JP2006292266A - Valve device for toy gas gun - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To attain an increase in power which leads to quicken blow-back operation or a higher bullet shooting speed under a restriction that the size of a valve device is controlled within a gun body of a size equal to or smaller than an actual gun size. <P>SOLUTION: In the valve device for controlling gas flow in a gas passage in a toy gas gun including a gas source supplying compressed gas and the gas passage connecting the gas source to an operation part, a valve shaft 20 is arranged in a gas outflow part between the gas source 11 and the gas passage 13, so that gas outflow can be controlled according to the forward and backward moving operation thereof, and the valve shaft 20 is energized in the direction for closing the gas outflow part by an energizing means 23. The device further comprises a stopper for regulating the moving limit of the valve shaft 20 and arranging the valve shaft 20 in a close position. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to a valve device in a toy gas gun having a gas source for supplying compressed gas, a gas passage communicating between the gas source and an operating portion, and controlling a gas flow in the gas passage.

  In a toy gas gun that uses compressed gas as a power source for performing operations such as blowback operation and bullet firing in a toy gun, its general structure is as shown in FIGS. . 6 to 8, a is a gas reservoir, b is a valve shaft, c is a valve case, d is a valve plate at the front end of the shaft, e is a head at the rear end of the shaft, f is a spring, and the valve shaft b is closed. Energize in the valve direction. The valve case c is provided with several gas outlets g, which pass through the groove h outside the case and outside the case. When the valve is opened, the gas flowing into the valve chamber flows out to the gas passage i through the gas outlet g and the groove h. It is supposed to let you. By providing several gas outlets g, it is intended to ensure a sufficient gas flow rate and to smoothly perform the operation as described above using compressed gas.

  However, in the above apparatus, the valve shaft b is positioned by the seal member k indicated by the O-ring, and this configuration is an obstacle when performing the blowback operation or increasing the firing speed. Turned out to be. That is, in order to increase the speed of the operation, it is necessary to increase the amount of gas used for one operation. For this purpose, when the inner diameter L of the valve chamber is enlarged (FIG. 7), it acts on the valve plate d. The seal member k that cannot be increased in size because of increased pressure is elastically deformed, and the head e at the rear end of the shaft is retracted, causing a problem that it protrudes rearward from the reference position m (FIG. 8). When the valve shaft moves backward and protrudes, problems such as obstructing or removing the magazine to which the valve device is attached, or interfering with the hammer and hindering the work are caused. Further, when the inner diameter L of the valve chamber is enlarged, there is no room for the outer peripheral groove h, and it is difficult to increase the gas flow rate.

JP-A-11-344298

  The present invention has been made paying attention to the above points, and the problem is that it is possible to increase the speed of the blowback operation and the bullet under the restriction that it is housed in a gun body of the same size or smaller than that of an actual gun. It is to realize power-up that leads to higher launch speed.

  In order to solve the above-mentioned problems, the present invention has a gas source for supplying compressed gas, a gas passage for communicating the gas source and the operating portion, and a valve in a toy gas gun for controlling the gas flow in the gas passage. For the device, a valve shaft is arranged at the gas outlet part located between the gas source and the gas passage so that the gas outlet can be controlled with the forward and backward movement, and the valve shaft is urged in the direction to close the gas outlet part. The means is urged by the means, the movement limit of the valve shaft is defined, and a stopper for disposing the valve shaft in the closed position is provided.

  The gas source is a supply source of compressed gas, and can be configured to be configured in a magazine detachably provided in the grip portion of the gun body, for example. This magazine is a magazine for an actual gun, and is a part used for a bullet storage part called a BB bullet in the toy gas gun of the present invention. It can be used as a tank for gas filling. However, the gas source is obviously not limited to the magazine, but may be other methods. In short, any gas source may be used as long as it supplies gas to the operating portion through the gas passage.

