A pressure relief component, a pressure relief valve and an inflatable gas

Abstract

The present invention discloses a pressure relief assembly, including a valve cover having an accommodating chamber; an air leakage channel arranged in the accommodating chamber; an elastic movable member arranged in the accommodating chamber, the elastic movable member being able to move axially relative to the air leakage channel to open or close the air leakage channel; a valve cap connected to the valve cover, the valve cap and the valve cover clamping the elastic movable member axially; a pressure regulating elastic member, one end of the pressure regulating elastic member abutting against the elastic movable member and the other end abutting against the valve cap axially. The present invention can conveniently adjust the pressure relief pressure. The present invention also provides a pressure relief valve and an inflatable body.

Description

Technical Field

[0001] The invention relates to the field of valves, and in particular to a pressure relief component, a pressure relief valve and an inflatable body. Background Art

[0002] As the pace of life accelerates and work pressure increases, people need more ways to relax and enjoy life. For example, massage pools with massage and leisure functions allow people to relax more and enjoy life while bathing, which is widely welcomed by people. As well as water skiing, which is a sport that requires the coordination of all parts of the body, it 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 of their durability, easy storage, carrying and transportation. However, inflatable products such as massage pools and inflatable water skis, when the gas temperature rises due to reasons such as sun exposure, the number of molecules hitting the pool wall per unit time will increase due to the unchanged gas volume in the cavity, so the average force hitting the pool wall will also increase, and the gas pressure in the inner cavity of the inflatable product will increase, resulting in the appearance and life of the inflatable product being affected.

[0003] In order to reduce the gas pressure in the inflation cavity of the inflatable product or to deflate the inflatable gas for easy carrying, a pressure relief valve is provided on the inflatable product. However, the pressure relief component of the current pressure relief valve has the problem of inconvenient adjustment of the pressure relief value. Summary of the invention

[0004] The purpose of the present invention is to solve the problem that the pressure relief value of the current pressure relief valve pressure relief component is inconvenient to adjust. The present invention provides a pressure relief component that can conveniently adjust the pressure relief value.

[0005] In order to solve the above technical problems, the embodiment of the present invention discloses a pressure relief assembly, comprising:

[0006] A valve cover having an accommodating cavity;

[0007] An air release channel is arranged in the accommodating cavity;

[0008] An elastic moving member is disposed in the accommodating cavity, and the elastic moving member can move axially relative to the air leakage channel to open or close the air leakage channel;

[0009] The valve bonnet and the valve cover are connected, and the valve bonnet and the valve cover clamp the elastic moving part along the axial direction;

[0010] The pressure regulating elastic member has one end abutting against the elastic movable member along the axial direction, and the other end abutting against the valve cap.

[0011] By adopting the above technical solution, since the movement of the elastic movable part relative to the air release channel can open or close the air release channel, and the pressure-regulating elastic part abuts against the elastic movable part, the movement of the elastic movable part needs to overcome the elastic force of the pressure-regulating elastic part. Therefore, the pressure relief value of the pressure relief assembly can be adjusted by adjusting the elastic force of the pressure-regulating elastic part, that is, the pressure relief value can be conveniently adjusted by adjusting the compression amount or elastic coefficient of the pressure-regulating elastic part.

[0012] As a specific implementation, along the axial direction, the elastic moving member divides the accommodating cavity into a first cavity and a second cavity, and the second cavity is connected to the outside;

[0013] The air leakage channel includes an air passage inlet and an air passage outlet, and the air passage outlet is connected to the second cavity; when the elastic movable member moves relative to the air leakage channel so that the air passage inlet is connected to the first cavity, the air leakage channel is opened; when the air passage inlet is connected to the second cavity, the air leakage channel is closed.

[0014] As a specific implementation, it also includes a ventilation shaft, which extends axially and penetrates the elastic movable member, and has a gas leakage channel on the ventilation shaft.

[0015] As a specific implementation, the ventilation shaft is made of metal.

[0016] As a specific implementation, the valve cover further includes a mounting seat, one end of which extends into the accommodating cavity along the axial direction, and the ventilation shaft is connected to one end of the mounting seat.

[0017] As a specific implementation, a first through hole is provided on the valve cover, the first through hole is circumferentially arranged around the mounting seat, and the first through hole is communicated with the first cavity.

[0018] As a specific implementation, a plurality of second through holes are arranged on the end surface of the valve cap, and the second cavity is connected with the outside through the second through holes.

[0019] As a specific implementation, it also includes a support seat, which is located in the second cavity and connected to the elastic movable member, and one end of the pressure-adjusting elastic member abuts against the support seat.

[0020] Another embodiment of the present invention further discloses a pressure relief valve, comprising:

[0021] A valve body, wherein the valve body has an air outlet passage extending in the axial direction, and the air outlet passage is connected to the first cavity;

[0022] As a specific implementation, the pressure relief assembly is detachably connected to the valve body;

[0023] Among them, after the pressure relief component is connected to the valve body, the air outlet channel is in a connected state.

[0024] By adopting the above technical solution, the pressure relief component is connected to the valve body in a detachable manner, so that the pressure relief component can be disassembled, assembled and replaced more conveniently.

[0025] As a specific implementation, the valve body includes a clamping portion, a claw is provided at one end of the valve cover, the valve cover is axially inserted into the valve body, and after the valve cover can rotate around its own axis, the claw is axially clamped with the clamping portion.

