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CN-224197994-U - Folding arm mechanism of unmanned aerial vehicle

CN224197994UCN 224197994 UCN224197994 UCN 224197994UCN-224197994-U

Abstract

The utility model provides a folding arm mechanism of unmanned aerial vehicle, includes unmanned aerial vehicle cantilever, folding arm, fixing base, button subassembly, pin, first reset spring and threading lid, through the interlocking cooperation of button subassembly with round pin axle, folding arm, operating personnel only need a key to press alright quick unblock, and the function normally open state of locking, along with folding arm rotation open, the angle just can lock voluntarily in place, ensures that cantilever expansion angle accords with the predesigned, and whole function is easy and simple to handle, reliable and stable.

Inventors

  • WU PEIGANG

Assignees

  • 温州飞越航空科技有限公司

Dates

Publication Date
20260505
Application Date
20250520

Claims (9)

  1. 1. The folding arm mechanism of the unmanned aerial vehicle is characterized by comprising an unmanned aerial vehicle cantilever, a folding arm, a fixed seat, a button assembly, a pin, a first reset spring and a threading cover, wherein the folding arm comprises a connecting end and a rotating end, the connecting end and the unmanned aerial vehicle cantilever are detachably sleeved and fixed, the rotating end is provided with a first central through hole, an axial limiting ring is coaxially arranged in the first central through hole, and a first clamping groove is axially arranged on the axial limiting ring; The fixing seat comprises an operation end face and a matching end face, wherein the matching end face is provided with a rotating shaft part matched with the first central through hole, and the outer peripheral surface of the rotating shaft part is axially provided with a guide groove in an extending mode, and the guide groove radially penetrates through the rotating shaft part; The threading cover is detachably and fixedly connected with the rotating shaft part, the rotating end of the folding arm is positioned between the threading cover and the fixed seat, the first central through hole is sleeved on the rotating shaft part for rotary fit, and the folding arm comprises an opening station and a folding station; The two ends of the pin penetrate through the guide groove and extend into the first central through hole to be in sliding fit with the axial end face of the axial limiting ring, and the first reset spring is arranged in the rotating shaft part in a compressed mode and keeps the driving pin to move along the guide groove towards the direction close to the axial limiting ring; when the folding arm rotates to the position of the opening station, the position of the first clamping groove coincides with the position of the guide groove, and the pin is driven by the first reset spring to enter the first clamping groove along the guide groove to limit the rotating movement of the folding arm; The button assembly is arranged in the second central through hole to be in axial sliding fit, and the push button assembly jacking pin leaves the first clamping groove along the guide groove.
  2. 2. The folding arm mechanism of the unmanned aerial vehicle of claim 1, wherein a limiting end face is arranged on one side, facing the rotating end, of the connecting end, a first stopping end face and a second stopping end face are arranged on the outer peripheral face of the fixing seat, corresponding to the opening station and the closing station, an arc transition face is arranged between the first stopping end face and the second stopping end face, the limiting end face abuts against and stops with the first stopping end face or the second stopping end face along with rotation of the folding arm, and the limiting end face is in tangential fit with the arc transition face.
  3. 3. The folding arm mechanism of the unmanned aerial vehicle of claim 2, wherein the guide groove comprises a locking end part close to one side of the matched end surface and an unlocking end part close to one side of the threading cover, and the pin enters the first clamping groove when at one side of the locking end part and leaves the first clamping groove when at one side of the unlocking end part.
  4. 4. The folding arm mechanism of the unmanned aerial vehicle according to claim 3, wherein the folding arm connecting end is provided with a first threading hole penetrating through the first central through hole, the threading cover is provided with a second threading hole communicated with the second central through hole, the outer peripheral surface of the rotating shaft part is provided with an arc threading groove penetrating through the first threading hole and the second threading hole, and the central angle of the arc threading groove is matched with the rotation angle from the opening station to the closing station.
  5. 5. The folding arm mechanism of the unmanned aerial vehicle of claim 4, wherein the two openings of the first central through hole of the folding arm are coaxially provided with a first caulking groove, and a bearing spacer ring and a gasket are coaxially arranged in the first caulking groove.
  6. 6. The folding arm mechanism of the unmanned aerial vehicle of claim 5, wherein the axial limiting ring is provided with a second clamping groove along the axial direction, when the folding arm rotates to the folding station position, the position of the second clamping groove coincides with the position of the guide groove, and the pin is driven by the first return spring to enter the second clamping groove along the guide groove to limit the rotating movement of the folding arm.
  7. 7. The folding arm mechanism of an unmanned aerial vehicle according to any one of claims 1 to 6, wherein the operation end face is provided with a plurality of first mounting screw holes, the button assembly comprises a button seat, a button switch and a button, the button seat is provided with a second mounting hole corresponding to the first mounting screw hole and is fixed with the first mounting screw hole through a screw, the button seat is provided with a third central through hole coaxial with the second central through hole, the button switch comprises a first cap part which is positioned in the second central through hole and is abutted against the pin shaft, a sliding shaft part which is axially and slidably matched with the third central through hole, a threaded hole is formed in the end face, far away from the pin, of the sliding shaft part, the button comprises an operation cap part and a threaded shaft part which is in threaded fit with the threaded hole, and the operation cap is positioned on one side, far away from the second central through hole, of the button seat.
  8. 8. The folding arm mechanism of an unmanned aerial vehicle according to any one of claims 1 to 6, wherein a spring hole is formed in an end face of the rotating shaft portion, which is far away from the matched end face, and penetrates through the spring hole to the guide groove in the axial direction, the first return spring is arranged in the spring hole in a compressed mode, one end of the first return spring keeps the jacking pin to move along the guide groove in the direction close to the axial limiting ring, and the other end of the first return spring abuts against a threading cover for closing the spring hole.
  9. 9. The folding arm mechanism of the unmanned aerial vehicle of claim 7, wherein the first cap portion is provided with a sleeve hole for a pin to pass through, the sleeve hole is sleeved with the pin and axially ascends and descends along with the sliding of the pin along the guide groove, the first reset spring is sleeved on the sliding shaft portion and is arranged between the operating cap and the button seat in a compressed mode, and the first reset spring keeps driving the operating cap to move in a direction away from the button seat and drives the pin to move along the guide groove towards a direction close to the axial limiting ring.

