Air spring with automatic air pressure adjustment and method for adjusting air pressure thereof

Abstract

The application relates to the technical field of air springs, and provides an air spring capable of automatically adjusting air pressure and an air pressure adjusting method thereof. The air spring capable of automatically adjusting air pressure comprises a base, an air bag and an air pressure balancing device. The base is provided with a gas inlet and a gas outlet at one end. The air bag is sleeved at the other end of the base. The air bag and the base jointly form a first air chamber. One end of the air pressure balancing device is arranged on the side of the air bag facing the base. The other end of the air pressure balancing device is arranged on the side of the base facing the air bag. The air pressure balancing device is used for closing the gas inlet and the gas outlet when the closed end of the air bag moves into a balancing area, so that the air bag cannot be inflated or deflated, and the air pressure balancing device can adjust the size of the balancing area. The air spring capable of automatically adjusting air pressure can avoid frequent inflation and deflation of the air spring when the load on the air spring frequently changes, can reduce the secondary shaking of the vehicle body caused by air pressure adjustment, and effectively prolongs the service life of the air spring.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of air springs, in particular to an air spring capable of automatically adjusting air pressure and an air pressure adjusting method thereof. BACKGROUND

[0002] An air spring is a device that utilizes the compressibility of air to achieve elastic buffering effect. The air spring in a vehicle adjusts the air pressure inside to improve the stability and comfort of the vehicle.

[0003] In the related art, when the load of the vehicle increases, the air spring needs to input gas to maintain the height of the vehicle body. When the load of the vehicle frequently changes, the air spring also frequently adjusts the air pressure inside and the height of the vehicle body, which accelerates the aging of the air spring, shortens the service life, and causes poor riding experience. SUMMARY

[0004] The embodiments of the present application provide an air spring capable of automatically adjusting air pressure and an air pressure adjusting method thereof, which can solve the technical problem of the related art that the air spring is frequently inputted or discharged with gas, which accelerates the aging of the air spring and shortens the service life.

[0005] In a first aspect, the embodiments of the present application provide an air spring capable of automatically adjusting air pressure, comprising:

[0006] a base, one end of the base is provided with a gas input port and a gas output port;

[0007] a gas bag, the open end of the gas bag is sleeved on the other end of the base; the closed end of the gas bag is movable along the height direction of the base; the inner side of the gas bag and the inner side of the base jointly form a first air chamber; the first air chamber is respectively communicated with the gas input port and the gas output port;

[0008] an air pressure balancing device, one end of the air pressure balancing device is arranged on the side of the gas bag facing the base; the other end of the air pressure balancing device is arranged on the side of the base facing the gas bag;

[0009] wherein the closed end of the gas bag has a balance region in the movement region; the air pressure balancing device is used to close the gas input port and the gas output port when the closed end of the gas bag moves into the balance region, and adjust the opening degree of the gas input port and the gas output port respectively when the closed end of the gas bag moves out of the balance region; the air pressure balancing device can adjust the size of the balance region

[0010] The technical solution described above in the embodiments of the present application has at least the following technical effects:

[0011] The air spring provided by the embodiment of the present application adjusts the air pressure automatically. The open end of the air bag is sleeved on the base to form a first air chamber. One end of the air pressure balancing device is arranged on the side of the air bag facing the base to reflect the height of the closed end of the air bag. The height of the closed end of the air bag and the range of the balancing area of the closed end are adjusted by controlling the air pressure balancing device. When the air pressure in the first air chamber increases to a preset upper limit value or decreases to a preset lower limit value respectively due to the change of the load on the air spring and the closed end of the air bag moves out of the balancing area, i.e. into the first air chamber, the air pressure balancing device is triggered to adjust the opening degree of the gas inlet or the gas outlet, so that the closed end of the air bag returns to the height before the change of the load on the air spring. In this way, the air pressure balancing device forms an adjustable balancing area in the moving area of the closed end of the air bag. When the closed end of the air bag moves in the balancing area due to the change of the load on the air spring, the gas inlet and the gas outlet remain closed. The frequent inflation and deflation of the first air chamber due to the frequent change of the load on the air spring can be effectively avoided. The secondary shaking of the vehicle body caused by the air pressure adjustment is reduced. The operation stability and reliability of the whole system are improved. The riding comfort of the vehicle is effectively improved. The frequency of inflation and deflation and the frequency of air bag deformation are reduced. The service life of the air spring is effectively prolonged. When the change of the load on the air spring exceeds the preset range, the automatic adjustment of the air pressure in the first air chamber is realized, and the stability of the vehicle body is maintained.

[0012] In some embodiments, the air pressure balancing device comprises:

[0013] a first shell, one end of the first shell is arranged on the side of the base facing the air bag; the height direction of the first shell is parallel to the axis direction of the base; a hollow space is formed in the first shell along the height direction of the first shell;

[0014] a piston column, the first end of the piston column is arranged on the side of the air bag facing the base; the second end of the piston column is movably arranged in the hollow space;

[0015] an adjusting assembly, the adjusting assembly is arranged on the base;

[0016] wherein the outer side surface of the piston column and the inner side surface of the first shell slide and rub; the side surface of the piston column facing the base and the inner side surface of the first shell jointly form a second air chamber; the second air chamber comprises a balancing interval; when the air bag moves into the balancing area, the second end of the piston column moves into the balancing interval; when the air bag moves out of the balancing area, the second end of the piston column moves out of the balancing interval.

[0017] In some embodiments, a first through hole is formed in the base; one end of the first through hole is communicated with the second air chamber; the adjusting assembly comprises:

[0018] a pressure transmitting member disposed on the base away from the air bag in a direction perpendicular to the axis of the base; one end of the pressure transmitting member being in communication with the other end of the first through hole;

[0019] an opening and closing member disposed on the base away from the air bag; one end of the opening and closing member being connected to the pressure transmitting member; the opening and closing member having an external input port and an external output port formed thereon; the external input port being capable of being in communication with the gas input port; the external output port being capable of being in communication with the gas output port;

[0020] wherein the pressure transmitting member is configured to reflect the pressure change in the second air chamber to the opening and closing member; and the opening and closing member is configured to control the opening degree of the gas input port and the gas output port respectively according to the pressure change in the second air chamber reflected by the pressure transmitting member.

[0021] In some embodiments, the pressure transmitting member comprises:

[0022] a second housing disposed on the base away from the air bag in a direction perpendicular to the axis of the base; the second housing having a second through hole formed on the side thereof facing the axis of the base; the second through hole being in communication with the first through hole;

[0023] a piston block movably disposed in the second housing in the length direction of the second housing; the side of the piston block being in sliding friction with the inner side of the second housing; the side of the piston block facing the axis of the base and the inner side wall of the second housing forming a third air chamber; the third air chamber being in communication with the second air chamber.

[0024] In some embodiments, the gas pressure balancing device further comprises a third through hole formed on the side of the second housing away from the first through hole.

[0025] In some embodiments, the opening and closing member comprises:

[0026] an air inlet opening and closing member disposed on the pressure transmitting member away from the first through hole in a direction perpendicular to the axis of the base; one end of the air inlet opening and closing member being connected to the pressure transmitting member; the air inlet opening and closing member being configured to control the gas input port to open when the pressure in the second air chamber reaches a first threshold value; the air inlet opening and closing member being capable of adjusting the size of the first threshold value;

[0027] an exhaust opening and closing member disposed on a side of the air inlet opening and closing member away from the pressure transmitting member in a direction perpendicular to the axis of the base; the exhaust opening and closing member is connected to the air inlet opening and closing member; the exhaust opening and closing member is configured to control the air outlet opening to open when the pressure in the second air chamber reaches a second threshold value; the exhaust opening and closing member is configured to adjust the size of the second threshold value;

[0028] wherein the first threshold value is greater than the second threshold value.

