Small-bore electrically operated bullet switch

Abstract

A small-caliber electric cartridge switch is located in the rear end face of the electric cartridge case and comprises a printed circuit board on one side of which an SMD momentary push button is mounted, one terminal of which protrudes on the other side of the printed circuit board. The second terminal of the momentary push button leads into the interior of the electric cartridge case. Above the momentary push button, an element is mounted which can be plastically deformed or pushed onto the push button to hold the push button in a depressed position. The technical result includes improved manufacturability of the small-caliber electric cartridge, provision of an overall size which is suitable for common revolver cylinders and repeating pistol magazines, and enabling checking of the operability of the small-caliber electric cartridge after complete assembly.

Description

Technical Field

[0001] This invention relates to a non-lethal, long-range, wireless electric shock weapon with an electric shock destruction device, specifically to a small-caliber electric bullet (electric bullet, projectile) for use in special law enforcement operations in areas where civilians may be present, and for civilian self-defense. Background Technology

[0002] As described in patent [1], a small-caliber electric bullet switch is used as an analogue for a switch used to activate the decompression current generator of the electric bullet during firing, in the proposed invention. The switch consists of a conductive film fixed to the edge of the projectile's rear end face, which serves as a first electrical contact, and an electrode fixed in a recess in the projectile's rear end face, which serves as a second electrical contact. In one embodiment of the switch, a sufficiently elastic film is pierced onto the electrode and deformed under the pressure of the propellant gas from the projectile ejected from the barrel, thereby connecting the contacts and closing the circuit of the power supply and the decompression current generator of the electric bullet to activate its operation. In another embodiment, under the pressure of the propellant gas from the projectile ejected from the barrel, the more rigid film serving as the first electrical contact bends, loses its initial longitudinal stability, and connects to the second contact electrode, thereby closing the circuit of the power supply and the decompression current generator of the electric bullet to activate its operation. In a third embodiment, the first contact is rigidly fixed to the rear end face of the projectile, and a second spring-loaded contact is disposed within the projectile's rear end face housing. Insulating material is located between the first and second contacts, and this insulating material is removed after the projectile leaves the weapon barrel due to the centrifugal force generated by the projectile's rotation acting on the material. In this case, the second spring-loaded contact connects to the first contact, thereby closing the circuit of the power supply and the deactivation current generator of the electric bullet to initiate its operation. The advantage of this analogous switch embodiment is that it is operable.

[0003] The disadvantage of the first switch implementation described above is that the longitudinal dimension of the switch is significant (accounting for 14.2% of the total length of the electric bullet casing), and the structure of the punctured membrane is extremely complex and cannot be manufactured.

[0004] The disadvantages of the second switch implementation described above are also that the longitudinal dimension of the buckling switch is significant (accounting for 14.2% of the total length of the cartridge case), and it is difficult to precisely manufacture a membrane with the required rigidity and elasticity, and it also requires uniformity of the metallic properties of the membrane material.

[0005] The disadvantage of the third embodiment of the switch described above is also that the longitudinal dimension of the switch is significant (accounting for 14.5% of the total length of the bullet casing), because additional space must be provided inside the casing to accommodate the stroke of the spring-loaded contact. In addition, the third embodiment described above does not allow the bullet to be fired from a smoothbore barrel (e.g., a lancet-shaped barrel). For information on the critical role of the longitudinal dimension of the switch in the bullet, see patent [2] (Embodiment of the Invention).

[0006] Another drawback of the aforementioned analogues is that the contact surfaces must be coated with an antioxidant material (such as gold plating) to prevent oxidation during storage, which complicates the manufacturing process and increases costs.

[0007] Another drawback of the aforementioned similar projectiles is that, after all the units inside the cartridge case are fully assembled, it is impossible to perform a simple and brief test of the projectile's operation (which is necessary to prevent capacity loss of a low-capacity power supply operating in maximum current output mode for a short time (a few seconds)), because the construction of the switch contacts does not allow for a test of the switch's closure.

