Air suspension valve

Abstract

The utility model relates to the technical field of automobile suspension, and provides an air suspension valve which comprises an upper shell, a lower shell, an air inlet channel and an air outlet channel, the air inlet channel and the air outlet channel are located on the upper shell and the lower shell respectively, the air inlet channel is fixedly communicated with an air inlet pipeline connector, and a ventilation cavity is formed in the upper shell. The ventilation cavity is divided into an inner ventilation cavity and an outer ventilation cavity through a sealing separation part, a spring is arranged in the lower shell, a movable piston is arranged on the top of the spring, a sealing rubber mat is arranged on the top of the movable piston, and the movable piston is pressed by the spring to jack up the sealing rubber mat so that the sealing rubber mat can abut against the sealing separation part to seal and separate the inner ventilation cavity from the outer ventilation cavity. The air spring pressure maintaining device has the advantages that the air spring pressure maintaining device is installed on an air spring and serves as a connecting point of the air spring and a compressed air pipeline, under the condition that air source pressure supply is lost, pressure in the air spring can still be maintained within a period of time, the air spring has the pressure maintaining function, and therefore a vehicle can run normally; and safety accidents are avoided.

Description

Technical Field

[0001] This utility model relates to the technical field of automobile suspension, specifically to an air suspension valve. Background Technology

[0002] Air suspension is a vehicle suspension system that uses air springs instead of traditional metal springs. It can adjust the amount of air in the springs through an electronic control system and an air compressor, thereby changing the vehicle's ground clearance, suspension stiffness, and ride comfort.

[0003] As a crucial component of air suspension, the air spring requires compressed air to operate. Therefore, a connector or valve is needed to connect the air spring to the air intake line that supplies it with air. Existing air spring valves or connectors only provide a simple connection. If the connected air source loses pressure, the air spring also loses the compressed gas necessary to support its normal operation. This can lead to a drop in air spring height, vehicle tilting, and problems with vehicle handling, ultimately affecting driving safety. Utility Model Content

[0004] This utility model proposes an air suspension valve that can be installed on the air spring and serve as the connection point between the air spring and the compressed gas pipeline. Even when the air pressure supply is lost, it can still maintain the internal pressure of the air spring for a period of time, enabling the air spring to have a pressure-holding function, thereby allowing the vehicle to drive normally and avoiding the occurrence of safety accidents.

[0005] Therefore, the technical solution adopted is as follows:

[0006] An air suspension valve includes an upper housing and a lower housing fixedly connected, and an air inlet channel and an air outlet channel respectively located on the upper housing and the lower housing. The air inlet channel is fixedly connected to an air inlet pipe connector. The upper housing has a venting cavity inside, which is divided into an inner venting cavity and an outer venting cavity by a sealed partition. The air inlet channel connects to the outer venting cavity, and the air outlet channel connects to the inner venting cavity. The lower housing has a spring receiving cavity inside, which contains a spring. The top of the spring has a movable piston, and the top of the movable piston has a sealing gasket. The movable piston is subjected to a top pressure by the spring, which lifts the sealing gasket so that it abuts against the sealing partition to seal and separate the inner venting cavity and the outer venting cavity.

[0007] A further technical solution is that a gas guide hole is connected to the outlet of the air intake channel, a gas distribution part is connected above the gas guide hole, and a gas channel is connected between the gas distribution part and the ventilation outer cavity.

[0008] A further technical solution is that the ventilation cavity has an annular structure, and the gas channels are a plurality of those channels are evenly distributed around the ventilation cavity and connect them to the gas distribution section.

[0009] A further technical solution is that the gas guide hole has two holes, which are respectively connected to both sides of the gas distribution section.

[0010] A further technical solution is that the bottom of the air intake channel has a limiting boss, which abuts against the air intake pipe connector.

[0011] A further technical solution is that the air outlet channel includes an air outlet branch pipe and an air outlet main pipe. There are several air outlet branch pipes that are evenly arranged around the air outlet main pipe. The two ends of the air outlet branch pipes are respectively connected to the ventilation cavity and the air outlet main pipe.

