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WO2019037037A1 - Propeller - Google Patents

Propeller Download PDF

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Publication number
WO2019037037A1
WO2019037037A1 PCT/CN2017/098847 CN2017098847W WO2019037037A1 WO 2019037037 A1 WO2019037037 A1 WO 2019037037A1 CN 2017098847 W CN2017098847 W CN 2017098847W WO 2019037037 A1 WO2019037037 A1 WO 2019037037A1
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WIPO (PCT)
Prior art keywords
blade
rigid body
propeller
soft side
soft
Prior art date
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Ceased
Application number
PCT/CN2017/098847
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French (fr)
Chinese (zh)
Inventor
田瑜
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Individual
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Individual
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Publication date
Application filed by Individual filed Critical Individual
Priority to PCT/CN2017/098847 priority Critical patent/WO2019037037A1/en
Publication of WO2019037037A1 publication Critical patent/WO2019037037A1/en
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
    • B64C11/00—Propellers, e.g. of ducted type; Features common to propellers and rotors for rotorcraft
    • B64C11/16—Blades
    • B64C11/20—Constructional features

Definitions

  • the invention relates to a propeller, in particular to a propeller of an unmanned aerial vehicle.
  • the existing unmanned aerial vehicles are usually driven by a propeller, so that the rotating propeller flying shovel is easy to injure the user during operation, so the aircraft usually cannot be accessed by hand during operation, nor can it be close to people to avoid injury.
  • the technical problem solved by the present invention is to provide a propeller in order to overcome the problem that the prior art propeller is easy to injure the user.
  • a propeller characterized by comprising at least one blade comprising a rigid body and a soft side joined to the rigid body, the soft side extending outwardly from the rigid body. Through the soft side, the blade does not cause damage when it reaches the human hand, and the rigid body ensures the rigidity of the main body of the blade, ensuring the thrust performance.
  • the material of the rigid body is plastic.
  • the material of the soft side is a PU material.
  • the rigid body comprises a base section and an extension section, the base section being located at a bottom end of the blade, the extension section extending from a bottom end of the blade to a tip end of the blade.
  • the connection strength of the bottom end of the blade can be ensured by the base section, and the deformation resistance of the blade can be increased by combining the longitudinally extending extension.
  • the soft side is disposed outside the extension.
  • the outer edge of the soft side is equidistant from the outer edge of the extension.
  • the length of the base segment is greater than 5 mm. Thereby, the connection strength of the base section can be sufficiently ensured.
  • the soft side is integrally formed with the rigid body.
  • the integrated soft side and rigid body provide greater strength.
  • the soft side is snapped to the rigid body.
  • the soft side can be separated and removed, which facilitates the replacement and maintenance of the soft side.
  • the soft side has a width greater than 10 mm. This repeatedly ensures the deformation of the soft side, so that the user is not easily injured.
  • the rigid body has a width greater than 5 mm. Thereby, the connection strength of the rigid body can be sufficiently ensured
  • the area of the soft side is 20% to 70% of the area of the blade. This ensures the deformation capacity of the blade and avoids the loss of strength caused by excessive deformation.
  • the outer edge of the soft side is equidistant from the outer edge of the rigid body.
  • the thickness of the blade decreases from the central portion to the both sides.
  • the positive progressive effect of the present invention is that, by the use of the present invention, the soft side edges prevent the blade from injuring when it reaches the human hand, while the rigid body ensures the rigidity of the main body of the blade and ensures the thrust performance.
  • Fig. 1 is a schematic structural view of a propeller according to a first embodiment of the present invention.
  • FIG. 2 is a schematic structural view of a blade according to Embodiment 1 of the present invention.
  • FIG. 3 is a schematic cross-sectional structural view of a blade according to Embodiment 1 of the present invention.
  • FIG. 4 is a schematic structural view of a blade according to Embodiment 2 of the present invention.
  • Figure 5 is a schematic view showing the structure of a blade according to Embodiment 3 of the present invention.
  • this embodiment discloses a propeller.
  • the propeller of the present invention includes a blade 1, a blade 2, and a blade 3.
  • a blade 1 As shown in FIG. 1, the propeller of the present invention includes a blade 1, a blade 2, and a blade 3.
  • different numbers of blades may also be included in other embodiments.
  • the blade includes a rigid body 11 and a soft side 12 attached to the rigid body 11.
  • the soft side 12 extends outwardly from the rigid body 11. Through the soft side 12, the blade does not cause damage when it reaches the human hand, while the rigid body 11 ensures the rigidity of the body of the blade 1 and ensures the thrust performance.
  • the rigid body 11 includes a base section 111 at the bottom end of the blade 1 and an extension section 112 extending from the bottom end of the blade 1 toward the top end of the blade 1.
  • the soft side 12 is disposed outside of the extension 112.
  • connection strength of the bottom end of the blade 1 can be ensured by the base section 111, and the deformation resistance of the blade 1 can be increased in combination with the longitudinally extending extension section 112.
  • the material of the rigid body 11 is plastic, and may also be provided as other rigid materials.
  • the length of the base segment 111 is greater than 5 mm. Thereby, the connection strength of the base section 111 can be sufficiently ensured.
  • the width of the soft side 12 is greater than 10 mm. This repeatedly ensures the deformation of the soft side, so that the user is not easily injured.
  • the width of the rigid body is greater than 5 mm. Thereby, the connection strength of the rigid body can be sufficiently ensured
  • the area of the soft side is 20% to 70% of the area of the blade. This ensures the deformation capacity of the blade and avoids the loss of strength caused by excessive deformation. In other embodiments, different parameters may also be changed.
  • the thickness of the blade of this embodiment decreases from the center to the both sides.
  • the soft side 12 is snapped onto the rigid body 11.
  • the soft side 12 can be separated and removed, which facilitates the soft side Replacement and maintenance of 12.
  • it can also be changed to a one-piece structure.
  • the material of the soft side 12 is a PU material (polyurethane material), and may be set as other soft materials.
  • the blade 2 and the blade 3 may also adopt the same structure as the blade 1.
  • the positive progressive effect of the present invention is that, by the use of the present invention, the soft side edges prevent the blade from injuring when it reaches the human hand, while the rigid body ensures the rigidity of the main body of the blade and ensures the thrust performance.
  • the blade 1 includes a rigid body 11 and a soft side 12 attached to the rigid body 11.
  • the soft side 12 extends outwardly from the rigid body 11. Through the soft side 12, the blade does not cause damage when it reaches the human hand, while the rigid body 11 ensures the rigidity of the body of the blade 1 and ensures the thrust performance.
  • the rigid body 11 includes a base section 111 at the bottom end of the blade 1 and an extension section 112 extending from the bottom end of the blade 1 toward the top end of the blade 1.
  • the soft side 12 is disposed outside of the extension 112.
  • connection strength of the bottom end of the blade 1 can be ensured by the base section 111, and the deformation resistance of the blade 1 can be increased in combination with the longitudinally extending extension section 112.
  • the outer edge of the soft side 12 is equidistant from the outer edge of the extension 112.
  • the blade 1 includes a rigid body 11 and a soft side 12 attached to the rigid body 11.
  • the soft side 12 extends outwardly from the rigid body 11. Through the soft side 12, the blade does not cause damage when it reaches the human hand, while the rigid body 11 ensures the rigidity of the body of the blade 1 and ensures the thrust performance.
  • the outer edge of the soft side 12 is equidistant from the outer edge of the rigid body 11.

