A foldable quadcopter drone

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The simultaneous unfolding and folding of the quadcopter drone's arms via a flipping mechanism solves the problems of cumbersome operation and stability, improving efficiency and flight performance.

CN224427875UActive Publication Date: 2026-06-30SHANDONG YEDA INTELLIGENT TECHNOLOGY GROUP CO LTD

Patent Information

Authority / Receiving Office: CN · China
Patent Type: Utility models(China)
Current Assignee / Owner: SHANDONG YEDA INTELLIGENT TECHNOLOGY GROUP CO LTD
Filing Date: 2025-08-18
Publication Date: 2026-06-30

AI Technical Summary

Technical Problem

Existing foldable quadcopter drones are cumbersome to operate when folded or unfolded, which can easily lead to a shift in the center of gravity, affecting flight stability and usage efficiency.

Method used

The system employs a flipping mechanism to drive multiple arms to flip synchronously, and uses automatic locking and positioning to achieve synchronous unfolding or folding of the arms, thereby enhancing structural stability and overall reliability.

Benefits of technology

It improves the efficiency and convenience of drone use, ensures the stability of the drone arms when they are extended or folded, and enhances flight performance and portability.

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Abstract

This utility model discloses a foldable quadcopter drone, relating to the field of drone technology. It includes a drone body, a connecting base, and arms. Multiple connecting blocks are circumferentially equidistantly rotatably connected inside the connecting base. These connecting blocks are located at one end of each of the multiple arms and are fixedly connected to them. The connecting base is equipped with a flipping mechanism for synchronously rotating the multiple connecting blocks. This utility model, through the flipping mechanism, enables the synchronous folding or unfolding of multiple arms via transmission. Simultaneously, automatic locking and positioning effectively ensures the stability of the arms after unfolding or folding. Furthermore, the synchronous locking and fixing of the multiple arms after unfolding or folding further enhances the overall reliability of the structure, thereby improving the efficiency of using the drone body and significantly increasing the convenience of storing and using the drone.

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Description

Technical Field

[0001] This utility model relates to the field of unmanned aerial vehicle (UAV) technology, specifically a foldable quadcopter UAV. Background Technology

[0002] Foldable quadcopter drones are unmanned aerial vehicles that combine quadcopter flight structure with foldable design. They possess the core flight characteristics of traditional quadcopters, such as vertical take-off and landing, hovering, and agile maneuverability. They also achieve a significant reduction in size when folded through foldable mechanical structures of the arms and rotors (such as hinges, buckles, or telescopic designs), making them easy to carry without significantly sacrificing flight performance. Their power and flight control systems are basically the same as those of non-foldable quadcopters, effectively balancing flight flexibility and portability.

[0003] Existing foldable quadcopter drones can be folded to reduce their size for easy storage. However, traditional foldable quadcopter drones require unlocking, rotating, and locking the four rotor arms sequentially when folding or unfolding. This is not only cumbersome and time-consuming, reducing efficiency, but also prone to inconsistencies in the folding or unfolding states of the four rotors due to inconsistent operating force and angle. This can lead to a shift in the drone's center of gravity, resulting in poor flight stability. Therefore, a new foldable quadcopter drone is proposed that eliminates the drawbacks of existing devices. Utility Model Content

[0004] The purpose of this invention is to provide a foldable quadcopter drone to solve the problems in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution:

[0006] A foldable quadcopter drone includes a drone body, a connecting base mounted on the top of the drone body, multiple arms equidistantly arranged on the outer side of the connecting base, and multiple connecting blocks rotatably connected equidistantly on the inner side of the connecting base. The multiple connecting blocks are respectively located at one end of the multiple arms and are respectively fixedly connected to the multiple arms. The connecting base is provided with a flipping mechanism for driving the multiple connecting blocks to flip synchronously.

[0007] The flipping mechanism includes:

[0008] A lifting sleeve is slidably connected inside the connecting seat, the lifting sleeve extending to the outside of the top of the connecting seat, and a lifting slide is fixedly connected to the outer wall of the lifting sleeve, the lifting slide being slidably connected to the connecting seat.

