A portable four-rotor drone with foldable connecting rod and protective mechanism

Abstract

A portable four-rotor drone with a connecting rod and a protective mechanism relates to the field of drone technology. This invention aims to solve the problems that existing drones with foldable rotors have no protection for their propellers on the one hand; and on the other hand, when a protective structure is added to the propellers, if the external force is transferred to the folding rotors due to collision with obstacles, the folding rotors are in a soft limit mode and will malfunction when the force due to collision exceeds a certain level, which may cause the rotors to fall in severe cases. The drone with this structure has high folding efficiency; on the other hand, the four rotors are designed to be divided into two layers, and a stacking action can achieve that the four rotors are at the same height; and in combination with the outer surface of the guide limiter, a magnetic ring is provided to connect the four protective covers to form a closed force loop, thereby providing better protection for the wing blades. In addition, this design can further improve the bearing capacity of the protective covers and avoid malfunctions or falls. The present invention is applicable to the field of drone technology.

Description

Technical Field

[0001] The present invention relates to the technical field of unmanned aerial vehicles (UAVs), and in particular to a portable four-rotor UAV with a foldable connecting rod and a protective mechanism. Background Art

[0002] Traditional quadcopters are large and difficult to carry, largely due to their fixed rotors and landing gear. Portable folding drones, however, are not only more compact and portable than fixed-wing quadcopters, allowing them to be carried around in a backpack. Their folded rotors are also less susceptible to damage during transport, making them highly sought after by drone enthusiasts. Currently, the following methods for achieving foldable drones are being summarized: rotational folding, slide-type arm telescopic folding, and multi-dimensional folding. In addition to the folding structure, the locking mechanism must also be considered. These are categorized as either soft or hard. Hard locking uses latches or other fixed mechanisms, while soft locking uses springs or other flexible mechanisms. A challenge with hard locking is that external forces place high demands on the locking mechanism and component structure, making it susceptible to stress concentration at the locking point, potentially causing structural damage. However, soft locking mechanisms can lose their locking function under certain external forces. Currently, portable foldable quadcopters on the market generally use spring-type hinges for locking. Therefore, there is a problem. When considering the collision of a quadcopter with an obstacle due to misoperation or perspective problems during flight, on the one hand, the rotating propeller of the quadcopter may touch the obstacle during flight and the motor may be blocked, causing one rotor of the quadcopter to not work, resulting in a fault and a change in the overall force, affecting the subsequent flight of the drone, and may cause it to fall or other damage to the drone.

[0003] To sum up, existing folding rotor drones do not have any protection for their propellers. On the other hand, when a protective structure is added to the propellers, if the propellers are hit by obstacles, the external force will be transferred to the folding rotors. The folding rotors are soft-limited and will malfunction when the force of the collision exceeds a certain level. In serious cases, it may cause the rotor to fall. Summary of the Invention

[0004] The present invention aims to solve the problems that existing folding rotor drones have no protection for their propellers on the one hand; on the other hand, when a protective structure is added to the propellers, if the external force is transferred to the folding rotors due to collision with obstacles, the folding rotors are in a soft limit mode and will malfunction when the collision force exceeds a certain level, which may cause a fall in severe cases. Therefore, a connecting rod folding portable quad-rotor drone with a protective mechanism is proposed.

[0005] The present invention provides a portable folding quad-rotor drone with a protective mechanism, and its specific structure includes a folding tripod 1, a lower shell 2, a folding wing unit 3, a top cover 4, a flip cover 5, a storage box 6, a connecting rod 7 and a locking unit 8;

[0006] Two pairs of folding wing units 3 and lower shell 2 are arranged in sequence just below the bottom surface of the top cover 4. The two pairs of folding wing units 3 are arranged in two layers. The top end of the rotating shaft 3-1 of each folding wing unit 3 is rotatably connected to the bottom surface of the top cover 4, and the bottom end of the rotating shaft 3-1 of each folding wing unit 3 is inserted into the interior of the lower shell 2. The lower surface of the lower shell 2 is evenly processed with four strip-shaped through holes along the circumferential direction. A folding tripod 1 is provided inside each strip-shaped through hole, and the end of the folding tripod 1 is hinged to one end of the strip-shaped through hole. The rotating shaft 3-1 of the folding wing unit 3 is arranged corresponding to the position of the folding tripod 1. The bottom of the rotating shaft 3-1 is connected to one end of the connecting rod 7 through a ball joint mechanism. The other end of the connecting rod 7 is hinged to the middle of the upper surface of the corresponding folding tripod 1. Two locking units 8 are symmetrically provided on the inner bottom surface of the lower shell 2. A storage box 6 is provided in the middle of the lower surface of the top cover 4, and a square through hole is machined in the middle of the upper surface of the top cover 4. A flip cover 5 is provided inside the square through hole, and the long edge of the flip cover 5 is hinged to the long edge of the square through hole.

