panel

Abstract

To provide a panel for a movable body which can secure both tension rigidity and dent resistance.SOLUTION: A panel (10) includes a metal base panel (11), and a resin sheet (12). The resin sheet (12) is arranged on the base panel (11). The resin sheet (12) includes a first region (121), a second region (122), and a third region (123). The first region (121) is positioned at a central part of the resin sheet (12). The second region (122) is positioned on the outer peripheral side of the resin sheet (12) relative to the first region (121). The first region (121) and the second region (122) are bonded to the base panel (11). The third region (123) is positioned between the first region (121) and the second region (122). The third region (123) is non-adhesive to the base panel (11), or is weakly bonded to the base panel (11) compared to the first region (121) and the second region (122).SELECTED DRAWING: Figure 1

Description

Technical Field

[0001] The present disclosure relates to a panel for a moving body.

Background Art

[0002] For example, a panel used as an outer panel in a moving body such as an automobile is formed of a metal plate. Conventionally, in order to reduce the weight of the moving body, the panel has been thinned. However, when the panel is thinned, there is a problem that the stiffness of the panel decreases.

[0003] Patent Document 1 discloses a reinforcing structure for an automobile body in which a foam layer is interposed between an outer panel and an inner panel in order to improve the stiffness. In Patent Document 1, a thermosetting resin having a foaming ratio of 1.03 to 1.30 times is used as the foam layer. Patent Document 1 describes that if an inner panel is provided on an outer panel through a foam layer formed by foaming a thermosetting resin, it is possible to achieve both high stiffness and prevention of distortion of the outer panel.

[0004] Patent Document 2 discloses a technique of attaching a vibration damping and reinforcing material including a vibration damping sheet and a reinforcing sheet to, for example, a door panel of an automobile. The vibration damping sheet and the reinforcing sheet are each composed of a material mainly containing a resin. Patent Document 2 describes that by attaching a vibration damping sheet to a portion where vibration occurs in the door panel and attaching a reinforcing sheet to a portion where the rigidity is insufficient, the door panel can be suitably vibration-damped and reinforced.

Prior Art Documents

Patent Documents

[0005]

Patent Document 1

Patent Document 2

Summary of the Invention

Problems to be Solved by the Invention

[0006] In Patent Document 1, the entire surface of the foam layer made of a thermosetting resin is adhered to a panel whose outer plate is a panel. Also in Patent Document 2, the entire surface of the vibration damping and reinforcing material made of resin is adhered to the door panel. In this case, the tensile rigidity of the portion of the panel where the resin is disposed can be improved. On the other hand, by adhering the entire surface of the resin to the panel, the dent resistance of the panel may decrease.

[0007] An object of the present disclosure is to provide a panel for a moving body that can ensure both tensile rigidity and dent resistance.

Means for Solving the Problems

[0008] The panel for a moving body according to the present disclosure includes a metal base panel and a resin sheet. The resin sheet is disposed on the base panel. The resin sheet includes a first region, a second region, and a third region. The first region is located at the central portion of the resin sheet. The first region is adhered to the base panel. The second region is located on the outer peripheral side of the resin sheet with respect to the first region. The second region is adhered to the base panel. The third region is located between the first region and the second region. The third region is non-adhered to the base panel or is weakly adhered to the base panel as compared with the first region and the second region.

Effects of the Invention

[0009] According to the panel for a moving body according to the present disclosure, both tensile rigidity and dent resistance can be ensured.

Brief Description of the Drawings

[0010]

Figure 1

Figure 2

Figure 3

Figure 4

Figure 5

Figure 6

Figure 7

Figure 8

Figure 9

Figure 10

Figure 11

Figure 12

MODE FOR CARRYING OUT THE INVENTION

[0011] The panel for a mobile body according to the embodiment includes a metal base panel and a resin sheet. The resin sheet is disposed on the base panel. The resin sheet includes a first region, a second region, and a third region. The first region is located at the center of the resin sheet. The first region is adhered to the base panel. The second region is located on the outer peripheral side of the resin sheet with respect to the first region. The second region is adhered to the base panel. The third region is located between the first region and the second region. The third region is non-adhered to the base panel or is weakly adhered to the base panel as compared with the first region and the second region (first configuration).

