A large-torque unmanned aerial vehicle rotating shaft

Abstract

The present application relates to a kind of unmanned aerial vehicle rotating shaft of large torsion, belong to unmanned aerial vehicle parts technical field, comprising: shaft core, outer cam, inner cam, snap spring, spring and shell;Wherein, the unmanned aerial vehicle rotating shaft further includes abutting block and adjusting assembly, abutting block is set between spring and barrel bottom, and abutting block is movably set in shaft core, adjusting assembly is used to adjust the distance between abutting block and inner cam, to change the compression amount of spring.The present application sets up abutting block between spring and barrel bottom, changes the spring compression amount between inner cam and abutting block, realizes the accurate regulation of spring elasticity, can reduce the replacement frequency of spring by the regular debugging of adjusting assembly, prolongs the service life of unmanned aerial vehicle rotating shaft.

Description

Technical Field

[0001] This invention belongs to the field of drone parts technology, specifically relating to a drone shaft with high torque. Background Technology

[0002] Early drones had their arms and fuselage fixedly connected. Later, to increase portability, the arms and fuselage were designed to be rotatably connected.

[0003] For example, utility model patent CN208216972U discloses a swivel shaft for a drone arm, comprising: a shaft core, an outer cam, an inner cam, a spring, and a retaining ring; one end of the shaft core has a step, and the other end passes sequentially through the outer cam, the inner cam, and the spring before being engaged and fixed with the retaining ring, the spring being compressed to reliably engage the outer cam and the inner cam; and the relative rotation angle between the outer cam and the inner cam is divided into three segments: a closed segment, a free segment, and an open segment. This swivel shaft for a drone arm can be used as a standard part for the rotatable connection between drone arms and the fuselage of various specifications, and its three-segment rotation angle design makes it more convenient to use and provides a better user experience.

[0004] Based on the search of the aforementioned patent grant announcement numbers, and considering their shortcomings, the following was found:

[0005] When traditional drone hinges are subjected to frequent folding and unfolding operations, the springs of the drone hinges are in a state of constant compression and release, which can easily lead to fatigue wear of the springs, reduce their elasticity, and thus affect the meshing force between the inner and outer cams, shortening the service life of the hinge. Summary of the Invention

[0006] To address the problem that traditional drone hinges, when subjected to frequent folding and unfolding operations, cause the springs to be in a constant state of compression and release, leading to fatigue wear, reduced elasticity, and consequently affecting the meshing force between the inner and outer cams and shortening the hinge's lifespan, this invention provides a drone hinge with high torque.

[0007] The objective of this invention can be achieved through the following technical solutions:

[0008] A high-torque drone shaft includes: a shaft core, an outer cam, an inner cam, a retaining ring, a spring, and a housing; one end of the shaft core has a step, and the other end passes sequentially through the outer cam, the inner cam, and the spring, and is then engaged and fixed with the retaining ring, wherein the spring is compressed to reliably engage the outer cam and the inner cam; the housing is barrel-shaped, with one open end being closed by the outer cam, and the bottom of the barrel at the other end passing through the shaft core, and the bottom of the barrel being located between the retaining ring and the spring, thereby enclosing the spring and the inner cam within the housing; wherein the drone shaft further includes an abutment block and an adjustment assembly, the abutment block being disposed between the spring and the bottom of the barrel, and the abutment block being movably sleeved on the shaft core, and the adjustment assembly being used to adjust the distance between the abutment block and the inner cam to change the compression of the spring.

[0009] As a preferred embodiment of the present invention, the other end of the shaft is provided with an adjustment hole along the axial direction; the adjustment assembly includes an adjustment screw threaded to the adjustment hole; the abutment block includes a sliding part disposed in the adjustment hole, a connecting part extending radially from the outer periphery of the sliding part through the shaft, and an abutment part connected to the side of the connecting part that extends through the shaft, the sliding part abutting against the end of the adjustment screw that extends into the adjustment hole, and the abutment part abutting against the spring; the shaft is provided with an opening along the axial direction corresponding to the sliding path of the connecting part.

