Electronic suicide fuse structure

Abstract

The present invention relates to an electronic suicide fuse structure that can prevent the occurrence of unexploded ordnance by dismantling a safety device by a setback and centrifugal force of a predetermined level after firing a 40mm grenade, ensuring safety, and exploding when an impact of a predetermined level or more is applied, and also by self-destructing after a predetermined time has passed if the impact does not reach the predetermined level and an explosion does not occur.

Description

[Technical field]

[0001] The present invention relates to a suicide fuse structure, and more particularly to an electronic suicide fuse structure that, after firing a 40mm grenade, dismantles the safety device by a setback of a predetermined level and centrifugal force, ensuring safety, and explodes when an impact of a predetermined level or more is applied while ensuring safety, and also, if the impact does not reach the predetermined level and an explosion does not occur, it can self-destruct after a predetermined time has passed, thereby preventing the occurrence of unexploded ordnance. [Background technology]

[0002] The 40mm grenade is a type of military weapon that can be fired using a grenade launcher to kill or injure people or destroy light armored vehicles and positions. It was developed in the United States during the Vietnam War and used in actual combat. Since then, its usefulness has been widely recognized and it is now used in many countries.

[0003] However, if the fuse activation conditions are not met, a certain percentage of unexploded ordnance will be produced. Such unexploded ordnance not only reduces the efficiency of the ammunition, but can also cause a lot of damage, including injury to our troops, civilians, and even to the individual himself, so it is very important to properly dispose of unexploded ordnance.

[0004] In other words, while grenades are launched normally, many grenades have been used that use a mechanical mechanism that detonates when subjected to certain conditions such as impact.

[0005] However, the conventional mechanical fuse detonation method is not only structurally complicated, but also has problems with operational reliability, resulting in many unexploded ordnances. In recent years, efforts have been made to solve the problem of unexploded ordnance by developing electronic self-destruct fuses that use spare batteries that are activated by impact.

[0006] In particular, there is the problem of duds occurring when a bomb falls into grass or mud and the impact is weak. In addition, in order to protect the launcher and friendly forces, it is generally necessary to have a safety device that prevents the bomb from exploding within a safe distance after firing. Since there are two aspects to this safety function, namely the smooth operation of the fuse and the need for self-destruction, there is a demand for reliability that allows these safety and explosion and self-destruct functions to be smoothly realized. Summary of the Invention [Problem to be solved by the invention]

[0007] The present invention has been created to solve the above problems, and an object of the present invention is to provide an electronic suicide fuse structure that prevents a fired grenade from exploding before it departs from a safe distance and explodes only under set conditions, thereby improving the safety of the grenade and preventing the occurrence of unexploded grenades. [Means for solving the problem]

[0008] In order to achieve the above-mentioned object, the present invention provides a lower plate structure having a first guide hole penetrating vertically and a first pin inserted into the first guide hole and moving; a first through hole located on the lower side of the lower plate structure and corresponding to the position of the first pin, in which a spare battery is mounted and activated by the impact of the first pin, a second through hole crossing a first conductor capable of detecting a short circuit, a third through hole formed with a second conductor capable of detecting a short circuit, and a board module having an electric detonator attached to its lower part, which outputs an electric detonation signal in response to the short circuit of the second conductor and detonates in response to the output; a centrifugal pendulum located on the lower side of the board module and moving outward from the center due to centrifugal force to short-circuit the first conductor, an impact pendulum rising and falling due to inertia when a bullet impacts a target and short-circuiting the second conductor, and a first detonator hole formed so that the electric detonator is close to a spitback.

[0009] In this case, it is preferable that the lower plate structure further includes a second guide hole penetrating vertically and a second pin inserted into the second guide hole and moving, the substrate module further includes a fourth through hole through which the second pin passes, and the first safety structure further includes a fixing member that temporarily fixes a centrifugal pendulum provided on the first safety structure between the first safety structure and the substrate module and is released by applying pressure to the second pin.

