US20140345487A1 - Fireworks bomb structure and manufacturing method thereof - Google Patents

Fireworks bomb structure and manufacturing method thereof Download PDF

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Publication number
US20140345487A1
US20140345487A1 US13/898,643 US201313898643A US2014345487A1 US 20140345487 A1 US20140345487 A1 US 20140345487A1 US 201313898643 A US201313898643 A US 201313898643A US 2014345487 A1 US2014345487 A1 US 2014345487A1
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base
hole
powder
fuse
periphery
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US13/898,643
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Szu-Hua Wu
Mao-Jung Wu
Hui-Ju Wu
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Individual
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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F42—AMMUNITION; BLASTING
    • F42B—EXPLOSIVE CHARGES, e.g. FOR BLASTING, FIREWORKS, AMMUNITION
    • F42B4/00—Fireworks, i.e. pyrotechnic devices for amusement, display, illumination or signal purposes
    • F42B4/02—Fireworks, i.e. pyrotechnic devices for amusement, display, illumination or signal purposes in cartridge form, i.e. shell, propellant and primer
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F42—AMMUNITION; BLASTING
    • F42B—EXPLOSIVE CHARGES, e.g. FOR BLASTING, FIREWORKS, AMMUNITION
    • F42B30/00—Projectiles or missiles, not otherwise provided for, characterised by the ammunition class or type, e.g. by the launching apparatus or weapon used
    • F42B30/08—Ordnance projectiles or missiles, e.g. shells
    • F42B30/10—Mortar projectiles
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F42—AMMUNITION; BLASTING
    • F42B—EXPLOSIVE CHARGES, e.g. FOR BLASTING, FIREWORKS, AMMUNITION
    • F42B4/00—Fireworks, i.e. pyrotechnic devices for amusement, display, illumination or signal purposes
    • F42B4/30—Manufacture

Definitions

  • the invention relates to a fireworks bomb structure and manufacturing method thereof, particularly to a modular fireworks bomb structure.
  • FIG. 1 is a schematic view of a conventional fireworks bomb structure.
  • the fireworks bomb structure 10 comprises a sphere 11 with effect fire powder therein, a first fuse and second fuse 12 A, 12 B respectively protruded on two sides of the sphere 11 for both ends thereof respectively located at inside and outside of the sphere 11 , a canister launcher 13 having launch powder 14 at a bottom layer thereof for leading the first fuse 12 A into the launch powder 14 and a fuse hole 131 , a third fuse 15 extended through the fuse hole 131 to the launch powder 14 and a fourth fuse 16 having an end connected to the second fuse 12 B and another end leading into the launch powder 14 .
  • the aforesaid features are disclosed in CN Patent No. 201110741Y belongs to YONGFENG Firework MAG CO LTD.
  • FIG. 2 is an application example of the fireworks bomb structure 10 .
  • the launch powder 14 undergoes chemical changes to produce an upward physical force for the fireworks bomb structure 10 and then the first fuse 12 A and fourth fuse 16 are ignited.
  • the fireworks bomb structure 10 is launched into the air, the first fuse 12 A continues to burn; meanwhile, the second fuse 12 B begins to burn for detonating the sphere 11 .
  • the effect fire powder in the sphere 11 shows the fireworks effect, but the fireworks bomb structure 10 has the following disadvantages:
  • the preset length and burning time of the first and second fuses 12 A, 12 B are difficult to mutually cooperate so the predetermined detonation time of the sphere 11 is hard to control.
  • the first and second fuses 12 A, 12 B are respectively assembled and the effect fire powder of the canister launcher 13 and the launch powder 14 are not in the same structure so the manufacturing method of the fireworks bomb structure is complicated.
  • the upward physical force of the sphere 11 reduces the resistance of the fluid, but that the gravity center is located in the center of the sphere is easy to produce the rotational force. As a result, when the flow speed of the fluid speeds up, the transmit path of the sphere is easily deflected.
  • the present invention is provided to solve the above problems.