[0007] Furthermore, the folding wing unit 3 includes a rotating shaft 3-1, a gear 3-2, a guide limiter 3-3, a protective cover 3-4, a first drive link 3-5, a pin 3-6, a second drive link 3-7, a motor base 3-8, a drive motor 3-9, a wing blade 3-10, a half gear 3-11 and a third drive link 3-12;

[0008] The two rotating shafts 3-1 are arranged in parallel with each other, and a gear 3-2 is provided on each rotating shaft 3-1. A No. 1 driving link 3-5 is provided on the end surface of the gear 3-2. The end of the No. 1 driving link 3-5 is hinged to one end of the No. 2 driving link 3-7 through a pin shaft 3-6, and the two No. 2 driving links 3-7 are arranged crosswise. A driving motor 3-9 is provided on the upper surface end of one No. 2 driving link 3-7. The driving motor 3-9 is fixedly connected to the upper surface of the No. 2 driving link 3-7 through a motor seat 3-8. A wing blade 3-10 is provided on the output shaft of the driving motor 3-9. Each No. 2 driving link 3-7 The other end is hinged to one end of the No. 3 driving link 3-12, and the two No. 3 driving links 3-12 are arranged crosswise, one of the No. 3 driving links 3-12 is hinged to one end of the inner side surface of the protective cover 3-4, and the other No. 3 driving link 3-12 is hinged to the other end of the inner side surface of the protective cover 3-4, and a half gear 3-11 is respectively provided at the two hinge connection points, and the two half gears 3-11 are meshed and connected, and a guide limiter 3-3 is respectively provided at both ends of the protective cover 3-4, and the guide limiter 3-3 is hinged to the end of the protective cover 3-4, and a magnetic ring is provided on the outer surface of the guide limiter 3-3;

[0009] Furthermore, the gears 3-2 on the two rotating shafts 3-1 are meshed and connected;

[0010] Furthermore, the gear 3-2 in one pair of folding wing units 3 is sleeved on the rotating shaft 3-1, and the gear 3-2 is slidably connected to the rotating shaft 3-1; the gear 3-2 in the other pair of folding wing units 3 is sleeved and fixed on the rotating shaft 3-1;

[0011] Furthermore, the fixed positions of the two locking units 8 inside the lower shell 2 are arranged corresponding to the other pair of folding wing units 3;

[0012] Furthermore, the top end of the rotating shaft 3-1 of the folding wing unit 3 passes through the top cover 4 and is fixedly connected to the retaining spring 9;

[0013] Furthermore, a pair of blind holes are machined along the outer circumferential surface of the bottom of the rotating shaft 3-1 in each folding wing unit 3;

[0014] Furthermore, the locking unit 8 includes a No. 1 guide bracket 8-1, a pin 8-2, a slider 8-3, a spring 8-4, a No. 2 guide bracket 8-5 and a guide shaft 8-6;

[0015] The first guide bracket 8-1 and the second guide bracket 8-5 are symmetrically arranged, and a slider 8-3 is provided between the first guide bracket 8-1 and the second guide bracket 8-5. A guide shaft 8-6 is provided in the middle of one side of the slider 8-3. The end of the guide shaft 8-6 passes through the spring 8-4 and is inserted into the guide hole on the second guide bracket 8-5. Two pins 8-2 are provided in the middle of the other side of the slider 8-3 from top to bottom. The top of the pin 8-2 passes through the guide hole on the first guide bracket 8-1 and is inserted into the blind hole at the bottom end of the rotating shaft 3-1.

