Wheel edge air valve, central inflation and deflation system and vehicle

Abstract

The utility model relates to a wheel edge air valve, a central inflation and deflation system and a vehicle. The technical problems that when the wheel edge air valve is arranged on the inner side of a rim, back pressure is prone to change, and working reliability is poor are solved. The wheel edge air valve comprises a body arranged on the outer side of a rim, the body comprises an inner cavity and a first air hole and a second air hole which can be communicated through fluid in the inner cavity, the second air hole can be communicated with the atmosphere or an air source, and the plug part is arranged on the body, can stretch into the inner side of the rim and is connected with the rim in a sealed mode. A tire air hole in fluid communication with the first air hole is formed in the part, extending into the inner side of the rim, of the plug part, and the valve element is arranged in the inner cavity and is provided with a communicating position for communicating fluid communication between the first air hole and the second air hole and a cutting-off position for cutting off fluid communication between the first air hole and the second air hole.

Description

Technical Field

[0001] The present disclosure relates to the technical field of tire inflation and deflation, and in particular to a wheel-side air valve, a central inflation and deflation system and a vehicle. Background Art

[0002] At present, the wheel side air valve used in the central inflation and deflation system is usually arranged on the inner side of the wheel rim to avoid failure of the inflation and deflation system caused by scratches and mis-tightening of the wheel side air valve.

[0003] However, the back cavity of the air valve installed on the inside of the rim needs to be sealed. If it is placed in the high-pressure environment of the tire for a long time, the back pressure will change, which will greatly affect the opening and closing air pressure, resulting in poor working reliability of the wheel-side air valve and unstable system performance. Utility Model Content

[0004] The purpose of the present invention is to provide a wheel-side air valve, a central air filling and deflation system and a vehicle, so as to solve the technical problems that the back pressure is easy to change and the working reliability is poor when the wheel-side air valve is arranged on the inner side of the rim.

[0005] In order to achieve the above-mentioned purpose, the present disclosure provides a wheel-side air valve, comprising: a main body, which is arranged on the outer side of the rim, the main body comprising an inner cavity, a first air hole and a second air hole, the first air hole and the second air hole can be connected through the inner cavity fluid, and the second air hole can be connected to the atmosphere or an air source; a plug part, which is arranged on the main body, the plug part can extend into the inner side of the rim and be sealed with the rim, a tire air hole connected to the fluid of the first air hole is arranged on the part of the plug part extending into the inner side of the rim; and a valve core, which is arranged in the inner cavity and has a conduction position for conducting fluid communication between the first air hole and the second air hole and a cut-off position for cutting off fluid communication between the first air hole and the second air hole.

[0006] Optionally, the valve core includes a piston and an elastic member accommodated in the inner cavity, the outer peripheral surface of the piston is sealingly connected to the inner cavity, the piston can move in the inner cavity to reach the conduction position and the cut-off position, and the elastic member can provide elastic force for the piston to maintain the cut-off position.

[0007] Optionally, the elastic member can provide elastic force for the piston to seal the first air hole, and the valve core is configured as follows: in the cut-off position, the top end surface of the piston seals the first air hole; in the conduction position, the top end surface of the piston is away from the first air hole to open the first air hole.

[0008] Optionally, the end of the first air hole is formed into a pointed structure.

[0009] Optionally, a rubber pad is provided on the top end surface at a position for sealing the pointed mouth structure.

[0010] Optionally, an air chamber is formed between the top end surface and the inner cavity, and the second air hole is fluidically connected to the air chamber to provide gas pressure for the piston to move in a direction away from the first air hole.

[0011] Optionally, the main body is further provided with an assembly opening for placing the valve core into the inner cavity, a stop block is detachably connected to the assembly opening, and the elastic member abuts between the stop block and the piston.

[0012] Optionally, a clamping spring is clamped at the assembly opening, and the clamping spring stops at a side of the stop block facing the assembly opening.

[0013] Optionally, a shaft shoulder is formed between the main body and the plug portion, and a combined gasket capable of sealingly connecting with the rim is sleeved on the plug portion, and the combined gasket is supported on the shaft shoulder.

[0014] Optionally, a locking nut is threadedly connected to the portion of the plug portion extending into the inner side of the rim, so as to lock the rim between the combined gasket and the locking nut.