  • the present invention includes a lower shell being a semicircular body with an upward opening and having an annular concave portion at an upper periphery thereof, an lower annular groove at an external periphery thereof and a long hollow tube at a bottom thereof; a long internal fuse having powder at both ends thereof and inserted into the long hollow tube for a top end thereof and a bottom end thereof respectively projecting at an upper end and a lower end of the long hollow tube; a base being a hollow circular body, an upper periphery thereof corresponding to the lower annular groove having an annular flange expanded from the inside out for engaging the base with the lower shell and the base having a first fuse hole at a bottom periphery thereof; an upper shell being a semicircular body with a downward opening, a lower periphery thereof corresponding to the annular concave portion having an annular flange portion for engaging the upper shell with the lower shell to form a ball-shaped casing and the upper shell having a filing hole thereon;
  • the cover a rounded body has a handle portion at an upper surface thereof; a lower surface thereof corresponding to the filling hole has a sealing portion and an upper annular groove is arranged between an external periphery of the filling hole and an external periphery of the upper shell for inserting the cover.
  • the handle portion of the cover may have a second fuse hole.
  • the present invention may further comprise a canister launcher being a hollow cylinder body for placing the fireworks bomb structure.
  • a manufacturing method of the fireworks bomb structure comprises the steps of:
  • an upper shell being a semicircular body with a downward opening and having filing hole thereon and a lower periphery thereof corresponding to the annular concave portion having an annular flange portion for the upper shell engaging with the lower shell to form a ball-shaped casing;
  • the present invention provides a filling chamber interconnected with a propulsive chamber for respectively arranging effect fire powder and launch powder and an internal fuse with powder at both ends arranged between the filling chamber and propulsive chamber; thus, the detonated time can be predicted by the combustion spacing of the internal fuse.
  • both filling chamber and propulsive chamber are integrally molded and the fireworks bomb structure can be upside down to place the launch powder and effect fire powder by a first and second mold.
  • the propulsive chamber is able to strengthen the gravity center of the filling chamber. Therefore, the present invention provides timed detonation function and manufacturing convenient effect and reduces the transmit path deflection probability thereof.
  • FIG. 1 is a schematic view of a conventional fireworks bomb structure
  • FIG. 2 is a schematic view of a transmit path deflection of the conventional fireworks bomb structure
  • FIG. 3 is a perspective view of the present invention
  • FIG. 4 is an exploded sectional view of the present invention
  • FIG. 4A is a schematic view of the present invention, illustrating a first mold and a second mold to be combined;
  • FIG. 4B is a schematic view of the present invention, illustrating the combination of the first mold and second mold
  • FIG. 4C is a schematic view of the present invention, illustrating the filling of effect fire powder through a quantitative hole of a quantitative board
  • FIG. 4D is a schematic view of the present invention, illustrating a fixed board combined with the first mold
  • FIG. 4E is a schematic view of the present invention, illustrating the filling of launch powder through a quantitative hole of a quantitative board
  • FIG. 4F is a schematic view of the present invention, illustrating the removing of the second mold
  • FIG. 5 is a schematic view of the assembly of the present invention.
  • FIG. 6 is a cross-sectional view taken along the line 6 - 6 in FIG. 5 ;
  • FIG. 7 is an application example of the present invention combining with a canister launcher
  • FIG. 8 is a schematic view of the present invention, illustrating the launch powder being ignited by powder at a bottom end of an internal fuse
  • FIG. 9 is a schematic view of the present invention, illustrating effect fire powder being ignited by powder at a top end of the internal fuse.
  • the embodiment of a fireworks bomb structure in accordance with the present invention comprises a lower shell 21 being a semicircular body with an upward opening and having an annular concave portion 211 at an upper periphery thereof, an lower annular groove 212 at an external periphery thereof and a long hollow tube 213 at a bottom thereof; a long internal fuse 22 having powder 221 at both ends thereof and inserted into the long hollow tube 213 for a top end thereof and a bottom end thereof respectively projecting at an upper end and a lower end of the long hollow tube 213 ; a base 23 being a hollow circular body, an upper periphery thereof corresponding to the lower annular groove 212 having an annular flange 231 expanded from the inside out for engaging the base 23 with the lower shell 21 and the base 23 having a first fuse hole 232 at a bottom periphery thereof; an upper shell 24 being a semicircular body with a downward opening, a lower periphery thereof corresponding to the annul
  • the cover 26 a rounded body has a handle portion 261 at an upper surface thereof; a lower surface thereof corresponding to the filling hole 242 has a sealing portion 262 and an upper annular groove 243 is arranged between an external periphery of the filling hole 242 and an external periphery of the upper shell 24 for inserting the cover 26 .
  • the handle portion 261 of the cover 26 has a second fuse hole 263 .
