JPH0414004Y2 - - Google Patents

Description

[Detailed explanation of the idea] (Industrial use) This invention relates to breathable shoes.

(Prior Art) Previously, in Japanese Patent Publication No. 38-21285, a breathable shoe sole was proposed in which an open-cell rubber foam was embedded in the sole with its sides exposed to the sides of the sole. has been done. This sole is designed to allow the air inside the shoe to be exhausted from the inside of the shoe to the side of the sole through the open-cell rubber foam by combining it with the ventilation material or ventilation structure inside the shoe. It is.

However, although shoes with this type of sole have good breathability, when worn in rainy weather or in puddles, water can easily enter the shoe from the side of the sole through the open-cell rubber foam. There was a drawback that it penetrated.

(Problems to be Solved by the Invention) This invention aims to eliminate these drawbacks and provide a breathable shoe that satisfies both breathability and waterproofness at the same time.

(Means for solving the problem) This invention will be explained below with reference to implementation drawings.
In this invention, an open-cell rubber foam 13 is placed in the recess 12 of the sole main body 11, which has a recess 12 that opens while leaving a hanging side 111 around the periphery, and a moisture-permeable waterproof sheet is applied to the side surfaces 131 of the sole main body 11. Through the ventilation window 1111 formed in the piece 14 and the hanging side,
The sole 1 is formed by filling the outer surface 110 of the main body of the shoe in communication with the outside surface 110 of the main body of the shoe.
1 is bonded at the hanging side 111 of the sole of the shoe, and the upper surface 132 of the open-cell rubber foam 13 is communicated with the inside of the shoe. That is.

In this invention, the sole main body 11 is made of a solid body of rubber or synthetic resin, or a closed-cell foam. A window 1111 is formed in the hanging side 111 of the sole main body 11, which communicates with the recess 12 of the sole main body and the side surface of the sole main body.

In this invention, open-cell rubber foam 1
3. Rubber latex foam, which may be composed of ordinary open-celled rubber foam, is an open-celled rubber foam with a compression set (according to JISK6301) of 20% or less and a microstructure. It is preferable to consist of:

Regarding the manufacturing method of open-celled rubber foam having such a microstructure, the applicant has disclosed, for example, Japanese Patent Application No. 1983-202844 (Japanese Patent Application No. 1983-57648).
As already proposed by.

If the compression set of the open-cell rubber foam 13 is higher than that, the impact resilience will decrease due to long-term wear, the cushioning properties will decrease, the comfort of the shoe will deteriorate, and the rubber foam will deteriorate. A reduction in pumping action due to cushioning properties tends to result in a reduction in breathability. If necessary, at least one side of the rubber foam 13 is coated with natural fibers such as cotton, recycled fibers such as rayon and caplar, and synthetic fibers such as acetate. If the base fabric 133 made of woven fabric, knitted fabric, non-woven fabric, etc. of synthetic fibers such as polyamide, polyvinyl alcohol, polyester, and polyacrylic fibers is laminated, the capillary action of the fibers making up the base fabric 133 will occur. This makes it possible to further improve moisture permeability, and also provides ventilation grooves 13 on the back surface of the rubber foam body 13 that communicate with the intervening portion of the waterproof sheet piece 14.
4, the air permeability can be further improved.

In this invention, the moisture-permeable waterproof sheet piece 14 interposed on the side surface of the rubber foam 13 is made of Gore-Tex (registered trademark, manufactured by L. Gore & Associates, Inc., USA) or Microtex (registered trademark, Nitto). It is composed of widely known moisture-permeable waterproof sheets such as Lepora (registered trademark, manufactured by Asahi Kasei Industries, Ltd.), Entrant (registered trademark, manufactured by Toray Industries, Inc.), etc.). These moisture-permeable tarpaulins have the contradictory properties of waterproofness and vapor permeability (moisture permeability), that is, they do not allow water from the outside to pass through, but they do allow water vapor emitted from the body to pass through, so they are suitable for sportswear, etc. It is commonly used. In this invention, a window 1111 consisting of a large number of ventilation holes at appropriate intervals on the hanging side 111 of the sole of the shoe,
1111..., and correspondingly, the waterproof sheet piece 14 may be interposed entirely on the side surface of the open-cell rubber foam 13, or the waterproof sheet piece 14 may be interposed entirely on the side surface of the open-cell rubber foam 13. When a window 1111 consisting of a relatively large notch is provided, this window 1111
The waterproof sheet piece 14 may be interposed only on the side surface of the open-cell rubber foam corresponding to the above.

When the window 1111 is configured with a relatively large cutout, filling the window 1111 with open-cell rubber foam pieces 3 prevents dust from entering the window 1111 and makes it transparent. This is convenient because impeding the moisture permeability of the damp waterproof sheet piece 14 is avoided.

The upper surface 132 of the rubber foam 13 is communicated with the inside of the shoe 0 via the breathable core sole 4 and midsole 5.

(Effect of the idea) This idea is structured as above, so
Even if the inside of the shoe becomes highly humid due to perspiration when worn for a long period of time or when worn in rain or in puddles, the shoes can be easily removed through the open-cell rubber foam 13, the moisture-permeable waterproof sheet piece 14, and the ventilation window 1111. The moisture inside the shoe is gradually discharged to the outside of the shoe, resulting in good breathability, and when the shoe is worn in rainy weather, water that enters through the ventilation window 1111 is blocked by the moisture-permeable waterproof sheet piece 14. Therefore, water does not enter the inside of the shoe, and waterproofness is good.

[Brief explanation of the drawing]

The drawings show an embodiment, and FIG. 1 is a sketch of the breathable shoe of this invention, FIG. 2 is a sectional view taken along the line A-A in FIG. 1, and FIG.
The figure is a sketch of the sole used in this invention. Explanation of symbols: 1...sole, 11...sole main body,
110...Outer surface, 111...Hanging side, 1
111... Ventilation window, 12... Recess, 13... Open cell rubber foam, 132... Upper surface, 133...
... Base fabric, 134 ... Ventilation groove, 14 ... Moisture-permeable waterproof sheet piece, 2 ... Folding cover, 21 ... Hanging part, 3
... Open-celled rubber foam piece, 4 ... Core bottom, 5
... Insole, 51 ... Ventilation hole, 6 ... Small feather, 0 ...
Inside the shoe.

Claims (1)

[Scope of utility model registration request] The recess 1 of the sole main body 11 is formed with a recess 12 that opens on the upper surface while leaving a hanging side 111 around the periphery.
2, the open-cell rubber foam 13 is connected at its side surface 131 to the outer surface 110 of the main body of the shoe sole via the moisture-permeable waterproof sheet piece 14 and the ventilation window 1111 formed on the hanging side of the shoe. The sole 1 is formed by filling the shoe sole 1 with a hanging part 21 of the shoe cover.
The breathable shoes are characterized in that they are adhered at the hanging side 111 of the main part of the sole, and the upper surface 132 of the open-cell rubber foam 13 is communicated with the inside of the shoe.