Flying grenade rotor wing folding device

Abstract

The utility model belongs to the technical field of flying grenades, and discloses a flying grenade rotor wing folding device. Comprising a base, a groove is formed in the top of the base, a grenade is placed in the groove, the top of the base is in threaded connection with a protective cylinder, the protective cylinder is located on the outer side of the grenade, a folding mechanism is arranged on the top of the protective cylinder, and a top cover is installed on the portion, located on the outer side of the folding mechanism, of the top of the protective cylinder. The folding mechanism is additionally arranged on the rotor wing, the folding mechanism can be folded to reduce space during throwing, throwing is facilitated, the base and the protective cylinder are additionally arranged to wrap the grenade, the grenade is prevented from being soaked in water, the whole grenade is in a tumbler shape, the balancing weight is matched, the overall stability is improved, and the grenade is kept in an upright state all the time; and the folding mechanism and the rotor wings are arranged at the top, so that the condition that the unmanned aerial vehicle sinks to the bottom and enters water does not occur.

Description

Technical Field

[0001] The utility model relates to the technical field of flying grenades, and more specifically, to a flying grenade rotor folding device. Background Art

[0002] Hand grenade, also known as hand grenade, is a type of ammunition thrown by hand. It is named because the shape and fragments of grenades in Europe in the 17th and 18th centuries resembled pomegranates and pomegranate seeds. It has the characteristics of small size, light weight, simple operation and easy use. Traditional grenades mainly rely on arm strength to throw, with limited throwing distance and high requirements on the experience of the thrower. With the development of drones, flying grenades have also appeared.

[0003] Publication No.: CN218787774U proposes a rotor-type flying grenade, which belongs to the field of flying grenade manufacturing. The rotor-type flying grenade includes a grenade structure, a flight system protective shell and a flight system from top to bottom; the flight system includes a rotor structure, a folding mechanism, a power supply, a control system, a counterweight, and a fixing frame; the flight system protective shell includes an upper top and an arc-shaped bottom with a notch; the utility model combines the accuracy of flight, long distance, and rapidity and stealthiness of throwing, and can not only obtain precise strikes different from ordinary grenades and a mission distance far greater than that of ordinary grenades, but also avoid the problems of slow flight and high noise caused by flying grenades. The rotor of the device is arranged at the bottom. When it is thrown into a puddle, water can easily enter the flight system through the gap of the protective shell, causing the electronic components in the flight system to become damp and short-circuited, affecting the use of the flight system and causing the inability to fly. Utility Model Content

[0004] In order to overcome the above-mentioned defects of the prior art, the utility model proposes a flying grenade rotor folding device.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a flying grenade rotor folding device, comprising a base, a groove is provided on the top of the base, a grenade is placed inside the groove, a protective tube is threadedly connected to the top of the base, the protective tube is located outside the grenade, a folding mechanism is provided on the top of the protective tube, and a top cover is installed on the top of the protective tube and outside the folding mechanism;

[0006] The folding mechanism includes a fixed plate, a telescopic arm, a motor, a rotor, a guide plate and a limit plate. The fixed plate is installed on the top of the protective tube, and four motors are installed on the outside of the fixed plate. The output end of the motor is installed with a telescopic arm. The four telescopic arms are equipped with motors, and the output end of the motor is installed with a rotor. The guide plate is installed on the top of the inside of the top cover, and the limit plate is installed on the outside of the guide plate. The outside of the top cover is provided with a through hole that matches the size of the telescopic arm and the rotor.

[0007] Furthermore, the telescopic arm includes an outer tube and a slide rod, the outer tube is fixedly connected to the output end of the motor, one end of the outer tube is provided with a slide groove, the interior of the slide groove is elastically connected to the slide rod through a limit spring, and the top of the slide rod extending out of the slide groove is equipped with a rotor.

[0008] Furthermore, receiving grooves are provided on both sides of the slide rod in the slide groove, and a clamping block is elastically connected to the inside of the receiving groove through a buffer spring. Clamping holes matching the size of the clamping block are provided on both sides of the outer cylinder, and one side of the clamping block extending out of the clamping hole protrudes outward in an arc shape.

[0009] Furthermore, rollers are rotatably mounted on both sides of the slide bar close to the outer cylinder, and sliding holes slidably connected to the rollers are also provided on both sides of the outer cylinder, and the sliding holes are connected to the clamping holes.

[0010] Furthermore, the limit plate is in an arc-shaped plate shape and is in sliding contact with the block. The limit plate coincides with the center point of the motor, and the bottom of the guide plate is provided with an inclined surface that is in sliding contact with the roller.

[0011] Furthermore, a cavity is provided inside the base, a counterweight is installed at the center of the bottom of the cavity, the base and the top cover are both semicircular, and the protective tube is a cone with a diameter that increases from small to large from top to bottom.

