Wing folding device and unmanned aerial vehicle

Abstract

The invention discloses a wing folding device and an unmanned aerial vehicle. The wing folding device comprises a fixing seat used for being connected to a fuselage; the movable seat is used for being connected to the folding wing and is rotationally arranged with the fixed seat; the driving mechanism is connected to the fixed seat; the first locking mechanism is used for at least locking the movable seat in an unfolded state relative to the fixed seat; the second locking mechanism is connected to the fixed seat and comprises an adapter piece, a pull rod and a lock pin, the adapter piece, the pull rod and the first locking piece are sequentially connected, and the lock pin is connected to the adapter piece and used for locking the movable seat in the folded state; and the connecting rod transmission mechanism is rotationally connected between the driving mechanism and the adapter and is used for driving the second locking mechanism to move under the driving of the driving mechanism. According to the wing folding device, rotating folding and rotating unfolding of the folding wings can be achieved, and the storage space can be reduced when the wing folding device is in the folding state.

Description

Technical Field

[0001] The present invention relates to the technical field of unmanned aerial vehicles, and particularly to a wing folding device and an unmanned aerial vehicle. Background Art

[0002] A vertical takeoff and landing fixed-wing unmanned aerial vehicle is an unmanned aerial vehicle that effectively combines the vertical takeoff and landing capabilities of a multi-rotor unmanned aerial vehicle and the high-efficiency cruising capabilities of a fixed-wing unmanned aerial vehicle. It has the characteristics of long flight time, high speed, and long distance of a fixed-wing unmanned aerial vehicle, and also has the function of vertical takeoff and landing of a multi-rotor unmanned aerial vehicle.

[0003] Due to its unique takeoff, landing, and cruising performance, fixed-wing unmanned aerial vehicles have great application prospects in industries such as military and police reconnaissance, border patrol, oil and gas pipeline inspection, power inspection, forest fire fighting, and surveying and mapping. However, because the vertical takeoff and landing fixed-wing unmanned aerial vehicle has a fixed wing structure, it has problems of large floor area and difficult storage during transportation, carrying, and parking. Summary of the Invention

[0004] To solve at least one of the problems existing in the above-mentioned prior art, according to one aspect of the present invention, a wing folding device is provided, including: A fixed seat for connecting to the fuselage; A movable seat for connecting to the folding wing and rotatably arranged with the fixed seat; A driving mechanism connected to the fixed seat for applying a driving force; A first locking mechanism for at least locking the movable seat relative to the fixed seat in an unfolded state, including a first locking member and a second locking member that can lock or separate from each other, the first locking member is connected to the movable seat, and the second locking member is connected to the fixed seat; A second locking mechanism connected to the fixed seat, including an adapter, a pull rod, and a locking pin, the adapter, the pull rod, and the first locking member are connected in sequence, and the locking pin is connected to the adapter for locking the movable seat in a folded state; A link transmission mechanism rotatably connected between the driving mechanism and the adapter for driving the second locking mechanism to move under the drive of the driving mechanism; Wherein, under the drive of the driving mechanism, the first locking member and the second locking member are unlocked so that the movable seat can rotate with the fixed seat, thereby realizing the unfolding or folding of the movable seat relative to the fixed seat, and realizing the folding or unfolding of the folding wing relative to the fuselage.

[0005] In some embodiments, the driving mechanism includes a trigger, which is rotatably connected to the fixed seat through a first trigger rotating shaft and is rotatably connected to the link transmission mechanism for receiving an external force to drive the link transmission mechanism to rotate.

[0006] In some embodiments, the driving mechanism further includes a torsion member sleeved on the first trigger rotating shaft for applying an elastic force to the trigger.

[0007] In some embodiments, the first locking member and the second locking member are locked by being mutually engaged.

[0008] In some embodiments, the first locking member is provided with a first protrusion and a first groove, and the second locking member is correspondingly provided with a second protrusion and a second groove. The second protrusion is correspondingly arranged in the first groove, and the first protrusion is correspondingly arranged in the second groove.

[0009] In some embodiments, the first protrusion includes a first mating plane arranged along the direction in which the first locking member and the second locking member are engaged or separated, and includes a first helical surface extending along a helical direction; The second protrusion includes a second mating plane arranged along the direction in which the first locking member and the second locking member are engaged or separated, and includes a second helical surface extending along a helical direction; Wherein, the first mating plane and the second mating plane cooperate with each other, and the first helical surface and the second helical surface cooperate with each other.

