Empennage connecting structure and unmanned aerial vehicle

Abstract

The utility model provides an empennage connecting structure and an unmanned aerial vehicle, the empennage connecting structure comprises an airframe connecting piece, an empennage tube and a fastener, the airframe connecting piece comprises a clamp part, and the clamp part is provided with a clamping opening. And the empennage pipe is matched with the hoop part. The fastener comprises a handle part and a fastening part, the fastening part is connected with the hoop parts on the two sides of the clamping opening, and the handle part is connected with the fastening part. Wherein the handle part has a first state in which the clamping opening is contracted to clamp the empennage pipe and a second state in which the clamping opening is expanded to release the empennage pipe. In the empennage connecting structure, the hoop part is matched with the fastener to form a hoop connecting structure, so that gapless clamping and fixing between the airframe connecting piece and the empennage pipe are realized, the connection stability between the airframe connecting piece and the empennage pipe is ensured, and the connection looseness of the empennage pipe is prevented. And meanwhile, due to the application of the handle part, tool-free quick disassembly and assembly connection can be realized, the dependence on tools is reduced, different application scenes can be better adapted, and the disassembly and assembly efficiency is improved.

Description

Technical Field

[0001] This utility model relates to the field of unmanned aerial vehicle (UAV) design, specifically to a tail fin connection structure and a UAV. Background Technology

[0002] With the development of drone technology, drones are being used more and more widely, especially compound-wing drones. Due to their vertical takeoff and landing capabilities, similar to rotary-wing drones, they are widely used in agriculture, surveying, logistics, security, power, environmental protection, film and television, scientific research, and education. Some existing compound-wing drones employ modular designs to reduce space occupation, lower transportation costs, or meet the needs of missions requiring frequent component replacement and rapid response. Examples include the modular design of the tail fin and tail support structure, or the modular design of the fuselage and tail fin structure. However, the complex modular connection structures of existing drones result in lengthy assembly and disassembly times, which does not align with the development trend of improving drone operational efficiency in certain application areas. Utility Model Content

[0003] In view of the problems existing in the prior art, the present invention provides a tail fin connection structure and a drone to improve the technical problems of complex design and long disassembly and assembly time of the existing drone assembly and connection structure.

[0004] To achieve the above and other related objectives, the first aspect of this utility model provides a tail fin connection structure, which includes a fuselage connector, a tail fin tube, and fasteners. The fuselage connector is used for fixed connection with the fuselage connector of a UAV. The fuselage connector includes a clamp portion with a clamping opening. The tail fin tube is adapted to the clamp portion, with one end of the tail fin tube inserted into the clamp portion. The fastener includes a handle portion and a fastening portion, the fastening portion connecting the clamp portions on both sides of the clamping opening, and the handle portion connecting the fastening portion. The handle portion has a first state of retracting the clamping opening to clamp the tail fin tube, and a second state of expanding the clamping opening to release the tail fin tube.

[0005] In one embodiment of the tail wing connection structure of this utility model, the fastening part includes a connected smooth rod section and a threaded section, the handle part is disposed on the smooth rod section, and the threaded section passes through the clamp and is threadedly connected to the clamp part.

[0006] In one embodiment of the tail wing connection structure of this utility model, the fastener is a cam handle.

[0007] In one embodiment of the tail wing connection structure of this utility model, the tail wing connection structure further includes a limiting member, which includes a knob and a stop bar; the knob is disposed on the outside of the clamp part, the stop bar is fixedly connected to the knob, a positioning hole adapted to the stop bar is opened on the tail wing tube, and the stop bar has a first position that extends through the side wall of the clamp part to stop the axial displacement of the tail wing tube, and a second position that retracts to allow the axial displacement of the tail wing tube.

[0008] In one embodiment of the tail wing connection structure of this utility model, the stop rod is threadedly connected to the clamp part, and in the first position, the stop rod is inserted into the positioning hole.

[0009] In one embodiment of the tail wing connection structure of this utility model, the limiting member is a knob plunger.

[0010] In one embodiment of the tail wing connection structure of this utility model, a boss is provided on the periphery of the tail wing tube, and in the first position, the boss abuts against the clamp part.

