Inflation and deflation switch valve, inflation and deflation system and vehicle

Abstract

The utility model discloses an inflation and deflation switch valve, an inflation and deflation system and a vehicle, the inflation and deflation switch valve comprises a valve body assembly, and a first locking part is formed on the valve body assembly; an inflation and deflation channel is formed between the piston assembly and the valve body assembly; the elastic locking assembly abuts against the side, away from the inflation and deflation channel, of the piston assembly. The elastic locking assembly has a locking state and an unlocking state, when the elastic locking assembly is in the locking state, the elastic locking assembly is matched with the first locking part in a locking mode, the piston assembly opens the inflation and deflation channel, and when the elastic locking assembly is in the unlocking state, the elastic locking assembly and the first locking part are unlocked. The elastic locking assembly and the piston assembly provide elastic force for the piston assembly so that the piston assembly can close the inflation and deflation channel. Therefore, by arranging the inflation and deflation switch valve, stable and automatic inflation and deflation actions can be realized only in one bidirectional inflation and deflation channel until the set air pressure is reached, so that the inflation and deflation stability and accuracy are improved.

Description

Technical Field

[0001] The utility model relates to the technical field of vehicles, in particular to a charging and discharging switch valve, a charging and discharging system and a vehicle. Background Art

[0002] In the related art, the safety valve of the wheel is arranged inside the rim, which can prevent being scratched and mis-twisted, improve safety, and avoid the failure of the charging and discharging system caused by the mis-twisting of the safety valve assembly; at the same time, the tightness of the spring is more precisely controlled by the set screw, which is convenient for calculating the inflation pressure, improves the adjustability of the safety valve assembly, and has higher precision. However, this form of the charging and discharging safety valve structure has extremely high processing requirements, and the spring force is easily affected during deflation, resulting in the piston closing in advance and affecting the function of its two-way channel. From the overall demand trend of the tire automatic charging and discharging system, the hub of the passenger car has a kinematic relationship with the whole vehicle, and a corresponding rotating air chamber is required to convert the air path from static to dynamic. At this time, the difficulty lies in how to use the same pipeline to achieve stable charging and discharging functions in the system, and at the same time ensure the air tightness of the tire. Although there are solutions in the prior art that meet the working requirements of the two-way channel switch of the tire air control in the system, they are not suitable for application on passenger cars. Especially during deflation, the deflation action depends on the change of the spring force and is greatly affected by external factors. Summary of the Utility Model

[0003] The utility model aims to at least solve one of the technical problems existing in the prior art. For this reason, an object of the utility model is to provide a charging and discharging switch valve, which can realize stable automatic charging and discharging actions in only one two-way charging and discharging channel until the set air pressure, thereby improving the stability and accuracy of charging and discharging.

[0004] The utility model further provides a charging and discharging system.

[0005] The utility model further provides a vehicle.

[0006] According to the first aspect of the utility model, the charging and discharging switching valve includes: a valve body assembly, which is formed with a first locking portion; a piston assembly, which is movably arranged in the valve body assembly, and a charging and discharging channel is formed between the piston assembly and the valve body assembly; an elastic locking assembly, which is arranged in the valve body assembly, and the elastic locking assembly abuts against the side of the piston assembly away from the charging and discharging channel; the elastic locking assembly has a locking state and an unlocking state, when the elastic locking assembly is in the locking state, the elastic locking assembly is locked with the first locking portion, and the piston assembly opens the charging and discharging channel, when the elastic locking assembly is in the unlocking state, the elastic locking assembly is unlocked with the first locking portion, and the elastic locking assembly and the piston assembly provide elastic force to the piston assembly so that the piston assembly closes the charging and discharging channel.

[0007] Therefore, by setting the inflation and deflation switch valve, stable automatic inflation and deflation actions can be achieved in only one bidirectional inflation and deflation channel until the set air pressure is reached, thereby improving the inflation and deflation stability and accuracy.

[0008] In some examples of the present invention, the elastic locking assembly includes: a locking member, the locking member includes a second locking portion, when the elastic locking assembly is in the locking state, the first locking portion and the second locking portion are locked together; an elastic member, the elastic member abuts against a side of the locking member away from the inflation and deflation channel.

[0009] In some examples of the present invention, the first locking portion is formed with a locking groove, a first inclined surface and a second inclined surface, the locking groove is located between the first inclined surface and the second inclined surface, and the second locking portion enters the locking groove in a rotational manner through the first inclined surface and rotates away from the locking groove through the second inclined surface.

[0010] In some examples of the present invention, the second locking portion is formed with a third inclined surface for cooperating with the first inclined surface and the second inclined surface, and the piston assembly is formed with a fourth inclined surface for cooperating with the third inclined surface.

[0011] In some examples of the present invention, there are multiple first locking portions, and the multiple first locking portions are spaced apart in the circumferential direction of the valve body assembly; the locking member includes multiple second locking portions, and the multiple first locking portions correspond one-to-one to the multiple second locking portions.

