WO2019024202A1 - 桨叶、螺旋桨、动力组件及无人飞行器 - Google Patents

桨叶、螺旋桨、动力组件及无人飞行器 Download PDF

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Publication number
WO2019024202A1
WO2019024202A1 PCT/CN2017/102974 CN2017102974W WO2019024202A1 WO 2019024202 A1 WO2019024202 A1 WO 2019024202A1 CN 2017102974 W CN2017102974 W CN 2017102974W WO 2019024202 A1 WO2019024202 A1 WO 2019024202A1
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Prior art keywords
blade
propeller
paddle
blades
protective layer
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PCT/CN2017/102974
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English (en)
French (fr)
Inventor
陈鹏
邓涛
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深圳市大疆创新科技有限公司
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Application filed by 深圳市大疆创新科技有限公司 filed Critical 深圳市大疆创新科技有限公司
Priority to CN201780085665.9A priority Critical patent/CN110431077A/zh
Publication of WO2019024202A1 publication Critical patent/WO2019024202A1/zh

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    • BPERFORMING OPERATIONS; TRANSPORTING
    • B64AIRCRAFT; AVIATION; COSMONAUTICS
    • B64CAEROPLANES; HELICOPTERS
    • B64C27/00Rotorcraft; Rotors peculiar thereto
    • B64C27/32Rotors
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B64AIRCRAFT; AVIATION; COSMONAUTICS
    • B64CAEROPLANES; HELICOPTERS
    • B64C27/00Rotorcraft; Rotors peculiar thereto
    • B64C27/32Rotors
    • B64C27/46Blades
    • B64C27/473Constructional features
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B64AIRCRAFT; AVIATION; COSMONAUTICS
    • B64CAEROPLANES; HELICOPTERS
    • B64C27/00Rotorcraft; Rotors peculiar thereto
    • B64C27/32Rotors
    • B64C27/46Blades
    • B64C27/473Constructional features
    • B64C27/50Blades foldable to facilitate stowage of aircraft

Definitions

  • the invention relates to the technical field of drones, in particular to a blade, a propeller, a power component and an unmanned aerial vehicle.
  • the propeller on the unmanned aerial vehicle is a key component of the unmanned aerial vehicle, and the propeller provides power for the flight of the unmanned aerial vehicle through the high-speed rotation of the propeller.
  • the propeller blades once the human body is accidentally touched, the sharp leading edge of the propeller will cause great harm to people, and there is a great safety hazard.
  • the present invention proposes a novel structure of blades, propellers, power components and unmanned aerial vehicles to solve the above technical problems.
  • a blade for use in a propeller having opposite paddles and tips, the blade including being located between the paddle and the tip a leading edge and a trailing edge; wherein the blade further comprises a blade body and a protective layer, the blade body extending from the blade root to the blade tip, the protective layer being disposed on the blade body The upper side is located at the leading edge.
  • the protective layer is formed on an end surface of the blade body by overmolding.
  • the protective layer extends from the paddle to the tip of the paddle.
  • the protective layer is located at an end surface of the blade body and forms the leading edge.
  • the end surface is a flat surface.
  • end face is perpendicular to the paddle plane in which the blade is located.
  • the maximum thickness of the leading edge is greater than or equal to the thickness of any of the blade bodies.
  • a propeller comprising: a hub and at least two blades as described in any one of the preceding claims.
  • the propeller is a folding paddle
  • the number of the blades is two
  • each of the blades is rotatably coupled to the hub.
  • the paddle of each of the blades is fixed to the hub.
  • the blades are two, and the two blades are integrally formed with the hub.
  • a power assembly comprising a drive member and a propeller according to any of the above, the propeller being coupled to the drive member via the hub.
  • an unmanned aerial vehicle comprising: a fuselage, an arm, a driving device, and a propeller according to any one of the above; the arm is coupled to the body The driving device is disposed on the arm, and the propeller is coupled to the driving device and rotated under the driving of the driving device.
  • the invention designs a blade with a novel structure, and a protective layer is arranged on the blade, and the protective layer is located at the front edge of the blade, thereby reducing the damage to the human after the blade hits the person and reducing the safety hazard. .
