CN111572753A

CN111572753A - Antenna winding and unwinding devices and unmanned aerial vehicle

Info

Publication number: CN111572753A
Application number: CN202010450977.9A
Authority: CN
Inventors: 卢致辉; 卢光宋; 陈金颖; 肖洪敏; 黄晶
Original assignee: Zhejiang Kebite Technology Co ltd
Current assignee: Zhejiang Kebite Technology Co ltd
Priority date: 2020-05-25
Filing date: 2020-05-25
Publication date: 2020-08-25

Abstract

The invention belongs to the technical field of unmanned aerial vehicles, and particularly relates to an antenna winding and unwinding device and an unmanned aerial vehicle. The antenna winding and unwinding device comprises an installation frame, a swinging seat, a connecting shaft, a driving assembly and a transmission assembly, wherein an antenna is connected to the connecting shaft, and the driving assembly drives the swinging seat to rotate on the installation frame to drive the connecting shaft to rotate and drive the antenna to move between an unfolding position and a folding position; the transmission assembly comprises a fixed bevel gear fixedly connected to the swinging seat and a movable bevel gear fixedly connected to the connecting shaft and meshed with the fixed bevel gear, and the fixed bevel gear rotates along with the swinging seat to drive the movable bevel gear to rotate and drive the connecting shaft to rotate to drive the antenna to switch between an unfolding state and a folding state. The switching of antenna between expansion state and draw in the state and the switching of antenna between expansion position and draw in the position realize through same drive assembly drive, need not to set up different actuating mechanism drives, and antenna winding and unwinding devices overall structure is simple, and the volume is less, satisfies unmanned aerial vehicle's miniaturization and lightweight development demand.

Description

Antenna winding and unwinding devices and unmanned aerial vehicle

Technical Field

The invention belongs to the technical field of unmanned aerial vehicles, and particularly relates to an antenna winding and unwinding device and an unmanned aerial vehicle.

Background

The unmanned aerial vehicle is usually provided with an antenna device to ensure that the unmanned aerial vehicle transmits information through the antenna device. In recent years, with the continuous development of unmanned aerial vehicle technology, the flight capability and various functional characteristics of unmanned aerial vehicles are continuously improved and enhanced, correspondingly, the unmanned aerial vehicle communication system also provides higher requirements, the unmanned aerial vehicle communication system is increasingly large and complex, and in order to meet the requirements of mass information acquisition and transmission, the structure and the installation requirements of an external antenna system on the body of the unmanned aerial vehicle are also increasingly strict.

For a large-size antenna with a complex structure, the antenna needs to be stored in a storage cavity on the unmanned aerial vehicle in a fixed state, that is, the antenna can only be moved to a fixed position in a fixed state to realize storage, so that not only the change of the position of the antenna needs to be considered, but also the change of the state of the antenna needs to be considered when the antenna with the complex structure is stored. Among the prior art, generally through setting up multistage actuating mechanism and drive antenna transform position and state respectively and realize receiving and releasing, multistage actuating mechanism structure is complicated, the dismouting is loaded down with trivial details, and installation occupation space is big, can't satisfy unmanned aerial vehicle miniaturization, lightweight's development demand.

Disclosure of Invention

The embodiment of the invention aims to provide an antenna winding and unwinding device and an unmanned aerial vehicle, and aims to solve the technical problems that a multi-stage driving mechanism for winding and unwinding an antenna with a complex structure in the prior art is complex in structure and large in installation occupied space.

In order to achieve the purpose, the invention adopts the technical scheme that: an antenna retraction arrangement comprising:

a mounting frame;

the swinging seat is rotatably arranged on the mounting rack;

the connecting shaft is rotatably arranged on the swinging seat, and the first end of the connecting shaft is used for connecting an antenna;

the driving component is arranged on the mounting frame, the driving end of the driving component is connected with the swinging seat, and the driving component drives the swinging seat to rotate on the mounting frame and drives the connecting shaft to synchronously rotate, so that the antenna is driven to reciprocate between an unfolding position and a folding position;

the transmission assembly comprises a fixed bevel gear fixedly connected with the oscillating seat and a movable bevel gear fixedly connected with the second end of the connecting shaft and in meshed connection with the fixed bevel gear, the fixed bevel gear can rotate synchronously with the oscillating seat to drive the movable bevel gear to rotate and drive the connecting shaft to rotate relative to the oscillating seat, and therefore the antenna is driven to be switched between an unfolding state and a folding state.

