Stay shock air supply pump

Abstract

The application discloses a pull rope vibration air supplement pump and relates to the technical field of air springs. The pull rope vibration air supplement pump comprises a vibration air supplement pump, an air path selection device and a pull rope which are arranged in an air spring. The pull rope is retracted by a winding wheel when the air spring rises or is stretched when the air spring falls, so as to trigger air supplement or exhaust functions. The pull rope vibration air supplement pump is internally integrated with a vibration air supplement pump, a reversing valve and a pull rope structure and the like. Compared with a traditional air suspension system which adopts a decentralized layout, the application adopts an integrated design, integrates various air suspension devices into a single structure, significantly reduces the space occupation of a vehicle body, and saves redundant devices such as electromagnetic valves, sensors and electronic air pumps. Meanwhile, the linkage system is split into independent modules, automatic air supplement and exhaust functions under bumpy road conditions are realized through mechanical energy conversion, the system reliability is improved, and the later maintenance process is simplified.

Description

Technical Field

[0001] This invention relates to the field of air spring technology, and more particularly to mechanical integrated air springs. Background Technology

[0002] In automotive air suspension systems, the air replenishment device adjusts the suspension height by regulating the air volume within the air springs. Its core components include an air compressor, distribution valve, air tank, air piping, sensors (vehicle height sensor, vehicle acceleration sensor), and a controller (ECU). This results in air suspension systems being relatively large and expensive. In some mid-to-low-end models, to control costs, reduce size, and simplify the structure, traditional spring-damper systems are still used.

[0003] To meet the needs of users of mid-to-low-end vehicles for air damping, a cable-operated vibration air supply pump is proposed based on the above issues. Summary of the Invention

[0004] Therefore, this invention addresses the aforementioned problems by providing a cable-operated vibration air pump that synchronizes the expansion and contraction of air springs when a car experiences bumps, and utilizes the mechanical energy generated by the expansion and contraction to automatically replenish or exhaust air as the air inside the springs changes. This invention achieves this objective through the following technical solution: The device includes a vibration-assisted air pump housed within an air spring, an air path selection device, and a pull rope. The pull rope is retracted by a winding wheel as the air spring rises, or stretched as the air spring descends. The vibration-assisted air pump comprises: an air pump housing, a piston, a compression spring, an air outlet pipe, and an air inlet pipe. The piston moves within the air pump housing due to inertia. The compression spring is connected at both ends to the air pump housing and the piston, respectively. The air outlet pipe is connected to the air spring. Both the air outlet pipe and the air inlet pipe are equipped with one-way valves. The air path selection device includes an end cap, a housing, an end cap sealing ring, a sealing ring, end cap balls, a winding wheel balls, a pull rope pipe, a winding wheel, a coil spring, an air supply chamber, an exhaust chamber, a slow-release chamber, and a slow-release pipe. The end cap and the housing are connected by screws. An end cap sealing ring and a sealing ring are provided between the end cap and the housing. End cap balls are provided between the end cap and the winding wheel. A coil spring is provided inside the winding wheel. Winding wheel balls are provided between the winding wheel and the housing. A pull rope pipe is provided on the housing. The air intake pipe is connected to the air replenishment chamber; the air retardant chamber is connected to the air retardant pipe; the air retardant pipe is connected to the outside air; a one-way valve is provided between the exhaust chamber and the air spring so that they are connected to each other; the pull rope is connected to the winding wheel through the pull rope pipe; The easing chamber is always connected to the easing pipe and is filled with air. In a calm state, the easing chamber is neither connected to the replenishing chamber nor the exhaust chamber. When the rope is stretched, it drives the winding wheel to rotate clockwise. At this time, the easing chamber and the replenishing chamber are connected to each other to achieve air replenishment. When the coil spring is contracted, it drives the winding wheel to rotate counterclockwise. At this time, the easing chamber and the exhaust chamber are connected to each other to achieve exhaust.

[0005] The piston and the air pump housing are fitted with a clearance, and the piston moves up and down by compressing or stretching the compression spring through inertia, thereby achieving air replenishment.

[0006] Preferably, the easing chamber is always connected to the easing pipe and is filled with air; in a smooth state, the easing chamber is neither connected to the replenishing chamber nor the exhaust chamber; the stretching of the pull rope drives the winding wheel to rotate clockwise, at which time the easing chamber and the replenishing chamber are connected to each other to achieve replenishment of air; the contraction of the coil spring drives the winding wheel to rotate counterclockwise, at which time the easing chamber and the exhaust chamber are connected to each other to achieve exhaust.

[0007] Preferably, the piston is fitted with the air pump housing with a clearance, and the piston moves up and down by compressing or stretching the compression spring through inertia, thereby achieving air replenishment.

