CN107458576B

CN107458576B - Unmanned plane

Info

Publication number: CN107458576B
Application number: CN201610389244.2A
Authority: CN
Inventors: 张方应; 邓秀红
Original assignee: BYD Co Ltd
Current assignee: BYD Co Ltd
Priority date: 2016-06-02
Filing date: 2016-06-02
Publication date: 2020-11-06
Anticipated expiration: 2036-06-02
Also published as: CN107458576A

Abstract

In order to solve the problems that the existing unmanned aerial vehicle has a complex structure for realizing arm folding and unfolding, occupies a large volume and increases the volume of the unmanned aerial vehicle, the invention provides the unmanned aerial vehicle which comprises a machine body and a plurality of arms; a plurality of supporting seats corresponding to the number of the machine arms are arranged on the machine body; the supporting seat is provided with a lower locking part and a locking movement mechanism; the locking movement mechanism comprises a lock head sleeve, a locking head, a lock head spring and a lock cover; a limiting part and a push rod mechanism are arranged at the hinged end of the machine arm; according to the unmanned aerial vehicle, the lower locking part and the locking head which are arranged on the supporting seat are matched with the limiting part on the horn to complete the unfolding and locking functions of the horn, and meanwhile, the locking of the locking head can be released through the push rod mechanism arranged on the horn, so that the horn can be folded and retracted. The machine arm is more firmly and smoothly jointed and locked; the horn is safer withdrawing folding in-process, and locking head and push rod mechanism isotructure occupation space are little, can effectively save unmanned aerial vehicle inner space.

Description

Unmanned plane

Technical Field

The invention relates to the field of unmanned aerial vehicles, in particular to the field of unmanned aerial vehicles with retractable and foldable arms.

Background

Unmanned aerial vehicles (or aircrafts) are increasingly recognized as simple remote control toys and as professional overhead photography equipment. The current unmanned aerial vehicle is common to include the organism and a plurality of installs on the organism, from the horn that the organism went up to the outside and expandes, and the outer tip installation of horn has the motor of screw, and is rotatory through motor drive screw, and then realizes unmanned aerial vehicle's flight.

At present, the horn of most unmanned aerial vehicle can't receive and release foldingly now, and partial unmanned aerial vehicle has realized receiving and releasing foldingly of horn, and it is including setting up the horn locking mechanism on the organism, and this horn locking mechanism realizes the locking of each horn and removes the locking. But its structure that realizes that the horn receive and releases the folding is generally all more complicated, and locking means occupies that the volume is great, has increased unmanned aerial vehicle volume.

Disclosure of Invention

The invention provides an unmanned aerial vehicle, aiming at solving the problems that the existing unmanned aerial vehicle has a complex structure for realizing folding and unfolding of a horn, occupies a large volume and increases the volume of the unmanned aerial vehicle.

The invention provides an unmanned aerial vehicle, which comprises a body and a plurality of arms; a plurality of supporting seats corresponding to the number of the machine arms are arranged on the machine body; each horn comprises a hinged end and a free end, the hinged end of each horn is hinged to the supporting seat, and a motor with a propeller is mounted on the free end;

the supporting seat is provided with a lower locking part and a locking movement mechanism; the locking movement mechanism comprises a lock head sleeve, a locking head, a lock head spring and a lock cover; the locking cover is plugged at the tail part of the locking head sleeve, the locking head and the locking head spring are arranged in the locking head sleeve, the locking head spring is positioned between the locking head and the locking cover, and the locking head spring provides elastic force for the locking head in the direction of the machine arm; the locking head can move back and forth in the lock sleeve, and a locking space is formed between the lower locking part and the locking head;

the articulated end of the machine arm is provided with a limiting part and a push rod mechanism; the limiting part is matched with the locking space and can be locked in the locking space; the push rod mechanism is matched with the locking head and can push the locking head to compress the lock spring to release the locking state of the limiting part and the locking space.

