Unmanned aerial vehicle

Abstract

The utility model discloses an unmanned aerial vehicle. The unmanned aerial vehicle comprises a shell, a mainboard and a heat dissipation assembly. The shell is provided with an inner cavity; a groove is formed in the outer surface of the shell, and a first opening communicated with the inner cavity is formed in the groove wall of the groove; the main board is arranged in the inner cavity; the heat dissipation assembly comprises a heat dissipation insert, a cover plate, a fan and a heat conduction piece. The heat dissipation insert is accommodated in the groove and seals the first opening; the heat conduction piece is in heat conduction connection with the heat dissipation insert through the first opening and is in heat conduction connection with the mainboard; the cover plate seals the opening of the groove, a heat dissipation channel is formed between the cover plate and the heat dissipation insert, the cover plate is provided with an air inlet and an air outlet which are communicated with the heat dissipation channel, and the fan is located in the groove and corresponds to the air inlet or the air outlet in position.

Description

Technical Field

[0001] The present application relates to the technical field of unmanned aerial vehicles, and in particular to a unmanned aerial vehicle that can meet airtightness requirements. Background Art

[0002] With the rapid development of the drone industry, various multi-rotor and fixed-wing drones for different industries have emerged, and are widely used in aerial photography, surveying and mapping, plant protection, logistics and other fields. However, in related technologies, in order to meet the requirements of waterproof level, the waterproof structure design of drones is relatively complex, which is not convenient for mass production. Utility Model Content

[0003] The embodiments of the present application provide a drone that can meet airtightness requirements and is easy to mass produce.

[0004] The drone of the embodiment of the present application includes:

[0005] A shell having an inner cavity; an outer surface of the shell is provided with a groove, and a groove wall of the groove has a first opening communicating with the inner cavity;

[0006] a main board, disposed in the inner cavity; and

[0007] A heat dissipation component includes a heat dissipation insert, a cover plate, a fan and a heat conductive member; the heat dissipation insert is accommodated in the groove and seals the first opening; the heat conductive member is thermally connected to the heat dissipation insert through the first opening and is thermally connected to the mainboard; the cover plate closes the opening of the groove and forms a heat dissipation channel with the heat dissipation insert, the cover plate has an air inlet and an air outlet connected to the heat dissipation channel, the fan is located in the groove and corresponds to the position of the air inlet or the air outlet.

[0008] According to some embodiments of the present application, the heat dissipation insert is connected to the housing by injection molding.

[0009] According to some embodiments of the present application, the groove wall of the groove further has a second opening communicating with the inner cavity, and the wiring harness of the fan extends into the inner cavity through the second opening and is electrically connected to the mainboard;

[0010] The heat dissipation assembly further includes a first sealant, which seals the second opening.

[0011] According to some embodiments of the present application, a glue groove is formed between the outer periphery of the heat conductive component and the hole wall of the first opening, and the glue groove is filled with sealant.

[0012] According to some embodiments of the present application, the first opening includes a first sub-hole and a second sub-hole;

[0013] The heat conductive member includes a protrusion and a heat pipe. The protrusion is inserted into the first sub-hole and is integrally connected to the heat dissipation insert and is thermally connected to the mainboard. The heat pipe is located in the second sub-hole and is thermally connected to the heat dissipation insert and the mainboard respectively.

[0014] According to some embodiments of the present application, the inner wall surface of the shell is convexly provided with an annular portion having an opening, the annular portion encloses a sound cavity connected to the opening, and the shell further has a sound outlet hole connected to the sound cavity;

[0015] The drone further includes a piezoelectric sheet electrically connected to the mainboard, and the piezoelectric sheet seals the opening.

[0016] According to some embodiments of the present application, the drone further includes a first dust-proof net, which covers the sound outlet.

[0017] According to some embodiments of the present application, the housing further has a third opening communicating with the inner cavity;

[0018] The drone also includes an external device connected to the shell and a second seal, the wiring harness of the external device extends into the inner cavity through the third opening and is electrically connected to the mainboard, and the second seal is sealed in the third opening.

