Arm structure of unmanned aerial vehicle

Abstract

The utility model provides an arm structure of an unmanned aerial vehicle, and belongs to the technical field of unmanned aerial vehicles. Comprising an unmanned aerial vehicle body, a vehicle arm assembly for assisting the unmanned aerial vehicle in flying is installed on the side edge of the unmanned aerial vehicle body, the vehicle arm assembly comprises a connecting base fixed to the side edge of the unmanned aerial vehicle body, a first extension arm is installed on the connecting base in a clamped mode, and a containing cavity is formed in the first extension arm; and a second extension arm is slidably arranged in the containing cavity, one end of the second extension arm extends out of the containing cavity, a mounting base is fixed to the end, extending out of the containing cavity, of the second extension arm, a motor is mounted at the top of the mounting base, and a rotor wing is mounted at the top of the motor. After the vehicle arm is damaged, the first extension arm and the second extension arm can be rapidly and integrally disassembled, and the situation that when the vehicle arm is damaged or fractured, disassembly and replacement are inconvenient due to the fact that no professional tool exists is avoided as much as possible.

Description

Technical Field

[0001] The utility model relates to the technical field of unmanned aerial vehicles (UAVs), in particular to an arm structure of a UAV. Background Art

[0002] The drone arm is a crucial moving device on the payload platform, boasting a sophisticated structure and diverse functions. The arm typically consists of a base connector, a telescopic arm, and an end effector. The base connector is securely mounted to the payload platform, providing stable support for the arm. The telescopic arm features a folding design, accommodating complex movements while facilitating quick folding, enhancing the drone's flexibility and portability. The arm is primarily constructed from lightweight, high-strength materials such as carbon fiber, ensuring a robust structure and low weight, which contributes to the drone's flight performance and payload capacity. Furthermore, the arm's design takes balance and stability into account, ensuring the drone remains stable in all flight conditions.

[0003] The existing arm structure mostly uses positioning bolts to achieve the overall fixed positioning of the arm during installation. When the arm structure is damaged or broken, professional disassembly tools are required for removal and replacement, and the overall operation is relatively cumbersome. Therefore, this application provides an arm structure of a drone to meet the needs. Utility Model Content

[0004] The technical problem to be solved by the present invention is to provide an arm structure of a UAV to solve the problem that the existing arm structure mostly adopts the positioning bolt positioning method to achieve the overall fixed positioning of the arm during installation. When the arm structure is damaged or broken, professional disassembly tools are required for removal and replacement, and the overall operation is relatively cumbersome.

[0005] In order to solve the above technical problems, the present invention provides the following technical solutions:

[0006] A drone arm structure includes a drone body, with an arm assembly for assisting the drone flight installed on the side of the drone body, the arm assembly including a connecting seat fixed to the side of the drone body, a first extension arm being clamped and installed on the connecting seat, a receiving cavity being defined on the first extension arm, a second extension arm being slidably arranged in the receiving cavity, one end of the second extension arm extending out of the receiving cavity, a mounting seat being fixed to the end of the second extension arm extending out of the receiving cavity, a motor being installed at the top of the mounting seat, and a rotor being installed at the top of the motor.

[0007] Optionally, an insertion cavity is provided on a side of the connecting seat facing the first extension arm, and a protruding column is provided on one end of the first extension arm facing the connecting seat, and the insertion cavity and the protruding column are plugged in with each other.

[0008] Optionally, a clamping block is symmetrically protruded in the insertion cavity of the connecting seat, an L-shaped clamping groove is provided at the outer edge of the protruding column, and the clamping block is plugged into the clamping groove.

[0009] Optionally, a positioning hole is provided on the outer side of the connecting seat, and the first extension arm is provided with a positioning cavity at one end of the protruding column, and a positioning component that is plugged into the positioning hole is installed in the positioning cavity.

[0010] Optionally, the positioning assembly includes an embedded disk rotatably embedded in the outer surface of the first extension arm, a bevel gear ring is fixed at one end of the embedded disk, a positioning block is slidingly arranged in the positioning cavity, a screw rod is rotatably arranged in the positioning cavity, the screw rod is passed through and installed in the positioning block, the screw rod and the positioning block are threadedly matched, a bevel gear is fixed at one end of the positioning block, and the bevel gear and the bevel gear ring are meshed for transmission.

