JP2003177000A - Cracker - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a cracker capable of easily connecting a pressure receiving body and an explosive body receiving seat with a cord body without causing blast pressure leakage by elaborating a cord member installation means with respect to the pressure receiving body and the explosive receiving seat. <P>SOLUTION: Inside a cylindrical body 1 having a discharge port 2 at a front end, this cracker is provided from the rear side to the front side with the explosive body receiving seat 4, an explosive body 3 exploded by pulling a pull-cord 5, the pressure receiving body 8 launched to the discharge port 2 by receiving explosion energy of the explosive body, and a discharged material 9 blown off to the discharge port 2 by receiving the impact of the pressure receiving body 8. A cord installation part piece 12 to which an end part 11a of the cord member 11 is fastened is provided on a rear side of the pressure receiving body 8, and a cord installation part piece 13 to which an other end part 11b of the cord member 11 is fastened is provided on a front side of the explosive body receiving seat 4. <P>COPYRIGHT: (C)2003,JPO

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an improvement of a cracker in which an explosive body explodes due to a pulling operation of a drawstring, and the explosive expels explosive substances such as confetti and small tapes into the air.

[0002]

2. Description of the Related Art An example of this type of cracker is disclosed in Japanese Patent Laid-Open No. 11-230700. As shown in FIG. 6, the explosive body seat 24, the explosive body 23 that explodes by pulling the pull cord 25 in this order from the rear to the front, inside the tubular body 21 having the discharge port 22 at the front end, The pressure-receiving body 28 that receives the explosive energy of the explosive body 23 and fires in the direction of the discharge port 22, and the discharge object 29 such as confetti and small tape that is blown toward the discharge port 22 when the pressure-receiving body 28 collides. Is stored and deployed,
The pressure receiving body 28 and the explosive body receiving seat 24 are connected by a string member 31. At the time of the connection, string passing holes 32 and 33 are formed in the pressure receiving body 28 and the explosive body receiving seat 24 respectively in a penetrating manner in the front-rear direction, and one end portion 31a and the other end portion 31b of the string member 31 are passed through the respective string passing holes. It fastens through the holes 32 and 33.

When the pressure receiving body 28 is in the starting position before firing, the cord member 31 is loosened as shown in FIG. 6 and has a predetermined expansion margin, and as shown in FIG. 7, the pressure receiving body 28 is released at the time of firing. When the cord member 31 is moved to the outlet 22, the cord member 31 loses its slack and extends, so that the pressure receiving body 28 does not jump out of the outlet 22 and stops inside the outlet 22. According to this, the danger due to the pressure receiving body 28 popping out is eliminated, and smoke or odor generated due to the explosion of the explosive body 23 is generated between the pressure receiving body 28 and the explosive body seat 24 in the tubular body 21. Is confined in the space and the sound caused by the explosion is also silenced in the cylindrical body 21. Therefore, even in places such as theaters, halls, and homes where it is not desirable to make loud noises, or where smoke or odor generated by the explosion of explosives is disliked, fly confetti or small tapes to a distance. You can enjoy crackers.

[0004]

However, the pressure receiving body 28
Also, in the above cracker in which the string passing holes 32 and 33 are formed in the explosive body receiving seat 24 in a penetrating manner in the front-back direction, not only the string member 31 is difficult to pass through the string passing holes 32 and 33, but also the explosive body 23 of The blast pressure resulting from the explosion may leak from the pressure receiving body 28 and the string passing holes 32 and 33 of the explosive body receiving seat 24, which reduces the pressure receiving efficiency of the pressure receiving body 28, and the speed of the pressure receiving body 28 decreases. Since the collision force applied to the emitted object 29 is attenuated by this deceleration amount, the flight distance of the emitted object 29 cannot be sufficiently obtained.

Therefore, an object of the present invention is to solve such a problem, and the pressure receiving body and the explosive body are made by devising the means for attaching the cord member to the pressure receiving body and the explosive body seat. It is possible to easily connect the seat with the string member without causing blast pressure leakage, so that the pressure receiver and the explosive body seat can be easily connected by the string member, and the pressure receiving efficiency of the pressure receiver can be improved. An object of the present invention is to provide a cracker that can improve the flight distance of a substance to be emitted.

