Combined firework with anti-deviation positioning structure

Abstract

The utility model discloses a kind of combined fireworks with anti-deviation positioning structure, it is related to combined fireworks technical field, including shell, support base, propellant cartridge, limiting slot, the shell is provided with the positioning mechanism for preventing deviation positioning to multiple propellant cartridges.By positioning mechanism, the convenient fixation and stable support of multiple propellant cartridges can be realized, not only can effectively improve the assembly efficiency and precision of combined fireworks, but also can prevent propellant cartridge from loosening, displacement due to vibration or external force touch before assembly, transportation or setting off, simultaneously by the oblique support to the outer wall of shell, further improve the anti-toppling performance of shell whole, avoid combined fireworks from tilting or completely toppling when setting off, so that the stability and security of combined fireworks whole can be further improved, effectively ensure the reliability and user experience of setting-off process.

Description

Technical Field

[0001] This utility model relates to the field of combination fireworks technology, specifically a combination firework with an anti-deviation positioning structure. Background Technology

[0002] Combination fireworks, commonly known as "potted flowers" or "cake fireworks," are a type of fireworks product that integrates multiple single-tube firework effects (such as firework shells, whistles, etc.) onto a base via fuses. By simply igniting the main fuse once, multiple colors, patterns, and effects can be launched continuously and automatically in a preset sequence, thus creating a rhythmic miniature fireworks display.

[0003] In existing combination fireworks production, the connection between the propellant cartridges and the support frame (or base) is usually achieved through manual gluing or simple snap-fit ​​stacking. This provides a limiting placement function for the propellant cartridges. However, during use, due to the influence of transportation vibration and external force before ignition, multiple propellant cartridges are prone to loosening and displacement. This results in the fireworks tilting or even completely falling over due to the huge and uneven recoil force during ignition, causing the spray angle of the propellant cartridges to deviate from the preset vertical direction. This poses a serious safety threat to the igniters and the surrounding environment. Based on this, a combination fireworks with an anti-displacement positioning structure is now provided, which can eliminate the drawbacks of the existing device. Summary of the Invention

[0004] The purpose of this invention is to provide a combined firework with an anti-offset positioning structure to solve the problems in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: A combination firework with an anti-displacement positioning structure includes an outer shell, a support base slidably connected inside the outer shell, the support base extending to the bottom outside of the outer shell, multiple sets of propellant cartridges arranged equidistantly on the inner side of the outer shell, each set of propellant cartridges having multiple cartridges, and the multiple propellant cartridges arranged longitudinally on the inner side of the outer shell, a limit slot is provided at the contact position between the support base and the multiple propellant cartridges, the upper inner wall of the limit slot is frustum-shaped, and the outer shell is provided with a positioning mechanism for anti-displacement positioning of the multiple propellant cartridges; The positioning mechanism includes: Two fixed sleeves are symmetrically slidably connected inside the outer shell. The two fixed sleeves are glued to each other. Limiting rings are fixedly connected to the outer walls of multiple propellant cartridges. The limiting rings are located between the two fixed sleeves. The two fixed sleeves are slidably fitted onto the outer walls of the propellant cartridges and the limiting rings.

[0006] Based on the above technical solutions, this utility model also provides the following optional technical solutions: In one alternative embodiment, the positioning mechanism further includes: Support components mounted on the support base; The support components include: A support base frame is fixedly connected to the outer wall of the support base. The upper surface of the support base frame is square-shaped. Multiple support plates are fixedly connected to the top of the support base frame at equal intervals around the perimeter. The multiple support plates are slidably sleeved on the outer wall of the outer shell. The shape of the multiple support plates is L-shaped. The support plate is provided with a reinforcing component for providing stable support to the support plate; The supporting base frame is provided with a first docking component for limiting and docking with the outer shell; The outer casing is provided with a fitting assembly for fitting and limiting the top ends of multiple propellant cartridges.

[0007] In one alternative embodiment, the reinforcement component includes: Two support diagonal rods are symmetrically fixedly connected to the outer wall of the support plate. The two support diagonal rods are located at the end of the support plate away from the outer shell, and both support diagonal rods are fixedly connected to the support base frame.

