CN115450979A - Gas strut device, automobile and method for adjusting internal pressure by gas strut device - Google Patents

Abstract

The invention discloses a gas strut device, an automobile and a method for adjusting internal pressure of the gas strut device, wherein the gas strut device comprises a cylinder component, an inflation structure and a pressure adjusting mechanism, the cylinder component comprises a cylinder barrel and a piston rod which extend along a first direction, the cylinder barrel is provided with a piston cavity, the piston rod can be movably installed in the piston cavity along the first direction, the inner wall surface of the piston cavity is provided with an air inlet and an air outlet which are arranged at intervals, and the air outlet is used for being communicated with the external environment; the inflation structure is provided with a high-pressure cavity for containing high-pressure gas, and the high-pressure cavity is communicated with the gas inlet; the pressure regulating mechanism is arranged in the piston cavity and can open or close the air inlet or the air outlet. The invention aims to solve the problem that the existing gas stay bar is limited to use in an environment with large temperature difference.

Description

Gas strut device, automobile and method for adjusting internal pressure by gas strut device

Technical Field

The invention relates to the technical field of gas strut rods, in particular to a gas strut device, an automobile and a method for adjusting internal pressure of the gas strut device.

Background

The gas vaulting pole cylinder is filled with high-pressure inert gas, and this high-pressure inert gas also is the source of vaulting pole power, but atmospheric pressure in the cylinder receives the temperature influence great, and in low temperature environment, cylinder atmospheric pressure reduces, and the outside power of exporting of vaulting pole piston rod reduces, leads to the vaulting pole can't be quick prop up the switching piece and can't effectually support the switching piece and target in place, and this results in the gas vaulting pole to use in the environment that the difference in temperature is big limited.

Disclosure of Invention

The invention mainly aims to provide an air supporting device, an automobile and a method for adjusting internal pressure by the air supporting device, and aims to solve the problem that the existing air supporting rod is limited to be used in an environment with large temperature difference.

In order to achieve the above object, the present invention provides an air supporting device, including:

the air cylinder assembly comprises a cylinder barrel and a piston rod, the cylinder barrel extends along a first direction, the piston barrel is provided with a piston cavity, the piston rod can be movably installed in the piston cavity along the first direction, the inner wall surface of the piston cavity is provided with an air inlet and an air outlet which are arranged at intervals, and the air outlet is used for being communicated with the external environment;

the inflation structure is provided with a high-pressure cavity for containing high-pressure gas, and the high-pressure cavity is communicated with the air inlet; and the number of the first and second groups,

and the pressure regulating mechanism is arranged in the piston cavity and can open or close the air inlet or the air outlet.

Optionally, the pressure regulating mechanism comprises:

the two electromagnetic valves are respectively arranged at the air inlet and the air outlet;

the two controllers are respectively and electrically connected with the two electromagnetic valves; and the number of the first and second groups,

and the pressure sensing assembly is arranged in the piston cavity, is electrically connected with the two controllers and is used for sensing the pressure change in the piston cavity.

Optionally, the piston cavity comprises a cavity body extending along a first direction and an accommodating cavity communicated with the cavity body and extending along the radial direction of the cavity body;

the pressure sensing assembly includes:

the two second contact parts are respectively connected with the corresponding controllers through electric wires, the two second contact parts are arranged at intervals along the extending direction of the accommodating cavity, and at least part of each second contact part is positioned in the accommodating cavity; and the number of the first and second groups,

the movable seat is respectively connected with the two controllers through two electric wires, can be movably arranged in the accommodating cavity along the extending direction of the accommodating cavity and is positioned between the two second contact parts, and is provided with a first contact part;

in the moving stroke of the movable seat, the first contact part can be selectively contacted with one of the second contact parts to conduct the circuit of the corresponding controller.

Optionally, two first contact portions are provided, and the two first contact portions are provided at two opposite ends of the movable seat along the first direction.

Optionally, the movable seat and each of the second contact portions are provided as a conductive metal sheet, and the outer surface of the movable seat forms the first contact portion.

