JP2008201194A - Outer board panel component for automobile, method for using outer panel component for automobile, and hood for automobile - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an outer board panel component for an automobile made of a fiber reinforced resin superior in weight and rigidity that is capable of inexpensively achieving a surface excellent in design appearance. <P>SOLUTION: In the outer board panel component of an automobile, a structural body comprises an outer member composed of an outer surface including a surface of at least 2,500 cm<SP>2</SP>or more and with the maximum cross section of the surface having 50 mm or more radius of curvature, and an inner member having a portion disposed along an outer peripheral part of the outer member. The outer member is made of a resin and the inner member includes a portion composed of a carbon fiber reinforced resin. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to an automotive outer panel component using a fiber reinforced resin (hereinafter referred to as FRP), and relates to a structure that has necessary rigidity, strength, and lightness, and that can have both high appearance quality and excellent cost. .

  In recent years, all structures such as buildings, transportation equipment, and information equipment have been strongly demanded to be lightweight in addition to rigidity and strength, and further, high appearance quality is required in order to improve merchantability. It has come to be. Especially in transportation equipment, it is expected that energy consumption will be significantly reduced by reducing the weight, so it will be a great merit to achieve lightness as well as rigidity and strength. Is required.

  In the field of transportation equipment, especially in automobiles, it has a performance that appeals directly to consumers, so in addition to rigidity / strength / lightweight, it must have high appearance quality, specifically a Class A appearance. In order to obtain this performance, various research and development have been conducted.

  In response to these requirements, for example, Patent Document 1 discloses means for making a hood made of carbon fiber reinforced resin (hereinafter also referred to as “CFRP”) as an automobile outer plate part. In the present technology, the outer and inner that form the outer surface are made of CFRP, and have high rigidity and strength, and can obtain excellent lightness.

  However, when the outer is made of CFRP, surface irregularities unique to CFRP, bubbles on the CFRP molded surface, misalignment of crosses, and the like are generated, and the appearance quality is lowered. In order to improve this and achieve a Class A appearance, surface polishing is required, and it is necessary to fill bubbles by applying a primer, etc., and to polish manually using sandpaper etc. The primer application increases the weight and reduces the lightness of CFRP, and the manufacturing cost increases due to repeated manual painting and polishing, resulting in a decrease in the value of the product.

  Further, in recent years, all-aluminum parts have been adopted as outer panel panels for automobiles in order to reduce weight. Aluminum has a density of about 1/3 compared to steel and can be expected to be light. In the case of aluminum parts, the same good appearance quality as conventional steel can be obtained, but the specific rigidity and specific strength are inferior to those of CFRP, so the weight reduction effect is lower than that of CFRP. End up.

  Further, in recent years, panel members for automobile outer plates having an external appearance quality made of resin are becoming popular. When such a configuration is adopted, a large weight reduction effect can be expected as compared with a panel member having a metal outer member, but the inner member which is an internal structure is still made of metal typified by steel and made of CFRP. The merit of weight reduction is low compared to.

In addition, the inner member, which is the internal structure, can also be made of resin, and both the outer member and the inner member can be made of resin. However, since the rigidity of the resin itself is low, in order to obtain the required rigidity, as a result It has to be a meat structure and has not yet achieved a sufficient lightening effect.
JP 2002-284038 A

  SUMMARY OF THE INVENTION Accordingly, an object of the present invention is to provide an automotive skin panel component that can satisfy high structural quality, light weight, and low cost as well as structural requirements such as rigidity and strength required for the automotive skin panel component. The present invention provides a method for using an automotive outer panel component that uses the door in places where an opening / closing mechanism is required, and an automobile hood using the same.

In order to solve the above-described problems, an automotive outer panel component according to the present invention has the following configuration. (1) An outer member that is composed of a surface of at least 2500 cm ² and has an outer surface with a maximum cross-sectional radius of 50 mm or more, and a stiffener structure in a shape along the outer peripheral edge of the outer member A structure composed of an inner member having a section with a cross section, wherein the outer member is made of resin, and the inner member has a portion made of carbon fiber reinforced resin. Board panel parts.

  (2) The automotive outer panel component according to (1), wherein a hemming-bending undercut portion is provided at an outer peripheral edge of the outer member.

  (3) The outer panel member for an automobile outer plate according to (1) or (2), wherein the outer member is made of a short fiber reinforced resin.

