Air suspension air supply output device

Abstract

The application discloses an air suspension air supply output device, which comprises a motor, a compression pump body arranged at one end of the motor, a main shaft of the motor inserted into the compression pump body, an operation inner cavity arranged in the compression pump body, a first chamber and a second chamber respectively arranged at two sides of the operation inner cavity, a first compression cavity and a second compression cavity respectively arranged at two ends of the operation inner cavity, a first piston movably arranged in the first compression cavity, a second piston arranged in the second compression cavity, the first piston and the second piston driven by the main shaft of the motor to move in the same direction and in the axial direction, the first compression cavity and the second compression cavity communicated with the first chamber through a first one-way valve and a second one-way valve respectively, the second chamber communicated with the second compression cavity, an exhaust port communicated with the second chamber arranged on the compression pump body, and an exhaust heat dissipation pipe connected to the exhaust port. The air supply output device adopts a two-stage compression air pump structure, and solves the problems of large volume, heavy quality, large noise and poor heat dissipation effect of the existing air supply unit.

Description

Technical Field

[0001] This invention relates to the field of automotive air suspension, specifically to an air suspension air supply output device. Background Technology

[0002] As a crucial component of an automotive active suspension system, air suspension primarily consists of an air supply unit, air springs, damping devices, a stabilizer, a height valve, a guide and force transmission mechanism, an air tank, and piping. It can adjust the suspension stiffness and damping in real time according to the vehicle's motion and road conditions, ensuring the suspension system is in optimal damping mode and providing excellent comfort under various road conditions. With increasing demands for ride comfort and advancements in suspension technology, air suspension is widely used in large buses, heavy-duty trucks, special-purpose vehicles, and high-end small cars.

[0003] As the core component of the air suspension system, the air supply unit compresses air and fills the air springs, providing the power source for adjusting the stiffness and damping of the air suspension. Currently, the air supply units used in automotive air suspensions on the domestic market are mainly single-stage compression units, resulting in low output gas pressure. This leads to low adjustment sensitivity of the automotive air suspension system, making it unsuitable for high-end vehicles. They also suffer from drawbacks such as large size, heavy weight, high noise, and poor heat dissipation. Summary of the Invention

[0004] This invention provides an air suspension air supply output device, which adopts a two-stage compressed air pump structure to solve the problems of existing air supply units being large in size, heavy in weight, noisy, and having poor heat dissipation.

[0005] To achieve the above objectives, the present invention provides the following technical solution: an air suspension air supply output device, comprising:

[0006] Electric motor;

[0007] A compression pump body is located at one end of the motor, and the main shaft of the motor is inserted into the compression pump body;

[0008] The compressor body has an internal running cavity and a first chamber and a second chamber respectively located on both sides of the running cavity. The first compression chamber and the second compression chamber are respectively located at both ends of the running cavity. A first piston is movably arranged in the first compression chamber, and a second piston is arranged in the second compression chamber. The first piston and the second piston are driven by the main shaft of the motor to move axially in the same direction.

[0009] The first compression chamber and the second compression chamber are respectively connected to the first chamber through a first check valve and a second check valve. The second chamber is connected to the second compression chamber. The compression pump body is equipped with an exhaust port connected to the second chamber. An exhaust heat dissipation pipe is connected to the exhaust port. The compression pump body is also equipped with a secondary air inlet connected to the first chamber.

[0010] Preferably, the compressor body is provided with a spring exhaust port that communicates with the operating cavity, and the end of the motor is equipped with a primary air inlet, and the spring exhaust port is connected to the primary air inlet.

[0011] Preferably, one end of the second piston is inserted into one end of the first piston, and the end of the second piston inserted into the first piston is connected to the eccentric wheel on the motor main shaft. One end of the first piston is connected to the second piston through a rotating pin.

[0012] Preferably, the compressor body is provided with a valve chamber that communicates with the operating cavity, and a power limiting valve is installed in the valve chamber.

[0013] Preferably, one end of the compression pump body seals the first compression chamber through a first end cap, and the other end of the compression pump body seals the first chamber and the second chamber through a second end cap.

[0014] Preferably, the exhaust heat dissipation pipe is a finned heat dissipation pipe.