Optionally, the pressure sensing assembly further includes an elastic member having the same extending direction as the accommodating cavity, one end of the elastic member is fixedly connected to the cavity wall of the accommodating cavity, and the other end of the elastic member is connected to the movable seat.

Optionally, each of the solenoid valves is mounted with a damper.

Optionally, the inflation structure includes a reservoir sleeve sleeved on the outer surface of the cylinder, the reservoir sleeve and the outer wall of the cylinder define the high-pressure chamber, and the reservoir sleeve covers the air inlet.

The invention also provides an automobile, which comprises the air supporting device, wherein the air supporting device comprises:

the air cylinder assembly comprises a cylinder barrel and a piston rod, the cylinder barrel extends along a first direction, the piston barrel is provided with a piston cavity, the piston rod can be movably installed in the piston cavity along the first direction, the inner wall surface of the piston cavity is provided with an air inlet and an air outlet which are arranged at intervals, and the air outlet is used for being communicated with the external environment;

the inflation structure is provided with a high-pressure cavity for containing high-pressure gas, and the high-pressure cavity is communicated with the gas inlet; and the number of the first and second groups,

and the pressure regulating mechanism is arranged in the piston cavity and can open or close the air inlet or the air outlet.

The invention also provides a method for adjusting the internal pressure of the air supporting device, which is used in the air supporting device and comprises the following steps:

acquiring actual pressure in the piston cavity;

comparing the actual pressure intensity with a set pressure intensity;

when the actual pressure is lower than the set pressure, controlling a solenoid valve at the air inlet to be opened to communicate with the high-pressure cavity;

and when the actual pressure is higher than the set pressure, controlling an electromagnetic valve at the air outlet to be opened to communicate with the external environment.

According to the technical scheme, the piston rod is movably arranged in the piston cavity along a first direction, when the ambient temperature is reduced, the air pressure of the piston cavity is reduced, the driving force which can be provided by the piston cavity to the piston rod is reduced, and at the moment, the pressure regulating mechanism opens the air inlet so that high-pressure air in the high-pressure cavity enters the piston cavity, and the air pressure of the piston cavity is improved; when the environmental temperature rises, the air pressure of the piston cavity is increased, the driving force which can be provided by the piston to the piston rod is increased, and at the moment, the pressure regulating mechanism opens the exhaust port to enable the piston cavity to be communicated with the external environment, so that the air pressure of the piston cavity is reduced; therefore, the air pressure of the piston cavity can be adjusted corresponding to different environmental temperatures, so that the air supporting device can normally operate.

Drawings

In order to more clearly illustrate the embodiments or technical solutions of the present invention, the drawings used in the embodiments or technical solutions of the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the structures shown in the drawings without creative efforts.

FIG. 1 is a schematic perspective view of an embodiment of an inflatable restraint apparatus provided by the present invention;

FIG. 2 is a perspective view of the cylinder barrel, gas strut and pressure regulating mechanism of FIG. 1;

FIG. 3 is a schematic partial cross-sectional view of FIG. 1;

FIG. 4 is an enlarged schematic view of FIG. 3 at detail A;

FIG. 5 is a schematic flow chart illustrating an embodiment of a method for adjusting internal pressure of a gas strut device according to the present invention.

The reference numbers illustrate:

reference numerals	Name (R)	Reference numerals	Name(s)
				100	Air supporting device	3	Pressure regulating mechanism
1	Cylinder assembly	31	Electromagnetic valve
				11	Cylinder barrel	32	Controller
111	Piston cavity	321	Pressurization controller
				1111	Cavity body	322	Pressure relief controller
1112	Air inlet	33	Pressure sensing assembly
				1113	Exhaust port	331	Second contact part
112	Containing cavity	332	Movable seat
				12	Piston rod	3321	First contact part
2	Air inflation structure	333	Elastic piece
				21	Saving sleeve	334	Electric wire
211	High pressure cavity

The implementation, functional features and advantages of the objects of the present invention will be further explained with reference to the accompanying drawings.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

It should be noted that, if directional indications (such as up, down, left, right, front, back, 8230; etc.) are involved in the embodiment of the present invention, the directional indications are only used for explaining the relative positional relationship between the components, the motion situation, etc. in a specific posture (as shown in the figure), and if the specific posture is changed, the directional indications are correspondingly changed.

