WO2024055638A1

WO2024055638A1 - Combined pressure relief valve and inflatable body

Info

Publication number: WO2024055638A1
Application number: PCT/CN2023/097998
Authority: WO
Inventors: 王之岳
Original assignee: 东辉休闲运动用品(上海)有限公司
Priority date: 2022-09-14
Filing date: 2023-06-02
Publication date: 2024-03-21
Also published as: CN218152367U

Abstract

Disclosed is a combined pressure relief valve, used for a first object, the first object being provided with a gas chamber. The combined pressure relief valve comprises: a valve body (1) having a first channel (111), the first channel being adapted to be communicated with the gas chamber; a valve core (21) provided in the first channel, the valve core being capable of moving relative to the first channel, such that the first channel is communicated or not communicated with the outside; and a pressure relief assembly (3) detachably connected to the valve body, the pressure relief assembly comprising a second channel (321) and an elastic moving member (33), the second channel being communicated with the outside, and the elastic moving member being capable of moving relative to the second channel, such that the second channel is communicated or not communicated with the first channel, wherein when the second channel is communicated with the first channel, the gas chamber can be deflated by means of the combined pressure relief valve. According to the combined pressure relief valve, the pressure relief assembly can be dismounted, mounted and replaced more conveniently. Further provided is an inflatable body.

Description

A combined pressure relief valve and inflatable body

Technical field

The utility model relates to the field of valves, in particular to a combined pressure relief valve and an inflatable body.

Background technique

As the pace of life accelerates and work pressure increases, people need more leisure methods to increase the fun of life. For example, massage pools with massage and leisure functions enable people to relax more and enjoy life when bathing, so they are generally welcomed by people. Water skiing is a sport that requires the coordination of all parts of the body and has gradually become a very popular cross-sport for water relaxation and entertainment. Inflatable water skis are a type of water ski commonly used in water skiing. They are loved by water skiing enthusiasts because they are durable, easy to store, carry and transport. However, when inflatable products such as massage pools and inflatable water skis encounter an increase in gas temperature caused by sunlight exposure, etc., since the volume of the gas in the cavity remains unchanged, the number of molecules hitting the pool wall per unit time will increase. Therefore, the average force hitting the pool wall will also increase, and the gas pressure in the inner cavity of the inflatable product will increase, causing the appearance and life of the inflatable product to be affected.

In order to reduce the gas pressure in the inflatable cavity of the inflatable product, or to deflate the inflatable body to facilitate portability, a deflation valve will be installed on the inflatable product. The current deflation valve has the problem that the deflation component is inconvenient to assemble and disassemble, and it is inconvenient to replace after damage. .

Utility model content

The purpose of the utility model is to solve the problems of the current vent valve that the vent components are inconvenient to assemble and disassemble and are inconvenient to replace after being damaged. The utility model provides a combined pressure relief valve whose air relief components are easy to disassemble, assemble, and replace.

In order to solve the above technical problems, an embodiment of the present utility model discloses a combined pressure relief valve for a first object. The first object has a gas chamber. The combined pressure relief valve includes:

The valve body has a first channel, and the first channel is used to communicate with the gas chamber;

The valve core is disposed in the first channel, and the valve core can move relative to the first channel to switch between the first position and the second position; when the valve core is located at the first position, the first channel is in a connected state; the valve core is located at In the second position, the first channel is in a sealed state;

The pressure relief component is detachably connected to the valve body. When the pressure relief component is connected to the valve body, the valve core is stressed to the position of the valve body. In the first position; when the pressure relief component is separated from the valve body, the valve core loses the external force and is in the second position;

The pressure relief component includes a second channel and an elastic moving part. The second channel is connected to the outside world; the elastic moving part can move relative to the second channel to switch between the third position and the fourth position; the elastic moving part is located in the third position. when the elastic moving member is at the fourth position, the second channel and the first channel are disconnected;

Wherein, when the second channel and the first channel are connected, the gas chamber can be vented through the combined pressure relief valve.

Using the above technical solution, the pressure relief component is detachably connected to the valve body, making the pressure relief component more convenient to disassemble, assemble, and replace.

As a specific implementation, the elastic moving member can move forward relative to the second channel under the action of external force to be located in the third position; or, the elastic moving member can move reversely relative to the second channel under the action of external force to be located in the third position. Four positions.

As a specific implementation, the external force acting on the elastic moving member includes gas pressure in the gas chamber.

As a specific implementation, the valve body includes a snap-in portion, and the snap-in portion is disposed in the first channel; the pressure relief assembly includes a valve cover, one end of the valve cover along the axial direction is provided with a claw, and the valve cover is inserted into the first channel along the axial direction. channel, after the valve cover can rotate around its own axis, the claws can engage with the clamping portion in the axial direction to connect the valve cover with the valve body.

As a specific implementation, the other end of the valve cover along the axial direction is provided with an accommodation cavity, and the elastic moving member is arranged in the accommodation cavity; along the axial direction, the elastic moving member separates the accommodation cavity into a first cavity and a second cavity. Cavity, the valve cover is provided with a first through hole, the first cavity is connected to the first channel through the first through hole, and the second cavity is connected to the outside world;

The second channel includes an airway inlet and an airway outlet, and the airway outlet is connected with the second cavity; when the elastic moving member is located at the third position, the airway inlet is connected with the first cavity; when the elastic moving member is located at the fourth position , the airway inlet is connected with the second cavity.

As a specific implementation, the pressure relief assembly further includes a ventilation shaft disposed in the accommodation cavity, the ventilation shaft extends in the axial direction and penetrates the elastic moving member, and a second channel is provided on the ventilation shaft.

As a specific implementation manner, the ventilation shaft is made of metal.

As a specific embodiment, the valve cover also includes a mounting seat. Along the axial direction, one end of the mounting seat protrudes from the end surface connecting the accommodation cavity and the claw. The other end of the mounting seat extends into the accommodation cavity, and the ventilation shaft Connect to the other end of the mounting base;

After the claws are engaged with the engaging portion, one end of the mounting seat abuts the end of the valve core so that the valve core is located in the first position.