[0010] In some embodiments, the first locking member and the second locking member are further used to lock the movable seat in a folded state relative to the fixed seat.

[0011] In some embodiments, the locking mechanism further includes a spring sleeved on the pull rod and abutted against the fixed seat and the second locking member at both ends respectively to apply an elastic force to the second locking member.

[0012] In some embodiments, the locking mechanism further includes a guide shaft installed on the movable seat and slidably arranged with the second locking member.

[0013] In some embodiments, the second locking mechanism includes two locking pins respectively defined as a first locking pin and a second locking pin. The first locking pin is connected to the adapter, and the second locking pin is connected to the pull rod, both of which are used to lock the movable seat in a folded state relative to the fixed seat.

[0014] In some embodiments, the second locking pin and the pull rod are integrally formed.

[0015] In some embodiments, the adapter includes a first connecting portion and a second connecting portion disposed at an angle. Two ends of the second connecting portion are respectively connected to the pull rod and the locking pin. The first connecting portion is rotatably disposed with the link transmission mechanism and is connected to an end of the second connecting portion away from the first locking member.

[0016] According to another aspect of the present invention, there is provided a drone, including the wing folding device described above, a fuselage, and a connection to the fixed seat; and a folding wing, connected to the movable seat.

[0017] In summary, the wing folding device and the drone provided by the present invention have the following technical effects: When it is necessary to deploy the folding wing, that is, when the movable seat needs to be adjusted from the deployed state to the folded state relative to the fixed seat, under the drive of the drive mechanism, the first locking member and the second locking member are unlocked. After the movable seat rotates in place relative to the fixed seat, the locking pin locks the movable seat to the fixed seat. In this way, it is realized that the folding wing can be kept stable when in the deployed state for flight; when it is necessary to fold the folding wing, under the drive of the drive mechanism, the locking pin is driven by the link transmission mechanism to unlock the movable seat. At this time, the movable seat can be rotated to realize the deployment of the movable seat and the fixed seat, thereby realizing the folding of the folding wing relative to the fixed wing. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic structural view of a perspective of the movable seat relative to the fixed seat in the wing folding device according to an embodiment of the present invention in the deployed state; Figure 2 For Figure 1 It is a schematic structural view of another perspective of the movable seat relative to the fixed seat in the wing folding device in the deployed state; Figure 3 For Figure 1 It is a schematic structural view of the movable seat relative to the fixed seat in the wing folding device in the intermediate state; Figure 4 For Figure 1 It is a schematic structural view of the movable seat relative to the fixed seat in the wing folding device when in the folded state and the buckle is not reset; Figure 5 For Figure 1 It is a schematic structural view of the movable seat relative to the fixed seat in the wing folding device when in the folded state and the buckle is reset; Figure 6 For Figure 1 It is a schematic structural view of the first locking mechanism; Figure 7 For Figure 1Schematic structural diagram of a usage state of the first locking mechanism and the second locking mechanism therein; Figure 8 is Figure 1 Schematic structural diagram of another usage state of the first locking mechanism and the second locking mechanism therein.

[0019] Accompanying drawings: 100 - wing folding device, 10 - fixed seat, 11 - second rotating ear, 12 - first rotating shaft, 13 - avoidance groove, 14 - second plate body, 15 - second locking ear, 20 - movable seat, 22 - first rotating ear, 23 - first locking hole, 24 - second locking hole, 25 - first plate body, 26 - first locking ear, 27 - mounting ear, 30 - driving mechanism, 31 - trigger, 32 - torsion member, 33 - first trigger rotating shaft, 34 - second trigger rotating shaft, 40 - second locking mechanism, 41 - adapter, 411 - first connecting portion, 412 - second connecting portion, 42 - pull rod, 44 - locking pin, 441 - first locking pin, 442 - second locking pin, 45 - spring, 50 - link transmission mechanism, 51 - link rotating shaft, 60 - first locking mechanism, 61 - first locking member, 611 - first protrusion, 6111 - first mating plane, 6112 - first helical surface, 612 - first groove, 62 - second locking member, 621 - second protrusion, 6211 - second mating plane, 6212 - second helical surface, 622 - second groove, 63 - guide shaft. Detailed implementation manners

[0020] For better understanding and implementation, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention.

[0021] In the description of the present invention, it should be noted that the orientation or positional relationships indicated by the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. are based on the orientation or positional relationships shown in the accompanying drawings. They are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as a limitation to the present invention.