[0008] Beneficial effects of this invention: I. This invention achieves air replenishment and exhaust through vehicle bumps. Compared with traditional air suspension systems, it adopts an integrated design, which reduces the space occupied by the vehicle body and lowers the cost of equipment such as distribution valves, air tanks, air lines, sensors and electric air pumps. Second, this invention optimizes the linked air suspension system into multiple independent integrated air springs, improves system reliability through modular design, and simplifies the later maintenance and replacement process. Attached Figure Description

[0009] Figure 1 This is a schematic diagram of the overall structure of the present invention; Figure 2 This is a schematic diagram of the vibration air supply pump structure of the present invention; Figure 3 This is a side view of the gas path selection device of the present invention; Figure 4 This is a front view of the gas path selection device of the present invention; Figure 5 This is a schematic diagram of the shock absorber in normal condition according to the present invention; Figure 6 This is a schematic diagram of the air replenishment state of the shock absorber according to the present invention; Figure 7 This is a schematic diagram of the exhaust state of the shock absorber according to the present invention. Detailed Implementation

[0010] Preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings so that those skilled in the art can easily implement them. However, the present invention is not limited to the following embodiments and can be implemented in many different forms. For clarity, components unrelated to the present invention will be omitted from the drawings.

[0011] like Figure 1 As shown, the pull-cord vibration air pump includes a vibration air pump 104, an air path selection device 105, and a pull cord 102, which are installed inside the air spring 101. The pull cord 102 is retracted by the winding wheel as the air spring 101 rises, or is stretched as the air spring 101 falls.

[0012] like Figure 2 As shown, the vibration air supply pump 104 includes: an air supply pump housing 1, a piston 2, a compression spring 3, an air outlet pipe 4, and an air inlet pipe 5. The piston 2 moves within the air supply pump housing 1 by inertia, and the piston 2 and the air supply pump housing 1 are in clearance fit for a small amount of air flow, preventing the air supply pump housing 1 from overheating due to the movement of the piston 2. The two ends of the compression spring 3 are respectively connected to the air supply pump housing 1 and the piston 2, so that the piston 2 can return to a stable position after movement. The air outlet pipe 4 is connected to the air spring 101. Both the air outlet pipe 4 and the air inlet pipe 5 are equipped with one-way valves. The one-way valves restrict the air flow inside the air spring 101 to the vibration air supply pump 104, and also restrict the air flow inside the vibration air supply pump 104 to the air path selection device 105. When the air spring 101 is compressed, the piston 2 in the vibration air pump 104 lags behind the movement of the housing due to inertia, resulting in a downward compression of the relative displacement. Air inside the vibration air pump 104 enters the air spring 101. After the air spring 101 is compressed and resets, the elastic force of the compression spring 3 causes the piston 2 to reset. Thus, the movement of the piston 2 expands the internal space of the air pump housing 1. Since the pressure inside the air pump housing 1 decreases, the air path selection device 105 replenishes air to the vibration air pump 104 through the air inlet pipe 5.

[0013] like Figure 3 , 4As shown, the air path selection device 105 includes an end cap 15, a housing 16, an end cap sealing ring 9, a sealing ring 10, an end cap ball bearing 11, a winding wheel ball bearing 14, a pull rope pipe 18, a winding wheel 13, a coil spring 21, an air supply chamber 20, an exhaust chamber 19, a slow-release chamber 17, and a slow-release pipe 8. The end cap 15 is connected to the housing 16 by screws. An end cap sealing ring 9 and a sealing ring 10 are provided between the end cap 15 and the housing 16 to enhance the airtightness of the air path selection device 105. End cap ball bearings are provided between the end cap 15 and the winding wheel 13. 11. This reduces friction between the winding wheel 13 and the end cap 15. The winding wheel 13 is equipped with a coil spring 21. When the pull rope 102 is stretched and drives the winding wheel to rotate clockwise, the coil spring 21 will cause the winding wheel 13 to return to its original position counterclockwise. The winding wheel 13 and the housing 16 are provided with winding wheel balls 14, which reduces friction between the winding wheel 13 and the housing 16. The housing 16 is provided with a pull rope pipe 18. One end of the pull rope 102 is wound around the winding wheel 13 through the pull rope pipe 18, and the other end is connected to the damper 103 in the air spring 101.

[0014] like Figure 4 As shown, the air intake pipe 5 is connected to the air replenishment chamber 20; the air easing chamber 17 is always connected to the air easing pipe 8; the air easing pipe 8 is connected to the outside air; the exhaust chamber 19 and the air spring 101 are connected by a one-way valve, so that the gas in the exhaust chamber 19 cannot flow into the air spring 101; the pull rope 102 is wound and connected to the winding wheel 13 through the pull rope pipe 18.

[0015] Working principle of this invention: like Figure 5 As shown, under normal conditions, the car does not bounce much, the pull rope 102 is not compressed or stretched much with the air spring 101, the winding wheel 13 rotates at a small angle, the air supply chamber 20 cannot connect with the air release chamber 17, and the exhaust chamber 19 cannot connect with the air release chamber 17. At this time, there is neither air supply nor exhaust, which is called the normal state.