[0012] In the panel according to the first configuration, the resin sheet is disposed in a region of the base panel that needs to supplement the tensile rigidity. Among the regions of the base panel where the resin sheet is disposed, the tensile rigidity of the portion facing the center of the resin sheet is particularly small. Therefore, in the first configuration, the first region located at the center of the resin sheet is adhered to the base panel. Thereby, in the region of the base panel where the resin sheet is disposed, the tensile rigidity can be efficiently increased. In the first configuration, the second region located on the outer peripheral side with respect to the first region of the resin sheet is also adhered to the base panel. Therefore, the tensile rigidity can be supplemented between the outer portion of the base panel and the portion where the first region of the resin sheet is adhered. Since the outer portion of the base panel where the resin sheet is located has a relatively high tensile rigidity and has a low need to supplement the tensile rigidity, by adhering the resin sheet to the base panel in the second region close to the portion, the tensile rigidity of the base panel can be efficiently increased.

[0013] In the panel according to the first configuration, there is a third region in the resin sheet that is non-adhered to the base panel or is weakly adhered to the base panel as compared with the first region and the second region. Therefore, a high dent resistance can be obtained as compared with the case where the entire surface of the resin sheet is uniformly and strongly adhered to the base panel.

[0014] Therefore, according to the first configuration, even if the entire surface of the resin sheet is not strongly adhered to the base panel, the stretching rigidity of the panel can be ensured, and furthermore, the dent resistance of the panel can also be ensured.

[0015] In the resin sheet, the second region may be an annular region surrounding the first region (second configuration).

[0016] According to the second configuration, among the strongly adhered regions provided on the resin sheet, the second region on the outer peripheral side surrounds the first region on the central side. Thereby, the stretching rigidity of the panel can be further improved.

[0017] In the resin sheet, the first region may be an annular region surrounding the center of gravity of the resin sheet. In this case, the region inside the first region of the resin sheet is non - adhered to the base panel or is weakly adhered to the base panel as compared with the first region and the second region (third configuration).

[0018] According to the third configuration, in the resin sheet, a non - adhered or weakly adhered region is also provided inside the first region. Thereby, the dent resistance of the panel can be further improved.

[0019] In the resin sheet, the third region may be non - adhered to the base panel (fourth configuration).

[0020] According to the fourth configuration, the third region of the resin sheet is not adhered to the base panel. In this case, the dent resistance of the panel can be more reliably improved. Also, compared with the case of adhering the third region to the base panel in addition to the first and second regions, the man - hours and costs for adhering the resin sheet to the base panel can be reduced.

[0021] In the resin sheet, the first region may be more strongly adhered to the base panel than the second region (fifth configuration).

[0022] Among the base panel, the portion where the second region of the resin sheet is adhered has less need to supplement the tensile rigidity compared to the portion where the first region of the resin sheet is adhered. In the base panel, the tensile rigidity of the portion where the second region of the resin sheet is adhered is easily ensured by the outer portion of the resin sheet having a relatively high tensile rigidity. Therefore, in the fifth configuration, the first region of the resin sheet is adhered to the base panel more strongly compared to the second region. Thereby, the tensile rigidity of the base panel can be more efficiently supplemented by the resin sheet.

[0023] At least one of the first region and the second region of the resin sheet may be adhered to the base panel by a plurality of linear adhesive portions parallel to each other (sixth configuration). The first region and the second region may each be adhered to the base panel by the plurality of linear adhesive portions. In this case, the linear adhesive portions in the first region are preferably parallel to the linear adhesive portions in the second region (seventh configuration).

[0024] In the sixth and seventh configurations, the first region and / or the second region of the resin sheet are adhered to the base panel by a plurality of linear adhesive portions parallel to each other. For example, when adhering the resin sheet to the base panel with an adhesive, such linear adhesive portions can be formed by applying the adhesive to the resin sheet or the base panel in a certain application direction. Therefore, the application efficiency of the adhesive can be improved.

[0025] The base panel can have a coating film on its surface. In this case, the resin sheet may be adhered to the base panel from above the coating film (eighth configuration).

[0026] On the surface of the base panel, a coating film can be formed, for example, by baking paint. When baking paint is applied after adhering a resin sheet to the base panel, in the baking paint process, surface distortion may occur in the base panel due to the difference in the coefficient of thermal expansion between the base panel and the resin sheet or the adhesive. On the other hand, when the resin sheet is adhered to the base panel after baking paint, the resin sheet and the adhesive are not subjected to the baking paint process and are not heated together with the base panel, so surface distortion of the base panel does not occur and the design property of the panel can be ensured. When the resin sheet is adhered to the base panel after baking paint, as in the eighth configuration, the resin sheet will be adhered to the base panel from above the coating film.

[0027] The base panel may include a support region. The support region is located outside the region where the resin sheet is disposed. The support region is a region for supporting other members (ninth configuration).

