WO2017056751A1 - Blade member for wind power generation - Google Patents

Blade member for wind power generation Download PDF

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Publication number
WO2017056751A1
WO2017056751A1 PCT/JP2016/073661 JP2016073661W WO2017056751A1 WO 2017056751 A1 WO2017056751 A1 WO 2017056751A1 JP 2016073661 W JP2016073661 W JP 2016073661W WO 2017056751 A1 WO2017056751 A1 WO 2017056751A1
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WO
WIPO (PCT)
Prior art keywords
blade
members
surface portion
divided
fitted
Prior art date
Application number
PCT/JP2016/073661
Other languages
French (fr)
Japanese (ja)
Inventor
一馬 竹内
和之 川合
Original Assignee
株式会社Ｌｉｘｉｌ
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 株式会社Ｌｉｘｉｌ filed Critical 株式会社Ｌｉｘｉｌ
Publication of WO2017056751A1 publication Critical patent/WO2017056751A1/en
Priority to PH12018550028A priority Critical patent/PH12018550028A1/en

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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F03—MACHINES OR ENGINES FOR LIQUIDS; WIND, SPRING, OR WEIGHT MOTORS; PRODUCING MECHANICAL POWER OR A REACTIVE PROPULSIVE THRUST, NOT OTHERWISE PROVIDED FOR
    • F03D—WIND MOTORS
    • F03D3/00—Wind motors with rotation axis substantially perpendicular to the air flow entering the rotor 
    • F03D3/06—Rotors
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F03—MACHINES OR ENGINES FOR LIQUIDS; WIND, SPRING, OR WEIGHT MOTORS; PRODUCING MECHANICAL POWER OR A REACTIVE PROPULSIVE THRUST, NOT OTHERWISE PROVIDED FOR
    • F03D—WIND MOTORS
    • F03D80/00—Details, components or accessories not provided for in groups F03D1/00 - F03D17/00
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E10/00—Energy generation through renewable energy sources
    • Y02E10/70—Wind energy
    • Y02E10/74—Wind turbines with rotation axis perpendicular to the wind direction

Definitions

  • the present invention relates to a blade member for wind power generation.
  • Patent Document 1 discloses a vertical axis wind turbine for wind power generation.
  • This windmill has a basic structure in which a plurality of blades are provided at predetermined angles around a rotation axis, and each blade is arranged in parallel with the rotation axis.
  • the front part 11 of the blade is constituted by a hollow part 12 and a split part 61 provided separately from the hollow part 12.
  • the dividing portion 61 is connected by connecting means 63 having a fitting structure.
  • the connecting means 63 disclosed in FIG. 7 of Patent Document 1 includes the connecting member 7 disposed over the blade thickness direction at the end of the hollow portion 12 and the blade thickness direction at the end of the divided portion 61.
  • the rear connecting member 62 arranged in this manner has a fitting structure that makes contact with the entire blade thickness direction.
  • a portion necessary for the fitting is increased in size, and there is a concern that the weight of the blade is increased.
  • the connecting member 7 and the rear connecting member 62 when the connecting member 7 and the rear connecting member 62 are fitted, it is necessary to slide and assemble them while bringing both members into contact in a wide range. There is a problem that a large frictional force is easily applied. In particular, the longer the blade length, the greater the frictional force at the time of assembly, and the greater the frictional force, the more difficult the assembly operation becomes and the more easily harmful effects occur.
  • the present invention has been made in view of the above-described circumstances, and a blade member can be configured by connecting a plurality of divided members with a fitting structure, and the fitting portion can be reduced in size and easily fitted.
  • the problem to be solved is to provide a blade member for wind power generation that can be realized.
  • the present invention is connected to a rotating member that rotates about a rotating shaft in a predetermined direction, and is disposed at a position away from the rotating shaft in a radial direction intersecting the rotating shaft, along the direction of the rotating shaft.
  • An extended wing member for wind power generation A plurality of divided members arranged at each position in the chord direction are provided, and a plurality of the divided members are connected to each other.
  • the split member is provided with a blade surface portion which is a portion constituting the surface portion of the blade member,
  • the plurality of divided members have a structure in which end portions of the blade surface portions provided on both members adjacent to each other in the chord direction are fitted by elastic deformation.
  • the fitting portion can be reduced in size.
  • the contact area of the fitting portion can be kept small and the end portions of the blade surface portion can be fitted to each other by elastic deformation, the fitting operation can be facilitated.
  • the “rotation axis” means a virtual rotation center position, and the shaft member serving as the rotation center may or may not exist at the position of the rotation axis. .
  • FIG. 1 is a perspective view schematically illustrating a wind power generator provided with a wing member according to a first embodiment.
  • A) is sectional drawing of the wing
  • B) is sectional drawing of each member which divided
  • A) is an enlarged view showing an enlarged cross section near the connecting portion that connects the first divided member and the second divided member, and
  • A) is sectional drawing of the wing
  • (B) is sectional drawing of each member which divided
  • the blade surface portion of the split member may include an exposed surface portion that is exposed to the outside of the wing member, and a fitting structure portion that protrudes or extends to the inner side of the wing member with respect to the exposed surface portion.
  • the members adjacent in the chord direction in the plurality of divided members have a structure in which the exposed surface portions are arranged adjacent to each other and the fitting structure portions are fitted to each other on the inner side of the exposed surface portions. May be.
  • the exposed surface portions exposed to the outside are arranged adjacent to each other, and the fitting structure portions that protrude or extend to the inner side are fitted with each other. It is not necessary to provide a complicated fitting structure in the vicinity of the surface (exposed surface) of the wing member. Therefore, the level difference can be reduced on the surface (exposed surface) of the wing member, and the air flow in the vicinity of the surface can be made smooth.
  • the split member may have blade surface portions disposed on both sides in the blade thickness direction.
  • rib-shaped connecting wall portions that connect the blade surface portions on both sides may be formed.
  • the members adjacent in the chord direction in the plurality of divided members may have a structure in which the end of the blade surface portion of one member is fitted to the end of the blade surface portion of the other member from the outside.
  • the connection wall part may be connected with the blade
  • the end portions are coupled to each other with a fitting structure that is advantageous in terms of simplicity and workability, in which the blade surface portion of the other divided member is fitted from the outside into the blade surface portion of the one divided member. be able to.
  • the connecting wall portion is connected to the blade surface portion fitted from the outside, the blade surface portion fitted from the outside can be prevented from spreading outward in the blade thickness direction, and the fitting state is more reliably maintained. It becomes easy to be done.
  • the dividing member may be an extruded material of a metal material. If the wing member is made of an extrusion molding material made of a metal material, a light and strong structure can be realized. However, forming a large wing member integrally requires a very large molding device. There is a problem that it is difficult for some reason. If the wing member is composed of a plurality of divided members as in the present invention and the molding object is made small in size, it can be easily constructed as an extrusion molding material of a metal material, and this problem can be easily solved. And if the fitting structure mentioned above is used, since the miniaturization of a fitting part and the facilitation of a fitting operation
  • a vertical axis type windmill 1 shown in FIG. 1 includes a frame 3, rotating members 5 ⁇ / b> A and 5 ⁇ / b> B, and a plurality of blade members 10.
  • the frame 3 is a portion that is mounted and fixed at a place where the vertical axis wind turbine 1 is installed.
  • four shaft members 3A, 3B, 3C, 3D are arranged substantially in parallel in the frame 3.
  • the axial direction of these shaft members 3A, 3B, 3C, 3D is the vertical direction. It is installed in the form.
  • the vicinity of the upper ends of the shaft members 3A, 3B, 3C, 3D is connected to the upper frame portion 3E, and the vicinity of the lower ends of the shaft members 3A, 3B, 3C, 3D is connected to the lower frame portion 3F.
  • Rotating body 2 having a structure in which a pair of upper and lower rotating members 5A and 5B and a plurality of wing members 10 extending in the vertical direction are integrally connected is rotatably held in frame 3.
  • plate-like rotating members 5 ⁇ / b> A are respectively connected to upper ends of the plurality of wing members 10 configured in a longitudinal shape
  • plate-like rotating members 5 ⁇ / b> B are respectively connected to lower end portions of the plurality of wing members 10. It is connected.
  • the rotating body 2 is configured to be long in the vertical direction, and a rotating member 5A constituting the upper end portion is rotatably held by the upper frame portion 3E of the frame 3.
  • a rotating member 5 ⁇ / b> B constituting the lower end portion of the rotating body 2 is rotatably held by the lower frame portion 3 ⁇ / b> F of the frame 3.
  • the rotating body 2 configured as described above has a structure that rotates around a rotation axis C in a predetermined direction while being held by the frame 3.
  • the rotation axis C is a virtual axis that becomes the rotation center of the rotating body 2, and in FIG. 1, the position of the rotation axis C is virtually indicated by a one-dot chain line.
  • the direction of the rotation axis C of the rotating body 2 is defined as the vertical direction
  • the direction passing through the rotation axis C and orthogonal to the rotation axis C (rotational radius direction) is defined as the radial direction.
  • a straight line L passing through the front and rear ends of the wing member 10 and perpendicular to the vertical direction is a chord
  • the direction parallel to the straight line L is The chord direction.
  • the chord direction is the front-rear direction
  • the advancing side of the wing member 10 is the front side
  • the opposite side is the rear side.
  • the direction perpendicular to the vertical direction and the chord direction is the blade thickness direction. This blade thickness direction is the left-right direction.
  • FIG. 2A shows a cut surface obtained by cutting the wing member 10 in a plane direction orthogonal to the up-down direction, and the longitudinal direction at the cut surface is the chord direction, and a short direction orthogonal to this direction.
  • the hand direction is the wing thickness direction.
  • the rotating members 5A and 5B forming a part of the rotating body 2 are both formed in a plate shape, and both are supported by the frame 3 in an arrangement in which the plate thickness direction is the vertical direction.
  • the rotating member 5A includes a rotation center portion 61A disposed in the vicinity of the rotation axis C, and three arm portions 62A, 63A, and 64A extending from the rotation center portion 61A in different rotation radius directions.
  • the rotating member 5B includes a rotation center portion 61B disposed in the vicinity of the rotation axis C, and three arm portions 62B, 63B, and 64B extending from the rotation center portion 61B in different rotation radial directions.
  • the rotation center portion 61A and the rotation center portion 61B are disposed to face each other in the vertical direction, and each of the arm portions 62A, 63A, and 64A extends substantially parallel to each of the arm portions 62B, 63B, and 64B.
  • blade member 10A is connected among several wing
  • blade member is between the front-end
  • 10B is connected, and the third wing member 10C is connected between the distal ends of the arm portions 64A and 64B.
  • the wing member 10 forming a part of the rotating body 2 corresponds to an example of a “wing member for wind power generation”.
  • the wing member 10 is connected to the rotating members 5A and 5B that rotate about the rotation axis C, and is disposed at a position away from the rotation axis C in the radial direction intersecting the rotation axis C.
  • the direction of the rotation axis C It extends along.
  • the first wing member 10A, the second wing member 10B, and the third wing member 10C have the same shape, and all have the structure shown in FIGS. .
  • the wing member 10 includes a plurality of divided members 12 disposed at respective positions in the chord direction, and the plurality of divided members 12 are connected to each other.
  • the wing member 10 is configured by three divided members 12 (a first divided member 30, a second divided member 40, and a third divided member 50) having a shape as shown in FIG.
  • the dividing member 12 is also made of an extruded material of a metal material (for example, aluminum).
  • a blade surface portion 14 that is a portion constituting the surface portion 11 of the blade member 10 is provided on both sides in the blade thickness direction.
  • the blade surface portions 14 are respectively disposed on both sides in the blade thickness direction of the first divided member 30 disposed on the front end side of the plurality of divided members 12.
  • the blade surface portion 14 of the first divided member 30 includes a blade surface portion 31 on the outer side (opposite to the rotation axis C in the blade thickness direction) and a blade surface portion 32 on the inner side (on the rotation axis C side in the blade thickness direction). These front end portions are continuously connected. Further, a rib-like connecting wall portion 38 that connects the outer blade surface portion 31 and the inner blade surface portion 32 is provided at a position near these rear end portions. As shown in FIG.
  • the vicinity of the rear end portion of the outer blade surface portion 31 is an extension portion 33 extending in a cantilevered manner from the connection wall portion 38 to the rear side.
  • the protruding portion 33 has a structure that can be elastically deformed.
