Surface trim parts

Abstract

To provide a decorative surface component that can prevent bulging at the bent portion of the folded-over surface material. [Solution] The surface decoration part 1 comprises a base material 2 and a surface material 3 that covers the front side of the base material 2 and is attached to the base material 2. The base material 2 has one portion 5, another portion 6 connected to the one portion 5 via a bent portion 7, and a rib 12 formed on the back side of the base material 2, spanning the bent portion 7 and extending from the one portion 5 to the other portion 6, along the surface of the edge of the bent portion 7. The surface material 3 has a folded portion 18 that is folded back from the front side to the back side of the base material 2. The folded portion 18 is held in a stretched state, stretched over the rib 12 in the vicinity of the bent portion 7.

Description

Technical Field

[0001] The present invention relates to a surface decoration part in which a surface material is attached to a base material so as to cover the front side of the base material.

Background Art

[0002] Conventionally, in a surface decoration part including a surface material that covers a base material, when the base material has a vertical wall portion that forms a corner portion, the plate thickness of the vertical wall portion is reduced so as to form a concave portion on the back side of the vertical wall portion near the corner portion, thereby accommodating the surplus of the surface material generated during attachment of the surface material in the concave portion and suppressing the occurrence of bulging of the surface material at that location. With this configuration, when the surface decoration part is combined with other parts, it is difficult for a gap to occur due to the bulging of the surface material (see, for example, Patent Document 1).

Prior Art Documents

Patent Documents

[0003]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0004] However, when the angle of the corner portion is small, it is difficult to completely accommodate the surplus of the surface material. Also, when the original plate thickness of the vertical wall portion is small, it is difficult to reduce the plate thickness of the vertical wall portion so as to sufficiently secure a concave portion capable of accommodating the surface material. Furthermore, by forming a plate thickness difference, in the case of a base material made of synthetic resin, there is also a risk of causing molding defects (sink marks) due to the plate thickness difference.

[0005] The present invention has been made in view of such points, and an object thereof is to provide a surface decoration part that can hardly cause bulging at the bent portion of the folded-back portion of the surface material.

Means for Solving the Problems

[0006] A surface decorative component according to an aspect of the present invention comprises a base material and a surface material that covers the front side of the base material and is attached to the base material, wherein the base material has one portion and another portion connected to the one portion via a bent portion, and a rib formed on the back side of the base material in a range that straddles the bent portion and extends from the one portion to the other portion along the surface of the edge of the bent portion, and the surface material has a folded portion that is folded back from the front side to the back side of the base material, and the folded portion is held in a state that is stretched and pulled by the rib in the vicinity of the bent portion. [Effects of the Invention]

[0007] According to the present invention, it is possible to reduce the occurrence of bulging at the bent portion of the folded-over part of the surface material. [Brief explanation of the drawing]

[0008] [Figure 1] This is a schematic side view showing a part of a surface decorative component according to one embodiment of the present invention. [Figure 2] (a) is a perspective view showing an enlarged portion of the base material of the same surface decorative part, and (b) is a schematic cross-sectional view of the position corresponding to II in (a). [Figure 3] (a) is a perspective view showing the same substrate from the front, and (b) is a perspective view showing the substrate from the back. [Figure 4] (a) is a perspective view showing the same surface decorative part from the front, and (b) is a perspective view showing the surface decorative part from the back. [Figure 5] This is a magnified perspective view showing a portion of the substrate of a surface decorative part according to another embodiment of the present invention. [Modes for carrying out the invention]

[0009] Hereinafter, one embodiment of the present invention will be described with reference to the drawings.

[0010] In Figures 4(a) and 4(b), 1 is a surface decorative component. The surface decorative component 1 is, for example, an interior material for vehicles such as automobiles. The surface decorative component 1 comprises a base material 2 and a surface material 3 for decorating the base material 2. At least a portion of the space between the base material 2 and the surface material 3 may be occupied by another component, such as an elastic material (cushioning material). The shape of the surface decorative component 1 can be arbitrarily set, such as a square or circular shape. In this embodiment, the surface decorative component 1 is formed in a square shape.

