JP2019172051A - Blade and device including the same - Google Patents

Blade and device including the same Download PDF

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Publication number
JP2019172051A
JP2019172051A JP2018062177A JP2018062177A JP2019172051A JP 2019172051 A JP2019172051 A JP 2019172051A JP 2018062177 A JP2018062177 A JP 2018062177A JP 2018062177 A JP2018062177 A JP 2018062177A JP 2019172051 A JP2019172051 A JP 2019172051A
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Japan
Prior art keywords
blade
rotation axis
radial direction
front edge
respect
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JP2018062177A
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Japanese (ja)
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健太 水野
Kenta Mizuno
健太 水野
正典 吉原
Masanori Yoshihara
正典 吉原
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Yamaha Motor Co Ltd
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Yamaha Motor Co Ltd
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Priority to JP2018062177A priority Critical patent/JP2019172051A/en
Priority to CN201910243824.4A priority patent/CN110316357A/en
Publication of JP2019172051A publication Critical patent/JP2019172051A/en
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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
    • B64C11/205—Constructional features for protecting blades, e.g. coating

Abstract

To provide a blade which enables improvement of joint strength between a first member and a second member against centrifugal force generated by rotation of the blade, and to provide a device including the blade.SOLUTION: A blade 10 rotates around a rotation axis X and includes first members 14 and second members 16. Each first member 14 extends in a radial direction relative to the rotation axis X and includes an engagement part 28 which engages with the second member 16. Each second member 16 is provided from one end part to the other end part of a front edge part 48 of a flange part 30 (the first member 14) in a rotation direction Y and is provided so as to be located in front of the front edge part 48 of the flange part 30 (the first member 14). The engagement part 28 has: a first portion 36 located at the outer side of the second member 16 in the radial direction relative to the rotation axis X; and a second portion 38 overlapping with the second member 16 in a rotation axis X direction. Further, the first member 14 has a bending elastic modulus higher than that of the second member 16 and the second member 16 has an impact value higher than that of the first member 14.SELECTED DRAWING: Figure 2

Description

この発明はブレードおよびそれを備える機器に関し、より特定的には回転されるブレードおよびそれを備える機器に関する。   The present invention relates to a blade and a device including the blade, and more particularly to a rotated blade and a device including the blade.

従来、航空機等のような回転されるブレードを用いた機器において、ブレードが破損することを抑制するために、ブレードに補強材が設けられる。   Conventionally, in a device using a rotating blade such as an aircraft, a reinforcing material is provided on the blade in order to prevent the blade from being damaged.

この種の従来技術の一例として、特許文献１には、タービンエンジン用のブレードおよびブレードの前縁部に設けられる補強材が開示されている。ブレードの前縁部には、ブレードの長手方向に延びる溝が形成されており、補強材は、ブレードの前縁部に形成された溝に埋め込まれるようにして、ブレードに設けられる。   As an example of this type of prior art, Patent Document 1 discloses a blade for a turbine engine and a reinforcing material provided on a front edge portion of the blade. A groove extending in the longitudinal direction of the blade is formed in the front edge portion of the blade, and the reinforcing material is provided in the blade so as to be embedded in the groove formed in the front edge portion of the blade.

特表２０１４−５３２１１２号公報Special table 2014-532112 gazette

特許文献１において、ブレードの長手方向に延びる溝では、ブレードの長手方向に生じる力すなわちブレードが回転されることによって生じる遠心力に対して、補強材を十分に係止できず、補強材がブレードから脱落してしまうおそれがあり、ブレードと補強材との接合強度が十分でない。   In Patent Document 1, in the groove extending in the longitudinal direction of the blade, the reinforcing material cannot be sufficiently locked against the force generated in the longitudinal direction of the blade, that is, the centrifugal force generated by rotating the blade. May be detached from the blade, and the bonding strength between the blade and the reinforcing material is not sufficient.

それゆえにこの発明の主たる目的は、ブレードが回転することによって生じる遠心力に対する第１部材と第２部材との接合強度を大きくできる、ブレードおよびそれを備える機器を提供することである。   Therefore, a main object of the present invention is to provide a blade and a device including the blade that can increase the bonding strength between the first member and the second member against the centrifugal force generated by the rotation of the blade.

上述の目的を達成するために、回転軸線周りに回転されるブレードであって、回転軸線に対して径方向に延びる第１部材と、回転方向における第１部材の前縁部のうち少なくとも径方向の外端部に設けられかつ少なくとも一部が第１部材の前縁部よりも前方に位置するように設けられる第２部材とを備え、第１部材は、第２部材を係止する係止部を含み、係止部は、径方向において第２部材よりも外方に位置する第１部分を有する、ブレードが提供される。   In order to achieve the above-mentioned object, the blade is rotated around the rotation axis, and the first member extending in the radial direction with respect to the rotation axis and at least the radial direction of the front edge portion of the first member in the rotation direction A second member provided at an outer end portion of the first member and provided so that at least a part thereof is positioned forward of a front edge portion of the first member, and the first member locks the second member. A blade is provided that includes a first portion, the locking portion having a first portion that is located outward from the second member in the radial direction.

この発明では、第１部材の前縁部のうち少なくとも外端部に、第１部材の前縁部よりも前方に位置するように第２部材が設けられるので、ブレードが回転しているときに、ブレードが径方向の外方から衝撃を受けたとしても、第１部材が破損することを外端部に設けられる第２部材によって抑制できる。そして、係止部は径方向において第２部材よりも外方に位置する第１部分を有するので、ブレードが回転されることによって遠心力が生じたとしても、第２部材が第１部材からはずれないように第２部材を係止でき、第１部材と第２部材との接合強度を大きくできる。   In the present invention, since the second member is provided at least at the outer end portion of the front edge portion of the first member so as to be positioned forward of the front edge portion of the first member, the blade is rotating. Even if the blade receives an impact from the outside in the radial direction, the first member can be prevented from being damaged by the second member provided at the outer end. And since the latching | locking part has a 1st part located outward rather than a 2nd member in radial direction, even if a centrifugal force arises when a braid | blade is rotated, a 2nd member will slip | deviate from a 1st member. The second member can be locked so that the bonding strength between the first member and the second member can be increased.

好ましくは、第１部材は第２部材よりも曲げ弾性率が高く、第２部材は第１部材よりも衝撃値が高い。この場合、第１部材によってブレードの剛性を確保でき、第２部材によってブレードが破断することを抑制できる。   Preferably, the first member has a higher flexural modulus than the second member, and the second member has a higher impact value than the first member. In this case, the rigidity of the blade can be secured by the first member, and the blade can be prevented from being broken by the second member.

また好ましくは、係止部は、回転軸線方向において第２部材と重なる第２部分をさらに有する。この場合、係止部は回転軸線方向において第２部材と重なる第２部分を有するので、第１部材および第２部材が回転軸線方向に力を受けたとしても、第２部材が第１部材からはずれないように第２部材を係止でき、第１部材と第２部材との接合強度を大きくできる。   Preferably, the locking portion further includes a second portion overlapping the second member in the rotation axis direction. In this case, since the locking portion has a second portion that overlaps with the second member in the rotation axis direction, even if the first member and the second member receive a force in the rotation axis direction, the second member is separated from the first member. The second member can be locked so as not to come off, and the bonding strength between the first member and the second member can be increased.

さらに好ましくは、第２部材は、回転軸線方向において第２部分を挟むように設けられる。この場合、係止部は回転軸線方向のどちら側からの力に対しても第２部材を係止できるので、第２部材が第１部材からはずれないように第１部材と第２部材との接合強度をさらに大きくできる。   More preferably, the second member is provided so as to sandwich the second portion in the rotation axis direction. In this case, since the locking portion can lock the second member against a force from either side in the rotation axis direction, the first member and the second member are prevented from being detached from the first member. Bonding strength can be further increased.