As a specific embodiment, when the elastic moving member is in the fourth position, the lower end surface of the elastic moving member is in contact with the upper end surface of the mounting base along the axial direction.

As a specific implementation, the pressure relief component also includes:

The bonnet is connected to the other end of the bonnet. The bonnet covers the second cavity in the axial direction. The bonnet and the bonnet are clamped in the axial direction. Elastic moving parts;

The support seat is located in the second cavity and connected to the elastic moving part;

The second elastic member, along the axial direction, one end of the second elastic member is in contact with the support seat, and the other end is in contact with the valve cap.

As a specific embodiment, the elastic moving member is provided with a positioning rod, the support base is provided with a positioning hole, and the positioning rod can pass through the positioning hole along the axial direction.

As a specific implementation, a plurality of second through holes are provided on the end surface of the valve cap, and the second cavity is connected to the outside world through the second through holes.

As a specific implementation, the valve core can move backward relative to the first channel under the action of external force to be in the first position; or the valve core can move forward relative to the first channel after losing external force to be in the second position.

As a specific implementation, the external force acting on the valve core includes the force exerted by the user and the extrusion force of the pressure relief component.

As a specific embodiment, the valve body includes a connecting part, which is arranged in the first channel, and the connecting part is connected to the inner wall of the first channel through the snap-in part; the valve core penetrates the connecting part in the axial direction and circumferentially , there is a gap between the valve core and the connecting part;

Combination pressure relief valves also include:

The valve core cap is snap-fitted with the end of the valve core passing through the connecting part;

One end of the first elastic member is in contact with the valve core cap, and the other end is in contact with the connecting portion.

As a specific implementation, it also includes a first sealing member provided on the valve core;

When the valve core is in the first position, the first seal is separated from one end of the first channel along the axial direction, so that the first channel is in a conductive state;

When the valve core is in the second position, the first sealing member is in contact with one end of the first channel along the axial direction, so that the first channel is in a sealed state.

As a specific implementation, the valve core includes:

The valve core rod penetrates the connecting part along the axial direction;

The snap-in end is provided at the end of the valve core rod passing through the connecting part. The snap-in end protrudes from the surface of the valve core rod in the circumferential direction; through the snap-in end, the valve core and the valve core cap are snap-connected;

The gap extends along the axial direction of the valve core rod for a certain distance until it penetrates the snap-on end, and the gap penetrates the valve core rod along the radial direction of the valve core rod.

As a specific embodiment, the valve core further includes at least two blocking blocks protruding from the surface of the valve core rod along the radial direction of the valve core rod, and each blocking block is arranged at intervals along the circumferential direction of the valve core rod;

The side wall of the connecting part is provided with a gap that extends in the axial direction and corresponds to each block, and the valve core is located in the second position. When, each block is located in the corresponding gap;

The valve core moves in the axial direction relative to the first channel, so that each block moves in the axial direction to separate from each relief gap, and the valve core can rotate in the circumferential direction, so that each block rotates in the axial direction to be in contact with the gap. The end faces of the connecting parts are engaged with each other, and the first channel is in a conductive state.

As a specific implementation, the end surface of the connecting part is provided with a locking groove corresponding to each locking block, and each locking block can be locked with the locking groove so that the valve core is located in the first position.

An inflatable body includes a gas chamber and the above combined pressure relief valve.

Description of drawings

Figure 1 shows a schematic diagram of the overall structure of the combined pressure relief valve according to the embodiment of the present utility model;

Figure 2 shows an exploded view of the combined pressure relief valve according to the embodiment of the present utility model;

Figure 3 shows a cross-sectional view of the combined pressure relief valve according to the embodiment of the present utility model;

Figure 4 shows a schematic structural diagram of the valve body according to the embodiment of the present invention;

Figure 5 shows the second structural schematic diagram of the valve body according to the embodiment of the present utility model;

Figure 6 shows a partial cross-sectional view of the combined pressure relief valve according to the embodiment of the present utility model;

Figure 7 shows a schematic structural diagram of the valve cover according to the embodiment of the present invention;

Figure 8 shows the second structural schematic diagram of the valve cover according to the embodiment of the present invention;

Figure 9 shows a schematic structural diagram of the valve core according to the embodiment of the present utility model;

Figure 10 shows a schematic structural diagram of the valve core cap according to the embodiment of the present invention;

Figure 11 shows a schematic assembly diagram of the valve core and the valve core cap according to the embodiment of the present invention;

In the picture:

1-valve body, 11-body, 111-first channel, 112-connection part, 1121-locking groove, 1122-gap, 113-locking part, 2-valve core assembly, 21-valve core, 211-Valve core end plate, 212-Valve core rod, 2121-Gap, 2122-Clamping end, 2123-First clamping side wall, 2124-Second clamping side wall, 213-Clamp block, 214-Installation Groove, 22-valve core cap, 221-clip hole, 2211-clip hole side wall, 23-first elastic member, 24-first seal, 3-pressure relief component, 31-valve cover, 311-capacity Cavity placement, 3111-grip, 312-clip cylinder, 3121-claw, 3122-hook groove, 3123-notch, 313-mounting seat, 3131-mounting hole, 314-first through hole, 315- First cavity, 316-second cavity, 32-ventilation shaft, 321-second channel, 3211-airway inlet, 3212-airway outlet, 33-elastic moving part, 331-positioning rod, 34-support seat , 35-second elastic member, 36-bonnet, 361-second through hole, 362-annular protrusion, 37-dust net, 38-dust cover, 41-second sealing ring, 42-third seal Circle, 43-connecting line.

Detailed ways

The implementation of the present invention is described below with specific examples. Those skilled in the art can easily understand other advantages and effects of the present invention from the content disclosed in this specification. Although the description of the present utility model will be introduced in conjunction with the preferred embodiments, this does not mean that the features of the utility model are limited to this embodiment. On the contrary, the purpose of introducing the utility model in conjunction with the embodiments is to cover other options or modifications that may be extended based on the claims of the utility model. In order to provide a thorough understanding of the present invention, the following description contains many specific details. The invention may also be implemented without these details. Furthermore, some specific details will be omitted from the description in order to avoid confusing or obscuring the focus of the present invention. It should be noted that, as long as there is no conflict, the embodiments and features of the embodiments of the present invention can be combined with each other.