[0011] The base material 2 shown in Figures 3(a) and 3(b) is integrally formed from a rigid material such as synthetic resin. The base material 2 has one part 5 and another part 6.

[0012] In this embodiment, part 5 is the main body portion of the base material 2, making up the majority of the base material 2. Part 5 is the main design element of the surface decorative component 1 when it is in use. In the illustrated example, for example, part 5 is formed in the shape of a rectangular plate. Part 5 has a front side, which is one main surface side that is at least partially covered by the surface material 3, and a back side, which is the other main surface side that is only covered by the edge portion of the surface material 3. In the figure, arrow D1 is on the front side of part 5, and arrow D2 is on the back side of part 5. The front side of part 5 is basically smooth or has few irregularities. Structural parts such as reinforcing ribs and mounting parts for attaching the surface decorative component 1 to the mounting part may be formed on the back side of part 5.

[0013] The other portion 6 is connected to the edge of the first portion 5, for example, the long side, and extends across the entire long side. The other portion 6 has a surface direction that intersects with the first portion 5. Therefore, the portion where the first portion 5 and the other portion 6 are connected forms a bent portion 7. From the position of the bent portion 7, the other portion 6 extends from the first portion 5 toward the back side of the first portion 5 (towards the direction of arrow D2). As shown in Figure 2(a), the bent portion 7 gives the base material 2 a roughly L-shaped cross-section. The bent portion 7 is formed as an edge portion or corner portion between the front edge of the first portion 5 and the other portion 6. For example, the bent portion 7 is formed by bending at an obtuse angle.

[0014] In this embodiment, the other part 6 has another bent portion 8. The other bent portion 8 is located away from the bent portion 7, i.e., the edge of part 5. For example, the other bent portion 8 is located in the other part 6 in the intermediate portion between the bent portion 7 and the edge 9. The other bent portion 8 is bent such that the edge 9 extends toward the back side of the other part 6. In the illustrated example, the other part 6 has a base end 10 on the side of the bent portion 7 and a tip end 11 on the opposite side, the edge 9 side, with respect to the other bent portion 8. For example, the other bent portion 8 is formed by bending at an obtuse angle. In the illustrated example, the angle θ1 between part 5 and the base end 10 is obtuse due to the bent portion 7, and the angle θ2 between the base end 10 and the tip end 11 is obtuse due to the other bent portion 8. Also, the angle θ3 between part 5 and the tip end 11 of the other part 6 is acute. Note that there is not limited to one other bent portion 8, but there may be multiple other bent portions 8 in the other part 6.

[0015] Furthermore, the base material 2 has ribs 12 formed on the back side of one portion 5 and the back side of the other portion 6, spanning the area that crosses the bent portion 7. The ribs 12 are formed, for example, in a straight line and are continuous on the back side of the base material 2 from the one portion 5 to the other portion 6.

[0016] As shown in Figure 2(b), the rib 12 is formed along the surface S of the edge of the bent portion 7. In this embodiment, surface S is the surface that forms the edge of the short side portion of the base material 2. The rib 12 may be flush with or nearly flush with surface S, or it may be located inside the base material 2 relative to surface S. Preferably, the rib 12 is located within a range of 5 mm or less inside the base material 2 relative to surface S.

[0017] In the present embodiment, as shown in FIGS. 1 and 2(a), the rib 12 is formed over a range straddling the bent portion 7 and the other bent portion 8. One end of the rib 12 is continuous with the back side of one portion 5, and the other end of the rib 12 is continuous with the tip portion 11 in the other portion 6. The other end of the rib 12 is located near the edge 9 and is separated from the edge 9 toward the base end portion 10 side or the other bent portion 8 side. Also, in the illustrated example, the rib 12 is formed such that the tip portion is positioned parallel or substantially parallel to the base end portion 10 when viewed from the side.

[0018] The protruding height of the rib 12 from the back side of the base material 2 is set to be smaller than the plate thickness of the base material 2.

[0019] The skin material 3 shown in FIGS. 4(a) and 4(b) is formed as an integral sheet shape by one or a plurality of sheet materials made of arbitrary materials, such as natural leather, artificial leather, resin, or a composite member obtained by arbitrarily combining them. The skin material 3 covers the front side of the base material 2, that is, from the front side of one portion 5 to the front side of the other portion 6, in a stretched state, that is, a state in which tension is applied, and is bonded and fixed to the base material 2 by adhesion, welding, or the like.