[0022] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by those skilled in the technical field to which the present invention belongs. The terms used in the description of the present invention herein are only for the purpose of describing specific embodiments and are not intended to limit the present invention.

[0023] The present invention will be further described in detail below with reference to the accompanying drawings.

[0024] Please refer to Figures 1 to 8, the wing folding device 100 provided by the first embodiment of the present invention includes a fixed seat 10, a movable seat 20, a driving mechanism 30, a first locking mechanism 60, a second locking mechanism 40, and a link transmission mechanism 50.

[0025] Among them, please refer to Figures 1 to 5 , the fixed seat 10 is used to connect to the fuselage; the movable seat 20 is used to connect to the folding wing and is rotatably arranged with the fixed seat 10; the driving mechanism 30 is connected to the fixed seat 10 and is used to apply a driving force; the first locking mechanism 60 is at least used to lock the movable seat 20 relative to the fixed seat 10 in the unfolded state, and includes a first locking member 61 and a second locking member 62 that can lock or separate from each other. The first locking member 61 is connected to the movable seat 20, and the second locking member 62 is connected to the fixed seat 10; the second locking mechanism 40 is connected to the fixed seat 10 and includes an adapter 41, a pull rod 42, and a locking pin 44. The adapter 41, the pull rod 42, and the first locking member 61 are connected in sequence, and the locking pin 44 is connected to the adapter 41 and is used to lock the movable seat 20 in the folded state; the link transmission mechanism 50 is rotatably connected between the driving mechanism 30 and the adapter 41 and is used to drive the second locking mechanism 40 to move under the drive of the driving mechanism 30; among them, under the drive of the driving mechanism 30, the first locking member 61 and the second locking member 62 are unlocked, so that the movable seat 20 can rotate with the fixed seat 10, thereby realizing the unfolding or folding of the movable seat 20 relative to the fixed seat 10, so as to realize the folding or unfolding of the folding wing relative to the fixed wing.

[0026] For the above wing folding device 100, when the folding wing needs to be unfolded, that is, when the movable seat 20 needs to be adjusted from the unfolded state to the folded state relative to the fixed seat 10, under the drive of the driving mechanism 30, the first locking member 61 and the second locking member 62 are unlocked. After the movable seat 20 rotates in place relative to the fixed seat 10, the locking pin 44 locks the movable seat 20 to the fixed seat 10. In this way, the folding wing can be kept stable when in the unfolded state for flight; when the folding wing needs to be folded, under the drive of the driving mechanism 30, the locking pin 44 is driven by the link transmission mechanism 50 to unlock the movable seat 20. At this time, the movable seat 20 can be rotated to realize the unfolding of the movable seat 20 and the fixed seat 10, thereby realizing the folding of the folding wing relative to the fixed wing.

[0027] It should be noted that when the movable seat 20 drives the folding wing to be in the unfolded state relative to the fuselage on the fixed seat 10, the folding wing and the fuselage are approximately at an angle of 180 degrees; when the folding of the folding wing relative to the fuselage is completed, the folding wing is folded above the fuselage to facilitate the storage or storage of the entire unmanned aerial vehicle.

[0028] Furthermore, corresponding to the two states of the folding wing, the movable seat 20 has two states relative to the fixed seat 10. When it is flipped to the folding state parallel to the fixed seat 10, the folding wing is in the unfolded state at this time; when it is flipped to the unfolded state on the same plane as the fixed seat 10, the folding wing is driven to flip above the fuselage at this time, and the folding wing is in the folded state.

[0029] Specifically, please refer to Figures 1 to 5 , when implementing the rotational setting of the movable seat 20 and the fixed seat 10, a first rotating ear 22 is provided on the movable seat 20, a second rotating ear 11 is provided on the fixed seat 10, a first rotating shaft 12 is provided on the second rotating ear 11, and the first rotating ear 22 and the first rotating shaft 12 are rotationally arranged, thereby realizing the rotational folding and rotational unfolding of the movable seat 20 relative to the fixed seat 10.

[0030] It can be understood that in order to ensure the stability of rotation, a first rotating ear 22 is clamped between every two second rotating ears 11, so that the first rotating shaft 12 is connected between the two second rotating ears 11 to ensure the stability of rotation.

[0031] Furthermore, in order to ensure the stability of rotational folding and rotational unfolding, when setting the first rotating ear 22 and the second rotating ear 11, the first rotating ear 22 and the second rotating ear 11 are provided in pairs, that is, on both sides of the first locking member 61 and the second locking member 62, there are both the first rotating ear 22 and the second rotating ear 11. When the movable seat 20 rotates relative to the fixed seat 10, it forms a way of rotating with two support points to ensure the stability of rotation.