好ましくは、第２部材は、径方向における第１部材の一端部から他端部まで設けられる。この場合、第１部材が破損することをさらに抑制できるとともに、第１部材と第２部材との接触面積が増加することによって第１部材と第２部材との接合強度をさらに大きくできる。   Preferably, the second member is provided from one end to the other end of the first member in the radial direction. In this case, the first member can be further prevented from being damaged, and the bonding strength between the first member and the second member can be further increased by increasing the contact area between the first member and the second member.

また好ましくは、係止部は、回転軸線方向において第１部材を貫通する貫通孔を有し、貫通孔の内周面によって第２部材を係止する。この場合、係止部は貫通孔の内周面によって第２部材を係止できるので、簡単な構成で第２部材を係止できるとともに、回転方向においても第１部材と第２部材との接合強度を大きくできる。   Further preferably, the locking portion has a through hole penetrating the first member in the rotation axis direction, and locks the second member by the inner peripheral surface of the through hole. In this case, since the locking portion can lock the second member by the inner peripheral surface of the through hole, the second member can be locked with a simple configuration, and the first member and the second member can be joined also in the rotation direction. Strength can be increased.

さらに好ましくは、係止部は、第１部材の前縁部から回転方向の後方に凹む凹部を有し、凹部の内面によって第２部材を係止する。この場合、係止部は第１部材の前縁部から回転方向の後方に凹む凹部の内面によって第２部材を係止できるので、径方向における第１部材と第２部材との接合強度をさらに大きくできる。   More preferably, the locking portion has a concave portion that is recessed rearward in the rotational direction from the front edge portion of the first member, and the second member is locked by the inner surface of the concave portion. In this case, since the locking portion can lock the second member by the inner surface of the recess recessed backward in the rotational direction from the front edge portion of the first member, the bonding strength between the first member and the second member in the radial direction can be further increased. Can be big.

好ましくは、回転方向における第１部材の前縁から第２部材の前縁までの寸法は、径方向の内側よりも外側の方が大きい。この場合、ブレードが回転しているときに、径方向の外方からの衝撃を受けやすい第１部材の外側が破損することをさらに抑制できる。   Preferably, the dimension from the front edge of the first member to the front edge of the second member in the rotation direction is larger on the outer side than on the inner side in the radial direction. In this case, when the blade is rotating, it is possible to further suppress the outer side of the first member that is susceptible to an impact from the outside in the radial direction from being damaged.

また、上述のブレードを備える、機器が提供される。   There is also provided an apparatus comprising the above-described blade.

この発明では、ブレードが破損や分離することを抑制できるので、機器を安定して使用できる。   In the present invention, since the blade can be prevented from being broken or separated, the apparatus can be used stably.

好ましくは、当該機器は航空機である。この場合、ブレードが破損や分離することを抑制できるので、ブレードを回転させることによって推進する航空機に好適に用いられる。   Preferably, the device is an aircraft. In this case, since the blade can be prevented from being broken or separated, the blade is suitably used for an aircraft that is propelled by rotating the blade.

また好ましくは、当該機器はボートである。この場合、ブレードが破損や分離することを抑制できるので、ブレードを回転させることによって推進するボートに好適に用いられる。   Also preferably, the device is a boat. In this case, since the blade can be prevented from being damaged or separated, the blade is suitably used for a boat propelled by rotating the blade.

さらに好ましくは、当該機器は送風機である。この場合、ブレードが破損や分離することを抑制できるので、ブレードを回転させることによって送風する送風機に好適に用いられる。   More preferably, the device is a blower. In this case, since the blade can be prevented from being broken or separated, the blade is preferably used for a blower that blows air by rotating the blade.

この発明によれば、ブレードが回転することによって生じる遠心力に対する第１部材と第２部材との接合強度を大きくできる、ブレードおよびそれを備える機器が得られる。   According to the present invention, a blade and a device including the blade that can increase the bonding strength between the first member and the second member against the centrifugal force generated by the rotation of the blade can be obtained.

この発明の一実施形態に係るブレードを示す斜視図である。It is a perspective view which shows the braid | blade which concerns on one Embodiment of this invention. （ａ）は、図１の実施形態に係るブレードを示す平面図であり、（ｂ）は、第１部材および第１連結部を示す平面図である。(A) is a top view which shows the braid | blade which concerns on embodiment of FIG. 1, (b) is a top view which shows a 1st member and a 1st connection part. 図２（ａ）のＡ−Ａ線断面斜視図である。FIG. 3 is a cross-sectional perspective view taken along line AA in FIG. （ａ）は、第２部分を示す平面図であり、（ｂ）は、第１部分を示す拡大図である。(A) is a top view which shows a 2nd part, (b) is an enlarged view which shows a 1st part. （ａ）は、第１部材および第２部材の他の例を示す平面図であり、（ｂ）は、第１部材および第２部材のその他の例を示す平面図である。(A) is a top view which shows the other example of a 1st member and a 2nd member, (b) is a top view which shows the other example of a 1st member and a 2nd member. （ａ）は、第１部材および第２部材のさらにその他の例を示す断面図であり、（ｂ）は、第１部材および第２部材の他の例を示す断面図である。(A) is sectional drawing which shows the other example of a 1st member and a 2nd member, (b) is sectional drawing which shows the other example of a 1st member and a 2nd member. 図１の実施形態に係るブレードを備えたマルチコプタを示す斜視図である。It is a perspective view which shows the multicopter provided with the braid | blade which concerns on embodiment of FIG. 図１の実施形態に係るブレードを備えたボートを示す側面図である。It is a side view which shows the boat provided with the braid | blade which concerns on embodiment of FIG. この発明の他の実施形態に係るブレードを備えた送風機を示す斜視図である。It is a perspective view which shows the air blower provided with the braid | blade which concerns on other embodiment of this invention.

以下、図面を参照してこの発明の実施形態について説明する。   Embodiments of the present invention will be described below with reference to the drawings.

図１〜図３を参照して、ブレード１０は、ハブ部１２、複数（この実施形態では、２つ）の第１部材１４、および複数（この実施形態では、２つ）の第２部材１６を含む。ブレード１０は、ハブ部１２の中央に形成される貫通孔１８、および回転軸線Ｘ（後述）に対する径方向において貫通孔１８の両側に形成される複数（この実施形態では、２つ）の貫通孔２０を介して、航空機等の機器に取り付けられる。そして、ブレード１０は、ハブ部１２（ブレード１０）の中心を回転軸線Ｘとして矢印Ｙで示す方向に回転される。なお、回転軸線Ｘに対する径方向とは、図２、図４および図５の矢印Ｚで示す方向である。   1 to 3, the blade 10 includes a hub portion 12, a plurality (two in this embodiment) of first members 14, and a plurality (two in this embodiment) of second members 16. including. The blade 10 includes a through hole 18 formed in the center of the hub portion 12 and a plurality (two in this embodiment) of through holes formed on both sides of the through hole 18 in the radial direction with respect to the rotation axis X (described later). It is attached to a device such as an aircraft via 20. The blade 10 is rotated in the direction indicated by the arrow Y with the center of the hub portion 12 (blade 10) as the rotation axis X. The radial direction with respect to the rotation axis X is the direction indicated by the arrow Z in FIGS.

