JP5593292B2 - Control valve device in gas gun - Google Patents

Description

  The present invention relates to a control valve device in a gas gun in which a gas source is connected to a bullet loading part side of a barrel by a gas flow path, a valve element arranged in the gas flow path is opened by a trigger operation, and a bullet can be fired. It is about.

For simulated guns such as gas guns, the kinetic energy of bullets fired in Article 1-2, etc. of the Enforcement Law of the Guns, Swords, and Others Law is specified. It will be understood that if the energy at the measurement point is greater than 3.5 J / cm ² , it will be treated as a quasi-air gun. Therefore, a gas gun exceeding the above value has not been manufactured, but if several conditions overlap, it may be possible to temporarily exceed the above value. For example, conditions such as use under a high temperature such as midsummer and changes in the internal pressure of a gas cylinder or a gas tank in a gun body may cause the above problem. In addition, in the case of multi-barreled gas guns, when all the barrels are loaded with bullets, the design does not exceed the upper limit for each bullet, so if some barrels are deliberately blocked, The loaded bullet may be fired at a pressure higher than the specified level. On the other hand, if bullets are not loaded in some barrels of a multi-barreled gas gun, the gas will be released from the barrels, and the loaded bullets will be at a pressure below the lower limit of the performance set for the product. It can happen to be fired.

  For example, there is an invention relating to an air gun disclosed in Japanese Patent Application Laid-Open No. 2009-14327 as a prior art that deals with such a case. According to the invention of the same number, when the pressure and flow rate of the compressed gas provided in the gas discharge passage and discharged from the gas accumulator chamber to the inner barrel reach a value above a certain level, the gas discharge passage automatically enters the inner barrel. The automatic valve has a configuration in which the pressure and flow rate of the compressed gas discharged from the gas accumulator chamber to the inner barrel are adjusted by closing the flow path while the automatic valve is narrowed. Further, the invention has an elastic body that controls movement of the automatic valve, and the automatic valve closes the flow path from the gas discharge flow path to the inner barrel while narrowing against the urging force of the elastic body. It includes the added configuration.

  According to the above-described invention, the automatic valve in a stationary state in the gas discharge flow path is drawn by the bullet firing by the pressure and flow rate of the gas in the gas discharge flow path, and the chamber is moved by the automatic valve moving forward of the gun. The flow path of the side gas discharge port is closed while the opening and closing valve is narrowed, and the flow rate of the gas flowing out into the inner barrel is gradually reduced and stopped, so that the bullet speed does not increase more than necessary. Can be reached. However, the automatic valve completely closes the gas discharge port, and gas pressure is acting upstream from the automatic valve, so even if there is no gas pressure and flow, it does not move to the rear of the gun and it returns to the original position. It cannot be retreated.

  Therefore, in the above-described invention, the automatic valve cannot be opened unless a strong spring that exceeds the gas pressure upstream of the automatic valve, which is an added elastic body, is pushed back after the bullet is fired. If the urging force is such a strong automatic valve, the gas pressure required for launching must also be strong, which leads to a contradiction that the firing rate will become increasingly faster. Therefore, in order to release the pressure condition after the bullet is fired, it is necessary to vent the gas in the gas accumulator chamber inside the magazine and open the on-off valve to return it to near atmospheric pressure. Therefore, even if the said invention fires one bullet and makes it possible to suppress the firing speed, it is determined that continuous firing cannot be expected.

JP 2009-14327 A

  The present invention has been made paying attention to the above-mentioned points, and an object thereof is to suppress the bullet firing speed and to enable continuous bullet firing. Another object of the present invention is that in a multi-barreled gas gun, when bullets are not loaded in all barrels, the loaded bullets do not fall below the lower limit of the performance set for the product. A control valve device in a gas gun is provided.

In order to solve the above-mentioned problems, the present invention can connect a gas source and a bullet loading part side of a barrel by a gas flow path, open a valve body arranged in the gas flow path by a trigger operation, and fire a bullet A control valve device for a gas gun , which is adjacent to the bullet loading part side of the barrel, and a flow rate adjusting unit set in the gas flow path, and the gas flow path tends to close after the start of bullet movement to suppress the firing speed In addition, the control valve incorporated in the flow rate adjustment unit so as to be movable in the flow path direction by the gas flowing into the flow rate adjustment unit, and the in-situ regulation against the gas flow generated inside the barrel due to the bullet firing comprising a biasing means acting on the control valve so that said control valve has a vent means for establishing communication with the downstream and upstream of the control valve for return to the original position, the ventilation means A small opening opens at the upstream end of the control valve. And, in which it took measures that are of constantly open.

