JP6245566B1 - Drone flight safety frame - Google Patents

Abstract

A light and high strength flight safety frame for a drone (small unmanned aerial vehicle) is provided. A roof frame (R) that covers the drone (A) from above and a wall frame (W) that is connected to the lower end of the roof frame and totally surrounds the propeller (13) of the drone from the lateral direction. And a plurality of horizontal cross beams that are horizontally bridged partially in the middle of the wall frame so as to approach the tip of the arm (11) projecting in the radial direction of the airframe (10) in the drone (20), and a plurality of support legs (28) projecting from different middles of the wall frame toward the drone grounding leg (12), the roof frame, the wall frame, the cross beam, and the support Propeller rotation drive motor cover case (14) where the legs are all made of fiber reinforced plastic tubing, and the cross beam is on the tip of the arm projecting in the radial direction of the drone. It was set to overhang the distal end of the support leg are respectively mounted using the ground leg of the drone. [Selection] Figure 1

Description

  The present invention relates to a light and high strength flight safety frame for drones (small unmanned aerial vehicles).

  Currently, small unmanned aerial vehicles called drones are not only used for photography as personal hobbies, but also for inspecting infrastructure equipment, surveying topography, spraying agricultural chemicals, tracking suspicious vehicles, transporting luggage, and transporters. Is widely used for searching for information and collecting various information.

  In any case, the drone, for example, indoors such as a flight range or gymnasium made up of enclosure nets, crashed due to control mistakes during outdoor flight, entangled in the enclosure nets, etc. The aircraft, the arm that projects from now on, the grounding leg, especially the propeller, may be damaged, and other things may be damaged, and other people may be harmed. We must ensure safety.

  Patent Documents 1 and 2 disclose propeller guards that are measures against such problems.

Design Registration No. 1565537 Design Registration No. 1552346

  However, the propeller guard described in Patent Document 1 is composed of a fan-shaped frame when viewed from the flat / bottom surface, and each of the propellers is only partially surrounded from the lateral direction (circumferential direction) by the arc surface. The upper surfaces of the propellers and the aircraft are not covered at all.

  Therefore, when the drone rises in the vertical direction, the aircraft and each propeller collide with the indoor ceiling, outdoor bridge, etc., and are inevitably damaged.

  Further, the propeller guard composed of the fan-shaped frame is used for a propeller rotation drive motor existing at the tip of the arm projecting radially from the airframe or in the tip as a scattered distribution state surrounding each of the propellers in pieces. The main part of the fan shape remains attached to the cover case.

  In other words, because the propeller guard is not a large continuous unit that surrounds multiple propellers as a whole, it is easy for the individual props to swing or bend under the influence of the wind during the drone flight. The stability of the mounting state and the balance of the flight posture are inferior.

  Furthermore, the material of the propeller guard is not described in Patent Document 1. If the fan-shaped frame is made of aluminum or other non-ferrous metal, even if it is light, it will be a metal and will drastically increase the weight of the drone.

  On the other hand, since the propeller guard described in Patent Document 2 is a continuous integrated product that surrounds a plurality of propellers as a whole, the individual swinging movements and deflections of the propeller guard described in Patent Document 1 are considerably suppressed. It can be said that even the propeller guard of the continuously integrated product is similar to Patent Document 1 with respect to the tip of the arm projecting radially from the drone body or the cover case for the propeller rotation drive motor existing at the tip. It is only attached as a scattered distribution state.

  Moreover, although the material of the propeller guard is not described in Patent Document 2, assuming that this is an integrally molded product from general-purpose resin or engineering plastic, each of the propellers in the lateral direction (circle) Since the circular arc surface surrounding from the (circumferential direction) forms a plate-like wall surface, it is easy to receive air resistance during the flight of the drone, and it is easy to bend and swing by being blown by the wind from below. However, the stability of the mounted state is still inferior, and the drone size cannot be changed.

  Furthermore, in the propeller guard described in Patent Document 2, the propeller that is in the downward direction from the tip of the arm is not covered at all from below, and further, the upper surface of the airframe is not covered at all. Therefore, when the drone moves up or down along the vertical direction, the upper surface of the aircraft or the lower surface of the propeller collides with an indoor ceiling or floor, an outdoor bridge, a building, or the like, and there is a problem that the drone is still easily damaged.

