JPH07117789A - Fiber reinforced resin wing and manufacture thereof - Google Patents

Abstract

PURPOSE:To inexpensively manufacture even a long size wing body in which adhesion failure is hardly caused. CONSTITUTION:A fiber reinforced resin wing is composed of plural rib plates 2 which are arranged in parallel with each other and have a wing-shaped cross section, plural skin plate installing members 4 protrusively arranged at specific intervals along the outer periphery on both surfaces of these rib plates 2, a pair of upper and lower base skin plates 3A and 3B which are arranged between these rib plates 2 so as to be fitted around the skin plate installing members 4 and are respectively joined to the rib plates 2 and the skin plate installing members 4 and in which a front edge part and a rear edge part are joined to each other and a fiber reinforced resin outer layer 6 formed on the outer peripheral surfaces of the rib plates 2 and the base skin plates 3A and 3B.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a fiber-reinforced resin wing used for a hydrofoil connected between hulls of a high-speed catamaran and a method for manufacturing the wing.

[0002]

2. Description of the Related Art Conventionally, a wing body made of fiber reinforced resin (hereinafter referred to as FRP) has a pair of upper and lower blades 12A formed by a female mold 11, as shown in FIGS. 12
A plurality of rib plates 13 are arranged at a predetermined interval between B,
The edge of the rib plate 13 and the blades 12A and 12B are bonded together, and the front and rear ends of the blades 12A and 12B are bonded to each other to assemble the blade body 14, and the adhesiveness of the front and rear bonded portions of the blade body 14 is improved. In order to increase, the overlay part 15 by FRP
A and 15B were formed and reinforced.

[0003]

However, in the manufacturing process of the blade body, (1) after bonding the rib plate 13 to one of the blade plates 12A, the other blade plate 12B is superposed on these rib plates 13; At the time of bonding, the area to be bonded is large and the adhered adhesive is dried, so that a defective adhesion portion is likely to occur. (2) Since the rib plate 13 and the vanes 12A and 12B are single-sided joints, when a negative pressure acts on the vane body 14 or a twisting load is applied, the joint portion is easily separated. (3) When the wing body 14 has a long shape, a long female mold is required, which results in high cost.

There was a problem. SUMMARY OF THE INVENTION It is an object of the present invention to solve the above problems and to provide a fiber-reinforced resin wing and a method for manufacturing the wing, which is less likely to cause defective adhesion, and can form a long blade at low cost.

[0005]

In order to solve the above problems, a fiber-reinforced resin blade according to the present invention is provided with a plurality of rib plates having airfoil cross-sections arranged in parallel to each other and externally provided on both sides of these rib plates. A skin plate mounting member that is provided along the periphery and a rib plate and a skin mounting member that are externally fitted to and arranged on the skin plate mounting member between these rib plates, respectively,
It comprises a pair of upper and lower base skin plates having front and rear edges joined to each other, and a fiber-reinforced resin outer layer formed on the outer peripheral surfaces of the rib plate and the base skin plate.

Further, a method of manufacturing a fiber-reinforced resin wing is such that a molding die is used to mold a basic skin plate having a predetermined length along the upper and lower surfaces of the wing body, and the upper and lower basic skin plates are combined to form a front edge. The ribs and the trailing edge are joined to each other to form a plurality of rib plates having a shape along the airfoil cross section, and the skin plate mounting members are mounted on both sides of the rib plates along the outer peripheral edge and arranged in parallel with each other. Between the rib plates, the joined basic skin plate is arranged, and both ends of the basic skin plate are externally fitted to the skin plate mounting member, and the side surface of the rib plate and the side end surface of the basic skin plate,
The inner surface of the side end of the rib plate and the outer surface of the skin plate mounting member are joined together to form a base wing body, and a fiber reinforced resin is applied to the outer peripheral surface of the base wing body to form a fiber reinforced resin outer layer. It cures.