[0011] Optionally, a plurality of balls are embedded and installed at the bottom of the embedded disk, and the plurality of balls are arranged in a circular array with the center of the embedded disk as the center.

[0012] Optionally, a limiting block is protruding from the top of one end of the first extension arm, and a limiting slot is provided at the top of the second extension arm, and the limiting block and the limiting slot slide in cooperation with each other.

[0013] Optionally, a fixing component for assisting the clamping of the second extension arm is installed at one end of the first extension arm away from the protruding column.

[0014] Optionally, the fixing assembly includes a protruding ring symmetrically fixed on one end of the first extension arm away from the protruding column, the protruding ring is sleeved with a sleeve ring, a conical clamping groove is provided on the sleeve ring, the clamping groove is threadedly engaged with the protruding ring, and a rotating ring is sleeved and fixed on the sleeve ring.

[0015] Optionally, the protruding ring is an arc-shaped plate structure, and a plurality of clamping tooth rings are protrudingly provided at the inner edge of the protruding ring.

[0016] Compared with the prior art, the present invention has at least the following beneficial effects:

[0017] In the above solution, by cooperating between the connecting seat and the clamping block provided on the drone body and the protruding column and the clamping groove on the first extension arm, the protruding column is inserted and installed in the insertion cavity, and the clamping groove and the clamping block are slid in cooperation, and the first extension arm is rotated, and the protruding column is clamped and installed in the corresponding insertion cavity, thereby completing the preliminary positioning process of the first extension arm. When the aircraft arm is damaged, the first extension arm and the second extension arm can be quickly disassembled as a whole, and the situation in which it is inconvenient to disassemble and replace the aircraft arm without professional tools when the aircraft arm is damaged or broken is avoided as much as possible.

[0018] By cooperating with the provided positioning holes and the positioning components, the embedded disk is reversed, and the embedded disk drives the bevel gear ring to rotate, and the bevel gear ring and the bevel gear are meshed and transmitted, thereby rotating the bevel gear and the screw rod, and the screw rod is threadedly matched with the positioning block, so that the positioning block is inserted and installed in the corresponding positioning hole, thereby completing the positioning and fastening processing of the connecting seat and the first extension arm. After the initial positioning, the position of the connecting seat and the first extension arm can be limited to ensure the overall connection tightness of the connection, thereby avoiding the occurrence of unstable connection between the connecting seat and the first extension arm;

[0019] By setting up a fixing component, the sleeve ring is rotated, and the clamping groove on the sleeve ring is threadedly engaged with the outer edge of the protruding ring, so that the protruding ring is clamped toward the center, and then the second extension arm is auxiliary clamped, thereby ensuring that the second extension arm is extended to the corresponding length and remains positioned. During work, the second extension arm can be conveniently adjusted to the desired length according to different work requirements, thereby adapting to the installation requirements of the arm length of drones of different lengths, thereby improving the overall practicality of the device. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] The accompanying drawings, which are incorporated herein and constitute part of the specification, illustrate embodiments of the invention and, together with the description, further serve to explain the principles of the invention and enable those skilled in the relevant art to make and use the invention.

[0021] Figure 1 This is a schematic diagram of the three-dimensional structure of the UAV's arm structure;

[0022] Figure 2 A schematic diagram of the three-dimensional structure of the arm structure and arm assembly of the UAV;

[0023] Figure 3 The arm structure of the drone Figure 1 Schematic diagram of the enlarged structure at A in the middle;

[0024] Figure 4 A longitudinal cross-sectional view of the first extension arm of the UAV's arm structure corresponding to the positioning assembly;

[0025] Figure 5 The arm structure of the drone Figure 1 Schematic diagram of the enlarged structure at point B in the middle.

[0026] [reference numerals]

[0027] 1. UAV body; 2. Arm assembly; 3. Connecting seat; 31. Snap-on block; 32. Positioning hole; 4. First extension arm; 41. Protruding column; 411. Snap-on slot; 42. Positioning assembly; 421. Embedded disk; 4211. Ball bearing; 422. Bevel gear ring; 423. Bevel gear; 424. Screw; 43. Positioning block; 44. Limit block; 5. Second extension arm; 51. Limiting slot; 52. Fixing assembly; 521. Sleeve ring; 522. Rotating ring; 523. Protruding ring; 524. Clamping gear ring; 6. Mounting seat; 7. Motor.

