JP2017132274A - Interior trim for vehicle and method of manufacturing the same - Google Patents

Abstract

PROBLEM TO BE SOLVED: To fix a skin material on a core material in such a manner as the former does not rise from the latter in a relatively simple configuration.SOLUTION: Between a core material 10 and a skin material 20, an urethane sheet 30 is pinched. The skin material 20 includes a first skin member 21 and a second skin member 22. A junction part 25 is provided by stitching the first skin member 21 and the second skin member 22 in a state where surface sides are abutted with each other. On the side closer to the core material 10 than the junction part 25, a protrusion part 26 is provided. On the side closer to the core material 10 than the protrusion 26, a protrusion member 27 having an engagement claw 28 is provided. An open hole 15 is formed at the core material 10, and by inserting the protrusion member 27 into the open hole 15 for engagement with the engagement claw 28, the skin material 20 is fixed to the core material 10.SELECTED DRAWING: Figure 2

Description

  The present invention relates to a vehicle interior product and a method for manufacturing the same.

  2. Description of the Related Art Conventionally, a vehicle interior product in which a cushion material is sandwiched between a core material and a skin material is known (see, for example, Patent Document 1).

  In Patent Document 1, a split skin is sewn along a split line, and a clip strip is sewn and integrated on the back surface thereof, and then the insertion leg portion of the clip strip is press-fitted and fixed in the grained groove portion of the core material. The configuration described above is disclosed. Thereby, the positioning accuracy of the division line and the stitch line is increased.

Japanese Patent Laid-Open No. 2005-53435

  However, in the invention of Patent Document 1, it is necessary to separately provide a clip strip for positioning and fixing the skin and the core material, and there is a problem that the number of parts increases and costs increase.

  Moreover, if the leg for insertion of the clip strip is only press-fitted into the grain groove portion of the core material, the clip strip may come off from the grain groove portion and the skin may float.

  This invention is made | formed in view of this point, The objective is to enable it to fix so that a skin material may not float from a core material with a comparatively simple structure.

  The present invention comprises a core material, a skin material that is integrally formed by joining the edge sides of adjacent skin members and covering the core material, and a cushion material sandwiched between the core material and the skin material. The following solutions were taken for the vehicle interior parts provided.

That is, in the first invention, the skin material is
A joint portion provided at a joining position of the adjacent skin members, and joined in a state where the surface sides of the skin members are in contact with each other;
A projecting portion formed by an edge portion of the skin member projecting toward the core material side from the joint portion;
A protrusion piece provided on at least one of the protrusions of the adjacent skin member, and protruding toward the core material from the protrusion;
An opening hole into which the protruding piece can be inserted is formed in the core material,
The protruding piece is inserted into the opening hole and fixed to the core material.

  In 1st invention, the protrusion part which protrudes toward the core material side is provided in the edge part of an outer skin member. The protruding portion is provided with a protruding piece protruding toward the core material side, and the protruding piece is inserted into the opening hole of the core material and fixed. This can prevent the skin material from floating from the core material without increasing the number of parts.

  In addition, even when the skin material is pulled toward the core material, deformation of the skin material is suppressed by the tip of the protruding portion coming into contact with the core material, so that there is no sudden pull-in mark on the surface of the skin material, and the appearance is good. Can be secured.

According to a second invention, in the first invention,
The protruding piece is provided with an engaging claw that engages with the opening hole.

  In the second invention, since the engaging claw is provided on the protruding piece, the engaging claw engages with the opening hole only by inserting the protruding piece into the opening hole, so that the protruding piece cannot be removed. Work can be done easily.

According to a third aspect of the present invention, there is provided a core material, a skin material that is integrally formed by joining edge portions of adjacent skin members and covering the core material, and a cushion material sandwiched between the core material and the skin material For the manufacturing method of interior products for vehicles equipped with
Forming a fitting concave portion on one surface of the edge portion of the adjacent skin member, and forming a fitting convex portion that fits into the fitting concave portion on the other surface;
Forming at least one of the adjacent skin members a planned fracture portion such that a protruding piece is formed when a part of the edge portion of the skin member is broken; and
A step of fitting and positioning the fitting concave portion and the fitting convex portion of the adjacent skin member;
Joining in a state where the surface sides of the edge portions of the adjacent skin members are in contact with each other;
Forming the projecting piece by breaking the breakable portion;
Sandwiching the cushion material between the core material and the skin material;
And a step of inserting and fixing the protruding piece into an opening hole formed in the core material.