[0016] Furthermore, a rectangular through hole is formed on the inner bottom surface of the lower housing 2, and the bottom of the slider 8-3 in the locking unit 8 is inserted into the inner portion of the rectangular through hole;

[0017] Furthermore, the lower shell 2 is slidably connected to the rotating shaft 3-1 in the folding wing unit 3;

[0018] Furthermore, when in use, the present application adopts a four-layer structure of a four-rotor drone, in which the top cover 4 is the first layer; a pair of folding wing units 3 is the second layer; another pair of folding wing units 3 is the third layer; and the lower shell 2 is the fourth layer; the two rotating shafts 3-1 in the folding wing unit 3 are arranged relatively parallel, and each rotating shaft 3-1 is provided with a gear 3-2, and a No. 1 drive link 3-5 is provided on the end face of the gear 3-2, and the end of the No. 1 drive link 3-5 is hinged to one end of the No. 2 drive link 3-7 through a pin shaft 3-6, and the two No. 2 drive links 3-7 are cross-arranged, and a drive motor 3-9 is provided at the upper surface end of one of the No. 2 drive links 3-7, and the drive motor 3-9 is fixed to the upper surface of the No. 2 drive link 3-7 through a motor seat 3-8. The wing blade 3-10 is connected to the output shaft of the driving motor 3-9, and the other end of each No. 2 driving link 3-7 is hinged to one end of the No. 3 driving link 3-12, and the two No. 3 driving links 3-12 are arranged crosswise, one of the No. 3 driving links 3-12 is hinged to one end of the inner side of the protective cover 3-4, and the other No. 3 driving link 3-12 is hinged to the other end of the inner side of the protective cover 3-4, and a half gear 3-11 is respectively provided at the two hinge points, and the two half gears 3-11 are meshed and connected; and the gears 3-2 on the two rotating shafts 3-1 are meshed and connected. The folding wing unit 3 with this structure can be manually pulled to realize the folding and retraction of the wing by utilizing the internal cross hinge structure;

[0019] First, the four folding wing units 3 are manually unfolded; then, the lower shell 2 is supported and lifted upward, and the gear 3-2 in the pair of folding wing units 3 on the third layer is sleeved on the rotating shaft 3-1, and the gear 3-2 is slidably connected to the rotating shaft 3-1, so that the pair of folding wing units 3 on the third layer moves upward, so that the upper surfaces of the four folding wing units 3 are in the same plane; in the process of lifting the lower shell 2 upward, the bottom of the rotating shaft 3-1 is connected to one end of the connecting rod 7 through a ball joint mechanism, and the other end of the connecting rod 7 is hinged to the middle part of the upper surface of the corresponding folding tripod 1, so that the four folding tripods 1 can be unfolded downward; finally, the slider 8-3 in the locking unit 8 is moved horizontally, and the pin 8-2 is inserted into the blind hole on the rotating shaft 3-1 in the pair of folding wing units 3 on the third layer, thereby playing the role of locking the machine; the deployment of the connecting rod folding portable quadrotor drone is completed.

[0020] Compared with the prior art, the present invention has the following beneficial effects:

[0021] The present invention provides a folding wing unit, wherein two rotating shafts are arranged in parallel with each other, and each rotating shaft is provided with a gear, and a No. 1 driving link is provided on the end surface of the gear, and the end of the No. 1 driving link is hinged to one end of the No. 2 driving link through a pin shaft, and the two No. 2 driving links are arranged crosswise, and the upper surface end of one of the No. 2 driving links is provided with a driving motor, and the driving motor is fixedly connected to the upper surface of the No. 2 driving link through a motor seat, and a wing blade is provided on the output shaft of the driving motor, and the other end of each No. 2 driving link is hinged to one end of the No. 3 driving link, and the two No. 3 driving links are arranged crosswise, and one of the No. 3 driving links is hinged to one end of the inner side surface of the protective cover, and the other No. 3 driving link is hinged to the other end of the inner side surface of the protective cover, and a semi-circular is provided at the two hinge connection points. Gear, the two half gears are meshed and connected; and the gears on the two rotating shafts are meshed and connected. The advantage of this design is that the folding efficiency is high, and the movement during folding or contraction is determined to be in a straight line, and it is easy to execute; on the other hand, in order to improve space utilization and reduce occupied space, the four rotors are designed into two layers, and when in use, a stacking action can be performed to achieve the four rotors at the same height; and combined with the outer surface of the guide limiter is provided with a magnetic ring, the four protective covers are connected to each other to form a force closed loop, thereby providing better protection for the wing blades, and this design can further enhance the bearing capacity of the protective cover. The four protective covers are connected together to further make the structure of the four rotors more stable during flight, avoiding failure or falling when the force received by the collision exceeds a certain level. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a three-dimensional half-section schematic diagram of a portable four-rotor drone with a foldable connecting rod and a protective mechanism in an unfolded state according to the present invention;

[0023] Figure 2 This is a three-dimensional half-section schematic diagram of a connecting rod folding portable quad-rotor drone with a protective mechanism in its initial state according to the present invention;