[0019] According to some embodiments of the present application, the housing further has a mounting hole communicating with the inner cavity;

[0020] The drone also includes an arm assembly and a third seal installed on the shell, the third seal includes an annular plug sealed in the mounting hole and a plurality of elastic sheets, the plurality of elastic sheets are connected to the inner annular surface of the annular plug and are arranged along the circumference of the annular plug, the ends of the plurality of elastic sheets away from the inner annular surface of the annular plug jointly form a through hole for the wiring harness of the arm assembly to pass through, and an open slit connected to the through hole is formed between two adjacent elastic sheets.

[0021] According to some embodiments of the present application, the outer ring surface of the annular plug is further provided with two annular clamping portions arranged along the axial direction of the annular plug, and the two annular clamping portions are clamped on the edge of the mounting hole of the housing;

[0022] A portion of the annular plug located between the two annular clamping portions is provided with a plurality of through holes, and the plurality of through holes are arranged along the circumference of the annular plug and penetrate the inner annular surface and the outer annular surface of the annular plug.

[0023] One embodiment of the above application has at least the following advantages or beneficial effects:

[0024] In the drone of the embodiment of the present application, the heat dissipation insert is accommodated in the groove of the shell and the first opening is sealed. The heat dissipation channel of the heat dissipation component is spaced apart from the inner cavity of the shell, so that the drone not only meets the airtightness requirements but also has the heat dissipation function. The setting of the heat dissipation component does not destroy the airtightness structure. While meeting the airtightness requirements, it can also achieve mass production and processing, which significantly improves production efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 Shown is a schematic diagram of an exploded view of a drone according to an embodiment of the present application.

[0026] Figure 2 Shown is a schematic diagram of the exploded view of the heat dissipation assembly and the bottom shell of an embodiment of the present application.

[0027] Figure 3 Shown is a three-dimensional schematic diagram of a heat dissipation insert according to an embodiment of the present application.

[0028] Figure 4 Shown is a schematic diagram of the heat dissipation component and the bottom shell after being assembled.

[0029] Figure 5 Shown is a schematic diagram of an exploded view of the piezoelectric sheet, the first dustproof net and the annular portion of the bottom shell.

[0030] Figure 6 Shown is an exploded schematic diagram of the third sealing member and the upper cover.

[0031] Figure 7 Shown is a three-dimensional schematic diagram of the third sealing member at a certain viewing angle.

[0032] Figure 8 Shown is a perspective schematic diagram of the third sealing member from another viewing angle.

[0033] The reference numerals are described as follows:

[0034] 100, housing; 102, third opening; 103, mounting hole; 110, groove; 111, first opening; 111a, first sub-hole; 111b, second sub-hole; 112, second opening; 120, annular portion; 121, opening; 122, sound cavity; 130, sound outlet hole; 140, upper cover; 141, top plate; 142, side wall; 150, bottom housing;

[0035] 200, heat dissipation assembly; 210, heat dissipation insert; 211, base plate; 212, fin; 220, cover plate; 221, air inlet; 222, air outlet; 230, fan; 240, heat conducting member; 241, protrusion; 242, heat pipe; 260, glue groove;

[0036] 300, motherboard;

[0037] 410, first sealing member; 420, second sealing member; 430, third sealing member; 431, annular plug; 431a, perforation; 432, elastic sheet; 433, through hole; 434, slit; 435, annular clamping portion;

[0038] 510. Piezoelectric sheet; 520. First dustproof net. DETAILED DESCRIPTION

[0039] Example embodiments will now be described more fully with reference to the accompanying drawings. However, example embodiments can be implemented in a variety of forms and should not be construed as limited to the embodiments set forth herein; rather, these embodiments are provided so that this application will be comprehensive and complete and fully convey the concepts of the example embodiments to those skilled in the art. The same reference numerals in the figures represent the same or similar structures, and thus their detailed description will be omitted.

[0040] It is understood that the terms "including" and "having" and any variations thereof in the embodiments of the present application are intended to cover non-exclusive inclusions. For example, a process, method, system, product, or device that includes a series of steps or units is not limited to the listed steps or units, but may optionally include steps or units that are not listed, or may optionally include other steps or components that are inherent to these processes, methods, products, or devices.

[0041] like Figure 1 As shown, the drone of the embodiment of the present application includes a housing 100, a mainboard 300 and a heat dissipation assembly 200. The housing 100 has an inner cavity, and the mainboard 300 is disposed in the inner cavity. The heat dissipation assembly 200 is connected to the housing 100 and is used to dissipate heat for the mainboard 300.