ハブ部１２は、第１連結部２２、および複数（この実施形態では、２つ）の第２連結部２４を有する。貫通孔１８および各貫通孔２０は、回転軸線Ｘ方向において第１連結部２２および複数の第２連結部２４を貫通する。第１連結部２２は、回転軸線Ｘに対して径方向に延びる板状に形成され、複数の第１部材１４を相互に連結する。また、第１連結部２２は、回転軸線Ｘ方向の両主面に形成される複数（この実施形態では、２つ）の凹部２３を有する。各凹部２３は、回転軸線Ｘ方向に凹む。一方主面に形成される凹部２３は、回転軸線Ｘ方向に対する径方向において第１連結部２２の一端部から他端部まで延び、各第１部材１４のフランジ部３０（後述）の一方主面（第２部分３８）同士を連結する。他方主面に形成される凹部２３は、回転軸線Ｘ方向に対する径方向において第１連結部２２の一端部から他端部まで延び、各第１部材１４のフランジ部３０の他方主面（第２部分３８）同士を連結する。複数の第２連結部２４は、回転軸線Ｘ方向において第１連結部２２を挟む。各第２連結部２４は、対応する凹部２３を埋めるように形成される。また、各第２連結部２４は、回転軸線Ｘに対する径方向において対応する凹部２３の一端部から他端部まで延びる板状に形成され、複数の第２部材１６を相互に連結する。   The hub portion 12 includes a first connecting portion 22 and a plurality (two in this embodiment) of second connecting portions 24. The through hole 18 and each through hole 20 penetrate the first connecting portion 22 and the plurality of second connecting portions 24 in the rotation axis X direction. The first connecting portion 22 is formed in a plate shape extending in the radial direction with respect to the rotation axis X, and connects the plurality of first members 14 to each other. Moreover, the 1st connection part 22 has the several recessed part 23 formed in both the main surfaces of the rotation axis X direction (it is two in this embodiment). Each recess 23 is recessed in the rotation axis X direction. On the other hand, the concave portion 23 formed on the main surface extends from one end portion of the first connecting portion 22 to the other end portion in the radial direction with respect to the rotation axis X direction, and one main surface of a flange portion 30 (described later) of each first member 14. (Second portion 38) are connected to each other. The concave portion 23 formed on the other main surface extends from one end portion of the first connecting portion 22 to the other end portion in the radial direction with respect to the rotation axis X direction, and the other main surface (second surface) of the flange portion 30 of each first member 14. The portions 38) are connected to each other. The plurality of second connecting portions 24 sandwich the first connecting portion 22 in the rotation axis X direction. Each second connecting portion 24 is formed to fill the corresponding recess 23. Each second connecting portion 24 is formed in a plate shape extending from one end portion to the other end portion of the corresponding recess 23 in the radial direction with respect to the rotation axis X, and connects the plurality of second members 16 to each other.

複数の第１部材１４は、回転軸線Ｘに対して径方向に延び、回転軸線Ｘ方向から見て回転軸線Ｘに対して相互に点対称となるように、第１連結部２２に接続される。各第１部材１４は、本体部２６および係止部２８を有する。この実施形態では、複数の第１部材１４および第１連結部２２は、ＣＦＲＰ（炭素繊維強化プラスチック）からなり、一体的に形成される。また、第１部材１４は、第２部材１６よりも曲げ弾性率が高く、第２部材１６よりも融点が高い。   The plurality of first members 14 extend in the radial direction with respect to the rotation axis X, and are connected to the first connecting portion 22 so as to be point-symmetric with respect to the rotation axis X when viewed from the rotation axis X direction. . Each first member 14 has a main body portion 26 and a locking portion 28. In this embodiment, the plurality of first members 14 and the first connecting portion 22 are made of CFRP (carbon fiber reinforced plastic) and are integrally formed. The first member 14 has a higher flexural modulus than the second member 16 and a higher melting point than the second member 16.

本体部２６は、回転軸線Ｘに対して径方向に延びる板状に形成され、第１連結部２２に接続される。   The main body portion 26 is formed in a plate shape extending in the radial direction with respect to the rotation axis X, and is connected to the first connecting portion 22.

係止部２８は、フランジ部３０、および複数（この実施形態では、１４個）の貫通孔３２を有し、第２部材１６を係止する。   The locking portion 28 has a flange portion 30 and a plurality (14 in this embodiment) of through holes 32 to lock the second member 16.

フランジ部３０は、回転方向Ｙにおいて本体部２６の前縁部３４に設けられる。フランジ部３０は、回転軸線Ｘ方向における本体部２６の前縁部３４の中央から前方に突出し、回転軸線Ｘに対する径方向において本体部２６の前縁部３４の一端部から他端部まで延びる鍔状に形成され、第１連結部２２に接続される。ここで、図４（ａ）を参照して、この実施形態では、フランジ部３０の回転軸線Ｘ方向の両主面が、第２部分３８に相当する（斜線部分参照）。このように、第２部分３８は、回転軸線Ｘに対して径方向に延びる。フランジ部３０の一方主面（第２部分３８）は、第１連結部２２の一方主面に形成される凹部２３に接続され、フランジ部３０の他方主面（第２部分３８）は、第１連結部２２の他方主面に形成される凹部２３に接続される。   The flange portion 30 is provided at the front edge portion 34 of the main body portion 26 in the rotation direction Y. The flange portion 30 projects forward from the center of the front edge portion 34 of the main body portion 26 in the rotation axis X direction, and extends from one end portion to the other end portion of the front edge portion 34 of the main body portion 26 in the radial direction with respect to the rotation axis line X. And is connected to the first connecting portion 22. Here, referring to FIG. 4A, in this embodiment, both main surfaces of the flange portion 30 in the direction of the rotation axis X correspond to the second portion 38 (see the shaded portion). Thus, the second portion 38 extends in the radial direction with respect to the rotation axis X. One main surface (second portion 38) of the flange portion 30 is connected to the recess 23 formed on the one main surface of the first connecting portion 22, and the other main surface (second portion 38) of the flange portion 30 is the first main surface. It is connected to a recess 23 formed on the other main surface of one connecting portion 22.

複数の貫通孔３２は、回転軸線Ｘ方向においてフランジ部３０を貫通し、回転軸線Ｘに対する径方向において略一列かつ略等間隔に並んで形成される。また、各貫通孔３２は、断面円形に形成される。ここで、図４（ａ）に示す範囲Ｅの拡大図である図４（ｂ）を参照して、この実施形態では、各貫通孔３２のそれぞれの内周面のうち、回転軸線Ｘに対する径方向の外方側半分が、第１部分３６に相当する（太線部分参照）。このように、第１部分３６は、回転軸線Ｘ方向から見て円弧状に形成される。各貫通孔３２には、第２部材１６の引掛部４６（後述）が嵌合される。係止部２８は、貫通孔３２の内周面によって引掛部４６（第２部材１６）を係止する。特に、回転軸線Ｘに対する径方向において、係止部２８は、引掛部４６（第２部材１６）よりも外方に位置する第１部分３６によって引掛部４６（第２部材１６）を係止する（図２（ａ）および図４（ｂ）参照）。   The plurality of through holes 32 pass through the flange portion 30 in the rotation axis X direction, and are formed in a row and in substantially equal intervals in the radial direction with respect to the rotation axis X. Each through hole 32 is formed in a circular cross section. Here, referring to FIG. 4B, which is an enlarged view of the range E shown in FIG. 4A, in this embodiment, the diameter with respect to the rotation axis X of each inner peripheral surface of each through hole 32 is shown. The outer half of the direction corresponds to the first portion 36 (see the bold line portion). Thus, the 1st part 36 is formed in circular arc shape seeing from the rotation axis X direction. A hooking portion 46 (described later) of the second member 16 is fitted in each through hole 32. The locking portion 28 locks the hooking portion 46 (second member 16) with the inner peripheral surface of the through hole 32. In particular, in the radial direction with respect to the rotation axis X, the locking portion 28 locks the hooking portion 46 (second member 16) by the first portion 36 located outward from the hooking portion 46 (second member 16). (See FIG. 2 (a) and FIG. 4 (b)).

