Wheel side valve, tire inflation and deflation system and vehicle

Abstract

The invention provides a wheel side valve, a tire inflation and deflation system and a vehicle, and the wheel side valve comprises a valve body which is arranged on a wheel; the valve core is arranged in the valve body and is matched with the valve body to form a sealing structure; the air inlet, the inflation port and the exhaust port are formed in the valve body, the air inlet is connected with an air inlet pipeline of the wheel, and air in the air inlet pipeline pushes the valve element to move in the valve body; when the valve element moves to the exhaust position, the inflation opening, the valve element and the exhaust opening are sequentially communicated to form an exhaust channel of the wheel, and when the valve element moves to the inflation position, the air inlet, the valve element and the inflation opening are sequentially communicated to form an inflation channel of the wheel. According to the wheel side valve, the tire inflation and deflation system and the vehicle, the exhaust efficiency of the wheel side valve can be improved, and the size and weight of the wheel side valve are reduced.

Description

Technical Field

[0001] The invention relates to the technical field of tire inflation and deflation systems, and in particular to a wheel side valve, a tire inflation and deflation system and a vehicle. Background Art

[0002] The central inflation and deflation system of a vehicle's tires is used to automatically inflate and deflate the vehicle while it is driving. The wheel-side valve is an important component in the inflation and deflation system, and its exhaust efficiency affects the overall exhaust function of the inflation and deflation system.

[0003] The inflation and exhaust process of the wheel side valve is generally controlled based on the intake pipe. However, at present, the exhaust efficiency of the wheel side valve is low. Summary of the invention

[0004] In view of the above-mentioned shortcomings of the prior art, an object of the present invention is to provide a wheel side valve, a tire inflation and deflation system and a vehicle, which can improve the exhaust efficiency of the wheel side valve.

[0005] To achieve the above-mentioned and other related purposes, the present invention provides a wheel-side valve, comprising:

[0006] A valve body, arranged on the wheel;

[0007] A valve core is disposed in the valve body and cooperates with the valve body to form a sealing structure;

[0008] An air inlet, a charging port and an exhaust port are arranged on the valve body, the air inlet is connected to the air inlet pipeline of the wheel, and the gas in the air inlet pipeline pushes the valve core to move in the valve body;

[0009] Among them, when the valve core moves to the exhaust position, the inflation port, the valve core and the exhaust port are connected in sequence to form the exhaust channel of the wheel, and when the valve core moves to the inflation position, the air inlet, the valve core and the inflation port are connected in sequence to form the inflation channel of the wheel.

[0010] In one embodiment of the present invention, the wheel-side valve further comprises:

[0011] A first channel is formed at the exhaust position of the valve core, and the charging port, the first channel and the exhaust port are sequentially connected; and

[0012] A second channel is formed at the inflation position of the valve core, and the air inlet, the second channel and the inflation port are sequentially connected.

[0013] In one embodiment of the present invention, the valve core comprises:

[0014] An outer valve core is slidably disposed in the valve body;

[0015] An inner valve core is slidably disposed in the outer valve core;

[0016] an outer air hole, which is disposed on the outer valve core, and when the valve core moves to the exhaust position, the inflation port, the outer air hole and the exhaust port are sequentially connected to form the first channel; and

[0017] The inner air hole is arranged on the inner valve core, and when the valve core moves to the inflation position, the air inlet, the inner air hole, the outer air hole and the inflation port are connected in sequence to form the second channel.

[0018] In one embodiment of the present invention, the valve core further includes:

[0019] A communication hole is provided at one end of the outer valve core opposite to the air inlet;

[0020] Among them, when the gas pressure in the intake pipe is a first pressure value, the gas pushes the outer valve core to slide in the valve body, and when the gas pressure in the intake pipe is a second pressure value, the gas pushes the outer valve core to slide in the valve body, and pushes the inner valve core to slide in the outer valve core through the connecting hole, and the second pressure value is greater than the first pressure value.

[0021] In one embodiment of the present invention, the wheel-side valve further includes a reset assembly connected between the valve body and the valve core, and the reset assembly includes:

[0022] an outer spring, which is sleeved on the surface of the outer valve core, and one end of which is connected to the outer wall of the outer valve core, and the other end of which is connected to the inner wall of the valve body; and

[0023] An inner spring has one end connected to the inner wall of the valve body and the other end extending into the interior of the outer valve core and connected to the end of the inner valve core.

