JP3029002B2 - Car door trim - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a door trim for an automobile manufactured by using a stamping molding method, and in particular, by using a gas assist method, suppresses occurrence of a gap between the door inner seal. The present invention relates to a door trim for an automobile, which has an improved appearance and an increased degree of freedom in setting a clip mounting seat.

[0002]

2. Description of the Related Art Normally, a door trim for an automobile as an interior material is mounted on a door inner panel. The upper edge of the door trim for an automobile is slidably contacted with an up-and-down door window glass to have a good sealing function. Door inner seal is installed.

FIG. 7 is an external view of a door trim 1 for an automobile. As shown in FIG. 8, a door inner seal 3 is attached to a waist flange portion 2 of the door trim 1. Usually, the waist flange portion 2 is stamped. As shown in FIGS. 9 and 10, it is integrally formed with the door trim 1 by a molding method.

At this time, as shown in FIG. 9, the door trim 1 is formed into a desired curved shape between the lower mold 4 for mold press molding and the upper mold 5 for mold press molding. Due to restrictions on the molding to be integrally formed, the straight up block 6 is installed on the lower mold 4.

Further, the end of the side edge of the waist flange portion 2 must be cut at the time of press molding. Burr removal work occurs,
Workability is significantly reduced.

In order to solve this, the side edge terminal of the waist flange portion 2 is set to be shifted inward by 5 mm or more from the end face of the straight-up block 6. In such a case, FIG.
As shown in (1), it has been pointed out that a drawback occurs in which a skid A is generated, and the appearance of the skid A is significantly reduced.

Further, the door trim 1 is fixed to a door inner panel (not shown) via a resin clip. Usually, as shown in FIG. 11, a clip mounting seat 7 is formed on the back side of the door trim 1. For example, even if the clip mounting seat 7 is set to the position shown in FIG. 12, the sliding operation of the slide core becomes difficult because of the undercut shape, and the clip mounting seat 7 can be actually set. However, there is also a problem that the setting position of the clip mounting seat 7 is greatly restricted.

The present invention has been made in view of such circumstances, and in a door trim for an automobile, which is formed into a desired shape by using a stamping molding method, a door trim and a door inner seal are provided by using a gas assist method. It is an object of the present invention to provide an automobile door trim which can eliminate gaps between the door trim and the interior parts, has a good appearance, and has a high degree of freedom in setting a clip mounting seat.

[0009]

Means for Solving the Problems In order to achieve the above-mentioned object, the present invention comprises a skin material adhered to a surface of a resin core material formed into a required shape by mold press molding,
In a car door trim in which a waist flange portion for attaching a door inner seal is integrally provided along the waist portion, a thickening portion for sealing a gap between the door inner seal and the door trim on a resin core material at front and rear ends of the waist portion. Is set, and a gas channel portion is opened in the thickening portion.

Further, the present invention is constituted by attaching a skin material to the surface of a resin core material formed into a required shape by mold press molding, and a clip mounting seat is integrally formed with the resin core material on the back surface of the product convex portion. In the formed automotive door trim,
A thickening portion is set on the inner surface of the product convex portion so that the setting surface of the clip mounting seat is substantially flush with the back surface of the resin core material,
It is characterized in that a gas channel section is opened in the thickening section.

[0011]

As is apparent from the above configuration, since the thickened portion is set in the resin core material at the front and rear ends of the waist portion, the thickened portion is located with respect to the conventional occurrence of the skin. In addition, no gap occurs between both ends of the door inner seal.

Further, since the gas channel portion is opened in the thickened portion, the sink does not occur on the surface of the product, and when the skin material is rolled into the thickened portion, the surface material is wavy. The terminal treatment of the skin material can be performed beautifully without the need.

[0013] Further, it has been conventionally impossible to set a clip mounting seat on the inner surface side of the product convex portion formed on the door trim. However, if a thickened portion is set on the inner surface of the product convex portion, the resin core material can be reduced. The back surface can be adjusted to almost the same plane and the slide core can be installed, so that the clip mounting seat can be set on the inner surface of the protruding part of the product. Does not occur.

[0014]

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a perspective view of a door trim for an automobile according to an embodiment of the present invention.

FIG. 1 is a perspective view showing a first embodiment of a door trim for an automobile according to the present invention, FIG. 2 is a sectional view showing a main part of the door trim, and FIG. 3 is a perspective view showing a shape near a waist portion of the door trim. FIGS. 4 and 5 are cross-sectional views for briefly explaining a molding process of the door trim, and FIG. 6 is a cross-sectional view of a main part of a second embodiment of the automobile door trim according to the present invention.

In the drawings, an automobile door trim 10 according to the present invention includes a resin core material 20 formed into a desired shape by a stamping molding method, and a skin material 30 integrally attached to the surface side of the resin core material 20. However, the door trim 10 may be constituted by the resin core material 20 alone according to specifications.

The material of the resin core material 20 is not particularly limited as long as it has desired rigidity and heat resistance, but polypropylene resin or ABS resin mixed with talc is preferable.

Further, the waist portion 11 of the door trim 10
Is formed to have a shape slightly bulging toward the indoor side, and a waist flange portion 12 for attaching the door inner seal 40 is integrally formed so as to extend downward from the waist portion 11 (FIG. 3).

The feature of the present invention is that, in the door trim 10 in which the waist flange portion 12 is integrally formed by the stamping molding method of the resin core material 20 as described above, the door inner seal 4 is secured while ensuring good workability.
The point is that the occurrence of the gap between 0 and the door trim 10 is eliminated, and the appearance is improved.

That is, the thickening portions 21 are respectively set in the resin core materials 20 located at both ends of the waist portion 11, and the gas channel portions 22 are opened in the thickening portions 21.