  The present invention aims to drastically solve such problems, and in order to achieve the object, in claim 1, a drone is connected to a roof frame that covers the drone from above and a lower end of the roof frame. It was laid in a partially bridged state in the middle of the wall frame so as to approach the wall frame that totally surrounds the propeller of the aircraft and the tip of the arm projecting in the radial direction of the drone in the drone A plurality of horizontal cross beams, and a plurality of support legs protruding from different middles of the wall frame toward the grounding leg of the drone,

  The roof frame and wall frame, cross beam and support legs are all made of carbon fiber reinforced plastic, glass fiber reinforced plastic, other fiber reinforced plastic pipes,

  To the cover case for the propeller rotation drive motor existing at the tip of the arm that projects in the radial direction of the airframe in the drone or the tip of the cross beam, the projecting tip of the support leg to the grounding leg of the drone, It is characterized in that the relationship is set so that each of them is used.

  Further, according to claim 2, the roof frame is assembled from a plurality of straight pipe materials and curved pipe materials made of fiber reinforced plastic into a cross-shaped shape in plan view or other overall radial symmetry type and an arch shape in side view. It is characterized by that.

  In claim 3, the wall frame is at least a pair of upper and lower parallel when viewed from the lateral direction, both of which are shaped into the same circular shape in plan view or the same regular polygon in plan view in which each corner portion forms an arc shape,

  The rotation region of the propeller in the drone is surrounded from the lateral direction by using at least a pair of upper and lower sides of the wall frame as a flat wall surface having a constant band width.

  In claim 4, the wall frame is formed as at least a pair of upper and lower parallel in side view, both of which are shaped into the same circular shape in plan view or the same regular polygon in plan view in which each corner portion forms an arc shape,

  The roof frame is shaped into an overall radial symmetry in plan view and an arch in side view,

  Assembling the lower end of the roof frame to at least a pair of upper and lower wall frames in a three-dimensional crossover state,

  In the middle of the upper wall frame or the lower wall frame, a plurality of horizontal cross beams are assembled in a bridging state distributed as an overall radial symmetry type,

  The upper end of the support leg that projects obliquely toward the grounding leg of the drone is assembled in the middle of the lower wall frame.

  In claim 5, the wall frame is assembled from a plurality of straight pipe members made of fiber reinforced plastic and a bent pipe member into a regular polygon in plan view in which each corner portion forms an arc shape,

  The horizontal cross beams fixed and bridged to each corner of the wall frame function as a corner reinforcement brace for straight pipes.

  In the drone, the tip of the arm projecting in the radial direction of the fuselage or the clamping clamp for attaching to the propeller rotation drive motor cover case existing at the tip of the drone was slidably inserted into the corner reinforcement brace. It is characterized by that.

  In claim 6, the wall frame is assembled into a circular shape in plan view from a plurality of bent pipe members made of fiber reinforced plastic,

  In addition to functioning as a partial reinforcement brace of straight pipes, multiple horizontal cross beams fixed and bridged in a bridging state distributed in an overall radial symmetry type to the wall frame,

  In the drone, the tip of the arm projecting in the radial direction of the fuselage or the clamping clamp for attaching to the propeller rotation drive motor cover case existing at the tip of the drone was slidably inserted into the partial reinforcing brace. It is characterized by that.

  According to a seventh aspect of the present invention, the support legs are all made of fiber reinforced plastic straight pipe material, and a clamping clamp for attaching to the grounding leg of the drone is inserted and fixed to the projecting tip of the support leg.

  Further, the present invention is characterized in that the roof frame and the wall frame are used as a frame, or the roof frame, the wall frame, and the support leg are used as a frame, and the cover net is attached to the entire frame in an enclosed state.

According to the structure of Claim 1, there exists an effect which can solve all the problems of the prior art described at the beginning. In other words , not only the drone's propeller is entirely surrounded by the wall frame from the lateral direction, but also the drone's fuselage and the whole including the multiple arms projecting in the radial direction are covered with the roof frame from above. As a result, any part of the drone can be protected against collision with other objects and damaged, entangled in the enclosure of the flight range, and on the other hand, damage to other objects and danger to others. Excellent effect (safety).

  In addition, even if the flight safety frame surrounds the drone as a whole, the roof frame, wall frame, cross beam and support legs that assemble the drone are all light and high strength carbon fiber reinforced plastic ( Since it is made of a fiber reinforced plastic (FRP) tube material such as CFRP), the drone does not increase in weight or power consumption, and as a result, it has a low air resistance, so that a long flight can be performed smoothly.

