A bionic double-tube double-cavity double-valve type air spring assembly structure

Abstract

The application discloses a bionic double-tube double-cavity double-valve type air spring assembly structure, which comprises an air spring and a valve type damper, wherein the air spring is composed of an air bag, an additional air chamber, a piston and a valve, and the damper is composed of a piston rod, an inner built-in electromagnetic valve, an intermediate valve, an outer built-in electromagnetic valve and a bottom valve; the air bag is connected with the additional air chamber; the additional air chamber is connected with the air bag through two throttle pipes; the piston is provided with an auxiliary air chamber; the valve is a bionic structure and is located on the top of the piston; the piston rod connects the air spring with the damper; the bottom cavity of the inner built-in electromagnetic valve is in a bowl shape; the intermediate valve is composed of two opposite direction one-way valves; the outer built-in electromagnetic valve is communicated with an outer cavity and an intermediate cavity of the damper; and the bottom valve is composed of two opposite direction one-way valves. The application is beneficial to essentially eliminating the resonance in the air spring, and realizes the self-adaptive adjusting ability of the air spring damping and a wider variable range of the damper damping.

Description

Technical Field

[0001] This invention belongs to the field of vibration damper technology, and specifically relates to a biomimetic double-tube, double-cavity, double-valve air spring assembly structure. Background Technology

[0002] With the continuous advancement of modern transportation technology, the damping performance and ride comfort of vehicle suspension systems have become important indicators for evaluating vehicle performance. Air spring assemblies, as a new type of vibration damping structure, have been widely used in vehicle suspension systems and mechanical vibration damping due to their excellent cushioning performance and adjustability. However, traditional air spring assemblies have certain limitations. Common air spring assemblies suffer from large internal resonance, limited damping adjustment capability, high stiffness, and narrow damping adjustment range under complex road conditions, thus restricting further improvements in air spring performance and the expansion of its application scope. Summary of the Invention

[0003] The purpose of this invention is to overcome the shortcomings of the prior art and provide a biomimetic dual-tube, dual-chamber, dual-valve air spring assembly structure. By adding an auxiliary air chamber connected to the air bladder in the air spring assembly, the auxiliary air chamber is connected to the air bladder through a compression throttle tube and a tension throttle tube. An auxiliary air chamber with a valve structure is opened in the piston. Internal and external solenoid valves are used in the valve-type shock absorber. This essentially eliminates the internal resonance of the air spring, reduces the stiffness of the air spring, and realizes the adaptive adjustment capability of the air spring damping and a wider variable range of shock absorber damping, thereby further improving the performance of the air spring and further expanding its application range.

[0004] To achieve the above objectives, the technical solution adopted by the present invention is as follows:

[0005] A biomimetic dual-tube, dual-chamber, dual-valve air spring assembly structure includes an air spring and a valve-type shock absorber. The air spring includes an air bladder, an auxiliary air chamber, a piston, and a valve. The valve-type shock absorber includes a piston rod, a built-in solenoid valve, an intermediate valve, an external solenoid valve, and a bottom valve. The air bladder is connected to the auxiliary air chamber, which is connected to the air bladder via a compression throttling tube and a tension throttling tube. The piston has an auxiliary air chamber. The valve is a biomimetic structure located at the top of the piston. The piston rod connects the air spring and the valve-type shock absorber. The bottom cavity of the built-in solenoid valve has a bowl-shaped structure. The intermediate valve consists of two one-way valves in opposite directions. The external solenoid valve is connected to the outer cavity and the intermediate cavity of the valve-type shock absorber. The bottom valve consists of two one-way valves in opposite directions.

[0006] The air spring also includes a limiting block located at the top of the airbag. The valve-type shock absorber also includes an upper cavity, a lower cavity, a bottom cavity, an intermediate cavity, and an outer cavity. The upper cavity is located at the top of the built-in solenoid valve. The lower cavity is located between the bottom of the built-in solenoid valve and the top of the bottom valve. The bottom cavity is located at the bottom of the bottom valve. The intermediate cavity communicates with the upper cavity and the external solenoid valve. The outer cavity is the outermost chamber of the valve-type shock absorber and is connected to the external solenoid valve and the bottom cavity.