[0011] In one embodiment of the tail wing connection structure of this utility model, there are multiple limiting members, and the multiple limiting members are arranged at intervals along the circumference of the clamp portion.

[0012] In one embodiment of the tail wing connection structure of this utility model, weight reduction holes are also provided on the fuselage connector.

[0013] A second aspect of this utility model also provides an unmanned aerial vehicle (UAV) comprising the tail fin connection structure described in any of the preceding claims.

[0014] This utility model provides a tail fin connection structure and a drone. The tail fin connection structure utilizes a clamp and fasteners to form a clamp connection structure, achieving gapless clamping and fixing between the fuselage connector and the tail fin tube. Simultaneously, the clamp connection structure provides a certain preload, and the force is directly transmitted between the clamp and the tail fin tube, ensuring the connection stability between the fuselage connector and the tail fin tube even in high-vibration operating environments, preventing loosening of the tail fin tube connection. Furthermore, the application of a handle allows for tool-free quick assembly and disassembly, reducing reliance on tools, better adapting to different application scenarios, simplifying the structural design, reducing assembly and disassembly time, and improving efficiency. Attached Figure Description

[0015] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other embodiments can be obtained based on these drawings without creative effort.

[0016] Figure 1 This is an exploded view of one embodiment of the tail fin connection structure of this utility model. Figure 1 ;

[0017] Figure 2 This is an exploded view of one embodiment of the tail fin connection structure of this utility model. Figure 2 ;

[0018] Figure 3 This is a schematic diagram of the fastener connection structure in one embodiment of the tail fin connection structure of this utility model;

[0019] Figure 4 This is a schematic diagram of the fastener connection in another embodiment of the tail fin connection structure of this utility model;

[0020] Figure 5 A cross-sectional view of the connection state in one embodiment of the tail fin connection structure of this utility model. Figure 1 ;

[0021] Figure 6 A cross-sectional view of the connection state in one embodiment of the tail fin connection structure of this utility model. Figure 2 .

[0022] Component designation explanation:

[0023] 100. Airframe connector; 110. Clamp; 111. Grip; 112. First clamp plate; 113. Second clamp plate; 120. Tail support connector; 130. Weight reduction hole; 200. Tail fin tube; 210. Positioning hole; 220. Boss; 300. Fastener; 310. Handle; 320. Fastening part; 321. Smooth rod section; 322. Threaded section; 400. Limiting component; 410. Knob; 420. Stop bar; 500. Airframe connector; 600. Rotor drive device. Detailed Implementation

[0024] The following specific examples illustrate the implementation of this utility model. Those skilled in the art can easily understand other advantages and effects of this utility model from the content disclosed in this specification. This utility model can also be implemented or applied through other different specific embodiments, and various details in this specification can also be modified or changed based on different viewpoints and applications without departing from the spirit of this utility model. It should be noted that, in the absence of conflict, the following embodiments and features in the embodiments can be combined with each other. It should also be understood that the terminology used in the embodiments of this utility model is for describing specific implementation schemes and not for limiting the scope of protection of this utility model. Test methods in the following embodiments that do not specify specific conditions are generally performed under conventional conditions or according to the conditions recommended by the respective manufacturers.

[0025] When numerical ranges are given in the embodiments, it should be understood that, unless otherwise specified in this invention, both endpoints of each numerical range and any value between the two endpoints may be selected. Unless otherwise defined, all technical and scientific terms used in this invention, as well as the prior art known to those skilled in the art and the description of this invention, may be implemented using any prior art methods, equipment, and materials similar to or equivalent to those in the embodiments of this invention.

[0026] It should be noted that the terms such as "upper", "lower", "left", "right", "middle" and "one" used in this specification are only for clarity of description and are not intended to limit the scope of implementation of this utility model. Changes or adjustments to their relative relationships, without substantially altering the technical content, should also be considered as within the scope of implementation of this utility model.

[0027] To address the technical issues of complex assembly and connection structures and lengthy disassembly / reassembly times in existing drones, this invention provides a tail fin connection structure and a drone. This tail fin connection structure ensures the stability of the connection between the fuselage connectors and the tail fin tube, preventing loosening of the tail fin tube connection. Simultaneously, it enables tool-free rapid assembly and disassembly, reducing reliance on tools, better adapting to different application scenarios, and improving assembly and disassembly efficiency.

