JP2007290585A - Frp molded body reinforcing structure, and its manufacturing method - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an FRP reinforcing body having high degrees of freedom of the sectional shape orthogonal to the longitudinal direction which is capable of enhancing the workability when adhering the FRP reinforcing body to an FRP molded body, and easily changing the height of a reinforcing body side piece of the FRP reinforcing body by using a relatively inexpensive versatile mold. <P>SOLUTION: An FRP molded body 22 is formed in a plate shape having a curved surface. An FRP reinforcing body 16 is provided on the curved surface of the FRP molded body 22 in an extending manner along the curved surface, and the section orthogonal to the longitudinal direction of the FRP reinforcing body 16 is formed in a closed section together with the FRP molded body 22. A reinforcing body main part 16a of the FRP reinforcing body 16 is formed in a flat strip shape. A pair of reinforcing body side pieces 16b, 16b are continuously provided on both edges of the reinforcing body main part 16a, and other edges of the reinforcing body side pieces 16b, 16b are formed into a curve along the curved surface of the FRP molded body 22. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to a structure for reinforcing an FRP molded body such as a wind deflector or an engine hood of a vehicle molded with fiber reinforced plastics (hereinafter referred to as FRP), and a manufacturing method thereof.

Conventionally, a reinforcing material is disposed after a reinforcing fiber mat is interposed in a reinforcing rib molding portion of one mold for molding an FRP molded product having reinforcing ribs, and the reinforcing material is separated from the reinforcing material above the reinforcing material. An FRP molded article in which a closed-cell anti-sink sheet is laid over the entire width of the reinforcing rib, and the other mold is brought into contact with the anti-slip sheet with a reinforcing fiber mat interposed therebetween to inject and cure the resin into the mold. A manufacturing method is disclosed (for example, refer to Patent Document 1). In this method of manufacturing an FRP molded product, an FRP molded product is obtained by injecting a resin into a cavity formed by bringing the lower mold, which is the one mold, into contact with the upper mold, which is the other mold. The RIM method (Resin Injection Molding method) to be manufactured is used.
In the manufacturing method of the FRP molded product thus configured, the molded product is reinforced by the reinforcing material embedded in the reinforcing rib, and the sink mark is formed by the anti-sink sheet having a width substantially equal to or larger than the width of the reinforcing rib. Can be prevented.

  On the other hand, there is a method of manufacturing an FRP molded body by an HLU method (Hand Lay Up method) in which a glass mat is covered with a lower mold of a predetermined shape, and a resin liquid is applied to the glass mat and impregnated and fixed. Are known. As an example, a method of manufacturing a wind deflector to be attached to a roof panel of a vehicle cab using the HLU method will be described. As shown in FIG. 13, the wind deflector 114 includes a first deflector 111 that covers the front edge and both side edges of the roof panel 113a, and a second deflector 112 that covers the center and rear edge of the roof panel 113a. The first deflector 111 includes a first deflector main body 121 formed in a curved surface whose curvature greatly changes from the front to the rear, a first FRP reinforcing body 131 bonded to the front rear surface of the first deflector main body 121, and a first It has the 2nd FRP reinforcement body 132 adhere | attached from the front back surface of the deflector main body 121 to the rear back surface (FIGS. 13 and 14). The second deflector 112 includes a second deflector body 122 formed in a plate shape with a relatively wide area having a curved surface projecting upward, and an FRP reinforcing body 116 bonded to the back surface of the second deflector body 122. (FIGS. 11 and 12).

First, a method for manufacturing the second deflector 112 will be described.
(1-a) Production of second deflector body 122 After a glass mat is put on the lower mold for the second body processed into a shape corresponding to the second deflector body 122, and a resin liquid is applied and impregnated on the glass mat Then, this resin solution is semi-dried to form a resin portion. The semi-drying second deflector having a structure in which the glass mat and the resin portion are laminated by repeating the glass mat covering step, the resin liquid impregnation step, and the resin liquid semi-drying step twice or three times or more. The main body 122 is obtained (FIGS. 11 and 12).
(1-b) Production of FRP Reinforcing Body 116 After a reinforcing glass lower surface 118 for molding the FRP reinforcing body 116 is covered with a rectangular glass mat 116c and the glass mat 116c is impregnated with a resin solution. Then, the impregnated resin liquid is semi-dried to form the resin portion 116d (FIGS. 9 and 10). The reinforcing body glass mat 116c and the resin portion 116d are laminated by repeating the covering step of the reinforcing body glass mat 116c, the impregnation step of the resin liquid, and the semi-drying step of the resin liquid twice or three times or more. A semi-dry FRP reinforcing body 116 having the above structure is obtained.
(1-c) Adhesion of FRP Reinforcement 116 to Second Deflector Body 122 The semi-dry FRP reinforcement 116 is pressed against the curved surface of the back surface of the semi-dry second deflector body 122 (FIGS. 11 and 12). At this time, the FRP reinforcing body 116 is deformed into a shape corresponding to the curved surface of the back surface of the second deflector body 122, and the FRP reinforcing body 116 is temporarily fixed to the back surface of the second deflector body 122 by the adhesive force of the semi-dry resin portion 116d. The In this state, the FRP reinforcing body 116 is bonded to the back surface of the second deflector body 122 using the bonding FRP sheet 117.