  (4) The panel member for an automobile outer plate according to (1) or (2), wherein the outer member is made of a nanocomposite resin.

(5) An outer member that is composed of at least a surface of 2500 cm ² or more and that has an outer surface with a radius of a maximum cross section of 50 mm or more, and a stiffener shape so as to follow the outer peripheral edge of the outer member. A structure composed of an inner member having a section with a cross section, wherein the outer member is made of metal and the inner member has a portion made of carbon fiber reinforced resin. Board panel parts.

  (6) The automotive outer panel component according to any one of (1) to (5), wherein an inner member having a hat-shaped cross-section stiffener is used.

  (7) The outer panel panel component for an automobile according to any one of (1) to (6), wherein an inner member is disposed on the entire outer edge of the outer member.

(8) the inner member metal fastening member is installed in, and being attached to the motor vehicle side via the metal fastening member (1) to according to any one of (7) Automotive outer panel components.

  (9) The automotive outer panel component according to any one of (1) to (8), wherein at least three metal fastening members are provided.

  (10) The automotive outer panel component according to any one of (1) to (9), wherein a metal fastening member is provided on an outer periphery of the automotive outer panel component.

  (11) Any one of (1) to (10), wherein a rotation mechanism is provided through a metal fastening portion, and the outer panel member for automobile is rotated through the rotation mechanism. The automotive outer panel component described in the above.

  (12) The automotive outer panel component according to any one of (8) to (11), wherein the metal fastening member has a key-like hook mechanism.

  (13) The automotive outer panel component according to any one of (8) to (12), wherein the metal fastening member has a U-shaped hooked mechanism.

  (14) The outer panel member for automobile according to any one of (1) to (13), wherein the outer member and the inner member are integrated via an adhesive layer.

  (15) The outer part for an automobile according to any one of (1) to (14), wherein the portion of the inner member disposed along the outer edge of the outer member is substantially made of carbon fiber reinforced resin. Board panel parts.

  (16) The exterior for automobiles according to any one of (1) to (15), wherein the outer member of the inner member has a portion made of a metal other than the portion disposed along the outer edge portion of the outer member. Board panel parts.

  (17) The automotive outer panel component according to (16), wherein the outer plate panel component for an automobile according to (16) has a portion made of an aluminum alloy except for the portion arranged along the outer edge portion of the outer member of the inner member.

  (18) The outer panel panel component for an automobile according to any one of (1) to (17), wherein a fiber length of the carbon fiber used for the inner member is 20 mm or more.

  (19) A method of using an automotive outer panel component according to any one of (1) to (18), wherein the automotive outer panel component is used at a location requiring an opening / closing function.

  (20) An automotive hood in which the automotive outer panel component according to any one of (1) to (18) is used in part or in whole.

  According to the automotive outer panel component according to the present invention, by using a resin for the outer member, a high appearance is achieved, and by making the inner member a carbon fiber reinforced resin, high rigidity and light weight are achieved. Since it is obtained, excellent product performance can be obtained as a panel component for an automobile outer plate.

  Further, according to the present invention, the outer member can be made of metal, and although the weight is inferior to that of the resin outer member, high appearance performance can be obtained as compared with the resin. The material of the outer member can be selected in consideration of the appearance performance and weight required for each part.

  Moreover, although the inner member is made of carbon fiber reinforced resin, it can be partially made of metal if necessary.

Also, all inner members of the outer edge of the outer member are all made of carbon fiber reinforced resin, and other internal structures and parts that are difficult to mold and costly are supplemented with metal inner members. Thus, it becomes possible to manufacture parts at a low cost while obtaining the required strength and rigidity.
Further, by applying the automotive outer panel component according to the present invention to a part having an opening / closing mechanism, and particularly to an automotive hood, high appearance and high rigidity and light weight are achieved as a product. This greatly contributes to the improvement of opening / closing operability and the weight reduction of the entire vehicle.

The automotive outer panel component according to the present invention is characterized by having a surface of at least 2500 cm ² or more. Thereby, when the structure prescribed | regulated to this invention is used, the weight reduction effect as components is exhibited. From this viewpoint, it is preferable to have at least 5000 cm ² or more surfaces, and more preferably at least 10000 cm ² or more surfaces. In view of maintaining good product productivity and suppressing an increase in manufacturing cost, it is preferably 40000 cm ² or less.

