JP2009035045A - Frp automobile member - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a structure of a metal part mounting portion capable of easily, surely and strongly mounting a mounting metal part on a FRP (fiber-reinforced resin) automobile member by adhesion. <P>SOLUTION: This FRP automobile member is mounted with at least one metal part. The mounting surface of the metal part on the FRP member is formed to an uneven step structure. The metal part is adhered to the FRP member by imparting adhesive to a recessed part of the step structure. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention relates to an FRP (fiber reinforced resin) automobile member, and more particularly, to a structure of a metal part mounting portion of an FRP automobile member to which a metal part is attached.

  In recent years, FRP automobile members (for example, FRP panel members) are being developed for the first purpose of weight reduction, and various structures for improving the strength and rigidity of necessary parts have also been proposed ( For example, Patent Document 1). Among these, from the viewpoint of improving strength and rigidity, an automobile member made of CFRP (carbon fiber reinforced resin) is being studied.

  Metal parts may be attached to FRP automobile members as necessary. For example, as shown in FIG. 4, when the FRP automobile member is an automobile hood 101, the hinge mounting bracket 102 and the striker 103 as metal parts are used for the opening / closing operation of the hood 1 and the locking operation at the time of opening / closing. It is attached. When such an FRP automobile hood 101 is composed of an FRP outer member 104 and an FRP inner member 105 as shown in FIG. 5, for example, the metal part 102 and the like are bonded to each other by an adhesive 106. Often attached to member 105.

  As described above, when the metal part 102 is bonded to the FRP hood 101 (FRP inner member 105), the adhesion control is performed by bleed out or by thickness control using glass beads or the like. The method of controlling the adhesive thickness (thickness of the adhesive layer) cannot be controlled, and the method of controlling the adhesive thickness with the glass beads 107 as shown in FIG. Therefore, it is often difficult to manage to a desired adhesion state, and eventually there has been no reliable method for controlling the adhesion thickness.

On the other hand, in the case of a metal hood, metal parts are mainly attached by spot welding, and are not attached by an adhesive. Conversely, spot welding is not possible with an FRP hood. There was no suitable mounting method.
JP 2003-146252 A

  Therefore, in view of the above situation, the object of the present invention is to provide a structure of a metal part mounting portion that can easily and securely attach a metal part to an FRP automobile member by adhesion. It is to provide.

  In order to solve the above-described problems, an FRP automobile member according to the present invention is an FRP automobile member to which at least one metal part is attached, and is an FRP member (here, “FRP member”) of a metal part. Is an FRP automobile member itself or a constituent member of an FRP automobile member.) The mounting surface is formed in an uneven step structure, and an adhesive is applied to the recess portion of the step structure to form a metal part. It consists of what is adhere | attached on the FRP member. Here, the “concave uneven structure” refers to a structure in which a structure having a step having a concave portion and a convex portion is intentionally provided on the mounting surface portion of the metal part, not a micro uneven surface having a surface roughness level. .

  In such an FRP automobile member according to the present invention, the convex portion of the uneven step structure formed on the mounting surface of the metal component is brought into contact with the FRP member, and the metal component mounting surface of the FRP member in the concave portion A reference plane that defines the height from the metal plate, whereby the distance between the recess and the metal component mounting surface of the FRP member (ie, the height of the recess from the metal component mounting surface of the FRP member) is the desired dimension. In the meantime, an adhesive is applied, and the metal part is bonded to the FRP member by the adhesive. Since the adhesive is interposed between the recess and the metal part mounting surface of the FRP member, which is accurately determined in the desired dimensions, the thickness of the adhesive (adhesion thickness) can be accurately determined without variation. The dimensions will be determined reliably. By securely determining the desired thickness of the adhesive thickness to a desired dimension, it is possible to easily and reliably achieve a strong adhesion of the target metal part.

  In the present invention, examples of the FRP automobile member include a panel member configured in a panel shape. More specifically, panel members such as an FRP hood, a trunk lid, a door panel, a roof panel, a floor panel, a tunnel panel, and a fender panel can be used. Further, structurally, the present invention can be applied as a structure in which the panel member includes an FRP outer member and an FRP inner member, and the metal component is attached to the inner member. Such a structure is particularly suitable for FRP automobile hoods that require attachment of metal parts such as hinge mounting brackets and strikers.

  In the FRP automobile member according to the present invention, it is preferable that the difference in height between the concave portion and the convex portion in the step structure is set in a range of 0.2 to 1.0 mm. If the thickness is less than 0.2 mm, the amount of the adhesive may be insufficient and the adhesive strength may be insufficient. If the thickness exceeds 1.0 mm, the amount of the adhesive may be excessively increased, which is disadvantageous in terms of cost and weight. is there.

