Pyrotechnic flare with non-chemical igniter

Abstract

The utility model discloses a kind of fireworks and fireworks are used without medicine ignition device, including plug sleeve, fuse, tight sleeve and the ignition assembly with some ignition chip, fuse is arranged in plug sleeve, ignition assembly is arranged in tight sleeve, and tight sleeve can limit the separation of ignition chip from its one end;Plug sleeve and fuse can be inserted into tight sleeve from the opposite end of tight sleeve under the action of external force, realize the abutment communication of one end of fuse and ignition chip, and tight sleeve also tight plug sleeve to clamp fixed fuse;Ignition chip can generate high temperature heat to ignite fuse after electrification.The fireworks and fireworks are used without medicine ignition device with simple structure, small size, good detonation effect, product consistency, stability, reliability and use safety and the like, very good meet the use demand of fireworks and other launch class products.

Description

Technical Field

[0001] This utility model relates to the field of ignition equipment technology, and in particular to a non-explosive ignition device for fireworks. Background Technology

[0002] Currently, fireworks and other pyrotechnic displays on the market all require an ignition device to detonate. However, traditional ignition devices have the following shortcomings:

[0003] ① Traditional ignition devices require dipping in ignition powder, which involves wrapping the ignition powder around the bridge wire. However, due to the difficulty in precisely controlling the amount and properties of the ignition powder, the ignition effect of ignition devices varies greatly, seriously affecting the explosive effect of incendiary products.

[0004] ② Because traditional ignition devices contain chemicals, they not only make the manufacturing process difficult and dangerous, but also hinder the transportation, storage, installation and use of ignition devices.

[0005] In view of this, in order to better meet the development needs of fireworks, pyrotechnics and other pyrotechnic products, this utility model is proposed. Summary of the Invention

[0006] To overcome the above-mentioned defects, this utility model provides a powder-free igniter for fireworks, which has the advantages of simple structure, small size, good ignition effect, and very high product consistency, stability, reliability and safety of use, and well meets the use needs of fireworks and other flammable products.

[0007] The technical solution adopted by this utility model to solve its technical problem is: a firework-free igniter, comprising a plug, a lead wire, a tightening sleeve, and an ignition assembly with an ignition chip. The lead wire passes through the plug, and the ignition assembly passes through the tightening sleeve. The tightening sleeve can restrict the ignition chip from detaching from one end. The plug and the lead wire can be inserted into the tightening sleeve from the opposite end under the action of external force, so that one end of the lead wire abuts and communicates with the ignition chip, while the tightening sleeve also tightens the plug to clamp and fix the lead wire. In addition, the ignition chip can generate high temperature heat after being energized to ignite the lead wire.

[0008] As a further improvement of this utility model, the lead wire is a safety lead wire or a fast lead wire.

[0009] As a further improvement of this utility model, the ignition chip is provided with a substrate and a connection line pattern and a resistance wire respectively disposed on the front side of the substrate. The connection line pattern and the resistance wire are electrically connected according to the product electrical design requirements to jointly form a heating circuit.

[0010] One end of the lead wire can be connected to the heating circuit.

[0011] As a further improvement of this utility model, the tightening sleeve is a sleeve-shaped structure with openings at both ends in the axial direction, and the central axis of the tightening sleeve is perpendicular or parallel to the front side of the substrate.

[0012] As a further improvement of this utility model, the ignition assembly is also provided with a connector. One end of the connector is fixedly connected to and electrically connected to the heating circuit, and the other end of the connector extends out of the tightening sleeve for electrical connection with an external power supply.

[0013] As a further improvement of this utility model, the connector is made of wire or copper busbar.

[0014] As a further improvement of this utility model, the connection line pattern is configured to be no less than two, the resistance wire is configured to be at least one, and the connection line pattern and the resistance wire are connected in series alternately to form the heating circuit.

