WO2018076534A1 - 保护罩及无人飞行器 - Google Patents

保护罩及无人飞行器 Download PDF

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Publication number
WO2018076534A1
WO2018076534A1 PCT/CN2016/113275 CN2016113275W WO2018076534A1 WO 2018076534 A1 WO2018076534 A1 WO 2018076534A1 CN 2016113275 W CN2016113275 W CN 2016113275W WO 2018076534 A1 WO2018076534 A1 WO 2018076534A1
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WO
WIPO (PCT)
Prior art keywords
protective cover
arm
mounting
mounting portion
side wall
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Ceased
Application number
PCT/CN2016/113275
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English (en)
French (fr)
Inventor
冯建刚
唐尹
王震
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
SZ DJI Technology Co Ltd
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SZ DJI Technology Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by SZ DJI Technology Co Ltd filed Critical SZ DJI Technology Co Ltd
Priority to CN201680088064.9A priority Critical patent/CN109476374A/zh
Publication of WO2018076534A1 publication Critical patent/WO2018076534A1/zh
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B64—AIRCRAFT; AVIATION; COSMONAUTICS
    • B64C—AEROPLANES; HELICOPTERS
    • B64C27/00—Rotorcraft; Rotors peculiar thereto
    • B64C27/04—Helicopters
    • B64C27/12—Rotor drives
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B64—AIRCRAFT; AVIATION; COSMONAUTICS
    • B64U—UNMANNED AERIAL VEHICLES [UAV]; EQUIPMENT THEREFOR
    • B64U30/00—Means for producing lift; Empennages; Arrangements thereof
    • B64U30/20—Rotors; Rotor supports
    • B64U30/29—Constructional aspects of rotors or rotor supports; Arrangements thereof
    • B64U30/299—Rotor guards
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B64—AIRCRAFT; AVIATION; COSMONAUTICS
    • B64U—UNMANNED AERIAL VEHICLES [UAV]; EQUIPMENT THEREFOR
    • B64U10/00—Type of UAV
    • B64U10/10—Rotorcrafts
    • B64U10/13—Flying platforms
    • B64U10/14—Flying platforms with four distinct rotor axes, e.g. quadcopters

Definitions

  • the invention relates to the field of unmanned aerial vehicles, and in particular to a protective cover and an unmanned aerial vehicle.
  • UAVs can be used in military or civil applications such as monitoring, reconnaissance and exploration, and are therefore popular in many areas. Because some operators do not know the manipulation skills, the UAV often dives from high altitude to fall, in order to avoid the damage of the UAV propeller caused by the impact of the obstacle during the fall or the propeller of the UAV touches the person. Unnecessary damage, a protective cover is designed to prevent such damage. However, the current protective cover is usually fixed to the arm of the UAV by screwing, which is time-consuming and requires additional tools.
  • the present invention aims to solve at least one of the technical problems existing in the prior art. To this end, the present invention provides a protective cover and an unmanned aerial vehicle.
  • the protective cover of the embodiment of the present invention is for protecting a propeller provided on the arm.
  • the protective cover includes a protective cover main body and a mounting portion.
  • the mounting portion includes a body extending from the protective cover body and a hook at an end of the body away from the main body of the protective cover, the body is configured to pass through the arm, and the hook is used for The arm cooperates to enable the protective cover to be detachably mounted on the arm.
  • the protective cover of the embodiment of the present invention is detachably mounted on the arm by using a hook, so that the protective cover is easy to assemble and disassemble, takes less time, and does not require additional tools.
  • the protective cover body includes opposite first and second faces, The second surface is provided with a groove, and the mounting portion extends from a bottom surface of the groove.
  • the protective cover includes at least one limiting portion that extends from a bottom surface of the groove.
  • the protective cover body has a through hole penetrating through the first surface and a bottom surface of the groove, and the body is provided with the periphery of the through hole.
  • the protective cover body is provided with a notch, and the notch communicates with the groove, and the side wall of the notch cooperates with a side wall of the arm.
  • the hook includes a clamping surface and a connecting surface
  • the clamping surface extends from the body and an angle between the body and the body is an acute angle or a right angle
  • the connecting surface is connected The clamping surface and the body.
  • the angle between the connecting surface and the clamping surface is an acute angle.
  • the protective cover further includes a conforming wall extending from the protective cover body and in close contact with a side wall of the arm.
  • the UAV of the embodiment of the present invention includes an arm and a protective cover.
  • the protective cover includes a protective cover body.
  • One of the arm and the protective cover body has a mounting hole formed therein, and the other portion extends to form a mounting portion, and the mounting portion includes a body extending from the arm or the cover body and is located away from the body a hook of one end of the arm or the cover body, the body is configured to pass through the mounting hole, and the hook is configured to cooperate with the cover body or the arm to enable the cover to be detachably Mounted on the arm.
  • the protective cover is detachably mounted on the arm by using a hook, so that the protective cover is easy to assemble and disassemble, takes less time, and does not require additional tools.
  • the protective cover body includes opposite first and second faces, the second face is provided with a groove, and the mounting portion extends from a bottom surface of the groove; The arm is partially received within the recess.
  • the protective cover includes at least one limiting portion, the limiting portion extending from a bottom surface of the groove;
  • the arm is provided with a mounting hole, the mounting portion passes through the mounting hole, and the limiting portion abuts against an inner surface of the mounting hole.
  • the protective cover body is provided with a notch, and the notch communicates with the groove, and the side wall of the notch cooperates with a side wall of the arm.
  • the protective cover body has a through hole penetrating through the first surface and a bottom surface of the groove, and the body is provided with the periphery of the through hole.
  • the hook includes a clamping surface and a connecting surface, the clamping surface extends from the body and an angle between the body and the body is an acute angle or a right angle, and the connecting surface is connected Said clamping surface and said body;
  • the arm includes opposite upper and lower surfaces, the arm is provided with a mounting hole penetrating the upper surface and the lower surface, and the mounting portion is along the upper surface toward the lower surface The direction passes through the mounting hole, and the clamping surface is fastened to the lower surface.
