A dual-gimbal assembly for a multi-rotor UAV

Abstract

This utility model relates to the field of drone gimbals and discloses a dual-gimbal assembly for a multi-rotor drone, including a fixed bracket and two gimbal bodies. The fixed bracket is used to fix the drone and has two sets of symmetrically arranged connection holes. A quick-release structure is installed on each gimbal body, with each quick-release structure corresponding to one set of connection holes. The quick-release structure includes a connecting rod, a retaining ring, and an elastic element. The connecting rod passes through the connection hole, with one end fixed to the gimbal body and the other end having several circumferentially arranged locking blocks. The fixed bracket has a through groove on the inner wall of the connection hole for the locking blocks to pass through. The retaining ring is slidably fitted onto the connecting rod axially, and the elastic element is installed between the retaining ring and the gimbal body. This utility model can reduce the difficulty of assembling and disassembling the gimbal body, improve the portability of the gimbal body, and also adjust the relative position of the two gimbal bodies.

Description

Technical Field

[0001] This utility model relates to the field of unmanned aerial vehicle (UAV) gimbal technology, and in particular to a dual gimbal assembly for a multi-rotor UAV. Background Technology

[0002] Multirotor drones are unmanned aerial vehicles with three or more rotor axes. They control their trajectory by changing the rotational speed of different rotors and consist of a fuselage, power system, flight control system, etc. They achieve flight based on Newton's third law and have made breakthroughs in wind resistance and obstacle avoidance technologies. They are widely used in agriculture, power, rescue and other fields. To meet the needs of simultaneous execution of multiple tasks, multirotor drones usually use a dual-gimbal assembly to carry two identical or different sensors. For example, the DJI M350 RTK is equipped with a dual-gimbal structure, which can simultaneously mount a LiDAR and a visible light camera, or an infrared thermal imager and a high-resolution lens.

[0003] Existing dual-gimbal assemblies consist of a fixed bracket and two gimbal bodies, which are mounted side-by-side on the bracket, which is then fixed to the drone. In certain scenarios, the dual-gimbal structure often requires disassembling the gimbal bodies, such as for gimbal body troubleshooting, sensor removal / replacement, or sensor replacement. However, existing gimbal bodies are primarily fixed to the bracket with bolts, increasing the difficulty of disassembly and reducing the portability of the gimbal bodies. Summary of the Invention

[0004] In view of this, the purpose of this utility model is to provide a dual gimbal assembly for a multi-rotor UAV, which solves the problem mentioned in the background art that the existing gimbal body is mainly fixed to the fixed bracket by bolts, which reduces the portability of the gimbal body assembly and disassembly.

[0005] This utility model solves the above-mentioned technical problems through the following technical means:

[0006] A dual-gimbal assembly for a multi-rotor unmanned aerial vehicle (UAV), characterized in that it comprises:

[0007] A mounting bracket is used to fix the device to a drone, and the mounting bracket has two sets of symmetrically arranged connection holes.

[0008] Two gimbal bodies, each gimbal body is equipped with a quick-release structure, and each quick-release structure of the gimbal body corresponds to one set of the connecting holes;

[0009] The quick-release structure includes a connecting rod, a retaining ring, and an elastic element. The connecting rod can pass through the connecting hole. One end of the connecting rod is fixed to the gimbal body, and the other end is provided with several locking blocks in the circumferential direction. The fixing bracket has a through groove on the inner wall of the connecting hole for the locking blocks to pass through. The retaining ring is slidably sleeved on the connecting rod in the axial direction, and the elastic element is installed between the retaining ring and the gimbal body.

[0010] In one possible implementation, the fixing bracket has a slot at the end of the connection hole opposite to the gimbal body that is adapted to the card block, and the card block can be snapped into the slot.