[0024] Figure 3 It is a three-dimensional schematic diagram of a folding wing unit in a portable four-rotor drone with a folding connecting rod and a protective mechanism according to the present invention;

[0025] Figure 4 This is a three-dimensional schematic diagram of a folding wing unit in a retracted state in a connecting rod folding portable quad-rotor drone with a protective mechanism according to the present invention;

[0026] Figure 5 It is a three-dimensional half-section schematic diagram of the lower shell of a connecting rod folding portable quad-rotor drone with a protective mechanism according to the present invention;

[0027] Figure 6 This is a three-dimensional schematic diagram of the matching relationship between the top cover and the top of the rotating shaft in a portable four-rotor drone with a foldable connecting rod and a protective mechanism described in the present invention. ；

[0028] Figure 7 This is a schematic diagram of the three-dimensional structure of a connecting rod folding portable quad-rotor drone with a protective mechanism according to the present invention, with four folding wing units in an unfolded state;

[0029] Figure 8 The present invention is a schematic diagram of the three-dimensional structure of a portable four-rotor drone with a foldable connecting rod and a protective mechanism in an unfolded state. DETAILED DESCRIPTION

[0030] Specific implementation method 1: Combination Figure 1 、 Figure 2 、 Figure 7 and Figure 8 This embodiment describes a connecting rod folding portable quadcopter drone with a protective mechanism, and its specific structure includes a folding tripod 1, a lower shell 2, a folding wing unit 3, a top cover 4, a flip cover 5, a storage box 6, a connecting rod 7 and a locking unit 8;

[0031] Two pairs of folding wing units 3 and lower shell 2 are arranged in sequence just below the bottom surface of the top cover 4. The two pairs of folding wing units 3 are arranged in two layers. The top end of the rotating shaft 3-1 of each folding wing unit 3 is rotatably connected to the bottom surface of the top cover 4, and the bottom end of the rotating shaft 3-1 of each folding wing unit 3 is inserted into the interior of the lower shell 2. The lower surface of the lower shell 2 is evenly processed with four strip-shaped through holes along the circumferential direction. A folding tripod 1 is provided inside each strip-shaped through hole, and the end of the folding tripod 1 is hinged to one end of the strip-shaped through hole. The rotating shaft 3-1 of the folding wing unit 3 is arranged corresponding to the position of the folding tripod 1. The bottom of the rotating shaft 3-1 is connected to one end of the connecting rod 7 through a ball joint mechanism. The other end of the connecting rod 7 is hinged to the middle of the upper surface of the corresponding folding tripod 1. Two locking units 8 are symmetrically provided on the inner bottom surface of the lower shell 2. A storage box 6 is provided in the middle of the lower surface of the top cover 4, and a square through hole is machined in the middle of the upper surface of the top cover 4. A flip cover 5 is provided inside the square through hole, and the long edge of the flip cover 5 is hinged to the long edge of the square through hole.

[0032] In this specific embodiment, when in use, the present application adopts a four-layer structure of a four-rotor drone, in which the top cover 4 is the first layer; a pair of folding wing units 3 is the second layer; another pair of folding wing units 3 is the third layer; and the lower shell 2 is the fourth layer; the two rotating shafts 3-1 in the folding wing unit 3 are arranged relatively parallel, and each rotating shaft 3-1 is provided with a gear 3-2, and a No. 1 drive link 3-5 is provided on the end face of the gear 3-2, and the end of the No. 1 drive link 3-5 is hinged to one end of the No. 2 drive link 3-7 through a pin shaft 3-6, and the two No. 2 drive links 3-7 are cross-arranged, and a drive motor 3-9 is provided at the upper surface end of one of the No. 2 drive links 3-7, and the drive motor 3-9 is connected to the upper surface of the No. 2 drive link 3-7 through a motor seat 3-8. The wing blade 3-10 is fixedly connected, and the other end of each No. 2 driving link 3-7 is hinged to one end of the No. 3 driving link 3-12, and the two No. 3 driving links 3-12 are cross-arranged, one of the No. 3 driving links 3-12 is hinged to one end of the inner side of the protective cover 3-4, and the other No. 3 driving link 3-12 is hinged to the other end of the inner side of the protective cover 3-4, and a half gear 3-11 is respectively provided at the two hinge points, and the two half gears 3-11 are meshed and connected; and the gears 3-2 on the two rotating shafts 3-1 are meshed and connected. The folding wing unit 3 with this structure can be manually pulled to realize the folding and retraction of the wing by utilizing the internal cross hinge structure;