[0032] Please refer to Figures 1 to 3 and Figure 7 and Figure 8 , which is a schematic structural diagram of the driving mechanism 30 of the embodiment of the present invention. When the driving mechanism 30 of this embodiment realizes the rotation of the link transmission mechanism 50, the driving mechanism 30 includes a trigger 31. The trigger 31 is rotatably connected to the fixed seat 10 through a first trigger rotating shaft 33 and is rotatably connected to the link transmission mechanism 50, and is used to receive an external force to drive the link transmission mechanism 50 to rotate. The rotation of the link transmission mechanism 50 drives the movement of the second locking mechanism 40. Thus, by setting the trigger 31 to receive the driving force, the link transmission mechanism 50 can be driven to rotate by an external force, reducing the installation cost of the entire driving mechanism 30; in other embodiments, the driving mechanism 30 can also be set as a driving electric cylinder. By the telescopic movement of the piston shaft of the driving electric cylinder, the rotation of the link transmission mechanism 50 is realized; in other embodiments, the driving mechanism 30 can also be set as a motor drive method. Through the rotation of the motor, the output shaft of the motor drives the rotation of the link transmission mechanism 50, thereby realizing the movement of driving the second locking member 62 and the locking pin 44.

[0033] Further, after applying an external force to rotate the trigger 31, unlocking between the first locking member 61 and the second locking member 62 is achieved, as Figure 8 shown, so as to enable the adjustment of the movable seat 20 and the fixed seat 10 from the unfolded state to the folded state. Since the trigger 31 also needs to drive the locking pin 44 to move to achieve the locking between the folded movable seat 20 and the fixed seat 10, therefore, in order to facilitate the locking movement of the pin shaft 44, the driving mechanism 30 further includes a torsion member 32. The torsion member 32 is sleeved on the first trigger rotation shaft 33 and is used to apply an elastic force to the trigger 31. For example, the torsion member 32 is set as a torsion spring or a coil spring. After driving the trigger 31 to rotate to unlock the second locking member 62 and the first locking member 6, the torsion member 32 deforms to generate an elastic force. When the movable seat 20 rotates and folds relative to the fixed seat 10, under the elastic force of the torsion member 32, the driving pin 44 is driven to move towards the movable seat 20, so as to insert into the movable seat 20, realizing the locking of the folded movable seat 20, that is, the locking corresponding to the unfolded state of the folding wing at this time, so that the drone can be in a stable state during flight.

[0034] Please refer to Figures 1 to 5 and 7 and Figure 8 , when the trigger 31 in this embodiment rotates relative to the link transmission mechanism 50, the two rotate through the second trigger rotation shaft 34 to achieve this.

[0035] Specifically, since the rotation of the trigger 31 relative to the first trigger rotation shaft 33 needs to drive the rotation of the link transmission mechanism 50, therefore, the fixed seat 10 is provided with an avoidance groove 13 for the rotation of the link transmission mechanism 50. This avoidance groove 13 not only avoids the rotation of the link transmission mechanism 50 but also avoids the movement of the trigger 31, that is, the trigger 31 is rotatably arranged in the avoidance groove 31.

[0036] Please refer to Figure 1 , Figure 2 and Figure 5 , when the first locking mechanism 60 of this embodiment locks the movable seat 20 and the fixed seat 10, the first locking member 61 and the second locking member 62 not only lock the movable seat 20 and the fixed seat 10 in the unfolded state, but also the first locking member 61 and the second locking member 62 are used to achieve the locking of the movable seat 20 relative to the fixed seat 10 in the folded state. That is, when the movable seat 20 and the fixed seat 10 are in the folded state, they are not only locked by the locking pin 44, but the first locking member 61 and the second locking member 62 also cooperate to achieve locking. Since the folded state of the movable seat 20 corresponds to the unfolded state of the folding wing, the multi-point locking method for the folded movable seat 20 enables the folded movable seat 20 to drive the folding wing to be in a stable locked state. In this way, stable flight can be carried out to avoid being affected by air resistance.

