A drone arm

Abstract

The utility model relates to the technical field of unmanned aerial vehicle equipment, in particular to an unmanned aerial vehicle arm, comprising a first arm and a second arm, and a connecting device for detachably connecting the first arm and the second arm, wherein the connecting device comprises a threaded sleeve movably connected to the first arm and a threaded portion arranged at the second arm, wherein the threaded sleeve rotates forwardly relative to the threaded portion to achieve threaded connection, and further comprises a locking device, wherein the locking device comprises a locking member arranged on the first arm and a limiting member arranged on the threaded sleeve; the locking member contacts the limiting member so that the threaded sleeve cannot generate reverse rotation relative to the threaded portion, so as to solve the technical problem that the unmanned aerial vehicle arm and the unmanned aerial vehicle body can be detachably assembled, and the unmanned aerial vehicle arm can be prevented from loosening due to the vibration of the propeller during flight, so as to fall off from the unmanned aerial vehicle body and affect the normal use of the unmanned aerial vehicle.

Description

Technical Field

[0001] The utility model relates to the technical field of unmanned aerial vehicle equipment, in particular to an unmanned aerial vehicle arm. Background Art

[0002] Drone is a general term for unmanned aerial vehicles, which are equipped with autopilots, program control devices and other equipment. Compared with manned aircraft, it has the advantages of small size, low cost and easy use.

[0003] However, most traditional drones adopt an integrated structure, which still occupies a large space and is not conducive to the miniaturization of the drone, thus causing inconvenience to users when carrying and storing it. Therefore, a structure in which the drone arm and the drone body can be detached has appeared in the prior art. However, during the flight of the drone, the rotation of the propeller will cause the drone arm to vibrate slightly. Over time, the drone arm is easy to fall off from the drone body, affecting the normal use of the drone.

[0004] Therefore, the above technical problems need to be solved. Utility Model Content

[0005] In order to overcome the deficiencies of the prior art, the utility model proposes a drone arm, which aims to solve the technical problem that the existing detachable drone arm is easy to fall off from the drone body.

[0006] In order to solve the above technical problems, the basic technical solution proposed by the utility model is:

[0007] An unmanned aerial vehicle arm comprises a first arm and a second arm, and a connecting device for detachably connecting the first arm and the second arm, wherein the connecting device comprises a threaded sleeve movably connected to the first arm and a threaded portion provided at the second arm, wherein the threaded sleeve rotates forwardly relative to the threaded portion to achieve threaded connection, and further comprises a locking device, wherein the locking device comprises a locking member provided on the first arm and a limiting member provided on the threaded sleeve;

[0008] The locking member contacts the limiting member so that the threaded sleeve cannot rotate in the opposite direction relative to the threaded portion.

[0009] Further, the locking member has a protruding portion;

[0010] The limiting member has a recessed portion;

[0011] The protrusion is sunken into the recessed portion so that the threaded sleeve cannot generate reverse rotation relative to the threaded portion.

[0012] Furthermore, the locking device further includes a telescopic member;

[0013] The telescopic member is connected to the locking member;

[0014] When the locking member is subjected to an external force, the telescopic member telescopes during the process of the locking member moving from the first position to the second position;

[0015] When the external force of the locking member is removed, the telescopic member resumes its extension to push the locking member to contact the limiting member so that the threaded sleeve cannot generate reverse rotation relative to the threaded portion.

[0016] Further, the locking member has a blind hole;

[0017] The blind hole is axially arranged from the side surface of the locking member toward the interior of the locking member.

[0018] Furthermore, the first machine arm has a fixing member;

[0019] The fixing member has a connecting portion and a second limiting portion;

[0020] The locking member has a racetrack hole, and the racetrack hole is recessed inwardly from the surface of the locking member to the back side thereof;

[0021] The connecting portion passes through the runway hole until the second limiting portion presses the locking member tightly against the first machine arm.

[0022] Furthermore, the locking member further includes a gripping portion;

[0023] The grip portion extends upward from a surface of the locking member.

[0024] Furthermore, the locking members have at least two;

[0025] The two locking members are in contact with the limiting members respectively.

[0026] Furthermore, the first arm has a first guide portion, and the first guide portion includes a guide groove;

[0027] The second machine arm has a second guide portion, and the second guide portion includes a guide block;

[0028] The guide groove is used for assembling the guide block.