  In the third aspect of the invention, since the fitting recesses and the fitting protrusions are fitted together before the surface sides of the edge portions of the adjacent skin members are in contact with each other, the skin member The positioning accuracy between each other can be increased. Further, after joining the skin members, the protruding piece can be formed simply by breaking the portion to be broken, which improves workability.

  According to the present invention, the protruding piece provided at the edge of the skin member is inserted into the opening of the core material and fixed, thereby preventing the skin material from floating from the core material without increasing the number of parts. be able to.

  In addition, even when the skin material is pulled toward the core material, deformation of the skin material is suppressed by the tip of the protruding portion coming into contact with the core material, so that there is no sudden pull-in mark on the surface of the skin material, and the appearance is good. Can be secured.

It is a perspective view which shows the structure of the vehicle interior goods which concern on this embodiment. It is AA arrow sectional drawing of FIG. It is BB arrow sectional drawing of FIG. It is a perspective view which shows the state before inserting | pinching a urethane sheet between a skin material and a core material. It is side surface sectional drawing which shows the structure of a slush molding die. It is a perspective view which shows the structure of the 1st skin member after a slush molding, and a 2nd skin member. It is side surface sectional drawing which shows the state which has sewn the 1st skin member and the 2nd skin member with the suture. It is side surface sectional drawing which shows the state which expand | deployed the 1st skin member and the 2nd skin member. It is side surface sectional drawing which shows the state which forms the stitch pattern. It is a perspective view when a skin material is seen from the back.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings. It should be noted that the following description of the preferred embodiment is merely illustrative in nature and is not intended to limit the present invention, its application, or its use.

  In the following embodiments, for convenience of explanation, the front side in the vehicle front-rear direction is referred to as “front”, the rear side is referred to as “rear”, the left side in the vehicle width direction facing the front of the vehicle is “left”, and the right side is “right”. The upper side in the vehicle height direction is called “upper” and the lower side is called “lower”.

  FIG. 1 shows an upper panel 2 as an interior part for a vehicle constituting an upper part of an instrument panel 1 of a right-hand drive vehicle. The upper panel 2 includes a core material 10, a skin material 20 covering the core material 10, and a urethane sheet 30 (see FIG. 2) as a cushion material sandwiched between the core material 10 and the skin material 20.

  The core material 10 is injection-molded with a resin material such as polypropylene (PP) containing fibers, acrylonitrile-butadiene-styrene (ABS) resin, Noryl (registered trademark), or the like.

  The core material 10 extends in the vehicle width direction on the front end side of the vehicle body and is inclined obliquely downward toward the rear of the vehicle body. The core material 10 extends to the right side of the vehicle body from a substantially central position in the vehicle width direction of the first surface portion 11. It has the 2nd surface part 12 inclined diagonally downward toward the front, and the 3rd surface part 13 extended in the vehicle body left direction from the approximate center position of the 1st surface part 11 in the vehicle width direction. The second surface portion 12 constitutes a meter hood portion, and is curved so that the left end portion is directed downward.

  The rear edge portion of the first surface portion 11 is connected to the front edge portion of the second surface portion 12 and the front edge portion of the third surface portion 13 so as to be continuous. Further, the left edge portion of the second surface portion 12 is connected to the right edge portion of the third surface portion 13 so as to be continuous. As described above, the core material 10 has a surface shape that is three-dimensionally changed to a concave shape. A wall portion 14 is erected on the outer peripheral edge portions of the first surface portion 11, the second surface portion 12, and the third surface portion 13 (see FIG. 2).

  As illustrated in FIGS. 2 and 3, a urethane sheet 30 is laminated and attached to the first surface portion 11, the second surface portion 12, and the third surface portion 13 of the core material 10. The core material 10 and the urethane sheet 30 are covered with the skin material 20.

  The skin material 20 is formed by slush molding with an elastomer resin material such as thermoplastic urethane (TPU) or a resin material such as polyvinyl chloride (PVC).

  The skin material 20 includes a first skin member 21 covering the first surface portion 11 of the core material 10, a second skin member 22 covering the second surface portion 12, a third skin member 23 covering the third surface portion 13, and a second surface portion. 12 and a fourth skin member 24 covering the rear wall portion 14.

