Air path distribution device, air suspension system and vehicle

Abstract

The invention discloses an air path distribution device, an air suspension system and a vehicle. The gas circuit distribution device comprises a gas circuit block and a drying tank, a gas circuit cavity is formed in the gas circuit block, the gas circuit block is provided with a gas inlet connector, an exhaust outlet connector and an atmosphere exhaust connector, the gas inlet connector, the exhaust outlet connector and the atmosphere exhaust connector are all communicated with the gas circuit cavity, and the gas inlet connector is used for being connected with a gas outlet of a pump body. The exhaust outlet connector is used for being connected with an air inlet of the pump body, and the atmosphere exhaust connector is communicated with the outside atmosphere. The drying tank is installed on the gas path block and provided with a drying cavity, and the drying cavity communicates with the gas path cavity. The drying tank is mounted on the gas path block, so that gas exhausted by the pump body is regenerated by the drying tank and then is directly exhausted from the atmosphere exhaust interface without returning to the pump body again, and an exhaust port and a mounting structure of the drying tank are not required to be arranged on the pump body, so that the pump body is simple in structure; and therefore, a gas path control structure formed by the gas path distribution device and the pump body is relatively concentrated and simple.

Description

Technical Field

[0001] The present application relates to the field of vehicle technology, and in particular to an air path distribution device, an air suspension system and a vehicle. Background Art

[0002] In the related art, the air suspension system includes a pump body, a drying tank, a distribution valve, an air storage tank and an air spring. The drying tank is arranged on the pump body. The compressed gas in the pump body is dried by the drying tank and then flows to the distribution valve to the air storage tank and the air spring. The air spring lowering process needs to be exhausted, and the exhausted gas needs to return to the pump body again, flow through the drying tank for regeneration, and then be discharged to the atmosphere. The exhaust port is also arranged on the pump body, which makes the pump body structure complicated and the air path control structure scattered and complicated. Summary of the invention

[0003] The present application aims to solve at least one of the above technical problems in the prior art to a certain extent. To this end, the present application proposes a gas path distribution device, which makes the structure of gas path control simple.

[0004] The present application further proposes an air suspension system having the above-mentioned air path distribution device.

[0005] The application also proposes a vehicle having the air suspension system.

[0006] The gas circuit distribution device according to the embodiment of the present application includes: a gas circuit block and a drying tank, the gas circuit block has a gas circuit cavity, the gas circuit block has a gas inlet interface, an exhaust outlet interface and an atmospheric exhaust interface, the gas inlet interface, the exhaust outlet interface and the atmospheric exhaust interface are all connected to the gas circuit cavity, the gas inlet interface is used to connect the gas outlet of the pump body, the exhaust outlet interface is used to connect the gas inlet of the pump body, and the atmospheric exhaust interface is connected to the outside atmosphere; the drying tank is installed on the gas circuit block, the drying tank has a drying cavity, and the drying cavity is connected to the gas circuit cavity.

[0007] According to the air path distribution device of the embodiment of the present application, by installing the drying tank on the air path block, the gas exhausted from the pump body is directly discharged from the atmospheric exhaust interface after regeneration of the drying tank, without returning to the pump body again. There is no need to set an exhaust port and an installation structure of the drying tank on the pump body, thereby making the structure of the pump body simple, and further making the air path control structure composed of the air path distribution device and the pump body more centralized and simple.

[0008] According to some embodiments of the present application, the drying tank has a drying tank inlet and a drying tank outlet, both of which are connected to the drying chamber and the air circuit chamber, the drying tank inlet is plug-matched with the air circuit block, and the drying tank outlet is plug-matched with the air circuit block.

[0009] According to some embodiments of the present application, a sealing ring is provided at the mating point between the inlet of the drying tank and the gas circuit block; and / or a sealing ring is provided at the mating point between the outlet of the drying tank and the gas circuit block.

[0010] According to some embodiments of the present application, the gas circuit distribution device also includes: a first solenoid valve and a second solenoid valve, the first solenoid valve is arranged at the gas inlet interface, when the first solenoid valve is opened, the atmospheric exhaust interface is connected to the gas circuit cavity, and the gas entering the gas inlet interface through the gas outlet of the pump body is discharged to the atmosphere from the atmospheric exhaust interface through the first solenoid valve; when the first solenoid valve is closed, the atmospheric exhaust interface is isolated from the gas circuit cavity, and the gas outlet of the pump body is directly connected to the gas circuit cavity through the gas inlet interface; the second solenoid valve is arranged at the exhaust outlet interface, and the second solenoid valve is used to open or close the exhaust outlet interface, when the second solenoid valve is opened, the air inlet of the pump body is connected to the gas circuit cavity through the exhaust outlet interface; when the second solenoid valve is closed, the air inlet of the pump body is isolated from the gas circuit cavity.

[0011] According to some embodiments of the present application, the air circuit block further has at least one air spring interface, which is used to connect an air spring, and the air spring interface is in communication with the air circuit cavity.

[0012] According to some embodiments of the present application, the air path distribution device further includes: an air spring solenoid valve, which is arranged at the air spring interface, and the air spring solenoid valve is used to open or close the corresponding air spring interface.

[0013] According to some embodiments of the present application, the gas circuit block further has a gas tank interface for connecting to a gas tank, and the gas tank interface is communicated with the gas circuit cavity.

