JP6640479B2 - Soft bullet for gravity feed simulation gun - Google Patents

Description

  BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a spherical bullet used for a simulated gun, and more specifically to a soft bullet dedicated to a simulated gravity feed gun.

  Some simulated guns have a simple structure commonly called a silver ball gun, and have been widely used especially for young children. It is characterized by the fact that a silver spherical bullet can be fired only by a trigger operation, as inferred from a common name, and does not require a complicated bullet supply mechanism or a firing mechanism.

  Bullets called silver balls are made of gypsum or clay having a diameter of about 7 mm. At present, among the bullets used in the simulation gun, there are plastic BB bullets, and there are also soft bullets using a more flexible material. However, even with those bullets, it is natural to feel a certain degree of shock if hit, and the same is true of a silver ball gun, although its power is weak.

  Therefore, the present inventor has developed a simulated gun system in which even when a bullet hits the skin of a person, the shot does not feel a shock. It is a completely new simulated gun, rather than a silver ball gun, and it has ultimate security. The present invention is designed as an optimal bullet for such a simulated gun.

  On the other hand, when the prior art was examined, no applicable or similar thing was found at all. There is no invention corresponding to the concept of a soft bullet or a soft bullet. The term soft is found in PCT / 2007-505286, and claim 16 describes a paintball, airsoft ball, "bb" or bullet, such as a pellet, but is described in the specification. Absent. Therefore, although the details are unknown, it is considered that it is hardly related to the present invention because it relates to the electric compressed air gun.

JP 2007-505286A

  SUMMARY OF THE INVENTION The present invention has been made in view of the above circumstances, and an object of the present invention is to provide a soft bullet dedicated to a simulated gravity-feeding gun capable of playing safely without injuring a person or an object even when hit. Another object of the present invention is to provide a soft bullet dedicated to a simulated gravity feed gun that is reliably supplied and fired despite being soft.

In order to solve the above-mentioned problem, the present invention takes a measure that, as a spherical bullet used for a simulated gun, the bullet body is formed by molding a plastic, and the plastic is made of a thermoplastic elastic body. It is a thing.
It is desired that the thermoplastic elastic body has a hardness in a range of 5 to 40 degrees in a measuring method according to JIS K6253A.

  The bullet body is formed by molding a plastic, but not all plastics can be molded by a molding method. As a result of trial and error, it has been found that the hardness of the thermoplastic elastic body applied to the soft bullet according to the present invention is appropriate in the range of 5 to 40 degrees in the measuring method of JIS K6253A.

  If the hardness is less than 5, it is difficult, if not impossible, to form, and the gate mark after separation from the runner becomes large. On the other hand, when the hardness exceeds 40, molding is facilitated, but for the purpose of the present invention, it is too hard to be appropriate. Note that the measurement method according to JIS K6253A specifies that a type A durometer intended for general rubber having a medium hardness that is neither high nor low is used.

  In particular, those having a bullet body hardness in the range of 8 to 12 degrees in the measuring method of JIS K6253A and having a fine powdered lubricant attached to the surface of the bullet body are the soft bullets according to the present invention. It is suitable as. Hardness issues are also related to the supply of soft bullets. When the hardness falls below 20 degrees, molding is possible, but the effect of friction between the bullet bodies that are in contact with each other or between the bullet body and the bullet supply path becomes remarkable, so that the supply of the bullet and the fired bullet are performed. There was a tendency that there was a major obstacle in how to fly. Accordingly, lubricants are used for the purpose of reducing bullet friction.

  Although the hardness of 8 to 12 degrees is suitable as the hardness of the soft bullet of the present invention, the influence of friction appears strongly as described above. Therefore, in order to reduce the effect of friction between the bullet bodies that are in contact with each other or between the bullet body and the bullet supply path, and to be able to supply soft bullets only by the action of gravity, the combined use of an antifriction agent is required. desired. Fine powders described below are suitable for the lubricant. The fine powder can be easily sprinkled and uniformly attached to the surface of the bullet body, and can be easily washed off if necessary.

  The plastic constituting the bullet body is mainly composed of SEBS (styrene-ethylene-butylene-styrene block copolymer), and the finely divided lubricant contains at least one or both of talc and starch. What is constituted is desirable. Plastics containing SEBS (styrene-ethylene-butylene-styrene block copolymer) as a main component are used as materials that are safe for the human body, for example, medical devices and toothbrushes, and are used as soft bullets according to the present invention. Is also preferred.

  Also, as the fine powdered lubricant belonging to the above, sky pollen, Siccarol (registered trademark), baby powder (registered trademark) and the like are suitable. Heavenly pollen is known to be based on yellow crow savory starch, and the latter two are known to be based on talc and starch. It should be noted that the lubricant can be applied to the bullet body at any time before the soft bullet is used.

  In addition, for example, a material such as silicone oil can be used, and it has been confirmed by experiments that the effect is effective. However, for example, Siccarol (registered trademark) and the like have obtained better results in reducing friction, and their safety to the human body has been confirmed by many years of use, and they are cheaper and more available. Easy.

