JP6691331B2 - Cartridge attached to Fukiya - Google Patents

Description

  BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a cartridge loaded with gunpowder, which is attached to the tip of a blowing arrow for the purpose of threatening birds and animals, and its structure.

  Conventionally, a beast-judder using gunpowder is a fixed device as described in "Patent Document 1", a rocket fireworks described in "Patent Document 2", and a toy gun that emits sound near human hands. Firecrackers were common. Bullets similar to those in "Patent Document 3" are not included in the general-purpose category, but fall within the category.

Re-table 2005/044000 No. JP 2012-013367 Public announcement of Shokai 55-0293340 Japanese Patent No. 49110074

Takashi Nozu, "Points for Countermeasures against Birds and Beasts," Taisei Publishing Co., Ltd., July 30, 2011 p. 38

  The prior art “Patent Document 1” may explode even in a situation where there are no birds and beasts at the installation site. "Patent Document 2" is not surprising because it is noticed by the sound of emission and smoke, and the explosion position also occurs in the air or after it has escaped, which causes a time lag in the explosion. In "Patent Document 3", the required explosion sound cannot be obtained due to the insufficient amount of gunpowder. The toy guns and firecrackers possessed by humans diminish the threat and psychological shock caused by being too far away from birds and beasts.

  In order to fight off the birds and beasts, it is necessary to make a sudden explosion sound at your feet and give a big startle to make you recognize that this is a dangerous place.

  INDUSTRIAL APPLICABILITY The present invention takes advantage of the characteristics of a blowgun that can shoot explosive powder into the feet of a guarded bird or beast with a small sounding sound to create a sudden explosion sound.

  The reason why the concept of loading gunpowder with gunpowder is rare in the history is that blowgun has been treated as a hunting tool for a long time. It is presumed that a drug that paralyzes small animals is applied to the tip and fired, and it is speculated that the idea of driving away an animal with a gunpowder that sounds was not born. In addition, since the sound of the blow is small, it seems that there was no idea that a special person such as a ninja used it as a weapon for assassination or the like to make a sound and identify the whereabouts. INDUSTRIAL APPLICABILITY The present invention utilizes the characteristics of Fukiya in a field other than hunting called bird and beast threatening, and creates a very new existence value as a tool for bird and beast threatening.

  In such a manner, the present invention has two problems, as a blowing arrow for birds and beasts, to regard the loading position of gunpowder and the maintenance of flight performance of the arrow.

  The first aspect of the present invention is that the explosive arrow is not disposable and is always used repeatedly. Therefore, as a measure for protecting the arrow, the explosive is separated from the arrow and loaded into the cartridge described in "Claim 1".

  The second aspect of the present invention focuses on the high flight performance of the arrow, and integrates the cartridge described in "claim 2" and the arrow into an integrated structure for maintaining the flight performance of the arrow.

  The invention described in "Claim 1" is that the gunpowder is loaded on the cartridge side to protect the arrow, and the arrow can be reused a plurality of times.

  The invention described in "Claim 2" makes it possible to accurately shoot gunpowder into the feet of birds and animals due to the effect of maintaining the flight performance of the arrow having an integrated structure.

Side view of cartridge Side view of integrated structure Cross section of integrated structure Enlarged view of section taken along line A in FIG. Enlarged view with the C position in FIG. 3 as the center

  The cartridge of the present invention realizes the reuse of arrows multiple times and the maintenance of flight performance with a minimum number of parts and a simple structure. Embodiments of the present invention will be described below with reference to the drawings.

  The structure of the cartridge is cylindrical, and as shown in FIG. 1, it is composed of a tip portion filled with explosive powder, a hollow central portion, and a cut portion formed with a cut parallel to the cylindrical surface from the rear cylinder port.

  The metal pin at the tip of the arrow is located in contact with the explosive at the tip of the cartridge, as shown at 10 in FIG.

  The cut portion 3 of the cylindrical surface of FIG. 1 is pushed out by the cone 8 of the arrow to open as shown by 9 in FIG. 2, and the circular shape of the cross section of the cylinder becomes the arc of the deformed shape shown at the E position in FIG.

  Since the synthetic resin, which is the material of the cartridge, has elasticity, it has the property of returning to its original shape when deformed by the applied force. FIG. 4 is an enlarged view of a cross section taken along line A in FIG.

  At the deformed arc portion E position in FIG. 4, a force to return to the original circular shape is generated. Therefore, in this arc portion, the action of gripping the conical surface D position of the arrow by the inward force works, and the arc closely contacts the arrow.

  Further, at the position C in FIGS. 3 and 5, the cylindrical surface of the cartridge is pushed and bent by the arrow cone 8 and bent outward. In the bent portion, a force to return to the original state is generated, and the action of sandwiching the arrow by the inward force parallel to the generatrix of the conical surface works and sticks to the arrow.

  On the conical side of the arrow located inside the cartridge, reaction forces that repel the above-mentioned two actions are generated, and the action of pushing back the respective forces causes them to come into close contact with the cartridge.