  Further, a propeller rotation drive motor cover in which a plurality of horizontal cross beams laid across the wall frame in the middle of the wall frame project in the radial direction from the drone body or at the front end thereof. Not only are each fixed and attached to the case, but also multiple support legs that protrude downward from different middles of the wall frame are each fixed and attached to the grounding leg of the drone. It has excellent mounting stability and has the effect of allowing the drone to fly in a well-balanced manner.

  In that case, if the structure of Claim 2 is employ | adopted, the assembly strength and protective effect (safety) of a roof frame will improve further.

  If the configuration of claim 3 is adopted, at least a pair of the upper and lower sides of the wall frame is formed as a flat wall surface having a constant width, and thereby, the rotation area of the propeller can be surrounded more safely from the lateral direction, Even if the flat wall surface of the wall frame collides with another object, it is possible to prevent the drone from being inclined with the flight safety frame.

  If the configuration of claim 4 is adopted, at least a pair of upper and lower wall frames and the lower end portion of the roof frame are assembled in a three-dimensional crossing state, and a plurality of them are provided in the middle of the upper or lower wall frame. The horizontal cross beam is assembled as a bridge that is distributed in an overall radial symmetry in plan view, and the upper end of the support leg is assembled in the middle of the lower wall frame. Therefore, the assembled state having a high fixing strength can be obtained without fear of deformation or swinging.

  If the structure of Claim 5 or Claim 6 is employ | adopted, several horizontal cross beam fixedly mounted in the bridging state distributed to the wall frame in the whole radiation symmetrical type of planar view will be made into the wall frame. In addition to being able to function as a part (corner part) reinforcing brace, the cross beam is also used as a sliding rail of a clamping clamp, so it exists at the tip of the arm that projects radially from the drone body or at the tip By sliding the clamping clamp for attaching to the propeller rotation drive motor cover case along its cross beam, it can be attached and fixed to the tip of the arm or the cover case in an accurate positioning adjustment state. , Response to drone changes will expand.

  If the structure of Claim 7 is employ | adopted, the support leg of a flight safety frame will be easily and reliably attached and fixed to the grounding leg of a drone by the clamping clamp currently fixed to the protrusion front-end | tip part (lower end part) of the support leg. It helps to stabilize the mounting state.

  Furthermore, if the structure of claim 8 is adopted, there is a risk that a finger touches the propeller that rotates at high speed without unnecessarily increasing the weight by attaching the cover net using the framework of the flight safety frame. Can be surely prevented.

It is a perspective view which shows the use condition of the flight safety frame for drones which concerns on basic embodiment of this invention. It is a top view of FIG. It is a front view of FIG. It is a top view which extracts and shows a drone. FIG. 5 is a front view of FIG. 4. FIG. 6 is a side view of FIG. 5. It is a top view which shows the assembly state of a flight safety frame. FIG. 8 is a front view of FIG. 7. It is a front view which extracts and shows a curved pipe material. It is a front view which extracts and shows a straight pipe material. It is the partial expanded sectional view of the connection state which inserted the straight pipe material and the curved pipe material, and was unified. It is a slope view which extracts and shows a cross-shaped (four-way) pipe joint. It is a perspective view which extracts and shows an inverted T-shaped (three-way) pipe joint. It is a slope view which extracts and shows a spacer. It is a perspective view which extracts and shows a 1st three-way pipe joint. It is a slope view which extracts and shows a pair of left and right special second three-way pipe joints (an irregular four-way pipe joint). It is a perspective view which extracts and shows the clamping clamp for radiation arms. It is a perspective view which extracts and shows the clamping clamp for grounding legs. It is the elements on larger scale of the state which clamped and fixed the clamping clamp for radiation arms to the front-end | tip part of the radiation arm in a drone. FIG. 20 is a sectional view taken along line 20-20 in FIG. 19. It is the elements on larger scale of the state which clamped and clamped the clamp for grounding legs to the grounding leg of a drone. FIG. 22 is a cross-sectional view taken along line 22-22 of FIG. FIG. 3 is a plan view corresponding to FIG. 2 in a state where a cover net is attached to the framework of the flight safety frame. It is a front view of FIG. It is a top view corresponding to FIG. 2 which shows the deformation | transformation embodiment of a flight safety frame. FIG. 26 is a front view of FIG. 25.

  The specific configuration of the present invention will be described below with reference to the drawings. FIGS. 1 to 3 show the drone flight safety frame (F) according to the basic embodiment of the present invention to a drone (small unmanned aerial vehicle) (A). The attached usage state is shown.

