Inflation tool for automobile air suspension

Abstract

The utility model provides an inflating tool for an automobile air suspension, which is characterized in that an air inlet port and an air outlet port connected with an air suspension assembly are arranged on an air distribution valve, and an air filter is connected in series on a pipeline connected between the air inlet port and a compressed air source. Water, oil, suspended particles and other impurities in compressed air are adsorbed through the air filter, the internal operation environment of the air spring and the air storage tank is maintained, and then the service life of the air suspension is prolonged.

Description

Technical Field

[0001] The utility model relates to the technical field of automobile suspension, in particular to an automobile air suspension inflation tool. Background Art

[0002] Air springs are springs that are filled with compressed air in a retractable, sealed container and use the elasticity of air. They are widely used in self-adjusting air suspensions for cars, buses, rail vehicles, machinery and equipment, and building bases. The air suspension must be filled with enough air during the assembly of the vehicle so that it can maintain the vehicle's posture after landing. In vehicle development and testing, and in situations where air springs fail and need to be repaired and replaced during personal use, an air compressor is needed to replenish air in the air spring and air tank. However, it is easy to mix in a lot of impurities during the air compressor replenishment process, affecting the performance of the air spring. Air springs are expensive and have high maintenance costs. The gas delivered to the air spring by the air compressor contains impurities such as water, oil, and air-suspended particles. The accumulation of more and more impurities will directly affect the life of the air spring, which is also one of the main reasons why air suspensions are prone to failure.

[0003] The patent entitled "A Gas Distribution Valve Assembly" (CN215673742U) discloses a technical solution, including a first switch valve and a second switch valve, a pressure sensor, and a gas storage tank connected in parallel through a bus. The air compressor is connected to the gas distribution valve to inflate the air spring and the gas storage tank. The gas distribution valve assembly of the above solution can realize the function of replenishing air to the air suspension, but the filter of the air compressor is located at the air inlet of the air compressor. The compressed gas delivered by its outlet will still be accompanied by water, oil and other impurities after being compressed by the air compressor, which is not conducive to the maintenance of the air spring. Utility Model Content

[0004] The utility model aims to provide an automobile air suspension inflation tool, which can filter the air entering the air suspension during the inflation process and is beneficial to the maintenance of the air suspension.

[0005] In order to achieve the above-mentioned purpose, the technical solution adopted by the utility model is: an automobile air suspension inflation tool, a gas distribution valve is provided with an air inlet port and an air outlet port, the air outlet port is connected to the air suspension assembly, and an air filter is connected in series on the pipeline connecting the air inlet port and the compressed air source.

[0006] The utility model mainly connects an air filter in series between the gas distribution valve and the compressed air source, absorbs impurities such as water, oil and suspended particles in the compressed air through the air filter, and then fills the purified air into the air suspension assembly through the gas distribution valve, thereby maintaining the internal operating environment of the air spring and the air tank, thereby increasing the service life of the air suspension. The tool is easy to carry and has a low production cost. BRIEF DESCRIPTION OF THE DRAWINGS

[0007] Figure 1 Schematic diagram of the tool for inflating the car's air suspension;

[0008] Figure 2 isometric view of a gas distribution valve;

[0009] Figure 3 for Figure 2 A partial enlarged view of point A in the middle. DETAILED DESCRIPTION

[0010] See also Figure 1-3 The automobile air suspension inflation tool shown has an air distribution valve 10 provided with an air inlet port 11 and an air outlet port 12, the air outlet port 12 is connected to the air suspension assembly 20, and an air filter 40 is connected in series on the pipeline connecting the air inlet port 11 and the compressed air source 30.

[0011] In the above scheme, the compressed air source 30 is generated by compressed air from an air compressor. The compressed air source 30, the air filter 40, the gas distribution valve 10, and the air suspension assembly 20 are connected to the air pipe in sequence through a conversion joint. After the compressed air passes through the air filter 40 from the air pipe, impurities such as water, oil, and suspended particles mixed in the compressed air are adsorbed, and the purified air is then filled into the air suspension assembly 20 through the gas distribution valve 10, effectively protecting the air suspension assembly 20 from being contaminated by external impurities during inflation, thereby extending the service life of the entire air suspension assembly 20.

