CN114704774B

CN114704774B - Inflatable structure

Info

Publication number: CN114704774B
Application number: CN202210409217.2A
Authority: CN
Inventors: 任大江
Original assignee: Guangzhou Shimei Technology Co ltd
Current assignee: Guangzhou Shimei Technology Co ltd
Priority date: 2022-04-19
Filing date: 2022-04-19
Publication date: 2023-05-16
Anticipated expiration: 2042-04-19
Also published as: CN114704774A

Abstract

The invention provides an inflation structure, which comprises a trigger switch, wherein the trigger switch comprises a first valve core and a switch body, the first valve core is movably arranged in a conduction cavity in the switch body in a penetrating way, a sealing ring with a smaller caliber than that of the conduction cavity is arranged on the first valve core, and an elastic element is arranged between the first valve core and the conduction cavity; the pressure reducing valve comprises a pressure reducing valve body, wherein a first cavity and a second cavity which are communicated with each other are arranged in the pressure reducing valve body, a gas cylinder switch is arranged in the first cavity, a pressure control device is arranged in the second cavity, and a first channel communicated with the conducting cavity and the first cavity is arranged in the pressure control device; the bottom that the gas cylinder switch can stretch out the second cavity blocks the intercommunication of first cavity and second cavity, supports pressure control device, and when the first case did not seal and switch on the cavity, pressure control device and gas cylinder switch interact in turn makes switch on cavity, first passageway and gas cylinder intercommunication. The quick and stable inflation operation can be realized through the cooperation of the trigger switch and the pressure reducing valve.

Description

Inflatable structure

Technical Field

The invention belongs to the technical field of inflation, and particularly relates to an inflation structure.

Background

Aiming at the storage difficulty of wine after bottle opening, a plurality of inert gases which do not react with the wine in the bottle are injected into the bottle to store, and the operation of replacing the wine in the bottle can be further realized through the gas injection. However, the inflatable structure of the device is generally connected with a gas cylinder through a gas pipe, and is connected with a liquid taking needle matched with the cylinder body after being connected with a pressure reducing valve, so that the portable usability of the inflatable structure is poor, all parts are required to be connected in advance during operation, and the use experience is extremely poor; still some inflatable structures are integrated with gas cylinder and relief pressure valve, still will get the liquid needle integrated in an organic whole even, but this type of inflatable structure still generally needs additionally to set up the triggering mechanism that controls the inflation, and valve body structure is complicated relatively moreover, is difficult to control the pressure of giving vent to anger, and when and after the use all need control corresponding triggering mechanism and realize the opening or stopping of aerifing, also have certain influence to the use experience, simultaneously, this type of inflatable structure's stability and life also very easily receive consequently the influence.

Disclosure of Invention

In order to solve the problems that in the prior art, the gas charging structure is poor in portability and complex in valve body structure, the gas outlet pressure is difficult to control, and when in use and after use, the corresponding trigger mechanism is required to be controlled to realize the opening or stopping of gas charging, and the gas charging structure has certain influence on the use experience, has stability and service life and is easy to influence due to the stability and the service life.

The invention proposes an inflatable structure comprising:

the trigger switch comprises a first valve core and a switch body, wherein the first valve core is movably arranged in a conduction cavity in the switch body in a penetrating manner, a sealing ring with the minimum caliber larger than that of the conduction cavity is arranged on the first valve core, and an elastic element is arranged between the first valve core and the conduction cavity;

the pressure reducing valve comprises a pressure reducing valve body, wherein a first cavity and a second cavity which are communicated with each other are arranged in the pressure reducing valve body, a gas cylinder switch is arranged in the first cavity, a pressure control device is arranged in the second cavity, and a first channel which is communicated with the conducting cavity and the first cavity is arranged in the pressure control device;

the gas cylinder switch can extend out of the bottom of the second cavity to block the communication between the first cavity and the second cavity and resist the pressure control device, and when the first valve core does not seal the conducting cavity, the pressure control device and the gas cylinder switch alternately interact to enable the conducting cavity, the first channel and the gas cylinder to be communicated. The utility model provides an inflatable structure passes through trigger switch's structure setting, can switch on inside air flue automatically when trigger switch's first case and the cooperation of aerifing the opponent, realizes the stable continuous output of air supply to aerifing the opponent through relief pressure valve inside gas cylinder switch and pressure control device, breaks away from and can self-closing air flue under elastic element's effect to trigger switch after aerifing the opponent, need not extra operation control, has simplified the operation of aerifing, promotes the operation and experiences the sense.