[0015] Optionally, the plug portion is formed integrally with the body.

[0016] On the basis of the above technical solution, the present disclosure also provides a central inflation and deflation system, comprising: a rim, a tire, a wheel rim mounted on the wheel rim, and the wheel-side air valve in the above technical solution, wherein the plug portion extends into the inner side of the wheel rim so that the tire air hole is connected to the internal fluid of the tire.

[0017] Optionally, the central inflation and deflation system also includes: a pressure sensor, arranged inside the tire, to monitor the tire pressure of the tire in real time, and a central monitoring control module, which is communicated with the pressure sensor to control the valve core to switch to the cut-off position or the conduction position according to the tire pressure measured by the pressure sensor.

[0018] On the basis of the above technical solution, the present disclosure also provides a vehicle, including the central inflation and deflation system in the above technical solution.

[0019] Through the above technical solution, the body of the wheel-side air valve provided by the present disclosure is arranged on the outside of the rim, and the valve core in the inner cavity of the body is also arranged on the outside of the rim. Therefore, in the wheel-side air valve provided by the present disclosure, it is only necessary to keep the valve core in the cut-off position to ensure the air tightness of the tire, and there is no need to seal the back cavity of the valve core. This can avoid the situation where the back cavity pressure is prone to change when the body, the inner cavity and the valve core are all arranged on the inside of the rim, resulting in poor working reliability of the wheel-side air valve. When the tire needs to be inflated or deflated, by switching the valve core to the conduction position, the inside of the tire can be connected to the air source or the atmosphere through the tire air hole, the first air hole, and the second air hole in sequence for inflation or deflation. The central inflation and deflation system provided by the present disclosure has the same technical effect as the wheel-side air valve in the above technical solution. In order to avoid unnecessary repetition, it will not be repeated here. The vehicle provided by the present disclosure has the same technical effect as the central inflation and deflation system in the above technical solution. In order to avoid unnecessary repetition, it will not be repeated here.

[0020] Other features and advantages of the present disclosure will be described in detail in the following detailed description. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] The accompanying drawings are used to provide a further understanding of the present disclosure and constitute a part of the specification. Together with the following specific embodiments, they are used to explain the present disclosure but do not constitute a limitation of the present disclosure. In the accompanying drawings:

[0022] Figure 1 is a schematic diagram of the structure of the wheel side air valve in a specific embodiment of the present disclosure;

[0023] Figure 2 yes Figure 1 Exploded diagram of

[0024] Figure 3 yes Figure 1 A cross-sectional view of the valve core, wherein the valve core is in the cut-off position.

[0025] Description of Reference Numerals

[0026] 1-body, 10-inner cavity, 11-first air hole, 12-second air hole, 13-air chamber, 14-assembly opening, 141-slot, 15-stop block, 16-circlip, 17-shaft shoulder,

[0027] 2-plug part, 21-tire air hole,

[0028] 3-valve core, 31-piston, 310-top surface, 311-rubber pad, 312-O-ring, 32-elastic part,

[0029] 4-Combination gasket,

[0030] 5- Lock nut. DETAILED DESCRIPTION

[0031] The specific implementation of the present disclosure is described in detail below in conjunction with the accompanying drawings. It should be understood that the specific implementation described herein is only used to illustrate and explain the present disclosure, and is not used to limit the present disclosure.

[0032] In the present disclosure, unless otherwise stated, directional words such as "inside" and "outside" generally refer to the inside and outside relative to the contour of the corresponding component itself. The terms "first" and "second" used in the present disclosure are to distinguish one element from another element and do not have order and importance. In addition, when the following description refers to the drawings, unless otherwise indicated, the same numbers in different drawings represent the same or similar elements.

[0033] According to a specific embodiment of the present disclosure, a wheel side air valve is provided, referring to Figures 1 to 3 As shown, the wheel-side air valve may include a main body 1 , a plug portion 2 and a valve core 3 .

[0034] The body 1 is arranged on the outside of the rim, and the body 1 may include an inner cavity 10, a first air hole 11 and a second air hole 12. The first air hole 11 and the second air hole 12 can be fluidically connected through the inner cavity 10, and the second air hole 12 can be connected to the atmosphere and the air source in a switchable manner. It should be noted that since the tire is mounted on the outer periphery of the rim, the inner side of the rim in this application refers to the side of the rim that contacts the tire (i.e., the outer periphery of the rim), and the outer side of the rim refers to the side of the rim that is away from the tire (i.e., the inner periphery of the rim).