  • an extended portion 34 that cantilevered from the connecting wall portion 38 to the rear side, and the extended portion 34 can be elastically deformed. It has become.
  • the blade surface portions 14 are respectively disposed on both sides in the blade thickness direction also in the second divided member 40 disposed in the center among the plurality of divided members 12.
  • the blade surface portion 14 of the second divided member 40 includes a blade surface portion 41 on the outer side (opposite to the rotation axis C in the blade thickness direction) and a blade surface portion 42 on the inner side (on the rotation axis C side in the blade thickness direction). It consists of.
  • a rib-like connecting wall portion 48 for connecting the outer blade surface portion 41 and the inner blade surface portion 42 is provided at a position near the front end portion.
  • a rib-like connecting wall portion 49 is provided to connect the blade surface portion 41 and the inner blade surface portion 42 to each other. As shown in FIG.
  • the vicinity of the front end portion of the outer blade surface portion 41 is an extended portion 45 that cantilevered from the connecting wall portion 48 to the front side.
  • the protruding portion 45 has a structure that can be elastically deformed.
  • the vicinity of the front end portion of the inner blade surface portion 42 is an extended portion 46 that cantilevered from the connecting wall portion 48 to the front side, and this extended portion 46 is elastically deformed. It is a structure to obtain.
  • the vicinity of the rear end portion of the outer blade surface portion 41 is an extended portion 43 that cantilevered from the connecting wall portion 49 to the rear side.
  • the protruding portion 43 has a structure that can be elastically deformed.
  • the vicinity of the rear end of the inner blade surface portion 42 is an extended portion 44 that cantilevered from the connecting wall portion 49 to the rear side, and the extended portion 44 can be elastically deformed. It has become.
  • the blade surface portions 14 are also arranged on both sides in the blade thickness direction in the third divided member 50 arranged on the rear end side among the plurality of divided members 12.
  • the blade surface portion 14 of the third split member 50 includes a blade surface portion 51 on the outer side (opposite to the rotation axis C in the blade thickness direction) and a blade surface portion 52 on the inner side (on the rotation axis C side in the blade thickness direction). These rear end portions are connected to each other. At positions close to these front end portions, a rib-shaped connecting wall portion 58 that connects the outer blade surface portion 51 and the inner blade surface portion 52 is provided. As shown in FIG.
  • the vicinity of the front end portion of the outer blade surface portion 51 is an extended portion 55 that cantilevered from the connecting wall portion 58 to the front side.
  • the protruding portion 55 has a structure that can be elastically deformed.
  • the vicinity of the front end portion of the inner blade surface portion 52 is an extension portion 56 that cantilevered from the connection wall portion 58 to the front side, and the extension portion 56 can be elastically deformed. It has become.
  • the outer blade surface portion 31 of the first divided member 30 is exposed to the exposed surface portion 31 ⁇ / b> A exposed to the outside of the blade member 10, and extends to the inner side of the blade member 10 than the exposed surface portion 31 ⁇ / b> A.
  • a fitting structure 31B is provided.
  • the fitting structure portion 31B includes a concave portion 37A that extends from the rear end portion of the exposed surface portion 31A to the inner side and the rear side in the blade thickness direction and is recessed inward in the blade thickness direction from the position of the inner wall surface 33A of the extension portion 33. Yes.
  • the inner wing surface portion 32 is provided with an exposed surface portion 32A exposed to the outside of the wing member 10 and a fitting structure portion 32B extending to the inside of the wing member 10 with respect to the exposed surface portion 32A.
  • the fitting structure portion 32B includes a concave portion 37B that extends from the rear end portion of the exposed surface portion 32A to the inner side and the rear side in the blade thickness direction and is recessed inward in the blade thickness direction from the position of the inner wall surface 34A of the extension portion 34. Yes.
  • the outer blade surface portion 41 of the second divided member 40 has an exposed surface portion 41A exposed to the outside of the blade member 10, and protrudes more inside the blade member 10 than the exposed surface portion 41A.
  • extending fitting structures 41B and 41C are provided.
  • the fitting structure portion 41C protrudes inward in the blade thickness direction from the front end portion of the exposed surface portion 41A, and protrudes inward in the blade thickness direction from the inner wall surface 45A of the extension portion 45. ing.
  • FIG. 3A the fitting structure portion 41C protrudes inward in the blade thickness direction from the front end portion of the exposed surface portion 41A, and protrudes inward in the blade thickness direction from the inner wall surface 45A of the extension portion 45.
  • the fitting structure portion 41B extends from the rear end portion of the exposed surface portion 31A to the inner side and the rear side in the blade thickness direction, and the blade thickness is larger than the position of the inner wall surface 43A of the extension portion 43.
  • a recess 47A that is recessed inward is provided.
  • the inner blade surface portion 42 has an exposed surface portion 42A exposed to the outside of the blade member 10 and a fitting structure portion 42B that protrudes or extends to the inner side of the blade member 10 with respect to the exposed surface portion 42A. , 42C.
  • the fitting structure portion 42C protrudes inward in the blade thickness direction from the front end portion of the exposed surface portion 42A, and protrudes inward in the blade thickness direction from the inner wall surface 46A of the extension portion 46. ing.
  • FIG. 3A the fitting structure portion 42C protrudes inward in the blade thickness direction from the front end portion of the exposed surface portion 42A, and protrudes inward in the blade thickness direction from the inner wall surface 46A of the extension portion 46.
  • the fitting structure portion 42B extends from the rear end portion of the exposed surface portion 42A to the inner side and the rear side in the blade thickness direction, and the blade thickness is larger than the position of the inner wall surface 44A of the extension portion 44.
  • a recess 47B that is recessed inward is provided.
  • the outer blade surface portion 51 of the third divided member 50 is exposed to the exposed surface portion 51A that is exposed to the outside of the blade member 10 and protrudes to the inner side of the blade member 10 from the exposed surface portion 51A.
  • 51C of fitting structure parts to perform are provided.
  • the fitting structure portion 51C protrudes inward in the blade thickness direction from the front end portion of the exposed surface portion 51A, and protrudes inward in the blade thickness direction from the inner wall surface 55A of the extension portion 55.
  • the inner wing surface portion 52 is provided with an exposed surface portion 52A exposed to the outside of the wing member 10 and a fitting structure portion 52C that protrudes to the inner side of the wing member 10 with respect to the exposed surface portion 52A.
  • the fitting structure portion 52C protrudes inward in the blade thickness direction from the front end portion of the exposed surface portion 52A, and protrudes inward in the blade thickness direction from the inner wall surface 56A of the extension portion 56.
  • the plurality of divided members 12 configured as described above have a structure in which the ends of the blade surface portions 14 provided on both members adjacent in the chord direction are fitted by elastic deformation.
  • the first split member 30 and the second split member 40 that are adjacent in the chord direction have the exposed surface portions 31A and 41A (FIG. 3A) adjacent to each other.
  • the fitting structures 31B and 41C are arranged on the inner side of the exposed surfaces 31A and 41A.
  • the fitting structure portion 41C having a protruding structure can be fitted into the recessed portion 37A formed in the fitting structure portion 31B having an extended structure (see FIG. 2A).
  • the extending portion 33 has a structure in which not only the vicinity of the recessed portion 37A but also the entire portion extending from the connecting wall portion 38 can be elastically deformed.
  • the extending portion 45 has a structure in which not only the vicinity of the fitting structure portion 41C but also the entire portion extending from the connecting wall portion 48 can be elastically deformed.
  • the exposed surface portions 32A and 42A are arranged adjacent to each other, and the fitting structure portions 32B and 42C (FIG. 3A) are located inside the exposed surface portions 32A and 42A. It is designed to fit on the side.
  • the extending part 34 extending in a cantilever form from the connecting wall part 38 is elastically deformed, and the extending part 46 extending in a cantilever form from the connecting wall part 48 is elastically deformed.
  • the fitting structure portion 42C having a protruding structure can be fitted into the recess 37B formed in the fitting structure portion 32B having an extended structure (see FIG. 2A).
  • the extending portion 34 has a structure in which not only the vicinity of the recessed portion 37B but also the entire portion extending from the connecting wall portion 38 can be elastically deformed.
  • the extending portion 46 also has a structure in which not only the vicinity of the fitting structure portion 42C but also the entire portion extending from the connecting wall portion 48 can be elastically deformed.
  • the end portion of the blade surface portion 14 of the other member is fitted from the outside to the end portion of the blade surface portion 14 of one member (first divided member 30). It has a structure.
  • the connection wall part 48 is connected to the position near the fitting structure parts 41C and 42C in the blade surface part 14 of the second divided member 40 fitted from the outside, and the size increase in the blade thickness direction in this vicinity is suppressed.
  • the connecting wall portion 38 is connected to a position near the fitting structure portions 31B and 32B, and the size reduction in the blade thickness direction in this vicinity is suppressed. ing.
  • the second divided member 40 and the third divided member 50 that are adjacent in the chord direction are arranged such that the exposed surface portions 41A and 51A (FIG. 3B) are adjacent to each other and are fitted to each other.
  • the combined structures 41B and 51C are fitted on the inner side of the exposed surface portions 41A and 51A.
  • the extending portion 43 extending from the connecting wall portion 49 has a structure that can be elastically deformed as a whole, and the extending portion 55 extending from the connecting wall portion 58 can also be elastically deformed as a whole. ing.
  • the fitting structure part 51C of a protrusion structure is inserted in the recessed part 47A formed in the fitting structure part 41B of the extension structure by elastic deformation of the extension parts 43 and 55.
  • the exposed surface portions 42A and 52A are arranged adjacent to each other, and the fitting structure portions 42B and 52C (FIG. 3B) are located inside the exposed surface portions 42A and 52A.
  • the extending portion 44 extending from the connecting wall portion 49 has a structure that can be elastically deformed as a whole, and the extending portion 56 extending from the connecting wall portion 58 can also be elastically deformed as a whole. ing.
  • the fitting structure part 52C of a protrusion structure is inserted in the recessed part 47B formed in the fitting structure part 42B of the extension structure by elastic deformation of the extension parts 44 and 56.
  • the end portion of the blade surface portion 14 of the other member (third divided member 50) is fitted from the outside to the end portion of the blade surface portion 14 of one member (second divided member 40). It has a structure.
  • the connection wall part 58 is connected to the position near the fitting structure parts 51C and 52C in the blade surface part 14 of the third divided member 50 fitted from the outside, and the size increase in the blade thickness direction in this vicinity is suppressed.
  • the connecting wall portion 49 is connected to a position near the fitting structure portions 41B and 42B, and the size reduction in the blade thickness direction in this vicinity is suppressed. ing.
  • the fitting portion can be reduced in size. Moreover, since the contact area of the fitting portion can be kept small and the end portions of the blade surface portion 14 can be fitted together by elastic deformation, the fitting operation can be facilitated.
  • Patent Document 1 since the structure of Patent Document 1 needs to be slid against a frictional force, a strong force must be applied by using a resin hammer or the like at the time of assembly, and unintended deformation occurs at that time. There is also a problem that is likely to occur. In contrast, in this configuration, these problems are less likely to occur.
  • the blade surface portion 14 of the split member 12 includes an exposed surface portion exposed to the outside of the blade member 10 and an extending portion extending to the inside of the blade member 10 with respect to the exposed surface portion. ing. And the member which adjoins in the chord direction in the some division member 12 becomes a structure where mutual exposed surface parts are arrange
  • the exposed surface portions exposed to the outside are arranged adjacent to each other, and the fitting structure portions protruding or extending to the inner side are fitted with each other.
  • the level difference can be reduced on the surface (exposed surface) of the wing member, and the air flow in the vicinity of the surface can be made smooth.
  • the split member 12 has blade surface portions 14 disposed on both sides in the blade thickness direction, and rib-shaped connection walls that connect the blade surface portions 14 on both sides are formed. According to this configuration, since the split member 12 provided with the connecting member can prevent the blade member from spreading in the blade thickness direction, the blade member 10 can be effectively deformed due to the split member 12 spreading in the blade thickness direction. Can be suppressed.
  • the members adjacent in the chord direction in the plurality of divided members 12 have a structure in which the end of the blade surface portion 14 of one member is fitted to the end of the blade surface portion 14 of the other member from the outside. ing. And the connection wall part is connected with the wing
  • the end portion has a simple and advantageous fitting structure in which the blade surface portion 14 of the other divided member 12 is fitted from the outside into the blade surface portion 14 of the one divided member 12. They can be linked together.