[0028] In the ninth configuration, the base panel includes a support region for supporting other members. In the base panel, by supporting other members, the tensile rigidity of the support region is ensured. On the other hand, in the region of the base panel that does not support other members, since the tensile rigidity is small, the tensile rigidity is compensated by arranging the resin sheet. The first region of the resin sheet is adhered to the central portion that particularly requires stiffness compensation among the regions where the resin sheet is arranged in the base panel, so that the tensile rigidity can be efficiently imparted to the base panel. The second region of the resin sheet is adhered between the portion where the first region of the resin sheet is adhered and the tensile rigidity is improved and the support region where the tensile rigidity is ensured by supporting other members in the base panel, so that the tensile rigidity can be further increased.

[0029] Hereinafter, embodiments of the present disclosure will be described with reference to the drawings. The same or corresponding components in each figure are denoted by the same reference numerals, and the same description will not be repeated.

[0030] FIG. 1 is a diagram showing a schematic configuration of panel 10 according to the present embodiment. Panel 10 is used for a moving body. Although not particularly limited, the moving body is, for example, an automobile. In the present embodiment, an example in which panel 10 is a door outer panel of an automobile will be described.

[0031] In FIG. 1, a state of viewing door outer panel 10 from the back side is shown. FIG. 2 is a rear view of door inner panel 20 corresponding to door outer panel 10. Panels 10 and 20 are joined in a state where their back sides face each other.

[0032] Referring to FIG. 1, panel 10 includes base panel 11, one or more resin sheets 12, and adhesive portion 13. In the present embodiment, panel 10 includes a plurality of resin sheets 12. Each of resin sheets 12 is disposed on base panel 11. Each resin sheet 12 is disposed on the back surface (the surface on the side of other panel 20 (FIG. 2)) of base panel 11. Adhesive portion 13 adheres each resin sheet 12 and base panel 11.

[0033] Base panel 11 is made of metal. Base panel 11 is formed of a metal plate. Base panel 11 may be formed of a steel plate, or may be formed of a plate material such as aluminum or its alloy, for example. Although not particularly limited, the plate thickness of base panel 11 is, for example, 0.5 mm or less. The plate thickness of base panel 11 may be 0.3 mm or more. Base panel 11 includes regions 111, 112, and 113 on its back surface.

[0034] In base panel 11, regions 111 and 112 are support regions for supporting members other than resin sheet 12 (other members). Referring to FIG. 2, the other members in the example of the present embodiment are belt line reinforcement 31 and door reinforcement 32. Belt line reinforcement 31 is disposed in the vicinity of window frame 21 and extends substantially in the longitudinal direction of the automobile. Door reinforcement 32 is disposed below belt line reinforcement 31 and is inclined with respect to the longitudinal direction of the automobile.

[0035] Referring to FIGS. 1 and 2, the support region 111 of the base panel 11 supports the belt line reinforcement 31. On the other hand, the support region 112 of the base panel 11 supports the door reinforcement 32. More specifically, the belt line reinforcement 31 and the door reinforcement 32 are joined to the support regions 111 and 112 of the base panel 11, respectively.

[0036] Referring to FIG. 1, in the base panel 11, the region 113 is an arrangement region for arranging the resin sheet 12. The resin sheet 12 is arranged in each of the arrangement regions 113.

[0037] The resin sheet 12 is formed of a material mainly made of resin. Although not particularly limited, the resin sheet 12 may be mainly formed of, for example, foamed resin. The thickness of the resin sheet 12 may be equal to or greater than the thickness of the base panel 11, or may be less than the thickness of the base panel 11. In the present embodiment, the resin sheet 12 has a rectangular shape in plan view. However, the shape of the resin sheet 12 can be appropriately changed.

[0038] The resin sheet 12 is adhered to the base panel 11 by the adhesive portion 13. FIGS. 3 and 4 are diagrams for explaining the detailed configuration of the adhesive portion 13. FIG. 3 shows an example of the resin sheet 12 viewed from the surface side facing the base panel 11. FIG. 4 schematically shows a cross section of the portion of the panel 10 where the resin sheet 12 is located.

[0039] Referring to FIGS. 3 and 4, the resin sheet 12 includes a first region 121, a second region 122, a third region 123, and a fourth region 124.

[0040] The first region 121 is located at the center of the resin sheet 12. More specifically, the first region 121 is an annular region surrounding the center of gravity of the resin sheet 12. The second region 122 is located on the outer peripheral side of the resin sheet 12 with respect to the first region 121. In the present embodiment, the second region 122 is an annular region surrounding the first region 121. The regions 121 and 122 are adhered to the base panel 11 by the adhesive portion 13.

