JPH0213513Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to a mounting structure for interior materials mainly applied to automobiles and the like.

[Conventional technology]

Conventional felt is made by binding natural fibers, synthetic fibers, or their recycled fibers with synthetic resin, and when used as an interior material for an automobile, for example, as shown in Figure 3, felt 1 and bracket 2 are bonded together.
The felt 1 is attached to the inner panel 3 by attaching the clip 4 attached to the inner panel 3 to the bracket 2. In this case, the edge of the felt 1 is slightly bent toward the inner panel 3 and the gap 5 created between the inner panel 3 and the felt 1 is closed by the bracket 2 and the clip 4.

[Problem that the invention attempts to solve]

However, in the case of the above-mentioned conventional felt, the hygroscopic expansion properties of the front and back surfaces are different due to slight variations in the density and amount of binder between the front and back surfaces, so after use, the front side expands due to moisture absorption from the outside world. If the hygroscopicity is high, the felt will warp toward the back side, and if the hygroscopic expansion property of the back side is high, the felt will warp toward the front side. In the case shown in Fig. 3, if the hygroscopic expansion on the front side is large, there is no problem since the felt 1 will warp to the back side and it will adhere more closely to the inner panel 3. However, if the hygroscopic expansion on the back side is large, the felt 1 will curve as shown in the dotted line. As shown in FIG. 3, the adhesion to the inner panel 3 is lost as it warps toward the front side. However, it is very difficult to artificially adjust the adhesion between the front side and the back side using a single piece of felt 1.

[Means for solving problems]

The present invention, as a means to solve the above-mentioned conventional problems, is an interior material in which a felt made by polymerizing two layers with different hygroscopic expansion properties is attached to a base material with the layer with lower hygroscopic expansion properties facing the base material. It provides a mounting structure.

In order to differentiate the hygroscopic expansion properties between the two layers of the felt, fibers with different hygroscopic expansion properties are used, such as natural fibers with high hygroscopic expansion properties such as hemp fibers and cotton fibers, and polyester fibers, polyamide fibers, acrylic fibers, etc. A combination of synthetic fibers with low hygroscopic expansion, or a combination of natural fibers such as juute fibers (hemp fibers) with high hygroscopic expansion and kapoku fibers (cotton fibers) with low hygroscopic expansion.
Alternatively, it is possible to take into account the combination of juute fiber and kapoku fiber-synthetic fiber (coarse wool) mixture, to adjust the type and amount of binder added, to adjust the compressibility of felt, etc. Applicable.

[Effect]

In the present invention, when the felt absorbs moisture, it inevitably warps on the side of the layer that has a lower hygroscopic expansion property and adheres more closely to the base material.

[Effect of idea]

Therefore, since the felt of the present invention has a small hygroscopically expandable layer on the side of the substrate to which the felt is attached, its adhesion to the substrate does not deteriorate even if the felt absorbs moisture.

〔Example〕

To explain the present invention with reference to an embodiment shown in FIGS. 1 and 2, the felt 11 is composed of a layer 11A with a large hygroscopic expansion property and a layer 11B with a small hygroscopic expansion property, and the layer 11A is, for example, The layer 11B is made of felt made by bonding jute fiber, which is a type of linen fiber, with phenolic resin.For example, layer 11B is made of a mixed fiber of 7 parts by weight of Kapotsu fiber, which is a type of cotton fiber, and 3 parts by weight of coarse wool, which is a synthetic fiber, and is made of phenolic resin. Consists of felt bound together. As shown in FIG. 2, the felt 11 is fitted with a bracket 12 at a predetermined location.
The felt 11 is attached to the inner panel 13 by fitting the clips 14 of the inner panel 13 as a base material into the bracket 12. At this time, the layer 11A is placed on the outside of the felt 11, and the layer 11B is placed on the inside. The edges of the felt 11 are bent slightly toward the inner panel 13 and attached to the inner panel 13 by the bracket 12 and clips 14.
The gap 15 created between the layer 1 and the felt 11 is closed, but if the felt 11 absorbs moisture in this state, the layer 1
Since the layer 1A expands more than the layer 11B, the felt 11 will not necessarily warp in the direction of the arrow in FIG. 2 and will come into closer contact with the inner panel 13.

[Brief explanation of drawings]

Figures 1 and 2 show an embodiment of the present invention, with Figure 1 being a side sectional view, Figure 2 being a sectional view of the state in which it is adhered to the inner panel, and Figure 3 being a conventional example of the inner panel. It is a sectional view of a state where it is attached to a panel. In the figure, 11...Felt, 11A...Large hygroscopic expansion layer, 11B...Low hygroscopic expansion layer.

Claims (1)

[Scope of utility model registration request] A mounting structure for an interior material, characterized in that a felt obtained by polymerizing two layers with different hygroscopic expansion properties is attached to a base material with the layer having a lower hygroscopic expansion property facing the base material side.