Furthermore, the rotating shaft of the fixed bevel gear is parallel to the rotating shaft of the swinging seat, and the rotating shaft of the movable bevel gear is superposed with the transmission shaft of the connecting shaft.

Further, the mounting frame comprises a first side plate and a second side plate which are arranged oppositely, a mounting gap is formed between the first side plate and the second side plate at intervals, and the swinging seat is rotatably mounted in the mounting gap;

the swing seat is provided with an installation cavity penetrating through two opposite end parts of the swing seat, the connecting shaft is sleeved in the installation cavity and is rotatably connected with the cavity wall of the installation cavity, the first end of the connecting shaft extends to the outside of the installation gap, the second end of the connecting shaft extends out of the installation cavity and is located in the installation gap, the movable bevel gear is sleeved at the second end of the connecting shaft, and the fixed bevel gear is fixedly connected to the outer wall surface of the swing seat.

Further, the swing seat is just right the lateral wall rigid coupling of first curb plate has first switching axle, the swing seat is just right the lateral wall rigid coupling of second curb plate has the second switching axle, the axis of first switching axle with the axis coincidence of second switching axle, first switching axle is kept away from the tip of swing seat with first curb plate rotates to be connected, the second switching axle is kept away from the tip of swing seat with the second curb plate rotates to be connected, swing seat winds the axis of first switching axle the axis of second switching axle is rotatory, the axis of connecting axle is perpendicular first switching axle the axis of second switching axle, decide bevel gear cup joint in first switching axle the second is changeed epaxially.

Further, the driving assembly comprises a driving motor, a driving gear, a driven gear and a synchronous belt, the driving motor is fixedly installed in the installation gap, the driving gear is sleeved on an output shaft of the driving motor, the driven gear is sleeved on the first transfer shaft, the synchronous belt is wound between the driving gear and the driven gear, the driving motor rotates and drives the first transfer shaft to rotate through the driving gear, the synchronous belt and the driven gear, the first transfer shaft rotates and drives the swing seat to synchronously rotate together with the connecting shaft, and the fixed bevel gear is sleeved on the second transfer shaft.

Further, the drive assembly still includes spacing cylinder, spacing cylinder install in on the first curb plate, the driving gear rotate install in on the first curb plate and the interval sets up the side of the piston rod of spacing cylinder, the piston rod of spacing cylinder can be relative the driving gear concertina movement to make the free end of piston rod break away from or stop in the teeth of a cogwheel of driving gear.

Further, the mounting bracket still including press from both sides and locate between the first curb plate and the second curb plate and be located the diaphragm of swing seat below, the tip that the antenna was kept away from to the swing seat with first changeover axis/distance between the second changeover axis is less than diaphragm top surface with the interval distance between the swing seat bottom surface, driving motor install in the bottom surface of diaphragm.

Further, the mounting bracket is still including being used for the bottom plate that links to each other with the unmanned aerial vehicle fuselage, the bottom plate interval set up in the below of diaphragm, first curb plate with the second curb plate connect perpendicularly in the both sides portion that the bottom plate is relative.

Further, the mounting bracket still including being used for the adaptation seal cover installation gap's screen cover, the relative both ends of screen cover respectively with the relative both ends of bottom plate link to each other, the relative both sides portion of screen cover respectively with first curb plate with second curb plate sliding connection, the screen cover is just right the position department of swing seat has seted up the confession the through-hole that the first end adaptation of connecting axle stretches out, the end that swing seat is close to the antenna is radially turned over a book and is formed with the overlap joint and locate the annular boss at the drill way edge of through-hole, annular boss with the fold portion of screen cover links to each other and the adaptation closing cap the through-hole, when swing seat rotates annular boss can stretch or compress thereby fold portion avoids the screen cover hinders swing seat rotates.

