Plugging mechanism, valve element assembly and pneumatic emitter

Abstract

The utility model relates to a plugging mechanism, valve core subassembly and pneumatic launcher, the plugging mechanism includes the moving frame, rod member and jacking part, the moving frame includes the plug part and is connected with the sliding sleeve part of plug part, the sliding sleeve part is equipped with the sliding channel inside, the plug part is equipped with the vent hole, threaded hole and location hole, the vent hole is communicated with the sliding channel, and the threaded hole is communicated with the location hole. The threaded hole is communicated with the positioning hole, and the positioning hole is communicated with the sliding channel; the rod component comprises a rod part and a head part arranged at one end of the rod part, the rod part is matched with the positioning hole, and the rod part of the rod component is inserted into the sliding channel through the positioning hole; the jacking part is in threaded connection with the threaded hole and presses the rod component on the plug part; according to the blocking mechanism, centering of the rod component and the sliding channel can be guaranteed more easily, the centering precision of the rod component and the sliding channel can be improved, the assembling process is simpler and more efficient, and the blocking mechanism is not prone to being blocked or damaging a sealing ring in the moving process.

Description

Technical Field

[0001] This utility model relates to the technical field of glass-breaking ball launching devices, specifically to a sealing mechanism, a valve core assembly, and a pneumatic launcher. Background Technology

[0002] Curtain walls and roofs of high-rise buildings, as well as windows of various vehicles, are typically made of glass (such as tempered glass). In the event of a fire or other special circumstances, these can be removed using breaching tools. However, when glass is broken at close range, two problems arise: firstly, glass shards fly everywhere, easily injuring people near the broken glass; secondly, the environments on either side of the glass can differ significantly. For example, in a fire or other emergency, the environments inside and outside the glass can differ greatly, increasing the risk of a flashover when the glass breaks, causing even greater harm to those nearby. Therefore, in emergency rescue, emergency escape, and counter-terrorism operations involving glass in curtain walls, vehicle windows, and other structures, a high-hardness composite material-made high-strength glass-breaking ball (referred to as a glass-breaking ball) is often used. By throwing this glass-breaking ball, the glass can be broken at a greater distance, effectively mitigating the risks of close-range glass breaking.

[0003] A glass-breaking device (or glass-breaking equipment) is a specialized remote glass-breaking device used for throwing glass-breaking balls. It is widely used in firefighting and rescue operations. Currently, glass-breaking devices have diverse structures. For example, Chinese patent CN211893653U discloses a pneumatic glass-breaking ball launching mechanism, which can be mounted on a drone. This launching mechanism specifically includes a power chamber, a blocking mechanism, and a locking mechanism. The power chamber and the blocking mechanism are mutually compatible. The blocking mechanism is movably located at one end of the power chamber for blocking and opening the power chamber. The locking mechanism is mutually compatible with the blocking mechanism for locking and unlocking the blocking mechanism. When the locking mechanism locks the blocking mechanism, the power chamber is closed, and the air pressure inside the power chamber can rise to the pressure required to throw the glass-breaking ball. When it is necessary to throw the glass-breaking ball, the locking mechanism unlocks the blocking mechanism. Under the action of the air pressure inside the power chamber, the blocking mechanism moves and releases the high-pressure gas inside the power chamber. The high-pressure gas acts on the glass-breaking ball in the launching channel, thereby launching the glass-breaking ball through air pressure.

[0004] The launching mechanism disclosed in Chinese patent CN211893653U is an early-generation product. Its sealing mechanism includes a plug, a sliding sleeve connected to the plug, and a rod member connected to the plug. The rod member is located inside the sliding sleeve, and the plug has a vent hole, as shown in the attached diagram. Figure 1 As shown, the sealing mechanism is a one-piece molded component. However, in actual production, it was found that the one-piece molding of the sealing mechanism is difficult to manufacture, resulting in higher costs. Therefore, in actual products, the sealing mechanism is configured as a composite component, as shown in the attached figure. Figure 2As shown, specifically, the rod component in the sealing mechanism is machined separately. A threaded hole is machined at one end of the rod component, and a groove for a tightening tool is machined at the other end. The groove can be a slotted groove or a cross-shaped groove, etc. Simultaneously, a connecting hole adapted to the threaded hole is machined on the plug, so that the rod component can be fixed to the plug using fasteners such as bolts or screws adapted to the threaded hole to form the sealing mechanism, as shown in the attached figure. Figure 2 As shown, this design can significantly reduce the difficulty of processing and manufacturing, effectively lowering costs. In actual production, high-precision machining can ensure that the connecting hole and the sliding sleeve are coaxial. However, because the fasteners and the rod components are connected by threads, it is difficult to ensure that the rod components and the sliding sleeve are coaxial. This not only requires a significant amount of time to adjust the position of the rod components during assembly, resulting in low assembly efficiency, but also easily leads to jamming or even seizing of the sealing mechanism relative to the power chamber due to misalignment between the rod components and the sliding sleeve. Furthermore, because the ends of the rod components are machined with grooves, the edges of which are relatively sharp. During the movement of the sealing mechanism relative to the power chamber, the grooves at the ends of the rod components are very likely to damage the sealing rings inside the power chamber, significantly reducing their service life, which urgently needs to be addressed. Summary of the Invention