[0028] Please see Figures 1 to 6 The first aspect of this utility model provides a tail fin connection structure, which includes a body connector 100 for fixed connection with a body connection portion 500 of a drone. This tail fin connection structure can be applied to compound-wing drones, fixed-wing drones, or rotary-wing drones, as long as the tail fin structure of the drone model has a tail fin tube 200 that needs to be assembled and connected to the body connection portion 500. Specifically, in this embodiment, the tail fin connection structure is applied to a compound-wing drone. The body connection portion 500 can be the fuselage structure of the drone or the tail support structure of the drone, but is not limited thereto, and can be determined according to the actual installation position of the tail fin structure. Specifically, in this embodiment, the body connection portion 500 is the tail support structure of a compound-wing drone, that is, the tail fin tube 200 of the tail fin structure of the compound-wing drone is assembled and connected to the tail support rod of the tail support structure. The body connector 100 is fixedly connected to one end of the tail support rod.

[0029] Please see Figure 1 and Figure 2The fuselage connector 100 includes a clamp portion 110 and a tail support connector 120. The structure of the tail support connector 120 is not limited; it can be adapted to the structure of the tail support rod, satisfying any suitable structural type for fixed connection with the tail support rod. The method of fixed connection between the tail support connector 120 and the tail support rod is not limited, for example, it can be riveting, welding, bonding, screw connection, etc., but is not limited thereto. Specifically, in this embodiment, the tail support rod is a square tube. The square tube has more planar area, facilitating connection with the wings of the compound wing UAV, or installation with rotor drive devices such as motors and antennas at the end of the tail support rod. Simultaneously, the square tube has good torsional resistance. In this embodiment, the square tail support connector 120 also serves as a mounting base for the rotor drive device 600. The rotor drive device 600 is fixedly installed on the upper part of the tail support connector 120. The tail fin tube 200 is a circular tube, and pre-made tube materials can be used. The fuselage connector 100 is a square-to-round docking structure, which enables the assembly and connection of the tail support structure and the tail wing structure of the compound wing UAV.

[0030] The tail support connector 120 and the clamping part 110 can be an integral structure or separate structures. Specifically, in this embodiment, the tail support connector 120 and the clamping part 110 are an integral structure, with the clamping part 110 located on the side of the tail support connector 120. The clamping part 110 is used to connect with the tail fin tube 200 of the tail fin structure. The structure of the clamping part 110 is adapted to the structure of the tail fin tube 200, and one end of the tail fin tube 200 is inserted into the clamping part 110. Along the insertion direction between the tail fin tube 200 and the clamping part 110, a clamping opening 111 is provided on the wall of the clamping part 110, and along the X-axis, one end of the clamping opening 111 extends to the end of the clamping part 110, and the other end extends to the tail support connector 120. The clamp 111 can contract or expand under the control of the fastener 300, thereby controlling the clamping cavity of the clamping part 110 to shrink or expand, so as to clamp or release the tail fin tube 200.

[0031] Please see Figure 3 and Figure 4The fastener 300 includes a handle portion 310 and a fastening portion 320, with the fastening portion 320 connecting the clamp portions 110 on both sides of the clamp 111. The handle portion 310 is connected to the fastening portion 320. The handle portion 310 has a first state of contracting the clamp 111 to clamp the tail fin tube 200, and a second state of expanding the clamp 111 to release the tail fin tube 200. Specifically, along the Y-axis, the clamp portion 110 located on one side of the clamp 111 is designated as the first clamp plate 112, and the clamp portion 110 located on the other side of the clamp 111 is designated as the second clamp plate 113. The first clamp plate 112 and the second clamp plate 113 are symmetrically arranged with respect to the Y-axis, and the mating ends of the first clamp plate 112 and the second clamp plate 113 form the clamp 111. The fastening part 320 connects the first clamping plate 112 and the second clamping plate 113 at the clamp 111. The handle part 310 is any suitable type of structure that allows the operator to manually operate and control the fastening part 320 without tools. The fastening part 320 is any suitable type of structure that allows the clamp 111 to be contracted or released under the control of the handle part 310. For example, the fastener 300 can be a screw with a handle part 310, or a cam handle or other connector obtained through common commercial means. When the tail fin structure needs to be installed with the fuselage connector 100, the handle part 310 is manually operated to control the fastening part 320 to contract the clamp 111 to the first state. In the first state, the clamping cavity space formed by the first clamping plate 112 and the second clamping plate 113 is reduced, and the first clamping plate 112 and the second clamping plate 113 clamp the tail fin tube 200. When it is necessary to disassemble the tail fin structure from the fuselage connector 100, the manual operation handle 310 controls the fastening part 320 to expand the clamp 111 to the second state. In the second state, the clamping cavity space enclosed by the first hoop 112 and the second hoop 113 increases, and the first hoop 112 and the second hoop 113 no longer hold the tail fin tube 200 tightly, which facilitates the disassembly of the tail fin tube 200 from the fuselage connector 100.

