JP3080125U - Insole and shoes using the insole - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a simple structure and easy production, and to further enhance cushioning so as to effectively disperse tread pressure on the sole of the foot and to give a moderate stimulus to the sole of the foot. It is possible to provide an insole that can be easily worn for a long time, so that the feet are not tired, and in addition, the design flexibility is wide and the commercial value can be easily increased. SOLUTION: A convex portion 1a and a concave portion 1 each having a hemispherical cross section on the surface.
b is formed on the back surface of the elastic core 1 made of a foamed synthetic resin material in the form of a thick-walled plate, which is formed alternately and continuously, in a thin plate shape slightly harder than the foamed synthetic resin material constituting the elastic core portion 1. A back plate 2 made of an elastic synthetic resin material is compression-bonded and integrally combined to form an insole body having a predetermined last shape,
The insole 10 is formed by covering the surface of the insole body and at least a part of the back surface thereof with the fabric 3 for the skin and affixing the same integrally.

Description

[Detailed description of the invention]

[0001]

[Technical field to which the invention belongs]

 The present invention relates to insoles for shoes such as men's shoes and women's shoes and shoes using such insoles, and in particular, to shoes in which the inner bottom is open such as sandals. It relates to an insole suitable for use.

[0002]

[Prior art]

 In general, this kind of insole has been used to prevent the shoe from rubbing by filling the gap between the shoe and the foot when the inner shape of the shoe and the wearer's foot are incompatible. Many insoles with functions such as cushioning (cushioning), moisture proofing and antibacterial properties have been developed and put into practical use. In addition, walking is attracting attention from the viewpoint of maintaining health, and there is a demand for shoes and insoles that have a structure that will not tire the feet even after long hours.

In order to respond to such a demand, cushioning is achieved by forming a multilayer structure in which air is sealed in the middle or an elastic layer such as a foamed resin is disposed between the skin layer and the back layer. As a result, the foot pressure is dispersed throughout the sole to reduce fatigue, and the sole is stimulated by providing irregularities on the surface or by providing convex parts on the surface corresponding to the soles on the surface. A number of things that reduce fatigue have been proposed and put into practical use.

[0004]

[Problems to be solved by the invention]

 However, when these insoles are examined in detail, for example, when air is enclosed, the structure becomes complicated and the production cost increases. There is a problem that it is difficult to sufficiently cope with individual differences. On the other hand, the multilayer structure has advantages that the structure is relatively simple and easy to manufacture, and that the cushioning property can be easily increased by increasing the thickness of the intermediate elastic layer.

[0005] However, most insoles having a multilayer structure are configured to be inserted into the inner sole of a shoe having an upper, and these are insulated around the inner sole such as sandals. When it is used for shoes of any form, the intermediate elastic layer is likely to undergo horizontal lateral deformation and swelling in the outer peripheral direction.In particular, if the intermediate elastic layer is thickened to increase the cushioning property, the tendency becomes severe, and walking will occur. It also causes trouble. In addition, the outer peripheral laminated surface is exposed as it is, and it is not suitable for use unless another complicated measure is taken to supplement this.

The present invention has been made in view of the above problems, has a simple structure, is easy to manufacture, and further enhances cushioning to effectively disperse the tread pressure on the soles. Uses an insole that can give a moderate stimulus to the sole of the foot, so that the foot does not get tired even after prolonged periods of time, and has a wide range of design choices and is easy to increase product value. The purpose is to provide worn shoes.

[0007]

[Means for Solving the Problems]

 In order to achieve the above object, the insole according to the present invention has a back surface of an elastic core portion made of a thick plate-like foam in which convex portions and concave portions having a hemispherical cross section are continuously and alternately formed on the surface. In addition, a back plate made of a thin plate-like elastic body that is slightly harder than the foam constituting the elastic core portion is crimped and integrally combined to form an insole main body having a predetermined last shape, and It is characterized in that the insole body is covered with a fabric for the skin from the surface to at least a part of the back surface and is adhered integrally.