[0005] The first aspect of this utility model addresses the aforementioned problems by providing a sealing mechanism that not only simplifies and simplifies the assembly process but also makes it easier to achieve and ensure alignment, and reduces the likelihood of jamming or damage to the sealing ring. The main concept is as follows:

[0006] A sealing mechanism includes a movable frame, a rod component, and a clamping component. The movable frame includes a plug head and a sliding sleeve connected to the plug head. The sliding sleeve has a sliding channel. The plug head has a vent hole, a threaded hole, and a positioning hole. The vent hole is connected to the sliding channel, the threaded hole is connected to the positioning hole, and the positioning hole is connected to the sliding channel.

[0007] The rod component includes a rod portion and a head disposed at one end of the rod portion. The rod portion is adapted to the positioning hole, and the rod portion of the rod component is inserted into the sliding channel through the positioning hole.

[0008] The tightening component is threaded into the threaded hole and presses the rod component against the plug head. In this solution, by configuring the sealing mechanism to include a movable frame and a rod component, the movable frame and rod component can be processed and manufactured separately, which can effectively reduce processing difficulty and cost; by constructing a positioning hole in the plug head and connecting the positioning hole with the sliding channel, the coaxial effect of the positioning hole and the sliding channel can be easily achieved through machining, and it is also beneficial to achieve a higher precision coaxial effect; by configuring a rod part in the rod component and constructing the rod part as an adapter positioning hole, the rod part of the rod component is inserted into the sliding channel through the positioning hole. The positioning hole can constrain and position the rod part, and the alignment accuracy of the rod part and the positioning hole can be ensured through the cooperation of the rod part and the positioning hole, thereby more easily ensuring the coaxiality of the rod part and the sliding channel, and it is also beneficial to achieve a higher precision coaxial effect; by constructing a threaded hole in the plug head, the threaded hole is connected to the positioning hole, and an adapter is configured... The threaded hole clamping component allows it to be threaded into the threaded hole and presses against the head of the rod component, thus pressing the rod component against the plug head to fix it. This fixing method does not change the relative position of the rod component and the sliding channel, thus not affecting the alignment accuracy of the rod and the sliding channel. It also eliminates the need to machine grooves on the rod, effectively solving the problem that grooves easily damage the sealing ring in the power chamber, leading to a significant reduction in the sealing ring's service life. This design not only makes it easier to ensure the alignment of the rod component and the sliding channel but also improves their alignment accuracy. This makes the assembly process simpler and more efficient, and prevents the sealing mechanism from jamming or even becoming stuck during movement due to misalignment between the rod and the sliding channel. Furthermore, it is less likely to damage the sealing ring, ensuring its service life.

[0009] Preferably, the positioning hole and the sliding channel are coaxial. This helps to ensure that the rod and the sliding channel are perfectly aligned, making the movement of the sealing mechanism smoother and reducing resistance.

[0010] Preferably, the threaded hole and the positioning hole are coaxial. This not only makes machining easier, but also makes assembly and disassembly easier.

[0011] Preferably, the rod is a cylindrical rod, and the positioning hole is a circular hole, with the outer diameter of the rod being less than or equal to the inner diameter of the positioning hole. This facilitates high-precision alignment between the rod and the positioning part.

[0012] Preferably, the vent hole extends through both ends of the plug head. This allows for venting along the length of the sliding channel, resulting in less pressure loss of the high-pressure gas during venting and allowing the released high-pressure gas to directly act on the glass ball, thus enabling it to be thrown farther.