In some specific embodiments, the upper portion of the first valve spool protrudes beyond the surface of the switch body, and the resilient element comprises a spring. By virtue of the arrangement, the first valve core can be conveniently matched with the inflatable counter piece.

In some specific embodiments, the minimum caliber of the conduction cavity is located at the upper part of the conduction cavity, an air outlet gap exists between the upper part of the first valve core and the upper part of the conduction cavity, the sealing ring is arranged at the lower part of the first valve core, and the elastic element is arranged at the bottom end of the first valve core. The trigger switch of this structure simple structure, the size of first case is great relatively, and stability is stronger.

In some specific embodiments, the minimum caliber of the conduction cavity is located at the lower part of the conduction cavity, an air outlet gap exists between the lower part of the first valve core and the minimum caliber of the conduction cavity, and the lower part of the first valve core penetrates through the minimum caliber of the conduction cavity and is provided with a sealing ring with a size larger than the minimum caliber at the other side. The trigger switch of the structure can control the size of the head to be smaller, and the resistance is smaller when the trigger switch is matched with the inflatable opponent, so that the operation is more convenient.

In some specific embodiments, two annular protrusions corresponding to the caliber of the upper portion of the conducting cavity are arranged in the middle of the first valve core, a second sealing ring is arranged in a groove between the two annular protrusions, the elastic element is arranged at the bottom of the lower annular protrusion, the upper portion of the first valve core is of a hollow structure, and an opening communicated with the hollow structure is formed below the lower annular protrusion. By means of the arrangement, the first valve core can move more stably in the conducting cavity, shaking is avoided, and meanwhile sealing performance is guaranteed.

In some specific embodiments, the gas cylinder switch comprises a switch valve seat, a second valve core, a valve core sealing piece and a puncture piece, wherein the second valve core is movably arranged in an inner cavity of the switch valve seat, the valve core sealing piece is fixed at the top end of the first cavity by the switch valve seat, the puncture piece is arranged at the other end of the switch valve seat opposite to the valve core sealing piece, and a second elastic element is arranged at the bottom of the second valve core. The second valve core is limited in the switch valve seat by virtue of the valve core sealing piece and the puncture piece, and the second valve core is pushed by the second elastic element to be matched with the valve core sealing piece so as to realize the sealing of the first cavity and the second cavity.

In some specific embodiments, the device further comprises a gas cylinder sealing pad and a gas cylinder fixing seat, wherein the gas cylinder sealing pad is sleeved on the puncture piece and is pressed on the end face of the switch valve seat through the gas cylinder fixing seat. By this arrangement, the air tightness at the time of fitting the gas cylinder can be ensured.

In some specific embodiments, the switch valve seat and the gas cylinder fixing seat are fixedly matched with the first cavity through a threaded structure arranged in the first cavity, and a sealing ring is further arranged between the switch valve seat and the first cavity. By means of the arrangement, the gas cylinder fixing seat can be used for fixing the gas cylinder sealing gasket and simultaneously further fixing the switch valve seat.

In some specific embodiments, the pressure control device comprises a piston seat, a piston and a spring, the piston and the piston seat are of hollow T-shaped structures, the upper portion of the piston seat is fixed at the mouth of the second cavity, the lower portion of the piston is movably sleeved in the piston seat, the upper portion of the piston is movably sleeved in the second cavity, sealing rings are arranged between the upper portion of the piston and the inner wall of the piston seat, and between the lower portion of the piston and the inner wall of the second cavity, and the spring is arranged in the second cavity outside the piston and the piston seat. By means of the pressure control device, when the trigger switch is turned on, the piston jacked by the compressed gas is controlled through the acting force of the spring, the second valve core of the gas cylinder switch is forced to move downwards to release the sealing of the first cavity and the second cavity, and the second valve core is continuously reciprocated under the action of the gas pressure of the gas cylinder, so that the conduction of the gas charging channel is realized.

In some specific embodiments, the lower end surface of the piston is provided with a concave structure, and an inclined hole is formed in the concave structure at a position far away from the gas cylinder switch, and the inclined hole is communicated with the hollow opening at the upper part of the piston. By means of the arrangement, the second valve core of the gas cylinder switch can be avoided, the second valve core is prevented from blocking the gas passage, and meanwhile, the arrangement of the concave structure can help to drain residual pressure in the gas cylinder when gas in the gas cylinder is about to be used up and the piston is unable to jack up.

