A flower bomb

Abstract

The present application provides a kind of flower cannon, belongs to the technical field of saluting cannon supplies.It solves the problem that the existing flower cannon is too single in auditory and visual effects and has poor ornamental value.The present flower cannon includes an outer cylinder with several firing chambers, each firing chamber is provided with a firing hole at the bottom, the bottom of the outer cylinder is provided with a wiring slot, and the firing hole penetrates to the bottom wall of the wiring slot, a fuse is arranged in the wiring slot, the bottom of the outer cylinder is provided with several cutting slots, the wiring slot passes through the cutting slots, a fire passageway is arranged between each adjacent two cutting slots, the fire passageway is provided on the bottom wall of the wiring slot, each adjacent two cutting slots are provided with at least two firing holes corresponding to the firing chambers, and the firing holes of adjacent two firing chambers are connected by the fire passageway, the fuse can cover the fire passageway, and the wiring slot and the cutting slot are filled with glue to form a sealed glue layer.The present flower cannon can achieve the effect of precise control of multiple continuous firing, greatly improve the visual and auditory double impact effect, and has better ornamental value.

Description

Technical Field

[0001] This invention belongs to the technical field of ceremonial cannons and relates to a type of firework. Background Technology

[0002] Fireworks, also known as "fireworks," are products that use gunpowder to produce sound, light, and color effects through combustion or explosion. Fireworks are entertainment products for viewing and are widely used in grand ceremonies, performances, or festivals.

[0003] Most fireworks on the market consist of an inner tube and an outer tube. The outer tube has multiple launching chambers, the depth of which is greater than the height of the inner tube. Each launching chamber contains one of the aforementioned inner tubes. A pressurized air chamber is formed between the bottom of the inner tube and the bottom surface of the launching chamber. This pressurized air chamber is used to fill the gunpowder for launching the inner tubes. The outer tube is also equipped with a fuse for igniting the gunpowder in the pressurized air chamber. The inner tubes contain effect gunpowder. Through the ignition of the fuse, the inner tubes in each launching chamber are launched sequentially at intervals.

[0004] To facilitate the arrangement of the fuse, existing fireworks have a wiring groove at the bottom of the outer tube for embedding the fuse. The wiring groove is roughly serpentine in shape, and each firing chamber has an ignition hole at the bottom that communicates with the wiring groove. For example, Chinese patent application (application number: 201210447718.6) discloses a molded combination firework, which includes several tubular cavities evenly distributed in parallel on the main body. The upper end of the tubular cavity is open, and the lower end is closed. The tubular cavity contains pyrotechnic materials and effect components. The closed end of the tubular cavity has a ignition hole that penetrates the bottom surface of the main body. The bottom opening of the ignition hole is located in the wiring groove. In the wiring groove, there is a cutting groove between the bottom openings of the ignition hole. The wiring groove is sealed with glue, thereby forming a serpentine plate-shaped sealing glue layer extending along the ignition direction at the bottom of the main body.

[0005] When used, the fuse is lit, and the sparks burn sequentially in a serpentine pattern, igniting the gunpowder in the pressurized gas chambers of each launch chamber in turn. This causes the inner tubes of each launch chamber to explode in the air in a sequential, intermittent manner, producing sound, light, and color effects. Existing fireworks have the following drawbacks: they all launch one firework at a time in sequence, creating one explosion and one burst of sound, light, and color effect in the air, resulting in overly simplistic auditory and visual effects and poor overall entertainment value.

[0006] To enhance the auditory and visual effects of fireworks, common practices include: 1. Encapsulating various types of effect gunpowder in the inner tube to create different light and color effects in the air. 2. Stacking multiple inner tubes filled with different effect gunpowder within the same launch chamber. Summary of the Invention

[0007] The purpose of this invention is to address the aforementioned problems in existing technologies by proposing a new type of firework. The technical problem to be solved by this invention is how to address the issue that the auditory and visual effects of existing firework are too monotonous and lack aesthetic appeal.