Next, a method for manufacturing the first deflector 111 will be described.
(2-a) Production of the first deflector body 121 After a glass mat is placed on the lower mold for the first body processed into a shape corresponding to the first deflector body 121, and a resin liquid is applied and impregnated on the glass mat Then, this resin solution is semi-dried to form a resin portion. The semi-drying first deflector having a structure in which the glass mat and the resin part are laminated by repeating the glass mat covering step, the resin liquid impregnation step, and the resin liquid semi-drying step twice or three times or more. The main body 121 is obtained (FIGS. 13 and 14).
(2-b) Production of first FRP reinforcing body 131 After covering a rectangular glass mat on the lower mold for the first reinforcing body for forming the first FRP reinforcing body 131 and applying and impregnating the resin liquid to the glass mat Then, the impregnated resin solution is semi-dried to form a resin portion. The first reinforcing body glass mat and the resin portion are obtained by repeating the covering step of the first reinforcing body glass mat, the impregnation step of the resin liquid, and the semi-drying step of the resin liquid twice or three times or more. A semi-dry first FRP reinforcement 131 having a laminated structure is obtained (FIGS. 13 and 14).
(2-c) Adhesion of the first FRP reinforcement body 131 to the first deflector body 121 The semi-dry first FRP reinforcement body 131 is pressed against the curved surface of the back surface of the semi-dry first deflector body 121 (FIGS. 13 and 14). At this time, the first FRP reinforcement 131 is deformed into a shape corresponding to the curved surface of the back surface of the first deflector body 121, and the first FRP reinforcement 131 is temporarily fixed to the back surface of the first deflector body 121 by the adhesive force of the semi-dry resin part. Is done. In this state, the first FRP reinforcement 131 is bonded to the back surface of the first deflector body 121 using the first bonding FRP sheet 141.

(2-d) Production of Second FRP Reinforcing Body 132 A rectangular glass mat is placed on the lower mold for the second reinforcing body for forming the second FRP reinforcing body 132. After the resin liquid is applied and impregnated on the glass mat, the impregnated resin liquid is semi-dried to form a resin portion. By repeating the covering step of the second reinforcing glass mat, the impregnation step of the resin liquid and the semi-drying step of the resin liquid twice or three times or more, the second reinforcing glass mat and the resin portion are obtained. A semi-dry second FRP reinforcing body 132 having a laminated structure is obtained (FIGS. 13 and 14).
(2-e) Adhesion of Second FRP Reinforcement Body 132 to First Deflector Body 121 The semi-dry second FRP reinforcement body 132 is pressed against the curved surface of the back surface of the semi-dry first deflector body 121 (FIGS. 13 and 14). At this time, the second FRP reinforcing body 132 is deformed into a shape corresponding to the curved surface of the back surface of the first deflector body 121, and the second FRP reinforcing body 132 is temporarily fixed to the back surface of the first deflector body 121 by the adhesive force of the semi-dry resin part. Is done. In this state, the second FRP reinforcing body 132 is bonded to the back surface of the first deflector body 121 using the second bonding FRP sheet 142 (FIGS. 13 and 14).
Japanese Patent Application Laid-Open No. 5-11724 (Claim 1, Specification, second page, left column, line 22 to same page, left column, line 25, FIG. 1)

However, the manufacturing method of the FRP molded product described in Patent Document 1 requires a large upper mold and a lower mold for molding the entire FRP molded product having reinforcing ribs, so that the manufacturing cost is greatly increased. However, there is a problem that it is not suitable when there are many types of FRP molded products and the production quantity is small.
Moreover, in the manufacturing method of the FRP molded article described in Patent Document 1, since a reinforcing material and an anti-sink sheet are embedded in the reinforcing rib, the number of parts increases, and there is a problem that the parts management becomes troublesome. there were.
In the method of manufacturing a wind deflector using the HLU method, when the semi-dry FRP reinforcement is pressed against the curved surface on the back surface of the semi-dry deflector body, the FRP reinforcement body has a shape corresponding to the curved surface on the back surface of the first deflector body. The FRP reinforcement body may be peeled off from the back surface of the first deflector body due to the elastic force of the FRP reinforcement body. In this case, the workability when the FRP reinforcement body is bonded to the FRP molded body is lowered. There was a point.
Furthermore, in the manufacturing method of the wind deflector using the HLU method, the first reinforcing body side piece of the first FRP reinforcing body is formed relatively low and constant over the entire length, and the second reinforcing body side piece of the second FRP reinforcing body is compared with the entire length. Therefore, there is a risk that a step will occur at the joint between the rear part of the first FRP reinforcement and the front part of the second FRP reinforcement, and stress concentration may occur at this joint. It was.
A first object of the present invention is to provide a reinforcing structure for an FRP molded body and a method for manufacturing the same, which can improve workability when the FRP reinforcing body is bonded to the FRP molded body.
The second object of the present invention is to change the height of the reinforcing member side piece of the FRP reinforcing member even if only the lower reinforcing member is used as a relatively inexpensive general-purpose die without using the reinforcing die. Accordingly, an object of the present invention is to provide a method for manufacturing a reinforcing structure of an FRP molded body, which can obtain an FRP molded body having an optimal strength without excessive or insufficient strength of each part.
A third object of the present invention is to provide a method for manufacturing a reinforcing structure of an FRP molded body that can prevent stress concentration from occurring in the joint portion by smoothly joining the FRP reinforcing bodies without steps. It is in.