Compared with the prior art, the invention has the beneficial effects that:

the configuration of the first valve core and the elastic element arranged on the conducting cavity on the trigger switch is utilized by the inflation structure in the application, so that the connection during contact matching is realized, the closed automatic trigger function during disconnection matching is realized, and a user does not need to additionally control the inflation switch in the inflation process, so that the operation is convenient. In addition, through the gas cylinder switch in two cavitys that set up in the relief pressure valve, and have the pressure control device of piston spring structure, thereby the gas cylinder is assembled on the gas cylinder switch back through compressed gas jack-up piston and through the intercommunication between two cavitys of case sealing member blocking, switch on cavity and the inside passageway intercommunication of piston after the trigger switch and the cooperation of inflatable opponent, the piston can be under the effort of spring reciprocating motion, the second case in the continuous lower gas cylinder switch, make the gas cylinder gassing, thereby also can change the pressure of giving vent to anger through the cooperation size change spring stroke of adjusting piston seat and first cavity, this stable in structure is reliable, and trigger operation is simple and convenient more.

Drawings

The accompanying drawings are included to provide a further understanding of the embodiments and are incorporated in and constitute a part of this specification. The drawings illustrate embodiments and together with the description serve to explain the principles of the invention. Many of the intended advantages of other embodiments and embodiments will be readily appreciated as they become better understood by reference to the following detailed description. The elements of the drawings are not necessarily to scale relative to each other. Like reference numerals designate corresponding similar parts.

FIG. 1 is a schematic cross-sectional view of an inflatable structure according to one embodiment of the invention;

FIG. 2 is a schematic diagram of a trigger switch according to a specific embodiment of the present invention;

FIG. 3 is a schematic cross-sectional view of a trigger switch according to a specific embodiment of the present invention;

FIG. 4 is a schematic diagram of the trigger switch according to a second specific embodiment of the present invention;

FIG. 5 is a schematic cross-sectional view of a trigger switch according to a second specific embodiment of the present invention;

FIG. 6 is a schematic diagram of a trigger switch according to a third specific embodiment of the present invention;

FIG. 7 is a schematic cross-sectional view of a pressure relief valve according to a specific embodiment of the present invention.

Meaning of each number in the figure: 100-trigger switch, 101-first valve core, 1011-vent hole, 1012-annular protrusion, 102-switch body, 1021-conducting cavity minimum caliber, 103-first sealing ring, 104-first valve core spring, 105-second sealing ring, 200-relief valve, 201-relief valve body, 2011-first cavity, 2012-second cavity, 202-piston seat, 203-spring, 204-piston, 2041-connecting hole, 2042-inclined hole, 2043-groove, 205-second valve core, 2051-second valve core spring, 206-valve core sealing member, 207-switch valve seat, 208-puncture member, 209-gas cylinder sealing pad, 210-gas cylinder fixing seat, 300-gas cylinder.

Detailed Description

In the following detailed description, reference is made to the accompanying drawings, which form a part hereof, and in which is shown by way of illustration specific embodiments in which the invention may be practiced. For this, directional terms, such as "top", "bottom", "left", "right", "upper", "lower", and the like, are used with reference to the orientation of the described figures. Because components of embodiments can be positioned in a number of different orientations, the directional terminology is used for purposes of illustration and is in no way limiting. It is to be understood that other embodiments may be utilized or logical changes may be made without departing from the scope of the present invention. The following detailed description is, therefore, not to be taken in a limiting sense, and the scope of the present invention is defined by the appended claims.

The present invention proposes an inflatable structure, fig. 1 shows a schematic cross-sectional view of an inflatable structure according to an embodiment of the present invention, and as shown in fig. 1, the inflatable structure includes a trigger switch 100, a pressure reducing valve 200, and a gas cylinder 300, wherein the trigger switch 100 is disposed on the pressure reducing valve 200, and the gas cylinder 300 is disposed inside the lower portion of the pressure reducing valve 200. The trigger switch 100 comprises a first valve core 101 and a switch body 102, wherein a hollow conduction cavity is formed in the switch body 102, the first valve core 101 is movably arranged in the conduction cavity in the switch body 102, the conduction of the conduction cavity can be blocked when the first valve core 101 moves in the conduction cavity, the trigger switch 100 can be used as a switch for controlling on-off while being used as an air outlet structure, and the control switch does not need to be additionally operated during use, so that the operation of inflation is simplified, and the use is convenient.