[0007] Preferably, a compression check valve is installed in the compression throttling pipe.

[0008] Preferably, a tension check valve is installed in the tension throttling tube.

[0009] Preferably, the piston is made of nylon material, and the piston and the airbag are connected by spot welding. The piston has an auxiliary air chamber at the top, and the opening of the auxiliary air chamber is a valve.

[0010] Preferably, the piston rod connects the air spring and the valve-type shock absorber via a connection to the piston and a built-in solenoid valve.

[0011] Preferably, the built-in solenoid valve includes a built-in valve spring, an electromagnet, a housing, an outlet channel, a bottom cavity, and a built-in solenoid valve core. The built-in valve spring is wound around the outside of the built-in solenoid valve core, the electromagnet is located outside the built-in solenoid valve core, the outlet channel is opened in the middle of the housing, and the bottom cavity is opened at the bottom of the housing.

[0012] Preferably, the intermediate valve is located at the bottom of the built-in solenoid valve, and the intermediate valve has a tension channel, a tension valve, a compression channel, and a compression valve.

[0013] Preferably, the external solenoid valve includes a pilot valve and a relief valve. The pilot valve includes a valve cover, a pilot valve core, an armature, a magnetic isolation ring, a pilot valve seat, a pilot valve spring seat, a pilot valve limiting block, and a magnet. The valve cover is located at the top of the external solenoid valve, with its inner side in contact with the magnet and its bottom connected to the pilot valve seat. The pilot valve core has a pilot valve limiting block at its top, an armature arranged on its outer side, and a pilot valve spring seat at its bottom. The magnetic isolation ring is located at the bottom of the magnet and on the outer side of the armature. The pilot valve seat and valve cover are connected together. Similar to the pilot valve, the magnet is located outside the armature. The relief valve includes a relief valve plate, a relief valve seat, a rivet, a relief valve spring seat, a relief valve housing, and an external valve spring. The relief valve plate is located on top of the rivet. The relief valve seat is connected to the intermediate cavity. The rivet is wrapped inside the relief valve seat. The rivet is in direct contact with the intermediate cavity. The relief valve spring seat is placed at the bottom of the external valve spring. The external valve spring and the relief valve spring seat are wrapped inside the relief valve housing. The external valve spring is located between the relief valve spring seat and the pilot valve spring seat.

[0014] The beneficial effects of this invention are:

[0015] 1) By adding additional and auxiliary air chambers, gas can flow between the airbag and the additional and auxiliary air chambers. The additional and auxiliary air chambers can act as buffers for gas flow. This adjustment mechanism helps to absorb and reduce vibration, thereby reducing the overall stiffness of the air spring.

[0016] 2) The auxiliary air chamber is connected to the air bladder by compression throttling tube and extension throttling tube. This unidirectional flow tube structure helps to improve the uniformity of gas flow, reduce the impact caused by sudden changes in gas flow state, and eliminate internal resonance caused by uneven gas flow.

[0017] 3) By opening a valve at the top of the piston, the valve is used as the inlet and outlet of the auxiliary air chamber to achieve passive adaptive damping adjustment of the air spring.

[0018] 4) Through the synergistic action of the built-in solenoid valve and the external solenoid valve in the valve-type shock absorber, precise control of oil flow and dynamic adjustment of damping force can be achieved. The built-in solenoid valve and the external solenoid valve are responsible for regulating the replenishment and discharge of oil. This design allows the valve-type shock absorber to flexibly adjust the damping characteristics according to actual needs, thereby expanding the range of damping adjustment. Attached Figure Description

[0019] Appendix Figure 1 This is a cross-sectional view of a biomimetic double-tube, double-cavity, double-valve air spring assembly according to the present invention.

[0020] Appendix Figure 2 This is a schematic diagram of the valve structure in a biomimetic dual-tube, dual-cavity, dual-valve air spring assembly of the present invention.