Further, the push rod mechanism comprises a push rod, a compression spring and a driving mechanism;

a spring blocking rib is arranged at the hinged end of the machine arm, and the compression spring is positioned between the spring blocking rib and the push rod and is used for providing elastic force for enabling the push rod to be far away from the locking head;

the driving mechanism is connected with the push rod and used for applying driving force for enabling the push rod to move towards the direction of the locking head.

Furthermore, a direction-changing inclined block is arranged on the push rod; the driving mechanism is an unlocking button, and the unlocking button is matched with the turning inclined block.

Furthermore, the push rod comprises a frame-shaped body, the middle of which is provided with a square cavity;

the front end of the frame-shaped body is provided with a pushing column; the pushing column is matched with the locking head;

a spring column is arranged in the square cavity of the frame-shaped body; the compression spring is arranged between the spring post and the blocking spring rib; the direction-changing inclined block is arranged at the lower end of the frame-shaped body.

Furthermore, an unlocking button hole is formed in the horn, and the unlocking button part extends out of the unlocking button hole.

Furthermore, the front end of the locking head comprises an end face, an upper matching inclined plane positioned at the upper part of the end face and a lower matching inclined plane positioned at the lower part of the end face;

the limiting part on the machine arm comprises a limiting bottom surface, a limiting vertical surface, a limiting lower inclined surface and a limiting upper inclined surface;

the upper matching inclined plane and the end face on the locking head are used for matching with the upper limiting part on the machine arm, and the force applied by the limiting part on the upper matching inclined plane is converted into the driving force for the locking head to move backwards;

the lower matching inclined plane on the locking head is used for matching with the limiting upper inclined plane on the limiting part, and the limiting part of the machine arm is clamped below the lower matching inclined plane of the locking head;

the limiting bottom surface is matched with the lower locking part, so that the limiting part of the machine arm is clamped above the lower locking part.

Furthermore, a shock pad is arranged on the lower locking part.

Further, a horn cover is mounted on the horn.

Furthermore, two articulated arms are arranged on the supporting seat, and each articulated arm is provided with an articulated shaft hole; a rotating shaft hole is formed in the hinged end of the machine arm; and the articulated shaft penetrates through the rotating shaft hole on the machine arm and the articulated shaft hole on the articulated arm to articulate the machine arm on the articulated arm.

Furthermore, a spring groove is formed in the tail end of the locking head; the lock cylinder spring is disposed in the spring groove.

Furthermore, the tail end of the locking head is also provided with an anti-exit boss, and correspondingly, a step is arranged in the locking head sleeve; the anti-exit boss is clamped in the step, so that the locking head is prevented from popping out of the front end of the locking head sleeve.

According to the unmanned aerial vehicle, the lower locking part and the locking head which are arranged on the supporting seat are matched with the limiting part on the horn to complete the unfolding and locking functions of the horn, and meanwhile, the locking of the locking head can be released through the push rod mechanism arranged on the horn, so that the horn can be folded and retracted. The machine arm is more firmly and smoothly jointed and locked; in the locking releasing process, the unlocking button must be pressed by one hand, and the other hand applies pressure to complete the retraction and folding of the horn, so that the horn cannot fall down automatically, the condition that the user is injured by the falling of the horn is avoided, and the horn is safer in the retraction and folding process. And locking head and push rod mechanism isotructure occupation space is little, can effectively save unmanned aerial vehicle inner space.

Drawings

Fig. 1 is an exploded schematic view of an unmanned aerial vehicle according to an embodiment of the present invention;

fig. 2 is a schematic cross-sectional view of an unmanned aerial vehicle according to an embodiment of the present invention;

FIG. 3 is an enlarged schematic view at D of FIG. 2;

FIG. 4 is a front perspective view of a locking head according to an embodiment of the present invention;

FIG. 5 is a perspective view of a locking head from the back of the locking head in accordance with an embodiment of the present invention;

FIG. 6 is a perspective view of a horn provided in an embodiment of the present invention;

FIG. 7 is a front perspective view of a support base according to an embodiment of the present invention;

FIG. 8 is a perspective view of a back side of a support base according to an embodiment of the present invention;

FIG. 9 is a perspective view from the back of a putter mechanism according to an embodiment of the present invention;