  • a manufacturing method of the fireworks bomb structure comprising the steps of:
  • an upper shell 24 being a semicircular body with a downward opening and having filing hole 242 thereon and a lower periphery thereof corresponding to the annular concave portion 211 having an annular flange portion 241 for the upper shell 24 engaging with the lower shell 21 to form a ball-shaped casing 25 ;
  • Step e) is shown in FIGS. 4A to 4C , providing a first mold 30 with a plurality of first through holes 31 and a second mold 40 with a plurality of second through holes 41 respectively arranged at a bottom of the base 23 and a top of the ball-shaped casing 25 , respectively aligning centerlines of the first through hole 31 and the second through hole 41 with centerlines of the base 23 and the ball-shaped casing 25 to combine the first mold 30 with the second mold 40 for fixing the base 23 and the ball-shaped casing 25 respectively in the first through hole 31 and second through hole 41 , utilizing a quantitative hole 51 of a quantitative board 50 aligning with the filling hole 242 to fill effect fire powder 60 into the ball-shaped casing 25 and then coating toluene on a gap between the cover 26 and the filling hole 242 to seal the filling hole 242 and thus the upper shell 24 , the lower shell 21 and the cover 26 combines together to form a filing chamber 27 A for accommodating the effect fire powder 60 ;
  • Step f) is shown in FIGS. 4D to 4F , f) providing a fixed board 70 matched with the rounded cover 26 and combining with the first mold 30 to fix the base 23 and the ball-shaped casing 25 , inverting the first mold 30 and second mold 40 for the opening of the base 23 being upward, loading launch powder 80 in the base 23 through the quantitative hole 51 of the quantitative board 50 , removing the second mold 40 and the fixed board 70 and then fixing the external fuse 28 into the first fuse hole 232 for an end thereof being in the base 23 and another end thereof being outside the base 23 ; and
  • the fireworks bomb structure 20 accomplished by the steps a) to f) of a manufacturing method provides the filling chamber 27 A and propulsion chamber 27 B combined together to form a integrally molding and the internal fuse 22 with powder 221 at both ends respectively contacted with the effect fire powder 60 and launch powder 80 . Moreover, the propulsive chamber 27 B strengthens the gravity center of the tilling chamber 27 A.
  • the fireworks bomb structure 20 may be made of plastic materials but it is not a limitation.
  • the present invention further comprises a canister launcher 90 being a hollow cylinder body for placing the fireworks bomb structure 20 .
  • a canister launcher 90 being a hollow cylinder body for placing the fireworks bomb structure 20 .
  • the present invention is to predict the time point of the detonation of the effect fire powder 60 through the length of the internal fuse 22 and to strengthen the gravity center thereof for not having transmit path deflection caused by the rotation; in other words, the present invention can control the timing for detonating the effect fire powder 60 to the predetermined range.
  • the design of the fireworks bomb structure provides convenient manufacturing method and increases safety.

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Filling Or Discharging Of Gas Storage Vessels (AREA)

Abstract

The invention relates to a fireworks bomb structure and manufacturing method thereof comprising a cover combining with an upper shell and an lower shell to form a filing chamber for accommodating effect fire powder, a sealing body combining with a base and the lower shell to form a propulsive chamber for accommodating launch powder which is interconnected to the filing chamber, and a long internal fuse with powder at both ends respectively extending to the filing chamber and propulsive chamber; thus the present invention provides a modular combination for easily filling the launch powder and effect fire powder respectively into the chambers by reversing a mold, achieving effects of timed detonation, manufacturing convenient and target accuracy.

Description

    BACKGROUND OF THE INVENTION
  • 1. Field of the Invention
  • The invention relates to a fireworks bomb structure and manufacturing method thereof, particularly to a modular fireworks bomb structure.
  • 2. Description of the Related Art
  • FIG. 1 is a schematic view of a conventional fireworks bomb structure. The fireworks bomb structure 10 comprises a sphere 11 with effect fire powder therein, a first fuse and second fuse 12A, 12B respectively protruded on two sides of the sphere 11 for both ends thereof respectively located at inside and outside of the sphere 11, a canister launcher 13 having launch powder 14 at a bottom layer thereof for leading the first fuse 12A into the launch powder 14 and a fuse hole 131, a third fuse 15 extended through the fuse hole 131 to the launch powder 14 and a fourth fuse 16 having an end connected to the second fuse 12B and another end leading into the launch powder 14. The aforesaid features are disclosed in CN Patent No. 201110741Y belongs to YONGFENG Firework MAG CO LTD.