[0011] With the above technical solution, when the gimbal body needs to be installed on the fixed bracket, the connecting rod can be aligned with the connecting hole and the locking block with the through slot, allowing the connecting rod to pass through the connecting hole. After the locking block passes through the through slot, the connecting rod is rotated to misalign the locking block and the through slot. At this point, the retaining ring, under the elastic force of the elastic element, can abut against one side of the fixed bracket, while the locking block abuts against the other side of the fixed bracket, thus fixing the gimbal body to the fixed bracket. When the gimbal body needs to be removed from the fixed bracket, the connecting rod can be rotated directly to align the locking block with the through slot. Under the elastic force of the elastic element, the connecting rod can disengage from the connecting hole, allowing the gimbal body to be separated from the fixed bracket. This quick-release structure reduces the difficulty of assembling and disassembling the gimbal body and improves its portability. In addition, the structure of the fixed bracket and the quick-release structure is relatively simple, does not excessively increase the weight of the drone, and is highly practical.

[0012] In one possible implementation, each group of connection holes includes a plurality of connection holes arranged at equal intervals.

[0013] In one possible implementation, the elastic element is a helical spring or a disc spring.

[0014] In one possible implementation, a first gasket is mounted on the abutment ring, a second gasket is mounted on the gimbal body, and the two ends of the elastic member abut against the first gasket and the second gasket, respectively.

[0015] In one possible implementation, a plurality of connectors are fixed on the fixed bracket, and a positioning mounting plate is fixed to one end of each connector away from the fixed bracket. The positioning mounting plate is mounted on the drone by bolts.

[0016] In one possible implementation, the positioning mounting plate is provided with a plurality of lugs, and the lugs are provided with bolt holes for bolts to pass through.

[0017] In one possible implementation, the edge of the connecting rod away from the gimbal body is provided with a first guide surface.

[0018] In one possible implementation, the fixing bracket has a second guide surface at the edge of the end of the connecting hole facing the gimbal body.

[0019] The beneficial effects of this utility model are:

[0020] 1. By adopting the technical solution of this application, when the gimbal body needs to be installed on the fixed bracket, the connecting rod can be directly aligned with the connecting hole and the locking block with the through slot, allowing the connecting rod to pass through the connecting hole. After the locking block passes through the through slot, the connecting rod is rotated to misalign the locking block and the through slot. At this time, the retaining ring can abut against one side of the fixed bracket under the elastic force of the elastic element, while the locking block abuts against the other side of the fixed bracket, thereby fixing the gimbal body on the fixed bracket. When the gimbal body needs to be removed from the fixed bracket, the connecting rod can be directly rotated to align the locking block with the through slot. Under the elastic force of the elastic element, the connecting rod can disengage from the connecting hole, thus separating the gimbal body from the fixed bracket. This quick-release structure reduces the difficulty of assembling and disassembling the gimbal body and improves the portability of assembling and disassembling the gimbal body. In addition, the structure of the fixed bracket and the quick-release structure is relatively simple, does not excessively increase the weight of the drone, and is highly practical.

[0021] 2. Through the cooperation of the locking block and the locking slot, during the installation of the gimbal body, after the connecting rod passes through the connecting hole and the locking block passes through the through slot, rotating the connecting rod causes the locking block to quickly enter the locking slot under the elastic force of the elastic element. This causes the connecting rod to bounce and emit a striking sound, reminding the operator that the quick-release structure has been installed correctly. Furthermore, the cooperation of the locking block and the locking slot restricts the axial rotation of the connecting rod, making the gimbal body more stable.

[0022] 3. By setting multiple connection holes, this application allows operators to adjust the relative positions of the two gimbal bodies according to the actual situation, thereby enabling the sensors on the gimbal bodies to perform better and also facilitating the adjustment of the drone's balance. Attached Figure Description

[0023] To more clearly illustrate the technical solutions in the embodiments of this application 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 application. For those skilled in the art, other drawings can be obtained based on the structures shown in these drawings without creative effort.