[0035] The plug part 2 can be arranged on the main body 1, and the plug part 2 can be extended into the inner side of the rim and sealed with the rim. The part of the plug part 2 extending into the inner side of the rim can be provided with a tire air hole 21 which is fluidically connected with the first air hole 11. When a tire is installed on the rim, the plug part 2 can enter the interior of the tire so that the first air hole 11 can be fluidly connected with the interior of the tire through the tire air hole 21.

[0036] The valve core 3 may be disposed in the inner cavity 10 , and may have a conducting position for conducting fluid communication between the first air hole 11 and the second air hole 12 , and a cutting-off position for cutting off fluid communication between the first air hole 11 and the second air hole 12 .

[0037] In the specific embodiment of the present disclosure, the wheel side air valve is a normally closed valve, that is, the initial position of the valve core 3 is the cut-off position, and when the valve core 3 is not subjected to external force, the valve core 3 can be kept in the cut-off position so that the tire can maintain air tightness. When the tire needs to be inflated or deflated, the valve core 3 can be switched to the on position so that the first air hole 11 and the second air hole 12 are connected through the inner cavity 10, so that the inside of the tire can be connected to the air source or the atmosphere through the second air hole 12.

[0038] Through the above technical scheme, the body 1 of the wheel-side air valve provided by the present invention is arranged on the outside of the rim, and the valve core 3 in the inner cavity 10 of the body 1 is also arranged on the outside of the rim. Therefore, in the wheel-side air valve provided by the present invention, it is only necessary to keep the valve core 3 in the cut-off position to ensure the air tightness of the tire without sealing the back cavity of the valve core 3. In this way, it is possible to avoid the poor working reliability of the wheel-side air valve caused by the easy change of the back cavity pressure when the body 1, the inner cavity 10 and the valve core 3 are all arranged on the inside of the rim. When the tire needs to be inflated or deflated, by switching the valve core 3 to the conduction position, the inside of the tire can be connected to the air source or the atmosphere through the tire air hole 21, the first air hole 11, and the second air hole 12 in sequence for inflation or deflation.

[0039] refer to Figures 1 to 3 As shown, the valve core 3 may include a piston 31 and an elastic member 32 contained in the inner cavity 10. The outer peripheral surface of the piston 31 is sealed and connected to the inner cavity 10. The piston 31 can move in the inner cavity 10 to reach the conduction position and the cut-off position. The elastic member 32 can provide the piston 31 with elastic force to maintain the cut-off position, so that the tire can maintain air tightness. That is, under the elastic force of the elastic member 32, the piston 31 can maintain the cut-off of the fluid communication between the first air hole 11 and the second air hole 12. When the tire needs to be inflated or deflated, the piston 31 can be moved to the conduction position, so that the first air hole 11 and the second air hole 12 are connected through the inner cavity 10, so that the inside of the tire can be connected to the air source or the atmosphere through the second air hole 12.

[0040] In a specific embodiment of the present disclosure, reference Figure 3 As shown, the piston 31 can seal the first air hole 11 in the cut-off position, thereby cutting off the communication between the first air hole 11 and the second air hole 12. That is, the piston 31 can move in the inner cavity 10 to approach or move away from the first air hole 11, and the elastic member 32 can provide the piston 31 with elastic force to move toward the first air hole 11 and seal the first air hole 11, and the valve core 3 can be configured as follows: in the cut-off position, the top end surface 310 of the piston 31 can seal the first air hole 11; in the conducting position, the top end surface 310 of the piston 31 can move away from the first air hole 11 to open the first air hole 11.

[0041] In order to facilitate the sealing of the first air hole 11 by the top surface 310, refer to Figure 3 As shown, the end of the first air hole 11 may be formed into a pointed structure, and the pointed structure may protrude toward the inner cavity 10 .

[0042] Correspondingly, a rubber pad 311 may be provided at the position on the top end surface 310 for sealing the pointed nozzle structure. When the pointed nozzle structure is pressed against the rubber pad 311, the rubber pad 311 can be flexibly deformed, thereby improving the sealing reliability of the pointed nozzle structure.