  An operation part is a part which performs some operation | movement in a toy gas gun using the compressed gas supplied from the gas source, for example, points out what performs the above-mentioned blowback operation | movement or a bullet firing operation | movement. The gas source and the operating part are connected by a gas passage, and the valve device of the present invention is provided to control the gas flow in the gas passage. In the present invention, the gas outflow part is set between the gas source and the gas passage as a part of the valve device. In the gas outflow portion, a valve shaft is arranged so that the gas outflow can be controlled as the valve shaft advances and retreats, and further, the valve shaft is urged by the urging means in the direction of closing the gas outflow portion. Up to this point, the configuration is also found in the conventional valve device. In this invention, a gas outflow part is located between the gas source which ejects compressed gas, and the gas channel which sends the ejected gas to an action | operation part. In other words, the gas outflow part may be considered as a reference for setting the upstream side of the gas outflow part as the gas source side and the downstream side as the gas passage side rather than being uniquely determined.

In the present invention, a stopper is provided in order to define the movement limit of the valve shaft by the urging means and to set the movement limit position to a closed position with respect to the gas flow by the valve shaft in the gas outflow portion. The stopper regulates the movement limit of the valve shaft to prevent excessive deformation even when the seal member is an elastic ring such as an O-ring in the state where the valve shaft is arranged in the closed position. The head at the other end of the valve shaft can be arranged at a position hit by a hammer. Such a stopper is for the purpose of defining the position of the valve shaft in the gas outflow portion to be constant, and can be formed, for example, on the valve shaft itself, and an example shown later has this structure. In addition, a method in which another member is attached to the valve shaft to form a stopper can be used.

  In many cases, the gas outflow part of the toy gas gun to which the present invention is applied is provided with a valve case having a hollow valve chamber. In that case, the valve case is located at the front end opening located on the gas source side, on the gas passage side A side opening located on the communicating side face is provided, and several side openings are usually provided in the periphery in order to ensure a necessary gas flow rate (the invention according to claim 2). However, in the present invention, when the expansion of the inner diameter of the valve chamber is necessary to increase the gas flow rate for the purpose of increasing the blowback operation or the bullet firing speed, the valve case itself is increased in size. There is a case where there is no room for providing the groove portion seen in the structure. In such a case, in the present invention, only one side opening can be provided with a larger size than before.

Grooves found in the structure so far are necessary if they are totaled even if the side opening does not coincide with the outlet to the gas passage when a valve case having a plurality of side openings is screwed in. This is in line with the idea that the gas flow rate can be secured. However, when only one side opening having a larger size as described above is provided, the position needs to coincide with the outlet to the gas passage. For such a case, in the present invention, the valve case is divided into two front and rear members, and the front member provided with the side opening is attached by insertion, thereby facilitating the alignment of the side opening while passing the valve shaft. It is desirable that the rear member provided with the shaft hole is attached by screwing and the front member can be fixed by the screwing (the invention according to claim 3).

  Since the present invention is configured and operates as described above, it is under the restriction of a valve device that can be accommodated in a gun body of the same size as an actual gun, and a stopper is provided to accurately adjust the valve shaft. Since it can be arranged at the closed position, it is possible to increase the gas flow rate, and to achieve a power-up that leads to a higher blowback operation and a higher bullet firing speed.

  Hereinafter, an embodiment of a valve device in a toy gun of the present invention will be described with reference to the drawings. The toy gun 10 shown in the figure is modeled on a hand gun commonly called an automatic pistol, etc., 11 is a tank as a gas source, and most of the internal space of the magazine or magazine 12 shown in FIG. is occupying.

