An air suspension control system having a self-sealing joint

Abstract

The application discloses an air suspension control system with a self-sealing joint, relates to the technical field of air suspension, and can be connected with an external load, inflate the external load and improve the utilization rate of the air pump by additionally arranging the quick plug structure of the self-sealing joint. The air suspension control system comprises a gas supply valve body unit, an air silencing, filtering and drying device, a gas storage tank and a plurality of air springs. The gas supply valve body unit comprises a self-sealing joint and a manual exhaust bolt, and is provided with a first air inlet port, a second air inlet port, a third air inlet port, a fourth air inlet port and a plurality of fifth air inlet ports. The manual exhaust bolt is in communication with the first air inlet port, and the self-sealing joint is in communication with the second air inlet port. The air silencing, filtering and drying device is provided with an air inlet and exhaust nozzle and an air inlet and exhaust hole at two ends, respectively. The air inlet and exhaust nozzle is in communication with the third air inlet port, the gas storage tank is in communication with the fourth air inlet port, and the plurality of air springs are connected with the plurality of fifth air inlet ports in one-to-one correspondence.

Description

Technical Field

[0001] This application relates to the field of air suspension technology, and more specifically, to an air suspension control system with a self-sealing joint. Background Technology

[0002] The automotive suspension system is a crucial component of a car. Its primary function is to transmit forces and torques between the wheels and the chassis, buffer impacts from uneven road surfaces, and dampen vibrations to ensure a smooth ride and improve vehicle stability and comfort. With the continuous development of automotive integration and intelligence, and the increasing richness of vehicle functions, automotive suspension products are constantly being updated and iterated to meet the demand for a more comfortable driving experience. This has gradually led to the development of height-adjustable air suspension systems. These systems can adjust the vehicle height according to driving conditions, greatly improving ride comfort and off-road capability in complex road conditions. The core component of an air suspension is the air supply unit, which provides compressed air to the air suspension. Currently, air supply units have evolved from separate units to integrated designs. However, existing air suspension control systems cannot inflate external loads and lack noise reduction structures, resulting in significant noise during intake and exhaust. Furthermore, the dryer is located inside the air supply unit's air path, at the rear end of the air pump. When air is drawn in, the humid air cannot be dried before entering the air supply unit's valve body, posing a risk of water accumulation in the air pump and reversing valve, leading to failure. Additionally, the numerous external pipelines make the system difficult to install. Utility Model Content

[0003] This application provides an air suspension control system with a self-sealing joint to solve at least one of the problems in the prior art.

[0004] The specific technical solution is as follows:

[0005] In a first aspect, embodiments of this application provide an air suspension control system with a self-sealing joint. The air suspension control system includes: an air supply valve body unit, an air silencer filter dryer, an air tank, and multiple air springs. The air supply valve body unit includes a self-sealing joint and a manual venting bolt. The air supply valve body unit is provided with a first vent port, a second vent port, a third vent port, a fourth vent port, and multiple fifth vent ports. The manual venting bolt is connected to the first vent port, and the self-sealing joint is connected to the second vent port. The two ends of the air silencer filter dryer are respectively provided with an air inlet / outlet nozzle and an air inlet / outlet hole. The air inlet / outlet nozzle is connected to the third vent port, and the air tank is connected to the fourth vent port. The multiple air springs are connected to the multiple fifth vent ports one by one.

[0006] When the air suspension control system is in the air tank replenishment state, the third and fourth air ports are opened by switching the internal valve of the air supply valve body unit, while the first, second, and multiple fifth air ports are closed. External air is drawn in through the air inlet and outlet ports of the air silencer filter dryer, and is filtered and dried by the air silencer filter dryer. Then, it is compressed into the air tank through the air supply valve body unit, thus completing the air tank replenishment of the air suspension control system.

[0007] When the air suspension control system is in the air suspension raised state, the fourth air port and multiple fifth air ports are opened by switching the internal valve of the air supply valve body unit, while the first air port, second air port and third air port are closed. The gas in the air tank is compressed into multiple air springs through the air passage of the air supply valve body unit, causing the air springs to rise.

[0008] When the air suspension control system is in the air suspension descent state, the internal valve of the air supply valve body unit switches to open the fourth air port and multiple fifth air ports, and close the first air port, the second air port and the third air port. The gas in the multiple air springs is drawn into the air storage tank through the air passage of the air supply valve body unit, so that the air springs are lowered.

[0009] When the air suspension control system is in the automatic air spring exhaust state, the third air port and multiple fifth air ports are opened by switching the internal valve of the air supply valve body unit, while the first air port, second air port and fourth air port are closed. The gas in the multiple air springs passes through the air passage of the air supply valve body unit and is discharged to the external environment through the air silencer filter dryer.

[0010] When the air suspension control system is in the manual air spring exhaust state, the first air port and multiple fifth air ports are opened by switching the internal valve of the air supply valve body unit, while the second air port, the third air port and the fourth air port are closed. The gas in the multiple air springs is discharged to the external environment through the air passage of the air supply valve body unit and through the manual exhaust bolt.

[0011] When the air suspension control system pumps air from the air tank to an external load, the external load is connected to the self-sealing joint through the second vent port. The internal valve of the air supply valve body unit switches the second vent port and the fourth vent port open, while the first vent port, the third vent port, and multiple fifth vent ports are closed. The gas in the air tank is compressed into the external load through the air passage of the air supply valve body unit and the self-sealing joint, thus completing the air pumping operation of the air suspension control system.

