Offensive and defensive dual-purpose hand grenade and use method

Abstract

The invention discloses an offensive and defensive dual-purpose hand grenade and a using method, and belongs to the technical field of hand grenades. The device comprises a fragment sleeve, a bomb body and a detonating mechanism. Wherein the elastic body is arranged in the fragment sleeve in a sliding manner, but is not separated from the sleeve body; the detonating mechanism comprises an ignition assembly arranged in the fragment sleeve and a detonator arranged in the bomb body shell. Wherein the detonator is connected with the ignition assembly through a blasting fuse. When defense combat is carried out, the explosive in the shell of the bomb body is directly detonated through the detonating mechanism; at the moment, the projectile body is located in the fragment sleeve; during explosion, a large number of fragments are accompanied by shock waves generated by explosion. When an attack combat is carried out, the projectile body is pulled out of the fragment sleeve; at the moment, the projectile body is located outside the fragment sleeve; during explosion, a large number of fragments are not generated, and impact waves generated by explosion cause harm to enemies; and meanwhile, the fragment sleeve is equivalent to an extended grab handle of the projectile body, so that the throwing distance can be increased.

Description

Technical Field

[0001] The invention belongs to the technical field of hand grenades, and more specifically, relates to an offensive and defensive hand grenade and a use method thereof. Background Art

[0002] Hand grenades are a type of throwing weapon for individual soldiers. There are many types of hand grenades. The M24 long-handled hand grenade has a long wooden handle at one end of the grenade body. When using it, hold the wooden handle and pull the fuse at the lower end of the wooden handle to start the explosion delay. The Mark2 egg-shaped hand grenade has no long handle and uses a safety pin pull ring as a safety. The way to detonate is to release the paddle and fire the firing pin. The way to use it is to hold the grenade body and paddle, pull out the safety pin pull ring, and release the paddle to start the explosion delay.

[0003] The advantage of long-handled grenades is that the long handle increases the throwing torque, which allows the throwing distance to be longer. At the same time, long-handled grenades are not easy to roll after landing, which makes the damage hit rate higher. The disadvantage is that long-handled grenades are extremely inconvenient for soldiers to carry due to their long wooden handles. After the long-handled grenade pulls the fuse, the grenade enters the explosion delay and cannot be terminated. Soldiers need to throw it immediately. If they misjudge the battle situation and fail to throw it in time, they will accidentally injure their own personnel. For egg-shaped grenades, the advantage is that they are small in size and easy to carry. After the soldier throws it, it enters the explosion delay and will not accidentally injure himself due to delay misjudgment.

[0004] In addition, grenades can also be divided into offensive grenades and defensive grenades; offensive grenades do not produce a large number of fragments when they explode, and rely on the shock wave generated by the explosion to cause damage to the enemy. Generally, when performing offensive combat missions without shelter, offensive grenades do not produce fragments, which can prevent fragments from accidentally injuring one's own personnel who are not covered by shelter. The explosion of defensive grenades will produce a large number of fragments. In addition to the shock wave generated by the explosion, a large number of fragments will increase the damage radius. Generally, when performing defensive combat missions with shelters, defensive grenades rely on a large number of fragments generated by the explosion to cause damage to enemy personnel, while one's own side will not be harmed by fragments behind the shelter. Therefore, it is of great significance to design a grenade that can take into account the respective advantages of long-handled grenades and egg-shaped grenades, and can flexibly switch between offensive and defensive performance.

[0005] For example, in patent CN106871744A, a grenade with a retractable handle is disclosed. In the application, the handle of the grenade is made of glass fiber reinforced plastic material or carbon fiber material to form a sleeve-shaped structure; after being retracted, it is very short, only 60 mm, and the volume is very small, which is convenient for storage and carrying. The reduction of the weight of the handle itself increases the amount of ammunition that soldiers can carry. After the handle is extended, it can reach 300 mm, which has the advantages of a long-handled grenade with a long throwing distance and is not easy to roll after landing, thereby improving the effect of damaging the target.

