Mortise and tenon joint structure, unmanned aerial vehicle framework and unmanned aerial vehicle

Abstract

The utility model provides a tenon-and-mortise connection structure, unmanned aerial vehicle skeleton and unmanned aerial vehicle, the tenon-and-mortise connection structure comprises a first skeleton, a second skeleton and a fastener, the first skeleton comprises a through hole, and the second skeleton and the first skeleton are inserted through the tenon-and-mortise structure. The fastener comprises a stopping part and a first connecting part, the first connecting part penetrates through the through hole to be detachably and fixedly connected with the second framework in the inserting direction of the mortise and tenon joint structure, and the stopping part and the second framework are pressed on the two sides of the first framework respectively. A double limiting structure is formed through the mortise and tenon joint structure and the fastener, the connection strength between the first framework and the second framework is further enhanced, and displacement of the first framework and the second framework in the inserting direction is prevented. And meanwhile, the first connecting part is in a detachable fixed connection mode, repeated disassembly and assembly are achieved, the maintenance space is increased for the internal structure of the unmanned aerial vehicle, and practicability is enhanced.

Description

Technical Field

[0001] This utility model relates to the field of drone design, specifically to a mortise and tenon connection structure and a drone. Background Technology

[0002] In the field of UAV design, especially in the structural design of UAV frames, mortise and tenon joints are widely used. Traditional plug-in mortise and tenon joints typically use a clearance fit between the tenon and the mortise to achieve rapid assembly, and their structure is simple and easy to disassemble and maintain. However, considering multiple factors such as UAV payload capacity, the complexity of the operating environment, and disassembly and maintenance, the connections between some frames need to ensure a certain level of connection strength. Plug-in mortise and tenon joints alone lack locking in the plugging direction, and the connection strength between frames does not meet the design requirements. Utility Model Content

[0003] In view of the problems existing in the prior art, the present invention provides a tenon and mortise connection structure, a drone frame and a drone, to improve the technical problems of the lack of locking in the insertion direction of some existing drone frames and the failure of the connection strength between frames to meet the design requirements.

[0004] To achieve the above and other related objectives, the first aspect of this utility model provides a mortise and tenon joint structure, which includes a first frame, a second frame, and fasteners. The first frame includes a through hole, and the second frame is inserted into the first frame via a mortise and tenon joint. The fastener includes a stop portion and a first connecting portion. Along the insertion direction of the mortise and tenon joint, the first connecting portion passes through the through hole and is detachably and fixedly connected to the second frame. The stop portion and the second frame are respectively pressed against both sides of the first frame.

[0005] In one embodiment of the mortise and tenon connection structure of this utility model, the mortise and tenon structure includes a tenon and a mortise. The tenon is disposed on one of the first frame and the second frame, and the mortise is disposed on the other of the first frame and the second frame. The tenon is inserted into the mortise.

[0006] In one embodiment of the mortise and tenon connection structure of this utility model, the fastener further includes a second connecting part, which is disposed on the second frame and connected to the first connecting part.

[0007] In one embodiment of the mortise and tenon connection structure of this utility model, the through hole at least partially overlaps with the second skeleton along the insertion direction.

[0008] In one embodiment of the mortise and tenon connection structure of this utility model, the second connecting part is a hexagonal nut.

[0009] In one embodiment of the mortise and tenon connection structure of this utility model, a slot is provided on the second skeleton along the thickness direction of the second skeleton. The slot includes an installation slot and a connecting slot. The second connecting part is disposed in the installation slot, and the first connecting part passes through the connecting slot to connect the second connecting part.

[0010] In one embodiment of the mortise and tenon connection structure of this utility model, the number of fasteners is multiple sets, and the multiple sets of fasteners are respectively connected to the first skeleton and the second skeleton.

[0011] In one embodiment of the mortise and tenon connection structure of this utility model, the through hole is a countersunk hole, and the stop part is disposed at the end of the first connecting part away from the second frame, and the stop part is located in the countersunk hole.

[0012] The second aspect of this utility model also provides a drone frame, the drone frame including the mortise and tenon connection structure described in any of the above claims.

[0013] A third aspect of this utility model also provides an unmanned aerial vehicle (UAV) comprising the aforementioned UAV frame.

