JP4944555B2 - Automotive inner wall members - Google Patents

Description

  The present invention relates to an inner wall member of an automobile, and more particularly to a member whose surface is covered with leather.

  Conventionally, an instrument panel (instrument panel) having a structure in which leather is provided on the surface of a base material is known.

  A conventional instrument panel is configured by attaching a plurality of pieces of leather to the surface of a base material, and is covered with leather so that a driver cannot see the base material.

  Further, in the conventional instrument panel, the abutment portion between the end portions of each leather (the boundary portion between the first leather and the second leather adjacent to the first leather) is, for example, a sewn structure. (After stacking two leathers, stitching the vicinity of the end of each leather over a predetermined length, open the two leathers, the side where the end of each leather exists is opposed to the base material, the end of each leather The side where the portion does not exist is the front side, and two leathers are pasted on the base material) or a texture structure.

For example, Patent Document 1 can be cited as a document related to the conventional instrument panel.
JP 2004-359170 A

  By the way, when adopting the conventional slicing structure in the instrument panel, the leather swells at the abutting portion between the end portions of each leather, and the amount of swell increases, and the aesthetics and quality of the instrument panel are impaired. There's a problem. Further, in the conventional texture structure, a groove for storing the end portion of the leather must be formed in advance on the surface of the base material, and there is a problem that the structure of the instrument panel becomes complicated.

  In addition, the said problem is a problem which generate | occur | produces similarly not only in an instrument panel but in the inner wall members of motor vehicles, such as a door panel.

  The present invention has been made in view of the above problems, and in an inner wall member of an automobile in which the surface of a base material is covered with a plurality of leather pieces, the structure is simple and the end portions of each leather are An object of the present invention is to provide an inner wall member of an automobile that can prevent variation in the amount of swell of leather at a butted portion and maintain good aesthetics and quality.

In the invention according to claim 1, the leather material is folded back so that the back surfaces of the leather material are in contact with each other at the base and the small rigidity portion formed along the edge of the leather material with small bending rigidity. comprising a formed polymer unit, as the edges of the overlapping portions are opposed to each other have a a leather plurality pieces covering the surface of said substrate, said leather, along the edge of the leather The small rigidity portion is formed in the middle portion in the width direction of the strip-shaped thin portion formed by removing the back side portion of the leather material with a predetermined width, or the thin portion and the thin portion are formed. It is an inner wall member of an automobile in which the small rigidity portion is formed at a boundary with a portion of the leather material that is not formed .

The invention according to claim 2 is a base material, and a strip-shaped thin portion formed by removing a portion on the back side of the leather material with a predetermined depth and a predetermined width along an edge of the leather material. It is provided with a superposition part formed by folding the leather material so that the back surfaces of the leather material are in contact with each other at the boundary with the part of the leather material where the thin part is not formed, and the edges of the superposition parts are mutually connected An automobile inner wall member having a plurality of pieces of leather covering the surface of the base material so as to face each other.

According to a third aspect of the present invention, in the inner wall member of the automobile according to the second aspect , when viewed from the extending direction of the edge of the leather material, the thin portion of the leather material includes the thin portion and the thin portion. If There are those that have been progressively thicker in accordance from the boundary between portions of the leather material that is not formed toward the end edge of the leather, also viewed from the extending direction of the edge of the leather material, The surface existing at the boundary between the thin portion and the portion of the leather material where the thin portion is not formed is the side where the portion of the leather material where the thin portion is not formed is away from the edge of the leather material. located in the thin portion side thereof is positioned on the edge side of the leather, which is an inner wall member of the motor vehicle that has become slightly slanted.

The invention described in claim 4 is the vehicle interior wall member according to any one of claims 1 to 3, the overlapped portion of the front Symbol leather, a leather material which forms the overlapping portion It is an inner wall member of an automobile in which a seam for sewing is provided along the edge.

  According to the present invention, in the inner wall member of an automobile in which the surface of the base material is covered with a plurality of leather pieces, the structure is simple, and variation in the amount of swell of the leather at the abutting portion between the ends of each leather is caused. It has the effect of preventing and maintaining good aesthetics and quality.

[First Embodiment]
FIG. 1 is a diagram illustrating a schematic configuration of an instrument panel (instrument panel) 1 according to a first embodiment of the present invention, and FIG. 2 is a diagram illustrating a state in which the instrument panel 1 is disassembled. In FIG. 2, the leathers 6 and 7 are omitted.