[0010] As a preferred embodiment of the present invention, the bottom of the bucket is provided with an electrically controlled telescopic component, the telescopic end of which is located between the abutment block and the bottom of the bucket, and the telescopic end of which moves axially along the shaft.

[0011] As a preferred embodiment of the present invention, the drone pivot further includes an altitude sensor and a controller, the controller being electrically connected to the electronically controlled telescopic component; when the altitude sensor detects that the flight altitude of the drone pivot is lower than a preset threshold, the controller controls the telescopic end of the electronically controlled telescopic component to extend a first distance; when the altitude sensor detects that the flight altitude of the drone pivot is not less than the preset threshold, the controller controls the telescopic end of the electronically controlled telescopic component to extend a second distance; wherein, the first distance is less than the second distance.

[0012] As a preferred embodiment of the present invention, an elastic element is provided between the outer cam and the inner cam. One end of the elastic element is detachably connected to the outer cam, and the other end of the elastic element is detachably connected to the inner cam. The elastic element is used to provide opposing tensions to the outer cam and the inner cam.

[0013] As a preferred embodiment of the present invention, a rotating ring is provided on the outer periphery of the inner cam, the rotating ring is rotatably disposed on the inner cam, and the other end of the elastic member is detachably connected to the rotating ring.

[0014] As a preferred embodiment of the present invention, a guide rod is provided between the rotating ring and the outer cam, and the guide rod is parallel to the shaft core; the guide rod is fixedly connected to the outer cam, and the guide rod passes through the rotating ring and is axially slidably connected to the rotating ring.

[0015] As a preferred embodiment of the present invention, the rotating ring is provided with a hook, and the other end of the elastic element is hung on the hook.

[0016] As a preferred embodiment of the present invention, the drone pivot includes a press-to-unlock mechanism, which includes a press element and a response-to-unlock component. Both the press element and the response-to-unlock component are disposed on the pivot. When the press element is operated, the response-to-unlock component is triggered, so that the other end of the elastic element disengages from the hook.

[0017] As a preferred embodiment of the present invention, the relative rotation angle between the outer cam and the inner cam is divided into three segments: a closed segment, a free segment, and an open segment. When an external force is applied so that the relative angle between the outer cam and the inner cam is within the closed segment, the drone shaft automatically closes after the external force is removed. When an external force is applied so that the relative angle between the outer cam and the inner cam is within the open segment, the drone shaft automatically opens after the external force is removed. When an external force is applied so that the relative angle between the outer cam and the inner cam is within the free segment, the drone shaft maintains the angle after the external force is removed.

[0018] The beneficial effects of this invention are as follows:

[0019] This invention features an abutment block between the spring and the bottom of the barrel. By adjusting the position of the abutment block using an adjustment component, the compression of the spring between the inner cam and the abutment block is altered. Utilizing the characteristic that spring force is proportional to compression, precise adjustment of the spring force is achieved to meet the force requirements of different operating conditions. Regular adjustment of the adjustment component ensures the spring operates within a reasonable stress range, preventing fatigue wear caused by excessive compression or stretching, extending the service life of the drone's rotating shaft, reducing spring replacement frequency, and lowering maintenance costs. Attached Figure Description

[0020] To facilitate understanding by those skilled in the art, the present invention will be further described below with reference to the accompanying drawings.

[0021] Figure 1 This is an exploded view of a high-torque unmanned aerial vehicle (UAV) shaft according to the present invention.

[0022] Figure 2 This is an assembly diagram of a high-torque drone shaft according to the present invention;

[0023] Figure 3 This is a first cross-sectional view of a high-torque drone shaft according to the present invention.

[0024] Figure 4 This is a cross-sectional view of a high-torque drone shaft that utilizes an adjusting screw to compress a spring, according to the present invention.

[0025] Figure 5 This is a cross-sectional view of a high-torque drone shaft according to the present invention, which utilizes an electronically controlled telescopic component to compress a spring.