  The apparatus of the present invention is a control in a gas gun in which a gas source is connected to a bullet loading part side of a barrel by a gas flow path, a valve element arranged in the gas flow path is opened by a trigger operation, and a bullet can be fired. The present invention relates to a valve device. The compressed gas filled in the pressurized gas source is released by the valve body, but immediately before flowing into the barrel, a control valve device is provided to suppress the bullet firing speed. And a control valve.

  The flow rate adjusting part is set in the gas flow path adjacent to the loading part side of the barrel, and the control valve is incorporated in the flow rate adjusting part so as to be movable in the flow direction by the gas flowing into the flow rate adjusting part. It is. Therefore, the gas flow that has flowed through the gas flow path flows into the flow rate adjusting unit, and flows out to the barrel through the control valve. For this reason, the control valve is connected to the downstream side of the control valve to return to the original position. Ventilation means is provided for passing through the upstream. The control valve is actuated by a pressure difference formed by a high pressure generated upstream of the control valve and a low pressure downstream, under the action of a gas flow passing through the flow rate adjusting unit. That is, the control valve, which is a pressure differential valve, restricts the gas flow rate ejected into the barrel as the bullet is fired, and acts as an urging means that counteracts the gas flow ejected into the barrel as the bullet is fired. receive. Thus, the control valve can move in the barrel direction with the gas flow spouting into the barrel as the bullet is fired, and the embodiments are described as such. In addition, when designing a gas gun that mimics that of a real gun, it is possible that the flow rate adjustment unit will be separated from the barrel loading unit, but the flow rate adjustment unit is adjacent to the barrel loading unit. If it is a configuration, there will be no problem in design.

  Note that once the opening area of the ventilation means is determined, a change in the control valve or the like is required for the change. Therefore, in the present invention, the gas flow rate suitable for the legal kinetic energy of the bullet is ensured by (the area of) the ventilation means provided in the control valve, while the upper limit of the legal kinetic energy is not exceeded. A method of finely adjusting the degree of the allowable gas flow rate by the means (area) and the spring strength of the biasing means is adopted. This makes it possible to easily determine the minimum and necessary conditions for obtaining the kinetic energy of the bullet, and also to easily respond to changes in settings. On the other hand, the fact that the control valve moves even slightly in the barrel direction means that the gas is consumed accordingly. If this is the case, the above-mentioned ventilation is required so that the necessary and sufficient gas flow rate and pressure can be obtained within the range that does not exceed the upper limit of the kinetic energy of the fired bullet as stipulated in the Law for Possession of Guns, Swords, etc. By determining the opening area of the means and designing so that the control valve does not move even if the spring of the biasing means is weak, it is possible to reduce waste.

  In the control valve device of the present invention, one desirable configuration is that the flow rate adjusting portion is formed to have a larger diameter than the control valve, and has a stop portion that receives the control valve on the upstream side, and the control valve device slides on the downstream side. The control valve has a hollow cylindrical structure opened on the barrel side, and the control valve has an opening as a ventilation means for allowing gas to pass through the upstream side surface of the cylindrical gas flow path. It has a small opening at its upstream end, and is urged by the urging means in the upstream direction, and is received by the stop when gas does not flow in, allowing the gas to pass through the opening, Even in a state where the control valve enters the sliding portion up to a part of the opening, the gas passes from the ventilation means.

  In a multi-barreled gas gun in which a plurality of barrels and flow rate adjustment units are provided in parallel, one gas flow path branches into a plurality of flow rate adjustment units on the downstream side, and a control valve is provided in each flow rate adjustment unit. Even if a bullet is loaded in only a part of a plurality of barrels, the gas is prevented from leaking from a barrel not loaded with a bullet. To prevent gas leakage, in multi-barreled gas guns, even when bullets are not loaded in all barrels, the pressure of the fired bullets will not drop below the lower limit of performance set for the product. To be controlled.

  Although the specific configuration of the ventilation means can be determined freely, it is composed of a normally open opening and a small opening opened at the upstream end of the control valve. The small opening is a part of the ventilation means and is provided independently of the opening part of the constant opening, and is also provided as a part of the opening part provided on the upstream side surface of the control valve. In the latter case, the opening part enters the sliding part even if the control valve moves by engaging the downstream side of the flow rate adjustment part at the step provided outside the control valve or at the entrance of the sliding part. Therefore, the gas flow is maintained without closing. As described above, the desirable range of the gas flow rate of the ventilation means including the small opening is that the area of the opening and the spring necessary for obtaining the kinetic energy of the bullet, as defined in the Law for Possession of Guns, Swords, etc. Given from strength. In other words, the area of the opening necessary to obtain a bullet firing speed that conforms to the above definition is first determined, and the final value is determined by adjusting the result according to the spring strength.