[0006] For another example, in patent CN116147433A, a safety-type hand grenade with a quasi-spherical fuse-warhead integrated structure is disclosed. In this application, the principle of the fuse-warhead integrated structure is adopted instead of the simple fuse-warhead stacking structure. The damage warhead and the safety-type delayed detonation fuze are integrated into one design, the fuze grip structure of the traditional hand grenade is eliminated, and the safety device is sealed inside with a nut. The overall outline of the grenade is close to a sphere, and the center of mass coincides with the center of the sphere. The air resistance characteristics during throwing and flying are independent of the grenade's flight posture, the resistance characteristics are uniform, the throwing distance is long, and it is easy to achieve accurate throwing.

[0007] The above applications are all technical improvements made to grenades, and all have certain improvement advantages, but there is still room for optimization. For example, in the patent CN106871744A, the advantages of the handleless grenade, which is small and easy to carry, and the long-handled grenade, which has a long throwing distance and is not easy to roll after landing, can be taken into account. However, the grenade in this application cannot cancel the detonation delay, so there is a certain risk of accidental injury; at the same time, it does not have the function of flexibly switching between offensive grenades and defensive grenades. Summary of the invention

[0008] 1. Problems to be solved

[0009] In view of at least some of the problems existing in the above-mentioned prior art, the present invention proposes a dual-purpose offensive and defensive grenade and a method of use, the purpose of which is to solve the problem that the existing hand grenades cannot well balance the convenience of carrying and long-distance throwing, as well as the problem that the offensive performance and the defensive performance cannot be flexibly switched.

[0010] 2. Technical solution

[0011] In order to solve the above problems, the technical solution adopted by the present invention is as follows:

[0012] The invention discloses a dual-purpose grenade for attack and defense, comprising:

[0013] Fragment sleeve,

[0014] The fragment sleeve comprises a sleeve body and a sleeve bottom cover arranged at the bottom of the sleeve body, and a fuze chamber is arranged on the sleeve bottom cover;

[0015] Projectile,

[0016] The projectile comprises a projectile shell and a projectile bottom cover which are connected to each other; wherein the projectile shell is filled with explosives; the projectile bottom cover is slidably arranged in the sleeve body but does not separate from the sleeve body; and the two are positioned by adsorption of permanent magnets;

[0017] and the detonation mechanism,

[0018] The described detonating mechanism includes a firing component disposed in the fuse chamber and a detonator disposed in the projectile casing; wherein,

[0019] The detonator and the firing component are connected by a fuse.

[0020] In some embodiments, the firing component includes a firing pin and a primer seat disposed in the fuse chamber and spaced apart from each other; wherein,

[0021] One end of the firing pin away from the primer seat is connected with a firing pin spring;

[0022] One end of the primer seat facing the firing pin is provided with an impact tube, and a base primer is sleeved on the impact tube; the bottom of the inner cavity of the base primer is coated with primer explosive, and there is a spacing between the bottom and the end of the impact tube.

[0023] In some embodiments, a tension spring is sleeved on the base primer, one end of the tension spring is connected with the end face of the primer seat, and the other end is connected with a flange on the base primer.

[0024] In some embodiments, a plurality of flash holes are circumferentially formed in the impact tube; the end of the fuse extends into the impact tube through a through hole on the primer seat.

[0025] In some embodiments, the firing component is connected with a safety component; the safety component includes a grip and a stop portion, wherein,

[0026] One end of the grip is hinged to the fragmentation sleeve, and the other end is provided with an avoidance groove for the safety lever on the bottom cover of the sleeve to pass through; a torsion spring is assembled between the grip and the fragmentation sleeve, and a safety pin is provided at the end of the safety lever passing through the avoidance groove;

[0027] One end of the stop portion is located between the firing pin and the base primer, and the other end penetrates through the sleeve body and is connected with the grip.

[0028] In some embodiments, the stop portion includes a rotating pin and a locking pin which are engaged with each other; wherein, the rotating pin is rotatably disposed on the bottom cover of the sleeve, one end of the rotating pin extends into the fuse chamber and compresses the firing pin spring through the firing pin; the other end is snapped into the bayonet at the end of the locking pin;

[0029] The other end of the locking pin passes through the avoidance groove on the grip and is connected with a stop block.

[0030] In some embodiments, the fuse is coated with a flexible heat shrinkable tube.