[0026] Figure 6 This is a schematic diagram of the abutment block structure of a high-torque drone shaft according to the present invention;

[0027] Figure 7 This is a cross-sectional view of the outer cam, inner cam, and shaft core first mating structure of a high-torque UAV shaft according to the present invention;

[0028] Figure 8 for Figure 7 A magnified structural diagram of part A;

[0029] Figure 9 This is a cross-sectional view of the outer cam, inner cam, and shaft core second mating structure of a high-torque UAV shaft according to the present invention;

[0030] Figure 10 for Figure 9 A schematic diagram of the enlarged structure of part B;

[0031] Figure 11 This is a cross-sectional view of the outer cam, inner cam, and shaft core third mating structure of a high-torque UAV shaft according to the present invention.

[0032] Figure 12 for Figure 11 A magnified structural diagram of part C.

[0033] Explanation of main symbols

[0034] In the picture:

[0035] 10. Shaft core; 11. Step; 12. Adjustment hole; 20. Outer cam; 21. Snap ring; 30. Inner cam; 40. Snap ring; 50. Spring; 60. Outer shell; 61. Bottom of barrel; 62. Electrically controlled telescopic component; 70. Abutment block; 71. Sliding part; 72. Connecting part; 73. Abutment part; 80. Adjusting screw; 90. Elastic component; 100. Rotating ring; 101. Guide rod; 102. Hook; 110. Pressing component; 111. Recessed area; 112. Second spring; 120. Slider; 121. Third spring. Detailed Implementation

[0036] To further illustrate the technical means and effects of the present invention in achieving its intended purpose, the following detailed description of the specific implementation methods, structures, features, and effects of the present invention, in conjunction with the accompanying drawings and preferred embodiments, is provided.

[0037] In traditional drone hinges, the internal spring 50 is prone to fatigue wear due to frequent folding and unfolding operations, resulting in reduced elasticity. This, in turn, affects the meshing force between the outer cam 20 and the inner cam 30, shortening the lifespan of the drone hinge. Therefore, this invention designs a drone hinge capable of adjusting the compression of the spring 50 to maintain stable elasticity under different operating conditions, ensuring reliable meshing between the outer cam 20 and the inner cam 30, and meeting the drone's requirements for hinge stability and durability. Detailed explanation follows.

[0038] Please see Figures 1-2 This invention provides a high-torque drone shaft, comprising: a shaft core 10, an outer cam 20, an inner cam 30, a retaining ring 40, a spring 50, and a housing 60; one end of the shaft core 10 has a step 11, and the other end passes sequentially through the outer cam 20, the inner cam 30, and the spring 50, and is then engaged with the retaining ring 40, thereby compressing the spring 50 and reliably engaging the outer cam 20 and the inner cam 30; the housing 60 is barrel-shaped, with one end of its opening being closed by the outer cam 20, and the bottom 61 of the other end passing through the shaft core 10, and the bottom 61 being located between the retaining ring 40 and the spring 50, thereby enclosing the spring 50 and the inner cam 30 within the housing 60; wherein, the drone shaft further includes an abutment block 70 and an adjustment assembly, the abutment block 70 being disposed between the spring 50 and the bottom 61, and the abutment block 70 being movably sleeved on the shaft core 10, and the adjustment assembly being used to adjust the distance between the abutment block 70 and the inner cam 30 to change the compression of the spring 50.

[0039] It is understood that the shaft core 10, outer cam 20, inner cam 30, retaining ring 40, spring 50, and outer shell 60 constitute the basic framework of the UAV's rotating shaft. The step 11 at one end of the shaft core 10 and the retaining ring 40 at the other end form a fixed support. The spring 50 is installed between the outer cam 20 and the inner cam 30 and is compressed, generating elastic force to tightly engage the outer cam 20 and the inner cam 30. In this embodiment, by setting an abutment block 70 and an adjustment component, the abutment block 70 is positioned between the spring 50 and the bottom 61 of the outer shell 60 and can move axially along the shaft core 10. The adjustment component acts on the abutment block 70, changing the distance between it and the inner cam 30, thereby adjusting the compression of the spring 50. When the abutment block 70 moves towards the inner cam 30, the spring 50 is further compressed, and the elastic force of the spring 50 increases; conversely, the elastic force of the spring 50 decreases. Utilizing the characteristic that the elastic force of the spring 50 is proportional to the amount of compression, precise adjustment of the elastic force is achieved.

