WO2019085150A1 - Hélice repliable et véhicule aérien sans pilote - Google Patents

Hélice repliable et véhicule aérien sans pilote Download PDF

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Publication number
WO2019085150A1
WO2019085150A1 PCT/CN2017/115030 CN2017115030W WO2019085150A1 WO 2019085150 A1 WO2019085150 A1 WO 2019085150A1 CN 2017115030 W CN2017115030 W CN 2017115030W WO 2019085150 A1 WO2019085150 A1 WO 2019085150A1
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WO
WIPO (PCT)
Prior art keywords
paddle
holder
limit
limiting
blade
Prior art date
Application number
PCT/CN2017/115030
Other languages
English (en)
Chinese (zh)
Inventor
徐文康
邱健达
Original Assignee
深圳市大疆创新科技有限公司
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 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 CN201780066005.6A priority Critical patent/CN109952248A/zh
Publication of WO2019085150A1 publication Critical patent/WO2019085150A1/fr

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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
    • B64C11/02—Hub construction
    • B64C11/04—Blade mountings
    • 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
    • B64C11/28—Collapsible or foldable blades

Definitions

  • the present invention relates to the field of unmanned aerial vehicles, and more particularly to a folding paddle and an unmanned aerial vehicle.
  • the rotors on unmanned aerial vehicles provide lift and thrust for unmanned aerial vehicles and are key components of unmanned aerial vehicles. Because of its small footprint after folding, the folding paddle has the characteristics of convenient storage and transportation, and is widely used in unmanned aerial vehicles.
  • the blades of the folding paddle are generally free to rotate about the rotating shaft on the paddle of the folding paddle, and the blade is deployed by the centrifugal force generated when the paddle is rotated at a high speed.
  • the blade will deviate from the deployed position. Therefore, the ordinary folding paddle will swing near the deployed position during the working process, and the blade and the paddle (or the pad on the paddle) will wear after a long time of work, thereby degrading the performance of the folding paddle and shortening the folding paddle. Service life.
  • the object of the present invention is to solve the technical problems existing in the prior art, and provide a folding paddle and an unmanned aerial vehicle having the same, which can reduce the wear between the blade and the paddle holder and prolong the service life of the folding paddle.
  • the present invention provides a folding paddle, the folding paddle comprising: a paddle, a paddle holder and a limiting mechanism mounted on the paddle holder, wherein
  • a paddle holder for mounting a blade, the blade being expandable relative to the paddle holder or fold;
  • the limiting mechanism is configured to limit rotation of the paddle relative to the paddle holder when the paddle is deployed relative to the paddle holder.
  • the limiting mechanism is further configured to release the rotation limit of the blade relative to the paddle holder when an external force is applied to enable the blade to be folded relative to the paddle holder.
  • the limiting mechanism includes a limiting portion and a resilient member, the limiting portion includes a limiting operating portion, the blade includes a blade body and a limiting insert mounted at an end of the blade body;
  • the elastic member When the paddle is unfolded relative to the paddle holder, the elastic member abuts the limiting portion to form a limit fit of the limiting operation portion and the limit insert of the blade to limit the paddle Rotation relative to the paddle holder.
  • the elastic member that abuts the limiting portion is compressed to release the limit fit formed by the limiting operation portion and the limit insert of the blade, thereby releasing The rotation of the paddle relative to the paddle holder is limited.
  • the limiting insert includes a limiting slot; when the paddle is unfolded relative to the paddle holder, the elastic member abuts the limiting portion to protrude the limiting operation portion
  • the limiting slot is configured to limit the rotation of the blade relative to the paddle holder.
  • the limiting slot is a limiting slot disposed obliquely with respect to the rotation axis, wherein the rotating shaft is a rotating shaft of the blade relative to the paddle holder;