[0009] Based on the above technical solutions, this utility model also provides the following optional technical solutions:

[0010] In one alternative embodiment, the flipping mechanism further includes:

[0011] Transmission components mounted on the lifting carriage;

[0012] The transmission assembly includes:

[0013] Multiple connecting slide plates are circumferentially and equidistantly fixed to the outer wall of the lifting slide. Each of the multiple connecting slide plates is located at one end of a multiple connecting rotating block. Gears are fixedly connected to the outer wall of each of the multiple connecting rotating blocks. A rack is meshed with the outer wall of the gear. The rack is fixedly connected to the connecting slide plate. Both the connecting slide plate and the rack are slidably connected to the connecting seat.

[0014] The connector is provided with a first reset component;

[0015] The lifting sleeve is equipped with a locking component.

[0016] In one alternative embodiment: the first reset component includes:

[0017] A fixed guide rod is fixedly connected inside the connecting seat. The lifting sleeve is slidably sleeved on the outer wall of the fixed guide rod. A second spring is sleeved on the outer wall of the fixed guide rod. One end of the second spring contacts the inner wall of the connecting seat, and the other end of the second spring contacts the outer wall of the lifting sleeve.

[0018] In one alternative embodiment, the engagement assembly includes:

[0019] A movable sleeve plate is slidably sleeved on the outer wall of the lifting sleeve. The movable sleeve plate is slidably connected to the connecting seat. A positioning block is fixedly connected to the inner wall of one end of the movable sleeve plate. The outer wall of one end of the positioning block is inclined. Two positioning slots that match the outer wall of the positioning block are vertically and equidistantly opened on the outer wall of the lifting sleeve.

[0020] The movable sleeve is provided with a limit component;

[0021] The movable sleeve is equipped with a movable component.

[0022] In one alternative embodiment, the limiting component includes:

[0023] Two fixed sleeve blocks are symmetrically fixedly connected to the outer wall of the movable sleeve plate. Two limiting guide rods are symmetrically arranged on the outer side of the movable sleeve plate. Both limiting guide rods are fixedly connected to the connecting seat. The two fixed sleeve blocks are slidably sleeved on the outer wall of the two limiting guide rods respectively.

[0024] The limiting guide rod is equipped with a second reset component.

[0025] In one alternative: the second reset component is a first spring sleeved on the outer wall of the limiting guide rod, one end of the first spring is in contact with the outer wall of the fixing block, and the other end of the first spring is in contact with the inner wall of the connecting seat.

[0026] In one alternative embodiment, the moving component includes:

[0027] A connecting slider is fixedly connected to the top of the movable sleeve plate. The connecting slider extends to the outside of the top of the connecting seat. The connecting slider is slidably connected to the connecting seat. A connecting pull plate is fixedly connected to the top of the connecting slider. The connecting pull plate is located on the outside of the lifting sleeve.

[0028] The connecting pull plate is equipped with a locking component.

[0029] In one alternative: the locking assembly is a knurled bolt disposed at the top of the connecting pull plate, the knurled bolt passing through the connecting pull plate to the interior of the connecting seat, and the knurled bolt being threadedly connected to the connecting pull plate.

[0030] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0031] This invention utilizes a flipping mechanism to achieve synchronous folding or unfolding of multiple arms via transmission. Simultaneously, automatic locking and positioning effectively ensure the stability of the arms after unfolding or folding. Furthermore, after unfolding or folding, the synchronous locking and fixing of multiple arms further enhances the overall reliability of the structure, thereby improving the efficiency of using the drone body and significantly increasing the convenience of storing and using the drone body. Attached Figure Description

[0032] Figure 1 This is a schematic diagram of the structure of this utility model.

[0033] Figure 2 This is a schematic diagram of the internal structure of the connector of this utility model.

[0034] Figure 3 This is a schematic diagram of the internal structure of the lifting sleeve of this utility model.

[0035] Figure 4 For the present utility model Figure 2 A magnified schematic diagram of the structure at point A in the diagram.

[0036] Figure 5 For the present utility model Figure 2 A magnified schematic diagram of the structure at point B in the diagram.