In a specific embodiment, the pressure reducing valve 200 includes a pressure reducing valve body 201, the pressure reducing valve body 201 has an upper cavity and a lower cavity, the two cavities are connected through a communication hole, wherein the upper cavity is used for setting a pressure control structure, the lower cavity is provided with a gas cylinder switch structure, the gas cylinder switch structure is matched with the gas cylinder 300 to obtain compressed gas in the gas cylinder, and the gas cylinder switch structure and the pressure control structure are matched with each other in an alternating interaction manner so that the compressed gas in the gas cylinder can be sprayed out from the gas outlet of the first valve core 101 through the gas cylinder switch structure, the communication hole, the pressure control structure and the conduction cavity of the trigger switch 100.

Fig. 2 is a schematic structural view of a trigger switch according to an embodiment of the present invention, and as shown in fig. 2, a first valve core 101 of the trigger switch 100 extends out of an upper end surface of a switch body 102, and an air outlet hole 1011 is formed at an upper end of the first valve core 101 extending out of the switch body 102. As shown in the schematic cross-sectional view of the trigger switch according to an embodiment of the present invention shown in fig. 3, the upper portion of the conducting cavity in the switch body 102 has a larger diameter than the lower portion, and the connecting portion between the upper portion and the lower portion of the conducting cavity has a minimum diameter 1021 of the conducting cavity, and the minimum diameter 1021 of the conducting cavity is in transitional connection with the lower portion of the conducting cavity through a conical surface. The first valve core 101 is in a columnar structure, two annular protrusions 1012 are arranged on the upper circumferential surface of the first valve core 101, the size of the two annular protrusions 1012 is equal to the size of the upper diameter of the conducting cavity, and therefore the first valve core 101 can stably move up and down in the conducting cavity without shaking. An annular groove formed between the annular protrusions 1012 is used to place the sealing ring 103 to seal between the upper portion of the first valve spool 101 and the upper portion of the through cavity. The lower part of the first valve core 101 has a size smaller than the minimum caliber 1021 of the conducting cavity, so that the lower part of the first valve core 101 can pass through the minimum caliber 1021 of the conducting cavity, gas can pass through a gap between the two, an annular groove is formed in the lower surface of the first valve core 101 and is used for placing a sealing ring 105, the size of the sealing ring 105 is larger than the minimum caliber 1021 of the conducting cavity, and blocking of the minimum caliber 1021 of the conducting cavity can be achieved through conical surface cooperation of the sealing ring 105 and the lower part of the minimum caliber 1021 of the conducting cavity. A spring 104 is arranged below the two annular protrusions 1012, one end of the spring 104 is matched with the bottom surface of the upper part of the conduction cavity, and the other end of the spring 104 is matched with the lower part of the two annular protrusions 1012 of the first valve core 101, so that the first valve core 101 is jacked upwards, and the sealing ring 105 at the lower part of the first valve core 101 is always positioned at the position of blocking the minimum caliber 1021 of the conduction cavity. Alternatively, the spring 104 may be another elastic element, so long as the first valve core 101 can be lifted up, so that the sealing ring 105 at the lower part of the first valve core 101 is always at the position of blocking the minimum caliber 1021 of the conducting cavity, which can achieve the technical effect of the invention.

In a specific embodiment, the upper portion of the first valve core 101 is hollow, and radial openings communicating with the upper hollow structure are opened below the two annular protrusions 1012, so that the upper portion of the communicating cavity is always communicated with the outside. When the first valve core 101 is in press fit with an external inflating hand piece, the spring 104 is compressed downwards by the first valve core 101, the sealing ring 105 does not block the minimum caliber 1021 of the conducting cavity, and air in the lower cavity of the conducting cavity can be ejected through the minimum caliber 1021 of the conducting cavity, the upper part of the conducting cavity, radial holes below two annular protrusions 1012 of the first valve core 101, the upper hollow structure of the first valve core 101 and the air outlet 1011, so that the air adding action is realized; when the first valve core 101 leaves the inflatable counter piece, the first valve core 101 is jacked up upwards under the action of the spring 104, and the sealing ring 105 is matched with the conical surface below the minimum aperture 1021 of the conducting cavity to block the minimum aperture 1021 of the conducting cavity, so that sealing is realized, and gas leakage in the interior is prevented. The trigger switch is simple in structure, the trigger mechanism is directly arranged on the air outlet structure, the trigger mechanism is matched to serve as a trigger condition, other control switches are not needed, the inflation operation flow is simplified, and the operation of a user is facilitated. The first valve core 101 of this structure is smaller in size, when with aerifing the opponent spare cooperation, can realize quick inflation through the cooperation of the inflation inlet that first valve core 101 and opponent spare are provided with the sealing washer, and less first valve core 101 structure also makes the resistance when pulling out the plug less, and the operation is got up more easily.