[0010] It is also preferable that the device further includes a second safety structure having a second detonator hole located below the first safety structure and formed so that the explosive force of the electric detonator is transmitted to a lower spitback, and an opening / closing part that is opened by centrifugal force while the second detonator hole is shielded.

[0011] In addition, the opening / closing part is installed in a stacked form between the second detonator hole and the electric detonator, and controls the opening and closing of the second detonator hole, which is a passage for transmitting the explosive pressure caused by the detonation of the electric detonator to the spit bag, which is a booster explosive, and is composed of a semicircular rotor that rotates by centrifugal force around a rotation axis formed eccentrically away from the center of the bullet on the side of the second detonator hole and has a through part formed to open the second detonator hole, and further includes a support protrusion attached to the first safety structure and protruding below the centrifugal pendulum, and a fifth through hole formed so that the support protrusion moves in a state of penetrating downward, and it is preferable that the support protrusion moves by centrifugal force while the rotor is fixed so as not to move, allowing the rotor to rotate.

[0012] It is also preferable that a gear is formed on the outer peripheral surface of the rotor centered on the rotation axis, a weight is formed between the gear and the rotation axis, and a conversion gear part that rotates in mesh with the gear of the rotor on the upper side to reduce the rotational speed of the rotor, and a reduction part that contacts the conversion gear part to reduce the rotational speed of the conversion gear are installed.

[0013] It is also preferable that the device further includes a cap-shaped upper plate structure that is coupled to cover the lower plate structure from above and has first and second accommodating grooves that accommodate upper ends of the first and second pins, respectively.

[0014] In addition, the board module is preferably configured such that the second conductive wire extends along the outer periphery, so that when the board module is damaged, an effect similar to a short circuit of the second conductive wire occurs.

[0015] In addition, the first and second conductive wires are preferably thin conductive wires that can conduct electricity well and are formed by wire bonding or wedge bonding.

[0016] It is also preferable that the first pin and the second pin are each mounted on a tongue spring.

[0017] In addition, it is preferable that the bottom surfaces of electrodes formed on the upper portion of the reserve battery and protruding to the left and right are electrically connected to the substrate module.

[0018] In addition, it is preferable that the centrifugal pendulum is provided with a fixing member for preventing the pendulum from moving to a fixed position, a short-circuiting protrusion for cutting the first conducting wire, a fixing protrusion for clamping the impact pendulum, and a support protrusion for clamping the rotation of the rotor. Effect of the Invention

[0019] According to the present invention, the self-destruct function can greatly reduce the rate of unexploded shells, and can greatly reduce damage to our troops and especially to civilians.

[0020] Furthermore, according to the present invention, after firing, the safety device is dismantled by setback and centrifugal force, ensuring the safety of the firer and our troops, and after the safety device is dismantled, it operates sensitively to speed changes, etc., so it can explode sufficiently even with small impacts in environments such as eyes and mud, and when a misfire occurs, the electronic circuit on the board causes it to self-destruct, ensuring safety and improving the efficiency of the bullet. [Brief description of the drawings]