[0043] In order to make the outer peripheral surface of the piston 31 and the inner cavity 10 sealed, refer to Figure 2 and Figure 3 As shown, an O-ring 312 may be sleeved on the outer circumferential surface of the piston 31 .

[0044] In order to enable the piston 31 to overcome the elastic force of the elastic member 32 and move from the cut-off position to the conduction position, refer to Figure 3 As shown, an air chamber 13 is formed between the top end surface 310 and the inner cavity 10 , and the second air hole 12 is fluidically connected to the air chamber 13 to provide gas pressure for the piston 31 to move in a direction away from the first air hole 11 to open the first air hole 11 .

[0045] When the tire needs to be inflated or deflated, the second air hole 12 can be controlled to be connected to the air source, and the air source inputs gas into the air chamber 13 through the second air hole 12. The gas pressure in the air chamber 13 can act on the top end surface 310. When the gas pressure acting on the top end surface 310 is greater than the elastic force of the elastic member 32, the piston 31 can move away from the first air hole 11 under the action of the gas pressure, so that the interior of the tire can be connected to the fluid of the air chamber 13 through the tire air hole 21 and the first air hole 11.

[0046] When the tire needs to be inflated, the air source is controlled to continuously input air into the air chamber 13 through the second air hole 12, and the air can enter the tire through the first air hole 11 and the tire air hole 21. When the tire pressure rises to the required tire pressure value, the air source is controlled to stop inputting air into the air chamber 13, and the second air hole 12 is controlled to be connected to the atmospheric fluid through the quick release solenoid valve described below, so that the gas in the air chamber 13 is quickly discharged, and the air pressure in the air chamber 13 is instantly restored to atmospheric pressure. The piston 31 moves quickly toward the first air hole 11 under the elastic force of the elastic member 32 and seals the first air hole 11, so that the tire pressure can be maintained at the required tire pressure value.

[0047] When the tire needs to be deflated, the air source is controlled to stop inputting air into the air chamber 13, and the second air hole 12 is controlled to be connected to the atmospheric fluid through the slow release solenoid valve described below, so that the gas in the air chamber 13 is slowly discharged, and the air pressure in the air chamber 13 is slowly reduced. As the air pressure in the air chamber 13 decreases, the piston 31 slowly moves toward the first air hole 11. During this process, the gas inside the tire is also slowly released into the atmosphere through the air chamber 13. When the tire pressure is reduced to the required tire pressure value, the second air hole 12 is controlled to be connected to the atmospheric fluid through the quick release solenoid valve described below, so that the gas in the air chamber 13 is quickly discharged, and the air pressure in the air chamber 13 is instantly restored to the atmospheric pressure. The piston 31 moves quickly toward the first air hole 11 under the elastic force of the elastic member 32 and seals the first air hole 11, so that the tire pressure can be maintained at the required tire pressure value.

[0048] refer to Figures 1 to 3 As shown, the main body 1 can be constructed as a hollow cylindrical structure, the first air hole 11 can be arranged on one end face of the cylindrical structure, the plug part 2 can also be arranged on the end face where the first air hole 11 is located, the plug part 2 can be formed integrally with the main body 1, and the second air hole 12 can be arranged on the side of the cylindrical structure. The main body 1 constructed as a cylindrical structure has a compact structure, occupies a small space, and can be directly fixed on the rim through the plug part 2.

[0049] In order to facilitate the assembly of the valve core 3 and the body 1, refer to Figures 1 to 3 As shown, the body 1 may also be provided with an assembly opening 14 for the valve core 3 to be placed in the inner cavity 10, and a stop block 15 may be detachably connected to the assembly opening 14, and the elastic member 32 may abut between the stop block 15 and the piston 31. During the assembly process, the piston 31 and the elastic member 32 may be placed in the inner cavity 10 in sequence, and then the stop block 15 may be fixedly connected to the assembly opening 14.

[0050] In order to achieve a fixed connection between the stop block 15 and the assembly opening 14, refer to Figures 1 to 3 As shown, an annular groove 141 may be provided on the inner wall of the assembly opening 14, and a spring 16 may be clamped in the groove 141. After the stop block 15 is placed in the assembly opening 14, the spring 16 may be compressed to place the spring 16 in the groove 141, and then the spring 16 may be pressed against the groove 141 under its own elastic force to stop the stop block 15 on the side facing the assembly opening 14, thereby stopping the stop block 15 in the assembly opening 14 to prevent the stop block 15 from falling out.