  • the invention designs a propeller comprising a hub and at least two blades, the blade is provided with a protective layer, the protective layer is located at the front edge of the blade, so that the blade can be reduced to the person after hitting the person The damage reduces the safety hazard.
  • the invention designs a power assembly comprising a driving member and a propeller of the invention, the blade on the propeller is provided with a protective layer, the protective layer is located at the leading edge of the blade, so that the blade can be reduced The harm to people after the arrival of people reduces the safety risks.
  • the invention designs an unmanned aerial vehicle comprising a fuselage, an arm, a driving device and a propeller, wherein the blade on the propeller is provided with a protective layer, the protective layer is located at the leading edge of the blade, thereby It can reduce the damage to the person after the paddle hits the person and reduce the safety hazard.
  • FIG. 1 is a perspective view of a blade according to an exemplary embodiment of the present invention.
  • FIG. 2 is a front elevational view of a blade shown in an exemplary embodiment of the invention.
  • Figure 3 is a side elevational view of a blade of an exemplary embodiment of the invention.
  • Figure 4 is a schematic cross-sectional view taken along line A-A of Figure 3;
  • FIG. 5 is a schematic structural view of a blade according to still another exemplary embodiment of the present invention.
  • FIG. 6 is a schematic structural view of a power assembly according to an exemplary embodiment of the present invention.
  • FIG. 7 is a schematic structural view of an unmanned aerial vehicle according to an exemplary embodiment of the present invention.
  • the blade 1 of the embodiment of the present invention is applied to the propeller 10.
  • the blade 1 has opposite paddles 11 and tips 12, and the blade 1 includes a leading edge 15 and a trailing edge 16 between the blade root 11 and the tip 12.
  • the blade 1 further comprises a blade body 13 and a protective layer 14 extending from the blade root 11 to the blade tip 12, and the protective layer 14 is disposed on the blade body and located at the leading edge 15.
  • the passage of the protective layer 14 is such that the blade 1 does not scratch or injure a person during the high-speed rotation even if the leading edge 15 of the blade 1 hits a person.
  • the protective layer 14 may be made of a soft rubber material, and the protective layer 14 is passed through two.
  • the secondary injection molding is formed on the end surface of the blade body 13.
  • the blade body 13 may be formed by in-mold injection molding using a hard material, and then the blade 1 having the leading edge 15 as a soft rubber material is processed by in-mold over-molding, that is, disposed on the blade body 13 and located at the front Protective layer 14 of edge 15.
  • the protective layer 14 may also be made of other soft materials, such as a foam material, which may be fixed to the blade body 13 by an adhesive layer and located at the leading edge. 15.
  • the protective layer 14 extends from the paddle root 11 to the tip end 12, i.e., the protective layer 14 is formed over the entire leading edge 15. This design simplifies the structure of the mold used in the two injection molding processes, resulting in lower production costs and easy mass production.
  • the protective layer 14 may also be formed on the leading edge 15 near the tip 12 as the tip 10 is first contacted by a person when the propeller 10 rotates. section.
  • the protective layer 14 is located at the end face 121 of the blade body 13 and forms a leading edge 15.
  • the end surface 121 may be a flat surface, and the planar arrangement may cause a corresponding increase in the contact area of the protective layer 14 with the person, and the force of the blade 1 on the person may be further reduced.
  • the end surface 121 is perpendicular to the plane of the blade where the blade 1 is located, such that the end surface 121 does not have an angle of attack with respect to the paddle plane where the blade 1 is located, so that the protective layer 14 of the end surface 121 is combined to further reduce the pair of blades 1
  • the leading edge 15 can be subjected to a larger impact as long as the direction of the impact force is perpendicular to the end surface 121 after being subjected to the impact. Impact force without damage.
  • the maximum thickness of the leading edge 15 is greater than or equal to the thickness of any of the blade bodies 13 such that the protective layer 14 at the leading edge 15 has a larger contact area, thereby acting on the protective layer 14 When the person (ie, the paddle 1 hits a person), the force of the paddle 1 to the person can be reduced.
  • the invention designs a blade 1 of a novel structure, and a protective layer 14 is disposed on the blade 1, and the protective layer 14 is located at the leading edge 15 of the blade 1, so that the blade 1 can be reduced to the person after hitting the person The damage reduces the safety hazard.
