JPH0725626B2 - Fireworks for fireworks - Google Patents

Description

Description: TECHNICAL FIELD The present invention relates to a squib of a fireworks ball for landing fireworks, and in particular, an outer cylinder is formed so as to open from a distal end side toward a proximal end side and at the proximal end portion. It is characterized in that a flange is attached.

(Prior art) Fireworks are made by stacking sturdy paper such as Japanese paper or kraft paper into a spherical ball and filling it with a split medicine, stars, etc. It is to be landed on a ship and explode to appreciate the sound and light emitted at that time.

This fireworks ball is one in which the gas is rapidly generated by burning the explosive powder in the launch tube, and it is launched by using the pressure of the gas, and the squib is ignited by the fire at that time, and the fireworks ball is When a predetermined height above the sky is reached, the split medicine is ignited to explode it. Therefore, in order for the squib to exert its function, it must be surely ignited by the combustion of the expelled powder, the flame must reach the tip after a certain period of time, and the fire must be ignited by the split charge. However, there is a possibility that the conventional fireworks may explode immediately after igniting the explosive powder (early fire, tubular spring) or may fall (non-fire) without exploding.

This is because the squib 11 is formed in a tubular shape as shown in FIG. That is, the squib 11 is a powdered powder 13 of paper,
It is formed by covering it with other materials to form a tubular body 12 and further reinforcing it by winding a thread on the surface thereof.After inserting it into a mounting hole predrilled in the bead 14, the ball is made with an adhesive 15. leather
It is fixed to 14, but when launching a fireworks ball, a strong pressure from the explosive powder also acts on the squib 11, so the force causes the squib to rush into the fireworks ball. Explosion in the launch tube) and early firing (explosion before reaching a predetermined height) occur.

Therefore, in order to avoid such a danger, conventionally, a measure has been taken to reduce the pressure applied to the fire wire 11 by launching it into a thin shape, thereby reducing the possibility that it will rush into the fireworks ball. It was However, the conventional squib has a base protruding from the bead 14 as shown in FIG. 3, and is likely to be loosened by external force applied during handling, which may cause premature firing or a tubular spring. It couldn't be completely resolved. Moreover, by making it thin, the possibility of causing ignition mistakes and burnout of the squib 11 increases, and
The possibility of misfire from the charge mixture 13 to the split charge 17 also increased, and there was a fear of misfire. Therefore, it is currently instructed to attach the transfer charge 16 to the tip of the squib 11 in order to improve the ignitability of the split charge 17. However, the production of small fireworks was extremely large, and this work was troublesome, and the transfer charge 16 was sometimes detached from the squib 11.

(Object of the Invention) An object of the present invention is to develop a safe firework that surely explodes when reaching a predetermined height above the sky.

(Summary of the Invention) The present invention has been made in view of the above points, and when a fireworks is launched by forming a flange at the proximal end of the outer tube of the squib, the squib rushes into the fireworks ball. It eliminates the fear, which makes it possible to form the outer cylinder thicker, and further forms the outer cylinder in a tendency to open from the distal end side toward the proximal end side,
It eliminates the risk of accidental fire as well as early spring and cylinder spring.

(Example) FIG. 1 shows a cross section of a fireworks ball. In the figure, reference numeral 1 is a bezel and 2 is a squib. The ball skin 1 is similar to this type of normal one, and is made by stacking sturdy paper such as Japanese paper and kraft paper in multiple layers and filled with split medicine 7, stars 8 and others. When the pill medicine 7 is ignited, it explodes to disperse the stars 8 and at the same time ignite it to emit light.

The squib 2 is similar to the conventional one described above, which conveys the fire of the explosive charge when the fireworks ball is struck to the splitting agent 7 and ignites it, and is composed of the outer cylinder 3 and the squib 4. It is attached by inserting it into an attachment hole that is predrilled in the skin 1. The outer tube 3 of the squib 2 is formed so as to open from the tip end side toward the base end side, and a flange 5 is formed at the base end portion. This flange 5 is a squib 2
When it is inserted into the attachment hole of the jade 1 and engages the attachment hole to securely fix the fire wire 2 to the jade 1, the fire wire 2 may rush into the fireworks ball when launching the fireworks ball. This makes it possible to form the base end portion of the outer cylinder 3 thick, thereby eliminating the possibility of causing an ignition mistake or fire break of the explosive charge 4, and at the same time the risk of premature start or a cylinder spring. Is to eliminate. By forming the outer cylinder 3 so as to open from the distal end side toward the proximal end side, the lower end surface of the explosive charge 4 is widened so that ignition mistakes are eliminated and this is caused by the force applied to the explosive charge during launch. This eliminates the risk of the ball coming out of the outer tube 3 and plunging into the fireworks ball. Further, in this case, the powder charge 4 can be replaced by the conventional powdered powder, and a so-called mud powder can be press-fitted and loaded.

The manufacturing method and material of the outer cylinder 3 are not particularly limited.
Injection molding is preferably performed using a synthetic resin having appropriate strength and heat resistance, but considering pollution, it is desirable to use a material such as carbon that does not harm other crops. Of.

(Effects of the Invention) As described in detail above, the present invention forms a flange at the base end of the squib and the outer cylinder, and is formed so as to open toward the base end from the tip side thereof. Is securely fixed to the jade and there is no risk of rushing into the fireworks ball, thus eliminating the risk of premature fire or tube springs. In addition, since the outer cylinder can be formed thicker than the conventional one, the ignition mistake of the detonating charge can be eliminated, the fire can be prevented from running out, and the transfer charge 6 can be reliably ignited to eliminate the non-fire phenomenon. In particular, since the outer cylinder is formed so as to open from the distal end side toward the proximal end side, the detonating charge 4 can be loaded by press-fitting the mud explosive instead of the conventional powder explosive. Is extremely simple, and at that time, part of the mud powder projects from the tip of the outer cylinder 3 and functions as the transfer charge 6, so there is no need to attach the transfer charge 6 to the end of the squib 2, and this drops off. The fear of being eliminated is also eliminated. Since the tip of the outer tube 3 is made thinner than the base end, even if pressure is applied to the detonating powder, there is no risk that it will come out of the outer tube and enter the fireworks ball, and there is a risk of premature firing and a tube spring. This is eliminated.

Also, when making fireworks balls, make the ball skin thin in advance and attach the squib to it. After filling an overdose or a star, etc., while further adhering Japanese paper etc. on the surface, rolling it while applying an appropriate pressing force on the platform to make the paper adhering dense and smooth the surface, By attaching a flange to the base end edge of the outer cylinder, it is not necessary to project the base end of the outer cylinder from the bead, so this work is easily performed. As a result, the possibility that the fuse will rush into the fireworks ball is eliminated.

[Brief description of drawings]

FIG. 1 is a sectional view showing an embodiment of the present invention, FIG. 2 is a sectional view showing another example of a squib, and FIG. 3 is a sectional view showing a conventional fireworks ball. 1; Envelope, 2; Fire wire 3; Outer cylinder, 4; Fire powder 5; Flange, 6; Transfer powder 7; Discharge powder, 8; Star

Claims (1)

[Claims] 1. A squib which is composed of an outer cylinder and a squib
The outer cylinder is formed so as to open from the tip side toward the base side,
Moreover, a squib for fireworks, characterized in that a flange is formed at the base end thereof.