Cartridge case structure with firing device

Abstract

The utility model provides a cartridge case structure with a firing device, which belongs to the technical field of military automation and comprises a bullet head, a bullet tail and a threaded connection mechanism. The bullet head contains launching powder, explosion powder and a star-shaped ignition opening, wherein the launching powder and the explosion powder are arranged in a separated mode. The bomb tail contains an electronic primer; the bullet head and the bullet tail are connected through two circles of half thread mechanisms. Before the cartridge case structure is used, the bullet head and the bullet tail are assembled in a matched mode, and the bottom firing coil generates voltage with specific frequency through electromagnetic induction to complete launching. The split type cartridge case structure connected through the thread mechanism is safer, more efficient and more convenient in the transportation, installation and replacement process; due to ignition of the resonant wireless power transmission circuit of the electronic primer and uniform distribution of the ignition electric heating wires, the controllability, safety and accuracy of work can be remarkably improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of military industrial automation and relates to a cartridge case structure with a firing device. Background Art

[0002] Currently, cartridge cases are primarily used in military, agricultural, and aviation fields, enjoying wide applications, ease of use, and high market demand. With continuous technological advancements, the production process for cartridge cases has become significantly automated and intelligent. However, during use, many types of products can experience issues such as jamming, inconvenient loading and unloading, misfires, and misfiring, reducing efficiency and safety, increasing economic and time costs, and being prone to empty rounds. Furthermore, most cartridge cases currently on the market lack firing functionality, particularly incomplete ignition systems. These include the lack of contactless electric firing or specific frequency firing capabilities, the insufficient heating area of inductive heating wires leading to a high rate of misfiring, and the non-threaded structure of split cartridge cases presents significant safety risks during transportation. Furthermore, unfired or partially used cartridges are difficult to disassemble and repair. Utility Model Content

[0003] In order to overcome the deficiencies of the above-mentioned technologies, the present invention provides a cartridge case structure with a firing device. The warhead and tail of the split structure are connected by a threaded mechanism, which greatly reduces the safety issues of the original tenon connection mechanism when the warhead and tail are separated during the firing process of the product, and the inconvenience of disassembling unused or unfired products, which leads to the inability to handle and repair them in a timely manner. It is conducive to the maintenance of misfire ammunition and improves the convenience of loading, unloading and transportation of ammunition. The electronic primer device with a resonant wireless power transmission circuit can only be excited at a specific frequency, avoiding problems such as accidental discharge and firing errors, and improving safety during transportation and firing. The dual-path heating scheme of the ignition heating wire has a five-stage heating effect, so that the heat it emits is no longer highly concentrated, but more uniform, reducing the probability of melting failure and insufficient heating power when heating a single heating wire, and improving the reliability of heat transmission and ignition process.

[0004] In order to achieve the above purpose, the technical solution adopted by the utility model is:

[0005] A cartridge case structure with a firing mechanism is described. The cartridge case is a split structure comprising a warhead 1 and a tail 2, which are connected by a threaded mechanism. The warhead 1 primarily stores propellant powder and launches the projectile. An electronic primer 3 is mounted at the bottom of the tail 2, with the top of the electronic primer 3 extending deep into the warhead 1. This is primarily used to ignite the propellant powder. The firing is completed by igniting the ignition powder 3-2 at the top of the electronic primer 3 using an ignition heating wire 4-1.

[0006] Furthermore, after checking the convenience and strength of assembly, the number of turns of the threaded mechanism between the warhead 1 and the tail 2 is selected to be one and a half turns, which has the best connection effect, the lowest processing difficulty and the best economic benefit. At the same time, the use of a threaded connection mechanism can avoid the situation where the structure installed by the tenon is affected by the power of the explosion during the firing process, and the warhead and tail are broken apart due to insufficient strength of the tenon structure. The threaded structure can be separated at any time after assembly for easy maintenance. During transportation, the warhead 1 and the tail 2 are transported separately to ensure transportation safety.

[0007] Furthermore, the electronic primer 3 includes a base, a primer head 3-2, a primer coil 3-3, a resonant capacitor 3-4, and an ignition heating wire 4-1. Specifically:

[0008] The primer head 3-2 is a vertically arranged, narrow-top, wide-bottomed cylinder embedded in a flat, cylindrical base. The primer coil 3-3 is a resonant inductor, mounted on the base around the primer head 3-2. The resonant capacitor 3-4 is mounted on the resonant inductor. During ignition, the primer coil 3-3 generates an induced current through electromagnetic induction with an external coil. The resonant inductor and resonant capacitor 3-4 form a resonant wireless power transmission circuit. The resonant frequency is determined by the inductance and capacitance values. Adjusting the coil's structure and capacitance changes the coil's firing frequency. The circuit fires only when the induced current frequency matches the circuit frequency, while also providing high-power power draw.