[0012] Compared with the prior art, the beneficial effects of the utility model are: a folding mechanism is added to the rotor, which can be folded to reduce space when throwing, making it convenient to throw; a base and a protective tube are added to wrap the grenade to prevent the grenade from being soaked in water; the whole adopts the shape of a tumbler, and the counterweight block is used to increase the overall stability and keep it upright at all times; a cavity is designed inside the base so that it has buoyancy and floats on the water surface when there is water; the folding mechanism and the rotor are arranged at the top, and will not sink to the bottom or take in water. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0014] Figure 2 It is an exploded view of the overall structure of the utility model;

[0015] Figure 3This is a diagram showing the unfolding effect of the folding mechanism of the utility model;

[0016] Figure 4 It is a cross-sectional view of the overall structure of the utility model;

[0017] Figure 5 It is a schematic diagram of the folding mechanism of the utility model;

[0018] Figure 6 This is a cross-sectional view of the internal structure of the outer cylinder and the slide rod of the utility model;

[0019] Figure 7 For the utility model Figure 6 A magnified view of the structure in the middle.

[0020] In the figure:

[0021] 1. Base; 2. Protective tube; 3. Top cover; 4. Grenade; 5. Folding mechanism; 501. Fixed plate; 502. Outer tube; 503. Motor; 504. Sliding rod; 505. Rotor; 506. Limit spring; 507. Roller; 508. Buffer spring; 509. Block; 6. Counterweight; 7. Guide plate; 8. Limit plate. DETAILED DESCRIPTION

[0022] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0023] See also Figure 1-7 The utility model provides the following technical solutions: a flying grenade rotor folding device, comprising a base 1, a groove is provided on the top of the base 1, a grenade 4 is placed inside the groove, the groove provides a placement space for the grenade 4, a protective tube 2 is threadedly connected to the top of the base 1, the protective tube 2 is made of plastic and is light in weight, the protective tube 2 is located outside the grenade 4, and plays a role in protecting the grenade 4, a folding mechanism 5 is provided on the top of the protective tube 2, a top cover 3 is installed on the top of the protective tube 2 and outside the folding mechanism 5, a cavity is provided inside the base 1, the cavity increases the buoyancy of the base 1, and the base 1 can float on the water surface when it falls into the water, a counterweight 6 is installed at the center of the bottom of the cavity, the base 1 and the top cover 3 are both semicircular, the protective tube 2 is a cone with a diameter that changes from small to large from top to bottom, and the whole is in the shape of a tumbler, and the counterweight 6 plays a role in lowering the overall center to maintain balance.

[0024] The folding mechanism 5 includes a fixed plate 501, a telescopic arm, a motor 503, a rotor 505, a guide plate 7 and a limit plate 8. The fixed plate 501 is installed on the top of the protective tube 2. A circuit board is installed on the fixed plate 501. Four motors 503 are installed on the outside of the fixed plate 501. The output end of the motor 503 is installed with a telescopic arm. The four telescopic arms are equipped with motors. The circuit board is connected to the motor 503 and the motor wires. The circuit board is also electrically connected to an external control device. The circuit board is controlled by the external control device to turn on and off the motor 503 and the motor. The output end of the motor is installed with a rotor 505, and the motor drives the rotor 505 to rotate to achieve flight. The guide plate 7 is installed on the top of the inside of the top cover 3, and the limit plate 8 is installed on the outside of the guide plate 7. The outside of the top cover 3 is provided with a through hole that matches the size of the telescopic arm and the rotor 505. The through hole provides space for the telescopic arm and the rotor 505 to fold and unfold.

[0025] The telescopic arm includes an outer cylinder 502 and a sliding rod 504. The outer cylinder 502 is fixedly connected to the output end of the motor 503. The outer cylinder 502 is also rotatably connected to the fixed plate 501. The motor 503 drives the outer cylinder 502 to rotate. A sliding groove is provided at one end of the outer cylinder 502. The interior of the sliding groove is elastically connected with the sliding rod 504 through a limiting spring 506. The sliding rod 504 is slidably connected to the sliding groove. The sliding position of the sliding rod 504 is limited by the limiting spring 506. The top of the sliding rod 504 extending out of the sliding groove is equipped with a rotor 505. Receiving grooves are provided on both sides of the sliding rod 504 in the sliding groove. The interior of the storing groove is elastically connected with a clamping block 509 through a buffer spring 508. The clamping block 509 is slidably connected to the storing groove. Clamping holes matching the size of the clamping block 509 are provided on both sides of the outer cylinder 502. The clamping blocks are limited by the clamping holes. 509 realizes the fixing of the position of the slide bar 504 after it is unfolded. One side of the block 509 extending out of the card hole is arc-shaped and protrudes outward. The slide bar 504 is rotatably installed with rollers 507 on both sides close to the outer cylinder 502. The outer cylinder 502 is also provided with sliding holes on both sides that are slidably connected to the rollers 507. The sliding holes and the card holes are connected. The sliding holes and the card holes have small diameters to prevent the block 509 from being stuck in the sliding holes. The limiting plate 8 is in the shape of an arc plate and slides against the block 509. The limiting plate 8 coincides with the center point of the motor 503. The limiting plate 8 squeezes the block 509 to realize that the block 509 is separated from the card hole and the outer cylinder 502 and the slide bar 504 are limited. The bottom of the guide plate 7 is provided with an inclined surface that slides against the roller 507. When the roller 507 rolls on the inclined surface, it drives the slide bar 504 to slide in the slide groove of the outer cylinder 502.