  The skin material 20 is integrally formed by joining edge portions of adjacent skin members. Specifically, the rear edge portion of the first skin member 21 is joined to the front edge portion of the second skin member 22 and the front edge portion of the third skin member 23. The left edge portion of the second skin member 22 is joined to the right edge portion of the third skin member 23. The fourth skin member 24 covers the rear wall portion 14 of the second surface portion 12, that is, the rear surface of the meter hood portion, and the upper edge is folded forward and joined to the rear edge portion of the second skin member 22. ing.

  As shown in FIG. 4, an opening 15 is formed in the core material 10. A plurality of opening holes 15 are formed at a boundary position between the first surface portion 11, the second surface portion 12, and the third surface portion 13 of the core material 10 with an interval in the vehicle width direction. Although not shown in the figure, a plurality of boundary positions between the second surface portion 12 and the third surface portion 13 of the core material 10 are formed at intervals in the longitudinal direction of the vehicle body.

  Hereinafter, the detailed structure of the first skin member 21 and the second skin member 22 will be mainly described.

  As shown in FIGS. 2 to 4, the first skin member 21 and the second skin member 22 are sewn and joined by a suture 35 in a state where the surface sides thereof are in contact with each other. Thereby, the joint portion 25 is provided at the joint position between the first skin member 21 and the second skin member 22. Each of the first skin member 21 and the second skin member 22 is formed with a curved section 29 having a concave cross section extending in the vehicle width direction along the joint portion 25. The curved portion 29 is provided with a stitch pattern 36.

  The edge portions of the first skin member 21 and the second skin member 22 form a protruding portion 26 that protrudes toward the core material 10 rather than the joint portion 25. The protruding portion 26 of the second skin member 22 is provided with a protruding piece 27 protruding toward the core material 10 side. A plurality of protruding pieces 27 are provided corresponding to the opening holes 15. The protruding piece 27 is provided with an engaging claw 28 that engages with the opening hole 15.

  The projecting piece 27 is inserted into the opening hole 15 so that the engagement claw 28 is engaged with the peripheral edge of the opening hole 15 so as not to come off. Thereby, the skin material 20 is fixed to the core material 10.

  With such a configuration, it is possible to prevent the skin material 20 from floating from the core material 10 without increasing the number of parts. Moreover, since the protrusion part 26 is provided in the edge part of the 1st skin member 21 and the 2nd skin member 22, even when the skin material 20 is drawn in to the core material 10 side, as shown in FIG. Since the deformation | transformation of the skin material 20 is suppressed because the front-end | tip part of 26 contact | abuts to the core material 10, a sudden drawing trace does not arise in the surface of the skin material 20, but it can ensure appearance.

  The rear end portion (right end portion in FIG. 2) of the second skin member 22 is folded downward and overlapped. The rear end portion (the right end portion in FIG. 2) of the second skin member 22 and the front end portion (the left end portion in FIG. 2) of the third skin member 23 are sewn and joined by a suture thread 35. Thereby, the joint portion 25 is provided at the joint position between the second skin member 22 and the third skin member 23.

  Hereinafter, a method for manufacturing the upper panel 2 will be described. As shown in FIG. 5, the first skin member 21 and the second skin member 22 are manufactured by slush molding. In the slush molding, the first skin member 21 and the second skin member 22 are molded as one substantially flat skin member.

  The slush mold 40 is formed with a molding surface for molding the surfaces of the first skin member 21 and the second skin member 22. On the molding surface, protrusions 41 for forming a thin portion 51 for separating one skin member into a first skin member 21 and a second skin member 22 are spaced apart in the left-right direction in FIG. Two are formed. The protrusion 41 extends over the entire length in the depth direction of the paper in FIG. The portion between the two protrusions 41 in one skin member is removed after breaking the skin member along the thin portion 51 and separating it.

  On the molding surface for molding the surface of the first skin member 21, a convex portion 42 for forming the fitting concave portion 52 and a convex portion for forming a relief hole 53 for avoiding interference with the engaging claw 28 (illustrated). Are omitted in FIG. 5 at intervals in the depth direction of the drawing.

  Further, on the left side of the convex portion 42 in FIG. 5, a first breaking convex portion 44 having a triangular cross section for forming the first planned fracture portion 54 is formed. The first breaking projection 44 extends over the entire length in the depth direction of the drawing in FIG. Further, a bulging portion 45 for forming a curved portion 29 provided with the stitch pattern 36 is formed on the left side in FIG.