In the invention according to claim 1, as shown in FIGS. 3 to 6, the FRP molded bodies 21 and 22 formed into a plate shape having a curved surface, and the curved surfaces of the FRP molded bodies 21 and 22 are predetermined along the curved surface. This is an improvement of the reinforcing structure of the FRP molded body provided with FRP reinforcing bodies 16, 31, and 32 having a cross section extending in the direction of FIG.
The characteristic configuration is that the FRP reinforcements 16, 31, 32 are formed in a flat band shape, and the one side edges are on both sides of the reinforcement main parts 16a, 31a, 32a. Each of the other side edges is provided with a pair of reinforcing body side pieces 16b, 31b, and 32b formed in curved lines along the curved surfaces of the FRP molded bodies 21 and 22, respectively.
In the reinforcing structure of the FRP molded body described in claim 1, the FRP reinforcing bodies 16, 31, 32 are hardly deformed when the FRP reinforcing bodies 16, 31, 32 are bonded to the FRP molded bodies 21, 22. The FRP reinforcements 16, 31, 32 can be temporarily fixed to the FRP molded bodies 21, 22. Further, by changing the height of the reinforcing body side pieces 16b, 31b, 32b of the FRP reinforcing bodies 16, 31, 32, the FRP reinforcing bodies 16, 31, 32 having a high degree of freedom in the cross-sectional shape orthogonal to the longitudinal direction can be produced. .

As shown in FIGS. 1 to 4, the invention according to claim 2 is adapted to the developed shape of the FRP reinforcing bodies 16, 31, 32 that reinforce the FRP molded bodies 21, 22 formed into plate shapes having curved surfaces. A step of producing a reinforcing body glass mat 16c by cutting the glass mat, a step of covering the predetermined reinforcing body lower mold 18 for forming the FRP reinforcing body 16 with the reinforcing body glass mat 16c, and a reinforcing body A step of applying and impregnating a resin liquid to the glass mat 16c for use, a step of semi-drying the impregnated resin liquid, a step of covering the glass mat 16c for reinforcing bodies, a step of impregnating the resin liquid, and a step of semi-drying the resin liquid Are repeated twice or three times or more to produce the semi-dry FRP reinforcements 16, 31, 32, and the semi-dry FRP reinforcements 16, 31, 32 are pressed against the curved surfaces of the FRP molded bodies 21, 22. Including processes A method for producing a reinforcing structure of the FRP molded product.
In the manufacturing method of the reinforcing structure of the FRP molded body described in claim 2, it is a relatively inexpensive general-purpose type without using the upper die for reinforcing body in order to produce the FRP reinforcing bodies 16, 31, 32. Even if only the lower die 18 for reinforcing body is used, the FRP reinforcing body 16, 31, 32 is hardly deformed when the FRP reinforcing bodies 16, 31, 32 are bonded to the FRP molded bodies 21, 22. , 31 and 32 can be temporarily fixed to the FRP molded bodies 21 and 22. Further, by changing the height of the reinforcing body side pieces 16b, 31b, 32b of the FRP reinforcing bodies 16, 31, 32, the FRP reinforcing bodies 16, 31, 32 having a high degree of freedom in the cross-sectional shape orthogonal to the longitudinal direction can be produced. . Further, when the FRP reinforcement bodies 31 and 32 are coupled to each other, the FRP reinforcement bodies 31 and 32 can be coupled smoothly without causing a step in the coupling portion.

As shown in FIG. 8, the invention according to claim 3 includes a step of covering a predetermined reinforcing body lower mat 18 for forming the FRP reinforcing body 56 with a reinforcing body glass mat, and a resin on the reinforcing body glass mat. The step of applying and impregnating the solution, the step of semi-drying the impregnated resin solution, the step of covering the reinforcing material glass mat, the step of impregnating the resin solution and the step of semi-drying the resin solution are performed two or three times. The process of producing the semi-dry FRP reinforcing body 56 by repeating the above, the process of cutting the tip edges of the pair of reinforcing body side pieces 56b of the semi-dry FRP reinforcing body 56 to the curved surface of the FRP molded body, and the FRP reinforcing body And a step of pressing 56 against the curved surface of the FRP molded body.
In the method for manufacturing a reinforcing structure for an FRP molded body according to claim 3, the lower body for a reinforcing body, which is a relatively inexpensive general-purpose type, is used in order to produce the FRP reinforcing body 56 without using the upper mold for the reinforcing body. Even if only the mold 18 is used, the FRP reinforcing body 56 can be temporarily fixed to the FRP molded body without substantially deforming the FRP reinforcing body 56 when the FRP reinforcing body 56 is bonded to the FRP molded body. Further, by changing the height of the reinforcing body side piece 56b of the FRP reinforcing body 56, the FRP reinforcing body 56 having a high degree of freedom in the cross-sectional shape orthogonal to the longitudinal direction can be produced. Further, when the FRP reinforcement bodies 56 are coupled to each other, the FRP reinforcement bodies 56 can be smoothly coupled without causing a step in the coupling portion.