  • the angle between the connecting surface and the clamping surface is an acute angle.
  • the protective cover further includes a conforming wall
  • the arm includes a sidewall connecting the upper surface and the lower surface, the conforming wall extending from the protective cover body and The side walls are in close contact.
  • the protective cover body is a frame structure, including a circular arc segment, two straight segments respectively connected to the two ends of the circular arc segment, and a mounting segment, and the other two straight segments One end is connected to the mounting section, and the mounting portion is located in the mounting section.
  • FIG. 1 is a perspective view of an unmanned aerial vehicle according to an embodiment of the present invention.
  • FIG. 2 is a perspective view showing another perspective of an unmanned aerial vehicle according to an embodiment of the present invention.
  • Figure 3 is an enlarged schematic view of a portion III of the unmanned aerial vehicle of Figure 1;
  • Figure 4 is an enlarged schematic view showing an IV portion of the unmanned aerial vehicle of Figure 2;
  • Figure 5 is a partial perspective view of the arm of the unmanned aerial vehicle of the embodiment of the present invention.
  • FIG. 6 is a partial perspective view showing another perspective of an arm of an unmanned aerial vehicle according to an embodiment of the present invention.
  • FIG. 7 is a perspective view of a protective cover of an unmanned aerial vehicle according to an embodiment of the present invention.
  • FIG. 8 is a perspective view showing another perspective of a protective cover of an unmanned aerial vehicle according to an embodiment of the present invention.
  • Figure 9 is an enlarged schematic view showing a portion of the structure of the protective cover of the unmanned aerial vehicle of Figure 7;
  • Figure 10 is an enlarged perspective view showing a portion of the structure of the protective cover of the unmanned aerial vehicle of Figure 8;
  • Figure 11 is a side elevational view showing a partial structure of a mounting portion of an unmanned aerial vehicle according to an embodiment of the present invention.
  • Unmanned aerial vehicle 100
  • Motor mounting seat 21 mounting hole 22, upper surface 23, lower surface 24, first outer side wall 25, second outer side wall 26, inner surface 22a of mounting hole;
  • Protective cover main body 31 circular arc segment 311, straight line segment 312, mounting portion 313, first surface 314, recess 3141, bottom surface of the recess 3142, second surface 315, notch 316, notched sidewall 3161, through hole 31a ;
  • the mounting portion 32 the body 321, the hook 322, the clamping surface 3221, the connecting surface 3222;
  • connection In the description of the present invention, it should be noted that the terms “installation”, “connected”, and “connected” are to be understood broadly, and may be fixed or detachable, for example, unless otherwise explicitly defined and defined. Connected, or integrally connected; may be mechanically connected, may be electrically connected or may communicate with each other; may be directly connected, or may be indirectly connected through an intermediate medium, may be internal communication of two elements or interaction of two elements relationship.
  • Connected, or integrally connected may be mechanically connected, may be electrically connected or may communicate with each other; may be directly connected, or may be indirectly connected through an intermediate medium, may be internal communication of two elements or interaction of two elements relationship.
  • the specific meanings of the above terms in the present invention can be understood on a case-by-case basis.
  • the first feature "on” or “under” the second feature may include direct contact of the first and second features, and may also include first and second features, unless otherwise specifically defined and defined. It is not in direct contact but through additional features between them.
  • the first feature "above”, “above” and “above” the second feature includes the first feature directly above and above the second feature, or merely indicating that the first feature level is higher than the second feature.
  • the first feature “below”, “below” and “below” the second feature includes the first feature directly below and below the second feature, or merely the first feature level being less than the second feature.
  • the unmanned aerial vehicle 100 includes a body 10, an arm 20 and a protective cover 30.
  • the UAV 100 is a rotorcraft UAV 100. As shown in FIG. 1 or 2, four arms 20 extend outwardly from the body 10. A propeller (not shown) can be mounted on each arm 20.
  • the UAV 100 is a quadrotor unmanned aerial vehicle. It will be appreciated that in other embodiments, UAV 100 may be an unmanned aerial vehicle of other number of rotors. For example, a three-rotor unmanned aerial vehicle, a six-rotor unmanned aerial vehicle or an eight-rotor unmanned aerial vehicle.
  • the propeller can be mounted at the end of the arm 20, and the guard cover 30 is also mounted at the end of the arm 20 in order to protect the rotor.
  • the protective cover 30 is located below the propeller, thus preventing the rotor from causing unnecessary damage when the drone contacts or touches an obstacle on the ground or the bottom surface when landing.
  • the "above” of the present invention is the upward direction of the unmanned aerial vehicle 100 during normal flight, and the “lower” is the downward direction when the unmanned aerial vehicle 100 is flying.
  • the arm 20 is provided with a motor mount 21, and the motor of the unmanned aerial vehicle 100 (not shown) is mounted on the motor mount 21, and the propeller is fixedly mounted on the motor shaft of the motor, and the motor is mounted.
  • the propeller can be rotated while working.
  • the rotational speed of the propeller can be controlled to control the flight attitude of the unmanned aerial vehicle 100.
  • the arm 20 is provided with a mounting hole 22 for mounting the protective cover 30.
  • the mounting hole 22 is opened adjacent to the motor mount 21 so that the boot 30 can be placed close to the propeller for the purpose of protecting the rotor.
  • the motor mount 21 is provided at the end of the arm 20, and therefore, the mounting hole 22 is also provided at the end of the arm 20.
  • the arm 20 includes two opposing surfaces, including an upper surface 23 and a lower surface 24. Mounting hole 22 Through the upper surface 23 and the lower surface 24.
  • the arm 20 includes a first outer side wall 25 and a second outer side wall 26, and the first outer side wall 25 connects the upper surface 23 and the lower surface 24.