With continued reference to fig. 4, fig. 4 shows a schematic structural diagram of a trigger switch according to a second specific embodiment of the present invention, and as shown in a schematic sectional view of the trigger switch according to the second specific embodiment of the present invention in conjunction with fig. 5, a first valve core 101' of the trigger switch 100 also protrudes from an upper end surface of the switch body 102, a head portion of the first valve core 101' of the structure is a cross structure, an internal conducting cavity of the switch body 102' may be divided into an upper cavity and a lower cavity, a cavity caliber of the upper portion is smaller than a cavity caliber of the lower portion, and the two cavities are connected through a conical surface transition, the cross structure of the upper portion of the first valve core 101' has a diameter same as that of the upper conducting cavity, a gap between the cross structure and the conducting cavity may be used to communicate an outside with the conducting cavity, an annular groove is provided below the cross structure of the first valve core 101' for placing a sealing ring 105', the sealing ring 105' may cooperate with the conical surface between the two cavities to realize sealing of the two cavities, a spring 104' is provided at a lower portion of the first valve core 101' and another end of the spring 104' cooperates with a bottom portion of the switch body 102' by a conical surface, and the upper portion of the valve core 101' is not shown in a position where the upper portion of the valve core 101' is always in contact with the lower portion of the sealing ring 101. In some other embodiments, the first valve core 101 'may also adopt a structure other than the upper part of the cross structure (for example, a cylindrical structure with a gap with the upper part of the conducting cavity), which only needs to meet the requirement that when the first valve core 101' is matched with the inflatable counter part for pressing down, the upper cavity and the lower cavity of the conducting cavity can be conducted, and the technical effect of the invention can be achieved. When the trigger switch of this structure is inflated, the first valve core 101' is difficult to seal with the inflatable counter piece, and the sealing structure needs to be arranged on the switch body (for example, the outer surface of the switch body), so that the resistance of the insertion fit is larger than that of the first valve core 101 in fig. 2 and 3, and the larger size of the switch body can also enable the fit to be more stable and reliable, so that the trigger switch is suitable for inflation operation with larger pressure.

Fig. 6 shows a schematic structural diagram of a trigger switch according to a third specific embodiment of the present invention, as shown in fig. 6, the trigger switch may not be directly disposed on a pressure reducing valve, but the first valve core 101 and the switch body 102 are disposed on a connecting piece 106, the connecting piece 106 is externally disposed outside the pressure reducing valve through an air pipe 107, and the trigger switch of the structure may be suitable for an inflation operation of a gas cylinder structure, so as to avoid inconvenience in operation caused by an excessively large volume or weight of the gas cylinder. The structures of the first valve core 101 and the switch body 102 of the trigger switch of the structure can be adaptively adjusted according to the structures of the embodiments in fig. 2, 3 or fig. 4 and 5, but the overall principle is consistent, and the technical effect of the invention can be achieved without repeated description, and the setting of the gas cylinder can reduce the period of replacing the gas cylinder, so that the trigger switch is suitable for long-term frequent gas filling operation.