It should be noted that in this specification, similar reference numerals and letters represent similar items in the following drawings. Therefore, once an item is defined in one drawing, it does not need to be referenced in subsequent drawings. for further definition and explanation.

In the description of this embodiment, it should be noted that the orientation or positional relationship indicated by the terms "upper", "lower", "inner", "bottom", etc. is based on the orientation or positional relationship shown in the drawings, or The orientation or positional relationship in which the utility model product is customarily placed during use is only for the convenience of describing the utility model and simplifying the description, and does not indicate or imply that the device or component referred to must have a specific orientation, be constructed in a specific orientation, and operation, therefore it cannot be construed as a limitation of the present invention.

The terms "first", "second", etc. are used for descriptive purposes only and are not to be understood as indicating or implying relative importance.

In the description of this embodiment, it should also be noted that, unless otherwise clearly stated and limited, the terms "set", "connected" and "connected" should be understood in a broad sense. For example, it can be a fixed connection or a fixed connection. Detachable connection, or integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be an internal connection between two components. For those of ordinary skill in the art, the specific meanings of the above terms in this embodiment can be understood in specific situations.

In order to make the purpose, technical solutions and advantages of the present utility model clearer, the embodiments of the present utility model will be further described in detail below with reference to the accompanying drawings.

An embodiment of the present application discloses a combined pressure relief valve, used for a first object (not shown in the figure), and the first object includes a gas chamber. Illustratively, the first object is an inflatable body, such as a massage pool, an inflatable water ski, or other similar inflatable products with a gas chamber. Referring to FIGS. 1 to 3 , the combined pressure relief valve includes a valve body 1 , a valve core assembly 2 and a pressure relief assembly 3 . The valve core assembly includes a valve core 21 . Further, a first channel 111 is provided in the valve body 1 , and the first channel 111 is used to communicate with the gas chamber.

The valve core assembly 2 includes a valve core 21 which is movably disposed in the first channel 111 of the valve body 1 and can move relative to the first channel 111 to switch between the first position and the second position. When the valve core 21 is in the first position, the first channel 111 can communicate with the outside world, that is, the first ventilation path is in a conducting state; when the valve core 21 is in the second position, the first channel 111 is in a sealed state, that is, the first ventilation path is in a sealed state. The path is sealed.

Referring to Figure 3, the pressure relief assembly 3 is detachably connected to the valve body 1. When the pressure relief assembly 3 is connected to the valve body 1, the valve core 21 is forced to be in the first position. Specifically, the pressure relief assembly 3 It abuts the valve core 21 so that the valve core 21 is in the first position. When the pressure relief component 3 is separated from the valve body 1, the valve core 21 loses the external force and is located in the second position. That is to say, after the pressure relief component 3 is engaged with the valve body 1, the pressure relief component 3 acts on the valve core 21, so that the valve core 21 is always in the first position, and the first ventilation path is in a conducting state.

Continuing to refer to FIG. 3 , a second channel 321 is provided in the pressure relief component 3 , and the second channel 321 is connected to the outside world. The pressure relief assembly 3 also includes an elastic moving member 33, which can move relative to the second channel 321 along the first direction (shown in the Switch between position and fourth position. When the elastic moving member 33 is located at the third position, the second channel 321 is connected with the first channel 111; when the elastic moving member 33 is located at the fourth position, the second channel 321 is disconnected from the first channel 111, that is, the second ventilation The path is sealed. The external force acting on the elastic moving member includes the gas pressure in the gas chamber. Specifically, since the first ventilation path is in a conductive state, the gas in the gas chamber is introduced through the first ventilation path and interacts with the elastic moving member 33 along the first ventilation path. The lower end surfaces of the direction are in contact (the gas flow path is shown in the gas flow arrow group A in Figure 3). When the gas pressure rises to a certain set value, the elastic moving member 33 can be pushed to move forward (as shown in Figure 3 As shown in direction F).

For example, the first ventilation path and the second ventilation path refer to the paths through which gas circulates in the valve body 1 and the pressure relief assembly 3 respectively. And, the first position and the third position can respectively be a certain position that makes the first channel 111 and the second channel 321 be in a conductive state, or can be a position that can respectively make the first channel 111 and the second channel 321 be in a conductive state. specific location range. In this embodiment, no limitation is made.

When both the first ventilation path and the second ventilation path are in a conductive state, the gas chamber can be vented through the combined pressure relief valve. Specifically, when the air pressure in the gas chamber increases due to some reasons such as temperature, the elastic moving member 33 is pushed to move to the third position in the forward direction (shown in the direction F in FIG. 3 ) relative to the second channel 321 under the gas pressure. , so that the second channel 321 is connected with the first channel 111, that is, the first ventilation path and the second ventilation path are in a conductive state. The gas in the gas chamber enters through the first ventilation path from the end of the valve body 1 that is connected with the gas chamber, enters the second ventilation path, flows through the second channel 321, and leads from the second channel 321 to the outside of the gas chamber. , realize the pressure relief of the gas chamber and prevent the increase in air pressure in the gas chamber from causing damage to the gas chamber.

Further, the valve core 21 can move in the opposite direction relative to the first channel 111 under the action of external force (as shown in the G direction in Figure 3) Move, that is, move toward the end of the first channel 111 that communicates with the gas chamber, so that the valve core 21 is in the first position and the first ventilation path is in a connected state. Or the valve core 21 can move in the positive direction (as shown in the F direction in Figure 3) relative to the first channel after losing the external force, that is, move towards the end of the first channel 111 away from the gas chamber, so as to be in the second position, so that the third A ventilation path is sealed to prevent gas in the gas chamber from escaping. For example, the external force acting on the valve core 21 includes the force exerted by the user and the squeezing force on the valve core 21 after the pressure relief assembly 3 is installed on the valve body 1 .