[0020] The skin material 3 includes a skin material main body portion 15. The skin material main body portion 15 is a portion that forms the main part of the skin material 3, covers at least a part of the front sides of one portion 5 and the other portion 6 of the base material 2, forms a part of the design area, and is a design portion that constitutes the design in the use state of the skin decoration component 1. The skin material main body portion 15 covers at least a part of the front side of one portion 5, and in the present embodiment, covers the whole and is bonded and fixed to the front side of one portion 5. That is, in the skin material main body portion 15, one main body portion 16 that covers the front side of one portion 5 of the base material 2 and the other main body portion 17 that covers the front side of the other portion 6 of the base material 2 are set. In the present embodiment, one main body portion 16 occupies most of the skin material main body portion 15, and the other main body portion 17 is continuous with the edge portion of one main body portion 16, for example, the long side portion. [[ID=第十四条]]

[0021] Further, in the surface material 3, a terminal portion continuous with the outer edge portion of the surface material main body portion 15 is folded back from the outer edge portion of the base material 2 to the back side of the base material 2, and a folded-back portion 18 fixed to the back side of the base material 2 by adhesion, welding, or the like is formed. The folded-back portion 18 is a non-design portion that does not form a design in the usage state of the surface decoration component 1. The folded-back portion 18 basically consists of a terminal portion bent in a direction perpendicular or substantially perpendicular to the outer edge portion of the base material 2. Therefore, at a position near the corner portion of the base material 2, an overlapping portion 20 is formed in the folded-back portion 18, where the terminal portions bent vertically or substantially vertically from the outer edge portions of the plurality of side portions of the base material 2 constituting this corner portion overlap each other.

[0022] In particular, an overlapping portion 21 is formed in the folded-back portion 18 at a position near the bent portion 7 extending from one portion 5 to another portion 6 of the base material 2. As shown in FIG. 1, in the overlapping portion 21, the terminal portion 25 folded back from one portion 5 of the base material 2, the terminal portion 26 bent from the outer edge portion of the base end portion 10 of the other portion 6, and the terminal portion 27 folded back from the outer edge portion of the tip portion 11 of the other portion 6 are respectively laid over the rib 12 and further bent and held in a state of being pulled in a direction perpendicular or substantially perpendicular to the rib 12. In the figure, the terminal portions 25 to 27 are schematically shown as arrows indicating their bending directions.

[0023] In addition, the surface material 3 may be formed with a sewn portion or a stitch portion constituting a design portion.

[0024] Next, a manufacturing method of the surface decoration component 1 will be described.

[0025] The sheet-shaped surface material 3 is bonded to the front side of the pre-formed base material 2 while being pulled so that no wrinkles occur. At this time, the surface material 3 aligns the surface material main body portion 15 with one portion 5 of the base material 2, and the terminal portion is bent from the outer edge portion of the one portion 5 to the back side of the one portion 5 and fixed to the back side of the one portion 5 by adhesion, welding, or the like to form the folded-back portion 18.

[0026] In the case of a base material 2 having one part 5 and another part 6 connected by a bent portion 7, since the surface direction of the one part 5 and the other part 6 that straddle the bent portion 7 is different, the bending direction of the end parts of the surface material 3 that are bent from their respective outer edges to the back side is different, and the end parts of the surface material 3 are densely packed together, causing overlap at the position of the folded portion 18. In particular, if the other part 6 has yet another bent portion 8, there is concern that there will be multiple overlaps and that these overlaps will overlap each other further. Since these overlaps are not fixed without contacting the back side of the base material 2, not only will excessive wrinkles spread to the design surface, but if the overlaps become thick and large, gaps will be created when the back side, i.e., the non-design side, of the surface decorative part 1 is joined with other parts, which will degrade the appearance.

[0027] Therefore, in this embodiment, a rib 12 is formed on the back side of the base material 2, spanning one portion 5 and the other portion 6, along the surface S of the edge of the bent portion 7, and a folded portion 18 near the bent portion 7 is formed by holding the end portion of the surface material 3 over the upper part of the rib 12 while it is pulled taut.