[0042] The housing 100 may include an upper cover 140 and a bottom case 150 , which are connected to each other to form an inner cavity for accommodating the mainboard 300 .

[0043] As an example, the bottom shell 150 and the upper cover 140 are both in a rectangular shape and have an opening on one surface. The opening of the bottom shell 150 is arranged opposite to the opening of the upper cover 140, and the bottom shell 150 and the upper cover 140 are buckled together to form an inner cavity for accommodating the mainboard 300.

[0044] like Figure 2As shown, the outer surface of the bottom shell 150 of the housing 100 is provided with a groove 110, and the groove wall of the groove 110 has a first opening 111 connected to the inner cavity. The heat dissipation assembly 200 includes a heat dissipation insert 210, a cover plate 220, a fan 230 and a heat conductive member 240; the heat dissipation insert 210 is accommodated in the groove 110 and seals the first opening 111; the heat conductive member 240 is thermally connected to the heat dissipation insert 210 through the first opening 111, and is thermally connected to the mainboard 300; the cover plate 220 closes the opening of the groove 110, and forms a heat dissipation channel with the heat dissipation insert 210, the cover plate 220 has an air inlet 221 and an air outlet 222 connected to the heat dissipation channel, and the fan 230 is located in the groove 110, and corresponds to the position of the air inlet 221 or the air outlet 222.

[0045] In one embodiment, the heat dissipation insert 210 is thermally connected to the mainboard 300 through the heat conductive member 240, and the heat generated by the mainboard 300 can be transferred to the heat dissipation insert 210 through the heat conductive member 240. External cold air enters the heat dissipation channel through the air inlet 221 to perform heat exchange with the heat dissipation insert 210, and the hot air formed after the heat exchange flows out from the air outlet 222, so that the heat dissipation channel and the external cold air form an external circulation to dissipate heat for the mainboard 300.

[0046] It can be seen that in the drone of the embodiment of the present application, the heat dissipation insert 210 is accommodated in the groove 110 of the shell 100 and the first opening 111 is sealed. The heat dissipation channel of the heat dissipation component 200 is spaced apart from the inner cavity of the shell 100, so that the drone not only meets the airtightness requirements but also has the heat dissipation function. The setting of the heat dissipation component 200 does not destroy the airtightness structure. While meeting the airtightness requirements, it can also achieve mass production and processing, which significantly improves production efficiency.

[0047] It is understandable that the present application does not specifically limit the number of heat dissipation inserts 210. For example, the number of heat dissipation inserts 210 is one, two, or another number. When the number of heat dissipation inserts 210 is multiple, the bottom shell 150 is provided with grooves 110 equal to the number of heat dissipation inserts 210, and the multiple heat dissipation inserts 210 are accommodated in the multiple grooves 110 in a one-to-one correspondence. The multiple heat dissipation inserts 210 can be arranged side by side along the width direction of the bottom shell 150.

[0048] The first opening 111 may be disposed on a bottom wall or a side wall of the groove 110 .

[0049] As an example, the heat dissipation assembly 200 further includes a plurality of second dustproof nets (not shown in the figure) for closing the air inlet 221 and the air outlet 222. By providing the second dustproof nets, external dust can be prevented from entering the heat dissipation channel through the air inlet 221 and the air outlet 222 to affect the heat dissipation effect.

[0050] like Figure 1As shown, in one embodiment, the first opening 111 includes a first sub-hole 111a and a second sub-hole 111b. The functions of the first sub-hole 111a and the second sub-hole 111b will be described in detail below.

[0051] In one embodiment, the heat sink insert 210 is connected to the housing 100 by injection molding. By injection molding, the sealing performance between the heat sink insert 210 and the housing 100 can be improved, so that the heat sink insert 210 and the housing 100 meet a higher level of airtightness requirements. In addition, the assembly and processing of the heat sink insert 210 and the housing 100 is also facilitated to achieve mass production.

[0052] Of course, in other implementations, the heat dissipation insert 210 and the housing 100 may also be connected by welding, bonding, or the like.

[0053] like Figure 1 and Figure 2 As shown, the groove wall of the groove 110 also has a second opening 112 connected to the inner cavity. The wiring harness of the fan 230 extends into the inner cavity through the second opening 112 and is electrically connected to the mainboard 300; the heat dissipation assembly 200 also includes a first seal 410, which seals the second opening 112.

