Small-calibre electric bullet switch

Abstract

A switch of a small-calibre electric bullet is located in the rear end face of the casing of an electric bullet and comprises a printed circuit board having mounted on one side thereof an SMD tact button, one terminal of which exits on the other side of the printed circuit board. A second terminal of the tact button runs into the interior of the electric bullet casing. Mounted over the tact button is an element that can be plastically deformed or thrust onto the button to hold the button in a depressed position. The technical result includes improving the manufacturability of a small-calibre electric bullet, providing overall dimensions suited to the cylinders of common revolvers and the magazines of repeating pistols, and making it possible to check the operability of a small-calibre electric bullet after complete assembly.

Description

[0001] Switch for a small-caliber electric bullet

[0002] Field of technology to which the invention relates

[0003] The invention relates to a wireless remote electric shock weapon (RESHW) of non-lethal action with an electrical means of destruction, specifically small-caliber electric bullets (electric bullets, bullets) for limiting aggressive actions of offenders, for use in special force operations in areas where civilians may be present, and for self-defense of citizens.

[0004] State of the art

[0005] The switch for a small-caliber electric bullet, as described in patent [1], is used as an analog to the switch for starting the electric bullet's shock-voltage generator upon firing, according to the proposed invention. The switch consists of a conductive membrane attached to the rim of the bullet's rear end, serving as the first electrical contact, and an electrode secured in a recess in the bullet's rear end, serving as the second electrical contact. In one embodiment, the membrane, which is sufficiently flexible, is either impaled on the electrode and deformed under the pressure of the bullet's propelling gases from the barrel, connecting the contacts and closing the circuit between the power source and the electric bullet's shock-voltage generator, activating it.In another design, under the pressure of the bullet's propelling gases, a more rigid membrane, which serves as the first electrical contact, bends, losing its initial longitudinal stability, and connects to the second contact electrode, closing the circuit between the power source and the electric bullet's shock-voltage generator, activating it. In a third design, the first contact is rigidly attached to the rear end of the bullet, and a second spring-loaded contact is located within the body of the rear end of the bullet. Between the first and second contacts is an insulating material that is removed after the bullet leaves the barrel due to centrifugal force from the bullet's rotation on this material. The second spring-loaded contact connects to the first contact, closing the circuit between the power source and the electric bullet's shock-voltage generator, activating it. The advantages of these similar switch designs are that they are functional.

[0006] The disadvantage of the first illustrated switch design is its significant longitudinal dimension (14.2%) relative to the total length of the bullet body, coupled with the extreme complexity and low-tech nature of the injected membrane. The disadvantage of the second illustrated switch design also lies in the significant longitudinal dimension of the stability switch (also 14.2%) relative to the total length of the bullet body, coupled with the difficulty of precisely producing a membrane with the required rigidity and elasticity, and the difficulty of ensuring uniformity in the properties of the membrane's metal material.

[0007] A disadvantage of the third illustrated switch design is its significant longitudinal dimension (also 14.5%) relative to the total length of the electric bullet body, due to the need for additional space within the bullet body to accommodate the spring-loaded contact. Furthermore, the third illustrated design does not allow the electric bullet to be fired from a smoothbore barrel (e.g., a lancet barrel). For a discussion of the determining role of the switch's longitudinal dimensions in electric bullet designs, see patent [2] (Implementation of the invention).

[0008] Another disadvantage of analogs is that the contact surfaces must be coated with a non-oxidizable material (for example, gold plated) to prevent oxidation during storage, which complicates and increases the cost of manufacturing technology.

[0009] Another disadvantage of similar bullets is the impossibility of a simple and short-term (to prevent the loss of capacity of a low-capacity power source operating in the maximum current output mode for a short time (seconds)) check of the bullet's operation after the complete assembly of all units in the bullet body, since the design of the switch contacts does not allow for a test closure of the switch.

[0010] The prototype of the claimed invention was not found by the information and patent search.

[0011] Disclosure of invention

[0012] The technical challenge lies in improving the manufacturing process for small-caliber electric bullets without the need for high-precision manufacturing equipment, ensuring their dimensions are suitable for placement in the cylinders of ubiquitous revolvers and multi-shot magazine pistols, and also ensuring the ability to test the performance of the small-caliber electric bullet after complete assembly of the bullet for rejection.

[0013] The technical result consists in the implementation of a switch for a small-caliber electric bullet with a solution to the specified technical problems.

[0014] The specified technical results are achieved by the fact that the switch of a small-caliber electric bullet located in the rear end of the electric bullet housing contains a printed circuit board on one side of which an SMD tact button is installed, one contact terminal of which goes to the second side of the printed circuit board facing the inside of the electric bullet housing, the second contact terminal of the tact button is brought out into the internal volume of the electric bullet housing, on top of the tact button there is installed a plastically deformable or sliding element for fixing the button in the pressed position.

[0015] An additional feature is that the second contact terminal of the tact button is brought out into the internal volume of the electric bullet body with a passage along the outer surface of the electric bullet body or a passage in the material of the electric bullet body or with a passage along the inner surface of the electric bullet body,

[0016] An additional feature is that the second contact pin of the tact button is brought out into the internal volume of the electric bullet body with an insulated passage through the printed circuit board.