[0040] In this embodiment, the position of the abutment block 70 is precisely controlled by the adjusting component, enabling continuous adjustment of the compression of the spring 50 to meet the elastic force requirements under different working conditions. For example, the elastic force can be increased to enhance the meshing force in low-temperature or high-load environments. Simultaneously, the periodic adjustment of the abutment block 70 by the adjusting component can avoid elastic errors caused by fatigue wear of the spring 50 due to excessive compression or stretching, ensuring that the spring 50 always operates within a reasonable stress range, extending its service life, reducing replacement frequency, and lowering maintenance costs.

[0041] In some embodiments, the relative rotation angle between the outer cam 20 and the inner cam 30 is divided into three segments: a closed segment, a free segment, and an open segment. When an external force is applied so that the relative angle between the outer cam 20 and the inner cam 30 is within the closed segment, the drone shaft automatically closes after the external force is removed. When an external force is applied so that the relative angle between the outer cam 20 and the inner cam 30 is within the open segment, the drone shaft automatically opens after the external force is removed. When an external force is applied so that the relative angle between the outer cam 20 and the inner cam 30 is within the free segment, the drone shaft maintains the angle after the external force is removed. It should be noted that for different materials and spring 50 parameters, the function of each segment of the surface needs to be adjusted by setting the slope of the working surfaces of the outer cam 20 and the inner cam 30 to achieve the functional distinction between the closed segment, the free segment, and the open segment. These are existing technologies and will not be described in detail here.

[0042] Please see Figures 3-6In some embodiments, the other end of the shaft core 10 is provided with an adjusting hole 12 along the axial direction; the adjusting assembly includes an adjusting screw 80 threadedly connected to the adjusting hole 12; the abutment block 70 includes a sliding part 71 disposed in the adjusting hole 12, a connecting part 72 extending radially from the outer periphery of the sliding part 71 through the shaft core 10, and an abutment part 73 connected to the side of the connecting part 72 that extends through the shaft core 10, the sliding part 71 abutting against the end of the adjusting screw 80 that extends into the adjusting hole 12, and the abutment part 73 abutting against the spring 50; the shaft core 10 is provided with an opening along the axial direction corresponding to the sliding path of the connecting part 72. The adjusting screw 80 is inserted from the other end of the shaft core 10.

[0043] Understandably, since the adjusting screw 80 is threadedly connected to the adjusting hole 12 of the shaft core 10, when the adjusting screw 80 is rotated, it moves axially within the adjusting hole 12. Furthermore, since the sliding part 71 of the abutment block 70 abuts against the end of the adjusting screw 80, the movement of the adjusting screw 80 will cause the abutment block 70 to move axially along the shaft core 10, thereby changing the distance between the abutment block 70 and the inner cam 30, thus adjusting the compression of the spring 50. In other words, by controlling the rotation of the adjusting screw 80, the degree of compression of the spring 50 can be precisely adjusted, thereby changing the elastic force of the spring 50.

[0044] Specifically, when it is necessary to increase the spring force of spring 50, rotate the adjusting screw 80 clockwise to move it into the adjusting hole 12. The abutment block 70 moves towards the inner cam 30 under the push of the adjusting screw 80, further compressing spring 50. Conversely, rotate the adjusting screw 80 counterclockwise, and the abutment block 70 moves outward, reducing the compression of spring 50 and decreasing the spring force. After adjustment, loosen the adjusting screw 80. The abutment block 70 remains in the new position under the action of the spring force of spring 50, and the shaft continues to work with the adjusted spring force.

[0045] In some embodiments, the bottom 61 of the barrel is provided with an electrically controlled telescopic member 62. The telescopic end of the electrically controlled telescopic member 62 is located between the abutment block 70 and the bottom 61 of the barrel. The telescopic end of the electrically controlled telescopic member 62 moves axially along the shaft core 10. Optionally, the electrically controlled telescopic member 62 can be an electric push rod or an electrically controlled cylinder, etc. The telescopic end of the electrically controlled telescopic member 62 extends or retracts when it receives a control signal. When the telescopic end extends, it pushes the abutment block 70 to move in the direction of the inward cam 30, causing the spring 50 to be further compressed and the elastic force to increase. When the telescopic end retracts, the abutment block 70 moves outward under the action of the elastic force of the spring 50, the compression of the spring 50 decreases, and the elastic force decreases. It can be understood that, compared with the previous embodiment where the position of the abutment block 70 is adjusted by manually rotating the adjusting screw 80, this embodiment controls the position of the abutment block 70 by extending the telescopic end of the electrically controlled telescopic member 62, giving the UAV shaft intelligent characteristics, facilitating integration with the UAV's flight control system, realizing automated control, reducing the burden on operators, and improving the intelligence level of the UAV.