複数の第２部材１６は、回転軸線Ｘに対して径方向に延び、回転軸線Ｘ方向から見て回転軸線Ｘに対して相互に点対称となるように設けられる。一方の第２部材１６は、回転軸線Ｘに対する径方向において、各第２連結部２４の一端部に接続される。他方の第２部材１６は、回転軸線Ｘに対する径方向において、各第２連結部２４の他端部に接続される。各第２部材１６は、回転軸線Ｘ方向においてフランジ部３０（第２部分３８）を挟むように設けられ、回転軸線Ｘに対する径方向において第１部材１４の一端部から他端部まで設けられる。各第２部材１６は、第１板状部４０、第２板状部４２、突出部４４、および複数（この実施形態では、１４個）の引掛部４６を有する。第１板状部４０は、回転軸線Ｘ方向においてフランジ部３０の一方主面（第２部分３８）に形成され、回転軸線Ｘに対する径方向においてフランジ部３０（第２部分３８）の一端部から他端部まで延びる板状に形成される。第２板状部４２は、回転軸線Ｘ方向においてフランジ部３０の他方主面（第２部分３８）に形成され、回転軸線Ｘに対する径方向においてフランジ部３０（第２部分３８）の一端部から他端部まで延びる板状に形成される。突出部４４は、回転方向Ｙにおいて、フランジ部３０の前縁部４８よりも前方に位置するように設けられ、第１板状部４０と第２板状部４２とを連結する。また、突出部４４は、回転軸線Ｘに対する径方向において、フランジ部３０の前縁部４８の一端部から他端部まで設けられる。回転方向Ｙにおける突出部４４の寸法（フランジ部３０の前縁部４８から突出部４４の前縁部５０までの寸法）は、回転軸線Ｘに対する径方向の内側の寸法Ｄ１よりも外側の寸法Ｄ２の方が大きい（図２（ａ）参照）。これによって、回転軸線Ｘに対する径方向において、ブレード１０の内側は、第１部材１４によって剛性を確保でき、ブレード１０の外側は、第２部材１６によって衝撃を吸収できる。複数の引掛部４６は、回転軸線Ｘ方向において第１板状部４０と第２板状部４２とを連結し、回転軸線Ｘに対する径方向において略一列かつ略等間隔に並んで形成される。各引掛部４６は、対応する貫通孔３２の内周面に接触するように貫通孔３２に嵌合される。この実施形態では、複数の第２部材１６および複数の第２連結部２４は、ＵＨＭＷＰＥ（超高分子量ポリエチレン）からなり、一体的に形成される。また、第２部材１６は、第１部材１４よりも衝撃値が高い。   The plurality of second members 16 extend in the radial direction with respect to the rotation axis X, and are provided so as to be point-symmetric with respect to the rotation axis X when viewed from the rotation axis X direction. One second member 16 is connected to one end of each second connecting portion 24 in the radial direction with respect to the rotation axis X. The other second member 16 is connected to the other end of each second connecting portion 24 in the radial direction with respect to the rotation axis X. Each second member 16 is provided so as to sandwich the flange portion 30 (second portion 38) in the rotation axis X direction, and is provided from one end to the other end of the first member 14 in the radial direction with respect to the rotation axis X. Each second member 16 includes a first plate-like portion 40, a second plate-like portion 42, a protruding portion 44, and a plurality (14 in this embodiment) of hook portions 46. The first plate-like portion 40 is formed on one main surface (second portion 38) of the flange portion 30 in the rotation axis X direction, and from one end portion of the flange portion 30 (second portion 38) in the radial direction with respect to the rotation axis X. It is formed in a plate shape extending to the other end. The second plate-like portion 42 is formed on the other main surface (second portion 38) of the flange portion 30 in the rotation axis X direction, and from one end portion of the flange portion 30 (second portion 38) in the radial direction with respect to the rotation axis X. It is formed in a plate shape extending to the other end. The projecting portion 44 is provided so as to be positioned in front of the front edge portion 48 of the flange portion 30 in the rotational direction Y, and connects the first plate-like portion 40 and the second plate-like portion 42. Further, the protruding portion 44 is provided from one end portion to the other end portion of the front edge portion 48 of the flange portion 30 in the radial direction with respect to the rotation axis X. The dimension of the protrusion 44 in the rotation direction Y (the dimension from the front edge 48 of the flange 30 to the front edge 50 of the protrusion 44) is a dimension D2 outside the inner dimension D1 in the radial direction with respect to the rotation axis X. Is larger (see FIG. 2A). Accordingly, in the radial direction with respect to the rotation axis X, the inner side of the blade 10 can ensure rigidity by the first member 14, and the outer side of the blade 10 can absorb the impact by the second member 16. The plurality of hooking portions 46 connect the first plate-like portion 40 and the second plate-like portion 42 in the direction of the rotation axis X, and are formed in a row and in substantially equal intervals in the radial direction with respect to the rotation axis X. Each hooking portion 46 is fitted into the through hole 32 so as to contact the inner peripheral surface of the corresponding through hole 32. In this embodiment, the plurality of second members 16 and the plurality of second connecting portions 24 are made of UHMWPE (ultra high molecular weight polyethylene) and are integrally formed. Further, the second member 16 has a higher impact value than the first member 14.

このようなブレード１０によれば、フランジ部３０（第１部材１４）の前縁部４８の一端部から他端部に、フランジ部３０（第１部材１４）の前縁部４８よりも前方に位置するように第２部材１６が設けられるので、ブレード１０が回転しているときに、ブレード１０が回転軸線Ｘに対して径方向の外方から衝撃を受けたとしても、第１部材１４が破損することを第２部材１６によって抑制できる。そして、係止部２８は回転軸線Ｘに対する径方向において引掛部４６（第２部材１６）よりも外方に位置する第１部分３６を有するので、ブレード１０が回転されることによって遠心力が生じたとしても、第２部材１６が第１部材１４からはずれないように第２部材１６を係止でき、第１部材１４と第２部材１６との接合強度を大きくできる。   According to the blade 10, the front edge 48 of the flange 30 (first member 14) is moved from one end to the other end of the flange 30 (first member 14) and forward of the front edge 48 of the flange 30 (first member 14). Since the second member 16 is provided so as to be positioned, even if the blade 10 receives an impact from the outside in the radial direction with respect to the rotation axis X when the blade 10 is rotating, the first member 14 is The second member 16 can suppress breakage. And since the latching | locking part 28 has the 1st part 36 located outward rather than the hook part 46 (2nd member 16) in the radial direction with respect to the rotating shaft X, centrifugal force arises when the braid | blade 10 rotates. Even so, the second member 16 can be locked so that the second member 16 does not come off the first member 14, and the bonding strength between the first member 14 and the second member 16 can be increased.

第１部材１４は第２部材１６よりも曲げ弾性率が高く、第２部材１６は第１部材１４よりも衝撃値が高いので、第１部材１４によってブレード１０の剛性を確保でき、第２部材１６によってブレード１０が破断することを抑制できる。   Since the first member 14 has a higher flexural modulus than the second member 16, and the second member 16 has a higher impact value than the first member 14, the rigidity of the blade 10 can be secured by the first member 14, and the second member 16 can prevent the blade 10 from breaking.

係止部２８は回転軸線Ｘ方向において第２部材１６と重なる第２部分３８を有するので、第１部材１４および第２部材１６が回転軸線Ｘ方向に力を受けたとしても、第２部材１６が第１部材１４からはずれないように第２部材１６を係止でき、第１部材１４と第２部材１６との接合強度を大きくできる。   Since the locking portion 28 has the second portion 38 that overlaps the second member 16 in the rotation axis X direction, even if the first member 14 and the second member 16 receive a force in the rotation axis X direction, the second member 16. The second member 16 can be locked so that the first member 14 does not come off from the first member 14, and the bonding strength between the first member 14 and the second member 16 can be increased.

第２部材１６は、回転軸線Ｘに対する径方向における第１部材１４の一端部から他端部まで設けられるので、第１部材１４が破損することをさらに抑制できるとともに、第１部材１４と第２部材１６との接触面積が増加することによって第１部材１４と第２部材１６との接合強度をさらに大きくできる。   Since the second member 16 is provided from one end to the other end of the first member 14 in the radial direction with respect to the rotation axis X, the first member 14 and the second member 14 can be further prevented from being damaged. By increasing the contact area with the member 16, the bonding strength between the first member 14 and the second member 16 can be further increased.

複数の第２部材１６は、複数の第２連結部２３によって相互に連結されるので、各第２部材１６が第１部材１４から分離することを抑制できる。   Since the plurality of second members 16 are connected to each other by the plurality of second connecting portions 23, it is possible to suppress the separation of each second member 16 from the first member 14.

