Vehicle suspension and vehicle

Abstract

This application provides a vehicle suspension and a vehicle, comprising: a frame; a front airbag assembly including a first airbag and a second airbag, the first and second airbags being disposed on both sides of the front end of the frame; a rear airbag assembly including a third airbag and a fourth airbag, the third and fourth airbags being disposed on both sides of the rear end of the frame; airflow pipes connected to the first, second, third, and fourth airbags respectively, for supplying or venting air to the first, second, third, and fourth airbags; and a valve assembly disposed in the airflow pipes for controlling the connection and disconnection between the first and second airbags, between the third and fourth airbags, and between the front and rear airbag assemblies. With the above configuration, when the vehicle is in adverse road conditions, the left and right airflow paths of the front and / or rear airbag assemblies are connected to achieve left-right linkage balance, improving the stability of the vehicle during driving.

Description

Technical Field

[0001] This application relates to the field of vehicle frames, and more particularly to a vehicle suspension and a vehicle. Background Technology

[0002] In related technologies, the left and right airbags on the front and rear axles of the vehicle frame are independent and cannot be connected, thus the vehicle frame is in a four-point support state. On some road surfaces, one tire may be suspended in the air, which is detrimental to the stability of the vehicle during driving. Summary of the Invention

[0003] This application provides a vehicle suspension and a vehicle that improves vehicle stability during driving.

[0004] In a first aspect, this application provides a vehicle suspension, comprising:

[0005] Frame;

[0006] The front airbag assembly includes a first airbag and a second airbag, which are disposed on both sides of the front end of the frame.

[0007] The rear airbag assembly includes a third airbag and a fourth airbag, which are disposed on both sides of the rear end of the frame.

[0008] An airflow duct is connected to the first airbag, the second airbag, the third airbag, and the fourth airbag respectively, and is used to introduce or exhaust air into the first airbag, the second airbag, the third airbag, and the fourth airbag;

[0009] A valve assembly, disposed in the airflow duct, is used to control the connection and disconnection between the first airbag and the second airbag, between the third airbag and the fourth airbag, and between the front airbag assembly and the rear airbag assembly.

[0010] The above configuration allows the first and second airbags of the front airbag assembly to be interconnected or disconnected; similarly, the third and fourth airbags of the rear airbag assembly can be interconnected or disconnected. When the first and second airbags are interconnected, and the third and fourth airbags are interconnected, the vehicle suspension operates in a two-point support mode. The left and right air passages of the front and rear airbag assemblies are connected, achieving left-right balance and mitigating imbalance caused by one side of the vehicle being suspended on twisting roads. When the first and second airbags are disconnected, and the third and fourth airbags are interconnected, the vehicle suspension operates in a three-point positioning mode (two points in front, one point in the rear), mitigating imbalance caused by one side of the vehicle being suspended on twisting roads, suitable for unloaded or lightly loaded vehicles. When the first and second airbags are interconnected, and the third and fourth airbags are disconnected, the vehicle suspension operates in a three-point support mode (one point in front, two points in the rear), mitigating imbalance caused by one side of the vehicle being suspended on twisting roads, suitable for heavily loaded vehicles. When the first and second airbags disconnect from each other, and the third and fourth airbags disconnect from each other, the vehicle suspension is in a four-point support mode, which helps to improve the roll stiffness of the front and rear axle frames at high speeds. Through the above settings, when the vehicle is on a rough road, the left and right air passages of the front airbag assembly and / or rear airbag assembly are connected to achieve left and right linkage balance, improving the stability of the vehicle during driving.

[0011] Optional, the airflow duct includes:

[0012] The system includes a main air line, an intake air line, and an exhaust air line, wherein the main air line is connected to the first airbag, the second airbag, the third airbag, and the fourth airbag, respectively.

[0013] An air intake pipe, connected to the main pipe, is used to supply air to the first airbag, the second airbag, the third airbag, and the fourth airbag;

[0014] An exhaust pipe, connected to the main pipe, is used to exhaust air to the first airbag, the second airbag, the third airbag, and the fourth airbag;

[0015] The valve assembly is located in the main pipeline.

[0016] Optionally, the main pipeline includes:

[0017] Intermediate piping;

[0018] The first branch connects the first airbag to the intermediate tube;

[0019] The second branch connects the second airbag to the intermediate tube;

[0020] The third branch connects the third airbag to the intermediate tube;

[0021] The fourth branch connects the fourth airbag to the intermediate pipeline;

[0022] The valve assembly includes:

[0023] A first isolation valve is installed in the intermediate pipeline;

[0024] The second isolation valve is installed in the first branch;

[0025] The third isolation valve is located in the second branch;

[0026] The fourth isolation valve is located in the third branch;

[0027] The fifth isolation valve is located in the fourth branch;

[0028] When the first isolation valve is closed, the front airbag assembly is disconnected from the rear airbag assembly; when the first isolation valve is open, the front airbag assembly is connected to the rear airbag assembly.

[0029] When both the second and third isolation valves are open, the first airbag and the second airbag are connected; when either the second or third isolation valve is closed, the first and second airbags are disconnected.

[0030] When both the fourth and fifth isolation valves are open, the third airbag and the fourth airbag are connected; when either the fourth or fifth isolation valve is closed, the third airbag and the fourth airbag are disconnected.

[0031] Optional, including:

[0032] The first sensor is installed in the air intake pipe;

[0033] The second sensor is located in the first branch;

[0034] The third sensor is located in the second branch;

[0035] The fourth sensor is located in the third branch;

[0036] The fifth sensor is located in the fourth branch.

[0037] Optionally, the main pipeline includes:

[0038] Intermediate piping;

[0039] A first front airbag branch connected to the intermediate pipeline, one end of the first front airbag branch being connected to the first airbag, and the other end of the first front airbag branch being connected to the second airbag.

[0040] A first rear airbag branch is connected to the intermediate pipeline, one end of the first rear airbag branch is connected to the third airbag, and the other end of the first rear airbag branch is connected to the fourth airbag.

