Dropping device and unmanned aerial vehicle equipped with same

Abstract

The utility model relates to the technical field of transportation equipment, and provides a throwing device and an unmanned aerial vehicle with the same. The throwing device comprises a supporting base, a hook rotationally connected to the supporting base and a movable block movably connected to the supporting base. The throwing device further comprises a memory alloy wire, the memory alloy wire is provided with a current end and a connecting end, the connecting end is connected with the movable block, one of the current end and the hook is used for connecting a power supply anode, and the other is used for connecting a power supply cathode; the memory alloy wire has a first state and a second state; in the first state, the movable block and the hook are locked, a current loop is defined by the movable block and the memory alloy wire, and the movable block is configured to respond to electric heating deformation of the memory alloy wire to be away from the hook; in the second state, the movable block and the hook are unlocked, and the current loop is interrupted. According to the throwing device, unnecessary stress generated by the memory alloy wire can be avoided as much as possible, and the service life is prolonged.

Description

Technical Field

[0001] The present application relates to the technical field of transportation equipment, and in particular to a delivery device and a drone equipped with the same. Background Art

[0002] At present, aerial transport equipment such as drones can be equipped with delivery devices, which can be used for delivery after they move to the target location, such as maritime rescue, disaster relief, logistics transportation, etc. The delivery device usually includes a hook and a driving mechanism that drives the hook to unlock and lock. The driving mechanism mostly uses a combination of motor drive and gear transmission, which results in a large weight of the delivery device itself. When it is carried on a drone, the drone carries a large load, and the drone can bear a small load of the delivery object.

[0003] In view of this, the related art uses the different elastic properties of the memory alloy wire when it is heated and cooled as a drive for the hook. This configuration omits the motor and gear transmission, greatly reduces the weight of the delivery device itself, facilitates the drone to carry more delivery objects, and reduces the failure rate of the drone. However, since the memory alloy wire is mostly heated electrically, it is prone to fatigue after long-term use, which affects its service life. Utility Model Content

[0004] Based on this, it is necessary to provide a delivery device that can avoid unnecessary stress on the memory alloy wire as much as possible and extend its service life.

[0005] A delivery device comprises a support base, a hook rotatably connected to the support base, and a movable block movably connected to the support base; the delivery device also comprises a memory alloy wire, the memory alloy wire has a current end and a connection end, the connection end is connected to the movable block, one of the current end and the hook is used to connect to the positive pole of a power supply, and the other is used to connect to the negative pole of a power supply; the memory alloy wire has a first state and a second state; in the first state, the movable block and the hook are locked, and define a current loop with the memory alloy wire, and the movable block is configured to move away from the hook in response to the electrothermal deformation of the memory alloy wire; in the second state, the movable block is unlocked from the hook, and the current loop is interrupted.

[0006] It can be understood that one of the hook and the shape memory alloy wire is connected to the positive electrode of the power supply, and the other is connected to the negative electrode of the power supply. Moreover, the connection end of the shape memory alloy wire is connected to the movable block, which is equivalent to one of the hook and the movable block being connected to the positive electrode of the power supply and the other being connected to the negative electrode of the power supply. Therefore, when the hook and the movable block are locked, it is equivalent to connecting the positive electrode and the negative electrode of the power supply, causing current to flow through the shape memory alloy wire for the electrothermal deformation of the shape memory alloy wire, and then driving the movable block to move relative to the support base, so that it moves in a direction away from the hook to unlock the hook. When the movable block is unlocked from the hook, the hook is released for the delivery of the dropped object; and at this time, the positive electrode and the negative electrode of the power supply are also disconnected, and the current does not pass through the shape memory alloy wire, realizing automatic power-off, thereby ensuring that the shape memory alloy wire does not need to always bear the current and be in a thermally deformed state, and prolonging the service life of the shape memory alloy wire.