In addition, if there is a description of "first", "second", etc. in an embodiment of the present invention, the description of "first", "second", etc. is for descriptive purposes only and is not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of the feature. In addition, the meaning of "and/or" appearing throughout includes three juxtapositions, exemplified by "A and/or B" including either A or B or both A and B. In addition, technical solutions between various embodiments may be combined with each other, but must be realized by a person skilled in the art, and when the technical solutions are contradictory or cannot be realized, such a combination should not be considered to exist, and is not within the protection scope of the present invention.

The gas vaulting pole cylinder is filled with high-pressure inert gas, and this high-pressure inert gas also is the source of vaulting pole power, but atmospheric pressure in the cylinder receives the temperature influence great, and in low temperature environment, cylinder atmospheric pressure reduces, and the outside power of exporting of vaulting pole piston rod reduces, leads to the vaulting pole can't be quick prop up the switching piece and can't effectually support the switching piece and target in place, and this results in the gas vaulting pole to use in the environment that the difference in temperature is big limited.

In view of this, the present invention provides an air supporting device, an automobile and a method for adjusting an internal pressure by the air supporting device, wherein the air supporting device can adjust an air pressure in the piston cavity to ensure a normal operation of the piston rod, fig. 1 to 4 are an embodiment of the air supporting device provided by the present invention, and fig. 5 is an embodiment of the method for adjusting an internal pressure by the air supporting device provided by the present invention.

Referring to fig. 1 to 3, the gas strut device 100 includes a cylinder assembly 1, an inflation structure 2 and a pressure regulating mechanism 3, the cylinder assembly 1 includes a cylinder 11 and a piston rod 12 extending along a first direction, the cylinder 11 is provided with a piston cavity 111, the piston rod 12 is movably mounted in the piston cavity 111 along the first direction, an air inlet 1112 and an air outlet 1113 are disposed on an inner wall surface of the piston cavity 111 at an interval, and the air outlet 1113 is used for communicating with an external environment; the inflatable structure 2 is provided with a high-pressure cavity 211 for containing high-pressure gas, and the high-pressure cavity 211 is communicated with the gas inlet 1112; the pressure regulating mechanism 3 is installed in the piston cavity 111, and the pressure regulating mechanism 3 can open or close the air inlet 1112 or the air outlet 1113.

In the technical scheme of the present invention, the piston rod 12 is movably mounted in the piston cavity 111 along a first direction, when the ambient temperature is reduced, the air pressure of the piston cavity 111 becomes smaller, the driving force which can be provided by the piston cavity 111 to the piston rod 12 is reduced, and at this time, the pressure regulating mechanism 3 opens the air inlet 1112, so that the high-pressure air in the high-pressure cavity 211 enters the piston cavity 111, and the air pressure of the piston cavity 111 is increased; when the ambient temperature rises, the air pressure of the piston cavity 111 increases, the thrust which the piston can provide to the piston rod 12 by force increases, and at this time, the pressure regulating mechanism 3 opens the exhaust port 1113 to enable the piston cavity 111 to be communicated with the external environment, so as to reduce the air pressure of the piston cavity 111; thus, the air pressure of the piston cavity 111 can be adjusted according to different environmental temperatures, so that the gas strut device 100 can operate normally.

It should be noted that the piston rod 12 is used to support the opening/closing member, when the ambient temperature decreases, the driving force provided by the piston cavity 111 to the piston rod 12 decreases, so that when the piston rod 12 moves toward the outside of the piston cavity 111, the portion extending out of the piston cavity 111 becomes short, which results in that the piston rod 12 cannot support the opening/closing member or cannot support the opening/closing member in place, and when the ambient temperature increases, the driving force provided by the piston cavity 111 to the piston rod 12 increases, which results in that when the piston rod 12 moves toward the inside of the piston cavity 111 to be accommodated in the piston cavity 111, the portion extending out of the piston cavity 111 becomes long, which results in that the opening/closing member cannot be closed.

