JP2015085755A - Radio controlled helicopter - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a radio controlled helicopter capable of preventing a breakage of a rotor and ensuring safety, even when it comes into contact with an obstacle or falls during a flight or during takeoff/landing.SOLUTION: A radio controlled helicopter 10 has a plurality of rotors 12 arranged in an airframe. In the plurality of rotors 12, a guard member 21 is provided in each rotor 12. Each guard member 21 comprises a lateral guard part 22 for surrounding an outer peripheral side of the rotor 12, and a flat guard part 23 for surrounding a top surface side of the rotor 12.

Description

  The present invention relates to a radio controlled helicopter for performing unmanned operations such as aerial photography and transportation of materials.

  2. Description of the Related Art In recent years, there are increasing examples of introducing a small radio control helicopter (wireless helicopter) for carrying out unmanned surveying and monitoring from the air at a construction site or the like, or transporting construction materials such as overhead wires. Such a radio helicopter includes a main body having a receiving unit, a control unit, a battery, and the like, and a rotor for levitating the main body, and is attached with construction materials such as a camera for shooting and an overhead wire. A stand for the purpose is provided. The flight operation and camera operation of the wireless helicopter are performed by a wireless controller including an operation lever, a monitor, and the like.

  Since such a radio helicopter often turns freely or is stationary in the air, as disclosed in Patent Document 1, a plurality of rotors are provided, and a motor provided in each rotor is provided. Many of them are driven. Each of the rotors can be reversely rotated alternately to enable stationary flight (hovering), and can be turned left and right by independently controlling the number of rotations of each rotor.

  Some conventional wireless helicopters have a ring-shaped cover for guarding a rotor on which a blade rotates for mounting safety, or can be mounted. In Patent Document 1, the airframe is formed by members that protect four rotors. Patent Document 2 discloses a protection structure for a rotor blade in an industrial unmanned edge. The unmanned helicopter includes a main rotor and a tail rotor, and a guard portion that protects a blade rotating by the tail rotor is attached to the rear portion of the airframe so as to be movable.

JP 2012-228944 A Japanese Patent Laid-Open No. 10-100998

  In the radio helicopter as described above, since the battery to be mounted is small, in order to lengthen the flight time and flight distance, the number of parts can be reduced such as exposing the blade attached to each rotor. I am trying.

  However, if the blade is left exposed, the blade may be damaged when it touches an obstacle during flight, making it difficult to fly or falling. In particular, there is a risk of colliding with an obstacle such as a wall in a narrow place where the field of view is not clear, such as a tunnel.

  In the blade protection structure disclosed in Patent Document 2, it is possible to guard the rotating peripheral surface of the blade, but the blade rotating surface remains exposed. For this reason, when an obstacle comes into contact with the rotating surface, the blade is damaged, and when it is touched by a person, the safety is insufficient.

  SUMMARY OF THE INVENTION Accordingly, an object of the present invention is to provide a radio controlled helicopter capable of preventing damage to the rotor and ensuring safety even when it touches an obstacle or falls during flight or takeoff and landing. It is.

  In order to solve the above-described problems, the present invention provides a radio-controlled helicopter in which a plurality of rotors are disposed in a fuselage, wherein the plurality of rotors are provided with guard members for each rotor, and each guard member is arranged on the outer periphery of the rotor. And a planar guard portion surrounding at least one of the upper surface side and the lower surface side of the rotor.

  According to the radio control helicopter of the present invention, a guard member can be arranged for each rotor provided in the fuselage, and each guard member is an outer peripheral surface serving as a rotation region of the rotor, and at least one of an upper surface side and a lower surface side. Since one side is guarded, the rotor can be effectively protected from collision of various obstacles during the flight.

  Moreover, when the guard member is formed by a contour portion that becomes a rotation region of the rotor and a net portion provided in the contour portion, the weight is reduced and the wind pressure from the rotor is not hindered.

It is an external view of the airframe of the radio control helicopter according to the present invention. It is an external view of the radio control helicopter which attached the guard member to each rotor of an airframe. It is sectional drawing of the rotor with which the guard member was mounted | worn. It is sectional drawing which shows the example of mounting | wearing of a guard member. It is a perspective view of an integrated guard member. It is a top view of the airframe of the radio control helicopter equipped with the guard member of other forms. It is a perspective view of the integrated guard member corresponding to six rotors.

  Embodiments of a radio controlled helicopter according to the present invention will be described below in detail with reference to the accompanying drawings. The radio control helicopter (hereinafter referred to as radio helicopter) of the present invention flies by radio control, and is attached to a construction site by attaching a camera to a fuselage or a base for carrying materials such as overhead lines. It is configured for the purpose of performing aerial photography and monitoring from above, remote control of materials, etc.