[0041] The valve assembly includes:

[0042] A sixth isolation valve is disposed at the connection between the first front airbag branch and the intermediate pipeline; the sixth isolation valve includes an openable and closable first connection end, an openable and closable second connection end, and an openable and closable third connection end; the first connection end is connected to the intermediate pipeline, the second connection end is connected to the first airbag, and the third connection end is connected to the second airbag.

[0043] A seventh isolation valve is provided at the connection between the first rear airbag branch and the intermediate pipeline; the seventh isolation valve includes an openable and closable fourth connection end, an openable and closable fifth connection end and an openable and closable sixth connection end, the fourth connection end is connected to the intermediate pipeline, the fifth connection end is connected to the third airbag, and the sixth connection end is connected to the fourth airbag.

[0044] When the second connecting end is connected to the third connecting end, the first airbag and the second airbag are in communication; when the second connecting end is disconnected from the third connecting end, the first airbag and the second airbag are disconnected.

[0045] When the fifth connecting end is connected to the sixth connecting end, the third airbag and the fourth airbag are in communication; when the fifth connecting end is disconnected from the sixth connecting end, the third airbag and the fourth airbag are disconnected.

[0046] Optional, including:

[0047] The second front airbag branch has one end connected to the first airbag and the other end connected to the second airbag.

[0048] The second rear airbag branch has one end connected to the third airbag and the other end connected to the fourth airbag.

[0049] The valve assembly includes:

[0050] An eighth isolation valve is provided in the branch of the second front airbag; when the eighth isolation valve is closed, the first airbag is disconnected from the second airbag; when the eighth isolation valve is open, the first airbag is connected to the second airbag.

[0051] A ninth isolation valve is provided in the second rear airbag branch; when the ninth isolation valve is closed, the third airbag is disconnected from the fourth airbag; when the ninth isolation valve is open, the third airbag is connected to the fourth airbag.

[0052] Optionally, the main pipeline includes:

[0053] Intermediate piping;

[0054] The first branch connects the first airbag to the intermediate tube;

[0055] The second branch connects the second airbag to the intermediate tube;

[0056] The third branch connects the third airbag to the intermediate tube;

[0057] The fourth branch connects the fourth airbag to the intermediate pipeline;

[0058] The valve assembly includes:

[0059] The second isolation valve is installed in the first branch;

[0060] The third isolation valve is located in the second branch;

[0061] The fourth isolation valve is located in the third branch;

[0062] The fifth isolation valve is located in the fourth branch.

[0063] Optionally, the main pipeline includes an intermediate pipeline; the valve assembly includes a tenth isolation valve, which includes an openable and closable seventh connection end, an openable and closable eighth connection end, an openable and closable ninth connection end, an openable and closable tenth connection end, and an intermediate connection end.

[0064] The seventh connection end is connected to the first airbag; the eighth connection end is connected to the second airbag; the ninth connection end is connected to the third airbag; the tenth connection end is connected to the fourth airbag; and the intermediate connection end is connected to the intermediate pipeline.

[0065] Optionally, it also includes an air source, an intake valve, and an exhaust valve. One end of the intake pipe is connected to the air source, and the other end of the intake pipe is connected to the main pipe. The intake valve is located in the intake pipe, and the exhaust valve is located in the exhaust pipe.

[0066] Secondly, this application also provides a vehicle that includes the vehicle suspension described in the first aspect.

[0067] When the vehicle is in different road conditions, the left and right air passages of the front airbag assembly and / or rear airbag assembly are connected to achieve left and right linkage balance, which improves the stability of the vehicle during driving, which is beneficial to the safety of the vehicle and the driving experience. Attached Figure Description

[0068] The accompanying drawings, which are incorporated in and form a part of this specification, illustrate embodiments consistent with this disclosure and, together with the description, serve to explain the principles of this disclosure.

[0069] Figure 1 The diagram shown is a schematic representation of an embodiment of the vehicle suspension of this application.

[0070] Figure 2-5 The diagram shown is a schematic of the airbag connection state of the vehicle suspension in this application.

[0071] Figure 6 The diagram shown is a schematic representation of another embodiment of the vehicle suspension of this application.

[0072] Figure 7 The diagram shown is a schematic diagram of yet another embodiment of the vehicle suspension of this application.

[0073] Figure 8 The diagram shown is a schematic diagram of yet another embodiment of the vehicle suspension of this application.

[0074] Explanation of reference numerals in the attached figures:

[0075] Vehicle suspension 100; frame 110; first airbag 121; second airbag 122; third airbag 123; fourth airbag 124; intake pipe 131; intake valve 132; air source 133; exhaust pipe 134; exhaust valve 135; intermediate pipe 141; first branch 142; second branch 143; third branch 144; fourth branch 145; first front airbag branch 146; first rear airbag branch 147; second front airbag branch 148; second rear airbag branch 149; first isolation valve 151; second isolation valve 152; third isolation valve 153; fourth isolation valve 154; fifth isolation valve Cut-off valve 155; Sixth isolation valve 161; First connecting end 1611; Second connecting end 1612; Third connecting end 1613; Seventh isolation valve 162; Fourth connecting end 1621; Fifth connecting end 1622; Sixth connecting end 1623; Eighth isolation valve 171; Ninth isolation valve 172; Tenth isolation valve 181; Seventh connecting end 1811; Eighth connecting end 1812; Ninth connecting end 1813; Tenth connecting end 1814; Intermediate connecting end 1815; First sensor 191; Second sensor 192; Third sensor 193; Fourth sensor 194; Fifth sensor 195;

[0076] Forward and backward direction A. Detailed Implementation

[0077] The technical solutions in the embodiments (or "implementations") of this application will be clearly and completely described herein with reference to the accompanying drawings. When the following description relates to the drawings, unless otherwise indicated, the same numbers in different drawings represent the same or similar elements.

[0078] If the embodiments of this application contain terms relating to directional indications or positional relationships (such as up, down, left, right, front, back, inside, outside, top, bottom, center, vertical, horizontal, longitudinal, transverse, length, width, counterclockwise, clockwise, axial, radial, circumferential, etc.), such terms are only used to explain the relative positional relationships and movements between components in a specific posture (as shown in the attached figures); if the specific posture changes, the directional indications or positional relationships will also change accordingly. Furthermore, the terms "first" and "second" used in the embodiments of this application are only for descriptive convenience and should not be construed as indicating or implying relative importance.