[0024] Figure 1 This is a schematic diagram of the structure of a dual-gimbal assembly for a multi-rotor unmanned aerial vehicle (UAV) according to an embodiment of this application. Figure 1 ;

[0025] Figure 2 This is an embodiment of the present application. Figure 1 Enlarged view of point A in the middle;

[0026] Figure 3 This is a schematic diagram of the structure of a dual-gimbal assembly for a multi-rotor unmanned aerial vehicle (UAV) according to an embodiment of this application. Figure 2 ;

[0027] Figure 4 This is an embodiment of the present application. Figure 3 Enlarged view of point B in the middle;

[0028] Figure 5 This is a structural schematic diagram of the gimbal body and quick-release structure in the embodiments of this application;

[0029] Explanation of reference numerals in the attached drawings: 100, fixed bracket; 110, connecting hole; 111, second guide surface; 120, through groove; 130, slot; 140, connector; 150, positioning mounting plate; 151, lug; 152, bolt hole; 200, gimbal body; 210, second gasket; 310, connecting rod; 311, locking block; 312, first guide surface; 320, abutment ring; 321, first gasket; 330, elastic element. Detailed Implementation

[0030] The following specific embodiments illustrate the implementation of this utility model. Those skilled in the art can understand the advantages and effects of this utility model from the content disclosed in this specification. It should be noted that the illustrations provided in the following embodiments are for illustrative purposes only and represent schematic diagrams, not actual pictures. They should not be construed as limiting the utility model. To better illustrate the embodiments of this utility model, some components in the figures may be omitted, enlarged, or reduced, and do not represent the actual product dimensions. It is understandable that some well-known structures and their descriptions may be omitted in the figures for those skilled in the art.

[0031] In the figures of this utility model embodiment, the same or similar reference numerals correspond to the same or similar components. In the description of this utility model, it should be understood that if terms such as "upper", "lower", "left", "right", "front", "rear", etc. indicate the orientation or positional relationship based on the orientation or positional relationship shown in the figure, they are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or component referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, the terms used to describe the positional relationship in the figure are only for illustrative purposes and should not be construed as limiting this utility model. For those skilled in the art, the specific meaning of the above terms can be understood according to the specific circumstances.

[0032] like Figures 1-5As shown in the figure, this application embodiment provides a dual gimbal assembly for a multi-rotor UAV, including a fixed bracket 100 and two gimbal bodies 200. The fixed bracket 100 is used to fix itself to the UAV and has two sets of symmetrically arranged connection holes 110. The gimbal body 200 can be a dual-axis gimbal or a three-axis gimbal, selected according to the actual situation. A quick-release structure is installed on the gimbal body 200, with each gimbal body 200's quick-release structure corresponding to one set of connection holes 110. That is, the gimbal body 200 can be connected to the fixed bracket 100 through the quick-release structure and the connection holes 110. The quick-release structure includes a connecting rod 310, a retaining ring 320, and an elastic element 330. The connecting rod 310 can pass through the connection hole 110, and the diameter of the connecting rod 310 is less than or equal to the diameter of the connection hole 110. In this embodiment, the diameter of the connecting rod 310 can be equal to the diameter of the connection hole 110. One end of the connecting rod 310 is fixed to the gimbal body 200, and the other end is provided with at least two locking blocks 311 circumferentially. The fixing bracket 100 has a through groove 120 on the inner wall of the connecting hole 110 for the locking blocks 311 to pass through. The abutment ring 320 is slidably sleeved on the connecting rod 310 along the axial direction. The elastic element 330 is installed between the abutment ring 320 and the gimbal body 200. When the gimbal body 200 is not installed on the fixing bracket 100, the abutment ring 320 abuts against the locking blocks 311 under the elastic force of the elastic element 330.