  • the second outer side wall 26 extends from the upper surface 23. As shown in FIG. 5, the second outer side wall 26 extends upward from the upper surface 23.
  • the first outer side wall 25 has a curved shape, so that the thickness of the side wall of the mounting hole 22 is uniform to improve the yield of the arm 20 at the time of production.
  • the shape of the inner surface 22a of the mounting hole 22 adjacent to the first outer side wall 25 is shaped to match the shape of the first outer side wall 25. That is, the shape of the inner surface 22a of the mounting hole 22 near the first outer side wall 25 is the same as or similar to the shape of the first outer side wall 25.
  • the protective cover 30 of the embodiment of the present invention is detachably mounted on the arm 20 for protecting the propeller disposed on the arm 20.
  • the protective cover 30 includes a protective cover main body 31, a mounting portion 32, a limiting portion 33, and a bonding wall 34.
  • the boot main body 31 has a frame structure. Specifically, the boot main body 31 is a sector frame centered on the mounting portion 32. It should be noted that the center of the sector frame is a range of the area near the central axis of the sector frame. Therefore, the center axis of the sector frame may be located on the mounting portion 32 or may be located near the mounting portion 32. In the radial direction of the propeller, the size of the boot body 31 is larger than the radius of the propeller.
  • the protective cover main body 31 includes a circular arc segment 311, two straight segments 312, and a mounting portion 313.
  • Two straight line segments 312 are respectively connected to both ends of the circular arc segment 311. The arc of the intersection of the arc segment 311 and the straight segment 312 transitions.
  • the other end of the two straight sections 312 is connected to the mounting section 313, and the mounting portion 32 is located in the mounting section 313.
  • the boot body 31 further includes opposing first and second faces 314, 315. Specifically, as shown in the orientation of FIG. 9, the second face 315 is located below the first face 314.
  • the second surface 315 is provided with a recess 3141, and the mounting portion 32 extends from the bottom surface 3142 of the recess 3141.
  • the mounting portion 32 extends downward from the bottom surface 3142 of the recess 3141.
  • the arm 20 is partially housed in the recess 3141.
  • the bottom surface 3142 of the recess 3141 is in close contact with the upper surface 23 of the arm 20.
  • the protective cover main body 31 has a through hole 31a penetrating through the first surface 314 and the second surface 315. Specifically, the through hole 31 a penetrates the bottom surface 3142 of the groove 3141 and the first surface 314 .
  • the cover body 31 is further provided with a notch 316, and the notch 316 is in communication with the groove 3141.
  • the side wall 3161 of the notch 316 mates with the second outer side wall 26 of the arm 20.
  • the side wall 3161 of the notch 316 is substantially the same shape as the second outer side wall 26 of the arm 20. As shown in FIG. 6, the shape of the second outer side wall 26 is a circular arc shape. Therefore, the side wall 3161 of the notch 316 is also a circular arc shape.
  • the mounting portion 32 includes a body 321 and a hook 322.
  • the body 321 extends from the boot body 31.
  • the hook 322 is located at an end of the body 321 away from the cover body 31.
  • the body 321 is for passing through the arm 20, and the hook 322 is for engaging with the arm 20 to detachably mount the boot 30 on the arm 20.
  • the connecting body 321 is provided at the periphery of the through hole 31a.
  • the hook 322 includes a clamping surface 3221 and a connecting surface 3222 .
  • the clamping surface 3221 extends from the body 321 and has an acute angle or a right angle with the body 321 .
  • the connecting surface 3222 connects the clamping surface 3221 and the body 321 .
  • the angle ⁇ between the connecting surface 3222 and the engaging surface 3221 is an acute angle.
  • the mounting portion 32 passes through the mounting hole 22 in the direction from the upper surface 23 to the lower surface 24, and the engaging surface 3221 is fastened to the lower surface 24.
  • the limiting portion 33 extends from the bottom surface 3142 of the recess 3141.
  • the stopper portion 33 abuts against the inner surface 22a of the mounting hole 22.
  • the limiting portion 33 is spaced apart from the mounting portion 32.
  • the extending direction of the limiting portion 33 is the same as the extending direction of the mounting portion 32.
  • the limiting portion 33 and the mounting portion 32 both extend downward from the bottom surface 3142 of the recess 3141.
  • the number of the limiting portions 33 is two, and the two limiting portions 33 are respectively disposed on opposite sides of the mounting portion 32.
  • the bonding wall 34 extends from the protective cover main body 31 and is in close contact with the first outer side wall 25 of the arm 20 .
  • the mounting portion 32 has a certain elasticity. Referring to FIG. 4 , when the protective cover 30 is installed, the mounting portion 32 is elastically deformed, and the connecting surface 3222 guides the hook 322 into the mounting hole 22 . Inside, and the limiting portion 33 abuts against the inner surface 22a of the mounting hole 22, the protective cover 30 moves along the hole depth direction of the mounting hole 22, and when the protective cover 30 is moved to the predetermined position, the mounting portion 32 returns to deformation, the card The tight surface 3221 is snapped onto the lower surface 24 to complete the installation of the protective cover 30.
  • the mounting portion 32 is elastically deformed to disengage the clamping surface 3221 from the lower surface 24, and then the mounting portion 32 and the limiting portion 33 are withdrawn from the mounting hole 22, thereby enabling protection.
  • the cover 30 is detached from the arm 20.
  • the protective cover 30 of the embodiment of the present invention is detachably mounted on the arm 20 by using the hook 322, so that the protective cover 30 is easy to assemble and disassemble, takes less time, and does not require additional tools.
  • the body 321 is disposed at the periphery of the through hole 31a such that the mounting portion 32 has a large elastic deformation space, so that the mounting portion 32 can withstand a large external force before failure.
