Pneumatic pump shock absorber, suspension assembly and vehicle

Abstract

The utility model discloses a kind of air pump type shock absorber, suspension assembly and vehicle, it is related to the field of shock absorber. Air pump type shock absorber includes: shell, separator, piston, separator is movably arranged in shell and with shell jointly define gas cavity, medium cavity, medium is stored in medium cavity, gas is stored in gas cavity;At least part of piston is movably arranged in medium cavity to separate medium cavity into first chamber and second chamber, second chamber is located between first chamber, gas cavity, gas cavity can be communicated with shell outside, the volume of gas cavity can be changed when piston acts, to make gas cavity inhale or discharge gas in gas cavity. Thus, the air pump type shock absorber proposed in the present application can have air pump function on the basis of having damping function, so that the air pump type shock absorber can be used as the air supply component of suspension assembly, at least part of the air supply system of existing air suspension can be omitted, which is beneficial to reduce energy consumption, simplify structure and reduce cost.

Description

Technical Field

[0001] This utility model relates to the field of shock absorbers, and in particular to an air pump type shock absorber, a suspension assembly, and a vehicle. Background Technology

[0002] In related technologies, existing automotive air suspension systems require an air supply system to provide compressed gas to meet the air demand for suspension load-bearing and height adjustment. However, the main components of the air supply system are air compressors and compressor controllers, which are electrically driven and require external power to operate, resulting in high energy consumption, complex structure, and high operating costs. Utility Model Content

[0003] The present invention aims to solve at least one of the technical problems existing in the prior art. To this end, one objective of the present invention is to provide an air pump type shock absorber that, in addition to having a shock absorption function, also has an air pump function and can be used as an air supply component for the suspension assembly.

[0004] This utility model further proposes a suspension assembly.

[0005] This utility model further proposes a vehicle.

[0006] The air pump type vibration damper according to this utility model includes: a housing, a separator, and a piston. The separator is movably disposed in the housing and together with the housing defines an air chamber and a medium chamber. The medium chamber stores a medium, and the air chamber stores gas. At least a portion of the piston is movably disposed in the medium chamber to divide the medium chamber into a first chamber and a second chamber. The second chamber is located between the first chamber and the air chamber. The air chamber can communicate with the outside of the housing. When the piston moves, it can change the volume of the air chamber to allow the air chamber to draw in air or discharge the gas in the air chamber.

[0007] According to the present invention, the air pump type shock absorber has both shock absorption function and air pump function, so that the air pump type shock absorber can be used as the air supply component of the suspension assembly, which can eliminate at least part of the air supply system of the existing air suspension, which is beneficial to reduce energy consumption, simplify structure and reduce cost.

[0008] In some examples of this utility model, the air pump type vibration damper further includes: a pressure limiting valve, the housing having an exhaust port, the exhaust port being connected between the air chamber and the outside of the housing, and the pressure limiting valve being provided corresponding to the exhaust port.

[0009] In some examples of this utility model, the air pump type vibration damper further includes: a one-way valve, the housing has an air inlet, the air inlet is connected between the air chamber and the outside of the housing, and the one-way valve is provided corresponding to the air inlet and configured to conduct unidirectionally from the air inlet to the air chamber.

[0010] In some examples of this utility model, the air pump type vibration damper further includes: a control valve, which is disposed in the second cavity and divides the second cavity into a first sub-cavity and a second sub-cavity, wherein the first sub-cavity is located between the first cavity and the second sub-cavity, and the first sub-cavity can communicate with the second sub-cavity through the control valve.

[0011] In some examples of this invention, the control valve is configured as a damping valve.

[0012] In some examples of this utility model, the piston includes a rod and a head, the head is connected to the rod, the head is disposed in the medium cavity and divides the medium cavity into a first cavity and a second cavity, and the head is configured as a damping valve.

[0013] In some examples of this utility model, the housing includes: a first sub-housing and a second sub-housing, the second sub-housing being sleeved on the outside of the first sub-housing, the partition being disposed between the second sub-housing and the first sub-housing and surrounding the first sub-housing, the first sub-housing, the second sub-housing, and the partition jointly defining the air chamber, the first sub-housing and the piston jointly defining the first cavity, the first sub-housing, the piston, and the control valve jointly defining the first sub-cavity, and the first sub-housing, the second sub-housing, the control valve, and the partition jointly defining the second sub-cavity.

[0014] In some examples of this invention, one end of the first sub-housing is configured as an open end along the direction of piston movement, and the control valve is located at the open end.

[0015] The suspension assembly according to this utility model includes the aforementioned air pump type shock absorber.

[0016] The vehicle according to this utility model includes the suspension assembly described above.

[0017] Additional aspects and advantages of this invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0018] The above and / or additional aspects and advantages of this utility model will become apparent and readily understood from the description of the embodiments taken in conjunction with the following drawings, in which:

[0019] Figure 1 This is a cross-sectional view of the air pump type vibration damper according to an embodiment of the present utility model;

[0020] Figure 2 This is a flowchart (closed type) of the suspension assembly according to an embodiment of the present utility model;

[0021] Figure 3 This is a flowchart (open type) of the suspension assembly according to an embodiment of the present utility model.