[0008] The objective of this invention can be achieved through the following technical solution: A firework includes an outer cylinder having several firing chambers, each firing chamber containing gunpowder, and each firing chamber having an ignition hole at its bottom. The bottom of the outer cylinder has a wiring groove, the ignition hole extending through to the bottom wall of the wiring groove, and a lead wire inside the wiring groove. The bottom of the outer cylinder also has several cutting grooves, the wiring groove passing through the cutting grooves, and the width and depth of the cutting grooves being greater than the width and depth of the wiring grooves. The fire passage is located between each pair of adjacent cutting grooves and is located on the bottom wall of the wiring groove. At least two ignition holes corresponding to the firing chambers are located between each pair of adjacent cutting grooves, and the ignition holes of adjacent firing chambers are connected through the fire passage. The lead wire can cover the fire passage. Adhesive is filled into both the wiring groove and the cutting grooves to form a sealing layer that can fix the lead wire within the wiring groove.

[0009] In this firework, the gunpowder may include propellant and effect gunpowder filled in the inner tube. Each firing chamber of the outer tube may contain one or more inner tubes. A pressurized gas chamber is formed between the bottom end of the inner tube and the bottom surface of the firing chamber. This pressurized gas chamber is filled with propellant for launching the inner tube. An ignition hole at the bottom of the firing chamber is used to ignite the propellant. Each firing chamber may have one or two ignition holes at the bottom. The wiring groove can be serpentine or wavy, etc., depending on the actual needs. The lead wire is placed in the wiring groove, and sealing is achieved by filling the wiring groove and the cutting groove with glue, thereby forming a serpentine plate-like sealing glue layer at the bottom of the outer tube to fix the lead wire in the wiring groove, preventing the lead wire from falling off or getting damp.

[0010] In this fireworks structure, because the ignition channel is located on the bottom wall of the wiring groove and its width is smaller than the outer diameter of the fuse, after the fuse is embedded in the wiring groove, it can abut against the edge of the ignition channel, thus shielding it. Essentially, after the fuse is embedded, it also acts as a cover to shield the ignition channel, isolating it from the wiring groove. This prevents glue from flowing into the ignition channel and causing blockage during application. Furthermore, after ignition, the fuse ignites the propellant in the first launch chamber. The burning high-pressure propellant gas instantly rushes through the ignition channel into the next set of ignition holes, igniting the propellant in the next launch chamber, and so on. This continues until the burning high-pressure propellant gas reaches the cut-off groove, where it is blocked by the glue. This allows each launch chamber to launch its inner tube into the air and explode almost simultaneously, achieving a multi-shot effect and simultaneously creating multiple sound, light, and color effects in the air. After the high-pressure propellant gases reach the cut-off groove and are blocked by the glue, they cannot continue to flow downwards. Instead, they ignite the fuse, which then guides the flame to the next set of ignition holes, creating a time difference, and the cycle continues. In other words, through this design, this firework can achieve precise control of multiple shots in rapid succession. It not only provides the visual and auditory effects of multiple shots during launch but also creates multiple sound, light, and color effects in the air, greatly enhancing the dual impact of sight and sound and making it more visually appealing.

[0011] This firework design allows for double, triple, or quadruple bursts, with the specific number of bursts determined by the desired effect. The number of bursts in each burst can be equal or unequal, meaning a combination of double, triple, or quadruple bursts is also possible, depending on the desired effect.

[0012] In the aforementioned fireworks, the width of the fire passage is smaller than the outer diameter of the lead wire. The outer diameter of the lead wire is larger than the outer diameter of the fire passage. After the lead wire is installed, it can better and more completely cover the fire passage, and also acts as a cover to cover the fire passage. The lead wire can isolate the fire passage from the wiring groove, so that when filling and applying glue, the glue will not flow into the fire passage and cause blockage.

[0013] In the aforementioned fireworks, the fire passage is a strip-shaped hole or groove. The fire passage can be configured as a strip-shaped hole or groove. After ignition, the burning high-pressure gunpowder gas passes through the fire passage and can more quickly enter the next set of ignition holes to ignite the launching gunpowder in the next launch chamber's pressurization chamber, thus achieving the effect of multiple fireworks launched in succession. This not only achieves the visual and auditory effects of multiple consecutive launches during firing, but also creates multiple sound, light, and color effects in the air, greatly enhancing the dual impact of visual and auditory experience and making it more visually appealing.