[0013] Preferably, the positioning hole is located at the center of the plug head, and the vent holes are evenly distributed along the circumference of the positioning hole. This ensures that the amount of high-pressure gas discharged from the end of the plug head is uniform, which is beneficial for better and more stable throwing of the glass ball.

[0014] Preferably, the movable frame is a one-piece molded component. This not only facilitates processing and molding but also provides higher structural strength, better meeting the requirements for high-pressure gas applications.

[0015] Preferably, the end of the rod opposite the head has a streamlined structure. This not only effectively reduces resistance, thereby reducing pressure loss of high-pressure gas, but also prevents damage to the sealing ring during movement, ensuring the service life of the sealing ring.

[0016] Preferably, the end of the rod opposite the head is constructed with a hemispherical structure.

[0017] Preferably, the outer side of the clamping component is provided with an external thread adapted to the threaded hole, and one end of the clamping component is provided with a tightening part adapted to a tightening tool.

[0018] Preferably, the tightening part is a straight groove, a cross-shaped groove, or an internal hexagonal groove.

[0019] Preferably, the tightening component is a set screw.

[0020] Preferably, the outer surface of the sliding sleeve is also provided with a groove to cooperate with the locking mechanism, thereby achieving the purpose of locking and unlocking the moving frame.

[0021] The second aspect of this utility model addresses the problem of ensuring throwing distance and number of throws by providing a valve core assembly, including a gas storage component and a sealing mechanism. The sealing mechanism is movably constrained by the gas storage component, and the front end of the gas storage component is configured to be inserted into a sliding channel. The gas storage component contains a gas chamber for containing gas and a guide channel adapted to the rod. The guide channel extends through the front end of the gas storage component and communicates with the gas chamber. A pressure ring is threadedly connected to the front end of the gas storage component. The pressure ring constrains a sealing ring adapted to the rod, and the sealing ring provides a sealing function when the rod is inserted into the exhaust channel. When the rod in the sealing mechanism is disengaged from the sealing ring, the vent hole communicates with the gas chamber; when the rod in the sealing mechanism is inserted into the sealing ring, the vent hole is not connected to the gas chamber. In this solution, by setting a sealing ring adapted to the rod at the front end of the gas storage component, the sealing ring can achieve a better sealing effect between the rod and the exhaust channel, preventing air leakage between the rod and the exhaust channel. This ensures both throwing distance and the number of throws. By configuring a pressure ring and threading the pressure ring to the front end of the gas storage component, the sealing ring can be effectively restricted and constrained to prevent it from falling off, and it is also easier to install and replace the sealing ring.

[0022] A pneumatic launcher includes the blocking mechanism or the valve core assembly.

[0023] Compared with the prior art, the sealing mechanism, valve core assembly and pneumatic launcher provided by this utility model can not only more easily ensure the alignment of the rod component and the sliding channel, but also improve the alignment accuracy of the rod component and the sliding channel. This not only makes the assembly process simpler and more efficient, but also makes the sealing mechanism less prone to jamming and damage to the sealing ring during movement. Attached Figure Description

[0024] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this utility model and should not be regarded as a limitation on the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0025] Figure 1 This is a schematic diagram of an existing sealing mechanism, in which the sealing mechanism is a one-piece molded component.

[0026] Figure 2 This is a schematic diagram of another sealing mechanism. The sealing mechanism in the figure uses a combination of components, and the rod component is fixed to the plug by fasteners.

[0027] Figure 3 This is a structural schematic diagram of a mobile frame provided in Embodiment 1 of this utility model.

[0028] Figure 4 for Figure 3 A sectional view.

[0029] Figure 5 This is a structural schematic diagram of a rod member provided in Embodiment 1 of this utility model.

[0030] Figure 6 This is a structural schematic diagram of a clamping component provided in Embodiment 1 of this utility model.

[0031] Figure 7 This is a schematic diagram of a sealing mechanism provided in Embodiment 1 of this utility model.

[0032] Figure 8 for Figure 7 A sectional view.

[0033] Figure 9 This is a partial structural diagram of a valve core assembly provided in Embodiment 2 of this utility model, in which the vent hole is blocked.