[0012] When the air suspension control system pumps air from outside air to the external load, the external load is connected to the self-sealing joint through the second vent port. The internal valve of the air supply valve unit switches the second and third vent ports open, while the first, fourth, and multiple fifth vent ports are closed. Outside air is drawn in through the inlet and outlet ports of the air silencer filter dryer, and is filtered and dried by the air silencer filter dryer. Then, the air is compressed into the external load through the air supply valve unit and the self-sealing joint, completing the air pumping operation of the air suspension control system.

[0013] In some embodiments of this application, the air supply valve unit includes an air valve assembly, a switching valve assembly, a safety valve, an exhaust valve, a sensor, a dryer, and an air pump driven by a motor. The first and second air supply lines of the switching valve assembly are connected, and multiple air springs are connected to the first and second air supply lines of the switching valve assembly through the air valve assembly. The self-sealing joint is connected to the first air supply line of the switching valve assembly, and the sensor is located at the first air supply line of the switching valve assembly. The air storage tank is connected to the dryer... The dryer is connected to the third vent pipe of the switching valve group. The fourth vent pipe of the switching valve group is connected to the outlet of the air pump, the inlet of the manual exhaust bolt, one end of the exhaust valve, and the first vent of the safety valve. The fifth vent pipe of the switching valve group is connected to the inlet of the air pump, the second vent of the safety valve, and the inlet and outlet of the air silencer filter dryer. The pressure relief end of the safety valve, the inlet and outlet of the air silencer filter dryer, and the other end of the exhaust valve are connected.

[0014] In some embodiments of this application, the air valve assembly includes a first air valve, a second air valve, a third air valve, and a fourth air valve. One end of the fourth air valve is connected to a first vent line of the switching valve assembly. One end of the first air valve, one end of the second air valve, and one end of the third air valve are respectively connected to a second vent line of the switching valve assembly. The other ends of the first air valve, the second air valve, the third air valve, and the fourth air valve are respectively connected to an air spring.

[0015] In some embodiments of this application, the first air valve, the second air valve, the third air valve, and the fourth air valve are all pilot-operated two-position two-way solenoid valves.

[0016] In some embodiments of this application, the switching valve assembly includes a first switching valve, a second switching valve, a third switching valve, and a fourth switching valve. The gas storage tank is connected to one end of the first switching valve and one end of the second switching valve via the dryer. One end of the third switching valve is connected to one end of the first air valve, one end of the second air valve, one end of the third air valve, one end of the fourth air valve, and the self-sealing joint. One end of the fourth switching valve is connected to one end of the first air valve, one end of the second air valve, one end of the third air valve, and the fourth air valve. One end of the valve is connected to the self-sealing joint. The other end of the first switching valve is connected to the air outlet of the air pump, one end of the exhaust valve, and the air inlet of the manual exhaust bolt. The other ends of the second switching valve and the third switching valve are connected to the air inlet of the air pump, the second vent of the safety valve, and the air inlet and outlet of the air silencer filter dryer. The other end of the fourth switching valve is connected to the air inlet of the manual exhaust bolt, the other end of the first switching valve, the air outlet of the air pump, the first vent of the safety valve, and one end of the exhaust valve.

[0017] In some embodiments of this application, the first switching valve, the second switching valve, the third switching valve, and the fourth switching valve are all pilot-operated two-position two-way solenoid valves.

[0018] In some embodiments of this application, a one-way valve is provided between the air inlet and outlet of the air silencer filter dryer and the air inlet end of the air pump, the second vent end of the safety valve, the other end of the second switching valve, and the other end of the third switching valve.

[0019] In some embodiments of this application, the sensor is a pressure sensor and / or a temperature sensor.

[0020] In some embodiments of this application, the air silencer filter dryer includes a silencer component, a filter component, and a drying component connected in sequence. The silencer component is provided with a silencer element, and the air inlet and outlet are located at the end of the silencer component away from the filter component. The filter component is provided with a filter element, and the drying component is provided with a desiccant, and the air inlet and outlet are located at the end of the drying component away from the filter component.

[0021] External air drawn in through the air inlet and outlet passes sequentially through the silencer, the filter element, and the desiccant, and is then delivered to the air supply valve unit through the air inlet and outlet nozzles. Gas discharged from the air supply valve unit enters the air silencer filter dryer through the air inlet and outlet nozzles, passes sequentially through the desiccant, the filter element, and the silencer, and is then discharged into the external environment through the air inlet and outlet nozzles.

[0022] In some embodiments of this application, a two-way valve is provided between the silencing component and the filtering component. In the non-operating state of the air silencing filter dryer, the two-way valve blocks the gas flow between the silencing component and the filtering component. In the intake state of the air silencing filter dryer, the two-way valve opens the air path from the inlet / outlet port to the inlet / outlet nozzle. In the exhaust state of the air silencing filter dryer, the two-way valve opens the air path from the inlet / outlet nozzle to the inlet / outlet port.

