JPH0356795Y2 - - Google Patents

Description

[Detailed description of the invention] (Field of industrial application) The present invention relates to fireworks that can be launched by hand or the like.

(Prior art) In general, for this type of fireworks, a paper tube is filled with gunpowder and an ignition wire is provided, and the paper tube is inserted into an outer tube portion also made of paper material, so that both They were manufactured by fixing them together with adhesives such as glue.

(Problem to be solved by the invention) However, in the case of fireworks with the above-mentioned conventional structure, the paper tube is fixed to the outer tube part with adhesive, which is a very time-consuming process. As a result, the processing cost inevitably increases, and when setting off fireworks, the ignited gunpowder sometimes escapes through the bottom of the paper tube and the bottom of the outer tube, causing damage to players. It could fly out to the side, making it a dangerous game.

Therefore, in view of the above-mentioned drawbacks of the conventional art, the present invention provides fireworks that are extremely simple to produce, improve workability, and minimize the dangers of playing with fireworks. The purpose is to

(Means for Solving the Problems) In order to achieve the above object, the present invention includes a paper tube filled with gunpowder and a bottomed tube made of synthetic resin and into which the paper tube is irremovably inserted. The main feature is that the container is composed of a width tube portion forming a storage portion, and a bottomed outer container made of synthetic resin and into which the width tube portion is irremovably fitted.

(Example) Hereinafter, an example of the present invention will be described in detail with reference to the drawings.

In the figure, 1 indicates the entire firework;
Roughly speaking, it is composed of a paper cylinder 2 filled with gunpowder, an intermediate width cylinder part 3 for storing the paper cylinder 2, and an outer container 4 for storing the same width cylinder part 3. In addition,
In this example, a firework 1 having two paper tubes 2 will be explained.

The two paper tubes 2 constitute a powder tube for fireworks, and are formed into a bottomed tube shape made of paper material, filled with gunpowder inside, and have an ignition wire 5 protruding from the top surface thereof. It is covered with a lid part 2a made of the same material.

The width tube portion 3 is made of synthetic resin, and is formed into a bottomed tube with an approximately oval-shaped planar cross section and an open top. Storage portions 3a, 3a are formed which are symmetrically partitioned in the upper part, and an annular recess 6 is integrally formed from the outside to the inner surface almost at the upper part, and the outer circumferential side thereof is the outer side which will be described later. It has a recess 6a for engaging with the container 4, and a locking protrusion 6b for locking the two paper cylinders 2 on the inner peripheral surface side. The width tube portion 3 is formed to be relatively thin, and the upper portions of the storage portions 3a, 3a are connected to the locking protrusions 6b.
It is configured to be elastically expandable. Thus, the paper tubes 2, 2 are fitted into the width tube portions 3a, 3a. The protrusion 6b that locks the upper end surface of the paper tubes 2, 2
It is fixed in place so that it cannot be removed.

The outer container 4 is made of synthetic resin like the width tube part 3, and has a storage part 4a that stores the width tube part 3 with an open top and a substantially oval shape in plan cross section, and a grip part 4b in the shape of a cylinder with a bottom. An annular locking protrusion 7 is integrally formed substantially at the top of the inner circumferential surface thereof. The outer container 4 is formed to have a relatively thin wall, and the upper part of the storage portion 4a including the locking protrusion 7 is configured to be elastically expandable. Thus, the width cylindrical portion 3 is fitted into the storage portion 4a of the outer container 4, and the engagement recess 6 of the same width cylindrical portion 3 is inserted.
By fitting the locking protrusion 7 to a, the width tube portion 3 is fixed irremovably.

The upper ends of the ignition wires 5 of the two paper tubes 2, 2 are connected to each other to form a single ignition wire, so that the gunpowder in the two paper tubes 2, 2 is ignited almost simultaneously. is configured to do so.

Since the fireworks 1 of this embodiment is configured as described above, when manufacturing the fireworks, first, the storage parts 3a, 3a and the locking protrusion 6b of the width tube part 3 are expanded slightly, and then the storage parts 3a, 3a and the locking protrusion 6b are The two paper cylinders 2, 2 are inserted into the sections 3a, 3a, and their expanding operation is released, and the upper end surfaces of the paper cylinders 2, 2 are elastically locked by the locking protrusion 6b. . As a result, the two paper tubes 2, 2 are fixed to the width tube portion 3 irremovably. Next, while slightly expanding the locking protrusion 7 in the engagement recess 6a of the width tube part 3 of the outer container 4, the width tube part 3 in which the two paper tubes 2, 2 are stored in the storage part 4a is opened. Then, by releasing the expanding operation, the locking protrusion 7 is elastically engaged and locked in the engagement recess 6a of the same-width cylindrical portion 3. Thereby, the width tube portion 3 housing the two paper tubes 2, 2 is fixed to the outer container 4 in a manner that cannot be removed.

In this way, since the fireworks 1 of this example can be manufactured easily, no bonding process using an adhesive or the like is required during the manufacturing process, so that the work process and the number of personnel can be omitted. Furthermore, the paper tube 2 filled with gunpowder is fixed to the width tube portion 3 and the outer container 4 is fixed.
Since the fixed state of the width tube portion 3 is achieved by the engaging protrusions 6b and 7 using elastic force, the fixed state is ensured without causing any "slippage".

Furthermore, in the case of the fireworks 1 of this example, the paper tube 2 filled with gunpowder is inserted into the bottomed width tube portion 3 made of synthetic resin.
Moreover, since the tube portion 3 of the same width is housed in the bottomed outer container 4 made of synthetic resin, when the gunpowder is used, the ignited gunpowder will not escape through the bottom of the paper tubes 2, 2. Fireworks will not fly out to the player's side, and the fireworks game can be enjoyed extremely safely. Although this embodiment has described a firework having a shape in which two paper tubes 2, 2 filled with gunpowder are arranged side by side, the number and shape are not limited to those shown in the drawings, and the width tube portion 3 Engagement protrusion 6 in
b. It goes without saying that the engaging protrusion 7 on the outer container 4 is not limited to an annular shape, and may be partially formed.

(Effects) As described above, the present invention is constructed of a paper cylinder filled with gunpowder, an intermediate width cylinder part that stores the paper cylinder 2, and an outer container that stores the same width cylinder part, thereby producing fireworks. It is possible to improve the work efficiency by making it extremely simple, and has the advantage that the danger of playing with fireworks can be reduced as much as possible.

[Brief explanation of the drawing]

The drawings show one embodiment of the present invention, in which FIG. 1 is a perspective view showing the entire firework, and FIG. 2 is a sectional view taken along the line A--A in FIG. 1. 1... Fireworks, 2... Paper tube, 3... Width tube part, 4...
...outer container.

Claims (1)

[Scope of utility model registration request] A paper cylinder filled with gunpowder, a width cylinder part made of synthetic resin and forming a bottomed storage part into which the paper cylinder is irremovably inserted, and a width cylinder part made of synthetic resin that allows the width cylinder part to be removed. A firework characterized by being comprised of a bottomed outer container that fits into the container.