  Since the present invention is configured and operates as described above, after the bullet is fired, the bullet firing speed is suppressed by the ventilation means that maintains the gas flow upstream and downstream of the control valve. , Can enable continuous firing of bullets. Further, according to the present invention, in a multi-barrel gas gun, one gas flow path is branched into a plurality of flow rate adjustment units on the downstream side, and a control valve is incorporated in each flow rate adjustment unit, thereby Bullet fired from the loaded barrel is maintained even if the barrel is not loaded with bullets, and bullets fired when modifications are made that intentionally block some barrels Since the firing speed does not exceed the upper limit of the kinetic energy, a control valve device in a gas gun suitable for the purpose can be provided.

  Hereinafter, the present invention will be described in more detail with reference to illustrated embodiments. FIG. 1 is a side view showing an example of a gas gun 10 to which a control valve device according to the present invention is applied. Reference numeral 11 denotes a gas gun body, and 12 denotes a gas source. The gas source 12 communicates with the gas flow path 13 by a vaporized gas extraction cylinder 12a projecting inwardly. The gas flow path 13 is provided in the gas gun body 11, and the ends thereof reach a plurality of barrels 14. Yes. The gas flow path 13 has an air chamber 16 that is opened and closed by a valve body 15 in the middle thereof, and further has a flow rate adjusting unit 17 adjacent to the mounting portion 14a side of the barrel 14 on the downstream side. . The portion 11 a having the air chamber 16 is provided on the gas gun body 11 side, and a plurality of springs 11 b are disposed between the nozzle assembly 24 described later.

  The valve body 15 is a cylindrical member that is open at the front end and closed at the rear end, the front end portion 15a enters the gas flow path in the main body, and the rear end portion 15b is attached to the rear from a part of the gun main body 11. It is attached to the gas gun body 11 so as to be movable in the front-rear direction. Further, a protrusion 15c is provided on the outer periphery of the valve body 15 on the rear side of the intermediate portion, and the protrusion 15c seals the vaporizing chamber 16 in an airtight manner by contacting the seat 16a at the rear of the vaporizing chamber. And is biased by a spring 15d in that direction. A gas passage 15e is provided in a cylindrical portion located behind the protrusion 15c, and when the valve body 15 moves forward, the gas flow flows into the valve body through the gas passage 15e. It is the structure to do. A mechanism for hermetically sealing is also provided between the front end portion 15a and the rear end portion 15b of the valve body 15 so as to be movable.

  The gas gun main body 11 has a trigger 18, and the trigger 18 is rotatably provided by a shaft 18 a, and is configured to open the valve body 15 through a shear 19 and a striker 20 by the operation thereof. . The shear 19 is rotatably provided by a shaft 19a and has an engagement counterpart 19b that engages with the engagement portion 18b of the trigger 18. The striker 20 is attached to a guide shaft 21 provided in the gas gun main body 11 so as to be movable in the front-rear direction, and is urged forward by a spring 21a. It has the structure which pressurizes the part 15b. While the trigger 18 and the shear 19 are engaged, the shear 19 is also engaged with the part 20c of the striker 20 at the part 19c, and the striker 20 is placed at the standby position. Although not shown, the trigger 18 and the shear 19 are provided with return springs.

  In the present invention, the flow rate adjusting unit 17 is set in the gas flow path 13 adjacent to the mounting portion side of the barrel 14 as described above, and the control valve device 25 is provided in the flow rate adjusting unit 17. It can be said that the flow rate adjusting unit 17 in the present invention is formed to have a larger diameter than the control valve 22 and that the control valve 22 has a space 23 that can move in the gas flow path direction. . And the flow volume adjustment part 17 has the stop part 24b which receives the control valve 22 in the upstream of the space 23. FIG. Further, the downstream side of the flow rate adjusting unit 17 communicates with a sliding unit 26 that allows the control valve 22 to slide (see FIGS. 1 and 2). The portion provided with the flow rate adjusting unit 17 has a gas injection nozzle 24a at the tip, corresponds to the nozzle assembly 24 described above, and is provided so as to be movable in the front-rear direction with respect to the gas gun body 11. And constitutes a part of the bullet loading mechanism.