[0026] As a specific embodiment, the pressure relief valve is used for a first object, and the first object has a gas chamber.

[0027] The gas outlet passage of the valve body is used to communicate with the gas chamber;

[0028] The pressure relief valve also includes a valve core, which is arranged in the air outlet passage, and the valve core can move relative to the air outlet passage to switch between a first position and a second position; when the valve core is located at the first position, the air outlet passage is in a connected state; when the valve core is located at the second position, the air outlet passage is in a sealed state;

[0029] The pressure relief assembly is detachably connected to the valve body. When the pressure relief assembly is connected to the valve body, the valve core is forced to be located at the first position; when the pressure relief assembly is separated from the valve body, the valve core loses the external force and is located at the second position.

[0030] The air leakage channel is connected to the outside; the elastic movable member can move relative to the air leakage channel to switch between the third position and the fourth position; when the elastic movable member is in the third position, the air leakage channel is connected to the air outlet channel; when the elastic movable member is in the fourth position, the air leakage channel and the air outlet channel are disconnected;

[0031] When the air release channel and the air outlet channel are connected, the gas chamber can be released through the pressure relief valve.

[0032] As a specific implementation, the elastic movable member can move forward relative to the air leakage channel under the action of external force to be located at the third position; or, the elastic movable member can move backward relative to the air leakage channel to be located at the fourth position when the external force is lost.

[0033] As a specific implementation, the external force acting on the elastic moving member includes the gas pressure in the gas chamber.

[0034] As a specific embodiment, the clamping portion is arranged in the air outlet channel; the pressure relief assembly includes a valve cover, and a claw is arranged at one end of the valve cover along the axial direction. The valve cover is inserted into the air outlet channel along the axial direction. After the valve cover can rotate around its own axis, the claw can be axially clamped with the clamping portion to connect the valve cover to the valve body.

[0035] As a specific implementation, the first cavity is connected to the air outlet channel through the first through hole;

[0036] When the elastic movable member is located at the third position, the airway entrance is communicated with the first cavity; when the elastic movable member is located at the fourth position, the airway entrance is communicated with the second cavity.

[0037] As a specific embodiment, the valve cover also includes a mounting seat, and along the axial direction, the other end of the mounting seat protrudes from the end surface where the accommodating cavity and the claw are connected. After the claw is engaged with the clamping portion, the other end of the mounting seat abuts against the end of the valve core to place the valve core in the first position.

[0038] As a specific implementation, when the elastic movable member is located at the fourth position, along the axial direction, the lower end surface of the elastic movable member is in contact with the upper end surface of the mounting seat.

[0039] As a specific implementation, a positioning rod is provided on the elastic movable member, a positioning hole is provided on the support seat, and the positioning rod can pass through the positioning hole along the axial direction.

[0040] As a specific implementation, the valve core can move in the opposite direction relative to the air outlet passage under the action of external force to be in the first position; or the valve core can move forward relative to the air outlet passage after the external force is lost to be in the second position.

[0041] As a specific implementation, the external force acting on the valve core includes the force applied by the user and the squeezing force of the pressure relief assembly.

[0042] As a specific embodiment, the valve body includes a connecting portion, which is arranged in the air outlet channel and connected to the inner wall of the air outlet channel through a clamping portion; the valve core penetrates the connecting portion along the axial direction, and a gap is arranged between the valve core and the connecting portion along the circumferential direction;

[0043] The pressure relief valve also includes:

[0044] A valve core cap is clamped with the end of the valve core passing through the connecting portion;

[0045] The valve core elastic member has one end abutting against the valve core cap and the other end abutting against the connecting portion.

[0046] As a specific embodiment, it also includes a first sealing member, which is arranged on the valve core;

[0047] When the valve core is located at the first position, the first sealing member is separated from one end of the air outlet channel in the axial direction, so that the air outlet channel is in a conducting state;

[0048] When the valve core is located at the second position, the first sealing member fits against one end of the air outlet channel along the axial direction, so that the air outlet channel is in a sealed state.

[0049] As a specific implementation, the valve core includes:

[0050] A valve core rod, the valve core rod axially passing through the connecting portion;

[0051] A clamping end is arranged at the end of the valve core rod passing through the connecting portion, and the clamping end protrudes from the surface of the valve core rod along the circumferential direction; the valve core is clamped with the valve core cap through the clamping end;

[0052] The notch extends a certain distance along the axial direction of the valve core rod until it penetrates the clamping end, and the notch penetrates the valve core rod along the radial direction of the valve core rod.

[0053] As a specific embodiment, the valve core further comprises at least two clamping blocks protruding from the surface of the valve core rod in the radial direction of the valve core rod, and each clamping block is arranged at intervals along the circumference of the valve core rod;

[0054] The side wall of the connecting portion is provided with a clearance notch extending in the axial direction and corresponding to each clamping block, and when the valve core is located at the second position, each clamping block is located in the corresponding clearance notch;

[0055] The valve core moves axially relative to the air outlet channel to make each block move axially to separate from each clearance notch, and then the valve core can rotate circumferentially to make each block rotate to axially engage with the end face of the connecting part, and the air outlet channel is in a conducting state.

[0056] As a specific implementation, the end surface of the connecting portion is provided with a clamping groove corresponding to each clamping block, and each clamping block can be clamped with the clamping groove to make the valve core located in the first position.