[0014] According to some embodiments of the present application, a gas storage solenoid valve for opening or closing the gas storage tank interface is provided at the gas storage tank interface.

[0015] According to some embodiments of the present application, the air circuit block includes an air circuit housing, a limit plate and a fixed bracket, the air circuit cavity is formed in the air circuit housing, the limit plate is located in the air circuit cavity, and the limit plate is installed on the air circuit housing, and the fixed bracket presses the first solenoid valve, the second solenoid valve, the air spring solenoid valve and the air storage solenoid valve against the limit plate.

[0016] According to some embodiments of the present application, the first solenoid valve, the second solenoid valve, the air spring solenoid valve and the air storage solenoid valve are located on the same side of the limiting plate.

[0017] According to some embodiments of the present application, the first solenoid valve, the second solenoid valve, the air spring solenoid valve and the air storage solenoid valve are controlled by the same circuit board.

[0018] According to some embodiments of the present application, the gas circuit distribution device also includes a first fastener and a second fastener, the first fastener is used to connect the limit plate and the gas circuit housing, the gas circuit housing includes a fixing column, and the second fastener is used to connect the fixing bracket and the fixing column.

[0019] According to some embodiments of the present application, the second solenoid valve is a boost solenoid valve. When the second solenoid valve and the gas storage solenoid valve are opened, the air inlet of the pump body and the gas storage tank are connected to the air path cavity, so that the gas in the gas storage tank returns to the pump body and is compressed again.

[0020] According to some embodiments of the present application, the gas circuit block further has an atmospheric air inlet interface, and the atmospheric air inlet interface is suitable for being connected to the gas circuit cavity and the external atmosphere.

[0021] According to another embodiment of the present application, an air suspension system includes a pump body and the above-mentioned air path distribution device, the gas inlet interface is connected to the air outlet of the pump body, and the exhaust outlet interface is connected to the air inlet of the pump body.

[0022] According to the air suspension system of the embodiment of the present application, the air path distribution device thereof installs the drying tank on the air path block, so that the gas exhausted from the pump body is directly discharged from the atmospheric exhaust interface after being regenerated by the drying tank, without returning to the pump body again. There is no need to set an exhaust port and an installation structure of the drying tank on the pump body, thereby making the structure of the pump body simple, and further making the air path control structure composed of the air path distribution device and the pump body relatively centralized and simple.

[0023] According to some embodiments of the present application, the air suspension system further includes an air spring, and the air spring interface of the air circuit block is connected to the corresponding air spring.

[0024] According to some embodiments of the present application, the air suspension system further includes an air tank, and the air tank interface of the air circuit block is connected to the air tank.

[0025] A vehicle according to yet another embodiment of the present application includes the above-mentioned air suspension system.

[0026] According to the vehicle of the embodiment of the present application, the air path distribution device of the air suspension system thereof installs the drying tank on the air path block, so that the gas exhausted from the pump body is directly discharged from the atmospheric exhaust interface after regeneration of the drying tank, without returning to the pump body again. There is no need to set an exhaust port and a mounting structure of the drying tank on the pump body, thereby making the structure of the pump body simple, and further making the air path control structure composed of the air path distribution device and the pump body relatively centralized and simple.

[0027] Additional aspects and advantages of the present application will be given in part in the description below, and in part will become apparent from the description below, or will be learned through the practice of the present application. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 is a three-dimensional schematic diagram of a gas path distribution device according to an embodiment of the present application;

[0029] Figure 2 is a cross-sectional schematic diagram of a gas path distribution device according to an embodiment of the present application;

[0030] Figure 3 is another cross-sectional schematic diagram of the gas path distribution device according to an embodiment of the present application;

[0031] Figure 4 is another cross-sectional schematic diagram of the gas path distribution device according to an embodiment of the present application;

[0032] Figure 5 is a front view of a gas path distribution device according to an embodiment of the present application;

[0033] Figure 6 is a side view of a gas path distribution device according to an embodiment of the present application;

[0034] Figure 7 is a schematic cross-sectional view of a gas path distribution device according to an embodiment of the present application;

[0035] Figure 8 is a schematic diagram of the connection between the gas path distribution device and the pump body according to an embodiment of the present application;

[0036] Fig. 9 is a schematic diagram of a closed air circuit principle of an air suspension system according to an embodiment of the present application;

[0037] Fig.10 is a schematic diagram of an open air circuit principle of an air suspension system according to another embodiment of the present application;

[0038] Fig.11 yes Fig. 9 The first working condition schematic diagram of the closed gas circuit is shown;

[0039] Fig.12 yes Fig. 9The second working condition schematic diagram of the closed gas circuit shown;

[0040] Fig.13 yes Fig. 9 The third working condition schematic diagram of the closed gas circuit shown;

[0041] Fig.14 yes Fig. 9 The fourth working condition schematic diagram of the closed gas circuit is shown;

[0042] Fig.15 yes Fig. 9 The fifth working condition schematic diagram of the closed gas circuit is shown;

[0043] Fig.16 yes Fig. 9 The sixth working condition schematic diagram of the closed gas circuit shown;

[0044] Fig.17 yes Fig. 9 The seventh working condition schematic diagram of the closed gas circuit shown;

[0045] Fig.18 yes Fig. 9 The eighth working condition schematic diagram of the closed gas circuit shown;

[0046] Fig.19 yes Fig. 9 The ninth working condition schematic diagram of the closed gas circuit shown;

[0047] Fig. 20 yes Fig. 9 The tenth working condition schematic diagram of the closed gas circuit shown;

[0048] Fig.21 yes Fig. 9 The eleventh working condition schematic diagram of the closed gas circuit shown;

[0049] Fig. 22 yes Fig. 9 The twelfth working condition schematic diagram of the closed gas circuit shown;

[0050] Fig.23 yes Fig. 9 The thirteenth working condition schematic diagram of the closed gas circuit is shown;

[0051] Fig.24 is a schematic diagram of a vehicle according to an embodiment of the present application.