  The instrument panel 1 is installed in front of a driver seat and a passenger seat under the windshield of an automobile, and includes a base material 3 made of resin or metal, and the base material 3 includes a plurality of pieces. Leather, 5, 6, 7 etc.

  More specifically, in a state where the edges of the leathers 5, 6, 7 are abutted (contacted) with each other, the back surfaces of the leathers 5, 6, 7 (the base material 3 side of the leathers 5, 6, 7 and the later-described The surface on the mesh layer side) is bonded to the base material 3 with an adhesive, and the base material 3 is covered with the leathers 5, 6, 7 and the like.

  Here, the leather 5 will be described in detail. Since the leathers 6, 7 and the like are configured in the same manner as the leather 5, the leather 5 will be described here, and the description of the leathers 6, 7, etc. will be omitted.

  The leather 5 is so-called natural leather, has a coating film (coating layer) on the surface, is formed in a sheet shape, and covers the base material 3 as described above. The leather used in the present invention is not limited to natural leather, but may be artificial leather that is artificially formed into a sheet and has the above-mentioned coating film on its surface. is there.

  As is well known, the natural leather used in the present invention uses animal dermis. When the cross section is observed, the silver surface layer 2500 and the mesh layer 1700 are removed from the skin side removed by tanning or the like. The above-mentioned coating layer 3100 is formed on the skin surface (skin surface side) of the silver surface layer for the purpose of waterproofing, antifouling and glossing (see FIG. 4A). In general, the silver layer 2500 tends to be hard with high mechanical strength and the like, and the network layer 1700 in which thick fibers are three-dimensionally arranged loosely has a strength and the like. It tends to be relatively low and soft.

  A superposed part 9 is formed at the edge of the leather 5. Here, the superposition | polymerization part 9 is demonstrated.

  3 and 4 are diagrams showing a formation process and a configuration of the overlapping portion 9, and FIG. 4C is a diagram showing a cross section taken along the line IV-IV in FIG.

  The overlapping portion 9 (see FIG. 4C) is thin at the boundary (step) 15 (see FIG. 4B) between the thin portion 11 and the portion 13 of the leather material 20 where the thin portion 11 is not formed. The leather material 20 is folded and bonded with an adhesive so that the portion 11 and the back surface 17 of the leather material 20 are in contact with each other. The overlapping portion 9 is formed at the edge 19 of the leather 5.

  The thin-walled portion 11 has a predetermined depth d1 at a portion on the back surface 17 side of the leather material 20 along the edge 21 of the leather material 20 (leather before the overlapping portion 9 is formed; see FIG. 4A). Further, it is removed in a predetermined width b1 to form a strip (see FIG. 4B).

  Further, the thickness t1 of the thin portion 11 is about 1/5 to 1/2 times the thickness 13 of the portion 13 of the leather material 20 (preferably about 1/2 times the thickness). The width b1 of the thin portion 11 is about 3 to 10 times the thickness t3 (preferably 5 to 6 times the width).

  Therefore, the thickness t5 of the overlap portion 9 is substantially equal to the sum of the thickness t1 of the thin portion 11 and the thickness t3 of the portion 13 of the leather material 20, and the width b3 of the overlap portion 9 is equal to the thin portion 11. Is slightly smaller than the width b1 (see FIG. 4C).

  In addition, a part of the overlapping portion 9 of the leather 5 is removed by the ski portion 23. In other words, the formation of the overlapped portion 9 allows the reversal portion 27 of the leather material 20 located on the back surface 17 side of the leather material 20 from the front surface 25 side (the aforementioned silver surface layer side) of the leather material 20. The front surface side (silver surface layer side) is removed by a predetermined thickness t7 by the belt-like skid portion 23 (see FIG. 4C).

  The removed thickness t7 is thinner than the thickness t1 of the thin portion 11 (for example, about half of the thickness t1), and the thickness t9 of the overlapping portion 9 is provided by providing the ski portion 23. However, it is preferable to make it slightly thicker than the thickness t3 of the region 13 of the leather material 20 (see FIG. 5A).

  More preferably, only the coating layer 3100 that acts to reduce the adhesive force is removed, and the silver surface layer 2500 on the front side is preferably removed as much as possible. Thereby, since the silver surface layer 2500 having relatively high properties such as adhesive strength is directly bonded to the base material 3 via the adhesive, the bonded surfaces of the abutted edge portions are firmly fixed to the base material 3. When the instrument panel 1 becomes a product, a product having high durability can be provided.