[0033] With the above technical solution, when the gimbal body 200 needs to be installed on the fixed bracket 100, the connecting rod 310 can be directly aligned with the connecting hole 110 and the locking block 311 aligned with the through groove 120, so that the connecting rod 310 passes through the connecting hole 110. After the locking block 311 passes through the through groove 120, the connecting rod 310 is rotated to make the locking block 311 and the through groove 120 misaligned. At this time, the abutment ring 320 can abut against the fixed bracket under the elastic force of the elastic element 330. The gimbal body 200 is fixed to one side of the bracket 100, while the locking block 311 abuts against the other side of the fixed bracket 100. When it is necessary to remove the gimbal body 200 from the fixed bracket 100, the connecting rod 310 can be rotated directly, so that the locking block 311 aligns with the through slot 120. Under the elastic force of the elastic element 330, the connecting rod 310 can disengage from the connecting hole 110, thus separating the gimbal body 200 from the fixed bracket 100. This quick-release structure reduces the difficulty of assembling and disassembling the gimbal body 200 and improves its portability. In addition, the structure of the fixed bracket 100 and the quick-release structure is relatively simple, does not excessively increase the weight of the drone, and is highly practical.

[0034] In one possible embodiment, the fixed bracket 100 has a slot 130 at the end of the connecting hole 110 opposite to the gimbal body 200, which is adapted to the locking block 311. The locking block 311 can be engaged into the slot 130. With this arrangement, during the installation of the gimbal body 200, after the connecting rod 310 passes through the connecting hole 110 and the locking block 311 passes through the through slot 120, and then the connecting rod 310 is rotated, when the locking block 311 encounters the slot 130, under the elastic force of the elastic element 330, the locking block 311 can quickly enter the slot 130, causing the connecting rod 310 to jump and emit a striking sound, reminding the operator that the quick-release structure has been installed in place. In addition, through the cooperation of the locking block 311 and the slot 130, the axial rotation of the connecting rod 310 can be restricted, making the gimbal body 200 more stable.

[0035] In one possible embodiment, each set of connection holes 110 includes several connection holes 110 arranged at equal intervals. With this design, the operator can adjust the relative position of the two gimbal bodies 200 according to the actual situation, so that the sensors on the gimbal bodies 200 can perform better, and it is also convenient to adjust the balance of the drone.

[0036] In one possible embodiment, the elastic element 330 can be a coil spring or a disc spring. The elastic element 330 can be sleeved on the connecting rod 310. Using a disc spring provides greater stability to the quick-release structure, while using a coil spring makes assembly and disassembly of the quick-release structure easier.

[0037] In this embodiment, a first gasket 321 is installed on the abutment ring 320, and a second gasket 210 is installed on the gimbal body 200. The two ends of the elastic member 330 abut against the first gasket 321 and the second gasket 210, respectively. The first gasket 321 and the second gasket 210 provide protection for the gimbal body 200 and the abutment ring 320, preventing damage to them from the elastic member 330.

[0038] In one possible embodiment, a plurality of connectors 140 are fixed on the fixed bracket 100. The connectors 140 are rod-shaped structures, and a positioning mounting plate 150 is fixed to one end of the connector 140 away from the fixed bracket 100. The positioning mounting plate 150 is mounted on the drone by bolts. Specifically, the positioning mounting plate 150 is provided with a plurality of lugs 151, and bolt holes 152 are provided on the lugs 151 for bolts to pass through.

[0039] In another embodiment, the positioning mounting plate 150 can also be fixed to the drone by means of snap-fit, welding, or bonding. The specific installation method can be determined according to the actual situation.

[0040] In one possible embodiment, the edge of the connecting rod 310 away from the gimbal body 200 is provided with a first guide surface 312, and the edge of the fixing bracket 100 at the end of the connecting hole 110 facing the gimbal body 200 is provided with a second guide surface 111. The first guide surface 312 and the second guide surface 111 can be rounded or chamfered, which facilitates the quick insertion of the connecting rod 310 into the connecting hole 110 and improves installation efficiency.

[0041] It should be noted that, for the sake of simplicity, the foregoing method embodiments are all described as a series of actions. However, those skilled in the art should understand that this application is not limited to the described order of actions, as some steps may be performed in other orders or simultaneously according to this application. Furthermore, those skilled in the art should also understand that the embodiments described in the specification are preferred embodiments, and the actions and modules involved are not necessarily essential to this application.