[0029] In some embodiments, the air inlet opening and closing member comprises:

[0030] a third housing disposed on a side of the pressure transmitting member away from the first through hole in a direction perpendicular to the axis of the base; the third housing is provided with the external input opening on a side of the third housing away from the base;

[0031] a first closure member movably disposed in the third housing in a length direction of the third housing; the first closure member is slidably and frictionally connected to the base; the first closure member is movable to connect or isolate the external input opening and the gas input opening;

[0032] a first telescopic rod having one end connected to the first closure member and the other end connected to the pressure transmitting member; the first telescopic rod is disposed in the length direction of the third housing; the first telescopic rod is configured to adjust the distance between the side of the first closure member close to the pressure transmitting member and the inner side of the third housing close to the pressure transmitting member;

[0033] the exhaust opening and closing member comprises:

[0034] a fourth housing disposed on a side of the third housing away from the pressure transmitting member in a direction perpendicular to the axis of the base; the fourth housing is provided with the external input opening on a side of the fourth housing away from the pressure transmitting member;

[0035] a second closure member movably disposed in the fourth housing in a length direction of the fourth housing; the second closure member is slidably and frictionally connected to the base; the second closure member is movable to connect or isolate the external output opening and the gas input opening;

[0036] A second telescopic rod, one end of the second telescopic rod is connected to the second closing part; the other end of the second telescopic rod is connected to one end of the first closing part towards the second closing part; the second telescopic rod is arranged along the length direction of the fourth shell; the second telescopic rod can be telescoped along the length direction of the fourth shell; the second telescopic rod is used to adjust the distance from the side surface of the third shell to the inner side surface of one end of the fourth shell away from the third shell.

[0037] In some embodiments, the gas pressure balancing device further comprises a pressure relief valve, the pressure relief valve is arranged on the side surface of the third shell towards the pressure transmission part; the pressure relief valve is used to discharge the gas in the third shell when the pressure in the third shell is greater than the input gas pressure.

[0038] In the second aspect, the embodiments of the present application provide a gas pressure adjustment method, applied to the air spring for automatically adjusting gas pressure in any of the above embodiments, and the method comprises:

[0039] Obtaining gas pressure adjustment requirement information;

[0040] According to the gas pressure adjustment requirement, controlling the air spring for automatically adjusting gas pressure to perform an adjustment operation.

[0041] In some embodiments, the gas pressure adjustment requirement comprises height adjustment requirement data and sensitivity adjustment requirement data; according to the gas pressure adjustment requirement, controlling the air spring for automatically adjusting gas pressure to perform an adjustment operation, comprising:

[0042] According to the height adjustment requirement data, controlling the gas pressure balancing device to perform a first adjustment operation; the first adjustment operation is used to control the opening and closing of the gas input port or the gas output port;

[0043] According to the sensitivity adjustment requirement data, controlling the gas pressure balancing device to perform a second adjustment operation; the second adjustment operation is used to adjust the size of the balancing area. BRIEF DESCRIPTION OF DRAWINGS

[0044] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings needed in the embodiments or prior art description will be briefly introduced as follows. Obviously, the drawings in the following description are only some embodiments of the present application, and other drawings can be obtained by those skilled in the art without creative labor.

[0045] Figure 1 The structural schematic diagram of the air spring for automatically adjusting gas pressure provided by the embodiments of the present application;

[0046] Figure 2A cross-sectional structure schematic diagram of the air spring with automatic air pressure adjustment provided by the embodiment of the present application;

[0047] Figure 3 A flowchart schematic diagram of the air pressure adjustment method provided by the embodiment of the present application;

[0048] Figure 4 An implementation flowchart schematic diagram of step S200 of the air pressure adjustment method provided by the embodiment of the present application.

[0049] In the drawings, various reference numerals represent various elements, and the following list of reference numerals is provided for ease of reference:

[0050] 100, air spring with automatic air pressure adjustment; 101, base; 1011, gas input port; 1012, gas output port; 1013, first through hole; 102, air bag; 103, first air chamber; 104, air pressure balancing device; 1041, first housing; 1042, piston column; 1043, adjusting assembly; 10431, pressure transmission piece; 104311, second housing; 1043111, second through hole; 1043112, third through hole; 104312, piston block; 10432, opening and closing piece; 104321, outer input port; 104322, outer output port; 104323, air inlet opening and closing piece; 1043231, third housing; 1043232, first sealing piece; 1043233, first telescopic rod; 104324, air outlet opening and closing piece; 1043241, fourth housing; 1043242, second sealing piece; 1043243, second telescopic rod; 1044, second air chamber; 1045, pressure relief valve. DETAILED DESCRIPTION

[0051] In order to make the technical problems, technical solutions and beneficial effects of the present application clearer, the present application will be further described in detail below in conjunction with the drawings and embodiments. It should be understood that the specific embodiments described herein are only intended to explain the present application, and are not intended to limit the present application.

[0052] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs; the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the present application. The description and the drawings of the specification and the above-described drawings are intended to cover all modifications of the present application within the scope of the claims and their equivalents. The terms "comprising" and "having," and any variations thereof, as used in the specification and in the claims are intended to cover not exclusively including.

[0053] It should be noted that when an element is referred to as being "fixed to" or "set to" another element, it can be directly on the other element or indirectly on the other element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or indirectly connected to the other element.

[0054] It should be understood that the terms "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", 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 application 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 limitations on this application.

[0055] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this application, "multiple" means two or more, unless otherwise explicitly specified.

[0056] In this application, "and / or" is merely a way of describing the relationship between related objects, indicating that three relationships can exist; for example, A and / or B can represent three cases: A existing alone, A and B existing simultaneously, and B existing alone. Additionally, the character " / " in this document generally indicates that the preceding and following related objects have an "or" relationship.

[0057] It should be noted that in this application, the words "in some embodiments," "exemplarily," and "for example" are used to indicate examples, illustrations, or descriptions. Any embodiment or design described in this application as "in some embodiments," "exemplarily," or "for example" should not be construed as being more preferred or advantageous than other embodiments or design solutions. Specifically, the use of words such as "in some embodiments," "exemplarily," and "for example" is intended to present related concepts in a specific manner, meaning that a particular feature, structure, or characteristic described in connection with the embodiment may be included in at least one embodiment of this application. The appearance of the above words in various places in the specification does not necessarily refer to the same embodiment, nor is it a separate or alternative embodiment that is mutually exclusive with other embodiments. Those skilled in the art will explicitly and implicitly understand that the embodiments described herein can be combined with other embodiments.

[0058] An air spring is a device that uses the compressibility of air to achieve an elastic cushioning effect. In automobiles, air springs improve vehicle stability and comfort by changing the internal air pressure.

[0059] The air spring in the related art needs to input gas into the air spring to maintain the height of the vehicle body when the load of the vehicle increases. When the load of the vehicle frequently changes, the air spring also frequently adjusts the internal air pressure and adjusts the height of the vehicle body, which causes the air spring to accelerate aging, shortens the service life, and causes poor riding experience.

[0060] Based on this, to improve the technical problem that the air spring in the related art frequently inputs or discharges gas to cause accelerated aging and shortened service life, embodiments of the present application provide the following solutions.