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  • Engineering & Computer Science (AREA)
  • Aviation & Aerospace Engineering (AREA)
  • Structures Of Non-Positive Displacement Pumps (AREA)

Abstract

A propeller, comprising at least one blade (1, 2, 3), the blade (1, 2, 3) comprising a rigid body (11) and a soft edge (12) connected to the rigid body (11), the soft edge (12) extending outwards from the rigid body (11). Due to the presence of the soft edge (12) if the blade (1, 2, 3) hits a user's hand injury is avoided. The rigid body (11) ensures the stiffness of the body of the blade (1, 2, 3), ensuring thrust performance.

Description

螺旋桨propeller 技术领域Technical field

本发明涉及一种螺旋桨，特别是一种无人飞行器的螺旋桨。The invention relates to a propeller, in particular to a propeller of an unmanned aerial vehicle.

背景技术Background technique

现有的无人飞行器通常采用螺旋桨驱动，因此在运行时，旋转的螺旋桨飞铲容易伤到使用者，因此飞行器在运行时通常不能用手去接，也不能靠近人，以避免伤害。The existing unmanned aerial vehicles are usually driven by a propeller, so that the rotating propeller flying shovel is easy to injure the user during operation, so the aircraft usually cannot be accessed by hand during operation, nor can it be close to people to avoid injury.