[0052] Reference numerals:

[0053] Vehicle 1000, air suspension system 100, air path distribution device 10, air path block 1, gas inlet interface 11, exhaust outlet interface 12, air spring interface 13, air storage tank interface 14, atmospheric exhaust interface 15, atmospheric air intake interface 16, air path housing 17, air path cavity 171, fixing column 172, electric control plug 173, limit plate 18, fixing bracket 19, drying tank 2, drying tank inlet 21, drying tank outlet 22, valve core 23, drying cavity 24, first solenoid valve 31, second solenoid valve 32, air spring solenoid valve 33, air storage solenoid valve 34, first fastener 41, second fastener 42, third fastener 43, pressure sensor 5, pump body 20, pump body air inlet 201, pump body air outlet 202, air spring 30, front spring 301, rear spring 302, air storage tank 40, gas inlet pipe 50, gas outlet pipe 60. DETAILED DESCRIPTION

[0054] Embodiments of the present application are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to be used to explain the present application, and should not be construed as limiting the present application.

[0055] In the description of the present application, the terms "first" and "second" are used for descriptive purposes only and are not to be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the features. In the description of the present application, "plurality" means at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0056] Combine the following Figure 1-Figure 24 An air path distribution device 10 , an air suspension system 100 having the air path distribution device 10 , and a vehicle 1000 having the air suspension system 100 according to an embodiment of the present application are described in detail.

[0057] Reference Figure 1-Figure 2 , Figure 4-Figure 6 , Figure 8 As shown, the gas path distribution device 10 according to an embodiment of the present application may include a gas path block 1 and a drying tank 2 .

[0058] Among them, the gas circuit block 1 has an air circuit cavity 171, and the gas circuit block 1 has a gas inlet interface 11, an exhaust outlet interface 12 and an atmospheric exhaust interface 15. The gas inlet interface 11, the exhaust outlet interface 12 and the atmospheric exhaust interface 15 are all connected to the gas circuit cavity 171. The gas inlet interface 11 is used to connect to the air outlet 202 of the pump body 20, the exhaust outlet interface 12 is used to connect to the air inlet 201 of the pump body 20, and the atmospheric exhaust interface 15 is connected to the outside atmosphere.

[0059] The drying tank 2 is installed on the gas circuit block 1 . The drying tank 2 has a drying chamber 24 . The drying chamber 24 is communicated with the gas circuit chamber 171 .

[0060] Specifically, the gas path distribution device 10 is often used in the air suspension system 100. When the gas path distribution device 10 is connected to the pump body 20, the gas inlet interface 11 is connected to the gas outlet 202 of the pump body 20, and the exhaust outlet interface 12 is connected to the gas inlet 201 of the pump body 20. The gas compressed by the pump body 20 enters the gas path cavity 171 through the gas outlet 202 and the gas inlet interface 11 of the pump body 20, and the gas in the gas path cavity 171 further enters the drying chamber 24 for drying to remove the moisture carried in the gas. After being dried by the drying tank 2, the gas enters the gas path cavity 171 again, and is then distributed to other components (such as the gas storage tank 40 and the air spring 30). When the entire system needs to be exhausted, the gas is discharged into the atmosphere through the atmospheric exhaust interface 15 on the gas path block 1, without returning to the pump body 20 again, so that there is no need to open an exhaust port on the pump body 20. At the same time, the drying tank 2 is installed on the gas path block 1 instead of the pump body 20, so that the structure of the pump body 20 is simple.

[0061] exist Figure 8 In the example shown, the gas inlet port 11 is connected to the gas outlet 202 of the pump body 20 through the gas inlet pipe 50, and the exhaust outlet port 12 is connected to the gas inlet 201 of the pump body 20 through the gas outlet pipe 60. The gas compressed by the pump body 20 enters the gas path cavity 171 through the gas outlet 202 of the pump body 20, the gas inlet pipe 50, and the gas inlet port 11. The gas in the gas path cavity 171 can enter the pump body 20 through the exhaust outlet port 12, the gas outlet pipe 60, and the gas inlet 201 of the pump body 20. By providing the gas inlet pipe 50 and the gas outlet pipe 60, the relative position of the gas path distribution device 10 and the pump body 20 is more flexible, and the gas path distribution device 10 and the pump body 20 do not need to be very close, which is conducive to the rational use of space.

[0062] In the related art, the drying tank is arranged on the pump body, and the exhaust port for exhausting air to the atmosphere is also arranged on the pump body, resulting in a complicated structure of the pump body. According to the gas path distribution device 10 of the embodiment of the present application, by installing the drying tank 2 on the gas path block 1, the gas exhausted from the pump body 20 is directly discharged from the atmospheric exhaust interface 15 after regeneration of the drying tank 2, without returning to the pump body 20 again, and the exhaust port and the installation structure of the drying tank 2 do not need to be arranged on the pump body 20, thereby making the structure of the pump body 20 simple, and further making the gas path control structure composed of the gas path distribution device 10 and the pump body 20 relatively centralized and simple.