  The control valve 22 has a hollow cylindrical structure that is open on the barrel side and closed on the upstream side, and an opening 27 that allows gas to pass therethrough as a ventilation means 28 on a side surface on the upstream side of the gas flow path in the cylindrical structure. And the small opening is constituted by an independent through hole or a part of the upstream side of the opening 27 (see FIGS. 3 and 4). The control valve 22 is urged by a coil spring as the urging means 29 in the upstream direction. When the gas from the gas source 12 does not flow in, the control valve 22 is received by the stop portion 24b and allows the gas to pass through the opening 27. It can be moved by the gas flow. Accordingly, even when the control valve 22 enters the sliding portion 26 up to a part of the opening 27 with the bullet firing and the flow of the gas flowing into the barrel is restricted, the gas is vented. Is configured to pass through.

  As the small opening of the ventilation means 28 provided in the control valve 22, several morphological and structural changes can be taken. The control valve 22 has a hollow cylindrical shape as described above, and has a cap-shaped conical head portion 22h provided on the closed upstream side. The conical head portion 22h has a diameter slightly larger than that of the valve tube portion, and at the boundary. A stepped locking portion 22b is formed, and the opening 27 is opened in the downstream portion following the shade. The small opening of Example 1 shown in FIGS. 1 to 3 is an independent small opening 22a that penetrates the center of the conical head portion 22h at the upstream end of the control valve 22 in the axial direction. The ventilation means 28 is composed of an opening 27 that is always open and a small through-opening 22a, and maintains the gas flow upstream and downstream of the control valve 22 in a state where the flow of gas flowing into the barrel is restricted. (See FIG. 5). The control valve 22 of this example receives the gas pressure, and after the start of the bullet movement, the control valve 22 restricts the flow of the gas flowing into the barrel, as will be apparent from the description of the operation described later. It is configured to move in the barrel direction. However, as described above, it is also possible to adjust the area of the small opening 22a and the spring strength of the urging means 29 so as to constitute the control valve device 25 of a type in which the control valve 22 hardly moves.

  The small opening may be provided as a part of the opening 27 that is the ventilation means 28 provided on the upstream side surface of the control valve 22. The small opening provided as a part of the opening 27 is formed by, for example, providing a stepped portion outside the control valve 22 and engaging with the downstream side of the flow rate adjusting unit 17, and flows into the barrel by the control valve 22. Even in a state where the flow of gas is restricted, the control valve 22 is provided so as to maintain the gas flow without completely entering the opening 27 into the sliding portion 26. FIG. 4 shows an example 2 of such ventilation means, in which a part of the cap-shaped conical head portion 22h downstream is extended to form a stepped engagement portion 22c. Therefore, the extended engagement portion 22c is locked to the opening end of the sliding portion 26 as a stepped portion so that the opening 27 is not fully closed, and a part of the opening 27 corresponding to the extension is opened. The gas flow is maintained as the ventilation means 28 (see FIG. 6).

  Providing the sliding portion 26 with a small opening that keeps the gas flow without entering all of the opening 27 can be obtained by providing an engaging portion on the sliding portion 26 side. . FIG. 7 shows Example 3 of such ventilation means 28, and an engagement portion 22 d that protrudes in the upstream direction of the gas flow path is provided at the opening end of the sliding portion 26. The engaging portion 22d may be a member created separately or attached to the opening end, or may be formed integrally when the opening end is molded. In the state where the control valve 22 of the example shown in FIGS. 4, 6 and 7 receives the gas pressure and the flow of the gas flowing into the barrel is restricted by the control valve 22 after the start of the bullet movement, Although it corresponds to the control valve device 25 of a type that moves slightly in the barrel direction, these are also the types in which the area of the small opening 22a and the spring strength of the biasing means 29 are adjusted and the control valve 22 hardly moves. The control valve device 25 can be configured in the same manner as in the above example.

  In the example in which the apparatus of the present invention is applied to the multi-barreled gas gun 10, the gas flow path 13 opens from the upstream to the center of the space 23 of the flow rate adjusting unit 17, and this space 23 includes three sliding portions 26. The sliding part 26 is located slightly outside the center of the sliding part 26 and reaches each barrel 14 (FIGS. 1 and 2). Therefore, the space 23 of the flow rate adjusting unit 17 is a part that divides the gas flow into the three barrels 14. On the other hand, the bullet B is supplied from the cartridge 31 mounted on the lower portion of the gas gun body 11 to the bullet loading portion 14a side of the barrel 14. Since the illustrated multi-barrel gas gun 10 has three barrels 14, the bullet B in this case is formed in a triangular or trifurcated cross section through the tip of the bullet passage 32 of the cartridge 31. It is introduced into the bullet feed chamber 33 (see FIG. 8). The bullet feeding chamber 33 is provided on the gun body side, and a bullet defining member 34 is arranged in a state where the bullet feeding member 33 is urged toward the bullet passage by the urging means 35, and the bullet B which attempts to enter the bullet passage 32 is provided. Is placed in a stopped state by hitting a rocking member 36 provided so as to be able to enter and exit the bullet passage 32. Therefore, when the swinging member 36 is in a state of being removed downward from the bullet passage 32 and the bullet B enters the bullet passage 32 while being pressed by a spring device (not shown), finally, the swinging member 36 It is pushed by the tip 37 and distributed to the left and right, and is pushed by the bullet defining member 34 and guided to the bullet feeding chamber 33 following the bullet loading portion 14a by the shape of the bullet contact portion 38 (FIG. 8B). The invention of the multiple barrel mounting apparatus of Japanese Patent No. 3045984 owned by the present applicant is applied to this mounting mechanism.