[0007] In some embodiments, the hook is provided with a first rotating shaft and at least includes a limiting arm. The movable block has a disengaging side and a limiting side, which are arranged at intervals; in the first state, the movable block is located on the limiting side and abuts against the lower part of the limiting arm, and the movable block is configured to move towards the disengaging side in response to the electrothermal deformation of the shape memory alloy wire; in the second state, the movable block is located on the disengaging side and disengages from the limiting arm, and the hook can rotate downward around the first rotating shaft.

[0008] In some embodiments, a first inclined surface is provided at one end of the movable block facing the limiting side, and a second inclined surface is provided on the limiting arm; the hook can rotate upward around the first rotating shaft, and the second inclined surface presses against the first inclined surface to make the movable block move towards the disengaging side.

[0009] In some embodiments, the limiting side and the disengaging side are arranged opposite to each other along the axial direction of the first rotating shaft, and the movable block is slidably connected to the support base.

[0010] In some embodiments, a contact arm is provided on the disengaging side of the movable block, and the contact arm is arranged to avoid the rotation path of the hook; the delivery device further includes a driving rod, and the driving rod is movably connected to the support base and can abut against the contact arm to drive the movable block to disengage from the hook.

[0011] In some embodiments, a first resetting member is provided between the movable block and the support base, and the first resetting member is used to drive the movable block to move towards the limiting side; and / or, a second resetting member is provided between the hook and the support base, and the second resetting member is used to drive the hook to rotate downward or upward.

[0012] In some embodiments, the support base includes a pressure cover and an enclosure portion, the pressure cover is connected to one side of the enclosure portion and together with the enclosure portion encloses an assembly cavity, and a release notch connected to the assembly cavity is provided on the side of the enclosure portion away from the pressure cover; the hook and the movable block are both arranged in the assembly cavity, and part of the hook can be moved out of the assembly cavity through the release notch.

[0013] In some embodiments, the pressure cover is provided with a slide groove, and the movable block is slidably arranged in the slide groove; and / or the pressure cover is provided with a rotatable guide wheel at its corner, and the memory alloy wire is wound around the guide wheel.

[0014] In some embodiments, there are multiple hooks, which are arranged at intervals along the circumference of the support base. Each hook is correspondingly provided with a group of the movable blocks and the memory alloy wires. Each memory alloy wire is arranged in an L shape and a rotatable guide wheel is provided at the corner.

[0015] The present application also provides a drone, comprising a drone body and the above-mentioned delivery device, wherein the delivery device is detachably connected to the drone body. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the conventional technology, the drawings required for use in the embodiments or the conventional technology descriptions are briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0017] Figure 1 A bottom view of a delivery device provided in one embodiment of the present application;

[0018] Figure 2 A partial side view of a delivery device provided in one embodiment of the present application;

[0019] Figure 3 A schematic diagram of a delivery device provided in one embodiment of the present application.

[0020] Figure numerals: 10, support base; 11, enclosure; 12, pressure cover; 20, hook; 21, suspension arm; 22, limit arm; 30, movable block; 40, memory alloy wire; 41, connection end; 42, current end; 43, guide wheel; 51, first reset member; 52, second reset member; 60, drive rod; 70, adapter; 71, clamping block; 101, assembly cavity; 102, release notch; 201, first rotating shaft; 301, disengagement side; 302, limit side. DETAILED DESCRIPTION

[0021] To make the above objects, features, and advantages of the present application more apparent and understandable, the following provides a detailed description of the specific embodiments of the present application with reference to the accompanying drawings. Many specific details are set forth in the following description to facilitate a full understanding of the present application. However, the present application can be implemented in many other ways different from those described herein, and those skilled in the art can make similar improvements without departing from the connotation of the present application. Therefore, the present application is not limited by the specific embodiments disclosed below.

