Unmanned aerial vehicle football driven by brushless motor

Abstract

The utility model relates to the field of unmanned aerial vehicle footballs, in particular to an unmanned aerial vehicle football driven by a brushless motor, which comprises a basket body with a spherical hollow structure, an unmanned aerial vehicle body is arranged in the basket body, the unmanned aerial vehicle body comprises a fuselage, wings connected with the basket body are arranged on the outer side of the fuselage, and vertical fixing shafts are connected to the wings. The outer side of the fixed shaft is movably connected with a rotary drum through a bearing, a brushless outer rotor motor is arranged between the rotary drum and the fixed shaft, a fixed part of the brushless outer rotor motor is connected with the fixed shaft, a movable part of the brushless outer rotor motor is connected with the rotary drum, and the top of the outer side end of the rotary drum is connected with a propeller. The utility model provides an unmanned aerial vehicle football driven by a brushless motor. The unmanned aerial vehicle football is beneficial for solving the problem that the assembly distance between propellers and wings is strictly limited due to the fact that some existing unmanned aerial vehicle footballs adopt inner rotor motors.

Description

Technical Field

[0001] The utility model relates to the field of unmanned aerial vehicle football, in particular to an unmanned aerial vehicle football driven by a brushless motor. Background Art

[0002] Drone soccer, also known as aerial soccer, is an emerging sport that combines technology and sports. Unlike traditional soccer games, aerial soccer is played with drones equipped with spherical outer baskets. Generally, operators use radio remote control to control drone soccer to fly quickly along a specific path in the stadium; or teams participate in the game, with the goal of passing through the circular goal on the opponent's side, attacking and defending each other, and the team that scores more goals within a limited time wins.

[0003] The motors used in many existing drone footballs are brushless inner rotor motors. This structure uses the rotating shaft located on the inside of the motor as the output end. In specific implementation, the rotating shaft is set vertically, and the top of the rotating shaft is connected to the propeller. Due to the relatively small rotating shaft, this structure needs to strictly control the shaft length to prevent torque overload. This results in a small distance between the propeller and the wing of the drone (the motor bearing structure), and the propeller slipstream generated by the high-speed rotation of the propeller is easily affected by the wing. Utility Model Content

[0004] The utility model provides a brushless motor driven unmanned aerial vehicle football, which is conducive to solving the problem that some existing unmanned aerial vehicle footballs use inner rotor motors, resulting in a strictly limited assembly distance between propellers and wings.

[0005] The utility model is achieved in this way:

[0006] A brushless motor-driven drone football comprises a basket with a spherical hollow structure, a drone body is arranged inside the basket, the drone body comprises a fuselage, wings connected to the basket are arranged on the outside of the fuselage, a vertical fixed shaft is connected to the wing, a rotating drum is movably connected to the outside of the fixed shaft through a bearing, a brushless outer rotor motor is arranged between the rotating drum and the fixed shaft, a fixed part of the brushless outer rotor motor is connected to the fixed shaft, a movable part of the brushless outer rotor motor is connected to the rotating drum, and a propeller is connected to the top of the outer end of the rotating drum.

[0007] On the basis of the above technical solution, a plurality of wings are arranged centrally symmetrically relative to the fuselage.

[0008] On the basis of the above technical solution, the fixed shaft is vertically arranged, and its bottom is detachably connected to the wing.

[0009] On the basis of the above technical solution, the fixed shaft is connected with a first bearing and a second bearing which are spaced apart from each other, and the outer ends of the first bearing and the second bearing are respectively connected with a first bearing seat and a second bearing seat, and the outer ends of the first bearing seat and the second bearing seat are connected and fixed to the inner wall of the rotating drum.

[0010] On the basis of the above technical solution, both the first bearing seat and the second bearing seat are provided with air holes, and the air holes axially penetrate the first bearing seat and the second bearing seat respectively.

[0011] On the basis of the above technical solution, an end cover is connected to one axial end of the drum, the inner end of the end cover is clearance-matched with the fixed shaft, and the end cover is provided with a plurality of spiral blades symmetrically arranged along the axial center line of the drum.