Fig. 7 shows a schematic cross-sectional view of a pressure reducing valve according to a specific embodiment of the present invention, as shown in fig. 7, the interior of a pressure reducing valve body 201 of the pressure reducing valve 200 includes, from bottom to top, a first cavity 2011 and a second cavity 2012, the first cavity 2011 and the second cavity 2012 are communicated through a communication hole, the first cavity 2011 is used for setting a gas cylinder switch structure, the gas cylinder switch structure includes a second valve core 205, a valve core sealing member 206, a switch valve seat 207, a piercing member 208, a gas cylinder sealing pad 209 and a gas cylinder fixing seat 210, an upper cavity of the first cavity 2011 is a cavity with a smaller diameter, a lower cavity is a cavity with a larger diameter, an inner surface of the lower cavity is provided with an internal thread, the switch valve seat 207 and the gas cylinder fixing seat 210 are provided with corresponding matched external thread structures, the switch valve seat 207 is a T-shaped structure corresponding to the upper portion and the lower portion of the first cavity 2011, an upper end surface of the switch valve seat 207 is provided with a groove for accommodating the valve core sealing member 206, the depth of the groove 206 is lower than the height of the sealing member 206, the upper portion of the valve core sealing member 206 is a small diameter corresponding to the upper end surface of the valve core sealing member and the lower cavity is a through the through hole of the upper thread structure of the lower cavity 2011. The lower end face of the switch valve seat 207 is provided with a groove for accommodating the puncture member 208, the depth of the groove is equal to the height of the head of the puncture member 208, the puncture member 208 is of a T-shaped structure, the lower part is provided with a tapered conical structure, the middle part of the puncture member is penetrated with a through hole for inserting a gas cylinder to lead out gas in the gas cylinder, the gas cylinder sealing gasket 209 is sleeved on the conical lower surface of the puncture member, the gas cylinder sealing gasket 209 and the puncture member 208 are tightly pressed on the lower end face of the switch valve seat 207 through the gas cylinder fixing seat, and by virtue of the corresponding matched external thread structure arranged on the switch valve seat 207 and the gas cylinder fixing seat 210, double locking on the same thread can be realized, and the release of the internal structure is prevented in an auxiliary manner. In a preferred embodiment, a gas purifying device 211 may be disposed between the piercing member 208 and the recess of the switching valve seat 207, the gas purifying device 211 may be a structure such as a filter screen, and a microporous filter, and when the gas source is, for example, carbon dioxide, the gas cylinder is in a liquid state, and when the gas cylinder releases pressure, the liquid gas may be reduced to enter the pressure reducing valve cavity by the gas purifying device, and the gas purifying device may reduce the injection speed of the initial high-pressure gas (liquid), and the pressure of the gas entering the main pressure reducing cavity may be more uniform by the microporous structure of the gas purifier. The gas cylinder fixing seat 210 is of a hollow structure, the lower cavity of the hollow structure is used for being matched with the gas cylinder head, and an annular groove is further formed in the lower cavity, and is used for placing a sealing ring to be matched with the gas cylinder head in a sealing mode.

In a specific embodiment, an annular groove for placing a sealing ring is provided at the matching position between the upper part of the switch valve seat 207 and the upper part of the first cavity 2011, so as to realize the sealing between the switch valve seat 207 and the first cavity 2011, further prevent gas leakage, and improve the tightness of the whole inflation structure. The middle part of switch disk seat 207 has a through-hole, the aperture on valve core sealing member 206 and the puncture piece 208 that upper and lower both ends set up is less than the middle part through-hole of switch disk seat 207, second valve core 205 is arranged in this through-hole inside, make second valve core 205 can move between valve core sealing member 206 and puncture piece 208 in the through-hole, second valve core 205 is the cylindricality structure, be close to the bottom of cylindricality structure and be provided with annular protruding, this annular protruding is equivalent with the aperture of the middle part through-hole of switch disk seat 207, and there is a breach on the annular protruding at least, in order to guarantee that the middle part through-hole of switch disk seat 207 switches on all the time, annular protruding bottom is provided with spring 2051, the bottom and the puncture piece 208 butt of spring 2051, and press second valve core 205 to valve core sealing member 206 on, the upper portion diameter of cylindricality structure of second valve core 205 is slightly less than the lower part, and through the conical surface transition, this conical surface can block the through-hole that corresponds between first cavity 2011 and the second cavity 2012 of cylindricality structure, the upper diameter of cylindricality structure of second valve core 205 is slightly less than the middle part through-hole sealing member 206, make gas from the clearance between the two can be passed through from the valve core sealing member 206.

