JPS624009Y2 - - Google Patents

Description

[Detailed Description of the Invention] Field of the Invention This invention relates to an improvement of a garnish-less type automobile door trim.

Conventional technology and its problems Normally, garnish-less type door trims omit the waist core material (commonly known as garnish) made of a metal plate, etc. that constitutes the upper part of the core material of the door trim, and remove the upper edge of the hardboard core material. By extending a flexible skin laminated and bonded to the surface of this, and using this flexibility, the extended portion is attached along the curved surface of the inner panel of the door (vehicle body side panel). This design maintains the same appearance as the conventional rigid door trim, while also making the door trim lighter and reducing the number of parts.

In this garnish-less type door trim structure, for example, as shown in FIG. 1, a pad material 3 and a skin material 4 are laminated and bonded to the surface of a core material 2 such as hardboard that constitutes the door trim 1 by welding or the like. At the same time, the pad material 3 is lowered from the upper edge of the core material 2.
A hard board 6 is attached to the back surface of the extended end of the extended portion 5.

In addition, in order to attach the door trim 1 configured in this way to the inner panel 7 on the door side, attach the mounting clips 8 to the appropriate positions of the core material 2, and also attach the clips to the inner panel 7 at the clip attachment positions. A corresponding mounting hole 8' is formed, and a mounting bracket 10 having a U-shaped cross section and integrating a weather strip 9 is attached to the folded upper end portion of the inner panel 7, that is, the waist portion 7a. The door trim 1 is attached to the U-shaped part of this mounting bracket 10.
By fitting and fixing the hard board 6 of the inner panel 7, and fitting the mounting clip 8 into the mounting hole 8' while pulling the extension part 5, the extension part 5 is attached to the waist part of the inner panel 7. It is extended along the curved surface and the door trim 1 is attached to the side of the inner panel 7.

By the way, the waistline of the door (the shape of the ridgeline at the upper end of the inner panel 7 in the direction perpendicular to the plane of the paper shown in FIG. 1) is not necessarily configured in a straight line. The protruding portion is formed in a shape that bulges out on the side. For this purpose, the door trim as described above is attached to the curved waist portion 7 of the inner panel 7.
If it is attached to point a, the degree of expansion of the extension portion 5 will be partially imbalanced, causing wrinkles in the skin material 4.

Therefore, in order to eliminate this cause, the extension part is trimmed into a curved expanded shape to make the degree of expansion as uniform as possible, but generally the skin material is made of vinyl chloride or the like. Because there are
It expands and contracts significantly due to differences in temperature and temperature, and this expansion and contraction results in dimensional errors, which tends to cause wrinkles in summer and winter, especially near the protruding part of the lock knob, and also has the disadvantage that the area near the edges tends to roll up. It had been pointed out.

In contrast, instead of the laminated molded product of the pad material and skin material as the skin material constituting the extension part of the door trim, a foamed resin sheet with excellent extensibility is used as the skin material for the waist part of the inner panel. Attempts have been made to solve the above-mentioned problems by using

However, in this case, when joining the foamed resin sheet and the door trim body (the trim part that is attached to a part other than the waist part of the inner panel), it is difficult to perform welding, and the joining is done using mechanical fasteners or adhesives, which requires a lot of man-hours. In addition, the waist area in particular is easily touched by people and is prone to stains and scratches, so if this area becomes soiled, the door trim itself will need to be replaced, which is uneconomical. disadvantages were pointed out.

Purpose of the invention This invention was made in view of the above background, and the purpose of the invention is to provide a garnish-less type automobile door trim that is particularly compatible with the curved shape of the waist portion of the inner panel. To provide a door trim for an automobile that does not cause warps or sagging on the surface, is aesthetically pleasing, and has improved usability by providing compatibility only with the trim material at the waist.

Structure and Effects of the Invention In order to achieve the above object, the present invention includes a plate-shaped core material that is attached to the part of the door inner panel excluding the waist part, and a plate-shaped core material that is laminated on the side of this core material and bonded by welding. A door trim for an automobile comprising a door trim body including a pad material and a skin material, and a waist trim member attached to the waist part of the door inner panel, wherein the waist trim member is attached to the waist part of the door inner panel. A foamed resin sheet is constructed separately from the foamed resin sheet, and a skin layer is formed on the surface of the sheet, and the continuous portion from the surface is foamed. and a sheet material having a higher tensile load than the foamed resin sheet attached to the inner panel, and the waist trim member is detachably attached to the waist portion of the inner panel, The end portion is clamped and held between the inner panel and the door trim body.