[0034] The markings in the diagram are as follows: Plug 11, Connecting hole 12, Sliding sleeve 13, Fastener 14, Groove 15; Sealing mechanism 2; Moving frame 3, Plug head 31, Vent hole 32, Threaded hole 33, Positioning hole 34, Sliding sleeve 35, Sliding channel 36, Slot 37; Rod component 4, Head 41, Rod 42, Streamlined structure 43; Tightening component 5, External thread 51, Tightening part 52; Gas storage component 6, Gas chamber 61, Guide channel 62, Sealing ring 63, Pressure ring 64. Detailed Implementation

[0035] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. The components of the embodiments of the present invention described and shown in the accompanying drawings can be arranged and designed in various different configurations. Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the present invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without inventive effort are within the scope of protection of the present invention.

[0036] Example 1

[0037] This embodiment provides a sealing mechanism 2 for a pneumatic launcher, including a movable frame 3, a rod member, and a clamping component 5. The movable frame 3 includes a plug head 4131 and a sliding sleeve 35 connected to the plug head 4131. The rod member includes a rod portion 42 and a head 41 disposed at one end of the rod portion 42. Figures 3-5 As shown, the movable frame 3 and the rod component are two separate parts, which allows the movable frame 3 and the rod component to be processed and manufactured separately, effectively reducing processing difficulty and cost.

[0038] In this embodiment, a sliding channel 36 is constructed within the sliding sleeve 35. In practice, the sliding channel 36 preferably adopts a cylindrical structure, such as... Figure 4 As shown. The cross-sectional shape of the sliding sleeve 35 can be determined according to actual needs. For example, the sliding sleeve 35 can preferably adopt a cylindrical structure, that is, the wall thickness of the sliding sleeve 35 can be the same along the circumferential direction, which is beneficial to occupy less assembly space in the pneumatic launcher; of course, in implementation, the wall thickness of the sliding sleeve 35 can vary along the length direction of the sliding sleeve 35 to meet the usage requirements of different occasions.

[0039] During implementation, the shape of the plug head 4131 can be determined according to actual needs. For example, Figure 3 and Figure 4As shown, the plug head 4131 can preferably be constructed as a cylindrical structure, with the sliding sleeve 35 connected to one end of the plug head 4131, and the outer diameter of the sliding sleeve 35 and the plug head 4131 can be the same, such as... Figure 3 and Figure 4 As shown, this facilitates rapid prototyping. The plug head 4131 has a vent hole 32, a threaded hole 33, and a positioning hole 34. The positioning hole 34 is located at the end of the plug head 4131 facing the sliding sleeve 35, as shown. Figure 4 As shown, the positioning hole 34 is connected to the sliding channel 36. The shape of the positioning hole 34 is adapted to the shape of the rod 42, and the shape of the rod 42 is adapted to the shape of the sliding channel 36 in the air storage component 6 inside the pneumatic launcher. In a preferred embodiment, the sliding channel 36 in the air storage component 6 inside the pneumatic launcher is usually a cylindrical channel. Therefore, the rod 42 can be a cylindrical rod adapted to it. Correspondingly, the positioning hole 34 is a circular hole adapted to the rod 42, such as... Figure 4 As shown. It can be understood that, in implementation, the positioning hole 34 can be a circular hole with a constant inner diameter, or it can be a stepped circular hole with two different inner diameters. In this case, one section of the hole can be adapted to the rod part 42, and the other section of the hole can be adapted to the head 41.

[0040] In implementation, the positioning hole 34 can preferably be constructed at the center of the plug head 4131, such as... Figure 4 As shown, the positioning hole 34 can be coaxial with the sliding channel 36. In practice, the coaxial effect of the positioning hole 34 and the sliding channel 36 can be easily achieved through machining, which is conducive to achieving a higher precision coaxial effect. This helps to ensure that the rod 42 and the sliding channel 36 are strictly aligned, making the movement of the sealing mechanism 2 smoother and with less resistance.

[0041] In implementation, the threaded hole 33 is constructed at the end of the plug head 4131 opposite to the sliding sleeve portion 35, such as Figure 3 and Figure 4 As shown, this allows for easier operation by mounting the rod member from a direction away from the sliding sleeve 35. The threaded hole 33 communicates with the positioning hole 34, and in practice, the inner diameter of the threaded hole 33 needs to be greater than or equal to the inner diameter of the positioning hole 34 to allow for mounting of the rod member via the threaded hole 33. Preferably, the threaded hole 33 can also be constructed at the center of the plug head 4131, such as... Figure 3 and Figure 4 As shown, the threaded hole 33 can be easily made coaxial with the positioning hole 34 through machining (or aligned, which will not be elaborated on later), and the coaxial effect can be effectively guaranteed, which not only makes it easier to process and form, but also makes it easier to assemble and disassemble.