[0031] In some embodiments, the bottom of the projectile bottom cover is provided with a plurality of legs distributed in a ring; wherein,

[0032] The leg is clamped in the limiting groove on the side wall of the fuse chamber, and the height of the leg is higher than that of the fuse chamber;

[0033] A sliding block is provided on the leg; a first sliding groove for the sliding block to be inserted into is provided on the inner wall of the sleeve body, and a second sliding groove for the sliding block to be inserted into is provided on the side wall of the fuse chamber, and the positions of the first sliding groove and the second sliding groove correspond to each other.

[0034] In some embodiments, a pulling ring is connected to the top of the projectile shell; the permanent magnet is arranged at the bottom of the projectile bottom cover.

[0035] As the using method of an offensive and defensive dual-purpose grenade as described above, it includes the following steps.

[0036] When conducting defensive operations, directly detonate the explosive in the projectile shell through the detonation mechanism; at this time, the projectile is located inside the fragmentation sleeve; when exploding, in addition to the shock wave generated by the explosion, a large number of fragments will also be accompanied.

[0037] When conducting offensive operations, hold the grip of the fragmentation sleeve and the detonation mechanism with one hand, pull the projectile out of the fragmentation sleeve with the other hand, and then pull out the safety pin of the detonation mechanism; then release the grip and throw the grenade.

[0038] At this time, the projectile is located outside the fragmentation sleeve; when exploding, a large number of fragments are not generated, and the enemy is damaged by relying on the shock wave generated by the explosion; at the same time, the fragmentation sleeve is equivalent to an extended grip of the projectile, which can increase the throwing distance.

[0039] 3. Beneficial effects

[0040] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0041] (1) For the offensive and defensive dual-purpose grenade of the present invention, the projectile is slidably arranged in the fragmentation sleeve, and the projectile will not completely fall off from the fragmentation sleeve; by detonating the projectile inside the fragmentation sleeve or sliding it outside the fragmentation sleeve, the advantages of small volume and long throwing distance can be taken into account; at the same time, the flexible switching between the offensive performance and the defensive performance can be realized. In addition, the ignition component of the detonation mechanism is arranged in the fragmentation sleeve, and the detonating detonator of the detonation mechanism is arranged in the projectile; making the switching between the offensive and defensive properties of the grenade more convenient and fast, so as to effectively avoid the risks of accidental injury and delaying the fighter due to the cumbersome switching operation.

[0042] (2) A dual-purpose offensive and defensive grenade of the present invention uses a firing pin to drive a primer seat in the firing assembly, and then the base primer strikes the impact tube for ignition; rather than the traditional method of the firing pin piercing the base primer. The ignition method of the present invention does not require piercing the base primer, thus requiring less impact force. Smaller-sized firing pins and firing pin springs can be used, which not only helps reduce costs but also saves more space inside the grenade. With the same volume, more explosive can be assembled to enhance the power of the grenade.

[0043] (3) A dual-purpose offensive and defensive grenade of the present invention uses a permanent magnet to complete the adsorption and positioning between the grenade body and the fragmentation sleeve, which not only ensures the stability of the relative position between the grenade body and the fragmentation sleeve under different detonation modes, but also makes the sliding-out operation of the grenade body more convenient and fast, which is conducive to reducing the operation difficulty and saving operation time.

[0044] (4) A dual-purpose offensive and defensive grenade of the present invention optimizes the structure of the safety component. After the safety pin is pulled out and the grip is not released, the firing component will not be triggered; at this time, inserting the safety pin back can cancel the throwing of the grenade; thus further ensuring the flexibility and safety of use.

[0045] (5) A method of using a dual-purpose offensive and defensive grenade of the present invention. During offensive operations, hold the grip of the fragmentation sleeve and the detonation mechanism with one hand, pull out the grenade body from the fragmentation sleeve with the other hand, and then pull out the safety pin of the detonation mechanism; then release the grip and throw the grenade; the whole switching operation is convenient and fast, without the need for frequent hand-changing operations. At the same time, the overall length of the grenade is increased, which can ensure the throwing distance. BRIEF DESCRIPTION OF THE DRAWINGS

[0046] Figure 1 is a schematic structural diagram of a dual-purpose offensive and defensive grenade of the present invention;

[0047] Figure 2 is a side cross-sectional view of a dual-purpose offensive and defensive grenade of the present invention;

[0048] Figure 3 is a schematic structural diagram of the sleeve body in the present invention;

[0049] Figure 4 is a schematic structural diagram of the grenade body in the present invention;