One or more technical schemes in the antenna folding and unfolding device provided by the invention at least have one of the following technical effects: when the unmanned aerial vehicle is used, the antenna of the unmanned aerial vehicle is connected to the first end of the connecting shaft, when the using state and the position of the antenna need to be changed, the driving assembly is started, the driving assembly drives the swinging seat to rotate on the mounting frame, and the connecting shaft is driven to synchronously rotate during rotation, so that the antenna is driven to move from the unfolding position (folding position) to the folding position (unfolding position); and the driving component drives the swinging shaft to swing, and simultaneously, the swinging shaft drives the fixed bevel gear to synchronously rotate, the fixed bevel gear further drives the movable bevel gear fixedly connected to the connecting shaft to rotate, and the movable bevel gear drives the connecting shaft to rotate relative to the swinging shaft, so that the antenna is driven to rotate to an unfolding state or a folding state, namely, the antenna is driven to synchronously complete state switching in the position switching process in a cone transmission mode. Therefore, when the antenna is switched between the folded position and the unfolded position, the using state of the antenna can be synchronously changed, the antenna is ensured to move to the unfolded position in the unfolded state and move to the folded position in the folded state, and the normal use, storage and taking of the antenna are ensured; and, the switching of antenna self state and the switching of antenna position realize through same drive assembly drive, need not to set up extra actuating mechanism and drive, compare its driver part of multistage drive and can reduce, antenna winding and unwinding devices's overall structure is simple, and the whole volume of device is less, satisfies unmanned aerial vehicle's miniaturization and lightweight preparation demand.

The other technical scheme of the invention is as follows: the utility model provides an unmanned aerial vehicle, includes fuselage, antenna and foretell antenna winding and unwinding devices, antenna winding and unwinding devices install in on the fuselage, the antenna connect in antenna winding and unwinding devices's the first end of connecting axle, set up the adaptation on the fuselage and accept the accepting groove of antenna, antenna winding and unwinding devices can drive the antenna remove to accept in the accepting groove.

According to the unmanned aerial vehicle, the antenna is installed on the body of the unmanned aerial vehicle through the antenna retracting device, when the antenna is folded into the accommodating groove or moved out of the accommodating groove and moved to the unfolding position, the using state of the antenna can be synchronously changed, the antenna is ensured to move to the unfolding position in the unfolding state and move to be accommodated in the accommodating groove in the folding state, and therefore the normal use of the antenna is ensured; and, the switching of antenna self state and the switching of antenna position realize through same drive assembly drive, need not to set up extra actuating mechanism and drive, compare its driver part of multistage drive and can reduce, agree with unmanned aerial vehicle's miniaturization and lightweight's development demand more.

Drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed to be used in the embodiments or the prior art descriptions will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without inventive exercise.

Fig. 1 is a schematic structural diagram of an antenna retracting device according to an embodiment of the present invention;

FIG. 2 is a schematic view of the antenna retraction device shown in FIG. 1 assembled with an antenna;

FIG. 3 is an exploded view of the antenna retraction device shown in FIG. 1;

fig. 4 is a partial structural schematic view of the antenna retracting device shown in fig. 1;

FIG. 5 is a schematic view of the antenna retraction device shown in FIG. 1 assembled with an antenna and with the antenna in a stowed position;

FIG. 6 is a schematic view of the antenna retraction device shown in FIG. 1 assembled with an antenna and with the antenna in an extended position;

FIG. 7 is a schematic diagram of the antenna retraction device shown in FIG. 1 assembled with an antenna and moving the antenna from a stowed position to a deployed position;

FIG. 8 is a cross-sectional view of the antenna retraction device shown in FIG. 1;

fig. 9 is a second sectional view of the antenna housing device shown in fig. 1.

Wherein, in the figures, the respective reference numerals:

10-mounting rack 11-first side plate 12-second side plate

13-mounting gap 14-transverse plate 15-bottom plate

16-screen cover 20-swing seat 21-installation cavity

22-first transfer shaft 23-second transfer shaft 24-annular boss

30-connecting shaft 40-driving assembly 41-driving motor

42-driving gear 43-driven gear 44-synchronous belt

45-limiting cylinder 50-transmission assembly 51-fixed bevel gear

52-moving bevel gear 100-antenna winding and unwinding device 111-first connecting hole

112-cover plate 161-through hole 200-antenna

201 main shaft 202 first wing 203 second wing

451-piston rod.

Detailed Description

In order to make the technical problems, technical solutions and advantageous effects to be solved by the present invention more clearly understood, the present invention is further described in detail below with reference to fig. 1 to 9 and the embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.

It will be understood that when an element is referred to as being "secured to" or "disposed on" another element, it can be directly on the other element or be indirectly on the other element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or be indirectly connected to the other element.

It will be understood that the terms "length," "width," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like, as used herein, refer to an orientation or positional relationship indicated in the drawings, which is solely for the purpose of facilitating the description and simplifying the description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and is therefore not to be construed as limiting the invention.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless specifically defined otherwise.