  • the connecting wall portion is connected to the blade surface portion 14 fitted from the outside, the blade surface portion 14 fitted from the outside can be prevented from spreading outward in the blade thickness direction, and the fitting state is more reliable. To be easily maintained.
  • the dividing member 12 is made of an extruded material of a metal material. If the wing member 10 is made of an extrusion molding material made of a metal material, a light and strong structure can be realized. However, forming the large wing member 10 integrally requires a very large molding apparatus. Therefore, there is a problem that it is difficult. On the other hand, if the wing member 10 is constituted by a plurality of divided members 12 as in the present configuration, they can be easily constituted by an extruded material of a metal material, and this problem can be easily solved. And if the fitting structure mentioned above is used, since the size of a fitting part and the simplification of a fitting operation
  • Example 2 will be described with reference to FIG.
  • the wing member 210 of the second embodiment is different from the first embodiment only in that a reinforcing portion is added, and is the same as the first embodiment except for the reinforcing portion. Therefore, the same structure as that of the first embodiment is denoted by the same reference numeral as that of the first embodiment, and detailed description thereof is omitted.
  • the blade member 210 of the second embodiment is the same as the blade member 10 of the first embodiment in the structure of the blade surface portion in each divided member and the fitting structure in the blade surface portion. Further, the blade member 210 of the second embodiment can be used in the vertical axis wind turbine 1 shown in FIG. 1 instead of the blade member 10 of the first embodiment.
  • the three wing members 210 are provided on the rotating members 5A and 5B that rotate about the rotation axis C. Will be linked. These three wing members 210 are arranged at positions away from the rotation axis C in the radial direction intersecting with the rotation axis C, and extend along the direction of the rotation axis C. In this wing member 210, the vertical direction, the chord direction, and the wing thickness direction are the same as those of the wing member 10 of the first embodiment.
  • the blade member 210 shown in FIG. 4A also includes a plurality of divided members 212 (a first divided member 230, a second divided member 240, and a third divided member 250) that are arranged at respective positions in the chord direction ( (See FIG. 4B).
  • the plurality of divided members 212 are connected by a connection structure similar to that of the wing member 10 of the first embodiment. Specifically, the end portions of the blade surface portions 14 provided on both members adjacent to each other in the chord direction among the plurality of divided members 212 are fitted to each other, and the ends of the fitted portions are fitted. At least one of them is elastically deformed.
  • rectangular tube-shaped holes 232, 242, and 252 extending in the vertical direction are formed in the divided members 230, 240, and 250, respectively.
  • the hole 232 is formed to be connected to the connecting wall portions 238 and 239 extending in the blade thickness direction
  • the hole 242 is connected to the connecting wall portions 248 and 249 extended in the blade thickness direction. It is formed in a connected form.
  • the hole part 252 is formed in the form connected with the connection wall part 258,259 extended over the blade thickness direction.
  • reinforcing members 260 for increasing the strength of the wing member 210 are embedded in the holes 232, 242, and 252, respectively.
  • the embedded reinforcing material 260 is conceptually indicated by a two-dot chain line.
  • the reinforcing material 260 may be, for example, a metal material such as iron, stainless steel, or aluminum, and may be a non-metallic material such as plastic, FRP (Fiber-Reinforced Plastics), or ABS (Acrylonitrile Butadiene Stylene). It may be.
  • These reinforcing members 260 are arranged, for example, from the upper end portion to the lower end portion of the wing member 210, and are arranged, for example, in a form fixed to the rotating member 5A and the rotating member 5B.
  • the structure which fixes the reinforcing material 260 to the rotating member 5A and the rotating member 5B may be a fitting by unevenness, or may be a fixing structure using a connecting member such as a screw or a rivet.
  • the present invention is not limited to the first embodiment described with reference to the above description and drawings.
  • the following embodiments are also included in the technical scope of the present invention.
  • the vertical axis wind turbine 1 provided with the three blade members 10 is illustrated, but the number of blade members may be two or four or more.
  • the wing member is formed of aluminum or an aluminum alloy, but may be formed of other metal materials.
  • the configuration of the generator is omitted in the first and second embodiments, various known generators can be used as long as the configuration can convert the rotation of the rotating body 2 into electric power.
  • the blade member of Examples 1 and 2 has a substantially symmetrical shape when the blade thickness direction is the left-right direction, the blade member may have an asymmetrical shape.
  • the example in which the reinforcing material is arranged over the entire vertical direction of the wing member is shown, but the reinforcing material may be arranged only in a part of the vertical direction of the wing member.
  • the example in which the reinforcing material is embedded in the rectangular tube-shaped hole portion is shown.
  • the hole portion in which the reinforcing material is embedded is not limited to the rectangular tube-shaped hole portion. It may be a hole of the shape.
  • the reinforcing material is embedded near the center position in the blade thickness direction.
  • the position in which the reinforcing material is embedded may be a position closer to the inner side than the blade thickness direction. Also good. Or the reinforcing material may be arrange
  • the configuration in which the shaft member serving as the rotation center does not exist at the position of the rotation axis C is illustrated, but the shaft member serving as the rotation center exists at the position of the rotation axis C. Also good.

Abstract

A blade member for wind power generation is provided which makes it possible to configure a blade member by linking multiple divided members by means of a fitting structure and which makes it possible to make the fitting part smaller and to simplify the fitting operation. A blade member (10) is provided with multiple divided members (12) arranged in various positions in a chord direction, and said multiple divided members (12) are linked together. A blade surface part (14) is provided on each of the divided members (12), and these blade surface parts constitute the surface parts (11) of the blade member (10). The divided members (12) are structured such that the ends of the blade surface parts (14) provided on each of two members adjacent to each other in the blade chord direction are fitted together, and are structured such that at least one of said ends that fit together deforms elastically.

Description

風力発電用の翼部材Wings for wind power generation
　本発明は、風力発電用の翼部材に関するものである。 The present invention relates to a blade member for wind power generation.
　特許文献１には、垂直軸型の風力発電用風車が開示されている。この風車は、回転軸を中心として所定角度ごとに複数のブレード（ｂｌａｄｅ）が設けられており、各ブレードが、回転軸と平行に配置された基本構造となっている。更に、この文献の図７の例では、ブレードの前部１１が、中空部１２と、この中空部１２とは別体に設けられた分割部６１とによって構成されており、これら中空部１２と分割部６１とが嵌合構造の連結手段６３によって連結されている。 Patent Document 1 discloses a vertical axis wind turbine for wind power generation. This windmill has a basic structure in which a plurality of blades are provided at predetermined angles around a rotation axis, and each blade is arranged in parallel with the rotation axis. Furthermore, in the example of FIG. 7 of this document, the front part 11 of the blade is constituted by a hollow part 12 and a split part 61 provided separately from the hollow part 12. The dividing portion 61 is connected by connecting means 63 having a fitting structure.
特許第５５０６０３３号公報Japanese Patent No. 5,506,033
　しかし、特許文献１の図７で開示される連結手段６３は、中空部１２の端部において翼厚方向に亘って配置された連結材７と、分割部６１の端部において翼厚方向に亘って配置された後連結材６２とが、翼厚方向全体で接触し合う嵌合構造となっている。このように翼厚方向に亘る２つの連結材を重ねて配置する嵌合構造では、嵌合に必要となる部分が大型化してしまい、翼の重量を増大させる懸念がある。更に、特許文献１の図７の嵌合構造は、連結材７と後連結材６２とを嵌合させる際に両部材を広い範囲で接触させながらスライドさせて組み付ける必要があり、このスライド動作時に大きな摩擦力が加わりやすいという問題がある。特に、翼長が長くなるほど、組み付け時の摩擦力は大きくなり、摩擦力が大きくなるほど組付け作業の困難化を招き、弊害が生じやすくなる。 However, the connecting means 63 disclosed in FIG. 7 of Patent Document 1 includes the connecting member 7 disposed over the blade thickness direction at the end of the hollow portion 12 and the blade thickness direction at the end of the divided portion 61. The rear connecting member 62 arranged in this manner has a fitting structure that makes contact with the entire blade thickness direction. As described above, in the fitting structure in which the two connecting members extending in the blade thickness direction are overlapped, a portion necessary for the fitting is increased in size, and there is a concern that the weight of the blade is increased. Furthermore, in the fitting structure of FIG. 7 of Patent Document 1, when the connecting member 7 and the rear connecting member 62 are fitted, it is necessary to slide and assemble them while bringing both members into contact in a wide range. There is a problem that a large frictional force is easily applied. In particular, the longer the blade length, the greater the frictional force at the time of assembly, and the greater the frictional force, the more difficult the assembly operation becomes and the more easily harmful effects occur.
　本発明は、上述した実情に鑑みてなされたものであり、複数の分割部材を嵌合構造で連結させて翼部材を構成することができ、且つ嵌合部分の小型化及び嵌合作業の容易化を実現し得る風力発電用の翼部材を提供することを解決すべき課題としている。 The present invention has been made in view of the above-described circumstances, and a blade member can be configured by connecting a plurality of divided members with a fitting structure, and the fitting portion can be reduced in size and easily fitted. The problem to be solved is to provide a blade member for wind power generation that can be realized.
　本発明は、所定方向の回転軸を中心として回転する回転部材に連結されるとともに、前記回転軸と交差する放射方向において前記回転軸から離れた位置に配置され、前記回転軸の方向に沿って延びる風力発電用の翼部材であって、
　翼弦方向の各位置にそれぞれ配置される複数の分割部材を備えるとともに、複数の前記分割部材が連結された構成をなし、
　前記分割部材には、当該翼部材の表面部を構成する部分である翼表面部が設けられ、
　複数の前記分割部材は、前記翼弦方向で隣接し合う両部材にそれぞれ設けられた前記翼表面部の端部同士が弾性変形によって嵌合する構造である。 The present invention is connected to a rotating member that rotates about a rotating shaft in a predetermined direction, and is disposed at a position away from the rotating shaft in a radial direction intersecting the rotating shaft, along the direction of the rotating shaft. An extended wing member for wind power generation,
A plurality of divided members arranged at each position in the chord direction are provided, and a plurality of the divided members are connected to each other.
The split member is provided with a blade surface portion which is a portion constituting the surface portion of the blade member,
The plurality of divided members have a structure in which end portions of the blade surface portions provided on both members adjacent to each other in the chord direction are fitted by elastic deformation.
　本発明に係る翼部材は、翼表面部の端部同士が嵌合する構造で複数の分割部材が連結されるため、嵌合部分の小型化が図られる。しかも、嵌合部分の接触面積が小さく抑えられ且つ弾性変形によって翼表面部の端部同士を嵌合させ得る構成であるため、嵌合作業の容易化が図られる。なお、本発明でいう「回転軸」は、仮想的な回転中心位置を意味し、回転軸の位置に回転中心となる軸部材が実体として存在していてもよく、存在していなくてもよい。 Since the blade member according to the present invention has a structure in which the end portions of the blade surface portions are fitted to each other and a plurality of divided members are connected, the fitting portion can be reduced in size. In addition, since the contact area of the fitting portion can be kept small and the end portions of the blade surface portion can be fitted to each other by elastic deformation, the fitting operation can be facilitated. In the present invention, the “rotation axis” means a virtual rotation center position, and the shaft member serving as the rotation center may or may not exist at the position of the rotation axis. .
実施例１の翼部材を備えた風力発電装置を概略的に例示する斜視図である。BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a perspective view schematically illustrating a wind power generator provided with a wing member according to a first embodiment. （Ａ）は、実施例１の翼部材の断面図であり、（Ｂ）は、その翼部材を複数の分割部材に分割した各部材の断面図である。(A) is sectional drawing of the wing | blade member of Example 1, (B) is sectional drawing of each member which divided | segmented the wing | blade member into several division member. （Ａ）は、第１の分割部材と第２の分割部材を連結する連結部付近の断面を拡大して示す拡大図であり、（Ｂ）は、第２の分割部材と第３の分割部材を連結する連結部付近の断面を拡大して示す拡大図である。(A) is an enlarged view showing an enlarged cross section near the connecting portion that connects the first divided member and the second divided member, and (B) is a second divided member and a third divided member. It is an enlarged view which expands and shows the cross section of the connection part vicinity which connects. （Ａ）は、実施例２の翼部材の断面図であり、（Ｂ）は、その翼部材を複数の分割部材に分割した各部材の断面図である。(A) is sectional drawing of the wing | blade member of Example 2, (B) is sectional drawing of each member which divided | segmented the wing | blade member into several division member.