[0050] Figure 5 is a schematic structural diagram of the inside of the fuse chamber in the present invention;

[0051] Figure 6 is a schematic connection diagram between the safety component and the firing component in the present invention;

[0052] Figure 7Schematic diagram of the connection between the percussion cap seat and the fuse in the present invention;

[0053] Figure 8 Schematic diagram of the state where the projectile slides outside the fragmentation sleeve in the present invention;

[0054] Figure 9 For Figure 8 Partial enlarged schematic diagram of part A in

[0055] In the figure: 100, fragmentation sleeve; 110, sleeve body; 111, first sliding groove; 120, sleeve bottom cover; 130, fuse chamber; 131, limit groove; 132, second sliding groove;

[0056] 200, projectile; 210, projectile shell; 220, projectile bottom cover; 221, legs; 222, sliding block; 230, permanent magnet; 240, pulling ring;

[0057] 300, detonation mechanism; 310, ignition assembly; 311, firing pin; 312, percussion cap seat; 313, firing pin spring; 314, impact tube; 3141, flash hole; 315, base percussion cap; 316, tension spring; 320, detonator; 330, fuse;

[0058] 340, safety assembly; 341, grip; 342, stop portion; 3421, pivot pin; 3422, locking pin; 3423, stop block; 343, torsion spring; 344, safety lever; 345, safety pin; 346, protective cover. Detailed implementation manners

[0059] To further understand the content of the present invention, the present invention will be described in detail with reference to the accompanying drawings.

[0060] In the description of the present invention, it should be noted that the orientation or positional relationship indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. is based on the orientation or positional relationship shown in the accompanying drawings, and is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation to the present invention. In addition, the terms "first", "second", "third" are only used for descriptive purposes and cannot be construed as indicating or implying relative importance.

[0061] Regarding the "telescopic handle" technology adopted in the prior art, that is, the handle of the grenade is designed as a telescopic structure, which can reduce the volume of the grenade for convenient carrying while ensuring the throwing distance. However, it cannot well solve the problem of flexible switching between offensive grenades and defensive grenades.

[0062] Regarding the problem of switching between offensive and defensive performances, the optimal solution that can be thought of is to externally install a fragment sleeve on the defensive grenade. When conducting defensive operations, the defensive grenade and the fragment sleeve are used as a whole; during offensive operations, the defensive grenade is taken out of the fragment sleeve and used alone. However, due to the problems of taking out and detonating the defensive grenade, soldiers need to constantly change hands, which increases the operation difficulty, not only has poor safety, but also easily delays the fighter opportunity.

[0063] The present invention provides an offensive and defensive dual-purpose grenade and a using method, and its main purpose is to have the function of switching between offensive performance and defensive performance while taking into account small volume and long throwing distance, and the switching operation is convenient and fast.

[0064] The following further describes the present invention in conjunction with specific embodiments.

[0065] As Figure 1 、 Figure 2 、 Figure 4 As shown, an offensive and defensive dual-purpose grenade of this embodiment includes a fragment sleeve 100, a projectile body 200, and a detonating mechanism 300. The fragment sleeve 100 includes a sleeve body 110 and a sleeve bottom cover 120 that are connected to each other. Among them, the sleeve body 110 is made of metal and has openings at both ends, and a series of prefabricated fragments are provided on its outer surface. After the sleeve body 110 explodes, a large number of prefabricated fragments fly around to cause damage in a large range. Preferably, the sleeve body 110 can be made of cast iron. The sleeve bottom cover 120 is provided at the bottom of the sleeve body 110, and a fuse chamber 130 is formed on the sleeve bottom cover 120.

[0066] The projectile body 200 includes a projectile body shell 210 and a projectile body bottom cover 220 that are connected to each other. Among them, explosives are filled in the projectile body shell 210; the projectile body bottom cover 220 is slidably arranged in the sleeve body 110 but does not break away from the sleeve body 110 to drive the projectile body shell 210 to switch inside and outside the sleeve body 110.

[0067] The detonating mechanism 300 includes a firing component 310, a detonator 320, and a fuse 330 connecting the firing component 310 and the detonator 320. Among them, the firing component 310 is arranged in the fuse chamber 130; the detonator 320 is arranged in the projectile body shell 210.