  The molding surface for molding the surface of the second skin member 22 has a recess 46 for forming a fitting projection 56 that fits into the fitting recess 52 and a recess for forming the engaging claw 28 (not shown). ) Are formed at intervals in the depth direction of the paper surface in FIG.

  Further, on the right side in FIG. 5 with respect to the concave portion 46, a second breaking convex portion 47 having a triangular cross section for forming the second planned fracture portion 57 is formed. The second breaking projection 47 extends in a zigzag shape in the depth direction of FIG. 5 so that the protruding piece 27 is formed when a part of the edge of the first skin member 21 is broken. . Further, a bulging portion 45 for forming a curved portion 29 provided with the stitch pattern 36 is formed on the right side in FIG.

  Next, a procedure for forming the first skin member 21 and the second skin member 22 using the slash molding die 40 will be described. First, a slush mold 40 is heated by a heater (not shown), and a raw material storage box (not shown) in which powder resin raw materials such as TPU and PVC are stored with the molding surface facing downward. Set from below.

  Then, the slush mold 40 and the raw material storage box are inverted, and the powder resin raw material in the raw material storage box is attached to the molding surface of the slush mold 40. Thereby, the powder resin raw material adhering to the molding surface begins to be heated and melted at the mold temperature.

  Thereafter, the slush mold 40 and the raw material storage box are reversed to return to the original posture, and the excess powder resin raw material is dropped into the raw material storage box. Then, the slush mold 40 is removed from the raw material storage box and heated again by the heater. Thereby, the unmelted powder resin raw material adhering to the molding surface is completely melted to form a molten resin layer. Thereafter, the slush mold 40 is cooled by blowing air.

  Thereby, a molten resin layer hardens | cures and a skin member is shape | molded. A thin portion 51 is formed at a location corresponding to the protruding portion 41 of the formed skin member. Then, the first skin member 21 and the second skin member 22 can be obtained by peeling the skin member from the molding surface and breaking along the thin portion 51.

  As shown in FIG. 6, the first skin member 21 is formed with a fitting recess 52, a relief hole 53, a first planned break portion 54, and a curved portion 29. The second skin member 22 is formed with a fitting convex portion 56, an engaging claw 28, and a second planned fracture portion 57.

  Next, as shown in FIG. 7, the 1st skin member 21 and the 2nd skin member 22 are piled up so that the surface may mutually contact | abut. At this time, the first skin member 21 and the second skin member 22 are positioned by fitting the fitting concave portion 52 and the fitting convex portion 56 together.

  And the front-end | tip of the 1st skin member 21 and the 2nd skin member 22 is made to contact | abut to the guide part 61 of a sewing machine, and the 1st skin member 21 and the 2nd skin member 22 are made into the presser plate 63 and needle plate 64 of a sewing machine. The sewing machine 62 is moved up and down by operating the sewing machine while being sandwiched between them. As a result, the first skin member 21 and the second skin member are stitched together by the suture thread 35 and joined to each other along the stitching line L located inside the first fracture planned portion 54 and the second planned fracture portion 57. .

  Next, as shown in FIG. 8, the suture line L in the first skin member 21 and the second skin member 22, that is, the portion inside the joint portion 25 is deployed so as to be flush with each other, A portion of the first skin member 21 and the second skin member 22 outside the joint portion 25 is protruded on the back side. In this state, the first skin member 21 and the second skin member 22 are ruptured in the first skin portion 21 and the second skin member 22, so that the edge portions of the first skin member 21 and the second skin member 22 are broken. Remove some of the. As a result, the protruding portion 26 is formed at the edge portion of the first skin member 21, and the protruding portion 26 and the protruding piece 27 are formed at the edge portion of the second skin member 22.

  Thereafter, as shown in FIG. 9, the first skin member 21 and the second skin member 22 are sandwiched between the presser plate 63 and the needle plate 64 of the two-needle sewing machine, and the first skin member 21 and the second skin member The sewing machine 62 is moved up and down by operating the sewing machine in a state in which the curved portion 29 of 22 is made to correspond to the slit on the pressing plate 63 side and the slit on the needle plate 64 side. Then, a stitch pattern 36 is formed over the entire length of the curved portion 29 of the first skin member 21 and the second skin member 22. Thereby, manufacture of the skin material 20 is completed (refer FIG. 10).