FIG. 10 is a front perspective view of a putter mechanism according to an embodiment of the present invention;

figure 11 is a schematic view of an unmanned aerial vehicle arm provided in an embodiment of the present invention as it begins deployment in a retracted state;

figure 12 is a schematic view of an unmanned aerial vehicle arm provided in an embodiment of the present invention deployed to 30 degrees;

fig. 13 is a schematic view of the fully deployed state of the arm of the drone according to an embodiment of the present invention;

fig. 14 is a schematic diagram of the retraction of the arm of the drone provided in an embodiment of the present invention in a fully deployed state;

figure 15 is a schematic view of the arm of the drone provided in the particular embodiment of the present invention retracted to 30 degrees;

figure 16 is a schematic view of a drone provided in an embodiment of the invention with its horn fully retracted;

FIG. 17 is an enlarged schematic view at A in FIG. 11;

FIG. 18 is an enlarged schematic view at B in FIG. 12;

fig. 19 is an enlarged schematic view at C in fig. 13.

Wherein, 1, the body; 2. a horn; 3. a boom cover; 4. a motor; 5. a propeller; 6. a paddle nut; 7. a screw; 11. a supporting seat; 12. a crash pad; 2a, a hinged end; 2b, a free end; 21. hinging a shaft; 22. a push rod; 23. a compression spring; 24. an unlock button; 25. a limiting part; 26. a spindle nut; 27. a spring blocking rib; 28. an unlock button hole; 29. a rotating shaft hole; 31. a screw post; 2b1, motor screw hole; 110. a lower lock portion; 111. an articulated arm; 112. a lock head sleeve; 113. a locking head; 114. a lock spring; 115. a locking cover; 41. a threaded mounting portion; 1131. an upper matching inclined plane; 1132. an end face; 1133. a lower mating slope; 1134. a spring slot; 1135. preventing the boss from being out; 1111. the hinge shaft hole; 1121. a lock head groove; 220. a frame-shaped body; 221. pushing the column; 222. a direction-changing oblique block; 223. a spring post; 2220. a direction-changing inclined plane; 251. a limiting bottom surface; 252. limiting a vertical surface; 253. limiting the lower inclined plane; 254. the upper inclined plane is limited.

Detailed Description

In order to make the technical problems, technical solutions and advantageous effects solved by the present invention more clearly apparent, the present invention is further described in detail below with reference to the accompanying drawings and 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.

Examples

The unmanned aerial vehicle disclosed by the invention is explained in detail in the embodiment with reference to the attached drawings.

As shown in fig. 1, 2 and 3, the unmanned aerial vehicle disclosed in this example includes a body 1 and a plurality of arms 2; in this example, to make the figure look clearer without cluttering, only a horn 2 is schematically shown on the body 1 of the drone shown in the drawings. However, the number of the horn 2 is not limited thereto, and generally, the number of the horn 2 is 2 or more; for example, 3 or 4. Of course, a greater number of booms 2 is also possible, but this is not essential.

The shape of the body 1 is not particularly limited, and it may be a square structure as shown in fig. 1 and 2 in this example, or may be any other shape such as a simulated shape of birds or flying insects, and the like. Moreover, the body 1 is publicly known, and is exempt from tremble, and is not described again.

For convenience of description, the "front" and "rear" directions of the arm 2 are simply defined, the direction of the arm 2 pointing to the body 1 is referred to as "front" direction, and the direction pointing away from the body 1 is referred to as "rear" direction. Similarly, other structures mounted on the horn 2 may be used as described herein. In contrast, the "front" and "rear" directions of the support base 11 mounted on the machine body 1 are defined as follows: the direction pointing to the corresponding horn 2 is the "forward" direction of the support base 11, and the opposite direction corresponding to the front end of the support base 11 is the "backward" (or rear) direction. Similarly, the locking head 113, the locking head sleeve 112, etc. of the supporting base 11 can be described by this direction.