  An automotive outer panel component according to the present invention includes an outer member constituting an outer surface having a maximum cross-section radius of 50 mm or more, and a portion in which a stiffener structure cross-section is arranged in a shape along an outer peripheral edge of the outer member. It is a structure comprised from the inner member which has.

  The radius of the maximum cross section of the outer surface of the outer member is measured by electronic data consisting of a set of points on the outer surface measured using an R gauge or a three-dimensional measuring machine. Therefore, it has an appropriate radius as an automobile part, and a good outer panel part can be configured. From such a viewpoint, the radius is preferably 100 mm or more, and more preferably 2000 mm or more. In consideration of satisfying the firmness of the feeling of feeling when the outer surface of the outer member is pressed, the thickness is desirably 10,000 mm or less.

  It is essential that the inner member has a portion in which the stiffener structure cross section is arranged in a shape along the outer peripheral edge of the outer member. Here, the shape along the outer peripheral edge of the outer member means the entire circumference of the outer member. That is, the stiffener structure cross section is arranged in a shape along the outer peripheral edge of the outer member means that the inner member having the stiffener structure cross section is arranged over the entire circumference of the end of the outer member. Means. By having a portion in which such a stiffener structure cross section is disposed, it is possible to achieve both the rigidity performance as a hood and the light weight most efficiently.

  The outer member constituting the present invention is made of resin, spreads across the entire structure in the surface direction, and is formed in a necessary curved surface or linear shape depending on the design and application. The inner member has a CFRP part, is in contact with the back surface of the outer member, and shares the overall rigidity of the structure. The metal fastening member is attached to the inside of the inner member, and is used for attachment of other parts or a rotation mechanism. By adopting such a configuration, in addition to high appearance quality by the resin outer member, high rigidity, strength and light weight by the CFRP inner member are achieved, and the function of attaching this part to the vehicle is satisfied. Thus, it becomes possible to obtain an excellent product having these necessary characteristics.

  Here, as the resin used for the outer member, mature resin such as epoxy resin, unsaturated polyester resin, vinyl ester resin, phenol resin, mature plastic resin such as polyamide resin, polyolefin resin, dicyclopentadiene resin, polyurethane resin, etc. Among these, epoxy resins, unsaturated polyester resins, and vinyl ester resins are preferably used because they are excellent in productivity, material strength, and rigidity characteristics.

  In addition, the term “resin” as used herein includes a fiber reinforced resin reinforced with long fibers and short fibers. Examples of the reinforcing fibers include carbon fibers, glass fibers and other inorganic fibers, Kevlar fibers, polyethylene fibers, and polyamides. Examples thereof include organic fibers such as fibers and PBO fibers. Among these, carbon fibers are preferably used in terms of improving the rigidity and strength most efficiently.

  It is preferable that the outer member used for the outer panel panel component for automobiles of the present invention is provided with an undercut portion having a hemming bending shape at an outer peripheral end edge thereof. The undercut portion of the hemming bend shape is provided at the outer peripheral end edge of the outer member means that the outer member end portion is disposed so as to wrap around the inner member end portion and the inner end portion is covered. Means that

  It is preferable that the outer member used for the panel component for automobile outer plates of the present invention is made of a short fiber reinforced resin. As a result, the rigidity and surface rigidity of the outer member are reinforced, and a stronger automotive outer panel component can be obtained. The term “short fiber” as used herein means a fiber having a fiber length of 15 mm or less, and means that the rigidity and surface rigidity of the outer member are strengthened, and that the panel member for an automobile outer plate to be obtained is made stronger. In consideration, the fiber length is preferably 0.02 to 15 mm, more preferably 2.5 to 11 mm.

  Moreover, it is also preferable that the outer member used for the panel component for motor vehicle outer panels of this invention is a product made from nanocomposite resin. Thereby, together with the member rigidity and surface rigidity of the outer member, the appearance surface quality equivalent to that produced by the resin alone is ensured, and a panel part for an automobile outer plate having higher commercial value can be obtained. The nanocomposite resin here means a resin to which a nano-sized filler is added, and a resin to which at least an inorganic component such as clay or synthetic mica is added as a filler is preferably used. Furthermore, even if the outer member used for the panel component for an automobile outer plate of the present invention is made of a resin obtained by adding the short fiber reinforcement and the nano-sized filler, the short fiber reinforcement resin and the It may be made of a resin obtained by blending nanocomposite resins.