[0028] As shown in the figure, in order to clearly implement the structure of the embodiment of the present invention, specific structures and devices are marked in the figure, but this is only for illustrative purposes and is not intended to limit the present invention to the specific structure, devices and environment. According to specific needs, ordinary technicians in this field can adjust or modify these devices and environments. DETAILED DESCRIPTION

[0029] The following describes in detail the arm structure of a drone provided by the present invention, with reference to the accompanying drawings and specific embodiments. It is also noted that, for the sake of completeness, the following embodiments are best and preferred, and those skilled in the art may employ alternative implementations for known technologies. Furthermore, the accompanying drawings are intended only to provide a more detailed description of the embodiments and are not intended to limit the present invention.

[0030] It should be noted that references in the specification to "one embodiment," "an embodiment," "an exemplary embodiment," "some embodiments," etc. indicate that the described embodiments may include specific features, structures, or characteristics, but not every embodiment necessarily includes such specific features, structures, or characteristics. In addition, when specific features, structures, or characteristics are described in conjunction with an embodiment, it is within the knowledge of persons skilled in the relevant art to implement such features, structures, or characteristics in conjunction with other embodiments (whether or not explicitly described).

[0031] In general, terms can be understood, at least in part, from their use in context. For example, depending at least in part on the context, the term "one or more" as used herein can be used to describe any feature, structure, or characteristic in the singular sense, or can be used to describe a combination of features, structures, or characteristics in the plural sense. Additionally, the term "based on" can be understood as not necessarily intended to convey an exclusive set of factors, but can instead, depending at least in part on the context, allow for the presence of other factors that are not necessarily explicitly described.

[0032] It will be understood that the meanings of “on,” “over,” and “above” in the present invention should be interpreted in the broadest manner, so that “on” means not only “directly on” something but also includes the meaning of being “on” something with intervening features or layers, and “on” or “above” means not only “on” or “above” something but also includes the meaning of being “on” or “above” something with no intervening features or layers.

[0033] Additionally, spatially relative terms such as "below," "beneath," "lower," "above," and "upper" may be used herein for descriptive convenience to describe the relationship of one element or feature to another element or features, as illustrated in the accompanying drawings. Spatially relative terms are intended to encompass different orientations of the device in use or operation in addition to the orientation depicted in the accompanying drawings. The device may be oriented in other ways, and the spatially relative descriptors used herein should be similarly interpreted accordingly.

[0034] like Figure 1 and Figure 2 As shown, an embodiment of the present invention provides an arm structure of a drone, including a drone body 1, an arm assembly 2 for assisting the drone flight is installed on the side of the drone body 1, the arm assembly 2 includes a connecting seat 3 fixed on the side of the drone body 1, a first extension arm 4 is clamped and installed on the connecting seat 3, the first extension arm 4 is provided with an accommodating cavity, a second extension arm 5 is slidably arranged in the accommodating cavity, one end of the second extension arm 5 extends out of the accommodating cavity, and a mounting seat 6 is fixed to the end of the second extension arm 5 extending out of the accommodating cavity, a motor 7 is installed at the top of the mounting seat 6, and a rotor is installed at the top of the motor 7.

[0035] Reference Figure 1 、 Figure 3 and Figure 4 As shown, the connecting seat 3 is provided with an insertion cavity on one side facing the first extension arm 4, and a protruding column 41 is protruding from one end of the first extension arm 4 facing the connecting seat 3, and the insertion cavity and the protruding column 41 are plugged in with each other, and a snap-in block 31 is symmetrically protruded in the insertion cavity of the connecting seat 3, and an L-shaped snap-in groove 411 is provided at the outer edge of the protruding column 41, and the snap-in block 31 and the snap-in groove 411 are plugged in with each other.

[0036] By cooperating between the connecting seat 3 and the clamping block 31 on the drone body 1 and the protruding column 41 and the clamping groove 411 on the first extension arm 4, the protruding column 41 is inserted and installed in the insertion cavity, and the clamping groove 411 is made to slide with the clamping block 31, and the first extension arm 4 is rotated, and then the protruding column 41 is clamped and installed in the corresponding insertion cavity, thereby completing the preliminary positioning processing of the first extension arm 4. After the arm is damaged, the first extension arm 4 and the second extension arm 5 can be quickly dismantled as a whole, and the situation where the arm is damaged or broken and it is inconvenient to disassemble and replace it without professional tools can be avoided as much as possible.