　本発明における好ましい実施の形態を説明する。
　分割部材の翼表面部は、翼部材の外側に露出する露出面部と、露出面部よりも翼部材の内部側に突出又は延出する嵌合構造部とを備えていてもよい。そして、複数の分割部材において翼弦方向で隣接する部材は、互いの露出面部同士が隣接して配置され且つ互いの嵌合構造部同士がそれら露出面部よりも内部側で嵌合する構造であってもよい。 A preferred embodiment of the present invention will be described.
The blade surface portion of the split member may include an exposed surface portion that is exposed to the outside of the wing member, and a fitting structure portion that protrudes or extends to the inner side of the wing member with respect to the exposed surface portion. The members adjacent in the chord direction in the plurality of divided members have a structure in which the exposed surface portions are arranged adjacent to each other and the fitting structure portions are fitted to each other on the inner side of the exposed surface portions. May be.
　このように、翼弦方向で隣接し合う分割部材において、外部に露出する露出面部同士を隣接させて配置し、内部側に突出又は延出する嵌合構造部同士を嵌合させる構造とすれば、翼部材の表面（露出面）付近に複雑な嵌合構造を広く設けずに済む。よって、翼部材の表面（露出面）において、段差を少なくすることができ、表面付近の空気の流れをスムーズにすることができる。 In this way, in the divided members that are adjacent in the chord direction, the exposed surface portions exposed to the outside are arranged adjacent to each other, and the fitting structure portions that protrude or extend to the inner side are fitted with each other. It is not necessary to provide a complicated fitting structure in the vicinity of the surface (exposed surface) of the wing member. Therefore, the level difference can be reduced on the surface (exposed surface) of the wing member, and the air flow in the vicinity of the surface can be made smooth.
　分割部材は、翼厚方向の両側に翼表面部がそれぞれ配置されていてもよい。そして、少なくともいずれかの分割部材において、両側の翼表面部を連結するリブ（ｒｉｂ）状の連結壁部が形成されていてもよい。 The split member may have blade surface portions disposed on both sides in the blade thickness direction. In at least one of the divided members, rib-shaped connecting wall portions that connect the blade surface portions on both sides may be formed.
　この構成によれば、連結部材が設けられた分割部材において翼厚方向の広がりを防ぐことができるため、分割部材が翼厚方向に広がることに起因する翼部材の変形を効果的に抑えることができる。 According to this configuration, since the spread in the blade thickness direction can be prevented in the divided member provided with the connecting member, it is possible to effectively suppress the deformation of the blade member caused by the spread of the divided member in the blade thickness direction. it can.
　複数の分割部材において翼弦方向で隣接する部材は、一方の部材における翼表面部の端部に、他方の部材における翼表面部の端部が外側から嵌め合わされる構造であってもよい。そして、少なくとも外側から嵌め合わされる翼表面部に連結壁部が連結されていてもよい。 The members adjacent in the chord direction in the plurality of divided members may have a structure in which the end of the blade surface portion of one member is fitted to the end of the blade surface portion of the other member from the outside. And the connection wall part may be connected with the blade | wing surface part fitted from the outer side at least.
　この構成によれば、一方の分割部材の翼表面部に、他方の分割部材の翼表面部を外側から嵌め込むという簡易で且つ作業性の面で有利な嵌合構造で端部同士を連結することができる。しかも、外側から嵌め込まれる翼表面部に連結壁部が連結されるため、外側から嵌め込まれる翼表面部が翼厚方向外側に広がってしまうことを防ぐことができ、嵌合状態がより確実に維持されやすくなる。 According to this configuration, the end portions are coupled to each other with a fitting structure that is advantageous in terms of simplicity and workability, in which the blade surface portion of the other divided member is fitted from the outside into the blade surface portion of the one divided member. be able to. Moreover, since the connecting wall portion is connected to the blade surface portion fitted from the outside, the blade surface portion fitted from the outside can be prevented from spreading outward in the blade thickness direction, and the fitting state is more reliably maintained. It becomes easy to be done.
　本発明において、分割部材は、金属材料の押出成形材であってもよい。
　翼部材を金属材料の押出成形材によって構成すれば、軽量で強度のある構造を実現し得るが、大きな翼部材を一体的に形成することは、非常に大型の成形装置が必要となる等の理由により難しいという問題がある。本発明のように翼部材を複数の分割部材によって構成し、成形対象を小サイズにすれば、金属材料の押出成形材として構成しやすいため、この問題を解消しやすくなる。そして、上述した嵌合構造を用いれば、嵌合部分の小型化及び嵌合作業の容易化を実現し得るため、分割構造に起因するデメリットを抑えることができる。 In the present invention, the dividing member may be an extruded material of a metal material.
If the wing member is made of an extrusion molding material made of a metal material, a light and strong structure can be realized. However, forming a large wing member integrally requires a very large molding device. There is a problem that it is difficult for some reason. If the wing member is composed of a plurality of divided members as in the present invention and the molding object is made small in size, it can be easily constructed as an extrusion molding material of a metal material, and this problem can be easily solved. And if the fitting structure mentioned above is used, since the miniaturization of a fitting part and the facilitation of a fitting operation | work can be implement | achieved, the demerit resulting from a division structure can be suppressed.
　＜実施例１＞
　次に、本発明を具体化した実施例１について、図面を参照しつつ説明する。
　図１で示す垂直軸型風車１は、フレーム（ｆｒａｍｅ）３と、回転部材５Ａ，５Ｂと、複数の翼部材１０とを備えている。 <Example 1>
Next, a first embodiment of the present invention will be described with reference to the drawings.
A vertical axis type windmill 1 shown in FIG. 1 includes a frame 3, rotating members 5 </ b> A and 5 </ b> B, and a plurality of blade members 10.
　フレーム３は、垂直軸型風車１の設置場所に載置されて固定される部分である。図１の例では、フレーム３において４本の軸部材３Ａ，３Ｂ，３Ｃ，３Ｄが略平行に配置されており、例えばこれらの軸部材３Ａ，３Ｂ，３Ｃ，３Ｄの軸方向を鉛直方向とする形で設置されている。軸部材３Ａ，３Ｂ，３Ｃ，３Ｄの上端部付近は上枠部３Ｅにそれぞれ連結されており、軸部材３Ａ，３Ｂ，３Ｃ，３Ｄの下端部付近は下枠部３Ｆにそれぞれ連結されている。 The frame 3 is a portion that is mounted and fixed at a place where the vertical axis wind turbine 1 is installed. In the example of FIG. 1, four shaft members 3A, 3B, 3C, 3D are arranged substantially in parallel in the frame 3. For example, the axial direction of these shaft members 3A, 3B, 3C, 3D is the vertical direction. It is installed in the form. The vicinity of the upper ends of the shaft members 3A, 3B, 3C, 3D is connected to the upper frame portion 3E, and the vicinity of the lower ends of the shaft members 3A, 3B, 3C, 3D is connected to the lower frame portion 3F.
　フレーム３には、上下一対の回転部材５Ａ，５Ｂと上下方向に延びる複数の翼部材１０を一体的に連結した構成の回転体２が回転可能に保持されている。回転体２は、長手状に構成される複数の翼部材１０の各上端部に板状の回転部材５Ａがそれぞれ連結され、複数の翼部材１０の各下端部に板状の回転部材５Ｂがそれぞれ連結されている。この回転体２は、上下に長く構成されており、上端部を構成する回転部材５Ａがフレーム３の上枠部３Ｅに回転可能に保持されている。また、回転体２の下端部を構成する回転部材５Ｂがフレーム３の下枠部３Ｆに回転可能に保持されている。このように構成される回転体２は、フレーム３に保持されつつ所定方向の回転軸Ｃを中心として回転する構造となっている。なお、回転軸Ｃは、回転体２の回転中心となる仮想的な軸線であり、図１では、回転軸Ｃの位置を一点鎖線にて仮想的に示している。 Rotating body 2 having a structure in which a pair of upper and lower rotating members 5A and 5B and a plurality of wing members 10 extending in the vertical direction are integrally connected is rotatably held in frame 3. In the rotator 2, plate-like rotating members 5 </ b> A are respectively connected to upper ends of the plurality of wing members 10 configured in a longitudinal shape, and plate-like rotating members 5 </ b> B are respectively connected to lower end portions of the plurality of wing members 10. It is connected. The rotating body 2 is configured to be long in the vertical direction, and a rotating member 5A constituting the upper end portion is rotatably held by the upper frame portion 3E of the frame 3. In addition, a rotating member 5 </ b> B constituting the lower end portion of the rotating body 2 is rotatably held by the lower frame portion 3 </ b> F of the frame 3. The rotating body 2 configured as described above has a structure that rotates around a rotation axis C in a predetermined direction while being held by the frame 3. The rotation axis C is a virtual axis that becomes the rotation center of the rotating body 2, and in FIG. 1, the position of the rotation axis C is virtually indicated by a one-dot chain line.
　以下の説明では、回転体２の回転軸Ｃの方向を上下方向とし、回転軸Ｃを通りこの回転軸Ｃと直交する方向（回転半径方向）を放射方向とする。更に、図２（Ａ）のように、翼部材１０の進行方向前端部と後端部とを通り且つ上下方向と直交する方向の直線Ｌが翼弦であり、この直線Ｌと平行な方向が翼弦方向である。この翼弦方向を前後方向とし、翼部材１０の進行側を前方、それとは反対側を後方とする。更に、上下方向及び翼弦方向と直交する方向が翼厚方向である。この翼厚方向を左右方向とする。図２（Ａ）は、翼部材１０を上下方向と直交する平面方向に切断した切断面を示しており、この切断面での長手方向が翼弦方向となっており、この方向と直交する短手方向が翼厚方向となっている。 In the following description, the direction of the rotation axis C of the rotating body 2 is defined as the vertical direction, and the direction passing through the rotation axis C and orthogonal to the rotation axis C (rotational radius direction) is defined as the radial direction. Further, as shown in FIG. 2 (A), a straight line L passing through the front and rear ends of the wing member 10 and perpendicular to the vertical direction is a chord, and the direction parallel to the straight line L is The chord direction. The chord direction is the front-rear direction, the advancing side of the wing member 10 is the front side, and the opposite side is the rear side. Further, the direction perpendicular to the vertical direction and the chord direction is the blade thickness direction. This blade thickness direction is the left-right direction. FIG. 2A shows a cut surface obtained by cutting the wing member 10 in a plane direction orthogonal to the up-down direction, and the longitudinal direction at the cut surface is the chord direction, and a short direction orthogonal to this direction. The hand direction is the wing thickness direction.
　図１のように、回転体２の一部をなす回転部材５Ａ，５Ｂはいずれも板状に構成されており、いずれも板厚方向を上下方向とする配置でフレーム３に支持されている。回転部材５Ａは、回転軸Ｃの付近に配置される回転中心部６１Ａと、この回転中心部６１Ａからそれぞれ異なる回転半径方向に延びる３つのアーム（ａｒｍ）部６２Ａ，６３Ａ，６４Ａとを備えている。また、回転部材５Ｂは、回転軸Ｃの付近に配置される回転中心部６１Ｂと、この回転中心部６１Ｂからそれぞれ異なる回転半径方向に延びる３つのアーム部６２Ｂ，６３Ｂ，６４Ｂとを備えている。回転中心部６１Ａと回転中心部６１Ｂは上下に向かい合って配置されており、アーム部６２Ａ，６３Ａ，６４Ａの各々は、アーム部６２Ｂ，６３Ｂ，６４Ｂの各々と略平行に延びている。そして、アーム部６２Ａ，６２Ｂの先端部の間には、複数の翼部材１０のうち第１の翼部材１０Ａが連結されており、アーム部６３Ａ，６３Ｂの先端部の間に第２の翼部材１０Ｂが連結されており、アーム部６４Ａ，６４Ｂの先端部の間に第３の翼部材１０Ｃが連結されている。 As shown in FIG. 1, the rotating members 5A and 5B forming a part of the rotating body 2 are both formed in a plate shape, and both are supported by the frame 3 in an arrangement in which the plate thickness direction is the vertical direction. The rotating member 5A includes a rotation center portion 61A disposed in the vicinity of the rotation axis C, and three arm portions 62A, 63A, and 64A extending from the rotation center portion 61A in different rotation radius directions. . The rotating member 5B includes a rotation center portion 61B disposed in the vicinity of the rotation axis C, and three arm portions 62B, 63B, and 64B extending from the rotation center portion 61B in different rotation radial directions. The rotation center portion 61A and the rotation center portion 61B are disposed to face each other in the vertical direction, and each of the arm portions 62A, 63A, and 64A extends substantially parallel to each of the arm portions 62B, 63B, and 64B. And between the front-end | tip parts of arm part 62A, 62B, 1st wing | blade member 10A is connected among several wing | blade members 10, and 2nd wing | blade member is between the front-end | tip parts of arm part 63A, 63B. 10B is connected, and the third wing member 10C is connected between the distal ends of the arm portions 64A and 64B.