  Further, in the case of the above-described embodiment, the reversal portion 27 where the ski portion 23 is formed by the skiving is already formed in a substantially flat shape in the folded state, so that the ski portion 23 has a uniform thickness. In addition, it has a ripple effect that the coating film can be removed without any unevenness across the entire processed portion.

  Further, there may be a case in which the seam 28 (see FIGS. 5A and 6) for stitching the portions of the respective leather materials 20 forming the superposition part 9 is provided in the superposition part 9. The seam 28 is provided along the edge 30 of the overlapping portion 9.

  Thus, by providing the seam 28, the folded portion and the portion joined to the folded portion can be firmly fixed, that is, the overlapping portion 9 can be made firm. When a twisting or peeling force is applied to the overlapping portion 9 provided with the seam 28, the leather 5 from the base material 3 is not peeled off by starting to peel off from the portion where the leather material of the overlapping portion 9 is folded and bonded.

  Next, a process for forming the overlapping portion 9 will be described.

  First, a sheet-shaped leather material 20 having an appropriate shape in which the overlapping portion 9 is not formed as shown in FIG. In addition, when the surface of the base material 3 is a curved surface, it is desirable to prepare the leather raw material 20 according to this curved surface.

  Subsequently, the portion on the back surface 17 side of the leather material 20 is removed at a predetermined depth d1 and a predetermined width b1 along the edge 21 of the leather material 20 to form a strip-shaped thin portion 11 (FIG. 4B). )reference).

  Subsequently, the back surface 11A of the thin portion 11 and the back portion of the leather material 20 on which the thin portion 11 is not formed, on the back surface 17 side, adjacent to the thin portion 11 and having the same width as the back surface 11A of the thin portion 11 An adhesive is applied to 17A.

  In this case, for example, a rubber-based pressure-sensitive adhesive is used because the pressure-sensitive adhesive has an adhesive force and takes a relatively long time to be cured. By using this method, when the reversal part 27 is folded and adhered, it is possible to correct the case where the folding width is shifted by using the property of not immediately curing, and until the leathers 5 and 7 are bonded to the base material 3. Since the pressure-sensitive adhesive is cured, the superposed portion 9 is firmly constructed when the leathers 5 and 7 are attached to the base material 3, and the butt-bonding portion of the superposed portion 9 is further firmly constituted. Become.

  Subsequently, at the boundary 15 between the thin portion 11 and the portion 13 of the leather material 20 where the thin portion 11 is not formed, the back surface portion 17A of the leather material 20 and the back surface 11A of the thin portion 11 are in contact with each other (see above). The leather material 20 is folded back so that the back surfaces to which the adhesive has been applied are attached to each other via the adhesive (see FIG. 4 (c)).

  In FIGS. 4 and 5, the edge 21 of the leather material 20 is described in a linear form in order to explain the basic content of the present invention. Become the configured edge. If the edge is straight, it is relatively easy to fold back the same width. However, in the case of the leather 5 that is attached to a portion of the base material 3 that is a three-dimensional solid and complicated curved surface like the instrument panel 1, the leather material 20 The shape is also complicated.

  It is difficult to fold the edge 21 of the leather material 20 with the same width, and if the fold position is shifted, a gap may be formed in the butt portion between the leather 5 and the leather 7 attached to the base material 3, or the leather. 5 Leather 7 overlaps and does not become a product. However, according to the leather 5, since the folding is performed at the step 15, it is easy to fold the edge portion with a uniform width.

  By the way, in the case where the seam 28 is provided without providing the ski portion 23 as described above, the seam 28 is provided after the overlapping portion 9 is formed.

  On the other hand, in the case where the above-described gap 23 and the seam 28 are provided, after the folded portion 9 is formed, the gap 23 is provided, and then the seam 28 is provided.

  Further, as shown in FIG. 5B, the back surface portion 17 </ b> A to which the thin portion 11 is folded and joined is removed by a slight thickness by providing the ski portion 29, and is removed by the ski portion 29. The thin part 11 may be joined to the part to form a superposed part. By removing the back surface portion 17A of the leather material 20 with the ski portion 29, the thickness of the overlapping portion 9 is reduced, and the thickness of the leather in the portion where the overlapping portion 9 is not formed and the portion where the overlapping portion 9 is formed It becomes easy to make the thickness of the leather in the case approximately the same.