[0051] In order to fix the plug part 2 to the rim, refer to Figure 2 and Figure 3As shown, a shaft shoulder 17 may be formed between the body 1 and the plug part 2, a combined gasket 4 that can be sealed and connected to the rim may be sleeved on the plug part 2, and the combined gasket 4 may be supported on the shaft shoulder 17. A locking nut 5 may be threadedly connected to the portion of the plug part 2 that extends into the inner side of the rim, so as to lock the rim between the combined gasket 4 and the locking nut 5. During the assembly process, the locking nut 5 may be first removed from the plug part 2, then the plug part 2 is inserted into the inner side of the rim, and the locking nut 5 is sleeved on the plug part 2, and finally, the locking nut 5 is rotated so that the locking nut 5 moves toward the combined gasket 4, so as to tighten the rim between the combined gasket 4 and the locking nut 5.

[0052] On the basis of the above technical solution, the present disclosure also provides a central inflation and deflation system, including a rim, a tire mounted on the rim, and the wheel-side air valve in the above technical solution, wherein the plug part 2 can extend into the inner side of the rim so that the tire air hole 21 is connected to the internal fluid of the tire.

[0053] Through the above technical solution, the central inflation and deflation system provided by the present invention has the same technical effect as the wheel-side air valve in the above technical solution. In order to avoid unnecessary repetition, it will not be described here.

[0054] In addition, the central inflation and deflation system may also include a pressure sensor and a central monitoring and control module. The pressure sensor may be arranged inside the tire to monitor the tire pressure in real time. The central monitoring and control module may be communicated with the pressure sensor to control the valve core 3 to switch to a cut-off position or a conduction position according to the tire pressure measured by the pressure sensor.

[0055] When the tire pressure measured by the pressure sensor monitored by the central monitoring control module is lower than the preset tire pressure, the central monitoring control module issues a work command to open the air intake solenoid valve to connect the second air hole 12 with the air source, so that the air pressure in the air chamber 13 increases, so that the piston 31 moves to the conduction position to open the first air hole 11. The air source continues to inflate the tire through the first air hole 11. When the tire pressure measured by the pressure sensor monitored by the central monitoring control module reaches the preset tire pressure, the central monitoring control module sends a work command to close the air source and the air intake solenoid valve, and at the same time open the quick release solenoid valve between the second air hole 12 and the atmosphere, so that the air pressure in the air chamber 13 is instantly restored to the atmospheric pressure, so that the piston 31 quickly moves to the cut-off position to seal the first air hole 11.

[0056] When the tire pressure measured by the pressure sensor monitored by the central monitoring control module is higher than the preset tire pressure, the central monitoring control module issues a work command to open the air intake solenoid valve to connect the second air hole 12 with the air source, so that the air pressure in the air chamber 13 increases, thereby causing the piston 31 to move to the conduction position to open the first air hole 11. The air source inflates the tire through the first air hole 11, and the central monitoring control module monitors the increase in tire pressure measured by the pressure sensor, and sends a work command to close the air source and the air intake solenoid valve, and at the same time opens the slow release solenoid valve between the second air hole 12 and the atmosphere, so that the air pressure in the air chamber 13 slowly decreases, and the piston 31 slowly moves to the cut-off position. During this process, the first air hole 11 and the second air hole 12 remain connected, and the gas in the tire is released to the atmosphere through the air chamber 13 and the second air hole 12. When the tire pressure measured by the pressure sensor monitored by the central monitoring and control module drops to the preset tire pressure, the central monitoring and control module issues a work command to open the quick release solenoid valve between the second air hole 12 and the atmosphere, so that the air pressure in the air chamber 13 is instantly restored to the atmospheric pressure, thereby causing the piston 31 to move quickly to the cut-off position to seal the first air hole 11.

[0057] On the basis of the above technical solution, the present disclosure also provides a vehicle, including the central inflation and deflation system in the above technical solution.

[0058] Through the above technical solution, the vehicle provided by the present invention has the same technical effect as the central inflation and deflation system in the above technical solution. In order to avoid unnecessary repetition, it will not be described here.