  Moreover, it is preferable that the top part of the convex part of the level | step difference structure in the said metal part is formed in the surface shape (For example, the surface shape which follows the attachment surface of the other party FRP member). In this way, the height of the recess can be determined to a desired height more reliably and accurately, and a desired adhesive thickness can be realized with higher accuracy.

  Moreover, the structure by which the mechanical fastening means with the said FRP member is provided in the convex part of the level | step difference structure in the said metal component is also employable. If such a mechanical fastening means is provided, the metal part can be fixed to the FRP member by fastening with the mechanical fastening means in addition to the adhesion by the adhesive, so that a stronger attachment is possible. As such a mechanical fastening means, for example, a bolt fastening means can be adopted. Further, when a bolt fastening means is employed, it is possible to adopt a structure in which an insert nut is press-fitted into the convex portion of the step structure in the metal part.

  Further, in the FRP automobile member according to the present invention, a concave portion is formed on the mounting surface of the metal component of the member, and the convex portion of the step structure in the metal component is fitted in the concave portion. It can also be. In such a structure, the metal part can be easily positioned with respect to the FRP member by the fitting structure, so that the attachment of the metal part to a predetermined position is further facilitated.

  As described above, according to the FRP automobile member according to the present invention, a metal part can be attached to a predetermined FRP member by bonding and fixing with a desirable adhesive thickness without variation, and thus a strong metal Parts can be easily and reliably attached.

Hereinafter, preferred embodiments of the present invention will be described with reference to the drawings.
FIG. 1 shows the structure of a metal part mounting portion of an FRP automobile member according to an embodiment of the present invention. In particular, the inner member of the FRP automobile hood as shown in FIG. The case where components are attached is illustrated. In FIG. 1, reference numeral 1 denotes an FRP inner member of an FRP automobile hood as an FRP member to which a metal part is attached. A metal part 2 is attached to a predetermined portion of the FRP inner member 1. As the metal part 2, for example, as described above, a hinge mounting bracket or a striker is used.

  The attachment surface 3 of the metal component 2 to the inner member 1 is formed in a step structure having alternately concave portions 4 and convex portions 5. This level difference is set to a predetermined value within a range of 0.2 to 1.0 mm, for example, and the top surface of the convex portion 5 formed in a flat shape is brought into contact with the inner member 1 and each concave portion 4. The height of the inner member 1 from the mounting surface 6 of the metal part 2 is maintained at the predetermined value. An adhesive 7 is applied to each recess 4 in the mounting surface 3 of the metal part 2 configured in this step structure to the inner member 1, and the metal part 2 adheres to the inner member 1 through the adhesive 7. Has been. In this embodiment, bolt fastening means 8 as mechanical fastening means is also provided, and the convex portion 5 on the attachment surface 3 of the metal component 2 to the inner member 1 is bolted to the inner member 1.

  In the structure according to the above embodiment, the height of the recess 4 from the mounting surface 6 of the metal part 2 of the inner member 1 in the mounting surface 3 of the metal part 2 to the inner member 1 formed in the uneven step structure is simply The predetermined value can be easily determined with high accuracy simply by bringing the convex portion 5 of the metal part 2 into contact with the mounting surface 6 of the inner member 1. If a predetermined amount of adhesive 7 is applied to each recess 4, the thickness of the adhesive 7 can be automatically controlled to a desired thickness at the time of contact, and the metal component 2 can be easily attached to the inner member 1 with the desired adhesive thickness. It will be glued to. By securely controlling the adhesive thickness to a desired thickness with high accuracy, the metal component 2 can be securely attached and attached. Moreover, in the said embodiment, since the fixation by the bolt fastening means 8 is also added, still stronger attachment is possible.

  FIG. 2 shows a modification of the structure of the metal part mounting portion of the FRP automobile member shown in FIG. In this embodiment, the insert nut 11 is press-fitted in advance into the convex portion 5 of the attachment surface 3 of the metal component 2 to the inner member 1, and the bolt 12 is screwed into the insert nut 11, whereby the metal component Two convex portions 5 are fastened to the inner member 1. Other configurations are in accordance with the embodiment shown in FIG. In this manner, by inserting the insert nut 11 in advance, the bolt can be fastened very easily.

  FIG. 3 shows a structure of a metal part mounting portion of an FRP automobile member according to another embodiment of the present invention. In the present embodiment, the metal part 22 is attached to a predetermined portion of the FRP inner member 21, and the attachment surface 23 of the metal part 22 to the inner member 21 has a step structure in which the concave parts 24 and the convex parts 25 are alternately arranged. Is formed. A concave portion 27 is formed on the mounting surface 26 of the metal component 22 of the inner member 21, and a convex portion 25 having a step structure in the metal component 22 is fitted into the concave portion 27. That is, the fitting part 28 in which the convex part 25 of the step structure in the metal part 22 and the concave part 27 in the mounting surface 26 of the metal part 22 of the inner member 21 are fitted to each other is formed. By providing such a fitting portion 28, the metal component 22 can be easily positioned with respect to the inner member 21, and the metal component 22 can be more easily attached to a predetermined position. Regarding the thickness control of the adhesive 29, the same effect as that shown in FIG. 1 can be obtained, and the above-described positioning can be facilitated and the firm adhesion and fixing can be reliably achieved.