[0008] According to the insole according to the first aspect, the elastic core portion, which has elasticity due to treading pressure and elastically deforms to obtain a shock absorbing property, is brought closer to the back surface by the back plate for shape retention attached to the back surface. In addition to restricting the horizontal deformation of the back part, the outer peripheral side is wrapped around the outer side of the back side, and is wrapped around the outer periphery of the back side of the back plate to prevent bulging in the outer side direction by the cloth for skin. Is controlled. Therefore, even if the elastic core is made relatively thick (about 10 mm), horizontal lateral deformation during walking can be suppressed, and thus the cushioning property is improved and the tread pressure is effectively distributed throughout the soles. Can be done. In addition, since a plurality of hemispherical convex portions and concave portions are formed alternately and continuously on the front side surface of the elastic core portion, an appropriate stimulus can be given to the sole when walking, and these combined effects can be obtained. As a result, shoes using the insole of the present invention are less likely to be tired even after prolonged use.

Further, since the back plate for maintaining the shape is made of a thin plate-like elastic body (including a foam) which is slightly harder than the foam of the elastic core, the back plate performs the function of maintaining the shape of the elastic core. At the same time, when attached to the inner sole of a shoe, the shoe easily deforms following the deformation of the outsole of the shoe, and the connection between the two can be secured.

On the other hand, the foam forming the elastic core portion is formed by foam molding using a mold, or by forming a rectangular parallelepiped foam and then cutting the surface of the foam into wavy irregularities. The elastic core and the back plate can be easily formed by pressing the elastic material to be the back plate on the back surface of the elastic core portion and the back plate which are pressed together and cut into a predetermined last. Can be obtained at the same time, so that its production is easy.

[0011] Further, as the material for the skin, various materials having different tactile sensations, colors, patterns, characteristics, and the like can be selected as long as the material has flexibility and a certain level of tension. Therefore, it is easy to increase the commercial value.

[0012] Like the insole according to claim 2, the foam of the elastic core portion may be a foam of polyurethane.

[0013] According to the insole according to the second aspect, a polyurethane foam having a soft cushioning property can be obtained due to the characteristics of the polyurethane foam.

According to a third aspect of the present invention, the foam of the elastic core may be a rubber foam.

According to the insole according to the third aspect, a foam having a somewhat hard cushioning property can be easily obtained due to the characteristics of the rubber foam, and the wearing comfort is stabilized.

As in the insole according to the fourth aspect, the elastic body of the back plate for maintaining the shape may be an EVA foam.

According to the insole according to the fourth aspect, the backing plate performs the function of retaining the shape of the elastic core portion and the shoe due to the characteristics of the EVA foam, which is an elastic body that is relatively hard and has a high shape retention force. When attached to the inner sole of the shoe, the shoe easily deforms following the deformation of the outsole of the shoe, so that the connection between the two can be made more reliable.

[0018] Like the insole according to claim 5, the cloth for the skin can be a synthetic fiber cloth.

According to the insole according to the fifth aspect, as long as the material has air permeability, flexibility and a certain level of tension, various materials having different tactile sensations, colors and patterns can be selected. There is a wide range of choices for options, and it is easy to increase product value.

[0020] As the insole according to claim 6, the cloth for the skin may be synthetic leather finished soft and thin.

According to the insole according to the sixth aspect, it is possible to obtain a product having excellent durability, high quality, and high commercial value.

A shoe according to a seventh aspect is characterized in that the insole according to any one of the first to sixth aspects is configured to be adhered to an inner bottom of the shoe.

According to the seventh aspect of the present invention, by the above-described operation of the insole adhered to the inner sole, the foot can be hardly tired even for a long time, and the design can be excellent.

[0024]

Embodiments of the present invention will be described below with reference to the drawings.

1 to 4 show an embodiment of the insole for shoes according to the present invention, FIG. 1 is a longitudinal sectional view showing a schematic configuration of the insole of the present embodiment, FIG. 2 is a perspective view, and FIG. 4 (a) to 4 (d) are schematic explanatory views of the manufacturing procedure. FIG. 5 is a perspective view of a shoe using the insole.

In this example, first, a polyurethane resin is foam-molded by a mold, and as shown in FIG. 4 (a), a convex portion 1a having a square planar shape and a hemispherical cross section on the front side surface is formed. A thick plate-shaped polyurethane sponge material 11 having a thickness of 10 mm, in which a plurality of concave portions 1 b are formed alternately and continuously, is produced. Then, a 1.5 mm-thick thin plate-shaped polyurethane sponge material 11 is formed on the back surface of the polyurethane sponge material 11. EVA sponge material 12 was pressed and integrated via a non-curing adhesive. The ridges 1a and the valleys 1b can also be formed continuously and alternately by forming a rectangular polyurethane sponge material without using a mold and then cutting the surface into wavy irregularities.

