A dart launching device mounted on a drone

Abstract

The present invention provides a dart launching device mounted on a drone, comprising a bracket, an outer tube, an inner tube, a spring and a dart body, a servo is fixed on the outer side of the bracket near the top, a lever is connected to the output shaft of the servo, and a lock hook is rotatably connected to the outer side of the bracket; the outer tube is installed in the bracket, a spring seat is also installed in the bracket, the inner end of the outer tube is against the spring seat, and the outer tube is connected to the spring seat; a spring is fixed on the spring seat, and one end of the inner tube is fixed to the other end of the spring; a lock hook boss is provided on the inner tube, the lock hook boss and the lock hook are used in conjunction with each other, a limit rod is fixed to the other end of the inner tube, and the dart body is installed in the outer tube through the limit rod. The launching spring in the present invention is connected to the inner tube and the spring seat through a spiral groove, and no other limit device is required, which reduces the number of parts to a minimum, simplifies the structure, and facilitates the use of the dart launching device in conjunction with the drone, which is convenient and efficient.

Description

Technical Field

[0001] The invention belongs to the technical field of unmanned aerial vehicle (UAV) aircraft supporting equipment, and in particular relates to a dart launching device assembled on a UAV. Background Art

[0002] In recent years, wildlife protection and rescue, as well as the capture and disposal of large, dangerous and frightened animals have attracted more and more attention. To capture wild or frightened animals for marking, inspection, migration, or treatment of injuries and illnesses, animals generally need to be anesthetized. However, due to the high alertness of animals and the complex environment they live in, it is difficult for protection and rescue personnel to approach large wild animals that move quickly and are aggressive.

[0003] In recent years, the development of drone technology has provided an effective means to use small drones to approach animals and launch anesthetic needles, thereby avoiding animals escaping due to human approach or casualties caused by animal attacks. In particular, small bionic flapping-wing drones have the characteristics of low noise, strong appearance concealment, and high speed, and have good application prospects.

[0004] However, due to the limited load capacity of small drones, the anesthetic needle launcher needs to be small in size, light in weight, easy to operate, and moderate in power. In addition, in order to avoid scaring the animals, the anesthetic needle launcher is required to emit no flash and low noise during launch.

[0005] Therefore, providing a dart launching device mounted on a drone, which can launch dart-shaped anesthetic needles, is of great significance in the field of wildlife protection and dangerous animal prevention and control. Summary of the invention

[0006] The technical problem to be solved by the present invention is to provide a dart launching device mounted on a drone in view of the deficiencies of the above-mentioned prior art, so as to solve the problems raised in the above-mentioned background technology.

[0007] In order to solve the above technical problems, the technical solution adopted by the present invention is: a dart launching device mounted on a drone, comprising a bracket, an outer tube, an inner tube, a spring and a dart body, wherein the bracket is a cylindrical structure, and a steering gear is fixed on the outer side of the bracket near the top, a lever is connected to the output shaft of the steering gear, and a lock hook is also rotatably connected to the outer side of the bracket;

[0008] The outer tube is also a cylindrical structure, and the outer tube is installed in the bracket, a spring seat is also installed in the bracket, the inner end of the outer tube abuts against the spring seat, and the outer tube is connected to the spring seat;

[0009] A spring is fixed on the spring seat, the inner tube is sleeved in the outer tube, and one end of the inner tube is fixed to the other end of the spring;

[0010] The inner tube is provided with a locking hook boss, which is used in conjunction with the locking hook. A limiting rod is fixed to the other end of the inner tube, and the dart body is installed in the outer tube through the limiting rod.

[0011] Furthermore, two ears for rotatably connecting the lock hook are fixed on the bracket, a through hole is opened on the bracket between the two ears, and a connecting port is also opened on the outer tube at a position opposite to the through hole on the bracket, and the bottom side of the lock hook extends into the outer tube through the through hole and the connecting port.

[0012] Furthermore, a handle is provided at one end of the lock hook, and the handle cooperates with the lever for use. An arc surface is provided on the bottom side of the lock hook, and the arc surface extends into the inner tube.