[0046] Furthermore, the drone's hinge also includes an altitude sensor and a controller, with the controller electrically connected to the electronically controlled telescopic component 62. When the altitude sensor detects that the drone's hinge's flight altitude is below a preset threshold, the controller controls the telescopic end of the electronically controlled telescopic component 62 to extend by a first distance. When the altitude sensor detects that the drone's hinge's flight altitude is not less than the preset threshold, the controller controls the telescopic end of the electronically controlled telescopic component 62 to extend by a second distance; wherein the first distance is less than the second distance. The altitude sensor is used to monitor the drone's hinge's flight altitude in real time and transmit the altitude signal to the controller. The controller, based on the preset altitude threshold and control logic, sends a control signal to the electronically controlled telescopic component 62 to adjust the telescopic distance of its telescopic end.

[0047] It should be explained that when the altitude sensor detects that the flight altitude is below a preset threshold, the controller determines that the drone is in low-altitude flight. At this time, a smaller elastic force is needed from the spring 50 to maintain the flexibility of the drone's arm movement. Therefore, the controller controls the telescopic end of the electronically controlled telescopic component 62 to extend a first distance. When the flight altitude is not less than the preset threshold, the controller determines that the drone is in high-altitude flight. At this time, a larger elastic force is needed to enhance stability. Therefore, the controller controls the telescopic end of the electronically controlled telescopic component 62 to extend a second distance (the second distance is greater than the first distance), causing the abutment block 70 to move towards the inward cam 30, further compressing the spring 50 and increasing the elastic force of the spring 50. When the flight mission ends or the initial elastic force needs to be restored, the controller can send a reset signal to return the telescopic end of the electronically controlled telescopic component 62 to its initial position, and the spring 50 returns to its pre-compressed state.

[0048] In this embodiment, the spring force of spring 50 is increased during high-altitude flight to enhance the stability and anti-interference capability of the UAV's rotating shaft, reduce vibration and shaking caused by factors such as airflow, and ensure flight safety. At low altitudes, a smaller spring force is used in spring 50 to avoid unnecessary energy consumption and component wear caused by excessive spring force, while ensuring the flexibility of the rotating shaft. Optionally, the altitude sensor can be one or more of the following: a barometer-type altitude sensor, an ultrasonic altimeter, a lidar altimeter, and a GPS altitude sensor.

[0049] Please see Figures 9-12 In some embodiments, an elastic element 90 is provided between the outer cam 20 and the inner cam 30. One end of the elastic element 90 is detachably connected to the outer cam 20, and the other end of the elastic element 90 is detachably connected to the inner cam 30. The elastic element 90 is used to provide opposing tensions to the outer cam 20 and the inner cam 30.

[0050] Understandably, the elastic element 90 works in conjunction with the existing spring 50. Spring 50 provides axial elastic force, ensuring a tight meshing between the outer cam 20 and the inner cam 30; while the elastic element 90 provides opposing tensile forces to the outer cam 20 and the inner cam 30, further enhancing the meshing force and making the shaft more stable and reliable under torque. When the shaft rotates or is subjected to external forces, the elastic element 90 and spring 50 work together to resist the external forces, ensuring the stability and reliability of the shaft. Furthermore, the two ends of the elastic element 90 are detachably connected to the outer cam 20 and the inner cam 30. When the elastic element 90 needs replacement, the detachable connections at both ends are loosened, the old elastic element 90 is removed, a new elastic element 90 is installed, and the connections are reconnected. This facilitates replacement when the elastic element 90 is fatigued or damaged, eliminating the need to replace the entire shaft and reducing maintenance costs.

