KR101642396B1

KR101642396B1 - The drone with the landing device in the motor shaft

Info

Publication number: KR101642396B1
Application number: KR1020150141966A
Authority: KR
Inventors: 최종필
Original assignee: 최종필
Priority date: 2015-10-12
Filing date: 2015-10-12
Publication date: 2016-07-25

Abstract

A motor for rotating a propeller is mounted at an end of each of the wings, and a motor is mounted at an end of the motor shaft to maintain a stop state regardless of the rotation of the motor And a landing device for vertically mounting the landing device on the motor shaft, the landing device being a structure for mounting the landing device while helping the wing to fly.
To this end, the present invention provides a unmanned airplane having a plurality of wing portions for generating lifting force on a streamlined gas, and a landing device on a motor shaft having a motor for rotating the propeller at the ends of the wing portions, A motor fixing part for fixing the motor to the end of the motor; A bearing cap rotatably supported by a bearing is provided at an end of a motor shaft of the motor fixed to the motor fixing portion; The bearing cap has a landing portion contacting the ground at a lower end thereof. The motor shaft is rotated at a high speed through the bearing even if the landing portion is in contact with the ground.

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to a motor-

The present invention relates to a unmanned airplane having a landing device on a motor shaft. More particularly, the present invention relates to a unmanned airplane having a motor shaft and a motor for rotating the propeller at the end of the wing, And a landing device capable of maintaining a stationary state regardless of the rotation of the motor is vertically installed at an end of the motor shaft. The wing portions serve as a structure for installing the landing device while helping the flight, To a motorized shaft having a landing device.

In recent years, the need for unmanned aerial vehicles is increasing in environments where people can not work. Unmanned aerial vehicles (UAVs) are increasingly needed to provide information on enemy cloaking in aerial image acquisition, aerial photographing, power line inspection or battlefield situations in disaster / disaster areas that are difficult to access, or to carry out reconnaissance missions and surveillance missions through UAV . Also, since the unmanned airplane, which is manufactured in small size, can be easily operated by the general public, its utilization as a playground is gradually increasing.

A conventional unmanned airplane has been disclosed in Japanese Patent No. 1366208. This allows the user to conveniently move, assemble, and disassemble the air vehicle, and the first and second fixing members formed on the lower fixing member can be easily and easily assembled and disassembled while firmly fixing the body portion and the lower fixing portion. It is possible to minimize the shock transmitted from the weight of the airplane when the airplane landing, and firmly fix the landing device to the lower fixing unit, thereby further preventing the airplane from being shaken or distorted.

Domestic patent no. 101437323 is also a unmanned airplane, which promptly injects into a fire scene where firefighters can not enter, accurately grasping the fire situation, and equipped with fire fighting equipment to suppress the fire early.

However, these conventional patents have disadvantages in that the structure is complicated and the weight of the gas increases because a separate arm must be separately installed on the base for the landing device. Also, during the flight, there is a problem that the apparatus for folding up the arm for the landing device is not provided so as to obstruct the flight. Conventional unmanned aerial vehicles do not have separate wings, so they fly only by the force of a propeller, which causes a problem that a gas crashes when the propeller is stopped.

SUMMARY OF THE INVENTION The present invention has been made in view of the above problems, and it is an object of the present invention to provide a wind turbine generator having left and right wings formed on both sides of a base and a tail blade formed at the rear, A landing device capable of maintaining a stationary state regardless of the rotation of the motor is vertically installed at the end of the motor shaft so that the wing portions serve as a structure for installing the landing device while helping the flight, And an unmanned airplane having a landing device on a motor shaft that simplifies the structure because a landing device is installed on the shaft.

To this end, the present invention provides a unmanned airplane comprising a plurality of wing portions for generating lifting force on a streamlined gas, and a landing device on a motor shaft having a motor for rotating the propeller at the ends of the wing portions, A motor fixing part for fixing the motor to the end of the motor; A bearing cap rotatably supported by a bearing is provided at an end of a motor shaft of the motor fixed to the motor fixing portion; The bearing cap has a landing portion contacting the ground at a lower end thereof. The motor shaft is rotated at a high speed through the bearing even if the landing portion is in contact with the ground.

According to the present invention, the left and right wings are provided on both sides of the UAV, and the tail wing is provided on the rear side. These wings generate lift during flight, so even if the output of the motor is adjusted weakly, it is possible to reduce the battery consumption by preventing the fall of the gas. Further, since the motor fixing portion for fixing the motor is provided at the end of each wing portion, a separate arm for mounting the motor is not required.

The end of each of the motor shafts is provided with a landing device that maintains a stop state regardless of the rotation of the motor. The landing device is connected to the motor shaft via a bearing, wherein the inner ring of the bearing is fixed to the motor shaft and the outer ring is fixed to the landing device. Therefore, even if the landing device is placed on the ground and is in the stationary state, the motor shaft is connected to the inner ring and separated from the landing device, so that the operation of the motor is not hindered.

In the unmanned airplane of the embodiment of the present invention, the motors are mounted on the left and right wing portions and the tail wing portions on both sides of the base body, and the landing device is provided at the lower portion of each motor. Therefore, the structure is simple, And the cost of producing airplanes can be reduced.