  As a result, the arrow and the cartridge stick to each other, and the boundary portion between the cartridge and the arrow comes into close contact with each other so that there is no gap and the air resistance is reduced to form an integrated structure.

  What is important in the present invention is an integrated structure for the purpose of maintaining the number of times of arrow reuse and flight performance. Hereinafter, the effect will be verified by the verification experiment of the present invention.

  In recent years, Fukiya has become popular as a sport in society, and the flight performance of arrows has been dramatically improved by "Patent Document 4". Fukiya competitions for accuracy of hits are generally represented by competitions sponsored by the Japan Sports Fukiya Association. Therefore, the arrows used in the verification experiments shown below were those approved by the association with high flight performance. The experimenter was a standing man with a man of three ranks.

  The cartridge used was a straw tube made of propylene-pyrene, which had a diameter of 4.5 mm, a length of 70 mm, and a cut length of 23 mm, and the explosive used was a commercially available cap explosive.

  The following are the results of verification experiments for confirming the effects of the present invention.

The following table shows the results of the usable number of times of the reuse of the arrow of the integrated structure for multiple times.

  As shown in the table above, 5 integrated arrows were verified. The average usable number of times that the arrow was damaged by the explosive explosion and the coating peeling at the tip was recognized was 33.8 times. In addition, after the film of the arrow film was peeled off, the film could be fired by returning the twist due to impact, and the maximum number of reuses was 153.

The table below shows the results of experiments in which the air resistance, which is an index of flight performance, was quantified by the flight distance.

  As shown in the above table, the average flight distance of 10 arrows of the integrated structure was 56.3 m, and the performance was 94.1% of the average flight distance with 100% of the unattached arrows.

The table below shows the results of experiments comparing the straightness, which is an index of flight performance, with points. The target distance is 10 m, and the point is 6 cm in diameter from the center of the target, 7 points in diameter, 5 points in 12 cm, 3 points in 18 cm, and 1 point in 24 cm.

  As shown in the above table, the total score of the five arrows of the integrated structure was 172, and the accuracy rate of 94.5% of the total score when the average score of the unattached arrows was 100% was maintained. This score corresponds to the 4th grade passing grade of the Japanese Sports Fukiya Association, and it can be said that the straightness is very high.

  As a result of the verification experiment, it was possible to reuse the arrow of the integrated structure 33 times or more, and the air resistance and the straightness were 94% or more of those of the unattached arrow, demonstrating that a certain flight performance could be maintained.

  The diameter and length of the cartridge of the present invention, the length of the cut, the material and decoration, the quality and quantity of the explosive, the shape of the tip, etc. are not limited to the shape of the integrated structure described in "Practical example 1".

  Objects that are specified as targets are hard materials such as tree trunks and roots around animals, galvanized iron plates, rocks, block walls, and utility poles. On a horizontal surface, it can be launched on solid soil, concrete, asphalt, tiles, control panels, iron plates, etc. at an elevation angle of 45 to 60 degrees, and an explosion can occur at a point more than 50 m away.

  Even if you accidentally hit a small animal such as a sparrow, a pigeon, or a cat, not only will it not explode due to insufficient impact force, but it will not cause damage due to the flat tip. However, some surprises and pains can be given, which can be a threat to wildlife.

  The cartridge of the present invention has a simple structure and a simple manufacturing process, and the productivity cost thereof is extremely lower than that of a normal bird and beast threatening tool using gunpowder.

  Also, due to the collection effect of reused arrows, the thrown arrows do not become left-over trash and contribute to environmental conservation activities.

  The sound of explosion can be obtained by hitting a hard object, so it can be applied and enjoyed with gameplay at guns, cues, ceremonies, celebrations, various events and competitions.

  The cartridge of the present invention has many elements that give birth to many industrial ideas and designs, such as modified mounting methods, development of launching devices and tools, arrow colors and patterns, and application to bows and arrows.

1 Gunpowder 2 Center part of cartridge 3 Notch 4 Rear tube mouth 5 Metal pin 6 Arrow in cartridge 7 Cartridge and arrow close contact part 8 Arrow cone 9 Cut part pushed open by conical surface 10 Explosive and pin contact point A Figure Cutaway position of the sectional view shown in FIG. 4 B Cylinder surface of the cartridge C Bent portion of the cylinder surface D Conical surface of the arrow E Erect circular arc portion of the cut portion

Claims (2)

In a cylindrical cartridge to be attached to a blown arrow having a metal pin at the tip, a gunpowder is loaded at the tip, inserted from the tip of the arrow so that the gunpowder and the metal pin come into contact , and integrated with the arrow. A cartridge having a structure in which the explosive explodes due to the impact of flying and colliding with a hard object.   In a cartridge that has a cut parallel to the cylindrical surface from the rear tube mouth, the cylinder whose shape has changed due to the conical surface of the arrow when inserting the arrow grips and clamps the conical surface of the arrow by the force to return to the original shape. 2. The cartridge according to claim 1, wherein the cartridge has a structure in which the cartridge and the arrow are in close contact with each other to reduce air resistance.

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