[0061] Please refer to Figure 1 and Figure 2 The embodiments of the present application provide an air spring 100 capable of automatically adjusting air pressure, which comprises a base 101, an air bag 102, and an air pressure balancing device 104. One end of the base 101 is provided with a gas input port 1011 and a gas output port 1012. The open end of the air bag 102 is sleeved on the other end of the base 101. The closed end of the air bag 102 can move along the height direction of the base 101. The inner side of the air bag 102 and the inner side of the base 101 jointly form a first air chamber 103. The first air chamber 103 is respectively communicated with the gas input port 1011 and the gas output port 1012. One end of the air pressure balancing device 104 is arranged on the side of the air bag 102 facing the base 101. The other end of the air pressure balancing device 104 is arranged on the side of the base 101 facing the air bag 102.

[0062] The closed end of the air bag 102 has a balance area in the moving area of the closed end. The air pressure balancing device 104 is used to close the gas input port 1011 and the gas output port 1012 when the closed end of the air bag 102 moves into the balance area, and to adjust the opening degree of the gas input port 1011 and the gas output port 1012 respectively when the air bag 102 moves out of the balance area. The air pressure balancing device 104 can adjust the size of the balance area.

[0063] It can be understood that the base 101 is a component for providing a mounting surface, supporting the air bag 102 and forming a gas storage space, and the base 101 can be a closed-end and open-end cylinder, a closed-end and open-end square cylinder, but is not limited thereto. The air bag 102 is a component for containing gas to lift the vehicle body and buffering the impact received by the vehicle body through its compressibility, and the open end of the air bag 102 can be connected to the open end of the base 101 by bolts, rivets, or the open end of the air bag 102 can be linked to the open end of the base 101 by a snap ring to form the first gas chamber 103, but is not limited thereto. The gas pressure balancing device 104 is a component for enabling the gas input port 1011 and the gas output port 1012 to be connected to the outside gas source and the outside of the air bag 102 when the air bag 102 bears a load within a preset range, and capable of adjusting the preset range, and the gas pressure balancing device 104 can include a height sensor disposed in the first gas chamber 103 and a solenoid valve disposed on the base 101, the gas input end of the solenoid valve being connected to the outside gas source, the gas output end of the solenoid valve being connected to the outside of the air bag 102, the solenoid valve being communicatively connected to the height sensor, and when the height sensor detects that the height of the air bag 102 exceeds the preset range, the solenoid valve is controlled to connect the outside gas source to the gas input port 1011 or to connect the gas output port 1012 to the outside of the air bag 102, so that the air bag 102 returns to the initial height; or the gas pressure balancing device 104 can include a cylinder and a three-position four-way valve, the cylinder being disposed in the first gas chamber 103, one end of the piston rod of the cylinder being connected to the closed end of the air bag 102, one end of the cylinder being disposed on the base 101, the spool of the three-position four-way valve being connected to the piston of the cylinder, the three-position four-way valve being capable of, with the movement of the piston, respectively cutting off the gas input port 1011 and the gas output port 1012, or only connecting the gas input port 1011 to the outside gas source, or only connecting the gas output port 1012 to the outside of the air bag 102, and the size of the balancing region is adjusted by adjusting the resistance of the spool of the three-position four-way valve, but is not limited thereto. The movement range of the closed end of the air bag 102 is the range between the open end of the base 101 and the air bag 102 when the air bag 102 is inflated to the maximum. The balancing region is a region within the movement range of the closed end of the air bag 102, and when the closed end of the air bag 102 moves within the balancing region, the gas pressure balancing device 104 does not trigger the adjustment of the opening degree of the gas input port 1011 and the gas output port 1012 to connect the gas input port 1011 to the outside gas source and the gas output port 1012 to the outside of the air bag 102.

[0064] From the above, the air spring 100 provided by the embodiment of the present application, the open end of the air bag 102 is sleeved on the base 101 to form the first air chamber 103, one end of the air pressure balancing device 104 is arranged on the side of the air bag 102 facing the base 101 to reflect the height of the closed end of the air bag 102, the height of the closed end of the air bag 102 and the range of the balance area of the closed end are adjusted by controlling the air pressure balancing device 104, when the air pressure in the first air chamber 103 increases to the preset upper limit value or decreases to the preset lower limit value respectively when the load on the air spring changes and the closed end of the air bag 102 moves to the outside of the balance area, the air pressure balancing device 104 is triggered to adjust the opening degree of the gas inlet port 1011 or the gas outlet port 1012, so that the closed end of the air bag 102 returns to the height before the load on the air spring changes. In this way, by the air pressure balancing device 104, an adjustable balance area is formed in the moving area of the closed end of the air bag 102, when the movement of the closed end of the air bag 102 caused by the change of the load on the air spring is in the balance area, the gas inlet port 1011 and the gas outlet port 1012 remain closed, which can effectively avoid the frequent inflation and deflation of the first air chamber 103 when the load on the air spring frequently changes, reduce the secondary shaking of the vehicle body caused by air pressure adjustment, improve the operation stability and reliability of the whole system, effectively improve the riding comfort of the vehicle, reduce the frequency of inflation and deflation and the frequency of deformation of the air bag 102, effectively prolong the service life of the air spring, and realize the automatic adjustment of the air pressure in the first air chamber 103 when the load on the air spring changes beyond the preset range, and keep the vehicle body stable.

[0065] In some embodiments, referring to Figure 1 and Figure 2 , the air pressure balancing device 104 includes a first housing 1041, a piston column 1042 and an adjusting assembly 1043, one end of the first housing 1041 is arranged on the side of the base 101 facing the air bag 102; the height direction of the first housing 1041 is parallel to the axis direction of the base 101; the first housing 1041 is hollow along the height direction thereof; the first end of the piston column 1042 is arranged on the side of the air bag 102 facing the base 101; the second end of the piston column 1042 is movably arranged in the hollow space; and the adjusting assembly 1043 is arranged on the first housing 1041.

[0066] Wherein, the outer side surface of the piston column 1042 and the inner side surface of the first housing 1041 slide and rub; the side surface of the piston column 1042 facing the axis of the base 101 and the inner side surface of the first housing 1041 together form a second air chamber 1044; the second air chamber 1044 includes a balance interval; and the piston column 1042 is used for moving the second end of the piston column 1042 into the balance interval when the air bag 102 moves into the balance area, and moving the second end of the piston column 1042 out of the balance interval when the air bag 102 moves out of the balance area.

[0067] It can be understood that the first shell 1041 is a component for forming a hollow space and limiting the moving direction of the air bag 102, and the first shell 1041 can be a cylindrical shell or a square shell, but is not limited thereto. The piston column 1042 is a component for moving in the hollow space with the change of the air pressure of the first air chamber 103. When the load borne by the air bag 102 increases and the closed end of the air bag 102 moves toward the base 101, the volume of the second air chamber 1044 decreases to increase the air pressure in the second air chamber 1044; when the load borne by the air bag 102 decreases and the closed end of the air bag 102 moves away from the base 101, the volume of the second air chamber 1044 increases to decrease the air pressure in the second air chamber 1044. The balance interval corresponds to the balance region, the position of the closed end of the air bag 102 in the moving region corresponds to the position of the piston column 1042 in the second air chamber 1044, and when the closed end of the air bag 102 is in the balance region, the piston column 1042 is also in the balance region; when the closed end of the air bag 102 is out of the balance region, the piston column 1042 is also out of the balance region.

[0068] In this way, by arranging the first shell 1041 on the base 101 to form a hollow space and arranging the piston column 1042 on the side of the air bag 102 facing the base 101, the piston column 1042 moves with the expansion and contraction of the air bag 102, the side of the piston column 1042 facing the base 101 forms the second air chamber 1044 with the inner side of the first shell 1041, the pressure in the second air chamber 1044 changes with the movement of the closed end of the air bag 102, and thus the movement of the closed end of the air bag 102 along the axial direction of the base 101 can be converted into the change of the air pressure of the second air chamber 1044, so as to sensitively reflect the movement of the closed end of the air bag 102 and enhance the versatility and adaptability.