[0012] A further technical solution is that a limiting groove 1 is fixed on the top of the lower housing, a limiting groove 2 is opened on the outer wall of the air outlet channel, the outer edge of the sealing gasket is inserted into the limiting groove 1 and is pressed against the inner wall protrusion of the upper housing, and the inner edge of the sealing gasket is embedded in the limiting groove 2.

[0013] The working principle and beneficial effects of this application are as follows:

[0014] By setting up an inner and outer venting chamber, even after the intake pipe loses its air pressure, the inner venting chamber can still retain a portion of the air supply to power the air springs for a period of time. This allows the vehicle's height to remain constant temporarily in the event of a sudden interruption of the air supply, preventing the vehicle from suddenly dropping or rising significantly. This reduces the impact on the vehicle's stability and handling, prevents the vehicle from tilting or swaying due to drastic changes in height, and improves driving safety and comfort. Attached Figure Description

[0015] The present application will now be described in further detail with reference to the accompanying drawings and specific embodiments.

[0016] Figure 1 This is a schematic diagram of the overall structure of this application;

[0017] Figure 2 This is a cross-sectional structural diagram of this application;

[0018] Figure 3 This is a schematic diagram of the structure of the upper shell described in this application;

[0019] Figure 4 This is a schematic diagram of the structure of the lower shell described in this application;

[0020] Figure 5 This is a schematic diagram of the air outlet channel described in this application.

[0021] In the diagram: 1. Upper shell; 11. Inlet channel; 111. Gas guide hole; 112. Gas distribution section; 113. Gas channel; 114. Limiting boss; 12. Vent chamber; 121. Sealing partition; 122. Vent inner cavity; 123. Vent outer cavity; 2. Lower shell; 21. Outlet channel; 211. Outlet branch pipe; 212. Outlet main pipe; 22. Spring receiving cavity; 221. Spring; 222. Moving piston; 23. Sealing gasket; 231. Limiting groove one; 232. Limiting groove two. Detailed Implementation

[0022] The technical solutions of this utility model will be clearly and completely described below with reference to the embodiments of this utility model. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of this utility model.

[0023] like Figures 1-5 As shown, an air suspension valve includes an upper housing 1 and a lower housing 2 fixedly connected, and an air intake channel 11 and an air outlet channel 21 respectively located on the upper housing 1 and the lower housing 2. The air intake channel 11 is fixedly connected to an air intake pipe connector. The upper housing 1 has a ventilation chamber 12 inside, which is divided into an inner ventilation chamber 122 and an outer ventilation chamber 123 by a sealing partition 121. The air intake channel 11 connects to the outer ventilation chamber 123, and the air outlet channel 21 connects to the inner ventilation chamber 122. The lower housing 2 has a spring receiving chamber 22 inside, and a spring 221 inside the spring receiving chamber 22. The top of the spring 221 has a movable piston 222, and the top of the movable piston 222 has a sealing gasket 23. The movable piston 222 is subjected to a top pressure by the spring 221, which pushes the sealing gasket 23 up so that it abuts against the sealing partition 121 to seal and separate the inner ventilation chamber 122 and the outer ventilation chamber 123.

[0024] In use, the air source is first introduced through the air intake pipe connected to the air intake channel 11. Under normal conditions, the spring 221 pushes the moving piston 222 upward, and the moving piston 222 pushes the sealing gasket 23 upward. At this time, the sealing gasket 23 is in close contact with the sealing partition 121, ensuring that the ventilation inner cavity 122 and the ventilation outer cavity 123 on both sides are sealed and separated. When the air source is introduced, the air source continuously enters the ventilation outer cavity 123, causing the air pressure in the ventilation outer cavity 123 to gradually increase until the gas pressure is greater than the force of the spring 221. At this time, the air pressure pushes the sealing gasket 23 to move downward so that it separates from the sealing partition 121. The gap between the two after separation becomes the connecting channel between the ventilation inner cavity 122 and the ventilation outer cavity 123, allowing the gas in the ventilation outer cavity 123 to continue to flow into the ventilation inner cavity 122 and finally fill the air spring 221 from the air outlet channel 21.

