Air suspension air supply unit

Abstract

The utility model provides an air suspension air supply unit, which relates to the technical field of air bag air supply devices, and comprises an air supply unit for supplying air or deflating air to an air bag, an ECAS controller for sending a lifting instruction, a power battery for providing a power supply, a power supply controller and an air compressor controller, one end of the air compressor controller is electrically connected with the power battery through the power supply controller, the other end of the air compressor controller is electrically connected with the air supply unit, the air compressor controller is in signal connection with the ECAS controller, and the air compressor controller receives a lifting instruction of the ECAS controller and controls the power battery to provide a high-power power source for the air supply unit. And the air supply unit directly supplies air or deflates air to the air bag. The power supply power of the air supply unit can be improved through the power battery, the air inlet amount and the air outlet amount are increased, the speed is improved, and meanwhile an air storage barrel is omitted.

Description

Technical Field

[0001] The present invention relates to the technical field of air suspension, and in particular to an air suspension air supply unit. Background Art

[0002] With the development of new energy vehicles, air suspension has gradually gained a foothold in the field of new energy passenger vehicles. Air suspension is a layer of inflatable material attached to the outside of the spring tube. By adding and reducing gas to adjust the length of the spring tube, the hardness and height of the car suspension can be changed to adapt to different usage scenarios of the car.

[0003] The existing air suspension system technology often uses a 12V low-voltage power supply, so the voltage of the air suspension's air supply device is relatively small, and the amount of gas it brings is relatively small, which affects the air suspension's air supply efficiency. Under the same power, the required current will be larger, so the required wiring harness requirements will be higher, increasing the cost of using the air suspension. Conventional air compression devices use a separate connection between the compressor and the motor. When installed in a car, it will increase the space occupied by the car. At the same time, each airbag requires an air supply unit to supply air, and the air supply units cannot be driven simultaneously using a common drive mechanism, affecting the air supply efficiency. Summary of the invention

[0004] The technical problem to be solved by the present invention is to provide an air suspension air supply unit which can be powered by a power battery, while reducing the device R&D and use costs through integration and improving the air supply efficiency.

[0005] Based on the technical problems existing in the background technology, the present invention proposes an air suspension air supply unit, including an air supply unit for supplying or deflating air to the airbag, an ECAS controller for issuing a lifting command, and also including a power battery for providing power, a power supply controller and an air compressor controller. One end of the air compressor controller is electrically connected to the power battery through the power supply controller, and the other end is electrically connected to the air supply unit. The air compressor controller is signal-connected to the ECAS controller. The air compressor controller receives the lifting command of the ECAS controller and controls the power battery to provide a high-power power supply to the air supply unit. The air supply unit directly supplies or deflates air to the airbag.

[0006] Furthermore, the air supply unit includes a shell, a piston and a driving mechanism, the shell has two groups of compression chamber groups for compressing air that are symmetrical about the driving mechanism, the compression chamber group has two compression chambers that are interconnected, and the two pistons are installed in the compression chamber group in an opposing sliding manner, and the driving mechanism drives the piston to slide in the compression chamber to compress the air.

[0007] Furthermore, the shell also has an air inlet, which is communicated with the compression chamber, and the air inlet is located outside the interlayer between the piston and the compression chamber.

[0008] Furthermore, the piston is provided with a first one-way valve for one-way conduction, and the opening of the first one-way valve is toward between the piston and the compression chamber.

[0009] Furthermore, a dryer is provided in the shell, and the dryer is communicated with the compression chamber and filters the gas compressed by the compression chamber.

[0010] Furthermore, the piston is connected to the driving mechanism through a crankshaft-handle mechanism.

[0011] Furthermore, the dryer has an air outlet for communicating with the air bag.

[0012] Furthermore, the dryer is provided with a pressure relief port.

[0013] Furthermore, a second one-way valve is installed between the compression chamber and the dryer, and the second one-way valve is connected to the dryer.

[0014] Compared with the prior art, the air suspension air supply unit proposed in the present invention adopts the above technical solution to achieve the following technical effects:

[0015] The present invention can provide high-pressure gas for the ECAS system through a high-power and high-flow air supply unit, directly input the high-pressure gas into the airbag, thereby increasing the lifting rate of the airbag, eliminating the air reservoir, simplifying the system structure, and saving the installation space of the device in the car. At the same time, the outer shell on the motor and the outer shell of the compression chamber are integrated, reducing the manufacturing materials of the device, and also improving the economic efficiency of maintenance, reducing the volume of the airbag air supply device, and saving the installation space of the device in the car. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a system structure diagram of the present invention;

[0017] Figure 2 It is a front cross-sectional structural diagram of the present invention;

[0018] Figure 3 It is a left-side structural diagram of the present invention.