[0069] Optionally, the length of the first shell 1041 is greater than the length of the piston column 1042, and at least part of the piston column 1042 is located in the first shell 1041. The length of the first shell 1041 and the piston column 1042 is equal to the height of the closed end of the air bag 102 to the base 101 when the air bag 102 is inflated to the maximum. The piston column 1042 can move into the first shell 1041.

[0070] In this way, by enabling the piston column 1042 to remain at least partially in the first shell 1041, the first air chamber 103 and the second air chamber 1044 are separated, the air pressure balancing device 104 can be prevented from being disturbed by the first air chamber 103, and the accuracy of the adjustment of the air pressure balancing device 104 is improved.

[0071] In some embodiments, please refer to Figure 1 and Figure 2The first through hole 1013 is formed in the base 101; one end of the first through hole 1013 is communicated with the second air chamber 1044; the adjusting assembly 1043 comprises a pressure transmission member 10431 and an opening and closing member 10432; the pressure transmission member 10431 is arranged on the base 101 away from the air bag 102 along the direction perpendicular to the axis of the base 101; one end of the pressure transmission member 10431 is communicated with the other end of the first through hole 1013; the opening and closing member 10432 is arranged on the base 101 away from the air bag 102; one end of the opening and closing member 10432 is connected to the pressure transmission member 10431; the opening and closing member 10432 is provided with an external input port 104321 and an external output port 104322; the external input port 104321 can be communicated with the gas input port 1011; the external output port 104322 can be communicated with the gas output port 1012.

[0072] The pressure transmission member 10431 is used to reflect the pressure change in the second air chamber 1044 to the opening and closing member 10432; the opening and closing member 10432 is used to control the opening degree of the gas input port 1011 and the gas output port 1012 respectively according to the pressure change in the second air chamber 1044 reflected by the pressure transmission member 10431.

[0073] It can be understood that the pressure transmission member 10431 is a component for converting the displacement of the piston column 1042 along the axis direction of the base 101 into displacement along the direction perpendicular to the axis direction of the base 101; the pressure transmission member 10431 can change the direction of the thrust or the pulling force generated when the piston column 1042 moves along the axis direction of the base 101, or change the size of the thrust or the pulling force by a predetermined ratio, but is not limited thereto. The pressure transmission member 10431 can adopt a throttle valve, or can adopt a pneumatic cylinder, but is not limited thereto. The opening and closing member 10432 is a component for adjusting the opening degree of the gas input port 1011 and the gas output port 1012 respectively according to the pressure transmitted by the pressure transmission member 10431; for example, the opening and closing member 10432 can adopt a gate valve, which is driven to open and close by the thrust or the pulling force generated by the pressure transmission member 10431, to adjust the opening degree of the gas input port 1011 and the gas output port 1012; or can adopt a pneumatic valve, which is driven to move by the air pressure generated by the pressure transmission member 10431, to adjust the opening degree of the gas input port 1011 and the gas output port 1012, but is not limited thereto.

[0074] In this way, by opening the first through hole 1013 on the base 101, the pressure transmitting member 10431 is communicated with the second air chamber 1044 through the first through hole 1013, the pressure transmitting member 10431 converts the displacement of the piston column 1042 along the axis direction of the base 101 into the displacement along the direction perpendicular to the axis direction of the base 101, and then drives the opening and closing member 10432 to adjust the opening degree of the gas input port 1011 and the gas output port 1012, avoids the overextension of the air spring in the height direction, facilitates the installation work of the air spring, and can improve the corresponding sensitivity of the air pressure balancing device 104 to the load change on the air spring, accurately controls the opening degree of the opening and closing member 10432 to adjust the gas input port 1011 and the gas output port 1012, avoids the overcharging and discharging of the air bag 102, improves the stability and reliability of the air spring, and prolongs the service life of the air spring.

[0075] In some embodiments, please refer to Figure 1 and Figure 2 , the pressure transmitting member 10431 includes a second housing 104311 and a piston block 104312, the second housing 104311 is arranged on the base 101 away from the air bag 102 along the direction perpendicular to the axis of the base 101; the side of the second housing 104311 facing the axis of the base 101 is provided with a second through hole 1043111; the second through hole 1043111 is communicated with the first through hole 1013; the piston block 104312 is movably arranged in the second housing 104311 along the length direction of the second housing 104311; the side of the piston block 104312 is in sliding friction with the inner side of the second housing 104311; the side of the piston block 104312 facing the axis of the base 101 and the inner side wall of the second housing 104311 form a third air chamber; the third air chamber is communicated with the second air chamber 1044.

[0076] It can be understood that the second housing 104311 is a component for providing a moving space and limiting the moving direction. The piston block 104312 is a component for moving along the length direction of the second housing 104311 with the pressure change in the second air chamber 1044. The projection of the piston block 104312 on the length direction of the second housing 104311 is the same as the shape and area of the projection of the inner side of the second housing 104311 on the length direction of itself, so that the third air chamber is a closed space. The second through hole 1043111 and the first through hole 1013 can be connected by a plastic hose or a metal hard pipe, but are not limited thereto.

[0077] In this way, the second shell 104311 is arranged on the base 101 away from the air bag 102 along an axis perpendicular to the base 101, the piston block 104312 is movably arranged in the second shell 104311 along the length direction of the second shell 104311, the side of the piston block 104312 facing the axis of the base 101 and the inner side wall of the second shell 104311 form a third air chamber, the side of the second shell 104311 facing the axis of the base 101 is provided with a second through hole 1043111, the second through hole 1043111 is connected to the first through hole 1013, so that the third air chamber is communicated with the second air chamber 1044. In the process that the air spring bears an increasing load and the closed end of the air bag 102 moves towards the base 101, the piston column 1042 compresses the volume of the second air chamber 1044, the air pressure in the second air chamber 1044 increases, and then the piston block 104312 is pushed to move away from the axis of the base 101; in the process that the air spring bears a decreasing load and the closed end of the air bag 102 moves away from the base 101, the piston column 1042 increases the volume of the second air chamber 1044, the air pressure in the second air chamber 1044 decreases, and then the piston block 104312 is pulled to move towards the axis of the base 101. In this way, the displacement of the piston column 1042 is converted into the displacement of the piston block 104312, the direction of force transmission is changed, which is beneficial to the optimization of space layout, and the changes inside the base 101 and the air bag 102 are transmitted to the outside of the base 101, which is convenient for adjustment and maintenance, and improves the efficiency and convenience of air pressure adjustment.

[0078] Optionally, when the piston column 1042 is located at a preset position, gas is injected into the second air chamber 1044 to make the piston block 104312 located at an initial position; the air pressure value in the second air chamber 1044 is a preset air pressure value.

[0079] It can be understood that the gas in the second gas chamber 1044 can be air, hydrogen, or inert gas, but is not limited thereto. The preset position is a position of the piston column 1042 towards one end of the base 101, and the gas is injected into the air bag 102 through the gas inlet 1011 to adjust the preset position. For example, the preset position can be that the side of the piston column 1042 towards the base 101 is located at the middle of the first shell 1041, or the side of the piston column 1042 towards the base 101 is located at one third of the first shell 1041 close to the base 101, but is not limited thereto. The initial position is a position of the side of the piston block 1043 2 towards the axis of the base 101 when the piston column 1042 is at the preset position, and the gas is injected into the second gas chamber 1044 to push the piston block 1043 2 to move to the initial position by abutting against the inner side of the second shell 1043 1 towards the axis of the base 101. For example, the initial position can be that the side of the piston block 1043 2 towards the axis of the base 101 is located at the middle of the second shell 1043 1, or the side of the piston block 1043 2 towards the axis of the base 101 is located at one third of the second shell 1043 1 towards the axis of the base 101, but is not limited thereto. The preset pressure value is a pressure value in the second gas chamber 1044 when the piston column 1042 is at the preset position and the piston block 1043 2 is at the initial position, and the pressure acting on the piston block 1043 2 is equal to the friction between the piston block 1043 2 and the second shell 1043 1 when the pressure value in the second gas chamber 1044 is equal to the preset pressure value.