[0079] The vehicle suspension and vehicle of this application will now be described in detail with reference to the accompanying drawings. Unless otherwise specified, the features of the following embodiments and implementations can be combined with each other.

[0080] This application provides a vehicle suspension 100, including a frame 110, a front airbag assembly, a rear airbag assembly, airflow pipes, and a valve assembly. The front airbag assembly includes a first airbag 121 and a second airbag 122, which are disposed on both sides of the front end of the frame 110. The rear airbag assembly includes a third airbag 123 and a fourth airbag 124, which are disposed on both sides of the rear end of the frame 110. The front-rear direction A of the frame 110 corresponds to the vehicle's travel direction. The airflow pipes are connected to the first airbag 121, the second airbag 122, the third airbag 123, and the fourth airbag 124, respectively, for supplying or depressing air to the first airbag 121, the second airbag 122, the third airbag 123, and the fourth airbag 124. The valve assembly is located in the airflow duct and is used to control the connection and disconnection between the first airbag 121 and the second airbag 122, between the third airbag 123 and the fourth airbag 124, and between the front airbag assembly and the rear airbag assembly.

[0081] Through the above configuration, the first airbag 121 and the second airbag 122 of the front airbag assembly can be connected or disconnected; the third airbag 123 and the fourth airbag 124 of the rear airbag assembly can be connected or disconnected. When the first airbag 121 and the second airbag 122 are disconnected, and the third airbag 123 and the fourth airbag 124 are disconnected, the vehicle suspension 100 is in a four-point support mode, which helps to improve the roll stiffness of the front and rear axle frames 110 at high speeds. When the first airbag 121 and the second airbag 122 are disconnected, and the third airbag 123 and the fourth airbag 124 are connected, a three-point positioning method with two points in the front and one point in the rear is formed, which can reduce the imbalance of the whole vehicle with one side suspended in tortuous road sections and is suitable for the vehicle when it is unloaded or lightly loaded. When the first airbag 121 and the second airbag 122 are interconnected, and the third airbag 123 and the fourth airbag 124 are disconnected, the vehicle suspension 100 is in a three-point support mode (one point at the front and two points at the rear). This can reduce the imbalance caused by one side of the vehicle being suspended on twisting road sections, and is suitable for heavy-load conditions. When the first airbag 121 and the second airbag 122 are interconnected, and the third airbag 123 and the fourth airbag 124 are interconnected, the vehicle suspension 100 is in a two-point support mode. The left and right air passages of the front and rear airbag components are connected, achieving left-right linkage balance, which can reduce the imbalance caused by one side of the vehicle being suspended on twisting road sections. Through the above settings, when the vehicle is on a rough road, the left and right air passages of the front and / or rear airbag components are connected to achieve left-right linkage balance, improving the stability of the vehicle during driving.

[0082] See Figure 1 As shown, in an optional embodiment, the airflow conduit includes a main conduit, an intake conduit 131, and an exhaust conduit 134. The main conduit is connected to the first airbag 121, the second airbag 122, the third airbag 123, and the fourth airbag 124, respectively. The intake conduit 131 is connected to the main conduit and is used to supply air to the first airbag 121, the second airbag 122, the third airbag 123, and the fourth airbag 124. The exhaust conduit 134 is connected to the main conduit and is used to exhaust air from the first airbag 121, the second airbag 122, the third airbag 123, and the fourth airbag 124. A valve assembly is disposed on the main conduit.

[0083] The valve assembly controls the main pipeline to connect simultaneously to any one of the first airbag 121, second airbag 122, third airbag 123, or fourth airbag 124. The intake pipeline 131 allows air to be introduced into any one of the first airbag 121, second airbag 122, third airbag 123, or fourth airbag 124, and the exhaust pipeline 134 allows air to be exhausted from any one of the first airbag 121, second airbag 122, third airbag 123, or fourth airbag 124. This configuration simplifies the airflow pipeline structure, simplifies the vehicle suspension 100 structure, and facilitates the manufacturing of the vehicle suspension 100.

[0084] See Figure 1 As shown, in an optional embodiment, the main pipeline includes a central pipeline 141, a first branch 142, a second branch 143, a third branch 144, and a fourth branch 145. The first branch 142 connects the first airbag 121 to the central pipeline 141. The second branch 143 connects the second airbag 122 to the central pipeline 141. The third branch 144 connects the third airbag 123 to the central pipeline 141. The fourth branch 145 connects the fourth airbag 124 to the central pipeline 141. The intake pipeline 131 and the exhaust pipeline 134 are connected to the central pipeline 141.

[0085] The valve assembly includes a first isolation valve 151, a second isolation valve 152, a third isolation valve 153, a fourth isolation valve 154, and a fifth isolation valve 155. The first isolation valve 151 is located in the intermediate pipeline 141; the second isolation valve 152 is located in the first branch pipeline 142; the third isolation valve 153 is located in the second branch pipeline 143; the fourth isolation valve 154 is located in the third branch pipeline 144; and the fifth isolation valve 155 is located in the fourth branch pipeline 145. When the first isolation valve 151 is closed, the front airbag assembly is disconnected from the rear airbag assembly; when the first isolation valve 151 is open, the front airbag assembly is connected to the rear airbag assembly. When the connections of the front airbag assembly, rear airbag assembly, and the intake pipe 131, exhaust pipe 134, and main pipe are sequentially arranged, the first isolation valve 151 opens, connecting the front and rear airbag assemblies, allowing the intake pipe 131 and exhaust pipe 134 to inflate and exhaust the first airbag 121 and / or the second airbag 122 of the front airbag assembly. Correspondingly, when the connections of the rear airbag assembly, front airbag assembly, and the intake pipe 131, exhaust pipe 134, and main pipe are sequentially arranged, the first isolation valve 151 opens, connecting the front and rear airbag assemblies, allowing the intake pipe 131 and exhaust pipe 134 to inflate and exhaust the third airbag 123 and / or the fourth airbag 124 of the rear airbag assembly. Both the second isolation valve 152 and the third isolation valve 153 are open, connecting the first airbag 121 and the second airbag 122. If either the second isolation valve 152 or the third isolation valve 153 is disconnected, the first airbag 121 and the second airbag 122 are disconnected. If both the fourth isolation valve 154 and the fifth isolation valve 155 are open, the third airbag 123 and the fourth airbag 124 are connected; if either the fourth isolation valve 154 or the fifth isolation valve 155 is disconnected, the third airbag 123 and the fourth airbag 124 are disconnected. In this embodiment, the first isolation valve 151, the second isolation valve 152, the third isolation valve 153, the fourth isolation valve 154, and the fifth isolation valve 155 are all on / off valves, specifically pilot solenoid valves or other valves with on / off control functions. The first isolation valve 151, the second isolation valve 152, the third isolation valve 153, the fourth isolation valve 154, and the fifth isolation valve 155 are electrically connected to the controller of the vehicle suspension 100, controlling their switching between connected and disconnected states. This controls the connection / disconnection between the first airbag 121 and the second airbag 122, between the third airbag 123 and the fourth airbag 124, and between the front airbag assembly and the rear airbag assembly. The switching between connected and disconnected states of the first isolation valve 151, the second isolation valve 152, the third isolation valve 153, the fourth isolation valve 154, and the fifth isolation valve 155 facilitates control and simplifies the control method of the vehicle suspension 100.