[0033] First, the four folding wing units 3 are manually unfolded; then, the lower shell 2 is lifted upward by holding it, and the gears 3-2 in the pair of folding wing units 3 on the third layer are sleeved on the shaft 3-1, and the gears 3-2 are slidably connected to the shaft 3-1, so that the pair of folding wing units 3 on the third layer move upward, thereby making the upper surfaces of the four folding wing units 3 in the same plane; in the process of lifting the lower shell 2 upward, the bottom of the shaft 3-1 is connected to one end of the connecting rod 7 through the ball joint mechanism, and the other end of the connecting rod 7 is hinged to the middle part of the upper surface of the corresponding folding tripod 1, so that the four folding tripods 1 can be moved upward. Finally, the slider 8-3 in the locking unit 8 is moved horizontally to insert the pin 8-2 into the blind hole on the rotating shaft 3-1 in the third-layer pair of folding wing units 3, thereby playing the role of locking the machine and fixing it. When it reaches a certain height, under the action of the spring, the positioning pin will move linearly to the blind hole at the bottom of the rotating shaft 3-1, thereby achieving the effect of fixing the overall structure. At this time, the deployment of the connecting rod folding portable quadcopter is completed. On the one hand, it facilitates the operations required for the use of the drone, and on the other hand, it further improves the space utilization, reduces the occupied space, and is convenient for carrying outside.

[0034] Specific implementation method 2: Combination Figure 3 and Figure 4 This embodiment is described. This embodiment further limits the drone described in the first embodiment. This embodiment describes a connecting rod folding portable quadrotor drone with a protective mechanism. The folding wing unit 3 includes a rotating shaft 3-1, a gear 3-2, a guide limiter 3-3, a protective cover 3-4, a first drive link 3-5, a pin 3-6, a second drive link 3-7, a motor base 3-8, a drive motor 3-9, a wing blade 3-10, a half gear 3-11, and a third drive link 3-12.

[0035] The two rotating shafts 3-1 are arranged in parallel with each other, and a gear 3-2 is provided on each rotating shaft 3-1. A No. 1 driving link 3-5 is provided on the end surface of the gear 3-2. The end of the No. 1 driving link 3-5 is hinged to one end of the No. 2 driving link 3-7 through a pin shaft 3-6, and the two No. 2 driving links 3-7 are arranged crosswise. A driving motor 3-9 is provided on the upper surface end of one No. 2 driving link 3-7. The driving motor 3-9 is fixedly connected to the upper surface of the No. 2 driving link 3-7 through a motor seat 3-8. A wing blade 3-10 is provided on the output shaft of the driving motor 3-9. Each No. 2 driving link 3-7 The other end is hinged to one end of the No. 3 drive link 3-12, and the two No. 3 drive links 3-12 are cross-arranged, one of the No. 3 drive links 3-12 is hinged to one end of the inner side surface of the protective cover 3-4, and the other No. 3 drive link 3-12 is hinged to the other end of the inner side surface of the protective cover 3-4, and a half gear 3-11 is respectively provided at the two hinge points, and the two half gears 3-11 are meshed and connected, and a guide limit member 3-3 is respectively provided at both ends of the protective cover 3-4, and the guide limit member 3-3 is hinged to the end of the protective cover 3-4, and a magnetic ring is provided on the outer surface of the guide limit member 3-3.

[0036] Specific implementation method three: Combination Figure 3 and Figure 4 This embodiment further defines the drone described in the second embodiment. This embodiment further defines a foldable, portable quad-rotor drone with a protective mechanism. The gears 3-2 on the two rotating shafts 3-1 are meshed and connected.

[0037] In this specific embodiment, the two rotating shafts 3-1 in the folding wing unit 3 are arranged in parallel with each other, and a gear 3-2 is provided on each rotating shaft 3-1, and a No. 1 driving link 3-5 is provided on the end surface of the gear 3-2. The end of the No. 1 driving link 3-5 is hinged to one end of the No. 2 driving link 3-7 through a pin shaft 3-6, and the two No. 2 driving links 3-7 are arranged crosswise, and a driving motor 3-9 is provided on the upper surface end of one No. 2 driving link 3-7. The driving motor 3-9 is fixedly connected to the upper surface of the No. 2 driving link 3-7 through a motor seat 3-8, and a wing blade 3-10 is provided on the output shaft of the driving motor 3-9. The other end of the rod 3-7 is hinged to one end of the No. 3 drive link 3-12, and the two No. 3 drive links 3-12 are cross-arranged, one of the No. 3 drive links 3-12 is hinged to one end of the inner side of the protective cover 3-4, and the other No. 3 drive link 3-12 is hinged to the other end of the inner side of the protective cover 3-4, and a half gear 3-11 is respectively provided at the two hinge points, and the two half gears 3-11 are meshed and connected; and the gears 3-2 on the two rotating shafts 3-1 are meshed and connected. The folding wing unit 3 adopts this structure, and the folding wing unit 3 can be manually pulled, and the internal cross hinge structure is used to realize the folding and extension of the wing.