[0051] Optionally, the elastic element 90 can be a nylon elastic rope or elastic webbing, which has the advantages of being lightweight, flexible, and easy to install. The two ends of the nylon elastic rope and elastic webbing can be connected to the inner cam 30 or the outer cam 20 through a fastening buckle.

[0052] Please see Figures 7-8 In some embodiments, a rotating ring 100 is provided on the outer periphery of the inner cam 30. The rotating ring 100 is rotatably disposed on the inner cam 30, and the other end of the elastic member 90 is detachably connected to the rotating ring 100.

[0053] It should be explained that when designing the elastic element 90 to connect the outer cam 20 and the inner cam 30, the designers found that if the elastic element 90 is directly connected to the inner cam 30, the elastic element 90 will rotate along with the outer cam 20, thereby generating a torsional torque on the inner cam 30. Since the inner cam 30 is designed to move axially only within the housing 60 and not rotate, this torsional torque will hinder the axial movement of the inner cam 30, increasing the friction between the inner cam 30 and the housing 60. This additional friction will not only affect the smooth movement of the inner cam 30, but may also cause the inner cam 30 to jam or deviate during axial movement, thereby disrupting the precise meshing between the outer cam 20 and the inner cam 30. In view of this, this embodiment designs a rotating ring 100, which is installed on the outer periphery of the inner cam 30 and can rotate freely. One end of the elastic element 90 is connected to the outer cam 20, and the other end is connected to the rotating ring 100. Thus, when the outer cam 20 rotates, the rotating ring 100 rotates accordingly without transmitting torsional torque to the inner cam 30, thereby avoiding interference with the axial movement of the inner cam 30. This ensures that the inner cam 30 can move smoothly axially within the housing 60, guarantees the tight meshing between the outer cam 20 and the inner cam 30, improves the stability and reliability of the shaft, and extends its service life.

[0054] Furthermore, a guide rod 101 is provided between the rotating ring 100 and the outer cam 20, and the guide rod 101 is parallel to the shaft core 10; the guide rod 101 is fixedly connected to the outer cam 20, and the guide rod 101 passes through the rotating ring 100 and is axially slidably connected to the rotating ring 100.

[0055] Specifically, when the drone's swivel is folded or unfolded, the outer cam 20 rotates, which in turn drives the rotating ring 100 to rotate via the guide rod 101. At the same time, the guide rod 101 ensures the linear motion of the rotating ring 100, preventing the rotating ring 100 from tilting or shifting, thus ensuring the stability and reliability of the drone's swivel when subjected to torque and axial force.

[0056] like Figures 9-12 As shown, in some embodiments, the rotating ring 100 is provided with a hook 102, and the other end of the elastic member 90 is hung on the hook 102.

[0057] Understandably, one end of the elastic element 90 is detachably connected to the retaining ring 21 on the outer cam 20, and the other end is connected to the hook 102 via a collar, allowing the elastic element 90 to be stably connected between the outer cam 20 and the rotating ring 100, providing opposing tension to the outer cam 20 and the inner cam 30. During shaft operation, the elastic element 90, through the connection of the collar, hook 102, and retaining ring 21, stably transmits the tension to the outer cam 20 and the rotating ring 100, thereby acting on the inner cam 30, ensuring tight engagement between the outer cam 20 and the inner cam 30, and improving the stability and reliability of the shaft under torque and axial force. Specifically, during installation, the collar at one end of the elastic element 90 should be hooked onto the retaining ring 21, and the collar at the other end should be hooked onto the hook 102. At this time, the outer cam 20 and the inner cam 30 remain tightly engaged under the combined action of the spring 50 and the elastic element 90.

[0058] Optionally, the retaining ring 21 is a ring body with its ends connected. One end of the elastic element 90 is provided with an openable buckle, and the retaining ring 21 is connected through the buckle to realize the connection between the elastic element 90 and the outer cam 20; or, one end of the elastic element 90 is wrapped around the ring body and knotted to realize the connection between the elastic element 90 and the outer cam 20.

[0059] In some embodiments, the drone pivot includes a press-to-unlock mechanism, which includes a press member 110 and a response unlocking component, both of which are disposed on the pivot 10; when the press member 110 is operated, the response unlocking component is triggered to disengage the other end of the elastic member 90 from the hook 102.