[0063] In some embodiments of the present application, reference Figure 2As shown, the drying tank 2 has a drying tank inlet 21 and a drying tank outlet 22, and both the drying tank inlet 21 and the drying tank outlet 22 are connected to the drying chamber 24 and the gas path chamber 171. In other words, the drying tank inlet 21 is connected to the drying chamber 24 and the gas path chamber 171, and the drying tank outlet 22 is also connected to the drying chamber 24 and the gas path chamber 171. The drying tank inlet 21 is plug-matched with the gas path block 1, and the drying tank outlet 22 is plug-matched with the gas path block 1. The drying tank 2 is directly plug-connected with the gas path block 1, so that the structure of the drying tank 2 and the gas path block 1 is compact. At the same time, there is no need to set a mounting structure of the drying tank 2 on the pump body 20, thereby making the structure of the pump body 20 simple.

[0064] In some embodiments of the present application, a sealing ring is provided at the mating joint between the drying tank inlet 21 and the gas circuit block 1 , and the sealing ring can seal the mating joint between the drying tank inlet 21 and the gas circuit block 1 .

[0065] In some embodiments of the present application, a sealing ring is provided at the mating joint between the drying tank outlet 22 and the gas circuit block 1 , and the sealing ring can seal the mating joint between the drying tank outlet 22 and the gas circuit block 1 .

[0066] Optionally, the sealing ring may be a rubber ring, a silicone ring, etc.

[0067] The plug-in fit between the drying tank 2 and the gas circuit block 1 may be that a part of the drying tank 2 extends into the gas circuit block 1 , or a part of the gas circuit block 1 extends into the drying tank 2 .

[0068] For example, in some embodiments of the present application, the drying tank 2 includes a drying shell, a first drying tank sleeve and a second drying tank sleeve, the first drying tank sleeve and the second drying tank sleeve are both connected to the drying shell, the drying tank inlet 21 is configured as a through hole in the first drying tank sleeve, the drying tank outlet 22 is configured as a through hole in the second drying tank sleeve, the first drying tank sleeve and the second drying tank sleeve extend into the gas circuit housing 17, thereby reducing the distance between the drying shell and the gas circuit housing 17, saving the arrangement space of the drying tank 2 and the gas circuit block 1.

[0069] Optionally, sealing rings are provided between the first sleeve of the drying tank and the gas circuit housing 17 , and between the second sleeve of the drying tank and the gas circuit housing 17 , so as to seal the mating joints between the drying tank 2 and the gas circuit block 1 .

[0070] As another example, in some other embodiments of the present application, the gas circuit block 1 has a first gas circuit sleeve and a second gas circuit sleeve, both of which are connected to the gas circuit housing 17, the first gas circuit sleeve extends into the drying tank inlet 21, and the second gas circuit sleeve extends into the drying tank outlet 22, thereby reducing the distance between the gas circuit housing 17 and the drying tank 2, saving the arrangement space of the drying tank 2 and the gas circuit block 1.

[0071] Optionally, sealing rings are provided between the first sleeve of the gas circuit and the inlet 21 of the drying tank, and between the second sleeve of the gas circuit and the outlet 22 of the drying tank, so as to seal the mating joints between the drying tank 2 and the gas circuit block 1 .

[0072] In some embodiments of the present application, reference Figure 1-Figure 5 and Figure 7-Figure 10 As shown, the gas path distribution device 10 also includes: a first solenoid valve 31, which is arranged at the gas inlet interface 11, and the first solenoid valve 31 is an exhaust solenoid valve. When the first solenoid valve 31 is opened, the atmospheric exhaust interface 15 is connected with the gas path cavity 171, and the gas entering the gas inlet interface 11 through the gas outlet 202 of the pump body 20 is discharged from the atmospheric exhaust interface 15 to the atmosphere through the first solenoid valve 31; when the first solenoid valve 31 is closed, the atmospheric exhaust interface 15 is isolated from the gas path cavity 171, and the gas outlet 202 of the pump body 20 is directly connected to the gas path cavity 171 through the gas inlet interface 11. In other words, after the gas comes in from the gas inlet interface 11, the first solenoid valve 31 is opened and the gas is discharged from the atmospheric exhaust interface 15, and the first solenoid valve 31 is not opened and the gas is not discharged from the atmospheric exhaust interface 15, but flows to the drying chamber 24.

[0073] In some embodiments of the present application, reference Figure 1-Figure 5 and Figure 7-Figure 8 As shown, the gas path distribution device 10 further includes: a second solenoid valve 32 is disposed at the exhaust outlet port 12 , and the second solenoid valve 32 is used to open or close the exhaust outlet port 12 .

[0074] When the second solenoid valve 32 opens the exhaust outlet port 12, the air inlet 201 of the pump body 20 can be connected to the air path cavity 171 through the exhaust outlet port 12; when the second solenoid valve 32 closes the exhaust outlet port 12, the air inlet 201 of the pump body 20 is isolated from the air path cavity 171, that is, the air inlet 201 of the pump body 20 cannot be connected to the air path cavity 171. By setting the second solenoid valve 32, the connection or isolation between the air inlet 201 of the pump body 20 and the air path cavity 171 can be controlled.