[0037] Specifically, please refer to Figures 6 to 8 . When the first locking member 61 and the second locking member 62 of this embodiment are in locking cooperation, the first locking member 61 and the second locking member 62 achieve locking by means of mutual engagement. That is, when the first locking member 61 and the second locking member 62 are in locking cooperation, along the axial direction of the parallel pull rod 42, as Figure 7 shown by the arrow a in, they are nested with each other, and the two can no longer rotate relative to each other, thus realizing the locking of the movable seat 20. Locking or separating by means of engagement is convenient for the operation of the external force applied by the hand. In one embodiment, for example, a card slot is provided circumferentially on one locking member, and a card block is provided circumferentially on the other locking member, and the card block is embedded in the card slot to achieve the locking of the two. It can be understood that the central angles of both the card block and the card slot need to be less than 360° to prevent the movable seat 20 from rotating relative to the fixed seat 10 after folding.

[0038] Specifically, in this embodiment, when realizing the mutual engagement of the first locking member 61 and the second locking member 62, the first locking member 61 is provided with a first protrusion 611 and a first groove 612, and the second locking member 62 is correspondingly provided with a second protrusion 621 and a second groove 622. The second protrusion 621 is arranged corresponding to the first groove 612, and the first protrusion 611 is arranged corresponding to the second groove 622. Thus, the first protrusion 611 is embedded in the second groove 622, and the second protrusion 621 is embedded in the first groove 612 to achieve the engagement locking of the first locking member 61 and the second locking member 62. The two can only move relative to each other along an axis and cannot rotate circumferentially. By means of each having a protrusion and each having a groove, the stability of the cooperation after the two are engaged is improved, and the rotation of the movable seat 20 relative to the fixed seat 10 is prevented.

[0039] Among them, the first protrusion 611 includes a first mating plane 6111 arranged along the direction in which the first locking member 61 and the second locking member 62 are engaged or separated, and includes a first helical surface 6112 extending in the helical direction. Correspondingly, the second protrusion 621 includes a second mating plane 6211 arranged along the direction in which the first locking member 61 and the second locking member 62 are engaged or separated, and includes a second helical surface 6212 extending in the helical direction. The first mating plane 6111 and the second mating plane 6211 cooperate with each other, and the first helical surface 6112 and the second helical surface 6212 cooperate with each other. Through the cooperation of the first mating plane 6111 and the second mating plane 6211, when they are engaged with each other, they perform a fitting movement with each other to have a guiding effect and facilitate the engagement of the two; through the cooperation of the first helical surface 6112 and the second helical surface 6212, when the movable seat 20 is adjusted from the unfolded state to the folded state, due to the pulling of the trigger 31, the first locking member 61 and the second locking member 62 are separated. At this time, the first helical surface 6112 and the second helical surface 6212 are in contact with each other. As the movable seat 20 rotates, it gradually drives the rotation of the first locking member 61, and pushes the second locking member 62 provided with the second helical surface 6212 to move. The second locking member 62 is fixedly sleeved on the pull rod 42, which helps to push the locking pin 44 away from the movable seat 20, so as to prepare for the locking of the movable seat 20 in the folded state after rotation in place.

[0040] Please refer to Figure 1 , Figure 3 , Figure 7 and Figure 8 , in an embodiment of the present invention, in order to facilitate the locking between the first locking member 61 and the second locking member 62 when the folding wing is in the unfolded state, the first locking mechanism 60 further includes a spring 45. The spring 45 is sleeved on the pull rod 42, and the two ends are respectively in contact with the fixed seat 10 and the second locking member 62 to apply an elastic force to the second locking member 62. In this way, when the movable seat 20 rotates in place, under the push of the spring 45, the second locking member 62 is pushed into the first locking member 61, and manual locking is not required, thus facilitating the locking in the unfolded state.

[0041] It can be understood that as the trigger 31 is pulled, the rotation of the link transmission mechanism 50 drives the movement of the pull rod 42, and the pull rod 42 drives the second locking member 62 to compress the spring 45, so that the spring 45 can generate an elastic force.

[0042] Furthermore, the spring 45 cooperates with the torsion spring 32 to jointly realize the reset of the trigger 31, the locking pin 44 and the second locking member 62.

[0043] Please refer to Figures 1 to 8, in an embodiment of the present invention, since the first locking member 61 is installed on the movable seat 20, the second locking member 62 is installed on the pull rod 42, and the second locking member 62 has a certain extension length. After separating the first locking member 61 and the second locking member 62, in order to prevent the second locking member 62 from being in a suspended state and deforming, which may affect the subsequent fitting accuracy, the first locking mechanism 60 further includes a guide shaft 63. The guide shaft 63 is installed on the movable seat 20 and is slidably arranged with the second locking member 62. Specifically, it is sequentially passed through the first locking member 61 and the second locking member 62 along the fitting or separating direction of the first locking member 61 and the second locking member 62, and is fixedly connected to the first locking member 61, and the second locking member 62 is rotatably arranged with the guide shaft 63. Thus, as the trigger 31 is pulled as shown by the arrow b in Figure 7 , driving the second locking member 62 away from the first locking member 61, as shown by the arrow a in Figure 7 , the second locking member 62 can move in a straight line under the limitation of the guide shaft 63, avoiding being in a suspended state and deforming, which may affect the subsequent fitting accuracy with the first locking member 61.