  The drone (A), as extracted and shown in FIGS. 4 to 6, has a body (10) and a plurality of (4 in the illustrated example) projecting from the body (10) in an overall radial symmetry type. Main arm (11), a plurality of grounding legs (stands) (12) that project downward from the airframe (10), and propellers (rotor blades) that are pivotally supported at the tip of each arm (11) ( 13), and a motor (not shown) which is a rotational drive source of each propeller (13) is in a covered state by a cover case (14) fixed to the tip of the arm (11).

  In the case of the illustrated example, the grounding legs (12) of the drone (A) are installed in parallel as a pair facing each other in a substantially U shape in side view, but at least three of the grounding legs (12) having a simple bar shape are arranged. It may be installed in a scattered distribution state. Moreover, although each propeller (13) is installed in the upper surface of the said arm (11), it may be installed in the reverse lower surface of the arm (11). The surveillance camera, LED light, and other devices mounted on the drone (A) body (10) are not shown.

  The drone flight safety frame (F) includes carbon fiber reinforced plastic (CFRP), glass fiber reinforced plastic (GFRP), a hybrid of both plastics, aramid fiber reinforced plastic (AFRP), other various fiber reinforced plastics (FRP), Particularly preferably, a plurality of straight pipe materials (Sm) and curved pipe materials (Cm) each having the same thickness (for example, outer diameter: about 8 mm, inner diameter: about 6 mm) made of the lightest and highest strength carbon fiber reinforced plastic are used. Thus, the drone (A) as shown in FIGS.

  As a framework method, as shown in FIGS. 9 to 11, a narrow insertion joint pipe (15) is bonded and integrated at both ends of the curved pipe material (Cm), and the end of the curved pipe material (Cm) is obtained. It is desirable that the insertion joint pipe (15) protruding from the part is inserted into the end of the straight pipe (Sm) so as to be freely inserted and removed. Using the curved pipe material (Cm) of the same length, changing only the length of the straight pipe material (Sm), and inserting it into the curved pipe material (Cm) so that it can be freely inserted and removed. This is because the size of the frame in the flight safety frame (F) can be easily changed and adjusted according to the change in size.

  The frame state of the drone flight safety frame (F) will be described in detail with reference to FIGS. 7 to 18. (R) is a roof frame of the flight safety frame (F), and a plurality of (2 to 3 in the illustrated example). The straight pipe material (Sm1) and a plurality (four in the illustrated example) of curved pipe materials (Cm1) are inserted into the straight pipe material (Sm1) and the curved pipe materials (Cm1). It is assembled in a cross-shaped shape in plan view covering (A) from above and in an arch shape in side view. (16) is a cross-shaped (four-way) pipe joint that fixes the straight pipe members (Sm1) to each other in a plane crossing state at the apex of the roof frame (R).

  In that case, the central part of the top surface where the straight pipe materials (Sm1) of the roof frame (R) are orthogonal to each other via the cross-shaped (four-way) pipe joint (16) is a flat roof surface having a constant diameter (d), For example, by making surface contact with an indoor ceiling surface, the flight safety frame (F) and the drone (A) are kept from being inclined as much as possible. The roof frame (R) has a height sufficient to secure an antenna escape space (dome space) of the drone (A).

  Similarly, (W) is a wall frame that entirely surrounds the propeller (13) of the drone (A) from the lateral direction (peripheral direction), and includes a plurality of straight pipe materials (Sm2) and curved pipe materials (Cm2). (4 in the example), each corner portion forms a circular arc shape in the curved pipe material (Cm2) by integrating the straight pipe material (Sm2) and the curved pipe material (Cm2). It is assembled into a regular polygon (square in the example).

  Moreover, the wall frames (W) are arranged in parallel in a side view as a pair of upper and lower sides having the same planar shape and size, and the horizontal upper wall frame (WA) and the lower wall frame (WB) For example, as a flat wall surface having a constant band width (h) in which the upper and lower surfaces are in surface contact with the indoor and outdoor wall surfaces, the rotation area of the propeller (13) in the drone (A) is covered from the lateral direction, and the flight safety frame Keep the drone (A) as tilted as possible. (17) is a plurality (four in the illustrated example) of spacers that are inserted and fixed vertically between the upper and lower walls of both wall frames (WA) and (WB).