  By the way, as described above, the thin coating 31 (coating layer 3100) formed on the front surface 25 is positioned on the back surface 17 side of the leather 5 when the overlapped portion 9 is formed by folding the leather material 20. However, if the skid portion 23 is provided as described above, the film 31 of the inverted reversal portion 27 that has been folded back from the overlapping portion 9 is removed, and a silver surface that will be described later is also provided. A portion of layer 2500 may also be removed.

  Here, although repeatedly described, in general, the front surface 25 of the leather 5 is a silver surface, and the back surface 17 of the leather 5 is a flesh surface.

  The silver surface and the meat surface will be described. For example, when considering cowhide as leather, the silver surface refers to the surface corresponding to the cow's skin surface (the surface on which the hair grew), and the meat surface refers to the surface on the meat side of the cow. Further, the fiber component constituting the leather is dense on the silver surface side and rough on the flesh surface side. Therefore, mechanical strength such as tensile strength is high on the silver surface side, and mechanical strength is low on the flesh surface side.

  A layer in which the fiber component is dense on the silver surface side is referred to as a silver surface layer 2500, and a layer in which the fiber component is sparse on the flesh surface side is referred to as the above-described network layer 1700.

  The base material 3 is covered with the leather 5, 6, 7 and the like configured as described above (see FIG. 1). In this covering, for example, as shown in FIG. 6 (cross-section VI-VI in FIG. 1), the edges 5 (edges of the overlapping portions 9) 30 of the leathers 5 and 6 are abutted (opposed and contacted). ) State, the back surface 17 (including the reverse part 27) of each leather 5, 6 is bonded to the base material 3.

  In addition, as shown in FIG. 6, in the state in which each leather 5 and 6 was affixed to the base material 3, the thickness t5 of the leather 5 in the site | part in which the superposition | polymerization part 9 is provided (the ski part 23 is provided). The thickness t9; see FIG. 4 (c)) is slightly thicker than the thickness t3 of the leather 5 in the portion where the overlapping portion 9 is not provided, so that the overlapping portion 9 is provided. A slight gap 33 is formed between the portion where the overlapping portion 9 is not provided and the portion where the overlapping portion 9 is not provided.

  Therefore, even if the pressure-sensitive adhesive applied to generate the polymerization portion 9 is slightly oozed out, the oozed pressure-sensitive adhesive stops in the gap 33, and the oozed pressure-sensitive adhesive and the leather 5 are combined with the base. It is possible to prevent the back surfaces 17 of the leathers 5 and 6 from being adhered to the base material 3 in a state where the adhesive for adhering to the material 3 is mixed, and the adhesive strength of the leathers 5, 6 and 7 is reduced. Can be prevented.

  Here, a strength test result when the superposed portion 9 of the leather 5 is attached to the base material 3 with an adhesive will be described.

  In the test, leather 5 and 5 provided with a superposed portion 9 provided with a ski portion (ski portion provided at the reversal part 27) 23 was measured for the strength of attaching the superposed portion 9 of the leather 5 in FIG. As shown in the figure showing the method when doing this, it was affixed to the substrate 3 with an adhesive, and a tensile load was applied in the direction of the arrow AR1. Therefore, in the state shown in FIG. 7, a shearing force is generated on the bonding surface between the overlapping portion 9 and the base material 3.

  FIG. 8 is a diagram showing a strength test result when the superposed portion 9 of the leather 5 is attached to the base material 3 with an adhesive.

  The vertical axis in FIG. 8 indicates the load when the leather 5 is separated from the base material 3 due to peeling of the overlapping portion 9 and the bonded portion. The unit “kgf” on the vertical axis in FIG. 8 means kilogram weight, and 1 kgf corresponds to 9.8 N (Newton).

  The horizontal axis in FIG. 8 indicates the width b1 of the thin portion 11 provided when forming the overlapping portion 9, and the unit is “mm”.

  Further, the thickness of the portion of the leather 5 where the overlapping portion 9 is not formed (thickness of the leather material 20) is 1.3 mm, and the leather 5 is in a direction perpendicular to the paper surface of FIG. It has a width of 15 mm.