  • the protective cover main body 31 is a sector-shaped frame centered on the mounting portion 32 such that the contour of the protective cover main body 31 can match the rotational trajectory of the propeller, so that the protective cover 30 is more compactly fitted with the propeller. Further, the protective cover main body 31 is a sector-shaped frame body, which can reduce the material of the protective cover 30, so that the weight of the protective cover 30 can be further reduced.
  • the size of the protective cover main body 31 is larger than the radius of the propeller so that the protective cover 30 can prevent the propeller from extending out of the protective cover 30, thereby preventing the propeller from contacting the obstacle in the radial direction, thereby protecting the spiral.
  • the circular arc segment 311 corresponds to the radial movement path of the propeller in the radial direction, so that the propeller and the protective cover main body 31 are more compactly fitted, which is advantageous for the volume of the small unmanned aerial vehicle 100.
  • the arc transition of the arc segment 311 and the straight segment 312 is such that the internal stress at the junction of the arc segment 311 and the straight segment 312 is small, and the connection between the arc segment 311 and the straight segment 312 can be prevented from occurring during production. Manufacturing defects such as cracks or breaks can improve the yield of the protective cover 30.
  • the side wall 3161 of the notch 316 cooperates with the second outer side wall 26 of the arm 20 such that the mating structure of the boot 30 and the arm 20 is more compact.
  • the angle ⁇ between the connecting surface 3222 and the clamping surface 3221 is an acute angle, so that the connecting surface 3222 is a slope with respect to the clamping surface 3221.
  • the connecting surface 3222 can guide the mounting portion 32 through the arm 20, It makes the mounting portion 32 more convenient to install.
  • the abutting portion 33 abuts against the inner surface 22a of the mounting hole 22 to enhance the connection strength between the protective cover 30 and the arm 20, and improve the stability of the mounting of the protective cover 30.
  • the limiting portion 33 can restrict the rotation of the boot 30 relative to the arm 20.
  • the close contact of the abutment wall 34 to the first outer side wall 25 not only makes the structure of the protective cover 30 and the arm 20 compact, but also increases the connection area between the protective cover 30 and the arm 20, thereby ensuring that the protective cover 30 can be stably installed. On the arm 20.
  • the arm 20 extends to form a mounting portion, and the cover body 31 defines a mounting hole.
  • the mounting portion includes a body extending from the arm 20 and a hook located at an end of the body away from the arm 20, the body For passing through the mounting hole, the hook is adapted to cooperate with the boot body 31 to detachably mount the boot on the arm 20.