Next, these are cut into a predetermined shape of a last, and as shown in FIG. 4B, a plurality of protrusions made of a polyurethane sponge material 11 and formed continuously and alternately on the front surface. An elastic core portion 1 on the front side having a predetermined footprint shape having a portion 1a and a concave portion 1b, and a back plate 2 for retaining a shape made of an EVA sponge material 12 are crimped on the back surface of the elastic core portion 1. A plurality of intermediate products as the integrated insole body 13 were taken out.

Next, a synthetic fiber cloth 14 having a raised surface is prepared, and as shown in FIG. 4 (c), the synthetic fiber cloth 14 is bonded to the entire front and side surfaces by a non-curing adhesive by a pressing die 15 having a flat lower surface. By sticking and bonding to the front surface of the elastic core 1 to which the agent was applied, the elastic core 1 was adhered along the irregularities on the front surface of the elastic core 1. In addition, by using a pressing die having a concave and convex corresponding to the concave and convex formed on the surface of the elastic core portion 1 on the lower surface, or by using a pressing roll, the elastic core portion 1 can conform to the concave and convex on the surface of the elastic core portion 1. The synthetic fiber cloth 14 can be adhered to the garment.

Subsequently, as shown in FIG. 4 (d), the attached synthetic fiber cloth 14 is slightly larger than the elastic core portion 1 and the back plate 2 and cut into a substantially similar footprint to cut the skin. As shown in FIGS. 1 and 3, the outer peripheral side 3c of the elastic core portion 1 is completely covered with the outer peripheral edge portion 3a of the Of the elastic core portion 1 and the back surface 2a of the back plate 2 through a non-curable adhesive. 1 and 2, the insole 10 has a large number of hemispherical cross-section convex portions 1a and concave portions 1b alternately and continuously formed on the front surface thereof, as shown in FIGS. Was made.

Then, the insole 10 was used for a shoe 20 shown in FIG. The shoe 20 of the present example shown in FIG. 5 is a sandal having an inner bottom that is open. The insole 10 is attached to the inner bottom 21 via a non-curing adhesive.

Here, in the above-described insole 10 of the present example, the elastic core 1 made of polyurethane sponge obtains a cushioning property by being plastically deformed by an elastic force due to the stepping pressure. Horizontal deformation caused by the back plate 2 for shape retention stuck on the back surface, and the cloth 3 covered on the outer periphery of the back surface 2a of the back plate 2 by enclosing the outer peripheral side from the front side surface. And bulging in the outer peripheral direction is suppressed, so that even if the thickness is relatively thick, about 10 mm, horizontal lateral deformation at the time of walking can be suppressed. Can be effectively dispersed throughout the soles. In addition, a moderate stimulus can be given to the sole of the foot by the hemispherical convex portion 1a and the concave portion 1b formed on the front surface of the elastic core portion 1 during walking. Fatigue can be greatly reduced.

On the other hand, the back plate 2 for retaining the shape is made of EVA sponge, which is an elastic body that is relatively hard and has a high retaining force for the shape. When attached to the sole 21, the shoe 20 is easily deformed following the deformation of the outsole 22 of the shoe 20, and the connection between the two can be ensured.

Therefore, the shoe 20 of the present example, in which the insole 10 is adhered to the inner sole 21 and integrated, has good wearing comfort and is hard to be tired even after long hours.

In the insole 10 of the present embodiment, the elastic core portion 1 is made of polyurethane sponge, but this is only an example. It may be made of a foam obtained by foaming and vulcanizing rubber, or may be made of another type of foamed synthetic resin as long as it is plastically deformed by elasticity due to stepping pressure and is easily foamed. The foam constituting the elastic core portion 1 is usually a so-called sponge material having a continuous foam, but a closed foam can also be used. In particular, the back plate 2 may be made of an EVA independent foam.

Further, a raised synthetic fiber cloth is used as the fabric 3 for the skin, but this is merely an example. If the cloth 3 has air permeability, flexibility and a certain level of tension, for example, Various materials with different tactile sensations, colors, patterns, and characteristics can be selected, such as printed designs, woven designs, and so on. Can increase value. In addition, it is preferable to use not only synthetic fiber cloth but also synthetic leather which is air-permeable and has a soft and thin finish, so that it is excellent in durability and has a high-class feel and high commercial value. can do.