A plurality of supporting seats 11 corresponding to the number of the machine arms 2 are arranged on the machine body 1; each of the arms 2 comprises a hinged end 2a and a free end 2b, and the hinged end 2b of each arm 2 is hinged on the support seat 11; the free end 2b is provided with a motor 4 with a propeller 5; by hinged end 2a is meant the end connected to the fuselage and by free end 2b the other end remote from hinged end 2 a. Thus, the machine arm 2 can rotate around the hinged position of the supporting seat 11 and the hinged end 2a, and the free end 2b of the machine arm 2 rotates clockwise or anticlockwise around the machine body 1, so that the machine arm 2 is retracted, folded or unfolded; the state in which the arm 2 is attached to the machine body 1 is a retracted state (or a folded state), and the state in which the arm 2 is away from the machine body 1 is referred to as an extended state.

In this example, as shown in fig. 1, 2, and 6, specifically, the inside of the arm 2 is hollow, so that the inside thereof can be wired, and other structures and the like can be attached. The free end 2b of the arm 2 is in a round shape matched with the appearance shape of the motor 4; a plurality of motor screw holes 2b1 are arranged on the free end 2b of the machine arm 2; correspondingly, the motor 4 is also provided with a plurality of screw holes (not marked in the figure), and the motor 4 is fixed on the free end 2b by the screw 7 which is connected with the motor screw hole 2b1 on the free end 2b and the screw hole on the motor 4 through screw threads. The above-mentioned motor 4 equipped with the propeller 5 is publicly known, and the output shaft of the motor 4 is provided with a thread mounting portion 41, and the propeller 5 is sleeved on the thread mounting portion 41 and then locked on the thread mounting portion 41 through a paddle nut 6, so as to fixedly install the propeller 5 on the output shaft of the motor 4.

As shown in fig. 1 and 2, a horn cover 3 is generally mounted on the horn 2, a screw post 31 having a screw hole is provided on the horn cover 3, and a plurality of screw holes are correspondingly provided on the horn 2, and then the horn cover 3 is mounted on the horn 2 by the cooperation of the screw 7 with the screw post 31 and the screw hole on the horn 2.

The support base 11 may be integrally formed on the machine body 1; or can be arranged on the machine body 1 by welding, clamping or connecting by a screw 7 and the like; in this example, as shown in fig. 1 to 3, the support base 11 is mounted on the machine body 1 by screws 7.

Specifically, the horn 2 is articulated with the support base 11 as follows: two hinge arms 111 are arranged on the support seat 11, and each hinge arm 111 is provided with a hinge shaft hole 1111; a rotating shaft hole 29 (see fig. 6) is arranged on the hinged end 2a of the machine arm 2; a hinge shaft 21 passes through the hinge shaft hole 29 of the horn 2 and the hinge shaft hole 1111 of the hinge arm 111 to hinge the horn 2 to the hinge arm 111. Specifically, a nut is provided at one end of the hinge shaft 21, and an external thread is provided at the other end, and after the hinge shaft 21 passes through the pivot hole 29 and the hinge shaft hole 1111, a spring medium is fitted over the external thread and then tightened by the pivot nut 26. In this way, the articulation of the horn 2 with the support 11 is achieved.

Meanwhile, as shown in fig. 1-3, 7 and 8, a lower lock part 110 and a locking movement mechanism are arranged on the support base 11; the locking movement mechanism comprises a lock head sleeve 112, a lock head 113, a lock head spring 114 and a lock cover 115; the lock cover 115 is sealed at the tail of the lock head sleeve 112, and is screwed at the tail of the lock head sleeve 112 through a screw 7, so that a lock head spring 114 and a locking head 113 are installed in the lock head sleeve 112, the center of the lock head sleeve 112 is a hollow groove, named as a lock head groove 1121, the locking head 113 moves in the lock head groove 1121, the lock head spring 114 is located between the locking head 113 and the lock cover 115, and the lock head spring 114 provides elastic force for the locking head 113 in the direction of the horn 2; the locking head 113 can move back and forth in the locking head sleeve 112, and a locking space is formed between the lower locking part 110 and the locking head 113.