[0022] Figure label:

[0023] Suspension assembly 100; Air pump type shock absorber 200;

[0024] Shell 1; First sub-shell 11; Open end 111; Second sub-shell 12; Gas cavity 13; Medium cavity 14; First cavity 141; Second cavity 142; First sub-cavity 1421; Second sub-cavity 1422;

[0025] Piston 2; Rod 21; Head 22;

[0026] Separator 3;

[0027] Airbag 4;

[0028] First control valve 5;

[0029] First check valve 6;

[0030] First pressure relief valve 7;

[0031] Third pressure relief valve 8;

[0032] Dryer 9;

[0033] Pressure relief valve 10;

[0034] One-way valve 20;

[0035] Control valve 30;

[0036] First gas storage container 40;

[0037] Second gas storage container 50. Detailed Implementation

[0038] The embodiments of this utility model are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this utility model, and should not be construed as limiting this utility model.

[0039] The following is for reference. Figures 1-3 Description of an air pump type vibration damper 200 according to an embodiment of the present utility model.

[0040] like Figure 1 As shown, the air pump type shock absorber 200 according to an embodiment of the present utility model includes: a housing 1, a separator 3, and a piston 2. The separator 3 is movably disposed on the housing 1 and together with the housing 1 defines an air chamber 13 and a medium chamber 14. The medium chamber 14 stores a medium, and the air chamber 13 stores gas. At least a portion of the piston 2 is movably disposed on the medium chamber 14 to divide the medium chamber 14 into a first chamber 141 and a second chamber 142. The second chamber 142 is located between the first chamber 141 and the air chamber 13. The air chamber 13 can communicate with the outside of the housing 1. When the piston 2 moves, it can change the volume of the air chamber 13 so that the air chamber 13 can draw in air or discharge the gas in the air chamber 13.

[0041] The separator 3 is movably disposed on the housing 1, meaning that the separator 3 is disposed on the housing 1 and is movable relative to the housing 1. In some embodiments of this application, the housing 1 can be constructed as an inner housing and an outer housing that are fitted together. The separator 3 can be constructed as an annular member and disposed between the inner housing and the outer housing, and the separator 3 is movable relative to both the inner and outer housings. The separator 3 and the housing 1 together define an air cavity 13 and a medium cavity 14. In some embodiments of this application, the separator 3, the inner housing, and the outer housing together define the air cavity 13 and the medium cavity 14. The air cavity 13 stores gas, and the medium cavity 14 stores a medium. In some embodiments of this application, the gas in the air cavity 13 can be configured as air, and the medium in the medium cavity 14 can be configured as oil.

[0042] As some embodiments of this application, the separator 3 is used to separate the gas and the medium, and can move with changes in the volume of the gas.

[0043] At least a portion of the piston 2 is movably disposed in the medium cavity 14. As some embodiments of this application, a portion of the piston 2 is housed in the medium cavity 14 and is movable relative to the medium cavity 14. As some embodiments of this application, along a first direction (i.e.... Figure 1 (As shown in the X direction), one end of piston 2 is connected to the vehicle body, and the other end of piston 2 is placed in the medium cavity 14. As some embodiments of this application, piston 2 is entirely housed in the medium cavity 14 and is movable relative to the medium cavity 14.

[0044] Piston 2 divides the medium chamber 14 into a first chamber 141 and a second chamber 142, with the second chamber 142 located between the first chamber 141 and the air chamber 13. As some embodiments of this application, along the first direction (i.e....) Figure 1As shown in the X direction), the first cavity 141, the second cavity 142, and the air cavity 13 are arranged sequentially. The piston 2 is configured such that the second cavity 142 faces the wall of the first cavity 141, and the piston 2 is configured such that the first cavity 141 faces the wall of the second cavity 142. As some embodiments of this application, the air cavity 13 is sleeved on the outside of the first cavity 141, and along the first direction (i.e., Figure 1 (As shown in the X direction), air chamber 13 and first chamber 141 are located at the same end of second chamber 142.

[0045] The air chamber 13 is connected to the outside of the housing 1, and gas can flow between the air chamber 13 and the outside of the housing 1. As some embodiments of this application, the gas in the air chamber 13 is composed of air, which can flow from the air chamber 13 to the outside of the housing 1, and vice versa. When the piston 2 is actuated, it can change the volume of the air chamber 13 to allow the air chamber 13 to draw in or expel gas. For example, when the volume of the air chamber 13 increases, the air chamber 13 draws in gas, and gas flows from the outside of the housing 1 to the air chamber 13; when the volume of the air chamber 13 decreases, the gas in the air chamber 13 is expelled, and gas flows from the air chamber 13 to the outside of the housing 1.

[0046] It should be noted that piston 2 can move within the medium cavity 14. For example, piston 2 can move within the medium cavity 14 along a first direction (i.e., Figure 1 When piston 2 moves (in the X direction as shown), and is compressed, the medium in medium chamber 14 and the gas in air chamber 13 both exert resistance on piston 2, slowing down its movement. When piston 2 is pulled, the medium in medium chamber 14 and the gas in air chamber 13 both exert resistance on piston 2, slowing down its movement. This achieves the vibration damping function of the air pump type vibration damper 200. Simultaneously, the movement of piston 2 changes the volume of air chamber 13, allowing air to be drawn into or expelled from air chamber 13, thus achieving the air pump function.

[0047] Specifically, when piston 2 is compressed, the medium in the second chamber 142 and the gas in the air chamber 13 both exert resistance on piston 2, slowing down its movement. When piston 2 is pulled, the medium in the first chamber 141 and the gas in the air chamber 13 both exert resistance on piston 2, slowing down its movement. This achieves the vibration damping function of the air pump type vibration damper 200. Simultaneously, when piston 2 is compressed, it compresses the second chamber 142, increasing the oil pressure within it. This increases the pressure, pushing the separator 3 to move and compress the air chamber 13 (reducing its volume), thus expelling the gas from the air chamber 13 for air supply. When piston 2 is pulled, it compresses the first chamber 141, decreasing the oil pressure in the second chamber 142. The gas in the air chamber 13 then pushes the separator 3 to move, expanding the volume of the air chamber 13 to allow it to draw in air, thus achieving the air pump function.