[0008] In one alternative embodiment: the first docking component includes: Multiple second docking plates are fixedly connected to the top of the support base frame at equal intervals around the circumference. The multiple second docking plates are interleaved with the multiple support plates. A first positioning block is fixedly connected to the end of each of the multiple second docking plates near the propellant cartridge. A first docking slot is provided at the position where the outer shell meets the second docking plate for the second docking plate to slide. The second mating plate is provided with a first engaging component.

[0009] In one alternative: the first engaging assembly includes a first positioning block fixedly connected to the second docking plate near the end of the propellant cartridge, the upper surface of the first positioning block is inclined, and a first positioning groove that matches the outer wall of the first positioning block is provided at the position where the outer shell meets the first positioning block.

[0010] In one alternative: the sleeve assembly includes a limiting sleeve frame disposed on the upper surface of the housing, the limiting sleeve frame being slidably sleeved on the outer wall of a plurality of propellant cartridges; The limiting sleeve is provided with a second docking component.

[0011] In one alternative embodiment, the second docking component includes: Multiple first docking plates are fixedly connected to the bottom of the limiting sleeve frame at equal intervals around the circumference. The multiple first docking plates are interleaved with multiple supporting plates. A second docking slot is provided at the position where the outer shell meets the first docking plates for the first docking plates to slide. The first mating plate is provided with a second engaging component.

[0012] In one alternative: the second engaging assembly includes a second positioning block fixedly connected to one end of the first docking plate near the propellant cartridge, the lower surface of the second positioning block being inclined, and a second positioning groove that matches the outer wall of the second positioning block being provided at the junction of the outer shell and the second positioning block.

[0013] Compared with the prior art, the beneficial effects of this utility model are as follows: This invention, through a positioning mechanism, enables convenient fixing and stable support of multiple propellant cartridges. This not only effectively improves the assembly efficiency and precision of combination fireworks but also prevents the propellant cartridges from loosening or shifting due to vibration or external force before assembly, transportation, or ignition. Furthermore, by providing oblique support to the outer wall of the outer shell, the overall anti-tipping performance of the outer shell is further improved, preventing the combination fireworks from tilting or completely tipping over during ignition. This further enhances the overall stability and safety of the combination fireworks, effectively ensuring the reliability of the ignition process and the user experience. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the structure of this utility model.

[0015] Figure 2 This is a schematic diagram of the internal structure of the outer shell of this utility model.

[0016] Figure 3 For the present utility model Figure 2 A magnified schematic diagram of the structure at point A in the diagram.

[0017] Figure 4 For the present utility model Figure 2 A magnified schematic diagram of the structure at point B in the diagram.

[0018] Figure reference numerals: 1. Outer shell; 201. Limiting sleeve; 202. First docking plate; 203. Support plate; 204. Supporting diagonal rod; 205. Second docking plate; 206. First positioning block; 207. Fixing sleeve; 208. Limiting ring; 209. Supporting base frame; 2010. Second positioning block; 3. Propellant cartridge; 4. Supporting base; 5. Limiting slot. Detailed Implementation

[0019] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments.