[0042] In this embodiment, the vent 32 can penetrate one end of the plug head 4131 and communicate with the sliding channel 36, such as... Figure 3 and Figure 4 As shown, the other end of the vent 32 can penetrate through the side wall of the plug head 4131, or it can penetrate through the other end of the plug head 4131. For example, in this embodiment, as... Figure 3 and Figure 4 As shown, the vent 32 penetrates both ends of the plug head 4131, and the vent 32 can be constructed as a straight hole without bends, so as to exhaust gas along the length of the sliding channel 36. This not only makes the pressure loss of high-pressure gas during the exhaust process smaller, but also allows the exhaust high-pressure gas to act directly on the broken glass ball, which is beneficial to throwing the broken glass ball further.

[0043] In implementation, the cross-sectional shape of the vent 32 can be determined according to actual needs. Simultaneously, the plug head 4131 can be configured with one or more vent holes 32. In a preferred embodiment, the plug head 4131 can be configured with at least two vent holes 32, each vent hole 32 being evenly distributed along the circumference of the positioning hole 34, ensuring a uniform flow of high-pressure gas discharged from the end of the plug head 4131, thereby facilitating a better and more stable throwing of the glass ball. For example, in this embodiment, the plug head 4131 is constructed with three vent holes 32, which are evenly distributed along the circumference of the positioning hole 34. Figure 3 As shown.

[0044] In a more refined embodiment, the outer surface of the sliding sleeve 35 is further provided with a groove 37, such as... Figure 3 and Figure 4 As shown, this is so that it can cooperate with the locking mechanism inside the pneumatic launcher to achieve the purpose of locking and unlocking the moving frame 3.

[0045] In implementation, the mobile frame 3 can be a single, integrally molded component, such as... Figure 3 and Figure 4 As shown, it is not only easy to process and shape, but also has higher structural strength, which better meets the requirements of high-pressure gas use.

[0046] In this embodiment, the size of the head 41 in the rod member is larger than the size of the rod portion 42 in the rod member, and needs to be smaller than the inner diameter of the threaded hole 33, so that the head 41 in the rod member can be engaged in the threaded hole 33, such as... Figure 8 As shown. In implementation, the shape of the head 41 can be determined according to actual needs. For example, in this embodiment, the head 41 adopts a cylindrical structure, and the outer diameter of the head 41 is larger than the outer diameter of the rod 42 and smaller than the inner diameter of the threaded hole 33.

[0047] In implementation, the shape and size of the rod 42 are designed to fit the positioning hole 34. For example, in this embodiment, the rod 42 is a cylindrical rod. Figure 5As shown, the outer diameter of the rod 42 can be configured to be equal to the inner diameter of the positioning hole 34, so that during assembly, the rod 42 of the rod member can be inserted into the sliding channel 36 through the positioning hole 34, as shown. Figure 8 As shown, the high-precision centering effect is automatically achieved through the cooperation between the rod 42 and the positioning hole 34. In addition, during implementation, the outer diameter of the rod 42 can be constructed to be slightly smaller than the inner diameter of the positioning hole 34, so that during assembly, the rod 42 of the rod member can be inserted into the sliding channel 36 through the positioning hole 34, and the required centering accuracy can be achieved through the cooperation between the rod 42 and the positioning hole 34, without the need to repeatedly adjust the position of the rod member, making the assembly process very convenient and efficient.

[0048] In practice, the end of the rod 42 that faces away from the head 41 can be constructed as a streamlined structure 43, such as... Figure 5 As shown, this not only effectively reduces resistance, thereby reducing pressure loss of high-pressure gas, but also prevents damage to the sealing ring 63 during movement, ensuring its service life. In practice, there are various implementation methods; for example, the end of the rod 42 facing away from the head 41 can be constructed into a hemispherical structure, a semi-elliptical structure, or a bullet-shaped structure. As an example, such as... Figure 5 As shown, the end of the rod 42 opposite to the head 41 has a hemispherical structure.

