JP2016107741A - Vehicle interior component - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a skin material for a vehicle interior component appropriate for reducing the cost of the skin material through, for example, a reduction in the number of components of the skin material and for improving workability in bonding the skin material to a resin core material.SOLUTION: A skin material A is composed of a pair of skin piece materials 1, 2. The respective parts of the skin piece materials 1, 2, in the vicinity of terminals 1A, 2A, are superposed and sewn together. The skin material has a form in which each skin piece material 1, 2 is extended having a sewn part 4 as a base point. The skin material also has a form in which at least one of the respective terminals 1A, 2A of the skin piece materials 1, 2 located further forward than the sewn part 4 is cured by heat treatment. The cured part is bonded to the surface of the resin core material while inserted in the recessed part of the resin core material.SELECTED DRAWING: Figure 1

Description

  The present invention relates to a skin material that is affixed to the surface of a resin core material that constitutes an interior part for a vehicle. In particular, the cost of the skin material is reduced by reducing the number of parts that constitute the skin material, and the skin material for the resin core material. It is intended to improve the pasting workability.

  2. Description of the Related Art Conventionally, door trims are well known as interior parts for vehicles, and this type of door trim has a form in which a skin material is pasted on the surface of a resin core material. In addition, as a means for improving the appearance of the skin material constituting the door trim of such a form, a material constituted by a pair of skin piece materials having different characteristics such as touch, color, material, etc. is known (for example, , See FIG. 2 of Patent Document 1).

  FIG. 4 is an explanatory view of a conventional skin material constituting an interior part for an automobile (for example, a door trim) and a process of attaching this to the surface of a resin core material. The skin material A of the figure is formed in a form in which the skin piece materials 1 and 2 are developed with the stitching portion 4 as a base point, with the vicinity of the ends 1A and 2A of the pair of skin piece materials 1 and 2 overlapped and sewn together with a thread S. It has become.

  Then, the skin material A of FIG. 4 that has been sewn and developed as described above has inserted the terminals 1A and 2A of the skin piece materials 1 and 2 positioned before the stitched portion 4 into the recess B1 of the resin core material B. It is affixed on the surface of the resin core material B in a state (see, for example, FIG. 2 of Patent Document 1).

  By the way, in the conventional skin material A of FIG. 4, in the operation | work which inserts the terminal 1A, 2A of each skin piece material 1 and 2 located ahead of the sewing part 4 in the recessed part B1 of the resin core material B, each skin to insert If the terminals 1A and 2A of the piece materials 1 and 2 are hooked on the edge of the recess B1 of the resin core B and cracked into two, the skin material A is smooth against the resin core B due to such cracks and collapses. Sticking work is hindered.

  Therefore, in the conventional skin material A of FIG. 4, the terminals 1 </ b> A and 2 </ b> A of the skin piece materials 1 and 2 to be inserted are hardened by bonding of the hot melt film F as described above.

  However, according to the conventional skin material A of FIG. 4, since the hot melt film F is used as described above, the number of parts constituting the skin material A is large, and the hot melt film F is bonded. There is a problem that the cost of the skin material A is inevitably increased because work and equipment necessary for the bonding (hereinafter referred to as “hot melt film bonding equipment”) are required.

JP 2011-194932 A

  The present invention has been made to solve the above-mentioned problems, and its purpose is to reduce the cost of the skin material by reducing the number of parts constituting the skin material, and the workability of attaching the skin material to the resin core material. It is in providing the skin material of the interior component for vehicles suitable for aiming at the improvement of this.

  In order to achieve the above object, the present invention provides a skin material to be affixed to the surface of a resin core material constituting an interior part for a vehicle, wherein the skin material is composed of a pair of skin piece materials, and each skin At least one of the end pieces of the skin piece material positioned before the stitched portion, and the form in which each piece of the skin piece material is developed with the stitched portion as a base point The terminal itself is in a form cured by heat treatment, and the cured part is pasted on the surface of the resin core material in a state of being inserted into the recess of the resin core material.

  In the present invention, as a specific configuration of the skin material of the vehicle interior part, as described above, a configuration is adopted in which the terminal of each skin piece material positioned before the stitched portion is cured by heat treatment. . For this reason, the hardened part by the heat treatment exists as one lump and does not easily separate, so the end of each skin piece material positioned before the stitched part is bonded by hot melt film as in the past. There is no need to harden, and the hot melt film can be omitted, so the number of parts constituting the skin material can be reduced, and the hot melt film bonding work and hot melt film bonding equipment can be eliminated. A skin material for an interior part for a vehicle suitable for reducing the cost of the material can be provided.