Specifically, as shown in fig. 4 and 5, the front end of the locking head 113 includes an end surface 1132, an upper mating inclined surface 1131 located at an upper portion of the end surface 1132, and a lower mating inclined surface 1133 located at a lower portion of the end surface 1132; that is, the front end of the locking head 113 has a pointed shape with the tip cut off. The tail end of the locking head 113 is provided with a spring groove 1134; the lock spring 114 is disposed within the spring channel 1134. Specifically, the number of the locking springs 114 is two, and the number of the spring grooves 1134 is two. Meanwhile, the tail end of the locking head 113 is also provided with an anti-protruding boss 1135, and correspondingly, a step is arranged in the locking head sleeve 112; the protrusion 1135 is caught in the step to prevent the locking head 113 from being ejected from the front end of the locking head sleeve 112. That is, the locking head 113 can move back and forth in the lock head sleeve 112, but due to the protrusion 1135 and the step, the locking head 113 cannot be limited in the lock head sleeve 112 and cannot move out of the lock head sleeve 112.

A limiting part 25 and a push rod mechanism are arranged on the hinged end 2a of the machine arm 2; the limiting part 25 is matched with the locking space and can be locked in the locking space; the push rod mechanism is matched with the locking head 113, and can push the locking head 113 to compress the lock spring 114, so that the locking state of the limiting part 25 and the locking space is released.

In this embodiment, the lower lock portion 110 is a fixed structure, and is a plate-shaped platform disposed at the lower portion of the support base 11; the lower lock part 110 functions to prevent the lower lock part 110 from being continuously unfolded when the lower lock part 110 is rotated by the limit part 25 of the arm 2 when the arm 2 is unfolded, that is, the maximum degree of unfolding of the arm 2 is until the limit part 25 of the arm 2 contacts the lower lock part 110. As shown in fig. 1-3, for example, when the arm 2 rotates counterclockwise around the hinge shaft 21, the limit portion 25 of the arm 2 is stopped when rotating to contact the lower lock portion 110, and can not rotate counterclockwise any more (the arm 2 shown in fig. 1-3 is located at the right side of the body 1, and thus rotates counterclockwise when being unfolded, and rotates clockwise when being retracted, of course, if the arm 2 is installed at the left side of the body 1, the arm 2 rotates clockwise when being unfolded, and rotates counterclockwise when being retracted).

In this example, the locking head 113 is movable back and forth in the locking head housing 112 (forward movement in the arm 2 direction, compression of the locking spring 114, and backward movement in the body 1 direction). When the locking head 113 is not pushed by the push rod mechanism, the locking head 113 is naturally moved forward by the lock spring 114, and the locking head 113 and the lower lock part 110 form a structure for limiting the movement of the deadlocking arm 2. When the locking head 113 is acted by the push rod mechanism to compress the lock spring 114, and moves backward, the locking head 113 can not play a role of limiting and locking, thereby releasing the locking, and the machine arm 2 can be retracted towards the machine body 1 (the machine arm 2 moves clockwise in fig. 1 and fig. 2).

The structure of the push rod mechanism is not particularly limited as long as it can be engaged with the locking head 113, and when the unmanned aerial vehicle needs to release the locking state between the arm 2 and the support base 11, the push rod mechanism can push the locking head 113 in the locking movement mechanism to operate, so that the locking head 113 compresses the tapered end spring 114, and the limiting portion 25 can be rotated out of the locking space.

In this example, a specific push rod mechanism is shown, as shown in fig. 1, 2 and 3, the push rod mechanism comprises a push rod 22, a compression spring 23 and a driving mechanism;

a blocking spring rib 27 is arranged on the hinged end 2a of the horn 2, and the compression spring 23 is positioned between the blocking spring rib 27 and the push rod 22 and used for providing elastic force for enabling the push rod 22 to be far away from the locking head 113;

the driving mechanism is connected with the push rod 22 and is used for applying driving force for enabling the push rod 22 to move towards the locking head 113.

The positional relationship among the compression spring 23, the push rod 22, and the catch spring rib 27 is not particularly limited as long as the push rod 22 is moved in a direction away from the locking head 113 by the elastic force of the compression spring 23 in a normal state.

