JPS5940802Y2 - Sole material for footwear - Google Patents

Description

[Detailed explanation of the invention] This invention relates to improving the sole material used in footwear such as athletic shoes and sandals used for running competitions and jogging. The present invention relates to a sole material for footwear characterized in that a tape-shaped wedge portion is formed with a constant width around the upper surface of the material from the heel portion to the non-stepping portion and is thicker near the heel portion.

Footwear, which is indispensable in daily life, has been improved according to its purpose, such as being comfortable to wear, durable and lightweight, and having high commercial value in terms of appearance.

In particular, improvements are being made from the viewpoints of durability, lightness, and comfort.

Athletic shoes used for running competitions, jogging, etc.
As shown in Fig. 1, a wedge portion 3 is generally sandwiched between the outsole 1 and the midsole 2, which is thickest at the heel side and thinner toward the unstepped side from the heel side to the unstepped side. ing.

As shown in FIG. 2, this wedge portion 3 is attached to the entire surface from the vicinity of the heel to the side of the non-stepping portion.

Furthermore, this wedge part, especially around the heel area, is subject to a load of 3 to 6 times the wearer's weight, so an air-tight layer that seals the air is provided on the heel side of the midsole, and the upper part of the wedge area Alternatively, through holes are provided in the lower surface in the lateral direction to alleviate the repulsive force of the ground, etc. against landing pressure, and at the same time, improvements are being made to reduce weight.

This idea was discovered as a result of studies to further improve the comfort and weight reduction mentioned above, and it is possible to create a sole material for footwear that is not only comfortable and lightweight, but also inexpensive. This is what we provide.

This invention will be explained in detail below with reference to FIGS. 3 to 7 showing one embodiment thereof.

That is, this invention is characterized in that, as shown in FIG. 3, a wedge portion 13b is formed in the shape of a tape with a constant width around the upper surface of the outsole 11 from the heel portion to the non-stepping portion.

The wedge portion 13b is formed so that it is thickest near the heel and becomes thinner from the heel to the non-stepping portion.

On the upper surface of the wedge portion 13b formed as shown in FIG. 3, as shown in FIG. 4, a cushion layer 12 serving as an insole material is adhered and laminated.

Then, a wide cavity 14 is formed in the center of the processed sole material A.

When footwear using processed sole material A having such a configuration is worn, the cushion layer 12 on the hollow portion 14 is compressed by pressure.
As shown in Figure 5, the foot is concave and has the unique foot shape of the employer.
This has the effect of providing the wearer with the best fit and at the same time retaining cushioning properties.

In addition, by using a processed sole material having the hollow portion 14, the material used for the wedge portion can be saved, which not only leads to a reduction in the weight of the footwear itself, but also contributes to a reduction in production costs. That's what I do.

Note that the tape-like material forming the wedge portion 13b as shown in FIG. 3 can be obtained at a time by cutting a large plate as shown in FIG. 6, and the tape-like material can be cut each time. Since it is not necessary, it also helps improve production efficiency.

The width and thickness of this tape-like material, especially the maximum thickness at the heel, vary depending on the type and size of the footwear, so the required dimensions may be determined each time.

Incidentally, the hollow portion can be filled with elastic pieces of rubber or synthetic resin or pieces of cork of arbitrary shapes at arbitrary places to adjust the depression appropriately.

In addition, in order to create a shape that allows the arch of the sole of the foot to fit perfectly into the non-treading part corresponding to the flat tread of the sole, it is preferable to provide an arch cushion part at this point, and this is done after forming the wedge part. It is also possible to use a method in which an arch cushion piece is interposed between the wedge portions, or to create an arch portion only at the wedge portion at the time of forming the wedge portion.

The material is preferably the same as the tape-like material forming the wedge portion, or one having similar cushioning properties.

Most preferably, the tape-shaped material forming the wedge portion and the insole material are made of rubber or synthetic resin.

The cushioning properties of this sole material can be further increased by providing a cushion layer 15 thereon as shown in FIG.

The above-mentioned processed sole material A using the sole material of this invention can be used not only for athletic shoes such as competition and jogging shoes but also for footwear such as sandals.

In the case of sandals, there is a wedge part made of rubber or synthetic resin elastic material, or a rubber or synthetic resin elastic material from the heel to the non-stepping part of the sole material such as press board, pulp board, or leather board. If you wrap it in a tape shape and use a surface layer material such as leather, synthetic leather, vinyl leather, leather board, pulp board, felt, or non-woven fabric on top of it, use appropriate combinations depending on the type of sandals, such as high-quality sandals or peach sandals. good.

In short, this invention is a sole material in which the wedge part is wrapped around the sole material from the heel part to the non-stepping part in the shape of a tape of a predetermined width so that the heel part is thicker. By bonding and laminating the cushion layer that serves as the midsole material or the surface layer material and using it as a processed sole material in footwear, the cavity created by forming the tape-like wedge portion of a predetermined width provides cushioning properties and employment when worn. It can provide a unique fit to the wearer, and its practical value is extremely large.

[Brief explanation of the drawing]

Fig. 1 is a longitudinal cross-sectional view of a conventional bottom material including a wedge, Fig. 2 is a plan view showing the shape of a conventional wedge portion, and Fig. 3 is an example of forming a wedge portion in a bottom material of this invention. A perspective view, FIG. 4 is a cross-sectional view showing the structure of a processed bottom material using the bottom material of this invention, and FIG. 5 is a cross-sectional view showing changes in the processed bottom material using the bottom material of this invention. Fig. 6 is an explanatory view showing an example of cutting a tape-like material for forming a wedge used in this invention, and Fig. 7 is a cross section showing another example of the structure of the processed bottom material used in this invention. It is a diagram. 11... Outsole, 12... Cushion layer J3b...
Wedge part, 14... hollow part.

Claims (3)

[Scope of utility model registration request] (1) A tape-shaped wedge part is formed around the upper surface of the sole material cut into a predetermined shape from the heel part to the unstepped part, with a constant width and being thicker near the heel part. Sole material for footwear. (2) The sole material for footwear according to claim 1, which is a registered utility model, characterized in that a cushion layer is interposed between the wooden sole material and the tape-shaped wedge portion. (3) The sole material for footwear according to claim 1, wherein the material forming the tape-shaped wedge portion is an elastic body of rubber or synthetic resin.