  In addition, although illustration is abbreviate | omitted, as a FRP member structure of the member for FRP made from FRP which becomes the application object of this invention, it has a core material with small specific gravity as well as the thing of the single plate structure made from FRP, for example. Further, a member configuration in which an FRP plate is disposed on one side thereof, or a member configuration (so-called sandwich configuration) in which an FRP plate is disposed on both sides thereof may be employed. In such a configuration, the adhesive attachment structure in the present invention as described above may be applied to these FRP plates.

  In addition, FRP (fiber reinforced resin) in the FRP automobile member according to the present invention refers to a resin reinforced with reinforced fibers. As the reinforced fibers, for example, inorganic fibers such as glass fibers, It is also possible to use reinforcing fibers made of organic fibers such as Kevlar fibers, polyethylene fibers, polyamide fibers, boron fibers, and PBO fibers. Carbon fiber is particularly preferable from the viewpoint of easy control of rigidity and the like of the molded part for automobiles. Examples of the matrix resin of FRP include thermosetting resins such as epoxy resins, unsaturated polyester resins, vinyl ester resins, phenol resins, dicyclopentadiene resins, polyurethane resins, and further, polyamide resins, polyolefin resins, Thermoplastic resins such as polypropylene resin can also be used. Moreover, as a material of the core material in the case of having the core material as described above, an elastic body, a foam material, and a honeycomb material can be used, and a foam material is particularly preferable for weight reduction. The material of the foam material is not particularly limited, and for example, a foam material of a polymer material such as polyurethane, acrylic, polystyrene, polyimide, vinyl chloride, or phenol can be used. The honeycomb material is not particularly limited, and for example, aluminum alloy, paper, aramid paper or the like can be used.

  The structure of the FRP automobile member according to the present invention is applicable to any FRP automobile member to which metal parts are attached.

It is a schematic sectional drawing of the metal component attachment part of the member for automobiles made from FRP which concerns on one embodiment of this invention. It is a schematic sectional drawing of the metal component attachment part of the member for automobiles made from FRP which concerns on the modification of FIG. It is a schematic sectional drawing of the metal component attachment part of the member made from FRP which concerns on another embodiment of this invention. It is a schematic plan view which shows the example of attachment of a metal component in case the member for FRP motor vehicles is the hood of a motor vehicle. It is the schematic cross-sectional view which followed the AA line of the food | hood of FIG. 4 which illustrated the conventional metal component attachment structure. It is a general | schematic expanded sectional view of the metal component attachment part which illustrated another conventional metal component attachment structure.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 FRP inner member of FRP automobile hood 2 Metal part 3 Mounting surface of metal part to inner member 4 Recess 5 Protruding part 6 Mounting surface of inner member of metal part 7 Adhesive 8 Bolt fastening means 11 Insert nut 12 Bolt 21 FRP inner member 22 Metal part 23 Mounting surface 24 of metal part to inner member 24 Recess 25 Convex part 26 Mounting surface 27 of inner member metal part 27 Recess 28 on metal part mounting surface of inner member Fitting part 29 Adhesive

Claims (10)

  An FRP automobile member to which at least one metal part is attached, wherein the mounting surface of the metal part to the FRP member is formed in an uneven step structure, and an adhesive is applied to the recess of the step structure to form the metal part. An FRP automobile member characterized by being bonded to an FRP member.   The FRP automobile member according to claim 1, wherein the FRP automobile member is a panel member.   The FRP automobile member according to claim 2, wherein the panel member includes an FRP outer member and an FRP inner member, and the metal part is attached to the inner member.   The FRP automobile member according to claim 3, comprising an automobile hood.   The FRP automobile member according to any one of claims 1 to 4, wherein a difference in height between the concave portion and the convex structure in the step structure is set in a range of 0.2 to 1.0 mm.   The FRP automobile member according to any one of claims 1 to 5, wherein a top portion of the convex portion of the step structure in the metal part is formed in a surface shape.   The FRP automobile member according to any one of claims 1 to 6, wherein a mechanical fastening means with the FRP member is provided on a convex portion of the step structure in the metal part.   The FRP automobile member according to claim 7, wherein the mechanical fastening means comprises bolt fastening means.   The FRP automobile member according to claim 8, wherein an insert nut is press-fitted into a convex portion of the step structure in the metal part.   The recessed part is formed in the attachment surface of the said metal component of the said FRP member, The convex part of the level | step difference structure in the said metal component is fitted by this recessed part, The one in any one of Claims 1-9 FRP automotive parts.

Images