The specific structure and position of the driving mechanism are not particularly limited, as long as the driving mechanism can drive the push rod 22 to move towards the locking head 113, when the driving mechanism needs to unlock the horn 2, the driving mechanism can drive the push rod 22 to move towards the locking head 113, and the push rod 22 pushes the locking head 113 to compress the lock spring 114, so that the limiting portion 25 on the horn 2 can rotate out of the known space.

Specifically, in this example, as shown in fig. 9 and 10, the push rod 22 includes a frame-shaped body 220 having a square-shaped cavity in the middle;

the front end of the frame-shaped body 220 is provided with a pushing column 221; the pushing column 221 is matched with the locking head 113;

a spring column 223 is arranged in the square cavity of the frame-shaped body 220; the compression spring 23 is installed between the spring column 223 and the blocking spring rib 27; the spring post 223 is located at the rear inside the frame-shaped body 220, and therefore, the compression spring 23 must be disposed at a position further forward inside the horn 2 than the spring post 223.

And the lower end of the frame-shaped body 220 is provided with a direction-changing oblique block 222;

the driving mechanism is an unlocking button 24, and the unlocking button 24 is matched with the direction-changing oblique block 222; the horn 2 is provided with an unlocking button hole 28 (see fig. 6), and the unlocking button 24 partially protrudes from the unlocking button hole 28. Specifically, the lower end of the unlock button 24 protrudes from the unlock button hole 28 of the slave arm 2, and the upper end thereof contacts the direction-changing inclined surface 2220 of the direction-changing inclined block 222, so that the up-and-down movement of the unlock button 24 is converted into the back-and-forth movement of the push rod 22.

As shown in fig. 17, the limiting portion 25 of the horn 2 includes a limiting bottom surface 251, a limiting vertical surface 252, a limiting lower inclined surface 253, and a limiting upper inclined surface 254;

the upper matching inclined surface 1131 and the end surface 1132 on the locking head 113 are used for matching with the upper limiting part 25 of the horn 2, and the force applied to the upper matching inclined surface 1131 by the limiting part 25 is converted into the driving force for the backward movement of the locking head 113;

the lower matching inclined surface 1133 on the locking head 113 is used for matching with the upper limiting inclined surface 254 on the limiting part 25, so that the limiting part 25 of the horn 2 is clamped below the lower matching inclined surface 1133 of the locking head 113;

the bottom surface 251 of the stopper cooperates with the lower lock portion 110 to allow the stopper portion 25 of the arm 2 to be caught above the lower lock portion 110.

Preferably, the lower lock portion 110 is provided with a crash pad 12. The crash pad 12 can reduce the shock of the unmanned aerial vehicle during flight.

The working process of the drone arm 2 from the retracted (or folded) state to the fully open state is described below with reference to fig. 11-13.

As shown in fig. 11, a force is applied to the horn 2 in the direction indicated by the arrow R1 in the drawing, so that the horn 2 rotates counterclockwise about the hinge shaft 21. At this time, as shown in an enlarged view in fig. 17, the upper positioning portion 25 of the arm 2 is not in contact with the locking head 113, the lower locking portion 110, and the like on the support base 11. When it continues to rotate, the stopper 25 of the arm 2 also rotates counterclockwise about the hinge shaft 21.

When the arm 2 is rotated to a certain angle, for example, as shown in fig. 12, when the arm 2 is rotated to a 30-degree angle with respect to the arm 2 (the arm 2 is continuously applied with force in the direction of the arrow R1), as shown in the enlarged schematic view of fig. 18, the bottom surface 251 of the stopper 25 comes into contact with the upper mating inclined surface 1131 of the locking head 113; as the instantaneous needle of the horn 2 rotates, the limit portion 25 applies a pushing force to the upper fitting slope 1131, so that the locking head 113 moves backward (leftward in the drawing), and then compresses the locking head spring 114; then, the limiting portion 25 continues to rotate around the rotation axis, the limiting bottom surface 251 pushes the end surface 1132 of the locking head 113, and then the limiting vertical surface 252 and the limiting lower inclined surface 253 continuously push the end surface 1132 of the locking head 113 and continuously push the locking head 113 to move backwards.