[0012] In some examples of the present invention, a slide groove extending along the moving direction of the piston assembly is formed between two adjacent first locking portions, and a sliding block is formed on the outer periphery of the piston assembly, and the sliding block cooperates with the slide groove.

[0013] In some examples of the present utility model, the locking member further includes: a first support plate, the second locking portion is disposed on one side of the first support plate; a first limiting post, the first limiting post is disposed on the other side of the first support plate, and one end of the elastic member abuts against the other side of the first support plate and is sleeved on the first limiting post.

[0014] In some examples of the present utility model, the elastic locking assembly further includes: a support member, the support member includes: a second support plate, the second support plate abuts against the wall of the valve body assembly; a second limiting post, the second limiting post is disposed on the second support plate, and the other end of the elastic member abuts against the second support plate and is sleeved on the second limiting post.

[0015] In some examples of the present utility model, the air charging and discharging channel includes a first channel, an air chamber and a second channel; the valve body assembly includes: a valve body, the piston assembly is movably disposed in the valve body, and the first channel is formed in the valve body; a valve cover, the valve cover is connected to the valve body, and the elastic locking assembly is disposed in the valve cover; a deflation plug, the deflation plug is disposed in the valve body, and the second channel is formed in the deflation plug, and an air chamber is formed between the valve body, the deflation plug and the piston assembly, the air chamber is located between the first channel and the second channel, and the piston assembly is adapted to disconnect the second channel from the air chamber under the action of elastic force.

[0016] In some examples of the present utility model, the piston assembly includes: a piston; a seal member, the seal member is disposed on the piston, and when the elastic locking assembly is in the unlocked state, the seal member abuts against the deflation plug to disconnect the second channel from the air chamber.

[0017] In some examples of the present utility model, the piston assembly further includes: a plurality of first sealing rings, a plurality of sealing grooves are formed on the outer periphery of the piston at intervals along the axial direction of the piston, and the plurality of first sealing rings are respectively and correspondingly matched with the plurality of sealing grooves.

[0018] In some examples of the present utility model, the deflation plug is provided with a boss protruding towards the seal member.

[0019] In some examples of the present utility model, the valve body includes: a main body section, the valve cover and the inflation plug are respectively disposed at both ends of the main body section; a mounting section, the mounting section is connected to the outer periphery of the main body section and the central axis is perpendicular to the central axis of the main body section, and the first channel is formed in the mounting section.

[0020] The air charging and discharging system according to the second aspect of the present utility model includes: the above-mentioned air charging and discharging switch valve.

[0021] A vehicle according to the third aspect of the present utility model includes the above-mentioned air charging and discharging system.

[0022] Additional aspects and advantages of the present utility model will be given in part in the following description, become apparent in part from the following description, or be understood through the practice of the present utility model. Description of the Drawings

[0023] The above-mentioned and / or additional aspects and advantages of the present utility model will become apparent and be readily understood from the description of the embodiments in conjunction with the following drawings, wherein:

[0024] Figure 1 is a schematic structural diagram of an air charging and discharging switch valve according to an embodiment of the present utility model;

[0025] Figure 2 is an exploded view of an air charging and discharging switch valve according to an embodiment of the present utility model;

[0026] Figure 3 is a cross-sectional view (closed state) of an air charging and discharging switch valve according to an embodiment of the present utility model;

[0027] Figure 4 is another cross-sectional view (air charging state) of an air charging and discharging switch valve according to an embodiment of the present utility model;

[0028] Figure 5 is yet another cross-sectional view (air discharging state) of an air charging and discharging switch valve according to an embodiment of the present utility model;

[0029] Figure 6 is a schematic structural diagram of a locking member according to an embodiment of the present utility model;

[0030] Figure 7 is a schematic structural diagram of a piston according to an embodiment of the present utility model;

[0031] Figure 8 is a schematic structural diagram of a valve body according to an embodiment of the present utility model.

[0032] Reference Signs:

[0033] 100, air charging and discharging switch valve;

[0034] 1, valve body assembly; 11, first locking portion; 111, locking groove; 112, first inclined surface; 113, second inclined surface; 114, sliding groove; 12, valve body; 121, main body section; 122, installation section; 13, valve cover; 14, air discharging plug; 141, boss

[0035] 2. Piston assembly; 21. Gas charging and discharging channel; 211. First channel; 212. Air chamber; 213. Second channel; 22. Fourth inclined surface; 23. Slider; 24. Piston; 25. Sealing element; 26. First sealing ring;

[0036] 3. Elastic locking assembly; 31. Locking member; 311. Second locking portion; 312. Third inclined surface; 313. First support plate; 314. First limiting column; 32. Elastic member; 33. Support member; 34. Second support plate; 35. Second limiting column;

[0037] 4. Second sealing ring; 5. Gasket; 6. Locking nut. DETAILED DESCRIPTION

[0038] The embodiments of the present utility model are described in detail below. The embodiments described with reference to the accompanying drawings are exemplary. The embodiments of the present utility model are described in detail below.