  Next, the operation of the apparatus of the present invention will be described. Now, it is assumed that the multi-barrel gas gun 10 is in a ready-to-fire state shown in FIG. When the trigger 18 is operated in this state, the shear 19 rotates clockwise to disengage, and the striker 20 is urged by the spring 21a to pressurize the rear end portion 15b of the valve body 15. 15 opens (FIG. 9). The gas from the gas source 12 flows into the air chamber 16 which is a part of the gas flow path 13, and flows into the inside of the valve body 15 from the outer periphery of the valve body 15 through the gas passage 15 e by this valve opening. Further, the gas is discharged into the space 23 of the flow rate adjusting unit 17 downstream of the gas flow path 13, passes through the opening 27 of the control valve 22, flows into the loading unit 14 a, and the high-pressure gas flow acts on the bullet B. Then it will be launched.

  In the above process, the gas is discharged into the space 23 of the flow rate adjusting unit 17 downstream of the gas flow path 13 and passes through the control valve 22, so that the control valve 22 is pressurized by a high-pressure, high-speed gas flow. At the same time, the flow of the gas flowing into the barrel as the bullet B is fired is limited. For this reason, the control valve 22 instantaneously moves forward, but returns to the original position at the next moment (FIG. 10). In this way, since the control valve 22 is instantaneously and counteracted with respect to the state created by the fired bullet B, the bullet B is not subjected to a pressure higher than a preset value. , Can keep the bullet speed almost constant. In addition, as shown in FIG. 9 and the subsequent figures, the bullets B are fired because gas does not escape from the barrel 14 when any of the plurality of barrels 14 is not closed, as indicated by a cross mark. It is possible to suppress a decrease in bullet speed without lowering the gas pressure.

  Although the control valve 22 is closed after the bullet B is fired, gas is released from the upstream side of the control valve 22 by the ventilation means 28 provided in the control valve 22, and the biasing means 29 is Thus, the control valve 22 returns to the standby position before the pressure balance upstream and downstream of the control valve device 25 is restored. Therefore, it will be understood that the gas gun to which the apparatus of the present invention is applied enables continuous firing of the bullet B without any problem. In the gas flow path 13 located further upstream, the valve body 15 is immediately closed by the urging force of the spring 15b after opening (FIG. 11).

Table 1 below summarizes the effects of the control valve 22 in relation to the state of loading or the presence of bullets. In Table 1, the number in the barrel column indicates the barrel number, the circle in the bullet loading column indicates that a bullet is loaded, and x indicates that no bullet is loaded.
Table 1

At the normal gas pressure in Table 1, in the state A in which bullets are loaded in all the barrels, the control valve 22 moves in the closing direction for a moment before and after the bullets are fired as described above, but at the next moment. Returns to its original position and does not close, so this is indicated as “open”. In the state B, in the barrel 3 in which no bullet is loaded, the control valve 22 is closed once to prevent gas leakage, and returns to the original position after the bullet is fired. Yes. Therefore, in the barrels 1 and 2 loaded with bullets, the decrease in bullet speed is suppressed, and the control valve 22 also moves in the closing direction for a moment, but returns to its original position at the next moment, so it is “open”. The same applies to the state C. Since no bullets are loaded in any barrel in state D, the gas pressure is equally applied to all barrels 1, 2, and 3, and the control valve 22 moves in the closing direction from state A, but the valve is not closed. Therefore, it is “open”. State E is when only the barrel 1 is loaded with bullets and the barrels 2 and 3 are closed, and the control valve 22 of the closed barrels 2 and 3 is not moved and remains unchanged. Corresponds to “open”. When the gas pressure is concentrated on the barrel 1 loaded with bullets, the control valve 22 is once closed, so that an increase in bullet speed is suppressed. The same applies to the state F. In state G, there are a mixture of those that are not loaded with bullets and those that are closed with barrels, but even if no bullets are loaded, the control valve 22 of the barrel 2 once closes and gas leaks. Suppress. On the other hand, when the barrel 3 is closed and the control valve 22 remains “open”, the gas pressure concentrates on the barrel 1, but since the control valve 22 of the barrel 1 is once closed, an increase in the bullet velocity is also suppressed. I understand that