  • a propeller 10 comprising a hub 2 and at least two blades 1, the structural features of which are as described above Implementation As shown in the example, the description will not be repeated here.
  • each of the blades 1 is fixed to the hub 2 by the paddles 11 and rotates with the rotation of the hub 2.
  • the propeller 10 is a folding paddle
  • the number of blades 1 is two
  • each paddle 1 is rotatably coupled to the hub 2
  • two paddles The blade 1 is symmetrically connected to the hub 2 centering on the hub 2.
  • the data of the blade 1 in each propeller 10 can be other numbers according to actual needs, such as three, four, and the like.
  • the plurality of blades 1 are evenly spaced in the circumferential direction at the center of the hub 2.
  • the blades 1 are two, and the two blades 1 are integrally formed with the hub 2.
  • each of the blades 1 can also be detachably fixed to the hub 2 by means of a connecting member, which is correspondingly provided with a connecting portion.
  • the data of the blade 1 in each propeller 10 can be other numbers according to actual needs, such as three, four, and the like.
  • the blade 1 in the propeller 10 in this embodiment is provided with a protective layer 14 which is located at the leading edge 15 of the blade 1 so as to reduce the damage to the person after the paddle 1 hits the person, and reduces the damage. Security risks.
  • a power assembly 20 is also provided.
  • the power assembly 20 includes a drive member 21 and a propeller 10 as described above.
  • the propeller 10 is coupled to the drive member 21 via a hub 2, and the drive member 21 drives the hub 2 to rotate, thereby driving the propeller 10 to rotate.
  • the drive member 21 can be a motor.
  • the blade 1 in the propeller 10 is provided with a protective layer 14 which is located at the leading edge 15 of the blade 1 so as to reduce the damage to the human after the paddle 1 hits the person and reduce the safety hazard.