As shown in fig. 1 to 9, an embodiment of the present invention provides an antenna retracting device 100, which is used for being mounted on a body of an unmanned aerial vehicle to connect with an antenna 200 of the unmanned aerial vehicle, and is particularly suitable for a large-sized antenna 200 with a complicated connection structure. Specifically, in this embodiment, when antenna 200 connects in the unmanned aerial vehicle fuselage, it has the position of drawing in and expand to become the expansion position that sets up the angle with the fuselage in certain of accomodating to the unmanned aerial vehicle fuselage, and when antenna 200 was located the expansion position, its self state correspondence was in the expansion state and is used for transmission signal, and when antenna 200 was located the position of drawing in, its self state correspondence was switched to and is in the state of drawing in and ensures to all accommodate to the unmanned aerial vehicle fuselage. As shown in fig. 2, there is shown an antenna 200 adapted to be connected by using the antenna retracting device 100 of the present embodiment, the antenna 200 includes a main shaft 201 and a first wing 202 and a second wing 203 connected to opposite sides of the main shaft 201, when the antenna 200 is in an unfolded state, a connecting line of the first wing 202 and the second wing 203 is located in a first direction, and when the antenna 200 is in a folded state, a connecting line of the first wing 202 and the second wing 203 is located in a second direction, the first direction is perpendicular to the second direction; that is, when the antenna 200 is switched from the unfolded position to the folded position, the antenna 200 itself needs to rotate 90 ° to ensure that the antenna 200 is switched from the unfolded state to the folded state, and conversely, when the antenna 200 is switched from the folded position to the unfolded position, the antenna 200 itself needs to rotate 90 ° in the reverse direction to ensure that the antenna 200 is switched to the unfolded state to normally transmit information.

Further, in the present embodiment, as shown in fig. 1 to 3, the antenna winding and unwinding device 100 includes a mounting frame 10, a swing seat 20, a connecting shaft 30, a driving assembly 40, and a transmission assembly 50. The mounting rack 10 is used for being connected with the body of the unmanned aerial vehicle, for example, the mounting rack 10 can be directly screwed on the body of the unmanned aerial vehicle through screws or bolts; swing seat 20 rotates and installs on mounting bracket 10, and connecting axle 30 rotates and installs on swing seat 20, and the first end of connecting axle 30 is used for connecting antenna 200, and the first end of connecting axle 30 is provided with a socket joint section of thick bamboo, and the one end of antenna 200 cup joints in the socket joint section of thick bamboo, and drive assembly 40 installs on mounting bracket 10, and drive assembly 40's drive end links to each other with swing seat 20. Drive assembly 40 drive swing seat 20 is rotatory and drive connecting axle 30 synchronous revolution on mounting bracket 10 to drive antenna 200 and in the position of drawing in reciprocating motion between the position, specifically, in this embodiment, the position that the expansion position is said and becomes certain contained angle with the unmanned aerial vehicle fuselage, antenna 200 can carry out normal information transmission when being located this position department, draw in the position and be used for the adaptation to accept the position of antenna 200 in the unmanned aerial vehicle fuselage, for example accept chamber or accepting groove etc..

Furthermore, as shown in fig. 3 and 4, the antenna retracting device 100 of the present embodiment further includes a transmission assembly 50, where the transmission assembly 50 includes a fixed bevel gear 51 fixedly connected to the swing base 20 and a movable bevel gear 52 fixedly connected to the second end of the connection shaft 30 and in meshed connection with the fixed bevel gear 51, and the fixed bevel gear 51 can synchronously rotate along with the swing base 20 to drive the movable bevel gear 52 to rotate and drive the connection shaft 30 to rotate relative to the swing base 20, so as to drive the antenna 200 to switch between the unfolded state and the folded state. The unfolded state refers to a state in which the antenna 200 can normally transmit signals when located at the unfolded position, and the folded state refers to a state in which the antenna 200 cannot transmit information when located at the folded position. Specifically, as shown in fig. 5 to 7, fig. 5 shows a state where the antenna 200 is in a folded state in a folded position, fig. 6 shows a state where the antenna 200 is in an unfolded state, and fig. 7 shows an action process of rotating the antenna 200 from the folded position to the unfolded position.

Specifically, in the embodiment, the driving element 40 drives the swing seat 20 to rotate by an angle equal to the angle of rotation required for the antenna 200 to move from the unfolded position to the folded position, and in the process, the swing seat 20 drives the fixed bevel gear 51 to drive the movable bevel gear 52 to rotate by an angle equal to the angle of rotation required for the antenna 200 to rotate from the unfolded state to the folded state, so as to ensure synchronous and consistent switching of the position and the state of the antenna 200.