[0015] Preferably, one end of the exhaust heat dissipation pipe is inserted into one end of the fixing hole seat on the compressor body, and the other end of the fixing hole seat is provided with an air pipe connector.

[0016] Preferably, the first piston has several first air inlets communicating with the operating cavity, and a third one-way valve is installed on the first piston to block the first air inlets.

[0017] Preferably, the second one-way valve is installed on the inner wall of the second compression chamber to block the second air inlet on the side wall of the second compression chamber. The second one-way valve includes a fixing part connected to the side wall of the second compression chamber. The fixing part is provided with a connecting hole. One end of the fixing part is provided with a first arc-shaped spring. One end of the first arc-shaped spring is provided with a first blocking part to block the second air inlet.

[0018] Preferably, the first piston has several first air inlets, the third one-way valve includes a center plate, the center plate has a connecting hole in the middle, and the two ends of the center plate are respectively connected to second arc-shaped springs, so that the third one-way valve is "H" shaped, and the second arc-shaped springs are provided with second sealing parts corresponding to the first air inlets.

[0019] Compared with the prior art, the beneficial effects of the present invention are:

[0020] (1) The compressor body adopts a two-stage structure. The first compression chamber achieves first-stage compression, and then the second compression chamber performs second-stage compression, which can achieve a higher output air pressure.

[0021] (2) A first chamber and a second chamber are respectively set on both sides of the operating cavity. The structure is compact. The first chamber can realize the connection between the first compression chamber and the second compression chamber. The second chamber is used to output high pressure, forming a smooth cycle.

[0022] (3) A power limiting valve is installed. When the power of the air supply unit is too high, the power limiting valve can be opened to introduce high-pressure gas into the pump inlet, which can better prevent the plunger pump from being blocked and protect the air suspension air supply unit.

[0023] (4) It is equipped with an exhaust heat dissipation pipe, which can quickly dissipate the high-pressure compressed gas and reduce the temperature, thus avoiding damage to other parts of the entire air suspension. Attached Figure Description

[0024] Figure 1 This is a schematic diagram of the main structure of the present invention;

[0025] Figure 2 This is a three-dimensional structural diagram of the present invention;

[0026] Figure 3 This is a front sectional view of the present invention;

[0027] Figure 4 for Figure 1 BB-direction sectional view of the structure;

[0028] Figure 5 for Figure 1 CC-direction cross-sectional view of the structure;

[0029] Figure 6 This is a three-dimensional structural diagram of the present invention after removing the end caps;

[0030] Figure 7 This is a three-dimensional structural diagram of the present invention from another direction after the end caps are removed;

[0031] Figure 8 This is a structural diagram of the third check valve of the present invention;

[0032] Figure 9 This is a structural diagram of the second check valve of the present invention.

[0033] Figure label:

[0034] 1. Motor; 11. First chamber; 12. Second chamber; 13. First check valve; 14. Valve chamber; 15. Fourth check valve; 16. First sealing part; 17. Fixing part; 18. First arc-shaped spring; 19. Second air inlet; 2. First-stage air inlet; 21. Second sealing part; 22. Center plate; 23. Connecting hole; 24. Second arc-shaped spring; 25. Running inner cavity; 26. Bearing; 27. Fixing hole seat; 28. Third check valve; 3. Compression pump body; 31. Second piston; 32. Eccentric wheel; 35. First piston; 36. First compression chamber; 37. Second compression chamber; 38. Rotating pin; 39. Connecting flow channel; 4. Exhaust heat dissipation pipe; 41. First air inlet; 42. Plug; 5. First end cover; 6. Exhaust port; 7. Power limiting valve; 8. Second-stage air inlet; 9. Spring exhaust inlet; 10. Second end cover. Detailed Implementation

[0035] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention.