  • the protective cover 30 is an integrally formed structure.
  • the material of the protective cover 30 is plastic, and the protective cover 30 can be formed by an injection molding process.
  • the protective cover 30 is an integrally formed structure, which can reduce the number of parts of the protective cover 30, can reduce the production process of the protective cover 30, and thereby reduce the cost of the protective cover 30.
  • the protective cover 30 is made of plastic and is made of a metal material, which can reduce the weight of the protective cover 30, thereby reducing the weight of the UAV 100 and improving the endurance of the UAV 100.
  • the boot body 31 is in the shape of a nearly triangular frame, a circular frame, or an elliptical frame centered on the mounting portion 32, as long as it functions to protect the propeller.
  • the mounting portion 32 can extend from the second face 315. That is, in other embodiments, the recess 3141 can be omitted and the mounting portion 32 extends directly downward from the second face 315.
  • the structure of the protective cover 30 is simple and the manufacturing cost is low.
  • the limiting portion 33 can extend directly from the second surface 315.
  • the number of the limiting portions 33 may be other than two, for example, the number of the limiting portions 33 is 1, 3, or 4, and the like.
  • the limiting portion 33 can abut against the mounting portion 32.
  • the shape of the second outer sidewall 26 and the shape of the sidewall 3161 of the indentation 316 can be parabolic or rectilinear.
  • the conforming wall 34 can be omitted.
  • first and second are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated.
  • features defining “first” or “second” may include at least one of the features, either explicitly or implicitly.
  • the meaning of "a plurality” is at least two, such as two, three, etc., unless specifically defined otherwise.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Aviation & Aerospace Engineering (AREA)
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Abstract

一种保护罩（30），其用于保护设置在机臂（20）上的螺旋桨，该保护罩（30）包括保护罩主体（31）及安装部（32）；安装部（32）包括自保护罩主体（31）延伸的本体（321）及位于本体（321）的远离保护罩主体（31）一端的卡勾（322）；本体（321）用于穿过机臂（20）；卡勾（321）用于与机臂（20）配合以使保护罩（30）能够拆卸地安装在机臂（20）上。还提供了一种无人飞行器。该保护罩能够拆卸地安装在机臂上，使得拆装方便、耗时少，且不需要额外的工具。

Description

保护罩及无人飞行器 技术领域
本发明涉及无人飞行器领域，尤其涉及一种保护罩及无人飞行器。
背景技术
无人飞行器可以用于执行监测、侦察及探索等军事或民事应用，因此在众多领域受到欢迎。由于有些操纵者不太懂得操纵技巧，导致无人飞行器经常从高空俯冲至坠落，为避免在坠落过程中无人飞行器的螺旋桨受到障碍物冲击而损坏或无人飞行器的螺旋桨触碰到人而造成不必要的伤害，一种保护罩被设计用来防止此类伤害的发生。然而，目前的保护罩通常是用螺钉锁合固定在无人飞行器的机臂上，拆装耗时且需要额外的工具。
发明内容
本发明旨在至少解决现有技术中存在的技术问题之一。为此，本发明提供一种保护罩及一种无人飞行器。
本发明实施方式的保护罩用于保护设置在机臂上的螺旋桨。保护罩包括保护罩主体及安装部。所述安装部包括自所述保护罩主体延伸的本体及位于所述本体的远离所述保护罩主体一端的卡勾，所述本体用于穿过所述机臂，所述卡勾用于与所述机臂配合以使所述保护罩能够拆卸地安装在所述机臂上。
本发明实施方式的保护罩由于使用卡勾能够拆卸地安装在机臂上，使得保护罩拆装方便、耗时少，且不需要额外的工具。
在某些实施方式中，所述保护罩主体包括相背的第一面及第二面，所述 第二面开设有凹槽，所述安装部从所述凹槽的底面延伸。