When the antenna folding and unfolding device 100 provided by the embodiment of the invention is used, the antenna 200 of the unmanned aerial vehicle is connected to the first end of the connecting shaft 30, when the use state and the position of the antenna 200 need to be changed, the driving component 40 is started, the driving component 40 drives the swinging seat 20 to rotate on the mounting frame 10, and the rotating component drives the connecting shaft 30 to synchronously rotate, so that the antenna 200 is driven to move from the unfolding position (folding position) to the folding position (unfolding position); meanwhile, the driving assembly 40 drives the oscillating shaft to oscillate, and the oscillating shaft drives the fixed bevel gear 51 to synchronously rotate, the fixed bevel gear 51 further drives the movable bevel gear 52 fixedly connected to the connecting shaft 30 to rotate, and the movable bevel gear 52 drives the connecting shaft 30 to rotate relative to the oscillating shaft, so as to drive the antenna 200 to rotate to an expanded state or a folded state, that is, to drive the antenna 200 to synchronously complete state switching in the position switching process in a cone transmission manner. Therefore, when the antenna 200 is switched between the folded position and the unfolded position, the using state of the antenna 200 can be synchronously changed, the antenna 200 is ensured to move to the unfolded position in the unfolded state and move to the folded position in the folded state, and the normal use and storage of the antenna 200 are ensured; and, the switching of antenna 200 self state and the switching of antenna 200 position realize through the drive of same drive assembly 40, need not to set up extra actuating mechanism and drive, compare its driver part of multistage drive and can reduce, antenna winding and unwinding devices 100's overall structure is simple, and the whole volume of device is less, satisfies unmanned aerial vehicle's miniaturization and lightweight preparation demand.

In another embodiment of the present invention, as shown in fig. 4, the rotation axis of the fixed bevel gear 51 is parallel to the rotation axis of the swing seat 20, so that when the driving assembly 40 drives the swing seat 20 to rotate, the fixed bevel gear 51 can rotate at the same angle, and the rotation axis of the movable bevel gear 52 coincides with the transmission axis of the connection shaft 30, so that when the fixed bevel gear 51 drives the movable bevel gear 52 to rotate, the movable bevel gear 52 can drive the connection shaft 30 to rotate synchronously, thereby driving the antenna 200 to rotate and switch between the unfolded state and the folded state. Specifically, in the present embodiment, the angle between the two axes of the fixed bevel gear 51 and the movable bevel gear 52 is 90 °, and the transmission ratio therebetween is determined by calculation based on the angle of movement required for switching the position of the antenna 200 and the angle of rotation required for switching the state.

In another embodiment of the present invention, as shown in fig. 3, 4 and 8, the mounting bracket 10 includes a first side plate 11 and a second side plate 12 which are oppositely disposed, a mounting gap 13 is formed between the first side plate 11 and the second side plate 12 at an interval, and the swing seat 20 is rotatably mounted in the mounting gap 13; the swing seat 20 has an installation cavity 21 penetrating through two opposite end portions of the swing seat 20, specifically, in this embodiment, the swing seat 20 is a cylindrical seat, the connecting shaft 30 is sleeved in the installation cavity 21 and is rotationally connected with a cavity wall of the installation cavity 21 through a rolling bearing, a first end of the connecting shaft 30 extends to the outside of the installation gap 13 to be connected with the antenna 200, a second end of the connecting shaft 30 extends out of the installation cavity 21 and is located in the installation gap 13, the movable bevel gear 52 is sleeved at a second end of the connecting shaft 30, and the fixed bevel gear 51 is fixedly connected to an outer wall surface of the swing seat 20.

Specifically, in the present embodiment, the driving assembly 40 drives the swing seat 20 to rotate in the installation gap 13, when the antenna 200 is in the folded position, the antenna 200 is located at one side of the first side plate 11/the second side plate 12, at this time, the connection line of the first wing 202 and the second wing 203 is perpendicular to the first side plate 11/the second side plate 12, and the antenna 200 is in the folded state, as shown in fig. 5; when the antenna 200 is in the unfolded state, the driving assembly 40 drives the swing base 20 to drive the antenna 200 to rotate to the other side of the first side plate 11/the second side plate 12, at this time, the connection line of the first wing 202 and the second wing 203 is parallel to the first side plate 11/the second side plate 12, and the antenna 200 is in the unfolded state, as shown in fig. 6.