For example, when the pressure relief assembly 3 is separated from the valve body 1, the valve core 21 can be positioned in the second position through external force, thereby placing the first ventilation path in a conductive state, allowing the gas in the first object gas chamber to be discharged quickly. , making it easy to store or carry the first object.

The above technical solution can effectively relieve the pressure of the inflatable body, and the pressure relief component 3 is connected to the valve body 1 through snap-fitting, which can facilitate the disassembly, assembly and replacement of the pressure relief component 3 and improve the disassembly and assembly efficiency. When the pressure relief component 3 is separated from the valve body, the valve core can also connect the gas chamber to the outside world to realize gas circulation between the gas chamber and the outside world to meet the needs of scenarios such as rapid pressure relief.

Referring to Figure 3, a connection line 43 is provided between the pressure relief assembly 3 and the valve body 1. One end of the connection line 43 is connected to the pressure relief assembly 3, and the other end is connected to the valve body 1 to prevent the pressure relief assembly 3 from connecting with the valve body 1. Valve body 1 falls when separated.

Referring to FIGS. 4 and 5 , supplemented by FIG. 3 , the valve body 1 includes a body 11 , and the body 11 extends along a first direction, which is the axial direction of the valve body 1 . The first channel 111 extends along the first direction and is provided in the body 11 . The valve body 1 also includes a connecting part 112 and a clamping part 113. The connecting part 112 is an annular cylinder, is disposed in the first channel 111, and is coaxially arranged with the first channel 111. There are at least two latching portions 113 , and each latching portion 113 is circumferentially spaced on the outer wall of the connecting portion 112 . Specifically, one end of each latching portion 113 is connected to the outer wall of the connecting portion 112 , and the other end of each latching portion 113 is connected to the outer wall of the connecting portion 112 . Connected to the inner wall of the first channel 111. That is to say, the connecting portion 112 is tightly connected to the inner wall of the first channel 111 through each clamping portion 113 . The clamping part 113 is used for clamping with the pressure relief component 3 .

Referring to Figures 7 and 8, supplemented by Figures 3 and 6, the pressure relief assembly 3 includes a valve cover 31. The valve cover 31 is provided with an accommodating cavity 311 at one end along the first direction, and is provided with a clamping chamber 311 at the other end along the first direction. The connecting cylinder 312 has one end connected to the end surface of the accommodation cavity 311. The other end of the connecting cylinder 312 is provided with hook-shaped claws 3121, and the number of the claws 3121 is equal to that of the clamping portion 113. Correspondingly, each claw 3121 is arranged at intervals along the circumferential direction of the clamping cylinder 312 . Each claw 3121 includes a hook groove 3122 extending in the circumferential direction, and a notch 3123 is provided between adjacent claws 3121, through which the hook groove 3122 can be entered in the axial direction.

When the pressure relief assembly 3 is connected to the valve body 1 , the valve cover 31 is inserted into the first channel 111 along the first direction, and the clamping portion 113 passes through the notch 3123 between two adjacent claws 3121 and rises to the corresponding clamping position. The corresponding position of the hook groove 3122 of the claw 3121, and then after the valve cover 31 rotates around its own axis (that is, the circumferential direction of the clamping cylinder 312), the hook groove 3122 is relatively locked. The connecting portion 113 moves circumferentially, so that the engaging portion 113 slides into the corresponding hook groove 3122, that is, in the first direction, the engaging portion 113 is located in the hook groove 3122 of the claw 3121, which can prevent the valve cover 31 from moving along the first direction. direction to disengage the valve body 1, thereby connecting the pressure relief assembly 3 with the valve body 1.

Furthermore, the outer surface of the accommodation cavity 311 is provided with concave and convex patterns to form a gripping portion 3111. The gripping portion 3111 facilitates the user to grasp and rotate the valve cover 31 so that the valve cover 31 is engaged with or disengaged from the valve body 1.

Referring to FIG. 6 , the elastic moving member 33 is disposed in the accommodation cavity 311 , and the elastic moving member 33 is sealingly connected to the valve cover 31 along the circumferential edge. Along the first direction, the elastic moving member 33 divides the accommodation cavity of the valve cover 31 into a first cavity 315 and a second cavity 316 that are isolated from each other. The valve cover 31 is provided with a first through hole 314 (as shown in FIGS. 6 and 7 ) to connect the first cavity 315 to the first channel 111 and the second cavity 316 to communicate with the outside world. Specifically, the space size of the first cavity 315 and the second cavity 316 changes with the movement of the elastic moving member 33 along the first direction.

Referring to Figure 6, supplemented by Figures 2 and 3, further, the pressure relief assembly 3 further includes a ventilation shaft 32. The ventilation shaft 32 is disposed in the accommodation cavity 311. The ventilation shaft 32 extends along the first direction and penetrates the elastic moving member 33. extends into the second cavity 316 . The second channel 321 is provided on the ventilation shaft 32. The second channel 321 extends along the first direction and penetrates one end of the ventilation shaft 32. The second channel 321 includes an airway inlet 3211 and an airway outlet 3212. The airway inlet 3211 passes through it in the radial direction. The side wall of the air shaft 32; the air channel outlet 3212 is located on the end surface of the other end of the ventilation shaft 32 along the axial direction, and the air channel outlet 3212 is connected with the second cavity 316. When the elastic moving member 33 is located at the third position, the airway inlet 3211 is connected with the first cavity 315; when the elastic moving member 33 is located at the fourth position, the airway inlet 3211 is connected with the second cavity 316.

That is to say, the elastic moving member 33 can move upward (forward) or downward (reverse) along the first direction relative to the ventilation shaft 32 under the action of the air pressure of the gas chamber to be in the third position or the fourth position; elasticity When the moving member 33 is in the third position, the airway inlet 3211 is located in the first cavity 315 and communicates with the first cavity 315, that is, with the first channel 111. At this time, the first ventilation path and the second ventilation path If the paths are all connected, the gas in the gas chamber can be connected to the outside through the first ventilation path and the second ventilation path, thereby achieving the effect of deflating the gas chamber. When the elastic moving member 33 is in the fourth position, the airway inlet 3211 is located in the second cavity 316 (the state shown in Figure 6), the elastic moving member 33 is sealingly connected to the ventilation shaft 32, and the second channel 321 is connected to the first cavity. The channel 111 is isolated, that is, the second ventilation path is in a sealed state, and the gas chamber is isolated from the outside world, and gas leakage is stopped to maintain pressure.