[0057] Another embodiment of the present invention further discloses an inflatable body, including a gas chamber and the above-mentioned pressure relief valve, wherein the gas chamber is connected to a gas outlet channel. BRIEF DESCRIPTION OF THE DRAWINGS

[0058] Figure 1 A schematic diagram showing the overall structure of a pressure relief valve according to an embodiment of the present invention is shown;

[0059] Figure 2 An exploded view of a pressure relief valve according to an embodiment of the present invention is shown;

[0060] Figure 3 A cross-sectional view showing a pressure relief valve according to an embodiment of the present invention;

[0061] Figure 4 The structure of the valve body of the embodiment of the present invention is shown in FIG. Figure 1 ;

[0062] Figure 5 The structure of the valve body of the embodiment of the present invention is shown in FIG. Figure 2 ;

[0063] Figure 6 A partial cross-sectional view of a pressure relief valve according to an embodiment of the present invention is shown;

[0064] Figure 7 The structure diagram of the valve cover of the embodiment of the present invention is shown as follows Figure 1 ;

[0065] Figure 8 The structure diagram of the valve cover of the embodiment of the present invention is shown as follows Figure 2 ;

[0066] Fig. 9 A schematic diagram showing the structure of a valve core according to an embodiment of the present invention is shown;

[0067] Fig.10 A schematic diagram showing the structure of a valve core cap according to an embodiment of the present invention is shown;

[0068] Fig.11 A schematic diagram showing the assembly of a valve core and a valve core cap according to an embodiment of the present invention is shown;

[0069] In the figure:

[0070] 1-valve body, 11-body, 111-air outlet channel, 112-connecting part, 1121-clamping groove, 1122-giving notch, 113-clamping part, 2-valve core assembly, 21-valve core, 211-valve core end plate, 212-valve core rod, 2121-notch, 2122-clamping end, 2123-first clamping side wall, 2124-second clamping side wall, 213-block, 214-installation groove, 22-valve core cap, 221-clamping hole, 2211-clamping hole side wall, 23-valve core elastic member, 24-first sealing member, 3-pressure relief assembly, 31-valve cover, 311-accommodating chamber, 3111- Gripping part, 312-clamping column, 3121-claw, 3122-hook groove, 3123-slot, 313-mounting seat, 3131-mounting hole, 314-first through hole, 315-first cavity, 316-second cavity, 32-vent shaft, 321-air leakage channel, 3211-airway inlet, 3212-airway outlet, 33-elastic moving part, 331-positioning rod, 34-support seat, 35-pressure regulating elastic part, 36-valve cap, 361-second through hole, 362-annular protrusion, 37-dustproof net, 38-dustproof cover, 41-second sealing ring, 42-third sealing ring, 43-connecting line. DETAILED DESCRIPTION

[0071] The following specific embodiments illustrate the implementation of the present invention, and those skilled in the art can easily understand other advantages and effects of the present invention from the contents disclosed in this specification. Although the description of the present invention will be introduced in conjunction with the preferred embodiment, this does not mean that the features of this invention are limited to this implementation. On the contrary, the purpose of introducing the invention in conjunction with the implementation is to cover other options or modifications that may extend based on the claims of the present invention. In order to provide a deep understanding of the present invention, the following description will include many specific details. The present invention can also be implemented without using these details. In addition, in order to avoid confusion or blurring the focus of the present invention, some specific details will be omitted in the description. It should be noted that the embodiments of the present invention and the features in the embodiments can be combined with each other without conflict.

[0072] It should be noted that in this specification, similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, it does not need to be further defined and explained in the subsequent drawings.

[0073] In the description of this embodiment, it should be noted that the terms "upper", "lower", "inner", "bottom", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, or are the orientations or positional relationships in which the inventive product is usually placed when used. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0074] The terms “first”, “second”, etc. are only used for distinguishing descriptions and should not be understood as indicating or implying relative importance.

[0075] In the description of this embodiment, it is also necessary to explain that, unless otherwise clearly specified and limited, the terms "set", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in this embodiment can be understood according to specific circumstances.

[0076] In order to make the objectives, technical solutions and advantages of the present invention more clear, the embodiments of the present invention will be further described in detail below with reference to the accompanying drawings.

[0077] The present application discloses a pressure relief valve for a first object (not shown in the figure), the first object comprising a gas chamber. For example, the first object is an inflatable object, such as a massage pool, an inflatable water ski or other similar inflatable products with a gas chamber. Figures 1 to 3 The pressure relief valve comprises a valve body 1, a valve core assembly 2 and a pressure relief assembly 3, wherein the valve core assembly comprises a valve core 21. Further, an air outlet channel 111 is provided in the valve body 1, and the air outlet channel 111 is used to communicate with the gas chamber.

[0078] The valve core assembly 2 includes a valve core 21, which is movably disposed in the air outlet passage 111 of the valve body 1 and can move relative to the air outlet passage 111 to switch between a first position and a second position. When the valve core 21 is in the first position, the air outlet passage 111 can be connected to the outside, that is, the first ventilation path is in a conducting state; when the valve core 21 is in the second position, the air outlet passage 111 is in a sealed state, that is, the first ventilation path is in a sealed state.

[0079] Reference 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 located in the first position. Specifically, the pressure relief assembly 3 abuts against the valve core 21, so that the valve core 21 is located in the first position. When the pressure relief assembly 3 is separated from the valve body 1, the valve core 21 loses the external force and is located in the second position. In other words, after the pressure relief assembly 3 is clamped with the valve body 1, the pressure relief assembly 3 acts on the valve core 21, so that the valve core 21 is always in the first position, so that the first ventilation path is in a conducting state.