  • FIG. 2 is an application example of the fireworks bomb structure 10. After igniting the first fuse 15, the launch powder 14 undergoes chemical changes to produce an upward physical force for the fireworks bomb structure 10 and then the first fuse 12A and fourth fuse 16 are ignited. While the fireworks bomb structure 10 is launched into the air, the first fuse 12A continues to burn; meanwhile, the second fuse 12B begins to burn for detonating the sphere 11. Thus, the effect fire powder in the sphere 11 shows the fireworks effect, but the fireworks bomb structure 10 has the following disadvantages:
  • 1. The preset length and burning time of the first and second fuses 12A, 12B are difficult to mutually cooperate so the predetermined detonation time of the sphere 11 is hard to control.
  • 2. The first and second fuses 12A, 12B are respectively assembled and the effect fire powder of the canister launcher 13 and the launch powder 14 are not in the same structure so the manufacturing method of the fireworks bomb structure is complicated.
  • 3. The upward physical force of the sphere 11 reduces the resistance of the fluid, but that the gravity center is located in the center of the sphere is easy to produce the rotational force. As a result, when the flow speed of the fluid speeds up, the transmit path of the sphere is easily deflected.
  • Therefore, the present invention is provided to solve the above problems.
    • SUMMARY OF THE INVENTION
  • It is a primary object of the present invention to provide a fireworks bomb structure and manufacturing method thereof having launch powder and effect fire powder arranged in different chambers which are interconnected for predicting the detonated time by the combustion spacing between the chambers and to easily fill the launch powder and effect fire powder respectively into the chambers by reversing the mold, achieving timed detonation and manufacturing convenient effects.
  • It is another object of the present invention to provide a fireworks bomb structure and manufacturing method thereof for strengthening the gravity center thereof, reducing the transmit path deflection probability thereof.
  • In order to achieve the above objects, the present invention includes a lower shell being a semicircular body with an upward opening and having an annular concave portion at an upper periphery thereof, an lower annular groove at an external periphery thereof and a long hollow tube at a bottom thereof; a long internal fuse having powder at both ends thereof and inserted into the long hollow tube for a top end thereof and a bottom end thereof respectively projecting at an upper end and a lower end of the long hollow tube; a base being a hollow circular body, an upper periphery thereof corresponding to the lower annular groove having an annular flange expanded from the inside out for engaging the base with the lower shell and the base having a first fuse hole at a bottom periphery thereof; an upper shell being a semicircular body with a downward opening, a lower periphery thereof corresponding to the annular concave portion having an annular flange portion for engaging the upper shell with the lower shell to form a ball-shaped casing and the upper shell having a filing hole thereon; a cover sealing the filing hole and combining with the upper shell and the lower shell to form a filing chamber for accommodating effect fire powder; an external fuse fixed into the first fuse hole for an end thereof being in the base and another end thereof being outside the base; and a sealing body sealing a bottom of the base and combining with the base and the lower shell to form a propulsive chamber for accommodating launch powder.
  • Based on the features disclosed, the cover a rounded body has a handle portion at an upper surface thereof; a lower surface thereof corresponding to the filling hole has a sealing portion and an upper annular groove is arranged between an external periphery of the filling hole and an external periphery of the upper shell for inserting the cover. Further, the handle portion of the cover may have a second fuse hole. The present invention may further comprise a canister launcher being a hollow cylinder body for placing the fireworks bomb structure.