Furthermore, the ventilation shaft 32 is made of metal, so that the ventilation shaft 32 has a certain smoothness and rigidity, which facilitates the relative sliding of the elastic moving member 33 and the ventilation shaft 32 . For example, the ventilation shaft 32 is made of stainless steel.

Referring to Figures 6 and 7, supplemented by Figure 3, the valve cover 31 is provided with a mounting seat 313. Along the first direction, one end of the mounting seat 313 protrudes from the end surface where the accommodation cavity 311 and the claw 3121 are connected. The other end of the mounting base 313 extends into the accommodation cavity 311, and a mounting hole 3131 is opened at the other end of the mounting base 313 (as shown in FIG. 7). One end of the ventilation shaft 32 passes It is connected with the mounting base 313 through the mounting hole. Exemplarily, the ventilation shaft 32 is threadedly connected to the mounting hole.

Referring to FIG. 3 , after the claw 3121 is engaged with the engaging portion 113 , along the first direction, one end of the mounting seat 313 protruding from the end surface of the accommodating cavity 311 (that is, the end close to the valve seat 1 ) and the valve core 21 The ends are in contact, pushing the valve core 21 to move in the reverse direction (as shown in the G direction in Figure 3), so that the valve core 21 is always in the first position, that is, the first ventilation path is always in a connected state.

Furthermore, a second sealing ring 41 is sleeved on the outer circumference of the clamping cylinder 312 , and the radial outer surface of the second sealing ring 41 is in contact with the inner wall of the first channel 111 to prevent leakage in the first channel 111 . The gas escapes from the connection between the valve cover 31 and the valve body 1. Illustratively, the second sealing ring 41 is an arc sealing ring. The arc sealing ring is easy to deform, has little impact from subsequent temperature changes, and has a good sealing effect. Further, in the first direction, a third sealing ring 42 is provided between the valve cover 31 and the valve body 1. For example, the third sealing ring 42 is a U-shaped silicone sealing ring, which is easy to deform and is not affected by temperature changes. Small, with better sealing effect.

The second sealing ring 41 and the third sealing ring 42 act simultaneously to form a double seal at the connection between the valve cover 31 and the valve body 1 to prevent air leakage. At the same time, due to the elastic effect of the third sealing ring 42 along the first direction, the valve cover 31 and the valve body 1 are more firmly connected after being snap-locked.

Furthermore, the elastic moving member 33 is made of soft rubber and is deformable, so that the gas in the gas chamber can push the elastic moving member 33 forward along the first direction (as shown in the F direction in Figures 3 and 6). A certain amount of room to move. For example, the surface of the elastic moving member 33 is uneven. For example, if it is set in a wavy shape, the uneven surface can provide more space for the movement of the elastic moving member 33 and facilitate the forward movement of the elastic moving member 33 over a larger distance in the first direction. , so that the cross-sectional area of the airway inlet 3211 of the second channel 321 located in the first cavity 315 is increased, so as to facilitate rapid pressure relief.

Referring to FIG. 6 , supplemented by FIG. 2 , the pressure relief assembly 3 also includes a valve cap 36 , a support seat 34 and a second elastic member 35 . The valve cap 36 is connected to the valve cover 31 , and the valve cap 36 covers the second cavity 316 along the first direction. And along the first direction, the edge of the elastic moving part 33 is clamped between the valve cap 36 and the valve cover 31 in the axial direction, so that the elastic moving part 33 closely fits the valve cover 31 along the circumferential direction, ensuring that the elastic moving part 33 and the valve cover 31. Exemplarily, the end surface of the valve cap 36 in contact with the elastic moving part 33 is provided with an annular protrusion 362 (as shown in the enlarged view in FIG. 6 ), and the annular protrusion 362 is in contact with the elastic moving part 33 to compress the elastic moving part. The component 33 increases the sealing between the elastic moving component 33 and the valve cover 31.

The support seat 34 and the second elastic member 35 are both located in the second cavity 316 , specifically, in the cavity enclosed by the valve cap 36 and the elastic moving member 33 . The support base 34 is connected to the elastic moving member 33 to ensure that the supporting base 34 can move together with the elastic moving member 33 . For example, the second elastic member 35 is sleeved on the support base 34. Along the first direction, one end of the second elastic member 35 abuts the support base 34, and the other end abuts the valve cap 36.

When the elastic moving member 33 is located at the fourth position, under the action of the second elastic member 35, the elastic moving member 33 moves along the first The lower end surface of the direction contacts the upper end surface of the mounting base 313 to seal the first cavity 315 and the second cavity 316 . The sealing at the contact point between the elastic moving member 33 and the end surface of the mounting seat 313, and the sealing at the connection point between the edge of the elastic moving member 33 and the valve cover 31, provide a double sealing effect to ensure that the first cavity 315 and the second cavity 316 sealing between them.

That is to say, the second sealing ring 41 and the third sealing ring 42, as well as the seal between the elastic movable member 33 and the mounting seat 313 and the valve cover 31, ensure that before the gas pressure in the gas chamber reaches the pressure relief value and pushes the elastic movable member 33 to move (that is, when the elastic movable member 33 is in the fourth position), the entire valve body 1 ensures good sealing performance, so that the gas chamber is not connected to the outside, thereby preventing gas leakage.

Furthermore, the setting of the pressure relief value of the valve body 1 can be adjusted by the second elastic member 35 , that is, the pressure relief value of the gas chamber can be set by adjusting the compression amount or elastic coefficient of the second elastic member 35 .

Continuing to refer to FIG. 6 , for example, the elastic moving member 33 is provided with a positioning rod 331 extending along the first direction, and the support base 34 is provided with a positioning hole corresponding to the positioning rod 331 . The positioning rod 331 can pass through the positioning hole to position the support base 34 and the elastic moving member 33 so that the supporting base 34 can reciprocate relative to the elastic moving member 33 without being displaced.