[0049] In this embodiment, the function of the clamping member 5 is to press (or clamp) the rod member on the side away from the sliding sleeve 35. In implementation, the outer surface of the clamping member 5 is constructed with an external thread 51 that matches the threaded hole 33, such as... Figure 6 As shown, this allows the clamping component 5 to be threaded into the threaded hole 33, which not only facilitates installation but also makes it easy to disassemble and replace the rod component; at the same time, as Figure 6 As shown, one end of the tightening component 5 is also equipped with a tightening part 52 adapted to a tightening tool. In implementation, the tightening part 52 can be a straight groove, a cross-shaped groove, or an internal hexagonal groove, etc. For example, Figure 6 As shown, the tightening part 52 uses an internal hexagonal groove. In implementation, the depth of the threaded hole 33 can be greater than or equal to the sum of the thickness of the head 41 and the thickness of the tightening component 5, so that after assembly, the entire tightening component 5 can be completely housed within the threaded hole 33 without protruding outwards. In implementation, the tightening component 5 can preferably use existing set screws.

[0050] like Figure 7 and Figure 8As shown, during assembly, the rod portion 42 of the rod member can be inserted into the sliding channel 36 through the positioning hole 34, and the head 41 of the rod member can be accommodated in the threaded hole 33; the clamping component 5 is threadedly connected to the threaded hole 33 and presses the head 41 of the rod member, thereby pressing the rod member against the plug head 4131, so as to fix the rod member to the movable frame 3. In this design, the positioning hole 34 can constrain and position the rod 42, and the alignment accuracy between the rod 42 and the positioning hole 34 can be ensured through the cooperation between the rod 42 and the positioning hole 34. This makes it easier to ensure that the rod 42 and the sliding channel 36 are coaxial, and facilitates a higher precision coaxial effect. By tightening the rod component with the clamping component 5, the relative position between the rod component and the sliding channel 36 will not be changed, thus not affecting the alignment accuracy between the rod 42 and the sliding channel 36. The fixing process does not require rotating the rod component, so there is no need to process grooves on the rod 42. This effectively solves the problem that grooves can easily damage the power chamber sealing ring 63, resulting in a significant reduction in the service life of the sealing ring 63. Compared to other designs, this design not only makes it easier to ensure the alignment of the rod component with the sliding channel 36, but also helps to improve the alignment accuracy of the rod component with the sliding channel 36. This makes the assembly process simpler and more efficient, and prevents the sealing mechanism 2 from getting stuck or even jammed during movement due to misalignment between the rod 42 and the sliding channel 36. In addition, it is less likely to damage the sealing ring 63, ensuring the service life of the sealing ring 63.

[0051] Example 2

[0052] Because existing pneumatic launchers are prone to air leakage between the rod 42 and the exhaust channel, resulting in a decrease in the high-pressure gas pressure within the air chamber 61 and continuous gas loss, this leads to a reduction in throwing distance and the number of throws. To address this problem, this embodiment provides a valve core assembly for a pneumatic launcher, including an air storage component 6 and a sealing mechanism 2 as described in Embodiment 1. Figure 9 As shown, the sealing mechanism 2 is movably constrained by the gas storage component 6, and the front end of the gas storage component 6 is configured to be inserted into the sliding channel 36. The gas storage component 6 contains a gas chamber 61 for containing gas and a guide channel 62 adapted to the rod 42. The guide channel 62 passes through the front end of the gas storage component 6 and is connected to the gas chamber 61. Figure 9 As shown.

[0053] Meanwhile, a pressure ring 64 is threadedly connected to the front end of the gas storage component 6. The pressure ring 64 is used to constrain the sealing ring 63 of the adapter rod 42, such as... Figure 9 As shown, the sealing ring 63 is used to seal the rod 42 when it is inserted into the exhaust channel.

[0054] In actual use, when the rod 42 in the sealing mechanism 2 is disengaged from the sealing ring 63, the vent 32 is connected to the air chamber 61, so that the high-pressure gas in the air chamber 61 can be quickly discharged from the vent 32 and act on the glass-breaking ball in the pneumatic launcher, so that the glass-breaking ball can be thrown out by air pressure to achieve the purpose of breaking the glass.

[0055] When the rod 42 in the sealing mechanism 2 is inserted into the sealing ring 63, as Figure 9 As shown, the vent 32 is not connected to the air chamber 61. At this time, the gas in the air chamber 61 cannot be discharged through the vent 32. The pressure in the air chamber 61 can gradually increase and reach the pressure required to throw the broken glass ball, so that the broken glass ball can be thrown again.