回転方向Ｙにおけるフランジ部３０（第１部材１４）の前縁部４８から突出部４４（第２部材１６）の前縁部５０までの寸法は、回転軸線Ｘに対する径方向の内側の寸法Ｄ１よりも外側の寸法Ｄ２の方が大きいので、ブレード１０が回転しているときに、回転軸線Ｘに対して径方向の外方からの衝撃を受けやすい第１部材１４の外側が破損することをさらに抑制できる。   The dimension from the front edge part 48 of the flange part 30 (first member 14) to the front edge part 50 of the projecting part 44 (second member 16) in the rotational direction Y is based on a dimension D1 inside in the radial direction with respect to the rotation axis X. Since the outer dimension D2 is larger, when the blade 10 is rotating, the outer side of the first member 14 that is susceptible to an impact from the outside in the radial direction with respect to the rotation axis X is further damaged. Can be suppressed.

上述した作用効果は、後述する図５および図６に示す第１部材および第２部材を用いた場合においても同様に奏する。   The above-described operation and effect are similarly achieved when the first member and the second member shown in FIGS. 5 and 6 described later are used.

第２部材１６は、回転軸線Ｘ方向において第２部分３８を挟むように設けられるので、係止部２８は回転軸線Ｘ方向のどちら側からの力に対しても第２部材１６を係止でき、第２部材１６が第１部材１４からはずれないように第１部材１４と第２部材１６との接合強度をさらに大きくできる。上述した作用効果は、後述する図５および図６（ｂ）に示す第１部材および第２部材を用いた場合においても同様に奏する。   Since the second member 16 is provided so as to sandwich the second portion 38 in the rotation axis X direction, the locking portion 28 can lock the second member 16 against a force from either side in the rotation axis X direction. The bonding strength between the first member 14 and the second member 16 can be further increased so that the second member 16 does not come off the first member 14. The above-described operational effects are similarly achieved when the first member and the second member shown in FIGS. 5 and 6B described later are used.

係止部２８は貫通孔３２の内周面によって第２部材１６を係止できるので、簡単な構成で第２部材１６を係止できるとともに、回転方向Ｙにおいても第１部材１４と第２部材１６との接合強度を大きくできる。上述した作用効果は、後述する図６に示す第１部材および第２部材を用いた場合においても同様に奏する。   Since the locking portion 28 can lock the second member 16 by the inner peripheral surface of the through hole 32, the second member 16 can be locked with a simple configuration, and the first member 14 and the second member also in the rotational direction Y. 16 can be increased in strength. The above-described operation and effect are similarly achieved when a first member and a second member shown in FIG. 6 described later are used.

図５（ａ）を参照して、第１部材および第２部材の他の例について説明する。   With reference to Fig.5 (a), the other example of a 1st member and a 2nd member is demonstrated.

第１部材１４ａは、複数の貫通孔３２を有さず、複数（この例では、７個）の凹部５２ａを有する点において第１部材１４と異なる。各凹部５２ａは、フランジ部３０ａ（第１部材１４ａ）の前縁部４８ａから後方に凹み、回転軸線Ｘ方向においてフランジ部３０ａの一方主面から他方主面まで形成される。第２部材１６ａは、複数の引掛部４６を有さず、複数（この例では、７個）の引掛部４６ａを有する点において第２部材１６と異なる。各引掛部４６ａは、対応する凹部５２ａの内面に接触するように凹部５２ａに嵌合される。この例では、各凹部５２ａの側面のうち、回転軸線Ｘに対する径方向の外方側の側面が、第１部分３６ａに相当する（太点線部分参照）。   The first member 14a is different from the first member 14 in that it does not have a plurality of through holes 32 but has a plurality (seven in this example) of recesses 52a. Each concave portion 52a is recessed backward from the front edge portion 48a of the flange portion 30a (first member 14a), and is formed from one main surface to the other main surface of the flange portion 30a in the rotation axis X direction. The second member 16a is different from the second member 16 in that the second member 16a does not have a plurality of hooking portions 46 and has a plurality of (in this example, seven) hooking portions 46a. Each hooking portion 46a is fitted into the recess 52a so as to contact the inner surface of the corresponding recess 52a. In this example, of the side surfaces of each recess 52a, the side surface on the outer side in the radial direction with respect to the rotation axis X corresponds to the first portion 36a (see the thick dotted line portion).

このような第１部材１４ａおよび第２部材１６ａを用いた場合、係止部２８ａはフランジ部３０ａ（第１部材１４ａ）の前縁部４８ａから回転方向Ｙの後方に凹む凹部５２ａの内面によって引掛部４６ａ（第２部材１６ａ）を係止できるので、回転軸線Ｘに対する径方向における第１部材１４ａと第２部材１６ａとの接合強度を大きくできるとともにブレードを容易に製造できる。   When the first member 14a and the second member 16a are used, the locking portion 28a is hooked by the inner surface of the concave portion 52a that is recessed rearward in the rotational direction Y from the front edge portion 48a of the flange portion 30a (first member 14a). Since the portion 46a (second member 16a) can be locked, the bonding strength between the first member 14a and the second member 16a in the radial direction with respect to the rotation axis X can be increased, and the blade can be easily manufactured.

図５（ｂ）を参照して、第１部材および第２部材のその他の例について説明する。   With reference to FIG.5 (b), the other example of a 1st member and a 2nd member is demonstrated.

第１部材１４ｂは、複数の貫通孔３２を有さず、複数（この例では、８個）の凹部５２ｂを有する点において第１部材１４と異なる。各凹部５２ｂは、フランジ部３０ｂ（第１部材１４ｂ）の前縁部４８ｂから後方に凹み、回転軸線Ｘ方向においてフランジ部３０ｂの一方主面から他方主面まで形成される。また、各凹部５２ｂは、後方に向かって漸次幅広となる部分を有する。第２部材１６ｂは、複数の引掛部４６を有さず、複数（この例では、８個）の引掛部４６ｂを有する点において第２部材１６と異なる。各引掛部４６ｂは、対応する凹部５２ｂの内面に接触するように凹部５２ｂに嵌合される。この例では、各凹部５２ｂの側面のうち、回転軸線Ｘに対する径方向の外方側の側面が、第１部分３６ｂに相当する（太点線部分参照）。   The first member 14b is different from the first member 14 in that it does not have a plurality of through holes 32 but has a plurality (eight in this example) of recesses 52b. Each concave portion 52b is recessed backward from the front edge portion 48b of the flange portion 30b (first member 14b), and is formed from one main surface to the other main surface of the flange portion 30b in the rotation axis X direction. Moreover, each recessed part 52b has a part which becomes gradually wide toward the back. The second member 16b is different from the second member 16 in that the second member 16b does not have a plurality of hooks 46 and has a plurality (eight in this example) of hooks 46b. Each hooking portion 46b is fitted into the recess 52b so as to contact the inner surface of the corresponding recess 52b. In this example, of the side surfaces of each recess 52b, the side surface on the outer side in the radial direction with respect to the rotation axis X corresponds to the first portion 36b (see the thick dotted line portion).

このような第１部材１４ｂおよび第２部材１６ｂを用いた場合、第１部材１４ａおよび第２部材１６ａを用いた場合と同様の作用効果が得られる。さらに、係止部２８ｂは、回転方向Ｙにおいても第２部材１６ｂを係止できるので、第１部材１４ｂと第２部材１６ｂとの接合強度をさらに大きくできる。   When such a first member 14b and a second member 16b are used, the same effect as that obtained when the first member 14a and the second member 16a are used can be obtained. Furthermore, since the latching | locking part 28b can latch the 2nd member 16b also in the rotation direction Y, the joining strength of the 1st member 14b and the 2nd member 16b can be enlarged further.