Further, a plurality of second through holes 361 are provided on one end surface of the valve cap 36 along the first direction. The second through holes 361 connect the second cavity 316 with the outside world and ensure the gas pressure in the second cavity 316. Stable, thus ensuring the stability of the pressure relief value. Specifically, the air channel outlet 3212 of the second channel 321 corresponds to one of the second through holes 361 (as shown in FIG. 6), so that after the second channel 321 is connected to the first through path, the gas in the gas chamber The gas can be discharged to the outside faster.

Continuing to refer to FIG. 6 and FIG. 2 , a dust-proof cover 38 is also included, which is connected to the end of the valve cap 36 along the first direction for dust-proofing the valve body 1 . For example, the dust-proof cover 38 and the valve cap 36 can be Use threaded connections and snap connections for connection. Furthermore, a dust-proof net 37 is provided between the dust-proof cover 38 and the valve cap 36 to improve the dust-proof effect.

Further, referring to Figure 9, the valve core 21 includes a valve core end plate 211 and a valve core rod 212. The valve core rod 212 is axially connected to one end surface of the valve core end plate 211. The valve core rod 212 and the valve core end plate 211 A mounting slot 214 is provided at the connection, and the mounting slot 214 is used to install a seal. The end of the valve core rod 212 is provided with a snap-on end 2122 protruding from the surface of the valve core rod 212 along the radial direction of the valve core rod 212 . The valve core rod 212 is provided with a gap 2121 that passes through the snap-in end 2122 in the radial direction of the valve core rod 212, and the gap 2121 extends a certain distance along the axial direction of the valve core rod 212. That is, the gap 2121 separates the snap-in terminal 2122 into The two parts spaced apart make the clamping end 2122 have a certain degree of elasticity. That is, the two parts of the snap-in terminal 2122 can be brought together in the radial direction or bounce apart within a certain range, so that the snap-in terminal 2122 can be inserted into a certain component and bounced apart, thereby being snap-connected with the component.

Referring to Figure 9, the two ends of the snap-in terminal 2122 that are parallel to the penetration direction of the gap are respectively provided with a first snap-in side wall 2123 and a second snap-in side wall 2124. The first snap-in side wall 2123 and the second snap-in side wall The walls 2124 are all flat, and the first clamping side The wall 2123, the second snapping side wall 2124 and the penetration direction of the gap are perpendicular to each other. That is, the first clamping side wall 2123 and the second clamping side wall 2124 respectively form a right-angled surface at both ends of the clamping end 2122 .

Referring to FIGS. 10 and 11 , the valve core assembly 2 further includes a valve core cap 22 for snapping with the valve core rod 212 . The valve core cap 22 includes a groove for accommodating the clamping end 2122 of the valve core rod 212. The bottom wall of the groove of the valve core cap 22 is provided with a clamping hole 221. The clamping end 2122 has a certain elasticity and can be It penetrates the clamping hole 221 and is accommodated in the groove of the valve core cap 22 so that the clamping end 2122 is engaged with the valve core cap 22 .

Illustratively, the snap-in hole 221 is an oblong hole. After the snap-in end 2122 is located in the groove of the valve core cap 22, the parts of the snap-in end 2122 located at both ends of the gap 2121 spring open, causing the valve core rod 212 to move in the circumferential direction. The outer surface is in contact with the side wall of the circular hole of the clamping hole 221 (as shown in Figure 11). The oblong hole includes mutually parallel clamping hole sidewalls 2211 in the length direction. The first clamping sidewall 2123 contacts the clamping hole sidewall 2211 to prevent the valve core rod 212 from being rotated relative to the valve core cap 22 in the circumferential direction. Turn. In the first direction, the second clamping side wall 2124 is in contact with the outer wall of the groove, and the end surface of the clamping end 2122 is in contact with the inner wall of the groove, so that the valve core rod 212 and the valve core cap 22 are in contact with each other. The position in the first direction (ie, the axial direction of the valve core rod 212) is fixed. With this arrangement, the valve core rod 212 and the valve core cap 22 can be firmly engaged, so that the valve core rod 212 and the valve core cap 22 can move together, for example, simultaneously move in the first direction and rotate the valve core cap 22 in the circumferential direction. When, the valve core rod 212 can be driven to rotate.

Referring to FIGS. 2 and 3 , the valve core assembly 2 further includes a first elastic member 23 for elastically connecting the valve core rod 212 to the connecting portion 112 . Specifically, the valve core rod 212 passes through the connecting portion 112 along the first direction, and the snap-in end 2122 passes through the connection portion 112 to snap into the valve core cap 22 . In a specific implementation, the first elastic member 23 is sleeved on the valve core rod 212 and is located between the valve core cap 22 and the connecting part 112. One end of the first elastic member 23 is in contact with the valve core cap 22, and the other end is in contact with the valve core cap 22. It is in contact with the connecting portion 112 .

Referring to FIG. 3 , the valve core assembly 2 further includes a first seal 24 disposed in the installation groove 214 at the connection between the valve core rod 212 and the valve core end plate 211 . When an external force acts on the valve core 21 to position it in the first position, the first elastic member 23 is compressed, and the first sealing member 24 is separated from one end of the first channel 111 so that the first ventilation path is in a conductive state. After the external force acting on the valve core 21 is removed, the first elastic member 23 elastically recovers and can drive the valve core 21 to move to the second position. At this time, the first sealing member 24 is in contact with one end surface of the first channel 111 , so that the first ventilation path is in a sealed state. The external force acting on the valve core 21 includes the extrusion force of the pressure relief component 3. After the pressure relief component 3 is installed on the valve body 1, it squeezes the valve core 21 along the first direction and compresses the first elastic member 23, so that the valve core 21 is located in the first position, so that the first ventilation path is in a conductive state.