发明内容Summary of the invention

本发明解决的技术问题是为了克服现有技术螺旋桨容易伤到使用者的问题，提供一种螺旋桨。The technical problem solved by the present invention is to provide a propeller in order to overcome the problem that the prior art propeller is easy to injure the user.

本发明是通过下述技术方案来解决上述技术问题：The present invention solves the above technical problems by the following technical solutions:

一种螺旋桨，其特点在于，包括至少一个叶片，所述叶片包括刚性主体以及连接在所述刚性主体上的软质侧边，所述软质侧边自所述刚性主体向外延伸。通过软质侧边，使得叶片在达到人手时不会产生伤害，同时刚性主体保证了叶片的主体的刚度，保证了推力性能。A propeller characterized by comprising at least one blade comprising a rigid body and a soft side joined to the rigid body, the soft side extending outwardly from the rigid body. Through the soft side, the blade does not cause damage when it reaches the human hand, and the rigid body ensures the rigidity of the main body of the blade, ensuring the thrust performance.

较佳地，所述刚性主体的材料为塑料。Preferably, the material of the rigid body is plastic.

较佳地，所述软质侧边的材料为PU材料。Preferably, the material of the soft side is a PU material.

较佳地，所述刚性主体包括基段和延伸段，所述基段位于所述叶片的底端，所述延伸段自所述叶片的底端向所述叶片的顶端延伸。通过基段可以保证叶片底端的连接强度，结合纵向延伸的延伸段可以增加叶片的防变形能力。Preferably, the rigid body comprises a base section and an extension section, the base section being located at a bottom end of the blade, the extension section extending from a bottom end of the blade to a tip end of the blade. The connection strength of the bottom end of the blade can be ensured by the base section, and the deformation resistance of the blade can be increased by combining the longitudinally extending extension.

较佳地，所述软质侧边设置于所述延伸段的外侧。Preferably, the soft side is disposed outside the extension.

较佳地，所述软质侧边的外缘与所述延伸段的外缘等距。Preferably, the outer edge of the soft side is equidistant from the outer edge of the extension.

较佳地，所述基段的长度大于5mm。由此可以充分保证基段的连接强度。 Preferably, the length of the base segment is greater than 5 mm. Thereby, the connection strength of the base section can be sufficiently ensured.

较佳地，所述软质侧边与所述刚性主体为一体成形。一体化的软质侧边和刚性主体提供了更强的强度。Preferably, the soft side is integrally formed with the rigid body. The integrated soft side and rigid body provide greater strength.

较佳地，所述软质侧边卡接于所述刚性主体。由此软质侧边可以进行分离拆除，方便了软质侧边的更换和维护。Preferably, the soft side is snapped to the rigid body. The soft side can be separated and removed, which facilitates the replacement and maintenance of the soft side.

较佳地，所述软质侧边的宽度大于10mm。由此重复保证软质侧边的变形幅度，使得用户不容易受伤。Preferably, the soft side has a width greater than 10 mm. This repeatedly ensures the deformation of the soft side, so that the user is not easily injured.

较佳地，所述刚性主体的宽度大于5mm。由此可以充分保证刚性主体的连接强度Preferably, the rigid body has a width greater than 5 mm. Thereby, the connection strength of the rigid body can be sufficiently ensured

较佳地，所述软质侧边的面积为所述叶片的面积的20％-70％。由此保证了叶片的变形能力，又避免了过度变形造成的强度损失。Preferably, the area of the soft side is 20% to 70% of the area of the blade. This ensures the deformation capacity of the blade and avoids the loss of strength caused by excessive deformation.

较佳地，所述软质侧边的外缘与所述刚性主体的外缘等距。Preferably, the outer edge of the soft side is equidistant from the outer edge of the rigid body.

较佳地，所述叶片的厚度自中部向两侧减少。Preferably, the thickness of the blade decreases from the central portion to the both sides.

本发明中，上述优选条件在符合本领域常识的基础上可任意组合，即得本发明的各较佳实施例。In the present invention, the above preferred conditions can be arbitrarily combined on the basis of common knowledge in the art, that is, the preferred embodiments of the present invention are obtained.