[0024] In one embodiment of the present invention, the valve core also includes a first sealing ring, which is arranged on the surface of the outer valve core close to the inflation port, and a first sealed cavity is formed between the first sealing ring and the inner wall of the valve body, and the inflation port is located in the first sealed cavity area.

[0025] In one embodiment of the present invention, the wheel-side valve further includes a one-way exhaust valve disposed on the exhaust port.

[0026] In one embodiment of the present invention, the valve core also includes a second sealing ring, which is arranged on the surface of the outer valve core close to the exhaust port, and a second sealed cavity is formed between the first sealing ring, the second sealing ring, the inner wall of the valve body and the one-way exhaust valve, and the exhaust port is located in the second sealed cavity area.

[0027] The present invention also provides a tire inflation and deflation system, comprising the wheel side valve.

[0028] The present invention also provides a vehicle, comprising the tire inflation and deflation system.

[0029] As described above, the present invention provides a wheel-side valve, a tire inflation and deflation system, and a vehicle. When the wheel-side valve is used for exhaust, the exhaust passage does not need to pass through the air inlet, and the gas in the wheel is directly discharged from the inflation port through the valve core to the exhaust port, thereby avoiding the influence of the input air pressure of the air inlet pipeline on the exhaust efficiency and shortening the exhaust path, thereby significantly improving the exhaust efficiency of the wheel-side valve. At the same time, the inner and outer nested valve core structure of the wheel-side valve can reduce the size and weight of the wheel-side valve. Therefore, the exhaust efficiency of the inflation and deflation system using the wheel-side valve can also be significantly improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings required for describing the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other accompanying drawings can be obtained based on these accompanying drawings without paying creative work.

[0031] Figure 1 It shows a schematic cross-sectional structure diagram of the wheel-side valve of the present invention in a sealed state.

[0032] Figure 2 It shows a schematic cross-sectional structure diagram of the wheel-side valve of the present invention in the exhaust state.

[0033] Figure 3 Shown is a schematic diagram of the cross-sectional structure of the wheel-side valve of the present invention in an inflated state.

[0034] Figure 4 Shown is a schematic diagram of the cross-sectional structure of the valve core of the present invention.

[0035] Component number description:

[0036] 10. Valve body; 11. Air inlet; 12. Charging port; 13. Exhaust port; 14. First channel; 15. Second channel; 20. Valve core; 21. External valve core; 22. Internal valve core; 23. External air hole; 24. Internal air hole; 26. Connecting hole; 30. Reset assembly; 31. External spring; 32. Internal spring; 40. One-way exhaust valve; 50. First sealing ring; 51. First sealing cavity; 60. Second sealing ring; 61. Second sealing cavity; 63. Third sealing cavity. DETAILED DESCRIPTION

[0037] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0038] See also Figure 1-4 It should be noted that the illustrations provided in this embodiment are only used to illustrate the basic concept of the present invention in a schematic manner, and the drawings only show components related to the present invention rather than being drawn according to the number, shape and size of components in actual implementation. In actual implementation, the type, quantity and proportion of each component may be changed arbitrarily, and the component layout may also be more complicated.