  On the other hand, in the state filled with the high gas pressure shown in Table 1, the gas pressure becomes higher than the strength of the venting means 28 and the urging means 29 of the control valve 22 set in advance. For this reason, in the control valve device 25 of each barrel loaded with bullets, the control valve 22 closes at a short time rather than momentarily, so in any case, the bullet firing speed tends to be suppressed. It will be clear that after the bullet firing, the control valve 22 will immediately return to its original position and open due to the action already described. Even in a high gas pressure filled state, the control valve 22 remains open (see states E, F, and G) in the closed barrel because gas cannot flow. In the above description, “open”, “closed” and the like are for convenience of explanation, and even “open” includes the case of moving in the valve closing direction, and “closed”. However, it does not continue to maintain the closed state. In such “closed” state, the control valve 22 tends to close by receiving an acting force in the closing direction. In this sense, the state of the control valve 22 in Table 1 and Table 2 to be described later is a guideline until it gets tired.

  Next, an example in which the apparatus of the present invention is applied to a single barrel gas gun 10S will be described. In each figure after FIG. 12, 41 indicates a gas gun body, and 42 indicates a gas source. The gas source 42 is connected to one barrel 44 provided in the gas gun body 41 through the gas flow path 43. The gas flow path 43 has a nozzle assembly 50 that is incorporated in the middle of the gas gun body 41 so as to be movable in the front-rear direction with the firing operation, and the nozzle assembly 50 is on the lower side. The connection port 46 provided passes through the upstream side and the downstream side. The gas flow path 43 further includes a flow rate adjusting unit 47 adjacent to the loading unit 44 a side of the barrel 44 on the downstream side. As will be described later, the nozzle assembly 50 moves forward with the firing operation, and the front end portion 50a can be connected to the loading portion 44a, and moves backward with the next firing preparation operation to enable loading. It has a configuration.

  The gas gun body 41 has a trigger 48, and the trigger 48 is provided so as to open and close the valve body 45 in association with a hammer 49 by a member 48 a provided so as to be movable back and forth. For this purpose, the hammer 49 is rotatably provided on the shaft 49 a, and the engagement portions 48 b and 49 b are engaged by a trigger operation, and the valve body 45 is opened via the hammer operator 51. Has been. The valve body 45 is installed in the upstream portion of the gas flow path 43 which is also an air chamber, and maintains airtightness. The valve body 45 is biased in the valve closing direction by a spring 45 a and is in contact with the hammer operator 51. The hammer 49 is urged in a direction to pressurize the hammer operator 51 by a spring (not shown).

  The nozzle assembly 50 is formed as a cylindrical member having a front end opened and a rear end closed. The nozzle assembly 50 corresponds to the flow rate adjustment unit 17 in comparison with the multi-barrel gas gun 10, and is a control valve device. 55 is a portion configured. Therefore, also in the single barrel gas gun 10S, the elements necessary as the flow rate adjusting unit 17 are formed to have a larger diameter than the control valve 52, and there is a space 53 in which the control valve 52 can move in the gas flow path direction. Is. Further, the control valve device 55 constitutes a stop portion 54 where the upstream wall surface of the space 53 receives the control valve 52. The downstream side of the flow rate adjusting unit 17 communicates with a sliding unit 56 that slides the control valve 52 (see FIG. 13).

  As the control valve 52, those shown in FIGS. 3 to 7 can be basically applied. The illustrated control valve has a hollow cylindrical structure that is open on the barrel side and closed on the upstream side, and an opening through which gas passes as an aeration means 58 on the upstream side surface of the gas flow path in the cylindrical structure. 57 and a small opening 52a penetrating the head portion 52h on the upstream side. The control valve 52 is urged by the urging means 59 in the upstream direction. When the pressurized gas does not flow in, the control valve 52 is received by the stop portion 54 and allows the gas flow to pass through the opening 57 and the high pressure gas. In the case of the gas pressure state, the control valve 52 enters the sliding portion 56 up to a part of the opening portion 57 in a state where it is moved by the gas flow, and the gas passes through the small opening 52a of the ventilation means 58. ing.