[0039] Reference below Figures 1 - 8 The inflation and deflation switch valve 100 according to the embodiment of the utility model is described, which can realize stable automatic inflation and deflation action in only one bidirectional inflation and deflation channel 21 until the set air pressure is reached, thereby improving the inflation and deflation stability and accuracy.

[0040] Combination Figures 1 - 8 As shown, the inflation and deflation switch valve 100 according to the first embodiment of the utility model comprises a valve body assembly 1, a piston assembly 2 and an elastic locking assembly 3. The valve body assembly 1 can provide a flow channel for the fluid, the piston assembly 2 can reciprocate in the valve body assembly 1 to achieve the opening and closing effect of the fluid channel, and the elastic locking assembly 3 can stably lock the piston assembly 2 at a certain position.

[0041] Specifically, the valve body assembly 1 is formed with a first locking portion 11, the piston assembly 2 is movably arranged in the valve body assembly 1, and an air charging and discharging channel 21 is formed between the piston assembly 2 and the valve body assembly 1. The elastic locking assembly 3 is arranged in the valve body assembly 1, and the elastic locking assembly 3 abuts against the side of the piston assembly 2 away from the air charging and discharging channel 21; the elastic locking assembly 3 has a locked state and an unlocked state. When the elastic locking assembly 3 is in the locked state, the elastic locking assembly 3 is locked with the first locking portion 11, and the piston assembly 2 opens the air charging and discharging channel 21. When the elastic locking assembly 3 is in the unlocked state, the elastic locking assembly 3 is unlocked from the first locking portion 11, and the elastic locking assembly 3 and the piston assembly 2 provide elastic force to the piston assembly 2 so that the piston assembly 2 closes the air charging and discharging channel 21.

[0042] Specifically, the elastic locking assembly 3 and the piston assembly 2 are arranged in the valve body assembly 1. The valve body assembly 1 can install and protect the elastic locking assembly 3 and the piston assembly 2. An air charging and discharging channel 21 is formed between one end of the piston assembly 2 and the valve body assembly 1, which can achieve the effect of air flow exchanging between the inside and outside of the tire, and the elastic locking assembly 3 abuts against the side of the piston assembly 2 away from the air charging and discharging channel 21. The elastic locking piece 31 can undergo elastic deformation, so that an elastic reset force can be applied to the piston assembly 2.

[0043] Furthermore, when the elastic locking assembly 3 is in a locked state, the elastic locking assembly 3 is locked with the first locking portion 11 on the valve body assembly 1. At this time, the piston assembly 2 moves toward the side away from the charging and discharging channel 21 under the action of air pressure, and the charging and discharging channel 21 is in an open state; when the elastic locking assembly 3 is in an unlocked state, the elastic locking assembly 3 is unlocked with the first locking portion 11 on the valve body assembly 1. At this time, the elastic locking assembly 3 can provide the piston assembly 2 with an elastic reset force toward the side close to the charging and discharging channel 21. The piston assembly 2 moves toward the side of the charging and discharging channel 21 under the action of the elastic reset force, and the charging and discharging channel 21 is in a state of being closed by the piston assembly 2. In summary, the effect of automatic inflation and deflation can be achieved through the locking or unlocking relationship between the elastic locking member 31 and the first locking portion 11 on the valve body assembly 1, and the inflation and deflation action can also be stably maintained, thereby ensuring the reliability and stability of automatic inflation and deflation.

[0044] Therefore, by providing the inflation and deflation switch valve 100, stable automatic inflation and deflation actions can be achieved in only one bidirectional inflation and deflation channel 21 until the set air pressure is reached, thereby improving inflation and deflation stability and accuracy.

[0045] According to some optional embodiments of the present invention, combined with Figures 2 - 6 As shown, the elastic locking assembly 3 includes a locking member 31 and an elastic member 32. The locking member 31 includes a second locking portion 311. When the elastic locking assembly 3 is in a locked state, the first locking portion 11 is locked with the second locking portion 311, and the elastic member 32 abuts against the side of the locking member 31 that is away from the inflation and deflation channel 21.

[0046] Among them, the elastic member 32 can undergo elastic deformation to form an elastic restoring force on the locking member 31 toward the side of the piston assembly 2, and the second locking portion 311 on the locking member 31 can be locked with the first locking portion 11 on the inner wall of the valve body assembly 1. At this time, the locking force between the first locking portion 11 and the second locking portion 311 is equal to the elastic restoring force exerted by the elastic member 32 on the locking member 31, the locking member 31 is fixed, and the piston assembly 2 will move toward the side of the locking member 31 under the action of air pressure, so that the charging and discharging channel 21 can achieve the effect of automatic opening.

[0047] Specifically, in combination with Figures 2 - 6 and Figure 8 As shown, the first locking portion 11 is formed with a locking groove 111, a first inclined surface 112 and a second inclined surface 113. The locking groove 111 is located between the first inclined surface 112 and the second inclined surface 113. The second locking portion 311 enters the locking groove 111 in a rotating manner through the first inclined surface 112, and the second locking portion 311 moves away from the locking groove 111 in a rotating manner through the second inclined surface 113.