[0021] [Figure 1] FIG. 2 is an exploded perspective view showing the exploded state of the suicide fuse structure according to the present invention. [Diagram 2] 11 is a cross-sectional view showing a state in which a first pin attacks a spare battery. FIG. [Diagram 3] FIG. 13 is a perspective view showing a state in which the second pin attacks the connection portion between the fixed member and the centrifugal pendulum. [Figure 4] Fig. 4(a) is a plan view showing the state where the centrifugal pendulum separated from the fixed member according to Fig. 3 is pushed outward by the rotational force of the spring, releasing the clamping of the impact pendulum. Fig. 4(b) is a plan view showing the state where the centrifugal pendulum separated from the fixed member according to Fig. 3 is pushed outward by the rotational force of the spring, releasing the clamping of the impact pendulum. Fig. 4(c) is a cross-sectional view showing the state where the centrifugal pendulum separated from the fixed member according to Fig. 3 is pushed outward by the rotational force of the spring, releasing the clamping of the impact pendulum. Fig. 4(d) is a cross-sectional view showing the state where the centrifugal pendulum separated from the fixed member according to Fig. 3 is pushed outward by the rotational force of the spring, releasing the clamping of the impact pendulum. [Diagram 5] Fig. 5(a) is an operational state diagram in which the centrifugal pendulum separated from the fixed member according to Fig. 3 is pushed outward by the rotational force of the bullet, short-circuiting the first conducting wire. Fig. 5(b) is an operational state diagram in which the centrifugal pendulum separated from the fixed member according to Fig. 3 is pushed outward by the rotational force of the bullet, short-circuiting the first conducting wire. Fig. 5(c) is an operational state diagram in which the impact pendulum released from the clamp according to Fig. 4 advances due to a speed change caused by the impact of the bullet, short-circuiting the second conducting wire. [Figure 6]FIG. 4 is a plan view showing the operating state of the opening and closing part as one of the two centrifugal pendulums separated from the fixed member in FIG. 3 has a protrusion formed on the bottom that clamps the rotation of the lower rotor, and then is pushed outward by the rotational force of the bullet to release the clamping of the rotor, and the suicide fuse structure according to the present invention rotates. [Figure 7] FIG. 13 is a perspective view showing a state of a substrate module according to another embodiment of the present invention; [Figure 8] 11 is a state diagram showing a state in which an opening / closing unit according to another embodiment of the present invention is coupled to a base plate. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0022] The suicide fuse structure according to the present invention will be described in detail below with reference to the accompanying drawings.

[0023] FIG. 1 is an exploded perspective view showing the disassembled state of the self-destruct fuse structure according to the present invention, FIG. 3 is a perspective view showing the state where the second pin attacks the connection part of the fixed member and the centrifugal pendulum, FIG. 4(a) and FIG. 4(b) are plan views showing the state where the centrifugal pendulum separated from the fixed member according to FIG. 3 is pushed outward by the rotational force of the bullet to release the clamping of the impact pendulum, and FIG. 4(c) and FIG. 4(d) are plan views showing the state where the centrifugal pendulum separated from the fixed member according to FIG. 3 is pushed outward by the rotational force of the bullet to release the clamping of the impact pendulum. FIG. 5 is a cross-sectional view showing the state where the centrifugal pendulum pushed outward in FIG. 4 short-circuits the first conductor, and at the same time, the protrusion controlling the impulse pendulum releases the clamping of the impulse pendulum, and as a result, the second conductor of the unclamped impulse pendulum is short-circuited due to the speed change caused by the collision of the bullet. FIG. 5(a) shows the state before the first conductor is short-circuited, and FIG. 5(b) shows the state where the centrifugal pendulum pushed outward in FIG. 4 short-circuits the first conductor. FIG. 5(c) shows the state where the unclamped impulse pendulum is short-circuited due to the speed change caused by the collision of the bullet. FIG. 6 is a plan view showing the operating state of the opening and closing part as one of the two centrifugal pendulums separated from the fixed member in FIG. 3 clamps the rotation of the lower rotor, and then releases the clamping of the rotor by being pushed outward by the rotational force of the bullet, and the self-destruct fuse structure according to the present invention rotates.

[0024] As shown in FIG. 1, the suicide fuse structure according to the present invention is broadly composed of an upper plate structure 50, a lower plate structure 10, a base module 20, a first safety structure 30 and a second safety structure 40.

[0025] The upper plate structure 50 is configured to be located on the upper part of the lower plate structure 10, and has a first receiving groove 51 formed therein and a second receiving groove 52 formed at a position separated from the first receiving groove 51.

[0026] The first receiving groove 51 and the second receiving groove 52 receive the first pin 11a and the second pin 12a described below and serve to guide the vertical movement of the first pin 11a and the second pin 12a. At this time, for stable operation, the first pin 11a and the second pin 12a are provided in pairs, and correspondingly, the first receiving groove 51 and the second receiving groove 52 are also formed in pairs symmetrically with respect to the center.