[0032] In this tail fin connection structure, the clamp part 110 and the fastener 300 cooperate to form a clamp connection structure, achieving gapless clamping and fixing between the fuselage connector 100 and the tail fin tube 200. Simultaneously, the clamp connection structure can provide a certain preload, and the clamp part 110 directly transmits force to the tail fin tube 200, ensuring the connection stability between the fuselage connector 100 and the tail fin tube 200 even in high-vibration operating environments, preventing the tail fin tube 200 from loosening. Furthermore, the application of the handle part 310 enables tool-free quick assembly and disassembly, reducing reliance on tools, better adapting to different application scenarios, simplifying the connection design between the fuselage connector 500 and the tail fin structure, reducing assembly and disassembly time, and improving assembly and disassembly efficiency.

[0033] Please see Figure 4In one embodiment of the tail wing connection structure of this utility model, the fastener 300 adopts a screw locking structure for the handle portion 310. The fastening portion 320 includes a smooth rod section 321 and a threaded section 322 connected together. The handle portion 310 is disposed on the smooth rod section 321, and the threaded section 322 passes through the clamp 111 and is threadedly connected to the clamp portion 110. Specifically, in this embodiment, a connecting through hole is provided on the first clamp plate 112 located at the clamp 111, and a threaded hole is provided on the second clamp plate 113 located at the clamp 111. The smooth rod section 321 passes through the connecting through hole on the first clamp plate 112. The threaded section 322 passes through the connecting through hole and the clamp 111 and is threadedly connected to the threaded hole on the second clamp plate 113. The handle portion 310 is installed at the end of the smooth rod section 321. Twisting the handle portion 310 controls the rotation of the fastening portion 320, and the threaded section 322 screws in and out of the threaded hole in the second clamp plate 113, realizing the contraction and expansion of the clamp 111.

[0034] Please see Figure 3 In one embodiment of the tail fin connection structure of this utility model, the fastener 300 adopts a cam handle, i.e., a quick-press screw. When it is necessary to connect and fix the tail fin tube 200, the handle part 310 of the cam handle is rotated, and the cam of the handle part 310 causes the clamp 111 to contract, that is, the first clamp plate 112 and the second clamp plate 113 press and fix the tail fin tube 200. Conversely, the handle part 310 of the cam handle is rotated in the opposite direction to expand the clamp 111 and release the tail fin tube 200. The cam handle can be obtained through common commercial means, and the structure and functional principle of the cam handle are well known in the industry, so they will not be described in detail here. The cam handle allows for direct observation of whether the clamp part 110 has achieved locking and fixing of the tail fin tube 200, reducing missed operations by personnel, and at the same time, it is easy to operate and improves the efficiency of disassembly and assembly.