[0037] Figure reference numerals: 1. UAV body; 201. Moving sleeve; 202. Positioning block; 203. Fixed guide rod; 204. Lifting slide; 205. Connecting slide plate; 206. Fixed sleeve; 207. Lifting sleeve; 208. Connecting slider; 209. Knurled bolt; 2010. Connecting pull plate; 2011. Rack; 2012. First spring; 2013. Limiting guide rod; 2014. Second spring; 2015. Gear; 3. Connecting seat; 4. Arm; 5. Connecting rotating block. Detailed Implementation

[0038] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments.

[0039] In one embodiment, such as Figures 1-5 As shown, a foldable quadcopter drone includes a drone body 1, a connecting seat 3 installed at the top of the drone body 1, multiple arms 4 are equidistantly arranged on the outer side of the connecting seat 3, and multiple connecting blocks 5 are rotatably connected to the inner side of the connecting seat 3. The multiple connecting blocks 5 are respectively located at one end of the multiple arms 4 and are fixedly connected to the multiple arms 4. The connecting seat 3 is provided with a flipping mechanism for driving the multiple connecting blocks 5 to flip synchronously.

[0040] The flipping mechanism includes: a lifting sleeve 207 that is slidably connected inside the connecting seat 3, the lifting sleeve 207 extending to the outside of the top of the connecting seat 3, and a lifting slide 204 that is fixedly connected to the outer wall of the lifting sleeve 207, and the lifting slide 204 being slidably connected to the connecting seat 3.

[0041] In this embodiment, during use, the synchronous limiting lock of multiple robotic arms 4 can be released by the flipping mechanism, and multiple robotic arms 4 can be driven to flip synchronously by multiple connecting rotating blocks 5, so as to achieve the purpose of synchronously unfolding multiple robotic arms 4. Then, by locking and engaging, the purpose of synchronously locking and fixing multiple robotic arms 4 can be achieved.

[0042] When the main body 1 of the drone needs to be stored, the above operation is reversed to fold multiple arms 4 simultaneously, thereby further improving the convenience of using the main body 1 of the drone.

[0043] In one embodiment, such as Figures 2-5 As shown, the tilting mechanism also includes a transmission assembly mounted on the lifting slide 204;

[0044] The transmission assembly includes: multiple connecting slide plates 205 that are circumferentially and equidistantly fixedly connected to the outer wall of the lifting slide 204; the multiple connecting slide plates 205 are respectively located at one end of multiple connecting rotating blocks 5; gears 2015 are fixedly connected to the outer wall of each of the multiple connecting rotating blocks 5; racks 2011 are meshed with the outer wall of the gears 2015; racks 2011 are fixedly connected to connecting slide plates 205; and both connecting slide plates 205 and racks 2011 are slidably connected to connecting seats 3.

[0045] A first reset component is provided on the connector 3;

[0046] The lifting sleeve 207 is equipped with a locking assembly;

[0047] The first reset assembly includes: a fixed guide rod 203 fixedly connected inside the connecting seat 3; a lifting sleeve 207 slidably sleeved on the outer wall of the fixed guide rod 203; a second spring 2014 sleeved on the outer wall of the fixed guide rod 203; one end of the second spring 2014 contacts the inner wall of the connecting seat 3; and the other end of the second spring 2014 contacts the outer wall of the lifting sleeve 207. Through the cooperation of the transmission assembly and the first reset assembly, multiple arms 4 can be driven to fold or unfold synchronously, effectively improving the efficiency of the UAV body 1.

[0048] In one embodiment, such as Figures 2-4 As shown, the engaging assembly includes: a movable sleeve plate 201 that is slidably sleeved on the outer wall of the lifting sleeve 207, the movable sleeve plate 201 being slidably connected to the connecting seat 3, a positioning block 202 being fixedly connected to the inner wall of one end of the movable sleeve plate 201, the outer wall of one end of the positioning block 202 being inclined, and two positioning slots that match the outer wall of the positioning block 202 being vertically and equidistantly opened on the outer wall of the lifting sleeve 207;

[0049] A limit component is provided on the movable sleeve 201;

[0050] The movable sleeve 201 is equipped with a movable component;

[0051] The limiting component includes: two fixed sleeve blocks 206 symmetrically fixedly connected to the outer wall of the movable sleeve plate 201; two limiting guide rods 2013 symmetrically arranged on the outer side of the movable sleeve plate 201; both limiting guide rods 2013 are fixedly connected to the connecting seat 3; and the two fixed sleeve blocks 206 are respectively slidably sleeved on the outer wall of the two limiting guide rods 2013.