[0019] In the figure: 1. Shell; 3. Piston; 11. Compression chamber; 8. Air inlet; 2. First one-way valve; 5. Dryer; 9. Air outlet; 4. Second one-way valve; 7. Crankshaft; 10. Air vent; 11. Double-head motor. DETAILED DESCRIPTION

[0020] In the present invention, 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 one; it can be a mechanical connection, an electrical connection, or communication 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, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0021] In the present invention, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, a first feature being "above", "above" or "above" a second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. A first feature being "below", "below" or "below" a second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0022] Example

[0023] Reference Figure 1 , Figure 2 The present invention is based on the technical problems existing in the background technology. The present invention proposes an air suspension air supply unit, including an air supply unit for supplying or deflating air to an air bag, an ECAS controller for issuing a lifting command, and also including a power supply unit and an air compressor controller for providing power. One end of the air compressor controller is electrically connected to the power supply unit, and the other end is electrically connected to the air supply unit. The air compressor controller is signal-connected to the ECAS controller (ECAS is called an air suspension system, and the ECAS controller is the control unit in the entire system). The air compressor controller receives the lifting command of the ECAS controller and provides power to the air supply unit. The air supply unit starts to supply or deflat the air bag.

[0024] Instructions are sent manually on the car and transmitted to the air compressor controller through the ECAS controller. The air compressor controller executes the instructions sent by the ECAS controller and connects the path between the power battery and the air supply unit, so that the air supply unit can connect the power in the power battery. The air supply unit operates to provide gas for the car's suspension airbags.

[0025] For specific embodiments, please refer to Figure 1The power supply unit includes a power battery and a power supply controller. One end of the power supply controller is electrically connected to the power battery, and the other end is electrically connected to the air compressor controller. The power supply voltage in the power battery is higher than 12V, and needs to be controlled by the power supply controller to output a voltage suitable for the air supply unit to prevent the device from being damaged by a voltage greater than the voltage it needs.

[0026] For specific embodiments, please refer to Figure 2 The air supply unit includes a housing 1, a piston 3 and a driving mechanism. The housing 1 has two groups of compression chambers that compress air symmetrically with respect to the driving mechanism. Each group of compression chambers has at least two mutually connected compression chambers 11, and a piston 3 is slidably installed in each compression chamber 11. In the present invention, the compression chamber group adopts opposingly connected compression chambers 11, and two pistons 3 are oppositely installed in the compression chamber 22. The driving mechanism drives the piston 3 to slide in the compression chamber 11 to compress air. The four compression chambers are all in the same plane. When the driving mechanism drives the piston 3 to move, the two pistons 3 in a single group of compression chambers move to compress gas and inhale air respectively. The driving mechanism drives the piston 3 to reciprocate in the compression chamber 11 and inflate the airbag. When the two groups of compression chambers are working, the obliquely symmetrical pistons 3 compress gas or inhale air at the same time.

[0027] In the present invention, each group of compression chambers can be a plurality of compression chambers connected in a ring shape, and the piston slides to compress the intake air. The two groups of compression chambers are symmetrical about the driving mechanism, which can improve stability when compressing the gas.

[0028] For specific embodiments, please refer to Figure 2 , Figure 3 The housing 1 also has an air inlet 8, which is connected to the compression chamber 11 and is located outside the interlayer between the piston 3 and the compression chamber 11. During the air intake process, since the size of the compression chamber 11 is constant, the piston 3 has a one-way valve, and the air inlet 8 is outside the interlayer between the piston 3 and the compression chamber 11 to ensure that the gas is sucked between the piston 3 and the interlayer of the compression chamber 11, and then compressed into the airbag.

[0029] For specific embodiments, please refer to Figure 2 The piston 3 is provided with a first one-way valve 2 which is unidirectional and opens toward the space between the piston 3 and the compression chamber 11. When the piston 3 slides toward the air inlet 8, the pressure of the interlayer between the piston 3 and the compression chamber 11 will decrease, and the gas will enter the interlayer between the piston 3 and the compression chamber 11 through the first one-way valve 2.

[0030] For further examples, please refer to Figure 2 The housing 1 also has a dryer 5, which is connected to the compression chamber 11 and filters the gas compressed by the compression chamber 11. All compression chambers 11 are connected to a single dryer 5, and the dryer 5 can filter the gas transmitted by the compression chamber 11.

[0031] For further examples, please refer to Figure 2 The piston is connected to the driving mechanism through a crankshaft-handle mechanism. The driving mechanism is a double-headed motor 11 that can drive the crankshaft to rotate.