[0027] The lower plate structure 10 is configured to be attached to the underside of the upper plate structure 50, and a plurality of first connecting protrusions 53 are formed in a circumferential direction on the underside of the upper plate structure 50, and correspondingly, a first connecting groove 13 that engages with the first connecting protrusions 53 is formed in a circumferential direction on the upper side of the lower plate structure 10, thereby achieving stable connection at an accurate position.

[0028] The lower plate structure 10 is formed with a first guide hole 11 and a second guide hole 12, which correspond to the positions of the first accommodating groove 51 and the second accommodating groove 52, respectively, of the upper plate structure 50, which is joined to the upper side, and a structure is provided through which the first pin 11a and the second pin 12a, respectively, can pass and move up and down.

[0029] At this time, the first pin 11a is set to be placed on the upper end of the first guide hole 11, and the second pin 12a is set to be placed on the upper end of the second guide hole 12. A first tongue spring 11b, which is an inertia spring, is provided in the middle part of the first guide hole 11, and the first pin 11a is placed on the first tongue spring 11b. Similarly, a second tongue spring 12b, which is an inertia spring, is provided in the middle part of the second guide hole 12, and the second pin 12a is initially set to be placed on the second tongue spring 12b.

[0030] The first tongue spring 11b and the second tongue spring 12b are configured to prevent the first pin 11a and the second pin 12a from moving arbitrarily along the first guide hole 11 and the second guide hole 12, respectively, due to a small impact or external force, and function to allow the first pin 11a and the second pin 12a to move downward along the first guide hole 11 and the second guide hole 12, respectively, when a force greater than a predetermined force due to setback is applied when a grenade is fired.

[0031] The substrate module 20 is a circuit board, such as a PCB, that is attached to the underside of the lower plate structure 10. For secure attachment at an accurate position, a plurality of second attachment protrusions 14 are formed on the underside of the lower plate structure 10 along a circumferential direction, and second attachment grooves 20a that engage with the second attachment protrusions 14 are formed on the upper side of the substrate module 20.

[0032] The substrate module 20 is formed with a first through hole 22 for installing a spare battery 21 corresponding to the position of the first pin 11a, a second through hole 23 through which the first conductive wire 23a crosses, a third through hole 24 through which the second conductive wire 24a crosses, and a fourth through hole 26 corresponding to the position of the second pin 12a and having a size that allows the end of the second pin 12a to pass through.

[0033] The spare battery 21 is a battery for supplying power, and is normally in an inactive state in which no power is supplied. When an impact is applied to the first pin 11a on the upper side, the spare battery 21 is activated to supply power.

[0034] At this time, by positioning the spare battery 21 between the first through holes 22 and not on the upper side of the board module 20, a sufficient stroke space can be secured between the spare battery 21 and the first pin 11a, and the first pin 11a can be accelerated through the secured space, thereby strongly attacking the spare battery 21.

[0035] FIG. 2 is a cross-sectional view showing a state in which the first pin attacks the spare battery 21. As shown in FIG.

[0036] Such a reserve battery 21 is a battery that generates electricity when activated by an external impact, and the bottom surfaces of the electrodes protruding to the left and right formed on the top of the reserve battery 21 are electrically connected to the substrate module 20. Since various products including those disclosed in Korean Patent Registration No. 10-1445616 owned by the applicant can be applied, detailed description of the reserve battery 21 will be omitted to avoid obscuring the gist of the present invention.

[0037] As described above, the first pins 11a and the second pins 12a are each a pair. Due to the symmetrical configuration, the first through hole 22, the second through hole 23, the third through hole 24, and the fourth through hole 26 provided in the substrate module 20 are also configured symmetrically in pairs.

[0038] An electric detonator 25 is installed under the board module 20 and is designed to explode in response to an electric signal via a short circuit of the second conductive wire 24a.

[0039] The first safety structure 30 is configured to be installed under the board module 20, and similarly, in order to enable a firm connection at an accurate position, the second connecting protrusion 14 protruding from the lower side of the lower plate structure 10 is supported through the second connecting groove 20a formed in the board module 20, and is connected in a form that receives the third connecting groove 30a of the first safety structure 30 in a protruding downward state.