[0086] See Figure 1As shown, in an optional embodiment, the vehicle suspension 100 includes a first sensor 191, a second sensor 192, a third sensor 193, a fourth sensor 194, and a fifth sensor 195. The first sensor 191 is disposed in the intake manifold 131. The second sensor 192 is disposed in the first branch 142, specifically between the first airbag 121 and the second isolation valve 152. The third sensor 193 is disposed in the second branch 143, specifically between the second airbag 122 and the third isolation valve 153. The fourth sensor 194 is disposed in the third branch 144, specifically between the third airbag 123 and the fourth isolation valve 154. The fifth sensor 195 is disposed in the fourth branch 145, specifically between the fourth airbag 124 and the fifth isolation valve 155. The first sensor 191, the second sensor 192, the third sensor 193, the fourth sensor 194, and the fifth sensor 195 are used to measure the gas pressure during air intake through the intake pipe 131, the gas pressure in the first airbag 121, the gas pressure in the second airbag 122, the gas pressure in the third airbag 123, and the gas pressure in the fourth airbag 124, respectively. Specifically, the first sensor 191, the second sensor 192, the third sensor 193, the fourth sensor 194, and the fifth sensor 195 are electrically connected to the controller of the vehicle suspension 100. The controller of the vehicle suspension 100 acquires the gas pressure information during air intake through the intake pipe 131, the gas pressure information in the first airbag 121, the gas pressure information in the second airbag 122, the gas pressure information in the third airbag 123, and the gas pressure information in the fourth airbag 124, which is beneficial for accurately adjusting the gas pressure of the first airbag 121, the second airbag 122, the third airbag 123, and the fourth airbag 124, thereby improving the stability of the vehicle during driving.

[0087] In an alternative embodiment, the vehicle suspension 100 may also be equipped with a pressure sensor at the connection point of the first branch 142, the second branch 143, and the intermediate pipe 141 to measure the gas pressure in the front airbag assembly. When the first isolation valve 151, the third isolation valve 153, the fourth isolation valve 154, and the fifth isolation valve 155 are closed, and the second isolation valve 152 is open, the pressure sensor measures the gas pressure in the first airbag 121; when the first isolation valve 151, the second isolation valve 152, the fourth isolation valve 154, and the fifth isolation valve 155 are closed, and the third isolation valve 153 is open, the pressure sensor measures the gas pressure in the second airbag 122; when the first isolation valve 151, the second isolation valve 152, the third isolation valve 153, and the fifth isolation valve 155 are closed, the pressure sensor measures the gas pressure in the second airbag 122; when the first isolation valve 151, the second isolation valve 152, the third isolation valve 153, and the fifth isolation valve 155 are closed, the pressure sensor measures the gas pressure in the second airbag 122. When the fourth isolation valve 154 is open, the pressure sensor measures the gas pressure in the third airbag 123; when the first isolation valve 151, second isolation valve 152, third isolation valve 153, and fourth isolation valve 154 are closed, and the fifth isolation valve 155 is open, the pressure sensor measures the gas pressure in the fourth airbag 124; when the second isolation valve 152, third isolation valve 153, fourth isolation valve 154, and fifth isolation valve 155 are closed, and the first isolation valve 151 is open, the pressure sensor measures the gas pressure in the intake pipe 131. This configuration reduces the manufacturing cost of the vehicle suspension 100.

[0088] In this embodiment, during actual use, the front airbag assembly, rear airbag assembly, and the connection positions of the intake pipe 131, exhaust pipe 134, and main pipe are arranged sequentially. The first isolation valve 151 is opened, connecting the front airbag assembly and the rear airbag assembly, allowing the intake pipe 131 and exhaust pipe 134 to intake and exhaust air for the first airbag 121 and / or the second airbag 122 of the front airbag assembly. Figure 2 As shown, when the first isolation valve 151, the second isolation valve 152, the third isolation valve 153, the fourth isolation valve 154, and the fifth isolation valve 155 are all disconnected, the first airbag 121, the second airbag 122, the third airbag 123, and the fourth airbag 124 are independent of each other, and the vehicle suspension 100 is in a four-point support mode, which is beneficial to improving the roll stiffness of the front and rear axle frames 110 at high speeds. Figure 3 As shown, when the first isolation valve 151, the fourth isolation valve 154, and the fifth isolation valve 155 are disconnected, and the second isolation valve 152 and the third isolation valve 153 are connected, the first airbag 121 and the second airbag 122 are interconnected, and the third airbag 123 and the fourth airbag 124 are disconnected. The vehicle suspension 100 is in a three-point support mode (one point in front, two points behind), which can alleviate the imbalance caused by one side of the vehicle being suspended on twisted road sections, and is suitable for heavily loaded vehicles. Figure 4As shown, when the first isolation valve 151, the second isolation valve 152, and the third isolation valve 153 are disconnected, and the fourth isolation valve 154 and the fifth isolation valve 155 are connected, the first airbag 121 and the second airbag 122 are disconnected from each other, while the third airbag 123 and the fourth airbag 124 are connected to each other. The vehicle suspension 100 is in a three-point positioning mode with two points in front and one point behind, which can reduce the imbalance of the whole vehicle with one side suspended in tortuous road sections and is suitable for vehicles in unloaded or lightly loaded states. Figure 5 As shown, when the first isolation valve 151 is disconnected and the second isolation valve 152, the third isolation valve 153, the fourth isolation valve 154 and the fifth isolation valve 155 are connected, the first airbag 121 and the second airbag 122 are connected to each other, the third airbag 123 and the fourth airbag 124 are connected to each other, the vehicle suspension 100 is in a two-point support mode, the left and right air paths of the front airbag assembly and the rear airbag assembly are connected, and the left and right linkage balance can reduce the imbalance of the whole vehicle due to one side being suspended in the air on twisted road sections.