[0022] It should be noted that when a component is referred to as being "fixed to" or "disposed on" another component, it can be directly on the other component or there may also be an intermediate component. When a component is considered to be "connected" to another component, it can be directly connected to the other component or there may be an intermediate component at the same time. The terms "vertical", "horizontal", "upper", "lower", "left", "right", and similar expressions used in the specification of the present application are for illustrative purposes only and do not represent the only implementation.

[0023] In addition, the terms "first" and "second" are used for descriptive purposes only and cannot be construed as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include at least one of such features. In the description of the present application, the meaning of "a plurality of" is at least two, such as two, three, etc., unless otherwise specifically defined.

[0024] In the present application, unless otherwise clearly defined and limited, the first feature may be in direct contact with the second feature "on" or "under" the second feature, or the first feature and the second feature may be in indirect contact through an intermediate medium. Moreover, the first feature being "above", "over", and "on top of" the second feature may mean that the first feature is directly above or obliquely above the second feature, or only indicates that the first feature has a higher horizontal height than the second feature. The first feature being "below", "beneath", and "underneath" the second feature may mean that the first feature is directly below or obliquely below the second feature, or only indicates that the first feature has a lower horizontal height than the second feature.

[0025] Unless otherwise defined, all technical and scientific terms used in the specification of the present application have the same meaning as commonly understood by those skilled in the technical field to which the present application pertains. The terms used in the specification of the present application are only for the purpose of describing specific embodiments and are not intended to limit the present application. The term "and / or" used in the specification of the present application includes any and all combinations of one or more of the related listed items.

[0026] In the related art, the different elastic properties of the memory alloy wire when heated and cooled are used as a drive for the hook to realize the rotation of the hook and meet the automatic release of the object. The memory alloy wire is mostly heated electrically, that is, the memory alloy wire needs to be connected to the positive and negative poles of the power supply so that the current flows through the memory alloy wire. In order to ensure that the electrical heating path of the memory alloy wire is stable and reliable, it is usually connected directly to the positive and negative poles of the power supply. This makes it inconvenient to cut off the power to the memory alloy wire in time after the hook is released, causing the memory alloy wire to remain in a heated state. Over time, fatigue will occur, which will affect the service life of the memory alloy wire.

[0027] In view of this, an embodiment of the present application provides a delivery device, which can promptly cut off the power supply to the memory alloy wire after the hook is released, so as to avoid unnecessary force on the memory alloy wire as much as possible, thereby extending the service life. The delivery device is described in detail below.

[0028] See also Figures 1 to 3 Exemplarily, the delivery device includes a support base 10, a hook 20 and a movable block 30, wherein the hook 20 is rotatably connected to the support base 10, and the movable block 30 is movably connected to the support base 10 and is used to lock the hook 20. The movable block 30 can be driven to move relative to the support base 10 to unlock or lock the hook 20. When an object needs to be delivered, the movable block 30 is driven to move to unlock the hook 20, and the hook 20 can rotate downward under the gravity of the delivered object to meet the delivery; when the delivered object needs to be carried, the movable block 30 locks the hook 20 to ensure that the hook 20 is stable to carry the object.

[0029] The delivery device further includes a memory alloy wire 40, which has a current end 42 and a connection end 41, the connection end 41 is connected to the movable block 30, and one of the current end 42 and the hook 20 is used to connect the positive pole of the power supply, and the other is used to connect the negative pole of the power supply. When the positive pole and the negative pole of the power supply are connected through the memory alloy wire 40, the current flows through the memory alloy wire 40, causing it to produce thermal deformation. The movable block 30 is configured to move relative to the support base 10 in response to the electrothermal deformation of the memory alloy wire 40, so as to unlock the hook 20.

[0030] The memory alloy wire 40 has a first state and a second state. When the memory alloy wire 40 is in the first state, the movable block 30 and the hook 20 are locked, and together with the memory alloy wire 40, a current loop is defined, and the movable block 30 can move away from the hook 20 due to the electrothermal deformation of the memory alloy wire 40. When the memory alloy wire 40 is in the second state, the movable block 30 and the hook 20 are unlocked, and the current loop is interrupted.