[0080] In this way, the distance between the closed end of the air bag 102 and the base 101 is adjusted by injecting gas into the first gas chamber 103 to calibrate the height of the air spring automatically adjusted, and the piston block 1043 2 is moved to abut against the inner side of the second shell 1043 1 towards the axis of the base 101, and the piston block 1043 2 is pushed to the initial position by injecting gas into the second gas chamber 1044 when the piston column 1042 moves to the preset position, so as to limit the adjustable range of the air spring. In this way, the adjustment accuracy of the air spring can be improved, and excessive adjustment of the air spring can be avoided, thereby improving the stability and safety of the air spring.

[0081] Optionally, the cross-sectional area of the piston column 1042 in the height direction of the base 101 is greater than the cross-sectional area of the piston block 1043 2 in the length direction of the second shell 1043 1.

[0082] In this way, the pressure in the second air chamber 1044 acting on the piston block 104312 is greater than the pressure acting on the piston column 1042, and the piston block 104312 can sensitively reflect the displacement change of the piston column 1042, thereby improving the sensitivity and accuracy of the pressure transmission member 10431.

[0083] In some embodiments, referring to Figure 1 and Figure 2 , the air pressure balancing device 104 further comprises a third through hole 1043112 formed in the side of the second housing 104311 away from the first through hole 1013.

[0084] In this way, when the piston block 104312 moves in the second housing 104311, the inside of the end of the second housing 104311 away from the first through hole 1013 does not form high pressure to prevent the piston block 104312 from moving, so that the piston block 104312 can move smoothly in the second housing 104311, and the piston column 1042 can move smoothly in the first housing 1041, thereby ensuring the sensitivity and accuracy of the air pressure balancing device 104, improving the efficiency of the air pressure balancing device 104 in adjusting the air pressure in the air bag 102, and enabling the air spring to quickly adjust the height of the vehicle body.

[0085] In some embodiments, referring to Figure 1 and Figure 2 , the opening and closing member 10432 comprises an air inlet opening and closing member 104323 and an air outlet opening and closing member 104324, the air inlet opening and closing member 104323 is arranged on the side of the pressure transmission member 10431 away from the first through hole 1013 along the direction perpendicular to the axis of the base 101; one end of the air inlet opening and closing member 104323 is connected to the pressure transmission member 10431; the air inlet opening and closing member 104323 is used to control the opening of the gas inlet port 1011 when the pressure in the second air chamber 1044 reaches a first threshold value; the air inlet opening and closing member 104323 can adjust the size of the first threshold value; the air outlet opening and closing member 104324 is arranged on the side of the air inlet opening and closing member 104323 away from the pressure transmission member 10431 along the direction perpendicular to the axis of the base 101; the air outlet opening and closing member 104324 is connected to the air inlet opening and closing member 104323; the air outlet opening and closing member 104324 is used to control the opening of the gas outlet port 1012 when the pressure in the second air chamber 1044 reaches a second threshold value; the air outlet opening and closing member 104324 can adjust the size of the second threshold value; wherein the first threshold value is greater than the second threshold value.

[0086] It can be understood that the intake opening and closing member 104323 is a component for controlling the opening degree of the gas inlet port 1011 according to the displacement of the piston block 104312. The intake opening and closing member 104323 has an adjustable length of idle stroke, and when the piston block 104312 drives the intake opening and closing member 104323 to displace, the gas inlet port 1011 remains closed within the idle stroke of the intake opening and closing member 104323. For example, the intake opening and closing member 104323 can be connected to the piston block 104312 through a telescopic electric control link, the telescopic length of the electric control link is the length of the idle stroke, and the piston block 104312 needs to be moved to make the electric control link extend to a length that cannot be extended, and then drive the intake opening and closing member 104323 to adjust the opening degree of the gas inlet port 1011; or the intake opening and closing member 104323 can include a stopper with a length greater than the diameter of the gas inlet port 1011, and the piston block 104312 needs to be moved to the edge of the stopper tangent to the edge of the gas inlet port 1011, and then continue to move to adjust the opening degree of the gas inlet port 1011, but not limited thereto. The exhaust opening and closing member 104324 can adopt the same structure as the intake opening and closing member 104323.

[0087] In this way, by arranging the intake opening and closing member 104323 on the side of the pressure transmission member 10431 away from the first through hole 1013 along the direction perpendicular to the axis of the base 101, one end of the intake opening and closing member 104323 is connected to the pressure transmission member 10431, and the exhaust opening and closing member 104324 is arranged on the side of the intake opening and closing member 104323 away from the pressure transmission member 10431 along the direction perpendicular to the axis of the base 101, and the exhaust opening and closing member 104324 is connected to the intake opening and closing member 104323, so that the intake opening and closing member 104323 and the exhaust opening and closing member 104324 can be linked and driven by the displacement of the piston block 104312 of the pressure transmission member 10431 to control the opening degrees of the gas inlet port 1011 and the gas outlet port 1012 respectively, so that the air spring can flexibly adjust the triggering point of the air pressure adjustment according to different load conditions and use requirements, improve the adaptability of the air spring, and improve the accuracy of the air pressure adjustment. Exposing the adjustment structure on the side of the base away from the air bag 102 is beneficial to improve the convenience of adjustment and maintenance.

[0088] In some embodiments, please refer to Figure 1 and Figure 2The air inlet opening and closing member 104323 includes a third housing 1043231, a first closure member 1043232, and a first telescopic rod 1043233. The third housing 1043231 is arranged on the side of the pressure transmission member 10431 away from the first through hole 1013 along the direction perpendicular to the axis of the base 101. An external input port 104321 is formed on the side of the third housing 1043231 away from the base. The first closure member 1043232 is movably arranged in the third housing 1043231 along the length direction of the third housing 1043231. The side of the first closure member 1043232 facing the base 101 is in sliding friction with the base 101. The first closure member 1043232 can be moved to make the external input port 104321 conductive or isolated with the gas input port 1011. One end of the first telescopic rod 1043233 is connected to the first closure member. The other end of the first telescopic rod 1043233 is connected to the pressure transmission member 10431. The first telescopic rod 1043233 is arranged along the length direction of the third housing 1043231. The first telescopic rod 1043233 can be telescoped along the length direction of the third housing 1043231. The first telescopic rod 1043233 is used to adjust the distance between the side of the first closure member close to the pressure transmission member 10431 and the inner side of the end of the third housing 1043231 close to the pressure transmission member 10431.