[0015] The ignition chip is further provided with a pad disposed on the back of the substrate and electrically connected to the heating circuit. The pad is fixedly connected to one end of the connector and electrically connected.

[0016] As a further improvement of this utility model, the plug sleeve is provided with a sleeve-shaped base and a conical clamping part formed by multiple spring pieces, and the conical clamping part is coaxially arranged on one end of the base.

[0017] As a further improvement of this utility model, a plurality of the spring pieces are spaced apart circumferentially along the base and integrally disposed on one axial end of the base.

[0018] As a further improvement of this utility model, the tightening sleeve is provided with a conical inner cavity that matches the shape of the conical clamping part, and when the tightening sleeve is fitted outside the conical clamping part under the action of external force, the multiple spring pieces can be gathered together under the tightening action of the conical inner cavity of the tightening sleeve.

[0019] In addition, the base shaft end can stop and limit the tightening sleeve.

[0020] The beneficial effects of this utility model are as follows: The powder-free igniter of this utility model has the following advantages: ① The powder-free igniter can achieve a timely response and a powerful detonation effect, which well meets the usage requirements of fireworks and other flaming products. ② The powder-free igniter has a simple structure and small size, making it easy to mass-produce, and the consistency, stability, and reliability of the produced igniter products are very high. ③ The powder-free igniter can effectively avoid the safety hazards of traditional gunpowder-based igniters in production, transportation, and storage, and has very high safety, which can better promote the development of flaming products. ④ The powder-free igniter can be widely used in various types of fire-fighting products and has strong versatility. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the structure of the firework igniter without explosives described in Embodiment 1 of this utility model;

[0022] Figure 2 for Figure 1 One of the partial structural schematic diagrams of the ignition device without propellant shown;

[0023] Figure 3 for Figure 2 A schematic diagram of the main structure of the ignition chip shown in the figure;

[0024] Figure 4 for Figure 2 A rear view schematic diagram of the ignition chip shown;

[0025] Figure 5 for Figure 1 The second partial structural schematic diagram of the ignition device without propellant shown;

[0026] Figure 6 for Figure 1 A schematic diagram of the cross-sectional structure of the tightening sleeve shown;

[0027] Figure 7 for Figure 5 An enlarged structural diagram of part A shown in the image;

[0028] Figure 8 This is a schematic diagram of the structure of the firework igniter without explosives described in Embodiment 2 of this utility model;

[0029] Figure 9 for Figure 8 A partial structural schematic diagram of the ignition device without propellant shown;

[0030] Figure 10 This is a schematic diagram of the structure of the ignition component in the firework igniter without explosives described in Embodiment 3 of this utility model;

[0031] Figure 11 for Figure 10A schematic diagram of the structure when the ignition assembly and the lead wire are assembled together;

[0032] Figure 12 for Figure 10 A magnified schematic diagram of the ignition chip described herein;

[0033] Figure 13 This is a schematic diagram of the structure of the ignition chip in the firework igniter without gunpowder described in Embodiment 4 of this utility model.

[0034] Referring to the accompanying drawings, the following explanations are provided:

[0035] 1. Sleeve; 10. Base; 11. Conical clamping part; 110. Spring; 111. Toothed; 2. Lead wire; 3. Tightening sleeve; 30. Opening A; 31. Opening B; 32. Pressing strip; 4. Ignition assembly; 40. Ignition chip; 400. Substrate; 401. Connection circuit pattern; 402. Resistance wire; 403. Solder pad; 41. Connector. Detailed Implementation

[0036] The preferred embodiments of this utility model will be described in detail below with reference to the accompanying drawings.