1 is a perspective view of an unmanned airplane of the embodiment of the present invention;
2 is an exploded perspective view of a landing apparatus according to an embodiment of the present invention.
3 is an assembled cross-sectional view of a landing apparatus according to an embodiment of the present invention
4 is a partially enlarged cross-sectional view of a landing apparatus according to an embodiment of the present invention
5 is a side view of the unmanned airplane of the embodiment of the present invention

As shown in FIGS. 1 to 5, the unmanned airplane of the present invention includes left and right wings 11 on both sides of a streamlined base 10, and a tail wing 12 at the rear of the base . The left and right wing portions 11 and the tail wing 12 have a slope t tilted upward by about 20 degrees in a landing state where the base 10 is placed on the ground and the cross section is formed in a streamline shape so as to receive lift. Therefore, during the flight, the tilted left and right wing portions 11 are lifted and placed horizontally, wherein the base 10 is tilted forward by about 20 degrees and the rear portion is in a state of being backward. Since the propeller 21 to be described later lies horizontally with respect to the base 10, the base 10 must be tilted by about 20 degrees in order to fly by the propelling force of the propeller 21.

A motor fixing portion 13 for fixing the motor 20 is provided on the end of each of the wings 11 and 12 in a disk shape. Two motors 20 are fixed to the upper and lower sides of the motor fixing portion 13, respectively. Motor brackets 23 are provided on the underside of each motor 20 to fix the motor 20 and the motor brackets 23 are formed of double tubes of an inner tube 24 and an outer tube 25, And the tube 24 is fitted into the outer tube 25. And the outer tube 25 is fitted in the passage 14 punctured to the center of the motor fixing portion 13. A fixing hole 15 is formed at the side of the motor fixing portion 13 so that the fixing hole 15 is formed in the inner tube 24 and the outer tube 25.

Therefore, when the safety pin or fixing bolt is fastened to the fixing hole 15 with the motor bracket 23 in the motor fixing portion 13, the inner pipe 24 and the outer pipe 25 are fixed and the motor 20 And is fastened to the motor fixing portion 13.

A propeller 21 is provided on the motor shaft 22 of the motor 20 and a landing device is provided on the end of the motor shaft 22. The landing apparatus of the embodiment of the present invention is provided with a pair of bearings 32 on the upper and lower sides of the outer periphery of the shaft section 33. The bearing section 33 is fixed to the outer periphery of the motor shaft 22, At this time, the inner ring 34 of the bearing 32 is fixedly secured to the axial extension 33 and the bearing 35 is covered with a bearing cap 31 to cover the bearing 32. The inner ring 34 of the bearing 32 located at the lower end is engaged with the bearing bolt 36 in the inside of the axial extension portion 33 and is engaged with the bearing cap 31. At this time, And does not fall out from the holding portion 33. Also, a cone-shaped landing portion 30 contacting the ground is coupled to the open lower end of the bearing cap 31.

Since the unmanned airplane of the embodiment of the present invention configured as described above has the left and right wings 11 on both sides of the base 10 and the tail wing 12 on the rear side of the base 10, 11) 12, the fall of the base 10 is prevented even if the output of the motor 20 is weakened, so that battery consumption can be reduced.

Further, since the motor 20 for rotating the propeller 21 is mounted on the end of each of the wings 11 and 12, a separate arm for mounting the motor is unnecessary, so that the weight can be reduced. To this end, a disk-shaped motor fixing part 13 is provided at the ends of the wing parts 11 and 12, and in order to mount a pair of motors 20 on the upper and lower sides of the motor fixing part 13, A motor bracket 23 is fixed to the motor bracket 23. The motor bracket 23 is provided with an inner tube 24 and an outer tube 25 fitted to each other. The outer tube 25 is inserted into the passage 14 punctured to the center of the motor fixing portion 13 and is fixed to the inner tube 24, the outer tube 25 and the fixing hole 15 When the safety pin or the fixing bolt is fastened to the fixing hole 15, a pair of motors 20 are mounted on the motor fixing portion 13, simplifying the structure.

The motor shaft 22 is provided with a shaft extension portion 33 for mounting a landing device at the end of each motor shaft 22 and a bearing 32 is provided on the outer circumference of the shaft shaft portion 33, The cap 31 is fixed. The bearing cap 31 and the landing portion 30 are fixed to the outer ring 35 of the bearing 32. The bearing cap 31 and the landing portion 30 are fixed to the outer ring 35 of the bearing 32, The motor shaft 22 is prevented from rotating at a high speed irrespective of the landing portion 30 even if the landing portion 30 is brought into a stationary state because it is fixed to the shaft end portion 33. [

Accordingly, since the motor 20 and the landing unit 30 can be installed at the ends of the wings 11 and 12, the structure is simplified.

10: gas 11: right and left wing parts
12: tail wing 13: motor fixing part
14: passage 15: fixing hole
20: motor 21: propeller
22: motor shaft 23: motor bracket
24: inner tube 25: outer tube
30: landing part 31: bearing cap
32: bearing 33:
34: inner ring 35: outer ring

Claims

A motor for rotating a propeller is provided at an end of each of the wings and a motor shaft of the motor is provided with means for landing on the ground, In a UAV having a device,
And a motor fixing unit for fixing a pair of motors to the upper and lower sides is provided at the end of each of the wings, wherein each of the motors includes a motor bracket having an inner tube and an outer tube fitted to each other, A pair of motors fixed to upper and lower sides of the motor fixing part by fixing holes formed on the side surfaces of the motor fixing part and passing through the outer pipe and the inner pipe;
Wherein the lower motor is provided with a bearing cap rotatably supported on a motor shaft end coupled with a propeller through a bearing;
Wherein the bearing cap has a landing portion contacting the ground. The landing portion contacts the ground so that the motor shaft is rotated at a high speed through the bearing even though the bearing cap is in a stationary state together with the bearing cap. Unmanned airplane.

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