[0014] In the aforementioned fireworks, the width of the fire passage gradually decreases from the bottom to the top of the outer cylinder. This design creates a conical structure on the inner wall of the fire passage. When the high-pressure propellant gas passes through the fire passage, it is guided by the conical surface to ignite the fuse simultaneously, preventing the fuse from burning out. This achieves precise control over multiple consecutive shots, resulting not only in the visual and auditory effects of multiple consecutive shots during launch, but also in the creation of multiple sound, light, and color effects in the air, greatly enhancing the dual impact of visual and auditory experience and making the fireworks more visually appealing.

[0015] In the aforementioned fireworks, the bottom of the outer cylinder also has several pairs of gripping grooves, which are spaced apart along the extension direction of the wiring groove. Each pair of gripping grooves is symmetrically arranged on both sides of the fire passage. After the lead wire is embedded in the wiring groove, the wiring groove, gripping groove, and cutting groove are all filled with glue to achieve a seal, thereby forming a serpentine sealing layer at the bottom of the outer cylinder to fix the lead wire in the wiring groove, preventing the lead wire from falling off or getting damp. Due to the design of the fire passage, this fireworks can achieve multiple shots in succession, which also means that the sealing layer must simultaneously withstand the recoil force of multiple shots. The gripping groove design allows the sealing layer to be more firmly connected to the outer cylinder, and it will not fall off the outer cylinder even when withstanding the recoil force of multiple shots, thus further ensuring that this fireworks can achieve a precise control of multiple shots in succession.

[0016] In the aforementioned fireworks, a pair of gripping grooves are provided on both sides of the ignition passage between the ignition holes of each pair of adjacent firing chambers. The recoil force generated by the sealing layer at the ignition passage is the greatest. Through the above arrangement, the sealing layer can be more firmly connected to the outer cylinder, thereby further ensuring that the fireworks can achieve precise control of multiple bursts.

[0017] In the aforementioned fireworks, the gripping groove is a square conical groove with its diameter gradually decreasing from the opening to the bottom. The conical design of the gripping groove allows the adhesive to flow more smoothly towards the bottom, filling the entire groove and solidifying to tighten against the inner wall, resulting in a stronger gripping force. This allows the fireworks to withstand greater recoil after firing, further ensuring precise control and continuous firing of multiple shots.

[0018] Preferably, in the aforementioned fireworks, the cutting groove is a conical groove with its diameter decreasing sequentially from the opening to the bottom. The conical shape of the cutting groove allows the adhesive to flow more smoothly towards the bottom during filling, completely filling the groove and preventing gaps. This ensures effective cutting and guarantees that the ignition can only be transmitted downwards through the fuse. Simultaneously, the cutting groove also provides a certain gripping effect on the entire sealing layer. Furthermore, the square distribution of the cutting groove and other gripping grooves creates gripping points around the perimeter of the firing channel, resulting in a strong grip between the sealing layer and the outer cylinder. This allows the fireworks to withstand significant recoil, further ensuring precise control and continuous firing of multiple shots.

[0019] Preferably, in the aforementioned fireworks, the outer cylinder is also provided with several explosion-proof cavities. The design of these explosion-proof cavities can absorb and eliminate some of the impact force generated by the gunpowder firing, preventing the outer cylinder from bursting.

[0020] Preferably, in the aforementioned fireworks, the outer wall of the outer cylinder is further provided with several explosion-proof grooves. The design of the explosion-proof grooves can serve as reinforcement grooves, increasing the overall strength of the outer cylinder to a certain extent, while also absorbing and eliminating some of the impact force generated by the gunpowder firing, preventing the outer cylinder from bursting.

[0021] As a preferred feature, the bottom of the outer cylinder of the aforementioned fireworks is also provided with several material-saving grooves, which are corrugated. The design of the material-saving grooves can save materials, achieve overall lightweighting of the fireworks, and also act as a buffer energy-absorbing groove to absorb part of the impact force.

[0022] Compared with existing technologies, this firework has the following advantages:

[0023] 1. Through the combined design of the fire passage and the cut-off groove, it is possible to achieve precise control of the multi-shot burst effect. Not only can it achieve the visual and auditory effects of multi-shot burst during launch, but it can also create multiple sound, light and color effects in the air, greatly improving the dual impact of visual and auditory effects and making it more entertaining.

[0024] 2. The gripping groove design allows the sealing layer to connect more firmly with the outer cylinder, thereby further ensuring that this firework can achieve precise control and multi-shot burst effect. Attached Figure Description

[0025] Figure 1 This is a 3D image of the fireworks.