  According to the present invention, the reinforcing body main part of the FRP reinforcing body that reinforces the FRP molded body is formed in a flat band shape, and one side edge of the pair of reinforcing body side pieces is continuously provided on both side edges of the reinforcing body main part, Further, since the other side edges of these reinforcing body side pieces are formed in a curved line along the curved surface of the FRP molded body, the FRP reinforcing body is not deformed when the FRP reinforcing body is bonded to the FRP molded body. It can be temporarily fixed to the FRP molded body. As a result, since the FRP reinforcing body does not move away from the FRP molded body when the FRP reinforcing body is temporarily fixed to the FRP molded body, the workability of bonding the fixed FRP reinforcing body to the FRP molded body can be improved. Moreover, since the height of the reinforcing body side piece of the FRP reinforcing body can be easily changed, an FRP reinforcing body having a high degree of freedom in the cross-sectional shape orthogonal to the longitudinal direction can be produced. As a result, by changing the height of the reinforcing body side piece of the FRP reinforcing body in accordance with the strength of each part of the FRP molded body, an FRP molded body having an optimum strength without excess or deficiency in the strength of each part can be obtained.

Further, after the glass mat for the reinforcing body is manufactured by cutting the glass mat in accordance with the developed shape of the FRP reinforcing body for reinforcing the FRP molded body, the step of covering the reinforcing body glass mat with the lower mold for the reinforcing body and the reinforcement The step of impregnating the body glass mat with the resin solution and the step of semi-drying the resin solution are repeated twice or three times or more to produce a semi-dry FRP reinforcement, and this semi-dry FRP reinforcement is formed by FRP molding. If it is pressed against the curved surface of the body, the FRP reinforcement body can be used when the FRP reinforcement body is bonded to the FRP molded body even if only the lower mold for the reinforcement body, which is a relatively inexpensive general-purpose mold, is used without using the upper mold for the reinforcement body. The FRP reinforcing body can be temporarily fixed to the FRP molded body with almost no deformation. As a result, when the FRP reinforcement body is temporarily fixed to the FRP molded body, the FRP reinforcement body does not move away from the FRP molded body, so that the fixed FRP reinforcement body can be bonded to the FRP molded body in the same manner as described above. Can be improved. Moreover, since the height of the reinforcing body side piece of the FRP reinforcing body can be easily changed, an FRP reinforcing body having a high degree of freedom in the cross-sectional shape orthogonal to the longitudinal direction can be produced. As a result, by changing the height of the reinforcing body side piece of the FRP reinforcing body in accordance with the strength of each part of the FRP molded body, an FRP molded body having an optimum strength without excess or deficiency in the strength of each part as described above can be obtained. It is done. In addition, when joining the FRP reinforcements, the FRP reinforcements can be smoothly joined without any step in the joints, thus preventing stress concentration from occurring at the joints of the FRP reinforcements. it can.
Further, the step of covering the reinforcing body glass mat with the reinforcing body lower mold, the step of impregnating the reinforcing body glass mat with the resin solution, and the step of semi-drying the resin solution are repeated twice or three times or more. After preparing the FRP reinforcing body, cutting the tip edges of the pair of reinforcing body side pieces of the semi-dry FRP reinforcing body according to the curved surface of the FRP molded body, and pressing the FRP reinforcing body against the curved surface of the FRP molded body, Similar to the above, it is possible to improve the adhesion workability of the fixed FRP reinforcing body to the FRP molded body, and to obtain an FRP molded body having an optimum strength without excessive or insufficient strength of each portion, and stress on the joint portion of the FRP reinforcing body. Concentration can be prevented from occurring.

Next, the best mode for carrying out the present invention will be described with reference to the drawings.
As shown in FIGS. 5 and 7, a wind deflector 14 formed of FRP is attached to the upper surface of the roof panel 13 a of the cab 13 of the tractor 10. The wind deflector 14 includes a first deflector 11 that covers the front edge and both side edges of the roof panel 13a, and a second deflector 12 that covers the center and rear edge of the roof panel 13a (FIGS. 5 and 7). The second deflector 12 includes a second deflector body 22 formed in a plate shape with a relatively wide area having a curved surface projecting upward, and an FRP reinforcing body 16 bonded to the back surface of the second deflector body 22. (FIGS. 3 and 4). The FRP reinforcing body 16 is provided on the curved surface of the second deflector body 22 so as to extend in a predetermined direction along the curved surface, and a cross section perpendicular to the longitudinal direction of the FRP reinforcing body 16 is formed in a closed cross section together with the second deflector body 22. Is done. The FRP reinforcing body 16 has a reinforcing body main portion 16a formed in a flat belt shape, and a pair of reinforcing body side pieces 16b and 16b each having one side edge connected to both side edges of the reinforcing body main portion 16a. The planar strip-shaped reinforcing body main portion 16a is formed such that a cross section parallel to the longitudinal direction of the FRP reinforcing body 16 (hereinafter referred to as a longitudinal cross section) and a cross section orthogonal to the longitudinal direction (hereinafter referred to as an orthogonal cross section) are linearly formed. The Further, the other side edges of the pair of reinforcing body side pieces 16b, 16b are respectively formed in curves along the curved surface of the second deflector body 22. The height of the reinforcing body side pieces 16b, 16b is the highest in the center in the longitudinal direction, and is gradually lowered toward the both ends in the longitudinal direction. In addition, the code | symbol 17 in FIG. 3 is an FRP sheet for adhesion | attachment for adhere | attaching the FRP reinforcement body 16 on the back surface of the 2nd deflector main body 22. FIG. The bonding FRP sheet 17 is provided from the outer surface of the FRP reinforcing body 16 to the back surface of the second deflector body 22.