[0068] A kind of offensive and defensive dual-purpose grenade in this embodiment, during defensive operations, it operates in the same way as an ordinary grenade, directly detonating the explosive in the grenade body shell 210 through the detonation mechanism 300; at this time, the grenade body 200 is located inside the fragmentation sleeve 100; during the explosion, in addition to the shock wave generated by the explosion, there will also be a large number of fragments. During offensive operations, hold the grip 341 of the fragmentation sleeve 100 and the detonation mechanism 300 with one hand, pull out the grenade body 200 from the fragmentation sleeve 100 with the other hand, and then pull out the safety pin 345 of the detonation mechanism 300; then release the grip 341 and throw the grenade; the whole switching operation is convenient and fast, without the need for frequent hand-changing operations. At this time, since the grenade body 200 is located outside the fragmentation sleeve 100; during the explosion, no large number of fragments are generated, and the enemy is damaged by the shock wave generated by the explosion; at the same time, the fragmentation sleeve 100 is equivalent to an extended grip of the grenade body 200, which can increase the throwing distance.

[0069] Specifically, referring to Figures 3 - 5 As shown, several legs 221 distributed in a ring are provided at the bottom of the grenade body bottom cover 220. Among them, the legs 221 are clamped in the limiting grooves 131 on the side wall of the fuse chamber 130, and the height of the legs 221 is higher than the height of the fuse chamber 130 to prevent interference with the components in the fuse chamber 130.

[0070] Furthermore, sliding blocks 222 are provided on the legs 221. A first sliding groove 111 for the sliding blocks 222 to be inserted into is provided on the inner wall of the sleeve body 110, and a second sliding groove 132 for the sliding blocks 222 to be inserted into is provided on the side wall of the fuse chamber 130; and the positions of the first sliding groove 111 and the second sliding groove 132 correspond one by one. That is to say, after the sleeve body 110 and the sleeve bottom cover 120 are assembled into one body, the first sliding groove 111 and the second sliding groove 132 at the corresponding positions are mutually communicated to ensure the smooth sliding of the sliding blocks 222. In fact, the limiting groove 131 on the side wall of the fuse chamber 130 is also communicated with the second sliding groove 132.

[0071] In some embodiments, in order to facilitate sliding the grenade body shell 210 out of the sleeve body 110, a pulling ring 240 is provided at the top of the grenade body shell 210.

[0072] Further, a permanent magnet 230 is provided at the bottom of the projectile bottom cover 220 for adsorbing and positioning with the inner wall of the sleeve body 110. When the projectile bottom cover 220 is located at the bottom of the sleeve body 110, the permanent magnet 230 adsorbs with the inner wall at the bottom end of the sleeve body 110, so that the projectile shell 210 is held within the sleeve body 110. This state is a defensive hand grenade; when the projectile bottom cover 220 slides to the top of the sleeve body 110 (without detaching from the sleeve body), the permanent magnet 230 adsorbs with the inner wall at the top end of the sleeve body 110, so that the projectile shell 210 is held outside the sleeve body 110. This state is an offensive hand grenade. Since the adsorption force of the permanent magnet 230 needs to be overcome during the sliding process of the projectile bottom cover 220. Therefore, the automatic sliding of the projectile bottom cover 220 can be effectively prevented.

[0073] In this embodiment, the permanent magnet 230 is used to complete the adsorption and positioning between the projectile 200 and the fragmentation sleeve 100, which not only ensures the stability of the relative position between the projectile 200 and the fragmentation sleeve 100 under different detonation modes, but also makes the sliding operation of the projectile 200 more convenient and fast, which is beneficial to reducing the operation difficulty and saving the operation time. Of course, a limiting block can be added at the place where the first sliding groove 111 is close to the top of the sleeve bottom cover 120, or the first sliding groove 111 is not opened to the top of the sleeve bottom cover 120 to prevent the projectile bottom cover 220 from sliding out of the sleeve body 110.

[0074] Traditional ignition methods require a firing pin to pierce the primer cap and strike the primary explosive for ignition and detonation, which requires a large impact force. Therefore, it is not conducive to saving the space inside the fragmentation sleeve 100. For this reason, in this embodiment, the structure of the ignition assembly 310 is further optimized to reduce the internal space occupied by the ignition assembly 310.