[0041] The adhesive portion 13 includes a plurality of linear adhesive portions 131 and a plurality of linear adhesive portions 132. The first region 121 on the central side of the resin sheet 12 is adhered to the base panel 11 by the linear adhesive portions 131. In the first region 121, the linear adhesive portions 131 are arranged parallel to each other. The second region 122 on the outer peripheral side of the resin sheet 12 is adhered to the base panel 11 by the linear adhesive portions 132. In the second region 122, the linear adhesive portions 132 are arranged parallel to each other. The linear adhesive portions 132 in the second region 122 are also substantially parallel to the linear adhesive portions 131 in the first region 121.

[0042] The regions 121 and 122 of the resin sheet 12 are preferably adhered to the base panel 11 by an adhesive. That is, each of the linear adhesive portions 131 and 132 in the regions 121 and 122 can be formed by an adhesive. However, the regions 121 and 122 may be adhered to the base panel 11 by a method other than an adhesive. For example, the regions 121 and 122 may be adhered to the base panel 11 by a double-sided tape or vulcanization adhesion.

[0043] As shown in FIG. 4, the base panel 11 may have a coating film 114 on its surface. In this case, the resin sheet 12 may be adhered to the base panel 11 from above the coating film 114. More specifically, the adhesive portion 13 that adheres the regions 121 and 122 of the resin sheet 12 to the base panel 11 may be disposed on the coating film 114. The coating film 114 is formed on the surface of the base panel 11 by, for example, baking paint.

[0044] Referring to FIGS. 3 and 4, in the resin sheet 12, the third region 123 is disposed between the first region 121 and the second region 122. The third region 123 is an annular region surrounding the first region 121. The second region 122 surrounds the third region 123. The fourth region 124 is disposed inside the first region 121. The fourth region 124 is a region including the center of gravity of the resin sheet 12. The third region 123 and the fourth region 124 are non-adhesive to the base panel 11.

[0045] In the present embodiment, among the resin sheet 12, the first region 121 and the second region 122 are adhered to the base panel 11 by the adhesive portion 13, and the third region 123 and the fourth region 124 are not adhered to the base panel 11. Further, in the present embodiment, among the resin sheet 12, the region (outer peripheral edge portion) surrounding the regions 121, 122, 123, 124 is also not adhered to the base panel 11. The first region 121 is more strongly adhered to the base panel 11 than the second region 122. That is, in the resin sheet 12, the adhesive force of the first region 121 to the base panel 11 is stronger than the adhesive force of the second region 122 to the base panel 11.

[0046] In order to make the adhesive force of the first region 121 stronger than the adhesive force of the second region 122, for example, the density of the adhesive portion 13 in the first region 121 can be made larger than the density of the adhesive portion 13 in the second region 122. When the resin sheet 12 is adhered to the base panel 11 with an adhesive, the application rate of the adhesive in the first region 121 may be made higher than the application rate of the adhesive in the second region 122.

[0047] Alternatively, in order to increase the adhesive strength of the first region 121 compared to that of the second region 122, the type of adhesive can be changed between the first region 121 and the second region 122. That is, in the resin sheet 12, the central first region 121 can be adhered to the base panel 11 with a relatively hard adhesive, and the outer peripheral second region 122 can be adhered to the base panel 11 with a relatively soft adhesive. In this case, even if the application rate of the adhesive in the regions 121 and 122 is the same, the adhesive strength of the first region 121 with respect to the base panel 11 can be made stronger than that of the second region 122.

[0048] In the example of this embodiment, the density of the adhesive portions 13 in the first region 121 is greater than the density of the adhesive portions 13 in the second region 122. In the examples shown in FIGS. 3 and 4, the interval between the linear adhesive portions 131 in the first region 121 is smaller than the interval between the linear adhesive portions 132 in the second region 122. The width of each linear adhesive portion 131 is equivalent to that of each linear adhesive portion 132. However, by making the interval between the linear adhesive portions 131 equivalent to the interval between the linear adhesive portions 132 and making the width of each linear adhesive portion 131 larger than the width of each linear adhesive portion 132, the density of the adhesive portions 13 in the first region 121 may be made greater than the density of the adhesive portions 13 in the second region 122.