  • A manufacturing method of the fireworks bomb structure comprises the steps of:
  • a) providing a lower shell being a semicircular body with an upward opening and having an annular concave portion at an upper periphery thereof, an lower annular groove at an external periphery thereof and a long hollow tube at a bottom thereof;
  • b) providing a long internal fuse inserted into the long hollow tube for a top end thereof and a bottom end thereof respectively projecting at an upper end and a lower end of the long hollow tube, mixing toluene solvent, rubber powder and silt to coat on a gap between the internal fuse and the hollow tube for fixing the internal fuse to the hollow tube and then coating powder at both ends of the internal fuse;
  • c) providing a hollow circular base having an annular flange expanded from the inside at an upper periphery thereof and a first fuse hole at a bottom periphery thereof and then mixing toluene, banana oil and lacquer thinner to coat on a gap between the annular flange and the lower annular groove for combining the annular flange and the lower annular groove and further for engaging the base with the lower shell;
  • d) providing an upper shell being a semicircular body with a downward opening and having filing hole thereon and a lower periphery thereof corresponding to the annular concave portion having an annular flange portion for the upper shell engaging with the lower shell to form a ball-shaped casing;
  • e) providing a first mold with a plurality of first through holes and a second mold with a plurality of second through holes respectively arranged at a bottom of the base and a top of the ball-shaped casing, respectively aligning centerlines of the first through hole and the second through hole with centerlines of the base and the ball-shaped casing to combine the first mold with the second mold for fixing the base and the ball-shaped casing respectively in the first through hole and second through hole, utilizing a quantitative hole of a quantitative board aligning with the filling hole to fill effect fire powder into the ball-shaped casing and then coating toluene on a gap between the cover and the filling hole to seal the filling hole and thus the upper shell, the lower shell and the cover combines together to form a filing chamber for accommodating the effect fire powder;
  • f) providing a fixed board matched with the rounded cover and combining with the first mold to fix the base and the ball-shaped casing, inverting the first mold and second mold for the opening of the base being upward, loading launch powder in the base through the quantitative hole of the quantitative board, removing the second mold and the fixed board and then fixing the external fuse into the first fuse hole for an end thereof being in the base and another end thereof being outside the base; and
  • g) providing a sealing body sealing the opening of the base and combining the base and the lower shell to form a propulsive chamber for accommodating the launch powder.
  • Based on the technical features disclosed, the present invention provides a filling chamber interconnected with a propulsive chamber for respectively arranging effect fire powder and launch powder and an internal fuse with powder at both ends arranged between the filling chamber and propulsive chamber; thus, the detonated time can be predicted by the combustion spacing of the internal fuse. Moreover, both filling chamber and propulsive chamber are integrally molded and the fireworks bomb structure can be upside down to place the launch powder and effect fire powder by a first and second mold. Meanwhile, the propulsive chamber is able to strengthen the gravity center of the filling chamber. Therefore, the present invention provides timed detonation function and manufacturing convenient effect and reduces the transmit path deflection probability thereof.
    • BRIEF DESCRIPTION OF THE DRAWINGS
  • FIG. 1 is a schematic view of a conventional fireworks bomb structure;
  • FIG. 2 is a schematic view of a transmit path deflection of the conventional fireworks bomb structure;
  • FIG. 3 is a perspective view of the present invention;
  • FIG. 4 is an exploded sectional view of the present invention;
  • FIG. 4A is a schematic view of the present invention, illustrating a first mold and a second mold to be combined;
  • FIG. 4B is a schematic view of the present invention, illustrating the combination of the first mold and second mold;
  • FIG. 4C is a schematic view of the present invention, illustrating the filling of effect fire powder through a quantitative hole of a quantitative board;
  • FIG. 4D is a schematic view of the present invention, illustrating a fixed board combined with the first mold;
  • FIG. 4E is a schematic view of the present invention, illustrating the filling of launch powder through a quantitative hole of a quantitative board;
  • FIG. 4F is a schematic view of the present invention, illustrating the removing of the second mold;
  • FIG. 5 is a schematic view of the assembly of the present invention;
  • FIG. 6 is a cross-sectional view taken along the line 6-6 in FIG. 5;
  • FIG. 7 is an application example of the present invention combining with a canister launcher;
  • FIG. 8 is a schematic view of the present invention, illustrating the launch powder being ignited by powder at a bottom end of an internal fuse; and
  • FIG. 9 is a schematic view of the present invention, illustrating effect fire powder being ignited by powder at a top end of the internal fuse.
    •  DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT
  • With the referenced to FIGS. 3 through 9, the embodiment of a fireworks bomb structure in accordance with the present invention comprises a lower shell 21 being a semicircular body with an upward opening and having an annular concave portion 211 at an upper periphery thereof, an lower annular groove 212 at an external periphery thereof and a long hollow tube 213 at a bottom thereof; a long internal fuse 22 having powder 221 at both ends thereof and inserted into the long hollow tube 213 for a top end thereof and a bottom end thereof respectively projecting at an upper end and a lower end of the long hollow tube 213; a base 23 being a hollow circular body, an upper periphery thereof corresponding to the lower annular groove 212 having an annular flange 231 expanded from the inside out for engaging the base 23 with the lower shell 21 and the base 23 having a first fuse hole 232 at a bottom periphery thereof; an upper shell 24 being a semicircular body with a downward opening, a lower periphery thereof corresponding to the annular concave portion 211 having an annular flange portion 241 for engaging the upper shell 24 with the lower shell 21 to form a ball-shaped casing 25 and the upper shell 24 having a filing hole 242 thereon; a cover 26 sealing the filing hole 242 and combining with the upper shell 24 and the lower shell 21 to form a filing chamber 27A for accommodating effect fire powder 60; an external fuse 28 fixed into the first fuse hole 232 for an end thereof being in the base 23 and another end thereof being outside the base 23; and a sealing body 29 sealing a bottom of the base 23 and combining with, the base 23 and the lower shell 21 to form a propulsive chamber 27B for accommodating launch powder 80.