[0048] That is to say, a locking groove 111 is formed between the first inclined surface 112 and the second inclined surface 113. Due to the elastic restoring force of the elastic member 32 acting on the locking member 31, the second locking portion 311 on the locking member 31 will be guided by the first inclined surface 112 when contacting the first inclined surface 112, so as to achieve the effect of changing from linear motion to rotational motion. And until the second locking portion 311 rotates into the locking groove 111, at this time the second locking portion 311 is locked; when the second locking portion 311 is under the action of air pressure (at this time the gas pressure is greater than the acting force of the elastic member 32), after the second locking portion 311 moves beyond the position of the second inclined surface 113 towards the side of the elastic member 32, at this time the second locking portion 311 disengages from the locking groove 111, and rotates in a direction away from the locking groove 111 under the guiding action of the second inclined surface 113.

[0049] For example, when the tire is inflated, the high pressure causes the piston 24 to reach the limit position of the valve body 12 for stable inflation; when deflating, the locking member 31 is stuck into the locking groove 111. The air pressure during deflation is not enough to make the piston 24 reach the limit position of the valve body 12, but the piston 24 will not reset. In this way, the deflation work can be carried out stably until the air pressure in the tire drops to the set air pressure, thereby improving the stability of the automatic inflation and deflation work.

[0050] Furthermore, in combination with Figures 2 - 6 and Figure 8 As shown, the second locking portion 311 is formed with a third inclined surface 312 for cooperating with the first inclined surface 112 and the second inclined surface 113, and the piston assembly 2 is formed with a fourth inclined surface 22 for cooperating with the third inclined surface 312.

[0051] It can be understood that the third inclined surface 312 on the second locking portion 311 can be used to cooperate with the first inclined surface 112 and the second inclined surface 113 on the first locking portion 11, so as to convert the linear motion of the third inclined surface 312 relative to the first inclined surface 112 and the second inclined surface 113 into a rotational motion; the fourth inclined surface 22 on the piston assembly 2 can also be used to cooperate with the third inclined surface 312, which is conducive to the second locking portion 311 switching its cooperation state with the first inclined surface 112 or the second inclined surface 113 (for example, when the fourth inclined surface 22 on the piston assembly 2 pushes the third inclined surface 312 on the second locking portion 311 beyond the position of the first inclined surface 112, the fourth inclined surface 22 can guide the third inclined surface 312 to slide into the locking groove 111 along the first inclined surface 112; another example is that when the fourth inclined surface 22 on the piston assembly 2 pushes the third inclined surface 312 on the second locking portion 311 beyond the position of the second inclined surface 113, the fourth inclined surface 22 can guide the third inclined surface 312 to slide along the second inclined surface 113).

[0052] Specifically, as shown in combination with Figures 2 - 6 and Figure 8 , there are multiple first locking portions 11, and the multiple first locking portions 11 are arranged at intervals in the circumferential direction of the valve body assembly 1; the locking member 31 includes multiple second locking portions 311, and the multiple first locking portions 11 correspond to the multiple second locking portions 311 one by one.

[0053] That is to say, the multiple first locking portions 11 are arranged at intervals along the circumferential direction on the inner wall of the valve body assembly 1, and the multiple second locking portions 311 on the locking member 31 correspond to the multiple first locking portions 11 one by one, so that the second locking portions 311 on the locking member 31 can alternately be in a locked or unlocked state in the circumferential direction.

[0054] Furthermore, as shown in combination with Figures 2 - 6 and Figure 8 , a chute 114 extending in the moving direction of the piston assembly 2 is formed between two adjacent first locking portions 11, and a slider 23 is formed on the outer periphery of the piston assembly 2, and the slider 23 is matched with the chute 114.

[0055] It can be understood that the inner wall of the valve body assembly 1 is provided with chutes 114 at intervals along the circumferential direction, and the chutes 114 are located between two adjacent first locking portions 11. The slider 23 on the outer periphery of the piston assembly 2 can be slidably matched with the chutes 114, so that it is convenient for the piston assembly 2 to move along the chutes 114 toward the locking member 31 under the action of air pressure. The fourth inclined surface 22 on the piston assembly 2 can be pushed beyond the position of the first locking portion 11 after contacting the third inclined surface 312 on the locking member 31, so as to facilitate the locking member 31 and the first locking portion 11 to achieve the switching effect between the locked state and the unlocked state.

[0056] Specifically, as shown in combination withFigures 2 - 6 and Figure 8 As shown in Figure 8 , the locking member 31 further includes a first support plate 313 and a first limiting post 314. The second locking portion 311 is disposed on one side of the first support plate 313, and the first limiting post 314 is disposed on the other side of the first support plate 313. One end of the elastic member 32 abuts against the other side of the first support plate 313, and the elastic member 32 is sleeved on the first limiting post 314. Wherein, the locking member 31 realizes sliding rotation through the change of pressure, and can complete the switching effect of different states (such as closed state, inflation state and deflation state) of the inflation and deflation switch valve 100.