[0036] like Figure 1-9 As shown, the present invention adopts a two-stage compressed air pump structure to solve the problems of large size, heavy weight, high noise, and poor heat dissipation of existing air supply units, and provides the following technical solution: an air suspension air supply output device, including: a motor 1, which can be a servo motor or a stepper motor, etc.; and a compressed pump body 3, which is disposed at one end of the motor 1, and the main shaft of the motor 1 is inserted into the compressed pump body 3; the compressed pump body 3 is provided with a running inner cavity 25 and a first chamber 11 and a second chamber 12 respectively disposed on both sides of the running inner cavity 25; a first compression chamber 36 and a second compression chamber 37 are respectively disposed at both ends of the running inner cavity 25; a first piston 35 is movably disposed in the first compression chamber 36; a second piston 31 is disposed in the second compression chamber 37; the first piston 35 and the second piston 31 are driven by the main shaft of the motor 1 to move axially in the same direction;

[0037] The first compression chamber 36 and the second compression chamber 37 are respectively connected to the first chamber 11 through the first one-way valve 13 and the second one-way valve 20. The second chamber 12 is connected to the second compression chamber 37. The compression pump body 3 is equipped with an exhaust port 6 connected to the second chamber 12. An exhaust heat dissipation pipe 4 is connected to the exhaust port 6. The compression pump body 3 is also equipped with a secondary air inlet 8 connected to the first chamber 11.

[0038] Specifically, the compressor body 3 is a one-piece molded structure with a flat overall shape. Its outer surface is evenly covered with heat dissipation ribs, which effectively improves the overall heat dissipation of the compressor body 3. The motor 1 serves as the output power source, and an eccentric wheel 32 can be mounted on its main shaft. As a specific embodiment where the motor 1 drives the first piston 35 and the second piston 31, one end of the second piston 31 is inserted into one end of the first piston 35, and this inserted end is connected to the eccentric wheel 32. One end of the first piston 35 is connected to the second piston 31 via a rotating pin 38. When the eccentric wheel 32 rotates, it pushes the second piston 31 to swing and move axially. While the second piston 31 swings and moves axially, it drives the first piston 35 to move axially. In practical applications, the end face area of ​​the first piston 35 is larger than that of the second piston 31, making the compression effect of the first stage compression better than that of the second stage compression. Both the end faces of the first piston 35 and the second piston 31 are equipped with rubber cups, which are in contact with and sealed to the side walls of the first compression chamber 36 and the second compression chamber 37. The rubber cups are pressed and fixed by the support ring. Bearings 26 are installed between the eccentric wheel 32 and the second piston 31. Wear-resistant rings are fitted between the rotating pin 38 and the first piston 35 and the second piston 31 to improve the service life of the rotating pin 38 and reduce noise.

[0039] During operation, as the first piston 35 retracts in the first compression chamber 36, low-pressure air is drawn into it. Then, the first piston 35 advances in the first compression chamber 36, compressing the gas and allowing it to enter the first chamber 11 through the first one-way valve 13. Simultaneously, as the second piston 31 in the second compression chamber 37 retracts, it draws the gas undergoing primary compression in the first chamber 11 into the second compression chamber 37. Then, the second piston 31 in the second compression chamber 37 advances, compressing and expelling the gas from the second compression chamber 37 into the second chamber 12, thus entering the first compression chamber 11. The gas in chamber 12 is high-pressure gas. A fourth one-way valve 15 can be installed between the second compression chamber 37 and the second chamber 12. The high-pressure gas entering the second chamber 12 is then discharged through the exhaust port 6 into the exhaust heat dissipation pipe 4 and input into the gas supply system. The exhaust heat dissipation pipe 4 can cool the high-pressure gas. Specifically, the exhaust heat dissipation pipe 4 is a finned heat dissipation pipe. A finned heat dissipation pipe has heat dissipation fins evenly arranged on the outer wall of a metal pipe. The heat dissipation fins can significantly increase the contact area between the outer wall of the metal pipe and the air, which can quickly cool the high-pressure gas transported in the exhaust heat dissipation pipe 4. At the same time, such as Figure 2As shown, one end of the exhaust heat dissipation pipe 4 is inserted into one end of the fixing seat 27 on the compressor body 3. The other end of the fixing seat 27 is provided with an air pipe connector. The fixing seat 27 is part of the compressor body 3, and its structure is a horizontally arranged through hole. It is preferably located below the second compression chamber 37. After the exhaust heat dissipation pipe 4 comes out from the exhaust port 6, it can go around a certain distance from the top to the bottom and connect with the fixing seat 27 to fix both ends of the exhaust heat dissipation pipe 4. The air pipe connector at the end of the fixing seat 27 can be connected to an external air pipe for communication with the distribution valve assembly.