在某些实施方式中，所述保护罩包括至少一个限位部，所述限位部从所述凹槽的底面延伸。
在某些实施方式中，所述保护罩主体开设有贯通所述第一面及所述凹槽的底面的通孔，所述本体设置所述通孔周缘。
在某些实施方式中，所述保护罩主体开设有个缺口，所述缺口与所述凹槽连通，所述缺口的侧壁与所述机臂的一侧壁配合。
在某些实施方式中，所述卡勾包括卡紧面及连接面，所述卡紧面自所述本体延伸且与所述本体之间的夹角为锐角或直角，所述连接面连接所述卡紧面及所述本体。
在某些实施方式中，所述连接面与所述卡紧面之间的夹角为锐角。
在某些实施方式中，所述保护罩还包括贴合壁，所述贴合壁自所述保护罩主体延伸并与所述机臂的一侧壁贴紧。
本发明实施方式的无人飞行器包括机臂及保护罩。保护罩包括保护罩主体。所述机臂和所述保护罩主体其中一个上开设有安装孔，另一个上延伸形成安装部，所述安装部包括自所述机臂或保护罩主体延伸的本体及位于所述本体的远离所述机臂或保护罩主体一端的卡勾，所述本体用于穿过所述安装孔，所述卡勾用于与所述保护罩主体或机臂配合以使所述保护罩能够拆卸地安装在所述机臂上。
本发明实施方式的无人飞行器中，保护罩由于使用卡勾能够拆卸地安装在机臂上，使得保护罩拆装方便、耗时少，且不需要额外的工具。
在某些实施方式中，所述保护罩主体包括相背的第一面及第二面，所述第二面开设有凹槽，所述安装部从所述凹槽的底面延伸；所述机臂部分地收容在所述凹槽内。
在某些实施方式中，所述保护罩包括至少一个限位部，所述限位部从所述凹槽的底面延伸；
所述机臂开设有安装孔，所述安装部穿过所述安装孔，所述限位部抵靠在所述安装孔的内表面上。
在某些实施方式中，所述保护罩主体开设有个缺口，所述缺口与所述凹槽连通，所述缺口的侧壁与所述机臂的一侧壁配合。
在某些实施方式中，所述保护罩主体开设有贯通所述第一面及所述凹槽的底面的通孔，所述本体设置所述通孔周缘。
在某些实施方式中，所述卡勾包括卡紧面及连接面，所述卡紧面自所述本体延伸且与所述本体之间的夹角为锐角或直角，所述连接面连接所述卡紧面及所述本体；
所述机臂包括相背的上表面及下表面，所述机臂开设有贯穿所述上表面及所述下表面的安装孔，所述安装部沿自所述上表面向所述下表面的方向穿过所述安装孔，所述卡紧面扣合在所述下表面上。
在某些实施方式中，所述连接面与所述卡紧面之间的夹角为锐角。
在某些实施方式中，所述保护罩还包括贴合壁，所述机臂包括连接所述上表面与所述下表面的侧壁，所述贴合壁自所述保护罩主体延伸并与所述侧壁贴紧。
在某些实施方式中，所述保护罩主体为框体结构，包括圆弧段、分别与所述圆弧段的两端连接的两个直线段及安装段，所述两个直线段的另一端与所述安装段连接，所述安装部位于所述安装段。
本发明的附加方面和优点将在下面的描述中部分给出，部分将从下面的描述中变得明显，或通过本发明的实践了解到。
附图说明
本发明的上述和/或附加的方面和优点从结合下面附图对实施方式的描述中将变得明显和容易理解，其中：
图1是本发明实施方式的无人飞行器的立体示意图；
图2是本发明实施方式的无人飞行器的另一视角的立体示意图；
图3是图1的无人飞行器的III部分的放大示意图；
图4是图2的无人飞行器的IV部分的放大示意图；
图5是本发明实施方式的无人飞行器的机臂的部分立体示意图；
图6是本发明实施方式的无人飞行器的机臂的另一视角的部分立体示意图；
图7是本发明实施方式的无人飞行器的保护罩的立体示意图；
图8是本发明实施方式的无人飞行器的保护罩的另一视角的立体示意图；
图9是图7中的无人飞行器的保护罩的部分结构的放大的示意图；
图10是图8中的无人飞行器的保护罩的部分结构的放大的立体示意图；
图11是本发明实施方式的无人飞行器的安装部的部分结构的侧面示意图；
主要元件符号说明：
无人飞行器100；
机身10；
机臂20；
电机安装座21、安装孔22、上表面23、下表面24、第一外侧壁25、第二外侧壁26、安装孔的内表面22a；
保护罩30；
保护罩主体31、圆弧段311、直线段312、安装段313、第一面314、凹槽3141、凹槽的底面3142、第二面315、缺口316、缺口的侧壁3161、通孔31a；
安装部32、本体321、卡勾322、卡紧面3221、连接面3222；
限位部33；
贴合壁34。
具体实施方式
下面详细描述本发明的实施方式，所述实施方式的示例在附图中示出，其中自始至终相同或类似的标号表示相同或类似的元件或具有相同或类似功能的元件。下面通过参考附图描述的实施方式是示例性的，仅用于解释本发明，而不能理解为对本发明的限制。
在本发明的描述中，需要理解的是，术语“中心”、“纵向”、“横向”、“长度”、“宽度”、“厚度”、“上”、“下”、“前”、“后”、“左”、“右”、“竖直”、“水平”、“顶”、“底”、“内”、“外”、“顺时针”、“逆时针”等指示的方位或位置关系为基于附图所示的方位或位置关系，仅是为了便于描述本发明和简化描述，而不是指示或暗示所指的装置或元件必须具有特定的方位、以特定的方位构造和操作，因此不能理解为对本发明的限制。
在本发明的描述中，需要说明的是，除非另有明确的规定和限定，术语“安装”、“相连”、“连接”应做广义理解，例如，可以是固定连接，也可以是可拆卸连接，或一体地连接；可以是机械连接，也可以是电连接或可以相互通讯；可以是直接相连，也可以通过中间媒介间接相连，可以是两个元件内部的连通或两个元件的相互作用关系。对于本领域的普通技术人员而言，可以根据具体情况理解上述术语在本发明中的具体含义。
在本发明中，除非另有明确的规定和限定，第一特征在第二特征之“上”或之“下”可以包括第一和第二特征直接接触，也可以包括第一和第二特征不是直接接触而是通过它们之间的另外的特征接触。而且，第一特征在第二特征“之上”、“上方”和“上面”包括第一特征在第二特征正上方和斜上方，或仅仅表示第一特征水平高度高于第二特征。第一特征在第二特征“之下”、“下方”和“下面”包括第一特征在第二特征正下方和斜下方，或仅仅表示第一特征水平高度小于第二特征。
下文的公开提供了许多不同的实施方式或例子用来实现本发明的不同结构。为了简化本发明的公开，下文中对特定例子的部件和设置进行描述。 当然，它们仅仅为示例，并且目的不在于限制本发明。此外，本发明可以在不同例子中重复参考数字和/或参考字母，这种重复是为了简化和清楚的目的，其本身不指示所讨论各种实施方式和/或设置之间的关系。此外，本发明提供了的各种特定的工艺和材料的例子，但是本领域普通技术人员可以意识到其他工艺的应用和/或其他材料的使用。
请一并参阅图1及图2，本发明实施方式的无人飞行器100包括机身10、机臂20及保护罩30。无人飞行器100为旋翼无人飞行器100。如图1或图2所示，四个机臂20从机身10上向外延伸。每个机臂20上可安装一个螺旋桨(图未示)。
因此，本实施方式中，无人飞行器100为四旋翼无人飞行器。可以理解，在其他实施方式中，无人飞行器100可为其他数量旋翼的无人飞行器。例如为三旋翼无人飞行器、六旋翼无人飞行器或八旋翼无人飞行器等。