In another embodiment of the present invention, as shown in fig. 3, 4 and 8, a first connecting shaft 22 is fixedly connected to a side wall of the swing seat 20 facing the first side plate 11, a second connecting shaft 23 is fixedly connected to a side wall of the swing seat 20 facing the second side plate 12, an axis of the first connecting shaft 22 coincides with an axis of the second connecting shaft 23, an end of the first connecting shaft 22 away from the swing seat 20 is rotatably connected to the first side plate 11, an end of the second connecting shaft 23 away from the swing seat 20 is rotatably connected to the second side plate 12, specifically, a first connecting hole 111 is opened at a position where the first side plate 11 facing the first connecting shaft 22, a second connecting hole (not shown) is opened at a position where the second side plate 12 facing the second connecting shaft 23, an end of the first connecting shaft 22 away from the swing seat 20 is inserted into the first connecting hole 111 and rotatably connected to a hole wall of the first connecting hole 111 through a rolling bearing, and an end of the second connecting shaft 23 away from the swing seat 20 is inserted into the second connecting hole and connected to the second connecting hole through a rolling bearing The hole walls of the connection holes are rotatably connected so that the swing seat 20 can rotate about the axis of the first/second coupling shaft 22/23 within the installation gap 13. Furthermore, the axis of the connecting shaft 30 is perpendicular to the axis of the first/

second transferring shafts

22, 23, the fixed bevel gear 51 is sleeved on the first/

second transferring shafts

22, 23, and the connecting shaft 30 drives the antenna 200 to rotate around the main shaft body 201, so that the antenna 200 is switched between the unfolded state and the folded state.

Further, in this embodiment, the first transfer shaft 22 and the second transfer shaft 23 have the same structure, and are both rotating shafts with flanges connected to one ends thereof, and the first transfer shaft 22 and the second transfer shaft 23 are respectively fixed to the side walls of the swing base 20 by the respective flanges in a threaded manner.

In another embodiment of the present invention, as shown in fig. 3, 4 and 8, the driving assembly 40 includes a driving motor 41, a driving gear 42, a driven gear 43 and a synchronous belt 44, the driving motor 41 is fixedly installed in the installation gap 13, the driving gear 42 is sleeved on an output shaft of the driving motor 41, the driven gear 43 is sleeved on the first transfer shaft 22, the synchronous belt 44 is wound between the driving gear 42 and the driven gear 43, the driving motor 41 rotates and drives the first transfer shaft 22 to rotate through the driving gear 42, the synchronous belt 44 and the driven gear 43, the first transfer shaft 22 rotates and drives the swing base 20 to rotate synchronously with the connection shaft 30, the fixed bevel gear 51 is sleeved on the second transfer shaft 23, so that the driving motor 41 drives the swing shaft to rotate along an axis of the second transfer shaft 23 (the first transfer shaft 22) and can drive the fixed bevel gear 51 to rotate synchronously along an axis of the second transfer shaft 23 (the first transfer shaft 22), the fixed bevel gear 51 is sleeved on the second transfer shaft 23 which is rotatably connected with the swing seat 20 and the second side plate 12, an additional structure is not required to be arranged on the swing seat 20 for connecting the fixed bevel gear 51, the arrangement of the fixed bevel gear 51 does not increase additional parts, the part structure is simple, and the space layout is more compact.

In another embodiment of the present invention, as shown in fig. 3, 4 and 8, the driving assembly 40 further includes a limiting cylinder 45, the limiting cylinder 45 is mounted on the first side plate 11, the driving gear 42 is rotatably mounted on the first side plate 11 and spaced beside the piston rod 451 of the limiting cylinder 45, and the piston rod 451 of the limiting cylinder 45 can move telescopically relative to the driving gear 42, so that the free end of the piston rod 451 is disengaged from or abutted against the gear teeth of the driving gear 42. Specifically, when the antenna 200 is in the extended position or the retracted position, the free end of the piston rod 451 of the limiting cylinder 45 abuts against the gear teeth of the driving gear 42 to prevent the driving gear 42 from rotating under the influence of an external force, and when the antenna 200 needs to switch the position, the limiting cylinder 45 is started to drive the free end of the piston rod 451 of the limiting cylinder 45 to disengage from the gear teeth of the driving gear 42, so that the driving gear 42 can be driven by the driving motor 41 to rotate freely.