[0049] The magnitude relationship between the density of the adhesive portions 13 in the first region 121 and the density of the adhesive portions 13 in the second region 122 can be confirmed, for example, by sampling the arrangement area of the adhesive portions 13 per unit area while shifting the position from the center side to the outer peripheral side of the resin sheet 12 with 1 / 100 of the area of the surface of the resin sheet 12 facing the base panel 11 as the unit area. In the case of this embodiment, as schematically shown in FIG. 5, the arrangement area of the adhesive portions 13 per unit area is zero at the position of the center of gravity of the resin sheet 12, and has peaks in the first region 121 near the center of gravity and the second region 122 on the outer peripheral side of the first region 121. However, the peak of the arrangement area of the adhesive portions 13 per unit area is larger in the first region 121 than in the second region 122. In the third region 123 between the first region 121 and the second region 122, the arrangement area of the adhesive portions 13 per unit area is zero.

[0050] [Effect] In the panel 10 according to the present embodiment, the resin sheet 12 is disposed in a region 113 of the base panel 11 where the tensile rigidity is relatively insufficient. More specifically, the resin sheet 12 is disposed in a region 113 different from the regions 111 and 112 where the tensile rigidity is ensured by the belt line reinforcement 31 and the door reinforcement 32. Among the regions 113, the tensile rigidity of the portion facing the central portion of the resin sheet 12 is particularly small. Therefore, in the present embodiment, the first region 121 located at the central portion of the resin sheet 12 is adhered to the base panel by the adhesive portion 13. Thereby, the tensile rigidity can be efficiently increased in the region 113 of the base panel 11.

[0051] Further, in the present embodiment, the second region 122 on the outer peripheral side of the resin sheet 12 is also adhered to the base panel 11 by the adhesive portion 13. In this case, between the portion of the base panel 11 where the first region 121 of the resin sheet 12 is adhered and the tensile rigidity is increased, and the regions 111 and 112 where the tensile rigidity is increased by supporting the belt line reinforcement 31 and the door reinforcement 32 as other members, the tensile rigidity can be compensated.

[0052] As described above, in the panel 10 according to the present embodiment, by adhering the appropriate regions 121 and 122 of the resin sheet 12 to the base panel 11, the lack of tensile rigidity in the base panel 11 is efficiently compensated. Therefore, even if the entire surface of the resin sheet 12 is not adhered to the base panel 11, the tensile rigidity of the panel 10 can be ensured.

[0053] In the panel 10 according to the present embodiment, among the resin sheet 12, the third region 123 between the first region 121 and the second region 122 is non-adhered to the base panel 11. Thereby, compared with the case where the entire surface of the resin sheet 12 is adhered to the arrangement region 113 of the base panel 11, local deformation of the panel 10 is less likely to occur, and the dent resistance of the panel 10 can be improved.

[0054] In the panel 10 according to this embodiment, in the resin sheet 12, the strong adhesion region 122 on the outer peripheral side is provided so as to surround the strong adhesion region 121 on the central side. Thereby, the stretching rigidity of the panel 10 can be further improved.

[0055] In the panel 10 according to this embodiment, in the resin sheet 12, a fourth region 124 that is non-adhesive to the base panel 11 is provided inside the first region 121. Thereby, since there are more portions where the resin sheet 12 is not adhered in the region 113 of the base panel 11, the dent resistance of the panel 10 can be further improved.

[0056] In this embodiment, the base panel 11 includes support regions 111 and 112 that are located outside the arrangement region 113 of the resin sheet 12. The support regions 111 and 112 can have relatively high stretching rigidity by supporting the belt line reinforcement 31 and the door reinforcement 32, respectively. Among the base panel 11, the portion where the second region 122 of the resin sheet 12 is adhered is closer to the support regions 111 and 112 than the portion where the first region 121 of the resin sheet 12 is adhered. Therefore, the stretching rigidity of the portion of the base panel 11 where the second region 122 of the resin sheet 12 is adhered can be ensured to some extent by the support regions 111 and 112. Therefore, in this embodiment, the first region 121 of the resin sheet 12 is strongly adhered to the base panel 11 as compared with the second region 122. Thereby, stretching rigidity can be efficiently imparted to particularly necessary portions of the base panel 11.

[0057] In the present embodiment, the first region 121 and the second region 122 of the resin sheet 12 are adhered to the base panel 11 by a plurality of linear adhesive portions 131, 132 that are parallel to each other. For example, when forming the adhesive portion 13 between the base panel 11 and the resin sheet 12 with an adhesive, the linear adhesive portions 131, 132 are effective from the viewpoint of the coating efficiency of the adhesive. That is, when forming the linear adhesive portions 131, 132 with an adhesive, the adhesive may be applied to the resin sheet 12 or the base panel 11 in a certain application direction, so that the adhesive can be applied efficiently.