[0075] Reference Figure 5 、 Figure 7 As shown, the ignition assembly 310 includes a firing pin 311 and a primer seat 312 disposed in the fuse chamber 130. Among them, one end of the firing pin 311 is disposed in the fuse chamber 130, and the primer seat 312 is disposed at the other end in the fuse chamber 130, and there is a certain distance between the two.

[0076] One end of the firing pin 311 away from the primer seat 312 is connected with a firing pin spring 313. One end of the firing pin spring 313 is connected with the firing pin 311, and the other end is connected with the inner wall of the fuse chamber 130, and the firing pin spring 313 is in a compressed state.

[0077] One end of the percussion cap seat 312 facing the firing pin 311 is provided with an impact tube 314. A base percussion cap 315 is sleeved on the impact tube 314, and a primer is coated on the bottom of the inner cavity of the base percussion cap 315. It is worth mentioning that the primer is prior art and can be lead styphnate, lead azide, dinitroazophenol, etc., and no specific limitation is made here. At the same time, a tension spring 316 is sleeved on the base percussion cap 315. One end of the tension spring 316 is connected to the end face of the percussion cap seat 312, and the other end is connected to the flange on the base percussion cap 315, so as to leave a certain impact space between the bottom of the base percussion cap 315 and the end of the impact tube 314.

[0078] When firing, the firing pin spring 313 releases elastic force to drive the firing pin 311 to impact the base percussion cap 315. Under the action of the impact force, the base percussion cap 315 compresses the tension spring 316, so that the end of the impact tube 314 collides with the primer at the bottom of the inner cavity of the base percussion cap 315 to generate a spark and ignite the fuse 330.

[0079] In some embodiments, a flexible heat shrink tube (not shown in the figure) is sleeved outside the burning fuse 330 to achieve the effects of waterproofing and moisture-proofing; at the same time, it can prevent the burning fuse 330 from being too long and getting entangled.

[0080] In some embodiments, a plurality of fire transfer holes 3141 are formed in the circumferential direction of the impact tube 314. The end of the fuse 330 passes through the through hole on the percussion cap seat 312 and extends into the impact tube 314 to ensure that the spark generated by the excitation of the primer can smoothly ignite the fuse 330.

[0081] For a dual-purpose offensive and defensive grenade in this embodiment, the firing assembly 310 uses the firing pin 311 to drive the percussion cap seat 312, and then the base percussion cap 315 and the impact tube 314 are impacted to fire. Compared with the traditional firing method of the firing pin 311 piercing through the base percussion cap 315, the firing assembly 310 in this embodiment does not need to pierce through the base percussion cap 315, so the required impact force is smaller. Therefore, a smaller-sized firing pin 311 and firing pin spring 313 can be used, which not only helps to reduce costs, but also saves more space inside the grenade. In the case of the same volume, more explosive charges can be assembled to enhance the power of the grenade.

[0082] For a dual-purpose offensive and defensive grenade in this embodiment, the firing assembly 310 is also connected with a safety assembly 340 for controlling the start of the firing assembly 310. Refer to Figure 3 、 Figure 6 As shown, the safety assembly 340 includes a grip 341 and a stop portion 342. Among them, one end of the grip 341 is hinged to the fragmentation sleeve 100; the other end is provided with an avoidance groove for the safety lever 344 on the sleeve bottom cover 120 to pass through. At the same time, a safety pin 345 is provided at the end of the safety lever 344 passing through the avoidance groove. Of course, in order to facilitate the removal of the safety pin 345, a pull ring can be connected to the safety pin 345.

[0083] One end of the stop portion 342 is located between the firing pin 311 and the primer cap 315 and presses the firing pin spring 313; the other end penetrates through the sleeve body 110 and is connected to the grip 341. Meanwhile, a torsion spring 343 is assembled between the grip 341 and the fragmentation sleeve 100 for driving the grip 341 to rotate along the hinge point, so as to drive the stop portion 342 to release the limit on the firing pin spring 313 and start the ignition assembly 310.

[0084] Specifically, as Figure 5 , Figure 8 , Figure 9 shown, the stop portion 342 includes a rotating pin 3421 and a locking pin 3422 which are engaged with each other. Among them, the rotating pin 3421 is rotatably arranged in a through hole opened on the side wall of the fuse chamber 130. One end of the rotating pin 3421 extends into the fuse chamber 130 and compresses the firing pin spring 313 through the firing pin 311; the other end is located in the bayonet at the end of the locking pin 3422. Meanwhile, the end of the locking pin 3422 passes through an avoidance groove on the grip 341 and is connected with a stop block 3423, and a protective cover 346 is sleeved on the stop block 3423.