本发明的积极进步效果在于：通过本发明的运用，软质侧边使得叶片在达到人手时不会产生伤害，同时刚性主体保证了叶片的主体的刚度，保证了推力性能。The positive progressive effect of the present invention is that, by the use of the present invention, the soft side edges prevent the blade from injuring when it reaches the human hand, while the rigid body ensures the rigidity of the main body of the blade and ensures the thrust performance.

附图说明DRAWINGS

图1为本发明实施例1的螺旋桨的结构示意图。Fig. 1 is a schematic structural view of a propeller according to a first embodiment of the present invention.

图2为本发明实施例1的叶片的结构示意图。2 is a schematic structural view of a blade according to Embodiment 1 of the present invention.

图3为本发明实施例1的叶片的剖面结构示意图。3 is a schematic cross-sectional structural view of a blade according to Embodiment 1 of the present invention.

图4为本发明实施例2的叶片的结构示意图。4 is a schematic structural view of a blade according to Embodiment 2 of the present invention.

图5为本发明实施例3的叶片的结构示意图。Figure 5 is a schematic view showing the structure of a blade according to Embodiment 3 of the present invention.

附图标记说明：Description of the reference signs:

叶片1；叶片2；叶片3；叶片4；刚性主体11；基段111；延伸段112； 软质侧边12。Blade 1; blade 2; blade 3; blade 4; rigid body 11; base segment 111; extension segment 112; Soft side 12.

具体实施方式Detailed ways

实施例1Example 1

如图1-2所示，本实施例公开了一种螺旋桨。As shown in Figures 1-2, this embodiment discloses a propeller.

如图1所示，本发明的螺旋桨包括叶片1、叶片2和叶片3。当然在其他实施例中也可以包括不同数量的叶片。As shown in FIG. 1, the propeller of the present invention includes a blade 1, a blade 2, and a blade 3. Of course, different numbers of blades may also be included in other embodiments.

如图1和图2所示，叶片包括刚性主体11以及连接在刚性主体11上的软质侧边12。软质侧边12自刚性主体11向外延伸。通过软质侧边12，使得叶片在达到人手时不会产生伤害，同时刚性主体11保证了叶片1的主体的刚度，保证了推力性能。As shown in Figures 1 and 2, the blade includes a rigid body 11 and a soft side 12 attached to the rigid body 11. The soft side 12 extends outwardly from the rigid body 11. Through the soft side 12, the blade does not cause damage when it reaches the human hand, while the rigid body 11 ensures the rigidity of the body of the blade 1 and ensures the thrust performance.

刚性主体11包括基段111和延伸段112，基段111位于叶片1的底端，延伸段112自叶片1的底端向叶片1的顶端延伸。软质侧边12设置于延伸段112的外侧。The rigid body 11 includes a base section 111 at the bottom end of the blade 1 and an extension section 112 extending from the bottom end of the blade 1 toward the top end of the blade 1. The soft side 12 is disposed outside of the extension 112.

通过基段111可以保证叶片1的底端的连接强度，结合纵向延伸的延伸段112可以增加叶片1的防变形能力。The connection strength of the bottom end of the blade 1 can be ensured by the base section 111, and the deformation resistance of the blade 1 can be increased in combination with the longitudinally extending extension section 112.

本实施例中，刚性主体11的材料为塑料，也可以设置为其他刚性材料。In this embodiment, the material of the rigid body 11 is plastic, and may also be provided as other rigid materials.

本实施例中，基段111的长度大于5mm。由此可以充分保证基段111的连接强度。软质侧边12的宽度大于10mm。由此重复保证软质侧边的变形幅度，使得用户不容易受伤。刚性主体的宽度大于5mm。由此可以充分保证刚性主体的连接强度In this embodiment, the length of the base segment 111 is greater than 5 mm. Thereby, the connection strength of the base section 111 can be sufficiently ensured. The width of the soft side 12 is greater than 10 mm. This repeatedly ensures the deformation of the soft side, so that the user is not easily injured. The width of the rigid body is greater than 5 mm. Thereby, the connection strength of the rigid body can be sufficiently ensured

此外，软质侧边的面积为所述叶片的面积的20％-70％。由此保证了叶片的变形能力，又避免了过度变形造成的强度损失。在其他实施例中，也可以改为不同的参数。Further, the area of the soft side is 20% to 70% of the area of the blade. This ensures the deformation capacity of the blade and avoids the loss of strength caused by excessive deformation. In other embodiments, different parameters may also be changed.