  On the other hand, the first deflector 11 includes a first deflector main body 21 formed in a curved surface whose curvature greatly changes from the front to the rear, and a first FRP reinforcing body 31 bonded to the front rear surface of the first deflector main body 21; It has the 2nd FRP reinforcement body 32 adhere | attached from the front back surface of the 1st deflector main body 21 to the rear back surface (FIGS. 5 and 6). The front portion of the first deflector body 21 is formed in a plate shape having a curved surface that protrudes forward and has a very large curvature in a section parallel to the traveling direction of the tractor (hereinafter referred to as a traveling direction section). The central portion of the first deflector body 21 is formed in a plate shape that protrudes upward and has a curved surface with a relatively small curvature in the cross section in the traveling direction. Further, the rear portion of the first deflector body 21 is formed in a plate shape having a curved surface with a substantially inverted S-shaped cross section with a front side protruding upward and a rear side protruding downward and having a very large curvature in the cross section in the traveling direction. The first FRP reinforcing body 31 is formed to have a relatively short length, and is provided on the front back surface of the first deflector body 21 so as to extend in the traveling direction of the tractor. The second FRP reinforcing body 32 is formed to have a relatively long length and is provided so as to extend in the traveling direction of the tractor from the front back surface to the rear back surface of the first deflector body 21. The first FRP reinforcing body 31 is formed with a closed cross section along with the first deflector body 21 in an orthogonal cross section. The first FRP reinforcing body 31 includes a first reinforcing body main portion 31a formed in a flat band shape, and a pair of first reinforcing body side pieces whose one side edge is connected to both side edges of the first reinforcing body main portion 31a. 31b, 31b. The first reinforcing body main portion 31a having a flat belt shape is formed such that the longitudinal section and the orthogonal section are both linear. Further, the other side edges of the pair of first reinforcing body side pieces 31b, 31b are respectively formed into curves along the curved surface of the first deflector body 21, that is, curves having extremely large curvatures. The heights of the first reinforcing body side pieces 31b and 31b are formed such that the front end is the lowest and gradually increases toward the rear. In addition, the code | symbol 41 in FIG. 6 is a 1st FRP sheet | seat for adhere | attaching the 1st FRP reinforcement 31 on the back surface of the 1st deflector main body 21. As shown in FIG. The first bonding FRP sheet 41 is provided from the outer surface of the first FRP reinforcement 31 to the rear surface of the first deflector body 21.

  The front part of the second FRP reinforcement body 32 is connected to the rear part of the first FRP reinforcement body 31, that is, the front part of the second FRP reinforcement body 32 is fitted into the rear part of the first FRP reinforcement body 31 (FIGS. 5 and 6). The second FRP reinforcing body 32 is formed with a closed cross section along with the first deflector body 21 in an orthogonal cross section. The second FRP reinforcing body 32 includes a second reinforcing body main portion 32a formed in a flat band shape and a pair of second reinforcing body side pieces each having one side edge connected to both side edges of the second reinforcing body main portion 32a. 32b, 32b. In the planar belt-like second reinforcing body main part 32a, both the longitudinal section and the orthogonal section are formed in a straight line. Also, the other side edges of the pair of second reinforcing body side pieces 32b, 32b are curved along the curved surface of the first deflector body 21, that is, curves that are relatively small in curvature from the front to the center and greatly change in curvature at the rear and are inverted. It is formed. The heights of the second reinforcing body side pieces 32b and 32b are formed such that the front end is the lowest, gradually increases toward the rear, and rapidly decreases toward the rear. In addition, the code | symbol 42 in FIG. 6 is a 2nd FRP sheet | seat for adhere | attaching the 2nd FRP reinforcement body 32 on the back surface of the 1st deflector main body 21. FIG. The second bonding FRP sheet 42 is provided from the outer surface of the second FRP reinforcing body 32 to the back surface of the first deflector body 21.

A method for manufacturing the second deflector 12 configured as described above will be described.
(1-a) Production of the second deflector body 22 After covering the lower mold for the second body processed into a shape corresponding to the second deflector body 22 with a glass mat, and impregnating the glass mat with a resin solution. Then, this resin solution is semi-dried to form a resin portion. The glass mat is preferably a non-woven fabric of glass fiber, and the resin liquid is preferably a thermosetting resin such as an unsaturated polyester resin or an epoxy resin. The semi-drying second deflector having a structure in which the glass mat and the resin portion are laminated by repeating the glass mat covering step, the resin liquid impregnation step, and the resin liquid semi-drying step twice or three times or more. The main body 22 is obtained (FIGS. 3 and 4).