[0023] The beneficial effects of the embodiments of this application are as follows:

[0024] This air suspension control system features a quick-connect structure with a self-sealing joint, allowing connection to external loads for air supply and improving air pump utilization. The air silencer filter dryer is separate from the air supply valve unit and located at the air inlet, ensuring the air is dried before entering the valve unit and thus maintaining dryness within the air suspension control system. A dryer is also placed between the air tank and the air supply valve unit, further ensuring dryness during each operation. Additionally, the intake and exhaust pipes are combined into a single line, reducing the number of pipes and simplifying vehicle layout. The air silencer filter dryer integrates the silencer, dryer, and filter into a single unit, increasing integration, reducing component count, and lowering noise during intake and exhaust. Attached Figure Description

[0025] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0026] Figure 1 A schematic diagram illustrating the structural principle of an air suspension control system with a self-sealing joint, provided in an embodiment of this application;

[0027] Explanation of reference numerals in the attached drawings: 1 is the air supply valve body unit; 11 is the self-sealing connector; 12 is the manual vent bolt; 13 is the air valve assembly; 131 is the first air valve; 132 is the second air valve; 133 is the third air valve; 134 is the fourth air valve; 14 is the switching valve assembly; 141 is the first switching valve; 142 is the second switching valve; 143 is the third switching valve; 144 is the fourth switching valve; 15 is the safety valve; 16 is the exhaust valve; 17 is the sensor; 18... 19 is the dryer, 10 is the motor, 10 is the air pump, 101 is the one-way valve, 110 is the first air inlet port, 120 is the second air inlet port, 130 is the third air inlet port, 140 is the fourth air inlet port, 150 is the fifth air inlet port, 2 is the air silencer filter dryer, 21 is the silencer component, 22 is the filter component, 23 is the drying component, 210 is the air inlet and exhaust nozzle, 220 is the air inlet and exhaust port, 3 is the air tank, 4 is the air spring, and 5 is the external load. Detailed Implementation

[0028] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this application, and not all of them. All other embodiments obtained by those skilled in the art based on the embodiments of this application without creative effort are within the scope of protection of this application.

[0029] It should be noted that, unless otherwise specified, the embodiments and features described in this application can be combined with each other. The terms "comprising" and "having," and any variations thereof, in the embodiments and drawings of this application are intended to cover non-exclusive inclusion. For example, a process, method, system, product, or device that includes a series of steps or units is not limited to the listed steps or units, but may optionally include steps or units not listed, or may optionally include other steps or units inherent to these processes, methods, products, or devices.

[0030] This application discloses an air suspension control system with a self-sealing joint. By adding a quick-connect structure for the self-sealing joint, an external load can be connected to inflate the external load, thereby improving the utilization rate of the air pump. Detailed descriptions follow.

[0031] Figure 1 An air suspension control system with a self-sealing joint, according to an embodiment of this application, is shown. For example... Figure 1As shown, the air suspension control system includes: an air supply valve body unit 1, an air silencer filter dryer 2, an air tank 3, and multiple air springs 4. The air supply valve body unit 1 is the air passage mechanism for switching the airflow direction in the air suspension control system of this embodiment. The air supply valve body unit 1 is provided with a first air inlet port 110, a second air inlet port 120, a third air inlet port 130, a fourth air inlet port 140, and multiple fifth air inlet ports 150. At the same time, in order to realize quick-connect inflation of the external load 5, the air supply valve body unit 1 in this embodiment includes a self-sealing connector 11 and a manual venting bolt 12. The manual venting bolt 12 is connected to the first air inlet port 110. The air supply valve body unit 1 realizes the manual venting function of the system through the manual venting bolt 12. The self-sealing connector 11 is connected to the second air inlet port 120. The self-sealing connector 11 is a self-sealing quick-connect structure. The external load 5 can be connected through the self-sealing connector 11 to inflate the external load 5. The air silencer filter dryer 2 is used to filter and dry the air entering the air suspension control system, and to reduce the noise during system intake and exhaust. The air silencer filter dryer 2 is provided with intake and exhaust nozzles 210 and intake and exhaust holes 220 at both ends. In this embodiment, the air supply valve body unit 1 combines the intake pipe and the exhaust pipe into one pipe. The third ventilation port 130 is the intake and exhaust port of the air supply valve body unit 1. The intake and exhaust nozzles 210 are connected to the third ventilation port 130, which not only reduces the number of pipes and facilitates the overall vehicle layout, but also ensures that the gas entering the air supply valve body unit 1 is dried, ensuring the internal dryness of the air suspension control system and improving the service life of the internal components of the air suspension control system. In addition, when exhausting through the air silencer filter dryer 2, the gas back-blowing function can be used to extend the service life of its internal desiccant, thereby ensuring the drying effect of the air silencer filter dryer 2. The air tank 3 is used in this embodiment of the air suspension control system to store filtered and dried gas for use by multiple air springs 4 in the air suspension control system. The fourth vent port 140 is the air storage port end of the air supply valve body unit 1. The air tank 3 is connected to the fourth vent port 140 to compress the gas supplemented by the air silencer filter dryer 2 into the air tank 3, or to recover the gas in the multiple air springs 4 into the air tank 3. The multiple air springs 4 are connected one-to-one with the multiple fifth vent ports 150. By filling or releasing gas into the multiple air springs 4, the height of each air spring 4 is changed, thereby adjusting the height / level of the vehicle body relative to the axle or road surface.