[0075] In some embodiments of the present application, reference Figure 1-Figure 3 and Figure 8-Figure 10 As shown, the air circuit block 1 further has an air spring interface 13 , which is used to connect the air spring 30 , and the air spring interface 13 is in communication with the air circuit cavity 171 .

[0076] Optionally, the number of air spring interfaces 13 is at least one, for example Figure 1-Figure 2 , Figure 5 , Figure 8-Figure 10In the example, the number of air spring interfaces 13 is four, and each air spring interface 13 is connected to an air spring 30. The air springs 30 correspond one to one with the air spring interfaces 13. When the number of air spring interfaces 13 is large, the number of air springs 30 is also large, so that the air springs 30 can be arranged at different positions of the vehicle body to adjust the vehicle body height at the corresponding position.

[0077] In some embodiments of the present application, reference Figure 1-Figure 3 and Figure 7-Figure 8 As shown, the air path distribution device 10 further includes: an air spring solenoid valve 33, which is disposed at the air spring interface 13 and is used to open or close the corresponding air spring interface 13. When the air spring solenoid valve 33 opens the air spring interface 13, the air spring 30 can communicate with the air path cavity 171; when the air spring solenoid valve 33 closes the air spring interface 13, the air spring 30 cannot communicate with the air path cavity 171.

[0078] In some embodiments of the present application, reference Figure 1-Figure 2 , Figure 5 and Figure 8-Figure 10 As shown, the gas circuit block 1 also has a gas tank interface 14, which is used to connect the gas tank 40, and the gas tank interface 14 is connected to the gas circuit cavity 171. The gas in the gas circuit cavity 171 can enter the gas tank 40 through the gas tank interface 14, and the gas in the gas tank 40 can enter the gas circuit cavity 171 through the gas tank interface 14.

[0079] In some embodiments of the present application, reference Figure 1-Figure 5 and Figure 7-Figure 8 As shown, a gas storage solenoid valve 34 is provided at the gas storage tank interface 14, and the gas storage solenoid valve 34 is used to open or close the gas storage tank interface 14. When the gas storage solenoid valve 34 opens the gas storage tank interface 14, the gas storage tank 40 can be connected with the gas path cavity 171; when the gas storage solenoid valve 34 closes the gas storage tank interface 14, the gas storage tank 40 cannot be connected with the gas path cavity 171. By providing the gas storage solenoid valve 34, the connection or isolation between the gas storage tank 40 and the gas path cavity 171 can be controlled.

[0080] The second solenoid valve 32 is a boost solenoid valve. When the second solenoid valve 32 and the gas storage solenoid valve 34 are opened, the air inlet 201 of the pump body 20 and the gas storage tank 40 are connected to the gas path cavity 171, so that the gas in the gas storage tank 40 returns to the pump body 20 and is compressed again.

[0081] In some embodiments of the present application, reference Figure 3-Figure 4 and Figure 7As shown, the gas circuit block 1 includes a gas circuit housing 17, a limiting plate 18 and a fixing bracket 19, a gas circuit cavity 171 is formed in the gas circuit housing 17, the limiting plate 18 is located in the gas circuit cavity 171, and the limiting plate 18 is installed on the gas circuit housing 17, and the fixing bracket 19 presses the first solenoid valve 31, the second solenoid valve 32, the air spring solenoid valve 33 and the gas storage solenoid valve 34 against the limiting plate 18. Figure 7 As shown, the coil 311 of the first solenoid valve 31, the coil 321 of the second solenoid valve 32, the coil 331 of the air spring solenoid valve 33 and the coil 341 of the gas storage solenoid valve 34 are installed on the limit plate 18. Specifically, the fixing bracket 19 installs each coil on the limit plate 18. The end of the fixing bracket 19 presses the limit plate 18 to strengthen the installation effect of the first solenoid valve 31, the second solenoid valve 32, the air spring solenoid valve 33 and the gas storage solenoid valve 34, and prevent the solenoid valve from being displaced by air pressure during the ventilation process to cause leakage or fall off.

[0082] In some embodiments of the present application, the air circuit housing 17 is a plastic injection-molded housing with low cost. The limit plate 18 is a metal plate, so that the limit plate 18 has high strength and rigidity, so that the limit plate 18 can support the electromagnetic valve, the second electromagnetic valve 32 and the air spring electromagnetic valve 33 more stably.

[0083] In some embodiments of the present application, reference Figure 3 and Figure 7 As shown, the first solenoid valve 31, the second solenoid valve 32, the air spring solenoid valve 33 and the gas storage solenoid valve 34 are located on the same side of the limit plate 18. Therefore, it is convenient to install, repair or disassemble the first solenoid valve 31, the second solenoid valve 32, the air spring solenoid valve 33 and the gas storage solenoid valve 34 on the same side of the limit plate 18, which is convenient for operation and management.

[0084] In some embodiments of the present application, the first solenoid valve 31, the second solenoid valve 32, the air spring solenoid valve 33 and the gas storage solenoid valve 34 are controlled by the same circuit board. As a result, the structure design of the gas path distribution device 10 is centralized and the control is simplified, which is conducive to reducing the external wiring harness, making the structure compact and greatly reducing the number of circuit boards.