[0038] Specific implementation method four: Combination Figure 3 and Figure 4 This embodiment is described as a further limitation of the drone described in the second embodiment. In this embodiment, a portable folding quadrotor drone with a protective mechanism is provided. The gear 3-2 in one pair of folding wing units 3 is sleeved on the rotating shaft 3-1, and the gear 3-2 is slidably connected to the rotating shaft 3-1; the gear 3-2 in the other pair of folding wing units 3 is sleeved and fixed on the rotating shaft 3-1.

[0039] This specific embodiment adopts such a structure, which is conducive to folding and storage on the one hand, and on the other hand can make a pair of folding wing units 3 of the third layer move upward by supporting and lifting the lower shell 2, so that the upper surfaces of the four folding wing units 3 are in the same plane.

[0040] Specific implementation method five: Combination Figure 3 and Figure 4 This embodiment is described as a further limitation of the drone described in the first embodiment. In this embodiment, a portable four-rotor drone with a connecting rod and a protective mechanism is described, and the fixed positions of the two locking units 8 inside the lower shell 2 are set corresponding to the other pair of folding wing units 3.

[0041] Specific implementation method six: combination Figure 6This embodiment is described as a further limitation of the drone described in the first embodiment. This embodiment describes a connecting rod folding portable quad-rotor drone with a protective mechanism. The top end of the rotating shaft 3-1 in the folding wing unit 3 passes through the top cover 4 and is fixedly connected to the retaining spring 9.

[0042] Specific implementation method seven: combination Figure 3 and Figure 4 This embodiment is described as a further limitation of the drone described in the second embodiment. In this embodiment, a portable four-rotor drone with a foldable connecting rod and a protective mechanism is provided. A pair of blind holes are machined along the outer circumferential surface at the bottom of the rotating shaft 3-1 in each folding wing unit 3.

[0043] Specific implementation method eight: combination Figures 1 to 5 This embodiment is described as a further limitation of the drone described in Specific Embodiment 7. In this embodiment, a connecting rod foldable portable quad-rotor drone with a protection mechanism is described. The locking unit 8 includes a first guide bracket 8-1, a pin 8-2, a slider 8-3, a spring 8-4, a second guide bracket 8-5, and a guide shaft 8-6.

[0044] The No. 1 guide bracket 8-1 and the No. 2 guide bracket 8-5 are symmetrically arranged, and a slider 8-3 is provided between the No. 1 guide bracket 8-1 and the No. 2 guide bracket 8-5. A guide shaft 8-6 is provided in the middle of one side of the slider 8-3. The end of the guide shaft 8-6 passes through the spring 8-4 and is inserted into the guide hole on the No. 2 guide bracket 8-5. Two pins 8-2 are provided in the middle of the other side of the slider 8-3 from top to bottom. The top end of the pin 8-2 passes through the guide hole on the No. 1 guide bracket 8-1 and is inserted into the blind hole at the bottom end of the rotating shaft 3-1.

[0045] Specific implementation method nine: Combination Figures 1 to 5 This embodiment further defines the drone described in Specific Embodiment 8. This embodiment further defines a portable, foldable quad-rotor drone with a protective mechanism. A rectangular through-hole is formed on the bottom surface of the lower housing 2, and the bottom of the slider 8-3 in the locking unit 8 is inserted into the rectangular through-hole.

[0046] In this specific embodiment, a rectangular through hole is processed on the inner bottom surface of the lower shell 2, and the bottom of the slider 8-3 in the locking unit 8 is inserted into the interior of the rectangular through hole, and the rectangular through hole on the lower shell 2 is used to effectively limit the sliding stroke of the slider 8-3.

[0047] Specific implementation method ten: Combination Figures 1 to 5This embodiment is described as a further limitation of the drone described in the second embodiment. This embodiment describes a connecting rod folding portable quad-rotor drone with a protective mechanism, in which the lower shell 2 is slidably connected to the rotating shaft 3-1 in the folding wing unit 3.