(1-b) Production of FRP reinforcement body 16 First, a glass mat 16c for reinforcement is produced by cutting the glass mat in accordance with the developed shape of the FRP reinforcement body 16, and then reinforcement for forming the FRP reinforcement body 16 is performed. The body lower mold 18 is covered with a glass mat 16c for reinforcing body (FIGS. 1 and 2). The reinforcing body lower mold 18 has a substantially convex cross section perpendicular to the longitudinal direction of the lower mold. Next, after applying and impregnating the resin liquid to the reinforcing-material glass mat 16c, the impregnated resin liquid is semi-dried to form the resin portion 16d. As the reinforcing-material glass mat 16c and the resin liquid resin, the same ones as described in the above (1-a) are used. Further, by repeating the covering step of the reinforcing body glass mat 16c, the impregnation step of the resin liquid, and the semi-drying step of the resin liquid twice or three times or more, the reinforcing glass mat 16c and the resin portion 16d are obtained. A semi-dry FRP reinforcing body 16 having a laminated structure is obtained.

(1-c) Adhesion of FRP Reinforcement Body 16 to Second Deflector Body 22 The semi-dry FRP reinforcement body 16 is pressed against the curved surface of the back surface of the semi-dry second deflector body 22 (FIGS. 3 and 4). At this time, the front edge of the reinforcing body side piece 16b of the FRP reinforcing body 16 is formed in a shape corresponding to the curved surface of the back surface of the second deflector body 22, so that the FRP reinforcing body 16 is hardly deformed and is semi-dry resin portion. The FRP reinforcement body 16 can be temporarily fixed to the back surface of the second deflector body 22 by the adhesive force of 16d, and the FRP reinforcement body 16 is not separated from the second deflector body 22. In this state, the FRP reinforcing body 16 is bonded to the back surface of the second deflector body 22 using the bonding FRP sheet 17. Specifically, an adhesive glass mat is covered from the outer surface of the FRP reinforcing body 16 to the back surface of the second deflector body 22, and after applying and impregnating the resin liquid to the adhesive glass mat, the resin liquid is semi-dried. To form the resin part. As the bonding glass mat and the resin of the resin liquid, the same ones as described in the above (1-a) are used. The covering step of the bonding glass mat, the impregnation step of the resin solution, and the semi-drying step of the resin solution are repeated twice or three times or more. As a result, the FRP sheet 17 for bonding which forms the FRP reinforcing body 16 on the back surface of the second deflector body 22 is formed.

  In the second deflector 12 manufactured as described above, the second deflector body 22 has a curved surface protruding outward, and the FRP reinforcing body 16 is bonded to the back surface of the second deflector body 22. At this time, since the height of the reinforcing body side piece 16b at the center in the longitudinal direction of the FRP reinforcing body 16 is increased, the rigidity of the second deflector body 22 at this portion can be improved. That is, as a mold for producing the FRP reinforcing body 16, the reinforcement of the FRP reinforcing body 16 can be obtained by using only the lower mold 18 for reinforcing body, which is a relatively inexpensive general-purpose type, without using the upper mold for reinforcing body. Since the height of the body side piece 16b can be easily changed, the FRP reinforcing body 16 having a high degree of freedom in the orthogonal cross-sectional shape can be produced, and the second deflector 12 having the optimum strength without any excess or deficiency in the strength of each part can be obtained.

Next, the manufacturing method of the 1st deflector 11 is demonstrated.
(2-a) Production of the first deflector body 21 After a glass mat is put on the lower mold for the first body processed into a shape corresponding to the first deflector body 21, and a resin liquid is applied and impregnated on the glass mat Then, this resin solution is semi-dried to form a resin portion. As the resin for the glass mat and the resin liquid, the same resin as described in the above (1-a) is used. The semi-drying first deflector having a structure in which the glass mat and the resin part are laminated by repeating the glass mat covering step, the resin liquid impregnation step, and the resin liquid semi-drying step twice or three times or more. The main body 21 is obtained (FIGS. 5 and 6).

(2-b) Production of first FRP reinforcing body 31 First, a glass mat for the first reinforcing body is produced by cutting the glass mat in accordance with the developed shape of the first FRP reinforcing body 31, and then the first FRP reinforcing body 31 is formed. The first reinforcing body glass mat is placed on the first reinforcing body lower mold. The first reinforcing body lower mold has a substantially convex cross section perpendicular to the longitudinal direction of the lower mold. Next, after applying and impregnating the resin liquid to the first reinforcing body glass mat, the impregnated resin liquid is semi-dried to form a resin portion. As the first reinforcing glass mat and the resin liquid resin, the same ones as described in the above (1-a) are used. Further, by repeating the covering step of the first reinforcing body glass mat, the impregnation step of the resin liquid, and the semi-drying step of the resin liquid twice or three times or more, A semi-dry first FRP reinforcing body 31 having a structure in which is laminated is obtained (FIGS. 5 and 6).

