JP2007045240A - Trim part for vehicle and its molding method - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a trim part for a vehicle efficiently forming a seal part and a spacer part with good attraction on appearance, and its molding method. <P>SOLUTION: A through hole 27 is arranged near a peripheral edge of a core material 21. Whereas, an outer peripheral edge of a surface material 23 is formed to a folded part 31 folded so as to be projected to a back surface side further from the core material 21 while covering the peripheral edge of the core material 21. In this state, the core material 21 and the surface material 23 are arranged in metal dies 65, 63 and melting resin flowing out from the through hole 27 of the core material 21 is dammed and solidified at the folded part 31 supported by an inner surface 73 of the metal die. Thereby, the seal part 97 is formed at the inside of the folded part 31. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to a vehicle trim component such as a door trim or an instrument panel, and a molding method thereof.

  2. Description of the Related Art Conventionally, a structure in which a seal portion is formed on an instrument panel and a duct member is brought into contact with and connected to the seal portion is known (see, for example, Patent Document 1).

In this patent document 1, it is provided with a core material having a through hole, a skin material provided at a distance from the core material, and a foamed resin layer provided between the core material and the skin material. A technique for forming a seal portion integrally with the foamed resin layer in the vicinity of the through hole of the core material by causing the molten resin forming the foamed resin layer to flow out of the through hole and foam and solidify the resin is disclosed.
Japanese Patent Laid-Open No. 10-109569

  However, since the sealing portion according to the conventional example is foamed and solidified while the molten resin flows out of the through hole, the molten resin spreads in the vicinity of the through hole, and it is difficult to form the sealing portion in a desired predetermined shape. Met. Therefore, when it is applied to a part of a trim part that can be seen from the outside, there is a risk that the appearance of the appearance will deteriorate.

  Accordingly, an object of the present invention is to provide a trim part for a vehicle and a molding method thereof, in which a seal part and a spacer part having a good appearance are efficiently formed integrally with a foamed resin layer.

  In order to achieve the above object, a vehicle trim component according to the present invention includes a core material having a through hole, a skin material provided on the surface side of the core material at a distance from the core material, and these core materials. And a foamed resin layer that is solidified by injecting a molten resin between the skin materials, and a part of the molten resin that forms the foamed resin layer flows from the through hole to the back side of the core material to be solidified. Thus, in the vehicle trim part in which the seal portion integrally formed with the foamed resin layer is provided on the back surface side of the core material, the through hole is disposed in the vicinity of the periphery of the core material, while the outer periphery of the skin material is Formed in a folded portion that is folded back so as to protrude to the back side of the core material while covering the periphery of the material, and in this state, the core material and the skin material are disposed in the mold, and from the through hole of the core material Damping out the molten resin at the folded part supported by the inner surface of the mold By reduction, characterized in that formed on the inside of the folded portion of the seal portion.

  In addition, the vehicle trim component according to the present invention includes a core material, a skin material provided on the surface side of the core material at a distance from the core material, and a molten resin is injected between the core material and the skin material. In the trim part for a vehicle provided with the solidified foamed resin layer, the outer peripheral edge of the skin material is disposed inward in the longitudinal direction from the outer peripheral edge of the core material, and the outer peripheral edge of the core material is disposed on the mold. The core material and skin material are placed in a mold in a state of being in contact with the inner surface, and the molten resin is allowed to flow from the outer peripheral edge of the skin material and the inner surface of the mold to the surface side of the skin material and solidify. By doing so, the spacer portion integrally formed with the foamed resin layer is formed to protrude to the surface side of the skin material.

  According to the vehicle trim component according to the present invention, the molten resin that has flowed out of the through hole of the core material is damped by the folded portion supported by the inner surface of the mold and solidified, whereby the seal portion is formed on the folded portion. It is formed inside.

  For this reason, the seal part integrated with the foamed resin layer can be efficiently formed inside the folded part of the skin material. And since the seal | sticker part is dammed up by a folding | returning part, it does not protrude from a folding | returning part, but a trim component with a favorable external appearance can be shape | molded.

  Further, according to the vehicle trim component according to the present invention, the molten resin is allowed to flow out from between the outer peripheral edge of the skin material and the inner surface of the mold to the surface side of the skin material and solidify, thereby forming the foamed resin layer. The integrally formed spacer portion projects from the surface side of the skin material.

  For this reason, the spacer part integrated with the foaming resin layer can be easily formed using the skin material and core material of the shape used normally. That is, it is not necessary to provide a through-hole or the like in the skin material, and the spacer material can be formed by simply setting the skin material in the mold with the longitudinal offset with respect to the core material and filling the molten resin. It can be formed easily.

  Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.

[First embodiment]
FIG. 1 is a perspective view showing a door trim according to a first embodiment of the present invention.

  This door trim 1 is a resin trim part attached to the vehicle interior side of a door panel (not shown).

  A handle portion 3 that is held by an occupant is provided at a substantially central portion of the door trim 1, and a lower end of the handle portion 3 is fixed to a front end of an armrest portion 5 that extends in the vehicle front-rear direction.

  FIG. 2 is a perspective view of the door trim of FIG. 1 as viewed from the rear surface side (the vehicle compartment outer side).

  As shown in FIG. 2, a seal portion 7 is formed in the vicinity of the peripheral edge on the back surface side of the door trim 1 so as to come into contact with and seal the door panel described later. Specifically, the seal portion 7 includes a front seal portion 9 formed at the front end of the door trim 1 along the vertical direction, and a lower seal portion 11 formed at the lower end of the door trim 1 along the vehicle front-rear direction. The door trim 1 is integrally formed in a substantially U shape in a side view from a rear seal portion 13 formed along the vertical direction at the rear end of the door trim 1.

  FIG. 3 is a sectional view of the door trim according to the first embodiment of the present invention, in which the door panel is indicated by a two-dot chain line. FIG. 4 is an enlarged cross-sectional view of part A of FIG.

  As shown in FIG. 3, the door panel 15 includes a door inner 17 disposed on the vehicle interior side and a door outer 19 assembled by hemming on the vehicle interior outside of the door inner 17. On the other hand, a door trim 1 is attached from the vehicle interior side.

  The door trim 1 includes a core member 21 arranged on the outermost side of the vehicle compartment (the back side of the door trim 1), and a skin member 23 arranged on the vehicle compartment side (front side) of the core member 21 with a space therebetween. A foamed resin layer 25 is provided between the core material 21 and the skin material 23, in which a molten resin is injected, foamed and solidified.

  As shown in FIG. 4, a through hole 27 is formed in the lower end near the periphery of the core material 21, and the outer peripheral edge on the lower end side of the skin material 23 is on the lower end side of the core material 21. It is formed in a folded portion 31 that is folded back so as to protrude from the core member 21 to the vehicle compartment outer side (back side) while covering the peripheral edge 29. Further, when molten resin is injected between the core material 21 and the skin material 23, the molten resin flows out from the through hole 27 to the outside of the vehicle interior of the core material 21, and is foamed and solidified. Are integrally formed with the foamed resin layer 25. And the seal | sticker part 7 is formed in the cross-sectional substantially rectangular shape which protruded to the vehicle compartment outer side in the state contact | abutted to the inner surface of the folding | returning part 31 of the skin material 23. FIG.

  In FIG. 4, since the seal portion 7 is pressed by the door inner, the side surface of the seal portion 7 on the vehicle outer side is arranged at the same position in the vehicle width direction as the tip of the folded portion 31 of the skin material 23. Yes. However, in a state before the door trim 1 is attached to the door panel, the side surface 33 on the vehicle outer side of the seal portion 7 protrudes outward from the front end 35 of the folded portion 31 to the vehicle compartment.

  Next, the structure of a molding die used for molding the door trim 1 according to the first embodiment will be briefly described.

  As shown in FIG. 5, the skin material molding die 37 includes a fixed die 39 arranged on the left side and a movable die 41 arranged on the right side. The movable die 41 is a fixed die 39. It is configured to be slidable in the left-right direction. In addition, an injection port 43 extending in the left-right direction is formed at the upper end of the movable mold 41, and a folded-back concave portion 45 that is bent and extended is formed at the lower end of the cavity.

  Further, as shown in FIG. 6, the core material molding die 47 has substantially the same structure as the skin material molding die 37. In this molding die 47, a movable die 49 arranged on the right side is configured to be slidable with respect to the left fixed die 51, and an injection port 53 extending in the left-right direction is formed in the movable die 49. Yes. Convex portions 57 and 59 for forming the insertion hole 55 and the through hole 27 of the core member 21 are formed at the upper and lower ends of the cavity.

  Furthermore, as shown in FIG. 7, the foaming mold 61 is configured such that a movable mold 65 disposed on the left side is slidable in the left-right direction with respect to a fixed mold 63 disposed on the right side. In addition, an injection port 67 is formed in the upper part of the movable mold 65, and the tip 69 of the injection port 67 is configured so that the insertion hole 55 in the upper part of the core material 21 is arranged correspondingly.