[0026] Figure 2 This is a cross-sectional view of the firework along its horizontal direction.

[0027] Figure 3 yes Figure 2 Enlarged view of point A in the middle.

[0028] Figure 4 This is a three-dimensional structural diagram of the outer cylinder in Example 1.

[0029] Figure 5 yes Figure 4 Enlarged view of point B in the middle.

[0030] Figure 6 yes Figure 5 Enlarged view of point C in the middle.

[0031] Figure 7 This is a longitudinal sectional view of the outer cylinder in Embodiment 1.

[0032] Figure 8 This is a three-dimensional structural diagram of the outer cylinder in Example 2.

[0033] Figure 9 yes Figure 8 Enlarged view of point D in the middle.

[0034] In the diagram, 1 is the outer cylinder; 1a is the firing chamber; 1b is the ignition hole; 1c is the wiring groove; 1d is the fire passage; 1e is the cut-off groove; 1f is the clamping groove; 1g is the explosion-proof chamber; 1h is the explosion-proof groove; 1i is the material-saving groove; 2 is the lead wire; 3 is the sealing adhesive layer; 4 is the inner cylinder; 5 is the effect gunpowder; and 6 is the launching gunpowder. Detailed Implementation

[0035] The following are specific embodiments of the present invention, which are described in conjunction with the accompanying drawings. However, the present invention is not limited to these embodiments.

[0036] Example 1

[0037] like Figure 1 and 2 As shown, this firework includes an outer cylinder 1 with several firing chambers 1a. Each firing chamber 1a also has an inner cylinder 4 filled with explosive propellant 5. A pressurized gas chamber is formed between the bottom end of the inner cylinder 4 and the bottom surface of the firing chamber 1a. This pressurized gas chamber is filled with propellant 6 for launching the inner cylinder 4. Each firing chamber 1a has an ignition hole 1b at its bottom. Each firing chamber 1a may have one or two ignition holes 1b at its bottom. In this embodiment, each firing chamber 1a has two ignition holes 1b at its bottom.

[0038] The bottom of the outer cylinder 1 has a wiring groove 1c, which is serpentine in shape. Ignition holes 1b all penetrate to the bottom wall of the wiring groove 1c, and a lead wire 2 is embedded within the wiring groove 1c. The bottom of the outer cylinder 1 also has several cutting grooves 1e, through which the wiring groove 1c passes. The width and depth of the cutting grooves 1e are greater than the width and depth of the wiring groove 1c. The bottom of the outer cylinder 1 also has several pairs of gripping grooves 1f, which are spaced apart along the extension direction of the wiring groove 1c. Sealing is achieved by filling the gripping grooves 1f and cutting grooves 1e with glue, thus forming a serpentine, plate-like sealing layer 3 at the bottom of the outer cylinder 1 to fix the lead wire 2 within the wiring groove 1c, preventing the lead wire 2 from falling off or getting damp. Specifically, as... Figure 2-6 As shown, a fire passage 1d is provided between each pair of adjacent cut-off slots 1e, and the fire passage 1d is opened on the bottom wall of the wiring slot 1c. At least two ignition holes 1b for each emission chamber are provided between each pair of adjacent cut-off slots 1e, and the ignition holes 1b of adjacent emission chambers 1a are connected by the aforementioned fire passage 1d. That is, the ignition holes 1b of adjacent emission chambers 1a are connected by the fire passage 1d between adjacent cut-off slots 1e. The two ignition holes 1b corresponding to the same emission chamber 1a may or may not be connected by a fire passage 1d. In this embodiment, the two ignition holes 1b within the same group are also connected by a fire passage 1d. The number of ignition holes 1b between each pair of adjacent cut-off slots 1e is determined according to the actual desired effect. The width of the fire passage 1d is smaller than the outer diameter of the lead wire 2. In other words, this firework can fire in double, triple, or quadruple bursts, depending on the desired effect. The number of bursts in each burst can be equal or unequal, meaning it can also achieve a combination of double, triple, or quadruple bursts, depending on the desired effect.