  The upper wall frame (WA) and the lower wall wall frame (WB) forming the regular polygon in plan view and the lower end portion of the roof frame (R) forming the cross shape in plan view are side surfaces. It is assembled in a three-dimensional vertical and horizontal cross state through a pair of upper and lower parts of a cross-shaped (four-way) pipe joint (18) and an inverted T-shaped (three-way) pipe joint (19).

  In the case of the illustrated example, the spacer (17) is bonded and integrated between the curved pipe members (Cm2) forming the corners of the upper wall frame (WA) and the lower wall frame (WB) in an interleaved state. On the other hand, the lower end of the curved pipe material (Cm1) in the roof frame (R) to the horizontal straight pipe material (Sm2) parallel to each other, which is in the middle of the upper stage wall frame (WA) and the lower stage wall frame (WB). The lower end of the roof frame (R) is assembled to each corner of the upper wall frame (WA) and the lower wall frame (WB), and the pipe joint (18) ( 19) is assembled in the same three-dimensional crossing state via the pair of upper and lower sides, and the spacer (17) is inserted in the middle of the straight pipe material (Sm2) of the upper wall frame (WA) and the lower wall frame (WB). It may be fixed.

  Further, in the case of the illustrated example, the straight pipe materials (Sm1) and (Sm2) of the roof frame (R) and the wall frame (W) are also used as those having the same length (for example, about 230 mm), and the curved pipe material (Cm1 ) (Cm2) are also used as those having the same length (for example, about 240 mm), and the cross-shaped (four-way) pipe joints (16) (18) of the roof frame (R) and the wall frame (W) In addition to improving the mass production effect by sharing the same size and shape with each other, the length of the straight pipe material (Sm1) (Sm2) is changed to be longer or shorter, and the curved pipe material (Cm1) Depending on the size of the drone (A), the size of the frame in the roof frame (R) and the wall frame (W) of the flight safety frame (F) can be reduced by inserting and detaching (Cm2). Increase or decrease The straight pipe materials (Sm1) and (Sm2) can be used together, the curved pipe materials (Cm1) and (Cm2) can be used together, and the cross-shaped (four-way) pipe joint (16) ( 18) It is not always necessary to adopt a combination of the two.

  (20) Each of the lower wall frames (WB) in the middle of the wall frame (W) so as to approach the tip of the arm (11) projecting in the radial direction of the airframe (10) in the drone (A). A horizontal cross beam (beam) horizontally bridged to a corner portion, made of a single straight pipe material (Sm3), and its first and second ends intersecting in a substantially V shape in plan view. The three-way pipe joints (21) and (22) are assembled in the middle of the straight pipe member (Sm2) of the lower wall frame (WB). Therefore, the cross beam (20) also functions as a corner reinforcing brace of the lower wall frame (WB), and a plurality of them (four in the illustrated example) are distributed in an overall radial symmetry type in a plan view. .

  And the clamping clamp for radiation arms for attaching the lower wall frame (WB) of the drone flight safety frame (F) to the tip of the arm (11) projecting in the radial direction of the airframe (10) in the drone (A) (C1) is slidably inserted in the middle of each cross beam (20) in the lower wall frame (WB), and the clamping clamp (C1) is inserted along each cross beam (20). It can be slid and adjusted so as to correctly correspond to the tip of the arm (11).

  As shown in FIG. 17, the clamping clamp (C1) includes an insertion joint pipe (23) with each cross beam (20), a clamp body (24) that hangs down continuously from this, and a clamp body ( 24) and a separate pedestal (25) that is unevenly fitted, and by clamping the unevenness between the clamp body (24) and the pedestal (25), the tip of the arm (11) is sandwiched from above and below. The clamping state is fixed by a vertical through bolt (26) and its fastening nut (27).

  Of the first and third three-way pipe joints (21) and (22) for assembling both ends of each cross beam (20) to the lower wall frame (WB), one of the second three-way pipe joints (22) is shown in the figure. 16 (b) and (b) are prepared as a pair of left and right special anomalous four-way pipe joints (left-handed and right-handed) (22L) and (22R). A pair of left and right support legs (28) are projected in parallel downward from the irregular four-way pipe joints (22L) and (22R) toward the grounding leg (12) of the drone (A).

  Each support leg (28) is also made of a single straight pipe (Sm4), and a grounding leg clamping clamp (C2) for attaching to the grounding leg (12) of the drone (A) is projected from the support leg (28). It is inserted and fixed at the tip (lower end).