[0007]

According to the above construction, since a long blade body can be obtained by connecting a plurality of short-length base skin materials through the rib plate, a long forming die is not required, and a long blade is not required. -Shaped wing body can be easily manufactured at low cost. In addition, the joint portion of the basic skin plate and the rib plate can be adhered by the skin plate mounting member at a three-dimensional joint surface, so that it is possible to sufficiently cope with negative pressure and torsion load. Further, the rib plate provided in the wing body at regular intervals makes it possible to maintain an accurate cross section even with a long wing body. Furthermore, even when changing to a different shape of wing body, it is only necessary to replace the forming die of the basic skin material with a short length, so the manufacturing cost can be sufficiently reduced and it is possible to handle various types of small volume production. You can

[0008]

EXAMPLE An example of a fiber-reinforced resin blade according to the present invention will be described below with reference to FIGS.

This wing body 1 is, as shown in FIG.
The rib plates 2 made of FRP, which are smaller than the cross section of the rib plate 2 by a predetermined amount, are arranged parallel to each other at regular intervals.
Upper and lower basic skin plates 3A, 3B are interposed between the upper and lower surfaces of the wing body 1 between them. A plurality of skin plate mounting members 4 are provided on both sides of the rib plate 2 at predetermined intervals along the outer peripheral edge on the inner side from the outer peripheral edge by the thickness + α of the basic skin plates 3A and 3B. Upper and lower basic skin plates 3A and 3B having front and rear edges bonded to each other are externally fitted to these skin plate mounting members 4. Then, a prepreg sheet (for example, carbon fiber impregnated with epoxy resin) is wound around the outer peripheral surface of the base blade body 5 including the rib plate 2 and the upper and lower base skin plates 3A and 3B to form the fiber-reinforced resin outer layer 6. Has been formed.

Next, a method for manufacturing the vertically symmetrical blade body 1 will be described with reference to FIGS. (1) Manufacture a male mold 7 of upper and lower halves of the wing body 1 having a short length L, apply FRP on the male mold 7 and harden it, and make the basic skin material 3A thin enough to be self-supporting , 3B are manufactured. (FIG. 2) (2) The basic skin plates 3A and 3B are overlapped and the front edge portion and the rear edge portion are joined by an adhesive made of epoxy resin or the like. (FIG. 3) (3) A rib plate 2 having a shape slightly smaller than the cross section of the blade body 1 and having a relatively large thickness is formed by FRP. (4) The base skin plate 3 from the outer peripheral edge on both sides of the rib plate 2
A plurality of skin plate mounting members 4 are bonded and fixed at a predetermined interval along the outer peripheral edge slightly inward by the thickness + α of A and 3B, respectively, with an adhesive made of epoxy resin or the like. (FIG. 4) (5) The joined basic skin plates 3A and 3B are connected to the rib plate 2.
The skin plate mounting member 4 of
A and 3B and the rib plate 2 are combined, and the side skins of the base skin plates 3A and 3B and the rib plate 2 and the side skins of the base skin plates 3A and 3B and the skin plate are attached by an adhesive made of epoxy resin or the like. The base wing body 5 is formed by bonding the outer surface of the member 4 to each other. The base wing body 5 has a shape in which the peripheral edge of the rib plate 2 slightly projects from the outer surfaces of the base skin plates 3A and 3B. (6) Then, a prepreg sheet is wound around the outer peripheral portion of the base wing body 5 in a predetermined amount so that its outer surface is along the outer surface of the wing body 1 and is cured to form the fiber-reinforced resin outer layer 6.
(Fig. 5)