  • an unmanned aerial vehicle 100 that includes a fuselage 101, a boom 102, a drive 103, and a propeller 10.
  • the arm 102 is connected to the body 101, and the driving device 103 is disposed on the arm 102.
  • the propeller 10 is connected to the driving device 103 and rotated by the driving device 103.
  • the specific structure of the propeller 10 is as shown in the above embodiment, and the detailed description thereof will not be repeated here.
  • the damage of the blade to the human in the high-speed rotation is reduced; wherein the protective layer is disposed on the blade body and located at the leading edge of the blade, thereby reducing the paddle
  • the damage to the person after the leaf hits the person reduces the safety hazard.

Abstract

一种桨叶(1),具有相背的桨根(11)和桨尖(12),所述桨叶(1)包括位于所述桨根(11)和桨尖(12)之间的前缘(15)和后缘(16);其中,所述桨叶(1)还包括桨叶本体(13)和保护层(14),所述桨叶本体(13)自所述桨根(11)延伸至所述桨尖(12),所述保护层(14)设置于所述桨叶本体(13)上并位于所述前缘(15)。该桨叶(1)可以减小桨叶打到人之后对人的伤害,降低了安全隐患。一种螺旋桨(10),具有所述桨叶(1)。一种动力组件(20),包括驱动件(21)和所述螺旋桨(10)。一种无人飞行器(100),包括机身(101)、机臂(102)、驱动装置(103)和所述螺旋桨(10)。

Description

桨叶、螺旋桨、动力组件及无人飞行器 技术领域
本发明涉及无人机技术领域,尤其涉及一种桨叶、螺旋桨、动力组件及无人飞行器。
背景技术
无人飞行器上的螺旋桨为无人飞行器的关键元件,螺旋桨通过桨叶的高速旋转来为无人飞行器的飞行提供动力。但是,目前的螺旋桨的桨叶在高速运动过程中,一旦误碰到人体,螺旋桨的锋利前缘会对人造成很大的伤害,存在很大的安全隐患。
发明内容
本发明提出一种新型结构的桨叶、螺旋桨、动力组件及无人飞行器以解决上述技术问题。
根据本发明实施例的第一方面,提供了一种桨叶,应用于螺旋桨,所述桨叶具有相背的桨根和桨尖,所述桨叶包括位于所述桨根和桨尖之间的前缘和后缘;其中,所述桨叶还包括桨叶本体和保护层,所述桨叶本体自所述桨根延伸至所述桨尖,所述保护层设置于所述桨叶本体上并位于所述前缘。
进一步地,所述保护层通过二次注塑形成于所述桨叶本体的端面。
进一步地,所述保护层自所述桨根延伸至所述桨尖。
进一步地,所述保护层位于所述桨叶本体的端面并形成所述前缘。
进一步地,所述端面为平面。
进一步地,所述端面与所述桨叶所在的桨平面垂直。
进一步地,所述前缘的最大厚度大于或者等于所述桨叶本体任一处的厚度。
根据本发明实施例的第二方面,提供了一种螺旋桨,包括:桨毂以及至少两个如上述中任一项所述的桨叶。
进一步地,所述螺旋桨为折叠桨,所述桨叶的数量为两个,每个所述桨叶可转动地连接于所述桨毂。
进一步地,每个所述桨叶的所述桨根固定于所述桨毂。
进一步地,所述桨叶为两个,两个所述桨叶与所述桨毂一体成型设置。
根据本发明实施例的第三方面,提供了一种动力组件,包括驱动件和上述中任一所述的螺旋桨,所述螺旋桨通过所述桨毂与所述驱动件连接。