[0089] The air exhaust opening and closing member 104324 includes a fourth housing 1043241, a second closure member 1043242, and a second telescopic rod 1043243. The fourth housing 1043241 is arranged on the side of the third housing 1043231 away from the pressure transmission member 10431 along the direction perpendicular to the axis of the base 101. An external input port 104321 is formed on the side of the fourth housing 1043241 away from the pressure transmission member 10431. The second closure member 1043242 is movably arranged in the fourth housing 1043241 along the length direction of the fourth housing 1043241. The side of the second closure member 1043242 facing the base 101 is in sliding friction with the base 101. The second closure member 1043242 can be moved to make the external output port 104322 conductive or isolated with the gas input port 1011. One end of the second telescopic rod 1043243 is connected to the second closure member. The other end of the second telescopic rod 1043243 is connected to the end of the first closure member facing the second closure member. The second telescopic rod 1043243 is arranged along the length direction of the fourth housing 1043241. The second telescopic rod 1043243 can be telescoped along the length direction of the fourth housing 1043241. The second telescopic rod 1043243 is used to adjust the distance between the side of the second closure member 1043242 away from the third housing 1043231 and the inner side of the end of the fourth housing 1043241 away from the third housing 1043231.

[0090] It can be understood that the third housing 1043231 is a component for providing a moving space and limiting the moving direction and distance. The first closure 1043232 is a component for closing the gas input port 1011, and the first closure 1043232 has a sealing surface, which can be a plane or an arc surface, but is not limited thereto. The first telescopic rod 1043233 is a component for telescoping to adjust the length thereof, so as to adjust the distance between the side surface of the first closure 1043232 towards the pressure transmitting member 10431 and the inner side surface of one end of the third housing 1043231 towards the pressure transmitting member 10431, and the first telescopic rod 1043233 can adopt an electric telescopic rod, which is driven by a motor to telescope the rod body to adjust the total length of the telescopic rod, or can adopt two rod bodies connected by threads, which are manually rotated relative to each other to adjust the total length of the two rod bodies, but is not limited thereto. The fourth housing 1043241 can adopt the same structure as the third housing 1043231. The second closure 1043242 can adopt the same structure as the first closure 1043232. The second telescopic rod 1043243 can adopt the same structure as the first telescopic rod 1043233. The first telescopic rod 1043233 is used to adjust the distance between the end surface of the second closure 1043242 away from one end of the pressure transmitting member 10431 and the end surface of the fourth housing 1043241 away from one end of the pressure transmitting member 10431.

[0091] The third shell 1043231 is arranged on the side of the pressure transmitting member 10431 away from the first through hole 1013 along the axis perpendicular to the base 101, the side of the third shell 1043231 away from the base is provided with an external input port 104321 to communicate with the external gas source, the first closure member 1043232 is movably arranged in the third shell 1043231 along the length direction of the third shell 1043231, the closing surface of the first closure member 1043232 is used to close the gas input port 1011, one end of the first telescopic rod 1043233 is connected to the first closure member, the other end of the first telescopic rod 1043233 is connected to the pressure transmitting member 10431, the length of the first telescopic rod 1043233 is controlled to adjust the position of the first closure member 1043232, so as to adjust the virtual length of the air inlet and outlet opening and closing member 104323, the fourth shell 1043241, the second closure member 1043242 and the second telescopic rod 1043243 are arranged in the same way, the length of the second telescopic rod 1043243 is controlled to adjust the position of the second closure member 1043242, so as to adjust the virtual length of the air outlet and inlet opening and closing member 104324, by controlling the virtual length of the air inlet and outlet opening and closing member 104323 and the virtual length of the air outlet and inlet opening and closing member 104324 respectively, when the load of the air spring changes in the set range, the gas input port 1011 or the gas output port 1012 will not be opened, avoiding frequent adjustment of the internal gas pressure of the air spring, reducing the mechanical stress and friction on the air bag 102, reducing unnecessary mechanical movement and stress change, reducing the risk of fatigue damage, significantly prolonging the service life of the air spring, fully utilizing the elasticity of the air spring, improving the stability and reliability of the air spring operation, reducing system oscillation, and improving the stability and control accuracy of the air spring.

[0092] Optionally, the diameter of the gas input port 1011 is the same as the diameter of the gas output port 1012. The distance from the side of the first closure member 1043232 facing the pressure transmitting member 10431 to the edge of the gas input port 1011 close to the pressure transmitting member 10431 is equal to the minimum value of the sum of the distance from the end surface of the second closure member 1043242 close to the pressure transmitting member 10431 to the edge of the gas output port 1012 close to the pressure transmitting member 10431.

[0093] In this way, by setting the minimum value of the distance from the side of the first closure 1043232 towards the pressure transmitting member 10431 to the edge of the gas input port 1011 close to the pressure transmitting member 10431 and the distance from the end face of the second closure 1043242 close to one end of the pressure transmitting member 10431 to the edge of the gas output port 1012 close to the pressure transmitting member 10431 equal to the diameter of the gas input port 1011, the simultaneous opening of the gas input port 1011 and the gas output port 1012 can be avoided, and the reliability of the air pressure balancing device 104 is ensured.

[0094] In some embodiments, referring to Figure 1 and Figure 2 , the air pressure balancing device 104 further comprises a pressure relief valve 1045 arranged on the side of the third housing 1043231 towards the pressure transmitting member 10431; the pressure relief valve 1045 is used to discharge the gas in the third housing 1043231 when the pressure in the third housing 1043231 is greater than the input air pressure.

[0095] It can be understood that when the external gas source is connected to the gas input port 1011, the air bag 102 expands, the closed end of the air bag 102 and the piston column 1042 move away from the base 101, the piston block 104312 moves towards the axis direction of the base 101, and then the first closure 1043232 moves towards the pressure transmitting member 10431, and finally the gas input port 1011 is closed. During the movement of the first closure 1043232 towards the pressure transmitting member 10431, the end face of the first closure 1043232 towards the pressure transmitting member 10431 and the inner side of the third housing 1043231 form a sealed space, the air pressure in the sealed space is equal to the input air pressure, and the volume of the sealed space is gradually compressed, so that the internal air pressure increases, which will hinder the movement of the first closure 1043232. By discharging the gas in the sealed space through the pressure relief valve 1045, the first closure 1043232, the piston block 104312 and the piston column 1042 can move smoothly.

[0096] In this way, by discharging the gas in the sealed space through the pressure relief valve 1045, the first closure 1043232, the piston block 104312 and the piston column 1042 can move smoothly, which is beneficial to prevent the jamming or damage of each component, eliminate the resistance caused by the decrease of the volume of the sealed space, ensure the smooth movement of the first closure 1043232, the piston block 104312 and the piston column 1042, and make the air spring air pressure adjustment system work normally, thereby optimizing the operation efficiency of the air pressure adjustment.

[0097] Please refer to Figure 3The embodiment of the present application also provides a gas pressure adjusting method. The gas pressure adjusting method is applied to the automatic gas pressure adjusting air spring 100, and the automatic gas pressure adjusting air spring 100 is the execution subject of the gas pressure adjusting method provided by the embodiment of the present application. The embodiment of the present application does not limit the automatic gas pressure adjusting air spring 100.

[0098] For example, refer to Figure 1 and Figure 2 The automatic gas pressure adjusting air spring 100 can include a base 101, an air bag 102 and a gas pressure balancing device 104. The base 101 is provided with a gas inlet 1011 and a gas outlet 1012 at one end. The open end of the air bag 102 is sleeved on the other end of the base 101. The closed end of the air bag 102 can move along the height direction of the base 101. The inner side of the air bag 102 and the inner side of the base 101 jointly form a first gas chamber 103. The first gas chamber 103 is respectively communicated with the gas inlet 1011 and the gas outlet 1012. One end of the gas pressure balancing device 104 is arranged on the side of the air bag 102 facing the base 101. The other end of the gas pressure balancing device 104 is arranged on the side of the base 101 facing the air bag 102. The gas pressure balancing device 104 includes a control device, which can be a single-chip microcomputer, a PLC, a central processing unit, a handheld device with wireless communication function, a computing device or other processing devices connected to a wireless modem.