  The grounding leg clamping clamp (C2), as extracted and shown in FIG. 18, is an insertion joint pipe (29) to the support leg (28) and a clamp body (30) continuously projecting from the lower end thereof. And a separate pressing plate (31) facing this, and the grounding leg (12) of the drone (A) is clamped from the lateral direction by the pressing plate (31) and the clamp body (30), and the clamping state is It is fixed by a pair of parallel through bolts (32) and its fastening nut (33).

  In the illustrated example, the wall frame (W) is installed in parallel as two stages of the upper wall frame (WA) and the lower wall frame (WB), and the curved pipe material (Cm2) of the lower wall frame (WB) is used. The cross beam (20) is assembled to each corner portion, and the support leg (28) is assembled in the middle of the straight wall material (Sm2) of the lower wall frame (WB). For example, the propeller (13) of the drone (A) is assembled. ) Is installed on the lower surface of the arm (11) projecting in the radial direction of the fuselage (10), the cross beam (20) into which the clamping clamp for the radiation arm (C1) is inserted and fitted, You may assemble | attach to each corner part of an upper stage wall frame (WA).

  Further, the radiating arm clamping clamp (C1) inserted and fitted into each cross beam (20) is clamped to the tip of the arm (11) projecting radially from the body (10) of the drone (A). However, since there is a cover case (14) of a motor (not shown) for rotationally driving the propeller (13) on the upper or lower surface of the tip of the arm (11), the above-mentioned clamping clamp for the radiation arm If (C1) is replaced with the cover case clamping clamp (C1), the cover case clamping clamp (C1) may be set so as to be clamped from the lateral direction to the cover case (14) on the drone (A) side. good.

  Further, in the case of the illustrated example, in addition to the substantially V-shape on the same plane as shown in FIG. 16, a common special irregular four-way pipe joint (22L) (22L), which is a continuous integrated product that also turns obliquely downward from the plane. 22R), one end of each cross beam (20) and the upper end of each support leg (28) are assembled together in the middle of the lower wall frame (WB), thereby improving the assembly strength. The first three-way pipe joint is attached to the lower wall frame (WB) by the first three-way pipe joint (21) that intersects both ends of each cross beam (20) in a substantially V shape in plan view. An obliquely downward T-shaped (three-way) pipe joint (not shown) that is independent from (21) is slidably inserted into the lower wall frame (WB), and the T-shaped (three-way) ) By assembling the upper end of the support leg (28) to the pipe joint, The grounding leg clamping clamp support legs (28) (C2) according to the distribution position of the ground leg (12) in the drone (A), which the may be set so as to be positioned adjusted so as to correspond coincide.

  The wall frame (W) is not limited to a pair of upper and lower two stages, but only one stage. Furthermore, it may be installed in parallel as upper, middle, and lower three stages by adding one stage.

  The spacer (17), various pipe joints (16), (18), (19), (21), (22L), and (22R), the radiating arm clamping clamp (C1), and the grounding leg clamping clamp (C2) are also described above. However, it may be made from ABS resin, polycarbonate resin, polyacetal resin, or other hard synthetic resin having impact resistance (including engineering plastic).

  The drone flight safety frame (F) according to the basic embodiment of the present invention has the above-described configuration, and when used, the flight safety frame (F) in an assembled state as shown in FIGS. A radiating arm clamping clamp (C1) on each cross beam (20) that also functions as a corner reinforcement brace of the lower wall frame (WB) in the wall frame (W) by covering the drone (A) from above Is slid along the cross beam (20) and positioned so as to correspond to the tip of the arm (11) projecting radially from the airframe (10) of the drone (A). The clamping clamp (C1) is attached and fixed to the distal end portion of).

  That is, as shown in FIGS. 19 and 20, the clamp body (24) and the pedestal (25) of the radiating arm clamping clamp (C1) are engaged with each other so that the tip of the arm (11) is moved up and down. It is clamped from the direction, and the clamped state is fixed by the through bolt (26) and the fastening nut (27). The reference numeral (P1) in FIG. 2 indicates fixed points at four locations in which the points are distributed.

  Further, the grounding leg clamping clamp (C2) of each support leg (28) extending obliquely downward from the middle of the lower wall frame (WB) is attached and fixed to the grounding leg (12) of the drone (A). As is apparent from FIGS. 21 and 22 showing the state extracted, the grounding leg (12) of the drone (A) is formed by the clamp body (30) and the pressing plate (31) of the grounding leg clamping clamp (C2). Is fixed by a pair of through bolts (32) and their fastening nuts (33). Reference numeral (P2) in FIG. 2 indicates fixed points at four points that are distributed separately from the fixed point (P1).