根据本发明实施例的第四方面,提供了一种无人飞行器,包括机身、机臂、驱动装置、以及如上述中任一项所述的螺旋桨;所述机臂连接于所述机身,所述驱动装置设于所述机臂上,所述螺旋桨连接于所述驱动装置并在所述驱动装置的驱动下转动。
本发明的实施例提供的技术方案可以包括以下有益效果:
本发明设计了一种新型结构的桨叶,在桨叶上设有保护层,该保护层位于桨叶的前缘,从而可以减小桨叶打到人之后对人的伤害,降低了安全隐患。
本发明设计了一种螺旋桨,该螺旋桨包括桨毂以及至少两个桨叶,桨叶上设有保护层,该保护层位于桨叶的前缘,从而可以减小桨叶打到人之后对人的伤害,降低了安全隐患。
本发明设计了一种动力组件,该动力组件包括驱动件和本发明的螺旋桨,该螺旋桨上的桨叶上设有保护层,该保护层位于桨叶的前缘,从而可以减小桨叶打到人之后对人的伤害,降低了安全隐患。
本发明设计了一种无人飞行器,该无人飞行器包括机身、机臂、驱动装置、以及螺旋桨,该螺旋桨上的桨叶上设有保护层,该保护层位于桨叶的前缘,从而可以减小桨叶打到人之后对人的伤害,降低了安全隐患。
应当理解的是,以上的一般描述和后文的细节描述仅是示例性和解释性的,并不能限制本发明。
附图说明
为了更清楚地说明本发明实施例中的技术方案,下面将对实施例描述中所需要使用的附图作简单地介绍,显而易见地,下面描述中的附图仅仅是本发明的一些实施例,对于本领域普通技术人员来讲,在不付出创造性劳动性的前提下,还可以根据这些附图获得其他的附图。
图1是本发明一示例性实施例示出的一种桨叶的立体示意图;
图2是本发明一示例性实施例示出的一种桨叶的正面示意图;
图3是本发明一示例性实施例示出的一种桨叶的侧面示意图;
图4是图3中A-A面的截面示意图;
图5是本发明又一示例性实施例示出的一种桨叶的结构示意图;
图6是本发明一示例性实施例示出的一种动力组件的结构示意图;
图7是本发明一示例性实施例示出的一种无人飞行器的结构示意图。
具体实施方式
下面将结合本发明实施例中的附图,对本发明实施例中的技术方案进行清楚、完整地描述,显然,所描述的实施例仅仅是本发明一部分实施例,而不是全部的实施例。基于本发明中的实施例,本领域普通技术人员在没有做出创造性劳动前提下所获得的所有其他实施例,都属于本发明保护的范围。
下面结合附图,对本发明的一些实施方式作详细说明,在不冲突的情况下,下述的实施例及实施例中的特征可以相互组合。
如图1至图4所示,本发明实施例的桨叶1应用于螺旋桨10。该桨叶1具有相背的桨根11和桨尖12,桨叶1包括位于桨根11和桨尖12之间的前缘15和后缘16。其中,桨叶1还包括桨叶本体13和保护层14,桨叶本体13自桨根11延伸至桨尖12,保护层14设置于桨叶本体上并位于前缘15。如此通过该保护层14的设置,以使桨叶1在高速旋转过程中,即使该桨叶1的前缘15打到人,也不会划伤或者打伤人。
在本发明的实施例中,该保护层14可以选用软胶材料,保护层14通过二 次注塑形成于桨叶本体13的端面。具体地,桨叶本体13可以使用硬质材料通过模内注塑加工形成,然后通过模内二次注塑加工出前缘15为软胶材料的桨叶1,即设置于桨叶本体13上并位于前缘15的保护层14。当然,在本发明的其他实施例中,该保护层14还可以为其他软质材料制成,例如泡棉材料,该泡棉材料可以通过粘合层固定于桨叶本体13上并位于前缘15。
在一可选的实施例中,该保护层14自桨根11延伸至桨尖12,即该保护层14形成于整个前缘15。如此设计能够简化前后两次注塑加工中所用到的模具的结构,从而使生产成本较低,易于批量生产。
在一可选的实施例中,由于螺旋桨10旋转时通常都是桨尖12最先接触到人,因此在其他实施例中,该保护层14还可以形成于前缘15的靠近桨尖12的部分。
在又一可选实施例中,该保护层14位于桨叶本体13的端面121并形成前缘15。可选地,该端面121可以为平面,平面的设置可以导致保护层14与人的接触面积也相应增加,可以进一步减小桨叶1对人的作用力。
进一步地,端面121与桨叶1所在的桨平面垂直,如此以使端面121相对桨叶1所在的桨平面不具备攻角,从而结合端面121的保护层14,可以进一步减小桨叶1对人的伤害;另外,由于端面121与桨叶1所在的桨平面垂直,还可以使前缘15在遭受撞击之后,由于撞击力的方向与端面121垂直,端面121能够尽可能的承受更大的撞击力而不损坏。