  Further, as shown in FIG. 8, a seal portion recess 71 for forming the seal portion 7 is formed at the lower end portion of the cavity in the foaming mold. And the folding | returning part 31 provided in the lower end part of the skin material 23 is comprised so that it may be supported by the inner surface 73 of a shaping die.

  A procedure for molding the door trim 1 according to the present embodiment using a molding die having these structures will be described.

  First, as shown in FIG. 5, the skin material 23 is molded using a skin material molding die 37 divided into left and right. The molten resin P is injected from an injection port 43 provided at the upper end of the movable mold 41 and filled in a cavity formed between the movable mold 41 and the fixed mold 39, and then the molten resin P is foamed. And the skin material 23 is shape | molded by making it solidify. Here, since the folded portion recess 45 is formed at the lower end portion of the cavity C, the folded portion 31 that is bent and extended is formed at the lower end portion of the skin material 23.

  Next, as shown in FIG. 6, the core material 21 is molded using the core material molding die 47. After injecting the molten resin P from the injection port 53 and filling the cavity C formed between the movable mold 41 and the fixed mold 39, the molten resin P is foamed and solidified to thereby form the core material 21. Mold. Here, in the upper part and the lower end part of the core member 21, an insertion hole and a through hole 27 penetrating in the thickness direction are formed in the upper part and the lower end part of the core member 21.

  After that, as shown in FIG. 7, the core material 21 and the skin material 23 are set inside the foam molding die 61.

  First, the skin material 23 is set in the cavity of the fixed mold 63, the core material 21 is set in the cavity of the movable mold 65, and both the molding dies 63 and 65 are clamped. At this time, the tip 69 of the injection port 67 of the movable mold 65 is disposed corresponding to the insertion hole 55 in the upper part of the core material 21, and a gap is generated between the skin material 23 and the core material 21.

  When the molten resin P is poured from the injection port 67, the molten resin P flows between the core material 21 and the skin material 23 through the insertion hole 55 in the upper part of the core material 21 from the tip 69 of the injection port 67. At the same time, as shown in FIG. 8, the molten resin P is filled into the seal portion recess 71 through the through hole 27 at the lower end of the core member 21. The molten resin P filled in the seal portion recess 71 is blocked by the folded portion 31 of the skin material 23 supported by the inner surface 73 of the molding die. Thereafter, the molten resin P is foamed and solidified, and the door trim 1 according to the present embodiment is formed. Finally, as shown in FIG. 9, the movable mold 65 is slid and the end portion 75 of the skin material 23 is trimmed by the cutter 76, thereby completing the door trim 1.

  Below, the effect by 1st Embodiment is demonstrated.

  The through hole 27 is arranged at the lower end (near the periphery) of the core material 21, while the outer periphery of the skin material 23 protrudes to the back side from the core material 21 while covering the periphery 29 of the lower end portion of the core material 21. In this state, the core material 21 and the skin material 23 are disposed in the mold, and the molten resin P that has flowed out of the through hole 27 of the core material 21 is supplied to the inner surface of the mold. The sealing portion 7 is formed inside the folded portion 31 by being damped and solidified by the folded portion 31 supported by 73.

  For this reason, the seal part 7 integrated with the foamed resin layer 25 can be efficiently formed inside the folded part 31 of the skin material 23. And since the seal | sticker part 7 is dammed by the folding | returning part 31, it does not protrude from the folding | returning part 31, and can form the door trim 1 (trim components) with a favorable external appearance.

  Moreover, the molding method of the door trim 1 (trim component) according to the present embodiment is a process of molding the core material 21 having the through hole 27 in the vicinity of the outer peripheral edge, and the skin material 23 having the folded portion 31 that is folded back on the outer peripheral edge. A step of setting the core material 21 and the skin material 23 in the mold in a state in which the folded portion 31 is supported by the inner surface 73 of the mold, with an interval in the thickness direction, and the core material The molten resin P is injected between the outer skin 21 and the skin material 23, and the injected molten resin P flows out of the through hole 27 of the core material 21. A step of forming a seal portion 7 by damming and solidifying the folded portion 31 that is supported.

  For this reason, since the seal | sticker part 7 is dammed by the folding | returning part 31, it does not protrude from the folding | returning part 31, and can form the door trim 1 (trim components) with a favorable external appearance.

[Second Embodiment]
Next, a second embodiment of the present invention will be described.

  FIG. 10 is a perspective view showing an instrument panel according to the second embodiment of the present invention.