[0037] Example 1

[0038] Please see the appendix Figure 1 To be continued Figure 7 As shown, this embodiment 1 provides a powder-free igniter for fireworks, which includes a plug 1, a lead wire 2, a tightening sleeve 3, and an ignition assembly 4 with an ignition chip 40. The lead wire 2 is a safety lead wire and is threaded through the plug 1. The ignition assembly 4 is threaded through the tightening sleeve 3, and the tightening sleeve 3 can control the ignition chip 40 from one end (i.e., the plug 1). Figure 6 The sleeve 1 and the lead wire 2 can be released from the opposite end of the tightening sleeve 3 (i.e., the attached end) under the action of external force to restrict their movement; Figure 6 The lead wire 2 (with an opening A30) is inserted into the tightening sleeve 3, so that one end of the lead wire 2 is in contact with the ignition chip 40, while the tightening sleeve 3 also tightens the plug sleeve 1 to clamp and fix the lead wire 2. In addition, the ignition chip 40 can instantly generate high temperature heat after being powered on to ignite the lead wire 2. It can be understood that the working principle of the non-explosive igniter described in this embodiment 1 is as follows: when the ignition chip 40 is connected to an external power supply, the ignition chip 40 can instantly generate high temperature heat (specifically up to about 3200℃) to ignite the lead wire 2, thereby quickly detonating the initiating and high explosives in the fireworks, achieving a timely response (response time can reach microsecond level) and a powerful detonation effect, which well meets the usage requirements of fireworks and other pyrotechnic products.

[0039] In addition, the aforementioned safety fuse refers to a low-speed fuse with a burning speed controlled within 3 cm / s, which provides sufficient time for the person setting off the fireworks to retreat to a safe distance before the fireworks explode, thus ensuring the safety of the person setting off the fireworks.

[0040] The following provides a detailed description of the specific structure of the ignition device without fuel described in Embodiment 1.

[0041] Please continue to refer to the appendix. Figure 1 and attached Figure 5 As shown, the preferred implementation structure of the plug sleeve 1 in this embodiment 1 is as follows: the plug sleeve 1 has a sleeve-shaped base 10 and a conical clamping part 11 formed by multiple spring pieces 110. The conical clamping part 11 is coaxially disposed on one end of the base 10. It can be understood that in the structure of the plug sleeve 1, the base 10 and the conical clamping part 11 are coaxial and interconnected. Moreover, the inner diameter of the base 10 and the inner diameter of the small end of the conical clamping part 11 are both configured to be slightly larger than the outer diameter of the lead wire 2. This facilitates the lead wire 2 to pass through the base 10 and the conical clamping part 11, and also achieves a certain degree of restraint on the lead wire 2, which is beneficial for the subsequent tightening sleeve 3 to tighten the conical clamping part 11 to securely clamp and fix the lead wire 2.

[0042] Furthermore, in this embodiment 1, a plurality of spring pieces 110 are circumferentially spaced and integrally disposed on one axial end of the base 10, and the inner surfaces of the plurality of spring pieces 110 are integrally formed with teeth 111 (see Appendix). Figure 7 (as shown), to enhance the stability of the multiple springs 110 clamping the lead wire 2.

[0043] Please continue to refer to the appendix. Figure 1 and attached Figure 6 As shown, the preferred implementation structure of the clamping sleeve 3 in this embodiment 1 is as follows: the clamping sleeve 3 is a sleeve-shaped structure with openings at both ends in the axial direction. Specifically, the clamping sleeve 3 has an opening A30, an opening B31, and a conical inner cavity that matches the shape of the conical clamping part 11. The opening A30 and the opening B31 are respectively connected to the conical inner cavity. The inner diameter of the opening A30 is larger than the inner diameter of the opening B31, and the inner diameter of the opening B31 is smaller than the size of the ignition chip 40 (specifically, smaller than the size of the substrate 400 described below), so as to restrict the ignition chip 40 from detaching from the clamping sleeve 3 through the opening B31. In addition, when the tightening sleeve 3 is fitted onto the conical clamping part 11 under the action of external force, the multiple spring pieces 110 can be gathered together under the tightening action of the conical inner cavity of the tightening sleeve 3 to clamp and fix the lead wire 2. At the same time, one shaft end of the base 10 can stop and limit the tightening sleeve 3.