  In addition, according to the present invention, as described above, since the end of each skin piece material positioned before the stitched portion is cured by heat treatment, the end is the edge of the recess of the resin core material. It will not be hindered by the cracking and falling into two parts, and the smooth pasting work of the skin material to the resin core material will not be hindered by such cracking or falling, and also improve the workability of the skin material. A skin material for a suitable automotive interior part can be provided.

FIG. 1 is an explanatory view of a manufacturing process of a skin material to which the present invention is applied, in which (a) is a sectional view of a pair of skin piece materials used in the manufacturing process, and (b) is a terminal of each skin piece material. Explanatory drawing of the process (sewing process) of overlapping and sewing together, (c) is a perspective view of the stitched skin piece material, (d) is an explanatory diagram of the state in which each skin piece material is unfolded in the unfolding process after the stitching process. (E) is explanatory drawing of the state which the terminal itself of each skin piece material hardened | cured by heat processing in the heat processing process after a sewing process. Sectional drawing of the state which affixed the skin material to which this invention is applied to the surface of the resin core material. Explanatory drawing of the heat processing jig | tool. Explanatory drawing of the process which affixes this on the surface of the conventional skin material which comprises the interior components (for example, door trim) for motor vehicles, and this.

  Hereinafter, the best mode for carrying out the present invention will be described in detail with reference to the accompanying drawings.

  FIG. 1 is an explanatory diagram of a manufacturing process of a skin material to which the present invention is applied, in which (a) is a sectional view of a pair of skin piece materials used in the manufacturing process, and (b) is each skin piece. (C) is a perspective view of the stitched skin piece material, (d) is the development of each skin piece material in the unfolding process after the stitching process. Explanatory drawing of the state which did, (e) is explanatory drawing of the state which the terminal itself of each skin piece material hardened | cured by heat processing in the heat processing process after a sewing process. Moreover, FIG. 2 is sectional drawing of the state which affixed the skin material to which this invention is applied to the surface of the resin core material.

  In the manufacturing process of FIG. 1, the pair of skin piece materials 1 and 2 shown in FIG. 1A is used, and a cushion material 3 made of a urethane material or the like is attached to the back surface of each of the skin piece materials 1 and 2. Although attached, this cushion material 3 can be omitted if necessary.

  As the material of the skin piece materials 1 and 2, materials that are cured by heat treatment are used. Examples of the material include, but are not limited to, polyvinyl chloride (PVC) and thermoplastic olefin (TPO). The material of the cushion material 3 is not limited to a material that is cured by heat treatment, and a material that is not cured by heat treatment, such as a urethane material, may be employed as the cushion material 3.

  In the sewing step of FIG. 1 (b), the surface of each skin piece material 1 and 2 (specifically, the surface to which the cushion material 3 is not attached) are opposed (see FIG. 1 (a)), and each In the state where the terminals 1A and 2A of the skin piece materials 1 and 2 are aligned, the vicinity of the terminals 1A and 2A of the skin piece materials 1 and 2 are overlapped and sewn together with the thread S (see FIG. 1C).

  In the unfolding step of FIG. 1 (d), the skin piece materials 1 and 2 are unfolded as shown in FIG. 1 (d) with the stitched portion (hereinafter referred to as “sewn portion 4”) as a base point. In the same figure (d), as an example of the development, an example is shown in which each of the skin piece materials 1 and 2 is developed so as to form a flat surface as a whole, but is limited to this development example. Never happen.

  In the heat treatment step of FIG. 1 (e), the terminals 1A and 2A of the skin piece materials 1 and 2A located before the stitching portion 4 are subjected to heat treatment, whereby the terminals of the skin piece materials 1 and 2 are processed. 1A and 2A are melted and hardened. The portion that has been melted and hardened in this manner (hereinafter referred to as “cured portion 5”) exists as one lump and is not easily separated.

  Thus, the skin material A to which the present invention is applied is completed. As can be seen from the above description, the completed skin material A is composed of a pair of skin piece materials 1 and 2, and the seams of the skin piece materials 1 and 2 near the terminals 1 </ b> A and 2 </ b> A are stitched together, and the stitched portion 4. And the terminal 1A, 2A itself of each skin piece material 1 and 2 located before the stitching portion 4 is hardened by heat treatment. . Then, as shown in FIG. 2, the completed skin material A is affixed to the surface of the resin core material B in a state where the hardened portion 5 by the heat treatment is inserted into the recess B <b> 1 of the resin core material B.