[0037] A positioning hole 32 is provided on the outer edge of the above-mentioned connecting seat 3, and a positioning cavity is provided on one end of the first extension arm 4, and a positioning component 42 that cooperates with the positioning hole 32 is installed in the positioning cavity. The positioning component 42 includes an embedded disk 421 that is rotatably embedded in the outer surface of the first extension arm 4, and a bevel gear ring 422 is fixed at one end of the embedded disk 421. A positioning block 43 is slidingly provided in the positioning cavity, and a screw rod 424 is rotatably provided in the positioning cavity. The screw rod 424 is passed through and installed in the positioning block 43, and the screw rod 424 is threadedly matched with the positioning block 43. A bevel gear 423 is fixed at one end of the positioning block 43, and the bevel gear 423 and the bevel gear ring 422 are engaged for transmission.

[0038] Through the cooperation between the provided positioning hole 32 and the positioning component 42, the embedded disk 421 is reversed, and the embedded disk 421 drives the bevel gear ring 422 to rotate, and the bevel gear ring 422 and the bevel gear 423 are meshed and transmitted, thereby rotating the bevel gear 423 and rotating the screw rod 424. The screw rod 424 is threadedly engaged with the positioning block 43, so that the positioning block 43 is inserted and installed in the corresponding positioning hole 32, thereby completing the positioning and fastening processing of the connecting seat 3 and the first extension arm 4. After the initial positioning, the position of the connecting seat 3 and the first extension arm 4 is limited to ensure the overall connection tightness of the connection, thereby avoiding the occurrence of unstable connection between the connecting seat 3 and the first extension arm 4.

[0039] A plurality of balls 4211 are embedded and installed at the bottom of the embedded disk 421. The balls 4211 are arranged in a circular array with the center of the embedded disk 421 as the center. The balls 4211 arranged in the circular array can reduce the overall friction when the embedded disk 421 rotates.

[0040] like Figure 1 、 Figure 2 and Figure 5As shown, a limiting block 44 is protrudingly provided at the top of one end of the first extension arm 4, and a limiting groove 51 is provided at the top of the second extension arm 5. The limiting block 44 and the limiting groove 51 cooperate and slide with each other. A fixing component 52 for assisting the clamping of the second extension arm 5 is installed at the end of the first extension arm 4 away from the protruding column 41. The fixing component 52 includes a protruding ring 523 symmetrically fixed at the end of the first extension arm 4 away from the protruding column 41. The protruding ring 523 is sleeved with a sleeve ring 521. A conical clamping groove is provided on the sleeve ring 521. The clamping groove and the protruding ring 523 are threadedly matched. A rotating ring 522 is sleeved and fixed on the sleeve ring 521.

[0041] By setting up the fixing component 52, the sleeve ring 521 is rotated, and the clamping groove on the sleeve ring 521 is threadedly engaged with the outer edge of the protruding ring 523, so that the protruding ring 523 is clamped toward the center, and then the second extension arm 5 is auxiliary clamped, thereby ensuring that the second extension arm 5 is extended to the corresponding length and remains in position, and the second extension arm 5 can be conveniently adjusted to the desired length according to different work requirements during work, thereby adapting to the installation requirements of drones of different lengths and improving the overall practicality of the device.

[0042] The protruding ring 523 is an arc-shaped plate structure, and a plurality of clamping tooth rings 524 are protrudingly provided on the inner edge of the protruding ring 523 .

[0043] By providing a plurality of clamping tooth rings 524 , the overall clamping effect can be improved when the second extension arm 5 is clamped, thereby preventing the second extension arm 5 from becoming loose.

[0044] The working principle of the technical solution provided by the utility model is as follows:

[0045] During operation, when the arm assembly 2 needs to be installed, the protruding column 41 is inserted and installed in the insertion cavity, and the snap-in groove 411 is made to slide with the snap-in block 31, and the first extension arm 4 is rotated, and the protruding column 41 is snap-in installed in the corresponding insertion cavity, thereby completing the preliminary positioning processing of the first extension arm 4.