[0021] Appendix Figure 3 This is a schematic diagram of the built-in solenoid valve structure in a biomimetic double-tube double-cavity double-valve air spring assembly of the present invention.

[0022] Appendix Figure 4 This is a schematic diagram of the external solenoid valve structure in a biomimetic dual-tube, dual-cavity, dual-valve air spring assembly of the present invention.

[0023] Appendix Figure 5 This is a schematic diagram of the air spring structure in a biomimetic double-tube, double-cavity, double-valve air spring assembly of the present invention.

[0024] Appendix Figure 6 This is a schematic diagram of the valve-type vibration damping air structure in a biomimetic double-tube double-cavity double-valve air spring assembly of the present invention.

[0025] In the diagram: 1. Air spring; 2. Airbag; 3. Limiting block; 4. Piston; 5. Valve; 6. Valve-type shock absorber; 7. Piston rod; 8. Built-in solenoid valve; 801. Built-in valve spring; 802. Electromagnet; 803. Outer shell; 804. Outlet channel; 805. Bottom cavity; 806. Built-in solenoid valve core; 9. Upper cavity; 10. Intermediate valve; 1001. Tension channel; 1002. Tension valve; 1003. Compression channel; 1004. Compression valve; 11. Intermediate cavity; 12. Outer cavity; 13. Bottom valve; 14. Bottom cavity; 15. External solenoid valve; 1501. Valve 1502. Cap; 1503. Pilot valve core; 1504. Armature; 1505. Magnetic shielding ring; 1506. Pilot valve seat; 1507. Pilot valve spring seat; 1508. Relief valve plate; 1509. Relief valve seat; 1510. Rivet; 1511. Relief valve housing; 1512. External valve spring; 1513. Pilot valve limit block; 1514. Magnet; 16. Lower chamber; 17. Auxiliary air chamber; 18. Additional air chamber; 1801. Tension throttle tube; 1802. Tension check valve; 1803. Compression throttle tube; 1804. Compression check valve. Detailed Implementation Plan

[0026] The following is in conjunction with the appendix Figures 1-6 The technical solutions in the embodiments of the present invention are clearly and completely described herein. Obviously, the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present invention.

[0027] In the description of this invention, it should be understood that the terms "longitudinal", "lateral", "up", "down", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this invention, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this invention.

[0028] A biomimetic dual-tube, dual-chamber, dual-valve air spring assembly structure includes an air spring 1 and a valve-type shock absorber 6. The air spring 1 includes an air bladder 2, an auxiliary air chamber 18, a piston 4, and a valve 5. The valve-type shock absorber 6 includes a piston rod 7, an internal solenoid valve 8, an intermediate valve 10, an external solenoid valve 15, and a bottom valve 13. The air bladder 2 is connected to the auxiliary air chamber 18, which is connected to the air bladder 2 through a compression throttle tube 1803 and a tension throttle tube 1801. The piston 4 has an auxiliary air chamber 17. The valve 5 is a biomimetic structure located at the top of the piston 4. The piston rod 7 connects the air spring 1 and the valve-type shock absorber 6. The bottom cavity 805 of the internal solenoid valve 8 has a bowl-shaped structure. The intermediate valve 10 consists of two one-way valves in opposite directions. The external solenoid valve 15 is connected to the outer cavity 12 and the intermediate cavity 11 of the valve-type shock absorber 6. The bottom valve 13 consists of two one-way valves in opposite directions.

[0029] The air spring 1 also includes a limiting block 3, which is located at the top of the airbag 2. The valve-type shock absorber 6 also includes an upper cavity 9, a lower cavity 16, a bottom cavity 14, an intermediate cavity 11, and an outer cavity 12. The upper cavity 9 is located at the top of the built-in solenoid valve 8. The lower cavity 16 is located between the bottom of the built-in solenoid valve 8 and the top of the bottom valve 13. The bottom cavity 14 is located at the bottom of the bottom valve 13. The intermediate cavity 11 communicates with the upper cavity 9 and the external solenoid valve 15. The outer cavity 12 is the outermost chamber of the valve-type shock absorber 15 and is connected to the external solenoid valve 15 and the bottom cavity 14.