  The resin core material B is a resin core material that constitutes a vehicle interior part such as a door trim, and a concave portion B1 corresponding to the cured portion 5 is formed on the surface of the resin core material B. Moreover, about the sticking system of the skin material A with respect to this resin core material B, various systems, such as a system using a hot-melt-adhesive material, are employable, for example.

  For the above heat treatment, a method using a soldering iron or a method using the heat treatment jig of FIG. 3 can be employed. In addition, heat treatment using a known ultrasonic heat generation phenomenon can also be employed.

  In the case of the method using the soldering iron, the soldering iron tip is applied to the terminals 1A and 2A of the skin piece materials 1 and 2 positioned before the stitching portion 4, and the terminals 1A and 2A. The ends 1A and 2A of the skin piece materials 1 and 2 may be melted and hardened by the heat of the reciprocating iron tip, for example, by reciprocating the iron tip twice in the width direction.

  The heat treatment jig 10 in FIG. 3 includes a cradle 11 having a skin material set recess 11A, a heat transfer device 12 built in the inner surface of the skin material set recess 11A, and an upper side to a lower side of the skin material set recess 11A. A skin material pressing member 13 that can move up and down is provided. In the heat treatment jig 10 having such a configuration, the terminals 1A and 2A of the respective skin piece materials 1 and 2 located before the stitching portion 4 are set so as to abut against the heat transfer device 12, and set. In a state where the skin piece materials 1 and 2 are pressed against the cradle 11 by the skin material pressing member 13, the heat transfer device 12 is operated by operating a switch (not shown). Thereby, the terminals 1A and 2A of the skin piece materials 1 and 2 are melted and hardened by heat from the heat transfer device 12.

  According to the skin material A of the present embodiment described above, as a specific configuration, the terminals 1A and 2A themselves of the skin piece materials 1 and 2 positioned before the stitching portion 4 as described above are cured by heat treatment. The structure which becomes is adopted. For this reason, since the hardened part 5 by the heat treatment exists as one lump and does not easily separate, the terminals 1A and 2A of the skin piece materials 1 and 2 positioned before the stitching part 4 are connected to the conventional one. Thus, the hot melt film F need not be hardened and the hot melt film F can be omitted, so that the number of parts constituting the skin material A can be reduced and the hot melt film bonding equipment can be eliminated. Can do.

  Further, according to the skin material A of the present embodiment, as described above, the terminals 1A and 2A of the skin piece materials 1 and 2 positioned before the stitching portion 4 are cured portions 5 in a form in which they are cured by heat treatment. Therefore, the terminals 1A and 2A are hooked on the edge of the concave portion B1 of the resin core material B and split into two to fall down, or the skin material A with respect to the resin core material B due to such a crack or collapse. The smooth pasting work is not hindered, and the workability of pasting the skin material A is excellent.

  The present invention is not limited to the embodiments described above, and many modifications can be made by those having ordinary knowledge in the art within the technical idea of the present invention.

  For example, the skin piece materials 1 and 2 in the embodiment described above can be cured by melting both terminals 1A and 2A by heat treatment. However, in the present invention, at least one of the terminals 1A and 2A has at least one terminal. It can also be applied to those that melt and harden by heat treatment. As a specific example of the application, for example, when the skin piece material 1 is made of a material that melts, the skin piece material 2 may be made of a material that does not melt, such as a cloth.

1, 2 Skin piece material 1A, 2A End of skin piece material 3 Cushion material 4 Stitching part 5 Curing part 10 Heat treatment jig 11 Receptacle 11A Skin material set recess 12 Heat transfer device 13 Skin material pressing member A Skin material B Resin core Material B1 Recess of resin core material F Hot melt film S Thread

Claims (1)

A skin material affixed to the surface of a resin core material constituting an interior part for a vehicle,
The skin material is composed of a pair of skin piece materials, and the vicinity of the ends of each skin piece material is overlapped and sewn together, and each skin piece material is developed with the stitched portion as a base point, and before the stitched portion. The surface of the resin core material in a state where at least one of the terminals of each skin piece material positioned is cured by heat treatment, and the cured portion is inserted into the recess of the resin core material A skin material for interior parts for vehicles, characterized in that it is affixed to.

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