That is, in the case of the automobile door trim according to the present invention, as described above, as a trim member attached to the waist part of the inner panel, a skin layer is formed on the surface part, and a continuous part from the surface is foamed. This is a foamed resin sheet made of foamed resin, and a sheet material with a higher tensile load than the foamed resin sheet attached to both sides of the back side of the foamed resin sheet. Compared to the inner panel, it can fit closely to the shape of the inner panel, and there are no wrinkles or sagging around the periphery of the inner panel, especially on the protruding part of the inner panel such as the protruding part of the knob.
It can be adhered to in a smooth state, and furthermore, since an inward urging force acts on both edges, it has the advantage of not curling up.

Furthermore, in this invention, the waist trim member is constructed separately from the door trim body, so even if the waist trim member, which is easily touched by human hands, becomes dirty or damaged, the whole part can be replaced. It is very economical because only the waist trim member needs to be replaced.

DESCRIPTION OF EMBODIMENTS An embodiment of this invention will be described in detail below with reference to FIG. 2 and subsequent drawings.

However, the same parts as before are given the same symbols,
Only different parts will be explained using new symbols.

Figures 2a and 2b show a garnish-less type door trim 20 according to this invention and its installation state.This item has a pad material 3 attached to the surface of the core material 2 by welding or the like, as in the conventional case. , a door trim body formed by laminating and bonding skin materials 4 and wrapping the ends of the skin materials 4 around the back surface of the core material, and a waist trim member 21 attached to the waist portion 7a of the inner panel 7. .

The waist part trim member 21 is the waist part 7
It is attached to a by winding with double-sided tapes 25, 25 interposed therebetween.

The waist trim member 21 includes a foamed resin sheet 22, such as a foamed polyvinyl chloride sheet, which has a skin layer 22a formed on its surface and a foamed layer 22b integrally formed in a continuous portion from the surface. A hard board 6 is attached to the back surface of the upper edge of the foamed resin sheet, and furthermore, as shown in FIG. A sheet material 23 with a high tensile load is attached in a bag shape by welding.

Then, the foamed resin sheet 22 is heated at room temperature (22
℃), the tensile strength at 10% elongation is 1.2
~0.3Kg/10mm width, it is a material with low tensile load and good elongation in all directions compared to conventional pad material and skin material laminated together.

FIG. 4 shows the relationship between the tensile stress and temperature, and compared to the characteristics of the foamed resin sheet 22 according to the present invention, the characteristics of the conventional sheet do not change drastically due to temperature changes. It is shown.

Therefore, from the state shown in FIG.
When the door trim body 20 according to the present invention is attached as shown in FIG. The waist portion 7a of the inner panel 7 is held tightly in a shape that matches the curved surface of the waist portion 7a, and is worn in an expanded state.

Furthermore, even in the portions that bulge out from the waist portion 7a, such as the lock knob protruding portion 7b shown in FIG.
No wrinkles or sagging were observed around the waist portion 7a.

Furthermore, when the waist trim member 21 is stretched and installed along a curved surface, a force is applied to both side edges of the waist trim member 21 to cause it to peel off from the inner panel 7, but there is no welding on the inside of the waist trim member 21. In order to counteract the peeling force of the sheet material 23 that is pulled from the inside, the waist trim member is shaped so as to match the shape of the side edges of the inner panel 7 without turning up the side edges. 21 is in close contact.

[Brief explanation of the drawing]

Fig. 1 is a vertical sectional view showing a conventional garnish-less type door trim and its installation state, Fig. 2 a and b are longitudinal sectional views showing the door trim according to this invention and its installation state, and Fig. 3 is the same. FIG. 4 is a partial plan view showing the rear side edge of the waist trim member of the door trim, and FIG. 4 is a graph showing the relationship between tensile stress and temperature of a laminated product of the foamed resin sheet according to the present invention, conventional pad material, and skin material. , FIG. 5 is a partial perspective view showing a protruding portion of the lock knob on the inner panel. 2... core material, 3... padded material, 4... skin material,
7...Inner panel, 7a...Waist part, 2
0...Door trim, 21...Waist trim member, 22...Foamed resin sheet, 23...Sheet material, 25...Double-sided tape.

Claims (1)

[Scope of Claim for Utility Model Registration] (1) A plate-shaped core material that is attached to the part of the door inner panel excluding the waist part, and a pad material and skin that are laminated on the side of this core material and adhered by welding. a door trim body comprising a material;
In a door trim for an automobile comprising a waist trim member attached to a waist part of a door inner panel, the waist trim member is configured separately from the trim body and has a skin on its surface. A foamed resin sheet that forms a layer and is formed by foaming continuous parts from the surface, and a foamed resin sheet that has a higher tensile load than the above foamed resin sheet that is attached to both sides of the back side of the foamed resin sheet by welding. The waist trim member is detachably attached to the waist part of the inner panel, while the lower end of the waist trim member is clamped between the inner panel and the door trim body. An automobile door trim characterized by being retained. (2) The automobile door trim according to claim 1 of the utility model registration claim, wherein the foamed resin sheet has a tensile strength of 1.2 to 0.3 kg/10 mm width when stretched by 10% at room temperature. .