[0040] In the first safety structure 30, a centrifugal pendulum 31 is disposed corresponding to the position of the second through hole 23, and an impact pendulum 32 is disposed corresponding to the position of the third through hole 24. In addition, a first detonator hole 33 is formed in the center of the first safety structure 30 so that the electric detonator 25 can pass through and approach the spitback 73 below.

[0041] For the arrangement of the centrifugal pendulum 31 and the impact pendulum 32, the first safety structure 30 is provided with a centrifugal pendulum accommodating groove 34 and an impact pendulum accommodating groove 35 for accommodating the centrifugal pendulum 31 and the impact pendulum 32, respectively, and the centrifugal pendulum accommodating groove 34 has a size that allows the centrifugal pendulum 31 to move from the center outwardly within a predetermined range by centrifugal force.

[0042] In addition, a spare battery receiving groove 36 is further provided to receive the lower part of the spare battery 21 mounted in the first through hole 22 formed in the circuit board 20 .

[0043] A fixing member 31a is installed on the outside of the centrifugal pendulum 31 to temporarily fix the initial centrifugal pendulum 31 so that it does not move, and a V-shaped groove is formed at the connection portion between the centrifugal pendulum 31 and the fixing member 31a in a relatively easy manner, so that the fixing member 31a and the centrifugal pendulum 31 can be separated from each other by the impact applied by the second pin 12a moving through the fourth through hole 26.

[0044] In addition, the centrifugal pendulum 31 has a fixing protrusion 31b for fixing the adjacent impact pendulum 32 at the initial position so that it does not protrude upward arbitrarily, and a short-circuiting protrusion 31c for protruding through the second through-hole 23 at the upper end to cut the first conductive wire 23a.

[0045] At this time, for stable operation, the spare battery 36, the centrifugal pendulum 31, the impact pendulum 32, the second through hole 23 and the third through hole 24 are provided in pairs, and the pairs are formed symmetrically around the center. In addition, the protrusion 31d at the lower end of the centrifugal pendulum 31, which is installed so that the spring 38 is compressed by centrifugal force, restricts the rotation of the rotor 43 of the second safety structure 40, and when it is pushed toward the circumferential side by the rotation of the bullet, it releases the restriction of the rotor 43 attached to the second safety structure 40. Also, when the rotation of the next bullet stops after the rotor 43 has moved, it prevents the rotor 43 from returning due to the restoring force of the compressed spring 38.

[0046] The second safety structure 40 is connected to the underside of the first safety structure 30, and a plurality of third connecting protrusions 30b are formed along the circumference on the underside of the first safety structure 30, and a fourth connecting groove 40a that engages with the third connecting protrusions 30b is formed on the upper side of the second safety structure 40, thereby providing a firm connecting structure in a fixed position.

[0047] A spitback 73 is located under the second safety structure 40, and a second detonator hole 41 is formed so that the electric detonator 25 can easily ignite the spitback 73. In particular, an opening / closing part 42 is provided as a safety device, which closes the second detonator hole 41 initially and opens the second detonator hole 41 under an explosion condition. In addition, a plurality of fourth coupling protrusions 49 are formed along the circumference on the underside of the second safety structure 40 so that the second safety structure 40 can rotate together with the rotation of the bullet, and the second safety structure 40 is coupled to the fuse part base plate 70 of the bullet through a fifth coupling groove 71 that engages with the fourth coupling protrusions 49.

[0048] A spitback receiving groove 72 is formed in the base plate 70 located below the second safety structure 40, a spitback 73 is located in the spitback receiving groove 72, and a second detonator hole 41 is formed below the second safety structure 40 so that the electric detonator 25 can be brought close to the spitback 73 and ignite. In particular, an opening / closing part 42 is provided as a safety device, which closes the second detonator hole 41 initially and opens the second detonator hole 41 under an explosion condition.

[0049] The opening / closing part 42 is configured to open and close by centrifugal force in consideration of the firing characteristics of the grenade. For this purpose, a rotor 43 having an area larger than the second detonator hole 41 is installed on the side of the central second detonator hole 41 through an eccentric pivot shaft 42a.