[0044] Among them, the guide shaft 63 and the movable seat 20 are installed by bolts. The bolts pass through the movable seat 20 along the radial direction of the guide shaft 63 and enter the guide shaft 63 to stably lock the guide shaft 63 on the movable seat 20.

[0045] Please refer to Figures 1 to 4 . In order to ensure the locking stability of the movable seat 20 in the folded state relative to the fixed seat 10, that is, to ensure the locking stability of the folding wing in the unfolded state, the second locking mechanism 40 includes two locking pins 44. The two locking pins 44 are respectively defined as the first locking pin 441 and the second locking pin 442. The first locking pin 441 is connected to the adapter 41, and the second locking pin 442 is connected to the pull rod 42, both of which are used to lock the movable seat 20 relative to the fixed seat 10 in the folded state. Specifically, the second locking pin 442 is arranged at one end of the pull rod 42. The first locking hole 23 and the second locking hole 24 are separately arranged on the movable seat 20. The first locking hole 23 corresponds to the first locking pin 441, and the second locking hole 24 corresponds to the second locking pin 442. Thus, when the movable seat 20 is in the unfolded state, the first locking pin 441 is locked in the first locking hole 23, and the second locking pin 442 is locked in the second locking hole 24, locking the movable seat 20 at two positions to ensure the locking stability of the movable seat 20 and prevent it from shaking during flight.

[0046] Among them, the movable seat 20 includes a first plate body 25, and two first rotating ears 22 and two first locking ears 26 provided on the first plate body 25. Further, in order to ensure the overall structural strength of the movable seat 20 and facilitate the forming of the entire movable seat 20, the first rotating ears 22 and the first locking ears 26 are integrally provided, having a common extension plane perpendicular to the surface of the first plate body 25. Understandably, the movable seat 20 further includes a pair of mounting ears 27 provided between the two first rotating ears 22, and the mounting ears 27 are used for mounting the guide shaft 63.

[0047] Among them, the fixed seat 10 includes a second plate body 14, two pairs of second rotating ears 11 provided on the second plate body 14, and two pairs of second locking ears 15. One second rotating ear 11 is arranged corresponding to one second locking ear 15 and is integrally formed, so as to ensure the structural strength of the fixed seat 10 and facilitate the forming of the fixed seat 10. Among them, a first locking ear 26 is clamped between each pair of second locking ears 15.

[0048] Further, in order to ensure the locking strength of the movable seat 20, the first locking pin 441 and the second locking pin 442 need to be made of steel materials. At the same time, in order to reduce costs and the weight of the entire wing folding device 100, the pull rod 42 can be made of aluminum material. Aluminum has the characteristics of relatively low price and relatively light weight. Therefore, the second locking pin 442 and the pull rod 42 of this embodiment are formed separately, so that the two can use different materials, and then they can be installed as a whole later, for example, assembled into a whole by welding.

[0049] Among them, please refer to Figures 1 to 5 When the first locking pin 441 and the pull rod 42 of this embodiment are arranged in parallel, the adapter 41 includes a first connecting portion 411 and a second connecting portion 412 arranged at an angle. The two ends of the second connecting portion 412 are respectively connected to the pull rod 42 and the locking pin 44, specifically connected to the second locking pin 442. The first connecting portion 411 and the link transmission mechanism 50 are rotatably arranged and connected to one end of the second connecting portion 412 away from the first locking member 61. Specifically, the first connecting portion 411 and the second connecting portion 412 are arranged at an angle of 90 degrees. By arranging the first connecting portion 411 connected to the link transmission mechanism 50 at one end of the second connecting portion 412 away from the first locking member 61, compared with the way of arranging the first connecting portion 411 connected to the link transmission mechanism 50 at one end of the second connecting portion 412 close to the first locking member 61, the space inside the fixed seat 10 can be fully utilized, and the height of this position of the fixed seat 10 for installing the mounting buckle 31 can be reduced, thereby reducing the weight of the entire folding wing folding device 100.