[0009] The two ends of the ignition heating wire 4-1 are fixed on the same side of the primer 3-2. Figure 5 、 Figure 6 As shown, single-sided, double-spot welding is employed, with the ignition heating wire 4-1 forming a double "U"-shaped bend, bypassing the top of the primer head 3-2. Compared to single-wire ignition, this design allows the ignition heating wire 4-1 to achieve a heating effect equivalent to twice the wire length during ignition. Heat is more evenly distributed across the top and sides of the primer head 3-2, achieving dual-path heating with a five-stage heating effect. This provides higher thermal output and improves ignition efficiency and success rate.

[0010] The installation and working process of a cartridge case structure with a firing device is as follows:

[0011] First, the propellant powder and the lift pellet are loaded into the warhead 1. The two propellants are isolated and sealed. Furthermore, the propellant powder and the warhead base are separated to ensure safe transportation and ignition. During transportation, the warhead 1 and tail 2 are stored separately. Before assembling the magazine, the warhead 1 (containing the propellant powder and lift pellet) and tail 2 (with the electronic primer 3) are assembled using a threaded mechanism. Tightening the threads one and a half turns completes the cartridge case assembly.

[0012] Upon receiving a command to launch ammunition, an external power supply provides an electromagnetic induction voltage of a specific frequency to the external coil, causing electromagnetic induction between the external electromagnetic coil and the primer coil 3-3 at the bottom of the projectile tail 2 at a non-contact distance of less than 5 mm, thereby generating an induced current. When the energy of the induced current reaches the ignition energy of the electronic primer 3, the ignition heating wire 4-1 ignites the ignition charge 3-1, completing the launch of the projectile. After the projectile is launched to the designated position, the projectile explodes, achieving a specific working effect.

[0013] After all cartridge cases have been fired, check for misfires. Remove any misfired cartridges from the magazine and loosen the threaded mechanism to perform a separate overhaul of the ammunition. Once the overhaul is complete, tighten the threaded mechanism again and insert the cartridge into the magazine for the next cycle.

[0014] The beneficial effects of the utility model are:

[0015] (1) The split shell structure provided by the present invention, which is connected by a threaded mechanism, is safer, more efficient, and more convenient during transportation, installation, use, and replacement, and can significantly improve work efficiency and accuracy. The threaded connection mechanism has the advantages of simple structure, reliable connection, convenient assembly and disassembly, and strong interchangeability. It can simplify the assembly and disassembly process, improve the efficiency of product production and product maintenance, and at the same time, the threaded connection can provide sufficient strength and stability, ensure the firmness of the connection, reduce economic costs and time costs, and have significant economic benefits.

[0016] (2) At the same time, the ignition system of the electronic primer has a resonant inductor coil and a resonant capacitor, which together form a resonant wireless power transmission circuit. The frequency characteristics of the circuit can be changed by adjusting the values of the inductor and capacitor. This ensures that the ammunition can be ignited and fired only when the frequency of the input voltage matches the resonant frequency of the circuit. This ensures the safety of the ignition and transportation process and enhances the controllability of the ammunition firing safety.

[0017] (3) At the same time, the dual-path heating scheme of the ignition heating wire has a five-stage heating effect, which makes the heat distribution range of the ignition heating wire wider and the heating speed faster, reducing the probability of the heating wire fusing failure, improving the output heat power and the success rate of the ignition process, and accelerating the response speed of the system; the ignition powder wraps the primer head and the ignition heating wire, which can fully absorb the heat emitted by the heating wire and reduce heat loss. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 This is a schematic diagram of a bullet of the cartridge case structure of the present invention;

[0019] Figure 2 This is a schematic diagram of the tail of the cartridge case structure of the present invention;

[0020] Figure 3 This is a schematic diagram of an electronic primer containing ignition powder in a cartridge case structure of the present invention;

[0021] Figure 4 This is a schematic diagram of an electronic primer without ignition powder in the cartridge case structure of the present invention;

[0022] Figure 5 This is a front view of the electronic primer of the cartridge case structure of the present invention;

[0023] Figure 6 This is a rear view of the electronic primer of the cartridge case structure of the present invention;

[0024] In the picture: 1 warhead, 2 tail, 3 electronic primer; 3-1 ignition powder, 3-2 primer head, 3-3 primer coil, 3-4 resonant capacitor, 4-1 ignition heating wire. DETAILED DESCRIPTION

[0025] The present invention will be further described in detail below through specific implementations and in conjunction with the accompanying drawings.

[0026] Figure 1 The figure shows the overall structural diagram of the warhead, which is cylindrical in shape. The top of the warhead shell is chamfered and the bottom is provided with a threaded mechanism for connecting to the tail of the warhead.

[0027] Figure 2 The figure shows the overall structure of the tail. The bottom of the tail shell is provided with chamfers and threaded mechanisms. The chamfers facilitate loading and unloading, and the threaded mechanism is used to connect the warhead.