[0013] Furthermore, the inner cylinder is also a cylindrical structure, and an annular limit rod mounting boss, a lock hook boss and a spring mounting boss are sequentially arranged on the inner cylinder, and two grooves are arranged on the limit rod mounting boss along the axial direction, and a limit rod is respectively installed in each groove;

[0014] The spring mounting boss is provided with a spiral groove, and the spiral groove is used for fixed connection with the spring;

[0015] The locking hook boss is used to cooperate with the arc surface on the bottom side of the locking hook.

[0016] Furthermore, the two limiting rods are symmetrically arranged at the front end of the inner cylinder.

[0017] Furthermore, the spring seat is a short cylindrical structure, one end of the spring seat is provided with an annular boss, the annular boss abuts against the inner side of the bracket, and the other end of the spring seat is provided with a spiral groove for fixed connection with the spring.

[0018] Furthermore, the limiting rod is made of elastic material, and a spiral structure is arranged at the root of the limiting rod, and the connection between the limiting rod and the inner cylinder is completed through the spiral structure at the root of the limiting rod.

[0019] Furthermore, the entire shaft of the limiting rod is prefabricated with an outward deflection, and the end of the shaft of the limiting rod is prefabricated with an inward deflection.

[0020] Furthermore, two elastic tail wings are arranged at the tail end of the dart body. When the dart body is ready to be launched, the elastic tail wings are wrapped around the tail end of the dart body.

[0021] Furthermore, the trailing edge of the elastic tail wing is a forward-swept configuration, and a spiral bend is prefabricated at the rear of the elastic tail wing.

[0022] Compared with the prior art, the present invention has the following advantages:

[0023] 1. The launching spring in the present invention is connected to the spring seat through the spiral groove of the inner tube, and no other limiting device is required, which reduces the number of parts to a minimum and simplifies the structure.

[0024] 2. The contact surface between the lock hook and the inner cylinder in the present invention is an arc surface with the lock hook shaft as the axis. During the upward rotation of the lock hook, the left and right positions of the inner cylinder remain unchanged, and there is no need to further compress the spring to do work, thereby reducing the required trigger force. In addition, due to the friction between the arc surface of the lock hook and the inner cylinder, the lock hook will not be accidentally unlocked under the action of the spring elastic force.

[0025] 3. The present invention provides two elastic tail wings at the rear end of the dart body, which can be folded to reduce the required diameters of the outer tube and the inner tube and reduce the weight. After the dart is installed, the elastic tail wings will contact the inner wall of the inner tube under the action of their own elastic force, generating friction, so that the dart body will not fall off accidentally. The limit rod further mechanically limits the dart body, so that the dart body will not fall off accidentally due to low friction or high overload, further ensuring the safety of the launching device.

[0026] 4. The present invention uses a prefabricated spiral bend at the rear of the elastic tail wing at the tail end of the dart body to make the dart body rotate around its own axis under the action of aerodynamic force, so that the dart body can maintain a stable direction by relying on the two elastic tail wings; in addition, the rotation of the dart body also eliminates the yaw caused by the asymmetric tail wing structure. Therefore, the two elastic tail wings with prefabricated bends not only reduce the number of tail wings to a minimum, simplify the structure, and reduce the weight, but also cleverly utilize the prefabricated bend and folded elastic force of the tail wing to make it stable in flight, easy to install, and will not fall off accidentally.

[0027] 5. The present invention utilizes spring energy storage, and there is no high-pressure gas explosion sound during the launch process, and no high-speed collision occurs between different parts, so the launch noise is small.

[0028] 6. After the dart body of the present invention detaches from the launching device and flies out, the inner tube and the spring still have a certain speed and kinetic energy. At this time, the spring will produce a certain stretch under the action of inertia force, which on the one hand provides buffering and deceleration for the inner tube and the spring, and on the other hand offsets the recoil force after launching, thereby reducing the adverse effect on the attitude of the drone. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Figure 1 It is a schematic diagram of the overall structure of the present invention.

[0030] Figure 2 It is a sectional view of the overall structure of the present invention.