[0017] Brief description of the drawings

[0018] Fig. 1. External appearance of an electric bullet with a plastic deformation switch or with a push switch.

[0019] Fig. 2. View of the plastic deformation switch with the electric bullet parts removed.

[0020] Fig. 3. View of the plastic deformation switch with removed parts, housing and electric bullet head.

[0021] Fig. 4. View of the plastic deformation switch board with removed parts, a disk power supply element and an electric bullet housing.

[0022] Fig. 5. View of an electric bullet with a plastic deformation switch with the electric bullet parts removed.

[0023] Fig. 6. View of the electric bullet with the advance switch with the electric bullet parts removed.

[0024] Implementation of the invention

[0025] Fig. 1. Body 1 of an electric bullet, element 2 of plastic deformation or pushing element, protective electrode 3, protective ring 4, needles 5 with barbs.

[0026] Fig. 2. Body 1 of electric bullet, element 2 of plastic deformation, protective electrode 3, protective ring 4, button 6 tact SMD.

[0027] Fig. 3. SMD tact button 6, switch board 7, conductive metallized hole 8 of the board, conductor 9, disk electric battery 10, generator 11 of electric bullet striking voltage, plastic deformation element 2, deformable part 12 of plastic deformation element 2. Fig. 4. SMD tact button 6, switch board 7, conductive metallized contact coating 13 of board 7 connected to metallized hole 8 of the board in contact with one of the contact terminals of button 6, plate or disc spring 14, conductor 9, disk electric battery 10 extended to the side.

[0028] Fig. 5. Housing 1 of the electric bullet, element 2 of plastic deformation, protruding button 6 tact SMD, gap 15 between the rear end of the housing 1 and the deformable part 12 of the element 2 of plastic deformation.

[0029] The operation of the electric bullet with a switch having an element 2 for plastic deformation of the SMD button fixation in the pressed (on) state occurs as follows. When fired, the bullet's propellant gases (combustion gases of the propellant powder or propellant gases of the pneumatic weapon) act on the deformable part 12 of element 2, which is rigidly attached to the bullet body (e.g., by gluing). The deformable part 12 bends toward the bullet body, selecting the gap 15 and pressing the button (or membrane) of the SMD button, pressing it and locking in the curved position, thus locking the button in the pressed (on) position. The battery of elements from the set of disk batteries 10 and the generator 11 of the electric bullet's striking voltage closes, and the generator begins to generate striking voltage of electric current, which is supplied to the needles 5. Metals, such as lead, annealed copper, and other similar materials without elastic deformation properties, are selected as the plastically deformable part.After part 12 has been deformed to the stop, the entire bullet begins to move along the barrel.

[0030] Fig. 6. Housing 1 of the electric bullet, pushing element 16, rigid part 17 of pushing element 16, protruding button 6 tact SMD, gap 15 between the rear end of housing 1 and rigid part 17 of pushing element 16, gap 18

[0031] The operation of an electric bullet with a switch having a pushing element 16 for fixing the SMD button in the pressed (on) state occurs as follows. The pushing element 16 with a rigid part 17 is fixed to the bullet body with the ability to move upon the application of a certain force (due to the guaranteed frictional force of the pushing element 16 on the body 1 of the bullet (the fit of the pushing element 16 on the bullet body with a slight tension). When fired, the gases of the bullet propelling (the combustion gases of the powder charge or the propelling gases of the pneumatic weapon) act on the rigid part 17 of the pushing element 16. In this case, the pushing element 16 begins to move forward along the barrel, overcoming a certain frictional force of movement along the bullet body, since the main mass of the bullet is still motionless due to the inertia of rest.By selecting gap 18, rigid part 17 presses the button (or membrane) of the SMD button, pressing it and locking it in place due to the guaranteed friction force, thus locking the button in the depressed (on) position. The battery of elements from the set of disk batteries 10 and the generator 11 of the electric bullet's striking voltage closes, and the generator begins to generate striking voltage, which is supplied to the needles 5. After element 16 is pushed all the way down, the entire bullet begins to move down the barrel.

[0032] The need for a locking mechanism in the on state of the SMD tact button is due to the fact that none of the models of SMD tact buttons produced worldwide with the thickness (height) required for placement in small-caliber stun guns have a mechanism for locking in the on state after being pressed. Moreover, the dimensions and thickness of the produced SMD buttons with the ability to switch electric currents up to 0.6 W correspond to the power consumption of already sold stun guns; for example, according to patent [2], the electric current consumption during operation does not exceed this value. Moreover, SMD tact buttons are designed for thousands of switching cycles, while in an stun gun, actuation occurs only once, and even if the permissible electric current power is exceeded, only sticking of the button contacts will occur, which only increases the reliability of the locked on state of the stun voltage generator of the stun gun. For example, the SMD tact button 5, 2x5, 2x1, 5 mm. mod.8-1437565-1; SMD tact button 4x4x1.5 mm.; SMD membrane tact button 4x4x0.8 mm. - 0.05 A; 12 V.; membrane tact button T3BL-05-QT / R, 3.7x3.7x 0.35 mm -0.05 A; 12 V. At the same time, the declared switch devices take up only 8-12% of the total length of the electric bullet body, depending on the thickness used in a particular design of the SMD tact button.