  • the limit operating portion is a wedge that cooperates with the limiting slot.
  • the limiting insert further includes an arc sliding surface that cooperates with the wedge
  • the paddle holder includes an upper paddle holder and a lower paddle holder, an upper paddle holder and a lower paddle holder
  • the seats are oppositely disposed, wherein the blades are mounted to the upper and lower paddle holders by connectors.
  • the lower paddle holder includes a mounting portion; the mounting portion is configured to limit a stroke of the limiting portion to move toward the upper paddle holder;
  • One end of the elastic member abuts the limiting portion, and the other end of the elastic member abuts the lower pad holder.
  • the paddle holder further includes a locking piece, and the locking piece and the limiting portion respectively provide a blind hole, wherein the blind hole on the locking piece and the blind hole position on the limiting portion are opposite Correspondingly; one end of the elastic member abuts the blind hole entering the limiting portion, and the other active end of the elastic member abuts the corresponding blind hole on the locking piece.
  • the limiting portion further includes a limit pressing portion for receiving the external force applied.
  • the upper paddle holder includes a through hole corresponding to the limit pressing portion.
  • the blade body and the limit insert are integrally formed.
  • the present invention also provides an unmanned aerial vehicle comprising the above-described folded stack.
  • the utility model provides a folding paddle and an unmanned aerial vehicle, wherein the folding paddle securely limits the blade after being deployed by the limiting mechanism to keep it in the deployed position, and during the use of the folding frame, The wear between the paddle and the paddle holder is reduced, thereby prolonging the service life of the folding paddle; in addition, the entire folding paddle has a simple structure, a compact layout, and a simple appearance.
  • Figure 1 is a perspective view of a folding paddle of the present invention.
  • Figure 2 is an exploded view of the folding paddle of the present invention.
  • Figure 3 is a partial cross-sectional view of the folding paddle of the present invention.
  • Fig. 4 is a cross-sectional view taken along line B-B of Fig. 3;
  • Fig. 5 is a cross-sectional view taken along line C-C of Fig. 3;
  • Figure 6 is a schematic view showing the structure of the upper paddle holder in the folding paddle of the present invention.
  • Figure 7 is a schematic view showing the structure of the lower paddle holder in the folding paddle of the present invention.
  • FIG. 8 is a schematic structural view of a limiting portion in the limiting mechanism of the present invention.
  • Figure 9 is a schematic view showing the structure of the limit insert of the present invention.
  • Fig. 10 is a view showing another embodiment of the stopper portion in the present invention.
  • the present invention provides a folding paddle comprising a paddle holder 1, a limit mechanism 2 and a paddle 3 for mounting a blade 3, the paddle 3 being opposite to the paddle 3
  • the paddle holder 1 can be unfolded or folded.
  • the paddle 3 can be in an unfolded state relative to the paddle holder 1; when not in use, the paddle 3 can be folded relative to the paddle holder 1 to reduce the folding paddle take up space.
  • the limiting mechanism 2 is configured to limit the rotation of the paddle 3 relative to the paddle holder 1 when the paddle 3 is deployed relative to the paddle holder 1. In this way, during the use of the folding paddle, the wear between the paddle 3 and the paddle holder 1 can be reduced, and the service life of the folding paddle can be prolonged.
  • the limiting mechanism 2 is further configured to release the rotation restriction of the blade 3 relative to the paddle holder 1 when an external force is applied, so that the blade 1 can be folded relative to the paddle holder 3 .
  • the user can apply a force to the limiting mechanism 2 to release the rotation limit of the blade 3 relative to the paddle holder 1, so that the blade 3 can be folded up, thereby reducing the folding paddle. Take up space when not in use.
  • the limiting mechanism 2 includes a limiting portion 21 and a resilient member 22, the limiting portion 2 includes a limiting operating portion 211, the blade 3 includes a blade body 31 and is mounted on a limit insert 32 of the blade body end;