[0031] Figure 3It is a schematic diagram of the overall state of the dart body of the present invention after being launched.

[0032] Figure 4 It is a schematic diagram of the main structure of the dart of the present invention.

[0033] Figure 5 It is a schematic diagram of the dart body of the present invention in a state ready to be launched.

[0034] Figure 6 It is a schematic diagram of a state in which the dart body of the present invention is loaded.

[0035] Figure 7 It is a schematic diagram of another state of the dart body of the present invention being loaded.

[0036] 1- bracket; 2- outer tube; 3- inner tube; 31- limit rod mounting boss; 32- lock hook boss; 33- spring mounting boss; 4- spring; 5- spring seat; 6- lock hook; 7- servo; 8- lever; 9- loading rod; 10- dart body; 11- elastic tail wing; 12- arc surface; 13- limit rod. DETAILED DESCRIPTION

[0037] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0038] like Figure 1-5 As shown, the present invention provides a technical solution: a dart launching device mounted on a drone, comprising a bracket 1, an outer tube 2, an inner tube 3, a spring 4 and a dart body 10;

[0039] The bracket 1 is a cylindrical structure, and two bosses for mounting the steering gear 7 are arranged on the outer side of the bracket 1 near the top, and horizontal screw holes are arranged on the bosses, and the steering gear 7 is fixed to the bracket 1 by screws.

[0040] The output shaft of the steering gear 7 is connected with a lever 8 , and the steering gear 7 can drive the lever 8 to rotate.

[0041] Two ear pieces for rotating and connecting the lock hook 6 are fixed on the bracket 1. A handle is provided at one end of the lock hook 6. The handle cooperates with the lever 8 to drive the lever 8 to rotate through the servo 7. When the lever 8 rotates, the handle can be lifted upward, thereby completing the switching of the state of the lock hook 6.

[0042] The outer tube 2 is also a cylindrical structure, and the outer tube 2 is installed in the bracket 1. The bracket 1 is provided with a through hole between two ear pieces, and the outer tube 2 is also provided with a connecting port at a position opposite to the through hole on the bracket 1. The bottom side of the locking hook 6 extends into the outer tube 2 through the through hole and the connecting port.

[0043] A spring seat 5 is also installed in the bracket 1. The inner end of the outer cylinder 2 abuts against the spring seat 5, and the outer cylinder 2 is connected to the spring seat 5. The spring seat 5 is a short cylindrical structure. One end of the spring seat 5 is provided with an annular boss, and the annular boss abuts against the inner side of the bracket 1. The other end of the spring seat 5 is provided with a spiral groove for fixed connection with the spring 4. The spring 4 is fixed on the spring seat 5, and the spring 4 extends into the outer cylinder 2. The outer cylinder 2 mainly plays a guiding role.

[0044] The inner cylinder 3 is sleeved in the outer cylinder 2 , and one end of the inner cylinder 3 is fixed to the other end of the spring 4 .

[0045] The inner tube 3 is also a cylindrical structure, and an annular limit rod mounting boss 31, a lock hook boss 32 and a spring mounting boss 33 are sequentially arranged on the inner tube 3. Two grooves are arranged on the limit rod mounting boss 31 along the axial direction, and a limit rod 13 is respectively installed in each groove. The two limit rods 13 are symmetrically arranged at the front end of the inner tube 3. The dart body 10 is clamped in the outer tube 2 when it is in the waiting state through the two limit rods 13, so as to complete the stable placement of the dart body 10.

[0046] Specifically, the limiting rod 13 is made of elastic material, and a spiral structure is set at the root of the limiting rod 13. The connection between the limiting rod 13 and the inner tube 3 is completed through the spiral structure at the root of the limiting rod 13. The limiting rod 13 is prefabricated with an outward deflection as a whole, and an inward deflection is prefabricated at the end of the limiting rod 13.

[0047] The spring mounting boss 33 is provided with a spiral groove, and the spiral groove is used for fixed connection with the spring 4.