[0089] See Figure 6 As shown, in an optional embodiment, the main piping includes a central piping 141, a first front airbag branch 146, and a first rear airbag branch 147. The first front airbag branch 146 is connected to the central piping 141. One end of the first front airbag branch 146 is connected to the first airbag 121, and the other end is connected to the second airbag 122. The first rear airbag branch 147 is connected to the central piping 141. One end of the first rear airbag branch 147 is connected to the third airbag 123, and the other end is connected to the fourth airbag 124.

[0090] The valve assembly includes a sixth isolation valve 161 and a seventh isolation valve 162. The sixth isolation valve 161 is located at the connection between the first front airbag branch 146 and the intermediate pipeline 141. The sixth isolation valve 161 includes an openable / closable first connecting end 1611, an openable / closable second connecting end 1612, and an openable / closable third connecting end 1613. The first connecting end 1611 is connected to the intermediate pipeline 141, the second connecting end 1612 is connected to the first airbag 121, and the third connecting end 1613 is connected to the second airbag 122. The seventh isolation valve 162 is located at the connection between the first rear airbag branch 147 and the intermediate pipeline 141. The seventh isolation valve 162 includes an openable / closable fourth connecting end 1621, an openable / closable fifth connecting end 1622, and an openable / closable sixth connecting end 1623. The fourth connection end 1621 is connected to the intermediate pipe 141, the fifth connection end 1622 is connected to the third airbag 123, and the sixth connection end 1623 is connected to the fourth airbag 124.

[0091] When the second connecting end 1612 is connected to the third connecting end 1613, the first airbag 121 and the second airbag 122 are connected; when the second connecting end 1612 is disconnected from the third connecting end 1613, the first airbag 121 and the second airbag 122 are disconnected. When the fifth connecting end 1622 is connected to the sixth connecting end 1623, the third airbag 123 and the fourth airbag 124 are connected; when the fifth connecting end 1622 is disconnected from the sixth connecting end 1623, the third airbag 123 and the fourth airbag 124 are disconnected.

[0092] In practical use, the intake pipe 131 and the exhaust pipe 134 are connected to the intermediate pipe 141. When the first connecting end 1611 and the second connecting end 1612 are open, and the third connecting end 1613 and the fourth connecting end 1621 are closed, air can be introduced or exhausted into the first airbag 121; when the first connecting end 1611 and the third connecting end 1613 are open, and the second connecting end 1612 and the fourth connecting end 1621 are closed, air can be introduced or exhausted into the second airbag 122. When the fourth connecting end 1621 and the fifth connecting end 1622 are open, and the sixth connecting end 1623 and the first connecting end 1611 are closed, air can be introduced or exhausted into the third airbag 123. When the fourth connecting end 1621 and the sixth connecting end 1623 are open, and the fifth connecting end 1622 and the first connecting end 1611 are closed, air can be introduced or exhausted into the fourth airbag 124. When the second connecting end 1612, the third connecting end 1613, the fifth connecting end 1622, and the sixth connecting end 1623 are all disconnected, the first airbag 121, the second airbag 122, the third airbag 123, and the fourth airbag 124 are independent of each other, and the vehicle suspension 100 is in a four-point support mode, which is beneficial to improving the roll stiffness of the front and rear axle frames 110 at high speeds. When the second connecting end 1612 and the third connecting end 1613 are open, and the first connecting end 1611, the fifth connecting end 1622, and the sixth connecting end 1623 are closed, the first airbag 121 and the second airbag 122 are connected to each other, and the third airbag 123 and the fourth airbag 124 are disconnected from each other, the vehicle suspension 100 is in a three-point support mode with one point in the front and two points in the rear, which can reduce the imbalance of the whole vehicle with one side suspended on twisting road sections and is suitable for heavy-load vehicle conditions. When the fifth connecting end 1622 and the sixth connecting end 1623 are opened, and the fourth connecting end 1621, the second connecting end 1612 and the third connecting end 1613 are closed, the first airbag 121 and the second airbag 122 are disconnected from each other, and the third airbag 123 and the fourth airbag 124 are connected to each other. The vehicle suspension 100 is in a three-point positioning mode with two points in front and one point behind, which can reduce the imbalance of the whole vehicle with one side suspended in the windy road section. It is suitable for the vehicle to be unloaded or lightly loaded. When the first connecting end 1611 and the fourth connecting end 1621 are closed, and the second connecting end 1612, the third connecting end 1613, the fifth connecting end 1622 and the sixth connecting end 1623 are opened, the first airbag 121 and the second airbag 122 are interconnected, the third airbag 123 and the fourth airbag 124 are interconnected, the vehicle suspension 100 is in a two-point support mode, the left and right air passages of the front airbag assembly and the rear airbag assembly are connected, and the left and right linkage balance can reduce the imbalance of the whole vehicle due to one side being suspended in the air on twisted road sections.

[0093] See Figure 7 and Figure 8As shown, in an optional embodiment, the vehicle suspension 100 includes a second front airbag branch 148 and a second rear airbag branch 149. One end of the second front airbag branch 148 is connected to the first airbag 121, and the other end is connected to the second airbag 122. The second rear airbag branch 149 has one end connected to the third airbag 123 and the other end connected to the fourth airbag 124.