[0080] Continue to refer to Figure 3 The pressure relief component 3 is provided with a gas relief channel 321, which is connected to the outside. The pressure relief component 3 also includes an elastic moving member 33, which can move along a first direction (such as Figure 1 and Figure 3 The elastic movable member 33 moves relative to the air leakage channel 321 to switch between the third position and the fourth position (as shown in the X direction). When the elastic movable member 33 is in the third position, the air leakage channel 321 is connected to the air outlet channel 111; when the elastic movable member 33 is in the fourth position, the air leakage channel 321 and the air outlet channel 111 are disconnected, that is, the second ventilation path is in a sealed state. The external force acting on the elastic movable member includes the gas pressure in the gas chamber. Specifically, since the first ventilation path is in a conducting state, the gas in the gas chamber is introduced into the gas chamber through the first ventilation path and contacts the lower end surface of the elastic movable member 33 along the first direction (the gas flow path is as shown in FIG. 1 ). Figure 3 As shown by the gas flow arrow group A in the middle, when the gas pressure rises to a certain set value, the elastic moving member 33 can be pushed to move forward (as shown in FIG. Figure 3 (as shown in the F direction).

[0081] Exemplarily, the first ventilation path and the second ventilation path refer to the paths through which the gas circulates in the valve body 1 and the pressure relief assembly 3, respectively. Also, the first position and the third position may be a determined position that enables the gas outlet channel and the gas relief channel 321 to be in a conducting state, or may be a specific position interval that enables the gas outlet channel 111 and the gas relief channel 321 to be in a conducting state, respectively. In this embodiment, no limitation is formed.

[0082] When the first ventilation path and the second ventilation path are both in the conducting state, the gas chamber can be deflated through the pressure relief valve. Specifically, when the gas pressure in the gas chamber increases due to temperature or other reasons, the elastic moving member 33 is pushed to move in the positive direction ( Figure 3 The valve body 1 is moved to the third position (as shown in the F direction) to connect the gas leakage channel 321 with the gas outlet channel 111, that is, the first ventilation path and the second ventilation path are in a conducting state. The gas in the gas chamber enters from the end of the valve body 1 connected to the gas chamber, flows through the first ventilation path, enters the second ventilation path, flows through the gas leakage channel 321, and flows to the outside of the gas chamber through the gas leakage channel 321, thereby depressurizing the gas chamber and preventing the gas chamber from being damaged by the increase of gas pressure in the gas chamber.

[0083] Furthermore, the valve core 21 can be reversed relative to the air outlet channel 111 under the action of external force (such as Figure 3 The valve core 21 moves in the direction (as shown in the G direction) of the outlet channel 111, that is, moves toward the end of the outlet channel 111 connected to the gas chamber, so that the valve core 21 is in the first position and the first ventilation path is in a connected state. Figure 3 The valve core 21 moves in the direction (as shown in FIG. 5 ), that is, moves toward the end of the gas outlet channel 111 away from the gas chamber, so as to be in the second position, so that the first ventilation path is sealed to prevent the gas in the gas chamber from escaping. Exemplarily, the external force acting on the valve core 21 includes the force applied by the user and the squeezing force of the pressure relief assembly 3 on the valve core 21 after being installed on the valve body 1.

[0084] Illustratively, when the pressure relief assembly 3 is separated from the valve body 1, the valve core 21 can be located in the second position by external force, thereby placing the first ventilation path in a conducting state, allowing the gas in the gas chamber of the first object to be quickly discharged, making it easier to store or carry the first object for transportation.

[0085] The above technical solution can effectively relieve the pressure of the inflatable gas, and the pressure relief component 3 is connected to the valve body 1 by a snap-on method, which can conveniently realize the disassembly and replacement of the pressure relief component 3, thereby improving the disassembly and assembly efficiency. When the pressure relief component 3 is separated from the valve body, the valve core can also conduct the gas chamber with the outside world, realizing the gas flow between the gas chamber and the outside world, so as to meet the needs of scenes such as rapid pressure relief.

[0086] Reference Figure 3 A connecting line 43 is provided between the pressure relief component 3 and the valve body 1 , one end of the connecting line 43 is connected to the pressure relief component 3 , and the other end is connected to the valve body 1 , so as to prevent the pressure relief component 3 from falling when being separated from the valve body 1 .

[0087] Reference Figure 4 and Figure 5 , supplemented by Figure 3 The valve body 1 includes a main body 11, which extends along a first direction, and the first direction is also the axial direction of the valve body 1. The air outlet channel 111 extends along the first direction and is arranged in the main body 11. The valve body 1 also includes a connecting portion 112 and a clamping portion 113. The connecting portion 112 is an annular cylinder, which is arranged in the air outlet channel 111 and is coaxially arranged with the air outlet channel 111. There are at least two clamping portions 113, and each clamping portion 113 is arranged on the outer side wall of the connecting portion 112 at intervals along the circumferential direction. Specifically, one end of each clamping portion 113 is connected to the outer side wall of the connecting portion 112, and the other end is connected to the inner side wall of the air outlet channel 111. In other words, the connecting portion 112 is fastened to the inner side wall of the air outlet channel 111 through each clamping portion 113. The clamping portion 113 is used to clamp with the pressure relief assembly 3.