  In this way, the flight safety frame (F) is transferred to the drone (A), the fixing point (P1) of the radiating arm clamping clamp (C1) to the tip of the arm (11) in the drone (A), and the drone as well. At a total of eight locations distributed with the fixing points (P2) of the grounding leg clamping clamps (C2) with respect to the grounding legs (28) of (A), they are attached to the entire surrounding state as shown in FIGS. The drone (A) may be allowed to fly outside, including indoors such as a gymnasium and a flight practice field composed of an enclosure net.

  The flight safety frame (F) is made of light and high-strength fiber reinforced plastic (FRP), most preferably carbon fiber reinforced plastic (CFRP) tubing (straight and curved tubing). ) Does not increase the power consumption or power consumption, and is not subject to air resistance more than the plate material. As a result, the drone (A) can fly smoothly for as long as possible.

Further, the propeller (13) of the drone (A) is not only surrounded by the upper wall frame (WA) and the lower wall frame (WB) from the lateral direction (periphery direction) but also the airframe (10 ) And the plurality of arms (11) are covered with a roof frame (R) from above, so that the propeller (13) of the drone (A) as well as the airframe (10) and the projecting from this The arm (11) is superior in that it does not cause damage by collision with other objects during flight, entanglement with the enclosure net of the driving range, or damage to other objects or danger to others. The protective effect (safety) can be obtained.

  Further, even when the load of the roof frame (R) is applied to the flight safety frame (F), the support leg (28) attached and fixed to the grounding leg (12) of the drone (A) has its wall frame. Since (W) is supported in a stretched state from below, there is no risk of inadvertent bending and deformation, or vibration due to the influence of the wind, and always ensures a stable mounting state and balance between flight postures. be able to.

  In any case, since the flight safety frame (F) surrounds the drone (A) as a whole, using the roof frame (R) and the wall frame (W), which are the framework, By attaching the cover net (34) to the surrounding state as shown in FIGS. 23 and 24, it is possible to prevent the danger of the fingers touching the propeller (13) rotating at high speed of the drone (A). For that purpose, the cover net (34) may be attached to the entire frame including the support frame (28) in addition to the roof frame (R) and the wall frame (W).

  Next, FIGS. 25 and 26 show a modified embodiment corresponding to FIGS. 1 to 3, and as will be apparent, the roof frame (R) of the drone flight safety frame (F) has the above cross shape at the apex. By adopting an eight-way pipe joint (35) or a six-way pipe joint (not shown) in place of the (four-way) pipe joint (16), an overall fine radial symmetric frame in plan view may be used. Forming the roof frame (R) in a arch shape in a side view is the same as in the basic embodiment.

  Similarly, regardless of whether the wall frame (W) of the flight safety frame (F) is in one or three stages, the frame is shaped into the same circular shape in plan view, and a plurality of ( In the illustrated example, four horizontal cross beams (20) may be fixedly mounted on the wall frame (W) in a bridging state distributed in an overall radial symmetry type in plan view.

  Then, the radiating arm clamping clamp (C1) is also slidably inserted and fitted into the middle of each cross beam (20) serving as a partial reinforcing brace of the wall frame (W). Other configurations and usages are substantially the same as those of the basic embodiment shown in FIGS. 1 to 22, and therefore, only the same reference numerals as those shown in FIGS. Detailed description is omitted.

  In the configuration of the drone flight safety frame (F) according to the modified embodiment, the roof frame (R) is shaped into an arch shape in a side view by a curved pipe material (Cm1), similar to that of the basic embodiment. Since the wall frame (W) is assembled from a plurality of curved pipe members (Cm2) into a circular shape in plan view, the roof frame (R) has a length of only the straight pipe material (Sm1) or the straight pipe material (Sm1). ) And the length of the curved pipe material (Cm1) are changed to be longer or shorter, and the length of the curved pipe material (Cm2) is changed to be longer or shorter with respect to the wall frame (W). Similarly, the size of the frame in the roof frame (R) and wall frame (W) of the flight safety frame (F) is changed to be larger or smaller depending on the size of the drone (A). Can be adjusted, Drone (A) is that obtained the overall surrounding state of.

