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WO2019037037A1 - Hélice - Google Patents

Hélice 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
Authority
WO
WIPO (PCT)
Prior art keywords
blade
rigid body
propeller
soft side
soft
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/CN2017/098847
Other languages
English (en)
Chinese (zh)
Inventor
田瑜
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Priority to PCT/CN2017/098847 priority Critical patent/WO2019037037A1/fr
Publication of WO2019037037A1 publication Critical patent/WO2019037037A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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Classifications

    • 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.

Landscapes

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

Abstract

L'invention concerne une hélice comprenant au moins une pale (1, 2, 3), la pale (1, 2, 3) comprenant un corps rigide (11) et un bord souple (12) raccordé au corps rigide (11), le bord souple (12) s'étendant vers l'extérieur à partir du corps rigide (11). En raison de la présence du bord souple (12), si la pale (1, 2, 3) heurte une main de l'utilisateur, la blessure est évitée. Le corps rigide (11) assure la rigidité du corps de la pale (1, 2, 3), ce qui permet d'assurer une performance de poussée.
PCT/CN2017/098847 2017-08-24 2017-08-24 Hélice Ceased WO2019037037A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
PCT/CN2017/098847 WO2019037037A1 (fr) 2017-08-24 2017-08-24 Hélice

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/CN2017/098847 WO2019037037A1 (fr) 2017-08-24 2017-08-24 Hélice

Publications (1)

Publication Number Publication Date
WO2019037037A1 true WO2019037037A1 (fr) 2019-02-28

Family

ID=65439760

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/CN2017/098847 Ceased WO2019037037A1 (fr) 2017-08-24 2017-08-24 Hélice

Country Status (1)

Country Link
WO (1) WO2019037037A1 (fr)

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN2734291Y (zh) * 2003-08-12 2005-10-19 麦特尔公司 有源玩具飞机上的带缓冲边缘的螺旋桨桨叶
CN2899887Y (zh) * 2005-09-29 2007-05-16 许侦 带有防护软胶的直升机桨叶
KR20120102880A (ko) * 2011-03-09 2012-09-19 유세혁 옥터콥터 장치 및 이의 제어 방법
CN104787282A (zh) * 2015-04-03 2015-07-22 郑伟 一种带金属前缘的螺旋桨及制造工艺
CN206202665U (zh) * 2016-11-09 2017-05-31 亿航智能设备（广州）有限公司 螺旋桨、动力组件及飞行器

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN2734291Y (zh) * 2003-08-12 2005-10-19 麦特尔公司 有源玩具飞机上的带缓冲边缘的螺旋桨桨叶
CN2899887Y (zh) * 2005-09-29 2007-05-16 许侦 带有防护软胶的直升机桨叶
KR20120102880A (ko) * 2011-03-09 2012-09-19 유세혁 옥터콥터 장치 및 이의 제어 방법
CN104787282A (zh) * 2015-04-03 2015-07-22 郑伟 一种带金属前缘的螺旋桨及制造工艺
CN206202665U (zh) * 2016-11-09 2017-05-31 亿航智能设备（广州）有限公司 螺旋桨、动力组件及飞行器

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