[0039] See also Figure 1 , Figure 1 A wheel-side valve is provided in an embodiment of the present invention. The wheel-side valve can be applied to the central inflation and deflation system of a vehicle tire to improve the exhaust efficiency of the vehicle tire. Specifically, the wheel-side valve may include a valve body 10, a valve core 20, an air inlet 11, an inflation port 12 and an exhaust port 13 arranged on the valve body 10, and the valve body 10 can be installed on a wheel. The air inlet 11 on the valve body 10 can be used to connect the air inlet pipeline of the wheel. The inflation port 12 on the valve body 10 can be used to connect to the inside of the tire. The exhaust port 13 on the valve body 10 can be used to exhaust the gas in the wheel. When gas is input into the valve body 10 through the air inlet pipeline, the pressure of the gas can push the valve core 20 inside the valve body 10 to the exhaust position or the inflation position to exhaust or inflate the wheel. Among them, when the valve core 20 is in the initial sealing position in the valve body 10, the valve core 20 can form a sealing structure at the air inlet 11, the charging port 12 and the exhaust port 13 of the valve body 10. At this time, the charging port 12 of the valve body 10 is not connected to the exhaust port 13, and the wheel is not exhausted. At the same time, the air inlet 11 of the valve body 10 is not connected to the charging port 12, and the wheel is not inflated. When the valve core 20 is in the exhaust position in the valve body 10, the charging port 12, the valve core 20 and the exhaust port 13 sequentially form a wheel exhaust channel, so that the gas in the wheel is discharged through the charging port 12, the valve core 20 and the exhaust port 13 in sequence. When the valve core 20 is in the inflation position in the valve body 10, the air inlet 11, the valve core 20 and the inflation port 12 sequentially form the inflation channel of the wheel, so that the gas introduced into the air intake pipeline can be charged into the wheel through the air inlet 11, the valve core 20 and the inflation port 12 in sequence. Therefore, when this wheel-side valve is exhausting, the exhaust channel does not need to pass through the air inlet 11. The gas in the wheel is directly discharged from the inflation port 12 through the valve core 20 to the exhaust port 13, avoiding the influence of the input air pressure of the intake pipe on the exhaust efficiency and shortening the exhaust path, thereby significantly improving the exhaust efficiency of the wheel-side valve.

[0040] See also Figure 2 and Figure 3 In order to ensure the normal exhaust of the exhaust channel, a first channel 14 can be formed at the exhaust position of the valve core 20, so that the charging port 12, the first channel 14 and the exhaust port 13 are sequentially connected, thereby forming an exhaust channel that can be exhausted smoothly. Similarly, in order to ensure the normal inflation of the inflation channel, a second channel 15 can be formed at the inflation position of the valve core 20, so that the air inlet 11, the second channel 15 and the inflation port 12 are sequentially connected, thereby forming an inflation channel that can be inflated smoothly.

[0041] See also Figure 2 , Figure 3 and Figure 4 , the specific arrangement structure of the first channel 14 and the second channel 15 of the valve core 20 can be designed based on the actual inflation and exhaust requirements of the wheel-side valve. For example, the valve core 20 can be set as an integrated structure in which the outer valve core 21 is nested in the inner valve core 22, the first channel 14 can be formed on the outer valve core 21, and the second channel 15 can be formed between the inner valve core 22 and the outer valve core 21, so as to reduce the size and weight of the valve core 20 on the basis of ensuring the inflation and exhaust efficiency. Therefore, when this wheel-side valve is arranged biased towards the wheel end, the impact on balance can be reduced. Specifically, the valve core 20 may include an outer valve core 21, an inner valve core 22, an outer air hole 23 and an inner air hole 24. The outer valve core 21 can slide in the valve body 10, and the inner valve core 22 can slide in the outer valve core 21, so that the inner valve core 22 and the outer valve core 21 form an integrated valve core structure nested inside and outside. External air holes 23 may be provided on both sides of the shell of the outer valve core 21, so that when the valve core 20 moves to the exhaust position, the inflation port 12, the external air holes 23 and the exhaust port 13 are sequentially connected to form the first channel 14. Internal air holes 24 may be provided on both sides of the shell of the inner valve core 22, so that when the valve core 20 moves to the inflation position, the air inlet 11, the internal air holes 24, the external air holes 23 and the inflation port 12 are sequentially connected to form the second channel 15. At this time, the first channel 14 and the second channel 15 are integrated in the nested valve core. This nested structure can not only reduce the size of the double valve core, but also simplify and shorten the gas path of the first channel 14 and the second channel 15.