  A graph G1 shown in FIG. 8 shows affixing strength of the leather in which the overlap portion 9 is formed with the thickness t1 of the thin portion 11 being 0.9 mm, and a graph G3 is a polymerization where the thickness of the thin portion 11 is 0.7 mm. The graph G5 shows the affixing strength of the leather in which the thinned portion 11 is formed with the thickness of the thin portion 11 being 0.5 mm, and the graph G7 shows the affixing strength of the leather in which the thin portion 11 is formed. The affixing strength of leather having a thickness of 0.3 mm and forming the polymerized portion 9 is shown. In addition, the seam is not provided in each superposition | polymerization part 9 for obtaining the result of each graph G1, G3, G5, G7.

  Graph G9 shows the affixing strength of the leather in which the thickness t1 of the thin portion 11 is 0.7 mm and the seam 28 is further provided to form the overlapped portion 9. Graph G11 shows the pasting strength of the conventional leather. Here, the conventional leather is also provided with the superposition | polymerization part. However, the overlapped part of the conventional leather forms a thin part with a predetermined width on the edge of the leather material, and stitches are stitched on the thin part, and a certain distance from the edge (for example, half of the thin part) The thin-walled portion is folded and bonded at a portion (bending line) (see, for example, JP-A-6-64546).

  As understood from the result of FIG. 8, except for the graph G9, the change in the adhesive strength when the width b1 of the thin portion 11 is 7 mm and the adhesive strength when the width b1 is 9 mm are small. The reason for this is that if the width b1 of the thin portion 11 is increased, the bonding area between the base material 3 and the overlapping portion 9 increases, but the folded portion (boundary) when the thin portion 11 is folded to form the overlapping portion 9 is formed. 15) The strength in the vicinity does not increase, and in the strength test, the vicinity of the folded portion is broken.

  Since the graph G9 is a test result of the leather provided with the seam 28, the thin portion 11 and the back surface 17 are combined, so that no breakage occurs. Therefore, the adhesive strength increases as the width b1 of the thin portion 11 increases.

  If the width b1 of the thin portion 11 is too large, it becomes difficult to crease the wrinkles that are formed when folded, or the adhesive at the portion where the leather material of the overlapped portion is folded and bonded is cured. If the thickness t1 of the thin-walled portion 11 is made too thick, there will be no sudden change in the thickness of the leather material, making it difficult to fold back accurately, or the thickness of the overlapped portion and the leather material (the thickness of the portion where the overlapped portion is not formed) The difference in size) increases, and the appearance and feel when the leather 5 is attached to the substrate 3 are deteriorated. Further, since a strength of about 5 kgf is sufficient as the pasting strength, as shown in the graph G3 and the graph G9, when the thickness of the thin portion 11 is about 0.7 mm and the width b1 is about 7 mm, it is practical. It is considered to be appropriate.

  According to the leather 5, the thickness of the leather material 20 changes abruptly at the boundary 15 between the thin portion 11 and the portion of the leather material 20 where the thin portion 11 is not formed. The leather material 20 is easy to bend. Therefore, the leather material 20 can be accurately folded back at the boundary 15, and the superposed portion 9 having an accurate shape can be formed at the edge of the leather 5.

  And if the superposition | polymerization part 9 is formed in the exact shape, when the shape of the whole leather 5 will become exact and it adhere | attaches on the base material 3, it can prevent that a clearance gap is made between the leathers 5, 6, and 7, Further, it is possible to prevent the leathers 5, 6, and 7 from being overlapped, and to improve the appearance and feel of the instrument panel 1.

  In addition to the shape of the boundary 15, a part where the thickness of the leather material changes rapidly may be provided instead of the boundary 15.

  Further, instead of the boundary 15, a linear small-rigid portion having a smaller bending rigidity than the other portions of the leather material 20 is formed along the edge 21 of the leather material 20, and the leather is formed at the small-rigid portion. The overlapping portion 9 may be formed at the edge of the leather 5 by folding the leather material 20 with an adhesive so that the back surfaces of the material 20 are in contact with each other. At this time, it is not always necessary to provide the thin portion as described above.

  As the small rigidity portion, a groove 35 (see FIG. 9A) formed along the edge 21 of the leather material 20, and a slit 37 formed along the edge 21 of the leather material 20 (FIG. 10A). )), The thickness of the leather material 20 rapidly changes, such as a deformed portion 39 (see FIG. 10D) formed by a press (for example, a heat press) formed along the edge 21 of the leather material 20. A plurality of holes formed at predetermined intervals along the edge 21 of the leather material 20 (thickness direction of the leather material 20). Or a hole 41 that passes through the leather material 20 or a hole that stops in the middle without passing through the leather material 20; see FIG. 10C. Further, the holes 41 may be formed in a slit shape, and a thread may be passed through each hole 41 to produce a decorative effect, for example.