优选地,该前缘15的最大厚度大于或者等于桨叶本体13任一处的厚度,如此设置以使位于前缘15的保护层14具有较大的接触面积,从而在该保护层14作用于人(即桨叶1打到人)时,可以减少桨叶1对人的作用力。
本发明设计了一种新型结构的桨叶1,在桨叶1上设有保护层14,该保护层14位于桨叶1的前缘15,从而可以减小桨叶1打到人之后对人的伤害,降低了安全隐患。
如图1至图3所示,根据本发明的又一方面,还提供了一种螺旋桨10,该螺旋桨10包括桨毂2以及至少两个桨叶1,该桨叶1的的结构特征如上述实施 例所示,在此就不再重复赘述。其中,每个桨叶1通过桨根11固定在桨毂2上,且随桨毂2的转动而转动。
如图1和图2所示,在一可选实施例中,该螺旋桨10为折叠桨,桨叶1的数量为两个,每个桨叶1可转动地连接于桨毂2,两个桨叶1以桨毂2为中心,对称地连接于桨毂2。可以理解的是,根据实际需要,每个螺旋桨10中的桨叶1的数据可以为其他数量,如:三个、四个等等。在多个桨叶1的情况下,多个桨叶1以轮毂2的中心在圆周方向上间隔均匀分布。
如图5所示,在又一可选实施例中,桨叶1为两个,两个桨叶1与桨毂2一体成型设置。当然,在其他实施例中,每个桨叶1也可以通过连接件可拆卸地固定在桨毂2上,该桨毂2上对应地设有连接部。可以理解的是,根据实际需要,每个螺旋桨10中的桨叶1的数据可以为其他数量,如:三个、四个等等。
本实施例中的螺旋桨10中的桨叶1上设有保护层14,该保护层14位于桨叶1的前缘15,从而可以减小桨叶1打到人之后对人的伤害,降低了安全隐患。
如图6所示,根据本发明的又一方面,还提供了一种动力组件20。该动力组件20包括驱动件21和如上述中的螺旋桨10,该螺旋桨10通过桨毂2与驱动件21连接,通过驱动件21驱动桨毂2转动,从而驱使螺旋桨10转动。可选地,该驱动件21可以为电机。
其中,螺旋桨10中的桨叶1上设有保护层14,该保护层14位于桨叶1的前缘15,从而可以减小桨叶1打到人之后对人的伤害,降低了安全隐患。
如图7所示,根据本发明的又一方面,还提供了一种无人飞行器100,该无人飞行器100包括机身101、机臂102、驱动装置103、以及螺旋桨10。其中,机臂102连接于机身101,驱动装置103设于机臂102上,螺旋桨10连接于驱动装置103并在驱动装置103的驱动下转动。该螺旋桨10的具体结构如上述实施例所示,在此就不再重复赘述。
本发明中,通过在桨叶上设有保护层,降低桨叶在高速旋转中对人的伤害;其中,该保护层设置于桨叶本体上且位于桨叶的前缘,从而可以减小桨叶打到人之后对人的伤害,降低了安全隐患。
本领域技术人员在考虑说明书及实践这里公开的发明后,将容易想到本发明的其它实施方案。本申请旨在涵盖本发明的任何变型、用途或者适应性变化,这些变型、用途或者适应性变化遵循本发明的一般性原理并包括本发明未公开的本技术领域中的公知常识或惯用技术手段。说明书和实施例仅被视为示例性的,本发明的真正范围和精神由本申请的权利要求指出。
应当理解的是,本发明并不局限于上面已经描述并在附图中示出的精确结构,并且可以在不脱离其范围进行各种修改和改变。本发明的范围仅由所附的权利要求来限制。

Claims (37)

  1. 一种桨叶,应用于螺旋桨,其特征在于,所述桨叶具有相背的桨根和桨尖,所述桨叶包括位于所述桨根和桨尖之间的前缘和后缘;其中,所述桨叶还包括桨叶本体和保护层,所述桨叶本体自所述桨根延伸至所述桨尖,所述保护层设置于所述桨叶本体上并位于所述前缘。
  2. 根据权利要求1所述的桨叶,其特征在于,所述保护层通过二次注塑形成于所述桨叶本体的端面。
  3. 根据权利要求1所述的桨叶,其特征在于,所述保护层自所述桨根延伸至所述桨尖。
  4. 根据权利要求1所述的桨叶,其特征在于,所述保护层位于所述桨叶本体的端面并形成所述前缘。
  5. 根据权利要求4所述的桨叶,其特征在于,所述端面为平面。
  6. 根据权利要求4所述的桨叶,其特征在于,所述端面与所述桨叶所在的桨平面垂直。
  7. 根据权利要求4所述的桨叶,其特征在于,所述前缘的最大厚度大于或者等于所述桨叶本体任一处的厚度。
  8. 一种螺旋桨,其特征在于,包括桨毂以及至少两个桨叶,所述桨叶具有相背的桨根和桨尖,所述桨叶包括位于所述桨根和桨尖之间的前缘和后缘;其中,所述桨叶还包括桨叶本体和保护层,所述桨叶本体自所述桨根延伸至所述桨尖,所述保护层设置于所述桨叶本体上并位于所述前缘。
  9. 根据权利要求8所述的螺旋桨,其特征在于,所述保护层通过二次注塑形成于所述桨叶本体的端面。