[0040] To effectively utilize the airflow generated when the air springs deflate in the entire air suspension system, the compressor body 3 is equipped with a spring exhaust inlet 9 that communicates with the operating cavity 25. The spring exhaust inlet 9 is connected to each air spring through a pipeline with a control valve. The motor 1 is equipped with a primary air inlet 2 at its end. The spring exhaust inlet 9 is connected to the primary air inlet 2. Gas entering the operating cavity 25 can be discharged through the primary air inlet 2. Similarly, air can also be intake through the primary air inlet 2 when the compressor is running. The primary air inlet 2 can be connected to an external air pipe and can be installed at the end of the motor 1 away from the compressor body 3.

[0041] To ensure the safety of the compressor pump, the compressor pump body 3 is provided with a valve chamber 14 that communicates with the operating cavity 25. A power limiting valve 7 is installed in the valve chamber 14. The pressure limiting valve has multiple adjustable safety pressure settings, which can effectively prevent excessive pressure caused by air blockage. A plug 42 can be installed at the upper end of the compressor pump body 3. The plug 42 can be removed to open the operating cavity 25 for maintenance and other operations.

[0042] For ease of assembly, one end of the compression pump body 3 is sealed with the first compression chamber 36 by the first end cap 5, and the other end of the compression pump body 3 is sealed with the first chamber 11 and the second chamber 12 by the second end cap 10. A connecting channel 39 can be provided laterally on the first end cap 5, which can connect the first compression chamber 36 and the first one-way valve 13. Sealing rings are installed between the first end cap 5 and the second end cap 10 and the compression pump body 3. The sealing ring between the second end cap 10 and the compression pump body 3 can also seal and separate the first chamber 11 and the second chamber 12.

[0043] In order to achieve rapid air intake in the first compression chamber 36, such as Figure 3 , 6As shown in Figure 8, the first piston 35 has several first air inlets 41 communicating with the operating cavity 25. A third one-way valve 28 is installed on the first piston 35 to block the first air inlets 41. Specifically, the first piston 35 has several first air inlets 41. The third one-way valve 28 includes a center plate 22, with a connecting hole 23 in the center. Second arc-shaped spring pieces 24 are connected to both ends of the center plate 22, making the third one-way valve 28 "H"-shaped. The second arc-shaped spring pieces 24 are provided with... One air inlet 41 corresponds to the second sealing part 21. The first air inlet 41 is preferably four in number and arranged in a rectangular shape, so that the entire third one-way valve 28 has a symmetrical sheet-like structure. The connecting hole 23 on the center plate 22 can be used to install and fix the first piston 35 with screws. When air is introduced through the first air inlet 41, the four second sealing parts 21 can be pushed open at the same time. After the air is introduced, the second arc-shaped spring 24 is elastic, and the second sealing parts 21 automatically rebound to seal the first air inlet 41. The third one-way valve 28 adopts an irregular structure, which can meet the air intake requirements of the first compression chamber 36.

[0044] Similarly, such as Figure 9 As shown, the second one-way valve 20 is installed on the inner wall of the second compression chamber 37 to block the second air inlet 19 on the side wall of the second compression chamber 37. The second one-way valve 20 includes a fixing part 17 connected to the side wall of the second compression chamber 37. The fixing part 17 is provided with a connecting hole 23. One end of the fixing part 17 is provided with a first arc-shaped spring 18. One end of the first arc-shaped spring 18 is provided with a first sealing part 16 that blocks the second air inlet 19. The first arc-shaped spring 18 is rolled up, so that the first sealing part 16 has sufficient elasticity to seal the second air inlet 19.

[0045] It should be noted that all directional indicators (such as up, down, left, right, front, back, etc.) in the embodiments of the present invention are only used to explain the relative positional relationship and movement of each component in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indicator will also change accordingly.

[0046] Furthermore, in this invention, descriptions involving "first," "second," etc., are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this invention, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly and specifically defined.

[0047] In this invention, unless otherwise explicitly specified and limited, the terms "connection," "fixed," etc., should be interpreted broadly. For example, "fixed" can mean a fixed connection, a detachable connection, or an integral part; it can mean a mechanical connection or an electrical connection; it can mean a direct connection or an indirect connection through an intermediate medium; it can mean the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0048] Furthermore, the technical solutions of the various embodiments of the present invention can be combined with each other, but only if they are feasible for those skilled in the art. If the combination of technical solutions is contradictory or cannot be implemented, it should be considered that such combination of technical solutions does not exist and is not within the scope of protection claimed by the present invention.