如图3所示，本实施例的叶片的厚度自中部向两侧减少。且软质侧边12卡接于刚性主体11。由此软质侧边12可以进行分离拆除，方便了软质侧边 12的更换和维护。当然在其他实施例中也可以改为一体式结构。As shown in Fig. 3, the thickness of the blade of this embodiment decreases from the center to the both sides. The soft side 12 is snapped onto the rigid body 11. The soft side 12 can be separated and removed, which facilitates the soft side Replacement and maintenance of 12. Of course, in other embodiments, it can also be changed to a one-piece structure.

本实施例中，软质侧边12的材料为PU材料(聚氨酯材料)，也可以设置为其他软质材料。In this embodiment, the material of the soft side 12 is a PU material (polyurethane material), and may be set as other soft materials.

在其他实施例中，叶片2和叶片3也可以采用与叶片1相同的结构。In other embodiments, the blade 2 and the blade 3 may also adopt the same structure as the blade 1.

本发明的积极进步效果在于：通过本发明的运用，软质侧边使得叶片在达到人手时不会产生伤害，同时刚性主体保证了叶片的主体的刚度，保证了推力性能。The positive progressive effect of the present invention is that, by the use of the present invention, the soft side edges prevent the blade from injuring when it reaches the human hand, while the rigid body ensures the rigidity of the main body of the blade and ensures the thrust performance.

实施例2Example 2

如4所示，叶片1包括刚性主体11以及连接在刚性主体11上的软质侧边12。软质侧边12自刚性主体11向外延伸。通过软质侧边12，使得叶片在达到人手时不会产生伤害，同时刚性主体11保证了叶片1的主体的刚度，保证了推力性能。As shown in 4, the blade 1 includes a rigid body 11 and a soft side 12 attached to the rigid body 11. The soft side 12 extends outwardly from the rigid body 11. Through the soft side 12, the blade does not cause damage when it reaches the human hand, while the rigid body 11 ensures the rigidity of the body of the blade 1 and ensures the thrust performance.

刚性主体11包括基段111和延伸段112，基段111位于叶片1的底端，延伸段112自叶片1的底端向叶片1的顶端延伸。软质侧边12设置于延伸段112的外侧。The rigid body 11 includes a base section 111 at the bottom end of the blade 1 and an extension section 112 extending from the bottom end of the blade 1 toward the top end of the blade 1. The soft side 12 is disposed outside of the extension 112.

通过基段111可以保证叶片1的底端的连接强度，结合纵向延伸的延伸段112可以增加叶片1的防变形能力。The connection strength of the bottom end of the blade 1 can be ensured by the base section 111, and the deformation resistance of the blade 1 can be increased in combination with the longitudinally extending extension section 112.

本实施例中，软质侧边12的外缘与延伸段112的外缘等距。In this embodiment, the outer edge of the soft side 12 is equidistant from the outer edge of the extension 112.

实施例3Example 3

如5所示，叶片1包括刚性主体11以及连接在刚性主体11上的软质侧边12。软质侧边12自刚性主体11向外延伸。通过软质侧边12，使得叶片在达到人手时不会产生伤害，同时刚性主体11保证了叶片1的主体的刚度，保证了推力性能。As shown in FIG. 5, the blade 1 includes a rigid body 11 and a soft side 12 attached to the rigid body 11. The soft side 12 extends outwardly from the rigid body 11. Through the soft side 12, the blade does not cause damage when it reaches the human hand, while the rigid body 11 ensures the rigidity of the body of the blade 1 and ensures the thrust performance.

本实施例中，软质侧边12的外缘与刚性主体11的外缘等距。In the present embodiment, the outer edge of the soft side 12 is equidistant from the outer edge of the rigid body 11.

虽然以上描述了本发明的具体实施方式，但是本领域的技术人员应当理解，这些仅是举例说明，在不背离本发明的原理和实质的前提下，可以对这 些实施方式做出多种变更或修改。因此，本发明的保护范围由所附权利要求书限定。 While the invention has been described with respect to the embodiments of the present invention, it is understood that Many variations or modifications are made to these embodiments. Accordingly, the scope of the invention is defined by the appended claims.

