JP4190850B2 - Automotive door trim board - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to an automobile door trim board which is a finish lining inside a door.
[0002]
[Prior art]
[Non-patent literature]
The construction method of the door trim board which gave the ornament skin shown in FIGS. 4-6 is generally known.
[0003]
Some door trim boards, which are interior materials for automobiles, have ornamental skins on the interior side. A method of simultaneously bonding the outer skin is adopted as a method of manufacturing the door trim board with the ornament outer skin. As shown in FIG. 4 to FIG. 6, this simultaneous covering method of the skin has corner portions 3 at the four corners at the depth from the upper edge a to the bottom b at the site where the ornamental skin of the resin door trim board 1 is applied. A long annular wood groove 2 is provided, and the end of the ornamental skin 4 is fitted into the wood groove 2 as shown in FIG.
[0004]
[Problems to be solved by the invention]
In the above-mentioned skin simultaneous bonding method, the inner circumference R of the corner portion 3 of the grained groove 2 is set to 25 mm or more. This is because wrinkles are generated or the resin of the base material of the door trim board 1 oozes out on the surface of the ornamental skin 4 due to the molding pressure concentrated on the corner portion 3 at 25 mm or less.
[0005]
The generation factors of the wrinkles are as follows. As shown in FIG. 7, the terminal B is about 7 mm longer than the grained vertex A of the ornamental skin 4, and as shown in FIG. 8, the terminal outer peripheral length dc of the ornamental skin 4 is larger than the circumferential length of the corner 3 of the grained groove 2. This is because there is a surplus.
[0006]
The object of the present invention is to simultaneously apply the skin even in a design with a grain having a small R corner or a design in which the ornamental skin is turned to the side (wind-flowing style) or in a design with no ornamental skin (floating island style). The goal is to provide a door trim board for automobiles that can be combined.
[0007]
[Means for Solving the Problems]
In order to achieve the above object, the present invention comprises, as described in claim 1, a resin material that has an ornamental skin on the interior side surface and corners at the four corners, and is fitted into a grained groove and simultaneously pasted. In the door trim board, a triangular surface portion is provided on an inner periphery of at least one corner portion of the four corner portions of the wood groove, and the molding pressure concentrated on the corner portion is dispersed by the triangular surface portion. To do.
[0008]
DETAILED DESCRIPTION OF THE INVENTION
Embodiments of the present invention will be described below with reference to the drawings. In FIG. 1, 1 is a door trim board made of a resin material, and 4 is an ornament skin. The ornament skin 4 is inserted into the wood groove 2 shown in FIG. 2 and FIG. The wood groove 2 is composed of an upper edge “a” to a bottom “b” and an upper edge “f” facing the bottom “e”. And the corner part 3 is provided in the four corners of the circular grain groove 2 which is long horizontally.
[0009]
Therefore, in the present invention, the triangular surface portion 5 is provided on the inner periphery of the corner portion 3 of at least one of the corner portions 3 at the four corners of the grained groove 2. Depending on the vehicle type, the triangular surface portion 5 may be provided at the corner portions 3 at three corners, i.
[0010]
As shown in FIG. 3, the end of the ornamental skin 4 is fitted into the wood-grooved groove 2 having the above-described form, and the skin is simultaneously pasted and combined.
[0011]
Since the present invention has the structure as described above, it is possible to disperse the molding pressure concentrated on the corner portion 3 at the triangular surface portion 5, whereby the wrinkles of the corner portion 3 and the resin of the base material of the door trim board 1 are ornamental. It does not ooze out to the surface of the epidermis 4.
[0012]
【The invention's effect】
As described above, according to the present invention, a simple structure in which a triangular surface portion is provided on the inner periphery of the corner portion of the grained groove, the design that winds the ornamental skin to the side (wind-flowing wind), and no turning of the skin (floating island wind) ) Of the design having a corner portion with a smaller radius of R, the simultaneous skinning method can be applied to reduce the manufacturing cost and increase the degree of freedom of the design. In addition, by dispersing the molding pressure concentrated on the corner portion by the triangular surface portion, the generation of wrinkles at the corner portion is prevented and the resin of the base material of the door trim board suppresses the seepage to the surface of the ornamental skin, thereby preventing defective products. There is an advantage that it is possible to provide a door trim board with improved quality without being put out.
[Brief description of the drawings]
FIG. 1 is a front view of a door trim board according to the present invention. FIG. 2 is an enlarged view of a corner portion of a grained groove in a portion of FIG. 1. FIG. 3 is a cross-sectional view taken along a line CC in FIG. FIG. 5 is a cross-sectional view taken along the line D-D in FIG. 4. FIG. 6 is a perspective view of a main part of a door trim board provided with a conventional grain groove. Cross-sectional view showing the cause of wrinkles at the corner [Fig. 8] Explanatory drawing of the cause of wrinkles at the corner of the conventional grained groove [Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Door trim board 2 Grain groove 3 Corner part 4 Ornament skin 5 Triangle part

Claims (1)

In a door trim board made of a resin material that has an ornamental skin at the corners of the vehicle interior side and has corners at the four corners, and is fitted into a grained groove and is simultaneously pasted and combined, at least one corner part among the corners at the four corners of the grained groove A door trim board for an automobile, characterized in that a triangular surface portion is provided on the inner periphery of the housing and the forming pressure concentrated on the corner portion is dispersed by the triangular surface portion.

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