Self-locking device for thrust covering cap of unmanned aerial vehicle

Abstract

The utility model discloses a self-locking device for a thrust covering cap of an unmanned aerial vehicle, which comprises a base fixedly connected with a large covering cap, a locking plate fixedly connected with a small covering cap, a movable bolt matched with the base and a cover plate detachably fixed with the base, the movable plug pin penetrates through an area between the first boss and the second boss and can stretch out and retract in the width direction of the base, a torsional spring is arranged on the first boss and connected with the surface of the movable plug pin, a compression spring is arranged on the second boss, and the second boss is movably embedded into the movable plug pin. The elastic potential energy of the torsion spring and the spring is utilized, the movable plug pin extends out through the button, and the plug pin is matched with the locking plate to achieve the locking function.

Description

Technical Field

[0001] The utility model belongs to the technical field of unmanned aerial vehicles (UAVs), and relates to aspects related to thrust port covers of UAVs, in particular to a UAV thrust port cover self-locking device which limits the flipping of a small port cover to maintain the aerodynamic shape of a target drone. Background Art

[0002] Currently, target drones are typically launched with rocket propulsion. To maintain the aerodynamic shape, the force transmission point between the rocket and the aircraft is typically located inside the aircraft, necessitating a flap near the thrust point. Before launch, the flap opens to connect the rocket to the thrust point. After launch, the rocket drops off, and the flap automatically closes. Currently, most thrust point flaps feature a larger flap embedded within a smaller flap. The smaller flap is connected to the larger flap via a spring hinge. After the rocket drops off, the smaller flap automatically flips closed due to the spring torque.

[0003] However, for small, low-speed drones, the small flap is subject to relatively little aerodynamic force, and can be locked securely by the torque of the spring hinge. Alternatively, a magnet can be installed on the other side of the flap, allowing it to be locked securely by the combination of the torque of the spring hinge and the suction of the magnet. However, for medium-sized or large, high-speed drones, the flap's area increases, and so does the aerodynamic force. Given the limited cabin space, the spring hinge's specifications cannot be increased indefinitely. In this case, the spring hinge's torque is insufficient to secure the flap securely, and the flap can flip under the aerodynamic suction, disrupting the drone's aerodynamic shape and affecting its flight performance. Utility Model Content

[0004] In order to solve the above problems, the utility model provides a self-locking device for the thrust cover of a UAV. The utility model realizes the design of the cover self-locking device through parts such as a pin, a spring, a base, and a locking plate. In addition, by arranging the cover self-locking device on the other side of the spring hinge of the thrust point cover, the function of flipping, closing and locking the small cover after the rocket falls off is realized.

[0005] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0006] The utility model provides a self-locking device for a thrust port cover of a drone, wherein the self-locking device comprises a base fixedly connected to the large port cover, a locking plate fixedly connected to the small port cover, a movable latch matched with the base, and a cover plate detachably fixed to the base; a first boss and a second boss are provided inside the base; the movable latch passes through the area between the first boss and the second boss and can be extended and retracted along the width direction of the base; a torsion spring is provided on the first boss and the torsion spring is connected to the surface of the movable latch; a compression spring is provided on the second boss and the second boss can be movably embedded in the movable latch.

[0007] As a preferred solution of the present invention, an insertion hole is provided on the movable latch, one end of the torsion spring abuts against the side wall surface of the base, and the other end is inserted into the insertion hole of the movable latch.

[0008] As a preferred solution of the present invention, the movable latch is provided with a groove near the second boss, and the shape of the groove matches that of the second boss.

[0009] As a preferred solution of the present invention, a rectangular hole is provided on the locking plate, and the movable latch matches the rectangular hole.

[0010] As a preferred solution of the present invention, the second boss can move up and down along the vertical direction of the base under the action of the compression spring.

[0011] As a preferred solution of the present invention, the second protrusion extends out of the base so that the small mouth cover sinks to achieve opening.

[0012] As a preferred solution of the present invention, the second protrusion retracts under the force of the small mouth cover, and the movable latch extends out and is fixed to the locking plate to achieve closing.