  This instrument panel (trim component) 77 is disposed in the front part of the vehicle compartment, and a shelf 79 is provided in the front part. The shelf 79 is formed with a pair of air outlets 81 on the left and right, and a spacer 83 is formed on the front edge. In addition, although this spacer part 83 is good also as the seal | sticker part 97 continuously formed along the vehicle width direction at the front-end edge of the instrument panel 77 like this embodiment, the front-end edge of the instrument panel 77 is good. May be provided in a part (for example, several parts spaced apart in the vehicle width direction).

  FIG. 11 is an enlarged cross-sectional view taken along line CC in FIG.

  The instrument panel 77 according to the present embodiment includes a core material 87 arranged on the lower side, a skin material 89 provided on the upper side (surface side) of the core material 87 with a space from the core material 87, and these core materials. And a foamed resin layer 91 in which a molten resin P is injected and solidified between 87 and the skin material 89. The front end edge (outer peripheral edge) 93 of the skin material 89 is offset from the front end edge (outer peripheral edge) 95 of the core material 87 on the vehicle rear side (inward in the longitudinal direction), and obliquely upwards perpendicular to the core material 87. A seal portion 97 is provided so as to project. The seal portion 97 is a member having a substantially rectangular cross section formed integrally with the foamed resin layer 91 disposed between the core material 87 and the skin material 89. The upper end surface 99 of the seal portion 97 protrudes obliquely upward from the skin material 89, and the upper end surface 99 is in contact with the lower surface of the window panel 101.

  Next, an instrument panel molding procedure according to the second embodiment will be briefly described.

  FIG. 12 is an enlarged cross-sectional view showing the main part of the molding process of the instrument panel according to the second embodiment of the present invention.

  Also in the present embodiment, as in the first embodiment, the skin material 89 and the core material 87 are separately molded in advance.

  Next, as shown in FIG. 12, the skin material 89 and the core material 87 are set in the movable mold 103 and the fixed mold 105, respectively. At this time, the core material 87 and the skin material 89 are spaced apart in the left-right direction, and the lower end 109 of the skin material 89 is disposed above the lower end 111 of the core material 87. Further, the cavity in the mold near the lower end of the core material 87 is formed in a seal portion recess 107 having a rectangular cross section corresponding to a seal portion described later.

  Then, when molten resin is injected from an injection port (not shown) of the movable mold 103 and filled between the skin material 89 and the core material 97, it flows into the seal portion recess 107 from the lower end of the skin material 89. In this state, when the molten resin is foamed and solidified, a seal portion 97 having a rectangular cross section integrated with the foamed resin layer 91 between the skin material 89 and the core material 87 is formed.

  Below, the effect by 2nd Embodiment is demonstrated.

  The instrument panel (vehicle trim part) 77 according to the second embodiment of the present invention has the outer peripheral edge of the skin material 89 arranged inward in the longitudinal direction from the outer peripheral edge of the core material 87, and the outer peripheral edge of the core material 87. The core material 87 and the skin material 89 are arranged in the mold in a state where the core material 87 is abutted against the inner surface of the mold, and the molten resin is placed between the outer peripheral edge of the skin material 89 and the inner surface of the mold. The spacer portion 83 formed integrally with the foamed resin layer 25 is formed so as to protrude from the surface side of the skin material 89 by flowing out to the surface side and solidifying.

  For this reason, the spacer part 83 integrated with the foamed resin layer can be easily formed using a skin material and a core material having a shape that is normally used. That is, it is not necessary to provide a through-hole or the like in the skin material, the spacer material 89 is simply set in the mold with the skin material 89 being offset in the longitudinal direction with respect to the core material and filled with the molten resin. Can be easily formed.

  Since the spacer portion 83 can be applied as the seal portion 97 formed continuously in the width direction of the instrument panel (vehicle trim component) 77, the continuous seal portion 97 can be easily formed.

  Since the trim component is an instrument panel 77 and the seal portion 97 is formed at a contact portion with the window panel 101, the sealing performance at the front end portion of the instrument panel 77 can be kept high.

  In addition, when several spacer parts 83 are arranged at intervals along the vehicle width direction, it is possible to suppress fluttering at the front end of the instrument panel 77 during vehicle travel.

  The instrument panel (vehicle trim part) molding method according to the present embodiment is such that the skin material 89 and the core material 87 are spaced apart in the thickness direction, and the periphery of the skin material 89 is more than the periphery of the core material 87. A step of setting in the mold in a state in which the lower end (outer peripheral edge) 109 of the skin material 89 and the inner surface 113 of the mold are separated from each other, and the core material 87 and the skin material. The molten resin is poured between the inner surface 113 of the mold and the lower end (outer peripheral edge) 113 of the skin material 89, and the molten resin flows out from the surface side of the skin material 89 to be solidified. Forming a process.