[0044] Furthermore, in this embodiment 1, multiple pressure strips 32 are spaced apart on the inner wall of the tightening sleeve 3. Each of the multiple pressure strips 32 corresponds to a multiple of the spring pieces 110. In this way, when the tightening sleeve 3 is fitted over the conical clamping part 11, the multiple pressure strips 32 can press against the multiple spring pieces 110 one by one, so as to realize that the multiple spring pieces 110 can be synchronously, quickly and stably gathered / closed.

[0045] Please continue to refer to the appendix. Figure 2 To be continued Figure 4 As shown, the preferred implementation structure of the ignition component 4 in this embodiment 1 is as follows: the ignition component 4 is provided with an ignition chip 40 and a connector 41, wherein the ignition chip 40 is provided with a substrate 400 and a connection line pattern 401 and a resistance wire 402 respectively disposed on the front side of the substrate 400. The connection line pattern 401 and the resistance wire 402 are electrically connected according to the product electrical design requirements to jointly form a heating circuit; one end of the connector 41 is welded and fixed to the heating circuit and electrically connected, and the other end of the connector 41 extends out of the tightening sleeve 3 for electrical connection with an external power supply.

[0046] Furthermore, in this embodiment 1, based on the lead wire 2 structure, the front side of the substrate 400 is designed as a plane, and the front side of the substrate 400 is perpendicular to the central axis of the clamping sleeve 3. (See attached drawing for details.) Figure 2 As shown. Understandably, on the one hand, since the front surface of the substrate 400 is flat and perpendicular to the central axis of the clamping sleeve 3, one end of the lead wire 2 can be easily and stably connected to the heating circuit; on the other hand, since the front surface of the substrate 400 is flat, the heating circuit (specifically the resistance wire 402) can instantly concentrate high-temperature heat, achieving a very good heat focusing effect, thereby greatly improving the ignition effect of the heating circuit. Furthermore, to further improve the ignition effect of the heating circuit, the resistance wire 402 in this embodiment 1 is preferably made of tungsten alloy material.

[0047] Furthermore, based on product design requirements, this embodiment 1 specifically designs the heating circuit as follows: three connecting line patterns 401 are configured, and two resistance wires 402 are configured. The three connecting line patterns 401 and the two resistance wires 402 are connected in series alternately to form the heating circuit. For details, please refer to the appendix. Figure 3 As shown.

[0048] In addition, to achieve the welding and electrical connection between the heating circuit and one end of the connector 41, this embodiment 1 also provides a solder pad 403 electrically connected to the heating circuit on the back side of the substrate 400 according to the circuit board processing technology. The solder pad 403 is welded and electrically connected to one end of the connector 41. It is understood that the back side of the substrate 400 is arranged back-to-back with its front side.

[0049] Furthermore, the connector 41 is made of wire or copper busbar. (See attached image) Figure 2 The example shown illustrates a case where the connector 41 uses a wire, but this embodiment 1 does not impose any restrictions on this.

[0050] As can be seen from the above, in addition to its excellent ignition effect, the powder-free igniter described in Embodiment 1 also has the following advantages: ① The powder-free igniter has a simple structure and small size, making it easy to mass-produce, and the consistency, stability, and reliability of the produced igniter products are very high. ② The powder-free igniter can effectively avoid the safety hazards of traditional gunpowder-containing igniters in the production, transportation, and storage stages, and has very high safety, which can better promote the development of flammable products. ③ The powder-free igniter can be widely used in various types of flammable products, and has strong versatility.

[0051] Example 2

[0052] This embodiment 2 also provides a powder-free igniter for fireworks. Compared with embodiment 1, the difference between the powder-free igniter in embodiment 2 and embodiment 1 is that the type of lead wire 2 used in the structure of the powder-free igniter in embodiment 2 is different from that in embodiment 1.

[0053] For details, please refer to the appendix. Figure 8 and 9 As shown, in the structure of the non-flammable igniter provided in this embodiment 2, the lead wire 2 is a quick lead wire.