[0012] In order to facilitate the control of gas distribution at the outlet port 12, the gas distribution valve 10 is a gas distribution solenoid valve, and the air inlet port 11 and the outlet port 12 control the opening and closing of the air path through the solenoid valve. The outlet port 12 includes four air spring ports 121, and the air spring ports 121 are respectively connected to the four air springs 21 of the air suspension assembly 20. The outlet port 12 also includes an air tank port 122, and the air tank port 122 is connected to the air tank 22 of the air suspension assembly 20. In the above scheme, the five solenoid valve ports of the outlet port 12 correspond to the air pipe paths of the four air springs 21 and one air tank 22 of the air suspension assembly 20, respectively, and the precise control of gas distribution is achieved by controlling the opening and closing of the air pipe path through the solenoid valve.

[0013] The signal control line of the gas distribution valve 10 is connected to the power supply, and the gas distribution valve 10 controls the opening and closing of the gas path of the gas outlet port 12 by the on-off of the signal control line circuit. In the above scheme, when the vehicle is in the research and development laboratory or the air spring fails and needs to be repaired, the vehicle cannot inflate the air suspension system 20 by itself, and an inflation tool can be used. In the research and development experiment, the test vehicle generally has not yet installed the battery. When using this tool to inflate, the gas distribution valve 10 needs to be connected to the external power supply with a wire. This scheme uses the on-off of the signal control line to control the opening and closing of the gas path of the gas outlet port 12. Among the five ports corresponding to the four air springs 21 and one air tank 22, when inflating, it is only necessary to control the power supply to connect to the port of the corresponding component.

[0014] The air tank 22 plays an important role in the air suspension assembly 20. When the vehicle is in normal use, the gas distribution valve 10 is connected to the vehicle power supply, and the air tank 22 stores air compressed by the air compressor. When the vehicle is driving on uneven roads and the air suspension height needs to be adjusted, the air tank 22 directly inflates the air spring 21 through the gas distribution valve 10, saving the time of compressing the air again.

[0015] A second air filter 50 is connected in series to the pipeline connecting the air spring port 121 and the air spring 21. The above technical solution can further improve the purity of the gas filled into the air spring 21 and prevent the compressed gas from mixing with new impurities in the gas distribution valve 10. However, compared with the previous embodiment, this embodiment requires four additional second air filters 50 to be connected to the air spring 21 respectively, and the air circuit connection is more complicated and the cost is higher.

Claims

1. An automobile air suspension inflation tool, wherein a gas distribution valve (10) is provided with an air inlet port (11) and an air outlet port (12), wherein the air outlet port (12) is connected to an air suspension assembly (20), characterized in that: An air filter (40) is connected in series to the pipeline connecting the air inlet port (11) and the compressed air source (30).

2. The vehicle air suspension inflation tool according to claim 1, characterized in that: The gas distribution valve (10) is a gas distribution solenoid valve, and the gas inlet port (11) and the gas outlet port (12) are controlled by the solenoid valve to open and close the gas path.

3. The vehicle air suspension inflation tool according to claim 2, characterized in that: The air outlet port (12) comprises four air spring ports (121), and the air spring ports (121) are respectively connected to four air springs (21) of the air suspension assembly (20).

4. The vehicle air suspension inflation tool according to claim 3, characterized in that: The air outlet port (12) further comprises an air storage tank port (122), and the air storage tank port (122) is connected to the air storage tank (22) of the air suspension assembly (20).

5. The vehicle air suspension inflation tool according to claim 2, characterized in that: The signal control line of the gas distribution valve (10) is connected to a power source, and the gas distribution valve (10) controls the opening and closing of the gas path of the gas outlet port (12) by switching on and off the circuit of the signal control line.

6. The vehicle air suspension inflation tool according to claim 3 or 4, characterized in that: A second air filter (50) is connected in series to the pipeline connecting the air spring port (121) and the air spring (21).

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