　回転体２の一部をなす翼部材１０は、「風力発電用の翼部材」の一例に相当するものである。この翼部材１０は、回転軸Ｃを中心として回転する回転部材５Ａ，５Ｂに連結されるとともに、回転軸Ｃと交差する放射方向において回転軸Ｃから離れた位置に配置され、回転軸Ｃの方向に沿って延びている。本構成では、第１の翼部材１０Ａと、第２の翼部材１０Ｂと、第３の翼部材１０Ｃとが同一の形状となっており、いずれも図２、図３で示す構造となっている。 The wing member 10 forming a part of the rotating body 2 corresponds to an example of a “wing member for wind power generation”. The wing member 10 is connected to the rotating members 5A and 5B that rotate about the rotation axis C, and is disposed at a position away from the rotation axis C in the radial direction intersecting the rotation axis C. The direction of the rotation axis C It extends along. In this configuration, the first wing member 10A, the second wing member 10B, and the third wing member 10C have the same shape, and all have the structure shown in FIGS. .
　図２（Ａ）のように、翼部材１０は、翼弦方向の各位置にそれぞれ配置される複数の分割部材１２を備えるとともに、これら複数の分割部材１２が連結された構成をなす。具体的には、図２（Ｂ）のような形状をなす３つの分割部材１２（第１分割部材３０、第２分割部材４０、第３分割部材５０）によって翼部材１０が構成され、いずれの分割部材１２も、金属材料（例えばアルミニウム（ａｌｕｍｉｎｉｕｍ））の押出成形材によって構成されている。また、いずれの分割部材１２も、翼部材１０の表面部１１を構成する部分である翼表面部１４が翼厚方向の両側に設けられている。 As shown in FIG. 2 (A), the wing member 10 includes a plurality of divided members 12 disposed at respective positions in the chord direction, and the plurality of divided members 12 are connected to each other. Specifically, the wing member 10 is configured by three divided members 12 (a first divided member 30, a second divided member 40, and a third divided member 50) having a shape as shown in FIG. The dividing member 12 is also made of an extruded material of a metal material (for example, aluminum). Further, in any divided member 12, a blade surface portion 14 that is a portion constituting the surface portion 11 of the blade member 10 is provided on both sides in the blade thickness direction.
　図２（Ａ）のように、複数の分割部材１２のうち前端部側に配置される第１分割部材３０には、翼厚方向の両側に翼表面部１４がそれぞれ配置されている。この第１分割部材３０の翼表面部１４は、外側（翼厚方向において回転軸Ｃとは反対側）の翼表面部３１と内側（翼厚方向において回転軸Ｃの側）の翼表面部３２とからなり、これらの前端部側が連続的に連結されている。そして、これらの後端部寄りの位置には、外側の翼表面部３１と内側の翼表面部３２とを連結するリブ状の連結壁部３８が設けられている。図３（Ａ）のように、外側の翼表面部３１における後方側の端部付近は、連結壁部３８から後方側に片持ち状に延出する延出部３３となっており、この延出部３３は弾性変形し得る構造となっている。内側の翼表面部３２における後方側の端部付近は、連結壁部３８から後方側に片持ち状に延出する延出部３４となっており、この延出部３４が弾性変形し得る構造となっている。 As shown in FIG. 2A, the blade surface portions 14 are respectively disposed on both sides in the blade thickness direction of the first divided member 30 disposed on the front end side of the plurality of divided members 12. The blade surface portion 14 of the first divided member 30 includes a blade surface portion 31 on the outer side (opposite to the rotation axis C in the blade thickness direction) and a blade surface portion 32 on the inner side (on the rotation axis C side in the blade thickness direction). These front end portions are continuously connected. Further, a rib-like connecting wall portion 38 that connects the outer blade surface portion 31 and the inner blade surface portion 32 is provided at a position near these rear end portions. As shown in FIG. 3A, the vicinity of the rear end portion of the outer blade surface portion 31 is an extension portion 33 extending in a cantilevered manner from the connection wall portion 38 to the rear side. The protruding portion 33 has a structure that can be elastically deformed. Near the rear end of the inner blade surface portion 32 is an extended portion 34 that cantilevered from the connecting wall portion 38 to the rear side, and the extended portion 34 can be elastically deformed. It has become.
　図２のように、複数の分割部材１２のうち中央に配置される第２分割部材４０にも、翼厚方向の両側に翼表面部１４がそれぞれ配置されている。この第２分割部材４０の翼表面部１４は、外側（翼厚方向において回転軸Ｃとは反対側）の翼表面部４１と内側（翼厚方向において回転軸Ｃの側）の翼表面部４２とからなる。これらの前端部寄りの位置には、外側の翼表面部４１と内側の翼表面部４２とを連結するリブ状の連結壁部４８が設けられ、これらの後端部寄りの位置には、外側の翼表面部４１と内側の翼表面部４２とを連結するリブ状の連結壁部４９が設けられている。図３（Ａ）のように、外側の翼表面部４１における前方側の端部付近は、連結壁部４８から前方側に片持ち状に延出する延出部４５となっており、この延出部４５が弾性変形し得る構造となっている。また、内側の翼表面部４２における前方側の端部付近は、連結壁部４８から前方側に片持ち状に延出する延出部４６となっており、この延出部４６が弾性変形し得る構造となっている。図３（Ｂ）のように、外側の翼表面部４１における後方側の端部付近は、連結壁部４９から後方側に片持ち状に延出する延出部４３となっており、この延出部４３が弾性変形し得る構造となっている。内側の翼表面部４２における後方側の端部付近は、連結壁部４９から後方側に片持ち状に延出する延出部４４となっており、この延出部４４が弾性変形し得る構造となっている。 As shown in FIG. 2, the blade surface portions 14 are respectively disposed on both sides in the blade thickness direction also in the second divided member 40 disposed in the center among the plurality of divided members 12. The blade surface portion 14 of the second divided member 40 includes a blade surface portion 41 on the outer side (opposite to the rotation axis C in the blade thickness direction) and a blade surface portion 42 on the inner side (on the rotation axis C side in the blade thickness direction). It consists of. A rib-like connecting wall portion 48 for connecting the outer blade surface portion 41 and the inner blade surface portion 42 is provided at a position near the front end portion. A rib-like connecting wall portion 49 is provided to connect the blade surface portion 41 and the inner blade surface portion 42 to each other. As shown in FIG. 3A, the vicinity of the front end portion of the outer blade surface portion 41 is an extended portion 45 that cantilevered from the connecting wall portion 48 to the front side. The protruding portion 45 has a structure that can be elastically deformed. Further, the vicinity of the front end portion of the inner blade surface portion 42 is an extended portion 46 that cantilevered from the connecting wall portion 48 to the front side, and this extended portion 46 is elastically deformed. It is a structure to obtain. As shown in FIG. 3B, the vicinity of the rear end portion of the outer blade surface portion 41 is an extended portion 43 that cantilevered from the connecting wall portion 49 to the rear side. The protruding portion 43 has a structure that can be elastically deformed. The vicinity of the rear end of the inner blade surface portion 42 is an extended portion 44 that cantilevered from the connecting wall portion 49 to the rear side, and the extended portion 44 can be elastically deformed. It has become.
　図２のように、複数の分割部材１２のうち後端部側に配置される第３分割部材５０にも、翼厚方向の両側に翼表面部１４がそれぞれ配置されている。この第３分割部材５０の翼表面部１４は、外側（翼厚方向において回転軸Ｃとは反対側）の翼表面部５１と内側（翼厚方向において回転軸Ｃの側）の翼表面部５２とからなり、これらの後端部側が連結されている。そして、これらの前端部寄りの位置には、外側の翼表面部５１と内側の翼表面部５２とを連結するリブ状の連結壁部５８が設けられている。図３（Ｂ）のように、外側の翼表面部５１における前方側の端部付近は、連結壁部５８から前方側に片持ち状に延出する延出部５５となっており、この延出部５５が弾性変形し得る構造となっている。内側の翼表面部５２における前方側の端部付近は、連結壁部５８から前方側に片持ち状に延出する延出部５６となっており、この延出部５６が弾性変形し得る構造となっている。 As shown in FIG. 2, the blade surface portions 14 are also arranged on both sides in the blade thickness direction in the third divided member 50 arranged on the rear end side among the plurality of divided members 12. The blade surface portion 14 of the third split member 50 includes a blade surface portion 51 on the outer side (opposite to the rotation axis C in the blade thickness direction) and a blade surface portion 52 on the inner side (on the rotation axis C side in the blade thickness direction). These rear end portions are connected to each other. At positions close to these front end portions, a rib-shaped connecting wall portion 58 that connects the outer blade surface portion 51 and the inner blade surface portion 52 is provided. As shown in FIG. 3B, the vicinity of the front end portion of the outer blade surface portion 51 is an extended portion 55 that cantilevered from the connecting wall portion 58 to the front side. The protruding portion 55 has a structure that can be elastically deformed. The vicinity of the front end portion of the inner blade surface portion 52 is an extension portion 56 that cantilevered from the connection wall portion 58 to the front side, and the extension portion 56 can be elastically deformed. It has become.
　図３（Ａ）のように、第１分割部材３０において外側の翼表面部３１には、翼部材１０の外側に露出する露出面部３１Ａと、露出面部３１Ａよりも翼部材１０の内部側に延びる嵌合構造部３１Ｂとが設けられている。嵌合構造部３１Ｂは、露出面部３１Ａの後端部から翼厚方向内側且つ後方側に延びており、延出部３３の内壁面３３Ａの位置よりも翼厚方向内側に凹む凹部３７Ａを備えている。また、内側の翼表面部３２には、翼部材１０の外側に露出する露出面部３２Ａと、露出面部３２Ａよりも翼部材１０の内部側に延びる嵌合構造部３２Ｂとが設けられている。嵌合構造部３２Ｂは、露出面部３２Ａの後端部から翼厚方向内側且つ後方側に延びており、延出部３４の内壁面３４Ａの位置よりも翼厚方向内側に凹む凹部３７Ｂを備えている。 As shown in FIG. 3A, the outer blade surface portion 31 of the first divided member 30 is exposed to the exposed surface portion 31 </ b> A exposed to the outside of the blade member 10, and extends to the inner side of the blade member 10 than the exposed surface portion 31 </ b> A. A fitting structure 31B is provided. The fitting structure portion 31B includes a concave portion 37A that extends from the rear end portion of the exposed surface portion 31A to the inner side and the rear side in the blade thickness direction and is recessed inward in the blade thickness direction from the position of the inner wall surface 33A of the extension portion 33. Yes. The inner wing surface portion 32 is provided with an exposed surface portion 32A exposed to the outside of the wing member 10 and a fitting structure portion 32B extending to the inside of the wing member 10 with respect to the exposed surface portion 32A. The fitting structure portion 32B includes a concave portion 37B that extends from the rear end portion of the exposed surface portion 32A to the inner side and the rear side in the blade thickness direction and is recessed inward in the blade thickness direction from the position of the inner wall surface 34A of the extension portion 34. Yes.
　図３（Ａ）のように、第２分割部材４０において外側の翼表面部４１には、翼部材１０の外側に露出する露出面部４１Ａと、露出面部４１Ａよりも翼部材１０の内部側に突出又は延出する嵌合構造部４１Ｂ，４１Ｃとが設けられている。図３（Ａ）のように、嵌合構造部４１Ｃは、露出面部４１Ａの前端部から翼厚方向内側に突出しており、延出部４５の内壁面４５Ａよりも翼厚方向内側に凸となっている。図３（Ｂ）のように、嵌合構造部４１Ｂは、露出面部３１Ａの後端部から翼厚方向内側且つ後方側に延びており、延出部４３の内壁面４３Ａの位置よりも翼厚方向内側に凹む凹部４７Ａを備えている。 As shown in FIG. 3A, the outer blade surface portion 41 of the second divided member 40 has an exposed surface portion 41A exposed to the outside of the blade member 10, and protrudes more inside the blade member 10 than the exposed surface portion 41A. Alternatively, extending fitting structures 41B and 41C are provided. As shown in FIG. 3A, the fitting structure portion 41C protrudes inward in the blade thickness direction from the front end portion of the exposed surface portion 41A, and protrudes inward in the blade thickness direction from the inner wall surface 45A of the extension portion 45. ing. As shown in FIG. 3B, the fitting structure portion 41B extends from the rear end portion of the exposed surface portion 31A to the inner side and the rear side in the blade thickness direction, and the blade thickness is larger than the position of the inner wall surface 43A of the extension portion 43. A recess 47A that is recessed inward is provided.