[0039] Furthermore, such as Figure 7 As shown, the fire passage 1d is a strip-shaped hole or a strip-shaped groove. The width of the fire passage 1d decreases gradually from the bottom to the top of the outer cylinder 1, so that the inner wall of the fire passage 1d has a conical structure design. When the burning high-pressure gunpowder gas passes through the fire passage 1d, it will be guided by the conical surface to ignite the fuse 2 simultaneously, thus preventing the fuse 2 from going out of flame.

[0040] like Figure 4-6 As shown, a pair of gripping grooves 1f are symmetrically arranged on both sides of the fire passage 1d between the ignition holes 1b of each adjacent two firing chambers 1a. The gripping groove 1f is a square conical groove with a diameter that gradually decreases from the opening to the bottom. When the glue is filled and coated, the glue can flow more smoothly to the bottom of the gripping groove 1f, filling the entire gripping groove 1f. After solidification, it expands and tightens on the inner wall of the gripping groove 1f, resulting in a larger gripping force. This allows the sealing glue layer 3 to be more firmly connected to the outer cylinder 1 and to withstand a larger recoil force after firing.

[0041] The cut-off groove 1e is a conical groove with its diameter gradually decreasing from the opening to the bottom. When the adhesive is applied, it flows more smoothly towards the bottom, filling the entire cut-off groove 1e and preventing gaps. This ensures the cut-off effect, allowing the ignition to be transmitted downwards only through the fuse 2. Simultaneously, the cut-off groove 1e also provides a certain gripping effect on the entire sealing layer 3. Furthermore, the cut-off groove 1e and the gripping grooves 1f are distributed in a square pattern, effectively creating gripping points around the perimeter of the fire passage 1d. This results in a strong gripping force between the sealing layer 3 and the outer cylinder 1, enabling it to withstand significant recoil after firing.

[0042] The outer cylinder 1 is also provided with several explosion-proof cavities 1g, which can absorb and eliminate part of the impact force generated by the gunpowder launch, preventing the outer cylinder 1 from bursting. At the same time, the outer peripheral wall of the outer cylinder 1 is also provided with several explosion-proof grooves 1h, which can act as reinforcing grooves, increase the overall strength of the outer cylinder 1 to a certain extent, and can also absorb and eliminate part of the impact force generated by the gunpowder launch, preventing the outer cylinder 1 from bursting.

[0043] After the fireworks are ignited, the lit fuse 2 ignites the propellant 6 in the first launching chamber 1a. The burning high-pressure propellant gas instantly rushes through the ignition channel 1d and enters the ignition hole 1b of the next launching chamber 1a, igniting the propellant 6 in that chamber. This process continues until the burning high-pressure propellant gas reaches the cut-off groove 1e, where it is blocked by the glue. This allows each of the previous launching chambers 1a to launch the inner cylinder 4 into the air and explode almost simultaneously, achieving the effect of multiple consecutive fireworks launches and simultaneously creating multiple sound, light, and color effects in the air. When the high-pressure propellant gas reaches the cut-off groove 1e, because the fuse 2 at the cut-off groove 1e is sealed with glue, the high-pressure propellant gas cannot continue to pass through. The high-pressure propellant gas can only continue to ignite the fuse 2, and the burning of the fuse 2 leads the fire to the ignition hole 1b of the next launching chamber 1a, thus creating a time difference, and then the cycle continues. In other words, this firework structure uses the cut-off slot 1e as a node, enabling precise control of multiple bursts. It not only achieves the visual and auditory effects of multiple bursts during launch but also creates multiple sound, light, and color effects in the air, greatly enhancing the dual impact of sight and sound and making it more visually appealing. This firework structure can achieve double, triple, or quadruple bursts, etc., depending on the desired effect. The number of bursts in each burst can be equal or unequal, meaning it can also achieve a mixture of double, triple, or quadruple bursts, depending on the desired effect.

[0044] Example 2

[0045] like Figure 8 and 9As shown, the structure of the fireworks in this embodiment is basically the same as that in Embodiment 1. The difference is that the bottom of the outer cylinder 1 is also provided with several material-saving grooves 1i. The material-saving grooves 1i are corrugated, which can save materials and achieve the overall lightweighting of the fireworks. At the same time, they can also act as buffer energy-absorbing grooves to absorb part of the impact force. In addition, in this embodiment, there is no fire passage 1d connecting the two cut-off grooves 1e and the group of ignition holes 1b closer to the latter cut-off groove 1e.