[0006]

DISCLOSURE OF THE INVENTION The present invention relates to an explosive body which explodes in a cylindrical body having a discharge port at a front end thereof from a rear side to a front side in order from a rear side to a front side, and an explosive body exploding by a pulling operation of a drawstring. The pressure receiving body that emits the explosive energy of the body in the direction of the discharge port, and the discharge object that is blown toward the discharge port when the pressure receiving body collides are housed and arranged. In the cracker that connects the seat with a string member, a string attachment piece to which one end of the string member is fastened is provided at the rear side of the pressure receiving body, and the other side of the string member is provided at the front side of the explosive body seat. It is characterized in that a string attachment piece to which an end portion is fastened is provided respectively.

In this case, the cord mounting portion of the pressure receiving body projects rearward from the rear end portion of the pressure receiving body, and the cord mounting portion piece of the explosive body seat is forward of the frontmost end portion of the explosive body seat. It can be provided so as to project. Further, a string passing hole may be provided in each string attachment portion piece of the pressure receiving body and the explosive body receiving seat.

[0008]

According to the cracker having the above-mentioned structure, as a method of attaching the string member to the pressure receiving body and the explosive body receiving seat, the string member is attached to the string attaching portion provided on the rear side of the pressure receiving body and the front side of the explosive body receiving seat, respectively. Since the one end portion and the other end portion of are fastened, the pressure receiving body and the explosive body receiving seat can be easily connected by the string member. Further, the pressure receiving body and the explosive body receiving member may be formed by a cord member without providing the pressure receiving member and the explosive body receiving member with a string passage hole penetrating in the front-back direction as shown in FIG. It became possible to connect. Therefore, the blast pressure of the explosive body does not leak from the pressure receiving body and the explosive body receiving seat, and the pressure receiving efficiency of the pressure receiving body is improved.

The string attachment piece of the pressure receiving body is provided so as to project rearward from the rear end portion of the pressure receiving body, and the string attachment portion piece of the explosive body receiving seat is provided so as to project forward from the frontmost end portion of the explosive body receiving seat. If so, the string members can be more easily fixed to the respective string attachment pieces. If each cord attachment portion of the pressure receiving body and the explosive body seat is provided with a cord insertion hole, it can be easily tied to each cord attachment portion through the end of the cord member.

When the pulling string is pulled to explode the explosive body,
The pressure receiving body receives the explosive energy of the explosive body and shoots it in the direction of the discharge port to collide with the object to be emitted, and the collision action causes the object to be emitted to fly into the air. At that time, the pressure receiving body moves to the discharge port or jumps out from the discharge port, but since the movement or the jumping distance is regulated by the cord member, there is no danger of the pressure receiving body jumping out, and it is safe.

[0011]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT A preferred embodiment of the present invention will be described with reference to the drawings. FIG. 1 is a sectional view showing a cracker according to an embodiment of the present invention in a state before being fired, FIG. 2 is a sectional view of the cracker after being fired, and FIG. 3 is a state in which a pressure receiver and an explosive body seat are connected by a string member. FIG. 4 is a cross-sectional view of the pressure receiving body and the explosive body receiving seat immediately before assembly.

As shown in FIG. 1, the cracker according to the present invention has a cylindrical or polygonal tubular body 1 made of plastic, cardboard or the like, and a discharge port 2 formed at the front end.
An explosive body formed in a bowl shape, a funnel shape or the like with plastic, cardboard or the like so as to receive and support one or more explosive bodies 3 called a pulling ball inside the tubular body 1. The seat 4 is accommodated and deployed. At the bottom of the explosive body seat 4, a drawstring passage hole 6 for allowing the drawstring 5 passed through the explosive body 3 to pass is formed.

In front of the explosive body 3 in the tubular body 1, a pressure receiving body 8 is provided.
To accommodate and deploy. The pressure receiving body 8 is formed of plastic, cardboard, or the like, and has a rearwardly open cylindrical or polygonal bottomed tubular shape having a flat plate-shaped head portion 8a and a skirt portion 8b continuously connected rearward from the entire circumference of the head portion 8a. Has been done.

A discharge object 9 such as confetti or a small tape is housed between the pressure receiving member 8 and the discharge port 2 in the cylindrical body 1. The discharge port 2 of the tubular body 1 has a lid piece 1 at the front end of the tubular body 1.
0s are integrally connected in a bendable manner and are folded inward of the discharge port 2 so that the discharge port 2 is closed.