[0048] Compared to existing shock absorbers, the air pump type shock absorber 200 of this application achieves air pump function while retaining the shock absorption function, thereby eliminating at least part of the air supply system of existing air suspensions. For example, the compressor, compressor controller and other components of the air supply system of air suspensions can be omitted, which can simplify the components of the air supply system, which is beneficial to saving costs and reducing weight, and has a simple structure. In addition, it can also achieve green energy supply. It is understood that with the reciprocating motion of piston 2, the air pump type shock absorber 200 can absorb vibration energy and provide compressed gas at the same time.

[0049] As some embodiments of this application, the separator 3 is constructed as an oil and gas isolation sheet.

[0050] Therefore, the air pump type shock absorber 200 proposed in this application can have both shock absorption function and air pump function, so that the air pump type shock absorber 200 can be used as the air supply component of the suspension assembly 100, which can omit at least part of the air supply system of the existing air suspension, which is beneficial to reduce energy consumption, simplify structure and reduce cost.

[0051] In some embodiments of this utility model, such as Figure 1 As shown, the air pump type shock absorber 200 also includes: a pressure relief valve 10, and the housing 1 has an exhaust port that connects the air chamber 13 to the outside of the housing 1. The pressure relief valve 10 is set corresponding to the exhaust port.

[0052] In this embodiment, the housing 1 has an exhaust port. As some embodiments of this application, the housing 1 can be constructed as an inner housing and an outer housing that are fitted together. The outer housing has an exhaust port that connects the air cavity 13 to the outside of the housing 1.

[0053] The pressure relief valve 10 is provided corresponding to the exhaust port. In some embodiments of this application, the exhaust port is connected to the air chamber 13, and the pressure relief valve 10 is provided between the exhaust port and the air chamber 13. In some embodiments of this application, the pressure relief valve 10 is provided at the exhaust port. In some embodiments of this application, the exhaust port is connected to the air chamber 13 and the exhaust port is connected to the pipeline, and the pressure relief valve 10 is provided in the pipeline (i.e., in the pipeline connected to the exhaust port).

[0054] It is understood that the pressure relief valve 10 will only open when the air pressure reaches the opening value of the pressure relief valve 10. As some embodiments of this application, the pressure relief valve 10 can be constructed as a one-way pressure relief valve, which is configured to be unidirectionally open from the air chamber 13 to the exhaust port, so that gas can flow through the pressure relief valve 10 to the outside of the housing 1, but prevents gas from flowing from the outside of the housing 1 to the air chamber 13 through the pressure relief valve 10.

[0055] By setting the pressure limiting valve 10, the gas flowing out of the air chamber 13 can have a certain pressure to meet the gas demand of the air-using components. For example, the gas flowing out of the air chamber 13 can flow to the airbag 4 of the suspension assembly 100. By setting the pressure limiting valve 10, the gas flowing out of the air chamber 13 can meet the gas demand of the airbag 4.

[0056] In some embodiments of this utility model, such as Figure 1 As shown, the air pump type shock absorber 200 also includes: a one-way valve 20, the housing 1 has an air inlet, the air inlet is connected between the air chamber 13 and the outside of the housing 1, and the one-way valve 20 is set corresponding to the air inlet and is configured to conduct unidirectionally from the air inlet to the air chamber 13.

[0057] In this embodiment, the housing 1 has an air inlet. As some embodiments of this application, the housing 1 can be constructed as an inner housing and an outer housing that are fitted together. The outer housing has an air inlet, which is connected between the air cavity 13 and the outside of the housing 1.

[0058] One-way valve 20 is provided corresponding to the air inlet. In some embodiments of this application, the air inlet is connected to the air chamber 13, and the one-way valve 20 is provided between the air inlet and the air chamber 13. In some embodiments of this application, the one-way valve 20 is provided at the air inlet. In some embodiments of this application, the air inlet is connected to the air chamber 13 and the air inlet is connected to the pipeline, and the one-way valve 20 is provided in the pipeline (i.e., in the pipeline connected to the air inlet).

[0059] The one-way valve 20 is configured to allow one-way flow from the air inlet to the air chamber 13, meaning that gas can flow from the outside of the housing 1 to the air chamber 13 through the one-way valve 20, but gas cannot flow from the air chamber 13 to the outside of the housing 1 through the one-way valve 20.

[0060] By setting a one-way valve 20, external gas in the housing 1 can flow into the air chamber 13 through the air inlet, and the gas in the air chamber 13 cannot flow out of the housing 1 through the air inlet, reducing the risk of backflow of gas at the air inlet and improving the reliability of the air pump type shock absorber 200.

[0061] In some embodiments of this utility model, such as Figure 1 As shown, the air pump type shock absorber 200 also includes: a control valve 30, which is located in the second chamber 142 and divides the second chamber 142 into a first sub-chamber 1421 and a second sub-chamber 1422. The first sub-chamber 1421 is located between the first chamber 141 and the second sub-chamber 1422, and the first sub-chamber 1421 can communicate with the second sub-chamber 1422.