  • In the embodiment, the cover 26 a rounded body has a handle portion 261 at an upper surface thereof; a lower surface thereof corresponding to the filling hole 242 has a sealing portion 262 and an upper annular groove 243 is arranged between an external periphery of the filling hole 242 and an external periphery of the upper shell 24 for inserting the cover 26. Further, the handle portion 261 of the cover 26 has a second fuse hole 263.
  • Based on the features disclosed, a manufacturing method of the fireworks bomb structure comprising the steps of:
  • a) providing a lower shell 21 being a semicircular body with an upward opening and having an annular concave portion 211 at an upper periphery thereof, an lower annular groove 212 at an external periphery thereof and a long hollow tube 213 at a bottom thereof;
  • b) providing a long internal fuse 22 inserted into the long hollow tube 213 for a top end thereof and a bottom end thereof respectively projecting at an upper end and a lower end of the long hollow tube 213, mixing toluene solvent, rubber powder and silt to coat on a gap between the internal fuse 22 and the hollow tube 213 for fixing the internal fuse 22 to the hollow tube 213 and then coating powder 221 at both ends of the internal fuse 22;
  • c) providing a hollow circular base 23 having an annular flange 231 expanded from the inside at an upper periphery thereof and a first fuse hole 232 at a bottom periphery thereof and then mixing toluene, banana oil and lacquer thinner to coat on a gap between the annular flange 231 and the lower annular groove 212 for combining the annular flange 231 and the lower annular groove 212 and further for engaging the base 23 with the lower shell 21;
  • d) providing an upper shell 24 being a semicircular body with a downward opening and having filing hole 242 thereon and a lower periphery thereof corresponding to the annular concave portion 211 having an annular flange portion 241 for the upper shell 24 engaging with the lower shell 21 to form a ball-shaped casing 25;
  • Step e) is shown in FIGS. 4A to 4C, providing a first mold 30 with a plurality of first through holes 31 and a second mold 40 with a plurality of second through holes 41 respectively arranged at a bottom of the base 23 and a top of the ball-shaped casing 25, respectively aligning centerlines of the first through hole 31 and the second through hole 41 with centerlines of the base 23 and the ball-shaped casing 25 to combine the first mold 30 with the second mold 40 for fixing the base 23 and the ball-shaped casing 25 respectively in the first through hole 31 and second through hole 41, utilizing a quantitative hole 51 of a quantitative board 50 aligning with the filling hole 242 to fill effect fire powder 60 into the ball-shaped casing 25 and then coating toluene on a gap between the cover 26 and the filling hole 242 to seal the filling hole 242 and thus the upper shell 24, the lower shell 21 and the cover 26 combines together to form a filing chamber 27A for accommodating the effect fire powder 60;
  • Step f) is shown in FIGS. 4D to 4F, f) providing a fixed board 70 matched with the rounded cover 26 and combining with the first mold 30 to fix the base 23 and the ball-shaped casing 25, inverting the first mold 30 and second mold 40 for the opening of the base 23 being upward, loading launch powder 80 in the base 23 through the quantitative hole 51 of the quantitative board 50, removing the second mold 40 and the fixed board 70 and then fixing the external fuse 28 into the first fuse hole 232 for an end thereof being in the base 23 and another end thereof being outside the base 23; and
  • g) providing a sealing body 29 sealing the opening of the base 23 and combining the base 23 and the lower shell 21 to form a propulsive chamber 27B for accommodating the launch powder 80.