[0032] For further examples, please refer to Figure 2 , Figure 3 The dryer 5 has an outlet 9 for connecting to the airbag. The dryer 5 can filter impurities in the gas entering the airbag to prevent impurities from entering the airbag and causing wear of the airbag. At the same time, the dryer 5 is connected to all the suspension airbags. When the two groups of pistons 3 are inhaled, the gas will be evenly distributed to the airbags, so that the vehicle can rise or fall smoothly, ensuring the stability of vehicle adjustment.

[0033] For specific embodiments, please refer to Figure 2 The dryer 5 also has a pressure relief port. The pressure relief port on the dryer 5 is opened and closed by the control in the car. When the airbag needs to be deflated, the deflation port 10 is opened, and the gravity of the car compresses the airbag to discharge the gas. The dryer 5 and the airbag are interconnected, and the deflation command is issued through the electronic control in the vehicle, then the deflation valve on the dryer 5 will open, and the airbag will be compressed by the weight of the vehicle to exhaust the gas. At the same time, the debris on the dryer 5 can be processed and reduced.

[0034] For specific embodiments, please refer to Figure 2 A second one-way valve 4 is installed between the compression chamber 11 and the dryer 5, and the second one-way valve 4 is connected to the dryer 5. When the air in the compression chamber 11 passes through the dryer 5, the gas is filtered to prevent impurities from entering the airbag.

[0035] The driving mechanism in the present invention is driven by a double-headed motor 11. The double-headed motor 11 drives the crankshaft to rotate and drive the four pistons to reciprocate. When the piston moves in the direction close to the crankshaft, the second one-way valve will be closed, and the gas will enter the compression chamber along the air inlet and enter the interlayer between the piston and the compression chamber through the first one-way valve. When the piston moves in the direction away from the crankshaft, the first one-way valve will be closed to form a closed space with the piston. The piston will guide the air in the compression chamber through the second one-way valve into the dryer for filtration, and then lead to the airbag of the car. The second one-way valve between each compression chamber and the dryer can prevent the air in the airbag from flowing back. At the same time, the pressure relief port on the dryer will be in a closed state through the vehicle's electronic control. When the gas in the airbag needs to be released, the pressure relief port will be directly opened. The gas in the airbag will be pressed out due to the weight of the car, thereby playing a role of deflation.

[0036] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical scheme and inventive concept of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. An air suspension air supply unit, comprising an air supply unit for supplying or deflation of airbags, and an ECAS controller for issuing lifting commands, characterized in that: It also includes a power battery, a power supply controller and an air compressor controller for providing power. One end of the air compressor controller is electrically connected to the power battery through the power supply controller, and the other end is electrically connected to the air supply unit. The air compressor controller is signal-connected to the ECAS controller. The air compressor controller receives the lifting and lowering instructions of the ECAS controller and controls the power battery to provide high-power power to the air supply unit. The air supply unit directly supplies air to or deflates the airbag.

2. The air suspension air supply unit according to claim 1, characterized in that: The air supply unit comprises a housing (1), a piston (3) and a driving mechanism, wherein the housing (1) has two groups of compression chamber groups for compressing air symmetrically with respect to the driving mechanism, the compression chamber group has two compression chambers (11) that are interconnected, and the two pistons (3) are slidably mounted in the compression chamber group in an opposed manner, and the driving mechanism drives the pistons (3) to slide in the compression chamber (11) to compress the air.

3. The air suspension air supply unit according to claim 2, characterized in that: The housing (1) also has an air inlet (8), which is in communication with the compression chamber (11), and the air inlet (8) is located outside the interlayer between the piston (3) and the compression chamber (11).

4. The air suspension air supply unit according to claim 2, characterized in that: The piston (3) is provided with a first one-way valve (2) for one-way conduction, and the opening of the first one-way valve (2) is directed toward between the piston (3) and the compression chamber (11).

5. The air suspension air supply unit according to claim 2, characterized in that: The housing (1) also has a dryer (5) therein; the dryer (5) is in communication with the compression chamber (11) and filters the gas compressed by the compression chamber (11).

6. The air suspension air supply unit according to claim 2, characterized in that: The piston is connected to the driving mechanism through a crankshaft-handle mechanism.

7. The air suspension air supply unit according to claim 5, characterized in that: The dryer (5) has an air outlet (9) for communicating with the air bag.

8. The air suspension air supply unit according to claim 5, characterized in that: The dryer (5) is also provided with a pressure relief port.

9. The air suspension air supply unit according to claim 5, characterized in that: A second one-way valve (4) is installed between the compression chamber (11) and the dryer (5), and the second one-way valve (4) is connected to the dryer (5).

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