[0085] In some embodiments of the present application, reference Figure 4 and Figure 7 As shown, the gas circuit distribution device 10 further includes a first fastener 41 and a second fastener 42, wherein the first fastener 41 is used to connect the limit plate 18 and the gas circuit housing 17, thereby achieving a fixed connection between the limit plate 18 and the gas circuit housing 17. The gas circuit housing 17 includes a fixing column 172, and the second fastener 42 is used to connect the fixing bracket 19 and the fixing column 172, thereby achieving a fixed connection between the fixing bracket 19 and the gas circuit housing 17.

[0086] Optionally, the first fastener 41 is a bolt or a screw. Figure 4 In the example shown, the first fastener 41 is a self-tapping screw, a light hole is provided on the limiting plate 18, and the gas circuit housing 17 has an internal threaded hole. The first fastener 41 passes through the light hole and is fastened to the internal threaded hole.

[0087] Optionally, the number of the first fastener 41 may be one or more. Figure 7 In the example shown, there are three first fasteners 41 , which are distributed at three vertices of a triangle, thereby making the connection between the limiting plate 18 and the gas circuit housing 17 firm and reliable.

[0088] Optionally, the second fastener 42 is a bolt or a screw. Figure 4 In the example shown, the second fastener 42 is a self-tapping screw, a light hole is provided on the fixing bracket 19, and the fixing column 172 has an internal threaded hole. The second fastener 42 passes through the light hole and is fastened to the internal threaded hole.

[0089] Optionally, the number of the second fastener 42 may be one or more. Figure 7 In the example shown, there are four second fasteners 42 , which are distributed at four vertices of a quadrilateral, thereby making the connection between the fixing bracket 19 and the gas circuit housing 17 firm and reliable.

[0090] In some embodiments of the present application, reference Figure 1-Figure 2 , Figure 5 , Figure 8 As shown, the gas circuit block 1 also has an atmospheric air inlet interface 16, and the atmospheric air inlet interface 16 is suitable for being connected to the gas circuit cavity 171 and the external atmosphere.

[0091] In some embodiments of the present application, the atmospheric air inlet interface 16 is not provided with a solenoid valve and is directly connected to the outside atmosphere.

[0092] In some embodiments of the present application, at least one of the gas inlet interface 11, the exhaust outlet interface 12, the air spring interface 13, the gas tank interface 14, the atmospheric exhaust interface 15, and the atmospheric intake interface 16 protrudes outward from the outer surface of the gas circuit housing 17, thereby facilitating the connection of the protruding interface to the pipeline. Figure 1 In the example, the gas inlet interface 11, the exhaust outlet interface 12, the air spring interface 13, the gas tank interface 14, the atmospheric exhaust interface 15, and the atmospheric air inlet interface 16 all protrude outward from the outer surface of the gas circuit housing 17.

[0093] In some embodiments of the present application, reference Figure 2As shown, the gas path distribution device 10 also includes a valve core 23, which is installed at the drying tank outlet 22, and the valve core 23 is used to control the reverse flow at the drying tank outlet 22. The valve core 23 is a mechanical structural component, which can make the forward flow at the drying tank outlet 22 unaffected and the reverse flow smaller. The function of reducing the flow is mainly to dry the moisture in the drying chamber 24 through the pressure difference. It can be understood that at the drying tank outlet 22, "forward" refers to the direction from the drying chamber 24 through the drying tank outlet 22 to the gas path cavity 171, and "reverse" refers to the direction from the gas path cavity 171 through the drying tank outlet 22 to the drying chamber 24. In this way, when the medium at the drying tank outlet 22 flows in the reverse direction, there is always a flow at the drying tank outlet 22.

[0094] In some embodiments of the present application, reference Figure 2 As shown, the gas circuit distribution device 10 further includes a third fastener 43, which is used to connect the drying tank 2 and the gas circuit housing 17. Specifically, the drying tank 2 is plug-connected with the gas circuit block 1, and the drying tank 2 is tightened and fixed to the gas circuit block 1 by two third fasteners 43.

[0095] In some embodiments of the present application, reference Figure 1 , Figure 3-Figure 6 As shown, the gas path distribution device 10 further includes a pressure sensor 5 , which is mounted on the gas path housing 17 , and is used to detect the pressure in the gas path cavity 171 .

[0096] In some embodiments of the present application, reference Figure 1 As shown, the gas path distribution device 10 further includes an electric control plug 173, and the electric control plug 173 is used to connect to an electric control device (such as a power supply, a controller, etc.).

[0097] Reference Figure 8-Figure 10 As shown, according to another embodiment of the present application, the air suspension system 100 includes a pump body 20 and the air path distribution device 10 of the above embodiment, the gas inlet interface 11 is connected to the air outlet 202 of the pump body 20, and the exhaust outlet interface 12 is connected to the air inlet 201 of the pump body 20.

[0098] According to the air suspension system 100 of the embodiment of the present application, the air path distribution device 10 thereof installs the drying tank 2 on the air path block 1, so that the gas exhausted from the pump body 20 is directly discharged from the atmospheric exhaust interface 15 after being regenerated by the drying tank 2, without returning to the pump body 20 again. The pump body 20 does not need to be provided with an exhaust port and an installation structure of the drying tank 2, thereby making the structure of the pump body 20 simple, and further making the air path control structure composed of the air path distribution device 10 and the pump body 20 relatively centralized and simple.