[0046] Example 3

[0047] The structure of the fireworks in this embodiment is basically the same as that in Embodiment 1. The difference is that the width of the fire passage 1d is smaller than the outer diameter of the lead wire 2. After the lead wire 2 is installed, it can better and more completely cover the fire passage 1d, and also act as a cover plate to cover the fire passage 1d. The lead wire 2 can isolate the fire passage 1d from the wiring groove 1c. When filling and applying glue, the glue will not flow into the fire passage 1d and cause blockage of the fire passage 1d.

[0048] The specific embodiments described herein are merely illustrative of the spirit of the invention. Those skilled in the art to which this invention pertains may make various modifications or additions to the described specific embodiments or use similar methods to substitute them, without departing from the spirit of the invention or exceeding the scope defined by the appended claims.

[0049] Although this document frequently uses terms such as outer cylinder 1, firing chamber 1a, ignition hole 1b, wiring groove 1c, fire passage 1d, cutting groove 1e, gripping groove 1f, explosion-proof chamber 1g, explosion-proof groove 1h, material-saving groove 1i, lead wire 2, sealing layer 3, inner cylinder 4, effect gunpowder 5, and launching gunpowder 6, the possibility of using other terms is not excluded. The use of these terms is merely for the convenience of describing and explaining the essence of the invention; interpreting them as any additional limitation would contradict the spirit of the invention.

Claims

1. A firecracker, comprising an outer cylinder (1) with several launching cavities (1a) in which gunpowder is contained, a bottom of each launching cavity (1a) is provided with a fire hole (1b), a bottom of the outer cylinder (1) is provided with a wiring slot (1c), the fire hole (1b) penetrates to a bottom wall of the wiring slot (1c), the wiring slot (1c) is provided with a fuse (2), the bottom of the outer cylinder (1) is further provided with several cutting slots (1e), the wiring slot (1c) penetrates through the cutting slots (1e), and the width and depth of the cutting slots (1e) are greater than the width and depth of the wiring slot (1c), characterized in that, A fire-passing channel (1d) is arranged between every two adjacent truncated grooves (1e) and is opened on the bottom wall of the wiring groove (1c). A fire-leading hole (1b) corresponding to at least two of the above-mentioned emitting cavities (1a) is arranged between every two adjacent truncated grooves (1e), and the fire-leading holes (1b) of adjacent two emitting cavities (1a) are communicated through the above-mentioned fire-passing channel (1d). The lead wire (2) can cover the fire-passing channel (1d). The wiring groove (1c) and the truncated groove (1e) are filled with glue to form a sealing glue layer (3) capable of fixing the lead wire (2) in the wiring groove (1c).

2. The firework according to claim 1, wherein The fire-passing channel (1d) is a strip-shaped hole or a strip-shaped groove.

3. The firework according to claim 1 or 2, characterized in that, The width of the fire-passing channel (1d) decreases in turn from the bottom to the top of the outer cylinder (1).

4. The firework according to claim 1 or 2, wherein The bottom of the outer cylinder (1) further has a plurality of pairs of gripping grooves (1f) which are distributed at intervals along the extension direction of the wiring groove (1c). Each pair of gripping grooves (1f) is symmetrically arranged on both sides of the fire-passing channel (1d).

5. The firework according to claim 4, wherein A pair of gripping grooves (1f) is arranged on both sides of the fire-passing channel (1d) between every two adjacent fire-leading holes (1b) of the emitting cavities (1a).

6. The firework according to claim 5, wherein The gripping grooves (1f) are square tapered grooves, and the caliber decreases in turn from the groove mouth to the groove bottom.

7. The firework according to claim 1 or 2, wherein The truncated groove (1e) is a tapered groove, and the caliber decreases in turn from the groove mouth to the groove bottom.

8. The firework according to claim 1 or 2, wherein The outer cylinder (1) further has a plurality of explosion-proof cavities (1g) opened thereon.

9. The firework according to claim 1 or 2, wherein The width of the fire-passing channel (1d) is smaller than the outer diameter of the lead wire (2).

10. The firework according to claim 1 or 2, wherein The bottom of the outer cylinder (1) further has a plurality of material-saving grooves (1i) which are in a corrugated shape.

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