[0050] The process of the folding wing of this embodiment unfolding and folding relative to the fuselage is as follows: When the folding wing is in the folded state, as Figure 1 、 Figure 2and Figure 7 As shown, at this time, the movable seat 20 is flipped above the fixed seat 10, and the movable seat 20 is in an unfolded state relative to the fixed seat 10, and the included angle between the two is approximately 180°. One hand pulls the buckle 31 in a direction away from the movable seat 20, and the buckle 31 rotates around the first buckle 31 axis, as shown by the arrow a in Figure 7 . At the same time, it drives the link transmission mechanism 50 to move in the direction of the first buckle 31 axis, and adjusts to the intermediate state as shown in Figure 3 and 8 . Driven by the link transmission mechanism 50, it drives the pull rod 42 and the first locking pin 441 to move in the direction of the buckle 31, as shown by the arrow c in Figure 7 . At this time, the pull rod 42 drives the second locking member 62 and the first locking member 61 to be unlocked, and at the same time, it also drives the first locking pin 441 and the second locking pin 442 to disengage from a second locking ear 15 on the right side. The other hand rotates the movable seat 20, and the second helical surface 6212 abuts against the first helical surface 6112, as shown in Figure 6 . As the movable seat 20 gradually rotates, the first locking member 61 pushes the second locking member 62 to move, and at the same time drives the two locking pins 44 away from the space between the corresponding two second locking members 62 respectively. When the movable seat 20 rotates to be juxtaposed with the fixed seat 10, at this time, the buckle 31 is in the intermediate state as shown in Figure 4 and Figure 7 . At the same time, the first locking ear 26 enters between the two second locking ears 15. Under the combined elastic force of the torsion member 32 and the spring 45, the first locking pin 441 and the second locking pin 442 are successively pushed into the first locking hole 23 or the second locking hole 24 of the corresponding first locking ear 26, and the second locking member 62 is pushed towards the first locking member 61, so that the second locking member 62 and the first locking member 61 are engaged and locked.

[0051] The above-mentioned folding wing folding device 100, by setting the driving mechanism 30 as a trigger 31, applying an external force by hand to drive the unlocking between the first locking member 61 and the second locking member 62, compared with the way of using an electrically driven driving mechanism, can achieve the effect of cost savings; by setting a torsion spring and a spring 45, when the movable seat 20 needs to be locked relative to the fixed seat 10 in the folded state, the torsion spring and the spring 45 apply an elastic force, so that locking can be quickly achieved, facilitating the operation of the user; by locking the first locking member 61 and the second locking member 62 in an embedded manner, it is convenient to apply an external force by hand to achieve locking; by setting spiral surfaces on the first locking member 61 and the second locking member 62 respectively, when the movable seat 20 is adjusted from the unfolded state to the folded state relative to the fixed seat 10, due to the cooperation of the spiral surfaces, the movable seat 20 pushes the fixed seat 10 to move linearly, so as to push the locking pin 44 away from the space between the two second locking ears 15 to make way for the entry of the first locking ear 26; by setting a guide shaft 63 on the movable seat 20 for the second locking member 62 to slide, it is avoided that the second locking member 62 is in a suspended state and deformed, affecting the subsequent fitting accuracy; by setting the first locking pin 441 and the second locking pin 442 to jointly lock the movable seat 20, the stability of the movable seat 20 relative to the fixed seat 10 in the locked state is ensured, thereby ensuring the stability during subsequent flight. At the same time, due to the locking of the movable seat 20 by the locking pin 44, the first locking member 61 and the second locking member 62 also cooperate to lock, and the movable seat 20 is locked at two positions, further ensuring the flight stability when the movable seat 20 drives the folding wing to be in the unfolded state.

[0052] In the second embodiment of the present invention, a drone is further provided, including the above-mentioned folding wing folding device 100, wherein the movable seat 20 is connected to the folding wing, and the fixed seat 10 is connected to the fuselage. By the rotation of the movable seat 20 relative to the fixed seat 10, the folding or unfolding of the folding wing relative to the fuselage is realized.

[0053] It should be noted that when the movable seat 20 drives the folding wing to be in the unfolded state relative to the fuselage on the fixed seat 10, the folding wing and the fuselage are approximately at an angle of 180 degrees; when the folding of the folding wing relative to the fuselage is completed, the folding wing is folded above the fuselage to facilitate the storage or storage of the entire drone.