[0099] In order to better understand the gas pressure adjusting method provided by the embodiment of the present application, the specific implementation process of the gas pressure adjusting method provided by the embodiment of the present application is exemplarily introduced below.

[0100] Figure 3 The embodiment of the present application provides a schematic flow chart of the gas pressure adjusting method. The gas pressure adjusting method includes:

[0101] S100, obtaining gas pressure adjusting demand information;

[0102] S200, controlling the automatic gas pressure adjusting air spring 100 to perform an adjusting operation according to the gas pressure adjusting demand.

[0103] It can be understood that the gas pressure adjusting demand information is information for indicating that the height of the vehicle needs to be adjusted. The gas pressure adjusting demand information can be sent by a sensor on the vehicle after detecting the posture of the vehicle body, or can be input by artificial, but is not limited thereto. The adjusting operation is an operation of controlling the air spring to expand or compress.

[0104] From the above, the air pressure adjustment method provided by the embodiments of the present application can obtain air pressure adjustment requirement information, control the air spring 100 with automatic air pressure adjustment to perform adjustment operation according to the air pressure adjustment requirement information, and can actually adjust the vehicle body height according to the actual use requirement, so that the vehicle can automatically adapt to various working condition changes, improve the adaptability and passability of the vehicle, accurately adjust the vehicle body height, and meet diversified personalized requirements.

[0105] As an optional embodiment of the present application, refer to Figure 4 , the air pressure adjustment requirement includes height adjustment requirement data and sensitivity adjustment requirement data; S200, according to the air pressure adjustment requirement, control the air spring 100 with automatic air pressure adjustment to perform adjustment operation, including:

[0106] S210, according to the height adjustment requirement data, control the air pressure balancing device 104 to perform first adjustment operation; the first adjustment operation is used to control the opening and closing of the gas input port 1011 or the gas output port 1012.

[0107] It can be understood that the height adjustment requirement is to actively adjust the height of the air spring, by controlling the first limiting piece to move towards the direction away from the pressure transmitting piece 10431 to make the external gas source communicate with the gas input port 1011, input gas into the air bag 102 to make the air bag 102 expand, raise the air spring, or by controlling the second limiting piece to move towards the pressure transmitting piece 10431 to make the gas output port 1012 communicate with the outside of the air bag 102, discharge the gas in the air bag 102 to make the air bag 102 shrink, and lower the air spring.

[0108] S220, according to the sensitivity adjustment requirement data, control the air pressure balancing device 104 to perform second adjustment operation; the second adjustment operation is used to adjust the size of the balancing area.

[0109] It can be understood that the sensitivity adjustment requirement is to adjust the sensitivity of the automatic adjustment of the air spring, and the sensitivity of the automatic adjustment of the air spring includes the sensitivity of the air spring gas intake and the sensitivity of the air spring gas exhaust. By controlling the first limiting piece to move to adjust the sensitivity of the air spring gas intake, reducing the distance from the side of the first closing piece 1043232 away from the pressure transmitting piece 10431 to the edge of the gas input port 1011 close to the pressure transmitting piece 10431, the sensitivity of the air spring gas intake can be enhanced, and vice versa. By controlling the second limiting piece to move to adjust the sensitivity of the air spring gas exhaust, reducing the distance from the end face of the second closing piece 1043242 away from the pressure transmitting piece 10431 to the edge of the gas output port 1012 away from the pressure transmitting piece 10431, the sensitivity of the air spring gas exhaust can be enhanced, and vice versa.

[0110] In this way, the sensitivity of the air spring intake and exhaust is adjusted according to the sensitivity adjustment requirement data, so that the air spring and the vehicle adapt to different working condition requirements, the air spring adopts different adjustment speeds when the load increases and decreases, the comfort of the vehicle is improved, frequent adjustment is avoided, the service life of the air spring is prolonged, and the cost of maintaining the air spring is reduced.

[0111] It should be understood that the size of the serial number of each step in the above embodiment does not mean the order of execution, and the execution order of each process should be determined according to its function and internal logic, and should not constitute any limitation on the implementation process of the embodiments of the present application.

[0112] The embodiments of the present application also provide an air spring 100 for automatically adjusting air pressure, the air spring 100 for automatically adjusting air pressure comprising a control device, the control device comprising at least one processor, at least one memory, and a computer program stored in the at least one memory and executable on the at least one processor, and when the processor executes the computer program, the control device implements the steps in the embodiments of any of the air pressure adjustment methods described above.

[0113] For example, the computer program can be divided into one or more units, which are stored in the memory and executed by the processor to complete the present application. The one or more units can be a series of computer program instruction segments capable of completing a specific function, which are used to describe the execution process of the computer program in the control device.

[0114] The control device can be a single-chip microcomputer, a PLC, a central processing unit, or other computing devices. The control device can include, but is not limited to, a processor and a memory. Those skilled in the art can understand that the control device can include more or fewer components, or combine certain components, or different components, for example, can also include input / output devices, network access devices, buses, etc.

[0115] The processor can be a central processing unit (CPU), and the processor can also be other general-purpose processors, digital signal processors (DSPs), application specific integrated circuits (ASICs), field programmable gate arrays (FPGAs) or other programmable logic devices, discrete gates or transistor logic devices, discrete hardware components, etc. The general-purpose processor can be a microprocessor or the processor can also be any conventional processor.

[0116] The memory can be an internal storage unit of the control device, such as a hard disk or a memory of the control device, in some embodiments. The memory can also be an external storage device of the control device, such as a plug-in hard disk, a Smart Media Card (SMC), a Secure Digital (SD) card, a Flash Card, etc. equipped on the control device, in other embodiments. Further, the memory can include both an internal storage unit and an external storage device of the control device. The memory is used to store an operating system, an application program, a BootLoader, data, and other programs, such as program codes of the computer program, etc. The memory can also be used to temporarily store data that has been output or is to be output.

[0117] The embodiments of the present application further provide a computer readable storage medium, which stores a computer program. The computer program is executed by a processor to implement the steps in any of the above method embodiments.

[0118] The embodiments of the present application provide a computer program product. When the computer program product is run on the air spring 100, the air spring 100 implements the steps in any of the above method embodiments.

[0119] The integrated unit, if implemented in the form of a software function unit and sold or used as an independent product, can be stored in a computer readable storage medium. Based on such understanding, the embodiments of the present application implement all or part of the above-mentioned method processes, which can be completed by instructing related hardware through a computer program. The computer program can be stored in a computer readable storage medium, and the computer program can implement the steps of the above-mentioned method embodiments when executed by a processor. The computer program includes computer program code, which can be in the form of source code, object code, executable files, or some intermediate forms. The computer readable medium at least includes any entity or device capable of carrying the computer program code to the air spring 100, a recording medium, a computer memory, a read-only memory (ROM), a random access memory (RAM), an electrical carrier signal, a telecommunications signal, and a software distribution medium. For example, a U disk, a mobile hard disk, a magnetic disk or an optical disk, etc.

[0120] In the above embodiments, the description of each embodiment has its own focus, and the parts not described or recorded in a certain embodiment can be referred to the relevant description of other embodiments.

[0121] Those skilled in the art can understand that the units and algorithm steps of each example described in combination with the embodiments disclosed herein can be realized in electronic hardware or a combination of computer software and electronic hardware. Whether the functions are realized in hardware or software depends on the specific application and design constraints of the technical solution. A person skilled in the art can use different methods to implement the described functions for each specific application, but such implementation should not be considered beyond the scope of the present application.