[0012] On the basis of the above technical solution, the brushless outer rotor motor includes a stator, a rotor and a positioning sleeve arranged inside and outside, the stator is connected and fixed to the fixed shaft, and the positioning sleeve is connected to the movable part of the first bearing or the second bearing.

[0013] On the basis of the above technical solution, a transparent window is provided on the side wall of the drum, and a light source is provided in the inner area of ​​the transparent window of the fixed shaft.

[0014] On the basis of the above technical solution, the light source is communicatively connected to the wireless remote control terminal of the drone football, and the light source can emit light of at least two colors.

[0015] Compared with the prior art, the present invention has at least the following advantages:

[0016] The utility model arranges a vertical fixed shaft on the wing of the unmanned aerial vehicle body, uses the fixed shaft as the main bearing structure of the propeller, arranges a brushless outer rotor motor on the fixed shaft, and connects a rotating drum on the outside with the help of bearings, uses the rotating drum as the main rotation output structure, and arranges the propeller on the top of the outer side of the rotating drum. This structure is conducive to enhancing the structural strength of the propeller bearing mechanism, and further can greatly reduce the assembly clearance limit between the propeller and the wing by extending the axial length of the fixed shaft and the drum, which is conducive to solving the problem that some existing unmanned aerial vehicles use inner rotor motors, resulting in strict limitation of the assembly clearance between the propeller and the wing. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the technical solution of the implementation mode of the utility model, the drawings required for use in the implementation mode will be briefly introduced below. It should be understood that the following drawings only show certain embodiments of the utility model and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other relevant drawings can be obtained based on these drawings without paying creative work.

[0018] Figure 1 A schematic diagram of the three-dimensional structure of a drone soccer ball driven by a brushless motor in one embodiment;

[0019] Figure 2 for Figure 1 The schematic diagram of the structure of the drone body;

[0020] Figure 3 for Figure 2 Schematic diagram of the structure of the middle drive unit and propeller;

[0021] Figure 4 for Figure 3 A cross-sectional view of

[0022] Figure 5 It is a schematic diagram of the exploded structure of the driving part;

[0023] Figure 6 Schematic diagram of the structure of a light source and a transparent window in one embodiment.

[0024] Labels in the figure: 100, basket; 200, drone body; 1, fuselage; 2, wing; 3, driving part; 31, fixed shaft; 32, first bearing; 33, second bearing; 34, first bearing seat; 35, second bearing seat; 36, brushless outer rotor motor; 361, stator; 362, rotor; 363, positioning sleeve; 37, end cover; 371, blade; 38, drum; 381, transparent window; 39, light source; 4, propeller; a, wind hole. DETAILED DESCRIPTION

[0025] In order to make the purpose, technical scheme and advantages of the embodiments of the utility model clearer, the technical scheme in the embodiments of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiments of the utility model. Obviously, the described embodiments are part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model. Therefore, the following detailed description of the embodiments of the utility model provided in the drawings is not intended to limit the scope of the utility model for which protection is claimed, but merely represents selected embodiments of the utility model.

[0026] In the description of the present invention, the terms "first" and "second" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present invention, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0027] It should be noted that when an element is referred to as being "fixed to" another element, it may be directly on the other element or there may be a central element. When an element is considered to be "connected to" another element, it may be directly connected to an element or there may be a central element at the same time. The terms "vertical", "horizontal", "left", "right" and similar expressions used herein are for illustrative purposes only and do not represent the only implementation method.

[0028] The utility model is further described in detail below with reference to the accompanying drawings and specific embodiments.

[0029] Example 1: Combination Figure 1-5 The present embodiment discloses a brushless motor driven drone soccer ball, comprising a spherical hollow structure basket 100, the basket 100 is formed by splicing two detachable hemispherical shell structures, the basket 100 is made of plastic, so that the structure is light and can be used as an outer protective structure.