Specifically, in the present embodiment, referring to fig. 3 and 4, the pressure regulating mechanism 3 includes two electromagnetic valves 31, two controllers 32 and a pressure sensing assembly 33, where the two electromagnetic valves 31 are respectively disposed at the air inlet 1112 and the air outlet 1113; two controllers 32 electrically connected to the two electromagnetic valves 31, respectively; the pressure sensing assembly 33 is disposed in the piston cavity 111, electrically connected to both of the controllers 32, and configured to sense a pressure change in the piston cavity 111. The controller 32 electrically connected to the air inlet 1112 is set as a pressurization controller 321, and the controller 32 electrically connected to the air outlet 1113 is set as a pressure relief controller 322.

The pressure of the high-pressure cavity 211 is higher than that of the piston cavity 111, and the pressure of the piston cavity 111 is higher than that of the external environment; when the pressure in the piston chamber 111 becomes higher, the pressure sensing assembly 33 is electrically connected to the pressure relief controller 322, and the pressure relief controller 322 controls the corresponding solenoid valve 31 to open the exhaust port 1113 to reduce the pressure in the piston chamber 111, and similarly, when the pressure in the piston chamber 111 becomes lower, the pressurization controller 321 controls the corresponding solenoid valve 31 to open the intake port 1112 to increase the pressure in the piston chamber 111; therefore, the structure is simple and the control is flexible.

More specifically, referring to fig. 3 and 4, the piston chamber 111 includes a chamber body 1111 extending in a first direction and a receiving chamber 112 communicating with the chamber body 1111 and extending in a radial direction thereof; the pressure sensing assembly 33 includes two second contact portions 331 and a movable seat 332, the two second contact portions 331 are respectively connected to the corresponding controllers 32 through electric wires 334, the two second contact portions 331 are arranged at intervals along the extending direction of the accommodating cavity 112, and each second contact portion 331 is at least partially located in the accommodating cavity 112; the movable seat 332 is connected to the two controllers 32 through two wires 334, the movable seat 332 is movably mounted in the accommodating cavity 112 along the extending direction of the accommodating cavity 112 and located between the two second contact portions 331, and the movable seat 332 is provided with a first contact portion 3321; during the moving stroke of the movable seat 332, the first contact portion 3321 selectively contacts one of the second contact portions 331 to conduct the corresponding circuit of the controller 32.

In this embodiment, referring to fig. 2 to 4, the second contact portion 331 close to the piston cavity 111 is connected to the pressurization controller 321 through an electric wire 334, the second contact portion 331 far from the piston cavity 111 is connected to the pressure relief controller 322 through an electric wire 334, the first contact portion 3321 is located between the two second contact portions 331, when the ambient temperature decreases, the movable seat 332 moves close to the piston cavity 111 to drive the first contact portion 3321 to abut against the corresponding second contact portion 331, and the circuit of the pressurization controller 321 is conducted, so that the pressurization controller 321 can operate to control to open the air inlet 1112 and increase the pressure of the piston cavity 111; when the ambient temperature rises, the movable seat 332 moves away from the piston cavity 111 to drive the first contact portion 3321 to abut against the corresponding second contact portion 331, so as to conduct the circuit of the pressure relief controller 322, so as to control to open the exhaust port 1113 and reduce the pressure of the piston cavity 111; in this way, the movable seat 332 can move away from the piston cavity 111 and close to the piston cavity 111 according to the temperature increase and decrease, so that the gas strut device 100 can adaptively adjust the pressure of the piston cavity 111 to ensure the normal operation.