[0099] In some embodiments of the present application, reference Figure 9-10As shown, the air suspension system 100 further includes an air spring 30 , and the air spring interface 13 of the air circuit block 1 is connected to the corresponding air spring 30 .

[0100] In some embodiments of the present application, reference Figure 9-10 As shown, the air suspension system 100 further includes an air tank 40 , and the air tank interface 14 of the air circuit block 1 is connected to the air tank 40 .

[0101] The gas compressed by the pump body 20 enters the gas path cavity 171 through the gas inlet interface 11, and then passes through the drying tank 2 for drying. The dry gas is controlled to go to the gas storage tank 40 through the gas storage solenoid valve 34, and to go to the corresponding air spring 30 through the air spring solenoid valve 33. When the air spring 30 needs to descend and exhaust, the corresponding air spring solenoid valve 33 opens, and the gas flows back from the air spring 30 through the drying tank 2 again to back-blow and regenerate the molecular sieve in the drying tank 2. At the same time, the first solenoid valve 31 needs to be opened, and the gas is discharged from the atmospheric exhaust interface 15.

[0102] Fig. 9 is a schematic diagram of a closed air circuit principle of an air suspension system 100 according to an embodiment of the present application, Fig.10 This is a schematic diagram of the open air circuit principle of an air suspension system 100 according to another embodiment of the present application. The closed air circuit can realize internal circulation of gas without external air intake; the air spring 30 of the open air circuit can only exhaust gas to the atmosphere, and cannot be compressed back to the air storage tank 40 by the pump body 20, and the gas cannot be recycled internally.

[0103] Figure 11-Figure 23 A schematic diagram of the air flow direction of the closed air circuit of the air suspension system according to the embodiment of the present application under thirteen working conditions is shown. There are four air springs 30, two front springs 301 and two rear springs 302, wherein:

[0104] Fig.11 The gas flow direction of the closed gas circuit is atmosphere → pump body 20 → front spring 301;

[0105] Fig.12 The gas flow direction of the closed gas circuit is atmosphere → pump body 20 → rear spring 302;

[0106] Fig.13 The gas flow direction of the closed gas circuit is atmosphere → pump body 20 → gas storage tank 40;

[0107] Fig.14 The gas flow direction of the middle closed gas circuit is gas storage tank 40 → front spring 301;

[0108] Fig.15 The gas flow direction of the middle closed gas circuit is gas storage tank 40 → rear spring 302;

[0109] Fig.16The gas flow direction of the closed gas circuit is gas storage tank 40 → pump body 20 → front spring 301;

[0110] Fig.17 The gas flow direction of the middle closed gas circuit is gas storage tank 40 → pump body 20 → rear spring 302;

[0111] Fig.18 The gas flow direction of the closed gas circuit is front spring 301 → drying tank 2 → atmosphere;

[0112] Fig.19 The gas flow direction of the closed gas circuit is rear spring 302 → drying tank 2 → atmosphere;

[0113] Fig. 20 The gas flow direction of the closed gas circuit is gas storage tank 40 → drying tank 2 → atmosphere;

[0114] Fig.21 The gas flow direction of the closed gas circuit is atmosphere → pump body 20 → atmosphere;

[0115] Fig. 22 The gas flow direction of the closed gas circuit is front spring 301 → pump body 20 → gas storage tank 40;

[0116] Fig.23 The gas flow direction of the closed middle gas circuit is rear spring 302 → pump body 20 → gas storage tank 40 .

[0117] Of course, in other optional embodiments, the closed air circuit of the air suspension system 100 can also be other working conditions, such as only one of the front springs 301 participating in the air circuit circulation, or only one of the rear springs 302 participating in the air circuit circulation, etc., which are not listed one by one here.

[0118] Similarly, refer to Fig.10 According to the embodiment of the present application, the open air circuit of the air suspension system has at least eleven working conditions, namely, atmosphere → pump body 20 → front spring 301, atmosphere → pump body 20 → rear spring 302, atmosphere → pump body 20 → air tank 40, air tank 40 → front spring 301, the air circuit flow direction is air tank 40 → rear spring 302, air tank 40 → pump body 20 → front spring 301, air tank 40 → pump body 20 → rear spring 302, front spring 301 → drying tank 2 → atmosphere, rear spring 302 → drying tank 2 → atmosphere, air tank 40 → drying tank 2 → atmosphere, atmosphere → pump body 20 → atmosphere. The air circuit flow diagram of these eleven working conditions is as follows: Figure 11-Figure 21 Similar, they are not shown one by one here.

[0119] Reference Fig.24 As shown, a vehicle 1000 according to yet another embodiment of the present application includes the air suspension system 100 of the above embodiment.

[0120] According to the vehicle 1000 of the embodiment of the present application, the air path distribution device 10 of the air suspension system 100 installs the drying tank 2 on the air path block 1, so that the gas discharged from the pump body 20 is directly discharged from the atmospheric exhaust interface 15 after being regenerated by the drying tank 2, without returning to the pump body 20 again. There is no need to set an exhaust port and an installation structure of the drying tank 2 on the pump body 20, thereby making the structure of the pump body 20 simple, and further making the air path control structure composed of the air path distribution device 10 and the pump body 20 relatively centralized and simple.

[0121] In the description of the present application, it should be understood that the terms "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present application.

[0122] In this application, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection, an electrical connection, or can communicate with each other; it can be a direct connection, or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0123] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example" or "some examples" etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present application. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine different embodiments or examples described in this specification.