[0028] Therefore, the ribs 12 correct the bending direction of the end portions 25-27 of the surface material 3 to a direction perpendicular or nearly perpendicular to the ribs 12, and since the bending directions of each are nearly the same, the overlap becomes gentler, the occurrence of excessive wrinkles is suppressed, and the overlapping portion 21 becomes relatively smaller. Consequently, it is possible to make it less likely for bulging to occur at the bent portion 7 of the folded portion 18 of the surface material 3, and it is possible to make it less likely for gaps to occur when the back side of the surface decorative part 1 is joined with other parts.

[0029] Furthermore, in this embodiment, since other parts 6 are provided with other bent parts 8, the bent end portions tend to be more densely packed. Therefore, by forming the rib 12 over a range that spans the bent part 7 and the other bent parts 8, the end portions 25 to 27 can be bent in substantially the same direction by the rib 12, thereby reliably suppressing the overlap of these end portions 25 to 27.

[0030] In other words, the portion enclosed by the three sides of one portion 5, the base end 10 of the other portion 6, and the tip end 11 of the other portion 6 can be reduced to essentially two sides, the one portion 5 and the rib 12, by forming a rib 12 that extends from the one portion 5 to the tip end 11 of the other portion 6. This allows the bending direction of the terminal portions 25-27 to be aligned and the density of these terminal portions 25-27 to be suppressed.

[0031] In particular, when the angle θ3 between one portion 5 connected to one end of the rib 12 and the other portion 6, which is the tip portion 11 connected to the other end of the rib 12, is acute, it is difficult to accommodate the excess portion of the end of the skin material 3. However, by stretching the end portions 25-27 of the skin material 3 over the upper part of the rib 12 as described above, it is possible to prevent bulging at the bent portion 7 of the folded portion 18 of the skin material 3, even if the angle θ3 is acute.

[0032] Furthermore, since it is possible to reduce the likelihood of the folded portion 18 of the surface material 3 bulging at the bend portion 7 without making any changes such as simplifying the external design near the bend portion 7, the design freedom of the surface decorative part 1 can be improved.

[0033] Furthermore, the position of the rib 12 may be formed flush with or substantially flush with the surface S of the edge of the bent portion 7 of the base material 2, as in the other embodiment shown in Figure 5. In this case, when forming the folded portion 18, the surface material 3 can be pulled taut from the outer edge of the base material 2 and passed over the rib 12, making it less likely for wrinkles to form in the folded portion 18.

[0034] Furthermore, the other bent portions 8 are not essential components, and the ribs 12 of each embodiment may also be applied to configurations where one portion 5 and another portion 6 are connected via a bent portion 7, for example, in a V-shape, or to corner portions surrounded by a wall.

[0035] Furthermore, the surface decorative part 1 is not limited to those for vehicles, but may be used for any purpose. [Industrial applicability]

[0036] The present invention can be suitably used, for example, as interior material for vehicles such as automobiles. [Explanation of Symbols]

[0037] 1. Surface trim parts 2 Base material 3 Skin material 5 Part 1 6 Other parts 7. Flexed section 8 Other bending parts 12 Ribs 18 Turning section S side

Claims

1. Substrate and This comprises a surface material that covers the front surface of the base material and is attached to the base material, The aforementioned substrate is Part one, This one part is connected to another part via a bend, The base material has a rib formed on its back side that spans the bent portion and extends across one portion and the other portion, along the surface of the edge of the bent portion, The surface material has a folded portion that is folded back from the front side to the back side of the base material, The folded portion is held in a state where it is stretched and pulled across the rib near the bent portion. A surface decorative component characterized by the following features.

2. Other parts have other bends located away from the bend, The rib is formed over a range that spans the bent portion and the other bent portions. The surface decorative part according to claim 1, characterized in that it is a surface decorative part.

3. The angle between one portion connected to one end of the rib and the other portion connected to the other end of the rib is acute. The surface decorative part according to claim 1 or 2, characterized in that it is a surface decorative part according to claim 1 or 2.

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