[0013] As a preferred solution of the present invention, the base and the large-mouth cover are fixed by a second screw, and the locking piece and the small-mouth cover are fixed by a second screw.

[0014] As a preferred solution of the present invention, the cover plate and the base are fixed by screws.

[0015] Compared with the prior art, the present invention has the following beneficial effects:

[0016] 1) The utility model utilizes the elastic potential energy of the torsion spring and the spring to extend the movable latch through a button, and the latch cooperates with the lock plate to realize the locking function.

[0017] 2) The utility model realizes the limitation of the turning of the small opening cover to maintain the aerodynamic shape of the target drone.

[0018] 3) The utility model has a simple structure and a small size, and realizes the self-locking function of the small-mouth cover in a limited space. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative labor.

[0020] Figure 1 It is a schematic diagram of the closed state of the utility model.

[0021] Figure 2 It is a schematic diagram of the open state of the utility model.

[0022] Figure 3 It is a schematic diagram of the utility model in a closed state after being assembled with the thrust port cover.

[0023] Figure 4 It is a schematic diagram of the utility model in the open state after being assembled with the thrust cover.

[0024] 1. Locking plate; 10. Large cover; 11. Rectangular hole; 2. Base; 20. Small cover; 3. Second boss; 30. Self-locking device; 4. Movable latch; 40. Second screw; 41. Insertion hole; 5. Torsion spring; 6. Compression spring; 7. Cover; 8. Screw; 9. First boss. DETAILED DESCRIPTION

[0025] In order to further understand the content of the present invention, the present invention is described in detail with reference to the accompanying drawings and embodiments.

[0026] The present application will be further described in detail below with reference to the accompanying drawings and examples. It should be understood that the specific examples described herein are intended solely to illustrate the relevant utility model and are not intended to limit the utility model. It should also be noted that, for ease of description, only the relevant portions of the utility model are shown in the accompanying drawings. Terms such as "first," "second," and so on, used in the present utility model are provided for the convenience of describing the technical solution of the present utility model and do not have a specific limiting effect. They are general references and do not constitute a limitation on the technical solution of the present utility model. It should be noted that, unless conflicting, the embodiments and features within the embodiments of the present application may be combined with one another. In the description of the present utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicating positions or locations, are based on the positions or locations shown in the accompanying drawings and are intended solely to facilitate the description of the present utility model and simplify the description. They do not indicate or imply that the devices or components referred to must have a specific orientation, be constructed, or operate in a specific orientation. Therefore, they should not be construed as limiting the present utility model. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance. Unless otherwise expressly specified and limited, the terms "installed", "connected" and "connected" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, or it can be a communication between the internal parts of two components. For those of ordinary skill in the art, the specific meanings of the above terms in this utility model can be understood according to the specific circumstances. Multiple technical solutions in the same embodiment, as well as multiple technical solutions in different embodiments, can be arranged and combined to form new technical solutions that do not contain contradictions or conflicts, and all of these are within the scope of protection claimed by this utility model.

[0027] Example 1

[0028] See also Figure 1 and Figure 2 The utility model provides a self-locking device for the thrust port cover of an unmanned aerial vehicle. The self-locking device 30 includes a base 2 fixedly connected to the large port cover 10, a locking piece 1 fixedly connected to the small port cover 20, a movable latch 4 matched with the base 2, and a cover plate 7 detachably fixed to the base 2. A first boss 9 and a second boss 3 are provided inside the base 2. The movable latch 4 passes through the area between the first boss 9 and the second boss 3 and can be extended and retracted along the width direction of the base 2. A torsion spring 5 is provided on the first boss 9, and the torsion spring 5 is connected to the surface of the movable latch 4. A compression spring 6 is provided on the second boss 3, and the second boss 3 can be movably embedded in the movable latch 4.

[0029] An insertion hole 41 is provided on the movable latch 4 , one end of the torsion spring 5 abuts against the side wall of the base 2 , and the other end is inserted into the insertion hole 41 of the movable latch 4 .

[0030] The movable latch 4 is provided with a groove (not shown in the figure) near the second boss 3 , and the shape of the groove matches that of the second boss 3 .

[0031] The locking piece 1 is provided with a rectangular hole 11 , and the movable latch 4 matches the rectangular hole 11 .