[0122] In the embodiments provided in the present application, it should be understood that the disclosed air spring 100 for automatically adjusting air pressure and the air pressure adjusting method thereof can be implemented in other ways. For example, the above-described embodiments of the air spring 100 for automatically adjusting air pressure are merely illustrative. For example, the division of the units is merely a logical functional division. In actual implementation, there can be another division manner. For example, multiple units or components can be combined or integrated into another system, or some features can be omitted or not executed. In addition, the coupling or direct coupling or communication connection between the units shown or discussed can be indirect coupling or communication connection through some interfaces, devices or units, and can be electrical, mechanical or other forms.

[0123] The units described as separate components can or can not be physically separate, and the components shown as units can or can not be physical units, i.e., can be located in one place or can be distributed on multiple network units. Part or all of the units can be selected according to actual needs to achieve the purpose of the embodiments.

[0124] The above only describes the preferred embodiments of the present application and does not limit the present application. Any modification, equivalent replacement and improvement made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. An air spring that automatically adjusts air pressure, characterized in that, include: A base, one end of which is provided with a gas inlet and a gas outlet; An airbag, the open end of which is fitted onto the other end of the base; the closed end of the airbag is movable along the height direction of the base; the inner side of the airbag and the inner side of the base together form a first air chamber; the first air chamber is respectively connected to the gas inlet and the gas outlet. A pressure balancing device, one end of which is located on the side of the airbag facing the base; the other end of which is located on the side of the base facing the airbag. The airbag has a balance region within its closed end's moving area; the air pressure balancing device is used to close the gas inlet and the gas outlet when the airbag moves into the balance region, and to adjust the opening of the gas inlet and the gas outlet respectively when the airbag moves outside the balance region; the air pressure balancing device can adjust the size of the balance region.

2. The air spring with automatic air pressure adjustment as described in claim 1, characterized in that, The pressure balancing device includes: A first housing, one end of which is disposed on the side of the base facing the airbag; the height direction of the first housing is parallel to the axial direction of the base; the first housing has a hollow space along its own height direction; A piston column, the first end of which is disposed on the side of the airbag facing the base; the second end of which is movably disposed within the hollow space; An adjustment component is disposed on the base; Wherein, the outer side of the piston rod slides and rubs against the inner side of the first housing; the side of the piston rod facing the base and the inner side of the first housing together form a second air chamber; the second air chamber includes a balance zone; the piston rod is used to move its second end into the balance zone when the airbag moves into the balance zone, and to move its second end out of the balance zone when the airbag moves out of the balance zone.

3. The air spring with automatic air pressure adjustment as described in claim 2, characterized in that, The base has a first through hole; one end of the first through hole is connected to the second air chamber; the adjustment component includes: A pressure transmitting element is disposed on the base away from the airbag along a direction perpendicular to the axis of the base; one end of the pressure transmitting element is connected to the other end of the first through hole. An opening and closing component is disposed on the base on the side away from the airbag; one end of the opening and closing component is connected to the pressure transmission component; the opening and closing component has an external input port and an external output port; the external input port can be connected to the gas input port; the external output port can be connected to the gas output port. The pressure transmitting element is used to reflect the pressure change in the second air chamber to the opening and closing element; the opening and closing element is used to control the opening degree of the gas inlet and the gas outlet according to the pressure change in the second air chamber reflected by the pressure transmitting element.

4. The air spring with automatic air pressure adjustment as described in claim 3, characterized in that, The pressure transmission component includes: The second housing is disposed on the base away from the airbag along a direction perpendicular to the axis of the base; the second housing has a second through hole on its side facing the axis of the base; the second through hole communicates with the first through hole; A piston block is movably disposed within the second housing along the length direction of the second housing; the side of the piston block slides and rubs against the inner side of the second housing; a third air chamber is formed between the side of the piston block facing the axis of the base and the inner sidewall of the second housing; the third air chamber communicates with the second air chamber.

5. The air spring with automatic air pressure adjustment as described in claim 4, characterized in that, The pressure balancing device further includes a third through hole, which is located on the side of the second housing away from the first through hole.

6. The air spring with automatic air pressure adjustment as described in claim 3, characterized in that, The opening / closing component includes: An air intake opening / closing component is disposed on the side of the pressure transmission component away from the first through hole along a direction perpendicular to the axis of the base; one end of the air intake opening / closing component is connected to the pressure transmission component; the air intake opening / closing component is used to control the opening of the gas inlet when the pressure in the second air chamber reaches a first threshold; the air intake opening / closing component can adjust the size of the first threshold. An exhaust valve is provided on the side of the inlet valve away from the pressure transmission member, along an axis perpendicular to the base; the exhaust valve is connected to the inlet valve; the exhaust valve is used to control the gas outlet to open when the pressure in the second chamber reaches a second threshold; the exhaust valve is adjustable to the size of the second threshold. Wherein, the first threshold is greater than the second threshold.

7. The air spring with automatic air pressure adjustment as described in claim 6, characterized in that, The air intake opening / closing component includes: A third housing is disposed on the side of the pressure transmission member away from the first through hole along a direction perpendicular to the axis of the base; the external input port is provided on the side of the third housing away from the base; A first sealing member is movably disposed within the third housing along the length direction of the third housing; the first sealing member slides and rubs against the base on its side facing the base; the first sealing member is movable to allow the external inlet to be connected to or isolated from the gas inlet; A first telescopic rod, one end of which is connected to the first closure member; the other end of which is connected to the pressure transmitting member; the first telescopic rod is arranged along the length direction of the third housing; the first telescopic rod is capable of telescopic extension and retraction along the length direction of the third housing; the first telescopic rod is used to adjust the distance from the side of the first closure member near the pressure transmitting member to the inner side of the third housing near the end of the pressure transmitting member. The exhaust opening / closing component includes: A fourth housing is disposed on the side of the third housing away from the pressure transmitting member along a direction perpendicular to the axis of the base; the external input port is provided on the side of the fourth housing away from the pressure transmitting member; The second sealing member is movably disposed within the fourth housing along the length direction of the fourth housing; the second sealing member slides and rubs against the base on its side facing the base; the second sealing member is movable to allow the external outlet to be connected to or isolated from the gas inlet; The second telescopic rod has one end connected to the second closure member and the other end connected to the end of the first closure member facing the second closure member. The second telescopic rod is arranged along the length direction of the fourth housing. The second telescopic rod is capable of extending and retracting along the length direction of the fourth housing. The second telescopic rod is used to adjust the distance from the side of the second closure member away from the third housing to the inner side of the fourth housing away from the third housing.

8. The air spring with automatic air pressure adjustment as described in claim 7, characterized in that, The pressure balancing device also includes a pressure relief valve, which is located on the side of the third housing facing the pressure transmission element; the pressure relief valve is used to discharge gas from the third housing when the pressure inside the third housing is greater than the input pressure.

9. A method for adjusting air pressure, applied to an air spring that automatically adjusts air pressure as described in any one of claims 1 to 8, characterized in that, The method includes: Obtain information on air pressure regulation requirements; According to the air pressure regulation requirements, the air spring that automatically adjusts the air pressure is controlled to perform the adjustment operation.

10. The air pressure adjustment method as described in claim 9, characterized in that, The air pressure adjustment requirements include altitude adjustment requirement data and sensitivity adjustment requirement data; the step of controlling the automatically adjusting air spring to perform adjustment operations according to the air pressure adjustment requirements includes: Based on the height adjustment requirement data, the air pressure balancing device is controlled to perform a first adjustment operation; the first adjustment operation is used to control the opening and closing of the gas inlet or the gas outlet; Based on the sensitivity adjustment requirement data, the pressure balancing device is controlled to perform a second adjustment operation; the second adjustment operation is used to adjust the size of the balance region.

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