[0057] That is to say, the first support plate 313 can play a role in supporting the elastic member 32, and can also facilitate providing an installation and support position for the second locking portion 311. The elastic member 32 is sleeved on the first limiting post 314, so that the position stability of the elastic member 32 can be improved, the risk of radial crosstalk can be prevented, and the normal operation of the elastic member 32 can be ensured.

[0058] Furthermore, as shown in Figure 2 Figure 2 , the elastic locking assembly 3 further includes a support member 33. The support member 33 includes a second support plate 34 and a second limiting post 35. The second support plate 34 abuts against the wall of the valve body assembly 1, the second limiting post 35 is disposed on the second support plate 34, the other end of the elastic member 32 abuts against the second support plate 34, and the elastic member 32 is sleeved on the second limiting post 35.

[0059] It can be understood that the second support plate 34 can play a role in supporting the elastic member 32, and can also facilitate providing an installation and support position for the second locking portion 311. The elastic member 32 is sleeved on the second limiting post 35, so that the position stability of the elastic member 32 can be improved, the risk of radial crosstalk can be prevented, and the normal operation of the elastic member 32 can be ensured.

[0060] According to some alternative embodiments of the present invention, as shown in Figures 2 - 5As shown in the figure, the air charging and discharging channel 21 includes a first channel 211, an air chamber 212, and a second channel 213; the valve body assembly 1 includes a valve body 12, a valve cover 13, and a bleed plug 14. The piston assembly 2 is movably disposed within the valve body 12. The valve body 12 forms the first channel 211. The valve cover 13 is connected to the valve body 12. The elastic locking assembly 3 is disposed within the valve cover 13. The bleed plug 14 is disposed on the valve body 12. The bleed plug 14 forms the second channel 213. An air chamber 212 is formed between the valve body 12, the bleed plug 14, and the piston assembly 2. The air chamber 212 is located between the first channel 211 and the second channel 213. The piston assembly 2 is adapted to disconnect the second channel 213 from the air chamber 212 under the action of an elastic force. Among them, the valve body 12 and the bleed plug 14 are in interference fit, so as to ensure the connection strength between the valve body 12 and the bleed plug 14 and also ensure the sealing performance inside the valve body 12; the valve cover 13 can be threadedly connected to the valve body 12 to form a closed piston chamber.

[0061] Specifically, the valve body 12 and the bleed plug 14 respectively form the first channel 211 and the second channel 213. An air chamber 212 is defined between the valve body 12, the bleed plug 14, and the piston assembly 2. The sequential connection of the first channel 211, the air chamber 212, and the second channel 213 can be configured as a complete two-way air charging and discharging channel within the valve body 12.

[0062] Among them, when the locking member 31 is in the unlocked state, the locking member 31 will push the piston assembly 2 toward the bleed plug 14 side under the elastic force of the elastic member 32 until the piston assembly 2 blocks the position at the second channel 213. At this time, the gas flow channel between the second channel 213 and the air chamber 212 is closed, and gas cannot flow between the second channel 213 and the air chamber 212, thereby achieving the effect of closing the air charging and discharging switch valve 100 (that is, no air charging and discharging action is performed in this state).

[0063] Specifically, in combination with Figures 2 - 5 and Figure 7 as shown in the figure, the piston assembly 2 includes a piston 24 and a seal 25. The seal 25 is disposed on the piston 24. When the elastic locking assembly 3 is in the unlocked state, the seal 25 abuts against the bleed plug 14 to disconnect the second channel 213 from the air chamber 212.

[0064] That is to say, along the axial direction of the piston 24, the seal 25 and the elastic locking assembly 3 are respectively located at both ends of the piston 24. When the elastic locking assembly 3 is in the unlocked state (that is, the locking member 31 will push the piston 24 toward the bleed plug 14 side under the elastic force of the elastic member 32 until the seal 25 abuts against the position at the second channel 213), at this time, the communication between the second channel 213 and the air chamber 212 is closed, and gas cannot flow between the second channel 213 and the air chamber 212, thereby achieving the effect of closing the air charging and discharging switch valve 100.

[0065] Further, in combination with Figure 2 as shown, the piston assembly 2 further includes a plurality of first sealing rings 26. A plurality of sealing grooves spaced along the axial direction of the piston 24 are formed on the outer periphery of the piston 24, and the plurality of first sealing rings 26 are in one-to-one correspondence and cooperation with the plurality of sealing grooves.

[0066] It can be understood that along the axial direction of the piston 24, the plurality of first sealing rings 26 are respectively in one-to-one sealing cooperation with the plurality of sealing grooves on the outer periphery of the piston 24, so as to prevent the risk of gas leakage caused by the gap between the piston 24 and the inner wall of the valve body 12, thereby ensuring the gas tightness of the charging and discharging passage 21, and further maintaining the stability of the air pressure under normal working conditions.

[0067] Specifically, in combination with Figure 2 as shown, the air release plug 14 is provided with a convex platform 141 protruding towards the sealing member 25. Such an arrangement can reduce the additional consumption of materials and lower the manufacturing cost while meeting the requirements of its own length and structural strength. Among them, the width dimension of the convex platform 141 decreases on the side facing the piston assembly 2, which is also beneficial to pre-assembling the air release plug 14 into the valve body 12, thereby improving the convenience of installation and disassembly of the air release plug 14.