Before the pressure receiving body 8 and the explosive body receiving seat 4 are housed inside the tubular body 1, as shown in FIG.
Are connected by. For this purpose, the pressure receiving body 8 and the explosive body receiving seat 4 are provided with string attachment pieces 12 and 13, respectively. The string attachment portion piece 12 of the pressure receiving body 8 is provided on the rear side of the pressure receiving body 8, and the string attachment portion piece 13 of the explosive body receiving seat 4 is provided on the front side of the explosive body receiving seat 4. Preferably, in order to make it easy to fasten the one end portion 11a of the string member 11 to the rear side of the pressure receiving body 8, the string attaching portion 12 of the pressure receiving body 8 is provided on the head portion 8a of the pressure receiving body 8 as shown in the illustrated example. The string attachment piece 1 is provided so as to project further from the center of the inner surface toward the rear end of the skirt 8b.
A string passing hole 14 is provided at a protruding end portion protruding rearward from the second skirt portion 8b.

On the other hand, in order to make it easy to fasten the other end 11b of the string member 11 to the front side of the explosive body seat 4, the string attachment portion 13 of the explosive body seat 4 is the explosive body as shown in the illustrated example. Seat 4
A string through hole 15 is provided on the projecting end of the string attachment portion 13 projecting forward from the foremost end of the explosive body seat 4 so as to project further forward from the innermost surface of the explosive body seat 4. It is provided.

The pressure-receiving body 8 and the explosive body seat 4 formed in this manner are inserted into the cord insertion holes 14 and 15 of the cord attachment pieces 12 and 13, respectively, and the one end 11a and the other end 11 of the cord member 11 are connected to each other.
It can be easily connected by tying through b.

Thus, as shown in FIG. 4, the pressure receiving body 8 and the explosive body receiving seat 4 connected by the string member 11 are abutted against each other and the string member 11 is rolled up between them to form a cylindrical body. 1 is easily incorporated into the inside of the tubular body 1 by inserting it from the discharge port 2 or the rear end. As described above, by assembling the pressure receiving body 8 and the explosive body receiving seat 4 into the cylindrical body 1 at the same time, the pressure receiving body 8 and the explosive body receiving seat 4 can be assembled more efficiently than the work of individually assembling into the cylindrical body 1. It is possible and is excellent in assembling.

The explosive body seat 4 has its outer diameter set slightly larger than the inner diameter of the cylindrical body 1 so that the explosive body seat 4 will not be pulled forward by the string member 11 when it is fired and will not move forward. The outer periphery of the front end portion of the seat 4 is housed in a state of press-fittingly engaging with the inner surface of the tubular body 1. Further, the explosive body seat 4 is held by a seat fixing cylinder 7 which is fitted and fixed to the inner rear end of the tubular body 1 so as not to slip out behind the tubular body 1.

The pressure receiving body 8 is formed such that the outer peripheral portion of the rear end portion thereof has a diameter slightly larger than the inner diameter of the tubular body 1 and is housed so as to be pressed into engagement with the inner surface of the tubular body 1, or It is formed to have the same diameter as or slightly smaller than the inner diameter of the body 1 and accommodated in a non-contact state.

After the pressure receiving body 8 and the explosive body receiving seat 4 are assembled, the substance 9 to be discharged is accommodated from the discharge port 2 of the cylindrical body 1 to the front side of the pressure receiving body 8. After accommodating the substance 9 to be discharged, the discharge port 2 is closed by the lid piece 10.

In the cracker of the above construction, when the drawstring 5 drawn out from the drawstring through hole 6 is pulled backward to explode the explosive body 3, the pressure receiving body 8 receives the explosive energy of the explosive body 3 and the discharge port 2 It is fired in a direction and collides with the object 9 to be emitted, and by this collision action, the object 9 to be emitted pushes the lid piece 10 open and is ejected from the emission port 2 into the air. When the pressure receiving body 8 is at the start position before firing, the cord member 11 is loosened and has a predetermined expansion margin as shown in FIG. 1, and as shown in FIG. 2, the pressure receiving body 8 moves to the discharge port 2 at the time of firing. When this is done, the cord member 11 loses its slack and extends completely, so that the pressure receiving body 8 stops within the discharge port 2 without jumping out from the discharge port 2.