In the present invention, two first contact portions 3321 are provided, and the positions of the two first contact portions 3321 are not limited, and two first contact portions 3321 may be distributed on two sides of the movable seat 332 along the moving direction of the movable seat 332, in this embodiment, referring to fig. 4, two first contact portions 3321 are provided at two ends of the movable seat 332 opposite to each other along the first direction, and two corresponding second contact portions 331 are provided at two side walls of the accommodating chamber 112 opposite to each other along the first direction, so that the two first contact portions 3321 can be prevented from interfering with each other, when the two second contact portions 331 are located at the same end, and when the pressure of the accommodating chamber 112 is too high or too low, one of the first contact portions 3321 passes over the corresponding second contact portion 331, so that the other first contact portion 3321 and the second contact portion 331 contact each other, which results in an erroneous circuit conduction of the controller 32, and when the piston chamber 111 needs to be pressurized, the exhaust port 1113 is opened.

In this embodiment, the movable seat 332 is not limited to be disposed, and the movable seat 332 may be disposed as a plastic component, and the first contact portion 3321 is disposed as a conductive metal sheet; in this embodiment, the movable seat 332 and each of the second contact portions 331 are made of a conductive metal sheet, and the outer surface of the movable seat 332 forms the first contact portion 3321. Therefore, the structure is simple, the setting is easy, and the resources are saved.

Referring to fig. 4, in order to enable the movable seat 332 to move close to the piston cavity 111 when the temperature decreases and move away from the piston cavity 111 when the temperature increases, the pressure sensing assembly 33 further includes an elastic member 333 extending in the same direction as the accommodating cavity 112, one end of the elastic member 333 is fixedly connected to the wall of the accommodating cavity 112, and the other end is connected to the movable seat 332. In this embodiment, when the piston rod 12 is in normal operation, the movable seat 332 is located in the middle of the accommodating cavity 112 and located between the two second contact portions 331, the movable seat 332 is equivalent to a piston disposed in the accommodating cavity 112, the pressure in the piston cavity 111 increases, the air pressure pushes the movable seat 332 to move away from the piston cavity 111, so that the elastic member 333 is compressed to the first contact portion 3321 to abut against the second contact portion 331 away from the piston cavity 111, the circuit of the pressure relief controller 322 is conducted, the corresponding electromagnetic valve 31 is controlled to open the exhaust port 1113, the pressure in the piston cavity 111 is reduced, and the elastic member 333 rebounds to the middle of the accommodating cavity 112; similarly, when the pressure in the piston chamber 111 decreases, the elastic element 333 drives the movable seat 332 to approach the piston chamber 111 until the first contact portion 3321 is connected to the second contact portion 331 that is adjacent to the piston chamber 111, and the circuit of the pressurization controller 321 is turned on, so as to control the corresponding solenoid valve 31 to open the air inlet 1112, communicate with the high pressure chamber 211, increase the pressure in the piston chamber 111, and at this time, the movable seat 332 is pushed to the middle of the accommodating chamber 112 by the air pressure; specifically, the elastic member 333 is provided as a spring; therefore, the pressure intensity of the piston cavity 111 can be adjusted in a self-adaptive mode, the structure is simple, and the adjustment is convenient.

It should be noted that, the installation position of the elastic element 333 is not limited in the present invention, in this embodiment, one end of the elastic element 333 is connected to the cavity wall of the accommodating cavity 112 away from the piston cavity 111, so that the elastic element 333 is in a compressed state in a normal state of the piston cavity 111, the elastic element 333 may also be connected to the cavity wall of the accommodating cavity 112 close to the piston cavity 111, at this time, the elastic element 333 is in a stretched state in the normal state of the piston cavity 111, and a specific movement stroke is not described in detail.

In this embodiment, each of the solenoid valves 31 is installed with a damper, and after the controller 32 starts to control the corresponding solenoid valve 31, the controller controls the solenoid valve 31 to close again, and the damper prevents the solenoid valve 31 from closing at a set time, which is set by an operator, and is not limited herein. During the set time, the exhaust port 1113 exhausts to reduce the pressure of the piston chamber 111, or the intake port 1112 admits high-pressure gas to increase the pressure of the piston chamber 111.