[0032] When the air suspension control system is in the air tank replenishment state, the internal valve of the air supply valve body unit 1 switches to open the third air port 130 and the fourth air port 140, and close the first air port 110, the second air port 120 and multiple fifth air ports 150. External air is drawn in through the air inlet and outlet ports 220 of the air silencer filter dryer 2, and is filtered and dried by the air silencer filter dryer 2. Then, it is compressed into the air tank 3 through the air supply valve body unit 1, completing the air tank replenishment of the air suspension control system.

[0033] When the air suspension control system is in the air-suspended raised state, the internal valve of the air supply valve body unit 1 switches to open the fourth air port 140 and multiple fifth air ports 150, and close the first air port 110, the second air port 120 and the third air port 130. The gas in the air tank 3 is compressed into multiple air springs 4 through the air passage of the air supply valve body unit 1, causing the air springs 4 to rise.

[0034] When the air suspension control system is in the unsuspended descent state, the internal valve of the air supply valve body unit 1 switches to open the fourth air port 140 and multiple fifth air ports 150, and close the first air port 110, the second air port 120 and the third air port 130. The gas in the multiple air springs 4 is drawn into the air storage tank 3 through the air passage of the air supply valve body unit 1, so that the air springs 4 lower their height.

[0035] When the air suspension control system is in the automatic air spring exhaust state, the third air port 130 and multiple fifth air ports 150 are opened by switching the internal valve of the air supply valve body unit 1, while the first air port 110, second air port 120 and fourth air port 140 are closed. The gas in the multiple air springs 4 passes through the air passage of the air supply valve body unit 1 and is discharged to the external environment through the air silencer filter dryer 2.

[0036] When the air suspension control system is in the manual air spring exhaust state, the first air port 110 and multiple fifth air ports 150 are opened by switching the internal valve of the air supply valve body unit 1, while the second air port 120, third air port 130 and fourth air port 140 are closed. The gas in the multiple air springs 4 is discharged to the external environment through the air passage of the air supply valve body unit 1 and through the manual exhaust bolt 12.

[0037] When the air suspension control system pumps air from the air tank 3 to the external load 5, it connects the external load 5 to the self-sealing joint 11 through the second air port 120. The internal valve of the air supply valve body unit 1 switches the second air port 120 and the fourth air port 140 open, while closing the first air port 110, the third air port 130 and multiple fifth air ports 150. The gas in the air tank 3 is compressed into the external load 5 through the air passage of the air supply valve body unit 1 and the self-sealing joint 11, thus completing the air pumping of the air suspension control system to the external load.

[0038] When the air suspension control system pumps air from outside air to the external load 5, it connects the external load 5 to the self-sealing joint 11 through the second vent port 120. The internal valve of the air supply valve body unit 1 switches the second vent port 120 and the third vent port 130 open, while closing the first vent port 110, the fourth vent port 140 and multiple fifth vent ports 150. Outside air is drawn in through the air intake and exhaust ports 220 of the air silencer filter dryer 2, and is filtered and dried by the air silencer filter dryer 2. After that, the air is compressed into the external load 5 through the air passage of the air supply valve body unit 1 and the self-sealing joint 11, thus completing the air pumping of air from outside by the air suspension control system.

[0039] In some embodiments, such as Figure 1As shown, the air supply valve body unit 1 also includes an air valve assembly 13, a switching valve assembly 14, a safety valve 15, an exhaust valve 16, a sensor 17, a dryer 18, and an air pump 10 driven by a motor 19. The switching valve assembly 14 is mainly used for switching the flow direction of the overall air path in the air supply valve body unit 1. It is equipped with a first air supply line, a second air supply line, a third air supply line, a fourth air supply line, and a fifth air supply line. The first and second air supply lines of the switching valve assembly 14 are connected. The air valve assembly 13 is mainly used for controlling the on / off of the air path of multiple air springs 4 in the air supply valve body unit 1. The multiple air springs 4 are connected to the first and second air supply lines of the switching valve assembly 14 through the air valve assembly 13. The self-sealing joint 11 is connected to the first air supply line of the switching valve assembly 14, and the sensor 17 is located at the switching valve assembly 14. At the first vent line of valve group 14, the air tank 3 is connected to the third vent line of switching valve group 14 via dryer 18. The fourth vent line of switching valve group 14 is connected to the outlet of air pump 10, the inlet of manual vent bolt 12, one end of vent valve 16, and the first vent of safety valve 15. The fifth vent line of switching valve group 14 is connected to the inlet of air pump 10, the second vent of safety valve 15, and the inlet and outlet nozzles 210 of air silencer filter dryer 2. The pressure relief end of safety valve 15, the inlet and outlet nozzles 210 of air silencer filter dryer 2, and the other end of vent valve 16 are connected. In this embodiment, by setting dryer 18 between air tank 3 and switching valve group 14, the air passes through dryer 18 during each air circulation within the air suspension control system, thereby ensuring that there is no water vapor in the internal air path of the air suspension control system. Furthermore, in the specific implementation process, sensor 17 is a pressure sensor and / or temperature sensor to monitor the pressure and temperature at multiple air springs 4 and self-sealing joints 11, so as to control the pressure of inflating the external load 5, and at the same time, to provide timely warnings in case of abnormalities, thereby ensuring the overall safety of the air suspension control system.