[0028] Figure 3 The figure shows a schematic diagram of an electronic primer with ignition powder, including a primer head 3-2, a primer coil 3-3, a resonant capacitor 3-4, and an ignition heating wire 4-1. The primer head 3-2 is a cylindrical body shaped like a "convex" character, embedded in a flat cylindrical base. The primer coil 3-3 is mounted on the base, centered around the primer head 3-2, and the resonant capacitor 3-4 is mounted on the ignition coil. During ignition, the primer coil 3-3 generates an induced current through electromagnetic induction with an external coil. The resistance of the primer coil 3-3 and the capacitance of the resonant capacitor 3-4 are both preset fixed values, forming a tuned circuit. This ensures that the ignition powder 3-1 will only ignite when the frequency of the induced voltage matches the preset frequency.

[0029] The two ends of the ignition heating wire 4-1 located at the top of the primer head 3-2 are fixed on the same side of the primer head 3-2. Figure 5 、 Figure 6As shown, the heating wire is in a "U" shape as a whole, passing around the top of the primer head 3-2 and fixed on the other side of the primer head 3-2. Compared with ignition with a single heating wire, the installation method of this design can make the heat emitted by the heating wire more evenly distributed on the top and both sides of the primer head 3-2 during ignition. It has dual-path heating and a five-stage heating effect, which can improve the efficiency and success rate of ignition.

[0030] The installation and working process of a cartridge case structure with a firing device is described using a bird-repelling bullet as an example:

[0031] During transportation and installation, the propellant and explosive powder are first loaded into the warhead 1. The two powders are then isolated and sealed. Furthermore, the powder and the warhead base are separated to ensure safe transportation and ignition. During transportation, the warhead 1 and the tail 2 are stored separately. Before assembling the magazine, the warhead 1 (containing the propellant and explosive powders) and the tail 2 (containing the electronic primer 3) are assembled using a threaded mechanism. Tightening the threads two and a half turns completes the assembly of the bird repellent projectile. The projectile is then secured to the base plate using a retaining bar, spring, and other mechanisms to complete the magazine.

[0032] After the magazine is filled with bird-repellent bullets, the magazine is sent to the bird-repellent device that needs to replace the magazine for replacement, and the work starts after the installation is completed.

[0033] When the command to launch ammunition is received, the external power supply is energized and the external electromagnetic coil is powered through the lead, so that it generates electromagnetic induction with the primer coil 3-3 at the bottom of the tail 2, thereby generating an induced current. When the frequency of the induced voltage reaches the preset frequency of the tuning circuit of the electronic primer 3, the ignition heating wire 4-1 is heated to ignite the ignition powder 3-1, completing the launch of the explosive. After the explosive is launched to the designated location, the explosive explodes, completing the task of driving away the flock of birds.

[0034] After all the bird-repellent shells have been fired, check for misfires. Remove the misfire shells from the magazine and loosen the threaded mechanism to perform a separate inspection. After the inspection is complete, tighten the threaded mechanism again and insert the shells into the magazine to start the next cycle.

[0035] The above-described embodiments merely express the implementation methods of the present invention, but they cannot be understood as limiting the scope of the patent of the present invention. It should be pointed out that for those skilled in the art, several variations and improvements can be made without departing from the concept of the present invention, and these all fall within the scope of protection of the present invention.

Claims

1. A cartridge case structure with a firing device, characterized in that: The cartridge case structure is a split structure, comprising a warhead (1) and a tail (2), wherein the warhead (1) and the tail (2) are connected by a threaded mechanism; the warhead (1) is used to store propellant powder and launch projectiles; an electronic primer (3) is installed at the bottom of the tail (2), and the top of the electronic primer (3) is inserted into the warhead (1) to ignite the propellant powder, and an ignition heating wire (4-1) is used to ignite a primer head (3-2) at the top of the electronic primer (3) to complete the launch; The electronic primer (3) comprises a base, a primer head (3-2), a primer coil (3-3), a resonant capacitor (3-4), and an ignition heating wire (4-1). Specifically: The primer head (3-2) is a column in the shape of a "convex" character, arranged vertically, narrow at the top and wide at the bottom, and the bottom of the primer head (3-2) is embedded in the base; The primer coil (3-3) is a resonant inductance coil, which is mounted on the base around the primer head (3-2). The resonant capacitor (3-4) is mounted on the resonant inductor coil, and both ends of the ignition heating wire (4-1) are fixed on the same side of the primer head (3-2); the primer coil (3-3) generates an induced current in cooperation with an external coil to complete the final emission; the primer coil (3-3) and the resonant capacitor (3-4) form a resonant wireless power transmission circuit; and adjusting the structure and capacitance value of the coil can change the firing frequency of the coil.

2. A cartridge case structure with a firing device according to claim 1, characterized in that: The ignition heating wire (4-1) is welded by single-sided double-spot welding. The ignition heating wire (4-1) is bent in a double "U" shape as a whole and passes around the top of the primer (3-2).

3. The cartridge case structure with a firing device according to claim 1, characterized in that: The number of turns of the threaded mechanism between the bullet head (1) and the bullet tail (2) is 1.5 turns.

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