  Further, the groove 35 shown in FIG. 9A has a rectangular cross section, but as shown in FIG. 10B, other shapes such as a groove 43 having a V-shaped cross section are provided. The groove may be adopted.

  And if the small rigidity part where rigidity is small compared with other parts is formed along the end edge, and the superposition part 9 is formed by folding the leather material 20 at this small rigidity part, the above-mentioned As in the case where the thickness of the leather material 20 is rapidly changed as described above, it is possible to form the overlapping portion 9 having an accurate shape.

  Meanwhile, the groove 35 may be formed and a thin portion may be provided, and the thin portion may be folded back at the groove 35 to form a superposed portion.

  For example, as shown in FIG. 9 (b), a groove 35 may be provided in the intermediate portion in the width direction of the thin portion 45, or the thin portion 45 and the thin portion 45 are formed as shown in FIG. 9 (c). You may provide the groove | channel 35 in the location of the boundary with the site | part of the leather material which is not made.

  Moreover, as shown in FIG.9 (d), you may form the thin part 47 so that it may become a shape (a cross section is trapezoid shape, for example) which becomes thin as it goes to the edge of a leather raw material.

  Furthermore, as shown in FIG. 10 (d), the slit 37 as shown in FIG. 10 (a), the groove 43 as shown in FIG. 10 (b), the multiple holes 41 as shown in FIG. 10 (c). Even when a small rigidity portion such as the deformable portion 39 is provided, the thin portion as described above may be provided.

  According to the leather 5, the overlapping portion 9 is provided at the edge, and the thickness t9 of the overlapping portion 9 is larger than the thickness t3 of the portion where the overlapping portion is not formed (the overlapping portion non-forming portion). Since it is only slightly thick, when the base material 3 is covered with the leather 5, the form of the leather butting portion 49 is good as in the case where the base material 3 is provided with a groove without providing grooves. Can be in a state.

  That is, since the overlapping portion 9 is provided at the edge, the end face (cut surface) of the leather material is not exposed at the abutting portion 49 of each leather 5, 6, 7, and the appearance of the instrument panel 1 is improved. In addition, since the thickness t9 of the overlapping portion 9 is only slightly thicker than the thickness t3 of the overlapping portion non-forming portion, the base material is a butt portion 49 between the edges 30 of the leathers 5, 6, and 7. The leathers 5, 6 and 7 hardly protrude in the direction away from 3 (do not rise), and the appearance of the instrument panel 1 is good.

  Moreover, since it is not necessary to provide a deep groove for the texture in the base material 3 of the instrument panel 1, the shape of the base material 3 can be simplified.

  Therefore, when the base material 3 is manufactured by molding, for example, it is possible to avoid the complexity of the mold, to reduce the manufacturing cost of the mold, and to cause the base material 3 to be undercut. Can be avoided, and the degree of freedom in designing the base material 3 (instrument panel 1) is increased.

  Furthermore, since the base material 3 is not provided with a groove, even if it is a base material of one type, it can be coated with different leather arrangements.

  Moreover, when covering the base material 3 of the instrument panel 1 with leather, it is not necessary to rub, and it is only necessary to match the ends of the leathers and adhere and attach the leather, so the base material 3 is covered with leather. It is possible to reduce the work man-hour when performing.

  Furthermore, according to the leather 5, since the coating (coating) 31 is removed by providing the ski portion 23 at the inversion portion 27, the adhesive strength of the leather to the base material 3 is high.

  Therefore, the surface of the overlapping portion 9 from which the coating 31 has been removed is adhered to the base material 3, whereby the adhesive strength of the leather to the base material 3 can be increased. The peeling of the leather (particularly the peeling of the leather due to a change over time) from the base material 3 can be prevented, and the situation where the butted portion 49 is opened and the base material 3 is exposed can be avoided.

  Moreover, according to the leather 5, since the leather 5 is bonded to the base material 3 with the silver surface having high mechanical strength facing outside, it is possible to avoid scratching the leather 5 as much as possible, Since the surface with high mechanical strength is painted, the strength of the coating is also high.