[0050] At this time, the rotor 43, which can rotate laterally through the rotating shaft 42a, is formed with a through-hole 43a that can open the second detonator hole 41 when rotating. That is, the rotor 43 initially blocks the second detonator hole 41 and the electric detonator 25, and when the bullet rotates, it rotates around the rotating shaft 42a by eccentric centrifugal force, and the through-hole 43a is aligned with the position of the second detonator hole 41, and the spitback 73 is aligned with the electric detonator 25, so that mechanical arming is performed so that a flame can be transmitted.

[0051] For this operation, the rotor 43 is formed so that the opening and closing side part having a large area around the rotation shaft 42a can cover the second detonator hole 41, and the outer circumferential surface of the opening and closing side part of the rotor 43 has an arc centered on the rotation shaft 42a, and a gear 43b that meshes with a first gear 45a described below is formed. In addition, a relatively heavy weight part 43c is formed on the rotation side, which is the part opposite the through part 43a with respect to the rotation shaft 42a, so that the rotation of the rotor 43 by centrifugal force becomes smooth.

[0052] The rotor 43 is a safety device to prevent an explosion within a safe distance at the beginning of launch, so it is fixed to block the initial movement and mechanically arms after the bullet flies a safe distance.

[0053] For this purpose, one of the centrifugal pendulums 31 of the first safety structure 30 is used, and a support protrusion 31d is formed on the underside of the selected centrifugal pendulum 31, which protrudes downward from the first safety structure 30 and contacts the rotor 43 to prevent rotation. Correspondingly, a fifth through hole 37 is formed in the first safety structure 30 so that the support protrusion 31d can move while penetrating downward.

[0054] That is, in the initial position of the centrifugal pendulum 31, the support protrusion 31d holds the rotor 43 fixed so that the rotor 43 does not move, and the centrifugal pendulum 31 moves outward due to centrifugal force, so that it can rotate away from the rotor 43.

[0055] At this time, the rotor 43 is formed with a protrusion that contacts the centrifugal pendulum 31 at the initial position, and a spring 38 for pushing the centrifugal pendulum 31 from the center can be formed on the outside of the centrifugal pendulum 31 that serves to support the rotor 43.

[0056] At this time, in order to prevent the rotor 43 from opening and closing too quickly and arming a bullet within a safe range, a speed adjusting part 46 for appropriately reducing the rotation speed is installed on the side of the rotor 43. The speed adjusting part 46 has a gear 43b formed on the outer circumferential surface around the rotation axis of the rotor 43, a weight part 43c formed on the opposite side of the gear, and is preferably equipped with a conversion gear part 45 that rotates by meshing with the gear 43b of the rotor 43 on the upper side to reduce the rotation speed of the rotor 43, and a reduction part that contacts the conversion gear part 45 to reduce the rotation speed of the conversion gear part 35.

[0057] In this embodiment of the present invention, a spitback 73 is positioned in a spitback accommodating groove 72 of a base plate 70 located at the bottom of the second safety structure 40, and the spitback 73 is detonated by igniting the upper electric detonator 25 when the second detonator hole 41 is opened.

[0058] FIG. 8 is a state diagram showing a state where an opening / closing part according to another embodiment of the present invention is connected to a base plate. The above-mentioned structure may be modified so that when the rotor 43 moves by centrifugal force, a connected explosive 48 is installed between the electric detonator and the spitback at the through-hole 43a that can be linearly connected to the second detonator hole 41, and then detonated while overlapping the electric detonator 25, so that the explosion pressure passes through the second detonator hole 25 to ignite the spitback 73 installed under the second safety structure 40.

[0059] Next, the operating process of the suicide fuse structure having the above-mentioned configuration is as follows.

[0060] First, when a grenade is fired, as shown in FIG. 2, a strong setback acting as the firing propulsion of the grenade pushes against the force of the first tongue spring 11b supported by the first pin 11a, and moves along the first guide hole 11, striking the spare battery 21, which activates the spare battery 21 to generate electricity and supply power to the board module 20.