[0068] Further, in combination with Figure 8 as shown, the valve body 12 includes a main body section 121 and an installation section 122. The valve cover 13 and the air release plug 14 are respectively arranged at both ends of the main body section 121. The installation section 122 is connected to the outer periphery of the main body section 121, and the central axis of the installation section 122 is perpendicular to the central axis of the main body section 121. The installation section 122 forms a first passage 211.

[0069] It can be understood that along the axial direction of the piston 24, the valve cover 13 and the air release plug 14 are respectively arranged at both ends of the main body section 121. The valve cover 13 can play a role in protecting the internal structure and sealing, and the air release plug 14 is mainly used to provide a flow passage for the gas to communicate the inside and outside of the charging and discharging switch valve 100. Among them, the installation section 122 is connected to the outer periphery of the main body section 121. On the one hand, it can play a role in installing and fixing the charging and discharging switch valve 100, and on the other hand, it is also convenient to extend the effective length of the charging and discharging passage 21, thereby achieving the effect of connecting the gas source.

[0070] In addition, the central axis of the installation section 122 is perpendicular to the central axis of the main body section 121, which can facilitate the simplification of the gas flow path and the processing and manufacturing process, thereby improving the layout rationality.

[0071] Optionally, in combination with Figures 3 - 5As shown, a second sealing ring 4 is provided at one end of the outer periphery of the installation section 122 close to the main body section 121, and a gasket 5 and a lock nut 6 are provided at one end of the outer periphery of the installation section 122 away from the main body section 121. That is, after the installation section 122 is inserted into the wheel hub, the second sealing ring 4 is used for sealing on the inner side, and the lock nut 6 is used for thread locking on the outside. This connection method is more reliable and can prevent the inflation and deflation switch valve 100 from loosening due to the centrifugal force and vibration generated during the high-speed rotation of the tire.

[0072] Among them, adopting a method similar to the installation of a valve stem as described above can reliably fix the inflation and deflation switch valve 100 inside the wheel hub to prevent it from falling off. Moreover, since the parts are inside the tire, the erosion of external dust, mud and water on the parts can be reduced. The internal structure moves in the form of the movement of the piston 24, which is beneficial to the control of the gas flow path.

[0073] In addition, the second sealing ring 4 can be used to seal the tire to prevent gas from leaking. The installation section 122 is provided with a card slot to facilitate the positioning and limiting of the second sealing ring 4; the gasket 5 is installed on the side of the lock nut 6 facing the main body section 121, which can avoid direct contact between the lock nut 6 and the wheel hub to cause wear and disperse the stress generated by the lock nut 6; the lock nut 6 is threadedly connected to the installation section 122 outside the wheel hub, and the inflation and deflation switch valve 100 is fastened to the wheel hub by the tension generated by the locking thread. Its hexagonal design facilitates the disassembly and assembly of the inflation and deflation switch valve 100 and the installation with an accurate and appropriate torque.

[0074] The inflation and deflation system according to the second aspect embodiment of the present invention includes the inflation and deflation switch valve 100 of the above embodiment. In this way, the inflation and deflation system with the inflation and deflation switch valve 100 can achieve the effect of stable automatic inflation and deflation work until the set air pressure, thereby improving the reliability and stability of inflation and deflation.

[0075] The working process of the inflation and deflation system in the automatic inflation mode or deflation mode is introduced in detail below:

[0076] Inflation mode: The tire pressure of the vehicle is monitored in real time by a pressure sensor installed inside the tire and the tire pressure is sent to the central monitoring and control module. When the tire pressure is lower than the set pressure range, the central monitoring and control module issues a working instruction to open the pipeline solenoid valve and the air source for the under-inflated tire. The air pressure reaches the rotating air chamber 212 of the hub bearing unit through the intake pipe and the outlet pipe of the solenoid valve, and finally reaches the inflation and deflation switch valve 100 inside the tire. The air source reaches the air chamber 212 through the first channel 211. After the air pressure (the air pressure is greater than the elastic force of the elastic member 32) acts on the pressure surface of the piston 24, the piston 24 is pushed to move axially along its own axis to the axial limit position of the valve body 12 for the piston 24. The gas flow path between the air chamber 212 and the second channel 213 is opened. The air source reaches the tire through the second channel 213, continuously inflating the tire. The air pressure sensor inside the tire continuously feeds back the real-time air pressure to the central monitoring and control module. When it is monitored that the tire pressure reaches the requirement, a working instruction is sent to close the air source. At this time, the air pressure acting on the pressure surface of the piston 24 becomes smaller, the air pressure becomes smaller, and the spring force of the elastic member 32 acts on the locking member 31 to make the locking member 31 rotate along the first inclined surface 112 to the locking groove 111 to reach equilibrium. The air source is opened again to compress the elastic member 32 again and at the same time make the second locking portion 311 on the locking member 31 rotate to the second inclined surface 113. Subsequently, the air source is closed again and the deflation solenoid valve is opened to quickly discharge the air pressure in the entire pipeline, making the entire pipeline reach normal atmospheric pressure. At this time, the second locking portion 311 on the locking member 31 is stuck into the chute 114 under the action of the elastic force of the elastic member 32, pushing the piston 24 to quickly reset and closing the inflation and deflation switch valve 100, completing the entire inflation work.