[0088] Reference Figure 7 and Figure 8 , supplemented by Figure 3 and Figure 6 The pressure relief assembly 3 includes a valve cover 31, one end of the valve cover 31 along the first direction is provided with a receiving cavity 311, the other end along the first direction is provided with a clamping column 312, one end of the clamping column 312 is connected to the end surface of the receiving cavity 311, and the other end of the clamping column 312 is provided with a hook-shaped claw 3121, the number of the claw 3121 corresponds to the number of the clamping portion 113, and each claw 3121 is arranged at intervals along the circumference of the clamping column 312. Each claw 3121 includes a hook groove 3122 extending along the circumferential direction, and a notch 3123 is provided between adjacent claws 3121, and the notch 3123 can enter the hook groove 3122 in the axial direction.

[0089] When the pressure relief assembly 3 is connected to the valve body 1, the valve cover 31 is inserted into the air outlet channel 111 along the first direction, and the clamping portion 113 passes through the notch 3123 between two adjacent claws 3121 and rises to a position corresponding to the hook groove 3122 of the corresponding claw 3121. Then, the valve cover 31 rotates around its own axis (i.e., the circumferential direction of the clamping cylinder 312), and the hook groove 3122 moves circumferentially relative to the clamping portion 113, so that the clamping portion 113 slides into the corresponding hook groove 3122. That is, in the first direction, the clamping portion 113 is located in the hook groove 3122 of the claw 3121, which can prevent the valve cover 31 from slipping out of the valve body 1 along the first direction, thereby realizing the connection between the pressure relief assembly 3 and the valve body 1.

[0090] Furthermore, the outer surface of the accommodating cavity 311 is provided with concave-convex patterns to form a gripping portion 3111 . The gripping portion 3111 is convenient for the user to grip and rotate the valve cover 31 to engage or disengage the valve cover 31 from the valve body 1 .

[0091] Reference Figure 6 The elastic moving member 33 is disposed in the accommodating cavity 311, and the circumferential edge of the elastic moving member 33 is sealed and connected to the valve cover 31. Along the first direction, the elastic moving member 33 divides the accommodating 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 (such as Figure 6 and Figure 7 As shown in FIG. 1 , the first cavity 315 is connected to the air outlet channel 111, and the second cavity 316 is connected to the outside. 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.

[0092] Reference Figure 6 , supplemented by Figure 2 and Figure 3 Further, the pressure relief assembly 3 also includes a vent shaft 32, which is arranged in the accommodating cavity 311, and the vent shaft 32 extends along the first direction and penetrates the elastic movable member 33 to extend into the second cavity 316. The air release channel 321 is arranged on the vent shaft 32, and the air release channel 321 extends along the first direction and penetrates one end of the vent shaft 32. The air release channel 321 includes an airway inlet 3211 and an airway outlet 3212. The airway inlet 3211 penetrates the side wall of the air shaft 32 in the radial direction; the airway outlet 3212 is located at the end surface of the other end of the vent shaft 32 in the axial direction, and the airway outlet 3212 is connected to the second cavity 316. When the elastic movable member 33 is located in the third position, the airway inlet 3211 is connected to the first cavity 315; when the elastic movable member 33 is located in the fourth position, the airway inlet 3211 is connected to the second cavity 316.

[0093] That is to say, the elastic movable member 33 can move upward (forward) or downward (reverse) along the first direction relative to the ventilation shaft 32 under the action of the gas pressure in the gas chamber, so as to be located at the third position or the fourth position; when the elastic movable member 33 is located at the third position, the airway inlet 3211 is located at the first cavity 315, and is connected to the first cavity 315, that is, connected to the air outlet channel 111. At this time, the first ventilation path and the second ventilation path are both in a connected state, and the gas in the gas chamber can be connected to the outside world through the first ventilation path and the second ventilation path, so as to achieve the effect of degassing the gas chamber. When the elastic movable member 33 is located at the fourth position, the airway inlet 3211 is located at the second cavity 316 (such as Figure 6In the state shown), the elastic movable member 33 is sealed and connected with the ventilation shaft 32, and the air leakage channel 321 is isolated from the air outlet channel 111, that is, the second ventilation path is in a sealed state, and the gas chamber is isolated from the outside world, and the air leakage is stopped to maintain the pressure.

[0094] Furthermore, the ventilation shaft 32 is made of metal, so that the ventilation shaft 32 has a certain degree of smoothness and rigidity, which facilitates the relative sliding of the elastic moving member 33 and the ventilation shaft 32. Exemplarily, the ventilation shaft 32 is made of stainless steel.

[0095] Reference Figure 6 and Figure 7 , supplemented by Figure 3 A mounting seat 313 is disposed in the valve cover 31. One end of the mounting seat 313 extends into the accommodating cavity 311 along the first direction, and a mounting hole 3131 (such as Figure 7 As shown in FIG. 1 , one end of the ventilation shaft 32 is connected to the mounting seat 313 through the mounting hole. For example, the ventilation shaft 32 is threadedly connected to the mounting hole. The other end of the mounting seat 313 protrudes from the end surface where the accommodating cavity 311 and the claw 3121 are connected.

[0096] Reference Figure 3 After the claw 3121 is engaged with the engaging portion 113, along the first direction, the other end of the mounting seat 313 protruding from the end surface of the accommodating cavity 311 (i.e., the end close to the valve seat 1) abuts against the end of the valve core 21, pushing the valve core 21 in the reverse direction (such as Figure 3 The valve core 21 is moved in the direction (as shown in FIG. 5 ) so that the valve core 21 is always in the first position, that is, the first ventilation path is always in a connected state.