[0029] Further, the notch of the guide groove has a first guide surface;

[0030] The end of the guide block has a second guide surface;

[0031] The first guiding surface and the second guiding surface are parallel to each other.

[0032] The beneficial effects of the utility model are:

[0033] The technical solution of the utility model provides a drone arm and a drone, which can make the drone arm and the drone body detachable and assembled to achieve the problem of compact storage of the drone and save space, and can also effectively solve the technical problem that the drone arm is easily loosened due to the vibration of the propeller during flight, causing it to fall off the drone body, thereby affecting the normal use of the drone. BRIEF DESCRIPTION OF THE DRAWINGS

[0034] Figure 1 This is an overall structural diagram of the first embodiment of the present utility model;

[0035] Figure 2 It is a structural diagram of the first guide part and the second guide part of the utility model;

[0036] Figure 3 This is a schematic structural diagram of the threaded portion of the first embodiment of the utility model;

[0037] Figure 4 It is a schematic diagram of the assembly of the locking member and the limiting member of the first embodiment of the utility model;

[0038] Figure 5 It is a schematic diagram of the assembly of the second embodiment of the locking member and the limiting member of the utility model;

[0039] Figure 6 It is a schematic diagram of the assembly of the locking member and the limiting member of the third embodiment of the utility model;

[0040] Figure 7 It is a cross-sectional view of the change of the telescopic member of the locking member of the utility model from the first position to the second position;

[0041] Figure 8 It is a structural schematic diagram of the fastener of the utility model;

[0042] Fig. 9 It is a structural schematic diagram of the gripping portion of the utility model;

[0043] Fig.10 This is an overall structural diagram of the second embodiment of the present utility model;

[0044] Description of reference numerals:

[0045] 1-first machine arm, 11-fixing member, 111-connecting portion, 112-second limiting portion, 12-assembly hole, 13-first guide portion, 131-guide groove, 1311-first guide surface, 2-second machine arm, 21-transfer member, 22-first guide portion, 222-guide block, 2221-second guide surface, 3-connecting device, 31-threaded sleeve, 32-threaded portion, 311-internal thread, 4-locking device, 41-locking member, 411-protrusion, 412-blind hole, 413-runway hole, 414-gripping portion, 415-accommodating space, 42-limiting member, 421-recessed portion, 43-telescopic member, 6-adjusting and fastening device, 7-electric control component, A-first position, B-second position, C-surface, D-back. DETAILED DESCRIPTION

[0046] The following will be combined with the attached Figure 1 To Attachment Fig.10 The technical solutions in the embodiments of the utility model are clearly and completely described. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of them. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0047] In order to make the drone body more compact and convenient for storage and transportation, the existing drone arms are designed to be detachably assembled with the drone body. However, as the drone is flying, the high-speed rotation of the drone propellers will cause a certain vibration to the drone arm and the drone, making it easy for the drone arm to loosen and detach from the drone body during long-term use, causing the drone to be unable to be used normally.

[0048] In this regard, the inventor provides a drone arm having a locking device, which includes a locking piece and a limit piece. The locking device brakes the rotation of the connecting device through the contact between the locking piece and the limit piece to prevent the connecting device from rotating in the opposite direction. The purpose is to achieve detachable assembly of the drone arm and the drone body, and can also effectively overcome the technical problem of loosening and detachment of the drone arm and the drone body during use of the drone.

[0049] Specifically, Figure 1As shown, a drone arm of the present technical solution includes the first arm 1 and the second arm 2. It should be noted that when the first arm 1 is assembled on the drone body, the second arm 2 is located at the end away from the drone body; conversely, when the first arm 2 is assembled on the drone body, the first arm 1 is located at the end away from the drone body. In the present technical solution, the first arm 1 and the second arm 2 do not refer to a specific part, but the names can be adjusted according to actual needs.

[0050] The first machine arm 1 and the second machine arm 2 are hollow cylindrical structures. A transfer piece 21 is movably connected to the second machine arm 2. During assembly, one end of the transfer piece 21 is inserted into the first machine arm 1, and the other end of the transfer piece 21 is sleeved with the second machine arm 2. An adjustment and fastening device 6 is sleeved on the outer surface of the transfer piece 21. The adjustment and fastening device 6 is a semi-closed annular component. By connecting the two ends of the annular component together, the adjustment and fastening device 6 increases the extrusion force on the transfer piece 21, and the transfer piece 21 squeezes the second machine arm 2 sleeved therein, so that the second machine arm 2 is firmly sleeved in the transfer piece 21.