[0035] Please see Figure 3 and Figure 6In one embodiment of the tail fin connection structure of this utility model, the tail fin connection structure further includes a limiting member 400, which includes a knob 410 and a stop bar 420. The knob 410 can be any suitable type of structure that allows manual operation and control of the stop bar 420 without the aid of tools. The knob 410 is disposed on the outside of the clamp portion 110, and the stop bar 420 is fixedly connected to the knob 410. A positioning hole 210 adapted to the stop bar 420 is provided on the tail fin tube 200. The stop bar 420 has a first position where it extends through the side wall of the clamp portion 110 to stop the axial displacement of the tail fin tube 200, and a second position where it retracts to allow the axial displacement of the tail fin tube 200. Specifically, when the tail fin tube 200 is installed in the mounting position on the clamp part 110, the knob 410 controls the stop rod 420 to extend, so that one end of the stop rod 420 is inserted into the positioning hole 210. Even when the stop rod 420 is in the first position, it acts as a pin positioning structure, restricting the displacement of the tail fin tube 200 and the clamp part 110 in the X-axis. When it is necessary to disassemble the tail fin tube 200 and the clamp part 110, the knob 410 is manually operated to control the end of the stop rod 420 to be pulled out of the positioning hole 210, i.e., the stop rod 420 is in the second position, no longer interfering with the axial displacement of the tail fin tube 200. The limiting member 400 not only serves as a pin positioning structure between the clamp part 110 and the tail fin tube 200, but also as a second locking mechanism for connecting and fixing the fuselage connector 100 and the tail fin tube 200. Even if the fastener 300 fails, it can prevent the tail tube 200 from coming out of the clamp part 110, further improving the reliability of the connection between the tail tube 200 and the fuselage connector 100.

[0036] Please see Figure 6 In one embodiment of the tail wing connection structure of this utility model, the stop rod 420 is a screw rod, and a threaded through hole is formed on the wall of the clamp part 110. The stop rod 420 is threadedly connected to the threaded hole on the clamp part 110, and a positioning hole 210 is formed on the wall of the tail wing tube 200 corresponding to the threaded through hole of the clamp part 110. In the first position, the end of the stop rod 420 is inserted into the positioning hole 210. The positioning hole 210 can be a threaded hole structure adapted to the stop rod 420, or it can be a through hole, as long as it can realize the insertion and removal positioning of the stop rod 420 and the tail wing tube 200. Specifically, in this embodiment, the positioning hole 210 is a through hole, and the diameter of the positioning hole 210 is slightly larger than the diameter of the stop rod 420, so precise threaded docking positioning is not required.

[0037] In one embodiment of the tail fin connection structure of this utility model, the limiting member 400 is a rotary plunger, which can be a reset type rotary plunger or a self-locking type rotary plunger. Specifically, in this embodiment, the limiting member 400 is a self-locking type rotary plunger. When it is necessary to release the limiting member 400, the self-locking type rotary plunger does not require continuous control of the knob 410, reducing the difficulty of operation. It should be noted that the structure and working principle of the rotary plunger are well known in the industry, and the rotary plunger can be obtained through general commercial means, so it will not be described in detail here.

[0038] Please see Figure 2 and Figure 6 In one embodiment of the tail fin connection structure of this utility model, a boss 220 is also provided on the periphery of the tail fin tube 200, and in the first position, the boss 220 abuts against the clamping part 110. The boss 220 can be a protrusion fixed to the surface of the tail fin tube 200 by bonding or welding, or it can be a screw threaded through the wall of the tail fin tube 200. Specifically, in this embodiment, during the insertion of the tail fin tube 200 into the clamping part 110, in order to improve the accuracy of the assembly position, the limiting member 400 is used for limiting and locking. When the boss 220 on the outer side wall of the tail fin tube 200 abuts against the side wall of the clamp part 110, after the fastener 300 is locked, the positioning hole 210 and the stop bar 420 are matched. The knob 410 controls the stop bar 420 to be inserted into the positioning hole 210, thus completing the pin positioning connection between the limiting part 400 and the clamp part 110 and the tail fin tube 200, reducing the difficulty of pin positioning of the limiting part 400 and improving assembly efficiency.

[0039] In one embodiment of the tail wing connection structure of this utility model, the number of limiting members 400 can be one or more. Multiple limiting members 400 are arranged at intervals along the circumference of the clamp portion 110. The pin positioning structure formed by multiple limiting members 400 can further reduce the probability that the tail wing tube 200 will come out of the clamp portion 110 in the event of failure of the fastener 300.