[0042] See also Figure 2 and Figure 3When the valve core 20 is set as an inner and outer nested structure of the inner valve core 22 and the outer valve core 21, the gas pressure of the air intake pipe can push the inner valve core 22 and the outer valve core 21 to move in the valve body 10 to form an exhaust channel for exhaust, or to form an inflation channel for inflation. Specifically, the gas in the air intake pipe can enter the valve body 10 through the air inlet 11 on the valve body 10 to push the outer valve core 21 to slide. Further, a connecting hole 26 can be provided at one end of the outer valve core 21 relative to the air inlet 11, so that the gas in the air intake pipe enters the connecting hole 26 through the air inlet 11, thereby entering the outer valve core 21 and pushing the inner valve core 22 to move. It should be noted that in order to meet the different position requirements of the exhaust channel and the inflation channel, when the tire is exhausted, the gas pressure in the air intake pipeline can be set to a first pressure value, at which time the gas enters the valve body 10 through the air inlet 11 and pushes the outer valve core 21 to slide in the valve body 10. When the outer valve core 21 slides to make the inflation port 12, the outer air hole 23 and the exhaust port 13 connected in sequence to form the first channel 14, the air pressure in the tire is relatively high, and the gas in the tire can be discharged from the inflation port 12, and then discharged to the exhaust port 13 through the outer air hole 23, and finally connected to the outside to achieve exhaust. When the tire is inflated, the gas pressure in the air intake line can be set to a second pressure value, and the second pressure value is greater than the first pressure value. At this time, the gas entering from the air intake port 11 can not only push the outer valve core 21 to slide in the valve body 10, but also enter the outer valve core 21 through the connecting hole 26, thereby pushing the inner valve core 22 to slide in the outer valve core 21. When the outer valve core 21 and the inner valve core 22 slide to make the air intake port 11, the inner air hole 24, the outer air hole 23 and the inflation port 12 connected in sequence to form the second channel 15, the air intake line can be connected to the inflation port 12 to achieve the inflation function. The first pressure value and the second pressure value may be set based on actual air pressure requirements and are not limited here.

[0043] See also Figure 2 and Figure 3 and Figure 4, after the valve core 20 slides to the inflation position or the exhaust position, in order to ensure that the valve core 20 can be normally reset, a reset component 30 can be provided between the valve body 10 and the valve core 20. Specifically, when the gas of the first pressure value is introduced into the air intake line, the valve core 20 can move to the exhaust position in the valve body 10 under the push of the gas pressure, and squeeze the reset component 30. Further, when the gas of the first pressure value is continuously introduced, the valve core 20 can remain in the exhaust position in the valve body 10. When the gas of the second pressure value is introduced into the air intake line, the valve core 20 can move to the inflation position in the valve body 10 under the push of the gas pressure, and squeeze the reset component 30. Further, when the gas of the second pressure value is continuously introduced, the valve core 20 can remain in the inflation position in the valve body 10. When no gas is introduced into the air intake line, the valve core 20 is no longer pushed by the gas pressure, and at the same time, the reset assembly 30 is no longer squeezed by the valve core 20, and starts to rebound and reset, and pushes the valve core 20 to reset. The specific setting structure of the reset assembly 30 can be designed based on the reset requirements of the actual valve core 20. For example, when the valve core 20 is set as an inner and outer nested structure of the inner valve core 22 and the outer valve core 21, the reset assembly 30 can include an outer spring 31 and an inner spring 32. The outer spring 31 can be sleeved on the surface of the outer valve core 21, and one end of the outer spring 31 can be connected to the outer wall of the outer valve core 21, and the other end can be connected to the inner wall of the valve body 10, so as to directly provide a reset function for the outer valve core 21. One end of the inner spring 32 can be connected to the inner wall of the valve body 10, and the other end can extend into the inner part of the outer valve core 21 and be connected to the end of the inner valve core 22, so as to directly provide a reset function for the inner valve core 22. When the gas in the intake pipeline pushes the outer valve core 21 and the inner valve core 22 to move in the valve body 10, the outer spring 31 and the inner spring 32 may be compressed accordingly. When no gas is introduced into the intake pipeline, the outer valve core 21 and the inner valve core 22 are no longer pushed by the gas pressure. At the same time, the outer spring 31 and the inner spring 32 are no longer squeezed by the outer valve core 21 and the inner valve core 22 and begin to rebound and reset, pushing the outer valve core 21 and the inner valve core 22 to reset.