  Moreover, according to the leather 5, since the seam 28 is provided in the superposition | polymerization part 9, a high-class feeling can be produced and a touch becomes favorable.

  Further, according to the instrument panel 1, since the overlapped portion formed by folding the thin portion is formed at the end of each leather 5, 6, 7, each leather 5, 6, 7 is formed like a split stitch structure. It is possible to prevent variation in the amount of swell of the leather at the end-to-end portion between the two ends, and to keep the aesthetics and quality of the instrument panel 1 good.

  Further, according to the instrument panel 1, since the base material 3 is covered with a plurality of pieces of leather, if the leather is appropriately divided in accordance with the shape of the base material 3, the complicated three-dimensional shape of the base material 3 It becomes easy to cover the surface with each leather. Further, since the leather can be attached to the base material 3 one by one, the work of attaching the leather to the large base material 3 can be performed by one operator, or the leather can be attached to the base material 3. It becomes easy to automate the pasting operation using a machine, and the instrument panel 1 can be manufactured efficiently.

  By the way, you may change the form of a thin part, as shown in FIG. 11 (The figure which shows the modification of the form of a thin part).

That is, when viewed et suited stretching side edge 207 of the leather material 200, the thin portion 201 of the leather material 200, the shape formed so as to gradually thicker toward the boundary 205 to the edge 207 of the leather material 200 May be. The boundary 205 is a boundary (step) between the thin portion 201 and the portion 203 of the leather material 200 where the thin portion 201 is not formed.

Further, when viewed et suited stretching side edge 207 of the leather material 200, a surface present in the boundary 205; 209 (plane substantially parallel to the thickness direction of the leather 200 face constituting the step), the thin portion The part side 211 of the leather material 200 where 201 is not formed is located on the side away from the edge 207 of the leather material 200 (the left side in FIG. 11A), and the thin portion side 213 is the edge 207 of the leather material 200. It may be configured to be slightly inclined so as to be located on the side (the right side of FIG. 11A).

  According to the instrument panel 1, each surface 209, 215 of the thin portion 201 is formed obliquely as shown in FIG. 11 (a), so when the overlapping portion 9 is formed as shown in FIG. 11 (b). Further, the angle θ of the part of the leather material 200 on the side facing the base material 3 (the end of the leather material where the thin part is not formed) becomes an obtuse angle, and the part of the leather material 200 where the thin part 201 is not formed When the thin portion 201 is pasted to 203, the deformation amount (bending angle) of the thin portion 201 can be reduced, and therefore the work of pasting the thin portion 201 to the portion 203 is facilitated, and this pasting is performed. Even later, the thin portion 201 is difficult to peel off from the portion 203.

  In addition, when the angle θ is a right angle or an acute angle, when the thinned portion 201 is pasted to form a superposed portion, the superposed portion may rise as shown by a two-dot chain line L1 in FIG. However, since the angle θ is an obtuse angle, it is possible to eliminate the possibility of swell as shown by a two-dot chain line L1 in FIG. And when leather is affixed to the base material 3, it can prevent that a leather swells greatly in the edge part (polymerization part) of leather, and prevents that the appearance and the touch of the instrument panel 1 deteriorate. Can do.

  Further, it is desirable that the thickness of the thin wall portion 201 is substantially constant as shown in FIG. 4B, but the vicinity of the edge 207 of the leather material 200 is cut using a device or machine. It is difficult to keep the thickness of the thin portion 201 substantially constant because the leather material 200 is a member that is easily deformed when trying to form the thin portion 201 having a substantially constant thickness. In the processing of the material 200, the surface 215 of the thin portion 201 is inclined as shown in FIG. 11A, or is inclined at a gradient opposite to that in FIG. Variations in the thickness trend of

  Therefore, as shown in FIG. 11A, the thin portion 201 is manufactured so as to be always thicker on the edge 207 side of the leather material 200. If the thin portion 201 is formed so as to become slightly thinner toward the end edge 207 (if the surface 215 is formed obliquely with a gradient opposite to that in FIG. 11A), the thin portion When the overlapped part 201 is formed to form the overlapped part, there is a possibility that the boundary between the thin part 201 and the part 203 other than the thin part is not clear, and the part to be folded may vary. When the thinned portion 201 is formed so as to be slightly thicker toward the edge 207, when the thinned portion 201 is folded back to form the overlapped portion 9, the portion to be folded back becomes clearer and accurate folding is performed. can do.