[0060] Specifically, when the operator presses the pressing part 110, the pressing part 110 transmits force to the response unlocking component, which disengages one end of the elastic element 90 from the hook 102, thus unlocking the elastic element 90. After unlocking, the operator can directly remove the failed elastic element 90, install a new elastic element 90, and reattach it to the hook 102 and the retaining ring 21 to restore the normal operation of the shaft.

[0061] In some embodiments, the opening formed by the hook 102 for disengaging the elastic member 90 faces upward. Without obstruction, the other end of the elastic member 90 will disengage from the hook 102 under the action of elastic restoring force and exit through the opening of the hook 102. The responsive unlocking assembly includes a slider 120 connected to the hook 102, a first slot is formed in the radial direction of the rotating ring 100, a second slot is formed in the radial direction of the inner cam 30, a vertical hole is formed in the axial direction of the shaft core 10 for inserting the pressing member 110, and a third slot is formed in the radial direction of the shaft core 10. The third slot communicates with the vertical hole, and the first slot, the second slot, and the third slot are connected. The slider 120 passes through the first slot, the second slot, and the third slot and abuts against the pressing member 110. When the pressing member 110 is in the initial unoperated state, the slider 120 abuts against the recessed area 111 of the pressing member 110. At this time, the hook 102 is received in the first slot, and the opening of the hook 102 is blocked by the slot wall of the first slot, so the elastic member 90 cannot be dislodged through the opening. When the pressing member 110 is operated to the unlocked state, the pressing member 110 moves down in the vertical hole, so that the slider 120 abuts against the protruding area of ​​the pressing member 110 relative to the recessed area 111, so that the slider 120 is pushed to move radially outward. At this time, the hook 102 extends outward from the first slot, the opening of the hook 102 opens, and the elastic member 90 can be dislodged.

[0062] Optionally, a second spring 112 is provided between the pressing member 110 and the shaft core 10. The second spring 112 is used to provide the elastic force for the pressing member 110 to return to its initial state, that is, to provide the elastic force for the pressing member 110 to move outward from the vertical hole. Optionally, a third spring 121 is provided between the slider 120 and the second slot. The third spring 121 is used to provide the elastic force for the slider 120 to move in the direction of the pressing member 110, that is, to provide the elastic force for the slider 120 to move radially inward into the vertical hole after passing through the first slot, the second slot, and the third slot.

[0063] Specifically, in the initial state when the pressing member 110 is not pressed, one end of the elastic member 90 is hooked on the hook 102 on the rotating ring 100, and the other end is connected to the retaining ring 21 on the outer cam 20 through a collar. The elastic member 90 is in a tensioned state, and the opening of the hook 102 faces upward, but is blocked by the groove wall of the first slot, so the elastic member 90 cannot be dislodged. The slider 120 abuts against the recessed area 111 of the pressing member 110, and the hook 102 is received in the first slot. When the pressing member 110 is pressed, the pressing member 110 moves downward in the vertical hole, and the slider 120 abuts against the protruding area of ​​the pressing member 110. The slider 120 is pushed to move radially outward, and the hook 102 extends outward from the first slot. The opening of the hook 102 opens, and the elastic member 90 dislodles from the hook 102 under the action of elastic restoring force. After unlocking, the operator can directly remove the faulty elastic element 90 from the retaining ring 21, install a new elastic element 90, and reattach it to the retaining ring 21 and the hook 102 to restore the normal operation of the shaft. It should be noted that when installing the new elastic element 90 onto the hook 102, the pressing element 110 must first be pressed down to extend the hook 102 from the first slot. After hooking the elastic element 90 onto the hook 102, the pressing element 110 must be released to allow the hook 102 to retract into the first slot.

[0064] The above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention in any way. Although the present invention has been disclosed above with reference to preferred embodiments, it is not intended to limit the present invention. Any person skilled in the art can make some modifications or alterations to the above-disclosed technical content to create equivalent embodiments without departing from the scope of the present invention. Any simple modifications, equivalent changes and alterations made to the above embodiments based on the technical essence of the present invention without departing from the scope of the present invention shall still fall within the scope of the present invention.