Further, it goes without saying that the insole 10 according to the present invention can be applied not only to the sandal type shoes 20 described above but also to general shoes such as men's shoes and women's shoes. However, in this case, it is preferable to use a thin material having excellent air permeability for the fabric 3.

[0037]

[Effect of the invention]

 As described above, the insole according to the present invention is made thicker because the lateral core deformation for walking can be suppressed even if the core portion for obtaining the buffering property is made relatively thick. As a result, the foot pressure can be effectively dispersed throughout the sole by increasing the cushioning property, and in addition, a moderate stimulus can be applied to the sole by the hemispherical convex and concave portions formed on the front side surface. The combined effect of these has an excellent effect of greatly reducing foot fatigue during walking. In addition, the structure is simple and easy to manufacture, and the fabric for the skin used for the insole is flexible and has a certain level of tension. Since various materials having different characteristics and characteristics can be selected, the degree of freedom of design selection is wide, and it is easy to increase the commercial value.

In the insole according to the second aspect, the elastic core portion is made of a polyurethane foam, so that it can have a comfortable and soft cushioning property.

In the insole according to the third aspect, the elastic core portion is made of a rubber foam, so that the insole can be suitable for an application in which a somewhat hard cushioning property of eyes is preferred.

In the insole according to the fourth aspect, since the back plate for maintaining the shape is made of an EVA foam which is an elastic body which is relatively hard and has a high shape retaining force, the shape holding of the elastic core portion is maintained. In addition to fulfilling the function, when attached to the inner sole of the shoe, the shoe easily deforms following the deformation of the outsole of the shoe, and the connection between the two can be secured.

In the insole according to the fifth aspect, since synthetic fiber cloth is used as the fabric for the skin, various materials having different tactile sensations, color patterns, and the like are provided as long as they have air permeability, flexibility, and a certain or more tension. Can be selected, the degree of freedom of design choice is wide, and it is easy to increase the product value.

[0042] In the insole according to the sixth aspect, since synthetic leather finished to be soft and thin is used as the fabric for the skin, the insole is excellent in durability, high-grade, and high in commercial value. be able to.

In the shoe according to the seventh aspect, since each of the above-mentioned insoles is attached to the inner sole of the shoe, the above-mentioned effect of the insole attached to the inner sole provides good comfort. In addition, it is possible to make the foot hard to be tired even for a long time, and to be excellent in design.

[Brief description of the drawings]

FIG. 1 is a longitudinal sectional view showing a schematic configuration of an embodiment of a shoe insole according to the present invention.

FIG. 2 is a perspective view of the insole of FIG. 1;

FIG. 3 is a rear view of the insole of FIG. 1;

FIGS. 4 (a) to 4 (d) are schematic explanatory diagrams of a manufacturing procedure of the insole of FIG. 1;

FIG. 5 is a perspective view of a shoe using the insole of FIG. 1;

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Elastic core part 1a Convex part 1b Concave part 1c Outer side surface 2 Back plate 2a Back surface 3 Fabric 3a Outer peripheral edge 10 Insole 11 Polyurethane sponge material 12 EVA sponge material 13 Insole body 14 Synthetic fiber cloth 15 Stamping 20 Shoes 21 Inner bottom 22 Outsole

Claims (7)

[Utility model registration claims] 1. A foam constituting an elastic core portion on a back surface of an elastic core portion made of a thick plate-like foam having a convex portion and a concave portion having a hemispherical cross section continuously and alternately formed on a surface thereof. A back plate made of a thin plate-like elastic body, which is slightly harder than that, is compression-bonded and integrally formed to form an insole body having a predetermined footprint shape, and at least a part of a surface of the insole body from the front surface to the back surface An insole characterized by being covered with a fabric for the skin over a period of time and stuck together. 2. The insole according to claim 1, wherein the elastic core foam is a polyurethane foam. 3. The insole according to claim 1, wherein the elastic core foam is a rubber foam. 4. The insole according to claim 1, wherein the elastic body of the back plate is an EVA foam. 5. The insole according to claim 1, wherein the skin material is a synthetic fiber cloth. 6. The insole according to claim 1, wherein the skin material is synthetic leather. 7. A shoe, wherein the insole according to claim 1 is adhered to an inner sole of the shoe.