Claims

1. An air suspension air supply output device characterized by comprising: include: Motor (1); A compression pump body (3) is set at one end of a motor (1), and the main shaft of the motor (1) is inserted into the compression pump body (3); The compressor body (3) is provided with an internal running cavity (25) and a first chamber (11) and a second chamber (12) respectively provided on both sides of the running cavity (25). The two ends of the running cavity (25) are respectively provided with a first compression chamber (36) and a second compression chamber (37). A first piston (35) is movably arranged in the first compression chamber (36), and a second piston (31) is arranged in the second compression chamber (37). The first piston (35) and the second piston (31) are driven by the main shaft of the motor (1) to move axially in the same direction. The first compression chamber (36) and the second compression chamber (37) are connected to the first chamber (11) through the first check valve (13) and the second check valve (20) respectively. The second chamber (12) is connected to the second compression chamber (37). The compression pump body (3) is equipped with an exhaust port (6) connected to the second chamber (12). An exhaust heat dissipation pipe (4) is connected to the exhaust port (6). The compression pump body (3) is also equipped with a secondary air inlet (8) connected to the first chamber (11). One end of the compression pump body (3) closes the first compression chamber (36) through the first end cap (5), and the other end of the compression pump body (3) closes the first chamber (11) and the second chamber (12) through the second end cap (10). A sealing ring is installed between the first end cap (5) and the second end cap (10) and the compressor body (3), wherein the sealing ring between the second end cap (10) and the compressor body (3) seals and separates the first chamber (11) and the second chamber (12); A connecting channel (39) is provided laterally on the first end cap (5), and the connecting channel (39) connects the first compression chamber (36) and the first one-way valve (13). The exhaust heat dissipation pipe (4) is a finned heat dissipation pipe. One end of the exhaust heat dissipation pipe (4) is inserted into one end of the fixing hole seat (27) on the compressor body (3). The other end of the fixing hole seat (27) is provided with a gas pipe connector.

2. The air suspension air supply outlet apparatus according to claim 1, characterized by: The compressor body (3) is provided with a spring exhaust port (9) that communicates with the running inner cavity (25), and the motor (1) is provided with a first-stage air inlet (2) at its end. The spring exhaust port (9) is connected to the first-stage air inlet (2).

3. The air suspension air supply outlet apparatus according to claim 1, characterized by: One end of the second piston (31) is inserted into one end of the first piston (35), and the end of the second piston (31) inserted into the first piston (35) is connected to the eccentric wheel (32) on the main shaft of the motor (1). One end of the first piston (35) is connected to the second piston (31) through a rotating pin (38).

4. The air suspension air supply outlet apparatus according to claim 1, characterized by: The compression pump body (3) is provided with a valve chamber (14) that communicates with the operating inner cavity (25), and a power limiting valve (7) is installed in the valve chamber (14).

5. The air suspension air supply outlet apparatus according to claim 1, characterized by: The first piston (35) has several first air inlets (41) that communicate with the running inner cavity (25), and the first piston (35) is equipped with a third one-way valve (28) that blocks the first air inlets (41).

6. The air suspension air supply output device according to claim 5, characterized in that: The second one-way valve (20) is installed on the inner wall of the second compression chamber (37) to block the second air inlet (19) on the side wall of the second compression chamber (37). The second one-way valve (20) includes a fixing part (17) connected to the side wall of the second compression chamber (37). The fixing part (17) is provided with a connecting hole (23). One end of the fixing part (17) is provided with a first arc-shaped spring (18). One end of the first arc-shaped spring (18) is provided with a first blocking part (16) to block the second air inlet (19).

7. The air suspension air supply output device according to claim 5, characterized in that: The first piston (35) has several first air inlets (41), and the third one-way valve (28) includes a center plate (22). A connecting hole (23) is provided in the middle of the center plate (22), and the two ends of the center plate (22) are respectively connected to second arc-shaped springs (24), so that the third one-way valve (28) is "H" shaped. The second arc-shaped springs (24) are provided with a second sealing part (21) corresponding to the first air inlet (41).

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