In a specific embodiment, a pressure control structure is disposed inside the second cavity 2012, the pressure control structure includes a piston seat 202, a large spring 203 and a piston 204, where the piston seat 202 and the piston 204 are both in T-shaped structures, the head of the piston seat 202 is fixedly matched with the mouth of the second cavity 2012, specifically, the two are matched and can be fixed through fastening and matching of threaded connection, the lower part of the piston seat 202 is a columnar structure smaller than the inner diameter of the second cavity 2012, the center of the piston seat 202 is provided with a stepped hole, and the upper part of the piston seat is perforated for matching with the switch body 102 of the trigger switch 100, and can also be realized in a threaded fastening and matching manner, so that the disassembly is convenient; the lower opening is for receiving the lower portion of the piston 204, and the inner wall of the lower opening is further provided with an annular groove for placing a sealing ring for ensuring tightness of the piston 204 when moving inside the piston seat 202. The head of the piston 204 has a diameter corresponding to the inner diameter of the second chamber 2012, and the circumferential surface of the head of the piston 204 is provided with an annular groove in which a seal ring is provided to ensure tightness of the second chamber 2012 between the lower portion of the piston 204 and the head. The piston 204 is inverted, the head of the piston 204 is arranged at the bottom of the second cavity 2012, the lower part of the piston is inserted into the lower opening of the piston seat 202, the large spring 203 is sleeved in the second cavity 2012 between the head of the piston seat 202 and the head of the piston 204, and the piston 204 is pressed to the bottom of the second cavity 2012. An opening 2041 is arranged in the lower cylinder of the piston 204, an inclined hole 2042 communicated with the opening 2041 is arranged in the head of the piston 204, a groove 2043 is arranged on the end face of the head of the piston 204, the inclined hole 2042 is positioned on the end face of the groove 2043 at the head outlet of the piston 204, the inclined hole 2042 can avoid a second valve core 205 extending out of a communication hole between the first cavity 2011 and the second cavity 2012, the second valve core 205 is prevented from blocking a pipeline inside the piston 204, and the groove 2043 can prevent the inclined hole 2042 from being communicated with the communication hole between the first cavity 2011 and the second cavity 2012 when the piston 204 is pressed to the bottom of the second cavity 2012 by a large spring 203, so that normal air outlet cannot be achieved. The provision of the recess 2043 also helps to remove residual pressure from the cylinder when the cylinder is about to run out of gas and is unable to jack the piston. In some other embodiments, the inclined holes 2042 may be provided as a plurality of inclined holes with appropriate pore diameters evenly distributed on the circumference of the end face of the groove 2043, so that the pressure is more balanced when the pressure is conducted.

In a specific embodiment, the circumferential surface of the head of the piston seat 202 is provided with a plurality of grooves, so that when the piston seat 202 is matched with the second cavity 2012, the upper portion of the second cavity 2012 can be communicated with the outside through the grooves to assist air intake or air exhaust of the piston 204 in the reciprocating process, so that work done on a cavity at the upper portion of the second cavity 2012 by the piston 204 when the piston moves reciprocally due to the sealing of the upper portion of the second cavity 2012 is avoided, and the reciprocating movement of the piston 204 is affected. The plurality of grooves can also be used as assembly clamping positions, so that the piston seat 202 can be conveniently disassembled and assembled, and the compression stroke of the large spring 203 can be finely adjusted by utilizing the grooves, so that the air outlet pressure is changed. The upper side wall of the second cavity 2012 may be provided with an exhaust hole, which may also achieve the technical effects of the present invention. In some preferred embodiments, the vent hole formed on the upper side wall of the second cavity 2012 can also be used as a safety pressure relief hole, when the pressure relief valve is closed, if the gas cylinder switch valve in the cavity fails (cannot be sealed), the excessive pressure can completely jack up the piston 204, so that the sealing ring at the head of the piston 204 passes through the hole, and the high-pressure gas in the cavity can be relieved through the hole, thereby avoiding the danger of opening the pressure relief valve without knowledge.

The working principle of the pressure reducing valve structure is as follows: after the gas cylinder 300 is assembled on the gas cylinder fixing seat 210, the puncture member 208 punctures the plug of the gas cylinder head, compressed gas in the gas cylinder enters the through hole in the switch valve seat 207 through the through hole in the puncture member 208, at this time, the second valve core 205 is pressed on the conical surface structure of the valve core sealing member 206 under the action of the spring 2051, the top end of the second valve core 205 passes through the communication hole between the first cavity 2011 and the second cavity 2012 and exposes the bottom plane of the second cavity 2012, the large spring 203 in the second cavity 2012 presses the piston 204 downwards, the bottom of the piston 204 transmits the pressing force to force the second valve core 205 to descend so as to contact the closed air passage, at this time, the compressed gas in the gas cylinder 300 is sprayed into the second cavity 2012 to jack the piston 204 (at this time, the trigger switch 100 is in the closed state), when the trigger switch 100 is matched with the inflatable counter piece to open the air outlet channel, air is led out through the air outlet channel, the internal air pressure is reduced, at the moment, the piston 204 is in reciprocating motion, namely, the piston 204 continuously presses down the second valve core 205 to realize air release, after being jacked by compressed air, the piston is pressed down by the big spring 203 to realize continuous air release, the compression force of the big spring 203 can be used for controlling the adjustment of the air outlet pressure, so that the air outlet pressure can be subjected to fine adjustment control by adjusting the compression stroke of the big spring 203, the air outlet pressure of the inflatable structure can be controlled by virtue of the structural arrangement of the fine adjustment of the air outlet pressure, and in the operation of inflating and taking liquid of wine, the air pressure added into a wine bottle can be adjusted as required, thereby the flow rate of the wine can be controlled. Compared with the prior valve body with the inflatable structure for taking wine, the valve body is complex in structure and cannot adjust the inflation pressure, the inflatable structure is stable and reliable, the pressure control structure is internally controlled by the fine adjustment of the matching of the piston seat and the pressure reducing valve body, fine adjustment of the inflation pressure is further realized, and the whole inflatable operation is simpler, more convenient and controllable by virtue of the trigger switch and the integral setting of the air outlet structure.