Specifically, in this embodiment, the inflation structure 2 includes an accumulator sleeve 21 sleeved on the outer surface of the cylinder 11, the accumulator sleeve 21 and the outer wall of the cylinder 11 define the high-pressure chamber 211, and the accumulator sleeve 21 is disposed to cover the air inlet 1112, so that when the air inlet 1112 is opened, the high-pressure gas in the high-pressure chamber 211 enters the piston chamber 111 from the air inlet 1112, and the accumulator sleeve 21 is sleeved on the outer surface of the cylinder 11, so as to provide the high-pressure gas and reduce space occupation.

The invention further provides an automobile, which comprises the air supporting device 100, the specific structure of the air supporting device 100 refers to the above embodiments, and the automobile adopts all technical solutions of all the above embodiments, so that all the beneficial effects brought by the technical solutions of the above embodiments are also achieved, and no further description is given here.

Referring to fig. 5, the present invention further provides a method for adjusting an internal pressure of an air supporting device 100, and the method for adjusting an internal pressure of an air supporting device 100 is used in the air supporting device 100, and comprises the following steps:

s10, acquiring actual pressure in the piston cavity 111;

s20, comparing the actual pressure intensity with a set pressure intensity;

s30, when the actual pressure is lower than the set pressure, controlling a solenoid valve 31 at the air inlet 1112 to be opened to communicate with the high-pressure cavity 211;

and S40, when the actual pressure is higher than the set pressure, controlling the electromagnetic valve 31 at the exhaust port 1113 to be opened to communicate with the external environment.

In this embodiment, the air pressure P1 in the piston cavity 111 is determined according to the normal output force value F1 of the piston rod 12, the air pressure in the high-pressure cavity 211 is P2, and P2> P1. And adjusting the mechanical parameters of the spring according to the tolerance a of the normal output force value F1. The actual output force value F of the piston rod 12 can ensure that the movable seat 332 is in contact with the second contact portion 331 close to the piston cavity 111 when the actual output force value F of the piston rod 12 is less than F1-a, and the movable seat 332 is in contact with the second contact portion 331 far away from the piston cavity 111 when the actual output force value F of the piston rod 12 is greater than F1+ a. The times t1, t2 at which the damper controls the two solenoid valves 31 to close are set. The movable seat 332 can be ensured to be restored to the initial position within the time t1 and the time t2, and the time t1 and the time t2 are not limited as long as the movable seat 332 can be restored to the initial position.

When the external environment temperature is too low, the air pressure in the piston cavity 111 is reduced, the actual internal pressure P of the piston cavity 111 is lower than P1, the movable seat 332 is under the thrust of the spring and moves towards the second contact part 331 close to the piston cavity 111 until contacting, at this time, the pressurization controller 321 controls the corresponding electromagnetic valve 31 to be opened, the high-pressure air is filled into the piston cavity 111, the air pressure in the piston cavity 111 is increased, at this time, the movable seat 332 is separated from the second contact part 331 close to the piston cavity 111, the electromagnetic valve 31 is slowly closed under the action of the damper, the closing time of the damper is set to be t1 seconds, and within 0-t1 seconds, the air in the high-pressure cavity 211 is continuously filled into the piston cavity 111 until the movable seat 332 recovers to the initial position, and at this time, the force value of the piston rod 12 recovers to the normal working state F1.

When the external temperature is too high, the air pressure in the piston cavity 111 is increased, the air pressure in the piston cavity 111 is higher than P1, the movable seat 332 moves towards the second contact portion 331 away from the piston cavity 111 until the movable seat contacts the second contact portion 331, at this time, the pressure relief controller 322 controls the corresponding electromagnetic valve 31 to be opened, the air in the piston cavity 111 is released to the atmosphere, the air pressure in the piston cavity 111 is reduced, at this time, the movable seat 332 and the second contact portion 331 away from the piston cavity 111 are immediately separated, in this process, the corresponding electromagnetic valve 31 is slowly closed under the action of the damper, the closing time is set to be t2 seconds, the air in the piston cavity 111 is continuously released within 0-t2 seconds until the piston returns to the initial position, and at this time, the force value of the piston rod 12 returns to the normal working state F1.