[0008] Information and patent searches revealed no prototype of the claimed invention. Summary of the Invention

[0009] The technical problem to be solved is to improve the manufacturability of small-caliber electric bullets while eliminating the use of high-precision manufacturing equipment, providing overall dimensions suitable for ordinary revolver cylinders and automatic pistol magazines, and enabling the operability of small-caliber electric bullets to be checked after full assembly for rejection purposes.

[0010] The technical result is to realize a small-caliber electric spring switch that solves the above-mentioned technical problems.

[0011] The specified technical result is achieved by the following method: the switch for the small-caliber stun gun is located in the rear end face of the stun gun casing and includes a printed circuit board. An SMD tactile button is mounted on one side of the printed circuit board, with one terminal of the button exposed on the other side of the printed circuit board facing the interior of the stun gun casing. A second terminal of the tactile button extends into the interior of the stun gun casing. An element capable of being plastically deformed or pressed against the button to hold it in the depressed position is mounted above the tactile button.

[0012] Another feature is that the second terminal of the touch button is inserted into the interior of the electric bullet casing via a channel along the outer surface of the electric bullet casing, inside the material, or along the inner surface of the electric bullet casing.

[0013] Another additional feature is that the second terminal of the touch button enters the interior of the electric bullet casing via an insulating channel passing through the printed circuit board. Attached Figure Description

[0014] Figure 1 An external view of an electrospring with a plastic deformation switch or a push-type switch.

[0015] Figure 2 A view of the plastic deformation switch after removing some parts of the electro-bomb.

[0016] Figure 3 A view showing the plastic deformation after removing some parts, the cartridge case, and the bullet head.

[0017] Figure 4 A circuit board view of the plastic deformation switch after removing some components, the disc-shaped power supply element, and the electric bullet casing.

[0018] Figure 5 A view of an electro-bomb with a plastic deformation switch after removing some of its components.

[0019] Figure 6 A view of the electric bullet with a push-button switch after removing some of its components. Detailed Implementation

[0020] Figure 1 : 1. Casing of the electric bullet; 2. Plastic deformation element or pushing element; 3. Protective electrode; 4. Protective ring; 5. Barbed needle.

[0021] Figure 2 : 1. Casing of the electric bullet; 2. Plastic deformation element; 3. Protective electrode; 4. Protective ring; 5. SMD tactile button; 6.

[0022] Figure 3 6. SMD tactile button; 7. Switch circuit board; 8. Conductive plated through-hole of circuit board; 9. Conductor; 10. Disc-shaped battery; 11. Discharge current generator of electro-bomb; 2. Plastic deformation element; 12. Deformation part of plastic deformation element 2.

[0023] Figure 4 : SMD tactile button 6, switch circuit board 7, conductive plated contact coating 13 connected to plated through hole 8 of board 7 and the plated through hole 8 contacting one terminal of button 6, leaf spring or disc spring 14, conductor 9, and moved disc battery 10.

[0024] Figure 5 : The cartridge case 1 of the electric bullet, the plastic deformation element 2, the protruding SMD tactile button 6, and the gap 15 between the rear end face of the cartridge case 1 and the deformable part 12 of the plastic deformation element 2.

[0025] The operation of the electric bullet with a plastic deformation element 2 to hold the SMD button in the depressed (on) position is as follows. Upon firing, the propellant gases (combustion gases from a gunpowder charge or propellant gases from a pneumatic weapon) of the projectile act on the deformable portion 12 of element 2, which is rigidly fixed to the cartridge case (e.g., by adhesive). The deformable portion 12 bends towards the cartridge case, forming a gap 15, and presses the button (or membrane) of the SMD button, thus depressing and fixing it in the bent position, and thus also fixing the button in the depressed position ("on" position). A battery consisting of elements in a set of disc-shaped batteries 10 and the electric bullet's disabling current generator 11 close the circuit, and the generator begins to generate a disabling current supplied to needle 5. A metal without elastic deformation properties, such as lead, annealed copper, and other similar materials, is selected as the plastic deformation portion. After portion 12 deforms until it stops, the entire projectile begins to move along the barrel.