[0020] In one embodiment, such as Figures 1-4 As shown, a combination firework with an anti-offset positioning structure includes an outer shell 1. A support base 4 is slidably connected inside the outer shell 1. The support base 4 extends to the outside of the bottom end of the outer shell 1. Multiple sets of propellant cartridges 3 are arranged horizontally and equidistantly on the inner side of the outer shell 1. Each set of propellant cartridges 3 has multiple cartridges. The multiple propellant cartridges 3 are arranged vertically on the inner side of the outer shell 1. Limiting slots 5 are provided at the positions where the support base 4 connects with the multiple propellant cartridges 3. The upper inner wall of the limiting slot 5 is frustum-shaped. The outer shell 1 is provided with a positioning mechanism for anti-offset positioning of the multiple propellant cartridges 3. The positioning mechanism includes: two fixed sleeve frames 207 symmetrically slidably connected inside the outer shell 1, the two fixed sleeve frames 207 being glued together, and a limiting ring 208 fixedly connected to the outer wall of multiple propellant cartridges 3, the limiting ring 208 being located between the two fixed sleeve frames 207, and the two fixed sleeve frames 207 being slidably sleeved on the outer wall of the propellant cartridges 3 and the limiting ring 208; In this embodiment, during assembly, the positioning mechanism can be used to easily fix multiple propellant cartridges 3. Then, the outer shell 1 is pushed to slide along the inner wall of multiple support plates 203 until the outer shell 1 is sleeved on the top outer wall of the support base 4. During this process, the positioning mechanism can be used to easily engage and connect the support base 4 and the outer shell 1, and provide oblique support to the outer wall of the outer shell 1, effectively improving the overall anti-tipping effect of the outer shell 1. Then, the fixed multiple propellant cartridges 3 are placed inside the outer shell 1. At this time, the positioning mechanism allows the multiple propellant cartridges 3 to be inserted into the multiple limiting slots 5 respectively, and the top of the multiple propellant cartridges 3 are limited and covered. During use, the positioning mechanism limits and supports the propellant cartridge 3, which can effectively prevent the propellant cartridge 3 from becoming loose or displaced due to transportation vibration or external force contact before ignition. At the same time, it can prevent the outer shell 1 from tilting or even falling over completely during ignition. In one embodiment, such as Figures 1-2 As shown, the positioning mechanism also includes a support component disposed on the support base 4; The support assembly includes: a support base frame 209 fixedly connected to the outer wall of the support base 4. The upper surface of the support base frame 209 is in the shape of a square platform. Multiple support plates 203 are fixedly connected to the top of the support base frame 209 at equal intervals in the circumference. The multiple support plates 203 are slidably sleeved on the outer wall of the outer shell 1. The multiple support plates 203 are all L-shaped. The support plate 203 is provided with a reinforcing component for providing stable support to the support plate 203; The supporting base frame 209 is provided with a first docking component for limiting and docking with the outer shell 1; The outer casing 1 is provided with a fitting assembly for fitting and limiting the top ends of multiple propellant cartridges 3; The reinforcement component includes two support diagonal rods 204 that are symmetrically fixedly connected to the outer wall of the support plate 203. The two support diagonal rods 204 are located at the end of the support plate 203 away from the outer shell 1. Both support diagonal rods 204 are fixedly connected to the support base frame 209. Through the cooperation of the support component and the reinforcement component, the outer wall of the outer shell 1 can be obliquely supported, which can effectively improve the overall anti-tipping effect of the outer shell 1. In one embodiment, such as Figures 1-4 As shown, the first docking assembly includes: a plurality of second docking plates 205 circumferentially and equidistantly fixedly connected to the top of the support base frame 209; the plurality of second docking plates 205 are interleaved with a plurality of support plates 203; a first positioning block 206 is fixedly connected to one end of each of the plurality of second docking plates 205 near the propellant cartridge 3; and a first docking slot is provided at the junction of the outer shell 1 and the second docking plates 205 for the second docking plates 205 to slide. The second docking plate 205 is provided with a first engaging component; The first engaging assembly includes a first positioning block 206 fixedly connected to the second docking plate 205 near the end of the propellant cartridge 3. The upper surface of the first positioning block 206 is inclined. A first positioning groove that matches the outer wall of the first positioning block 206 is provided at the position where the outer shell 1 meets the first positioning block 206. The second docking plate 205 is made of TPE plastic, so the second docking plate 205 itself has a certain elasticity. Through the cooperation of the first docking assembly and the first engaging assembly, the support base 4 and the outer shell 1 can be conveniently engaged and connected. In one embodiment, such as Figures 1-2 As shown, the socket assembly includes a limiting sleeve 201 disposed on the upper surface of the housing 1. The limiting sleeve 201 is slidably sleeved on the outer wall of a plurality of propellant cartridges 3. The top of the limiting sleeve 201 is provided with a dustproof film for covering the ports of the plurality of propellant cartridges 3. A second docking component is provided on the limiting sleeve 201; The second docking assembly includes: a plurality of first docking plates 202 that are circumferentially and equidistantly fixed to the bottom end of the limiting sleeve frame 201; the plurality of first docking plates 202 are interleaved with a plurality of supporting plates 203; and a second docking slot is provided at the position where the outer shell 1 meets the first docking plates 202 for the first docking plates 202 to slide. A second engaging assembly is provided on the first docking plate 202; The second engaging assembly includes a second positioning block 2010 fixedly connected to the first docking plate 202 near one end of the propellant cartridge 3. The lower surface of the second positioning block 2010 is inclined. A second positioning groove that matches the outer wall of the second positioning block 2010 is provided at the position where the outer shell 1 meets the second positioning block 2010. The first docking plate 202 is made of TPE plastic, so the first docking plate 202 itself has a certain elasticity. Through the cooperation of the sleeve assembly, the second docking assembly and the second engaging assembly, the top of the multiple propellant cartridges 3 can be limited and covered, effectively preventing the multiple propellant cartridges 3 from being loosened or displaced due to transportation vibration or external force contact before ignition.