[0054] Furthermore, corresponding to the two states of the folding wing, the movable seat 20 has two states relative to the fixed seat 10. It is flipped to the folded state parallel to the fixed seat 10, at this time the folding wing is in the unfolded state; it is flipped to the unfolded state on the same plane as the fixed seat 10, at this time it drives the folding wing to flip above the fuselage, and the folding wing is in the folded state.

[0055] The technical means disclosed in the solution of the present invention are not limited to the technical means disclosed in the above embodiments, but also include technical solutions composed of any combination of the above technical features. It should be noted that for those of ordinary skill in the art, without departing from the principle of the present invention, several improvements and refinements can be made, and these improvements and refinements are also regarded as the protection scope of the present invention.

Claims

1. Wing folding device, characterized in that, Comprising: A fixed seat for connecting to the fuselage; A movable seat for connecting to the folding wing and rotatably arranged with the fixed seat; A drive mechanism connected to the fixed seat for applying a driving force; A first locking mechanism at least for locking the movable seat relative to the fixed seat in the unfolded state, including a first locking member and a second locking member that can lock or separate from each other, the first locking member is connected to the movable seat, and the second locking member is connected to the fixed seat; A second locking mechanism connected to the fixed seat, including an adapter, a pull rod and a locking pin, the adapter, the pull rod and the first locking member are connected in sequence, and the locking pin is connected to the adapter for locking the movable seat in the folded state; A link transmission mechanism rotatably connected between the drive mechanism and the adapter for driving the second locking mechanism to move under the drive of the drive mechanism; Wherein, under the drive of the drive mechanism, the first locking member and the second locking member are unlocked so that the movable seat can rotate with the fixed seat, thereby realizing the unfolding or folding of the movable seat relative to the fixed seat, so as to realize the folding or unfolding of the folding wing relative to the fuselage.

2. The wing folding device according to claim 1, characterized in that The drive mechanism includes a trigger, the trigger is rotatably connected to the fixed seat through a first trigger rotating shaft and rotatably connected to the link transmission mechanism for receiving an external force to drive the link transmission mechanism to rotate.

3. The wing folding device according to claim 2, characterized in that, The drive mechanism further includes a torsion member sleeved on the first trigger rotating shaft for applying an elastic force to the trigger.

4. The wing folding device according to any one of claims 1 to 3, characterized in that, The first locking member and the second locking member are locked by means of mutual engagement.

5. The wing folding device according to claim 4, characterized in that, The first locking member is provided with a first protrusion and a first groove, and the second locking member is correspondingly provided with a second protrusion and a second groove, the second protrusion is correspondingly arranged in the first groove, and the first protrusion is correspondingly arranged in the second groove.

6. The wing folding device according to claim 5, characterized in that The first protrusion includes a first mating plane arranged along the direction in which the first locking member and the second locking member are engaged or separated, and includes a first helical surface extending along a helical direction; The second protrusion includes a second mating plane arranged along the direction in which the first locking member and the second locking member are engaged or separated, and includes a second helical surface extending along a helical direction; Wherein, the first mating plane and the second mating plane cooperate with each other, and the first helical surface and the second helical surface cooperate with each other.

7. The wing folding device according to any one of claims 1-3, characterized in that, The first locking member and the second locking member are also used for locking the movable seat relative to the fixed seat in the folded state.

8. The wing folding device according to claim 7, characterized in that, The locking mechanism further includes a spring sleeved on the pull rod, and the two ends respectively abut against the fixed seat and the second locking member to apply an elastic force to the second locking member.

9. The wing folding device according to claim 1 or 2, characterized in that, The locking mechanism further includes a guide shaft installed on the movable seat and slidably arranged with the second locking member.

10. The wing folding device according to claim 1 or 2, characterized in that, The second locking mechanism includes two locking pins, which are respectively defined as a first locking pin and a second locking pin. The first locking pin is connected to the adapter, and the second locking pin is connected to the pull rod, both of which are used to lock the movable seat relative to the fixed seat when in a folded state.

11. The wing folding device according to claim 10, characterized in that, The second locking pin and the pull rod are integrally formed.

12. The wing folding device according to any one of claims 1-3, characterized in that, The adapter includes a first connecting portion and a second connecting portion arranged at an angle. Two ends of the second connecting portion are respectively connected to the pull rod and the locking pin. The first connecting portion is rotatably arranged with the link transmission mechanism and is connected to one end of the second connecting portion away from the first locking member.

13. Drone, characterized in that, Comprising: The wing folding device according to any one of claims 1-12; A fuselage, connecting the fixed seat; A folding wing, connecting the movable seat.

Images