  For this reason, there is no need to provide a through-hole or the like in the skin material 89, and the skin material 89 is simply set in the mold in a state of being offset in the longitudinal direction with respect to the core material 87 and filled with the molten resin. The spacer portion 83 and the seal portion 85 can be easily formed.

  In the present invention, the seal portions 7 and 97 and the spacer portion 83 can be formed of the same urethane resin as the foamed resin layers 25 and 91, but are integrated with a urethane resin of different hardness depending on the function to be provided. It can also be molded.

It is a perspective view which shows the door trim by 1st Embodiment of this invention. It is the perspective view which looked at the door trim of FIG. 1 from the back surface side. It is sectional drawing of the door trim by 1st Embodiment of this invention. It is sectional drawing to which the A section of FIG. 3 was expanded. It is sectional drawing which shows the formation process of the skin material by 1st Embodiment of this invention. It is sectional drawing which shows the formation process of the core material by 1st Embodiment of this invention. It is sectional drawing which shows the formation process of the door trim by 1st Embodiment of this invention. It is sectional drawing to which the B section of FIG. 7 was expanded. It is sectional drawing which shows the process of trimming the edge part of a skin material. It is a perspective view which shows the instrument panel by 2nd Embodiment of this invention. It is an expanded sectional view by the CC line of FIG. It is sectional drawing which shows the principal part of the shaping | molding process of the instrument panel by 2nd Embodiment of this invention.

Explanation of symbols

P ... Molten resin 1 ... Door trim (trim parts)
7, 97: Sealing portion 21, 87: Core material 23, 89 ... Skin material 25, 91 ... Foamed resin layer 27 ... Through hole 29 ... Periphery of core material 31 ... Folded portion 73, 113 ... Inner surface of mold 77 ... Instrument Panel (trim parts)
83 ... Spacer part 93, 95 ... Front edge (outer rim)
101 ... Window panel

Claims (6)

A core material having a through hole, a skin material provided on the surface side of the core material at a distance from the core material, and a foamed resin layer in which a molten resin is injected and solidified between the core material and the skin material A part of the molten resin forming the foamed resin layer is caused to flow out from the through hole to the back side of the core material and solidify to thereby seal the seal part integrally formed with the foamed resin layer. In the vehicle trim parts provided on the back side,
While the through-hole is disposed in the vicinity of the periphery of the core material, the outer periphery of the skin material is formed in a folded portion that is folded back so as to protrude to the back side of the core material while covering the periphery of the core material. The core material and the skin material are arranged in a mold, and the molten resin that has flowed out of the through hole of the core material is damped by a folded portion supported by the inner surface of the mold, and solidified. A trim part for a vehicle, characterized in that is formed inside the folded portion. A core material, a skin material provided on the surface side of the core material at a distance from the core material, and a foamed resin layer in which a molten resin is injected and solidified between the core material and the skin material In vehicle trim parts,
The outer peripheral edge of the skin material is disposed inward in the longitudinal direction from the outer peripheral edge of the core material, and the core material and the skin material are placed in the mold with the outer peripheral edge of the core material abutting against the inner surface of the mold. The spacer is integrally formed with the foamed resin layer by allowing the molten resin to flow out from between the outer peripheral edge of the skin material and the inner surface of the mold to the surface side of the skin material and solidify. A trim part for a vehicle, characterized in that it is formed to protrude from the front surface side of the vehicle.   The vehicle trim part according to claim 2, wherein the spacer part is a seal part formed continuously in a width direction of the trim part.   4. The vehicle trim part according to claim 3, wherein the trim part is an instrument panel, and the seal portion is formed at a contact portion with the window panel.   A step of molding a core material having a through hole in the vicinity of the outer peripheral edge, a step of molding a skin material having a folded portion where the outer peripheral edge is folded, and the core material and the skin material are spaced apart in the thickness direction. A step of setting the folded portion in the mold while being supported by the inner surface of the mold, and injecting molten resin between the core material and the skin material, and the injected molten resin from the through hole of the core material A method for molding a vehicle trim component, comprising: a step of flowing out; and a step of clogging and solidifying the flowed molten resin at the folded portion supported by the inner surface of the mold.   The skin material and the core material are spaced apart in the thickness direction, and the peripheral edge of the skin material is arranged inward in the longitudinal direction from the peripheral edge of the core material, and the gap between the outer peripheral edge of the skin material and the inner surface of the mold The process of setting in the mold in a separated state, and injecting molten resin between the core material and the skin material, the surface side of the skin material from between the inner surface of the mold and the outer peripheral edge of the skin material And a step of forming a seal portion by causing the molten resin to flow out and solidify.

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