[0051] Furthermore, Figure 1 to Figure 2 As shown, the first arm 1 has a first guide portion 13, the first guide portion 13 includes a guide groove 131, the first guide portion 13 has a guide groove 131 recessed from the port edge of the first arm 1 to the port wall, the notch of the guide groove 131 has a first guide surface 1311; the first guide surface 1311 extends outwardly from the open notch of the guide groove 131.

[0052] The transfer member 21 corresponding to the first guide portion 13 has a second guide portion 22 , and the second guide portion 22 includes a guide block 222 . The guide groove 131 is used to assemble the guide block 222 to achieve assembly connection between the second arm 2 and the first arm 1 .

[0053] The end of the guide block 222 has a second guide surface 2221 , and the second guide surface 2221 extends inwardly from both sides of the end of the guide block 222 . It should be noted that the first guide surface 1311 and the second guide surface 2221 are parallel to each other.

[0054] Therefore, during assembly, when the second guide surface 2221 touches the first guide surface 1311, the first guide surface 1311 will follow the inclined surface of the second guide surface 2221 directly to the top surface of the guide block 222 until the groove surface of the guide groove 131 is fully in contact with the side of the guide block 222, so as to realize the assembly of the transfer part 21 on the first arm 1.

[0055] It should be noted that an electronic control component 7 is also provided inside the hollow first arm 1, the second arm 2 and the transfer part 21. The electronic control component 7 located at the end of the first arm 1 is connected to the drone fuselage, and the electronic control component 7 located at the second arm 2 is connected to the propeller end. When the second arm 2 is assembled on the first arm 1, the electronic control components 7 located at the first arm 1 and the second arm 2 are connected, thereby achieving electrical connection.

[0056] In actual use, the transfer component 21 and the second arm 2 can be pre-assembled to facilitate assembly with the first arm 1 .

[0057] Furthermore, the connection between the first arm 1 and the second arm 2 is more secure and the connection is tighter.

[0058] like Figure 3 to Figure 4 As shown, a connecting device 3 is provided to connect the first arm 1 and the second arm 2 in a detachable manner. The connecting device 3 includes a threaded sleeve 31 movably connected to the first arm 1 and a threaded portion 32 provided at the second arm 2. The threaded sleeve 31 rotates positively relative to the threaded portion 32 to achieve a threaded connection.

[0059] It should be noted that the threaded sleeve 31 rotates forward relative to the threaded portion 32 as follows: Figure 4 As shown, the rotation from the paper surface to the outside of the paper is the positive rotation, that is, the direction of firmly assembling the second arm 2 on the first arm 1. Conversely, the rotation from the outside of the paper to the inside of the paper is the reverse rotation, that is, the direction of detaching the second arm 2 from the first arm 1.

[0060] In actual use, the second arm 2 can be assembled on the first arm 1 only by rotating the second arm 2 with the threaded sleeve 31 and the threaded portion 32 located on the first arm 1 in the positive direction.

[0061] However, in actual use, the vibration of the propeller causes the connecting device 3 to be easily loosened, that is, the connection between the first arm 1 and the second arm 2 is easily loosened, resulting in the separation of the first arm 1 and the second arm 2. In this regard, the technical solution of the inventor further provides a locking device 4 for reinforcing the connection to prevent the first arm 1 and the second arm 2 from loosening and separation.

[0062] Specific as Figure 4 As shown, the locking device 4 includes a locking member 41 provided on the first machine arm 1 and a limiting member 42 provided on the circumference of the end of the threaded sleeve 31; the locking member 41 contacts the limiting member 42 so that the threaded sleeve 31 cannot produce reverse rotation relative to the threaded portion 32.

[0063] Embodiment 1

[0064] like Figure 4 As shown, the locking member 41 has a protruding portion 411 ; the limiting member 42 has a recessed portion 421 ; the protruding portion 411 falls into the recessed portion 421 so that the threaded sleeve 31 cannot generate reverse rotation relative to the threaded portion 32 .