[0097] Furthermore, a second sealing ring 41 is sleeved on the outer circumference of the clamping cylinder 312, and the radial outer side surface of the second sealing ring 41 contacts the inner side wall of the gas outlet channel 111 to prevent the gas in the gas outlet channel 111 from overflowing from the connection between the valve cover 31 and the valve body 1. Exemplarily, the second sealing ring 41 is an arc sealing ring, which is easy to deform and has little influence on the subsequent temperature change, and has a good sealing effect. Further, in the first direction, a third sealing ring 42 is arranged between the valve cover 31 and the valve body 1. Exemplarily, the third sealing ring 42 is a U-shaped silicone sealing ring, which is easy to deform and has little influence on the subsequent temperature change, and has a better sealing effect.

[0098] The second sealing ring 41 and the third sealing ring 42 work together 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 clamped.

[0099] Furthermore, the elastic moving member 33 is made of soft rubber and is deformable, so that the gas in the gas chamber can move the elastic moving member 33 in the first direction (eg Figure 3 and Figure 6 By way of example, the surface of the elastic moving member 33 is uneven, such as being arranged in a wave shape, and the unevenness can provide more space for the movement of the elastic moving member 33, so as to facilitate the positive movement of the elastic moving member 33 in the first direction for a greater distance, so as to increase the cross-sectional area of ​​the airway inlet 3211 of the air release channel 321 in the first cavity 315, so as to facilitate rapid pressure relief.

[0100] Reference Figure 6 , supplemented by Figure 2 The pressure relief assembly 3 also includes a valve bonnet 36, a support seat 34 and a pressure regulating elastic member 35. The valve bonnet 36 is connected to the valve cover 31, and the valve bonnet 36 covers the second cavity 316 along the first direction. And along the first direction, the edge of the elastic movable member 33 is clamped between the valve bonnet 36 and the valve cover 31 in the axial direction, so that the elastic movable member 33 is tightly fitted with the valve cover 31 along the circumferential direction, ensuring the sealing between the elastic movable member 33 and the valve cover 31. Exemplarily, the end surface of the valve bonnet 36 that contacts the elastic movable member 33 is provided with an annular protrusion 362 (such as Figure 6 As shown in the enlarged view in the figure, the annular protrusion 362 contacts the elastic moving member 33 to compress the elastic moving member 33 and increase the sealing between the elastic moving member 33 and the valve cover 31.

[0101] The support seat 34 and the pressure regulating elastic member 35 are both located in the second cavity 316, specifically, in the cavity enclosed by the valve cap 36 and the elastic movable member 33. The support seat 34 is connected to the elastic movable member 33 to ensure that the support seat 34 can move with the elastic movable member 33. Exemplarily, the pressure regulating elastic member 35 is sleeved on the support seat 34, and along the first direction, one end of the pressure regulating elastic member 35 abuts against the support seat 34, and the other end abuts against the valve cap 36.

[0102] When the elastic moving member 33 is located at the fourth position, under the action of the pressure regulating elastic member 35, the lower end surface of the elastic moving member 33 along the first direction contacts the upper end surface of the mounting seat 313, thereby sealing the first cavity 315 and the second cavity 316. The seal at the point where the elastic moving member 33 contacts the end surface of the mounting seat 313, and the seal at the point where the edge of the elastic moving member 33 is connected to the valve cover 31, play a double sealing effect to ensure the sealing between the first cavity 315 and the second cavity 316.

[0103] 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.

[0104] Furthermore, the setting of the pressure relief value of the valve body 1 can be adjusted by the pressure regulating 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 pressure regulating elastic member 35 .

[0105] Continue to refer to Figure 6 For example, the elastic moving member 33 is provided with a positioning rod 331 extending along the first direction, and the support seat 34 is provided with a positioning hole corresponding to the positioning rod 331. The positioning rod 331 can pass through the positioning hole to realize the positioning of the support seat 34 and the elastic moving member 33, so that the support seat 34 reciprocates relative to the elastic moving member 33 without displacement.

[0106] Furthermore, a plurality of second through holes 361 are provided on one end surface of the valve cap 36 along the first direction, and the second through holes 361 connect the second cavity 316 with the outside, thereby ensuring the stability of the gas pressure in the second cavity 316, and thus ensuring the stability of the pressure relief value. Figure 6 As shown), after the gas leakage channel 321 is connected to the first path, the gas in the gas chamber can be discharged to the outside more quickly.

[0107] Continue to refer to Figure 6 and Figure 2 , further comprising a dust cover 38 connected to the end of the valve cap 36 along the first direction, for dust prevention of the valve body 1. For example, the dust cover 38 and the valve cap 36 can be connected by threaded connection and clamping. Further, a dust net 37 is provided between the dust cover 38 and the valve cap 36 to improve the dust prevention effect.

[0108] Further, refer to Fig. 9The 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. A mounting groove 214 is provided at the connection between the valve core rod 212 and the valve core end plate 211. The mounting groove 214 is used to install a seal. The end of the valve core rod 212 is provided with a clamping 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 notch 2121 that penetrates the clamping end 2122 along the radial direction of the valve core rod 212, and the notch 2121 extends a certain distance along the axial direction of the valve core rod 212, that is, the notch 2121 separates the clamping end 2122 into two spaced parts, so that the clamping end 2122 has a certain elasticity. That is, the two parts of the clamping end 2122 can be brought together or opened to a certain extent in the radial direction, so that the clamping end 2122 can be inserted into a component and opened to be clamped with the component.