  The bullet body is arranged vertically and horizontally, and there is a runner frame on all or part of the outer periphery of the above bullet body array, all bullets and bullets and runner frame are connected, and used one by one when used Such a configuration is preferable as the present invention.

  Since the present invention is configured and operates as described above, it is possible to provide a completely new soft bullet dedicated to a simulated gravity feed simulation gun by molding using a thermoplastic elastomer having extremely low hardness. It has the effect of being able to. The soft bullet according to the present invention is very soft and lightweight, but can be supplied only by gravity, and the soft bullet can be safely played without hurting a person or an object even when hit. The ultimate safety is demonstrated. Still further, according to the present invention, the contact friction with the bullet is reduced in spite of the fact that the bullet is soft, the bullet is reliably separated and fed, and the stable firing becomes possible, and accurate Trajectory can be obtained.

BRIEF DESCRIPTION OF THE DRAWINGS It is explanatory drawing which shows an example of the soft bullet for exclusive use of the gravity feed simulation gun concerning this invention, A is sectional drawing of one soft bullet, B is an external view of the soft bullet which consists of many pieces. It is explanatory drawing which shows the internal mechanism of the gravity feed simulation gun which uses the same soft bullet.

  Hereinafter, the present invention will be described in more detail with reference to the illustrated embodiments. FIG. 1 shows a soft bullet BB dedicated to a simulated gravity feed gun according to the present invention. The bullet body 1 is made of a plastic sphere. The soft bullet BB of the embodiment is a thermoplastic elastic body containing SEBS (styrene-ethylene-butylene-styrene block copolymer) as a main component.

  In the soft bullet BB in the embodiment, the hardness of the bullet body is in the range of 8 to 12 degrees in the measuring method according to JIS K6253A. Using the above-mentioned thermoplastic elastic body, one having a hardness of 8, 10 or 12 was injection-molded. Although there is not much difference in the experimental results of these three soft bullets, the one having the hardness of 10 degrees was particularly optimal in terms of the total balance of the formability, the friction reduction, the firing property, and the shocklessness. .

  Further, on the surface of the bullet main body 1 is attached a fine powdered lubricant 2 mainly composed of talc and starch. This lubricant 2 is obtained by sprinkling Siccarol (registered trademark) on a molded soft bullet and attaching it to the surface of the bullet body evenly. It is possible to attach the lubricant 2 even when it is connected to the runner frame 3 described below, but it is better to sprinkle them together before cutting them one by one and supplying them to the simulated gun. Would get.

FIG. 1B shows that the bullet bodies 1 are arranged lengthwise and breadthwise, and that all or a part of the outer periphery of the arrangement of the bullet bodies 1 has a runner frame 3. Shows what is connected. Branch runners 4 having different thicknesses are connected to the bullet main body 1 directly connected to the runner 3, and are configured to be separated and used one by one at the time of use.
<Experiment to confirm the effect>
In order to confirm a part of the effect of the soft bullet according to the present invention, an experiment was conducted to compare the power thereof, and the results are shown below. In the experiment, a soft bullet and a comparative BB bullet (having almost the same mass as the soft bullet) were caused to collide with the sensor section of the push gauge at the same initial velocity, and the collision energy was measured. (The lubricant was Siccarol (registered trademark).) It was used.).
<Experiment conditions>
・ Soft bullet mass 0.109g (average of five shots)
・ Soft bullet hardness 10 degrees (JIS K6253A)
・ BB bullet mass (comparative example) 0.114 g (average of five shots)
・ Injection initial velocity 60m / s
・ Sensor position 1cm from muzzle
・ Launching device Adjusted air cocking gun <Experimental results>




Table 1

Unit: Newton (N)
According to Table 1, the kinetic energy obtained by firing the soft bullet of the present invention under the above-described experimental conditions is 1.53 N as an average value of five times. On the other hand, the kinetic energy obtained by firing a BB bullet under the same experimental conditions is also 2.86N. The projectiles should have approximately the same value as the projectile mass, and therefore the work should show approximately the same value. However, the kinetic energy of the soft projectile according to the present invention obtained by the push gauge is only 53% of that of the comparative example. ing. This indicates that the soft bullet was compressed by the impact on the sensor, and its deformation consumed energy. Therefore, the external force exerted on the human body is extremely small. For reference, when the soft bullet according to the present invention hit the palm of the hand, the results of interviewing a large number of people including young people showed that almost no touch was felt by the bullet without exception. .

  Such a soft bullet BB according to the present invention is used for a simulation gun belonging to a so-called silver ball gun. FIG. 2 shows a particularly improved simulated gun 10. Numeral 11 denotes a space in which a bullet bore, that is, a bullet B to be fired passes, and a bullet portion 12 is set in an inner portion thereof. Certain muzzles 13 open outwardly.

  The loading section 12 has a bullet holder 12a for holding the supplied bullet B until firing. The bullet holder 12a is formed of a ridge sufficient to temporarily stop the bullet, and is provided on both left and right side surfaces of the bullet portion 12. Either one or both of the bullet B and the bullet holder 12a are formed of a material that can be pushed by the advancing striker 15 and deformed to pass the bullet B, such as nylon (registered trademark) or rubber. ing.