[0014] This utility model provides a mortise and tenon connection structure, a drone frame, and a drone. The mortise and tenon connection structure is applied to the installation and connection of a portion of the drone's frame structure. In the insertion direction where the first and second frames are joined via the mortise and tenon structure, fasteners are provided to lock and fix the first and second frames in place. The self-locking characteristic of the mortise and tenon structure itself, combined with the constraint of the fastener's insertion direction, forms a double-limiting structure, thereby further enhancing the connection strength between the first and second frames and preventing displacement of the first and second frames in the insertion direction. Simultaneously, the first connection part is a detachable fixed connection, allowing for repeated disassembly and assembly, increasing maintenance space within the drone's internal structure, and enhancing practicality. 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 structural diagram of one embodiment of the mortise and tenon connection structure of this utility model;

[0017] Figure 2 This is a top view of one embodiment of the mortise and tenon connection structure of this utility model;

[0018] Figure 3 for Figure 2 Schematic diagram of the AA-direction cross-section structure;

[0019] Figure 4 for Figure 2 Schematic diagram of the BB-direction cross-section structure.

[0020] Component designation explanation:

[0021] 100, First frame; 110, Through hole; 200, Second frame; 210, Slot; 211, Mounting slot; 212, Connecting slot; 213, Extension slot; 300, Fastener; 310, Stop; 320, First connecting part; 330, Second connecting part; 400, Mortise and tenon structure; 410, Tenon; 420, Mortise. Detailed Implementation

[0022] 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.

[0023] 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.

[0024] 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.

[0025] To address the technical issues of insufficient locking in the insertion direction and inadequate connection strength between frames in existing drones, this invention provides a mortise and tenon connection structure, a drone frame, and the drone itself. This mortise and tenon connection structure allows the frame to be locked and fixed along the insertion direction via the mortise and tenon joint, improving the connection strength between frames. It also allows for repeated disassembly and assembly, facilitating internal maintenance operations and enhancing practicality.

[0026] Please see Figures 1 to 4 The first aspect of this utility model provides a mortise and tenon connection structure, which includes a first frame 100, a second frame 200, and fasteners 300. The first frame 100 and the second frame 200 are two relatively independent frame modules of a drone frame, and the second frame 200 is connected to the first frame 100 by a mortise and tenon structure 400. The structure of the first frame 100 and the second frame 200 is not limited and can be selected according to the actual structural design of the drone frame. In one embodiment, both the first frame 100 and the second frame 200 include plate-like structures. After the first frame 100 and the second frame 200 are mortised and tenoned, the plate surface of the first frame 100 and the plate surface of the second frame 200 are perpendicular. It should be noted that the structural type of the mortise and tenon structure 400 is not limited and can be any suitable structural type that enables the first frame 100 and the second frame 200 to be inserted and pulled in a single direction. For example, the mortise and tenon structure 400 can be a tenon joint, a dovetail joint, etc., but is not limited thereto. Specifically, in this embodiment, the mortise and tenon structure 400 is a tenon joint. The fastener 300 includes a stop portion 310 and a first connecting portion 320. The first frame 100 includes a through hole 110, which penetrates the first frame 100 along the insertion direction of the mortise and tenon structure 400. The structure of the through hole 110 is not limited; for example, it can be a circular through hole, a rectangular through hole, a square through hole, a countersunk hole, or any other suitable structural type that allows the first connecting portion 320 to pass through.

[0027] Please see Figure 1 and Figure 4Along the insertion direction of the mortise and tenon structure 400, the first connecting part 320 detachably and fixedly connects to the second frame 200 through the through hole 110. The method of detachable fixed connection between the first connecting part 320 and the second frame 200 is not limited; for example, it can be a slot-limiting connection, a threaded connection, a connector connection, a clamp connection, etc., but is not limited thereto. The stop part 310 is fixed to the first connecting part 320. For example, the stop part 310 and the first connecting part 320 can be an integral structural component, or they can be separate detachable fixed connecting components. With the fastener 300 locking and fixing the first frame 100 and the second frame 200, the stop part 310 abuts against the side of the first frame 100 away from the second frame 200, and the stop part 310 and the second frame 200 respectively press against both sides of the first frame 100 to achieve locking and fixing of the first frame 100 and the second frame 200 along the insertion direction. It should be noted that the structure type of fastener 300 is not limited, and it can be any suitable connection structure type that enables the fastener 300 to lock and fix the first frame 100 and the second frame 200 along the insertion direction of the tenon and mortise structure 400. For example, the fastener 300 can be a screw, bolt, threaded rod and nut connector, etc., but is not limited to this.