  A gas outflow portion located between the gas source 11 and the gas passage 13 is set in an upper portion of the tank, that is, the gas source 11, and a valve case 15 having a hollow valve chamber 14 is provided in the gas outflow portion. Yes. The valve case 15 has a front end opening 16 located on the gas source side, a side opening 17 located on the side surface leading to the gas passage side, and a closing portion 18 located on the rear side of the side opening 17. A through hole 19 is provided, and a valve shaft 20 is incorporated therein so as to be able to advance and retreat. The valve shaft 20 has a valve plate 21 disposed at one end of the valve chamber at one end and a head 22 disposed outside the valve chamber at the other end, and is contracted between the closed portion 18 and the head 22. The head 22 is biased in the direction of closing the gas outflow by a spring of the biasing means 23 provided, and the head 22 is disposed at a fixed position where it is hit from the hammer 24 via the valve knocker 25. Reference numeral 26 denotes a front seal member for the front end opening, which can slide on the inner peripheral surface of the front end opening 16. Reference numeral 27 denotes a rear seal material that seals between the valve shaft 20 and the valve case 15, and the valve case 15 is sealed by seal members 28 and 29 provided between the inner surface of the tank 11.

As a valve device having such a configuration, in the drawing, a first example (the one in FIG. 3) having the groove portion 34 closest to the conventional example and a second example (the one in FIG. 4) having no groove portion 34 are shown. A description will be given using a third example (the one in FIG. 5) having a valve case divided into two front and rear members. In the case of the first example shown in FIG. 3, the inner diameter of the valve chamber 14 of the valve case 15 is absolutely larger than that of the conventional one so that the gas flow rate can be increased. The valve shaft 20 is provided with a stopper 30 that stops the valve shaft 20 from moving backward. The stopper 30 is pressed against the front surface of the closing portion 18 by the urging means 23 to define the limit of movement of the valve shaft 20 in the backward direction, and the rear head 22 protrudes to a certain position. It is in a state of being hit by the hammer 24 via 25. Note that the gas outflow is closed by the front seal member 26 at the movement limit.

  Accordingly, the trigger 31 is pulled, and the hammer 24 strikes the link lever 32 so that the valve knocker 25 strikes the head 22 of the valve shaft 20 and pushes out the valve shaft 20 against the urging means 23, thereby the front seal member. Since 26 is away from the tip opening 16, the compressed gas is supplied to the operating portion 35 through the valve chamber 14, the side opening 17, the groove 34, and the gas passage 13. In the illustrated actuating part 35, the compressed gas reaches the bullet loading part 38 from the movable valve 36 through the front gas passage 37, and flows into the cylinder 42 through the rear gas passage 41 through the operation for firing the bullet 39. It is configured to perform approximately two operations of a so-called blow back operation of the slide 40 that pressurizes 43 and moves the slide 40 integral with the piston 43 backward. Since the pressure in the gas passage returns to the atmospheric pressure by firing the bullet 39 and starting the blowback operation of the slide 40, the valve shaft 20 returns to the closed position by the pressure of the compressed gas of the gas source 11, and at this time, the stopper 30 Fixed position placement is performed.

  In the case of the second example shown in FIG. 4, the groove portion 34 of the first example is not provided, and the size of the valve case 15 'and the relative expansion of the inner diameter L of the valve chamber 14' can be made correspondingly. As a result, the wall thickness t of the valve case 15 'is the minimum necessary. Although a plurality of side openings 17 'are provided but there is no groove, the other side openings excluding the side openings 17' on the gas passage side have no function of communicating with the gas passage 13, and only serve to increase the gas capacity. Other configurations may be the same as those in FIGS. 1 to 3, so that reference numerals are used and detailed description thereof is omitted. 4 and 5 illustrate the valve open state.

  In the second example, since the inner diameter L of the valve chamber 14 'is enlarged and also the capacity of the side opening 17', a larger amount of compressed gas flow that can be consumed in one firing operation can be taken in. ing. In the second example, the valve shaft 20 is stopped by the closing portion 18 by the urging means 23 and disposed at the determined closed position as described above. However, the trigger operation is performed by increasing the gas flow rate. The operations of bullets, firing, and blowback are more quickly and powerfully performed.