[0077] Deflation mode: The tire pressure of the vehicle is monitored in real time by a pressure sensor installed inside the tire, and the tire pressure is sent to the central monitoring and control module. When the tire pressure is higher than the set pressure range, the central monitoring and control module issues a working instruction to open the pipeline solenoid valve and the air source of the tire with high pressure. The air pressure passes through the solenoid valve intake and outlet pipelines and reaches the rotating air chamber 212 of the hub bearing unit, and finally reaches the inflation and deflation switch valve 100 inside the tire. The air source reaches the air chamber 212 through the first channel 211. The air pressure acting on the pressure surface of the piston 24 pushes the piston 24 to move axially along its own axis to the axial limit position of the valve body 12 for the piston 24, and the inflation and deflation switch valve 100 is opened. Subsequently, a working instruction is immediately sent to close the air source and open the deflation solenoid valve. At this time, the air pressure acting on the pressure surface of the piston 24 becomes smaller, the air pressure becomes smaller, and the spring force of the elastic member 32 acts on the locking member 31 to make the locking member 31 rotate along the first inclined surface 112 to the locking groove 111 to reach equilibrium. The piston 24 cannot be fully reset, and the gas in the tire continuously deflates through the deflation solenoid valve. The air pressure sensor inside the tire continuously feeds back the real-time air pressure to the central monitoring and control module. When the tire pressure inside the tire reaches the required value, the deflation solenoid valve is closed and the air source is opened, so that the elastic member 32 is compressed again and at the same time the locking member 31 rotates to the second inclined surface 113. Subsequently, the air source is closed again and the deflation solenoid valve is opened to quickly discharge the air pressure of the entire pipeline, so that the entire pipeline reaches normal atmospheric pressure. At this time, the second locking portion 311 of the locking member 31 is clamped into the chute 114 under the action of the elastic member 32, pushing the piston 24 to quickly reset and closing the inflation and deflation switch valve 100, and the entire deflation work is completed.

[0078] The vehicle according to the third aspect embodiment of the present invention includes the inflation and deflation system of the above embodiment. Thus, the vehicle with such an inflation and deflation system can achieve the effect of stable automatic inflation and deflation of the tire until the set air pressure, thereby improving the reliability and stability of inflation and deflation, and further enhancing the market competitiveness of the vehicle.

[0079] In the description of the present invention, it should be understood that the orientation or positional relationship indicated by the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "axial", "radial", "circumferential", etc. is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation to the present invention.

[0080] In the description of the present application, it should be noted that unless otherwise clearly defined and limited, the terms "installed", "connected", and "coupled" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two components. For those of ordinary skill in the art, the specific meanings of the above terms in the present application can be understood according to specific circumstances.

[0081] In the description of this specification, the descriptions with reference to terms such as "one embodiment", "some embodiments", "schematic embodiments", "examples", "specific examples", or "some examples", etc., mean that the specific features, structures, materials, or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic descriptions of the above terms do not necessarily refer to the same embodiment or example.

[0082] Although the embodiments of the present invention have been shown and described, those of ordinary skill in the art can understand that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the claims and their equivalents.

[0083] In the description of this specification, the descriptions with reference to terms such as "one embodiment", "some embodiments", "schematic embodiments", "examples", "specific examples", or "some examples", etc., mean that the specific features, structures, materials, or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic descriptions of the above terms do not necessarily refer to the same embodiment or example.

[0084] Although the embodiments of the present invention have been shown and described, those of ordinary skill in the art can understand that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the claims and their equivalents.

Claims

1. A gas charging and discharging switch valve (100), characterized in that: include: A valve body assembly (1), wherein the valve body assembly (1) is formed with a first locking portion (11); A piston assembly (2), the piston assembly (2) being movably disposed in the valve body assembly (1), and a charging and discharging passage (21) being formed between the piston assembly (2) and the valve body assembly (1); An elastic locking assembly (3), wherein the elastic locking assembly (3) is arranged in the valve body assembly (1), and the elastic locking assembly (3) abuts against a side of the piston assembly (2) that is away from the charging and discharging passage (21); The elastic locking assembly (3) has a locking state and an unlocking state. When the elastic locking assembly (3) is in the locking state, the elastic locking assembly (3) is locked with the first locking portion (11), and the piston assembly (2) opens the charging and discharging passage (21). When the elastic locking assembly (3) is in the unlocking state, the elastic locking assembly (3) is unlocked with the first locking portion (11), and the elastic locking assembly (3) and the piston assembly (2) provide elastic force to the piston assembly (2), so that the piston assembly (2) closes the charging and discharging passage (21).