  The operation of the single barrel gas gun 10S having such a configuration will be described. First, in the ready state shown in FIGS. 12 and 13, by performing a cocking operation, the nozzle assembly 50 moves forward, and the bullet B is supplied to the one-shot bullet portion 44a (FIG. 14). Next, the hammer 49 is once tilted by the operation of the trigger 48. Thereafter, when the engagement between the member 48a and the hammer 49 is disengaged, the hammer 49 is rotated counterclockwise by the spring, hitting the hammer operator 51, and the valve body 45 is moved. The valve is opened and the gas flows out to the gas flow path 43. The gas that has flowed out flows into the space 53 from the connection port 46, acts on the bullet B in the bullet loading portion 44a, and fires (FIG. 15).

  As the gas flows into the flow rate adjusting unit 47 downstream of the gas flow path 43 and passes through the control valve 52, the control valve 52 is pushed by the high-pressure, high-speed gas flow in the process, As the bullet B is fired, the flow of gas flowing into the barrel is restricted. For this reason, the control valve 52 instantaneously moves forward, but returns to the original position at the next moment (FIG. 16). Thus, the control valve 22 is instantaneously and counteracted by the state created by the fired bullet B, so that no more pressure than the preset pressure is applied to the bullet B. A constant bullet speed can be maintained. As a result, even when the gas gun is subjected to a situation or modification in which excessive pressure is applied to the bullet B, the control valve 52 is moved by the firing of the bullet B, the control valve 52 is closed, and the brake is applied. Therefore, the bullet speed will not be excessive.

  When the filled gas has a high gas pressure, the control valve 52 is closed after the bullet B is fired. However, since the gas is discharged from the upstream side of the control valve 52 by the ventilation means 58 provided in the control valve 52 and the urging means 59 is acting, the pressure balance on the upstream and downstream sides of the control valve device 55 is balanced. Prior to recovery, the control valve 52 returns to the standby position (FIG. 17). Therefore, it can be understood that according to the gas gun to which the apparatus of the present invention is applied, continuous firing of the bullet B can be performed without any problem. The gas flow path 43 is opened only when the upstream valve body 45 is hit by the hammer 49, and then closed by the biasing force of the spring 45a.

Table 2 below summarizes the action of the control valve 52 in the single barrel gas gun 10S in relation to the state of loading or the presence of bullets. As in Table 1, the number in the barrel column indicates a single barrel, the circle in the bullet loading column indicates that a bullet is loaded, and x indicates that no bullet is loaded.
Table 2

In the normal gas pressure of Table 2, in the state H in which the bullet is loaded in the barrel, as described above, the control valve 52 acts in the closing direction for a moment before and after the bullet B is fired. Since it opens at the moment, this is "open". Since Table 2 shows the case of the single barrel gas gun 10S, in the state I in which no bullet is loaded, the control valve 52 moves, but does not reach “close” but “open” in the state H in which the bullet is loaded. Stay on. In the state J in which the barrel is closed, the control valve 52 remains open and does not move, so this also corresponds to “open”. In the state H in which the high gas pressure is filled, the gas pressure becomes higher than the strength of the venting means 58 and the urging means 59 of the control valve 52 set in advance. Therefore, in the control valve device 55, the control valve 52 closes at a short time longer than a moment, so that the bullet firing speed tends to be suppressed. In state I, where no bullet is loaded, the control valve 52 is closed to prevent gas leakage, and in state J, where the barrel is closed, the control valve 52 remains open because it is stationary and does not change, Corresponds to “open”. It should be noted that “open”, “closed”, etc. are for convenience of explanation, even if “open” includes the case of moving in the valve closing direction, and “closed” is also in the closed state. Does not keep holding. However, in the “closed” state, as described above, the control valve 22 tends to close by receiving an acting force in the closing direction.

  Since the control valve devices 25 and 55 in the gas gun according to the present invention are configured as described above, the flow of the bullet flowing into the barrel after the start of the bullet movement is limited, and the bullet firing speed is braked. It acts so as not to exceed the upper limit of the predetermined kinetic energy. As described above, the present invention is intended for a gas gun, but the gas used is a compressed gas. Therefore, the present invention can also be applied to a gun configured using compressed air as a pressure source. It is. As for the structure of the gas source, what is shown in FIG. 1 is a built-in type in the gas gun body 11, and FIG. 12 is a detachable type in the gas gun body 41. However, as described above, the present invention can be applied to both types.