[0016] like Figure 6As shown, when the air spring 101 is leaking gas or the ambient temperature drops, the height of the air spring 101 decreases. When entering the air replenishment state: the car bumps, the air spring 101 is compressed, and the piston 2, due to inertia, compresses the compression spring 3 and moves downward. Air from inside the vibration air replenishment pump 104 enters the air spring 101. After the air spring 101 is compressed and resets, the elastic force of the compression spring 3 causes the piston 2 to reset, thus the piston 2 moves and expands the internal space of the air replenishment pump housing 1. At this time, the air path selection device 105 replenishes air to the vibration air replenishment pump 104 through the air intake pipe 5. During this movement, the pull rope 102 is stretched under the action of the damper 103, and the winding wheel 13 rotates clockwise to connect the intake air chamber 17 with the air replenishment chamber 20. Due to the decrease in pressure inside the air replenishment pump housing 1, external air enters the intake air chamber 17 through the intake air pipe 8 and then enters the vibration air replenishment pump 104 through the intake air pipe 5, realizing the air replenishment process.

[0017] like Figure 7 As shown, due to excessive inflation at the beginning or a rise in ambient temperature, the height of the air spring 101 increases. When entering the exhaust state, the car bumps, and the air spring 101 is compressed and stretched, causing the air to expand due to heat. This leads to an increase in the internal air pressure of the air spring 101. When the air spring 101 is compressed and stretched in the reverse direction, due to the large rise of the car body, the pull rope 102 contracts through the coil spring 21 under the action of the damper 103. At this time, the winding wheel 13 rotates counterclockwise, connecting the air venting chamber 17 with the exhaust chamber 19. Due to the increase in the internal air pressure of the air spring 101, the air inside the air spring 101 enters the air venting chamber 17 with the exhaust chamber 19 and is then discharged into the atmosphere through the air venting pipe 8.

[0018] In the description of this invention, it should be understood that the terms "coaxial," "bottom," "one end," "top," "middle," "other end," "upper," "side," "top," "inner," "front," "center," "both ends," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limiting this invention.

[0019] In this invention, unless otherwise explicitly specified and limited, the terms "installation," "setting," "connection," "fixing," "screw connection," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal connection 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.

[0020] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A wire-operated vibration air pump, characterized in that: The system includes a vibration-assisted air pump (104) housed within an air spring (101), an air path selection device (105), and a pull rope (102). The pull rope (102) is either retracted by a winding wheel as the air spring (101) rises or is stretched as the air spring (101) descends. The vibration-assisted air pump (104) comprises: an air pump housing (1), a piston (2), a compression spring (3), an air outlet pipe (4), and an air inlet pipe (5). The piston (2) moves within the air pump housing (1) due to inertia. The compression spring (3) is connected at both ends to the air pump housing (1) and the piston (2), respectively. The air outlet pipe (4) is connected to the air spring (101). Both the air outlet pipe (4) and the air inlet pipe (5) are equipped with one-way valves. The air path selection device (105) includes an end cap (15), a housing (16), an end cap sealing ring (9), a sealing ring (10), an end cap ball bearing (11), a winding wheel ball bearing (14), a pull rope pipe (18), a winding wheel (13), a coil spring (21), an air supply chamber (20), an exhaust chamber (19), a slow air chamber (17), and a slow air pipe (8). The end cap (15) and the housing (16) are connected by screws. An end cap sealing ring (9) and a sealing ring (10) are provided between the end cap (15) and the housing (16). An end cap ball bearing (11) is provided between the end cap (15) and the winding wheel (13). A coil spring (21) is provided inside the winding wheel (13). A winding wheel ball bearing (14) is provided between the winding wheel (13) and the housing (16). A pull rope pipe (18) is provided on the housing (16). The air intake pipe (5) is connected to the air replenishment chamber (20); the air easing chamber (17) is connected to the air easing pipe (8); the air easing pipe (8) is connected to the outside air; the exhaust chamber (19) is connected to the air spring (101) by a one-way valve; the pull rope (102) is wound and connected to the winding wheel (13) through the pull rope pipe (18).

2. The wire-operated vibration air pump according to claim 1, characterized in that: The easing chamber (17) is always connected to the easing pipe (8) and is filled with air. In a flat state, the easing chamber (17) is not connected to either the replenishing chamber (20) or the exhaust chamber (19). The stretching of the pull rope (102) causes the winding wheel (13) to rotate clockwise. At this time, the easing chamber (17) and the replenishing chamber (20) are connected to each other to achieve replenishment. The contraction of the coil spring (14) causes the winding wheel (13) to rotate counterclockwise. At this time, the easing chamber (17) and the exhaust chamber (19) are connected to each other to achieve exhaust.

3. The wire-operated vibration air pump according to claim 1, characterized in that: The piston (2) is fitted with the air pump housing (1) with a clearance, and compresses or stretches the compression spring (3) by inertia to achieve up and down movement, thereby achieving air replenishment.

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