[0028] This mortise and tenon joint structure is used at least for the installation connection between some of the frame structures of the UAV skeleton. The insertion connection of the mortise and tenon structure 400 acts as a first limiting mechanism, restricting the displacement of the first frame 100 and the second frame 200 outside the insertion direction. The fastener 300 acts as a second limiting mechanism, locking and fixing the first frame 100 and the second frame 200 along the insertion direction of the mortise and tenon structure 400, restricting the displacement of the first frame 100 and the second frame 200 in the insertion direction. Thus, the mortise and tenon structure 400 and the fastener 300 form a double limiting structure, thereby further enhancing the connection strength between the first frame 100 and the second frame 200 and ensuring the assembly stability between the first frame 100 and the second frame 200. At the same time, the first connecting part 320 and the second frame 200 are detachable fixed connections, which can allow the first frame 100 and the second frame 200 to be repeatedly disassembled and assembled. When it is necessary to inspect the internal structural components of the UAV, disassembling the corresponding interfering first frame 100 or second frame 200 can increase the maintenance space and enhance practicality.

[0029] Please see Figure 1 and Figure 4In one embodiment of the mortise and tenon connection structure of this utility model, the mortise and tenon structure 400 serves as a connection structure for inserting between the first frame 100 and the second frame 200. The mortise and tenon structure 400 is a tenon with a groove, including a tenon 410 and a mortise 420. The tenon 410 is disposed on one of the first frame 100 and the second frame 200, and the mortise 420 is correspondingly disposed on the other of the first frame 100 and the second frame 200. The tenon 410 is inserted into the mortise 420. Specifically, in this embodiment, the tenon 410 is located on the outer edge of the second frame 200, and the tenon 410 and the second frame 200 are an integral structure. The mortise 420 can be a groove structure correspondingly opened on the first frame 100, or the mortise 420 can be a through hole structure that penetrates the first frame 100. The tenon 410 and the mortise 420 can be a clearance fit or an interference fit. In this embodiment, the mortise 420 is a through-hole structure, and after the tenon 410 is inserted into the mortise 420, the end of the tenon 410 facing away from the second frame 200 is located within the mortise 420, or the end face of the tenon 410 facing away from the second frame 200 is flush with the surface of the first frame 100, so that there are no protrusions after installation and connection, reducing the occupation of external space. When the first frame 100 and the second frame 200 are assembled and connected, the tenon 410 is inserted into the mortise 420 to form an insertion connection structure. Furthermore, the first frame 100 and the second frame 200 are in surface contact, and the included angle between the surfaces of the first frame 100 and the second frame 200 at the connection point is a right angle. In other embodiments, the tenon 410 can be fixedly installed on the first frame 100, and the mortise 420 corresponding to the tenon 410 is opened on the second frame 200.

[0030] It should be noted that the structure of the tenon 410 is not limited. For example, the tenon 410 can be a cylinder, square column, elliptical column, frustum, prism, etc., but is not limited thereto. The location of the mortise 420 on the first frame 100 is not limited and can be determined comprehensively based on the structural design between the first frame 100 and the second frame 200, as long as it can achieve the insertion and extraction connection between the tenon 410 and the mortise 420. The number of tenon and mortise structures 400 can be one set or multiple sets, which can be actually selected based on the structure of the first frame 100 and the second frame 200 and the stability of the insertion. Specifically, in the embodiment, the number of tenon and mortise structures 400 is two sets, and the two sets of tenon and mortise structures 400 are arranged alternately between the first frame 100 and the second frame 200, and the insertion direction of the two sets of tenon and mortise structures 400 is consistent.

[0031] Please see Figure 3 and Figure 4In one embodiment of the mortise and tenon connection structure of this utility model, the fastener 300 further includes a second connecting part 330, which is disposed on the second frame 200 and is detachably fixedly connected to the first connecting part 320. Specifically, in this embodiment, the detachable fixed connection between the second connecting part 330 and the first connecting part 320 is a threaded connection. The second connecting part 330 can be a threaded hole structure opened on the second frame 200, and the threaded hole structure is adapted to the connection position of the first connecting part 320. The second connecting part 330 can also be a connector fixedly installed on the second frame 200. For example, the second connecting part 330 can be a commonly used nut type such as a round nut or a hexagonal nut. The second connecting part 330 can be installed on the second frame 200 by means of fixed connection such as slot connection, bonding, or welding to realize the threaded connection between the first connecting part 320 and the second connecting part 330.