[0030] A compression check valve 1804 is installed in the compression throttling tube 1803, and a tension check valve 1802 is installed in the tension throttling tube 1801. The piston 4 is made of nylon material and is connected to the air bladder 2 by spot welding. An auxiliary air chamber 17 is provided at the top of the piston 4, and the opening of the auxiliary air chamber 17 is a valve 5. The piston rod 7 is connected to the air spring 1 and the valve-type shock absorber 6 by connecting to the piston 4 and the built-in solenoid valve 8. The intermediate valve 10 is located at the bottom of the built-in solenoid valve 8. The intermediate valve 10 is provided with a tension channel 1001, a tension valve 1002, a compression channel 1003, and a compression valve 1004. The bottom valve 13 is located between the lower chamber 16 and the bottom chamber 14.

[0031] The built-in solenoid valve 8 includes a built-in valve spring 801, an electromagnet 802, a housing 803, an outlet channel 804, a bottom cavity 805, and a built-in solenoid valve core 806. The built-in valve spring 801 is wound around the outside of the built-in solenoid valve core 806, and the electromagnet 802 is located outside the built-in solenoid valve core 806. The outlet channel 804 is opened in the middle of the housing 803, and the bottom cavity 805 is opened at the bottom of the housing 803. The external solenoid valve includes a pilot valve and a relief valve. The pilot valve includes... The system comprises a valve cover 1501, a pilot valve core 1502, an armature 1503, a magnetic isolation ring 1504, a pilot valve seat 1505, a pilot valve spring seat 1506, a pilot valve limiting block 1513, and a magnet 1514. The valve cover 1501 is located on top of the external solenoid valve 15, with the inner side of the valve cover 1501 in contact with the magnet 1514. The bottom of the valve cover 1501 is connected to the pilot valve seat 1505. The pilot valve core 1502 has a pilot valve limiting block 1513 on its top, and an armature 1504 is arranged on the outer side of the pilot valve core 1502. 3. A pilot valve spring seat 1506 is provided at the bottom of the pilot valve core 1502. The magnetic isolation ring 1504 is located at the bottom of the magnet 1514 and outside the armature 1503. The pilot valve seat 1505 and the valve cover 1501 jointly seal the pilot valve. The magnet 1514 is located outside the armature 1503. The relief valve includes a relief valve plate 1507, a relief valve seat 1508, a rivet 1509, a relief valve spring seat 1510, a relief valve housing 1511, and an external valve spring 1512. The relief valve plate 1507... 07 is located at the top of rivet 1509. The overflow valve seat 1508 is connected to the intermediate cavity 11. The overflow valve seat 1508 is wrapped with rivet 1509. The rivet 1509 is in direct contact with the intermediate cavity 11. The overflow valve spring seat 1510 is placed at the bottom of the external valve spring 1512. The overflow valve housing 1511 is wrapped with the external valve spring 1512 and the overflow valve spring seat 1510. The external valve spring 1512 is located between the overflow valve spring seat 1510 and the pilot valve spring seat 1506.

[0032] The addition of the auxiliary air chamber 18 and the supplementary air chamber 17 allows gas to flow between the airbag 2 and the auxiliary air chamber 18. The auxiliary air chamber 18 and the supplementary air chamber 17 act as buffers for gas flow. This adjustment mechanism helps absorb and reduce vibration, thereby reducing the overall stiffness of the air spring. The compression throttle tube 1803 and the tension throttle tube 1801 connect the auxiliary air chamber 18 to the airbag 2. This unidirectional flow tube structure of the compression throttle tube 1803 and the tension throttle tube 1801 helps improve the uniformity of gas flow and reduce abrupt changes in gas flow state. To mitigate the impact of airflow and eliminate internal resonance caused by uneven gas flow, a valve 5 is provided on the top of the piston 4. The valve 5 serves as the inlet and outlet of the auxiliary air chamber 17, enabling passive adaptive damping adjustment of the air spring 1. The synergistic effect of the built-in solenoid valve 8 and the external solenoid valve 15 in the valve-type shock absorber 6 allows for precise control of oil flow and dynamic adjustment of damping force. The built-in solenoid valve 8 and the external solenoid valve 15 are responsible for regulating the replenishment and discharge of oil. This design allows the valve-type shock absorber to flexibly adjust its damping characteristics according to actual needs, thereby expanding the range of damping adjustment.