  The outer member used for the panel component for an automobile outer plate of the present invention can be made of metal, and preferably made of aluminum alloy. This is because although the weight tends to increase as compared with the resin outer member, the outer member can be made of metal, so that a higher appearance quality than that of the resin can be obtained. Therefore, regarding the material selection of the outer member, considering the required appearance quality, weight, and cost, select the most suitable material for each product from the above options, and make it the best product Can do.

  It is preferable that the stiffener of the inner member used in the panel member for an automobile outer plate of the present invention has a hat-shaped cross section. This is to enhance the effect of the inner member as a stiffener, that is, the effect that it is possible to achieve both the rigidity performance and the light weight as the hood most efficiently. The hat-shaped cross section represents a cross-sectional shape necessary for forming a trapezoidal or rectangular cross section on a certain original flat plate, and has a finite dimension provided at a distance from the original flat plate. It means that it has at least two slopes extending from the end portion toward the original flat plate at an angle of 0 to 90 ° until it comes into contact with the original flat plate.

  It is preferable that the inner member used for the panel component for an automobile outer plate of the present invention is disposed on the entire edge of the outer peripheral end portion of the outer member as shown in FIG. This is because the structural rigidity can be obtained most efficiently by enclosing the entire circumference of the outer member end portion with the inner member.

  It is preferable that the inner member used for the vehicle exterior panel component of the present invention is attached to the vehicle side via a metal fastening member. This is because a stronger mounting structure is realized by mounting via a metal fastening member. “Attaching via a metal fastening member” here means attaching a panel component for an automobile outer plate to a vehicle using the metal fastening member, and can be attached by a method such as bolts, nuts, or adhesion. In addition, the automobile vehicle side means both ends of the automobile when a line perpendicular to the traveling direction of the automobile is extended in a horizontal plane.

  It is preferable that at least three or more metal fastening members are provided in the automotive exterior panel panel component according to the present invention. This is to stably support the planar part. In order to achieve this configuration, for example, the metal fastening members are arranged at least at three locations between the inner member and the automobile vehicle side, and the inner member is attached to the automobile vehicle side via the metal fastening member. Can be achieved.

  Moreover, it is more preferable that the metal fastening component is provided on the outer peripheral portion of the automotive outer panel member according to the present invention. This is because it is possible to support the component more stably by arranging the fastening portion on the outer periphery.

  The panel member for an automotive skin panel of the present invention is provided with a rotation mechanism through the metal fastening part, and the automotive skin panel component according to the present invention is configured to rotate through the rotation mechanism. preferable. This is because by providing a rotation mechanism from the outside, high rotational characteristics can be obtained in combination with high strength, rigidity and light weight of the parts.

  It is preferable that the metal fastening part used for the automotive exterior panel panel part of the present invention has a key-like hook mechanism or a U-shaped hooked mechanism. This is because the provision of the hook operating mechanism makes it possible to apply the present part to a location that is frequently opened and closed, thereby improving the value of the part.

  It is preferable that the outer member and the inner member used in the automotive exterior panel panel component of the present invention are integrated via an adhesive layer. As fastening means other than the adhesive layer, a method of insert-molding an insert nut into an outer member or an inner member to form a bolt fastening structure, rivet joining using an adhesive together with an adhesive, etc. Bonding through the adhesive layer can maximize the bonding area, and bolts, rivets, etc. expose the bonding part on the outer member surface, so there is no effect on the outer surface and appearance quality Is preferably used because it is the most excellent.

  It is preferable that substantially all the portions installed along the outer member outer edge portion of the inner member used in the automotive outer panel panel component of the present invention are made of CFRP. This is the portion that is arranged along the outer edge of the outer member of the inner member, the portion that contributes the most to the structural rigidity of the panel parts for automobile outer panels, and this is the CFRP with the highest specific rigidity and specific strength. It is because it can be set as the panel component most excellent in rigidity and lightweight by making it. However, as long as this purpose is not impaired, there is no problem even if there is a part (for example, 25% or less of the area of the part installed along the outer edge of the outer member of the inner member) that is not made of CFRP. The smaller the proportion of the non-occupied portion, the better. It is most preferable that 100% is all made of CFRP.