[0044] See also Figure 1 , Figure 2 and Figure 3A one-way exhaust valve 40 can be provided on the exhaust port 13 of the wheel side valve. The one-way exhaust valve 40 can play a sealing role, which can exhaust gas to the outside and prevent external water and dust from entering the valve body 10 when the vehicle is wading or off-road. In order to further ensure the sealing effect in the valve core 20, a first sealing ring 50 and a second sealing ring 60 can be provided on the outer wall surface of the outer valve core 21 to ensure the sealing at the wheel inflation port 12 and the exhaust port 13. Specifically, the position, number and structure of the first sealing ring 50 and the second sealing ring 60 can be set based on actual sealing requirements. For example, an annular groove can be provided around the surface of the outer valve core 21 near the inflation port 12, and the first sealing ring 50 can be provided as an annular sealing ring and embedded in the annular groove near the inflation port 12. An annular groove can be provided around the surface of the outer valve core 21 near the exhaust port 13. The second sealing ring 60 can be provided as an annular sealing ring and embedded in the annular groove near the exhaust port 13. When the outer valve core 21 and the inner valve core 22 are in the initial sealing position, the first sealing ring 50 fits the inner wall of the valve body 10 and is located on the right side of the inflation port 12. The first sealing ring 50 can form a first sealed cavity 51 between the inner wall of the valve body 10. The area of ​​the first sealed cavity 51 can cover the inflation port 12. At this time, the gas in the wheel cannot be discharged from the first sealed cavity 51 from the inflation port 12, and the external gas cannot pass through the first sealed cavity 51 to enter the inflation port 12, thereby ensuring the sealing effect at the inflation port 12. At the same time, the second sealing ring 60 fits the inner wall of the valve body 10 and is located on the right side of the exhaust port 13. A second sealed cavity 61 can be formed between the first sealing ring 50, the second sealing ring 60, the inner wall of the valve body 10 and the one-way exhaust valve 40. The area of ​​the second sealed cavity 61 can cover the position of the exhaust port 13. At this time, not only can the one-way exhaust valve 40 play a role in sealing the exhaust port 13, but the second sealed cavity 61 can also play a sealing role. The gas outside the second sealed cavity 61 cannot enter the second sealed cavity 61 to be discharged from the exhaust port 13.

[0045] See also Figure 2 and Figure 3Specifically, when the outer valve core 21 and the inner valve core 22 move to the exhaust position, the first sealing ring 50 is located relative to the inflation port 12, and the second sealing ring 60 is located relative to the exhaust port 13. At this time, the first sealing ring 50 and the second sealing ring 60 no longer fit the inner wall of the valve body 10, and a gap is generated between the first sealing ring 50 and the second sealing ring 60 and the inner wall of the valve body 10. The gas in the wheel enters the outer air hole 23 on one side of the outer valve core 21 from the inflation port 12, and is discharged to the exhaust port 13 from the outer air hole 23 on the other side of the outer valve core 21 for exhaust. When the outer valve core 21 and the inner valve core 22 move to the inflation position, the first sealing ring 50 is located on the left side of the inflation port 12, and the second sealing ring 60 is located on the left side of the exhaust port 13. At this time, the first sealing ring 50 and the second sealing ring 60 fit the inner wall of the valve body 10, and a third sealed cavity 63 is formed between the first sealing ring 50, the second sealing ring 60 and the inner wall of the valve body 10. The gas introduced into the intake pipe passes through the air inlet 11, the inner air hole 24 and the outer air hole 23 in turn, and finally enters the third sealed cavity 63 and is filled into the inflation port 12. In addition, the third sealed cavity 63 can block the injected gas from being discharged to the exhaust port 13, thereby playing a good sealing role.

[0046] The present invention also provides a tire inflation and deflation system, which may include the above-mentioned wheel-side valve. When the wheel-side valve is used for exhaust, the exhaust passage does not need to pass through the air inlet 11, and the gas in the wheel is directly discharged from the inflation port 12 to the exhaust port 13 through the valve core 20, thereby avoiding the influence of the input air pressure of the air inlet pipeline on the exhaust efficiency and shortening the exhaust path, thereby significantly improving the exhaust efficiency of the wheel-side valve. At the same time, the inner and outer nested valve core structure of the wheel-side valve can reduce the size and weight of the wheel-side valve. Therefore, the exhaust efficiency of the inflation and deflation system using the wheel-side valve can also be significantly improved.

[0047] The present invention also provides a vehicle, which may include the above tire inflation and deflation system to improve the exhaust efficiency of the vehicle's inflation and deflation system.