[0026] Figure 6 : cartridge case 1, push element 16, rigid part 17 of push element 16, protruding SMD tactile button 6, gap 15 between the rear end face of cartridge case 1 and rigid part 17 of push element 16, gap 18.

[0027] The operation of the electric bullet with a push element 16 to hold the SMD button in the depressed (on) position is as follows. The push element 16, with a rigid portion 17, is mounted on the cartridge case in a manner that allows it to move when a certain force is applied (this is due to the guaranteed frictional force along the cartridge case 16, provided by the interference fit between the push element 16 and the cartridge case). Upon firing, the propellant gases (combustion gases from a gunpowder charge or propellant gases from a pneumatic weapon) of the projectile act on the rigid portion 17 of the push element 16. In this situation, the push element 16 begins to move forward along the barrel, overcoming a certain dynamic frictional force along the cartridge case, as the main mass of the projectile remains stationary due to static inertia. The rigid portion 17 forms a gap 18, pressing the button (or diaphragm) of the SMD button, thereby depressing it and fixing it in that position due to the guaranteed frictional force, thus also fixing the button in the depressed position (“on” position). The battery, consisting of components in a set of disc-shaped batteries 10, and the decompression current generator 11 of the bullet form a closed circuit, and the generator begins to produce a decompression current supplied to the needle 5. After the component 16 is pushed until it stops, the movement of the entire projectile along the barrel begins.

[0028] The necessity of holding the SMD tactile button in the depressed position stems from the fact that none of the SMD tactile buttons currently manufactured in the world with the required thickness (height) to be accommodated within a small-caliber spherical projectile possess a mechanism to hold it in the depressed position after being depressed. Furthermore, the size and thickness of existing SMD buttons capable of switching up to 0.6 W of electrical power correspond to the power consumption of realized spherical projectiles; for example, according to patent [2], the current consumption during operation does not exceed this value. Moreover, SMD tactile buttons are designed for thousands of switching cycles, whereas in a spherical projectile, actuation occurs only once, and even if the permissible power is exceeded, only button contact adhesion occurs, which only improves the reliability of the depressed position of the spherical projectile's decompression current generator. For example: SMD tactile button 5.2×5.2×1.5 mm, model 8-1437565-1; SMD tactile button 4×4×1.5 mm; SMD membrane tactile button 4×4×0.8 mm, 0.05 A, 12 V; membrane tactile button T3BL-05-QT / R, 3.7×3.7×0.35 mm, 0.05 A, 12 V. In this case, the switching device to be protected occupies only 8–12% of the total length of the electric bullet casing, depending on the thickness of the SMD tactile button used in the specific design.

[0029] In the accompanying drawings, the plastic deformation element and the push-fit element are shown in the form of U-shaped components, a form that structurally facilitates connection to the cartridge case without significantly compromising its strength. However, the plastic deformation element and the push-fit element can be configured in any shape to perform the function of retaining the SMD button after projectile firing. For example, they can be configured as cap-like components fitted onto the rear end face of the projectile, having a reduced diameter compared to the maximum diameter of the unrifled or un-rifled cartridge case. However, with this configuration of the plastic deformation element and the push-fit element, the wall thickness of the projectile at the rear end face will be reduced, which either reduces the mechanical strength of the cartridge case or hinders the use of a power source with a larger diameter than the standard diameter of a watch-type disc battery. Alternatively, the plastic deformation element and the push-fit element can be inserted into the flange of the rear end face instead of being fitted onto the outer surface of the reduced-diameter cartridge case; however, in this case, the longitudinal length of the switch portion within the total length of the parts (units) constituting the entire length of the cartridge case increases significantly. These additional configurations do not change the core operating principle (plastic deformation or frictional push-fit) of the element designed to hold the switch in the depressed position.