  In FIG. 11A, the surface 215 of the thin portion 201 is formed as an oblique straight line. However, as shown by the broken line L3 in FIG. May be. In FIG. 11B, the upper surface of the thin portion 201 is slanted. However, when the thin portion 201 is folded back to form the overlapping portion 9, the upper surface of the thin portion 201 is pressed, so the thin portion 201 In the finished product, the upper surface of the thin-walled portion 201 becomes substantially horizontal as indicated by a broken line L5 in FIG.

[Second Embodiment]
FIG. 12 is a diagram showing a schematic configuration of a door panel (panel installed inside the door of an automobile) 101 according to the second embodiment of the present invention.

  The door panel 101 according to the second embodiment is covered with a leather similar to the leather covering the instrument panel 1 according to the first embodiment, and the instrument panel 1 according to the first embodiment. Has almost the same effect.

  That is, the door panel 101 is configured by covering the base material 103 with a plurality of pieces of leather 105, 107, 109, 111, 113, 115, 117, 119, etc. configured in the same manner as the leather 5.

  The instrument panel 1 and the door panel 101 are examples of an inner wall member of an automobile.

It is a figure which shows schematic structure of the instrument panel which concerns on the 1st Embodiment of this invention. It is a figure which shows the state which decomposed | disassembled the instrument panel. It is a figure which shows the state which has folded and formed the superposition | polymerization part of leather. It is a figure which shows the formation process and structure of a superposition | polymerization part. It is a figure which shows the formation process and structure of a superposition | polymerization part. It is a figure which shows the VI-VI cross section in FIG. It is a figure which shows the method when measuring the affixing strength of superposition | polymerization of leather. It is a figure which shows the strength test result when the superposition | polymerization part of leather is affixed on the base material with the adhesive agent. It is a figure which shows the modification of a small rigid part, and the modification of a thin part. It is a figure which shows the modification of a small rigidity site | part. It is a figure which shows the modification of the form of the thin part in a leather raw material. It is a figure which shows schematic structure of the door panel which concerns on the 2nd Embodiment of this invention.

Explanation of symbols

1 Instrument panel 3 Base material 5, 6, 7 Leather 9 Superposed part 11 Thin part 101 Door panel 103 Base material 105, 107, 109, 111, 113, 115, 117, 119 Leather 200 Leather material 201 Thin part 209 face 215 face

Claims (4)

A substrate;
A superposed portion formed by folding back the leather material so that the back surfaces of the leather material are in contact with each other at a small rigidity portion formed along the edge of the leather material and having a small bending rigidity, and an edge of each superposed portion There a leather plurality pieces covering the surface of the substrate so as to face each other; have a,
In the leather, the small-rigidity portion is formed in an intermediate portion in the width direction of a strip-shaped thin portion formed by removing a portion on the back side of the leather material with a predetermined width along an edge of the leather material. Or, the small rigid portion is formed at the boundary between the thin portion and the portion of the leather material where the thin portion is not formed,
An inner wall member of an automobile. A substrate;
Along the edge of the skin leather material of the leather material thin portion of the back side strip-like sites formed by removing a predetermined depth and a predetermined width of the thin portion Toko is not formed of the leather material A superposition part formed by folding the leather material so that the back surfaces of the leather material are in contact with each other at the boundary with the part, and the surface of the base material is arranged so that the edges of the superposition parts face each other Covering a plurality of pieces of leather;
An inner wall member of an automobile. The inner wall member of the automobile according to claim 2,
When viewed from the extending direction of the edge of the leather material, the thin-walled portion of the leather material, the edges of the leather from the boundary between portions of the leather material, wherein the thin-walled portion and the thin portion is not formed gradually are those is thicker, and the case where viewed from the extending direction of the edge of the leather material, the boundary between the portion of the leather material, wherein no said thin-walled portion thin portion is formed toward the The side of the leather material where the thin part is not formed is located on the side away from the edge of the leather material, and the thin part side is located on the edge side of the leather material. , Slightly slanted,
An inner wall member of an automobile. In the inner wall member of the automobile according to any one of claims 1 to 3,
In the overlapped portion of the leather , a seam for stitching together the leather material forming the overlapped portion is provided along the edge .
The inner wall member of the motor vehicle, characterized in that.

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