When the boundary line between the lower limit inclined surface 253 and the upper limit inclined surface 254 passes through the lowermost end surface 1132 of the locking head 113, the state shown in fig. 13 is entered, the horn 2 is flattened, and the angle between the machine body 1 and the horn 2 is about 90 degrees. At this time, the schematic view is enlarged as shown in fig. 19; at this time, the upper limit slope 254 is lower than the lower engaging slope 1133 of the locking head 113, and the locking head 113 moves forward (to the right in the drawing) under the action of the locking spring 114. The lower matching inclined surface 1133 of the locking head 113 is contacted with the upper limit inclined surface 254 to match and lock the horn 2, so that the horn 2 is locked in the locking space between the lower locking part 110 and the locking head 113. Specifically, since the locking head 113 prevents the arm 2 from rotating in the clockwise direction in the figure and the lower lock portion 110 prevents the arm 2 from rotating in the counterclockwise direction in the figure, the operation of unfolding and locking the arm 2 is completed by the engagement of the stopper portion 25 on the arm 2 with the locking head 113 and the lower lock portion 110.

The operation of the unmanned aerial vehicle arm 2 unlocking from the deployed state and then retracting to the fully retracted state (or folded state) is described below with reference to fig. 14 to 16.

As shown in fig. 14, when the unlock button 24 is pressed with one hand in the direction of the arrow R3 in the drawing, as will be understood from the enlarged schematic view shown in fig. 19 (because the state shown in fig. 14 is actually the same as the state shown in fig. 13), the upward movement of the unlock button 24 will move the push rod 22 to the left and press the lock head 113, so that the lock head 113 moves to the left, and the lock spring 114 is compressed, so that the lock spring 114 accumulates elastic force. The unlock button 24 is pressed until the lower engaging inclined surface 1133 of the locking head 113 is completely removed from the limiting portion 25, at this time, the locking function of the locking head 113 is released, and the locking head 113 can not limit the clockwise rotation of the arm 2 any more. At this time, the other hand presses the arm cover 3 downward in the direction indicated by the arrow R2 in fig. 14 by applying pressure on the arm cover 3; in this manner, the arm 2 starts rotating in the clockwise direction. The stopper 25 is gradually rotated out of the locking space in the opposite process to the rotation of the stopper 25 into the locking space. Meanwhile, when the limiting part 25 rotates out counterclockwise, the push rod 22 is gradually separated from the locking head 113, and after the push rod 22 is separated from the locking head 113, the locking head 113 applies an acting force to the limiting part 25 under the elastic force of the compression spring 23, so as to further contact and withdraw the horn 2, and at this time, the unlocking button 24 does not need to be pressed (pressing is also not so-called, and the operation is not influenced).

When the pressure is continuously applied in the direction of the arrow R2, as shown in fig. 15, when the arm 2 retracts to a certain angle, for example, the angle between the arm 2 and the machine body 1 is 30 degrees in this example, the state can refer to the enlarged schematic diagram shown in fig. 18 (because the state shown in fig. 15 is actually the same as the state shown in fig. 12). At this time, the bottom surface 251 of the stopper 25 exceeds the upper engaging slope 1131 of the locking head 113, and the locking head 113 no longer acts on the stopper 25.

Finally, the result is shown in fig. 16, and the state thereof can be referred to the enlarged schematic view shown in fig. 17 (since the state shown in fig. 16 is actually the same as the state shown in fig. 17). The upper positioning part 25 of the arm 2 is not in contact with the locking head 113 and the lower locking part 110 of the support 11. The retraction (or folding) of the arm 2 is completed.