図６（ａ）を参照して、第１部材および第２部材のさらにその他の例について説明する。この例では、第２部材１６ｃは、回転軸線Ｘ方向において、フランジ部３０ｃを挟まず、フランジ部３０ｃと重なるように設けられる。   Still another example of the first member and the second member will be described with reference to FIG. In this example, the second member 16c is provided so as to overlap the flange portion 30c without sandwiching the flange portion 30c in the direction of the rotation axis X.

第１部材１４ｃは、フランジ部３０および複数の貫通孔３２を有さず、フランジ部３０よりも回転軸線Ｘ方向の厚みが大きいフランジ部３０ｃ、および貫通孔３２よりも回転軸線Ｘ方向の寸法が大きくかつフランジ部３０ｃを貫通する貫通孔３２ｃを有する点において第１部材１４と異なる。第２部材１６ｃは、第２板状部４２および複数の引掛部４６を有さず、複数の引掛部４６よりも回転軸線Ｘ方向の厚みが大きい複数の引掛部４６ｃを有する点において第２部材１６と異なる。各引掛部４６ｃは、対応する貫通孔３２ｃの内周面に接触するように貫通孔３２に嵌合される。   The first member 14 c does not have the flange portion 30 and the plurality of through holes 32, and has a dimension in the rotation axis X direction larger than that of the flange portion 30 c and the through hole 32 having a larger thickness in the rotation axis X direction than the flange portion 30. It differs from the 1st member 14 in the point which has the through-hole 32c which is large and penetrates the flange part 30c. The second member 16c does not have the second plate-like portion 42 and the plurality of hooking portions 46, but has a plurality of hooking portions 46c whose thickness in the rotation axis X direction is larger than that of the plurality of hooking portions 46. 16 and different. Each hooking portion 46c is fitted into the through hole 32 so as to contact the inner peripheral surface of the corresponding through hole 32c.

このような第１部材１４ｃおよび第２部材１６ｃを用いた場合、第２部材１６ｃは第１部材１４ｃを挟まないように設けられるので、ブレードを容易に製造できる。   When such first member 14c and second member 16c are used, the second member 16c is provided so as not to sandwich the first member 14c, and therefore the blade can be easily manufactured.

図６（ｂ）を参照して、第１部材および第２部材の他の例について説明する。この例では、第２部材１６ｄは、回転軸線Ｘ方向において第１板状部４０および第３板状部５６ｄ（後述）によってフランジ部３０ｄの一部を挟むように設けられる。   With reference to FIG. 6B, another example of the first member and the second member will be described. In this example, the second member 16d is provided so that a part of the flange portion 30d is sandwiched between a first plate-like portion 40 and a third plate-like portion 56d (described later) in the direction of the rotation axis X.

第１部材１４ｄは、複数の貫通孔３２ｃを有さず、複数の貫通孔３２および凹部５４ｄを有する点において第１部材１４ｃと異なる。凹部５４ｄは、フランジ部３０ｄの第１板状部４０側とは反対側の主面に形成される。凹部５４ｄは、回転軸線Ｘ方向に凹み、貫通孔３２に接続される。また、凹部５４ｄは、回転軸線Ｘに対する径方向において、各貫通孔３２を結ぶように、フランジ部３０ｄの一端部から他端部まで延びる。第２部材１６ｄは、複数の引掛部４６ｃを有さず、複数の引掛部４６および第３板状部５６ｄを有する点において第２部材１６ｃと異なる。第３板状部５６ｄは、凹部５４ｄを埋めるように設けられ、各引掛部４６に接続される。   The first member 14d is different from the first member 14c in that it does not have the plurality of through holes 32c but has the plurality of through holes 32 and the recesses 54d. The recessed part 54d is formed in the main surface on the opposite side to the 1st plate-shaped part 40 side of the flange part 30d. The recess 54 d is recessed in the rotation axis X direction and connected to the through hole 32. Further, the concave portion 54d extends from one end portion of the flange portion 30d to the other end portion so as to connect the through holes 32 in the radial direction with respect to the rotation axis X. The second member 16d is different from the second member 16c in that the second member 16d does not have the plurality of hooking portions 46c but has the plurality of hooking portions 46 and the third plate-like portion 56d. The third plate-like portion 56d is provided so as to fill the concave portion 54d, and is connected to each hooking portion 46.

このような第１部材１４ｄおよび第２部材１６ｄを用いた場合、第２部材１６ｄは第１部材１４ｄの一部を挟むように設けられるので、ブレードを容易に製造できるとともに、第１部材１４ｄと第２部材１６ｄとの接合強度を大きくできる。   When such a first member 14d and second member 16d are used, the second member 16d is provided so as to sandwich a part of the first member 14d, so that the blade can be easily manufactured, and the first member 14d and The bonding strength with the second member 16d can be increased.

図７〜図９を参照して、ブレードを備える機器（マルチコプタ１００、ボート２００および送風機３００）について説明する。   With reference to FIGS. 7-9, the apparatus (multicopter 100, the boat 200, and the air blower 300) provided with a braid | blade is demonstrated.

図７を参照して、航空機の一例としてのマルチコプタ１００は、主支持部１０２を含む。主支持部１０２は、円板状のハブ部１０４と、複数（この実施形態では、６個）の円柱状のスポーク部１０６とを含む。６個のスポーク部１０６は、ハブ部１０４の側面において周方向に略等間隔（略６０度間隔）をあけて設けられ、かつ放射状に延びるように形成される。各スポーク部１０６の先端部には、駆動源である電動モータ１０８が回転自在に設けられ、電動モータ１０８には、ブレード１０が取り付けられる。電動モータ１０８によってブレード１０が回転駆動される。また、マルチコプタ１００は、無線信号を送受信するためのアンテナ１１０、マルチコプタ１００の動作を制御するための制御装置（図示せず）、および脚部ユニット１１２を備える。アンテナ１１０は、主支持部１０２の中央部から上方に延び、制御装置は、主支持部１０２内に収容される。脚部ユニット１１２は、複数（この実施形態では、４個）の脚部１１４を有し、主支持部１０２から下方に延びる。   Referring to FIG. 7, a multicopter 100 as an example of an aircraft includes a main support portion 102. The main support portion 102 includes a disc-shaped hub portion 104 and a plurality of (six in this embodiment) columnar spoke portions 106. The six spoke portions 106 are provided at substantially equal intervals (approximately 60 ° intervals) in the circumferential direction on the side surface of the hub portion 104 and are formed to extend radially. An electric motor 108 that is a drive source is rotatably provided at the tip of each spoke portion 106, and the blade 10 is attached to the electric motor 108. The blade 10 is rotationally driven by the electric motor 108. The multicopter 100 includes an antenna 110 for transmitting and receiving radio signals, a control device (not shown) for controlling the operation of the multicopter 100, and a leg unit 112. The antenna 110 extends upward from the central portion of the main support portion 102, and the control device is accommodated in the main support portion 102. The leg unit 112 has a plurality of (four in this embodiment) leg portions 114 and extends downward from the main support portion 102.

このようなマルチコプタ１００によれば、ブレード１０が破損や分離することを抑制できるので、マルチコプタ１００を安定して使用できる。このように、ブレード１０は、ブレード１０を回転させることによって推進するマルチコプタ１００に好適に用いられる。   According to such a multicopter 100, the blade 10 can be prevented from being damaged or separated, so that the multicopter 100 can be used stably. Thus, the blade 10 is preferably used in the multicopter 100 that is propelled by rotating the blade 10.

図８を参照して、ボート２００は、本体部２０２、駆動源２０４、ブレード１０、および舵２０６を含む。本体部２０２は、前後方向に延びる。駆動源２０４は、本体部２０２上に設けられる。ブレード１０は、駆動源２０４の後部に接続され、駆動源２０４によって回転駆動される。舵２０６は、板状に形成され、ブレード１０の後方に設けられる。   Referring to FIG. 8, the boat 200 includes a main body 202, a drive source 204, a blade 10, and a rudder 206. The main body 202 extends in the front-rear direction. The drive source 204 is provided on the main body 202. The blade 10 is connected to the rear portion of the drive source 204 and is driven to rotate by the drive source 204. The rudder 206 is formed in a plate shape and is provided behind the blade 10.