[0056] In this embodiment, by providing a sealing ring 63 adapted to the rod portion 42 at the front end of the gas storage component 6, the sealing ring 63 can achieve a better sealing effect between the rod portion 42 and the exhaust channel, such as... Figure 9 As shown, to prevent air leakage between the rod 42 and the exhaust channel, both throwing distance and number of throws can be guaranteed; by configuring the pressure ring 64 and threading the pressure ring 64 to the front end of the air storage component 6, not only can the sealing ring 63 be effectively restricted and constrained to prevent the sealing ring 63 from falling off, but the installation and replacement of the sealing ring 63 can also be made easier.

[0057] Example 3

[0058] This embodiment provides a pneumatic launcher, including the sealing mechanism 2 described in Embodiment 1 or the valve core assembly described in Embodiment 2. Of course, in a more complete solution, this pneumatic launcher also includes a housing, a guide cylinder for guiding the throwing process of the broken glass ball, a locking mechanism, a ball storage module for storing the broken glass ball, and a control module for controlling the locking mechanism, etc. For details, please refer to Chinese Patent CN211893653U, which will not be elaborated here.

[0059] The above description is only a specific embodiment of this utility model, but the protection scope of this utility model is not limited thereto. Any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in this utility model should be included within the protection scope of this utility model.

Claims

1. A blocking mechanism, characterized in that, The device includes a movable frame, a rod component, and a clamping component. The movable frame includes a plug head and a sliding sleeve connected to the plug head. The sliding sleeve has a sliding channel. The plug head has a vent hole, a threaded hole, and a positioning hole. The vent hole is connected to the sliding channel, the threaded hole is connected to the positioning hole, and the positioning hole is connected to the sliding channel. The rod component includes a rod portion and a head disposed at one end of the rod portion. The rod portion is adapted to the positioning hole, and the rod portion of the rod component is inserted into the sliding channel through the positioning hole. The tightening component is threadedly connected to the threaded hole and presses the rod component against the plug head.

2. The sealing mechanism according to claim 1, characterized in that, The positioning hole is coaxial with the sliding channel.

3. The sealing mechanism according to claim 1, characterized in that, The threaded hole and the positioning hole are coaxial.

4. The blocking mechanism according to claim 1, characterized in that, The rod is a cylindrical rod, and the positioning hole is a circular hole. The outer diameter of the rod is less than or equal to the inner diameter of the positioning hole.

5. The sealing mechanism according to claim 1, characterized in that, The vent hole extends through both ends of the plug head; And / or, the positioning hole is constructed at the center of the plug head, and each vent hole is evenly distributed along the circumference of the positioning hole.

6. The sealing mechanism according to claim 1, characterized in that, The mobile frame is a one-piece molded component; And / or, the outer surface of the sliding sleeve is also provided with a groove; And / or, the end of the rod opposite the head is constructed with a streamlined structure.

7. The sealing mechanism according to claim 1, characterized in that, The outer side of the clamping component is provided with an external thread that is adapted to the threaded hole, and one end of the clamping component is provided with a tightening part that is adapted to a tightening tool.

8. The sealing mechanism according to claim 7, characterized in that, The tightening part is a straight groove, a cross-shaped groove, or an internal hexagonal groove.

9. A valve core assembly, characterized in that, The device includes a gas storage component and a sealing mechanism as described in any one of claims 1-8. The sealing mechanism is movably constrained by the gas storage component, and the front end of the gas storage component is configured to be inserted into a sliding channel. The gas storage component contains a gas chamber for containing gas and a guide channel adapted to the rod. The guide channel extends through the front end of the gas storage component and communicates with the gas chamber. A pressure ring is threadedly connected to the front end of the gas storage component. The pressure ring constrains the sealing ring of the rod, and the sealing ring provides a seal when the rod is inserted into the exhaust channel. When the rod in the sealing mechanism is disengaged from the sealing ring, the vent is connected to the gas chamber; when the rod in the sealing mechanism is inserted into the sealing ring, the vent is not connected to the gas chamber.

10. A pneumatic launcher, characterized in that, It includes the sealing mechanism as described in any one of claims 1-8 or the valve core assembly as described in claim 9.

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