[0085] In this embodiment, by optimizing the structure of the safety component 340, after the safety pin 345 is pulled out and the grip 341 is not released, the ignition assembly 310 will not be triggered; at this time, when the safety pin 345 is inserted back again, the throwing of the grenade can be cancelled; thereby further ensuring the flexibility and safety in use.

[0086] A dual-purpose offensive and defensive grenade in this embodiment has the following usage method:

[0087] When conducting defensive operations, directly detonate the explosive in the bomb body shell 210 through the detonation mechanism 300; at this time, the bomb body 200 is located in the fragmentation sleeve 100; during the explosion, in addition to the shock wave generated by the explosion, there will also be a large number of fragments.

[0088] The specific operation is as follows: Hold the fragment sleeve 100 and the grip 341 with one hand, and pull out the safety pin 345 with the other hand; then, release the grip 341 and throw the grenade; at this time, the limiting effect of the safety assembly 340 on the ignition assembly 310 is released; under the action of the torsion spring 343, the grip 341 drives the latch 3422 to disengage from the pivot pin 3421 through the stop block 3423, and the pivot pin 3421 rotates under the elastic force of the firing pin spring 313; at the same time, the firing pin 311 strikes the primer cap 315 under the push of the firing pin spring 313; the primer cap 315 compresses the tension spring 316 under the strike of the firing pin 311, so that the end of the impact tube 314 collides with the primary explosive at the bottom of the inner cavity of the primer cap 315 to generate a spark, which ignites the fuse 330, and finally the fuse 330 detonates the detonator 320 in the projectile casing 210, and then detonates the explosive in the projectile casing 210. Of course, after the safety pin 345 is pulled out, if the grip 341 is not released, the ignition assembly 310 will not be triggered; at this time, inserting the safety pin 345 back can cancel the throwing of the grenade.

[0089] When conducting an offensive operation, hold the fragment sleeve 100 and the grip 341 with one hand, and pull the projectile 200 out of the fragment sleeve 100 with the other hand; then pull out the safety pin 345 of the detonation mechanism 300; then release the grip 341 and throw the grenade; the whole switching operation is convenient and fast, without the need for frequent hand-changing operations. At this time, the projectile 200 is outside the fragment sleeve 100; during the explosion, no large amount of fragments are generated, and the enemy is damaged by the shock wave generated by the explosion; at the same time, the fragment sleeve 100 is equivalent to an extended grip of the projectile 200, which can increase the throwing distance.

[0090] In summary, an offensive and defensive dual-purpose grenade and its use method in this embodiment, while taking into account the small volume and long throwing distance; have the function of switching between offensive performance and defensive performance, and the switching operation is convenient and fast, which can greatly reduce the risk of misoperation.

[0091] The above schematically describes the present invention and its embodiments. The description is not restrictive. What is shown in the drawings is only one of the embodiments of the present invention, and the actual structure is not limited thereto. Therefore, if those of ordinary skill in the art are inspired by it and design similar structural modes and embodiments to this technical solution without creative efforts without departing from the purpose of the present invention, they shall fall within the protection scope of the present invention.

Claims

1. A dual-purpose grenade for attack and defense, characterized in that: include Fragment sleeve (100), The fragment sleeve (100) comprises a sleeve body (110) and a sleeve bottom cover (120) arranged at the bottom of the sleeve body (110), and a fuze chamber (130) is provided on the sleeve bottom cover (120); Projectile (200), The projectile (200) comprises a projectile shell (210) and a projectile bottom cover (220) which are connected to each other; wherein the projectile shell (210) is filled with explosives; the projectile bottom cover (220) is slidably disposed in the sleeve body (110) but does not separate from the sleeve body (110); and the two are positioned by adsorption through a permanent magnet (230); and a detonating mechanism (300), The detonation mechanism (300) comprises an ignition assembly (310) disposed in the fuze chamber (130), and a detonator (320) disposed in the shell (210); wherein: The detonator (320) and the ignition assembly (310) are connected via a fuse (330).