Further, in the present embodiment, as shown in fig. 3, 4 and 8, the driving gear 42, the driven gear 43, the timing belt 44 and the limiting cylinder 45 are all disposed on a side portion of the first side plate 11 away from the swing seat 20, a third connecting hole (not shown) is formed in a position of the first side plate 11 corresponding to the output shaft of the driving motor 41, and an end portion of the output shaft of the driving motor 41 passes through the third connecting hole and is connected to the driving gear 42. Thus, the driving gear 42, the driven gear 43, the timing belt 44 and the limiting cylinder 45 are disposed at a side portion of the first side plate 11 away from the swing seat 20, and the driving gear 42, the driven gear 43, the timing belt 44 and the limiting cylinder 45 do not interfere with the swing seat 20. Specifically, the cover plate 112 is detachably connected to the side portion of the first side plate 11 away from the swing seat 20, and the cover plate 112 covers the driving gear 42, the driven gear 43, the synchronous belt 44 and the limiting cylinder 45, so that external impurities of wall dust affect the normal operation of the driving gear 42, the driven gear 43, the synchronous belt 44 and the limiting cylinder 45.

In another embodiment of the present invention, as shown in fig. 3, 8 and 9, the mounting bracket 10 further includes a transverse plate 14 interposed between the first side plate 11 and the second side plate 12 and located below the swing seat 20, and a distance between an end of the swing seat 20 away from the antenna 200 and the first transfer shaft 22/the second transfer shaft 23 is smaller than a distance between a top surface of the transverse plate 14 and a bottom surface of the swing seat 20, and the driving motor 41 is mounted on the bottom surface of the transverse plate 14, so that the driving motor 41 and the transverse plate 14 are not disposed to hinder the normal rotation of the swing seat 20.

In another embodiment of the present invention, as shown in fig. 3, 8 and 9, the mounting bracket 10 further includes a bottom plate 15 for connecting with the body of the drone, the bottom plate 15 is screwed with the body of the drone through screws or bolts, the bottom plate 15 is disposed below the transverse plate 14 at intervals, the driving motor 41 is installed between the transverse plate 14 and the bottom plate 15, and the first side plate 11 and the second side plate 12 are vertically connected to two opposite side portions of the bottom plate 15.

In another embodiment of the present invention, as shown in fig. 3, 8 and 9, the mounting bracket 10 further includes a screen cover 16 adapted to cover the mounting gap 13, the screen cover 16 is configured to cover the mounting gap 13, and foreign matters such as dust on the outer surface of the wall surface fall into the mounting gap 13, which affects normal rotation of each rotating component in the mounting gap 13. Specifically, in this embodiment, two opposite end portions of the screen housing 16 are respectively connected to two opposite end portions of the bottom plate 15, two opposite side portions of the screen housing 16 are respectively connected to the first side plate 11 and the second side plate 12 in a sliding manner, a through hole 161 for allowing the first end of the connecting shaft 30 to protrude in a matching manner is formed at a position where the screen housing 16 faces the swing seat 20, the screen housing 16 has a corrugated portion capable of being compressed or expanded, an annular boss 24 overlapping the orifice edge of the through hole 161 is formed by radially folding the end portion of the swing seat 20 close to the antenna 200, the annular boss 24 is connected to the corrugated portion of the screen housing 16 and is matched with the through hole 161, the corrugated portion can stretch or compress the corrugated portion when the swing seat 20 rotates, so as to prevent the screen housing 16 from interfering with the rotation of the swing seat 20, and simultaneously effectively prevent impurities such as dust from entering the installation gap 13, has smart structure and convenient use.

Another embodiment of the present invention further provides an unmanned aerial vehicle, which includes a main body (not shown), an antenna 200, and the antenna retraction device 100, wherein the antenna retraction device 100 is installed on the main body, the antenna 200 is connected to a first end of a connecting shaft 30 of the antenna retraction device 100, an accommodating groove (not shown) adapted to accommodate the antenna 200 is formed in the main body, and the antenna retraction device 100 can drive the antenna 200 to move to be accommodated in the accommodating groove.

In the unmanned aerial vehicle, the antenna 200 is mounted on the body of the unmanned aerial vehicle through the antenna retracting device 100, and when the antenna 200 is folded into or moved out of the accommodating groove and moved to the unfolding position, the using state of the antenna 200 can be synchronously changed, so that the antenna 200 is ensured to move to the unfolding position in the unfolding state and move to be accommodated in the accommodating groove in the folding state, and the normal use of the antenna 200 is ensured; and, the switching of antenna 200 self state and the switching of antenna 200 position realize through the drive of same drive assembly 40, need not to set up extra actuating mechanism and drive, compare its driver part of multistage drive and can reduce, accord with unmanned aerial vehicle's miniaturization and lightweight's development demand more.