　第２分割部材４０において内側の翼表面部４２には、翼部材１０の外側に露出する露出面部４２Ａと、露出面部４２Ａよりも翼部材１０の内部側に突出又は延出する嵌合構造部４２Ｂ，４２Ｃとが設けられている。図３（Ａ）のように、嵌合構造部４２Ｃは、露出面部４２Ａの前端部から翼厚方向内側に突出しており、延出部４６の内壁面４６Ａよりも翼厚方向内側に凸となっている。図３（Ｂ）のように、嵌合構造部４２Ｂは、露出面部４２Ａの後端部から翼厚方向内側且つ後方側に延びており、延出部４４の内壁面４４Ａの位置よりも翼厚方向内側に凹む凹部４７Ｂを備えている。 In the second split member 40, the inner blade surface portion 42 has an exposed surface portion 42A exposed to the outside of the blade member 10 and a fitting structure portion 42B that protrudes or extends to the inner side of the blade member 10 with respect to the exposed surface portion 42A. , 42C. As shown in FIG. 3A, the fitting structure portion 42C protrudes inward in the blade thickness direction from the front end portion of the exposed surface portion 42A, and protrudes inward in the blade thickness direction from the inner wall surface 46A of the extension portion 46. ing. As shown in FIG. 3B, the fitting structure portion 42B extends from the rear end portion of the exposed surface portion 42A to the inner side and the rear side in the blade thickness direction, and the blade thickness is larger than the position of the inner wall surface 44A of the extension portion 44. A recess 47B that is recessed inward is provided.
　図３（Ｂ）のように、第３分割部材５０において外側の翼表面部５１には、翼部材１０の外側に露出する露出面部５１Ａと、露出面部５１Ａよりも翼部材１０の内部側に突出する嵌合構造部５１Ｃとが設けられている。嵌合構造部５１Ｃは、露出面部５１Ａの前端部から翼厚方向内側に突出しており、延出部５５の内壁面５５Ａよりも翼厚方向内側に凸となっている。内側の翼表面部５２には、翼部材１０の外側に露出する露出面部５２Ａと、露出面部５２Ａよりも当該翼部材１０の内部側に突出する嵌合構造部５２Ｃとが設けられている。嵌合構造部５２Ｃは、露出面部５２Ａの前端部から翼厚方向内側に突出しており、延出部５６の内壁面５６Ａよりも翼厚方向内側に凸となっている。 As shown in FIG. 3B, the outer blade surface portion 51 of the third divided member 50 is exposed to the exposed surface portion 51A that is exposed to the outside of the blade member 10 and protrudes to the inner side of the blade member 10 from the exposed surface portion 51A. 51C of fitting structure parts to perform are provided. The fitting structure portion 51C protrudes inward in the blade thickness direction from the front end portion of the exposed surface portion 51A, and protrudes inward in the blade thickness direction from the inner wall surface 55A of the extension portion 55. The inner wing surface portion 52 is provided with an exposed surface portion 52A exposed to the outside of the wing member 10 and a fitting structure portion 52C that protrudes to the inner side of the wing member 10 with respect to the exposed surface portion 52A. The fitting structure portion 52C protrudes inward in the blade thickness direction from the front end portion of the exposed surface portion 52A, and protrudes inward in the blade thickness direction from the inner wall surface 56A of the extension portion 56.
　このように構成される複数の分割部材１２は、翼弦方向で隣接し合う両部材にそれぞれ設けられた翼表面部１４の端部同士が弾性変形によって嵌合する構造となっている。 The plurality of divided members 12 configured as described above have a structure in which the ends of the blade surface portions 14 provided on both members adjacent in the chord direction are fitted by elastic deformation.
　具体的には、図２（Ａ）のように翼弦方向で隣接する第１分割部材３０と第２分割部材４０は、互いの露出面部３１Ａ，４１Ａ（図３（Ａ））が隣接して配置され且つ互いの嵌合構造部３１Ｂ，４１Ｃ（図３（Ａ））がそれら露出面部３１Ａ，４１Ａよりも内部側で嵌合するようになっている。これらを嵌合させる際には、連結壁部３８から片持ち状に延出する延出部３３を弾性変形させ、連結壁部４８から片持ち状に延出する延出部４５を弾性変形させることで、延出構造の嵌合構造部３１Ｂに形成された凹部３７Ａ内に突出構造の嵌合構造部４１Ｃを嵌め込むことができるようになっている（図２（Ａ）参照）。なお、延出部３３は、凹部３７Ａ付近だけでなく、連結壁部３８から延出する部分全体が弾性変形し得る構造となっている。延出部４５も、嵌合構造部４１Ｃ付近だけでなく、連結壁部４８から延出する部分全体が弾性変形し得る構造となっている。同様に、互いの露出面部３２Ａ，４２Ａ（図３（Ａ））が隣接して配置され且つ互いの嵌合構造部３２Ｂ，４２Ｃ（図３（Ａ））がそれら露出面部３２Ａ，４２Ａよりも内部側で嵌合するようになっている。これらを嵌合させる際には、連結壁部３８から片持ち状に延出する延出部３４を弾性変形させ、連結壁部４８から片持ち状に延出する延出部４６を弾性変形させることで延出構造の嵌合構造部３２Ｂに形成された凹部３７Ｂ内に突出構造の嵌合構造部４２Ｃを嵌め込むことができるようになっている（図２（Ａ）参照）。なお、延出部３４は、凹部３７Ｂ付近だけでなく、連結壁部３８から延出する部分全体が弾性変形し得る構造となっている。延出部４６も、嵌合構造部４２Ｃ付近だけでなく、連結壁部４８から延出する部分全体が弾性変形し得る構造となっている。より具体的には、一方の部材（第１分割部材３０）における翼表面部１４の端部に、他方の部材（第２分割部材４０）における翼表面部１４の端部が外側から嵌め合わされる構造となっている。そして、外側から嵌め合わされる第２分割部材４０の翼表面部１４において嵌合構造部４１Ｃ，４２Ｃ寄りの位置に連結壁部４８が連結され、この付近での翼厚方向のサイズ拡大を抑えている。また、内側から嵌め合わされる第１分割部材３０の翼表面部１４でも、嵌合構造部３１Ｂ，３２Ｂ寄りの位置に連結壁部３８が連結され、この付近での翼厚方向のサイズ縮小を抑えている。 Specifically, as shown in FIG. 2A, the first split member 30 and the second split member 40 that are adjacent in the chord direction have the exposed surface portions 31A and 41A (FIG. 3A) adjacent to each other. The fitting structures 31B and 41C (FIG. 3A) are arranged on the inner side of the exposed surfaces 31A and 41A. When these are fitted, the extending portion 33 extending in a cantilever shape from the connecting wall portion 38 is elastically deformed, and the extending portion 45 extending in a cantilever shape from the connecting wall portion 48 is elastically deformed. Accordingly, the fitting structure portion 41C having a protruding structure can be fitted into the recessed portion 37A formed in the fitting structure portion 31B having an extended structure (see FIG. 2A). The extending portion 33 has a structure in which not only the vicinity of the recessed portion 37A but also the entire portion extending from the connecting wall portion 38 can be elastically deformed. The extending portion 45 has a structure in which not only the vicinity of the fitting structure portion 41C but also the entire portion extending from the connecting wall portion 48 can be elastically deformed. Similarly, the exposed surface portions 32A and 42A (FIG. 3A) are arranged adjacent to each other, and the fitting structure portions 32B and 42C (FIG. 3A) are located inside the exposed surface portions 32A and 42A. It is designed to fit on the side. When these are fitted, the extending part 34 extending in a cantilever form from the connecting wall part 38 is elastically deformed, and the extending part 46 extending in a cantilever form from the connecting wall part 48 is elastically deformed. Thus, the fitting structure portion 42C having a protruding structure can be fitted into the recess 37B formed in the fitting structure portion 32B having an extended structure (see FIG. 2A). The extending portion 34 has a structure in which not only the vicinity of the recessed portion 37B but also the entire portion extending from the connecting wall portion 38 can be elastically deformed. The extending portion 46 also has a structure in which not only the vicinity of the fitting structure portion 42C but also the entire portion extending from the connecting wall portion 48 can be elastically deformed. More specifically, the end portion of the blade surface portion 14 of the other member (second divided member 40) is fitted from the outside to the end portion of the blade surface portion 14 of one member (first divided member 30). It has a structure. And the connection wall part 48 is connected to the position near the fitting structure parts 41C and 42C in the blade surface part 14 of the second divided member 40 fitted from the outside, and the size increase in the blade thickness direction in this vicinity is suppressed. Yes. Further, also on the blade surface portion 14 of the first divided member 30 fitted from the inside, the connecting wall portion 38 is connected to a position near the fitting structure portions 31B and 32B, and the size reduction in the blade thickness direction in this vicinity is suppressed. ing.
　図２（Ａ）のように翼弦方向で隣接する第２分割部材４０と第３分割部材５０は互いの露出面部４１Ａ，５１Ａ（図３（Ｂ））が隣接して配置され且つ互いの嵌合構造部４１Ｂ，５１Ｃ（図３（Ｂ））がそれら露出面部４１Ａ，５１Ａよりも内部側で嵌合する。具体的には、連結壁部４９から延びる延出部４３が全体的に弾性変形し得る構造となっており、連結壁部５８から延びる延出部５５も全体的に弾性変形し得る構造となっている。そして、これらを嵌合させる際には、延出部４３，５５の弾性変形により延出構造の嵌合構造部４１Ｂに形成された凹部４７Ａ内に突出構造の嵌合構造部５１Ｃを嵌め込むことができるようになっている（図２（Ａ）参照）。同様に、互いの露出面部４２Ａ，５２Ａ（図３（Ｂ））が隣接して配置され且つ互いの嵌合構造部４２Ｂ，５２Ｃ（図３（Ｂ））がそれら露出面部４２Ａ，５２Ａよりも内部側で嵌合する。具体的には、連結壁部４９から延びる延出部４４が全体的に弾性変形し得る構造となっており、連結壁部５８から延びる延出部５６も全体的に弾性変形し得る構造となっている。そして、これらを嵌合させる際には、延出部４４，５６の弾性変形により延出構造の嵌合構造部４２Ｂに形成された凹部４７Ｂ内に突出構造の嵌合構造部５２Ｃを嵌め込むことができるようになっている（図２（Ａ）参照）。より具体的には、一方の部材（第２分割部材４０）における翼表面部１４の端部に、他方の部材（第３分割部材５０）における翼表面部１４の端部が外側から嵌め合わされる構造となっている。そして、外側から嵌め合わされる第３分割部材５０の翼表面部１４において嵌合構造部５１Ｃ，５２Ｃ寄りの位置に連結壁部５８が連結され、この付近での翼厚方向のサイズ拡大を抑えている。また、内側から嵌め合わされる第２分割部材４０の翼表面部１４でも、嵌合構造部４１Ｂ，４２Ｂ寄りの位置に連結壁部４９が連結され、この付近での翼厚方向のサイズ縮小を抑えている。 As shown in FIG. 2A, the second divided member 40 and the third divided member 50 that are adjacent in the chord direction are arranged such that the exposed surface portions 41A and 51A (FIG. 3B) are adjacent to each other and are fitted to each other. The combined structures 41B and 51C (FIG. 3B) are fitted on the inner side of the exposed surface portions 41A and 51A. Specifically, the extending portion 43 extending from the connecting wall portion 49 has a structure that can be elastically deformed as a whole, and the extending portion 55 extending from the connecting wall portion 58 can also be elastically deformed as a whole. ing. And when fitting these, the fitting structure part 51C of a protrusion structure is inserted in the recessed part 47A formed in the fitting structure part 41B of the extension structure by elastic deformation of the extension parts 43 and 55. (See FIG. 2A). Similarly, the exposed surface portions 42A and 52A (FIG. 3B) are arranged adjacent to each other, and the fitting structure portions 42B and 52C (FIG. 3B) are located inside the exposed surface portions 42A and 52A. Mates on the side. Specifically, the extending portion 44 extending from the connecting wall portion 49 has a structure that can be elastically deformed as a whole, and the extending portion 56 extending from the connecting wall portion 58 can also be elastically deformed as a whole. ing. And when fitting these, the fitting structure part 52C of a protrusion structure is inserted in the recessed part 47B formed in the fitting structure part 42B of the extension structure by elastic deformation of the extension parts 44 and 56. (See FIG. 2A). More specifically, the end portion of the blade surface portion 14 of the other member (third divided member 50) is fitted from the outside to the end portion of the blade surface portion 14 of one member (second divided member 40). It has a structure. And the connection wall part 58 is connected to the position near the fitting structure parts 51C and 52C in the blade surface part 14 of the third divided member 50 fitted from the outside, and the size increase in the blade thickness direction in this vicinity is suppressed. Yes. Further, also on the blade surface portion 14 of the second divided member 40 fitted from the inside, the connecting wall portion 49 is connected to a position near the fitting structure portions 41B and 42B, and the size reduction in the blade thickness direction in this vicinity is suppressed. ing.