[0048] In summary, the wheel side valve, tire inflation and deflation system and vehicle provided by the present invention can improve the exhaust efficiency of the wheel side valve and reduce the size and weight of the wheel side valve.

[0049] In the description of this specification, the description with reference to the terms "this embodiment", "example", "specific example", etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner.

[0050] The embodiments of the present invention disclosed above are only used to help illustrate the present invention. The embodiments do not describe all the details in detail, nor do they limit the invention to the specific implementation methods described. Obviously, many modifications and changes can be made according to the content of this specification. This specification selects and specifically describes these embodiments in order to better explain the principles and practical applications of the present invention, so that those skilled in the art can understand and use the present invention well. The present invention is limited only by the claims and their full scope and equivalents.

Claims

1. A wheel-side valve, characterized in that: include: A valve body, arranged on the wheel; A valve core is disposed in the valve body and cooperates with the valve body to form a sealing structure; An air inlet, a charging port and an exhaust port are arranged on the valve body, the air inlet is connected to the air inlet pipeline of the wheel, and the gas in the air inlet pipeline pushes the valve core to move in the valve body; Among them, when the valve core moves to the exhaust position, the inflation port, the valve core and the exhaust port are connected in sequence to form the exhaust channel of the wheel, and when the valve core moves to the inflation position, the air inlet, the valve core and the inflation port are connected in sequence to form the inflation channel of the wheel.

2. The wheel-side valve according to claim 1, characterized in that: Also includes: A first channel is formed at the exhaust position of the valve core, and the charging port, the first channel and the exhaust port are sequentially connected; as well as A second channel is formed at the inflation position of the valve core, and the air inlet, the second channel and the inflation port are sequentially connected.

3. The wheel-side valve according to claim 2, characterized in that: The valve core comprises: An outer valve core is slidably disposed in the valve body; An inner valve core is slidably disposed in the outer valve core; an outer air hole, which is disposed on the outer valve core, and when the valve core moves to the exhaust position, the inflation port, the outer air hole and the exhaust port are sequentially connected to form the first channel; and The inner air hole is arranged on the inner valve core, and when the valve core moves to the inflation position, the air inlet, the inner air hole, the outer air hole and the inflation port are connected in sequence to form the second channel.

4. The wheel-side valve according to claim 3, characterized in that: The valve core also includes: A communication hole is provided at one end of the outer valve core opposite to the air inlet; Among them, when the gas pressure in the intake pipe is a first pressure value, the gas pushes the outer valve core to slide in the valve body, and when the gas pressure in the intake pipe is a second pressure value, the gas pushes the outer valve core to slide in the valve body, and pushes the inner valve core to slide in the outer valve core through the connecting hole, and the second pressure value is greater than the first pressure value.

5. The wheel-side valve according to claim 3, characterized in that: The wheel-side valve also includes a reset assembly connected between the valve body and the valve core, and the reset assembly includes: An outer spring, which is sleeved on the surface of the outer valve core, and one end of which is connected to the outer wall of the outer valve core, and the other end of which is connected to the inner wall of the valve body; and An inner spring has one end connected to the inner wall of the valve body and the other end extending into the interior of the outer valve core and connected to the end of the inner valve core.

6. The wheel-side valve according to claim 3, characterized in that: The valve core also includes a first sealing ring, which is arranged on the surface of the outer valve core close to the inflation port, and a first sealed cavity is formed between the first sealing ring and the inner wall of the valve body, and the inflation port is located in the first sealed cavity area.

7. The wheel-side valve according to claim 1, characterized in that: The wheel side valve also includes a one-way exhaust valve, which is arranged on the exhaust port.

8. The wheel-side valve according to claim 7, characterized in that: The valve core also includes a second sealing ring, which is arranged on the surface of the outer valve core close to the exhaust port, and a second sealed cavity is formed between the first sealing ring, the second sealing ring, the inner wall of the valve body and the one-way exhaust valve, and the exhaust port is located in the second sealed cavity area.

9. A tire inflation and deflation system, characterized in that: It comprises a wheel-side valve as described in any one of claims 1-8.

10. A vehicle, characterized in that: Comprising the tire inflation and deflation system as claimed in claim 9.

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