  FIG. 1 shows an external appearance of an airframe 11 that is a basic configuration of a radio helicopter 10. The airframe 11 is formed by a circular airframe main body 13 in which a receiving unit, a control unit, a battery, and the like (not shown) are mounted, and an arm portion 14 extending from the airframe main body 13 in four directions. Yes. Each arm portion 14 is formed with a rotor 12 including a motor 15 disposed at the tip end portion and a blade 16 composed of two blades attached to the motor 15.

  The radio helicopter 10 rotates and rotates each rotor 12 by receiving a radio wave emitted from a controller (not shown) having a transmission unit, an operation unit, and the like by a reception unit provided in the body main body unit 13. Can do. The controller can use a general-purpose personal computer, a portable terminal, etc. in addition to a dedicated product. When a camera is mounted on the main body 13 or each arm 14, the controller is attached to a dedicated controller, a general-purpose portable terminal, or the like. You can check the video from the sky on the monitor. A general-purpose digital camera or a movie camera can be used as the camera, and it is possible to shoot in the range of 360 ° C in the sky by attaching it via a rotating mounting part that can freely change the shooting range. Become. In addition, by providing an actuator in the rotation mounting portion, it is possible to perform activation and zooming operation of the camera while monitoring the monitor with a controller at hand. Further, the machine body 13 can be attached with a base for suspending materials such as construction overhead lines and other transported items.

  As for the flight of the radio helicopter 10, in addition to manual operation by the controller, a GPS is mounted on the control unit provided in the body main body 13 so that the aircraft 11 can fly stably while correcting the tilt of the body 11. be able to. Furthermore, it can also be automatically controlled according to the terrain and the like of the site where it flies.

  In the radio helicopter 10 having the above-described configuration, a characteristic feature of the present invention is that a guard member 21 for protecting the rotation region of the blade 16 is detachably provided to each rotor 12. As shown in FIGS. 2 and 3, the guard member 21 is provided outside the rotation region of the blade 16 included in each rotor 12, and is a ring-shaped side guard portion 22 that covers the rotation radius of the blade 16. And a planar guard portion 23 that covers the upper surface side of the blade 16. The side guard portion 22 guards against an impact from an obstacle when the aircraft 11 is flying horizontally, and the plane guard portion 23 serves to guard an impact from the obstacle when the aircraft 11 is raised or lowered. doing. The lower surface side of the blade 16 is in an open state so as not to hinder the wind pressure associated with the rise of the airframe 11. However, when safety is important when the airframe 11 is lowered, the flat guard is also provided on the lower surface side. Can be provided.

  In the guard member 21 of the present embodiment, in order to reduce air resistance, a contour portion 25 of the side guard portion 22 and the planar guard portion 23 is formed of a resin material, and a linear resin material is formed in the contour portion 25. The net part 26 was formed using The contour portion 25 is formed in a donut shape by an outer peripheral ring 27 along the outer periphery of the blade 16 rotated by the motor 15 and an inner peripheral ring 28 formed concentrically inside the outer peripheral ring 27. Is arranged on the upper surface side of the blade 16. The net part 26 is formed on the surface to be the side guard part 22 and the surface to be the flat guard part 23 of the contour part 25, respectively. In the present embodiment, the side guard portion 22 has a streak pattern that supports the pair of upper and lower outer peripheral rings 27 at a predetermined height, and the planar guard portion 23 supports the outer peripheral ring 27 and the inner peripheral ring 28 in a planar shape. Pattern was used.

  The net part 26 formed on the flat guard part 23 preferably has a reduced number of lines forming a radiation pattern so as not to hinder the wind pressure from the blade 16 which is important when flying. On the other hand, the net portion 26 formed on the side guard portion 22 is not directly subjected to the wind pressure accompanying the rotation of the blade 16, so that each line interval of the streak pattern is set to be narrow or there is no gap. It is also possible to surround the entire surface with a resin material or the like. Thereby, the guard from the obstruction with respect to the side surface direction in horizontal flight can be strengthened.

  FIG. 4 shows a method of attaching the guard member 21 to the rotor 12. When mounting on each rotor 12, positioning is performed so as to cover the blade 16 provided on the rotor 12 from above, and the center portion can be fixed to the arm portion 14 so as to match the motor 15 of each rotor 12. . Further, by providing an engagement ring (not shown) that engages with the outer peripheral surface of the motor 15 at the center of the planar guard 23, the positioning of the rotor 12 and the guard member 21 can be made accurately and easily. .