　以上のように、本構成の翼部材１０では、翼表面部１４の端部同士が嵌合する構造で複数の分割部材１２が連結されるため、嵌合部分の小型化が図られる。しかも、嵌合部分の接触面積が小さく抑えられ且つ弾性変形によって翼表面部１４の端部同士を嵌合させ得る構成であるため、嵌合作業の容易化が図られる。 As described above, in the wing member 10 of this configuration, since the plurality of divided members 12 are connected in a structure in which the end portions of the wing surface portion 14 are fitted to each other, the fitting portion can be reduced in size. Moreover, since the contact area of the fitting portion can be kept small and the end portions of the blade surface portion 14 can be fitted together by elastic deformation, the fitting operation can be facilitated.
　例えば、特許文献１の図７の嵌合構造は、連結材７と後連結材６２とを嵌合させる際に両部材を広い範囲で接触させながらスライドさせて組み付ける必要があり、このスライド動作時に大きな摩擦力が加わりやすいという問題がある。特に、翼長が長くなるほど、組み付け時の摩擦力は大きくなり、摩擦力が大きくなるほど組付け作業の困難化を招き、弊害が生じやすくなる。例えば、特許文献１の図７の構造は、摩擦面が広いため、組立時に注油が必要になり、残留した油によって嵌合が外れやすくなるという問題がある。また、特許文献１の構造は、摩擦力に抗してスライドさせる必要があるため、組立時に樹脂ハンマー（ｈａｍｍｅｒ）等を使用して強い力を与えなければならず、その際に意図しない変形が生じやすいという問題もある。これに対し、本構成では、これらの問題が生じにくくなる。 For example, in the fitting structure of FIG. 7 of Patent Document 1, it is necessary to slidably assemble the connecting member 7 and the rear connecting member 62 while bringing both members into contact with each other in a wide range. There is a problem that a large frictional force is easily applied. In particular, the longer the blade length, the greater the frictional force at the time of assembly, and the greater the frictional force, the more difficult the assembly operation becomes and the more easily harmful effects occur. For example, the structure shown in FIG. 7 of Patent Document 1 has a problem that since the friction surface is wide, lubrication is required at the time of assembling, and the remaining oil tends to come off. Further, since the structure of Patent Document 1 needs to be slid against a frictional force, a strong force must be applied by using a resin hammer or the like at the time of assembly, and unintended deformation occurs at that time. There is also a problem that is likely to occur. In contrast, in this configuration, these problems are less likely to occur.
　また、本構成の翼部材１０では、分割部材１２の翼表面部１４において、翼部材１０の外側に露出する露出面部と、露出面部よりも翼部材１０の内部側に延びる延出部とを備えている。そして、複数の分割部材１２において翼弦方向で隣接する部材は、互いの露出面部同士が隣接して配置され且つ互いの延出部同士がそれら露出面部よりも内部側で嵌合する構造となっている。 Further, in the blade member 10 of this configuration, the blade surface portion 14 of the split member 12 includes an exposed surface portion exposed to the outside of the blade member 10 and an extending portion extending to the inside of the blade member 10 with respect to the exposed surface portion. ing. And the member which adjoins in the chord direction in the some division member 12 becomes a structure where mutual exposed surface parts are arrange | positioned adjacently, and mutual extension parts fit inside those exposed surface parts. ing.
　このように、翼弦方向で隣接し合う分割部材１２において、外部に露出する露出面部同士を隣接させて配置し、内部側に突出又は延出する嵌合構造部同士を嵌合させる構造とすれば、翼部材の表面（露出面）付近に複雑な嵌合構造を広く設けずに済む。よって、翼部材の表面（露出面）において、段差を少なくすることができ、表面付近の空気の流れをスムーズにすることができる。 In this way, in the divided member 12 adjacent to each other in the chord direction, the exposed surface portions exposed to the outside are arranged adjacent to each other, and the fitting structure portions protruding or extending to the inner side are fitted with each other. For example, it is not necessary to provide a complicated fitting structure in the vicinity of the surface (exposed surface) of the wing member. Therefore, the level difference can be reduced on the surface (exposed surface) of the wing member, and the air flow in the vicinity of the surface can be made smooth.
　また、分割部材１２は、翼厚方向の両側に翼表面部１４がそれぞれ配置され、両側の翼表面部１４を連結するリブ状の連結壁部が形成されている。この構成によれば、連結部材が設けられた分割部材１２において翼厚方向の広がりを防ぐことができるため、分割部材１２が翼厚方向に広がることに起因する翼部材１０の変形を効果的に抑えることができる。 Also, the split member 12 has blade surface portions 14 disposed on both sides in the blade thickness direction, and rib-shaped connection walls that connect the blade surface portions 14 on both sides are formed. According to this configuration, since the split member 12 provided with the connecting member can prevent the blade member from spreading in the blade thickness direction, the blade member 10 can be effectively deformed due to the split member 12 spreading in the blade thickness direction. Can be suppressed.
　また、複数の分割部材１２において翼弦方向で隣接する部材は、一方の部材における翼表面部１４の端部に、他方の部材における翼表面部１４の端部が外側から嵌め合わされる構造となっている。そして、少なくとも外側から嵌め合わされる翼表面部１４に連結壁部が連結されている。この構成によれば、一方の分割部材１２の翼表面部１４に、他方の分割部材１２の翼表面部１４を外側から嵌め込むという簡易で且つ作業性の面で有利な嵌合構造で端部同士を連結することができる。しかも、外側から嵌め込まれる翼表面部１４に連結壁部が連結されるため、外側から嵌め込まれる翼表面部１４が翼厚方向外側に広がってしまうことを防ぐことができ、嵌合状態がより確実に維持されやすくなる。 Further, the members adjacent in the chord direction in the plurality of divided members 12 have a structure in which the end of the blade surface portion 14 of one member is fitted to the end of the blade surface portion 14 of the other member from the outside. ing. And the connection wall part is connected with the wing | blade surface part 14 fitted from the outer side at least. According to this configuration, the end portion has a simple and advantageous fitting structure in which the blade surface portion 14 of the other divided member 12 is fitted from the outside into the blade surface portion 14 of the one divided member 12. They can be linked together. Moreover, since the connecting wall portion is connected to the blade surface portion 14 fitted from the outside, the blade surface portion 14 fitted from the outside can be prevented from spreading outward in the blade thickness direction, and the fitting state is more reliable. To be easily maintained.
　また、分割部材１２は、金属材料の押出成形材によって構成されている。翼部材１０を金属材料の押出成形材によって構成すれば、軽量で強度のある構造を実現し得るが、大きな翼部材１０を一体的に形成することは、非常に大型の成形装置が必要となるため難しいという問題がある。これに対し、本構成のように翼部材１０を複数の分割部材１２によって構成すれば、それらを金属材料の押出成形材によって構成しやすくなり、この問題を解消しやすくなる。そして、上述した嵌合構造を用いれば、嵌合部分の小型化及び嵌合作業の容易化を実現し得るため、分割構造に起因するデメリットをできるだけ抑えることができる。 Further, the dividing member 12 is made of an extruded material of a metal material. If the wing member 10 is made of an extrusion molding material made of a metal material, a light and strong structure can be realized. However, forming the large wing member 10 integrally requires a very large molding apparatus. Therefore, there is a problem that it is difficult. On the other hand, if the wing member 10 is constituted by a plurality of divided members 12 as in the present configuration, they can be easily constituted by an extruded material of a metal material, and this problem can be easily solved. And if the fitting structure mentioned above is used, since the size of a fitting part and the simplification of a fitting operation | work can be implement | achieved, the demerit resulting from a division structure can be suppressed as much as possible.
　＜実施例２＞
　次に、実施例２について図４を参照して説明する。
　実施例２の翼部材２１０は、補強部を追加した点のみが実施例１と異なり、補強部以外は実施例１と同一である。よって、実施例１と同一の構造については、実施例１と同一の符号を付し、詳細な説明は省略する。実施例２の翼部材２１０は、各分割部材における翼表面部の構造や、翼表面部での嵌合構造は実施例１の翼部材１０と同様である。また、実施例２の翼部材２１０は、実施例１の翼部材１０に代えて図１で示す垂直軸型風車１にて用いることができる。 <Example 2>
Next, Example 2 will be described with reference to FIG.
The wing member 210 of the second embodiment is different from the first embodiment only in that a reinforcing portion is added, and is the same as the first embodiment except for the reinforcing portion. Therefore, the same structure as that of the first embodiment is denoted by the same reference numeral as that of the first embodiment, and detailed description thereof is omitted. The blade member 210 of the second embodiment is the same as the blade member 10 of the first embodiment in the structure of the blade surface portion in each divided member and the fitting structure in the blade surface portion. Further, the blade member 210 of the second embodiment can be used in the vertical axis wind turbine 1 shown in FIG. 1 instead of the blade member 10 of the first embodiment.
　図４（Ａ）で示す翼部材２１０を、翼部材１０に代えて図１の垂直軸型風車に適用した場合、回転軸Ｃを中心として回転する回転部材５Ａ，５Ｂに３つの翼部材２１０が連結されることになる。そして、これら３つの翼部材２１０は、回転軸Ｃと交差する放射方向において回転軸Ｃから離れた位置に配置され、回転軸Ｃの方向に沿って延びた構成をなす。なお、この翼部材２１０でも、上下方向、翼弦方向、翼厚方向は実施例１の翼部材１０と同様となる。 When the wing member 210 shown in FIG. 4A is applied to the vertical axis wind turbine of FIG. 1 instead of the wing member 10, the three wing members 210 are provided on the rotating members 5A and 5B that rotate about the rotation axis C. Will be linked. These three wing members 210 are arranged at positions away from the rotation axis C in the radial direction intersecting with the rotation axis C, and extend along the direction of the rotation axis C. In this wing member 210, the vertical direction, the chord direction, and the wing thickness direction are the same as those of the wing member 10 of the first embodiment.
　図４（Ａ）で示す翼部材２１０も、翼弦方向の各位置にそれぞれ配置される複数の分割部材２１２（第１分割部材２３０、第２分割部材２４０、第３分割部材２５０）を備える（図４（Ｂ）参照）。そして、これら複数の分割部材２１２が実施例１の翼部材１０と同様の連結構造で連結された構成をなす。具体的には、複数の分割部材２１２のうち翼弦方向で隣接し合う両部材にそれぞれ設けられた翼表面部１４の端部同士が嵌合する構造であり且つ嵌合するそれらの端部のうち少なくとも一方が弾性変形する構造となっている。 The blade member 210 shown in FIG. 4A also includes a plurality of divided members 212 (a first divided member 230, a second divided member 240, and a third divided member 250) that are arranged at respective positions in the chord direction ( (See FIG. 4B). The plurality of divided members 212 are connected by a connection structure similar to that of the wing member 10 of the first embodiment. Specifically, the end portions of the blade surface portions 14 provided on both members adjacent to each other in the chord direction among the plurality of divided members 212 are fitted to each other, and the ends of the fitted portions are fitted. At least one of them is elastically deformed.