[0031] It can be understood that one of the hook 20 and the shape memory alloy wire 40 is connected to the positive electrode of the power supply, and the other is connected to the negative electrode of the power supply. Since the connection end 41 of the shape memory alloy wire 40 is connected to the movable block 30, it is equivalent to that one of the hook 20 and the movable block 30 is connected to the positive electrode of the power supply, and the other is connected to the negative electrode of the power supply. Therefore, when the hook 20 and the movable block 30 are locked, it is equivalent to connecting the positive electrode and the negative electrode of the power supply. At this time, the hook 20, the movable block 30 and the shape memory alloy wire 40 are connected in series to form a current loop, so that the current flows through the shape memory alloy wire 40 for the electrothermal deformation of the shape memory alloy wire 40. When the shape memory alloy wire 40 undergoes thermal deformation under the action of the current, it can drive the movable block 30 to move relative to the support base 10 to move away from the hook 20 and unlock. When the movable block 30 moves to unlock with the hook 20, the hook 20 rotates downward under the gravity of the dropped object for the dropping of the dropped object; and, the positive electrode and the negative electrode of the power supply are also disconnected due to the unlocking of the movable block 30 and the hook 20, that is, the aforementioned current loop is interrupted, and the current cannot pass through the shape memory alloy wire 40, realizing automatic power-off.

[0032] That is to say, the dropping device provided in this embodiment uses the hook 20 and the movable block 30 as part of the current conduction. When it is locked, it is used for current conduction. When it is unlocked, the current loop is interrupted, that is, the current acting on the shape memory alloy wire 40 is cut off in time with the unlocking of the hook 20, ensuring that the shape memory alloy wire 40 does not need to always bear the current and be in a thermally deformed state, thereby extending the service life of the shape memory alloy wire 40. Moreover, with such a setting, there is no need to specifically set a structure for prompting the interruption of the current in the shape memory alloy wire 40, further reducing the load of the dropping device itself and simplifying the structure.

[0033] Among them, the positive electrode of the power supply can be connected to the hook 20, and the negative electrode of the power supply is connected to the current end 42 of the shape memory alloy wire 40. The current end 42 of the shape memory alloy wire 40 can be connected to a terminal block, which is conducive to wire connection. Of course, it can also be that the negative electrode of the power supply is connected to the hook 20, and the positive electrode of the power supply is connected to the current end 42 of the shape memory alloy wire 40.

[0034] Such as Figure 1 and Figure 2 As shown in the figure, in an alternative embodiment, the hook 20 is provided with a first rotating shaft 201 for rotatably connecting to the support base 10, and the hook 20 at least includes a limiting arm 22 for cooperating with the movable block 30. Of course, the hook 20 further includes a suspension arm 21 for carrying the dropped object. The suspension arm 21 is connected to the limiting arm 22 and is provided with a hooked-back portion. It can be understood that by providing the limiting arm 22 on the hook 20, it can be ensured that the cooperation between the movable block 30 and the hook 20 does not pass through the suspension arm 21, which not only ensures the stability of the cooperation between the two, but also reduces the load interference on the suspension arm 21.

[0035] The movable block 30 has a disengaging side 301 and a limiting side 302, which are arranged at intervals. In the first state, the movable block 30 is located at the limiting side 302 and abuts against the lower part of the limiting arm 22 to meet the locking cooperation with the hook 20. Therefore, the hook 20, together with the limiting arm 22 and the shape memory alloy wire 40, defines the aforementioned current loop for passing current through the shape memory alloy wire 40, and then the movable block 30 can move towards the disengaging side 301 under the action of the electrothermal deformation of the shape memory alloy wire 40. When the movable block 30 moves away from the limiting arm 22, the current loop is interrupted. At this time, the shape memory alloy wire 40 is in the second state, no current passes through it, the positive pole and the negative pole of the power supply are disconnected, the movable block 30 is located at the disengaging side 301, and the hook 20 rotates downward around the first rotating shaft 201 under the gravity of the dropped object for releasing the dropped object.