[0040] An air spring 4 is installed at each of the four wheels of the car. This means that there are four air springs 4 in this air suspension control system. Correspondingly, as... Figure 1As shown, the air valve assembly 13 includes a first air valve 131, a second air valve 132, a third air valve 133, and a fourth air valve 134. Each of these four air valves is correspondingly connected to one of four air springs 4. Specifically, one end of the fourth air valve 134 is connected to the first vent line of the switching valve assembly 14. One end of each of the first, second, and third air valves is connected to the second vent line of the switching valve assembly 14. The other ends of each of these three air valves are connected to an air spring 4. In practice, all four air valves are pilot-operated two-position two-way solenoid valves, enabling precise control of the air valves.

[0041] Furthermore, such as Figure 1 As shown, the switching valve assembly 14 includes a first switching valve 141, a second switching valve 142, a third switching valve 143, and a fourth switching valve 144. The gas storage tank 3 is connected to one end of the first switching valve 141 and one end of the second switching valve 142 via a dryer 18. One end of the third switching valve 143 is connected to one end of the first air valve 131, one end of the second air valve 132, one end of the third air valve 133, one end of the fourth air valve 134, and a self-sealing connector 11. One end of the fourth switching valve 144 is connected to one end of the first air valve 131, one end of the second air valve 132, one end of the third air valve 133, one end of the fourth air valve 134, and a self-sealing connector 11. The other end of switching valve 141 is connected to the outlet of air pump 10, one end of exhaust valve 16, and the inlet of manual exhaust bolt 12, respectively. The other ends of the second switching valve 142 and the third switching valve 143 are connected to the inlet of air pump 10, the second vent of safety valve 15, and the inlet / outlet nozzle 210 of air silencer filter dryer 2, respectively. The other end of the fourth switching valve 144 is connected to the inlet of manual exhaust bolt 12, the other end of the first switching valve 141, the outlet of air pump 10, the first vent of safety valve 15, and one end of exhaust valve 16, respectively. In specific implementation, the first switching valve 141, the second switching valve 142, the third switching valve 143, and the fourth switching valve 144 are all pilot-operated two-position two-way solenoid valves to achieve precise control of the switching valves.

[0042] In addition, such as Figure 1 As shown, a one-way valve 101 is provided between the air inlet and outlet nozzle 210 of the air silencer filter dryer 2 and the air inlet end of the air pump 10, the second vent end of the safety valve 15, the other end of the second switching valve 142, and the other end of the third switching valve 143 to prevent gas from flowing backward.

[0043] In other embodiments, such as Figure 1 As shown, the air silencer filter dryer 2 includes a silencer component 21, a filter component 22, and a dryer component 23 connected in sequence. The silencer component 21 contains a silencer element (not shown in the figure), and the inlet / outlet port 220 is located at the end of the silencer component 21 furthest from the filter component 22. The filter component 22 contains a filter element (not shown in the figure), and the dryer component 23 contains a desiccant (not shown in the figure), with the inlet / outlet port 210 located at the end of the dryer component 23 furthest from the filter component 22. External air drawn in through the inlet / outlet port 220 passes sequentially through the silencer component, filter element, and desiccant, and is then delivered to the air supply valve unit 1 through the inlet / outlet port 210. Integrating the silencer, dryer, and filter improves the device's integration, reduces the number of components, filters and dries impurities in the gas entering the air supply valve unit 1, and reduces the noise of the air suspension control system during air intake. In addition, the gas discharged from the air supply valve unit 1 enters the air silencer filter dryer 2 through the air inlet and outlet nozzles 210, passes through the desiccant, filter element, and silencer components in sequence, and is discharged to the external environment through the air inlet and outlet holes 220. During this process, when the dry gas is discharged to the desiccant, it can absorb the moisture in the desiccant and discharge the absorbed moisture to the outside of the air silencer filter dryer 2, thereby reducing the saturation of the desiccant and ensuring that the desiccant can be reused for a long time. At the same time, when the gas passes through the filter element, it can carry away some impurities in the filter element, making the filter element's service life longer, and can also reduce the noise of the air suspension control system exhaust.

[0044] Furthermore, a two-way valve (not shown in the figure) is provided between the silencing component 21 and the filter component 22. In the non-operating state of the air silencing filter dryer 2, the two-way valve blocks the gas flow between the silencing component 21 and the filter component 22. In the intake state of the air silencing filter dryer 2, the two-way valve opens the air path from the inlet / outlet port 220 to the inlet / outlet nozzle 210. In the exhaust state of the air silencing filter dryer 2, the two-way valve opens the air path from the inlet / outlet nozzle 210 to the inlet / outlet port 220. It should be noted that the structure of the two-way valve in this embodiment is not limited; any structure that can achieve the above-mentioned function of the two-way valve is acceptable.

[0045] The above describes the various components of the air suspension control system with self-sealing joints provided in this embodiment and their connection relationships. The following section will discuss further details. Figure 1 The working principle of an air suspension control system with a self-sealing joint is described in detail.