  • the elastic member 22 When the paddle 3 is unfolded relative to the paddle holder 1, the elastic member 22 abuts the limiting portion 21 to limit the limit operating portion 212 and the limiting insert 32 of the blade 3. The position is matched to limit the rotation of the paddle 3 relative to the paddle holder 1. When the paddle 3 is unfolded relative to the paddle holder 1 , the elastic member 22 abuts against the limiting portion 21 , so that the limiting operation portion 211 of the limiting portion 21 can form a limit with the limiting insert 32 . In a bit fit, the limit fit is used to limit the rotation of the paddle 3 relative to the paddle holder 1.
  • the elastic member 22 that resists the limiting portion 21 is compressed to release the limit fit formed by the limiting operation portion 211 and the limiting insert 32 of the blade 3. Thereby, the rotation restriction of the blade 3 with respect to the paddle holder 1 is released.
  • the user can apply a force to the limiting portion 21, at which time the elastic member 22 abutting on the limiting portion 21 is compressed, and the limiting portion 21 is along the elastic member 22. The direction of compression is moved, so that the limit fit between the limit operating portion 211 and the limit insert 32 on the limiting portion 21 is After lifting and releasing the limit fit, the paddle 3 can be rotated relative to the paddle holder 1 to achieve folding.
  • the limiting insert 32 includes a limiting slot 3221; the resilient member 22 abuts the limiting portion 21 when the blade 3 is deployed relative to the paddle holder 1
  • the limiting operation portion 211 is protruded into the limiting slot 3221, and a limiting fit is formed between the limiting operating portion 211 and the limiting slot 3221 on the limiting insert 32 to limit the blade 3 Relative to the rotation of the paddle holder 1.
  • the limiting slot 3221 on the limiting insert 32 is a limiting slot disposed obliquely with respect to the rotation axis, wherein the rotating shaft axis is the paddle 3 relative to the paddle holder 1
  • the limit operating portion 211 is a wedge engaged with the limiting slot 3221. When the blade 3 is deployed relative to the paddle holder 1, the wedge protrudes into the limiting slot 3221 under the action of the elastic member 22. To form a limit fit.
  • the limit insert 32 further includes an arc-shaped sliding surface 3222 that cooperates with the wedge.
  • the wedge is abutted against the curved sliding surface 3222 by the elastic member 22.
  • the curved sliding surface 3221 may be disposed at two ends of the limiting slot 3221.
  • the limit cooperation between the wedge wedge and the limiting slot 3221 is released, and the user can fold the blade 3,
  • the wedge is abutted against the curved sliding surface 3222 by the elastic member 22; when the user wants to deploy the blade, the user can operate the blade 3, and during the deployment of the blade 3, the elastic member 22 is The abutting wedge can slide on the curved sliding surface 3222 until the wedge protrudes into the limiting slot 3221 to form a limit fit between the wedge and the limiting slot 3221.
  • the limiting insert 32 further includes a fitting portion 321 and an insert portion 322 that cooperate with the end of the blade main body 31, and the engaging portion 321 is coupled to the insert portion 322 and formed with the An arcuate card slot 323 mating with the end of the blade body, the insert portion 322 is provided with the limit The bit groove 3221 and the curved sliding surface 3222.
  • the engaging portion 321 is a cylindrical body, and of course, the shape thereof can be arbitrarily selected.
  • the limiting insert 32 includes a protruding portion, and the limiting operating portion 211 may be a limiting slot, when the paddle 3 is unfolded relative to the paddle holder 1
  • the elastic member 22 abuts the limiting portion 21 to protrude the protruding portion of the limiting insert 32 into the limiting operation portion 211, and the convexity of the limiting operation portion 211 and the limiting insert 32
  • a limit fit is formed between the extensions to limit rotation of the paddle 3 relative to the paddle holder 1.
  • the pad holder 1 includes an upper paddle holder 11 and a lower paddle holder 12, and the upper paddle holder 11 and the lower paddle holder 12 are disposed opposite each other and form an installation space for mounting the paddle 3, wherein The paddles 3 are mounted to the upper paddle holder 11 and the lower paddle holder 12 via a connector 13.