[0059] The preferred embodiments of the present disclosure are described in detail above in conjunction with the accompanying drawings; however, the present disclosure is not limited to the specific details in the above embodiments. Within the technical concept of the present disclosure, a variety of simple modifications can be made to the technical solution of the present disclosure, and these simple modifications all fall within the protection scope of the present disclosure.

[0060] It should also be noted that the various specific technical features described in the above specific embodiments can be combined in any suitable manner without contradiction. In order to avoid unnecessary repetition, the present disclosure will not further describe various possible combinations.

[0061] In addition, various embodiments of the present disclosure may be arbitrarily combined, and as long as they do not violate the concept of the present disclosure, they should also be regarded as the contents disclosed by the present disclosure.

Claims

1. A wheel side air valve, characterized in that: include: The body is arranged on the outer side of the rim, and the body includes an inner cavity, a first air hole and a second air hole, wherein the first air hole and the second air hole can be connected through the inner cavity fluid, and the second air hole can be connected to the atmosphere or an air source, a plug portion, arranged on the body, the plug portion being capable of extending into the inner side of the rim and being sealed and connected to the rim, a tire air hole being arranged on a portion of the plug portion extending into the inner side of the rim and being in fluid communication with the first air hole, and The valve core is arranged in the inner cavity and has a conducting position for conducting fluid communication between the first air hole and the second air hole and a cutting-off position for cutting off the fluid communication between the first air hole and the second air hole.

2. The wheel side air valve according to claim 1, characterized in that: The valve core includes a piston and an elastic member accommodated in the inner cavity. The outer peripheral surface of the piston is sealed with the inner cavity. The piston can move in the inner cavity to reach the conduction position and the cut-off position. The elastic member can provide elastic force for the piston to remain in the cut-off position.

3. The wheel side air valve according to claim 2, characterized in that: The elastic member can provide elastic force for the piston to seal the first air hole. The valve core is configured such that, in the cut-off position, the top end surface of the piston seals the first air hole; In the conducting position, the top end surface of the piston is away from the first air hole to open the first air hole.

4. The wheel side air valve according to claim 3, characterized in that: The end of the first air hole is formed into a pointed mouth structure.

5. The wheel side air valve according to claim 4, characterized in that: A rubber pad is provided on the top end surface at a position for sealing the pointed mouth structure.

6. The wheel side air valve according to claim 3, characterized in that: An air chamber is formed between the top surface and the inner cavity. The second gas hole is in fluid communication with the gas chamber for providing gas pressure for the piston to move in a direction away from the first gas hole.

7. The wheel side air valve according to claim 2, characterized in that: The main body is also provided with an assembly opening for allowing the valve core to be placed in the inner cavity. A stop block is detachably connected to the assembly opening, and the elastic member abuts between the stop block and the piston.

8. The wheel side air valve according to claim 7, characterized in that: A clamping spring is clamped at the assembly opening, and the clamping spring stops at a side of the stop block facing the assembly opening.

9. The wheel side air valve according to claim 1, characterized in that: A shaft shoulder is formed between the body and the plug portion, and a combined gasket capable of being sealed and connected to the rim is sleeved on the plug portion, and the combined gasket is supported on the shaft shoulder.

10. The wheel side air valve according to claim 9, characterized in that: A locking nut is threadedly connected to the portion of the plug portion extending into the inner side of the rim so as to lock the rim between the combined gasket and the locking nut.

11. The wheel side air valve according to claim 1, characterized in that: The plug portion is integrally formed with the body.

12. A central inflation and deflation system, characterized in that: include: Rim, A tire is mounted on the rim, and The wheel-side air valve according to any one of claims 1 to 11, wherein the plug portion extends into the inner side of the wheel rim so that the tire air hole is in communication with the internal fluid of the tire.

13. The central inflation and deflation system according to claim 12, characterized in that: The central inflation and deflation system also includes: A pressure sensor is disposed inside the tire to monitor the tire pressure in real time, and The central monitoring control module is connected to the pressure sensor for controlling the valve core to switch to the cut-off position or the conduction position according to the tire pressure measured by the pressure sensor.

14. A vehicle, characterized in that: Includes the central inflation and deflation system as described in claim 12 or 13.

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