[0030] A drone body 200 is disposed inside the housing 100 . The drone body 200 includes a fuselage 1 . Four wings 2 are disposed on the outside of the fuselage 1 and are laterally extended and connected to the housing 100 . The four wings 2 are centrally symmetrical with respect to the longitudinal center axis of the fuselage 1 .

[0031] Furthermore, each wing 2 is connected to a driving member 3, which includes a vertical fixed shaft 31. The fixed shaft 31 is vertically arranged, and its bottom is detachably connected to the wing 2 by screws. A partial area of ​​the bottom of the fixed shaft 31 is inserted into the interior of the wing 2 during assembly, so that the cables extending to the fixed shaft 31 and connecting the electronic components will not be exposed.

[0032] The outer side of the fixed shaft 31 is movably connected with a rotating drum 38 through a bearing, a brushless outer rotor motor 36 is arranged between the rotating drum 38 and the fixed shaft 31, the fixed part of the brushless outer rotor motor 36 is connected to the fixed shaft 31, the movable part of the brushless outer rotor motor 36 is connected to the rotating drum 38, and the top of the outer end of the rotating drum 38 is connected to the propeller 4. This structure uses the rotating drum 38 as the main rotation output structure and sets the propeller 4 on the outer top of the rotating drum 38. This structure is conducive to enhancing the structural strength of the propeller 4 bearing mechanism, and then by extending the axial length of the fixed shaft 31 and the drum, the assembly clearance limit of the propeller 4 and the wing 2 is greatly reduced, which is conducive to solving the problem that some existing drone footballs use inner rotor motors, resulting in strict limitation of the assembly clearance between the propeller 4 and the wing 2.

[0033] In this embodiment, the fixed shaft 31 is connected with a first bearing 32 and a second bearing 33 that are spaced apart, the second bearing 33 is connected to the top of the fixed shaft 31, and the first bearing 32 is connected to the area near the bottom of the fixed shaft 31. The first bearing 32 and the second bearing 33 are connected to the first bearing seat 34 and the second bearing seat 35 at their outer ends, respectively, and the outer ends of the first bearing seat 34 and the second bearing seat 35 are connected and fixed to the inner side wall of the rotating drum 38. This structure enables the rotatable connection structure between the rotating drum 38 and the fixed shaft 31 to have better stability.

[0034] Combination Figure 4 As shown, the brushless outer rotor motor 36 includes a stator 361, a rotor 362 and a positioning sleeve 363 arranged inside and outside, the stator 361 is connected and fixed to the fixed shaft 31, and the positioning sleeve 363 is connected to the movable part of the first bearing 32 or the second bearing 33. In this embodiment, the positioning sleeve 363 is connected and fixed to the movable part at the outer end of the first bearing 32. When working, the rotor 362 located on the outside drives the positioning sleeve 363 to rotate. Since the positioning sleeve 363 is connected to the movable part of the first bearing 32, the movable part of the first bearing 32 connected to the outer rotating drum 38 will also rotate synchronously. The rotation of the rotating drum 38 drives the propeller 4 on the top to rotate, thereby realizing the lifting and lowering of the drone football, and then using the speed difference between different propellers 4 to achieve steering.

[0035] Further, combined with Figure 4 and Figure 5 The first bearing seat 34 and the second bearing seat 35 are both provided with air holes a, and the air holes a axially penetrate the first bearing seat 34 and the second bearing seat 35 respectively, and their function is to establish a connection between the inner gap of the rotating drum 38 and the external space, so as to improve the heat dissipation efficiency of the brushless outer rotor motor 36 when it is working.

[0036] Furthermore, an end cover 37 is connected to one axial end of the rotating drum 38, and the inner end of the end cover 37 is clearance-matched with the fixed shaft 31. The end cover 37 is provided with a plurality of spiral blades 371 which are centrally symmetrically arranged along the axial center line of the drum. This enables the end cover 37 to form a directional vortex for the air inside when rotating with the rotating drum 38, thereby further improving the heat dissipation efficiency of the brushless outer rotor motor 36 when working.