  • the upper paddle holder 11 includes an upper connecting portion 111 and an upper locking portion 112, wherein the upper connecting portion 111 is one and the upper locking portion 112 is two.
  • the upper connecting portion 111 is located at a middle portion of the upper paddle holder 11 , and the two upper locking portions 112 are symmetrically located at two sides of the upper connecting portion 111 .
  • the lower paddle holder 12 includes a lower locking portion 122 corresponding to the upper locking portion 112, wherein the connecting member 13 can sequentially pass through the upper locking portion 112, the paddle 3 and the lower locking portion 122, through which The blade 3 is mounted to the upper paddle holder 11 and the lower paddle holder 12 in a manner.
  • the upper locking portion 112 includes an upper shaft receiving hole 1121
  • the lower locking portion 122 includes a lower shaft connecting hole 1221
  • the lower shaft connecting hole 1221 corresponds to the position of the upper shaft receiving hole 1121.
  • the connecting member 13 sequentially passes through the upper shaft receiving hole 1121, the paddle 3 and the lower shaft connecting hole 1121, and the blade 3 is mounted on the upper paddle holder 11 and the lower paddle holder Between 12.
  • the blade main body 31 is connected to the engaging portion 321 , and the two are respectively processed with a rotating shaft hole 324 .
  • the blade body 31 is rotatable about the axis of rotation of the shaft hole 324.
  • the rotating shaft hole 324 is located between the upper shaft connecting hole 1121 and the lower shaft connecting hole 1221 , and the three positions are corresponding to each other and the connecting member 13 is disposed.
  • the connecting member 13 passes through the upper paddle holder 11, the blade body 31, the limit insert 32 and the lower paddle holder 12 in sequence.
  • the connecting member 13 is a paddle screw, which is threadedly engaged with the lower paddle holder 12, and the rest is an optical axis, and the blade body 31 can surround the light of the connecting member 13.
  • the shaft portion is rotated.
  • An upper gasket 51 is disposed between the upper paddle holder 11 and the blade body 31, and a lower gasket 52 is disposed between the limiting insert 32 and the lower paddle holder 12 for reducing the Friction is generated between the upper paddle holder 11 and the paddle main body 31, between the limiting insert 32 and the lower paddle holder 12, thereby ensuring that the paddle 3 can be reliably unfolded relative to the paddle holder 1 or fold.
  • the end portion of the connecting member 13 near the threaded section is provided with a nylon column 9 which is located in the lower shaft connecting hole 1221 for preventing loosening of the connecting member 13 and causing the blade 3 to loosen.
  • the blade body 31 and the limiting insert 32 may be a unitary structure.
  • the limiting portion 21 further includes a limit pressing portion 212 for receiving the external force applied.
  • the limit pressing portion 212 can be pressed to release the rotation restriction of the paddle 3 and the paddle holder 1.
  • the upper paddle holder 11 includes a through hole 1111 corresponding to the limit pressing portion 212, and the user can press the limit pressing portion 212 through the through hole 1111.
  • the through hole 1111 may be disposed in the upper connecting portion 111, and the two ends of the through hole 1111 near the upper locking portion 112 are arc-shaped through holes, and the through holes are The middle portion of the 1111 is a rectangular through hole, and the circular arc-shaped through hole and the rectangular through hole have a curved surface transition.
  • the shape of the through hole 1111 can be arbitrarily selected according to the installation requirements, and may be any shape such as a square, a rectangle, an ellipse, a circle, or the like.
  • the lower paddle holder 12 further includes a lower connecting portion 121 for connecting the lower locking portion 122, wherein There are one lower connecting portion 121 and two lower locking portions 122.
  • the lower connecting portion 121 is located at a middle portion of the lower paddle holder 12, and the two lower locking portions 122 are symmetrically located at two sides of the lower connecting portion 121.
  • the lower connecting portion 121 corresponds to the position of the upper connecting portion 111, and the lower locking portion 122 and the upper locking portion 112 correspond to each other.