  In the above embodiment, an example in which the guard member 21 is attached to each rotor 12 has been shown. However, as shown in FIG. 5, four corresponding guard members 21 are arranged in accordance with the arrangement positions of the four rotors 12. It is also possible to use an integral guard member 31 that is base-connected. As a result, the four rotors 12 can be guarded together and can be easily attached to and detached from the airframe 11. Here, a net portion 32 made of a lattice pattern in which a plurality of lines intersect the radiation pattern is formed on the planar guard portion 23 constituting each guard member 21. As a result, the gap between the planar guard portions 32 is narrowed, so that the intrusion of the protruding obstacle can be prevented.

  FIG. 6 shows the net portion 29 formed on the flat guard portion 23 as a mesh pattern. 2 and 5 have a certain effect on a planar obstacle such as a wall. However, since the exposed surface of the blade 16 has a widened area, the tip portion can be a thin projection. When they come into contact with each other or collide with each other, the tip of the guard portion 21 may enter each guard portion 21. In such a case, it is possible to prevent an obstacle with a thin tip such as a tree from entering by making the plane guard portion 23 a fine mesh pattern. In addition to the above, the planar guard portion 23 can be formed in various geometric patterns and pictogram patterns, so that it is possible to form a guard member rich in decorativeness while further ensuring safety.

  Further, by using an elastic or flexible resin material or styrene foam for the side guard part 22, the contour part 25 and the net part 26 constituting the flat guard part 23, when contacting or colliding with an obstacle. Can absorb shocks.

  In the above embodiment, the radio helicopter having four rotors 12 has been described. However, in the configuration in which six rotors are mounted, as shown in FIG. 7, the corresponding six guard members 21 are connected. A body guard member 41 can be used. It is also possible to adopt a configuration corresponding to eight or more rotors. By forming such an integrated guard member, it can be easily and reliably attached to and detached from the airframe having a plurality of rotors. This one-piece guard member can be easily attached to and detached from the fuselage with one touch, so it can fly without a guard member in a wide sky with no obstacles. By attaching a guard member at many sites in many places, it is possible to prevent damage to the rotor and fly safely.

  By disposing a guard member as shown in each of the above embodiments on each rotor 12, damage to the fuselage can be minimized even when there is an obstacle or when there is a steering error. However, a system that senses obstacles in advance and can fly safely while avoiding obstacles can be incorporated into the airframe 11. As such a system, in addition to the GPS function described above, a distance measuring unit capable of measuring the distance from an obstacle by irradiating the body 11 with laser, infrared rays, or the like toward the outside is also possible. It is also possible to detect obstacles in advance by mounting an antenna-like contact sensor on the guard member or the like. According to the distance measuring means, the contact sensor, etc., even in a tunnel where GPS does not function, an obstacle can be detected and the flight can be safely operated.

  As described above, in the radio helicopter according to the present invention, the guard member is detachably attached to each of the plurality of rotors provided in the fuselage, and the guard member includes the outer peripheral surface, the upper surface side, and the lower surface of the rotor. It is configured to guard at least one of the sides. As a result, even in a narrow space such as in the sky or in a tunnel where there are many obstacles such as electric wires and trees, the rotor can be safely flight-controlled while being securely guarded. Moreover, since the said guard member is comprised by the outline part and the ventilation net | network part formed in this outline part, the wind pressure of a rotor required when flying is not inhibited. Furthermore, since the guard member can be selected and mounted in accordance with the number of rotors that are different depending on the type of machine body, it is excellent in maintainability.

10 Radio helicopter (Radio-controlled helicopter)
DESCRIPTION OF SYMBOLS 11 Machine body 12 Rotor 13 Machine body part 14 Arm part 15 Motor 16 Blade 21 Guard member 22 Side guard part 23 Plane guard part 25 Contour part 26 Net part 27 Outer ring 28 Inner ring 29 Net part 31 Integrated guard member 32 Net part 41 Integrated guard member

Claims (6)

In a radio controlled helicopter with multiple rotors on the fuselage,
Each of the plurality of rotors is provided with a guard member for each rotor, and each guard member includes a side guard portion that surrounds the outer peripheral side of the rotor, and a planar guard portion that surrounds at least one of the upper surface side and the lower surface side of the rotor. A radio controlled helicopter characterized by comprising:   The said airframe is provided with the receiving body, the control part, and the airframe main-body part which accommodates a battery, The several arm part which extends radially centering on this airframe main-body part, and to which each said rotor is attached to the front-end | tip. Radio-controlled helicopter.   2. The radio controlled helicopter according to claim 1, wherein the side guard portion and the planar guard portion are formed by a contour portion surrounding a rotation range of the rotor and a net portion having air permeability formed in the contour portion.   The radio control helicopter according to claim 1, wherein the guard member is detachably attached to each rotor.   The radio-controlled helicopter according to claim 1, wherein the guard member is formed of an elastic resin material or foam material.   The radio control helicopter according to claim 1, wherein a plurality of the guard members are connected in accordance with the arrangement of the rotor.

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