[0048] The lock hook boss 32 is used to cooperate with the arc surface 12 on the bottom side of the lock hook 6. Specifically, the bottom side of the lock hook 6 is provided with an arc surface 12, and the arc surface 12 extends into the inner tube 2 and contacts the lock hook boss 32. The end of the lock hook 6 is provided with a pin hole, and the axis of the arc surface 12 coincides with the axis of the pin hole. In the ready state, the contact pressure F between the inner tube 3 and the arc surface 12 of the lock hook 6 is CPointing to the axis of the pin hole, when the lock hook 6 rotates upward, the left and right positions of the inner cylinder 3 remain unchanged, and there is no need to further compress the spring 4 to do work, which reduces the required trigger force. In addition, due to the friction between the arc surface 12 of the lock hook 6 and the inner cylinder 3, the lock hook 6 will not be accidentally unlocked under the action of the elastic force of the spring 4.

[0049] The dart body 10 is installed in the outer tube 2 through a limiting rod 13. The front end of the dart body 10 is an anesthetic needle. The tail end of the dart body 10 is provided with two elastic tail wings 11. When the dart body 10 is in a state of being ready to be launched, the elastic tail wings 11 are wrapped around the tail end of the dart body 10, and are clamped by the prefabricated inward deflection at the end of the limiting rod 13 to complete the connection between the dart body 10 and the inner tube 3.

[0050] The trailing edge of the elastic tail wing 11 is a forward-swept configuration, and a spiral bend is prefabricated at the rear of the elastic tail wing 11. Through the prefabricated spiral bend at the rear of the elastic tail wing 11, the dart body 10 rotates around its own axis under the action of aerodynamic force, so that the dart body 10 can maintain a stable direction by relying on the two elastic tail wings 11.

[0051] In addition, the rotation of the dart body 10 also eliminates the yaw caused by the asymmetry of the tail structure. Therefore, the two elastic tails 11 with prefabricated bends not only reduce the number of tails to a minimum, simplify the structure, and reduce the weight, but also cleverly utilize the prefabricated bend and folded elastic force of the tail to make its flight stable, easy to install, and will not fall off accidentally.

[0052] In summary, when in use, completing the installation and launching of the dart body 10 includes the following steps: Figure 6 and Figure 7 As shown:

[0053] S1, according to the spiral bending direction of the elastic tail wing 11 of the dart body 10, the dart body is pushed inward into the outer tube 2 while rotating, and the elastic tail wing 11 will automatically fold along the prefabricated spiral deformation direction during this process;

[0054] S2, put one end of the push rod 9 from the anesthesia needle of the dart body 10 outside the dart body 10, the push rod 9 is a tubular structure, the outer diameter of the push rod 9 is smaller than the inner diameter of the outer tube 2, the inner diameter of the push rod 9 is larger than the outer diameter of the dart body 10, and a groove matching the limit rod 13 is provided at one end of the push rod 9. After the limit rod 13 is located in the groove of the push rod 9, the push rod 9 pushes the inner tube 3 inward and compresses the spring 4. In this process, the inner tube 3 and the spring 4 will push the lock hook 6 open, and at the same time, the inner wall of the outer tube 2 causes the end of the limit rod 13 to be deflected inward, thereby clamping the dart tail 11;

[0055] S3, when the inner tube 3 moves to the locking position, the lock hook 6 rotates downward under the action of gravity and clamps the lock hook boss 32 outside the inner tube 3, thereby locking the inner tube 3, and then the push rod 9 is taken out, and the dart body 10 is installed;

[0056] S4. After the dart launching device in this embodiment is carried by the drone to the predetermined position, a trigger signal is provided to the steering gear 7 by remote control, and the steering gear 7 drives the lever 8 to rotate upward, and pulls the handle of the lock hook 6 upward, and the lock hook 6 is then unlocked, and the spring 4 pushes the dart body 10 to move outward. When the dart body 10 moves to a position close to being separated from the outer tube 2, the limit rod 13 moves to the outside of the outer tube 2 and pops open, releasing the limit effect on the elastic tail 11, and the dart body 10 flies out, completing the launching operation of the dart body 10. There is no high-pressure gas explosion sound during the launching process, and no high-speed collision occurs between different components, so the launching noise is small. After the dart body flies out, the inner tube 3 and the spring 4 still have a certain speed and kinetic energy. At this time, the spring 4 will produce a certain stretch under the action of the inertial force, which provides buffering and deceleration for the inner tube 3 and the spring 4 on the one hand, and offsets the recoil force after launching on the other hand, thereby reducing the adverse effect on the attitude of the drone.