[0109] Reference Fig. 9 The first clamping side wall 2123 and the second clamping side wall 2124 are respectively provided at two ends of the clamping terminal 2122 parallel to the through direction of the notch, and the first clamping side wall 2123 and the second clamping side wall 2124 are both planes, and the first clamping side wall 2123, the second clamping side wall 2124 and the through direction of the notch are perpendicular to each other. That is, the first clamping side wall 2123 and the second clamping side wall 2124 form a right angle surface at both side ends of the clamping terminal 2122.

[0110] Reference Fig.10 and Fig.11 The valve core assembly 2 further includes a valve core cap 22 for clamping with the valve core rod 212. The valve core cap 22 includes a groove for accommodating a clamping end 2122 of the valve core rod 212. A clamping hole 221 is provided on the bottom wall of the groove of the valve core cap 22. The clamping end 2122 has a certain elasticity and can pass through the clamping hole 221 and be accommodated in the groove of the valve core cap 22, so that the clamping end 2122 is clamped with the valve core cap 22.

[0111] For example, the clamping hole 221 is an oblong hole. After the clamping end 2122 is located in the groove of the valve core cap 22, the parts of the clamping end 2122 located at both ends of the notch 2121 are opened, so that the outer surface of the valve core rod 212 along the circumferential direction contacts the side wall of the circular hole of the clamping hole 221 (such as Fig.11As shown). The oblong hole includes mutually parallel clamping hole side walls 2211 in the length direction, and the first clamping side wall 2123 contacts the clamping hole side wall 2211 to prevent the valve core rod 212 from rotating relative to the valve core cap 22 in the circumferential direction. In the first direction, the second clamping side wall 2124 contacts the outer side wall of the groove, and the end face of the clamping end head 2122 contacts the inner side wall of the groove, so that the valve core rod 212 and the valve core cap 22 are fixed in the first direction (i.e., the axial direction of the valve core rod 212). In this way, the valve core rod 212 and the valve core cap 22 can be firmly clamped, so that the valve core rod 212 and the valve core cap 22 can move together, for example, when the valve core rod 212 is moved in the first direction at the same time, and when the valve core cap 22 is rotated in the circumferential direction, the valve core rod 212 can be driven to rotate.

[0112] Reference Figure 2 and Figure 3 The valve core assembly 2 further includes a valve core elastic member 23, which is used to elastically connect 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 clamping end 2122 passes through the connecting portion 112 and is clamped with the valve core cap 22. In a specific embodiment, the valve core elastic member 23 is sleeved on the valve core rod 212 and is located between the valve core cap 22 and the connecting portion 112, and one end of the valve core elastic member 23 abuts against the valve core cap 22, and the other end abuts against the connecting portion 112.

[0113] Reference Figure 3 , the valve core assembly 2 also includes a first sealing member 24, which is arranged 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 make it located in the first position, the valve core elastic member 23 is compressed, and the first sealing member 24 is separated from one end of the air outlet channel 111, so that the first ventilation path is in a conducting state. After the external force acting on the valve core 21 is removed, the valve core 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 fits with one end surface of the air outlet 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 assembly 3. After the pressure relief assembly 3 is installed on the valve body 1, it squeezes the valve core 21 along the first direction and compresses the valve core elastic member 23, so that the valve core 21 is located in the first position, so that the first ventilation path is in a conducting state.

[0114] Reference Fig. 9 Furthermore, the valve core 21 further includes at least two blocks 213 spaced apart along the circumference of the valve core rod 212, and the blocks 213 protrude from the valve core rod 212. Figure 4 and Figure 5The side wall of the connecting portion 112 is provided with circumferentially spaced gaps 1122 corresponding to the blocks 213, and each gap 1122 is radially continuous and extends 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 gap 1122, so that the first sealing member 24 can fit the end surface of the outlet passage 111.

[0115] Continue to refer to Figure 5 In a specific embodiment, a clamping groove 1121 corresponding to each clamping block 213 is provided on the end wall of the connecting portion 112 near one end of the valve body 1, and each clamping block 213 can be clamped with the clamping groove 1121. When the valve core 21 is in the first position, the clamping block 213 of the valve core 21 is separated from each clearance notch 1122, and each clamping block 213 can be clamped with the corresponding clamping groove 1121 by rotating the valve core 21. In this way, the valve core 21 can be kept in the first position for a period of time without external force, which is convenient for degassing the gas chamber.

[0116] In another specific embodiment, the end of the connection portion 112 is not provided with a clamping groove 1121 corresponding to each clamping block 213 , and each clamping block 213 is directly clamped with the end surface of the connection portion 112 after rotating a certain angle along the circumferential direction.

[0117] That is to say, when the pressure relief assembly 3 is separated from the valve body 1 and no external force acts on the valve core 21, the valve core 21 can be in the second position under the elastic force of the valve core elastic member 23, that is, the first sealing member 24 is tightly fitted with the end of the gas outlet channel 111, so that the first ventilation path is in a sealed state, and the gas chamber is not connected to the outside world. When an external force pushes the end of the valve core rod 212 to move the valve core 21 toward one end of the valve body 1 in the first direction, the first sealing member 24 can be moved away from the end of the gas outlet channel 111, so that the first ventilation path is in a conducting state, and the gas chamber is connected to the outside world, and the gas chamber can be deflated. If it is necessary to continue to deflate for a period of time, the valve core cap 22 can be rotated to drive the valve core 21 to rotate circumferentially, so that each clamping block 213 rotates to the corresponding clamping groove 1121. Under the elastic force of the valve core elastic member 23, each clamping block 213 is clamped with its corresponding clamping groove 1121, so that the valve core 21 can continue to maintain the first position. With this arrangement, the gas chamber can be deflated quickly.