[0065] In this embodiment, the recessed portions 421 are continuously arranged on the circumference of the threaded sleeve 31. When the raised portion 411 falls into the recessed portion 421, the surface of the raised portion 411 and the inner surface of the recessed portion 421 abut against each other, so that the threaded sleeve 31 cannot rotate in the opposite direction, thereby further strengthening the assembly connection between the first arm 1 and the second arm 2.

[0066] Embodiment 2

[0067] like Figure 5 As shown, in this embodiment, the locking member 41 and the limiting member 42 are both grinding disc structures, the locking member 41 has a first arcuate contact surface 400, and the limiting member 42 has a second arcuate contact surface 401. The first arcuate contact surface 400 and the second arcuate contact surface 401 are in mutual abutment contact, that is, the friction force between the first arcuate contact surface 400 and the second arcuate contact surface 401 is greater than the vibration force of the propeller, so that the threaded sleeve 31 cannot produce reverse rotation, thereby further strengthening the assembly connection between the first arm 1 and the second arm 2.

[0068] Embodiment 3

[0069] like Figure 6As shown, in this embodiment, the locking member 41 has a swinging member 402, and the limiting member 42 corresponding to the swinging member 402 is a ratchet 403. The swinging member 402 swings up and down under the action of an external force. When the swinging member 402 swings downward, the swinging member 402 just catches the ratchet 403, so that the ratchet 403 cannot rotate in the opposite direction, thereby preventing the threaded sleeve 31 from rotating in the opposite direction, thereby further strengthening the assembly connection between the first machine arm 1 and the second machine arm 2.

[0070] Further, such as Figure 7 As shown, the locking device 4 further includes a telescopic member 43; the telescopic member 43 is connected to the locking member 41; when the locking member 41 is subjected to external force, the telescopic member 43 telescopes during the process of the locking member 41 moving from the first position A to the second position B.

[0071] When the external force of the locking member 41 is removed, the telescopic member 43 is retracted to push the locking member 41 to contact the limiting member 42 so that the threaded sleeve 31 cannot rotate in the opposite direction relative to the threaded portion 32 .

[0072] It should be understood that, with such a design, when the external force is removed, the telescopic member 43 can cause the locking member 41 to continuously exert a squeezing force on the limiting member 42, so that the limiting member 42 cannot produce reverse rotation. However, when the first machine arm 1 and the second machine arm 2 need to be separated, it is only necessary to apply an external force to the locking member 41, so that the telescopic member 43 contracts so that the locking member 41 does not contact the limiting member 42, and the locking member 41 no longer prevents the limiting member 42 from rotating reversely.

[0073] like Figure 7 As shown, the telescopic member 43 is disposed in the locking member 41 , but is certainly not limited to being disposed in the locking member 41 , and may also be disposed in any other place as long as it can be connected to the locking member 41 .

[0074] Specifically, in this embodiment, the locking member 41 has a blind hole 412 , and the blind hole 412 is axially arranged from the side of the locking member 41 toward the inside of the locking member 41 .

[0075] The telescopic member 43 is horizontally arranged in the blind hole 412, and the locking member 41 has a runway hole 413. The runway hole 413 is recessed longitudinally inward from the surface C of the locking member 41 to the back side D of the locking member 41. It should be noted that, in this example, the runway hole 413 is located in the longitudinal direction of the blind hole 412 and is connected to the blind hole 412. The runway hole 413 and the blind hole 412 are in the same longitudinal direction.

[0076] In this embodiment, a fixing member 11 is inserted into the runway hole 413, and the fixing member 11 passes through the runway hole 413 and the blind hole 412 until it penetrates the back side D of the locking member 41 and finally ends in the assembly hole 12 on the first arm 1. When the fixing member 11 falls into the assembly hole 12, the connecting portion 111 and the inner side wall of the blind hole 412 form an accommodating space 415, and the telescopic member 43 is assembled in the accommodating space 415. One end of the telescopic member 43 abuts against the side of the connecting portion 11, so as to realize the assembly of the telescopic member 43 in the locking member 41.

[0077] It should be understood that when the locking member 41 is subjected to an external force and moves from the first position A to the second position B, the telescopic member 43 built into the locking member 41 is squeezed by the side wall of the accommodating space 415 and shrinks. When the external force on the locking member 41 is removed and the locking member 41 returns to the second position B from the first position A, the telescopic member 43 stretches to push the locking member 41 to contact the limiting member 42, thereby preventing the threaded sleeve 31 from rotating in the opposite direction, so as to further strengthen the assembly connection between the first arm 1 and the second arm 2.