[0036] In actual use, the movable block 30 is slidably connected to the support base 10, and the disengaging side 301 and the limiting side 302 are arranged at intervals along the axial direction of the first rotating shaft 201. That is to say, the movable block 30 can move along the axial direction of the first rotating shaft 201 for unlocking and locking the hook 20. Since the hook 20 rotates up and down in the vertical direction, that is, pitches, and the movable block 30 slides in the horizontal direction, such a setting is equivalent to setting the moving direction of the movable block 30 perpendicular to the moving direction of the hook 20. In this way, the occupancy rate of the space below the hook 20 by the movable block 30 is reduced, and the occupancy rate of the space below the support base 10 is also reduced. Furthermore, the hook 20 can be set relatively low with respect to the support base 10, reducing the dropping height.

[0037] Alternatively, the movable block 30 can be rotatably connected to the support base 10. The movable block 30 rotates downward to disengage from the hook 20 and rotates upward to lock with the hook 20. It only needs to achieve the locking and unlocking between the movable block 30 and the hook 20.

[0038] Please refer to Figure 1 , for example, a first reset member 51 is provided between the movable block 30 and the support base 10, and the first reset member 51 is used to drive the movable block 30 to move towards the limiting side 302. Specifically, the support base 10 is provided with a chute for accommodating the movable block 30, the movable block 30 is slidably arranged in the chute, the first reset member 51 is arranged on the disengaging side 301 of the movable block 30 and abuts between the movable block 30 and the groove wall of the chute. The aforementioned shape memory alloy wire 40 is connected to the disengaging side 301 of the movable block 30.

[0039] When the shape memory alloy wire 40 has no electrothermal deformation, the movable block 30 is located at the limiting side 302 under the action of the first reset member 51, so as to abut against the lower part of the limiting arm 22, ensuring the stable locking of the hook 20. When the shape memory alloy wire 40 is energized and generates electrothermal deformation, the shape memory alloy wire 40 transforms from martensite to austenite and contracts to pull the movable block 30 to overcome the acting force of the first reset member 51 and slide towards the disengaging side 301. When the movable block 30 is completely disengaged from the limiting arm 22, the limitation of the hook 20 in the vertical direction is released, and the hook 20 rotates downward under the gravity of the dropped object to release the dropped object; and, the aforementioned current path is interrupted, the shape memory alloy wire 40 is powered off and cooled, the contraction pulling force on the movable block 30 is withdrawn, the movable block 30 can move towards the limiting side 302 under the action of the first reset member 51 to reset, and the shape memory alloy wire 40 also resets.

[0040] Wherein, the first reset member 51 can be a compression spring.

[0041] Further, a first inclined surface is provided at one end of the movable block 30 facing the limiting side 302, and a second inclined surface is provided on the limiting arm 22 of the hook 20. The hook 20 can rotate upward around the first rotating shaft 201 under the action of an external force, so as to press against the first inclined surface through the second inclined surface, and the movable block 30 is configured to move towards the disengaging side 301 in response to the pressing action. It can be understood that precisely because after the hook 20 rotates downward, the movable block 30 is reset by the first reset member 51. Therefore, when the hook 20 rotates upward, the movable block 30 is bound to be on the rotation path of the hook 20 and interfere with its rotation. Therefore, in this embodiment, by using the cooperation of the first inclined surface and the second inclined surface, the action of the upward rotation of the hook 20 can be decomposed into a force along the axial direction of the first rotating shaft 201 to push the movable block 30 to move a certain distance towards the disengaging side 301, so as to ensure that the hook 20 can rotate above the movable block 30 to meet the requirement of re-locking. For example, after dropping, the hook 20 can be manually pressed to reset.