[0048] How it works

[0049] When in use, the present application adopts a four-layer structure of a four-rotor drone, in which the top cover 4 is the first layer; a pair of folding wing units 3 is the second layer; another pair of folding wing units 3 is the third layer; and the lower shell 2 is the fourth layer; the two rotating shafts 3-1 in the folding wing unit 3 are arranged relatively parallel, and each rotating shaft 3-1 is provided with a gear 3-2, and a No. 1 drive link 3-5 is provided on the end face of the gear 3-2, and the end of the No. 1 drive link 3-5 is hinged to one end of the No. 2 drive link 3-7 through a pin shaft 3-6, and the two No. 2 drive links 3-7 are cross-arranged, and a drive motor 3-9 is provided at the upper surface end of one of the No. 2 drive links 3-7, and the drive motor 3-9 is fixedly connected to the upper surface of the No. 2 drive link 3-7 through a motor seat 3-8. , a wing blade 3-10 is provided on the output shaft of the driving motor 3-9, the other end of each No. 2 driving link 3-7 is hinged to one end of the No. 3 driving link 3-12, and the two No. 3 driving links 3-12 are arranged crosswise, one No. 3 driving link 3-12 is hinged to one end of the inner side of the protective cover 3-4, and the other No. 3 driving link 3-12 is hinged to the other end of the inner side of the protective cover 3-4, and a half gear 3-11 is respectively provided at the two hinge connection points, and the two half gears 3-11 are meshed and connected; and the gears 3-2 on the two rotating shafts 3-1 are meshed and connected. The folding wing unit 3 with this structure can be manually pulled to realize the folding and retraction of the wing by utilizing the internal cross hinge structure;

[0050] First, the four folding wing units 3 are manually unfolded; then, the lower shell 2 is supported and lifted upward, and the gear 3-2 in the pair of folding wing units 3 on the third layer is sleeved on the rotating shaft 3-1, and the gear 3-2 is slidably connected to the rotating shaft 3-1, so that the pair of folding wing units 3 on the third layer moves upward, so that the upper surfaces of the four folding wing units 3 are in the same plane; in the process of lifting the lower shell 2 upward, the bottom of the rotating shaft 3-1 is connected to one end of the connecting rod 7 through a ball joint mechanism, and the other end of the connecting rod 7 is hinged to the middle part of the upper surface of the corresponding folding tripod 1, so that the four folding tripods 1 can be unfolded downward; finally, the slider 8-3 in the locking unit 8 is moved horizontally, and the pin 8-2 is inserted into the blind hole on the rotating shaft 3-1 in the pair of folding wing units 3 on the third layer, thereby playing the role of locking the machine; the deployment of the connecting rod folding portable quadrotor drone is completed.