2. The gas charging and discharging switch valve (100) according to claim 1, characterized in that: The elastic locking assembly (3) comprises: A locking member (31), wherein the locking member (31) comprises a second locking portion (311), and when the elastic locking assembly (3) is in the locked state, the first locking portion (11) and the second locking portion (311) are locked and matched; An elastic member (32), the elastic member (32) abutting against a side of the locking member (31) facing away from the inflation and deflation passage (21).

3. The gas charging and discharging switch valve (100) according to claim 2, characterized in that: The first locking portion (11) is formed with a locking groove (111), a first inclined surface (112) and a second inclined surface (113); the locking groove (111) is located between the first inclined surface (112) and the second inclined surface (113); the second locking portion (311) enters the locking groove (111) in a rotational manner through the first inclined surface (112) and moves away from the locking groove (111) in a rotational manner through the second inclined surface (113).

4. The gas charging and discharging switch valve (100) according to claim 3, characterized in that: The second locking portion (311) is formed with a third inclined surface (312) for cooperating with the first inclined surface (112) and the second inclined surface (113), and the piston assembly (2) is formed with a fourth inclined surface (22) for cooperating with the third inclined surface (312).

5. The gas charging and discharging switch valve (100) according to claim 2, characterized in that: There are a plurality of the first locking portions (11), and the plurality of the first locking portions (11) are arranged at intervals in the circumferential direction of the valve body assembly (1); The locking member (31) comprises a plurality of the second locking portions (311), and the plurality of the first locking portions (11) correspond one to one to the plurality of the second locking portions (311).

6. The gas charging and discharging switch valve (100) according to claim 5, characterized in that: A slide groove (114) extending along the moving direction of the piston assembly (2) is formed between two adjacent first locking portions (11), and a sliding block (23) is formed on the outer periphery of the piston assembly (2), and the sliding block (23) cooperates with the slide groove (114).

7. The gas charging and discharging switch valve (100) according to claim 2, characterized in that: The locking member (31) further comprises: A first supporting plate (313), wherein the second locking portion (311) is arranged on one side of the first supporting plate (313); A first limiting column (314), wherein the first limiting column (314) is arranged on the other side of the first supporting plate (313), and one end of the elastic member (32) abuts against the other side of the first supporting plate (313) and is sleeved on the first limiting column (314).

8. The gas charging and discharging switch valve (100) according to claim 7, characterized in that: The elastic locking assembly (3) further comprises: A support member (33), wherein the support member (33) comprises: A second support plate (34), the second support plate (34) abutting against a wall of the valve body assembly (1); A second limiting column (35), wherein the second limiting column (35) is arranged on the second supporting plate (34), and the other end of the elastic member (32) abuts against the second supporting plate (34) and is sleeved on the second limiting column (35).

9. The gas charging and discharging switch valve (100) according to claim 1, characterized in that: The gas charging and discharging channel (21) comprises a first channel (211), an air chamber (212) and a second channel (213); The valve body assembly (1) comprises: a valve body (12), the piston assembly (2) being movably disposed in the valve body (12), and the valve body (12) being formed with the first channel (211); A valve cover (13), wherein the valve cover (13) is connected to the valve body (12), and the elastic locking assembly (3) is arranged in the valve cover (13); A vent plug (14), the vent plug (14) being arranged on the valve body (12), the vent plug (14) being formed with the second channel (213), an air chamber (212) being formed between the valve body (12), the vent plug (14) and the piston assembly (2), the air chamber (212) being located between the first channel (211) and the second channel (213), the piston assembly (2) being adapted to disconnect the second channel (213) from the air chamber (212) under the action of an elastic force.

10. The gas charging and discharging switch valve (100) according to claim 9, characterized in that: The piston assembly (2) comprises: Piston (24); A sealing member (25), wherein the sealing member (25) is arranged on the piston (24); when the elastic locking assembly (3) is in the unlocked state, the sealing member (25) abuts against the venting plug (14) to disconnect the second channel (213) from the air chamber (212).

11. The gas charging and discharging switch valve (100) according to claim 10, characterized in that: The piston assembly (2) further comprises: A plurality of first sealing rings (26), a plurality of sealing grooves spaced apart along the axial direction of the piston (24) are formed on the outer periphery of the piston (24), and the plurality of first sealing rings (26) are matched with the plurality of sealing grooves in a one-to-one correspondence.

12. The gas charging and discharging switch valve (100) according to claim 10, characterized in that: The vent plug (14) is provided with a boss (141) protruding toward the sealing member (25).

13. The gas charging and discharging switch valve (100) according to claim 9, characterized in that: The valve body (12) comprises: A main body section (121), the valve cover (13) and the air release plug (14) are respectively arranged at two ends of the main body section (121); The mounting section (122) is connected to the outer periphery of the main body section (121) and has a central axis perpendicular to the central axis of the main body section (121). The mounting section (122) is formed with the first channel (211).

14. A gas filling and deflation system, characterized in that: include: The gas charging and discharging switching valve (100) according to any one of claims 1 to 13.

15. A vehicle, characterized in that: include: The inflation and deflation system of claim 14.

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