[0094] The valve assembly includes an eighth isolation valve 171 and a ninth isolation valve 172. The eighth isolation valve 171 is located in the second front airbag branch 148. When the eighth isolation valve 171 is closed, the first airbag 121 is disconnected from the second airbag 122; when the eighth isolation valve 171 is open, the first airbag 121 and the second airbag 122 are connected. The ninth isolation valve 172 is located in the second rear airbag branch 149. When the ninth isolation valve 172 is closed, the third airbag 123 is disconnected from the fourth airbag 124; when the ninth isolation valve 172 is open, the third airbag 123 and the fourth airbag 124 are connected.

[0095] Through the above configuration, the connection and disconnection of the second front airbag branch 148 and the second rear airbag branch 149 are controlled by connecting or disconnecting the eighth isolation valve 171 and the ninth isolation valve 172. The eighth isolation valve 171 and the ninth isolation valve 172 are on / off valves, specifically, they can be valves with on / off control functions such as pilot solenoid valves. Through the above configuration, when the vehicle is in adverse road conditions, the left and right air passages of the front airbag assembly and / or the rear airbag assembly are connected to achieve left and right linkage balance, improving the stability of the vehicle during driving.

[0096] See Figure 7 As shown, in an optional embodiment, the main pipeline includes: a central pipeline 141, first and second branch pipelines 143, a third branch pipeline 144, and a fourth branch pipeline 145. The first branch pipeline 142 connects the first airbag 121 to the central pipeline 141; the second branch pipeline 143 connects the second airbag 122 to the central pipeline 141; the third branch pipeline 144 connects the third airbag 123 to the central pipeline 141; and the fourth branch pipeline 145 connects the fourth airbag 124 to the central pipeline 141.

[0097] The valve assembly includes a second isolation valve 152, a third isolation valve 153, a fourth isolation valve 154, and a fifth isolation valve 155. The second isolation valve 152 is located in the first branch 142; the third isolation valve 153 is located in the second branch 143; the fourth isolation valve 154 is located in the third branch 144; and the fifth isolation valve 155 is located in the fourth branch 145.

[0098] In practical use, the intake pipe 131 and the exhaust pipe 134 are connected to the intermediate pipe 141. When the second isolation valve 152 is open and the third isolation valve 153, the fourth isolation valve 154, the fifth isolation valve 155, the eighth isolation valve 171, and the ninth isolation valve 172 are all closed, air can be supplied to or exhausted from the first airbag 121. When the third isolation valve 153 is open and the second isolation valve 152, the fourth isolation valve 154, the fifth isolation valve 155, the eighth isolation valve 171, and the ninth isolation valve 172 are all closed, air can be supplied to or exhausted from the second airbag 122. When the fourth isolation valve 154 is open and the second isolation valve 152, the third isolation valve 153, the fifth isolation valve 155, the eighth isolation valve 171, and the ninth isolation valve 172 are all closed, air can be supplied to or exhausted from the third airbag 123. When the fifth isolation valve 155 is open and the second isolation valve 152, third isolation valve 153, fourth isolation valve 154, eighth isolation valve 171, and ninth isolation valve 172 are all closed, air can be supplied to or exhausted from the fourth airbag 124. When the second isolation valve 152, third isolation valve 153, fourth isolation valve 154, fifth isolation valve 155, eighth isolation valve 171, and ninth isolation valve 172 are all disconnected, the first airbag 121, second airbag 122, third airbag 123, and fourth airbag 124 are independent of each other, and the vehicle suspension 100 is in a four-point support mode, which is beneficial to improving the roll stiffness of the front and rear axle frames 110 at high speeds. When the second isolation valve 152, the third isolation valve 153, the fourth isolation valve 154, the fifth isolation valve 155, and the ninth isolation valve 172 are disconnected, and the eighth isolation valve 171 is opened, the first airbag 121 and the second airbag 122 are interconnected, while the third airbag 123 and the fourth airbag 124 are disconnected. The vehicle suspension 100 is in a three-point support mode with one point in front and two points behind, which can reduce the imbalance of the whole vehicle on one side when it is suspended on twisted road sections and is suitable for heavy-load vehicle conditions. When the second isolation valve 152, the third isolation valve 153, the fourth isolation valve 154, the fifth isolation valve 155, and the eighth isolation valve 171 are disconnected, and the ninth isolation valve 172 is opened, the first airbag 121 and the second airbag 122 are disconnected, while the third airbag 123 and the fourth airbag 124 are interconnected, forming a three-point positioning mode with two points in front and one point behind. This can reduce the imbalance of the whole vehicle on one side when it is suspended on twisted road sections and is suitable for unloaded or lightly loaded vehicle conditions. When the second isolation valve 152, the third isolation valve 153, the fourth isolation valve 154, and the fifth isolation valve 155 are disconnected, and the eighth isolation valve 171 and the ninth isolation valve 172 are opened, the first airbag 121 and the second airbag 122 are interconnected, the third airbag 123 and the fourth airbag 124 are interconnected, the vehicle suspension 100 is in a two-point support mode, the left and right air passages of the front airbag assembly and the rear airbag assembly are connected, and the left and right linkage balance can reduce the imbalance of the whole vehicle due to one side being suspended on twisted road sections.

[0099] See Figure 8As shown, in an optional embodiment, the main pipeline includes an intermediate pipeline 141. The valve assembly includes a tenth isolation valve 181, which includes an openable and closable seventh connection terminal 1811, an openable and closable eighth connection terminal 1812, an openable and closable ninth connection terminal 1813, an openable and closable tenth connection terminal 1814, and an intermediate connection terminal 1815. The intermediate connection terminal 1815 is connected to the seventh connection terminal 1811, the eighth connection terminal 1812, the ninth connection terminal 1813, and the tenth connection terminal 1814, respectively. The seventh connection terminal 1811 is connected to the first airbag 121; the eighth connection terminal 1812 is connected to the second airbag 122; the ninth connection terminal 1813 is connected to the third airbag 123; the tenth connection terminal 1814 is connected to the fourth airbag 124; and the intermediate connection terminal 1815 is connected to the intermediate pipeline 141.