[0032] See also Figure 1 , Figure 2 , Figure 3 and Figure 4 The movable latch 4 is inserted into the rectangular hole of the base 2, the torsion spring 5 is placed on the first boss 9 of the base 2, one end is inserted into the insertion hole 41 of the movable latch 4, and the other end is close to the side wall of the base 2, the second boss 3 is inserted into the circular hole of the base 2, the compression spring 6 is inserted into the hole of the second boss 3, and the cover plate 7 is connected to the base 2 by screws 8.

[0033] When the device is in the open state, the movable latch 4 retracts, the torsion spring 5 is compressed, and under the elastic force of the compression spring 6, the boss on the second boss 3 engages with the groove on the movable latch 4, locking the movable latch 4. At this time, the second boss 3 extends out of the base 2. Pressing the second boss 3 causes the boss on the second boss 3 to disengage from the groove on the movable latch 4. Under the torsion force of the torsion spring 6, the movable latch 4 extends into the rectangular hole 11 of the locking plate 1, locking the locking plate 1.

[0034] like Figure 3 and Figure 4 As shown, the base 2 and the locking plate 2 of the self-locking device are respectively assembled to the thrust large-mouth cover 10 and the small-mouth cover 20 by the second screw 40. The locking plate 1 is connected to the small-mouth cover 20 as a whole, and the small-mouth cover 20 is locked by locking the locking plate 1.

[0035] When the self-locking device is in the open state, the movable latch 4 retracts, and the second boss 3 extends and protrudes above the recessed surface of the large cover 10 and the small cover 20. When the small cover 20 is closed, the second boss 3 is impacted by the inner surface of the small cover 20 and retracts, and the movable latch 4 extends into the rectangular hole 11 of the locking plate 1, locking the small cover 20.

[0036] The above is a schematic description of the present invention and its embodiments, which is not restrictive. The drawings show only one embodiment of the present invention, and the actual structure is not limited thereto. Therefore, if a person skilled in the art is inspired by this and, without departing from the inventive purpose of the present invention, designs a structure and embodiment similar to the technical solution without inventiveness, they shall fall within the scope of protection of the present invention.

Claims

1. A self-locking device for the thrust port cover of an unmanned aerial vehicle, characterized in that: The self-locking device includes a base fixedly connected to the large mouth cover, a locking plate fixedly connected to the small mouth cover, a movable latch matching the base, and a cover plate detachably fixed to the base. A first boss and a second boss are provided inside the base. The movable latch passes through the area between the first boss and the second boss and can be extended and retracted along the width direction of the base. A torsion spring is provided on the first boss, and the torsion spring is connected to the surface of the movable latch. A compression spring is provided on the second boss, and the second boss can be movably embedded in the movable latch.

2. The UAV thrust port cover self-locking device according to claim 1, characterized in that: An insertion hole is provided on the movable latch, one end of the torsion spring abuts against the side wall surface of the base, and the other end is inserted into the insertion hole of the movable latch.

3. The self-locking device for the thrust port cover of a UAV according to claim 1, characterized in that: The movable latch is provided with a groove near the second boss, and the shape of the groove matches that of the second boss.

4. The UAV thrust port cover self-locking device according to claim 1, characterized in that: The locking plate is provided with a rectangular hole, and the movable latch matches the rectangular hole.

5. A UAV thrust cover self-locking device according to any one of claims 1 to 4, characterized in that: The second boss can move up and down along the vertical direction of the base under the action of the compression spring.

6. The UAV thrust port cover self-locking device according to claim 5, characterized in that: The second protrusion extends out of the base so that the small opening cover sinks to open.

7. The UAV thrust port cover self-locking device according to claim 5, characterized in that: The second protrusion retracts under the force of the small mouth cover, and the movable latch extends out and is fixed with the locking plate to achieve closing.

8. The UAV thrust port cover self-locking device according to claim 1, characterized in that: The base and the large cover are fixed by a second screw, and the locking piece and the small cover are fixed by a second screw.

9. The UAV thrust port cover self-locking device according to claim 1, characterized in that: The cover plate is fixed to the base by screws.

Images