(2-c) Adhesion of the first FRP reinforcement 31 to the first deflector body 21 The semi-dry first FRP reinforcement 31 is pressed against the curved surface of the back surface of the semi-dry first deflector body 21. At this time, since the tip edge of the first reinforcing body side piece 31b of the first FRP reinforcing body 31 is formed in a shape corresponding to the curved surface of the back surface of the first deflector body 21, the first FRP reinforcing body 31 is hardly deformed. The first FRP reinforcing body 31 can be temporarily fixed to the back surface of the first deflector body 21 by the adhesive force of the dry resin portion, and the first FRP reinforcing body 31 does not leave the first deflector body 21. In this state, the first FRP reinforcing body 31 is bonded to the back surface of the first deflector body 21 using the first bonding FRP sheet 41 (FIG. 6). Specifically, the first adhesive glass mat is covered from the outer surface of the first FRP reinforcing body 31 to the back surface of the first deflector body 21, and the resin liquid is applied and impregnated on the first adhesive glass mat. The liquid is semi-dried to form a resin part. As the first bonding glass mat and the resin liquid resin, the same ones as described in the above (1-a) are used. The covering step of the first bonding glass mat, the impregnation step of the resin solution, and the semi-drying step of the resin solution are repeated twice or three times or more. As a result, the first FRP sheet 41 for bonding the first FRP reinforcement 31 to the back surface of the first deflector body 21 is formed.

(2-d) Production of second FRP reinforcement body 32 First, a glass mat for a second reinforcement body is produced by cutting the glass mat in accordance with the developed shape of the second FRP reinforcement body 32, and then the second FRP reinforcement body 32 is formed. A second reinforcing body glass mat is placed on the second reinforcing body lower mold (FIG. 1). The second reinforcing body lower mold has a substantially convex cross section perpendicular to the longitudinal direction of the lower mold. Next, a resin liquid is applied and impregnated on the second reinforcing body glass mat, and then the impregnated resin liquid is semi-dried to form a resin portion. As the glass mat for the second reinforcing body and the resin of the resin liquid, the same ones as described in the above (1-a) are used. Further, the second reinforcing glass mat and the resin portion are obtained by repeating the covering step of the second reinforcing glass mat, the impregnation step of the resin liquid, and the semi-drying step of the resin liquid twice or three times or more. A semi-dry second FRP reinforcing body 32 having a structure in which is laminated is obtained (FIGS. 5 and 6).

(2-e) Adhesion of the second FRP reinforcement 32 to the first deflector body 21 The semi-dry second FRP reinforcement 32 is pressed against the curved surface of the back surface of the semi-dry first deflector body 21. At this time, since the tip edge of the second reinforcing member side piece 32b of the second FRP reinforcing member 32 is formed in a shape corresponding to the curved surface of the back surface of the first deflector body 21, the second FRP reinforcing member 32 is hardly deformed. The second FRP reinforcement 32 can be temporarily fixed to the back surface of the first deflector body 21 by the adhesive force of the dry resin portion, and the second FRP reinforcement 32 is not separated from the first deflector body 21. In this state, the second FRP reinforcing body 32 is bonded to the back surface of the first deflector body 21 using the second bonding FRP sheet 42 (FIG. 6). Specifically, the second adhesive glass mat is covered from the outer surface of the second FRP reinforcing body 32 to the rear surface of the first deflector body 21, and after applying and impregnating a resin liquid to the second adhesive glass mat, the resin The liquid is semi-dried to form a resin part. As the second bonding glass mat and the resin liquid resin, the same ones as described in the above (1-a) are used. The covering step of the second bonding glass mat, the impregnation step of the resin solution, and the semi-drying step of the resin solution are repeated twice or three times or more. As a result, a second bonding FRP sheet 42 for bonding the second FRP reinforcing body 32 to the back surface of the first deflector body 21 is formed.

  In the first deflector 11 thus manufactured, the front portion of the first deflector body 21 has a curved surface protruding outward, and the first FRP reinforcing body 31 is bonded to the front rear surface of the first deflector body 21. Since the height of the 1st reinforcement body side piece 31b of the rear part of the 1st FRP reinforcement 31 was made high at this time, the rigidity of the 1st deflector main body 21 of this part can be improved. The first deflector body 21 has a curved surface projecting outward after projecting from the center to the rear, and the second FRP reinforcing body 32 is bonded to the back surface of the first deflector body 21. At this time, since the height of the second reinforcing body side piece 32b at the center in the longitudinal direction of the second FRP reinforcing body 32 is increased, the rigidity of the second deflector body 21 at this portion can be improved. That is, the first and second reinforcing bodies which are relatively inexpensive general-purpose types without using the upper molds for the first and second reinforcing bodies as the molds for producing the first and second FRP reinforcing bodies 31 and 32. Even if only the lower mold is used, the heights of the first and second reinforcing body side pieces 31b and 32b of the first and second FRP reinforcing bodies 31 and 32 can be easily changed. The 1st and 2nd FRP reinforcement bodies 31 and 32 can each be produced, and the 1st deflector 21 which has optimal intensity | strength without excess and deficiency in the intensity | strength of each part is obtained. Furthermore, since the rear part of the first FRP reinforcing body 31 and the front part of the second FRP reinforcing body 32 are smoothly connected, it is possible to prevent stress concentration from occurring at the connecting part between the first FRP reinforcing body 31 and the second FRP reinforcing body 32. it can.