(10)-Airframe (11)-Arm (12)-Grounding leg (13)-Propeller (14)-Cover case (16) (18)-Cross-shaped (four-way) pipe fitting (17)-Spacer (19)- Inverted T-shaped (three-way) pipe joint (20), cross beam (21), three-way pipe joint (22L) (22R), irregular four-way pipe joint (28), support leg (34), cover net (A), drone (Small unmanned aircraft)
(F) ・ Flight safety frame (C1) ・ Nail clamp for radiation arm (C2) ・ Nail clamp for grounding leg (W) ・ Wall frame (WA) ・ Upper wall frame (WB) ・ Lower wall frame (R) ・ Roof Frame (P1) (P2) · Fixed point (Sm) (Sm1) (Sm2) (Sm3) (Sm4) · Straight pipe material (Cm) (Cm1) (Cm2) (Cm3) (Cm4) · Curved pipe material

Claims (8)

A roof frame that covers the drone from above, a wall frame that is connected to the lower end of the roof frame and totally surrounds the drone's propeller from the lateral direction, and a tip of the arm that projects in the radial direction of the aircraft in the drone A plurality of horizontal cross beams that are horizontally bridged in the middle of the wall frame so as to approach each other, and a plurality of projections that protrude from the different middle of the wall frame toward the grounding leg of the drone. A support leg for the book,
The roof frame and wall frame, cross beam and support legs are all made of carbon fiber reinforced plastic, glass fiber reinforced plastic, other fiber reinforced plastic pipes,
To the cover case for the propeller rotation drive motor existing at the tip of the arm that projects in the radial direction of the airframe in the drone or the tip of the cross beam, the projecting tip of the support leg to the grounding leg of the drone, A drone flight safety frame characterized in that it is set to be used for each installation.   The roof frame is assembled from a plurality of straight pipe materials and curved pipe materials made of fiber reinforced plastic into a cross-shaped shape in plan view or other overall radial symmetry type, and an arch shape in side view. The drone flight safety frame according to claim 1. While forming at least a pair of upper and lower walls parallel to each other when viewed from the lateral direction, both are shaped into the same circular shape in plan view or the same regular polygon in plan view in which each corner portion forms an arc shape,
2. The drone flight safety frame according to claim 1, wherein at least a pair of upper and lower sides of the wall frame is formed as a flat wall surface having a fixed width, and the rotation area of the propeller in the drone is surrounded from the lateral direction. While the wall frame is at least a pair of upper and lower parallel in side view, each of which is shaped into the same circular shape in plan view or the same regular polygon in plan view in which each corner portion forms an arc shape,
The roof frame is shaped into an overall radial symmetry in plan view and an arch in side view,
Assembling the lower end of the roof frame to at least a pair of upper and lower wall frames in a three-dimensional crossover state,
In the middle of the upper wall frame or the lower wall frame, a plurality of horizontal cross beams are assembled in a bridging state distributed as an overall radial symmetry type,
The drone flight safety frame according to claim 1, wherein an upper end portion of a support leg projecting obliquely toward the grounding leg of the drone is assembled in the middle of the lower wall frame. Assembling the wall frame into a regular polygon in plan view, with each corner forming an arc shape, from multiple straight pipe materials and curved pipe materials made of fiber reinforced plastic,
The horizontal cross beams fixed and bridged to each corner of the wall frame function as a corner reinforcement brace for straight pipes.
In the drone, the tip of the arm projecting in the radial direction of the fuselage or the clamping clamp for attaching to the propeller rotation drive motor cover case existing at the tip of the drone was slidably inserted into the corner reinforcement brace. The drone flight safety frame according to claim 1. Assembling the wall frame into a circular shape in plan view from a plurality of bent pipes made of fiber-reinforced plastic,
In addition to functioning as a partial reinforcement brace of straight pipes, multiple horizontal cross beams fixed and bridged in a bridging state distributed in an overall radial symmetry type to the wall frame,
In the drone, the tip of the arm projecting in the radial direction of the fuselage or the clamping clamp for attaching to the propeller rotation drive motor cover case existing at the tip of the drone was slidably inserted into the partial reinforcing brace. The drone flight safety frame according to claim 1.   2. The drone flight safety frame according to claim 1, wherein the supporting legs are made of straight fiber reinforced plastic pipes, and clamping clamps for attaching to the grounding legs of the drone are inserted and fixed to the projecting tips of the supporting legs. .   2. The drone flight according to claim 1, wherein the roof frame and the wall frame are used as a frame, or the roof frame, the wall frame, and the support legs are used as a frame, and the cover net is attached to the entire frame in an enclosed state. Safety frame.

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