Referring to FIG. 9 , further, the valve core 21 further includes at least two blocking blocks 213 spaced apart along the circumferential direction of the valve core rod 212 . The blocking blocks 213 protrude from the valve core rod 212 . Referring to Figures 4 and 5, the side walls of the connecting portion 112 are provided with circumferentially spaced Each blocking block 213 has a clearance gap 1122 correspondingly, and each clearance gap 1122 passes through the block 213 in the radial direction and extends to a certain length in the axial direction. When the valve core 21 is in the second position, each block 213 is located in the corresponding clearance gap 1122 so that the first seal 24 can fit with the end surface of the first channel 111 .

Continuing to refer to FIG. 5 , in a specific embodiment, the end wall of the connecting portion 112 close to the end of the valve body 1 is provided with a locking groove 1121 corresponding to each clamping block 213 , and each clamping block 213 can engage with the clamping groove. 1121 phase card connection. When the valve core 21 is in the first position, the blocking blocks 213 of the valve core 21 are separated from each of the relief openings 1122, and each blocking block 213 can be engaged with the corresponding engaging groove 1121 by rotating the valve core 21. With this arrangement, the valve core 21 can be kept in the first position for a period of time without external pressure, so as to facilitate deflation of the gas chamber.

In another specific embodiment, the end of the connecting part 112 is not provided with a locking groove 1121 corresponding to each clamping block 213. After each clamping block 213 is rotated at a certain angle in the circumferential direction, it is directly locked with the end surface of the connecting part 112. catch.

That is to say, when the pressure relief component 3 is separated from the valve body 1 and there is no external force acting on the valve core 21, the valve core 21 can be in the second position under the elastic force of the first elastic member 23, that is, The first sealing member 24 is in close contact with the end of the first channel 111 so that the first ventilation path is in a sealed state. At this time, the gas chamber is not connected to the outside world. When an external force pushes the end of the valve core rod 212 to cause the valve core 21 to move toward one end of the valve body 1 in the first direction, the first seal 24 can be moved away from the end of the first channel 111 so that the first ventilation path is in the guiding position. In the open state, the gas chamber is connected to the outside world and can deflate the gas chamber. If it is necessary to continue deflating for a period of time, the valve core cap 22 can be rotated to drive the valve core 21 to rotate in the circumferential direction, so that each blocking block 213 rotates to the corresponding engaging groove 1121. Under the elastic force of the first elastic member 23 Under the action, each locking block 213 is locked with its corresponding locking groove 1121, so that the valve core 21 can be continuously maintained in the first position. Such an arrangement can realize rapid deflation of the gas chamber.

After the pressure relief assembly 3 and the valve body 1 are engaged with each other through the engaging portion 113 and the claw 3121, one end of the mounting seat 313 squeezes and pushes the valve core 21 to move in the first direction, so that the valve core 21 is located in the first position. The first ventilation path is always in a conductive state, and the gas in the gas chamber enters the first cavity 315 through the first ventilation path and the first through hole 314, and contacts the lower end surface of the elastic moving member 33 along the first direction.

When the gas pressure value in the gas chamber increases to the pressure relief value for some reasons, that is, when the gas pressure can overcome the elastic force of the second elastic member 35, the gas in the gas chamber will push the elastic moving member 33 forward in the first direction. Move (shown in direction F in Figure 6), the elastic moving member 33 is located in the third position. That is to say, the elastic moving member 33 moves and deforms toward the second cavity, so that the airway inlet 3211 of the second channel 321 is at least partially located in the first cavity 315, so that the second channel 321 is connected with the first cavity 315, that is, the second channel 321 is connected with the first cavity 315. The two ventilation paths are connected, and the gas in the gas chamber overflows through the first ventilation path and the second ventilation path to achieve pressure relief.

When the pressure value of the gas chamber is less than the pressure relief value, the elastic moving member 33 moves under the elastic force of the second elastic member 35. The relative ventilation shaft 32 moves in the opposite direction (shown in the G direction in Figure 6), the elastic moving member 33 is reset (that is, the elastic moving member 33 is located at the fourth position) and contacts and seals with the end face of the mounting base 313, and the airway inlet 3211 is located at the second position. In the cavity 316, the second channel 321 is not connected to the first cavity 315, that is, the second ventilation path is sealed, and the gas chamber is isolated from the outside world, and pressure relief stops.

The technical solution of this embodiment can realize automatic pressure relief and rapid pressure relief when the inflatable body is in normal use, and can quickly replace and disassemble the pressure relief components, making the operation convenient and efficient. At the same time, the pressure relief value is adjustable and suitable for different inflatable bodies.

Another embodiment of the present application also discloses an inflatable body, which includes a gas chamber and the above-mentioned combined pressure relief valve. The combined pressure relief valve is connected to the side wall of the gas chamber through the valve body 1, and the gas chamber is connected to the first gas chamber. Channel 111 is connected.

Although the present invention has been illustrated and described with reference to certain preferred embodiments of the present invention, those of ordinary skill in the art will understand that the above content is a further detailed description of the present invention in conjunction with specific embodiments. , it cannot be concluded that the specific implementation of the present utility model is limited to these descriptions. Those skilled in the art can make various changes in form and details, including making several simple deductions or substitutions, without departing from the spirit and scope of the present invention.

Claims

A combined pressure relief valve for a first object having a gas chamber, characterized in that the combined pressure relief valve includes:

A valve body having a first channel, the first channel being used to communicate with the gas chamber;

A valve core is elastically connected to the valve body, and the valve core can move relative to the first channel to switch between a first position and a second position; when the valve core is located in the first position, the valve core is The first channel is in a connected state; when the valve core is in the second position, the first channel is in a sealed state;

A pressure relief component is detachably connected to the valve body. When the pressure relief component is connected to the valve body, the valve core is forced to be in the first position; the pressure relief component When separated from the valve body, the valve core loses the effect of external force and is located in the second position;

The pressure relief component includes a second channel and an elastic moving member. The second channel is connected to the outside world; the elastic moving member can move relative to the second channel to switch between the third position and the fourth position. ; When the elastic moving member is in the third position, the second channel is connected with the first channel; when the elastic moving member is in the fourth position, the second channel and the first channel disconnect;