  • the limiting portion 21 can be mounted on the lower connecting portion 121.
  • the lower connecting portion 121 can include a cavity 1211, wherein the cavity 1211 can be convex upward in the direction of the paddle holder 11
  • the seat portion 21 can be slidably coupled to the cavity 12111. At least a portion of the limiting portion 21 may be disposed in the cavity 2111, and an internal shape of the cavity 1211 may match an outer shape of the limiting portion 21.
  • the lower paddle holder The 12 further includes a stopper portion (not shown) for restricting the stroke of the stopper portion 21 in the direction of the upper paddle holder 11.
  • the stop portion is a stepped surface or a protrusion formed by the inner wall of the cavity 1214. In other embodiments, the stop portion may also be located at an inner wall of the through hole 1111.
  • the limiting portion 21 further includes a convex portion 213 that cooperates with the stopping portion, and the convex portion 213 is located at a side surface of the limiting operation portion 211.
  • the pad holder 1 further includes a locking tab 14 that is disposed opposite the lower pad holder 12 in a direction away from the upper pad holder 11.
  • the locking piece 14 includes a counterbore 141, and the screw 8 is sequentially passed through the counterbore 141 and the corresponding mounting hole on the lower paddle holder 12 to fix the locking piece 14 to the lower paddle On the seat 12.
  • a blind hole 142 is formed in the opposite end surface of the limiting portion 21 and the locking piece 14 respectively.
  • the blind hole 142 is provided with an elastic member 22, and an active end of the elastic member 22 abuts the limit. a blind hole of the portion 21, the other end of the elastic member 22 abuts into the lock
  • the blind hole 142 corresponding to the sheet 14 is provided.
  • the elastic member 22 When the paddle 3 is unfolded relative to the paddle holder 1, the elastic member 22 abuts the limiting portion 21 to form a limit fit of the limiting operation portion 211 and the paddle 3 to limit the paddle The rotation of the leaf 3 relative to the paddle holder 1.
  • the elastic member 22 is a spring, and the number of the elastic members 22 is equal to the number of the limiting holes 21 and the blind holes 142 on the locking piece 14, and may be one or more. Increase or decrease according to actual needs.
  • the limiting portion 21 can also be assembled by using multiple parts.
  • the limiting portion 21 includes a first limiting portion 231, a second limiting portion 232, and a a third limiting portion 233, wherein the first limiting portion 231 is located at a middle portion, and the second limiting portion 232 and the third limiting portion 233 are located at two sides of the first limiting portion 231, and the three are respectively processed
  • the blind hole is provided with an elastic member 22.
  • the second limiting portion 232 and the third limiting portion 233 are engaged with the limiting insert 32, and the first limiting portion 231 is engaged with the stopping portion.
  • the first limiting portion 231 and the second limiting portion 232 are disposed between the first limiting portion 231 and the third limiting portion 233 by a boss and a step surface.
  • the first limiting portion 231 acts on the second limiting portion 232 and the third limiting portion 233, respectively, and releases the two with the limiting insert 32.
  • the rotation limit of the blade 3 relative to the paddle holder 1 is released.
  • the present invention also provides an unmanned aerial vehicle using the folding paddle described above.
  • the folding paddle maintains the paddle 3 in the deployed position after deployment by the limiting mechanism 2, which can reduce the wear between the paddle 3 and the paddle holder 1.
  • the limiting mechanism 2 adopts the cooperation of the oblique wedge and the limiting slot to achieve the limit position, and the adopted matching mode is simple, reliable and easy to implement. After the folding paddle is used, the limiting mechanism 2 can be unlocked by the compression spring, and the wedge can be unlocked reliably and conveniently, thereby folding the folding paddle.
  • each part of the folding paddle can ensure the simple structure and simple appearance of the folding paddle; the matching relationship and layout of each part structure can ensure the function of the folding paddle At the same time, it is compact, compact and saves installation space.