[0054] Note: The fast fuse refers to a fast fuse with a burning speed of ≥3cm / s. It is used for internal connection of fireworks, connecting multiple launch tubes or gunpowder components in series to ensure the synchronicity and continuity of the fireworks' actions.

[0055] Apart from the differences mentioned above, the other structures in the ignition device without fuel described in this embodiment 2, such as the plug sleeve 1, the tightening sleeve 3, and the ignition assembly 4, can all adopt the same technical means as in embodiment 1, so they will not be described in detail here.

[0056] Understandably, the ignition device without explosives described in this embodiment 2 also has the advantages of simple structure, small size, good ignition effect, and very high product consistency, stability, reliability and safety of use, which well meet the use needs of fireworks and other pyrotechnic products.

[0057] Example 3

[0058] This embodiment 3 also provides a firework igniter without explosives. Compared with embodiment 1, the difference between the firework igniter in embodiment 3 and the type of the ignition chip 40 and the lead wire 2 used in the structure of the firework igniter in embodiment 3 are different from those in embodiment 1.

[0059] For details, please refer to the appendix. Figure 10 To be continued Figure 12 As shown, in the structure of the ignition device without fuel provided in this embodiment 3, the preferred implementation structure of the ignition chip 40 is as follows: the ignition chip 40 is provided with a substrate 400, a connecting circuit pattern 401, and a resistance wire 402. The substrate 400 has a front and a back side facing each other. The front side of the substrate 400 is flat and parallel to the central axis of the tightening sleeve 3. In addition, the substrate 400 is also provided with an arc-shaped hollow part. Two connecting circuit patterns 401 are provided, and one resistance wire 402 is provided. The two connecting circuit patterns 401 and the resistance wire 402 are connected in series alternately to form the heating circuit. The heating circuit is fixedly disposed on the front side of the substrate 400. In addition, a solder pad (not shown in the figure) electrically connected to the heating circuit is provided on the back side of the substrate 400. The solder pad is used to weld and fix to the connector 41 in the ignition assembly 4 and to be electrically connected.

[0060] The lead 2 is a quick lead, which can be connected to the heating circuit formed by the connection of two of the connection line patterns 401 and one of the resistance wires 402.

[0061] Apart from the differences mentioned above, other structures in the ignition device without gunpowder described in this embodiment 3, such as the plug sleeve 1, the tightening sleeve 3, and the connecting piece 41, can all adopt the same technical means as in embodiment 1, so they will not be described in detail here.

[0062] Example 4

[0063] This embodiment 4 also provides a powder-free igniter for fireworks, and the difference between the powder-free igniter in this embodiment 4 and that in embodiment 3 is that the shape of the substrate 400 in the structure of the powder-free igniter in this embodiment 4 is different from that in embodiment 3.

[0064] For details, please refer to the appendix. Figure 13 As shown, in the non-flammable igniter structure provided in this embodiment 4, the substrate 400 is a flat plate structure, and there is no cutout portion on it.

[0065] Apart from the differences mentioned above, other structures in the ignition device without gunpowder described in this embodiment 4, such as the plug sleeve 1, the lead wire 2, the tightening sleeve 3, the heating circuit, and the connector 41, can all adopt the same technical means as in embodiment 3, so they will not be described in detail here.

[0066] Understandably, the ignition devices without explosives described in Embodiments 3 and 4 also have the advantages of simple structure, small size, good ignition effect, and very high product consistency, stability, reliability and safety of use, which well meet the usage requirements of fireworks and other pyrotechnic products.

[0067] Finally, the suffixes "A", "B", etc. in the component names in this utility model patent specification (such as: opening A, opening B, etc.) are only for the convenience of clear description and are not intended to limit the scope of implementation of this utility model patent.