Therefore, when attaching the door inner seal 40 to the waist flange portion 12 of the door trim 10,
Conventional thickening is eliminated by the thickened portion 21,
In addition, the thickened portion 21 has a gas channel portion 22 therein.
Is established, since molding defects such as sink marks do not occur, the appearance is remarkably preferable.

Next, FIGS. 4 and 5 briefly explain the molding process of the above-described door trim 10 for an automobile.
As shown in FIG. 4, a molding die is composed of a lower mold 50 for mold press molding, an upper mold 60 for mold press molding, and a straight-up block 70 for molding the waist flange portion 12. The mold surface of the lower mold 50 for mold press molding is notched in order to provide the thickened portion 21 in the mold 20, and a gas supply pipe (not shown) provided in the lower mold 50 is used to insert the inside of the thickened portion 21. If the gas is injected at the time of injection of the molten resin, the gas channel portion 22 is formed, and no burr occurs at the end of the waist flange portion 12 between the straight-up block 70 and the lower mold 50 for mold press molding. The side edges can be cut and removed well.

After the molding, as shown in FIG.
Rises, and the door trim 10 formed into a desired shape may be removed from the mold.

As described above, in the embodiment described above, the thickening portions 21 are set at both ends of the waist portion 11 of the resin core material 20,
In addition, with the simple configuration in which the gas channel portion 22 is opened in the thickened portion 21, the gap between the door inner seal 40 and the conventional one can be surely eliminated.
There is an advantage that it is possible to provide the automobile door trim 10 which is excellent in appearance design and does not cause sink marks on the product surface.

Since both ends of the waist flange portion 12 are positioned inside the side surface of the straight-up block 70, no burrs are generated, so that a deburring operation is unnecessary.

FIG. 6 shows a second embodiment of the automotive door trim 10 according to the present invention, in which a clip mounting seat 14 is set on the inner surface side of the product projection 13.

Further, a thickened portion 23 is provided at the base of the clip mounting seat 14, so that the mounting surface of the clip mounting seat 14 is substantially flush with the back surface of the resin core 20. Thus, the slide operation of the slide core can be performed smoothly, and there is no hindrance to the installation of the clip mounting seat 14.

Further, since the gas channel portion 24 is provided in the thickened portion 23, sink marks and the like do not occur on the surface of the product convex portion 13.

Therefore, in the related art, it is difficult to set the clip mounting seat on the inner surface of the product convex portion 13 having the undercut shape due to the installation of the slide core, but the gas assist method is used as in the present invention. Thus, there is an advantage that the clip mounting seat 14 can be set at an arbitrary position of the door trim 10, and the degree of freedom in setting the clip mounting seat 14 can be greatly improved.

[0030]

As described above, the automobile door trim according to the present invention has the following special effects.

(1) By providing a thickened portion in the resin core material at both ends of the waist portion and opening a gas channel portion in the thickened portion, the gap between the door inner seal and the conventionally generated gap is eliminated. It is possible to significantly improve the appearance and to prevent defects such as surface sink marks from occurring.

(2) When a clip mounting seat is set on the inner surface of the product convex portion, a thickened portion is set on the inner surface of the product convex portion, and a gas channel portion is opened in the thickened portion. Since the slide operation can be performed smoothly and the sink does not occur on the product surface, the setting position of the clip mounting seat can be arbitrarily selected, and the degree of freedom in forming can be greatly improved.

[Brief description of the drawings]

FIG. 1 is a perspective view showing a first embodiment of an automobile door trim according to the present invention.

FIG. 2 is a sectional view taken along line II-II in FIG.

FIG. 3 is a perspective view showing a waist terminal of the automobile door trim shown in FIG. 1;

FIG. 4 is a sectional view showing a mold press molding step of the automobile door trim shown in FIG. 1;

FIG. 5 is a sectional view showing a state after mold press molding of the automobile door trim shown in FIG. 1;

FIG. 6 is a sectional view taken along line VI-VI in FIG. 1;

FIG. 7 is a perspective view showing a conventional automobile door trim.

FIG. 8 is an explanatory view showing the vicinity of a waist terminal in a conventional car door trim.

FIG. 9 is a cross-sectional view showing a mold used for molding a conventional automobile door trim.

FIG. 10 is a sectional view showing a state after molding of a conventional automobile door trim.

FIG. 11 is a sectional view taken along line XI-XI in FIG. 7;

FIG. 12 is a cross-sectional view showing a defect in a conventional automobile door trim.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 10 Automobile door trim 20 Resin core material 21, 23 Thickening part 22, 24 Gas channel part 30 Skin material 40 Door inner seal 11 Waist part 12 Waist flange part 50 Lower mold for mold press molding 60 Upper mold for mold press molding 70 Straight Raised block

Claims (2)

(57) [Claims] 1. A waist flange portion (12) formed by attaching a skin material (30) to the surface of a resin core material (20) formed into a required shape by mold press molding, and attaching a door inner seal (40). ) Is integrally provided along the waist portion (11), and a door inner seal (40) and a door trim (10) are provided on the resin core material (20) at the front and rear ends of the waist portion (11). A thickened portion (21) for sealing the gap of the gas channel portion (22) is set in the thickened portion (21).
Door trim for automobiles, characterized by the fact that a door trim has been established. 2. A resin core material (20) formed into a required shape by mold press molding , a skin material (30) is adhered to a surface of the resin core material (20), and a clip mounting seat (14) ) Is formed integrally with the resin core material (20), wherein the setting surface of the clip mounting seat (14) is a resin core material (2).
0) so that the product convex portion (1) is substantially flush with the back surface of (1).
3) A thickened portion (23) is set on the inner surface, and the thickened portion (2) is set.
3) An automobile door trim characterized in that a gas channel section (24) is opened in the interior.