[0062] In this embodiment, the control valve 30 is disposed in the second chamber 142. As some embodiments of this application, the housing 1 can be constructed as an inner housing and an outer housing that are sleeved together. The control valve 30 can be fixedly connected to the inner housing. For example, the connection method between the control valve 30 and the inner housing can be, but is not limited to, welding, snap-fit, bolting, etc. The control valve 30 divides the second chamber 142 into a first sub-chamber 1421 and a second sub-chamber 1422, with the first sub-chamber 1421 located between the first chamber 141 and the second sub-chamber 1422. As some embodiments of this application, along the first direction (i.e.... Figure 1 As shown in the X direction), the first cavity 141, the first sub-cavity 1421, the second sub-cavity 1422, and the air cavity 13 are arranged sequentially. In some embodiments of this application, the air cavity 13 is fitted outside the first cavity 141, and the second sub-cavity 1422 is fitted outside the first sub-cavity 1421, and along the first direction (i.e., along the X direction)... Figure 1 (As shown in the X direction), air chamber 13 and first chamber 141 are both located at the same end of first sub-cavity 1421 and second sub-cavity 1422.

[0063] The first sub-cavity 1421 and the second sub-cavity 1422 can be connected by the control valve 30. As some embodiments of this application, the control valve 30 can be configured as a mechanical valve or a solenoid valve.

[0064] It should be noted that along the first direction (i.e. Figure 1 (As shown in the X direction), one end of the separator 3 is constructed as the wall of the air chamber 13, and the other end of the separator 3 is constructed as the wall of the second sub-chamber 1422. When the piston 2 moves within the medium chamber 14, it can change the volume of the first sub-chamber 1421, allowing the medium to flow between the first sub-chamber 1421 and the second sub-chamber 1422, thereby changing the volume of the second sub-chamber 1422 and consequently changing the volume of the air chamber 13. Specifically, along the first direction (i.e., Figure 1 (As shown in the X direction), when piston 2 is compressed, it compresses the first sub-cavity 1421, reducing its volume. When the volume of the first sub-cavity 1421 decreases, the pressure of the medium in the first sub-cavity 1421 increases. The medium flows from the first sub-cavity 1421 to the second sub-cavity 1422 through the control valve 30. The pressure of the medium in the second sub-cavity 1422 increases and its volume decreases, thereby pushing the separator 3 to reduce the volume of the air chamber 13. When piston 2 is pulled, the volume of the first sub-cavity 1421 increases. The medium in the second sub-cavity 1422 flows back to the first sub-cavity 1421 through the control valve 30. The pressure of the medium in the second sub-cavity 1422 decreases and its volume increases. The gas in the air chamber 13 pushes the separator 3, increasing the volume of the air chamber 13.

[0065] By setting the control valve 30, the medium can flow between the first sub-cavity 1421 and the second sub-cavity 1422. Compared with the technical solution of completely isolating the first sub-cavity 1421 and the second sub-cavity 1422, the air pump type shock absorber 200 can have excellent vibration damping performance. Furthermore, the compressive damping force of the air pump type shock absorber 200 can be controlled by adjusting the control valve 30. For mechanical control valve 30, the adaptability of air pump type shock absorber 200 can be improved. For electronic control valve 30, not only can the adaptability of air pump type shock absorber 200 be improved, but the suspension assembly 100 using air pump type shock absorber 200 can also have excellent comfort performance.

[0066] In some embodiments of this utility model, such as Figure 1 As shown, control valve 30 is constructed as a damping valve.

[0067] The damping valve provides damping force to the air-pumped vibration damper 200. By adjusting the gap between the valve core and the valve seat, the flow rate of the medium can be changed, thus controlling the magnitude of the damping force and consequently the performance of the air-pumped vibration damper 200. This configuration enables the air-pumped vibration damper 200 to have excellent vibration reduction performance. Furthermore, the damping valve has a long service life and a low failure rate, which helps improve the reliability of the air-pumped vibration damper 200.

[0068] In some embodiments of this utility model, such as Figure 1 As shown, the piston 2 includes a rod 21 and a head 22. The head 22 is connected to the rod 21. The head 22 is located in the medium cavity 14 and divides the medium cavity 14 into a first cavity 141 and a second cavity 142. The head 22 is configured as a damping valve.

[0069] In some embodiments of this application, the head 22 and the rod 21 can be fixedly connected. For example, the connection method between the head 22 and the rod 21 can be, but is not limited to, welding, snap-fit, bolting, etc., or the head 22 and the rod 21 can be integrally formed. The head 22 is disposed in the medium cavity 14 and divides the medium cavity 14 into a first cavity 141 and a second cavity 142. In some embodiments of this application, the housing 1 can be constructed as an inner housing and an outer housing that are sleeved together. The head 22 is disposed in the inner housing, and the shape of the head 22 is adapted to the shape of the inner housing and has the same size. The head 22 divides the medium cavity 14 into a first cavity 141 and a second cavity 142.

[0070] The head 22 is configured as a damping valve. In some embodiments of this application, the head 22 is snapped into the rod 21, and the damping valve is snapped into one end of the rod 21. The shape of the damping valve is adapted to the shape of the inner shell and the same size, so as to divide the medium chamber 14 into a first chamber 141 and a second chamber 142. The first chamber 141 and the second chamber 142 are connected through the damping valve, and the medium can flow between the first chamber 141 and the second chamber 142 through the head 22.

[0071] By configuring the head 22 as a damping valve, the medium can flow through the head 22 between the first chamber 141 and the second chamber 142, thereby enabling the air pump type vibration damper 200 to have excellent vibration damping performance. Furthermore, the damping force of the air pump type vibration damper 200 can be provided jointly by the control valve 30 and the head 22 of the piston 2, thereby enabling the air pump type vibration damper 200 to have even better vibration damping performance.