  10. 根据权利要求8所述的螺旋桨,其特征在于,所述保护层自所述桨根延伸至所述桨尖。
  11. 根据权利要求8所述的螺旋桨,其特征在于,所述保护层位于所述桨叶本体的端面并形成所述前缘。
  12. 根据权利要求11所述的螺旋桨,其特征在于,所述端面为平面。
  13. 根据权利要求11所述的螺旋桨,其特征在于,所述端面与所述桨叶所在的桨平面垂直。
  14. 根据权利要求11所述的螺旋桨,其特征在于,所述前缘的最大厚度大于或者等于所述桨叶本体任一处的厚度。
  15. 根据权利要求8-14所述的螺旋桨,其特征在于,所述螺旋桨为折叠桨,所述桨叶的数量为两个,每个所述桨叶可转动地连接于所述桨毂。
  16. 根据权利要求8-14所述的螺旋桨,其特征在于,每个所述桨叶的桨根固定于所述桨毂。
  17. 根据权利要求16所述的螺旋桨,其特征在于,所述桨叶为两个,两个所述桨叶与所述桨毂一体成型设置。
  18. 一种动力组件,包括驱动件和螺旋桨,其特征在于,所述螺旋桨包括桨毂以及至少两个桨叶,所述桨叶具有相背的桨根和桨尖,所述桨叶包括位于所述桨根和桨尖之间的前缘和后缘;其中,所述桨叶还包括桨叶本体和保护层,所述桨叶本体自所述桨根延伸至所述桨尖,所述保护层设置于所述桨叶本体上并位于所述前缘,所述螺旋桨通过所述桨毂与所述驱动件连接。
  19. 根据权利要求18所述的动力组件,其特征在于,所述保护层通过二次注塑形成于所述桨叶本体的端面。
  20. 根据权利要求18所述的动力组件,其特征在于,所述保护层自所述桨根延伸至所述桨尖。
  21. 根据权利要求18所述的动力组件,其特征在于,所述保护层位于所述桨叶本体的端面并形成所述前缘。
  22. 根据权利要求21所述的动力组件,其特征在于,所述端面为平面。
  23. 根据权利要求21所述的动力组件,其特征在于,所述端面与所述桨叶所在的桨平面垂直。
  24. 根据权利要求21所述的动力组件,其特征在于,所述前缘的最大厚度大于或者等于所述桨叶本体任一处的厚度。
  25. 根据权利要求18-24所述的动力组件,其特征在于,所述螺旋桨为折叠桨,所述桨叶的数量为两个,每个所述桨叶可转动地连接于所述桨毂。
  26. 根据权利要求18-24所述的动力组件,其特征在于,每个所述桨叶的桨根固定于所述桨毂。
  27. 根据权利要求26所述的动力组件,其特征在于,所述桨叶为两个,两个所述桨叶与所述桨毂一体成型设置。
  28. 一种无人飞行器,其特征在于,包括机身、机臂、驱动装置、螺旋桨;所述机臂连接于所述机身,所述驱动装置设于所述机臂上,所述螺旋桨连接于所述驱动装置并在所述驱动装置的驱动下转动,所述螺旋桨包括桨毂以及至少两个桨叶,所述桨叶具有相背的桨根和桨尖,所述桨叶包括位于所述桨根和桨尖之间的前缘和后缘;其中,所述桨叶还包括桨叶本体和保护层,所述桨叶本体自所述桨根延伸至所述桨尖,所述保护层设置于所述桨叶本体上并位于所述前缘。
  29. 根据权利要求28所述的无人飞行器,其特征在于,所述保护层通过二次注塑形成于所述桨叶本体的端面。
  30. 根据权利要求28所述的无人飞行器,其特征在于,所述保护层自所述桨根延伸至所述桨尖。
  31. 根据权利要求28所述的无人飞行器,其特征在于,所述保护层位于所述桨叶本体的端面并形成所述前缘。
  32. 根据权利要求31所述的无人飞行器,其特征在于,所述端面为平面。
  33. 根据权利要求31所述的无人飞行器,其特征在于,所述端面与所述桨叶所在的桨平面垂直。
  34. 根据权利要求31所述的无人飞行器,其特征在于,所述前缘的最大厚度大于或者等于所述桨叶本体任一处的厚度。
  35. 根据权利要求28-34所述的无人飞行器,其特征在于,所述螺旋桨为折叠桨,所述桨叶的数量为两个,每个所述桨叶可转动地连接于所述桨毂。
  36. 根据权利要求28-34所述的无人飞行器,其特征在于,每个所述桨叶的 桨根固定于所述桨毂。
  37. 根据权利要求36所述的无人飞行器,其特征在于,所述桨叶为两个,两个所述桨叶与所述桨毂一体成型设置。
PCT/CN2017/102974 2017-07-31 2017-09-22 桨叶、螺旋桨、动力组件及无人飞行器 WO2019024202A1 (zh)

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