Claims

1. A portable four-rotor drone with a foldable connecting rod and a protective mechanism, characterized by: It comprises a folding tripod (1), a lower shell (2), a folding wing unit (3), a top cover (4), a flip cover (5), a storage box (6), a connecting rod (7) and a locking unit (8); Two pairs of folding wing units (3) and a lower shell (2) are sequentially provided directly below the bottom surface of the top cover (4). The two pairs of folding wing units (3) are provided in two layers. The top end of the rotating shaft (3-1) of each folding wing unit (3) is rotatably connected to the bottom surface of the top cover (4), and the bottom end of the rotating shaft (3-1) of each folding wing unit (3) is inserted into the interior of the lower shell (2). The lower surface of the lower shell (2) is uniformly processed with four strip-shaped through holes along the circumferential direction. A folding tripod (1) is provided inside each strip-shaped through hole, and the end of the folding tripod (1) is hingedly connected to one end of the strip-shaped through hole. The rotating shaft (3-1) of the wing unit (3) is arranged corresponding to the position of the folding tripod (1), the bottom of the rotating shaft (3-1) is connected to one end of the connecting rod (7) through a ball joint mechanism, the other end of the connecting rod (7) is hinged to the middle of the upper surface of the corresponding folding tripod (1), two locking units (8) are symmetrically provided on the inner bottom surface of the lower shell (2), a storage box (6) is provided in the middle of the lower surface of the top cover (4), and a square through hole is processed in the middle of the upper surface of the top cover (4), a flip cover (5) is provided inside the square through hole, and the long side edge of the flip cover (5) is hinged to the long side edge of the square through hole; The folding wing unit (3) comprises a rotating shaft (3-1), a gear (3-2), a guide limiter (3-3), a protective cover (3-4), a first drive link (3-5), a pin (3-6), a second drive link (3-7), a motor base (3-8), a drive motor (3-9), a wing blade (3-10), a half gear (3-11) and a third drive link (3-12); Two rotating shafts (3-1) are arranged in parallel with each other, and each rotating shaft (3-1) is provided with a gear (3-2), and a first driving link (3-5) is provided on the end surface of the gear (3-2), and the end of the first driving link (3-5) is hingedly connected to one end of the second driving link (3-7) through a pin (3-6), and the two second driving links (3-7) are arranged crosswise, and a driving motor (3-9) is provided on the end of the upper surface of one of the second driving links (3-7), and the driving motor (3-9) is fixedly connected to the upper surface of the second driving link (3-7) through a motor base (3-8), and a wing blade (3-10) is provided on the output shaft of the driving motor (3-9), and each second driving link ( The other end of the No. 3 driving connecting rod (3-7) is hingedly connected to one end of the No. 3 driving connecting rod (3-12), and the two No. 3 driving connecting rods (3-12) are cross-arranged, one of the No. 3 driving connecting rods (3-12) is hingedly connected to one end of the inner side surface of the protective cover (3-4), and the other No. 3 driving connecting rod (3-12) is hingedly connected to the other end of the inner side surface of the protective cover (3-4), and a half gear (3-11) is respectively provided at the two hinge connection points, and the two half gears (3-11) are meshedly connected, and a guide limiter (3-3) is respectively provided at both ends of the protective cover (3-4), and the guide limiter (3-3) is hingedly connected to the end of the protective cover (3-4), and a magnetic ring is provided on the outer surface of the guide limiter (3-3).

2. The portable quad-rotor drone with foldable connecting rod and protective mechanism according to claim 1, characterized in that: The gears (3-2) on the two rotating shafts (3-1) are meshed and connected.

3. The portable quad-rotor drone with a foldable connecting rod and a protective mechanism according to claim 1, characterized in that: The gears (3-2) in one pair of folding wing units (3) are sleeved on the rotating shaft (3-1), and the gears (3-2) are slidably connected to the rotating shaft (3-1); the gears (3-2) in the other pair of folding wing units (3) are sleeved and fixed on the rotating shaft (3-1).

4. The portable quad-rotor drone with a foldable connecting rod and a protective mechanism according to claim 1, characterized in that: The fixed positions of the two locking units (8) inside the lower shell (2) are arranged corresponding to the other pair of folding wing units (3).

5. The portable quad-rotor drone with foldable connecting rod and protective mechanism according to claim 1, characterized in that: The top end of the rotating shaft (3-1) of the folding wing unit (3) passes through the top cover (4) and is fixedly connected to the retaining spring (9).

6. The portable quad-rotor drone with foldable connecting rod and protective mechanism according to claim 1, characterized in that: A pair of blind holes is machined along the circumferential outer surface of the bottom of the rotating shaft (3-1) in each folding wing unit (3).

7. The portable quad-rotor drone with foldable connecting rods and a protective mechanism according to claim 6, characterized in that: The locking unit (8) comprises a No. 1 guide bracket (8-1), a pin (8-2), a slider (8-3), a spring (8-4), a No. 2 guide bracket (8-5) and a guide shaft (8-6); The first guide bracket (8-1) and the second guide bracket (8-5) are symmetrically arranged, and a slider (8-3) is provided between the first guide bracket (8-1) and the second guide bracket (8-5). A guide shaft (8-6) is provided in the middle of one side of the slider (8-3). The end of the guide shaft (8-6) passes through the spring (8-4) and is then inserted into the guide hole on the second guide bracket (8-5). Two pins (8-2) are provided in the middle of the other side of the slider (8-3) in sequence from top to bottom. The top ends of the pins (8-2) pass through the guide holes on the first guide bracket (8-1) and are then inserted into the blind holes at the bottom end of the rotating shaft (3-1).

8. The portable quad-rotor drone with foldable connecting rods and a protective mechanism according to claim 7, characterized in that: A rectangular through hole is machined on the inner bottom surface of the lower shell (2), and the bottom of the slider (8-3) in the locking unit (8) is inserted into the interior of the rectangular through hole.

9. The portable quad-rotor drone with foldable connecting rods and a protective mechanism according to claim 1, characterized in that: The lower shell (2) is slidably connected to the rotating shaft (3-1) in the folding wing unit (3).

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