Description

Folding arm mechanism of unmanned aerial vehicle Technical Field The utility model relates to the technical field of unmanned aerial vehicles, in particular to a folding arm mechanism of an unmanned aerial vehicle. Background Most of the existing unmanned aerial vehicles are multiaxial unmanned aerial vehicles, such as four-axis unmanned aerial vehicles, six-axis unmanned aerial vehicles and the like, the whole machine has small take-off weight, but the cantilever is unfolded greatly, and certain difficulties are brought to the transportation, carrying, storage and the like of the unmanned aerial vehicles. Therefore, in order to improve the portability of the unmanned aerial vehicle and reduce the cost of transportation, many unmanned aerial vehicles with foldable cantilevers have appeared. However, the existing foldable cantilever has the technical problems that as the cantilever is switched between the unfolded state and the folded state, after the rotation of the cantilever needs to be ensured to reach the designed position, the cantilever can be kept in a stable locking state, and particularly when the cantilever is unfolded, if the cantilever can not be unfolded smoothly according to the design requirement, the cantilever can be kept in a stable locking state to keep the attitude, and the flight stability of the unmanned aerial vehicle can be influenced. Therefore, a fixing and locking structure is needed to design when the cantilever is in an unfolded state and a folded state, so that the unfolding posture can be automatically locked along with the rotation of the cantilever, the user can conveniently and simply operate and unlock the cantilever, and the mistaken touch and opening can be avoided when the cantilever is transported in the folded state. Disclosure of utility model The utility model provides a folding arm mechanism of an unmanned aerial vehicle for solving the defects of the technology. The folding arm mechanism of the unmanned aerial vehicle comprises an unmanned aerial vehicle cantilever, a folding arm, a fixed seat, a button assembly, a pin, a first reset spring and a threading cover, wherein the folding arm comprises a connecting end and a rotating end, the connecting end and the unmanned aerial vehicle cantilever are detachably sleeved and fixed, the rotating end is provided with a first central through hole, an axial limiting ring is coaxially arranged in the first central through hole, and a first clamping groove is axially arranged on the axial limiting ring; The fixing seat comprises an operation end face and a matching end face, wherein the matching end face is provided with a rotating shaft part matched with the first central through hole, and the outer peripheral surface of the rotating shaft part is axially provided with a guide groove in an extending mode, and the guide groove radially penetrates through the rotating shaft part; The threading cover is detachably and fixedly connected with the rotating shaft part, the rotating end of the folding arm is positioned between the threading cover and the fixed seat, the first central through hole is sleeved on the rotating shaft part for rotary fit, and the folding arm comprises an opening station and a folding station; The two ends of the pin penetrate through the guide groove and extend into the first central through hole to be in sliding fit with the axial end face of the axial limiting ring, and the first reset spring is arranged in the rotating shaft part in a compressed mode and keeps the driving pin to move along the guide groove towards the direction close to the axial limiting ring; when the folding arm rotates to the position of the opening station, the position of the first clamping groove coincides with the position of the guide groove, and the pin is driven by the first reset spring to enter the first clamping groove along the guide groove to limit the rotating movement of the folding arm; The button assembly is arranged in the second central through hole to be in axial sliding fit, and the push button assembly jacking pin leaves the first clamping groove along the guide groove. By adopting the technical scheme, when the cantilever is required to be unfolded and flown, the cantilever is operated to rotate, the connecting end is driven to rotate around the rotating shaft part, and when the connecting end rotates to a preset opening station position, the position of the first clamping groove coincides with the position of the guide groove, the pin is driven by the first reset spring to enter the first clamping groove along the guide groove, and the rotating movement of the folding arm is limited, so that the cantilever is locked to keep a preset unfolding angle, and the unfolding and the flying are stabilized; When the folding cantilever is required to be stored, the control button assembly slides along the second central through hole, the jacking pin leaves the first clamping groove along the guide groove, the rotating