[0072] In some embodiments of this utility model, such as Figure 1 As shown, the housing 1 includes: a first sub-housing 11 and a second sub-housing 12. The second sub-housing 12 is sleeved on the outside of the first sub-housing 11. A separator 3 is disposed between the second sub-housing 12 and the first sub-housing 11 and surrounds the first sub-housing 11. The first sub-housing 11, the second sub-housing 12, and the separator 3 together define an air chamber 13. The first sub-housing 11 and the piston 2 together define a first chamber 141. The first sub-housing 11, the piston 2, and the control valve 30 together define a first sub-chamber 1421. The first sub-housing 11, the second sub-housing 12, the control valve 30, and the separator 3 together define a second sub-chamber 1422.

[0073] The housing 1 includes a first sub-housing 11 (i.e., the inner housing mentioned above) and a second sub-housing 12 (i.e., the outer housing mentioned above). The second sub-housing 12 is sleeved on the outside of the first sub-housing 11. As some embodiments of this application, the first sub-housing 11 and the second sub-housing 12 are fixedly connected. For example, the connection method between the first sub-housing 11 and the second sub-housing 12 can be, but is not limited to, welding connection, snap-fit ​​connection, bolt connection, etc., or the first sub-housing 11 and the second sub-housing 12 can be integrally formed.

[0074] In some embodiments of this application, the second sub-shell 12 is formed with an air inlet, which connects the air cavity 13 and the outside of the shell 1. The air cavity 13 and the outside of the shell 1 can be connected through the air inlet. In some embodiments of this application, the second sub-shell 12 is formed with an exhaust port, which connects the air cavity 13 and the outside of the shell 1. The air cavity 13 and the outside of the shell 1 can be connected through the exhaust port.

[0075] The separator 3 is disposed between the second sub-shell 12 and the first sub-shell 11 and surrounds the first sub-shell 11. As some embodiments of this application, the separator 3 can be constructed as a ring. The separator 3 is disposed between the second sub-shell 12 and the first sub-shell 11 and is sleeved on the outside of the first sub-shell 11. The separator 3 is movable relative to both the second sub-shell 12 and the first sub-shell 11.

[0076] The first sub-shell 11, the second sub-shell 12, and the separator 3 together define the air chamber 13. As some embodiments of this application, the air chamber 13 can be constructed as an annular cavity and disposed around the first sub-shell 11. The first sub-shell 11 and the piston 2 together define the first cavity 141.

[0077] The first sub-housing 11, piston 2, and control valve 30 together define the first sub-cavity 1421. In some embodiments of this application, piston 2 and control valve 30 are respectively constructed as two opposing walls of the first sub-cavity 1421. The first sub-housing 11, second sub-housing 12, control valve 30, and partition 3 together define the second sub-cavity 1422. In some embodiments of this application, a portion of the second sub-cavity 1422 surrounds the first sub-housing 11. In some embodiments of this application, air chamber 13 surrounds the outside of the first cavity 141, and the second sub-cavity 1422 surrounds the outside of the first sub-cavity 1421.

[0078] It should be noted that the gas cavity 13 is connected to the outside of the shell 1 and stores gas inside. The first cavity 141, the first sub-cavity 1421, and the second sub-cavity 1422 are connected in sequence and each stores a medium inside.

[0079] This configuration makes the structure of the air pump type vibration damper 200 reasonable, enabling it to reliably achieve vibration damping and air pump functions. Furthermore, it makes the structure of the air pump type vibration damper 200 compact and easy to arrange.

[0080] In some embodiments of this utility model, such as Figure 1 As shown, along the direction of movement of piston 2 (i.e., the first direction mentioned above), Figure 1 (As shown in the X direction), one end of the first sub-housing 11 is configured as an open end 111, and the control valve 30 is located at the open end 111.

[0081] Wherein, along the moving direction of piston 2 (i.e., the first direction mentioned above, Figure 1(As shown in the X direction), one end of the first sub-housing 11 is configured as an open end 111, and the control valve 30 is disposed at the open end 111. The control valve 30 and the open end 111 can be fixedly connected. For example, the connection method between the control valve 30 and the open end 111 can be, but is not limited to, welding connection, snap-fit ​​connection, bolt connection, etc. By making one end of the first sub-housing 111 an open end 111, it is convenient to install the control valve 30, the assembly is simple, and the assembly efficiency of the air pump type vibration damper 200 can be improved.

[0082] The suspension assembly 100 according to an embodiment of the present invention includes the air pump type shock absorber 200 described in the above embodiment. The air pump type shock absorber 200 proposed in this application, while possessing shock absorption functionality, also functions as an air pump. Therefore, the air pump type shock absorber 200 can serve as an air supply component for the suspension assembly 100, eliminating at least a portion of the existing air supply system of the air suspension, which is beneficial for reducing energy consumption, simplifying the structure, and lowering costs.

[0083] It should be noted that the suspension assembly 100 of this application removes the air compressor, compressor controller and other components of the existing air supply system, and adopts an air pump type shock absorber 200 as the air supply component. While retaining the shock absorption function, it can also provide compressed air to the suspension assembly 100, and has the function of an air pump. Compared with the existing air supply system, which has a complex structure, high cost and heavy weight, the air pump type shock absorber 200 of this application can achieve green energy supply, simplify the suspension assembly 100, reduce energy consumption and save costs.