[0054] In the embodiment of the present application, the second opening 112 is sealed by the first sealing member 410 , so that the wiring harness of the fan 230 is electrically connected to the mainboard 300 through the second opening 112 and the airtightness requirement is met.

[0055] The first sealing member 410 may be made of PC (polycarbonate) plastic, but is not limited thereto.

[0056] Of course, in other embodiments, the fan 230 may not have a wiring harness. For example, the fan 230 has a battery and a wireless module, the battery provides power to the wireless module, and the wireless module is wirelessly connected to the mainboard 300. In this case, the housing 100 may not be provided with the second opening 112.

[0057] like Figure 3 As shown, the heat sink insert 210 includes a substrate 211 and a plurality of fins 212. The substrate 211 can be attached to the bottom surface of the groove 110 and seal the first opening 111. The plurality of fins 212 are protruding from a side surface of the substrate 211 facing away from the bottom surface of the groove 110 and are arranged side by side along the width direction of the substrate 211.

[0058] The base plate 211 and the cover plate 220 form a heat dissipation channel. A plurality of fins 212 are located in the heat dissipation channel for heat exchange with external cold air.

[0059] like Figure 4As shown, a glue groove 260 is formed between the outer periphery of the heat conductive member 240 and the hole wall of the first opening 111, and the glue groove 260 is filled with sealant. By forming the glue groove 260 between the outer periphery of the heat conductive member 240 and the hole wall of the first opening 111, and filling the glue groove 260 with sealant, the air tightness of the drone can be further improved.

[0060] In one embodiment, the heat conducting member 240 includes a protrusion 241 and a heat pipe 242. The protrusion 241 is inserted into the first sub-hole 111a and integrally connected to the base plate 211 of the heat dissipation insert 210 and is thermally connected to the mainboard 300. The heat pipe 242 is located in the second sub-hole 111b and is thermally connected to the heat dissipation insert 210 and the mainboard 300, respectively.

[0061] A glue groove 260 is formed between the outer periphery of the protrusion 241 and the hole wall of the first sub-hole 111 a , and a glue groove 260 is formed between the outer periphery of the heat pipe 242 and the hole wall of the second sub-hole 111 b .

[0062] The protrusion 241 and the mainboard 300 may be connected by thermal conductive adhesive, and the heat pipe 242 and the mainboard 300 may be connected by thermal conductive adhesive. In other embodiments, the protrusion 241 may also be in direct contact with the mainboard 300, and the heat pipe 242 may be in direct contact with the mainboard 300.

[0063] Of course, the heat conducting member 240 may also include only the protrusion 241 without including the heat pipe 242. Alternatively, the heat conducting member 240 may include only the heat pipe 242 without including the protrusion 241.

[0064] like Figure 5 As shown, the inner wall surface of the bottom shell 150 of the housing 100 is convexly provided with an annular portion 120 having an opening 121, the annular portion 120 encloses a sound cavity 122 connected to the opening 121, and the housing 100 also has a sound outlet 130 connected to the sound cavity 122. The drone also includes a piezoelectric sheet 510 electrically connected to the mainboard 300, and the piezoelectric sheet 510 seals the opening 121.

[0065] In the embodiment of the present application, the piezoelectric sheet 510 seals the opening 121 of the annular portion 120 , thereby preventing external moisture or dust from entering the inner cavity of the housing 100 through the opening 121 , thereby meeting the airtightness requirement.

[0066] In one embodiment, the drone further includes a first dustproof net 520, and the first dustproof net 520 covers the sound outlet 130. By providing the first dustproof net 520, external dust can be prevented from entering the sound cavity 122 through the sound outlet 130.

[0067] The first dustproof net 520 may be located on the outer wall of the bottom shell 150 , or may be located inside the sound cavity 122 .

[0068] like Figure 5 As shown, the bottom shell 150 of the housing 100 also has a third opening 102 connected to the inner cavity of the housing 100. The drone also includes an external device (not shown in the figure) connected to the housing 100 and a second sealing member 420. The wiring harness of the external device extends into the inner cavity through the third opening 102 and is electrically connected to the mainboard 300. The second sealing member 420 is sealed in the third opening 102.

[0069] In the embodiment of the present application, the third opening 102 is sealed by the second sealing member 420, so that the wiring harness of the external device is electrically connected to the mainboard 300 through the third opening 102 and the airtightness requirement is met.