The above description is only a preferred embodiment of the present invention, and is not intended to limit the scope of the present invention, and all modifications and equivalents of the present invention, which are made by the contents of the present specification and the accompanying drawings, or directly/indirectly applied to other related technical fields, are included in the scope of the present invention.

Claims (10)

1. An inflatable restraint device, comprising:

the air cylinder assembly comprises a cylinder barrel and a piston rod, the cylinder barrel extends along a first direction, the piston barrel is provided with a piston cavity, the piston rod can be movably installed in the piston cavity along the first direction, the inner wall surface of the piston cavity is provided with an air inlet and an air outlet which are arranged at intervals, and the air outlet is used for being communicated with the external environment;

the inflation structure is provided with a high-pressure cavity for containing high-pressure gas, and the high-pressure cavity is communicated with the air inlet; and (c) a second step of,

and the pressure regulating mechanism is arranged in the piston cavity and can open or close the air inlet or the air outlet.

2. The gas strut device according to claim 1, wherein said pressure regulating mechanism comprises:

the two electromagnetic valves are respectively arranged on the air inlet and the air outlet;

the two controllers are respectively and electrically connected with the two electromagnetic valves; and (c) a second step of,

and the pressure sensing assembly is arranged in the piston cavity, is electrically connected with the two controllers and is used for sensing the pressure change in the piston cavity.

3. The gas strut device according to claim 2, wherein said piston chamber includes a chamber body extending in a first direction and a receiving chamber communicating with said chamber body and extending in a radial direction thereof;

the pressure sensing assembly includes:

the two second contact parts are respectively connected with the corresponding controllers through electric wires and are arranged at intervals along the extending direction of the accommodating cavity, and at least part of each second contact part is positioned in the accommodating cavity; and the number of the first and second groups,

the movable seat is respectively connected with the two controllers through two electric wires, can be movably arranged in the accommodating cavity along the extending direction of the accommodating cavity and is positioned between the two second contact parts, and is provided with a first contact part;

in the moving stroke of the movable seat, the first contact part can be selectively contacted with one of the second contact parts to conduct the circuit of the corresponding controller.

4. The gas strut device according to claim 3, wherein there are two of said first contact portions, and two of said first contact portions are provided at opposite ends of said movable seat in the first direction.

5. The gas strut device according to claim 3, wherein said movable seat and each of said second contact portions are provided as an electrically conductive metal sheet, and an outer surface of said movable seat forms said first contact portion.

6. The gas strut device according to claim 4, wherein the pressure sensing assembly further comprises an elastic member extending in the same direction as the accommodating cavity, one end of the elastic member is fixedly connected to the cavity wall of the accommodating cavity, and the other end of the elastic member is connected to the movable seat.

7. An air supporting device as claimed in claim 2, wherein each of said solenoid valves is mounted with a damper.

8. The gas strut device according to claim 1, wherein the gas-filled structure comprises a reservoir sleeve sleeved on the outer surface of the cylinder, the reservoir sleeve and the outer wall of the cylinder define the high-pressure chamber, and the reservoir sleeve is arranged to cover the gas inlet.

9. An automobile characterized by comprising the air supporting device as recited in claims 1 to 8.

10. A method for adjusting an internal pressure of an air supporting device, which is used in the air supporting device according to any one of claims 1 to 8, comprising the steps of:

acquiring the actual pressure in the piston cavity;

comparing the actual pressure intensity with a set pressure intensity;

when the actual pressure is lower than the set pressure, controlling a solenoid valve at the air inlet to be opened to communicate with the high-pressure cavity;

and when the actual pressure is higher than the set pressure, controlling an electromagnetic valve at the air outlet to be opened to communicate with the external environment.

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