螺旋桨可安装在机臂20的末端，为了起到保护旋翼的作用，保护罩30也安装在机臂20的末端。保护罩30位于螺旋桨的下方，这样避免旋翼在无人机在降落时与地面或底面上的障碍物接触或触碰到人而造成不必要的伤害。需要说明的是，本发明所述的“上方”为无人飞行器100正常飞行时向上的方向，“下方”为无人飞行器100飞行时向下的方向。
请一并参阅图3-图6，机臂20设置有电机安装座21，无人飞行器100的电机(图未示)安装在电机安装座21上，螺旋桨固定安装在电机的电机轴上，电机在工作时可以带动螺旋桨旋转。通过控制电机的转速，可以控制螺旋桨的转速，从而控制无人飞行器100的飞行姿态。
机臂20开设有安装孔22，安装孔22用于安装保护罩30。具体地，安装孔22靠近电机安装座21开设，使得保护罩30可以靠近螺旋桨设置以达到保护旋翼的目的。为了充分利用机臂20的空间，电机安装座21设置在机臂20的末端，因此，安装孔22也开设在机臂20的末端。
机臂20包括相背的两个表面，包括上表面23及下表面24。安装孔22 贯穿上表面23及下表面24。
机臂20包括第一外侧壁25及第二外侧壁26，第一外侧壁25连接上表面23及下表面24。第二外侧壁26自上表面23延伸。如图5所示，第二外侧壁26自上表面23向上延伸。
第一外侧壁25呈曲面形，为了使得安装孔22的侧壁厚度均匀，以提高机臂20在生产时的合格率。靠近第一外侧壁25的安装孔22的内表面22a的形状与第一外侧壁25的形状配合。也即是说，靠近第一外侧壁25的安装孔22的内表面22a的形状与第一外侧壁25的形状相同或相似。
请一并参阅图7-图10，本发明实施方式的保护罩30能够拆卸地安装在机臂20上以用于保护设置在机臂20上的螺旋桨。保护罩30包括保护罩主体31、安装部32、限位部33及贴合壁34。
保护罩主体31为框体结构，具体地，保护罩主体31为以安装部32为中心的扇形框体。需要说明的是，扇形框体的中心为扇形框体的中心轴线附近的一个区域范围，因此，扇形框体的中心轴线可以位于安装部32上，也可以位于安装部32附近。在螺旋桨的径向上，保护罩主体31的尺寸大于螺旋桨的半径。
保护罩主体31包括圆弧段311、两个直线段312及安装段313。两个直线段312分别与圆弧段311的两端连接。圆弧段311与直线段312的连接处圆弧过渡。两个直线段312的另一端与安装段313连接，安装部32位于安装段313。
保护罩主体31还包括相背的第一面314及第二面315，具体地，如图9的方位所示，第二面315位于第一面314的下方。第二面315开设有凹槽3141，安装部32从凹槽3141的底面3142延伸。
具体地，安装部32从凹槽3141的底面3142向下延伸。为了使得机臂20与保护罩30的安装结构更加紧凑，机臂20部分地收容在凹槽3141内。凹槽3141的底面3142与机臂20的上表面23紧贴。
保护罩主体31开设有贯通第一面314及第二面315的通孔31a。具体地，通孔31a贯通凹槽3141的底面3142及第一面314。
保护罩主体31还开设有一个缺口316，缺口316与凹槽3141连通。缺口316的侧壁3161与机臂20的第二外侧壁26配合。缺口316的侧壁3161与机臂20的第二外侧壁26的形状大致相同。如图6所示，第二外侧壁26的形状为圆弧形，因此，缺口316的侧壁3161也为也为圆弧形。
安装部32包括本体321及卡勾322。本体321自保护罩主体31延伸。卡勾322位于本体321的远离保护罩主体31一端。本体321用于穿过机臂20，卡勾322用于与机臂20配合以使保护罩30能够拆卸地安装在机臂20上。连接本体321设置在通孔31a的周缘。
请结合图11，本实施方式中，卡勾322包括卡紧面3221及连接面3222。卡紧面3221自本体321延伸且与本体321之间的夹角θ为锐角或直角。连接面3222连接卡紧面3221及本体321。连接面3222与卡紧面3221之间的夹角α为锐角。
本实施方式中，安装部32沿自上表面23向下表面24的方向穿过安装孔22，卡紧面3221扣合在下表面24上。
本实施方式中，限位部33从凹槽3141的底面3142延伸。限位部33抵靠在安装孔22的内表面22a上。
具体地，限位部33与安装部32间隔设置。限位部33的延伸方向与安装部32的延伸方向相同。如图9所示，限位部33及安装部32均从凹槽3141的底面3142向下延伸。限位部33的数量为两个，两个限位部33分别设置在安装部32相背的两侧。
本实施方式中，贴合壁34自保护罩主体31延伸并与机臂20的第一外侧壁25贴紧。
需要说明的是，安装部32具有一定的弹性。请结合图4，当安装保护罩30时，安装部32发生弹性形变，连接面3222将卡勾322导入安装孔22 内，并且限位部33抵靠在安装孔22的内表面22a上，保护罩30沿着安装孔22的孔深方向移动，当保护罩30移动至预定位置时，安装部32恢复形变，卡紧面3221扣合在下表面24上，从而完成保护罩30的安装。
当需要拆卸保护罩30时，先使安装部32发生弹性变形，以使卡紧面3221与下表面24脱离，然后使安装部32及限位部33从安装孔22中退出，从而可以使得保护罩30从机臂20上拆卸下来。
本发明实施方式的保护罩30由于使用卡勾322能够拆卸地安装在机臂20上，使得保护罩30拆装方便、耗时少，且不需要额外的工具。
本体321设置在通孔31a的周缘使得安装部32具有较大的弹性形变空间，使得安装部32在失效前可以承受较大的外力。
保护罩主体31为以安装部32为中心的扇形框体使得保护罩主体31的轮廓可以与螺旋桨的旋转轨迹相配，使得保护罩30与螺旋桨配合更加紧凑。另外，保护罩主体31为扇形框体可以减少保护罩30的材料，从而可以进一步降低保护罩30的重量。
保护罩主体31的尺寸大于螺旋桨的半径使得保护罩30可以防止螺旋桨伸出保护罩30外，从而可以防止螺旋桨在径向上与障碍物触碰，起到了保护螺旋的作用。
圆弧段311与螺旋桨径向的末端运动轨迹对应，使得螺旋桨与保护罩主体31配合更加紧凑，有利于较小无人飞行器100的体积。
圆弧段311与直线段312的连接处圆弧过渡，使得圆弧段311与直线段312的连接处的内应力较小，可以避免圆弧段311与直线段312的连接处在生产时出现裂纹或断裂等制造缺陷，从而可以提高保护罩30生成的合格率。
缺口316的侧壁3161与机臂20的第二外侧壁26配合使得保护罩30与机臂20的配合结构更加紧凑。
连接面3222与卡紧面3221之间的夹角α为锐角，使得连接面3222相对于卡紧面3221为一斜面。连接面3222可以导引安装部32穿过机臂20， 使得安装部32安装更加方便。
限位部33抵靠在安装孔22的内表面22a可以增强保护罩30与机臂20的连接强度，提高保护罩30安装的稳定性。另外，限位部33可以限制保护罩30相对于机臂20转动。
贴合壁34贴紧在第一外侧壁25不仅使得保护罩30与机臂20的结构结构紧凑，还可以增加保护罩30与机臂20的连接面积，从而可以保证保护罩30可以稳定地安装在机臂20上。