Wherein, when the second channel and the first channel are connected, the gas chamber can be vented through the combined pressure relief valve.
The combined pressure relief valve of claim 1, wherein the elastic moving member can move forward relative to the second channel to be in the third position under the action of external force; or, the elastic moving member can The component can move reversely relative to the second channel to be in the fourth position without external force.
The combined pressure relief valve of claim 2, wherein the external force acting on the elastic moving member includes gas pressure in the gas chamber.
The combined pressure relief valve according to claim 1, wherein the valve body includes a snap-in portion, and the snap-in portion is disposed in the first channel; the pressure relief component includes a valve cover, and the The valve cover is provided with a claw at one end along the axial direction, and the valve cover is inserted into the first channel along the axial direction. After the valve cover can rotate around its own axis, the claw and the engaging portion are arranged along the said first channel. The valve cover is axially engaged with the valve body.
The combined pressure relief valve according to claim 4, wherein the other end of the valve cover along the axial direction is provided with an accommodation cavity, and the elastic moving member is arranged in the accommodation cavity; along the axial direction, The elastic moving member divides the accommodation cavity into a first cavity and a second cavity. A first through hole is provided on the valve cover. The first cavity communicates with the first channel through the first through hole. Connected, the second cavity is connected with the outside world;

The second channel includes an airway inlet and an airway outlet, and the airway outlet is connected with the second cavity; the When the elastic moving member is in the third position, the airway inlet is connected to the first cavity; when the elastic moving member is in the fourth position, the airway inlet is connected to the second cavity. The bodies are connected.
The combined pressure relief valve of claim 5, wherein the pressure relief assembly further includes a ventilation shaft disposed in the accommodation cavity, the ventilation shaft extending in the axial direction and passing through the elastic moving member. , the second channel is provided on the ventilation shaft.
The combined pressure relief valve according to claim 6, wherein the ventilation shaft is made of metal.
The combined pressure relief valve of claim 6, wherein the valve cover further includes a mounting seat, and one end of the mounting seat protrudes from the accommodation cavity and is connected to the claw along the axial direction. On the end face, the other end of the mounting seat extends into the accommodation cavity, and the ventilation shaft is connected to the other end of the mounting seat;

After the claw is engaged with the engaging portion, the one end of the mounting seat abuts the end of the valve core, so that the valve core is located in the first position.
The combined pressure relief valve of claim 8, wherein when the elastic moving member is in the fourth position, the lower end surface of the elastic moving member is in contact with the upper end surface of the mounting seat along the axial direction. combine.
The combined pressure relief valve according to claim 8, wherein the pressure relief component further includes:

The valve cap is connected to the other end of the valve cover. The valve cap covers the second cavity in the axial direction. The valve cap and the valve cover clamp the elastic moving member in the axial direction. edge;

A support base is located in the second cavity and connected to the elastic moving part;

The second elastic member has one end in contact with the support seat and the other end in contact with the valve cap along the axial direction.
The combined pressure relief valve of claim 10, wherein the elastic moving member is provided with a positioning rod, the support seat is provided with a positioning hole, and the positioning rod can pass through the positioning hole in the axial direction. hole.
The combined pressure relief valve of claim 10, wherein a plurality of second through holes are provided on the end surface of the valve cap, and the second cavity is connected to the outside through the second through holes.
The combined pressure relief valve of claim 1, wherein the valve core can move in a reverse direction relative to the first channel under the action of an external force to be in the first position; or the valve core can move in a reverse direction under the action of an external force. After losing the external force, it moves forward relative to the first channel to be in the second position.
The combined pressure relief valve of claim 13, wherein the external force acting on the valve core includes the force exerted by the user and the extrusion force of the pressure relief component.
The combined pressure relief valve according to any one of claims 4 to 12, wherein the valve body further includes a connecting part, the connecting part is disposed in the first channel, and the connecting part passes through the The clamping part and the inner wall of the first channel connected; the valve core penetrates the connecting part in the axial direction, and a gap is provided between the valve core and the connecting part along the circumferential direction;

The combined pressure relief valve also includes:

The valve core cap is engaged with the end of the valve core passing through the connecting part;

One end of the first elastic member is in contact with the valve core cap, and the other end is in contact with the connecting part.
The combined pressure relief valve of claim 15, further comprising a first seal disposed on the valve core;

When the valve core is in the first position, the first seal is separated from the one end of the first channel in the axial direction, so that the first channel is in a conductive state;

When the valve core is in the second position, the first sealing member is in contact with the one end of the first channel along the axial direction, so that the first channel is in a sealed state.
The combined pressure relief valve of claim 15, wherein the valve core includes:

a valve core rod that penetrates the connecting portion in the axial direction;

The clamping end is provided at the end of the valve core rod passing through the connecting part, and the clamping end protrudes from the surface of the valve core rod in the circumferential direction; through the clamping end, the The valve core is engaged with the valve core cap;

The gap extends a certain distance along the axial direction of the valve core rod until it penetrates the snap-in end, and the gap penetrates the valve core rod in the radial direction of the valve core rod.
The combined pressure relief valve according to claim 17, wherein the valve core further includes at least two blocks protruding from the surface of the valve core rod along the radial direction of the valve core rod, each of the blocks protruding from the surface of the valve core rod. Blocks are arranged at circumferential intervals along the valve core rod;

The side wall of the connecting part is provided with a gap that extends in the axial direction and corresponds to each of the blocking blocks. When the valve core is in the second position, each of the blocking blocks is located in the corresponding shifting position. within the gap;

The valve core moves relative to the first channel in the axial direction, so that after each of the blocking blocks moves in the axial direction to separate from each of the relief gaps, the valve core can rotate in the circumferential direction. , so that each of the blocking blocks is rotated to engage with the end surface of the connecting portion along the axial direction, and the first channel is in a conductive state.
The combined pressure relief valve of claim 18, wherein the end surface of the connecting portion is provided with a locking groove corresponding to each of the locking blocks, and each of the locking blocks can engage with the locking recess. The grooves are engaged with each other so that the valve core is in the first position.
An inflatable body, characterized by comprising a gas chamber and the combined pressure relief valve according to any one of claims 1-19.