このようなボート２００によれば、ブレード１０が破損や分離することを抑制できるので、ボート２００を安定して使用できる。このように、ブレード１０は、ブレード１０を回転させることによって推進するボート２００に好適に用いられる。   According to such a boat 200, since the blade 10 can be prevented from being damaged or separated, the boat 200 can be used stably. As described above, the blade 10 is preferably used in the boat 200 that is propelled by rotating the blade 10.

図９を参照して、送風機３００は、本体部３０２、および複数（この実施形態では、３個）のブレード１０ｅを含む。本体部３０２は、円筒状に形成される円筒部３０４を有する。複数のブレード１０ｅは、円筒部３０４内に設けられ、図示しない駆動源によって回転駆動される。複数のブレード１０ｅはそれぞれ、ハブ部１２ｅ、複数（この実施形態では、３個）の第１部材１４、および複数（この実施形態では、３個）の第２部材１６を有する。ハブ部１２ｅは、複数の第１部材１４を放射状に連結する。   Referring to FIG. 9, the blower 300 includes a main body portion 302 and a plurality (three in this embodiment) of blades 10e. The main body 302 has a cylindrical portion 304 formed in a cylindrical shape. The plurality of blades 10e are provided in the cylindrical portion 304 and are rotationally driven by a driving source (not shown). Each of the plurality of blades 10e includes a hub portion 12e, a plurality (three in this embodiment) of first members 14, and a plurality (three in this embodiment) of second members 16. The hub portion 12e connects the plurality of first members 14 radially.

このような送風機３００によれば、ブレード１０ｅが破損や分離することを抑制できるので、送風機３００を安定して使用できる。このように、ブレード１０ｅは、ブレード１０ｅを回転させることによって送風する送風機３００に好適に用いられる。   According to such a blower 300, the blade 10e can be prevented from being damaged or separated, so that the blower 300 can be used stably. Thus, the blade 10e is suitably used for the blower 300 that blows air by rotating the blade 10e.

図７および図８のブレード１０は、第１部材１４に代えて第１部材１４ａ〜１４ｄを有していてもよく、第２部材１６に代えて第２部材１６ａ〜１６ｄを有していてもよい。   7 and 8 may have first members 14a to 14d instead of the first member 14, and may have second members 16a to 16d instead of the second member 16. Good.

図９のブレード１０ｅは、第１部材１４に代えて第１部材１４ａ〜１４ｄを有していてもよく、第２部材１６に代えて第２部材１６ａ〜１６ｄを有していてもよい。   The blade 10 e in FIG. 9 may include first members 14 a to 14 d instead of the first member 14, and may include second members 16 a to 16 d instead of the second member 16.

上述した実施形態では、ブレードが、２つの第１部材および２つの第２部材を有する場合や、３個の第１部材および３個の第２部材を有する場合について説明したが、これに限定されない。たとえば、ブレードは、１つの第１部材および１つの第２部材を有していてもよく、４個以上の第１部材および４個以上の第２部材を有していてもよい。   In the above-described embodiment, the case where the blade has two first members and two second members or the case where the blade has three first members and three second members has been described, but the present invention is not limited to this. . For example, the blade may have one first member and one second member, and may have four or more first members and four or more second members.

上述した実施形態では、第２部材１６（１６ａ〜１６ｄ）が、回転軸線Ｘに対する径方向において第１部材１４（１４ａ〜１４ｄ）の一端部から他端部まで設けられる場合について説明したが、これに限定されない。第２部材は、回転軸線Ｘに対する径方向において少なくとも第１部材１４（１４ａ〜１４ｄ）の外端部に設けられればよい。   In the above-described embodiment, the case where the second member 16 (16a to 16d) is provided from one end to the other end of the first member 14 (14a to 14d) in the radial direction with respect to the rotation axis X has been described. It is not limited to. The second member may be provided at least at the outer end of the first member 14 (14a to 14d) in the radial direction with respect to the rotation axis X.

上述した実施形態では、第２部材１６（１６ａ〜１６ｄ）が、回転軸線Ｘ方向において第１部材１４（１４ａ〜１４ｄ）と重なる場合について説明したが、これに限定されない。第２部材は、第１部材１４（１４ａ〜１４ｄ）の前縁部４８（４８ａ〜４８ｄ）よりも少なくとも前方に設けられればよく、回転軸線Ｘ方向において第１部材１４（１４ａ〜１４ｄ）と重ならなくてもよい。   Although embodiment mentioned above demonstrated the case where the 2nd member 16 (16a-16d) overlaps with the 1st member 14 (14a-14d) in the rotating shaft X direction, it is not limited to this. The second member only needs to be provided at least in front of the front edge portion 48 (48a to 48d) of the first member 14 (14a to 14d), and overlaps the first member 14 (14a to 14d) in the rotation axis X direction. It doesn't have to be.

上述した実施形態では、第１部材１４（１４ａ〜１４ｄ）が、ＣＦＲＰ（炭素繊維強化プラスチック）からなり、第２部材１６（１６ａ〜１６ｄ）が、ＵＨＭＷＰＥ（超高分子量ポリエチレン）からなる場合について説明したが、これに限定されない。たとえば、第１部材が、ＵＨＭＷＰＥ（超高分子量ポリエチレン）からなり、第２部材が、ＣＦＲＰ（炭素繊維強化プラスチック）からなってもよい。   In the above-described embodiment, the first member 14 (14a to 14d) is made of CFRP (carbon fiber reinforced plastic), and the second member 16 (16a to 16d) is made of UHMWPE (ultra high molecular weight polyethylene). However, it is not limited to this. For example, the first member may be made of UHMWPE (ultra high molecular weight polyethylene), and the second member may be made of CFRP (carbon fiber reinforced plastic).

また、第１部材を、複合成形品、炭素繊維含有の射出成形品、またはプレス成形品で構成し、第２部材を、射出成形品（ＰＡ、ＰＰ系）で構成してもよい。   Further, the first member may be composed of a composite molded product, an injection molded product containing carbon fiber, or a press molded product, and the second member may be composed of an injection molded product (PA, PP type).

また、第１部材および第２部材に着色部材を用いることによって、ブレードを着色してもよい。この場合、ブレードの視認性が向上する。   Moreover, you may color a braid | blade by using a coloring member for the 1st member and the 2nd member. In this case, the visibility of the blade is improved.

上述した実施形態では、複数の貫通孔３２（３２ｃ）が、回転軸線Ｘに対する径方向に略一列に並んで形成される場合について説明したが、これに限定されない。たとえば、回転軸線Ｘに対する径方向に延びるスリット状の貫通孔が不規則に並んで形成されてもよい。   In the above-described embodiment, the case where the plurality of through holes 32 (32c) are formed in a row in the radial direction with respect to the rotation axis X has been described, but the present invention is not limited to this. For example, slit-like through holes extending in the radial direction with respect to the rotation axis X may be formed in an irregular manner.

上述した実施形態では、第２部材１６（１６ａ，１６ｂ，１６ｄ）は、フランジ部３０（３０ａ，３０ｂ，３０ｄ）を挟むように設けられる場合について説明したが、これに限定されない。たとえば、第１部材は、フランジ部を有さず、第２部材は、第１部材の本体部を挟むように設けられ、第１部材の本体部に形成された貫通孔に係止されてもよい。   In the above-described embodiment, the case where the second member 16 (16a, 16b, 16d) is provided so as to sandwich the flange portion 30 (30a, 30b, 30d) is described, but the present invention is not limited to this. For example, the first member does not have a flange portion, and the second member is provided so as to sandwich the main body portion of the first member, and is locked in a through hole formed in the main body portion of the first member. Good.

また、第２部材は、第１部材１４（１４ａ〜１４ｄ）全体を覆うように設けられてもよい。   In addition, the second member may be provided so as to cover the entire first member 14 (14a to 14d).