  Therefore, even if the bullet is as hard as a general BB bullet, the bullet holder 12a can elastically deform and pass when struck by the striker 15 described later. In the case of a soft bullet that deforms when pressed by a fingertip, the soft bullet can be elastically deformed and pass through.

  The rear of the gun cavity 11 is continuous as a striker moving path 14, and a striker 15, which will be described later, is provided so as to be able to advance and retreat. When the striker 15 retreats, the striker 15 moves down to a position behind the bullet feed port. When the striker 15 moves forward, the front end of the striker 15 reaches the bullet loading portion 12 and strikes the bullet B. Above the striker movement path 14, there is a supply path 16 to which the bullets B are adjacently supplied by gravity to the loading section 12.

  As a means for gravity feed, the supply path 16 is composed of a rear part composed of a horizontal part and a front part composed of an inclined surface. The leading end of the supply path 16 constitutes a bullet hole 17 for dropping a bullet B into the bullet portion 12, and a bullet feed port 18 is formed at the rear end thereof, so that a required number of bullets B can be filled therebetween. I have. The front part of the supply path 16 changes its direction from the inclined surface to the bullet hole 17 through a smooth curved surface and almost vertically (for this reason, the bullet hole 17 is also slightly narrowed), and the inclined surface on which the bullet B slides down. Is provided with a separating member 20 at a part thereof.

  The separating member 20 is rotatably provided by a support shaft 19 at the upper end of the rear end, so that the lower end of the cutting member 20 enters and exits the striker moving path 14 and the supply path 16. When the striker 15 retreats, the separating member 20 is locked by a stopper 21 provided in a portion also serving as an upper frame of the striker moving path 14, and does not open any more. When the striker 15 moves forward, the upper surface of the striker 15 slides. In this state, the distal end side of the separating member 20 enters the supply path 16 to narrow the loading hole 17 and stop the movement of the bullet B halfway. Have been.

  A trigger 22 is provided as a bullet firing mechanism. The trigger 22 is provided with a slide member 23 integral with the trigger 22 so that a forward / backward moving portion 24 provided on the gun body side can be moved forward and backward. An engagement member 25 is attached to the slide member 23 so as to be rotatable around a support shaft 26. An engagement portion 27 of the engagement member 25 is connected to an engagement partner 28 provided on the striker 15 as described later. It is in an engagable relationship.

  That is, the operation of pulling the trigger 22 causes the engagement portion 27 and the engagement partner portion 28 to engage with each other, retreating the striker 15, and disengaging from the engagement partner portion 28 by the rotation of the engagement portion 27. Is provided so as to allow the striker 15 to move forward. Therefore, the striker 15 compresses the main spring 30 at the time of retreat, and moves forward instantaneously with the spring force accumulated thereby.

  The rear spring receiver 29 of the main spring 30 is provided on the gun body side, and the front spring receiver 31 is provided on the rear end of the striker 15. The forward spring receiver 31 has a forward limit defined by using the structure 32 inside the gun body as a stopper.

  Since the soft bullet according to the present invention is configured as described above, it can be appropriately gravity-fed and fired. The simulated gun of FIG. 2 particularly includes means for completely mechanically separating the bullet at the firing position from the next bullet, thereby cutting off the influence of the next bullet and obtaining the straightness of the bullet and flying. The performance is improved by increasing the distance. Therefore, the soft bullet BB according to the present invention does not have to use the simulated gun shown in FIG. 2, but can also be fired by using a conventional silver ball gun having a gravity feed structure.

BB Soft bullet for gravity feed simulation gun 1 Bullet body 2 Lubricant 3 Runner 4 Branch runner 10 Simulator gun 11 Gun cavity 12 Loading section 13 Muzzle 14 Striker moving section 15 Striker 16 Supply path 17 Shot hole 18 Supply hole 19, 26 Support shaft 20 Separating member 21 Stopper 22 Trigger

Claims (3)

A spherical bullet used for a simulated gun,
The bullet body is formed by plastic molding,
The plastic is made of a thermoplastic elastic material,
The thermoplastic elastic body has a hardness of 5 to 40 degrees in the measurement method of JIS K6253A so as not to hurt a person or an object even when hit,
The plastic that constitutes the bullet body is mainly composed of SEBS, and a lubricant is attached to the surface of the bullet body, and the lubricant is in a fine powder form. Both talc and starch are used. A soft bullet dedicated to a simulated gravity feed gun characterized by comprising: 2. The soft bullet for a simulated gravity feed gun according to claim 1, wherein the hardness of the bullet body is in a range of 8 to 12 degrees in a measuring method according to JIS K6253A. The bullet bodies are arranged vertically and horizontally, and there is a runner frame on all or a part of the outer periphery of the bullet body array. All bullets are connected to each other and the bullet and the runner frame are connected and used one by one when used. 3. The soft bullet for a simulated gravity feed gun according to claim 1 or 2, wherein

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