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  • Engineering & Computer Science (AREA)
  • Aviation & Aerospace Engineering (AREA)
  • Toys (AREA)

Abstract

L'invention concerne une hélice repliable et un véhicule aérien sans pilote. L'hélice repliable comprend : une base de support d'hélice (1) permettant l'installation d'une pale d'hélice (3), la pale d'hélice (3) étant repliable et déployable par rapport à la base de support d'hélice (1) ; et un mécanisme de limitation de position (2) permettant de limiter la rotation de la pale d'hélice (3) par rapport à la base de support d'hélice (1) lorsque la pale d'hélice (3) est déployée par rapport à la base de support d'hélice (1). L'hélice repliable maintient la pale d'hélice (3) en position déployée après son déploiement, réduit l'usure entre la pale d'hélice (3) et la base de support d'hélice (1), présente des fonctions fiables assurées par une structure globale, et est facile à actionner et à mettre en œuvre.
PCT/CN2017/115030 2017-10-31 2017-12-07 Hélice repliable et véhicule aérien sans pilote WO2019085150A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201780066005.6A CN109952248A (zh) 2017-10-31 2017-12-07 一种折叠桨及无人飞行器

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CN201721435270.0U CN207875978U (zh) 2017-10-31 2017-10-31 一种折叠桨及无人飞行器
CN201721435270.0 2017-10-31

Publications (1)

Publication Number Publication Date
WO2019085150A1 true WO2019085150A1 (fr) 2019-05-09

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WO (1) WO2019085150A1 (fr)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112455672A (zh) * 2020-12-15 2021-03-09 广州极飞科技有限公司 一种螺旋桨组件及无人机
CN112706917B (zh) * 2021-01-15 2023-12-05 郑州金创工程设计有限公司 一种测绘用旋翼无人机螺旋桨组件
CN113911319A (zh) * 2021-11-23 2022-01-11 北京卓翼智能科技有限公司 一种无人机螺旋桨折叠限位机构
CN116812193B (zh) * 2023-08-31 2023-12-08 北京卓翼智能科技有限公司 一种限位机构以及无人机折叠桨

Citations (7)

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DE3240995A1 (de) * 1982-11-03 1984-05-03 Hoffmann Fluzeugbau Friesach GmbH, 9322 Friesach Motorsegler
US6308632B1 (en) * 1998-11-23 2001-10-30 James E. Shaffer Deployable folded propeller assembly for aerial projectiles
CN102069907A (zh) * 2010-09-16 2011-05-25 孙为红 旋翼机旋翼角度固定装置
CN203921188U (zh) * 2014-07-08 2014-11-05 无锡荡口通和纺织机械厂 展开收拢式螺旋桨结构
US20160001879A1 (en) * 2013-03-14 2016-01-07 Aeryon Labs Inc. Folding propellers system
CN205022849U (zh) * 2015-10-08 2016-02-10 安阳市豪克科技发展有限责任公司 一种带有限位结构的折叠桨
CN205675232U (zh) * 2016-04-13 2016-11-09 深圳市大疆创新科技有限公司 桨夹、折叠桨、动力套装及无人机

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Patent Citations (7)

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Publication number Priority date Publication date Assignee Title
DE3240995A1 (de) * 1982-11-03 1984-05-03 Hoffmann Fluzeugbau Friesach GmbH, 9322 Friesach Motorsegler
US6308632B1 (en) * 1998-11-23 2001-10-30 James E. Shaffer Deployable folded propeller assembly for aerial projectiles
CN102069907A (zh) * 2010-09-16 2011-05-25 孙为红 旋翼机旋翼角度固定装置
US20160001879A1 (en) * 2013-03-14 2016-01-07 Aeryon Labs Inc. Folding propellers system
CN203921188U (zh) * 2014-07-08 2014-11-05 无锡荡口通和纺织机械厂 展开收拢式螺旋桨结构
CN205022849U (zh) * 2015-10-08 2016-02-10 安阳市豪克科技发展有限责任公司 一种带有限位结构的折叠桨
CN205675232U (zh) * 2016-04-13 2016-11-09 深圳市大疆创新科技有限公司 桨夹、折叠桨、动力套装及无人机

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CN207875978U (zh) 2018-09-18
CN109952248A (zh) 2019-06-28

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