[0070] Among them, the present application does not specifically limit the type of external device. For example, the external device can be any one or more of the following: camera and sensor, GPS navigation system, spraying system, etc.

[0071] like Figures 6 to 8 As shown, the bottom shell 150 of the housing 100 also has a mounting hole 103 communicating with the inner cavity of the housing 100. In one embodiment, the bottom shell 150 has a top plate 141 and a side wall 142, and the side wall 142 is connected to the top plate 141. The side wall 142 has a mounting hole 103, and the mounting hole 103 penetrates the side wall 142 along the thickness direction of the side wall 142.

[0072] The drone also includes an arm assembly (not shown in the figure) installed on the shell 100 and a third seal 430. The third seal 430 includes an annular plug 431 sealed in the mounting hole 103 and a plurality of elastic sheets 432. The plurality of elastic sheets 432 are connected to the inner annular surface of the annular plug 431 and are arranged along the circumference of the annular plug 431. The ends of the plurality of elastic sheets 432 away from the inner annular surface of the annular plug 431 together form a through hole 433 for the wiring harness of the arm assembly to pass through. An open slit 434 connected to the through hole 433 is formed between two adjacent elastic sheets 432.

[0073] In one embodiment, the third sealing member 430 is first installed in the installation hole 103 of the bottom shell 150, and then the wire harness of the arm assembly passes through the annular plug 431 and extends into the inner cavity. When the wire harness of the arm assembly passes through the annular plug 431, the wire harness can stretch the multiple elastic sheets 432.

[0074] In the embodiment of the present application, the third sealing member 430 has a plurality of elastic sheets 432 that can be deformed, which not only facilitates the passage of the wiring harness of the arm assembly but also ensures air tightness.

[0075] It is understandable that the present application does not specifically limit the number of elastic sheets 432 . For example, the number of elastic sheets 432 may be two, three, four, five or other numbers.

[0076] like Figure 7and Figure 8 As shown, the outer ring surface of the annular plug 431 is also provided with two annular clamping portions 435 arranged along the axial direction of the annular plug 431, and the two annular clamping portions 435 are clamped on the edge of the mounting hole 103 of the shell 100; the part of the annular plug 431 located between the two annular clamping portions 435 is provided with a plurality of through holes 431a, and the plurality of through holes 431a are arranged along the circumference of the annular plug 431 and penetrate the inner ring surface and the outer ring surface of the annular plug 431.

[0077] Among the multiple through holes 431a, one through hole 431a can be used as a glue injection port, and the remaining through holes 431a can be used as glue outlets. For example, after the third sealing member 430 is installed in the mounting hole 103, and the wiring harness of the machine arm assembly passes through the annular plug 431, sealant can be injected into the annular plug 431 through one of the through holes 431a, and after the inside of the annular plug 431 is filled with sealant, the sealant can overflow from the remaining through holes 431a to between the two annular clamping parts 435. On the one hand, the sealant can be sealed between the wiring harness of the machine arm assembly and the inner annular surface of the annular plug 431; on the other hand, the sealant can also be sealed between the outer annular surface of the annular plug 431 and the hole wall of the mounting hole 103.

[0078] In summary, the drone of the embodiment of the present application has at least the following advantages and beneficial effects:

[0079] In the drone of the embodiment of the present application, the heat dissipation insert 210 is accommodated in the groove 110 of the shell 100 and seals the first opening 111. The heat dissipation channel of the heat dissipation component 200 is spaced apart from the inner cavity of the shell, so that the drone meets the airtightness requirements and has a heat dissipation function. The setting of the heat dissipation component 200 does not destroy the airtightness structure. While meeting the airtightness requirements, it can also achieve mass production and processing, which significantly improves production efficiency.

[0080] It is understandable that the various embodiments / implementations provided in the present application can be combined with each other without causing any contradiction, and will not be illustrated one by one here.

[0081] In the application embodiments, the terms "first", "second", and "third" are used for descriptive purposes only and are not to be understood as indicating or implying relative importance; the term "plurality" refers to two or more, unless otherwise expressly defined. The terms "installed", "connected", "connected", "fixed", etc. should be understood in a broad sense. For example, "connected" can be a fixed connection, a detachable connection, or an integral connection; "connected" can be a direct connection or an indirect connection through an intermediate medium. For those of ordinary skill in the art, the specific meanings of the above terms in the application embodiments can be understood according to the specific circumstances.

