JPH0242548Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Industrial Field of Application] The present invention relates to a waterproof sheet, and particularly to an outdoor waterproof sheet, typified by motorcycles and the like.

[Prior Art] Seats used outdoors, such as on motorcycles, must be waterproofed in consideration of riding in the rain.

For this reason, the skin of the seat is made of a single layer,
In the case of a sewn sheet or the like having seams, a waterproof film or the like is placed at the seams to prevent water from entering the cushion material through the seams.

[Problems to be solved by the invention] However, in the case of the prior art, little consideration was given to the infiltration of water from the end-treated portion that joins the bottom plate and the skin material. For this reason, in the case of outdoor sheets, water sometimes entered through the end-treated portions, causing deterioration of the cushioning material.

The present invention was devised in view of these points, and its technical objective is to provide an outdoor waterproof sheet with higher waterproofing effect.

[Means for Solving the Problems] The present invention was made to solve the above problems, and consists of placing a cushion material on the bottom plate, covering it with a skin material, and applying the cushioning material on the back side of the bottom plate. In a sheet in which the end portion of the skin material is joined to the bottom plate, a moisture absorbing material is disposed between the lower part of the bottom plate on the side of the skin material from the end treated portion and the skin material. This moisture absorbing material uses either a water-absorbing polymer porous material or a water-sealing porous material.

Further, when a water-absorbing porous polymer material is used as the moisture absorbing material, pores are formed in the skin material located at the lower part of the bottom plate, that is, in the portion of the skin material that is in contact with the water-absorbing porous material.

[Function] As mentioned above, in the present invention, a moisture absorbing material is provided between the bottom plate and the skin material in the end treatment area, so even if moisture infiltrates from the end treatment area, this moisture absorbing material will prevent moisture from entering. , moisture is absorbed and does not penetrate into the cushion material. In particular, when a water-sealing porous material is used as the moisture absorbing material, it gels and prevents further water from entering.

In addition, when a water-absorbing porous polymer material is used as the moisture-absorbing material, when the moisture in the moisture-absorbing material becomes saturated,
It can be discharged through holes formed in the skin material.

[Example] Hereinafter, an example of the present invention will be described with reference to the drawings. However, as a matter of course, the components and other members and arrangements described or illustrated in the following description are merely illustrative examples and are not intended to limit the present invention.

FIG. 1 shows a first embodiment of the present invention, FIG. 1A is a cross-sectional view of the sheet, and FIG. 1B is an internal structure diagram showing an example of the moisture absorbing material.

In FIG. 1, the seat S in this example has a structure in which a cushion material 2 is placed on a bottom plate 1, and this cushion material 2 is covered with a skin material 3.

Although the bottom plate 1 in this example has a shape in which the periphery protrudes downward, the material of the bottom plate, the downward shape, and other forms are not limited. Further, although polyurethane foam is used as the cushioning material 2 in this example, the material of the cushioning material 2 does not matter as long as it has cushioning properties.
Furthermore, for the skin material 3, a single piece of vinyl chloride leather is used in this example, but any material can be used as long as it has a waterproof effect.

The terminal processing portion 5 in this example is the bottom plate 1.
The protruding portion 1a formed around the surface material 3 and the end portion 3a of the skin material 3 are joined with staples 4 and processed. And the bottom plate 1a located on the outer peripheral side of the staple 4 of the terminal processing portion 5
A moisture absorbing material 6 is disposed in series over the entire circumference between the lower part of the skin material 3 and the skin material 3.

The moisture absorbing material 6 used in this example is a so-called water-sealed porous material, and as shown in FIG. 1B, the interstitial material 6a contained in the pores 6b has a hydrophilic three-dimensional network structure. It has a space polymer made of a vinyl copolymer with For example, AquoS, aquoS-S,
The material of the porous body represented by AquoS-N) [trade name, manufactured by Spacey Chemical Co., Ltd.] has 6b pores.
When water enters and comes into contact with the interstitial material, the interstitial material rapidly absorbs water, expands, and becomes gel-like. and block subsequent passage of water. This gel state is
It has great strength and can prevent moisture from passing through even under fairly high pressure.
The absorbed moisture does not migrate into the cushion 2 due to the pressure bond between the bottom plate 1 and the skin material 3.

The resins that make up the porous body include EVA,
PVC, soft materials such as synthetic rubber, PP, PE,
Various materials such as hard materials such as PVC and PMMA can be used.

FIG. 2 is a partial sectional view of a main part of a seat showing a second embodiment of the present invention. In this example, the same members and the like as those in the above embodiment are given the same reference numerals, and their explanations will be omitted.

In this example, a so-called water-absorbing polymer porous body 21 is used as the moisture absorber, and holes 22 are formed in the skin material 3 located at the lower part of the bottom plate 1.

The moisture absorber 21 used in this example absorbs moisture and can withstand repeated use. As an example of the moisture absorber, a polymeric water absorbing porous body is used. Further, as a suitable water-absorbing porous polymer material, for example, Hydaq (trade name, manufactured by Spacey Chemical Co., Ltd.) can be used.

According to this example, the moisture absorbed by the moisture absorber 21 can be discharged from the holes 22, and the absorbed moisture is transferred into the cushion 2 by the pressure bonding between the bottom plate 1 and the skin material 3. There's nothing to do.

In each of the embodiments described above, the moisture absorbing material is disposed in a series over the entire circumference between the bottom plate and the skin material of the end-treated portion, but the moisture absorbing material does not need to be disposed in a series.

[Effects of the invention] Since the present invention is constructed as described above, it is possible to provide a waterproof sheet that can prevent water from entering the cushioning material by using the moisture absorbing material and prevent water from entering the cushioning material. Can be done.

[Brief explanation of the drawing]

Fig. 1 shows the first embodiment of the present invention, Fig. 1A is a cross-sectional view of the sheet, Fig. 1B is an internal structure diagram showing an example of the moisture absorbing material, and Fig. 2 is a diagram of the present invention. FIG. 7 is a partial cross-sectional view of a main part of a sheet showing a second embodiment. 1...Bottom plate, 2...Cushion material,
3...Skin material, 3a...Terminal part of the skin material, 4...
Staple, 5... Terminal processing part, 6, 21...
Moisture absorber (water-sealed porous body, water-absorbing polymer porous body), 22...hole, S...sheet.

Claims (1)

[Claims for Utility Model Registration] 1. In a sheet in which a cushioning material is placed on a bottom plate and covered with a skin material, the skin material is end-treated at least on the back side of the bottom plate, and further from the end-treated portion. An outdoor waterproof sheet, characterized in that a moisture absorbing material is disposed between the skin material and the bottom plate on the skin material side. 2. The outdoor waterproof sheet according to claim 1, wherein the moisture absorbing material is a water-sealing porous material. 3. Utility model registration claim 1, characterized in that the moisture absorbing material is a porous water absorbing polymer, and pores are formed in the skin material in contact with the moisture absorbing material. outdoor tarpaulin.