It is sectional explanatory drawing which shows an example of the multi-barrel gas gun to which the control valve apparatus which concerns on this invention is applied. It is sectional drawing which shows the example of the control valve apparatus in the example of FIG. 1 shows a control valve example 1 used in a control valve device of the present invention, wherein A is a perspective view seen from the upstream side, and B is a perspective view seen from the downstream side. FIG. Similarly, it shows Example 2 of the control valve, A is a perspective view seen from the upstream side, B is a perspective view seen from the downstream side. It is sectional drawing which similarly shows the apparatus operating state of this invention using the control valve of Example 1. FIG. It is sectional drawing which similarly shows the apparatus operating state of this invention using the control valve of Example 2. FIG. It is sectional drawing which similarly shows the apparatus operating state of this invention using the control valve of Example 3. FIG. FIG. 2 shows a multi-barrel loading mechanism, in which A is a cross-sectional explanatory view before bullet feeding, and B is a cross-sectional explanatory diagram in a state where preparation for bullet feeding is completed. In the control valve apparatus which concerns on this invention, it is explanatory drawing which shows the effect | action after trigger operation. It is explanatory drawing which shows the state after a bullet movement start similarly. It is explanatory drawing which similarly shows the return state of a control valve apparatus. It is sectional explanatory drawing which shows an example of the single barrel gas gun to which the control valve apparatus which concerns on this invention is applied. It is sectional drawing which expands and shows the example of the control valve apparatus in the example of FIG. It is explanatory drawing which shows the effect | action after a cocking operation in the said control valve apparatus. It is explanatory drawing which shows the state which a bullet is similarly fired by operating a trigger and a control valve is moving. It is explanatory drawing which shows the state which the bullet is similarly fired and the control valve moves and has closed the barrel. It is explanatory drawing which shows the state which the control valve similarly returned to the original position from the obstruction | occlusion state by the ventilation means.

DESCRIPTION OF SYMBOLS 10, 10S Gas gun 11, 41 Gas gun main body 12, 42 Gas source 13, 43 Gas flow path 14, 44 Barrel 15, 45 Valve body 16 Air chamber 17, 47 Flow control part to which the control valve apparatus which concerns on this invention is applied 18, 48 Trigger 19 Shear 20 Striker 21 Guide shaft 22, 52 Control valve 23, 53 Space 24, 50 Nozzle assembly 24b, 54 Stop part 25, 55 Control valve device 26, 56 Sliding part 27, 57 Opening part 28, 58 Ventilation means 29, 59 Biasing means 31 Cartridge 32 Bullet passage 33 Bullet chamber

Claims (4)

A control valve device in a gas gun in which a gas source is connected to a loading part side of a barrel by a gas flow path, a valve element arranged in the gas flow path is opened by a trigger operation, and a bullet can be fired.
Adjacent to the loading part side of the barrel, the flow rate adjusting part set in the gas flow path,
A control valve incorporated in the flow rate adjustment unit so as to be movable in the direction of the flow channel by the gas flowing into the flow rate adjustment unit in order to suppress the firing speed as a tendency to close the gas flow channel after starting the bullet movement,
Urging means acting on the control valve so as to define the original position against the gas flow generated inside the barrel with the bullet firing, and the control valve is for returning to the original position. Has ventilation means to let the control valve downstream and upstream ,
The control valve device for a gas gun , wherein the small opening of the ventilation means is a normally open opening at the upstream end of the control valve. The flow rate adjustment part is formed with a larger diameter than the control valve, and has a stop part for receiving the control valve on the upstream side, and the downstream side leads to a sliding part for sliding the control valve,
The control valve has a hollow cylindrical structure opened on the barrel side. As a ventilation means for allowing gas to pass through the upstream side surface of the cylindrical gas flow path, the control valve has a small opening at the upstream end. And is biased by the biasing means in the upstream direction,
In a state where no gas flows in, the gas is passed through the ventilation means even in a state where the gas is allowed to pass through the opening and the gas is allowed to pass through the opening and the control valve is inserted into the sliding part up to a part of the opening. The control valve apparatus in the gas gun of Claim 1 comprised by these. A plurality of barrels and flow rate adjusting units are provided in parallel, and one gas flow path is branched into a plurality of flow rate adjusting units on the downstream side, and a control valve is incorporated in each flow rate adjusting unit. Even if only a part of the barrel is loaded with bullets, gas is prevented from leaking from a barrel not loaded with bullets, and even if several barrels are closed, 3. The control valve device for a gas gun according to claim 2, wherein a control valve connected to the loaded barrel is once closed to suppress an increase in bullet speed. The small opening of the ventilation means is a part of the opening provided on the upstream side surface of the control valve, and is connected to the downstream side of the flow rate adjusting unit at the step provided outside the control valve or at the entrance of the sliding part. The gas gun according to claim 2 or 3, wherein the gas flow is configured to maintain a gas flow without causing the opening to enter and close the sliding portion even when the control valve moves. Control valve device.

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