[0061] Also, as shown in Figs. 3 and 4, when a grenade is fired, the second pin 12a, together with the first pin 11a, is set back and released from the support of the second tang spring 12b, moves along the second guide hole 12, penetrates the fourth through hole 26, and attacks the centrifugal pendulum 31 and the fixed member 31a, separating the centrifugal pendulum 31 from the fixed member 31a and making it movable.

[0062] Then, as shown in FIG. 5, the centrifugal pendulum 31 is pushed outward along the centrifugal pendulum receiving groove 34 while overcoming the action force of the spring 38 attached on the outside, and as the centrifugal pendulum 31 moves outward, the short-circuiting protrusion 31c formed on the centrifugal pendulum 31 shorts the first conductive wire 23a, and the safety is released, and the electric detonator 25 is prepared for detonation.

[0063] In addition, when the fixing protrusion 31b formed on the opposite side of the centrifugal pendulum fixing member 31a releases the clamping of the impact pendulum 32, the second conductive wire 24a is short-circuited at the time of the impact of the bullet, detonating the electric detonator 25. At this time, the circuit is electronically controlled so that the bullet is armed after it leaves a safe distance.

[0064] The operating principle of the opening / closing unit 42 provided in the second safety structure 40 is as follows.

[0065] As shown in FIG. 6, as the centrifugal pendulum 31 moves due to the centrifugal force generated during the propulsion of the grenade, the support protrusion 31d formed on the underside of the centrifugal pendulum 31 to prevent the rotor 43 from rotating moves along the fifth through hole 37 and separates from the rotor 43, so that the rotor 43 is released from the fixed state and the opening and closing side having a large area rotates outwardly due to the centrifugal force around the pivot shaft 42a.

[0066] At this time, the gear 43b formed on the outer circumferential surface of the opening / closing side of the rotor 43 meshes with the conversion gear part 45 having the first gear part 45a and the second gear part 45b formed thereon, thereby reducing the rotation speed of the rotor 43. The second detonator hole 41 is opened in a state where the rotation speed of the rotor 43 is appropriately adjusted by the conversion gear part 45 and the reduction part which contacts it to reduce the rotation speed of the conversion gear part 45, and the electric detonator 25 can detonate the spitback 73 formed on the lower side.

[0067] In this way, the speed regulator 46 reduces the opening speed of the rotor 43, thereby preventing the second detonator hole 41 from opening within a safe distance of the grenade and detonating the spitback 73.

[0068] In addition, when the grenade hits the target, the impact pendulum 32 passes through the third through hole 24 and protrudes upward due to inertia, cutting the second conductive wire 24a attached to the third through hole 24 and causing a short circuit.

[0069] At this time, when the current generated by the short circuit of the second conductor 24a is applied to the electric detonator 25 and the electric detonator 25 detonates, the spitback 73 is ignited, and then the booster in the body of the grenade ignites, causing the main explosive to explode, thereby causing the grenade to explode.

[0070] In addition, in order to prepare for a situation in which the grenade fails to detonate because the impact pendulum 32 is unable to cut the second conductive wire 24a even when an impact is applied to the grenade, it is preferable that an additional electronic switch is provided on the board module 20 so that the grenade self-destructs after a time period intended by the designer has elapsed, thereby cutting off the ability to kill the grenade.

[0071] In this way, basically, the electric detonator 25 can be operated by the second conductive wire 24a being cut by the impact pendulum 32, but depending on the impact angle of the grenade, the upper plate structure 50, the lower plate structure 10 and the board module 20 may be damaged or deformed, and the impact pendulum 32 may not be able to cut the second conductive wire 24a.

[0072] FIG. 7 is an oblique view showing the state of a board module according to another embodiment of the present invention, in which the installation range of the second conductive wire 24a is extended outside the third through hole 24, thereby enabling damage to the board module 20 mentioned above to be immediately detected.

[0073] In other words, by configuring the second conductive wire 24a' to surround the outer periphery of the board module 20, if damage to the board occurs at various impact angles, the second conductive wire 24a' will be cut, and the electric detonator 25 will be activated, thereby preventing the occurrence of a dud due to damage to the bullet.