[0046] When the air suspension control system is in the air tank replenishment state, the first switching valve 141 and the fourth switching valve 144 are energized and opened, while the second switching valve 142, the third switching valve 143, the first air valve 131, the second air valve 132, the third air valve 133, the fourth air valve 134, and the exhaust valve 16 are de-energized and closed. Simultaneously, the motor 19 is activated, thus ensuring that the air passages of the first switching valve 141 and the fourth switching valve 144 are connected, while the air passages of the second switching valve 142 and the third switching valve 143 are closed. All air passages are disconnected. The air passages of the first air valve 131, the second air valve 132, the third air valve 133, the fourth air valve 134, and the exhaust valve 16 are also disconnected. The motor 19 drives the air pump 10 to draw in external air through the air inlet and outlet ports 220 of the air silencer filter dryer 2. After filtering and drying impurities, the air is compressed into the air storage tank 3 through the dryer 18 via the air passage in the air supply valve body unit 1, thus completing the air replenishment of the air storage tank of the air suspension control system.

[0047] When the air suspension control system is in the air suspension raised state, the second switching valve 142, the fourth switching valve 144, the first air valve 131, the second air valve 132, the third air valve 133, and the fourth air valve 134 are energized and opened, the first switching valve 141, the third switching valve 143, and the exhaust valve 16 are de-energized and closed, and the motor 19 is turned on, so that the air passages of the second switching valve 142, the fourth switching valve 144, the first air valve 131, the second air valve 132, the third air valve 133, and the fourth air valve 134 are all in the connected state, and the air passages of the first switching valve 141, the third switching valve 143, and the exhaust valve 16 are all in the disconnected state. The motor 19 drives the air pump 10 to pump the gas in the air tank 3 into the four air springs 4 through the air passage in the air supply valve body unit 1 that is in the connected state, and through the dryer 18, so that the four air springs 4 are raised.

[0048] When the air suspension control system is in the unsuspended descent state, the first switching valve 141, the third switching valve 143, the first air valve 131, the second air valve 132, the third air valve 133, and the fourth air valve 134 are energized and opened, while the second switching valve 142, the fourth switching valve 144, and the exhaust valve 16 are de-energized and closed. The motor 19 is also activated, thus connecting the air passages of the first switching valve 141, the third switching valve 143, the first air valve 131, the second air valve 132, the third air valve 133, and the fourth air valve 134, while disconnecting the air passages of the second switching valve 142, the fourth switching valve 144, and the exhaust valve 16. The motor 19 drives the air pump 10 to pump the gas from the four air springs 4 through the connected air passages in the air supply valve unit 1, via the dryer 18, into the air storage tank 3, thereby lowering the height of the four air springs 4.

[0049] When the air suspension control system is in the automatic air spring exhaust state, the fourth switching valve 144, the first air valve 131, the second air valve 132, the third air valve 133, the fourth air valve 134 and the exhaust valve 16 are energized and opened. The third switching valve 143 can also be energized and opened. There is no restriction on the state of the third switching valve 143. The first switching valve 141 and the second switching valve 142 are de-energized and closed, and the motor 19 is turned on. Since the internal air pressure of the air suspension control system is greater than the external air pressure, the air passages of the third switching valve 143, the fourth switching valve 144, the exhaust valve 16, the first air valve 131, the second air valve 132, the third air valve 133 and the fourth air valve 134 are all in the connected state, and the air passages of the first switching valve 141 and the second switching valve 142 are all in the disconnected state. The gas in the four air springs 4 passes through the air passage in the air supply valve body unit 1 that is in the connected state and is discharged to the external environment through the air silencer filter dryer 2.

[0050] When the air suspension control system is in the manual air spring exhaust state, the third switching valve 143, the first air valve 131, the second air valve 132, the third air valve 133, and the fourth air valve 134 are energized and opened, and the manual exhaust bolt 12 is manually opened. The first switching valve 141, the second switching valve 142, the fourth switching valve 144, and the exhaust valve 16 are de-energized and closed, and the motor 19 is turned on. This makes the air passages of the third switching valve 143, the first air valve 131, the second air valve 132, the third air valve 133, and the fourth air valve 134 all connected, and the air passages of the first switching valve 141, the second switching valve 142, the fourth switching valve 144, and the exhaust valve 16 all disconnected. The gas in the four air springs 4 is discharged to the external environment through the air passages in the air supply valve body unit 1 that are in the connected state.

[0051] When the air suspension control system pumps air from the air tank 3 to the external load 5, the external load 5 is connected to the self-sealing joint 11 through the second air port 120. The second switching valve 142 and the fourth switching valve 144 are energized and opened. The first switching valve 141, the third switching valve 143, the first air valve 131, the second air valve 132, the third air valve 133, the fourth air valve 134 and the exhaust valve 16 are de-energized and closed, and the motor 19 is turned on. This makes the air passages of the second switching valve 142 and the fourth switching valve 144 connected, and the air passages of the first switching valve 141, the third switching valve 143, the first air valve 131, the second air valve 132, the third air valve 133, the fourth air valve 134 and the exhaust valve 16 disconnected. The gas in the air tank 3 is pumped into the external load 5 through the connected air passage in the air supply valve body unit 1, through the dryer 18 and the self-sealing joint 11, thus completing the air pumping of the air suspension control system to the external load.