[0058] In the present embodiment, the resin sheet 12 may be adhered to the base panel 11 from above the coating film 114. That is, the resin sheet 12 may be adhered to the base panel 11 after baking painting, and as a result, the adhesive portion 13 may be disposed on the base panel 11 via the coating film 114. For example, when baking painting is performed after adhering the resin sheet 12 to the base panel 11, in the baking painting process, surface distortion may occur in the base panel 11 due to the difference in the coefficient of thermal expansion between the resin sheet 12 or the adhesive portion 13 and the base panel 11. On the other hand, when the resin sheet 12 is adhered to the base panel 11 after baking painting, the resin sheet 12 and the adhesive portion 13 are not subjected to the baking painting process and are not heated together with the base panel 11, so that surface distortion of the base panel 11 does not occur, and the design property of the panel 10 can be ensured.

[0059] However, the resin sheet 12 may be adhered to the base panel 11 before baking painting. In this case, the adhesive portion 13 that adheres the base panel 11 and the resin sheet 12 is disposed on the base panel 11 without passing through the coating film 114. When baking painting is performed after adhering the resin sheet 12 to the base panel 11, the resin sheet 12 and the adhesive portion 13 are heated together with the base panel 11. However, in the present embodiment, since the resin sheet 12 is not adhered to the entire surface of the base panel 11, there is a portion where distortion can escape in the arrangement region 113 of the resin sheet 12. Therefore, even when baking painting is performed after adhering the resin sheet 12, the surface distortion of the base panel 11 can be reduced as compared with the case where the entire surface of the resin sheet 12 is adhered to the base panel 11. When baking painting is performed after adhering the resin sheet 12 to the base panel 11, the adhesive portion 13 may be formed of a thermosetting adhesive such as a mastic sealer. On the other hand, when the resin sheet 12 is adhered to the base panel 11 after baking painting the base panel 11, the adhesive portion 13 may be formed of a room temperature curable adhesive.

[0060] The panel 10 according to the present embodiment secures the tension rigidity in the regions 111 and 112 by supporting the belt line reinforcement 31 and the door rain reinforcement 32 in the regions 111 and 112 of the base panel 11. On the other hand, with respect to the region 113 of the base panel 11 other than the regions 111 and 112, the tension rigidity is imparted by disposing the resin sheet 12. The resin sheet 12 is adhered to the base panel 11 in some of its regions 121 and 122. Thereby, the tension rigidity and the dent resistance of the panel 10 can be secured.

[0061] As described above, the embodiments according to the present disclosure have been described. However, the present disclosure is not limited to the above embodiments, and various modifications are possible without departing from the spirit thereof.

[0062] In the above-described embodiment, among the resin sheets 12, the central first region 121 is more strongly adhered to the base panel 11 than the outer peripheral second region 122. However, the adhesive force of the first region 121 with respect to the base panel 11 may be equivalent to the adhesive force of the second region 122 with respect to the base panel 11. Alternatively, the second region 122 may be more strongly adhered to the base panel 11 as compared with the first region 121.

[0063] For example, as shown in FIG. 6, by making the density of the adhesive portions 13 in the first region 121 substantially the same as the density of the adhesive portions 13 in the second region 122, the adhesive forces of the regions 121 and 122 can be made equivalent. In the example of FIG. 6, the width of each linear adhesive portion 131 in the first region 121 is substantially equal to the width of each linear adhesive portion 132 in the second region 122, and the interval between the linear adhesive portions 131 is also substantially equal to the interval between the linear adhesive portions 132. Further, for example, as shown in FIG. 7, by making the density of the adhesive portions 13 in the second region 122 larger than the density of the adhesive portions 13 in the first region 121, the second region 122 can be more strongly adhered to the base panel 11 as compared with the first region 121. In the example of FIG. 7, the width of each linear adhesive portion 131 in the first region 121 is substantially equal to the width of each linear adhesive portion 132 in the second region 122, but the interval between the linear adhesive portions 131 is larger than the interval between the linear adhesive portions 132. In the example of FIG. 7, by changing the type of the adhesive between the first region 121 and the second region 122, the second region 122 can also be more strongly adhered to the base panel 11 as compared with the first region 121.

[0064] In the above-described embodiment, among the resin sheets 12, the third region 123 and the fourth region 124 are non-adhered to the base panel 11. However, one of the third region 123 and the fourth region 124 may be adhered to the base panel 11, or as shown in FIG. 8, both the third region 123 and the fourth region 124 may be adhered to the base panel 11. The third region 123 may be adhered to the base panel 11 by a plurality of linear adhesive portions 133 parallel to each other. Similarly, the fourth region 124 may be adhered to the base panel 11 by a plurality of linear adhesive portions 134 parallel to each other.