[0042] As Figure 1 and Figure 2 shown, still further, a second reset member 52 is provided between the hook 20 and the support base 10. The second reset member 52 can drive the hook 20 to rotate upward after releasing the dropped object to restore the locked state with the movable block 30. Wherein, the second reset member 52 is a torsion spring, and the torsion spring can be sleeved on the first rotating shaft 201 and connected between the hook 20 and the support base 10.

[0043] In some specific embodiments, the positive electrode of the power supply can be connected to one end of the torsion spring, so as to transmit the current to the hook 20, and transmit the current to the movable block 30 via the limiting arm 22, and flow to the negative electrode of the power supply via the shape memory alloy wire 40 to form a current loop.

[0044] Alternatively, the second reset member 52 can also be used to apply a downward rotational force to the hook 20, which is beneficial for the hook 20 to release the dropped object.

[0045] Please refer to Figures 1 to 3 , in some of the embodiments, the support base 10 is provided with an assembly cavity 101 and a release notch 102 communicating with the assembly cavity 101. The hook 20 and the movable block 30 are both disposed in the assembly cavity 101. The release notch 102 is used for the suspension arm 21 of the hook 20 to move out, so as to satisfy the dropping of the dropped object. Therefore, the movable block 30 moves horizontally in the assembly cavity 101 to increase the space utilization rate of the assembly cavity 101, and further reduce the size of the assembly cavity 101 in the vertical direction.

[0046] In some specific embodiments, the support base 10 includes a gland 12 and a surrounding portion 11. The gland 12 is connected to one side of the surrounding portion 11 in the vertical direction to jointly enclose an assembly cavity 101 with an open bottom, which is beneficial for the assembly of structures such as the movable block 30, the shape memory wire, and the hook 20. Moreover, such a setting plays a role in limiting and protecting the settings of the hook 20 and the movable block 30 relative to the assembly cavity 101, and can reduce the interference of the hook 20 and the movable block 30 by the dropped object or other external factors. The release notch 102 is provided on the side of the surrounding portion 11 facing away from the gland 12, and the release notch 102 is in a U shape or an arc shape. When a limiting baffle is provided on the side of the surrounding portion 11 facing away from the gland 12 in the vertical direction, the release notch 102 can be in an L shape, including a vertical section and a horizontal section that communicate with each other, which can greatly reduce the rotational interference in the vertical and horizontal directions and ensure a large rotational range.

[0047] Among them, the gland 12 is provided with a chute for the sliding connection of the movable block 30. One end of the movable block 30 extending toward the detachment side 301 is provided with a guiding post. The chute is provided with a through hole for the guiding post to pass through at the position of the detachment side 301, which further improves the guiding effect. The first reset member 51 is a compression spring, which is sleeved outside the guiding post and abuts between the groove wall of the chute and the movable block 30.

[0048] Please continue to refer to Figures 1 to 3 , optionally, the dropping device further includes a driving rod 60, and the driving rod 60 is movably connected to the support base 10 and can abut against the movable block 30. The driving rod 60 is used to drive the movable block 30 to move toward the detachment side 301, so that the movable block 30 is detached from the hook 20 to achieve unlocking.

[0049] Specifically, the movable block 30 includes a limiting portion for cooperating with the hook 20 and an abutting arm for cooperating with the driving rod 60. The limiting portion is connected to the abutting arm, and the abutting arm is located above the limiting portion to avoid the rotation path of the hook 20. In this way, it can be ensured that the abutting cooperation between the driving rod 60 and the abutting arm will not interfere with the rotation of the hook 20.

[0050] That is to say, the delivery device provided in this embodiment can not only drive the movable block 30 to move by using the electrothermal deformation of the shape memory alloy wire 40, but also drive the movable block 30 to move by using the drive rod 60, realizing the combination of two driving methods. Among them, the drive rod 60 can be used for manual operation by the user. Especially when the delivery device needs to be maintained or repaired, the drive rod 60 can be used for manual operation to improve the maintenance safety. Of course, when the circuit of the shape memory alloy wire 40 fails, the drive rod 60 can also be used to drive the movable block 30 to move to realize the release of the delivery object.