[0052] A second reset component is provided on the limit guide rod 2013;

[0053] The second reset component is a first spring 2012 sleeved on the outer wall of the limiting guide rod 2013. One end of the first spring 2012 is in contact with the outer wall of the fixed sleeve block 206, and the other end of the first spring 2012 is in contact with the inner wall of the connecting seat 3. Through the cooperation of the locking component, the limiting component and the second reset component, the lifting sleeve 207 can be automatically locked and positioned.

[0054] In one embodiment, such as Figures 1-4 As shown, the moving component includes: a connecting slider 208 fixedly connected to the top of the moving sleeve 201, the connecting slider 208 extending to the outside of the top of the connecting seat 3, the connecting slider 208 being slidably connected to the connecting seat 3, and a connecting pull plate 2010 fixedly connected to the top of the connecting slider 208, the connecting pull plate 2010 being located on the outside of the lifting sleeve 207.

[0055] A locking component is provided on the connecting pull plate 2010;

[0056] The locking component is a knurled bolt 209 located at the top of the connecting pull plate 2010. The knurled bolt 209 passes through the connecting pull plate 2010 to the interior of the connecting seat 3. The knurled bolt 209 is threadedly connected to the connecting pull plate 2010. Through the cooperation of the moving component and the locking component, the purpose of locking multiple arms 4 simultaneously can be achieved.

[0057] The above embodiment discloses a foldable quadcopter drone. In use, the knurled bolt 209 is rotated to separate from the inner wall of the connecting seat 3, thereby releasing the limiting lock on the connecting pull plate 2010. Then, the lifting sleeve 207 is pressed down along the outer wall of the fixed guide rod 203. At this time, the lifting sleeve 207 retracts by compressing the second spring 2014. At the same time, the connecting slide plate 205 drives the rack 2011 to descend synchronously through the lifting slide 204 driven by the lifting sleeve 207. At this time, the gear 2015, driven by the meshing of the rack 2011, drives the arm 4 to rotate through the connecting rotating block 5. This can drive multiple arms 4 to rotate synchronously, so as to achieve the purpose of synchronously unfolding multiple arms 4.

[0058] During this process, the lifting sleeve 207 presses against the outer wall of the positioning block 202 through a positioning slot. At this time, the positioning block 202, under the pressure of the inner wall of the positioning slot, drives the two fixed sleeve blocks 206 to slide along the outer wall of the limiting guide rod 2013 through the moving sleeve plate 201. At the same time, the fixed sleeve blocks 206 retract by moving the compression first spring 2012. Meanwhile, the connecting pull plate 2010 drives the knurled bolt 209 to move synchronously through the connecting slider 208 driven by the moving sleeve plate 201.

[0059] When the other positioning slot moves to one end of the positioning block 202 under the action of the lifting sleeve 207, the first spring 2012 pushes the fixed sleeve 206 to reset by rebound. At the same time, the positioning block 202 is inserted into the other positioning slot by the moving sleeve 201 under the action of the fixed sleeve 206. This allows the lifting sleeve 207 to be easily engaged and positioned. Then, the knurled bolt 209 is rotated and inserted into the connecting seat 3 to achieve the purpose of easily locking and fixing the connecting pull plate 2010.

[0060] When the main body of the drone 1 needs to be stored, the above operation is reversed to fold multiple arms 4 simultaneously, thereby further improving the convenience of using the main body of the drone 1.

[0061] The above description is merely a specific embodiment of this application, but the scope of protection of this application is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in this application should be included within the scope of protection of this application. Therefore, the scope of protection of this application should be determined by the scope of the claims.