  • With the references to FIGS. 5 and 6, the fireworks bomb structure 20 accomplished by the steps a) to f) of a manufacturing method provides the filling chamber 27A and propulsion chamber 27B combined together to form a integrally molding and the internal fuse 22 with powder 221 at both ends respectively contacted with the effect fire powder 60 and launch powder 80. Moreover, the propulsive chamber 27B strengthens the gravity center of the tilling chamber 27A. In the embodiment, the fireworks bomb structure 20 may be made of plastic materials but it is not a limitation.
  • With the referenced to FIGS. 7 to 9, the present invention further comprises a canister launcher 90 being a hollow cylinder body for placing the fireworks bomb structure 20. When igniting the external fuse 28 extended through the second fuse hole 263 to a predetermined location which is outside of the canister launcher 90, the launch powder 80 in the propulsive chamber 27B is burned to ignite the powder 221 at the bottom end of the internal fuse 22 for the fireworks bomb structure 20 instantly injecting out of the canister launcher 90 and continually to burn the powder 221 at the top end of the internal fuse 22 in order to detonate the effect fire powder 60 to a predetermined range.
  • Therefore, the present invention is to predict the time point of the detonation of the effect fire powder 60 through the length of the internal fuse 22 and to strengthen the gravity center thereof for not having transmit path deflection caused by the rotation; in other words, the present invention can control the timing for detonating the effect fire powder 60 to the predetermined range. Moreover, the design of the fireworks bomb structure provides convenient manufacturing method and increases safety.
  • Although particular embodiments of the invention have been described in detail for purposes of illustration, various modifications and enhancements may be made without departing from the spirit and scope of the invention. Accordingly, the invention is not to be limited except as by the appended claims.

Claims (5)

What is claimed is:
1. A fireworks bomb structure, comprising:
a lower shell being a semicircular body with an upward opening and having an annular concave portion at an upper periphery thereof, an lower annular groove at an external periphery thereof and a long hollow tube at a bottom thereof;
a long internal fuse having powder at both ends thereof and inserted into the long hollow tube for a top end thereof and a bottom end thereof respectively projecting at an upper end and a lower end of the long hollow tube;
a base being a hollow circular body, an upper periphery thereof corresponding to the lower annular groove having an annular flange expanded from the inside out for engaging the base with the lower shell and the base having a first fuse hole at a bottom periphery thereof;
an upper shell being a semicircular body with a downward opening, a lower periphery thereof corresponding to the annular concave portion having an annular flange portion for engaging the upper shell with the lower shell to form a ball-shaped casing and the upper shell having a filing hole thereon;
a cover sealing the filing hole and combining with the upper shell and the lower shell to form a filing chamber for accommodating effect fire powder;
an external fuse fixed into the first fuse hole for an end thereof being in the base and another end thereof being outside the base; and
a sealing body sealing a bottom of the base and combining with the base and the lower shell to form a propulsive chamber for accommodating launch powder.
2. The fireworks bomb structure thereof as claimed in claim 1, wherein the cover a rounded body has a handle portion at an upper surface thereof; a lower surface thereof corresponding to the filling hole has a sealing portion and an upper annular groove is arranged between an external periphery of the filling hole and an external periphery of the upper shell for inserting the cover.
3. The fireworks bomb structure as claimed in claim 2, wherein the handle portion of the cover has a second fuse hole.
4. The fireworks bomb structure as claimed in claim 3, further comprising a canister launcher being a hollow cylinder body for placing the fireworks bomb structure.