[0030] Before the protective ring 4, made of a thin film, is fixed to the rear of the projectile, the operability of both projectile constructions is checked. This protective ring protects the gap 15 from contaminants entering the button (or membrane) that prevents gap formation and presses the SMD touch button. For this purpose, the assembled projectile is connected to a measuring instrument (voltmeter or neon lamp) via a barbed needle, and an inspector performing quality control rejection inserts a wedge tool (e.g., a fine screwdriver) into the gap to press down the SMD button (or membrane) for one second to verify the presence of the disabling current. The tool is then removed from the gap to terminate the operation of the disabling current generator.

[0031] The protective electrode 3 is made of metal adhesive foil and is electrically connected to one of the contacts of the button 6 in the projectile configuration having the push element 16. It not only performs the function of protecting the projectile from being pulled out of the cartridge case by an intruder (see the embodiment of the invention, "Contact Protective Electrode No. 4," in [2] for a functional description), but also protects the gap 18 from contaminants entering the button (or membrane) that prevents the gap from forming and pressing the SMD tactile button. The protective electrode 3 can have various shapes, such as a crown-shaped shape.

[0032] Conductor 9, as shown in the accompanying drawings, extends from one of the contacts of button 6 to the disabling current generator 11 of the cartridge, passing through a channel formed therein in the material of the cartridge case 1, because the diameter of the selected power element in the illustrated embodiment (working drawing) provides a cartridge case wall thickness that allows for the formation of this channel. If the channel cannot be formed due to a thin cartridge case wall, conductor 9 can be configured, for example, as a plated trace extending along the outer or inner surface of the cartridge case 1 to the generator 11, and insulated from the surface of the disc battery 10, for example, using thin-film insulation. Conductor 9 can also pass through circuit board 7 while being insulated from its plated contact coating 13, which serves as a current collector for one pole of a battery composed of elements in a set of disc batteries 10. The force of the leaf spring or disc spring 14 can be as follows: Figure 4 The arrangement shown, or alternatively, at any other location providing a spring-loaded action to bring the disc battery into contact with the contacts of the generator 11 and the coating 13 of the circuit board 7, must be substantially greater than the force required to press the button (or membrane) actuating the tactile button 6, to avoid potentially pressing the circuit board 7 with the tactile button 6 into the cartridge 1 if the circuit board 7 is not reliably secured within the cartridge 1. When the force of the leaf spring or disc spring 14 is greater than the pressing force required to actuate the button (or membrane) of the tactile button 6, the circuit board will be pushed into place when the button 6 is actuated. The technical solution proposed in this application allows for the use of readily available and inexpensive miniature tactile buttons and printed circuit boards, ensuring manufacturability and a simple and easy-to-implement solution for holding the switch in the depressed position, and has the ability to remove the projectile after the firing part is fully assembled.

[0033] Reference List 1. Russian Federation Patent No. 2788236 2. Russian Federation Patent No. 2810936.

Claims

1. A switch for a small-caliber stun gun is located in the rear end face of the stun gun cartridge case and includes a printed circuit board on one side of the printed circuit board, an SMD tactile button being mounted thereon, one terminal of the button being exposed on the other side of the printed circuit board facing the interior of the stun gun cartridge case, a second terminal of the tactile button being inserted into the interior of the stun gun cartridge case, and an element being mounted above the tactile button that can be plastically deformed or pressed against the button to hold the button in a pressed position.

2. The switch according to claim 1, characterized in that, The second terminal of the touch button enters the interior of the electric bullet casing via a channel along the outer surface of the electric bullet casing, inside the material, or along the inner surface of the electric bullet casing.

3. The switch according to claim 1, characterized in that, The second terminal of the touch button enters the interior of the electric bullet casing via an insulating channel passing through the printed circuit board.

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