[0100] In practical use, the intake pipe 131 and the exhaust pipe 134 are connected to the intermediate pipe 141. When the intermediate connection end 1815 and the seventh connection end 1811 are open, and the eighth connection end 1812, the ninth connection end 1813, and the tenth connection end 1814 are closed, air can be introduced or exhausted from the first airbag 121. When the intermediate connection end 1815 and the eighth connection end 1812 are open, and the seventh connection end 1811, the ninth connection end 1813, and the tenth connection end 1814 are closed, air can be introduced or exhausted from the second airbag 122. When the intermediate connection end 1815 and the ninth connection end 1813 are open, and the seventh connection end 1811, the eighth connection end 1812, and the tenth connection end 1814 are closed, air can be introduced or exhausted from the third airbag 123. When the intermediate connecting end 1815 and the tenth connecting end 1814 are open, and the seventh connecting end 1811, the eighth connecting end 1812 and the ninth connecting end 1813 are closed, air can be introduced or exhausted into the fourth airbag 124. When the seventh connecting end 1811, the eighth connecting end 1812, the ninth connecting end 1813 and the tenth connecting end 1814 are closed, and the eighth isolation valve 171 and the ninth isolation valve 172 are closed, the first airbag 121, the second airbag 122, the third airbag 123 and the fourth airbag 124 are independent of each other, and the vehicle suspension 100 is in a four-point support mode, which is beneficial to improving the roll stiffness of the front and rear axle frames 110 when driving at high speed. When the seventh connecting end 1811, the eighth connecting end 1812, the ninth connecting end 1813, and the tenth connecting end 1814 are closed, the eighth isolation valve 171 is open, and the ninth isolation valve 172 is closed, the first airbag 121 and the second airbag 122 are interconnected, and the third airbag 123 and the fourth airbag 124 are disconnected. The vehicle suspension 100 is in a three-point support mode with one point in front and two points behind, which can reduce the imbalance of the whole vehicle on one side when it is suspended on twisted road sections and is suitable for heavy-load vehicle conditions. When the seventh connecting end 1811, the eighth connecting end 1812, the ninth connecting end 1813, and the tenth connecting end 1814 are closed, the eighth isolation valve 171 is closed, and the ninth isolation valve 172 is open, the first airbag 121 and the second airbag 122 are disconnected, and the third airbag 123 and the fourth airbag 124 are interconnected, forming a three-point positioning mode with two points in front and one point behind. This can reduce the imbalance of the whole vehicle on one side when it is suspended on twisted road sections and is suitable for unloaded or lightly loaded vehicle conditions. When the seventh connecting end 1811, the eighth connecting end 1812, the ninth connecting end 1813 and the tenth connecting end 1814 are closed, and the eighth isolation valve 171 and the ninth isolation valve 172 are open, the first airbag 121 and the second airbag 122 are connected to each other, the third airbag 123 and the fourth airbag 124 are connected to each other, the vehicle suspension 100 is in a two-point support mode, the left and right air passages of the front airbag assembly and the rear airbag assembly are connected, and the left and right linkage balance can reduce the imbalance of the whole vehicle due to one side being suspended in the air on twisted road sections.

[0101] See Figure 1 and Figure 6-8As shown, in an optional embodiment, it also includes an air source 133, an intake valve 132, and an exhaust valve 135. One end of the intake pipe 131 is connected to the air source 133, and the other end of the intake pipe 131 is connected to the main pipe. The intake valve 132 is located in the intake pipe 131, and the exhaust valve 135 is located in the exhaust pipe 134.

[0102] When the intake valve 132 is open, the intake pipe 131 connects the air source 133 and the main pipe, allowing air to enter the first airbag 121, the second airbag 122, the third airbag 123, and the fourth airbag 124; when the exhaust valve 135 is open, air can be exhausted from the first airbag 121, the second airbag 122, the third airbag 123, and the fourth airbag 124. This configuration simplifies the airflow pipe structure, simplifies the vehicle suspension 100 structure, and facilitates the manufacturing of the vehicle suspension 100.

[0103] This application also provides a vehicle that includes the aforementioned vehicle suspension 100.

[0104] When the vehicle is in different road conditions, the left and right air passages of the front airbag assembly and / or rear airbag assembly are connected to achieve left and right linkage balance, which improves the stability of the vehicle during driving, which is beneficial to the safety of the vehicle and the driving experience.

[0105] It should be noted that the technical solutions or features described in the above embodiments can be combined or supplemented with each other without conflict. The scope of protection of this application is not limited to the precise structures described in the above embodiments and shown in the accompanying drawings; all modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the scope of protection of this application.

Claims

1. A vehicle suspension, characterized in that, include: Frame; The front airbag assembly includes a first airbag and a second airbag, which are disposed on both sides of the front end of the frame. The rear airbag assembly includes a third airbag and a fourth airbag, which are disposed on both sides of the rear end of the frame. An airflow duct, connected to the first airbag, second airbag, third airbag, and fourth airbag respectively, is used to supply or exhaust air to the first airbag, second airbag, third airbag, and fourth airbag; the airflow duct includes a main duct, which is connected to the first airbag, second airbag, third airbag, and fourth airbag respectively; the main duct includes: an intermediate duct; a first branch connecting the first airbag to the intermediate duct; a second branch connecting the second airbag to the intermediate duct; and a third branch connecting the third airbag to the fourth airbag. The system includes: an airbag and the intermediate pipeline; a fourth branch connecting the fourth airbag and the intermediate pipeline; and a valve assembly located on the main pipeline for controlling the connection / disconnection between the first and second airbags, between the third and fourth airbags, and between the front and rear airbag assemblies. The valve assembly includes: a first isolation valve located on the intermediate pipeline; a second isolation valve located on the first branch; a third isolation valve located on the second branch; a fourth isolation valve located on the third branch; and a fifth isolation valve located on the fourth branch.