[0084] In some embodiments of this utility model, such as Figure 2 and Figure 3 As shown, the suspension assembly 100 includes: a first control valve 5, an airbag 4, and a first air reservoir 40. The first control valve 5 is connected between the airbag 4 and the first air reservoir 40 to control whether the airbag 4 and the first air reservoir 40 are connected.

[0085] A first control valve 5 is connected between the airbag 4 and the first air reservoir 40 to control whether the airbag 4 and the first air reservoir 40 are connected. It is understood that the first air reservoir 40 is used to store the gas supplied by the air pump-type shock absorber 200. As some embodiments of this application, the first control valve 5 can be configured as a solenoid valve, connected between the airbag 4 and the first air reservoir 40 to control whether the airbag 4 and the first air reservoir 40 are connected. When the airbag 4 needs air supply, the first control valve 5 connects the airbag 4 and the first air reservoir 40, allowing the gas in the first air reservoir 40 to be supplied to the airbag 4. The airbag 4 is used to support the vehicle body and buffer vibrations, while the air pump-type shock absorber 200 absorbs vibration energy.

[0086] In some embodiments of this utility model, such as Figure 2 and Figure 3As shown, the suspension assembly 100 also includes a first one-way valve 6, which is connected between the airbag 4 and the first air reservoir 40. The first one-way valve 6 is configured to conduct unidirectionally from the first air reservoir 40 to the airbag 4.

[0087] In this embodiment, the first one-way valve 6 is connected between the airbag 4 and the first gas storage container 40. In some embodiments of this application, the first one-way valve 6 can be located between the first control valve 5 and the first gas storage container 40. That is, along the gas flow direction, the first gas storage container 40, the first one-way valve 6, the first control valve 5, and the airbag 4 are arranged sequentially. The first one-way valve 6 is configured to conduct unidirectionally from the first gas storage container 40 to the airbag 4, meaning that gas can flow from the first gas storage container 40 to the airbag 4, and gas cannot flow from the airbag 4 to the first gas storage container 40.

[0088] As some embodiments of this application, the first check valve 6 may be configured as a mechanical check valve.

[0089] By setting the first one-way valve 6, gas can flow unidirectionally from the first gas storage container 40 to the airbag 4, reducing the risk of gas backflow and improving the reliability of the suspension assembly 100.

[0090] In some embodiments of this utility model, such as Figure 2 and Figure 3 As shown, the first one-way valve 6 is configured as a one-way relief valve, which is configured to open when the gas pressure in the first gas storage container 40 is greater than or equal to a first preset value.

[0091] The first one-way valve 6 is configured as a one-way overflow valve. When the air pressure in the first air reservoir 40 is greater than or equal to a first preset value, the one-way overflow valve is open, allowing gas to flow from the first air reservoir 40 to the airbag 4. When the air pressure in the first air reservoir 40 is less than the first preset value, the one-way overflow valve is not open, preventing gas from flowing from the first air reservoir 40 to the airbag 4. This configuration ensures that the air pressure flowing from the first air reservoir 40 into the airbag 4 is relatively high, meeting the requirements of the airbag 4 and enabling it to effectively support the vehicle body and buffer vibrations.

[0092] In some embodiments of this utility model, such as Figure 2 and Figure 3 As shown, the suspension assembly 100 also includes: a first pressure relief valve 7, which is located in the first air storage container 40. The first pressure relief valve 7 is configured to allow unidirectional flow from the first air storage container 40 to the outside of the first air storage container 40 when the air pressure inside the first air storage container 40 is greater than or equal to a second preset value.

[0093] The first pressure relief valve 7 is located in the first gas storage container 40. When the gas pressure in the first gas storage container 40 is greater than or equal to the second preset value, the first pressure relief valve 7 is unidirectionally open from the first gas storage container 40 to the outside of the first gas storage container 40, and the gas can flow from the first gas storage container 40 to the outside of the first gas storage container 40.

[0094] By setting a first pressure limiting valve 7 and configuring it to open when the gas pressure inside the first gas storage container 40 is greater than or equal to a second preset value, the pressure inside the first gas storage container 40 can be kept below the second preset value, reducing the risk of overpressure damage to the first gas storage container 40. At the same time, it can maintain stable system pressure, protect the stable operation of other components of the suspension assembly 100, and by configuring the first pressure limiting valve 7 to be unidirectionally open from the first gas storage container 40 to the outside of the first gas storage container 40, the risk of gas backflow can be reduced.

[0095] In some embodiments of this utility model, the exhaust port is connected between the air chamber 13 and the first air storage container 40, and the pressure limiting valve 10 is provided corresponding to the exhaust port. The pressure limiting valve 10 is configured to conduct unidirectionally from the air chamber 13 to the first air storage container 40 when the air pressure in the air chamber 13 is greater than or equal to a third preset value.

[0096] In some embodiments of this application, the pressure limiting valve 10 is provided corresponding to the exhaust port. The exhaust port is connected to the air chamber 13. The pressure limiting valve 10 is provided between the exhaust port and the air chamber 13. In some embodiments of this application, the pressure limiting valve 10 is provided at the exhaust port. In some embodiments of this application, the exhaust port is connected to the air chamber 13 and the exhaust port is connected to the pipeline. The pressure limiting valve 10 is provided in the pipeline (i.e., in the pipeline connected to the exhaust port). The pipeline is connected to the first gas storage container 40.