  Next, as illustrated in FIG. 2, the urethane sheet 30 is attached to the surface of the core material 10, and the core material 10 and the urethane sheet 30 are covered with the skin material 20, so that the urethane sheet 30 is interposed between the core material 10 and the skin material 20. Is inserted.

  Then, the protruding piece 27 is inserted into the opening hole 15 of the core material 10 to engage the engaging claw 28, and the core material 10 and the skin material 20 are fixed. At this time, the engaging claw 28 can be easily engaged with the opening hole 15 by grasping the tip end portion of the protruding piece 27 protruding to the back side of the core material 10 and drawing the protruding piece 27 into the opening hole 15. In addition, the outer peripheral edge portion of the skin material 20 is bent downward and attached to the wall portion 14 erected along the outer peripheral edge of the core material 10. Thereby, manufacture of the upper panel 2 is completed.

<< Other Embodiments >>
About the said embodiment, it is good also as following structures.

  In the present embodiment, the protruding piece 27 is provided only on the protruding portion 26 of the second skin member 22, but the present invention is not limited to this configuration. For example, the protruding piece 27 may be provided only on the protruding portion 26 of the first skin member 21, or the protruding piece 27 may be provided on both the protruding portions 26 of the first skin member 21 and the second skin member 22.

  Moreover, in this embodiment, the engaging claw 28 was provided in the protrusion piece 27, and the engaging claw 28 was engaged with the opening hole 15, However, It is not limited to this form. For example, the tip of the protruding piece 27 inserted into the opening hole 15 may be bent and the protruding piece 27 may be bound to the back surface of the core material 10 by a stapler.

  Moreover, in this embodiment, although the 1st skin member 21 and the 2nd skin member 22 were shape | molded by slush molding, you may shape | mold by vacuum forming.

  As described above, the present invention provides a highly practical effect that the skin material can be fixed so as not to float from the core material with a relatively simple configuration. high.

2 Upper panel (vehicle interior)
DESCRIPTION OF SYMBOLS 10 Core material 15 Opening hole 20 Skin material 21 1st skin member 22 2nd skin member 25 Joint part 26 Projection part 27 Projection piece 28 Engagement claw 30 Urethane sheet (cushion material)
52 fitting recess 56 fitting projection 57 second planned fracture portion

Claims (3)

A core material (10), a skin material (20) that is integrally formed by joining edge portions of adjacent skin members (21, 22) and covering the core material (10), the core material (10), and the skin A vehicle interior comprising a cushion material (30) sandwiched between the material (20) and
The skin material (20)
A joint portion (25) provided at a joining position of the adjacent skin members (21, 22) and joined in a state where the surface sides of the skin members (21, 22) are in contact with each other;
A protrusion (26) formed by an edge of the skin member (21, 22) protruding toward the core (10) side of the joint (25);
Protruding pieces (27) provided on at least one of the projecting portions (26) of the adjacent skin members (21, 22) and projecting from the projecting portions (26) toward the core (10) side Have
The core material (10) has an opening hole (15) into which the protruding piece (27) can be inserted,
The vehicle interior product, wherein the protruding piece (27) is inserted into the opening hole (15) and fixed to the core material (10). In claim 1,
The vehicle interior product, wherein the protruding piece (27) is provided with an engaging claw (28) that engages with the opening hole (15). A core material (10), a skin material (20) that is integrally formed by joining the edge sides of adjacent skin members (21, 22) to cover the core material (10), the core material (10), and the core material (10) A method of manufacturing a vehicle interior product comprising a cushion material (30) sandwiched between a skin material (20),
A fitting concave portion (52) is formed on one surface of the edge portion of the adjacent skin member (21, 22), and the fitting convex portion (56) is fitted to the fitting concave portion (52) on the other surface. )
At least one of the adjacent skin members (21, 22) is to be broken (57) so that a protruding piece (27) is formed when a part of the edge of the skin member (22) is broken. )
A step of fitting and positioning the fitting concave portion (52) and the fitting convex portion (56) of the adjacent skin member (21, 22);
Joining in a state where the surface sides of the edge portions of the adjacent skin members (21, 22) are in contact with each other;
Forming the projecting piece (27) by breaking the breakable portion (57);
Sandwiching the cushion material (30) between the core material (10) and the skin material (20);
And a step of inserting and fixing the protruding piece (27) into an opening hole (15) formed in the core material (10).

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