[0032] Please see Figure 3 In one embodiment of the mortise and tenon connection structure of this utility model, the fastener 300 is a screw and nut connection structure, the stop part 310 is the large end of the screw, the first connecting part 320 is the screw shank part, and the second connecting part 330 is the nut. The nut is fixedly installed on the second frame 200. The screw passes through the through hole 110 along the insertion direction of the mortise and tenon structure 400 and is threadedly connected to the nut, providing a reliable locking force and realizing the locking and fixing of the first frame 100 and the second frame 200 in the insertion direction. The screw and nut connection method is simple and easy to operate. Assembly and disassembly can be completed without complicated tools or equipment, which improves the assembly efficiency of the UAV frame and reduces maintenance costs.

[0033] Please see Figure 2 and Figure 3In one embodiment of the mortise and tenon connection structure of this utility model, the through hole 110 and the second frame 200 at least partially overlap along the insertion direction. Specifically, the axial direction of the through hole 110 is the connection direction of the first connecting part 320. In this embodiment, the second connecting part 330 is a hexagonal nut, and the thickness of the plate of the second frame 200 is usually smaller than the outer ring size of the nut. The second connecting part 330 is at least partially snapped onto the second frame 200, that is, when the first connecting part 320 and the second connecting part 330 are threadedly connected, they occupy part of the plate space of the second frame 200, thereby reducing the space occupied by the outer areas of the first frame 100 and the second frame 200. Fastener 300 serves as a fastening connector between the first frame 100 and the second frame 200 in the insertion direction. Through the structural design of the first frame 100 and the second frame 200, the fastener 300 occupies the inherent installation space of the first frame 100 and the second frame 200, thereby reducing the space occupied inside the drone, improving the utilization rate of the drone's installation space, and reducing the space occupied by the fastener 300 on the installation space outside the drone frame, thus meeting the deployment requirements of the drone in precision scenarios.

[0034] Specifically, in order to reduce the space occupied by the fastener 300 in the original drone's installation space and ensure the space utilization rate of the original drone's installation space, please refer to... Figure 1 and Figure 4In one embodiment of the mortise and tenon connection structure of this utility model, a slot 210 is provided on the second frame 200 along its thickness direction. The slot 210 is the inherent space occupied by the second frame 200 in the drone installation space, thus becoming the space to accommodate the connection of the first connecting part 320 and the second connecting part 330. The slot 210 has a "T" shaped structure or a "+" shaped structure. The slot 210 includes a mounting slot 211 and a connecting slot 212, and the second connecting part 330 is disposed in the mounting slot 211. The mounting slot 211 is a rectangular slot that penetrates the second frame 200 along its thickness direction. The size and structure of the mounting slot 211 are adapted to the structural size of the hexagonal nut, that is, the hexagonal nut is installed in the mounting slot 211 by snap-fit ​​and fixed to the second frame 200 by adhesive or welding. A set of relatively parallel outer surfaces of the hexagonal nut respectively abut against the two side plates of the mounting slot 211. When the first connecting part 320 and the second connecting part 330 are threadedly locked, the second connecting part 330 is prevented from rotating, ensuring a smooth locking connection between the first connecting part 320 and the second connecting part 330. Both the connecting groove 212 and the mounting groove 211 are located on the connection path of the first connecting part 320. The connecting groove 212 is a receiving groove for the second connecting part 330 to pass through, and it is adapted to the first connecting part 320. Furthermore, the connecting groove 212 penetrates the second frame 200 along its thickness direction. The first connecting part 320 passes through the connecting groove 212 to connect to the second connecting part 330. Further, along the insertion direction, an extension groove 213 is also provided on the second frame 200. The extension groove 213 and the connecting groove 212 are located on opposite sides of the mounting groove 211. The extension groove 213 is used to accommodate the portion of the first connecting part 320 extending out of the second connecting part 330, ensuring the connection effect between the first connecting part 320 and the second connecting part 330.