在某些实施方式中，机臂20上延伸形成安装部，保护罩主体31上开设有安装孔，安装部包括自机臂20延伸的本体及位于本体的远离机臂20一端的卡勾，本体用于穿过安装孔，卡勾用于与保护罩主体31配合以使保护罩能够拆卸地安装在机臂20上。
在某些实施方式中，保护罩30为一体成型结构。例如，保护罩30的材料为塑料，保护罩30可以通过注射成型工艺形成。
保护罩30为一体成型结构可以减少保护罩30零件的数量，可以减少保护罩30的生产工艺，从而降低保护罩30的成本。另外，保护罩30使用塑料制成，较金属材料制成，可以降低保护罩30的重量，从而可以降低无人飞行器100的重量，有利于提高无人飞行器100续航能力。
在某些实施方式中，保护罩主体31为以安装部32为中心的近三角形框体、圆形框体或椭圆形框体等形状，只要能起到保护螺旋桨的作用即可。
在某些实施方式中，安装部32可从第二面315延伸。也就是说，在其他实施方式中，可以省略凹槽3141，安装部32直接从第二面315向下延伸。如此使得保护罩30的结构简单，制造成本较低。
同样地，在省略凹槽3141时，限位部33可以直接从第二面315延伸。
在某些实施方式中，限位部33的数量可以为两个以外的其他数量，例如，限位部33的数量为1个、3个或4个等。限位部33可以与安装部32抵靠在一起。
在某些实施方式中，第二外侧壁26的形状和缺口316的侧壁3161的形状可为抛物线形或直线形等形状。
在某些实施方式中，为了使保护罩30的结构更加简单，贴合壁34可以省略。
在本说明书的描述中，参考术语“一个实施方式”、“某些实施方式”、“示意性实施方式”、“示例”、“具体示例”、或“一些示例”等的描述意指结合所述实施方式或示例描述的具体特征、结构、材料或者特点包含于本发明的至少一个实施方式或示例中。在本说明书中，对上述术语的示意性表述不一定指的是相同的实施方式或示例。而且，描述的具体特征、结构、材料或者特点可以在任何的一个或多个实施方式或示例中以合适的方式结合。
此外，术语“第一”、“第二”仅用于描述目的，而不能理解为指示或暗示相对重要性或者隐含指明所指示的技术特征的数量。由此，限定有“第一”、“第二”的特征可以明示或者隐含地包括至少一个该特征。在本发明的描述中，“多个”的含义是至少两个，例如两个，三个等，除非另有明确具体的限定。
尽管已经示出和描述了本发明的实施方式，本领域的普通技术人员可以理解：在不脱离本发明的原理和宗旨的情况下可以对这些实施方式进行多种变化、修改、替换和变型，本发明的范围由权利要求及其等同物限定。

Claims (18)

  1. 一种保护罩，用于保护设置在机臂上的螺旋桨，其特征在于，所述保护罩包括：
    保护罩主体；及
    安装部，所述安装部包括自所述保护罩主体延伸的本体及位于所述本体的远离所述保护罩主体一端的卡勾，所述本体用于穿过所述机臂，所述卡勾用于与所述机臂配合以使所述保护罩能够拆卸地安装在所述机臂上。
  2. 如权利要求1所述的保护罩，其特征在于，所述保护罩主体包括相背的第一面及第二面，所述第二面开设有凹槽，所述安装部从所述凹槽的底面延伸。
  3. 如权利要求2所述的保护罩，其特征在于，所述保护罩包括至少一个限位部，所述限位部从所述凹槽的底面延伸。
  4. 如权利要求2所述的保护罩，其特征在于，所述保护罩主体开设有贯通所述第一面及所述凹槽的底面的通孔，所述本体设置在所述通孔周缘。
  5. 如权利要求2所述的保护罩，其特征在于，所述保护罩主体开设有个缺口，所述缺口与所述凹槽连通，所述缺口的侧壁与所述机臂的一侧壁配合。
  6. 如权利要求1所述的保护罩，其特征在于，所述卡勾包括卡紧面及连接面，所述卡紧面自所述本体延伸且与所述本体之间的夹角为锐角或直角，所述连接面连接所述卡紧面及所述本体。
  7. 如权利要求6所述的保护罩，其特征在于，所述连接面与所述卡紧面之间的夹角为锐角。
  8. 如权利要求1所述的保护罩，其特征在于，所述保护罩还包括贴合壁，所述贴合壁自所述保护罩主体延伸并与所述机臂的一侧壁贴紧。
  9. 如权利要求1所述的保护罩，其特征在于，所述保护罩主体为框体 结构，包括圆弧段、分别与所述圆弧段的两端连接的两个直线段及安装段，所述两个直线段的另一端与所述安装段连接，所述安装部位于所述安装段。
  10. 一种无人飞行器，其特征在于，包括：
    机臂；及
    保护罩，所述保护罩包括保护罩主体；
    所述机臂和所述保护罩主体其中一个上开设有安装孔，另一个上延伸形成安装部，所述安装部包括自所述机臂或保护罩主体延伸的本体及位于所述本体的远离所述机臂或保护罩主体一端的卡勾，所述本体用于穿过所述安装孔，所述卡勾用于与所述保护罩主体或机臂配合以使所述保护罩能够拆卸地安装在所述机臂上。
  11. 如权利要求10所述的无人飞行器，其特征在于，所述保护罩主体包括相背的第一面及第二面，所述第二面开设有凹槽，所述安装部从所述凹槽的底面延伸；
    所述机臂部分地收容在所述凹槽内。
  12. 如权利要求11所述的无人飞行器，其特征在于，所述保护罩包括至少一个限位部，所述限位部从所述凹槽的底面延伸；
    所述机臂开设有安装孔，所述安装部穿过所述安装孔，所述限位部抵靠在所述安装孔的内表面上。
  13. 如权利要求11所述的无人飞行器，其特征在于，所述保护罩主体开设有个缺口，所述缺口与所述凹槽连通，所述缺口的侧壁与所述机臂的一侧壁配合。
  14. 如权利要求11所述的无人飞行器，其特征在于，所述保护罩主体开设有贯通所述第一面及所述凹槽的底面的通孔，所述本体设置在所述通孔周缘。
  15. 如权利要求10所述的无人飞行器，其特征在于，所述卡勾包括卡紧面及连接面，所述卡紧面自所述本体延伸且与所述本体之间的夹角为锐角 或直角，所述连接面连接所述卡紧面及所述本体；
    所述机臂包括相背的上表面及下表面，所述机臂开设有贯穿所述上表面及所述下表面的所述安装孔，所述安装部沿自所述上表面向所述下表面的方向穿过所述安装孔，所述卡紧面扣合在所述下表面上。
  16. 如权利要求15所述的无人飞行器，其特征在于，所述连接面与所述卡紧面之间的夹角为锐角。
  17. 如权利要求10所述的无人飞行器，其特征在于，所述保护罩还包括贴合壁，所述机臂包括连接所述上表面与所述下表面的侧壁，所述贴合壁自所述保护罩主体延伸并与所述侧壁贴紧。
  18. 如权利要求10所述的无人飞行器，其特征在于，所述保护罩主体为框体结构，包括圆弧段、分别与所述圆弧段的两端连接的两个直线段及安装段，所述两个直线段的另一端与所述安装段连接，所述安装部位于所述安装段。
PCT/CN2016/113275 2016-10-25 2016-12-29 保护罩及无人飞行器 Ceased WO2018076534A1 (zh)

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