　そして、図４（Ａ）で示す翼部材２１０において、各分割部材２３０，２４０，２５０の内部には、上下方向に延びる角筒状の孔部２３２，２４２，２５２が形成されている。孔部２３２は、翼厚方向に架け渡された連結壁部２３８，２３９に連結された形で形成されており、孔部２４２は、翼厚方向に架け渡された連結壁部２４８，２４９に連結された形で形成されている。更に、孔部２５２は、翼厚方向に架け渡された連結壁部２５８，２５９に連結された形で形成されている。そして、これら孔部２３２，２４２，２５２の内部には、翼部材２１０の強度を高めるための補強材２６０がそれぞれ埋め込まれている。なお、図４（Ａ）では、埋め込まれる補強材２６０を二点鎖線にて概念的に示している。補強材２６０は、例えば、鉄、ステンレス（ｓｔａｉｎｌｅｓｓ　ｓｔｅｅｌ）、アルミニウム等の金属材料であってもよく、プラスチック（ｐｌａｓｔｉｃｓ）、ＦＲＰ（Ｆｉｂｅｒ－Ｒｅｉｎｆｏｒｃｅｄ　Ｐｌａｓｔｉｃｓ）、ＡＢＳ（Ａｃｒｙｌｏｎｉｔｒｉｌｅ　Ｂｕｔａｄｉｅｎｅ　Ｓｔｙｒｅｎｅ）などの非金属材料であってもよい。これら補強材２６０は、例えば、翼部材２１０の上端部から下端部に亘って配置されており、例えば、回転部材５Ａと回転部材５Ｂに固定された形で配置されている。なお、補強材２６０を回転部材５Ａ及び回転部材５Ｂに固定する構造は、凹凸による嵌合であってもよく、ねじ、リベット（ｒｉｖｅｔ）等の連結部材を用いた固定構造であってもよい。 In the wing member 210 shown in FIG. 4 (A), rectangular tube-shaped holes 232, 242, and 252 extending in the vertical direction are formed in the divided members 230, 240, and 250, respectively. The hole 232 is formed to be connected to the connecting wall portions 238 and 239 extending in the blade thickness direction, and the hole 242 is connected to the connecting wall portions 248 and 249 extended in the blade thickness direction. It is formed in a connected form. Furthermore, the hole part 252 is formed in the form connected with the connection wall part 258,259 extended over the blade thickness direction. In addition, reinforcing members 260 for increasing the strength of the wing member 210 are embedded in the holes 232, 242, and 252, respectively. In FIG. 4A, the embedded reinforcing material 260 is conceptually indicated by a two-dot chain line. The reinforcing material 260 may be, for example, a metal material such as iron, stainless steel, or aluminum, and may be a non-metallic material such as plastic, FRP (Fiber-Reinforced Plastics), or ABS (Acrylonitrile Butadiene Stylene). It may be. These reinforcing members 260 are arranged, for example, from the upper end portion to the lower end portion of the wing member 210, and are arranged, for example, in a form fixed to the rotating member 5A and the rotating member 5B. In addition, the structure which fixes the reinforcing material 260 to the rotating member 5A and the rotating member 5B may be a fitting by unevenness, or may be a fixing structure using a connecting member such as a screw or a rivet.
　＜他の実施例＞
　本発明は上記記述及び図面によって説明した実施例１に限定されるものではなく、例えば次のような実施例も本発明の技術的範囲に含まれる。
（１）実施例１，２では、３つの翼部材１０が設けられた垂直軸型風車１を例示したが、翼部材の数は２つであってもよく、４以上であってもよい。
（２）実施例１，２では、翼部材をアルミニウム或いはアルミ合金（ａｌｕｍｉｎｕｍ　ａｌｌｏｙ）によって形成したが、他の金属材料によって形成してもよい。
（３）実施例１，２では、発電機の構成を省略したが、回転体２の回転を電力に変換し得る構成であれば、公知の様々な発電機を用いることができる。
（４）実施例１，２の翼部材は、翼厚方向を左右方向としたとき、ほぼ左右対称形状とされた構成であったが、左右非対称の形状であってもよい。
（５）実施例２では、補強材が翼部材の上下方向全体に亘って配置される例を示したが、翼部材の上下方向一部のみに補強材が配置されていてもよい。
（６）実施例２では、角筒状の孔部に補強材を埋め込む例を示したが、補強材を埋め込む孔部は角筒状の孔部に限られず、円筒状の孔部など、他の形状の孔部であってもよい。
（７）実施例２では、翼厚方向中央位置付近に補強材を埋め込む例を示したが、補強材を埋め込む位置は翼厚方向内側寄りの位置であってもよく外側寄りの位置であってもよい。或いは、翼厚方向全体に亘って補強材が配置されていてもよい。
（８）実施例１，２では、回転軸Ｃの位置に回転中心となる軸部材が存在しない構成を例示したが、回転軸Ｃの位置に回転中心となる軸部材が存在する構成であってもよい。 <Other embodiments>
The present invention is not limited to the first embodiment described with reference to the above description and drawings. For example, the following embodiments are also included in the technical scope of the present invention.
(1) In the first and second embodiments, the vertical axis wind turbine 1 provided with the three blade members 10 is illustrated, but the number of blade members may be two or four or more.
(2) In Examples 1 and 2, the wing member is formed of aluminum or an aluminum alloy, but may be formed of other metal materials.
(3) Although the configuration of the generator is omitted in the first and second embodiments, various known generators can be used as long as the configuration can convert the rotation of the rotating body 2 into electric power.
(4) Although the blade member of Examples 1 and 2 has a substantially symmetrical shape when the blade thickness direction is the left-right direction, the blade member may have an asymmetrical shape.
(5) In the second embodiment, the example in which the reinforcing material is arranged over the entire vertical direction of the wing member is shown, but the reinforcing material may be arranged only in a part of the vertical direction of the wing member.
(6) In the second embodiment, the example in which the reinforcing material is embedded in the rectangular tube-shaped hole portion is shown. However, the hole portion in which the reinforcing material is embedded is not limited to the rectangular tube-shaped hole portion. It may be a hole of the shape.
(7) In the second embodiment, the example in which the reinforcing material is embedded near the center position in the blade thickness direction is shown. However, the position in which the reinforcing material is embedded may be a position closer to the inner side than the blade thickness direction. Also good. Or the reinforcing material may be arrange | positioned over the whole blade thickness direction.
(8) In the first and second embodiments, the configuration in which the shaft member serving as the rotation center does not exist at the position of the rotation axis C is illustrated, but the shaft member serving as the rotation center exists at the position of the rotation axis C. Also good.
　１…垂直軸型風車
　５Ａ，５Ｂ…回転部材
　１０…翼部材
　１１…表面部
　１２…分割部材
　１４…翼表面部
　３１Ａ，３２Ａ，４１Ａ，４２Ａ，５１Ａ，５２Ａ…露出面部
　３１Ｂ，３２Ｂ，４１Ｂ，４１Ｃ，４２Ｂ，４２Ｃ，５１Ｃ，５２Ｃ…嵌合構造部
　３８，４８，４９，５８，２３８，２３９，２４８，２４９，２５８，２５９…連結壁部
　Ｃ…回転軸 DESCRIPTION OF SYMBOLS 1 ... Vertical axis type windmill 5A, 5B ... Rotating member 10 ... Blade member 11 ... Surface part 12 ... Dividing member 14 ... Blade surface part 31A, 32A, 41A, 42A, 51A, 52A ... Exposed surface part 31B, 32B, 41B, 41C , 42B, 42C, 51C, 52C ... fitting structure part 38, 48, 49, 58, 238, 239, 248, 249, 258, 259 ... connecting wall part C ... rotating shaft

Claims (5)

  1. 　所定方向の回転軸を中心として回転する回転部材に連結されるとともに、前記回転軸と交差する放射方向において前記回転軸から離れた位置に配置され、前記回転軸の方向に沿って延びる風力発電用の翼部材であって、
    　翼弦方向の各位置にそれぞれ配置される複数の分割部材を備えるとともに、複数の前記分割部材が連結された構成をなし、
    　前記分割部材には、当該翼部材の表面部を構成する部分である翼表面部が設けられ、
    　複数の前記分割部材は、前記翼弦方向で隣接し合う両部材にそれぞれ設けられた前記翼表面部の端部同士が弾性変形によって嵌合する構造である風力発電用の翼部材。     For wind power generation that is connected to a rotating member that rotates about a rotating shaft in a predetermined direction, and that is disposed at a position away from the rotating shaft in a radial direction intersecting the rotating shaft and extends along the direction of the rotating shaft A wing member of
    A plurality of divided members arranged at each position in the chord direction are provided, and a plurality of the divided members are connected to each other.
    The split member is provided with a blade surface portion which is a portion constituting the surface portion of the blade member,
    The plurality of divided members are blade members for wind power generation having a structure in which ends of the blade surface portions provided in both members adjacent to each other in the chord direction are fitted by elastic deformation.
  2. 　前記分割部材の前記翼表面部は、当該翼部材の外側に露出する露出面部と、前記露出面部よりも当該翼部材の内部側に突出又は延出する嵌合構造部とを備え、
    　複数の前記分割部材において前記翼弦方向で隣接する部材は、互いの前記露出面部同士が隣接して配置され且つ互いの前記嵌合構造部同士がそれら前記露出面部よりも内部側で嵌合する構造である請求項１に記載の風力発電用の翼部材。     The blade surface portion of the split member includes an exposed surface portion exposed to the outside of the blade member, and a fitting structure portion that protrudes or extends to the inner side of the blade member than the exposed surface portion.
    In the plurality of divided members, the adjacent members in the chord direction are arranged so that the exposed surface portions of each other are adjacent to each other, and the fitting structure portions of each other are fitted on the inner side of the exposed surface portions. The wing member for wind power generation according to claim 1, which has a structure.
  3. 　前記分割部材は、翼厚方向の両側に前記翼表面部がそれぞれ配置され、
    　少なくともいずれかの前記分割部材において、両側の前記翼表面部を連結するリブ状の連結壁部が形成されている請求項２に記載の風力発電用の翼部材。     The split member has the blade surface portions arranged on both sides in the blade thickness direction,
    The blade member for wind power generation according to claim 2, wherein a rib-like connecting wall portion that connects the blade surface portions on both sides is formed in at least one of the divided members.
  4. 　複数の前記分割部材において前記翼弦方向で隣接する部材は、一方の部材における前記翼表面部の端部に、他方の部材における前記翼表面部の端部が外側から嵌め合わされる構造であり、少なくとも外側から嵌め合わされる前記翼表面部に前記連結壁部が連結されている請求項３に記載の風力発電用の翼部材。 The members adjacent in the chord direction in the plurality of divided members have a structure in which the end portion of the blade surface portion of the other member is fitted from the outside to the end portion of the blade surface portion of one member, The blade member for wind power generation according to claim 3, wherein the connecting wall portion is connected to the blade surface portion fitted at least from the outside.
  5. 　前記分割部材は、金属材料の押出成形材である請求項１から請求項４のいずれか一項に記載の風力発電用の翼部材。 The blade member for wind power generation according to any one of claims 1 to 4, wherein the divided member is an extruded material of a metal material.
PCT/JP2016/073661 2015-09-28 2016-08-10 Blade member for wind power generation WO2017056751A1 (en)

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Publication number Priority date Publication date Assignee Title
JP2003293937A (en) * 2002-04-03 2003-10-15 Ebara Corp Blade structure for vertical axis windmill
JP2006118434A (en) * 2004-10-21 2006-05-11 Nippon Koki Kogyo Kk Method for manufacturing light weight wind mill blade
JP2013087632A (en) * 2011-10-13 2013-05-13 Sinfonia Technology Co Ltd Straight blade for vertical shaft type windturbine, and straight blade vertical shaft type windturbine
JP5506033B2 (en) * 2008-07-17 2014-05-28 のあい株式会社 Wind turbine for wind power generation and manufacturing method thereof

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2003293937A (en) * 2002-04-03 2003-10-15 Ebara Corp Blade structure for vertical axis windmill
JP2006118434A (en) * 2004-10-21 2006-05-11 Nippon Koki Kogyo Kk Method for manufacturing light weight wind mill blade
JP5506033B2 (en) * 2008-07-17 2014-05-28 のあい株式会社 Wind turbine for wind power generation and manufacturing method thereof
JP2013087632A (en) * 2011-10-13 2013-05-13 Sinfonia Technology Co Ltd Straight blade for vertical shaft type windturbine, and straight blade vertical shaft type windturbine

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