[0051] Among them, the enclosure part 11 of the support base 10 is provided with a through hole for the drive rod 60 to pass through, and a part of the drive rod 60 protrudes through the through hole, which is conducive to operation. Of course, the end of the drive rod 60 can be located in the through hole to improve the operation safety and avoid accidental touch of the drive rod 60 as much as possible.

[0052] In actual use, the support base 10 is provided with a plurality of release notches 102, and a hook 20 is correspondingly arranged at each release notch 102. That is to say, there are a plurality of hooks 20 in this embodiment, which are arranged at intervals along the circumference of the support base 10, and each hook 20 is correspondingly provided with a set of movable block 30 and shape memory alloy wire 40. At the same time, each hook 20 can also correspond to a drive rod 60. By setting a plurality of hooks 20, the load-bearing reliability of the delivery device is increased; and each hook 20 is controlled separately and can also be used to hang different delivery objects.

[0053] Among them, the support base 10 is made of plastic material.

[0054] As Figure 1 shown, in some specific embodiments, the projection of the support base 10 in the vertical direction is rectangular, for example, it can be square, and the height of the support base 10 is less than the length and width of the support base 10. The shape memory alloy wire 40 corresponding to each of the foregoing hooks 20 is arranged in an L shape adapted to the support base 10, and each of the release notches 102 is located in the middle of the four sides of the square to ensure balanced force. At this time, the shape memory alloy wire 40 is arranged in an L shape, and a guide wheel 43 is provided on its inner side, and the shape memory alloy wire 40 is wound around the outside of the guide wheel 43. The guide wheel 43 is rotatably connected to the gland 12 of the support base 10.

[0055] As Figure 3As shown, in some embodiments, the delivery device further includes an adapter base 70 connected to the support base 10, and the adapter base 70 is used to connect to a drone. The adapter base 70 is provided on the upper surface of the support base 10 in the vertical direction. The adapter base 70 is provided with a plurality of clamping blocks 71 arranged at intervals along its circumference for clamping cooperation with the drone. Among them, an assembly hole is provided on one side of the seat body facing away from the limit baffle, and the adapter base 70 can be flange-connected to the edge of the assembly hole.

[0056] Another embodiment of the present application provides a drone, which includes a drone body and the aforementioned delivery device. The delivery device is detachably connected to the drone body through the adapter base 70 for throwing objects. Among them, when the adapter base 70 is provided with a plurality of clamping blocks 71, the drone body is provided with a receiving cavity for receiving the adapter base 70, and a plurality of clamping grooves are recessed radially outward on the cavity wall of the receiving cavity. Each clamping block 71 corresponds to a clamping groove to meet the assembly of the delivery device and the drone body. Among them, the clamping block 71 is provided with an inclined surface to facilitate the rotational assembly and limitation of the adapter base 70 relative to the drone body. Due to the detachable connection between the delivery device and the drone body, it is beneficial for both parties to be repaired and replaced.

[0057] The technical features of the above-described embodiments can be combined arbitrarily. For the sake of brevity of description, not all possible combinations of the various technical features in the above-described embodiments are described. However, as long as there is no contradiction in the combination of these technical features, it should be considered as the scope described in this specification.

[0058] The above-described embodiments only represent several implementation manners of the present application. The description is relatively specific and detailed, but it should not be construed as a limitation on the scope of the patent application. It should be noted that for those of ordinary skill in the art, without departing from the concept of the present application, several deformations and improvements can still be made, and these all belong to the protection scope of the present application. Therefore, the patent protection scope of the present application should be subject to the appended claims.