[0021] The above embodiment discloses a combined firework with an anti-offset positioning structure. During assembly, multiple propellant cartridges 3 are sequentially inserted into the slots of a fixed frame 207 until the limiting ring 208, driven by the propellant cartridges 3, contacts the inner wall of the fixed frame 207, thereby initially limiting the multiple propellant cartridges 3. Then, another fixed frame 207 is fitted onto the top outer wall of the multiple propellant cartridges 3 and slides along the outer wall of the propellant cartridges 3 until the other fixed frame 207 contacts the upper surface of the first fixed frame 207. At this point, the two fixed frames 207 are joined and fixed by adhesive. At the same time, the upper and lower ends of the limiting ring 208 are squeezed and limited by the two fixed frames 207, which can conveniently fix the multiple propellant cartridges 3. Then, the outer shell 1 is pushed to slide along the inner wall of the multiple support plates 203 until the outer shell 1 contacts the upper surface of the support base frame 209. During this process, the outer shell 1 presses the upper surface of the second docking plate 205 by moving. At this time, the first positioning block 206 pushes the second docking plate 205 to deform under the pressure of the outer shell 1. When the outer shell 1 contacts the upper surface of the support base frame 209, the first positioning slot moves to the end of the first positioning block 206 under the drive of the outer shell 1. At the same time, the second docking plate 205 pushes the first positioning block 206 into the interior of the first positioning slot through its own elasticity. In this way, the support base frame 209 and the outer shell 1 can be conveniently engaged and connected. Then, the fixed multiple propellant cartridges 3 are placed inside the outer shell 1. At this time, the two fixed sleeve frames 207 slide along the inner wall of the outer shell 1 under the action of the propellant cartridges 3 via the limiting ring 208, so that the multiple propellant cartridges 3 can be inserted into the interior of the multiple limiting slots 5 respectively. Then, the limiting sleeve frame 201 is pushed to engage with the outer wall of the top of the multiple propellant cartridges 3. At the same time, the second positioning block 2010 is blocked by the outer wall of the outer shell 1, which pushes the first docking plate 202 to deform. When the second positioning block 2010 moves to the port of the second positioning slot through the first docking plate 202 under the action of the limiting sleeve frame 201, the first docking plate 202 pushes the second positioning block 2010 into the interior of the second positioning slot through its own elasticity, so as to realize the convenient engagement and docking of the limiting sleeve frame 201 and the outer shell 1. During use, the limiting support of the limiting sleeve 201, the fixing sleeve 207, the supporting back plate 203, the supporting diagonal bar 204 and the supporting bottom frame 209 can effectively prevent the propellant cartridge 3 from becoming loose or displaced due to transportation vibration or external force contact before ignition. At the same time, it can prevent the entire outer shell 1 from tilting or even completely falling over during ignition.

[0022] The above description is merely a specific embodiment of this application, but the scope of protection of this application is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in this application should be included within the scope of protection of this application. Therefore, the scope of protection of this application should be determined by the scope of the claims.