[0037] Example 2: Based on Example 1, Figure 6As shown, in this embodiment, a transparent window 381 is provided on the side wall of the drum, and the transparent window 381 is specifically formed by a transverse through hole and a transparent acrylic plate, so that the internal situation can be clearly observed from the outside. The fixed shaft 31 is provided with a light source 39 in the inner area of ​​the transparent window 381, and the light source 39 adopts an LED light. It should be noted that the light source 39 is connected to the wireless remote control terminal of the drone football in communication, and the light source 39 can emit at least two colors of light. In this embodiment, the light source 39 can emit red light and green light, which is used to associate the movement of the drone football with a light display prompt. For example, when the drone football moves forward, the light source 39 emits green light, and the operator can clearly distinguish it from the outside in real time. When the drone football moves backward, the light source 39 emits red light. In other embodiments, the light brightness and color can be flexibly paired and selected according to needs to achieve more functions and status prompt effects.

[0038] The above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that the technical solutions described in the aforementioned embodiments may still be modified, or some of the technical features may be replaced by equivalents. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A brushless motor driven drone football, characterized in that: The invention comprises a basket (100) with a spherical hollow structure, wherein a drone body (200) is arranged inside the basket (100), wherein the drone body (200) comprises a fuselage (1), wherein a wing (2) connected to the basket (100) is arranged outside the fuselage (1), wherein a vertical fixed shaft (31) is connected to the wing (2), wherein a rotating drum (38) is movably connected to the outside of the fixed shaft (31) via a bearing, wherein a brushless outer rotor motor (36) is arranged between the rotating drum (38) and the fixed shaft (31), wherein a fixed part of the brushless outer rotor motor (36) is connected to the fixed shaft (31), wherein a movable part of the brushless outer rotor motor (36) is connected to the rotating drum (38), and a propeller (4) is connected to the top of the outer end of the rotating drum (38).

2. The brushless motor driven drone soccer ball according to claim 1, characterized in that: A plurality of wings (2) are centrally symmetrically arranged relative to the fuselage (1).

3. The brushless motor driven drone soccer ball according to claim 1, characterized in that: The fixed shaft (31) is arranged vertically, and its bottom is detachably connected to the wing (2).

4. The brushless motor driven drone soccer ball according to claim 3, characterized in that: The fixed shaft (31) is connected to a first bearing (32) and a second bearing (33) which are spaced apart from each other. The outer ends of the first bearing (32) and the second bearing (33) are respectively connected to a first bearing seat (34) and a second bearing seat (35). The outer ends of the first bearing seat (34) and the second bearing seat (35) are connected and fixed to the inner wall of the rotating drum (38).

5. The brushless motor driven drone soccer ball according to claim 4, characterized in that: The first bearing seat (34) and the second bearing seat (35) are both provided with air holes (a), and the air holes (a) axially penetrate the first bearing seat (34) and the second bearing seat (35) respectively.

6. The brushless motor driven drone soccer ball according to claim 5, characterized in that: An end cover (37) is connected to one axial end of the rotating drum (38), the inner end of the end cover (37) is clearance-matched with the fixed shaft (31), and the end cover (37) is provided with a plurality of spiral blades (371) centrally symmetrically arranged along the axial center line of the drum.

7. The brushless motor driven drone soccer ball according to claim 6, characterized in that: The brushless outer rotor motor (36) comprises a stator (361), a rotor (362) and a positioning sleeve (363) which are arranged inside and outside. The stator (361) is connected and fixed to a fixed shaft (31), and the positioning sleeve (363) is connected to a movable part of a first bearing (32) or a second bearing (33).

8. The brushless motor driven drone soccer ball according to claim 6, characterized in that: A transparent window (381) is provided on the side wall of the drum, and a light source (39) is provided on the fixed shaft (31) in the inner area of ​​the transparent window (381).

9. The brushless motor driven drone soccer ball according to claim 8, characterized in that: The light source (39) is communicatively connected to the wireless remote control terminal of the drone soccer, and the light source (39) is capable of emitting light of at least two colors.

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