[0097] The pressure relief valve 10 is configured to allow unidirectional flow from the air chamber 13 to the first gas storage container 40 when the air pressure in the air chamber 13 is greater than or equal to the third preset value. In other words, when the air pressure in the air chamber 13 is greater than or equal to the third preset value, gas can flow from the air chamber 13 through the pressure relief valve 10 to the first gas storage container 40, and gas cannot flow from the first gas storage container 40 through the pressure relief valve 10 to the air chamber 13.

[0098] It should be noted that, at this time, the first gas storage container 40 can be constructed as a high-pressure gas storage container to facilitate the storage of high-pressure gas.

[0099] This configuration allows for a higher gas pressure in the gas flowing from the air chamber 13 into the first gas storage container 40, which facilitates the supply of compressed air to the airbag 4. Furthermore, it reduces the risk of gas flowing back into the air chamber 13 from the first gas storage container 40. The structure is reasonable and has good reliability.

[0100] In some embodiments of this utility model, such as Figure 1 and3 As shown, the air inlet is connected between the air chamber 13 and the outside of the housing 1. The one-way valve 20 is provided corresponding to the air inlet and is configured to conduct unidirectionally from the air inlet to the air chamber 13.

[0101] In this embodiment, the one-way valve 20 is provided corresponding to the air inlet. In some embodiments of this application, the air inlet is connected to the air chamber 13, and the one-way valve 20 is provided between the air inlet and the air chamber 13. In some embodiments of this application, the one-way valve 20 is provided at the air inlet. In some embodiments of this application, the air inlet is connected to the air chamber 13 and the air inlet is connected to the pipeline. The one-way valve 20 is provided in the pipeline (i.e., in the pipeline connected to the air inlet), and the pipeline is connected to the outside of the housing 1.

[0102] The one-way valve 20 is configured to conduct in one direction from the air inlet to the air chamber 13. That is, when the volume of the air chamber 13 increases, the gas can flow from the outside of the housing 1 through the one-way valve 20 to the air chamber 13, and the gas cannot flow from the air chamber 13 through the one-way valve 20 to the outside of the housing 1.

[0103] As some embodiments of this application, the gas can be configured as air, which can flow from the outside of the housing 1 through the one-way valve 20 to the air chamber 13. In this case, the suspension assembly 100 of this application is an open air suspension system.

[0104] This configuration allows external gas to flow into the air chamber 13 through the air inlet of the housing 1, while preventing gas in the air chamber 13 from flowing out of the housing 1 through the air inlet, reducing the risk of backflow of gas at the air inlet and improving the reliability of the air pump type vibration damper 200.

[0105] In some embodiments of this utility model, such as Figure 1 and 2 As shown, the suspension assembly 100 also includes: a second air reservoir 50, a one-way valve 20 connected between the air chamber 13 and the second air reservoir 50, the one-way valve 20 being configured to conduct unidirectionally from the second air reservoir 50 to the air chamber 13, and a first control valve 5 connected between the airbag 4 and the second air reservoir 50 to control whether the airbag 4 and the second air reservoir 50 are connected.

[0106] In this embodiment, the one-way valve 20 is connected between the air chamber 13 and the second air storage container 50. As some embodiments of this application, the one-way valve 20 is located between the air inlet and the air chamber 13, and one end of the one-way valve 20 is connected to the air chamber 13, and the other end of the one-way valve 20 is connected to the second air storage container 50.

[0107] The one-way valve 20 is configured to conduct in one direction from the second gas storage container 50 to the gas chamber 13. That is, gas can flow from the second gas storage container 50 to the gas chamber 13, and gas cannot flow from the gas chamber 13 to the second gas storage container 50.

[0108] The first control valve 5 is connected between the airbag 4 and the second air storage container 50 to control whether the airbag 4 and the second air storage container 50 are connected or not. As some embodiments of this application, the first control valve 5 can be constructed as a solenoid valve, which is connected between the airbag 4 and the second air storage container 50 to control whether the airbag 4 and the second air storage container 50 are connected or not.

[0109] As some embodiments of this application, the first control valve 5 can be constructed as a T-shaped three-way valve, with the first port connected to the first air reservoir 40, the second port connected to the second air reservoir 50, and the third port connected to the airbag 4. The first, second, and third ports can all be controlled to open and close independently. When the first port is connected to the third port, the airbag 4 is connected to the first air reservoir 40, and the airbag 4 is inflated. Gas flows from the first air reservoir 40 through the first one-way valve 6 and the first control valve 5 in sequence and fills the airbag 4. The inflated airbag 4 can support the vehicle body and buffer vibrations. When the second port is connected to the third port, the airbag 4 is connected to the second air reservoir 50, and the airbag 4 is deflated. Gas flows through the first control valve 5 and is compressed into the second air reservoir 50.

[0110] As some embodiments of this application, such as Figure 2 and Figure 3 As shown, the airbag 4 and the second air storage container 50 are equipped with a dryer 9, and the dryer 9 can be located between the one-way valve 20 and the second air storage container 50. The gas in the second air storage container 50 is processed by the dryer 9 and then flows through the one-way valve 20 to the air pump type vibration damper 200. As some embodiments of this application, the airbag 4 and the second air storage container 50 are equipped with a dryer 9, and the dryer 9 can be located between the one-way valve 20 and the air pump type vibration damper 200. The compressed gas in the second air storage container 50 flows through the one-way valve 20 and then is processed by the dryer 9 before flowing to the air pump type vibration damper 200.

[0111] As some embodiments of this application, the gas can be configured as air, which can be circulated between the air pump type shock absorber 200, the first air storage container 40, and the second air storage container 50. In this case, the suspension assembly 100 of this application is a closed air suspension system. Unlike the open air suspension system, it is not necessary to introduce gas from the outside of the housing 1 to make the suspension assembly 100 operate.