[0082] In the description of the application embodiments, it should be understood that the directions or positional relationships indicated by the terms "up", "down", "left", "right", "front", "back", etc. are based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the application embodiments and simplifying the description, rather than indicating or implying that the device or unit referred to must have a specific direction, be constructed and operated in a specific orientation, and therefore, should not be understood as a limitation on the application embodiments.

[0083] In the description of this specification, the description of the terms "one embodiment", "some embodiments", "specific embodiments", etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the application embodiment. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0084] The above are only preferred embodiments of the application embodiments and are not intended to limit the application embodiments. For those skilled in the art, the application embodiments may have various modifications and changes. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the application embodiments shall be included in the protection scope of the application embodiments.

Claims

1. A drone, characterized in that: include: A shell having an inner cavity; an outer surface of the shell is provided with a groove, and a groove wall of the groove has a first opening communicating with the inner cavity; A main board, disposed in the inner cavity; as well as A heat dissipation component includes a heat dissipation insert, a cover plate, a fan and a heat conductive member; the heat dissipation insert is accommodated in the groove and seals the first opening; the heat conductive member is thermally connected to the heat dissipation insert through the first opening and is thermally connected to the mainboard; the cover plate closes the opening of the groove and forms a heat dissipation channel with the heat dissipation insert, the cover plate has an air inlet and an air outlet connected to the heat dissipation channel, the fan is located in the groove and corresponds to the position of the air inlet or the air outlet.

2. The drone according to claim 1, characterized in that: The heat dissipation insert is connected to the housing by injection molding.

3. The drone according to claim 1, characterized in that: The groove wall of the groove also has a second opening communicating with the inner cavity, and the wiring harness of the fan extends into the inner cavity through the second opening and is electrically connected to the mainboard; The heat dissipation assembly further includes a first sealant, which seals the second opening.

4. The drone according to claim 1, characterized in that: A glue groove is formed between the outer periphery of the heat conducting member and the hole wall of the first opening, and the glue groove is filled with sealant.

5. The drone according to claim 1, characterized in that: The first opening includes a first sub-hole and a second sub-hole; The heat conductive member includes a protrusion and a heat pipe. The protrusion is inserted into the first sub-hole and is integrally connected to the heat dissipation insert and is thermally connected to the mainboard. The heat pipe is located in the second sub-hole and is thermally connected to the heat dissipation insert and the mainboard respectively.

6. The drone according to any one of claims 1 to 5, characterized in that: The inner wall surface of the shell is convexly provided with an annular portion having an opening, the annular portion encloses a sound cavity connected to the opening, and the shell further has a sound outlet hole connected to the sound cavity; The drone further includes a piezoelectric sheet electrically connected to the mainboard, and the piezoelectric sheet seals the opening.

7. The drone according to claim 6, characterized in that: The drone further includes a first dustproof net, and the first dustproof net covers the sound outlet.

8. The drone according to any one of claims 1 to 5, characterized in that: The housing also has a third opening communicating with the inner cavity; The drone also includes an external device connected to the shell and a second seal, the wiring harness of the external device extends into the inner cavity through the third opening and is electrically connected to the mainboard, and the second seal is sealed in the third opening.

9. The drone according to any one of claims 1 to 5, characterized in that: The housing also has a mounting hole communicating with the inner cavity; The drone also includes an arm assembly and a third seal installed on the shell, the third seal includes an annular plug sealed in the mounting hole and a plurality of elastic sheets, the plurality of elastic sheets are connected to the inner annular surface of the annular plug and are arranged along the circumference of the annular plug, the ends of the plurality of elastic sheets away from the inner annular surface of the annular plug jointly form a through hole for the wiring harness of the arm assembly to pass through, and an open slit connected to the through hole is formed between two adjacent elastic sheets.

10. The drone according to claim 9, characterized in that: The outer ring surface of the annular plug is also provided with two annular clamping parts arranged along the axial direction of the annular plug, and the two annular clamping parts are clamped on the edge of the mounting hole of the housing; A portion of the annular plug located between the two annular clamping portions is provided with a plurality of through holes, and the plurality of through holes are arranged along the circumference of the annular plug and penetrate the inner annular surface and the outer annular surface of the annular plug.

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