[0046] After the initial positioning, the embedded disk 421 is reversed, and the embedded disk 421 drives the bevel gear ring 422 to rotate. The bevel gear ring 422 and the bevel gear 423 are engaged with each other, thereby rotating the bevel gear 423 and rotating the screw rod 424. The screw rod 424 is threadedly engaged with the positioning block 43, so that the positioning block 43 is inserted and installed in the corresponding positioning hole 32, thereby completing the positioning and fastening of the connecting seat 3 and the first extension arm 4.

[0047] When it is necessary to adjust the overall extension length of the second extension arm 5, the second extension arm 5 is adjusted to the specified length, and the sleeve ring 521 is rotated. The clamping groove on the sleeve ring 521 is threadedly engaged with the outer edge of the protruding ring 523, so that the protruding ring 523 is clamped toward the center, and the second extension arm 5 is auxiliary clamped, thereby ensuring that the second extension arm 5 is extended to the corresponding length and remains in position.

[0048] This invention encompasses any alternatives, modifications, equivalents, and solutions that do not depart from the spirit and scope of this invention. To provide a thorough understanding of this invention, specific details are described in detail in the following preferred embodiments of this invention, but those skilled in the art will be able to fully understand this invention without these detailed descriptions. Furthermore, to avoid unnecessary confusion regarding the essence of this invention, well-known methods, processes, procedures, components, and circuits are not described in detail.

[0049] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principles of the present invention. These improvements and modifications should also be regarded as within the scope of protection of the present invention.

Claims

1. An arm structure of a drone, characterized in that: It includes a drone body, on the side of which is installed an arm assembly for assisting the drone in flying, the arm assembly includes a connecting seat fixed to the side of the drone body, a first extension arm is clamped and installed on the connecting seat, the first extension arm is provided with an accommodating cavity, a second extension arm is slidably arranged in the accommodating cavity, one end of the second extension arm extends out of the accommodating cavity, and a mounting seat is fixed to the end of the second extension arm extending out of the accommodating cavity, a motor is installed at the top of the mounting seat, and a rotor is installed at the top of the motor.

2. The drone arm structure according to claim 1, characterized in that: An insertion cavity is provided on one side of the connecting seat facing the first extension arm, and a protruding column is provided on one end of the first extension arm facing the connecting seat, and the insertion cavity and the protruding column are plugged in with each other.

3. The drone arm structure according to claim 2, characterized in that: A clamping block is symmetrically protruded in the insertion cavity of the connecting seat, and an L-shaped clamping groove is opened at the outer edge of the protruding column. The clamping block is plugged into the clamping groove.

4. The drone arm structure according to claim 3, characterized in that: A positioning hole is provided on the outer side of the connecting seat, and a positioning cavity is provided at one end of the protruding column. A positioning component that is plugged into the positioning hole is installed in the positioning cavity.

5. The drone arm structure according to claim 4, characterized in that: The positioning assembly includes an embedded disk rotatably embedded in the outer surface of the first extension arm, one end of the embedded disk is fixed with a bevel gear ring, a positioning block is slidably provided in the positioning cavity, a screw rod is rotatably provided in the positioning cavity, the screw rod is passed through and installed in the positioning block, the screw rod and the positioning block are threadedly matched, a bevel gear is fixed at one end of the positioning block, and the bevel gear and the bevel gear ring are meshed for transmission.

6. The drone arm structure according to claim 5, characterized in that: A plurality of balls are embedded and installed at the bottom of the embedding plate, and the balls are arranged in a ring array with the center of the embedding plate as the center.

7. The drone arm structure according to claim 1, characterized in that: A limiting block is protruding from the top of one end of the first extension arm, and a limiting slot is provided at the top of the second extension arm, and the limiting block and the limiting slot cooperate and slide with each other.

8. The drone arm structure according to claim 7, characterized in that: A fixing assembly for assisting the second extension arm in clamping is installed on one end of the first extension arm away from the protruding column.

9. The drone arm structure according to claim 8, characterized in that: The fixing assembly includes a protruding ring symmetrically fixed on the end of the first extension arm away from the protruding column. The protruding ring is sleeved with a sleeve ring. The sleeve ring is provided with a conical clamping groove. The clamping groove is threadedly engaged with the protruding ring. A rotating ring is sleeved and fixed on the sleeve ring.

10. The drone arm structure according to claim 9, characterized in that: The protruding ring is an arc-shaped plate structure, and a plurality of clamping tooth rings are protrudingly provided on the inner edge of the protruding ring.

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