It will be apparent to those skilled in the art that various modifications and variations can be made to the embodiments of the present invention without departing from the spirit and scope of the invention. In this manner, the invention is also intended to cover such modifications and variations as come within the scope of the appended claims and their equivalents. The word "comprising" does not exclude the presence of other elements or steps than those listed in a claim. The mere fact that certain measures are recited in mutually different dependent claims does not indicate that a combination of these measures cannot be used to advantage. Any reference signs in the claims shall not be construed as limiting the scope.

Claims

1. An inflatable structure, comprising:

the trigger switch comprises a first valve core and a switch body, wherein the first valve core is movably arranged in a conduction cavity in the switch body in a penetrating mode, a sealing ring with the minimum caliber larger than that of the conduction cavity is arranged on the first valve core, and an elastic element is arranged between the first valve core and the conduction cavity;

the gas cylinder switch can extend out of the bottom of the second cavity to block the communication between the first cavity and the second cavity and resist the pressure control device, and when the first valve core does not seal the conducting cavity, the pressure control device and the gas cylinder switch alternately interact to enable the conducting cavity, the first channel and the gas cylinder to be communicated.

2. The inflatable structure of claim 1, wherein an upper portion of the first valve core extends beyond a surface of the switch body, and wherein the resilient member comprises a spring.

3. The inflatable structure of claim 2, wherein the minimum caliber of the conducting cavity is located at the upper portion of the conducting cavity, an air outlet gap exists between the upper portion of the first valve core and the upper portion of the conducting cavity, the sealing ring is disposed at the lower portion of the first valve core, and the elastic element is disposed at the bottom end of the first valve core.

4. An inflatable structure according to claim 2, wherein the minimum aperture of the pass-through chamber is located at the lower part of the pass-through chamber, an air outlet gap exists between the lower part of the first valve core and the minimum aperture of the pass-through chamber, and the lower part of the first valve core passes through the minimum aperture of the pass-through chamber and is provided with the sealing ring with a size larger than the minimum aperture at the other side.

5. The inflatable structure of claim 4, wherein two annular protrusions corresponding to the caliber of the upper portion of the conducting cavity are arranged in the middle of the first valve core, a second sealing ring is arranged in a groove between the two annular protrusions, the elastic element is arranged at the bottom of the lower annular protrusion, the upper portion of the first valve core is of a hollow structure, and an opening communicated with the hollow structure is formed below the lower annular protrusion.

6. The gas charging structure according to claim 1, wherein the gas cylinder switch includes a switch valve seat, a second valve spool, a valve spool seal member, and a puncture member, the second valve spool is movably disposed in an inner cavity of the switch valve seat, the switch valve seat fixes the valve spool seal member to a top end of the first cavity, the puncture member is disposed at the other end of the switch valve seat with respect to the valve spool seal member, and a bottom portion of the second valve spool is provided with a second elastic member.

7. The inflatable structure of claim 6, further comprising a cylinder gasket and a cylinder holder, wherein the cylinder gasket is sleeved on the puncture member and is pressed against the end surface of the switch valve seat by the cylinder holder.

8. The inflatable structure of claim 7, wherein the switch valve seat and the cylinder fixing seat are fixedly matched with the first cavity through a threaded structure arranged in the first cavity, and a sealing ring is further arranged between the switch valve seat and the first cavity.

9. The inflatable structure of claim 1, wherein the pressure control device comprises a piston seat, a piston and a spring, the piston and the piston seat are of hollow T-shaped structures, the upper portion of the piston seat is fixed at the mouth of the second cavity, the lower portion of the piston is movably sleeved in the piston seat, the upper portion of the piston is movably sleeved in the second cavity, and sealing rings are arranged between the upper portion of the piston and the inner wall of the piston seat, between the lower portion of the piston and the inner wall of the second cavity, and the spring is arranged in the second cavity outside the piston and the piston seat.

10. An inflatable structure according to claim 9, wherein the lower end face of the piston is provided with a recess, and an inclined hole is formed in the recess at a position far from the gas cylinder switch, and the inclined hole is communicated with the hollow opening in the upper part of the piston.