Claims

1. A combination firework with an anti-offset positioning structure, comprising a shell (1), wherein a support base (4) is slidably connected inside the shell (1), the support base (4) extends to the outside of the bottom end of the shell (1), and multiple sets of propellant cartridges (3) are arranged equidistantly on the inner side of the shell (1), wherein a set of propellant cartridges (3) comprises multiple cartridges, and the multiple propellant cartridges (3) are arranged longitudinally on the inner side of the shell (1), wherein a limiting slot (5) is provided at the contact position between the support base (4) and the multiple propellant cartridges (3), and the upper inner wall of the limiting slot (5) is frustoconical, characterized in that, The outer shell (1) is provided with a positioning mechanism for anti-deviation positioning of multiple propellant cartridges (3); the positioning mechanism includes two fixed sleeve frames (207) symmetrically slidably connected inside the outer shell (1), the two fixed sleeve frames (207) are glued to each other, and the outer walls of the multiple propellant cartridges (3) are fixedly connected with limit rings (208), the limit rings (208) are located between the two fixed sleeve frames (207), and the two fixed sleeve frames (207) are slidably sleeved on the outer walls of the propellant cartridges (3) and the limit rings (208).

2. A combination firework with an anti-deviation positioning structure according to claim 1, characterized in that, The positioning mechanism further includes: a support component set on the support base (4); the support component includes: a support base frame (209) fixedly connected to the outer wall of the support base (4), the upper surface of the support base frame (209) is square-shaped, and a plurality of support plates (203) are fixedly connected circumferentially at equal intervals at the top of the support base frame (209), the plurality of support plates (203) are slidably sleeved on the outer wall of the outer shell (1), and the shape of the plurality of support plates (203) is L-shaped; a reinforcement component for providing stable support for the support plates (203) is provided on the support plates (203); a first docking component for limiting docking with the outer shell (1) is provided on the support base frame (209); and a sleeve component for limiting the top of the plurality of propellant cartridges (3) is provided on the outer shell (1).

3. A combination firework with an anti-deviation positioning structure according to claim 2, characterized in that, The reinforcement component includes two support diagonal rods (204) symmetrically fixedly connected to the outer wall of the support plate (203). The two support diagonal rods (204) are located at the end of the support plate (203) away from the outer shell (1). Both support diagonal rods (204) are fixedly connected to the support base frame (209).

4. A combination firework with an anti-deviation positioning structure according to claim 2, characterized in that, The first docking assembly includes: a plurality of second docking plates (205) that are circumferentially and equidistantly fixed to the top of the support base frame (209); the plurality of second docking plates (205) are interleaved with a plurality of support plates (203); a first positioning block (206) is fixedly connected to one end of each of the plurality of second docking plates (205) near the propellant cartridge (3); a first docking slot is provided at the position where the outer shell (1) meets the second docking plate (205) for the second docking plate (205) to slide; and a first engaging assembly is provided on the second docking plate (205).

5. A combination firework with an anti-deviation positioning structure according to claim 4, characterized in that, The first engaging assembly includes a first positioning block (206) fixedly connected to the second docking plate (205) near the end of the propellant cartridge (3). The upper surface of the first positioning block (206) is inclined. A first positioning groove that matches the outer wall of the first positioning block (206) is provided at the position where the outer shell (1) meets the first positioning block (206).

6. A combination firework with an anti-deviation positioning structure according to claim 2, characterized in that, The fitting assembly includes a limiting frame (201) disposed on the upper surface of the outer shell (1), the limiting frame (201) being slidably fitted onto the outer wall of a plurality of propellant cartridges (3); a second docking assembly is provided on the limiting frame (201).

7. A combination firework with an anti-deviation positioning structure according to claim 6, characterized in that, The second docking assembly includes: a plurality of first docking plates (202) that are circumferentially and equidistantly fixed to the bottom end of the limiting sleeve frame (201), the plurality of first docking plates (202) being interleaved with a plurality of supporting plates (203), a second docking slot for sliding the first docking plates (202) being provided at the position where the outer shell (1) meets the first docking plates (202); and a second engaging assembly being provided on the first docking plates (202).

8. A combination firework with an anti-deviation positioning structure according to claim 7, characterized in that, The second engagement assembly includes a second positioning block (2010) fixedly connected to the first docking plate (202) near the end of the propellant cartridge (3). The lower surface of the second positioning block (2010) is inclined. A second positioning groove that matches the outer wall of the second positioning block (2010) is provided at the junction of the outer shell (1) and the second positioning block (2010).

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