  The third example shown in FIG. 5 is an example in which the valve chamber 14 ″ having a relatively enlarged inner diameter L ′ is provided, and only one side opening 17 ″ that is enlarged accordingly is provided. In order to adjust the position of this to the position of the gas passage 13, a valve case 15 ″ divided into two members, a front member 15a and a rear member 15b, is provided. For this reason, the front member 15a is first fitted in the gas outflow portion of the tank 11, the position of the side opening 17 ″ is adjusted to the position of the gas flow path 13, and then the rear member 15b is screwed and fixed. In the above description, the valve cases 15, 15 'and 15b are screwed in in the same manner as in each example, but in the third example, the side opening 17 "can be remarkably easily aligned. Other configurations may be the same as those shown in FIGS. 1 to 4, so that reference numerals are used and detailed description thereof is omitted. In addition, the screwing part common to each example is shown with the code | symbol 45. FIG.

  In the case of the third example, a faster blowback operation with a gas flow rate that can be increased and a more powerful bullet firing capability are provided, and the degree of the power-up is considered to be substantially determined by the valve chamber inner diameter L ′. This is almost the same as in the second example. As is common to each example, the front shape of the stopper 30 is an inclined surface 30a, and the gas flow is guided so as to smoothly flow to the side openings 17, 17 ′, 17 ″.

As described above, according to the present invention, by providing the stopper 30, the movement limit of the valve shafts 15 can be regulated to improve the operation accuracy, and the blowback operation and the bullet firing speed can be increased. The Further, since the power flow can be increased by expanding the valve chamber 14 and improving the gas flow by the inclined surface 30a in front of the stopper 30 occupying a large area, the effect of improving the performance of the stopper 30 is great. Even if the stopper is newly provided, the other configurations of the valve shaft 15 are not changed, and the head 22 can be attached to the shaft end by means such as screwing, press-fitting, or adhesion.

Side surface sectional explanatory drawing of the toy gun to which the valve apparatus which concerns on this invention is applied. Side surface explanatory drawing of the magazine which similarly attached the valve apparatus. The principal part sectional drawing which shows the 1st example of the valve apparatus which concerns on this invention. The principal part sectional drawing which shows the 2nd example similarly. The principal part sectional drawing which similarly shows the 3rd example. Sectional drawing which shows the conventional example 1. Sectional drawing which shows the conventional example 2. Sectional drawing which shows the conventional example 3.

Explanation of symbols

DESCRIPTION OF SYMBOLS 10 Toy gun 11 Tank as gas source 12 Magazine 13 Gas passage 14, 14 ', 14 "Valve chamber 15, 15', 15" Valve case 16 Tip opening 17, 17 ', 17 "Side opening 18 Closure part 19 Through-hole 20 Valve shaft 21 Valve plate 22 Head 23 Spring as urging means 24 Hammer 25 Knocker 26, 27, 28, 29 Seal member 30 Stopper 35 Actuating part 45 Screwed part

Claims (4)

A valve device in a toy gas gun for controlling a gas flow in a gas source having a gas source for supplying compressed gas, a gas passage communicating between the gas source and an operating unit, A valve shaft is arranged in the gas outflow section in between, and the gas outflow can be controlled with forward and backward movement, and the valve shaft is urged by the urging means in the direction to close the gas outflow section, and the valve shaft moves A valve device for a toy gas gun, characterized in that a limit is provided and a stopper for disposing the valve shaft in a closed position is provided. The gas outflow part is provided with a valve case having a hollow valve chamber. The valve case has a front end opening located on the gas source side, a side opening located on the side surface leading to the gas passage side, and a rear part from the side opening. The valve device for a toy gas gun according to claim 1, further comprising: a closing portion positioned at a position where the valve shaft is provided in a hole penetrating the closing portion so as to be capable of moving forward and backward. The valve case has one enlarged side opening, the valve case is divided into two front and rear members, and the front member provided with the side opening is attached by insertion, thereby facilitating the alignment of the side opening. 3. The valve device for a toy gas gun according to claim 2, wherein the rear member provided with the shaft hole through which the valve shaft is passed is attached by screwing and the front member can be fixed by screwing. The valve shaft has a valve plate disposed at one end of the valve chamber at one end and a head disposed outside the valve chamber at the other end, and the head is disposed at a fixed position to receive impact from a hammer. The valve device in the toy gas gun according to claim 1.

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