[0057] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0058] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A dart launching device mounted on a drone, characterized in that: The dart comprises a bracket (1), an outer tube (2), an inner tube (3), a spring (4) and a dart body (10); the bracket (1) is a cylindrical structure, and a steering gear (7) is fixed on the outer side of the bracket (1) near the top end, the output shaft of the steering gear (7) is connected to a lever (8), and the outer side of the bracket (1) is also rotatably connected to a locking hook (6); The outer cylinder (2) is also a cylindrical structure, and the outer cylinder (2) is installed in the bracket (1). A spring seat (5) is also installed in the bracket (1), the inner side end of the outer cylinder (2) abuts against the spring seat (5), and the outer cylinder (2) is connected to the spring seat (5); A spring (4) is fixed on the spring seat (5), the inner tube (3) is sleeved in the outer tube (2), and one end of the inner tube (3) is fixed to the other end of the spring (4); The inner tube (3) is provided with a locking hook boss (32), the locking hook boss (32) and the locking hook (6) are used in conjunction with each other, a limiting rod (13) is fixed to the other end of the inner tube (3), and the dart body (10) is installed in the outer tube (2) through the limiting rod (13); The bracket (1) is fixed with two ear pieces for rotatably connecting the lock hook (6); a through hole is formed on the bracket (1) between the two ear pieces; a communication opening is also formed on the outer tube (2) at a position opposite to the through hole on the bracket (1); the bottom side of the lock hook (6) extends into the outer tube (2) through the through hole and the communication opening; A handle is provided at one end of the lock hook (6), and the handle cooperates with the lever (8) for use; a circular arc surface (12) is provided on the bottom side of the lock hook (6), and the circular arc surface (12) extends into the outer cylinder (2); The inner cylinder (3) is also a cylindrical structure, and an annular limit rod mounting boss (31), a lock hook boss (32) and a spring mounting boss (33) are sequentially arranged on the inner cylinder (3), and two grooves are arranged on the limit rod mounting boss (31) along the axial direction, and a limit rod (13) is respectively installed in each groove; The spring mounting boss (33) is provided with a spiral groove, and the spiral groove is used for fixed connection with the spring (4); The locking hook boss (32) is used to cooperate with the arc surface (12) on the bottom side of the locking hook (6).

2. A dart launching device mounted on a drone according to claim 1, characterized in that: The two limiting rods (13) are symmetrically arranged at the front end of the inner cylinder (3).

3. A dart launching device mounted on a drone according to claim 1, characterized in that: The spring seat (5) is a short cylindrical structure, one end of the spring seat (5) is provided with an annular boss, the annular boss abuts against the inner side of the bracket (1), and the other end of the spring seat (5) is provided with a spiral groove for fixed connection with the spring (4).

4. A dart launching device mounted on a drone according to claim 1, characterized in that: The limiting rod (13) is made of elastic material, and a spiral structure is provided at the root of the limiting rod (13). The connection between the limiting rod (13) and the inner cylinder (3) is completed through the spiral structure at the root of the limiting rod (13).

5. The dart launching device mounted on a drone according to claim 1, characterized in that: The entire rod body of the limiting rod (13) is prefabricated with an outward deflection, and the end of the rod body of the limiting rod (13) is prefabricated with an inward deflection.

6. A dart launching device mounted on a drone according to claim 1, characterized in that: The tail end of the dart body (10) is provided with two elastic tail wings (11); when the dart body (10) is in a state of being ready to be launched, the elastic tail wings (11) are wound around the tail end of the dart body (10).

7. A dart launching device mounted on a drone according to claim 6, characterized in that: The rear edge of the elastic tail wing (11) is of a forward-swept configuration, and a spiral bend is prefabricated at the rear of the elastic tail wing (11).

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