Claims (14)

一种螺旋桨，其特征在于，包括至少一个叶片，所述叶片包括刚性主体以及连接在所述刚性主体上的软质侧边，所述软质侧边自所述刚性主体向外延伸。A propeller characterized by comprising at least one blade comprising a rigid body and a soft side joined to the rigid body, the soft side extending outwardly from the rigid body. 如权利要求1所述的螺旋桨，其特征在于，所述刚性主体的材料为塑料。The propeller of claim 1 wherein the rigid body is made of plastic. 如权利要求1所述的螺旋桨，其特征在于，所述软质侧边的材料为PU材料。The propeller of claim 1 wherein said soft side material is a PU material. 如权利要求1-3中至少一项所述的螺旋桨，其特征在于，所述刚性主体包括基段和延伸段，所述基段位于所述叶片的底端，所述延伸段自所述叶片的底端向所述叶片的顶端延伸。A propeller according to at least one of claims 1 to 3, wherein the rigid body comprises a base section and an extension section, the base section being located at a bottom end of the blade, the extension section being from the blade The bottom end extends toward the top end of the blade. 如权利要求4所述的螺旋桨，其特征在于，所述软质侧边设置于所述延伸段的外侧。The propeller of claim 4 wherein said soft sides are disposed outside of said extension. 如权利要求4所述的螺旋桨，其特征在于，所述软质侧边的外缘与所述延伸段的外缘等距。The propeller of claim 4 wherein the outer edge of said soft side is equidistant from the outer edge of said extension. 如权利要求4所述的螺旋桨，其特征在于，所述基段的长度大于5mm。The propeller of claim 4 wherein said base section has a length greater than 5 mm. 如权利要求1-7中至少一项所述的螺旋桨，其特征在于，所述软质侧边与所述刚性主体为一体成形。A propeller according to at least one of claims 1 to 7, wherein the soft side is integrally formed with the rigid body. 如权利要求1-7中至少一项所述的螺旋桨，其特征在于，所述软质侧边卡接于所述刚性主体。The propeller according to at least one of claims 1 to 7, wherein the soft side is snapped to the rigid body. 如权利要求1-9中至少一项所述的螺旋桨，其特征在于，所述软质侧边的宽度大于10mm。The propeller according to at least one of claims 1 to 9, wherein the soft side has a width greater than 10 mm. 如权利要求1-9中至少一项所述的螺旋桨，其特征在于，所述刚性主体的宽度大于5mm。A propeller according to at least one of claims 1 to 9, wherein the rigid body has a width greater than 5 mm. 如权利要求1-9中至少一项所述的螺旋桨，其特征在于，所述软质 侧边的面积为所述叶片的面积的20％-70％。Propeller according to at least one of claims 1 to 9, wherein the soft The area of the side is 20% to 70% of the area of the blade. 如权利要求1-3中至少一项所述的螺旋桨，其特征在于，所述软质侧边的外缘与所述刚性主体的外缘等距。A propeller according to at least one of claims 1 to 3, wherein the outer edge of the soft side is equidistant from the outer edge of the rigid body. 如权利要求1-9中至少一项所述的螺旋桨，其特征在于，所述叶片的厚度自中部向两侧减少。 A propeller according to at least one of claims 1 to 9, wherein the thickness of the blade decreases from the central portion to the both sides.
PCT/CN2017/098847 2017-08-24 2017-08-24 Propeller Ceased WO2019037037A1 (en)

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Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN2734291Y (en) * 2003-08-12 2005-10-19 麦特尔公司 Propeller blade with buffering edge on active toy plane
CN2899887Y (en) * 2005-09-29 2007-05-16 许侦 Helicopter blade with protective soft rubber
KR20120102880A (en) * 2011-03-09 2012-09-19 유세혁 Octocopter and control methods thereof
CN104787282A (en) * 2015-04-03 2015-07-22 郑伟 Propeller with metal leading edge and manufacturing technology
CN206202665U (en) * 2016-11-09 2017-05-31 亿航智能设备（广州）有限公司 Propeller, Power Component and aircraft

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN2734291Y (en) * 2003-08-12 2005-10-19 麦特尔公司 Propeller blade with buffering edge on active toy plane
CN2899887Y (en) * 2005-09-29 2007-05-16 许侦 Helicopter blade with protective soft rubber
KR20120102880A (en) * 2011-03-09 2012-09-19 유세혁 Octocopter and control methods thereof
CN104787282A (en) * 2015-04-03 2015-07-22 郑伟 Propeller with metal leading edge and manufacturing technology
CN206202665U (en) * 2016-11-09 2017-05-31 亿航智能设备（广州）有限公司 Propeller, Power Component and aircraft

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