[0033] In the figures, the plastically deformable and sliding element is depicted as a U-shaped component structurally convenient for attachment to the bullet body without significantly weakening its strength. However, the plastically deformable and sliding element could be designed in any form that fulfills the described functions of securing the SMD button after firing the bullet, for example, as a cap placed on the rear end of a bullet with a diameter reduced compared to the largest diameter of the bullet body without rifling or a band leading along the rifling. However, with this design of the plastically deformable or sliding element, the bullet wall thickness at the rear end will be reduced, which either reduces the mechanical strength of the body or precludes the use of a power source with a larger diameter than the standard diameter of a watch-type disc battery.It is also possible to design a plastically deformable or sliding element that fits not onto the outer surface of the reduced-diameter housing, but is inserted into the flange of the rear end of the housing. However, in this case, the longitudinal length of the switch portion of the overall length of the parts (assemblies) that make up the full length of the bullet housing significantly increases. These additional designs do not alter the basic operating principle of the switch locking element in the depressed position (plastic deformation or sliding with friction).

[0034] The functionality of both bullet designs is checked before attaching the protective ring 4 made of thin film to the back of the bullet, protecting gap 15 from contamination that could interfere with the gap selection and pressing the SMD tact switch button (or membrane). To do this, the assembled bullet is attached with barbed needles to a measuring device (voltmeter or neon lamp) that indicates the operation of the shock voltage generator. The person performing the inspection inserts a wedge-shaped tool (e.g., a thin screwdriver) into the gap, presses the SMD button (or membrane) for a second, verifying the presence of shock voltage. The tool is then removed from the gap, and the shock voltage generator operation is stopped.

[0035] The protective electrode 3, made of metallic adhesive foil and galvanically connected to one of the contacts of the button 6 in the design of the bullet with the pushing element 16, performs not only the function of protecting the bullet from being removed from the body by the offender (for a description of the function, see [2] Embodiment of the invention, "contact-protective electrode pos. 4"), but also protects the gap 18 from contamination that could interfere with the selection of the gap and pressing the button (or membrane) of the SMD tact button. The protective electrode 3 may have various shapes, for example, a crown.

[0036] The conductor 9 leading from one of the contacts of the button 6 to the generator 11 of the electric bullet's striking voltage in the figures shown passes through the material of the housing 1 in a channel formed therein, since the selected diameters of the power supply elements in the embodiments shown (working drawings) have a housing wall thickness that allows for the creation of a channel. If it is impossible to create a channel due to the thin wall of the housing, the conductor 9 can be made, for example, in the form of a metallized track passing to the generator 11 along the outer surface of the housing 1 or along its inner surface with, for example, thin-film insulation from the surfaces of the disk electric batteries 10. The conductor 9 can also pass through the board 7 with its insulation from the metallized contact coating 13 of the board, which is the current collector of one of the poles of the battery of elements from the set of disk electric batteries 10. The force of the plate or disc spring 14, which can be placed as shown in Fig.4 but also in any other place providing a spring-loaded action to achieve contact of the battery of disk elements with the contact of the generator 11 and the covering 13 of the board 7 there should be preferably more than the force necessary to press in to turn on the button (or membrane) of the tact button 6 in order to avoid possible pressing of the board 7 from the tact button 6 inside the housing 1 if the board 7 is not securely fastened in the housing 1. When the force of the plate or disc spring 14 is more than the pressing force to turn on the button (or membrane) of the tact button 6, the board will be moved into place with the turning on of the button 6. The technical solution presented in the application allows the use of ready-made and inexpensive microtact buttons, printed circuit boards, manufacturability of production, a simple-to-implement solution for fixing the switch in the pressed state with the possibility of rejecting bullets after the complete assembly of the striking part.

[0037] List of cited sources

[0038] 1. Russian Federation Patent No. 2788236

[0039] 2. Russian Patent No. 2810936

Claims

Invention formula 1. A switch for a small-caliber electric bullet, located in the rear end of the electric bullet housing, containing a printed circuit board, on one side of which an SMD tact button is installed, one contact terminal of which goes to the second side of the printed circuit board, facing the inside of the electric bullet housing volume, the second contact terminal of the tact button is brought out into the internal volume of the electric bullet housing, on top of the tact button there is installed an element that is plastically deformable or slides onto the button for fixing the button in the pressed position.

2. The switch according to paragraph 1, characterized in that the second contact terminal of the tact button is brought out into the internal volume of the electric bullet housing with a passage along the outer surface of the electric bullet housing or a passage in the material of the electric bullet housing, or with a passage along the inner surface of the electric bullet housing.

3. The switch according to paragraph 1, characterized in that the second contact terminal of the tact button is brought out into the internal volume of the electric bullet housing with an insulated passage through the printed circuit board.

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