[0033] A biomimetic dual-tube, dual-cavity, dual-valve air spring assembly structure, the working process of which is as follows:

[0034] When the biomimetic dual-tube, dual-chamber, dual-valve air spring assembly is in a stretched state, the piston rod 7 of the valve-type shock absorber 6 moves upward, causing the air bladder 2 of the air spring 1 to be compressed, resulting in a reduction in the internal volume of the air bladder 2. As the air bladder 2 is compressed, the gas inside the air bladder 2 flows into the auxiliary air chamber 17 through the valve 5 at the top of the piston 4. At the same time, the gas inside the air bladder 2 flows into the additional air chamber 18 through the compression throttle tube 1803 and the compression check valve 1804. The maximum stretching distance is reached after the piston 4 moves to contact the limit block 3. During the stretching process, the built-in solenoid valve 8 of the valve-type shock absorber 6 moves to the upper chamber 9 along with the piston rod 7. This causes the volume of the upper cavity 9 to decrease and the volume of the lower cavity 16 to increase. The hydraulic oil inside the upper cavity 9 will flow towards the middle cavity 10 and flow towards the lower cavity 16 through the stretching channel 1001 and the stretching valve 1002. The oil in the middle cavity 11 flows to the outer cavity 12 through the external solenoid valve 15. The oil in the outer cavity 12 and the bottom cavity 14 flows into the lower cavity 16 through the bottom valve 13. During the stretching process, the built-in solenoid valve 8 controls the oil flow. The oil in the upper cavity 9 opens the built-in solenoid valve core 806 controlled by electromagnetic force through the outflow channel 804 of the built-in solenoid valve 8, and then enters the lower cavity 16 through the bottom cavity 805.

[0035] When the biomimetic dual-tube, dual-chamber, dual-valve air spring assembly is in a compressed state, the piston rod 7 of the valve damper 6 moves downward, causing the air bladder 2 of the air spring 1 to be stretched. As the volume of the air bladder 2 increases, the gas in the auxiliary air chamber 17 flows into the air bladder 2 through the valve 5 at the top of the piston 4. At the same time, the gas in the auxiliary air chamber 18 flows into the air bladder 2 through the stretching throttle tube 1801 and the stretching one-way valve 1802. The distance between the piston 4 and the limiting block 3 gradually increases. During the compression process, the built-in solenoid valve 8 of the valve damper 6 moves to the lower chamber 16 with the piston rod 7, and the hydraulic oil in the upper chamber 9... The oil flows towards the intermediate cavity 10. The oil in the intermediate cavity 11 flows to the outer cavity 12 through the external solenoid valve 15. The oil inside the lower cavity 16 flows towards the upper cavity 9 through the compression channel 1003 and the compression valve 1004. The oil inside the lower cavity 16 also flows to the bottom cavity 14 through the bottom valve 13. The oil in the bottom cavity 14 flows to the outer cavity 12. During the compression process, the built-in solenoid valve 8 controls the oil flow. The oil in the lower cavity 16 opens the built-in solenoid valve core 806 controlled by electromagnetic force through the bottom cavity 805 of the built-in solenoid valve 8, and then enters the upper cavity 9 through the outflow channel 804.