[0035] Please see Figure 4 In one embodiment of the mortise and tenon connection structure of this utility model, there are multiple sets of fasteners 300, which respectively connect the first frame 100 and the second frame 200. Specifically, in this embodiment, in order to ensure the connection strength between the first frame 100 and the second frame 200, there are three sets of fasteners 300, which are respectively spaced apart between the first frame 100 and the second frame 200.

[0036] Please see Figure 3In one embodiment of the mortise and tenon connection structure of this utility model, the stop portion 310 is disposed at the end of the first connecting portion 320 away from the second frame 200, that is, the stop portion 310 and the first connecting portion 320 are an integral structure, such as a bolt or screw. The through hole 110 is a countersunk hole, and the stop portion 310 is located in the countersunk hole. The stop portion 310 is hidden in the plate body of the first frame 100, which further reduces the space occupied by the fastener 300 for the drone installation and improves the space utilization rate.

[0037] The second aspect of this utility model also provides a drone frame, which includes the mortise and tenon connection structure of any of the above embodiments. The number and position of the mortise and tenon connection structure in the drone frame are not limited. The number of mortise and tenon connection structures is at least one set, or multiple sets, which can be selected according to the actual design of the drone frame.

[0038] A third aspect of this utility model also provides a drone, which includes the mortise and tenon connection structure described in any of the above embodiments or a drone frame using the above mortise and tenon connection structure. It should be noted that the drone of this utility model may also include conventional structures and integrated modules of existing drones such as a power module, control module, propeller, fuselage, and communication module, which will not be described in detail here.

[0039] In this utility model, a mortise and tenon connection structure, a drone frame, and a drone are disclosed. This mortise and tenon connection structure is applied to the installation and connection of a portion of the drone's frame structure. Fasteners are used to lock and fix the first and second frames in the insertion direction where the first and second frames are joined via the mortise and tenon structure. The self-locking characteristic of the mortise and tenon structure itself, combined with the constraint of the fastener's insertion direction, forms a double-limiting structure, thereby further enhancing the connection strength between the first and second frames and preventing displacement of the first and second frames in the insertion direction. Simultaneously, the first connection part is a detachable fixed connection, allowing for repeated disassembly and assembly, increasing maintenance space within the drone's internal structure, and enhancing practicality. This addresses the technical problems of existing drone frames lacking locking in the insertion direction and the connection strength between frames not meeting design requirements. Therefore, this utility model effectively overcomes some practical problems in the prior art, thus possessing high utilization value and practical significance.

[0040] 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 mortise and tenon joint structure, characterized in that, include: A first frame, the first frame including a through hole; The second frame is connected to the first frame via a mortise and tenon joint. Fastener, including a stop portion and a first connecting portion; In this configuration, along the insertion direction of the mortise and tenon structure, the first connecting part is detachably and fixedly connected to the second frame through the through hole, and the stop part and the second frame are respectively pressed against both sides of the first frame.

2. The mortise and tenon connection structure according to claim 1, characterized in that, The mortise and tenon structure includes a tenon and a mortise. The tenon is disposed on one of the first frame and the second frame, and the mortise is disposed on the other of the first frame and the second frame. The tenon is inserted into the mortise.

3. The mortise and tenon connection structure according to claim 1, characterized in that, The fastener further includes a second connecting part, which is disposed on the second frame and is detachably fixedly connected to the first connecting part.

4. The mortise and tenon connection structure according to claim 3, characterized in that, Along the insertion direction, the through hole at least partially overlaps with the second skeleton.

5. The mortise and tenon connection structure according to claim 3, characterized in that, The second connecting part is a hexagonal nut.

6. The mortise and tenon connection structure according to claim 3 or 5, characterized in that, Along the thickness direction of the second skeleton, a slot is provided on the second skeleton. The slot includes a mounting slot and a communicating slot. The second connecting part is disposed in the mounting slot, and the first connecting part passes through the communicating slot to connect to the second connecting part.

7. The mortise and tenon connection structure according to any one of claims 1-3, characterized in that, The fasteners are in multiple sets, and the multiple sets of fasteners are respectively connected to the first frame and the second frame.

8. The mortise and tenon connection structure according to claim 1, characterized in that, The through hole is a countersunk hole, and the stop is located at the end of the first connecting part away from the second frame, and the stop is located inside the countersunk hole.

9. A drone frame, characterized in that, Includes the mortise and tenon connection structure as described in any one of claims 1 to 8.

10. A drone, characterized in that, Includes the drone frame as described in claim 9.

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