Claims

1. A high-torque unmanned aerial vehicle (UAV) pivot, characterized in that, include: Shaft, outer cam, inner cam, snap ring, spring, and housing; One end of the shaft has a step, and the other end passes sequentially through the outer cam, inner cam, and spring before being engaged and fixed with the snap ring. The spring is compressed, which reliably engages the outer cam and inner cam. The outer shell is barrel-shaped, with one end of its opening being inserted and closed by the outer cam. The bottom of the barrel at the other end passes through the shaft and is located between the snap ring and the spring, thereby enclosing the spring and the inner cam inside the outer shell. The drone shaft further includes an abutment block and an adjustment component. The abutment block is disposed between the spring and the bottom of the barrel, and the abutment block is movably sleeved on the shaft core. The adjustment component is used to adjust the distance between the abutment block and the inner cam to change the compression of the spring. The other end of the shaft is provided with an adjustment hole along the axial direction; the adjustment assembly includes an adjustment screw threaded into the adjustment hole; the abutment block includes a sliding part disposed in the adjustment hole, a connecting part extending radially from the outer periphery of the sliding part through the shaft, and an abutment part connected to the side of the connecting part that extends through the shaft, the sliding part abutting against the end of the adjustment screw that extends into the adjustment hole, and the abutment part abutting against the spring; the shaft is provided with an opening along the axial direction corresponding to the sliding path of the connecting part; The bottom of the bucket is provided with an electrically controlled telescopic component. The telescopic end of the electrically controlled telescopic component is located between the abutment block and the bottom of the bucket. The telescopic end of the electrically controlled telescopic component moves axially along the shaft core.

2. The high-torque UAV pivot according to claim 1, characterized in that, The drone's rotating shaft also includes an altitude sensor and a controller, the controller being electrically connected to the electronically controlled telescopic component; when the altitude sensor detects that the drone's rotating shaft's flight altitude is lower than a preset threshold, the controller controls the telescopic end of the electronically controlled telescopic component to extend a first distance; when the altitude sensor detects that the drone's rotating shaft's flight altitude is not less than the preset threshold, the controller controls the telescopic end of the electronically controlled telescopic component to extend a second distance; wherein, the first distance is less than the second distance.

3. The high-torque UAV pivot according to claim 1, characterized in that, An elastic element is provided between the outer cam and the inner cam. One end of the elastic element is detachably connected to the outer cam, and the other end of the elastic element is detachably connected to the inner cam. The elastic element is used to provide opposing tension to the outer cam and the inner cam.

4. The high-torque UAV pivot according to claim 3, characterized in that, A rotating ring is provided on the outer periphery of the inner cam, and the rotating ring is rotatably disposed on the inner cam. The other end of the elastic element is detachably connected to the rotating ring.

5. The high-torque UAV pivot according to claim 4, characterized in that, A guide rod is provided between the rotating ring and the outer cam, and the guide rod is parallel to the shaft core; the guide rod is fixedly connected to the outer cam, and the guide rod passes through the rotating ring and is axially slidably connected to the rotating ring.

6. The high-torque UAV pivot according to claim 4, characterized in that, The rotating ring is provided with a hook, and the other end of the elastic element is attached to the hook.

7. The high-torque UAV pivot according to claim 6, characterized in that, The drone pivot includes a press-to-unlock mechanism, which includes a press element and a response unlocking component. Both the press element and the response unlocking component are disposed on the pivot. When the press element is operated, the response unlocking component is triggered, causing the other end of the elastic element to disengage from the hook.

8. The high-torque UAV pivot according to claim 1, characterized in that, The relative rotation angle between the outer cam and the inner cam is divided into three segments: a closed segment, a free segment, and an open segment. When an external force is applied so that the relative angle between the outer cam and the inner cam is within the closed segment, the drone shaft automatically closes after the external force is removed. When an external force is applied so that the relative angle between the outer cam and the inner cam is within the open segment, the drone shaft automatically opens after the external force is removed. When an external force is applied so that the relative angle between the outer cam and the inner cam is within the free segment, the drone shaft maintains the angle after the external force is removed.

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