[0036] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A biomimetic dual-tube, dual-chamber, dual-valve air spring assembly structure, comprising an air spring and a valve-type shock absorber, wherein the air spring includes an air bladder, an auxiliary air chamber, a piston, and a diaphragm, and the valve-type shock absorber includes a piston rod, a built-in solenoid valve, an intermediate valve, an external solenoid valve, and a bottom valve, characterized in that, The airbag is connected to the auxiliary air chamber, which is connected to the airbag through a compression throttle tube and a tension throttle tube. The piston has an auxiliary air chamber. The valve is a biomimetic structure located at the top of the piston. The piston rod is connected to the air spring and the valve-type shock absorber. The bottom cavity of the built-in solenoid valve has a bowl-shaped structure. The intermediate valve consists of two one-way valves in opposite directions. The external solenoid valve is connected to the outer cavity and the intermediate cavity of the valve-type shock absorber. The bottom valve consists of two one-way valves in opposite directions. The air spring also includes a limiting block located at the top of the airbag. The valve-type shock absorber also includes an upper cavity, a lower cavity, a bottom cavity, an intermediate cavity, and an outer cavity. The upper cavity is located at the top of the built-in solenoid valve. The lower cavity is located between the bottom of the built-in solenoid valve and the top of the bottom valve. The bottom cavity is located at the bottom of the bottom valve. The intermediate cavity communicates with the upper cavity and the external solenoid valve. The outer cavity is the outermost chamber of the valve-type shock absorber and is connected to the external solenoid valve and the bottom cavity.

2. The biomimetic double-tube, double-cavity, double-valve air spring assembly structure according to claim 1, characterized in that, A compression check valve is installed in the compression throttling pipe.

3. The biomimetic dual-tube, dual-cavity, dual-valve air spring assembly structure according to claim 1, characterized in that, A tension check valve is installed in the tension throttling tube.

4. The biomimetic dual-tube, dual-cavity, dual-valve air spring assembly structure according to claim 1, characterized in that, The piston is made of nylon material and is connected to the airbag by spot welding. The piston has an auxiliary air chamber at the top, and the opening of the auxiliary air chamber is a valve.

5. The biomimetic double-tube, double-cavity, double-valve air spring assembly structure according to claim 1, characterized in that, The piston rod connects the air spring and the valve-type shock absorber via a connection to the piston and a built-in solenoid valve.

6. The biomimetic double-tube, double-cavity, double-valve air spring assembly structure according to claim 1, characterized in that, The built-in solenoid valve includes a built-in valve spring, an electromagnet, a housing, an outlet channel, a bottom cavity, and a built-in solenoid valve core. The built-in valve spring is wound around the outside of the built-in solenoid valve core, and the electromagnet is located outside the built-in solenoid valve core. An outlet channel is opened in the middle of the housing, and a bottom cavity is opened at the bottom of the housing.

7. The biomimetic double-tube, double-cavity, double-valve air spring assembly structure according to claim 1, characterized in that, The intermediate valve is located at the bottom of the built-in solenoid valve, and the intermediate valve has a tension channel, a tension valve, a compression channel, and a compression valve.

8. The biomimetic double-tube, double-cavity, double-valve air spring assembly structure according to claim 1, characterized in that, The external solenoid valve includes a pilot valve and a relief valve. The pilot valve includes a valve cover, a pilot valve core, an armature, a magnetic isolation ring, a pilot valve seat, a pilot valve spring seat, a pilot valve limiting block, and a magnet. The valve cover is located on top of the external solenoid valve, with its inner side in contact with the magnet. The bottom of the valve cover is connected to the pilot valve seat. The pilot valve core has a pilot valve limiting block at its top, an armature arranged on its outer side, and a pilot valve spring seat at its bottom. The magnetic isolation ring is located at the bottom of the magnet and on the outer side of the armature. The pilot valve seat and the valve cover are sealed together. The pilot valve is sealed, the magnet is located outside the armature, and the relief valve includes a relief valve plate, a relief valve seat, a rivet, a relief valve spring seat, a relief valve housing, and an external valve spring. The relief valve plate is located on top of the rivet, the relief valve seat is connected to the intermediate cavity, the rivet is wrapped inside the relief valve seat, the rivet is in direct contact with the intermediate cavity, the relief valve spring seat is placed at the bottom of the external valve spring, the external valve spring and the relief valve spring seat are wrapped inside the relief valve housing, and the external valve spring is located between the relief valve spring seat and the pilot valve spring seat.

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