive structure of a suspension system according to claim 9, characterized in that: An adapting round block (65) is installed on the outer side of the bottom of the ejector pin (63), and the adapting round block (65) matches the first component groove (641). A plurality of U-shaped arc blocks (66) are installed on the outer side of the lower end of the ejector pin (63) via spring guide columns, and the whole formed by the plurality of U-shaped arc blocks (66) matches the second component groove (642).

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