The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents and improvements made within the spirit and principle of the present invention are intended to be included within the scope of the present invention.

Claims

1. An antenna winding and unwinding device, characterized by comprising:

a mounting frame;

the swinging seat is rotatably arranged on the mounting rack;

2. The antenna winding and unwinding device of claim 1, wherein the rotation axis of the fixed bevel gear is parallel to the rotation axis of the swing seat, and the rotation axis of the movable bevel gear coincides with the transmission shaft of the connection shaft.

3. The antenna winding and unwinding device of claim 1 or 2, wherein the mounting bracket comprises a first side plate and a second side plate which are arranged oppositely, a mounting gap is formed between the first side plate and the second side plate at a spacing, and the swinging seat is rotatably mounted in the mounting gap;

4. The antenna winding and unwinding device according to claim 3, wherein the swing seat is fixedly connected with a first transfer shaft to a side wall of the first side plate, the swing seat is fixedly connected with a second transfer shaft to a side wall of the second side plate, an axis of the first transfer shaft coincides with an axis of the second transfer shaft, an end of the first transfer shaft, which is far away from the swing seat, is rotatably connected with the first side plate, an end of the second transfer shaft, which is far away from the swing seat, is rotatably connected with the second side plate, the swing seat rotates around the axes of the first transfer shaft/the second transfer shaft, an axis of the connecting shaft is perpendicular to the axes of the first transfer shaft/the second transfer shaft, and the fixed bevel gear is sleeved on the first transfer shaft/the second transfer shaft.

5. The antenna winding and unwinding device of claim 4, wherein the driving assembly comprises a driving motor, a driving gear, a driven gear and a synchronous belt, the driving motor is fixedly installed in the installation gap, the driving gear is sleeved on an output shaft of the driving motor, the driven gear is sleeved on the first transfer shaft, the synchronous belt is wound between the driving gear and the driven gear, the driving motor rotates and drives the first transfer shaft to rotate through the driving gear, the synchronous belt and the driven gear, the first transfer shaft rotates and drives the swing seat to synchronously rotate together with the connecting shaft, and the fixed bevel gear is sleeved on the second transfer shaft.

6. The antenna winding and unwinding device of claim 5, wherein the driving assembly further comprises a limiting cylinder, the limiting cylinder is mounted on the first side plate, the driving gear is rotatably mounted on the first side plate and is spaced apart from the side of a piston rod of the limiting cylinder, and the piston rod of the limiting cylinder can move telescopically relative to the driving gear, so that the free end of the piston rod is disengaged from or abuts against the gear teeth of the driving gear.

7. The antenna winding and unwinding device of claim 5, wherein the mounting bracket further comprises a transverse plate sandwiched between the first side plate and the second side plate and located below the swing seat, a distance between an end of the swing seat far away from the antenna and the first transfer shaft/the second transfer shaft is smaller than a spacing distance between a top surface of the transverse plate and a bottom surface of the swing seat, and the driving motor is mounted on the bottom surface of the transverse plate.

8. The antenna winding and unwinding device of claim 7, wherein the mounting bracket further comprises a bottom plate for connecting with the unmanned aerial vehicle body, the bottom plate is arranged below the transverse plate at intervals, and the first side plate and the second side plate are perpendicularly connected to two opposite side portions of the bottom plate.

9. The antenna stowing device according to claim 8, wherein the mounting bracket further includes a screen cover for fittingly covering the mounting gap, the two opposite end parts of the wind shield are respectively connected with the two opposite end parts of the bottom plate, the two opposite side parts of the wind shield are respectively connected with the first side plate and the second side plate in a sliding way, a through hole for the first end of the connecting shaft to extend out in a matching way is arranged at the position of the screen cover opposite to the swinging seat, the end part of the swinging seat close to the antenna is radially folded to form an annular boss lapped on the edge of the hole opening of the through hole, the annular boss is connected with the fold part of the screen cover and is matched with the seal cover to cover the through hole, and when the swinging seat rotates, the annular boss can stretch or compress the fold part so as to prevent the screen cover from blocking the rotation of the swinging seat.

10. An unmanned aerial vehicle, characterized in that, includes fuselage, antenna and the antenna winding and unwinding devices of any claim 1 ~ 9, the antenna winding and unwinding devices install in on the fuselage, the antenna connect in the first end of antenna winding and unwinding devices's the connecting axle, set up the adaptation on the fuselage and accept the accepting groove of antenna, the antenna winding and unwinding devices can drive the antenna remove to accept in the accepting groove.