[0042] In the above embodiments, the descriptions of each embodiment have different focuses. For parts not described in detail in a certain embodiment, please refer to the relevant descriptions in other embodiments.

[0043] In the several embodiments provided in this application, it should be understood that the disclosed apparatus can be implemented in other ways. For example, the apparatus embodiments described above are merely illustrative; for instance, the division of units is only a logical functional division, and in actual implementation, there may be other division methods. For example, multiple units or components may be combined or integrated into another system, or some features may be ignored or not executed. Furthermore, the coupling or direct coupling or communication connection shown or discussed may be through some interfaces; the indirect coupling or communication connection between devices or units may be electrical or other forms.

[0044] The units described as separate components may or may not be physically separate. The components shown as units may or may not be physical units; that is, they may be located in one place or distributed across multiple network units. Some or all of the units can be selected to achieve the purpose of this embodiment according to actual needs.

[0045] The embodiments of this application have been described in detail above. Specific examples have been used to illustrate the principles and implementation methods of this application. The description of the above embodiments is only for the purpose of helping to understand the method and core ideas of this application. At the same time, for those skilled in the art, there will be changes in the specific implementation methods and application scope based on the ideas of this application. Therefore, the content of this specification should not be construed as a limitation of this application.

Claims

1. A multi-copter drone dual gimbal assembly, comprising: include: A fixed bracket (100) is used to fix it to the drone. The fixed bracket (100) has two sets of symmetrically arranged connecting holes (110). Two gimbal bodies (200), each gimbal body (200) is equipped with a quick-release structure, and each quick-release structure of the gimbal body (200) corresponds to one set of the connecting holes (110); The quick-release structure includes a connecting rod (310), a retaining ring (320), and an elastic element (330). The connecting rod (310) can pass through the connecting hole (110). One end of the connecting rod (310) is fixed to the gimbal body (200), and the other end is provided with a plurality of locking blocks (311) in the circumferential direction. The fixing bracket (100) has a through groove (120) on the inner wall of the connecting hole (110) for the locking blocks (311) to pass through. The retaining ring (320) is slidably sleeved on the connecting rod (310) in the axial direction. The elastic element (330) is installed between the retaining ring (320) and the gimbal body (200).

2. The dual-gimbal assembly of claim 1, wherein: The fixed bracket (100) has a slot (130) for the card block (311) at one end of the connection hole (110) away from the gimbal body (200), and the card block (311) can be snapped into the slot (130).

3. The dual-gimbal assembly of claim 1, wherein: Each group of connecting holes (110) includes a plurality of connecting holes (110) arranged at equal intervals.

4. The dual-gimbal assembly of any of claims 1-3, wherein: The elastic element (330) is a helical spring or a disc spring.

5. The dual-gimbal assembly of claim 4, wherein, A first gasket (321) is installed on the abutment ring (320), and a second gasket (210) is installed on the gimbal body (200). The two ends of the elastic member (330) abut against the first gasket (321) and the second gasket (210) respectively.

6. A dual-gimbal assembly for a multi-copter unmanned aerial vehicle according to any one of claims 1-3, wherein, A plurality of connectors (140) are fixed on the fixed bracket (100). A positioning mounting plate (150) is fixed to one end of the connector (140) away from the fixed bracket (100). The positioning mounting plate (150) is mounted on the drone by bolts.

7. The dual-gimbal assembly of claim 6, wherein the dual-gimbal assembly is configured to be mounted to a multi-copter unmanned aerial vehicle. The positioning mounting plate (150) is provided with a plurality of lugs (151), and the lugs (151) are provided with bolt holes (152) for bolts to pass through.

8. The dual-gimbal assembly of any of claims 1-3, wherein: The edge of the connecting rod (310) away from the gimbal body (200) is provided with a first guide surface (312).

9. The dual-gimbal assembly of claim 8, wherein, The fixed bracket (100) has a second guide surface (111) on the edge of the end of the connecting hole (110) facing the gimbal body (200).

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