[0065] In the example of FIG. 8, the third region 123 and the fourth region 124 are weakly adhered to the base panel 11 as compared with the first region 121 and the second region 122. For example, the density of the adhesive portion 13 in the third region 123 and the density of the adhesive portion 13 in the fourth region 124 are smaller than the density of the adhesive portion 13 in the first region 121 and the density of the adhesive portion 13 in the second region 122. The density of the adhesive portion 13 in the third region 123 may be the same as or different from the density of the adhesive portion 13 in the fourth region 124. The density of the adhesive portion 13 in the third region 123 can be adjusted, for example, by the width of the linear adhesive portion 133 or the interval between the linear adhesive portions 133. Similarly, the density of the adhesive portion 13 in the fourth region 124 can be adjusted, for example, by the width of the linear adhesive portion 134 or the interval between the linear adhesive portions 134. In the example shown in FIG. 8, the third region 123 and the fourth region 124 can be weakly adhered to the base panel 11 as compared with the first region 121 and the second region 122 by changing the type of adhesive used for the third region 123 and the fourth region 124 and the first region 121 and the second region 122.

[0066] In the above embodiment, the first region 121 of the resin sheet 12 is an annular region surrounding the center of gravity of the resin sheet 12. However, the first region 121 only needs to be disposed at the central portion of the resin sheet 12 and does not necessarily have to be annular. The first region 121 may be a non-annular region including the center of gravity of the resin sheet 12. Also in this case, similar to the above embodiment, the first region 121 may be strongly adhered to the base panel 11 as compared with the second region 122. For example, as shown in FIG. 9, the density of the adhesive portion 13 in the non-annular first region 121 may be larger than the density of the adhesive portion 13 in the second region 122.

[0067] Even when the first region 121 has a non-circular shape, the adhesive force of the first region 121 to the base panel 11 may be equivalent to the adhesive force of the second region 122 to the base panel 11, similar to the case where the first region 121 has a circular shape. Alternatively, the second region 122 may be more strongly adhered to the base panel 11 compared to the first region 121. For example, as shown in FIG. 10, by making the density of the adhesive portions 13 in the first region 121 substantially the same as the density of the adhesive portions 13 in the second region 122, the adhesive forces of the regions 121 and 122 can be made equivalent. Also, for example, as shown in FIG. 11, by making the density of the adhesive portions 13 in the second region 122 greater than the density of the adhesive portions 13 in the first region 121, the second region 122 can be more strongly adhered to the base panel 11 compared to the first region 121.

[0068] When the first region 121 is a non-circular region, the third region 123 between the first region 121 and the second region 122 may not be adhered to the base panel 11 as shown in FIGS. 9 to 11, or may be adhered to the base panel 11 as shown in FIG. 12. In the example shown in FIG. 12, the third region 123 is weakly adhered to the base panel 11 compared to the first region 121 and the second region 122. For example, the density of the adhesive portions 13 in the third region 123 is smaller than the density of the adhesive portions 13 in the first region 121 and the density of the adhesive portions 13 in the second region 122.

[0069] In the modified examples shown in FIGS. 6 to 12, the magnitude relationship of the density of the adhesive portions 13 in the first region 121, the linear adhesive portions 132 in the second region 122, the density of the linear adhesive portions 133 in the third region 123, and the density of the linear adhesive portions 134 in the fourth region 124 is the same as in the above-described embodiment. For example, with an area of 1 / 100 of the area of the surface of the resin sheet 12 facing the base panel 11 as the unit area, the arrangement area of the adhesive portions 13 per unit area can be confirmed by sampling while shifting the position from the center side to the outer peripheral side of the resin sheet 12.

[0070] In the above-described embodiment and the modified examples shown in FIGS. 6 to 12, the first region 121 and the second region 122 of the resin sheet 12 are adhered to the base panel 11 by the linear adhesive portions 131 and 132, respectively. However, the shape of the adhesive portion that adheres the first region 121 and the second region 122 to the base panel 11 is not limited to this. The first region 121 and the second region 122 may be adhered to the base panel 11 by, for example, a broken-line-shaped or dot-shaped adhesive portion, or a planar adhesive portion.

[0071] Similarly, when adhering the third region 123 and / or the fourth region 124 to the base panel 11, the third region 123 and / or the fourth region 124 do not necessarily have to be adhered to the base panel 11 by the linear adhesive portions 133 and 134. The third region 123 and / or the fourth region 124 may also be adhered to the base panel 11 by, for example, a broken-line-shaped or dot-shaped adhesive portion, or a planar adhesive portion.