[0026] Working principle: When in use, first rotate the protective tube 2, put the grenade 4 in the groove at the top of the base 1, and then rotate the protective tube 2 to cover the grenade 4. At this time, the folding mechanism 5 is folded inside the top cover 3, the block 509 is located in the slide groove of the outer tube 502, the buffer spring 508 and the limit spring 506 are in a compressed state, and the whole is thrown to the target location by manpower. After the base 1 contacts the ground, the counterweight 6 lowers the center of the whole to maintain balance, and the motor 503 is started through the external control device. The motor 503 drives the outer tube 502 to rotate, and the outer tube 502 drives the slide bar 504 and the rotor 505 to rotate. The limit spring 50 The limiting roller 507 rolls on the bottom inclined surface of the guide plate 7, and slides in the sliding hole of the outer cylinder 502 when rolling. After the roller 507 is no longer in contact with the guide plate 7, the thrust of the limiting spring 506 drives the slide bar 504 in the sliding groove of the outer cylinder 502, and extends to the outside of the top cover 3 through the through hole of the top cover 3. At the same time, the clamping block 509 slides from the sliding groove of the outer cylinder 502 to the clamping hole, and the thrust of the buffer spring 508 drives the clamping block 509 to be fixed in the clamping hole, thereby completing the unfolding action of the rotor 505, starting the motor through the external control device, and driving the rotor 505 to rotate through the motor to achieve flight after throwing.

[0027] The above is only a specific implementation of the present application, but the protection scope of the present application is not limited thereto. Any person skilled in the art who is familiar with the present technical field can easily think of changes or substitutions within the technical scope disclosed in the present application, which should be included in the protection scope of the present application. Therefore, the protection scope of the present application should be based on the protection scope of the claims.

[0028] Finally: The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present utility model should be included in the protection scope of the present utility model.

Claims

1. A flying grenade rotor folding device, comprising a base (1), characterized in that: The top of the base (1) is provided with a groove, a grenade (4) is placed inside the groove, a protective tube (2) is threadedly connected to the top of the base (1), the protective tube (2) is located outside the grenade (4), a folding mechanism (5) is provided on the top of the protective tube (2), and a top cover (3) is installed on the top of the protective tube (2) and outside the folding mechanism (5); The folding mechanism (5) comprises a fixed plate (501), a telescopic arm, a motor (503), a rotor (505), a guide plate (7) and a limit plate (8); the fixed plate (501) is mounted on the top of the protective tube (2); four motors (503) are mounted on the outer side of the fixed plate (501); the output end of the motor (503) is mounted with a telescopic arm; the four telescopic arms are each equipped with a motor; the output end of the motor is mounted with a rotor (505); the guide plate (7) is mounted on the top inside the top cover (3); the limit plate (8) is mounted on the outer side of the guide plate (7); and the outer side of the top cover (3) is provided with a through hole matching the size of the telescopic arm and the rotor (505).

2. A flying grenade rotor folding device according to claim 1, characterized in that: The telescopic arm comprises an outer tube (502) and a sliding rod (504); the outer tube (502) is fixedly connected to the output end of the motor (503); one end of the outer tube (502) is provided with a sliding groove; the interior of the sliding groove is elastically connected to the sliding rod (504) via a limit spring (506); the top of the sliding rod (504) extending out of the sliding groove is equipped with a rotor (505).

3. A flying grenade rotor folding device according to claim 2, characterized in that: The slide rod (504) is provided with receiving grooves on both sides of the slide groove, and a clamping block (509) is elastically connected to the inside of the receiving groove via a buffer spring (508). Clamping holes matching the size of the clamping block (509) are provided on both sides of the outer cylinder (502), and one side of the clamping block (509) extending out of the clamping hole protrudes outward in an arc shape.

4. A flying grenade rotor folding device according to claim 3, characterized in that: Rollers (507) are rotatably mounted on both sides of the slide bar (504) close to the outer cylinder (502). Sliding holes slidably connected to the rollers (507) are also provided on both sides of the outer cylinder (502), and the sliding holes are connected to the clamping holes.

5. A flying grenade rotor folding device according to claim 4, characterized in that: The limit plate (8) is in the shape of an arc plate and is in sliding contact with the clamping block (509). The limit plate (8) coincides with the center point of the motor (503). The bottom of the guide plate (7) is provided with an inclined surface that is in sliding contact with the roller (507).

6. A flying grenade rotor folding device according to claim 4, characterized in that: The base (1) has a cavity inside, a counterweight (6) is installed at the center of the bottom of the cavity, the base (1) and the top cover (3) are both semicircular, and the protective tube (2) is a conical shape with a diameter that gradually increases from top to bottom.

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