[0118] After the pressure relief assembly 3 and the valve body 1 are clamped together by the clamping portion 113 and the claw 3121, one end of the mounting seat 313 squeezes and pushes the valve core 21 to move along the first direction, so that the valve core 21 is located in the first position, so that the first ventilation path is always in a conducting 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 movable member 33 along the first direction.

[0119] When the gas pressure in the gas chamber increases to the pressure relief value due to some reasons, that is, when the gas pressure can overcome the elastic force of the pressure regulating elastic member 35, the gas in the gas chamber will push the elastic moving member 33 to move forward along the first direction ( Figure 6 The elastic movable member 33 is located at the third position (as shown in the middle F direction). That is, the elastic movable member 33 moves and deforms toward the second cavity, so that the airway inlet 3211 of the air leakage channel 321 is at least partially located in the first cavity 315, so that the air leakage channel 321 is connected with the first cavity 315, that is, the second ventilation path is connected, and the gas in the gas chamber overflows through the first ventilation path and the second ventilation path to achieve pressure relief.

[0120] When the pressure value of the gas chamber is lower than the pressure relief value, the elastic moving member 33 moves in the opposite direction ( Figure 6 The elastic movable member 33 is reset (i.e., the elastic movable member 33 is located in the fourth position) and is in contact and sealed with the end face of the mounting seat 313. The airway inlet 3211 is located in the second cavity 316, and the air release channel 321 is not connected to the first cavity 315, i.e., the second ventilation path is sealed, so that the gas chamber is isolated from the outside and the pressure relief stops.

[0121] The technical solution of this embodiment can realize automatic and rapid pressure relief when the inflatable gas is in normal use, and can quickly replace and disassemble the pressure relief component, which is convenient to operate and efficient. At the same time, the pressure relief value can be adjusted and is suitable for different inflatable gases.

[0122] Another embodiment of the present application further discloses an inflatable body, including a gas chamber and the above-mentioned pressure relief valve, wherein the pressure relief valve is connected to the side wall of the gas chamber through a valve body 1 , and the gas chamber is connected to an air outlet channel 111 .

[0123] Although the present invention has been illustrated and described with reference to certain preferred embodiments of the present invention, it should be understood by those skilled in the art that the above is a further detailed description of the present invention in conjunction with specific embodiments, and it cannot be determined that the specific implementation of the present invention is limited to these descriptions. Those skilled in the art may 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

1. A pressure relief assembly, characterized in that: include: A valve cover having an accommodating cavity; A vent shaft having an air leakage passage thereon, wherein the air leakage passage is arranged in the accommodating cavity; An elastic movable member is disposed in the accommodating cavity, and the elastic movable member can move axially relative to the air leakage channel to open or close the air leakage channel; the ventilation shaft extends axially and passes through the elastic movable member; A valve cap connected to the valve cover, wherein the valve cap and the valve cover clamp the elastic moving part in the axial direction; A pressure regulating elastic member, wherein one end of the pressure regulating elastic member abuts against the elastic movable member and the other end abuts against the valve cap in the axial direction; Along the axial direction, the elastic moving member divides the accommodating cavity into a first cavity and a second cavity, and the second cavity is connected to the outside; The air leakage channel comprises an air passage inlet and an air passage outlet, and the air passage outlet is connected to the second cavity; the elastic moving member moves relative to the air leakage channel, so that when the air passage inlet is connected to the first cavity, the air leakage channel is opened; when the air passage inlet is connected to the second cavity, the air leakage channel is closed; The valve cover also includes a mounting seat, one end of which extends into the accommodating cavity in the axial direction, and the ventilation shaft is connected to the one end of the mounting seat; The valve cover is provided with a first through hole, the first through hole is circumferentially arranged around the mounting seat, and the first through hole is communicated with the first cavity.

2. The pressure relief assembly according to claim 1, characterized in that: The ventilation shaft is made of metal.

3. The pressure relief assembly according to claim 1, characterized in that: A plurality of second through holes are arranged on the end surface of the valve cap, and the second cavity is connected with the outside through the second through holes.

4. The pressure relief assembly according to claim 2 or 3, characterized in that: It also includes a support seat, which is located in the second cavity and connected to the elastic movable member, and one end of the pressure-adjusting elastic member abuts against the support seat.

5. A pressure relief valve, characterized in that: include: A valve body, wherein the valve body has an air outlet passage extending in the axial direction; The pressure relief assembly according to any one of claims 1 to 4, wherein the pressure relief assembly is detachably connected to the valve body; Wherein, the air outlet channel is communicated with the first cavity.

6. The pressure relief valve according to claim 5, characterized in that: The valve body comprises a clamping portion, one end of the valve cover is provided with a clamping claw, the valve cover is inserted into the valve body along the axial direction, and after the valve cover is able to rotate around its own axis, the clamping claw is clamped with the clamping portion along the axial direction.

7. An inflatable body, characterized in that: It comprises a gas chamber and a pressure relief valve as claimed in claim 5 or 6, wherein the gas chamber is communicated with the gas outlet channel.

Images