Claims

1. A dispensing device, characterized in that, It includes a support base (10), a hook (20) rotatably connected to the support base (10), and a movable block (30) movably connected to the support base (10); The dispensing device further includes a shape memory alloy wire (40), the shape memory alloy wire (40) having a current end (42) and a connection end (41), the connection end (41) being connected to the movable block (30), and one of the current end (42) and the hook (20) being used to connect to the positive pole of the power supply and the other being used to connect to the negative pole of the power supply; The shape memory alloy wire (40) has a first state and a second state; In the first state, the movable block (30) and the hook (20) are locked, and a current loop is defined with the shape memory alloy wire (40), and the movable block (30) is configured to move away from the hook (20) in response to the electrothermal deformation of the shape memory alloy wire (40); in the second state, the movable block (30) is unlocked from the hook (20), and the current loop is interrupted.

2. The dispensing device according to claim 1, wherein The hook (20) is provided with a first rotating shaft (201) and at least includes a limiting arm (22), and the movable block (30) has a disengaging side (301) and a limiting side (302), which are arranged at intervals; In the first state, the movable block (30) is located on the limiting side (302) and abuts against the lower part of the limiting arm (22), and the movable block (30) is configured to move towards the disengaging side (301) in response to the electrothermal deformation of the shape memory alloy wire (40); In the second state, the movable block (30) is located on the disengaging side (301) and disengages from the limiting arm (22), and the hook (20) can rotate downward around the first rotating shaft (201).

3. The dispensing device according to claim 2, characterized in that, One end of the movable block (30) facing the limiting side (302) is provided with a first inclined surface, and the limiting arm (22) is provided with a second inclined surface; The hook (20) can rotate upward around the first rotating shaft (201), and the second inclined surface presses against the first inclined surface to make the movable block (30) move towards the disengaging side (301).

4. The dispensing device according to claim 3, wherein, The limiting side (302) and the disengaging side (301) are arranged opposite to each other along the axial direction of the first rotating shaft (201), and the movable block (30) is slidably connected to the support base (10).

5. The dispensing device according to claim 2, characterized in that, The movable block (30) is provided with a contact arm on the disengaging side (301), and the contact arm is arranged to avoid the rotation path of the hook (20); The dispensing device further includes a driving rod (60), the driving rod (60) is movably connected to the support base (10) and can abut against the contact arm to drive the movable block (30) to disengage from the hook (20).

6. The dispensing device according to claim 2, wherein A first reset member (51) is provided between the movable block (30) and the support base (10), and the first reset member (51) is used to drive the movable block (30) to move towards the limiting side (302); and / or, A second restoring member (52) is provided between the hook (20) and the supporting base (10), and the second restoring member (52) is used to drive the hook (20) to rotate downward or upward.

7. The dispensing device according to any one of claims 1 to 6, characterized in that, The support base (10) comprises a gland (12) and an enclosure (11); the gland (12) is connected to one side of the enclosure (11) and is formed together with the enclosure (11) to form an assembly cavity (101); a release notch (102) communicating with the assembly cavity (101) is provided on a side of the enclosure (11) facing away from the gland (12); The hook (20) and the movable block (30) are both arranged in the assembly cavity (101), and part of the hook (20) can be moved out of the assembly cavity (101) via the release notch (102).

8. The dispensing device according to claim 7, wherein, The gland (12) is provided with a slide groove, and the movable block (30) is slidably arranged in the slide groove; and / or, The pressure cover (12) is provided with a rotatable guide wheel (43) at its corner, and the memory alloy wire (40) is wound around the guide wheel (43).

9. The dispensing device according to any one of claims 1 to 6, characterized in that A plurality of hooks (20) are provided and are arranged at intervals along the circumference of the support base (10); each hook (20) is provided with a corresponding group of movable blocks (30) and memory alloy wires (40); each memory alloy wire (40) is arranged in an L shape and is provided with a rotatable guide wheel (43) at a corner.

10. A drone, characterized in that, The invention comprises a machine body and a delivery device according to any one of claims 1 to 9, wherein the delivery device is detachably connected to the machine body.

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