2. The vehicle suspension according to claim 1, characterized in that, The airflow piping includes: An air intake pipe, connected to the main pipe, is used to supply air to the first airbag, the second airbag, the third airbag, and the fourth airbag; An exhaust pipe, connected to the main pipe, is used to exhaust air into the first airbag, the second airbag, the third airbag, and the fourth airbag.

3. The vehicle suspension according to claim 2, characterized in that, When the first isolation valve is closed, the front airbag assembly is disconnected from the rear airbag assembly; when the first isolation valve is open, the front airbag assembly is connected to the rear airbag assembly. When both the second and third isolation valves are open, the first airbag and the second airbag are connected; when either the second or third isolation valve is closed, the first and second airbags are disconnected. When both the fourth and fifth isolation valves are open, the third airbag and the fourth airbag are connected; when either the fourth or fifth isolation valve is closed, the third airbag and the fourth airbag are disconnected.

4. The vehicle suspension according to claim 3, characterized in that, include: The first sensor is installed in the air intake pipe; The second sensor is located in the first branch; The third sensor is located in the second branch; The fourth sensor is located in the third branch; The fifth sensor is located in the fourth branch; The first sensor includes a pressure sensor; the second sensor includes a pressure sensor; the third sensor includes a pressure sensor; the fourth sensor includes a pressure sensor; and the fifth sensor includes a pressure sensor.

5. The vehicle suspension according to claim 2, characterized in that, It also includes an air source, an intake valve, and an exhaust valve. One end of the intake pipe is connected to the air source, and the other end of the intake pipe is connected to the main pipe. The intake valve is located in the intake pipe, and the exhaust valve is located in the exhaust pipe.

6. A vehicle suspension, characterized in that, include: Frame; The front airbag assembly includes a first airbag and a second airbag, which are disposed on both sides of the front end of the frame. The rear airbag assembly includes a third airbag and a fourth airbag, which are disposed on both sides of the rear end of the frame. An airflow duct, connected to the first airbag, the second airbag, the third airbag, and the fourth airbag respectively, is used to supply or exhaust air to the first airbag, the second airbag, the third airbag, and the fourth airbag; the airflow duct includes a main duct, which is connected to the first airbag, the second airbag, the third airbag, and the fourth airbag respectively; the main duct includes: Intermediate piping; A first front airbag branch connected to the intermediate pipeline, one end of the first front airbag branch being connected to the first airbag, and the other end of the first front airbag branch being connected to the second airbag. A first rear airbag branch is connected to the intermediate pipeline, one end of the first rear airbag branch is connected to the third airbag, and the other end of the first rear airbag branch is connected to the fourth airbag. A valve assembly, disposed in the main pipeline, is used to control the connection and disconnection between the first airbag and the second airbag, between the third airbag and the fourth airbag, and between the front airbag assembly and the rear airbag assembly. The valve assembly includes: A sixth isolation valve is disposed at the connection between the first front airbag branch and the intermediate pipeline; the sixth isolation valve includes an openable and closable first connection end, an openable and closable second connection end, and an openable and closable third connection end; the first connection end is connected to the intermediate pipeline, the second connection end is connected to the first airbag, and the third connection end is connected to the second airbag. A seventh isolation valve is provided at the connection between the first rear airbag branch and the intermediate pipeline; the seventh isolation valve includes an openable and closable fourth connection end, an openable and closable fifth connection end and an openable and closable sixth connection end, the fourth connection end is connected to the intermediate pipeline, the fifth connection end is connected to the third airbag, and the sixth connection end is connected to the fourth airbag. When the second connecting end is connected to the third connecting end, the first airbag and the second airbag are in communication; when the second connecting end is disconnected from the third connecting end, the first airbag and the second airbag are disconnected. When the fifth connecting end is connected to the sixth connecting end, the third airbag and the fourth airbag are in communication; when the fifth connecting end is disconnected from the sixth connecting end, the third airbag and the fourth airbag are disconnected.

7. A vehicle suspension, characterized in that, include: Frame; The front airbag assembly includes a first airbag and a second airbag, which are disposed on both sides of the front end of the frame. The rear airbag assembly includes a third airbag and a fourth airbag, which are disposed on both sides of the rear end of the frame. An airflow duct, connected to the first airbag, second airbag, third airbag, and fourth airbag respectively, is used to introduce or exhaust air into the first airbag, second airbag, third airbag, and fourth airbag; the airflow duct includes a main duct, which is connected to the first airbag, second airbag, third airbag, and fourth airbag respectively; the main duct includes: an intermediate duct; a first branch connecting the first airbag to the intermediate duct; a second branch connecting the second airbag to the intermediate duct; a third branch connecting the third airbag to the intermediate duct; and a fourth branch connecting the fourth airbag to the intermediate duct; The second front airbag branch has one end connected to the first airbag and the other end connected to the second airbag. The second rear airbag branch has one end connected to the third airbag and the other end connected to the fourth airbag. The valve assembly includes: The second isolation valve is installed in the first branch; The third isolation valve is located in the second branch; The fourth isolation valve is located in the third branch; The fifth isolation valve is located in the fourth branch; An eighth isolation valve is provided in the branch of the second front airbag; when the eighth isolation valve is closed, the first airbag is disconnected from the second airbag; when the eighth isolation valve is open, the first airbag is connected to the second airbag. A ninth isolation valve is provided in the second rear airbag branch; when the ninth isolation valve is closed, the third airbag is disconnected from the fourth airbag; when the ninth isolation valve is open, the third airbag is connected to the fourth airbag.

8. The vehicle suspension according to claim 7, characterized in that, The main pipeline includes an intermediate pipeline; the valve assembly includes a tenth isolation valve, which includes an openable and closable seventh connection end, an openable and closable eighth connection end, an openable and closable ninth connection end, an openable and closable tenth connection end, and an intermediate connection end. The seventh connection end is connected to the first airbag; the eighth connection end is connected to the second airbag; the ninth connection end is connected to the third airbag; the tenth connection end is connected to the fourth airbag; and the intermediate connection end is connected to the intermediate pipeline.

9. A vehicle, characterized in that, The vehicle includes the vehicle suspension described in any one of claims 1-5; or The vehicle includes the vehicle suspension as described in claim 6; or The vehicle includes the vehicle suspension as described in claim 7 or 8.

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