Claims

1. A foldable quadrotor unmanned aerial vehicle, comprising an unmanned aerial vehicle body (1), a connecting seat (3) is installed at the top end of the unmanned aerial vehicle body (1), a plurality of arms (4) are circumferentially and equidistantly arranged on the outer side of the connecting seat (3), a plurality of connecting rotating blocks (5) are circumferentially and equidistantly rotatably connected inside the connecting seat (3), the plurality of connecting rotating blocks (5) are respectively located at one end of the plurality of arms (4), and the plurality of connecting rotating blocks (5) are fixedly connected with the plurality of arms (4), characterized in that, The connecting seat (3) is provided with a flipping mechanism for driving multiple connecting rotating blocks (5) to flip synchronously; The flipping mechanism includes: A lifting sleeve (207) is slidably connected inside the connecting seat (3). The lifting sleeve (207) extends to the outside of the top of the connecting seat (3). A lifting slide (204) is fixedly connected to the outer wall of the lifting sleeve (207). The lifting slide (204) is slidably connected to the connecting seat (3).

2. A foldable quadcopter drone according to claim 1, characterized in that, The flipping mechanism also includes a transmission assembly disposed on the lifting slide (204); The transmission assembly includes: multiple connecting slide plates (205) that are circumferentially and equidistantly fixed to the outer wall of the lifting slide (204); the multiple connecting slide plates (205) are respectively located at one end of multiple connecting rotating blocks (5); gears (2015) are fixedly connected to the outer wall of each of the multiple connecting rotating blocks (5); racks (2011) are meshed with the outer wall of the gears (2015); racks (2011) are fixedly connected to connecting slide plates (205); and both connecting slide plates (205) and racks (2011) are slidably connected to connecting seats (3). The connector (3) is provided with a first reset component; The lifting sleeve (207) is equipped with a locking assembly.

3. A foldable quadcopter drone according to claim 2, characterized in that, The first reset assembly includes: a fixed guide rod (203) fixedly connected inside the connecting seat (3), the lifting sleeve (207) slidably sleeved on the outer wall of the fixed guide rod (203), and a second spring (2014) sleeved on the outer wall of the fixed guide rod (203). One end of the second spring (2014) is in contact with the inner wall of the connecting seat (3), and the other end of the second spring (2014) is in contact with the outer wall of the lifting sleeve (207).

4. A foldable quadcopter drone according to claim 2, characterized in that, The engaging assembly includes: a movable sleeve plate (201) that is slidably sleeved on the outer wall of the lifting sleeve (207), the movable sleeve plate (201) being slidably connected to the connecting seat (3), a positioning block (202) being fixedly connected to the inner wall of one end of the movable sleeve plate (201), the outer wall of one end of the positioning block (202) being inclined, and two positioning slots that are vertically and equidistantly provided on the outer wall of the lifting sleeve (207) and match the outer wall of the positioning block (202); The movable sleeve (201) is provided with a limit component; The movable sleeve (201) is provided with a movable component.

5. A foldable quadcopter drone according to claim 4, characterized in that, The limiting component includes: two fixed sleeve blocks (206) symmetrically fixedly connected to the outer wall of the movable sleeve plate (201); two limiting guide rods (2013) are symmetrically arranged on the outer side of the movable sleeve plate (201); both limiting guide rods (2013) are fixedly connected to the connecting seat (3); and the two fixed sleeve blocks (206) are respectively slidably sleeved on the outer wall of the two limiting guide rods (2013). The limiting guide rod (2013) is provided with a second reset component.

6. A foldable quadcopter drone according to claim 5, characterized in that, The second reset component is a first spring (2012) sleeved on the outer wall of the limiting guide rod (2013). One end of the first spring (2012) is in contact with the outer wall of the fixing block (206), and the other end of the first spring (2012) is in contact with the inner wall of the connecting seat (3).

7. A foldable quadcopter drone according to claim 4, characterized in that, The moving component includes: a connecting slider (208) fixedly connected to the top of the moving sleeve (201), the connecting slider (208) extending through to the outside of the top of the connecting seat (3), the connecting slider (208) being slidably connected to the connecting seat (3), and a connecting pull plate (2010) fixedly connected to the top of the connecting slider (208), the connecting pull plate (2010) being located on the outside of the lifting sleeve (207); The connecting pull plate (2010) is equipped with a locking component.

8. A foldable quadcopter drone according to claim 7, characterized in that, The locking component is a knurled bolt (209) set at the top of the connecting pull plate (2010). The knurled bolt (209) passes through the connecting pull plate (2010) to the interior of the connecting seat (3). The knurled bolt (209) is threadedly connected to the connecting pull plate (2010).