[0052] When the air suspension control system pumps air from outside to the external load 5, the external load 5 is connected to the self-sealing joint 11 through the second air port 120. The fourth switching valve 144 is energized and opened. The first switching valve 141, the second switching valve 142, the third switching valve 143, the first air valve 131, the second air valve 132, the third air valve 133, the fourth air valve 134, and the exhaust valve 16 are de-energized and closed, and the motor 19 is turned on, thereby connecting the air passage of the fourth switching valve 144. The first switching valve 141... 41. The air passages of the second switching valve 142, the third switching valve 143, the first air valve 131, the second air valve 132, the third air valve 133, the fourth air valve 134, and the exhaust valve 16 are all in the disconnected state. External air is drawn in through the inlet and outlet ports 220 of the air silencer filter dryer 2, and after being filtered and dried by the air silencer filter dryer 2, it is pumped into the external load 5 through the air passage in the air supply valve body unit 1 that is in the connected state, and the air suspension control system inflates the air externally.

[0053] In summary, this application discloses an air suspension control system with a self-sealing joint. By adding a quick-connect structure for the self-sealing joint, an external load can be connected to inflate it, improving the utilization rate of the air pump. Furthermore, the air silencer filter dryer is separated from the air supply valve unit and located at the air inlet end of the air supply valve unit, allowing the gas to be dried before entering the air supply valve unit, thus ensuring the dryness inside the air suspension control system. Simultaneously, a dryer is installed between the air tank and the air supply valve unit, ensuring the gas inside the system is dried during each operation, further guaranteeing the dryness inside the air suspension control system. Additionally, the intake and exhaust pipes are combined into a single pipe, reducing the number of pipes and facilitating vehicle layout. The air silencer filter dryer in this air suspension control system integrates the silencer, dryer, and filter into one unit, improving integration, reducing the number of components, and lowering noise during system intake and exhaust.

[0054] It will be understood by those skilled in the art that the accompanying drawings are merely schematic diagrams of one embodiment, and the components shown in the drawings are not necessarily essential for implementing this invention. It should also be noted that similar reference numerals and letters in the following drawings denote similar items; therefore, once an item is defined in one drawing, it does not need to be further defined and explained in subsequent drawings.

[0055] In the description of the embodiments of this application, unless otherwise expressly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances. Furthermore, in the description of the embodiments of this application, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or component referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0056] Finally, it should be noted that the above-described embodiments are merely specific implementations of this utility model, used to illustrate the technical solution of this utility model, and not to limit it. The protection scope of this utility model is not limited thereto. Although this utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that any person skilled in the art can still modify or easily conceive of changes to the technical solutions described in the foregoing embodiments, or make equivalent substitutions for some of the technical features, within the technical scope disclosed in this utility model. These modifications, changes, or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this utility model, and should all be covered within the protection scope of this utility model. Therefore, the protection scope of this utility model should be determined by the protection scope described in the claims.

Claims

1. An air suspension control system with a self-sealing joint, characterized in that, The air suspension control system includes: an air supply valve body unit, an air silencer filter dryer, an air tank, and multiple air springs. The air supply valve body unit includes a self-sealing connector and a manual venting bolt, and is provided with a first vent port, a second vent port, a third vent port, a fourth vent port, and multiple fifth vent ports. The manual venting bolt is connected to the first vent port, and the self-sealing connector is connected to the second vent port. The air silencer filter dryer is provided with an air inlet / outlet nozzle and an air inlet / outlet hole at both ends, respectively. The air inlet / outlet nozzle is connected to the third vent port, and the air tank is connected to the fourth vent port. The multiple air springs are connected to the multiple fifth vent ports one by one. When the air suspension control system is in the air tank replenishment state, the third and fourth air ports are opened by switching the internal valve of the air supply valve body unit, while the first, second, and multiple fifth air ports are closed. External air is drawn in through the air inlet and outlet ports of the air silencer filter dryer, and is filtered and dried by the air silencer filter dryer. Then, it is compressed into the air tank through the air supply valve body unit, thus completing the air tank replenishment of the air suspension control system. When the air suspension control system is in the air suspension raised state, the fourth air port and multiple fifth air ports are opened by switching the internal valve of the air supply valve body unit, while the first air port, second air port and third air port are closed. The gas in the air tank is compressed into multiple air springs through the air passage of the air supply valve body unit, causing the air springs to rise. When the air suspension control system is in the air suspension descent state, the internal valve of the air supply valve body unit switches to open the fourth air port and multiple fifth air ports, and close the first air port, the second air port and the third air port. The gas in the multiple air springs is drawn into the air storage tank through the air passage of the air supply valve body unit, so that the air springs are lowered. When the air suspension control system is in the automatic air spring exhaust state, the third air port and multiple fifth air ports are opened by switching the internal valve of the air supply valve body unit, while the first air port, second air port and fourth air port are closed. The gas in the multiple air springs passes through the air passage of the air supply valve body unit and is discharged to the external environment through the air silencer filter dryer. When the air suspension control system is in the manual air spring exhaust state, the first air port and multiple fifth air ports are opened by switching the internal valve of the air supply valve body unit, while the second air port, the third air port and the fourth air port are closed. The gas in the multiple air springs is discharged to the external environment through the air passage of the air supply valve body unit and through the manual exhaust bolt. When the air suspension control system pumps air from the air tank to an external load, the external load is connected to the self-sealing joint through the second vent port. The internal valve of the air supply valve body unit switches the second vent port and the fourth vent port open, while the first vent port, the third vent port, and multiple fifth vent ports are closed. The gas in the air tank is compressed into the external load through the air passage of the air supply valve body unit and the self-sealing joint, thus completing the air pumping operation of the air suspension control system. When the air suspension control system pumps air from outside air to the external load, the external load is connected to the self-sealing joint through the second vent port. The internal valve of the air supply valve unit switches the second and third vent ports open, while the first, fourth, and multiple fifth vent ports are closed. Outside air is drawn in through the inlet and outlet ports of the air silencer filter dryer, and is filtered and dried by the air silencer filter dryer. Then, the air is compressed into the external load through the air supply valve unit and the self-sealing joint, completing the air pumping operation of the air suspension control system.