[0078] Further, such as Figure 8 As shown, the fixing member 11 has a connecting portion 111 and a second limiting portion 112;

[0079] The connecting portion 111 passes through the runway hole 413 until the second limiting portion 112 presses the locking member 41 tightly against the first machine arm 1 , thereby achieving the assembly of the locking member 41 on the first machine arm 1 .

[0080] Further, such as Fig. 9 As shown, the locking member 41 further includes a gripping portion 414; the gripping portion 414 extends upward from the surface of the locking member 41, so that the user pushes the locking member 41 from the gripping portion 414, thereby causing the locking member 41 to move.

[0081] In some other usage scenarios, the locking members 41 in the present technical solution also have at least two, which are arranged in multiple places according to actual needs, such as Fig.10 As shown, the locking members 41 are arranged on both sides of the first machine arm 1 , and the two locking members 41 are in contact with the limiting members 42 respectively, so as to better prevent the threaded sleeve 31 from rotating in the opposite direction relative to the threaded portion 32 .

[0082] In summary, a drone, including a drone arm as described above, when used in the drone, can not only enable the drone to be disassembled to make its size more compact, but also prevent the disassembled connection from separating during flight, thereby affecting the normal use of the drone.

[0083] According to the disclosure and teaching of the above description, the technical personnel in the field to which the utility model belongs can also change and modify the above implementation. Therefore, the utility model is not limited to the specific implementation methods disclosed and described above, and some modifications and changes to the utility model should also fall within the scope of protection of the claims of the utility model. In addition, although some specific terms are used in this specification, these terms are only for the convenience of description and do not constitute any limitation to the utility model.

Claims

1. An unmanned aerial vehicle arm, comprising a first arm and a second arm, and a connecting device for detachably connecting the first arm and the second arm, wherein the connecting device comprises a threaded sleeve movably connected to the first arm and a threaded portion provided at the second arm, wherein the threaded sleeve rotates forwardly relative to the threaded portion to achieve threaded connection, and wherein: It also includes a locking device, which includes a locking member provided on the first machine arm and a limiting member provided on the threaded sleeve; The locking member contacts the limiting member so that the threaded sleeve cannot rotate in the opposite direction relative to the threaded portion.

2. The drone arm according to claim 1, characterized in that: The locking member has a protrusion; The limiting member has a recessed portion; The protrusion is sunken into the recessed portion so that the threaded sleeve cannot generate reverse rotation relative to the threaded portion.

3. The drone arm according to claim 1, characterized in that: The locking device also includes a telescopic member; The telescopic member is connected to the locking member; When the locking member is subjected to an external force, the telescopic member telescopes during the process of the locking member moving from the first position to the second position; When the external force of the locking member is removed, the telescopic member resumes its extension to push the locking member to contact the limiting member so that the threaded sleeve cannot generate reverse rotation relative to the threaded portion.

4. The drone arm according to claim 1, characterized in that: The locking member has a blind hole; The blind hole is axially arranged from the side surface of the locking member toward the interior of the locking member.

5. The drone arm according to claim 1, characterized in that: The first machine arm is provided with a fixing piece; The fixing member has a connecting portion and a second limiting portion; The locking member has a racetrack hole, and the racetrack hole is recessed inwardly from the surface of the locking member to the back side thereof; The connecting portion passes through the runway hole until the second limiting portion presses the locking member tightly against the first machine arm.

6. The drone arm according to claim 1, characterized in that: The locking member further includes a gripping portion; The grip portion extends upward from a surface of the locking member.

7. The drone arm according to claim 1, characterized in that: The locking members have at least two; The two locking members are in contact with the limiting members respectively.

8. The drone arm according to claim 1, characterized in that: The first arm has a first guide portion, and the first guide portion includes a guide groove; The second machine arm has a second guide portion, and the second guide portion includes a guide block; The guide groove is used for assembling the guide block.

9. The drone arm according to claim 8, characterized in that: The notch of the guide groove has a first guide surface; The end of the guide block has a second guide surface; The first guiding surface and the second guiding surface are parallel to each other.

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