上述した実施形態では、この発明に係るブレードを備えるマルチコプタ１００、ボート２００および送風機３００について説明したが、これに限定されない。たとえば、この発明に係るブレードは、固定翼航空機のプロペラ、風車等にも適用できる。   In the above-described embodiment, the multicopter 100, the boat 200, and the blower 300 including the blade according to the present invention have been described. However, the present invention is not limited to this. For example, the blade according to the present invention can be applied to a propeller of a fixed wing aircraft, a windmill, or the like.

１０，１０ｅ ブレード
１４，１４ａ，１４ｂ，１４ｃ，１４ｄ 第１部材
１６，１６ａ，１６ｂ，１６ｃ，１６ｄ 第２部材
１８，２０，３２，３２ｃ 貫通孔
２８，２８ａ，２８ｂ，２８ｃ，２８ｄ 係止部
３４，４８，４８ａ，４８ｂ，４８ｃ，４８ｄ，５０ 前縁部
３６ 第１部分
３８ 第２部分
４４ 突出部
４６，４６ａ，４６ｂ，４６ｃ 引掛部
２３，５２ａ，５２ｂ，５４ｄ 凹部
１００ マルチコプタ
２００ ボート
３００ 送風機
Ｘ 回転軸線
Ｙ 回転方向
Ｚ 回転軸線に対する径方向 10, 10e Blade 14, 14a, 14b, 14c, 14d First member 16, 16a, 16b, 16c, 16d Second member 18, 20, 32, 32c Through hole 28, 28a, 28b, 28c, 28d Locking portion 34 , 48, 48a, 48b, 48c, 48d, 50 Front edge portion 36 First portion 38 Second portion 44 Projection portion 46, 46a, 46b, 46c Hook portion 23, 52a, 52b, 54d Recessed portion 100 Multicopter 200 Boat 300 Blower X Rotation axis Y Rotation direction Z Radial direction to the rotation axis

Claims (12)

回転軸線周りに回転されるブレードであって、
前記回転軸線に対して径方向に延びる第１部材と、
回転方向における前記第１部材の前縁部のうち少なくとも前記径方向の外端部に設けられかつ少なくとも一部が前記第１部材の前記前縁部よりも前方に位置するように設けられる第２部材とを備え、
前記第１部材は、前記第２部材を係止する係止部を含み、
前記係止部は、前記径方向において前記第２部材よりも外方に位置する第１部分を有する、ブレード。 A blade that rotates about a rotation axis,
A first member extending in a radial direction with respect to the rotation axis;
A second portion provided at least at the outer end portion in the radial direction of the front edge portion of the first member in the rotation direction and at least a part thereof being positioned forward of the front edge portion of the first member. With members,
The first member includes a locking portion for locking the second member,
The said latching | locking part is a braid | blade which has a 1st part located outside the said 2nd member in the said radial direction. 前記第１部材は前記第２部材よりも曲げ弾性率が高く、前記第２部材は前記第１部材よりも衝撃値が高い、請求項１に記載のブレード。   The blade according to claim 1, wherein the first member has a higher flexural modulus than the second member, and the second member has a higher impact value than the first member. 前記係止部は、前記回転軸線方向において前記第２部材と重なる第２部分をさらに有する、請求項１または２に記載のブレード。   The blade according to claim 1, wherein the locking portion further includes a second portion that overlaps the second member in the rotation axis direction. 前記第２部材は、前記回転軸線方向において前記第２部分を挟むように設けられる、請求項３に記載のブレード。   The blade according to claim 3, wherein the second member is provided so as to sandwich the second portion in the rotation axis direction. 前記第２部材は、前記径方向における前記第１部材の一端部から他端部まで設けられる、請求項１から４のいずれかに記載のブレード。   The blade according to any one of claims 1 to 4, wherein the second member is provided from one end to the other end of the first member in the radial direction. 前記係止部は、前記回転軸線方向において前記第１部材を貫通する貫通孔を有し、前記貫通孔の内周面によって前記第２部材を係止する、請求項１から５のいずれかに記載のブレード。   The said latching | locking part has a through-hole which penetrates the said 1st member in the said rotating shaft direction, and latches the said 2nd member with the internal peripheral surface of the said through-hole. The blade described. 前記係止部は、前記第１部材の前記前縁部から前記回転方向の後方に凹む凹部を有し、前記凹部の内面によって前記第２部材を係止する、請求項１から５のいずれかに記載のブレード。   The said latching | locking part has a recessed part dented from the said front edge part of the said 1st member to the back of the said rotation direction, and latches the said 2nd member by the inner surface of the said recessed part. The blade described in. 前記回転方向における前記第１部材の前縁から前記第２部材の前縁までの寸法は、前記径方向の内側よりも外側の方が大きい、請求項１から７のいずれかに記載のブレード。   The blade according to any one of claims 1 to 7, wherein a dimension from a front edge of the first member to a front edge of the second member in the rotation direction is larger on the outer side than on the inner side in the radial direction. 請求項１から８のいずれかに記載のブレードを備える、機器。   A device comprising the blade according to claim 1. 当該機器は航空機である、請求項９に記載の機器。   The device according to claim 9, wherein the device is an aircraft. 当該機器はボートである、請求項９に記載の機器。   The device according to claim 9, wherein the device is a boat. 当該機器は送風機である、請求項９に記載の機器。   The device according to claim 9, wherein the device is a blower.
JP2018062177A 2018-03-28 2018-03-28 Blade and device including the same Pending JP2019172051A (en)

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Citations (8)

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US5782607A (en) * 1996-12-11 1998-07-21 United Technologies Corporation Replaceable ceramic blade insert
US20040184921A1 (en) * 2003-02-22 2004-09-23 Karl Schreiber Compressor blade for an aircraft engine
CN102060103A (en) * 2010-12-29 2011-05-18 张东升 Wood propeller and manufacturing method thereof
WO2012008452A1 (en) * 2010-07-15 2012-01-19 株式会社Ihi Fan rotor blade and fan
JP2012523334A (en) * 2009-04-14 2012-10-04 グミヴェルク クライブルク ゲゼルシャフト ミット ベシュレンクテル ハフツング ウント コンパニー コマンディートゲゼルシャフト COMPOSITE MATERIAL COMPRISING HEAT POLYMERIZATION RESIN AND ELASTOMER
US20130068888A1 (en) * 2009-10-07 2013-03-21 Donald Smith Airfoil structure
JP2015067274A (en) * 2013-09-26 2015-04-13 ジーイー・アビエイション・システムズ・リミテッドＧｅ Ａｖｉａｔｉｏｎ Ｓｙｓｔｅｍｓ Ｌｉｍｉｔｅｄ Propeller blade assembly

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4728262A (en) * 1986-01-22 1988-03-01 Textron Inc. Erosion resistant propellers
US5782607A (en) * 1996-12-11 1998-07-21 United Technologies Corporation Replaceable ceramic blade insert
US20040184921A1 (en) * 2003-02-22 2004-09-23 Karl Schreiber Compressor blade for an aircraft engine
JP2012523334A (en) * 2009-04-14 2012-10-04 グミヴェルク クライブルク ゲゼルシャフト ミット ベシュレンクテル ハフツング ウント コンパニー コマンディートゲゼルシャフト COMPOSITE MATERIAL COMPRISING HEAT POLYMERIZATION RESIN AND ELASTOMER
US20130068888A1 (en) * 2009-10-07 2013-03-21 Donald Smith Airfoil structure
WO2012008452A1 (en) * 2010-07-15 2012-01-19 株式会社Ihi Fan rotor blade and fan
CN102060103A (en) * 2010-12-29 2011-05-18 张东升 Wood propeller and manufacturing method thereof
JP2015067274A (en) * 2013-09-26 2015-04-13 ジーイー・アビエイション・システムズ・リミテッドＧｅ Ａｖｉａｔｉｏｎ Ｓｙｓｔｅｍｓ Ｌｉｍｉｔｅｄ Propeller blade assembly

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