2. The air suspension control system with a self-sealing joint according to claim 1, characterized in that, The air supply valve unit includes an air valve group, a switching valve group, a safety valve, an exhaust valve, a sensor, a dryer, and an air pump driven by a motor. The first and second air supply lines of the switching valve group are connected, and multiple air springs are connected to the first and second air supply lines of the switching valve group through the air valve group. The self-sealing joint is connected to the first air supply line of the switching valve group, and the sensor is located at the first air supply line of the switching valve group. The air storage tank is connected to the third air supply line of the switching valve group through the dryer. The fourth air supply line of the switching valve group is connected to the air outlet of the air pump, the air inlet of the manual exhaust bolt, one end of the exhaust valve, and the first air supply line of the safety valve. The fifth air supply line of the switching valve group is connected to the air inlet of the air pump, the second air supply line of the safety valve, and the air inlet and exhaust nozzles of the air silencer filter dryer. The pressure relief end of the safety valve, the air inlet and exhaust nozzles of the air silencer filter dryer, and the other end of the exhaust valve are connected.

3. The air suspension control system with a self-sealing joint according to claim 2, characterized in that, The air valve assembly includes a first air valve, a second air valve, a third air valve, and a fourth air valve. One end of the fourth air valve is connected to the first vent line of the switching valve assembly. One end of the first air valve, one end of the second air valve, and one end of the third air valve are respectively connected to the second vent line of the switching valve assembly. The other ends of the first air valve, the second air valve, the third air valve, and the fourth air valve are respectively connected to an air spring.

4. The air suspension control system with a self-sealing joint according to claim 3, characterized in that, The first air valve, the second air valve, the third air valve, and the fourth air valve are all pilot-operated two-position two-way solenoid valves.

5. The air suspension control system with a self-sealing joint according to claim 3, characterized in that, The switching valve assembly includes a first switching valve, a second switching valve, a third switching valve, and a fourth switching valve. The gas storage tank is connected to one end of the first switching valve and one end of the second switching valve via the dryer. One end of the third switching valve is connected to one end of the first air valve, one end of the second air valve, one end of the third air valve, one end of the fourth air valve, and the self-sealing joint. One end of the fourth switching valve is connected to one end of the first air valve, one end of the second air valve, one end of the third air valve, one end of the fourth air valve, and the self-sealing joint. The self-sealing connector is connected, and the other end of the first switching valve is connected to the air outlet of the air pump, one end of the exhaust valve, and the air inlet of the manual exhaust bolt. The other ends of the second switching valve and the third switching valve are connected to the air inlet of the air pump, the second vent of the safety valve, and the air inlet and outlet of the air silencer filter dryer. The other end of the fourth switching valve is connected to the air inlet of the manual exhaust bolt, the other end of the first switching valve, the air outlet of the air pump, the first vent of the safety valve, and one end of the exhaust valve.

6. The air suspension control system with a self-sealing joint according to claim 5, characterized in that, The first switching valve, the second switching valve, the third switching valve, and the fourth switching valve are all pilot-operated two-position two-way solenoid valves.

7. The air suspension control system with a self-sealing joint according to claim 5, characterized in that, A one-way valve is provided between the air inlet and outlet of the air silencer filter dryer and the air inlet of the air pump, the second vent of the safety valve, the other end of the second switching valve, and the other end of the third switching valve.

8. The air suspension control system with a self-sealing joint according to claim 2, characterized in that, The sensor is a pressure sensor and / or a temperature sensor.

9. The air suspension control system with a self-sealing joint according to claim 1, characterized in that, The air silencer filter dryer includes a silencer component, a filter component, and a drying component connected in sequence. The silencer component is provided with a silencer element, and the air inlet and outlet are located at the end of the silencer component away from the filter component. The filter component is provided with a filter element, and the drying component is provided with a desiccant, and the air inlet and outlet are located at the end of the drying component away from the filter component. External air drawn in through the air inlet and outlet passes sequentially through the silencer, the filter element, and the desiccant, and is then delivered to the air supply valve unit through the air inlet and outlet nozzles. Gas discharged from the air supply valve unit enters the air silencer filter dryer through the air inlet and outlet nozzles, passes sequentially through the desiccant, the filter element, and the silencer, and is then discharged into the external environment through the air inlet and outlet nozzles.

10. The air suspension control system with a self-sealing joint according to claim 9, characterized in that, A two-way valve is provided between the silencing component and the filter component. In the non-working state of the air silencing filter dryer, the two-way valve blocks the gas flow between the silencing component and the filter component. In the intake state of the air silencing filter dryer, the two-way valve opens the air path from the inlet / outlet port to the inlet / outlet nozzle. In the exhaust state of the air silencing filter dryer, the two-way valve opens the air path from the inlet / outlet nozzle to the inlet / outlet port.

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