According to the above-described embodiment, (A) when the blade body 1 is manufactured, the bonding area at the time of bonding does not become wider than in the conventional case, so that a defective bonding portion due to the drying of the adhesive hardly occurs. (B) The rib plate 2 and the basic skin plates 3A and 3B are joined together in a three-dimensional manner, and the outer peripheral edge of the rib plate 2 is also joined in a state of biting into the fiber-reinforced resin outer layer 6, so that the wing body Even when a negative pressure is applied to 1 or a torsional load is applied, the bonded portion is unlikely to peel off, which is extremely safe. (C) Even if the wing body 1 has a long shape, it can be formed into a long shape by adding the basic skin plates 3A and 3B through the rib plate 2, so that a long molding die is not necessary and can be manufactured at low cost. can do. (D) Since the rib plates 2 are provided in the vicinity of the outer peripheral surface of the blade body 1 at regular intervals, even a long blade body 1 can maintain an accurate cross-sectional shape. (E) Even if the shape of the wing body 1 is changed, it is only necessary to replace the male mold 7 having a short length, and it is possible to cope with a small amount and various types of production. Has the effect.

In the above embodiment, the basic skin plate 3 is used.
Although the male type 7 is used for manufacturing A and 3B, the female type may of course be used.

[0013]

As described above, according to the present invention, a long blade can be obtained by connecting a plurality of base skin materials having a short length through rib plates, so that a long molding die can be obtained. It is possible to easily manufacture a long blade body at a low cost without the need for. In addition, the joint portion of the basic skin plate and the rib plate can be adhered by the skin plate mounting member at a three-dimensional joint surface, so that it is possible to sufficiently cope with negative pressure and torsion load. Further, the rib plate provided in the wing body at regular intervals makes it possible to maintain an accurate cross section even with a long wing body. Furthermore, even when changing to a different shape of wing body, it is only necessary to replace the forming die of the basic skin material with a short length, so the manufacturing cost can be sufficiently reduced and it is possible to handle various types of small volume production. You can

[Brief description of drawings]

FIG. 1 is a partially cutaway perspective view showing an embodiment of a fiber-reinforced resin wing according to the present invention.

FIG. 2 is a perspective view showing a manufacturing procedure of the fiber-reinforced resin wing.

FIG. 3 is a perspective view showing a manufacturing procedure of the fiber-reinforced resin wing.

FIG. 4 is a perspective view showing a manufacturing procedure of the fiber-reinforced resin wing.

FIG. 5 is a plan view showing a manufacturing procedure of the fiber-reinforced resin blade.

6 (a) to 6 (c) are explanatory views showing a procedure for manufacturing a conventional fiber-reinforced resin blade.

[Explanation of symbols]

 1 wing body 2 rib plate 3A, 3B basic skin plate 4 skin plate mounting member 5 basic wing body 6 fiber reinforced resin outer layer 7 male type

Claims (2)

[Claims] 1. A plurality of rib plates having airfoil cross sections arranged in parallel to each other, skin plate mounting members protruding from both sides of the rib plates along outer peripheral edges, and skin plate mounting between these rib plates. A pair of upper and lower base skin plates, which are externally fitted to the member and bonded to the rib plate and the skin mounting member, respectively, and front and rear edges thereof are bonded to each other; and outer peripheries of the rib plate and the base skin plate. A fiber-reinforced resin wing, comprising a fiber-reinforced resin outer layer formed on a surface. 2. A forming die is used to form a basic skin plate having a predetermined length along the upper and lower surfaces of the wing body, and the upper and lower basic skin plates are combined to form front edge portions and rear edge portions, respectively. A plurality of rib plates that are joined to each other are formed along the airfoil cross section, skin plate attachment members are attached to both sides of the rib plates along the outer peripheral edge, and the basic skins are joined between the rib plates that are arranged parallel to each other. A plate is placed and both ends of the basic skin plate are externally fitted to the skin plate mounting member, and the side surface of the rib plate and the side end surface of the basic skin plate, the inner surface of the side end portion of the rib plate and the outer surface of the skin plate mounting member are attached. A method for manufacturing a fiber-reinforced resin wing, characterized in that a base wing body is formed by joining them together, and a fiber reinforced resin is applied to an outer peripheral surface of the base wing body to form a fiber reinforced resin outer layer and cured.