[0025] When the air source loses pressure, the pressure in the air intake pipe returns to zero, and the air pressure inside the venting outer cavity 123 gradually decreases, thus losing pressure on the sealing gasket 23. At this time, the elasticity of the spring 221 causes the sealing gasket 23 to come into close contact with the sealing partition 121 again, separating the venting inner cavity 122 and the venting outer cavity 123, preventing the air pressure inside the venting inner cavity 122 from continuing to dissipate, and maintaining pressure. Thus, the air inside the venting inner cavity 122 can still support the air spring 221 to continue working for a certain period of time.

[0026] In the event of a sudden interruption of the air supply, this system can temporarily maintain the vehicle's height, preventing sudden and significant drops or rises. This reduces the impact on vehicle stability and handling, preventing tilting and swaying caused by abrupt changes in height, thus improving driving safety and comfort. For example, if an air supply problem occurs while driving, the pressure-maintaining function allows the vehicle to continue driving relatively smoothly for a short distance, giving the driver time to find a suitable place to stop and inspect the vehicle. It provides the driver with sufficient time to address the air supply failure, allowing time to gradually slow the vehicle and pull over to a safe area, rather than abruptly losing control due to the loss of air suspension support. Simultaneously, it buys time for subsequent repairs or troubleshooting, preventing the problem from escalating or causing other more serious issues.

[0027] Furthermore, when the air supply is suddenly lost and there is no pressure holding function, the suspension system may be subjected to a large impact force. Holding the pressure for a period of time can reduce this impact and provide a certain degree of protection for suspension components such as the air spring 221 and shock absorbers. This reduces the risk of component damage caused by instantaneous pressure changes and reduces maintenance costs and the frequency of component replacement.

[0028] like Figure 3As shown, the outlet of the air intake channel 11 is connected to a gas guide hole 111, and a gas distribution section 112 is connected above the gas guide hole 111. A gas channel 113 connects the gas distribution section 112 and the ventilation cavity 123. The ventilation cavity 12 has an annular structure, and several gas channels 113 are evenly distributed around the ventilation cavity 12, connecting it to the gas distribution section 112. There are two gas guide holes 111, each connecting to one side of the gas distribution section 112.

[0029] In this embodiment, the air source, after entering through the intake channel 11, does not directly flow into the ventilation cavity 123. Instead, a reasonable distribution scheme is adopted. The air first enters through two gas guide holes 111, then rises and enters the gas distribution section 112. The two gas guide holes 111 evenly distribute the air to both sides of the annular gas distribution section 112, and then it is evenly introduced into the ventilation cavity 123 through several gas channels 113 surrounding the gas distribution section 112. The gas guide holes 111 can initially guide and organize the incoming air, allowing it to flow more evenly towards the gas distribution section 112 and then evenly into the gas channels 113. This ensures that each gas channel 113 receives a relatively balanced airflow, making the ventilation within the entire annular ventilation cavity 12 uniform. This ensures that the air springs 221 can be evenly inflated or deflated, allowing the suspension system to work smoothly and harmoniously. It also prevents uneven airflow from causing malfunctions in some springs 221 or shock absorbers, thus affecting the vehicle's stability and comfort.

[0030] When air passes through the gas guide hole 111, the structure of the gas guide hole 111 helps to stabilize the airflow and reduce the generation of turbulence and vortices. After the stable airflow enters the ventilation chamber 12, it can more accurately control the inflation and deflation speed and pressure changes of the air spring 221, making the suspension system more precise and rapid in adjusting parameters such as vehicle height and stiffness, improving the response speed and control accuracy of the suspension system, and allowing the vehicle to make appropriate adjustments in a timely manner under different road conditions.

[0031] like Figure 5 As shown, the air outlet channel 21 includes several branch air outlet pipes 211 and a main air outlet pipe 212. Several branch air outlet pipes 211 are evenly arranged around the main air outlet pipe 212. The two ends of each branch air outlet pipe 211 are connected to the ventilation cavity 122 and the main air outlet pipe 212, respectively. The ventilation cavity 122 gathers gas into the main air outlet pipe 212 through the evenly arranged branch air outlet pipes 211, further ensuring a uniform and stable gas flow into the air spring 221.