[0112] This configuration allows the gas to be recycled within the suspension assembly 100, reducing gas emissions. It also eliminates the need to introduce gas from outside the housing 1 to operate the suspension assembly 100, achieving green energy supply, saving costs, and reducing the risk of gas backflow.

[0113] In some embodiments of this utility model, such as Figure 2 and Figure 3As shown, the suspension assembly 100 also includes a third pressure relief valve 8, which is located in the second air storage container 50. The third pressure relief valve 8 is configured to allow unidirectional flow from the second air storage container 50 to the outside of the second air storage container 50 when the air pressure inside the second air storage container 50 is greater than or equal to a fourth preset value.

[0114] The third pressure relief valve 8 is located in the second gas storage container 50. When the gas pressure in the second gas storage container 50 is greater than or equal to the fourth preset value, the third pressure relief valve 8 is unidirectionally open from the second gas storage container 50 to the outside of the second gas storage container 50, allowing gas to flow from the second gas storage container 50 to the outside of the second gas storage container 50.

[0115] By setting a third pressure relief valve 8 and configuring it to open when the gas pressure inside the second gas storage container 50 is greater than or equal to a fourth preset value, the pressure inside the second gas storage container 50 can be kept below the fourth preset value, reducing the risk of overpressure damage to the second gas storage container 50. At the same time, it can maintain stable system pressure, protecting the stable operation of other components of the suspension assembly 100. Furthermore, by configuring the third pressure relief valve 8 to be unidirectionally open from the second gas storage container 50 to the outside of the second gas storage container 50, the risk of gas backflow can be reduced.

[0116] The vehicle according to the present utility model includes the suspension assembly 100 of the above embodiment. The air pump type shock absorber 200 proposed in this application has both shock absorption function and air pump function, so that the air pump type shock absorber 200 can be used as the air supply component of the suspension assembly 100. At least part of the air supply system of the existing air suspension can be omitted, which is beneficial to reduce energy consumption, simplify the structure and reduce costs.

[0117] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0118] In the description of this utility model, "first feature" and "second feature" may include one or more of the features.

[0119] In the description of this utility model, "multiple" means two or more.

[0120] In the description of this utility model, the first feature being "above" or "below" the second feature may include the first and second features being in direct contact, or it may include the first and second features not being in direct contact but being in contact through another feature between them.

[0121] In the description of this utility model, the terms "above", "over" and "on top" for the first feature and the second feature include the first feature being directly above or diagonally above the second feature, or simply indicate that the first feature is at a higher horizontal level than the second feature.

[0122] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "illustrative embodiment," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0123] Although embodiments of the present invention have been shown and described, those skilled in the art will understand that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the claims and their equivalents.

Claims

1. A pneumatic pump-type vibration damper, characterized in that, include: A housing and a separator, wherein the separator is movably disposed on the housing and together with the housing defines an air chamber and a medium chamber, wherein the medium chamber stores a medium and the air chamber stores gas; A piston, at least a portion of which is movably disposed in the medium cavity to divide the medium cavity into a first cavity and a second cavity, the second cavity being located between the first cavity and the gas cavity, the gas cavity being able to communicate with the outside of the housing, and the piston being able to change the volume of the gas cavity when it moves, so as to allow the gas cavity to draw in air or to discharge gas from the gas cavity.

2. The air pump type vibration damper according to claim 1, characterized in that, Also includes: A pressure relief valve is provided, wherein the housing has an exhaust port that connects the air chamber to the outside of the housing, and the pressure relief valve is provided corresponding to the exhaust port.

3. The air pump type vibration damper according to claim 1, characterized in that, Also includes: A one-way valve is provided in the housing, which has an air inlet that connects the air chamber to the outside of the housing. The one-way valve is provided corresponding to the air inlet and is configured to conduct unidirectionally from the air inlet to the air chamber.

4. The air pump type vibration damper according to claim 1, characterized in that, Also includes: A control valve is provided in the second chamber and divides the second chamber into a first sub-chamber and a second sub-chamber. The first sub-chamber is located between the first chamber and the second sub-chamber, and the first sub-chamber can communicate with the second sub-chamber through the control valve.

5. The air pump type vibration damper according to claim 4, characterized in that, The control valve is constructed as a damping valve.

6. The air-pump type vibration damper according to claim 1, characterized in that, The piston includes a rod and a head. The head is connected to the rod and is located in the medium cavity, dividing the medium cavity into a first cavity and a second cavity. The head is configured as a damping valve.

7. The air pump type vibration damper according to claim 4, characterized in that, The housing includes: a first sub-housing and a second sub-housing, the second sub-housing being sleeved on the outside of the first sub-housing, the partition being disposed between the second sub-housing and the first sub-housing and surrounding the first sub-housing, the first sub-housing, the second sub-housing and the partition jointly defining the air chamber, the first sub-housing and the piston jointly defining the first cavity, the first sub-housing, the piston and the control valve jointly defining the first sub-cavity, and the first sub-housing, the second sub-housing, the control valve and the partition jointly defining the second sub-cavity.

8. The air pump type vibration damper according to claim 7, characterized in that, Along the direction of piston movement, one end of the first sub-housing is configured as an open end, and the control valve is located at the open end.

9. A suspension assembly, characterized in that, Includes the air pump type vibration damper according to any one of claims 1-8.

10. A vehicle, characterized in that, Includes the suspension assembly according to claim 9.

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