In the above embodiment, the glass mat for the reinforcing body was manufactured by cutting the glass mat in accordance with the developed shape of the FRP reinforcing body before covering the lower mat for the reinforcing body with the glass mat for the reinforcing body. As shown in FIG. 8, the glass mat is covered with the reinforcing body lower mold 18 in a substantially rectangular state without cutting to match the developed shape of the FRP reinforcing body 56, and the covering process of the glass mat is performed in the same manner as in the above embodiment. The impregnation process of the resin liquid and the semi-drying process of the resin liquid were repeated twice or three times or more to produce an untreated FRP reinforcing body 56 in which the side edge of the semi-drying reinforcing body side piece 56b was not cut. Later, the tip edges of the pair of reinforcing body side pieces 56b of the semi-dry FRP reinforcing body 56 may be cut in accordance with the curved surface of the second deflector. 8, the same reference numerals as those in FIG. 1 denote the same parts.
In the above embodiment, the FRP sheet for bonding is used to bond the FRP reinforcing body to the back surface of the second deflector body, and the first and second FRP reinforcing bodies are used to bond the back surface of the first deflector body. Although the FRP sheet for 1st and 2nd adhesion | attachment was used, respectively, you may adhere | attach with an adhesive agent, without using these FRP sheets.
Further, in the above embodiment, the first and second deflector bodies provided on the roof panel of the tractor cab are cited as the FRP molded body. However, if the plate-shaped FRP molded body has a curved surface, the bus engine It may be a hood or a front panel of a bus.

It is a perspective view which shows the manufacture process of the FRP reinforcement body for reinforcing the deflector main body of the window deflector made from FRP of this invention embodiment. It is the sectional view on the AA line of FIG. It is the principal part perspective view which looked at the deflector main body reinforced with the FRP reinforcement body of this invention from the back side. FIG. 4 is a sectional view taken along line BB in FIG. 3. It is CC sectional view taken on the line of FIG. It is the principal part perspective view which looked at the 1st deflector main body reinforced with the 1st and 2nd FRP reinforcement body of this invention from the back side. It is a perspective view of the tractor containing the cab to which the wind deflector was attached. It is process drawing which shows the process of manufacturing the FRP reinforcement body of another embodiment of this invention. It is a perspective view which shows the manufacturing process of the FRP reinforcement body corresponding to FIG. 1 which shows a prior art example. FIG. 10 is a sectional view taken along line D-D in FIG. 9. It is the principal part perspective view which looked at the deflector main body reinforced with the conventional FRP reinforcement body from the back side. It is the EE sectional view taken on the line of FIG. It is sectional drawing corresponding to FIG. 5 which shows a prior art example. It is the principal part perspective view which looked at the 1st deflector main body reinforced with the conventional 1st and 2nd FRP reinforcement body from the back side.

Explanation of symbols

16, 56 FRP reinforcing body 16a Reinforcing body main part 16b Reinforcing body side piece 16c Glass mat for reinforcing body 18 Lower mold for reinforcing body 21 First deflector body (first FRP molded body)
22 Second deflector body (second FRP molded body)
31 1st FRP reinforcing body 32 2nd FRP reinforcing body

Claims (3)

An FRP molded body (21, 22) molded into a plate shape having a curved surface, and a cross section extending in a predetermined direction along the curved surface and perpendicular to the longitudinal direction on the curved surface of the FRP molded body (21, 22). In the reinforcing structure of the FRP molded body comprising the FRP molded body (21, 22) and the FRP reinforcing body (16, 31, 32, 56) formed in a closed cross section,
The FRP reinforcing body (16, 31, 32, 56) has a reinforcing body main part (16a, 31a, 32a) formed in a flat band shape, and one side edge of the reinforcing body main part (16a, 31a, 32a) A pair of reinforcing body side pieces (16b, 31b, 32b, 56b) that are respectively connected to both side edges of the FRP molded body, and the other side edges are formed along curves along the curved surface of the FRP molded body (21, 22). Reinforced structure of the FRP molded product as a feature. A glass mat for reinforcing body (16c) by cutting the glass mat in accordance with the developed shape of the FRP reinforcing body (16, 31, 32) for reinforcing the FRP molded body (21, 22) formed into a plate shape having a curved surface. )
Covering the predetermined reinforcing body lower mold (18) for forming the FRP reinforcing body (16, 31, 32) with the reinforcing body glass mat (16c);
Applying and impregnating a resin liquid to the reinforcing body glass mat (16c);
Semi-drying the impregnated resin liquid;
Semi-drying FRP reinforcing body (16, 31, 32) by repeating the covering step of the glass mat (16c) for reinforcing body, the impregnation step of the resin liquid, and the semi-drying step of the resin liquid twice or three times or more A step of producing
A method of manufacturing a reinforcing structure of an FRP molded body, including a step of pressing the semi-dry FRP reinforcing body (16, 31, 32) against a curved surface of the FRP molded body (21, 22). Covering the predetermined reinforcing body lower mold (18) for forming the FRP reinforcing body (56) with the reinforcing body glass mat;
Applying and impregnating a resin liquid to the reinforcing body glass mat;
Semi-drying the impregnated resin liquid;
The step of covering the reinforcing body glass mat, the step of impregnating the resin solution, and the step of semi-drying the resin solution are repeated twice or three times to produce a semi-dry FRP reinforcement (56);
Cutting the edge of the pair of reinforcing body side pieces (56b) of the semi-dry FRP reinforcing body (56) according to the curved surface of the FRP molded body;
Pressing the FRP reinforcing body against the curved surface of the FRP molded body.

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