[0040] Please see Figure 1 and Figure 2 In one embodiment of the tail fin connection structure of this utility model, a weight reduction hole 130 is also provided on the fuselage connector 100. The weight reduction hole 130 can be provided on the clamp part 110 or on the tail support connector 120, as long as the overall weight of the fuselage connector 100 is reduced while satisfying the structural strength of the fuselage connector 100, thereby reducing the overall weight of the UAV. Specifically, in this embodiment, the weight reduction hole 130 is provided on the tail support connector 120.

[0041] The second aspect of this utility model also provides an unmanned aerial vehicle (UAV) including the tail fin connection structure described in any of the above embodiments. It should be noted that the UAV of this utility model may also include conventional structures and system modules of existing UAVs such as a power system, control system, fuselage, communication system, rotor system, avionics system, and landing gear, but is not limited thereto, and will not be described in detail here.

[0042] In this utility model, a tail fin connection structure and a drone are disclosed. The tail fin connection structure utilizes a clamping part and fasteners to form a clamping connection structure, achieving gapless clamping and fixing between the fuselage connector and the tail fin tube. Simultaneously, the clamping connection structure provides a certain preload, and the force is directly transmitted between the clamping part and the tail fin tube, ensuring the connection stability between the fuselage connector and the tail fin tube even in high-vibration operating environments, preventing loosening of the tail fin tube connection. Furthermore, the application of a handle allows for tool-free quick assembly and disassembly, reducing reliance on tools and better adapting to different application scenarios. This simplifies the structural design while reducing assembly and disassembly time and improving efficiency. This addresses the technical problems of complex design and long assembly / disassembly times in existing drone assembly and connection structures. Therefore, this utility model effectively overcomes some practical problems in the prior art, thus possessing high utilization value and practical significance.

[0043] The above embodiments are merely illustrative of the principles and effects of this utility model and are not intended to limit the scope of this utility model. Any person skilled in the art can modify or alter the above embodiments without departing from the spirit and scope of this utility model. Therefore, all equivalent modifications or alterations made by those skilled in the art without departing from the spirit and technical concept disclosed in this utility model should still be covered by the claims of this utility model.

Claims

1. A tail wing connecting structure characterized by comprising: The tail wing connecting structure comprises: a body connecting piece for fixed connection with a body connecting part of a UAV; the body connecting piece comprises a clamp part having a clamping opening; a tail wing pipe matched with the clamp part; one end of the tail wing pipe is inserted into the clamp part; a fastener comprising a handle part and a fastening part, the fastening part connecting the clamp part on both sides of the clamping opening; the handle part is connected with the fastening part; wherein the handle part has a first state of contracting the clamping opening to clamp the tail wing pipe, and a second state of expanding the clamping opening to release the tail wing pipe.

2. The tail wing connection structure according to claim 1, characterized by The fastening part comprises a light rod section and a threaded section connected with each other, the handle part is arranged on the light rod section, and the threaded section is threadedly connected with the clamp part through the clamping opening.

3. The tail wing connection structure according to claim 1, characterized by The fastener adopts a cam handle.

4. The tail wing connection structure according to claim 1, characterized by The tail wing connecting structure further comprises a limiting piece, the limiting piece comprises a knob and a stopper rod; the knob is arranged outside the clamp part, the stopper rod is fixedly connected with the knob, a positioning hole matched with the stopper rod is arranged on the tail wing pipe, the stopper rod has a first position of extending out of the side wall of the clamp part to stop the axial displacement of the tail wing pipe, and a second position of retracting to avoid the axial displacement of the tail wing pipe.

5. The tail wing connection structure according to claim 4, characterized by The stopper rod is threadedly connected with the clamp part, and in the first position, the stopper rod is inserted into the positioning hole.

6. The tail wing connection structure according to claim 4, characterized by The limiting piece adopts a knob plunger.

7. The tail wing connection structure according to claim 4, characterized by The tail wing pipe is further provided with a boss, and in the first position, the boss abuts against the clamp part.

8. The tail wing connection structure according to claim 4, characterized by The number of the limiting pieces is multiple, and the multiple limiting pieces are arranged along the circumference of the clamp part.

9. The tail wing connection structure according to claim 1, characterized by A weight-reducing hole is further arranged on the body connecting piece.

10. A drone, characterized in that, The tail wing connecting structure comprises any one of claims 1 to 9. The tail wing connecting structure comprises any one of claims 1 to 9.

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