[0072] In the above-described embodiment and the modified examples shown in FIGS. 6 to 12, the resin sheet 12 includes two regions 121 and 122 that are adhered relatively strongly to the base panel 11. However, the resin sheet 12 can also include three or more strongly adhered regions. Also in this case, it is sufficient that the strongly adhered regions and the non-adhered or weakly adhered regions are arranged alternately from the central side to the outer peripheral side of the resin sheet 12. However, from the viewpoint of further improving the dent resistance, as in the above-described embodiment and the modified examples shown in FIGS. 6 to 12, only two strongly adhered regions 121 and 122 are provided on the resin sheet 12, and it is preferable that a certain width of the non-adhered or weakly adhered region 123 located between the strongly adhered regions 121 and 122 is ensured.

[0073] In the above-described embodiment and the modified examples shown in FIGS. 6 to 12, in the resin sheet 12, the third region 123, which is a non-adhesive or weakly adhesive region, surrounds the first region 121, which is a strongly adhesive region, substantially over the entire circumference, and the second region 122, which is another strongly adhesive region, surrounds the third region 123 substantially over the entire circumference. That is, an annular non-adhesive or weakly adhesive region 123 is provided around the first region 121, and an annular strongly adhesive region 122 is provided around the third region 123. However, the first region 121 does not necessarily have to be surrounded by the non-adhesive or weakly adhesive region 123 over its entire circumference. For example, the non-adhesive or weakly adhesive region 123 may be provided intermittently around the first region 121. Similarly, the third region 123 does not necessarily have to be surrounded by the strongly adhesive region 122 over its entire circumference. For example, the strongly adhesive region 122 may be provided intermittently around the third region 123. It is sufficient that the resin sheet 12 has a third region 123 as a non-adhesive or weakly adhesive region outside the first region 121 on the central side and a second region 122 as a strongly adhesive region outside the third region 123.

[0074] The panel 10 according to the above-described embodiment is an outer door panel of an automobile. However, when the moving body in which the panel 10 is used is an automobile, the panel 10 may be, for example, an outer panel of a hood or a roof. The shape of the resin sheet 12 does not necessarily have to be rectangular, and can be appropriately changed according to, for example, the use of the panel 10 and the shape of the portion where stiffening is required. Also, the regions 121, 122, 123, 124 in the resin sheet 12 do not necessarily have to have a rectangular outer shape, and their shapes can be appropriately changed.

Explanation of Reference Numerals

[0075] 10: Panel 11: Base Panel 111, 112: Support Region 114: Coating Film 12: Resin Sheet 121: First Region 122: Second Region 123: Third Region 131, 132: Linear adhesive part

Claims

1. A panel for a moving body, comprising: a metal base panel; and a resin sheet disposed on the base panel. The resin sheet includes: a first region located at the center of the resin sheet and adhered to the base panel; a second region located on the outer peripheral side of the resin sheet with respect to the first region and adhered to the base panel; and a third region located between the first region and the second region and non-adhered to the base panel or weakly adhered to the base panel as compared with the first region and the second region. The first region is an annular region surrounding the center of gravity of the resin sheet. The region inside the first region of the resin sheet is non-adhered to the base panel or weakly adhered to the base panel as compared with the first region and the second region.

2. A panel for a moving body, comprising: a metal base panel; and a resin sheet disposed on the base panel. The resin sheet includes: a first region located at the center of the resin sheet and adhered to the base panel; a second region located on the outer peripheral side of the resin sheet with respect to the first region and adhered to the base panel; and a third region located between the first region and the second region and non-adhered to the base panel or weakly adhered to the base panel as compared with the first region and the second region. The first region and the second region are each adhered to the base panel by a plurality of linear adhesive portions parallel to each other. The linear adhesive portions in the first region are parallel to the linear adhesive portions in the second region.

3. The panel according to Claim 1 or 2, wherein the second region is an annular region surrounding the first region.

4. The panel according to any one of Claims 1 to 3, wherein the third region is non-adhered to the base panel.

5. The panel according to any one of Claims 1 to 4, wherein the first region is more strongly adhered to the base panel than the second region.

6. The panel according to any one of Claims 1 to 5, wherein the base panel has a coating film on its surface, and the resin sheet is adhered to the base panel from above the coating film.

7. The panel according to any one of Claims 1 to 6, wherein ​ ​ ​ ​ ​ ​ ​ ​ ​ The base panel is a panel that is located outside the region where the resin sheet is disposed and includes a support region for supporting other members.

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