Claims

1. a lower plate structure including a first guide hole penetrating vertically and a first pin inserted into the first guide hole and movable; a substrate module located under the lower plate structure, the substrate module having a first through hole located corresponding to the position of the first pin and receiving a reserve battery activated by striking the first pin, a second through hole provided in a manner in which a first conductor capable of detecting a short circuit is crossed, a third through hole provided in a manner in which a second conductor capable of detecting a short circuit is crossed, and an electric detonator attached to a lower portion thereof for outputting an electric detonation signal in response to a short circuit of the second conductor and detonating in response to the output; and an impact pendulum that moves up and down by inertia to short-circuit the second conductor and detonate the electric detonator; and a first detonator hole formed so that the electric detonator is adjacent to a spitback.

2. The lower plate structure further includes a second guide hole penetrating vertically, and a second pin inserted into the second guide hole and movable, the substrate module further includes a fourth through hole through which the second pin passes; 2. The electronic suicide fuse structure according to claim 1, wherein the first safety structure further includes a fixing member that fixes the centrifugal pendulum and is released through pressure applied to the second pin by a setback generated when the centrifugal pendulum is fired.

3. 2. The electronic suicide fuse structure according to claim 1, further comprising a second safety structure, the second safety structure including a second detonator hole located below the first safety structure and formed so that the explosive force of the electric detonator is transmitted to the spit back below, and an opening and closing part that is opened by centrifugal force while blocking the second detonator hole.

4. The opening and closing portion is The rotor is configured to isolate the second detonator hole from the electric detonator, and to move in the circumferential direction of the bullet by centrifugal force around a rotation axis formed on the side of the second detonator hole, and to open the second detonator hole; The first safety structure includes: The centrifugal pendulum further includes a support protrusion protruding from a lower side thereof, and a fifth through hole formed so that the support protrusion can move in a state of penetrating downward, 4. The electronic suicide fuse structure according to claim 3, wherein the support projections are movable outwardly by centrifugal force while the rotor is fixed so as not to move, thereby allowing the rotor to rotate.

5. The rotor has a gear formed on an outer peripheral surface on an opening / closing side that opens and closes the second detonator hole around a rotation shaft, and a weight portion formed on the opposite rotation side, a conversion gear unit having a first gear unit at an upper side thereof which rotates by meshing with a gear of the rotor, and a second gear unit at a lower side thereof which has a relatively large gear ratio; 5. The electronic suicide fuse structure according to claim 4, further comprising a speed adjusting part contacting the conversion gear part to reduce the speed by providing rotational resistance.

6. 5. The electronic suicide fuse assembly of claim 4, further comprising a penetration formed in the rotor for mounting a link charge to facilitate ignition of the spitback.

7. 3. The electronic suicide fuse structure according to claim 2, further comprising a cap-shaped upper plate structure that is coupled to and covers the lower plate structure from above, and has a first receiving groove and a second receiving groove that receive the upper ends of the first pin and the second pin, respectively.

8. The substrate module includes:

2. The electronic suicide fuse structure according to claim 1, wherein the second conductor extends along the outer periphery, and is configured to generate an effect similar to a short circuit of the second conductor when the board module is damaged.

9. 2. The electronic suicide fuse structure according to claim 1, wherein the first conductive wire and the second conductive wire are thin conductive wires that can conduct electricity well and are formed by wire bonding or wedge bonding.

10. 3. The electronic suicide fuse structure according to claim 2, wherein the first pin and the second pin are respectively mounted on a tongue spring.

11. 2. The electronic suicide fuse structure according to claim 1, wherein the backup battery is formed on an upper portion, and a bottom surface of electrodes protruding to the left and right are electrically connected to the substrate module.

12. The electronic self-destruct fuze structure according to claim 1, characterized in that the centrifugal pendulum is provided with a fixing member for preventing the pendulum from moving at a fixed position, a short-circuiting protrusion for cutting the first conducting wire, a fixing protrusion for clamping the impact pendulum, and a supporting protrusion for controlling the rotation of the rotor.

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