[0068] Many specific details have been set forth in the above description to provide a full understanding of this utility model. However, the above description is only a preferred embodiment of this utility model, and this utility model can be implemented in many other ways different from those described herein. Therefore, this utility model is not limited to the specific embodiments disclosed above. Furthermore, any person skilled in the art can make many possible variations and modifications to the technical solution of this utility model using the methods and techniques disclosed above, or modify it into equivalent embodiments with equivalent changes, without departing from the scope of the technical solution of this utility model. Any simple modifications, equivalent changes, and modifications made to the above embodiments based on the technical essence of this utility model, without departing from the content of the technical solution of this utility model, shall still fall within the protection scope of the technical solution of this utility model.

Claims

1. A powder-free ignition device for fireworks, characterized in that: The device includes a plug sleeve (1), a lead wire (2), a tightening sleeve (3), and an ignition assembly (4) with an ignition chip (40). The lead wire (2) passes through the plug sleeve (1), and the ignition assembly (4) passes through the tightening sleeve (3). The tightening sleeve (3) can restrict the ignition chip (40) from detaching from one end. The plug sleeve (1) and the lead wire (2) can be inserted together into the tightening sleeve (3) from the opposite end under the action of external force, so that one end of the lead wire (2) abuts and communicates with the ignition chip (40), while the tightening sleeve (3) also tightens the plug sleeve (1) to clamp and fix the lead wire (2). In addition, the ignition chip (40) can generate high temperature heat after being powered on to ignite the lead wire (2).

2. The fire-free igniter for fireworks according to claim 1, characterized in that: The lead (2) is a safety lead or a fast lead.

3. The fire-free igniter for fireworks according to claim 1, characterized in that: The ignition chip (40) is provided with a substrate (400) and a connection line pattern (401) and a resistance wire (402) respectively disposed on the front side of the substrate (400). The connection line pattern (401) and the resistance wire (402) are electrically connected according to the product electrical design requirements to jointly form a heating circuit. One end of the lead (2) can be connected to the heating circuit.

4. The fire-free igniter for fireworks according to claim 3, characterized in that: The tightening sleeve (3) is a sleeve-shaped structure with openings at both ends in the axial direction. The central axis of the tightening sleeve (3) is perpendicular or parallel to the front side of the substrate (400).

5. The fire-free igniter for fireworks according to claim 3, characterized in that: The ignition assembly (4) is also provided with a connector (41), one end of which is fixedly connected to and electrically connected to the heating circuit, and the other end of which extends out of the tightening sleeve (3) for electrical connection with an external power supply.

6. The fire-free igniter for fireworks according to claim 5, characterized in that: The connector (41) is made of wire or copper busbar.

7. The fire-free igniter for fireworks according to claim 5, characterized in that: The connection line pattern (401) is configured to be no less than two, the resistance wire (402) is configured to be at least one, and the connection line pattern (401) and the resistance wire (402) are connected in series alternately to form the heating circuit. The ignition chip (40) is also provided with a pad (403) disposed on the back of the substrate (400) and electrically connected to the heating circuit. The pad (403) is fixedly connected to one end of the connector (41) and electrically connected.

8. The fire-free igniter for fireworks according to claim 1, characterized in that: The plug sleeve (1) has a sleeve-shaped base (10) and a conical clamping part (11) formed by multiple spring pieces (110). The conical clamping part (11) is coaxially disposed on one end of the base (10).

9. The fire-free igniter for fireworks according to claim 8, characterized in that: Multiple spring clips (110) are spaced apart circumferentially along the base (10) and integrally disposed on one axial end of the base (10).

10. The fire-free igniter for fireworks according to claim 8, characterized in that: The tightening sleeve (3) is provided with a conical inner cavity that matches the shape of the conical clamping part (11), and when the tightening sleeve (3) is fitted outside the conical clamping part (11) under the action of external force, the multiple spring pieces (110) can be gathered together under the tightening action of the conical inner cavity of the tightening sleeve (3). In addition, one end of the base (10) can stop and limit the tightening sleeve (3).

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