2. The offensive and defensive grenade according to claim 1, characterized in that: The ignition assembly (310) comprises a firing pin (311) and a percussion cap seat (312) which are arranged in the fuze chamber (130) and are separated from each other; wherein: One end of the firing pin (311) away from the primer seat (312) is connected to a firing pin spring (313); A striker tube (314) is provided at one end of the primer seat (312) facing the firing pin (311), and a primer (315) is sleeved on the striker tube (314); the bottom of the inner cavity of the primer (315) is coated with detonating powder, and a distance is left between the bottom and the end of the striker tube (314).

3. The offensive and defensive grenade according to claim 2, characterized in that: A tension spring (316) is sleeved on the primer cap (315), one end of the tension spring (316) is connected to the end surface of the primer cap seat (312), and the other end is connected to the retaining edge on the primer cap (315).

4. The offensive and defensive grenade according to claim 2, characterized in that: A plurality of fire transfer holes (3141) are provided in the circumferential direction of the impact tube (314); the end of the fuse (330) passes through the through hole on the primer seat (312) and extends into the impact tube (314).

5. An offensive and defensive grenade according to any one of claims 1 to 4, characterized in that: The ignition assembly (310) is connected to a safety assembly (340); the safety assembly (340) comprises a handle (341) and a stopper (342), wherein: One end of the handle (341) is hinged to the fragment sleeve (100), and the other end is provided with an escape groove for the safety rod (344) on the sleeve bottom cover (120) to pass through; a torsion spring (343) is installed between the handle (341) and the fragment sleeve (100), and the end of the safety rod (344) passing through the escape groove is equipped with a safety pin (345); One end of the stopper (342) is located between the firing pin (311) and the primer (315), and the other end passes through the sleeve body (110) and is connected to the grip (341).

6. The offensive and defensive grenade according to claim 5, characterized in that: The stopper (342) comprises a rotating pin (3421) and a bayonet pin (3422) which are mutually engaged; wherein the rotating pin (3421) is rotatably arranged on the sleeve bottom cover (120); one end of the rotating pin (3421) extends into the fuze chamber (130) and compresses the firing pin spring (313) through the firing pin (311); and the other end is engaged with the bayonet socket at the end of the bayonet pin (3422); The other end of the latch (3422) passes through the avoidance groove on the handle (341) and is connected to a stop block (3423).

7. The offensive and defensive grenade according to claim 5, characterized in that: The fuse (330) is coated with a flexible heat shrink tube.

8. The offensive and defensive grenade according to claim 1, characterized in that: The bottom of the body bottom cover (220) is provided with a plurality of supporting legs (221) distributed in a ring shape; wherein: The support leg (221) is clamped in a limiting groove (131) on the side wall of the fuze chamber (130), and the height of the support leg (221) is higher than the height of the fuze chamber (130); The support leg (221) is provided with a sliding block (222); the inner wall of the sleeve body (110) is provided with a first sliding groove (111) for the sliding block (222) to be inserted into; the side wall of the fuze chamber (130) is provided with a second sliding groove (132) for the sliding block (222) to be inserted into; and the positions of the first sliding groove (111) and the second sliding groove (132) correspond to each other.

9. The offensive and defensive grenade according to claim 8, characterized in that: The top of the projectile shell (210) is connected to a pulling ring (240); the permanent magnet (230) is arranged at the bottom of the projectile bottom cover (220).

10. A method for using an offensive and defensive grenade as claimed in any one of claims 1 to 9, characterized in that: The following steps are included: When conducting a defensive operation, the explosive in the shell (210) of the projectile is directly detonated by the detonation mechanism (300); at this time, the projectile (200) is located in the fragment sleeve (100); when the explosion occurs, in addition to the shock wave generated by the explosion, a large amount of fragments will also be produced; When conducting offensive operations, one hand holds the fragment sleeve (100) and the grip (341) of the detonating mechanism (300), and the other hand pulls the projectile body (200) out of the fragment sleeve (100), and then pulls the safety pin (345) of the detonating mechanism (300); then the grip (341) is released and the grenade is thrown out; At this time, the projectile (200) is located outside the fragment sleeve (100); when it explodes, a large number of fragments are not generated, and the shock wave generated by the explosion causes damage to the enemy; at the same time, the fragment sleeve (100) is equivalent to an extended handle of the projectile (200), which can increase the throwing distance.

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