5. A manufacturing method of the fireworks bomb structure as claimed in claim 1, comprising the steps of:
a) providing a lower shell being a semicircular body with an upward opening and having an annular concave portion at an upper periphery thereof, an lower annular groove at an external periphery thereof and a long hollow tube at a bottom thereof;
b) providing a long internal fuse inserted into the long hollow tube for a top end thereof and a bottom end thereof respectively projecting at an upper end and a lower end of the long hollow tube, mixing toluene solvent, rubber powder and silt to coat on a gap between the internal fuse and the hollow tube for fixing the internal fuse to the hollow tube and then coating powder at both ends of the internal fuse;
c) providing a hollow circular base having an annular flange expanded from the inside at an upper periphery thereof and a first fuse hole at a bottom periphery thereof and then mixing toluene, banana oil and lacquer thinner to coat on a gap between the annular flange and the lower annular groove for combining the annular flange and the lower annular groove and further for engaging the base with the lower shell;
d) providing an upper shell being a semicircular body with a downward opening and having filing hole thereon and a lower periphery thereof corresponding to the annular concave portion having an annular flange portion for the upper shell engaging with the lower shell to form a ball-shaped casing;
e) providing a first mold with a plurality of first through holes and a second mold with a plurality of second through holes respectively arranged at a bottom of the base and a top of the ball-shaped casing, respectively aligning centerlines of the first through hole and the second through hole with centerlines of the base and the ball-shaped casing to combine the first mold with the second mold for fixing the base and the ball-shaped casing respectively in the first through hole and second through hole, utilizing a quantitative hole of a quantitative board aligning with the filling hole to fill effect fire powder into the ball-shaped casing and then coating toluene on a gap between the cover and the filling hole to seal the filling hole and thus the upper shell, the lower shell and the cover combines together to form a filing chamber for accommodating the effect fire powder;
f) providing a fixed board matched with the rounded cover and combining with the first mold to fix the base and the ball-shaped casing, inverting the first mold and second mold for the opening of the base being upward, loading launch powder in the base through the quantitative hole of the quantitative board, removing the second mold and the fixed board and then fixing the external fuse into the first fuse hole for an end thereof being in the base and another end thereof being outside the base; and
g) providing a sealing body sealing the opening of the base and combining the base and the lower shell to form a propulsive chamber for accommodating the launch powder.
US13/898,643 2013-05-21 2013-05-21 Fireworks bomb structure and manufacturing method thereof Abandoned US20140345487A1 (en)

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US20150233686A1 (en) * 2012-03-27 2015-08-20 Dmd Systems Llc Spooling Pyrotechnic Device
DE102015010059A1 (en) * 2015-08-07 2017-02-09 Alexander Buchner Firecracker cradle with conducting bar, fireworks and electronics unit
US20170052006A1 (en) * 2015-08-20 2017-02-23 Robert Graf Pyrotechnic device for creating an overall effect consisting of individual effects
JP2017083024A (en) * 2015-10-22 2017-05-18 有限会社太田紙工 Flying parts of rocket firework and method for manufacturing shell thereof

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US6283033B1 (en) * 1999-07-30 2001-09-04 Jake's Fireworks Multiple effect pyrotechnic shell
US6490977B1 (en) * 1998-03-30 2002-12-10 Magicfire, Inc. Precision pyrotechnic display system and method having increased safety and timing accuracy
US6779459B2 (en) * 2002-07-02 2004-08-24 Hunter Pacific Limited Pyrotechnic projectile launcher
US7278355B2 (en) * 2003-07-10 2007-10-09 American Promotional Events, Inc. Enhanced efficiency pyrotechnic shell
US8079307B2 (en) * 2005-10-05 2011-12-20 Mckinley Paul Electric match assembly with isolated lift and burst function for a pyrotechnic device
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US6490977B1 (en) * 1998-03-30 2002-12-10 Magicfire, Inc. Precision pyrotechnic display system and method having increased safety and timing accuracy
US6283033B1 (en) * 1999-07-30 2001-09-04 Jake's Fireworks Multiple effect pyrotechnic shell
US6779459B2 (en) * 2002-07-02 2004-08-24 Hunter Pacific Limited Pyrotechnic projectile launcher
US7278355B2 (en) * 2003-07-10 2007-10-09 American Promotional Events, Inc. Enhanced efficiency pyrotechnic shell
US8079307B2 (en) * 2005-10-05 2011-12-20 Mckinley Paul Electric match assembly with isolated lift and burst function for a pyrotechnic device
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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20150233686A1 (en) * 2012-03-27 2015-08-20 Dmd Systems Llc Spooling Pyrotechnic Device
US9217624B2 (en) * 2012-03-27 2015-12-22 Dmd Systems Llc Spooling pyrotechnic device
DE102015010059A1 (en) * 2015-08-07 2017-02-09 Alexander Buchner Firecracker cradle with conducting bar, fireworks and electronics unit
US9879953B2 (en) 2015-08-07 2018-01-30 Alexander Buchner Firework accomodating apparatus comprising guide rod, firework and electronic unit
DE102015010059B4 (en) * 2015-08-07 2021-05-27 Alexander Buchner Fireworks cradle with guide rod, fireworks and electronics unit
US20170052006A1 (en) * 2015-08-20 2017-02-23 Robert Graf Pyrotechnic device for creating an overall effect consisting of individual effects
JP2017083024A (en) * 2015-10-22 2017-05-18 有限会社太田紙工 Flying parts of rocket firework and method for manufacturing shell thereof

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