[0124] Although the embodiments of the present application have been shown and described above, it can be understood that the above embodiments are exemplary and cannot be understood as limitations on the present application. Ordinary technicians in this field can change, modify, replace and modify the above embodiments within the scope of the present application.

Claims

1. A gas distribution device, characterized in that: include: An air circuit block, wherein the air circuit block has an air circuit cavity, the air circuit block has a gas inlet interface, an exhaust outlet interface and an atmospheric exhaust interface, the gas inlet interface, the exhaust outlet interface and the atmospheric exhaust interface are all connected to the air circuit cavity, the gas inlet interface is used to connect to the air outlet of the pump body, the exhaust outlet interface is used to connect to the air inlet of the pump body, and the atmospheric exhaust interface is connected to the outside atmosphere; and A drying tank is installed on the gas path block, and the drying tank has a drying cavity, which is communicated with the gas path cavity.

2. The gas path distribution device according to claim 1, characterized in that: The drying tank has a drying tank inlet and a drying tank outlet, both of which are connected to the drying chamber and the gas path chamber, the drying tank inlet is plugged into the gas path block, and the drying tank outlet is plugged into the gas path block.

3. The gas path distribution device according to claim 2, characterized in that: A sealing ring is provided at the mating position between the inlet of the drying tank and the gas circuit block; and / or a sealing ring is provided at the mating position between the outlet of the drying tank and the gas circuit block.

4. The gas path distribution device according to any one of claims 1 to 3, characterized in that: The gas path distribution device also includes: a first solenoid valve, wherein the first solenoid valve is arranged at the gas inlet interface, and when the first solenoid valve is opened, the atmospheric exhaust interface is communicated with the gas path cavity, and the gas entering the gas inlet interface through the gas outlet of the pump body is discharged from the atmospheric exhaust interface to the atmosphere through the first solenoid valve; when the first solenoid valve is closed, the atmospheric exhaust interface is isolated from the gas path cavity, and the gas outlet of the pump body is directly communicated with the gas path cavity through the gas inlet interface; and A second solenoid valve, the second solenoid valve is arranged at the exhaust outlet interface, and the second solenoid valve is used to open or close the exhaust outlet interface, when the second solenoid valve is opened, the air inlet of the pump body is connected to the air path cavity through the exhaust outlet interface; when the second solenoid valve is closed, the air inlet of the pump body is isolated from the air path cavity.

5. The gas path distribution device according to claim 4, characterized in that: The air circuit block also has at least one air spring interface, which is used to connect an air spring and is communicated with the air circuit cavity.

6. The gas path distribution device according to claim 5, characterized in that: The air path distribution device further includes: an air spring solenoid valve, which is arranged at the air spring interface and is used to open or close the corresponding air spring interface.

7. The gas path distribution device according to claim 6, characterized in that: The gas circuit block also has a gas tank interface for connecting to a gas tank, and the gas tank interface is communicated with the gas circuit cavity.

8. The gas path distribution device according to claim 7, characterized in that: The gas storage tank interface is provided with a gas storage solenoid valve for opening or closing the gas storage tank interface.

9. The gas path distribution device according to claim 8, characterized in that: The air circuit block includes an air circuit housing, a limit plate and a fixed bracket, the air circuit cavity is formed in the air circuit housing, the limit plate is located in the air circuit cavity, and the limit plate is installed on the air circuit housing, and the fixed bracket presses the first solenoid valve, the second solenoid valve, the air spring solenoid valve and the air storage solenoid valve against the limit plate.

10. The gas path distribution device according to claim 9, characterized in that: The first solenoid valve, the second solenoid valve, the air spring solenoid valve and the air storage solenoid valve are located on the same side of the limiting plate.

11. The gas path distribution device according to claim 9, characterized in that: The first solenoid valve, the second solenoid valve, the air spring solenoid valve and the air storage solenoid valve are controlled by the same circuit board.

12. The gas path distribution device according to claim 9, characterized in that: The gas path distribution device further comprises a first fastener and a second fastener, wherein the first fastener is used to connect the limit plate and the gas path housing, the gas path housing comprises a fixing column, and the second fastener is used to connect the fixing bracket and the fixing column.

13. The gas path distribution device according to claim 8, characterized in that: The second solenoid valve is a boost solenoid valve. When the second solenoid valve and the gas storage solenoid valve are opened, the air inlet of the pump body and the gas storage tank are connected to the gas path cavity, so that the gas in the gas storage tank returns to the pump body and is compressed again.

14. The gas path distribution device according to claim 1, characterized in that: The gas circuit block also has an atmospheric air intake interface, and the atmospheric air intake interface is suitable for being connected to the gas circuit cavity and the external atmosphere.

15. An air suspension system, characterized in that: include: The gas path distribution device according to any one of claims 1 to 14; and The pump body, the gas inlet interface is connected to the gas outlet of the pump body, and the exhaust outlet interface is connected to the gas inlet of the pump body.

16. The air suspension system according to claim 15, characterized in that: The air suspension system also includes an air spring, and the air spring interface of the air circuit block is connected to the corresponding air spring.

17. The air suspension system according to claim 15, characterized in that: The air suspension system also includes an air tank, and the air tank interface of the air circuit block is connected to the air tank.

18. A vehicle, characterized in that: An air suspension system comprising any one of claims 15-17.

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