At this time, one end 11a of the cord member 11 is attached to the cord attaching portion piece 12 on the rear side of the pressure receiving body 8, and the other end 11b of the cord member 11 is attached to the cord attaching portion piece 13 on the front side of the explosive body receiving seat 4. The pressure receiving body 8 and the explosive body seat 4 connected by the string member 11 in this manner do not leak the blast pressure of the explosive body 3 from the string member fastening portion, and the pressure receiving body 8
Is efficiently received by the blast pressure and is blown off vigorously.

The length of the cord member 11 is as shown in FIG.
When the pressure-receiving body 8 moves to the discharge port 2 at the time of firing, the string member 11 loses its slack and extends, so that the pressure-receiving body 8 does not jump out of the discharge port 2 and stops within the discharge port 2. Not only is there no danger of the pressure receiving body 8 popping out, but the smoke and odor generated by the explosion of the explosive body 3 are confined in the space between the pressure receiving body 8 and the explosive body seat 4 in the tubular body 1. In addition, the sound caused by the explosion is also silenced in the tubular body 1. Therefore, the cracker can be enjoyed even in a place where loud noise is disliked such as in a theater, a hall, a home, or a place where smoke or smell generated by the explosion of the explosive body is disliked.
However, the present invention is not limited to this, and the length of the string member 11 may be set such that the pressure receiving body 8 jumps into the air from the discharge port 2 by a certain distance by being fired. Good.

A string attachment piece 12 provided on the rear side of the pressure receiving body 8.
3 may be provided so as to project rearward from the rearmost end surface of the pressure receiving body 8 as shown by a chain double-dashed line in FIG. 3, and the string attaching portion 13 provided on the front side of the explosive body receiving seat 4 is the same. As shown by a two-dot chain line in the figure, the explosive body seat 4 may be provided so as to project forward from the front end face.

As shown in the figure, the pressure receiving body 8 is formed in a cylindrical shape having a flat head portion 8a and a skirt portion 8b, which is open rearward or in the shape of a polygonal bottomed cylinder, so that the pressure receiving area of the blast pressure is large. Although it can be widely used, it is not limited to this, and the pressure receiving body 8 may be formed into a solid columnar shape or a prismatic shape with foamed plastic as shown in FIG. The string attachment portion 12 having the hole 14 is provided so as to project rearward from the rear end surface of the pressure receiving body 8.

[0027]

As described above, according to the present invention,
The pressure receiving body and the explosive body receiving seat can be suitably and easily connected with a string member so as not to cause blast pressure leakage.

[Brief description of drawings]

FIG. 1 is a sectional view showing a cracker according to an embodiment of the present invention in a state before being fired.

FIG. 2 is a cross-sectional view of the cracker after it has been fired.

FIG. 3 is a perspective view showing a state in which a pressure receiver and an explosive body seat are connected by a string member.

FIG. 4 is a sectional view of a pressure receiving body and an explosive body receiving seat immediately before assembly.

FIG. 5 is a perspective view of a pressure receiving body showing another embodiment.

FIG. 6 is a cross-sectional view showing a conventional cracker before firing.

FIG. 7 is a cross-sectional view showing the cracker of FIG. 6 after being fired.

[Explanation of symbols]

1 tubular body 2 outlet 3 explosive body 4 Explosive body seat 5 drawstring 8 Pressure receiver 9 Emissions 11 String member 12, 13 String attachment piece 14,15 String through holes

Claims (3)

[Claims] 1. Inside a tubular body having a discharge port at the front end,
From the rear to the front, the explosive body seat, the explosive body that explodes by pulling the drawstring, the pressure receiving body that receives the explosive energy of this explosive body and is launched in the direction of the discharge port, the collision of this pressure receiving body In a cracker that accommodates and deploys an object to be discharged that is blown toward the discharge port, and connects one end of the string member to the rear side of the pressure receiver in a cracker that connects the pressure receiver and the explosive body seat with a string member. The cracker, wherein the string attachment part to which the part is fastened is provided on the front side of the explosive body seat, respectively, to which the other end of the string member is fastened. 2. A cord mounting portion piece of the pressure receiving body projects rearward from a rear end portion of the pressure receiving body, and a cord mounting portion piece of the explosive body seat is forward from a frontmost end portion of the explosive body seat. The cracker according to claim 1, wherein the cracker protrudes. 3. The cracker according to claim 1, wherein each of the cord mounting portion pieces of the pressure receiving body and the explosive body seat is provided with a string passing hole.