[0032] like Figure 4As shown, the top of the lower housing 2 is fixed with a limiting groove 231, and the outer wall of the air outlet channel 21 is provided with a limiting groove 232. The outer edge of the sealing gasket 23 is inserted into the limiting groove 231 and is pressed against the inner wall protrusion of the upper housing 1. The inner edge of the sealing gasket 23 is embedded in the limiting groove 232. The bottom of the air intake channel 11 has a limiting protrusion 114, which abuts against the air intake pipe connector.

[0033] The dual-limiting design of the sealing gasket 23 ensures the airtightness and structural stability of the entire valve body. This guarantees a stable seal when the internal air pressure decreases and the gasket comes into contact with the sealing partition 121, and it returns to its original position once the air supply is restored, further enhancing the sealing effect. The precise coordination of all components allows for smooth airflow between the guide hole, gas distribution section 112, and outlet passage 21, further optimizing the performance of the air spring 221 and improving the vehicle's dynamic balance and driving experience.

[0034] The precise engagement between the limiting boss 114 at the bottom of the air intake channel 11 and the air intake pipe connector ensures smooth airflow and avoids airflow leakage caused by loose air intake pipe connectors or inaccurate connector positions, thus ensuring air pressure stability and system reliability.

[0035] The above are merely preferred embodiments of the present utility model and are not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model shall be included within the protection scope of the present utility model.

Claims

1. An air suspension valve, characterized in that: It includes an upper housing (1) and a lower housing (2) that are fixedly connected, and an air inlet channel (11) and an air outlet channel (21) located on the upper housing (1) and the lower housing (2) respectively. The air inlet channel (11) is connected and fixed to the air inlet pipe connector. The upper housing (1) has a ventilation chamber (12) inside. The ventilation chamber (12) is divided into a ventilation inner chamber (122) and a ventilation outer chamber (123) by a sealing partition (121). The air inlet channel (11) is connected to the ventilation outer chamber (123), and the air outlet channel (21) is connected to the ventilation inner chamber (122). The lower housing (2) has a spring receiving cavity (22) inside, and a spring (221) is inside the spring receiving cavity (22). The top of the spring (221) has a movable piston (222), and the top of the movable piston (222) has a sealing gasket (23). The movable piston (222) is subjected to a top pressure by the spring (221) to push the sealing gasket (23) up so that it abuts against the sealing partition (121) to seal and separate the venting inner cavity (122) and the venting outer cavity (123).

2. An air suspension valve according to claim 1, characterized in that, The outlet of the air intake channel (11) is connected to a gas guide hole (111), and a gas distribution part (112) is connected above the gas guide hole (111). A gas channel (113) is connected between the gas distribution part (112) and the ventilation outer cavity (123).

3. An air suspension valve according to claim 2, characterized in that, The ventilation cavity (12) has a ring structure, and the gas channels (113) are a plurality of evenly distributed around the ventilation cavity (12) and connect it to the gas distribution section (112).

4. An air suspension valve according to claim 3, characterized in that, The gas guide hole (111) has two holes and is respectively connected to both sides of the gas distribution section (112).

5. An air suspension valve according to claim 1, characterized in that, The bottom of the air intake channel (11) has a limiting boss (114), which abuts against the air intake pipe connector.

6. An air suspension valve according to claim 1, characterized in that, The air outlet channel (21) includes an air outlet branch pipe (211) and an air outlet main pipe (212). There are several air outlet branch pipes (211) arranged evenly around the air outlet main pipe (212). The two ends of the air outlet branch pipes (211) are respectively connected to the ventilation cavity (122) and the air outlet main pipe (212).

7. An air suspension valve according to claim 1, characterized in that, The top of the lower housing (2) is fixed with a limiting groove 1 (231), and a limiting groove 2 (232) is opened on the outer wall of the air outlet channel (21). The outer edge of the sealing gasket (23) is inserted into the limiting groove 1 (231) and is pressed against the inner wall protrusion of the upper housing (1). The inner edge of the sealing gasket (23) is embedded in the limiting groove 2 (232).

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