  It is preferable that parts other than the part arrange | positioned along the outer member outer edge part of the inner member used for the panel component for motor vehicle outer panels of this invention are comprised with the metal. This is because it is difficult to form with CFRP and the high manufacturing cost is made of an inexpensive metal with better formability while ensuring the required component rigidity. This is because it is possible to provide lower cost parts while maintaining the advantages of high strength, rigidity and light weight due to the high appearance quality and the outer circumference of the outer member made of CFRP. Further, an aluminum alloy is more preferable from the viewpoints of lightening effect, securing necessary rigidity and manufacturing cost.

  The fiber length of the carbon fiber used for the inner member of the present invention is preferably 20 mm or more. This is because as the fiber length is longer, the strength and rigidity strengthening effect of the reinforcing fiber is improved, and more preferably, 50 mm or more in order to secure approximately 80% of the material strength value when the fiber length is sufficiently long. It is good to do.

  The panel member for an automobile outer plate of the present invention is preferably used at a location having an opening / closing function. This is because the location with the opening and closing mechanism is excellent in appearance quality that can be seen by the human eye, and is excellent in strength, rigidity, and lightness, so it is possible to achieve both solid feeling, lightness and durability during opening and closing operations. Thus, the present invention can be applied to various structural parts such as doors and trunk lids. Especially, it is more preferable that a part or all of the panel part for an automobile outer plate is used as an automobile hood. This is because the hood has a relatively large area among automobile parts, so the effect of weight reduction by applying the present invention is high, and the required appearance quality matches the quality obtained by the present invention. It is. Here, a part of the automotive outer panel component is used in the automotive hood. The automotive hood is divided into a plurality of components, and the automotive outer panel component according to the present invention is part of the plurality of components. Is provided, or equipment irrelevant to the above effect achieved by the automotive exterior panel panel component according to the present invention may be provided in a part of the automobile hood.

  Hereinafter, preferred embodiments of the present invention will be described with reference to the drawings.

  1, 2, 3, and 4 show an automotive outer panel component according to an embodiment of the present invention. FIG. 1 is an exploded perspective view of an outer member 2 forming an external surface, an inner member 3 positioned inside the outer member 2, and a metal fastening member 4 installed inside the inner member 3, and FIG. FIG. 3 shows a perspective view of an automotive exterior panel member 1 to which members 3 are joined. FIG. 3 shows a cross-sectional view of a left-right central section 0Y in FIG. 2, and FIG. 4 shows a cross-section of a front-rear central section 0X in FIG. It is a diagram.

  The outer member 2 and the inner member 3 in this embodiment are bonded and bonded by the adhesive layer 5, and the outer peripheral portion of the back side of the outer member 2 and the surface of the inner member 3 in contact therewith are all bonded.

  The bonding configuration of the outer member 2 and the inner member 3 is preferably an adhesive, and among them, what is called a structural adhesive or an elastic adhesive is more preferable. For example, neoprene-phenolic, vinyl-phenolic, nitrile-epoxy , Epoxy-phenolic, nylon-epoxy, modified epoxy, polyurethane, acrylic, silicone, polysulfide, elastic epoxy, bismaleimide, polyimide, polybenzimidazole, cement, low melting glass, alkali metal silicate, phosphate, ethylene vinyl acetate , Ethylene ethyl acrylate, and the like, and a configuration in which stress is transmitted between the outer member and the inner member is preferable.

  Examples of the reinforcing fibers used in the inner member 2 according to the present invention include inorganic fibers such as carbon fibers and glass fibers, and reinforcing fibers made of organic fibers such as Kevlar fibers, polyethylene fibers, polyamide fibers, and PBO fibers. . Carbon fiber is particularly preferable from the viewpoint of rigidity and strength per weight. Examples of the FRP matrix resin include mature curable resins such as epoxy resins, unsaturated polyester resins, vinyl ester resins, and phenol resins. Furthermore, polyamide resins, polyolefin resins, dicyclopentadiene resins, polyurethane resins, etc. A mature plastic resin can also be used. The FRP composed of these reinforcing fibers and matrix resin can be a single layer, but in order to develop desirable characteristics (especially desirable bending rigidity and torsional rigidity in a specific direction) It is preferable to do. Further, the mechanical properties of FRP can be appropriately set depending on the selection and combination of the reinforcing fibers and matrix resin as described above, the orientation and volume content of the reinforcing fibers, the laminated configuration and the like.