According to the unmanned aerial vehicle provided by the invention, the lower locking part 110 and the locking head 113 which are arranged on the supporting seat 11 are matched with the limiting part 25 on the horn 2 to complete the unfolding and locking functions of the horn 2, and meanwhile, the locking of the locking head 113 can be released through the push rod mechanism arranged on the horn 2, so that the retraction and folding of the horn 2 are realized. The attaching and locking of the machine arm 2 are firmer and smoother; in the locking releasing process, the unlocking button 24 must be pressed by one hand, and pressure is applied by the other hand to complete the retraction and folding of the machine arm 2, so that the machine arm 2 cannot fall down by itself, the situation that the user is injured by the self-falling of the machine arm 2 is avoided, and the machine arm 2 is safer in the retraction and folding process. And locking head 113 and push rod mechanism isotructure occupation space is little, can effectively save unmanned aerial vehicle inner space.

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 unmanned aerial vehicle comprises a body and a plurality of arms; a plurality of supporting seats corresponding to the number of the machine arms are arranged on the machine body; each horn comprises a hinged end and a free end, the hinged end of each horn is hinged to the supporting seat, and a motor with a propeller is mounted on the free end;

the device is characterized in that the supporting seat is provided with a lower locking part and a locking movement mechanism; the locking movement mechanism comprises a lock head sleeve, a locking head, a lock head spring and a lock cover; the locking cover is plugged at the tail part of the locking head sleeve, the locking head and the locking head spring are arranged in the locking head sleeve, the locking head spring is positioned between the locking head and the locking cover, and the locking head spring provides elastic force for the locking head in the direction of the machine arm; the locking head can move back and forth in the lock sleeve, and a locking space is formed between the lower locking part and the locking head;

the articulated end of the machine arm is provided with a limiting part and a push rod mechanism; the limiting part is matched with the locking space and can be locked in the locking space; the push rod mechanism is matched with the locking head and can push the locking head to compress the lock spring so as to release the locking state of the limiting part and the locking space;

the push rod mechanism comprises a push rod, a compression spring and a driving mechanism;

2. An unmanned aerial vehicle as claimed in claim 1, wherein the push rod is provided with a direction-changing sloping block; the driving mechanism is an unlocking button, and the unlocking button is matched with the turning inclined block.

3. An unmanned aerial vehicle as defined in claim 2, wherein the pushrod comprises a frame-shaped body with a square-shaped cavity in the middle;

a spring column is arranged in the square cavity of the frame-shaped body; the compression spring is arranged between the spring post and the blocking spring rib;

the direction-changing inclined block is arranged at the lower end of the frame-shaped body.

4. The drone of claim 2, wherein the horn is provided with an unlock button aperture, the unlock button portion protruding from the unlock button aperture.

5. The unmanned aerial vehicle of claim 1, wherein the front end of the locking head comprises an end face, an upper mating ramp located at an upper portion of the end face, and a lower mating ramp located at a lower portion of the end face;

the upper matching inclined plane and the end face on the locking head are used for matching with the upper limiting part on the machine arm so as to convert the force applied by the limiting part on the upper matching inclined plane into the driving force for the locking head to move backwards;

the lower matching inclined plane on the locking head is used for matching with the limiting upper inclined plane on the limiting part so as to clamp the limiting part of the machine arm below the lower matching inclined plane of the locking head;

6. The drone of claim 1, wherein the lower lock portion is provided with a crash pad.

7. The drone of claim 1, wherein the horn has a horn cover mounted thereon.

8. The unmanned aerial vehicle of claim 1, wherein the support base is provided with two articulated arms, and each articulated arm is provided with an articulated shaft hole; a rotating shaft hole is formed in the hinged end of the machine arm; and the hinge shaft penetrates through the rotating shaft hole on the machine arm and the hinge shaft hole on the hinge arm so as to hinge the machine arm on the hinge arm.

9. The unmanned aerial vehicle of claim 1, wherein the tail end of the locking head is provided with a spring groove; the lock head spring is arranged in the spring groove.

10. The unmanned aerial vehicle of claim 1, wherein the tail end of the locking head is further provided with an anti-protruding boss, and a step is arranged in the locking head sleeve; the anti-exit boss is clamped in the step to prevent the locking head from popping out of the front end of the locking head sleeve.