  FIG. 4 shows a panel member for an automobile outer plate according to another embodiment of the present invention. Similarly, the outer member 12 and the inner member 13 constitute an automotive outer panel component, and a metal fastening member 14 is installed. In the present embodiment, a separate metal part 17 is provided in the central portion of the inner member 13 and bears hood rigidity. The separate part may be joined to the outer member 12, but may be joined to the inner member 13, and in addition to the adhesive structure, rivet joining or mechanical joining using a bolt or the like can be performed. The joining method may be selected in consideration of the appearance quality, strength, rigidity, etc. required for each product.

1 is an exploded perspective view of an automotive outer panel component according to an embodiment of the present invention. 1 is a perspective view of an automotive outer panel component according to an embodiment of the present invention. It is 0Y sectional drawing of the outer panel panel component for motor vehicles based on one embodiment of this invention. It is 0X sectional drawing of the outer plate | board panel component for motor vehicles based on one embodiment of this invention. It is a disassembled perspective view of the outer plate | board panel component for motor vehicles based on another embodiment of this invention.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1,11 Automotive outer panel component 2,12 Outer member 3,13 Inner member 4,14 Metal fastening member 5,15 Adhesive layer 6,16 Bending part 17 Separate metal component

Claims (20)

The stiffener structure cross section is arranged in a shape along the outer peripheral edge of the outer member, which is composed of at least a surface of 2500 cm ² or more, and which constitutes the outer surface whose radius of the maximum cross section of the surface is 50 mm or more. An automotive outer panel component, wherein the outer member is made of a resin and the inner member is made of a carbon fiber reinforced resin. The automotive outer panel component according to claim 1, wherein an undercut portion having a hemming bending shape is provided on an outer peripheral end edge of the outer member. The panel member for an automobile outer plate according to claim 1 or 2, wherein the outer member is made of a short fiber reinforced resin. The panel member for an automobile outer plate according to claim 1 or 2, wherein the outer member is made of a nanocomposite resin. The outer member is composed of at least 2500 cm ² or more and the outer surface has a radius of 50 mm or more. The stiffener-shaped cross section is arranged along the outer edge of the outer member. An automotive outer panel component, wherein the outer member is made of metal and the inner member has a portion made of carbon fiber reinforced resin. . The automotive outer panel component according to any one of claims 1 to 5, wherein an inner member having a hat-shaped cross-section stiffener is used. The automotive outer panel component according to any one of claims 1 to 6, wherein an inner member is disposed on the entire outer edge of the outer member. The automotive outer panel according to any one of claims 1 to 7, wherein a metal fastening member is installed on the inner member and is attached to the automobile vehicle side via the metal fastening member. parts. The automotive outer panel component according to claim 1, wherein at least three metal fastening members are provided. The automotive outer panel component according to any one of claims 1 to 9, wherein a metal fastening member is provided on an outer peripheral portion of the automotive outer panel component. The automobile according to any one of claims 1 to 10, wherein a rotation mechanism is provided through a metal fastening portion, and the outer panel panel component for an automobile is rotated through the rotation mechanism. Outboard panel parts. The automotive outer panel component according to any one of claims 8 to 11, wherein the metal fastening member has a key-like hook mechanism. The automotive outer panel component according to any one of claims 8 to 12, wherein the metal fastening member has a U-shaped hooked mechanism. The outer panel member for automobile according to any one of claims 1 to 13, wherein the outer member and the inner member are integrated through an adhesive layer. The automotive outer panel component according to any one of claims 1 to 14, wherein substantially all of the portions arranged along the outer edge of the outer member of the inner member are made of carbon fiber reinforced resin. The automotive outer panel component according to any one of claims 1 to 15, further comprising a portion made of metal except for a portion arranged along an outer edge portion of the outer member of the inner member. The automotive outer panel component according to claim 16, further comprising a portion made of an aluminum alloy except for a portion disposed along an outer edge portion of the outer member of the inner member. The automotive outer panel component according to any one of claims 1 to 17, wherein a fiber length of the carbon fiber used for the inner member is 20 mm or more. A method for using an automotive outer panel component according to claim 1, wherein the automotive outer panel component according to claim 1 is used at a location requiring an opening / closing function. An automotive hood comprising a part or all of the automotive outer panel component according to claim 1.

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