JPH09299105A - Inner sole for shoe - Google Patents

Abstract

PROBLEM TO BE SOLVED: To inexpensively provide a lightweight inner sole with excellent permeability and form keeping performance without harming tight contact between a foot and a shoe, shock absorbing performance, and finger pressing effect. SOLUTION: This inner sole 1 for a shoe is made by the following procedure. When an inner sole member made by coating a prepared latex foam on a substrate and gelling and drying is to be vulcanized to be formed into a prescribed shape in a metal mold, the periphery part of a heel part area C is continuously and integrally formed with a wall shape 4, and dents 61 are formed on periphery back sides 51 of the inside and the outside of border parts 17 between a foot arch part area B and the heel part area C. Thereafter, a cushioning pad material 7 is adhered to the dents 61.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention is intended to provide an insole for shoes which is excellent in breathability and shape retention, and which also considers fit and stability of the heel portion.

[0002]

2. Description of the Related Art Insoles for shoes that have been generally used in the past have a flat shape obtained by punching out a sheet-shaped material made of leather, felt or an elastic body of synthetic resin into a foot shape, or a raised soil bump. There was provided a so-called cup insole in which the peripheral edge of the heel portion was continuously and integrally raised in a wall shape so as to conform to the shape of the heel. In particular, cup insoles are often used for sports shoes, and the surface part that contacts the foot has a pile-like cloth with good moisture absorption on the foot,
It is provided with a non-woven fabric attached.

[0003] These cup insoles fill the space between the foot and the inner surface of the shoe in the shoe, improve the fit of the foot, enhance the stability of the foot during walking and running, and play sports. It has been used to keep the inside of shoes comfortable by absorbing and releasing the heat and sweat generated from the feet.

The applicant of the present invention has filed Japanese Patent Application No. 7-287909.
In particular, invented an insole for shoes with improved stability of the heel. The present invention provides a pad having a storage hole formed in the peripheral portion on the inner side and the outer side of the boundary between the arch region and the heel region, and having the shaping and cushioning properties such as a bouncing putty in the storage hole. The material is inserted and fixed.

According to this invention, the space between the foot and the sole at the heel portion is filled, and the foot comes into close contact with the shoe so that the loss of force during exercise is eliminated. In addition, it has various excellent characteristics such that the impact received from the shoe sole is alleviated to prevent the damage to the foot, and the sole can be stimulated to expect an acupressure effect.

However, the above invention does not take into consideration the air permeability, weight and shape retention of the insole itself. Furthermore, bouncing putty is a material that exhibits an extremely excellent function of easily plastically deforming against slow stress and showing good impact resilience against shocking stress,
Since it is a relatively expensive material, it was not possible to use a large amount of bouncing putty or to use inexpensive bouncing putty on shoes.

[0007]

Therefore, the present invention is light and breathable without impairing the excellent features of Japanese Patent Application No. 7-287909 such as adhesion between feet and shoes, shock absorption, and acupressure effect. It aims to provide an insole having excellent shape and shape retention at a low cost.

[0008]

BEST MODE FOR CARRYING OUT THE INVENTION In vulcanizing an insole member obtained by applying a prepared latex foam to a base cloth and gelling and drying it into a predetermined shape in a mold, the peripheral portion of the heel area is continuously and integrally wall-shaped. Shoes obtained by forming a concave portion on the inner peripheral side and the outer peripheral side of the boundary portion between the arch region and the heel region, and then bonding a cushioning pad material to the concave portion. It is an insole.

If a concave portion and a groove groove connected to the concave portion are provided in the forefoot region of the insole, air is sent to the groove groove when the concave portion is crushed or restored during walking, and further Aeration effect can be obtained. In addition, the cushioning pad material that adheres to the inner back side and the outer back side of the boundary between the arch area and the heel area is 40 ± 3% from the rear end of the foot on the inner side.
Adhesion to the range of 16 ± 3%, and the outer side of the instep from the rear end of the foot to the range of 44 ± 3% to 20 ± 3%, the stability of the heel, foot and shoes Optimal effects can be expected in terms of adhesion, shock absorption, and acupressure effect.

The cushioning pad material has a hardness equal to or higher than that of the insole member, and is latex foam, polyurethane sponge, a member obtained by impregnating bouncing putty into polyurethane sponge, or bouncing putty or polyurethane sponge impregnated with bouncing putty. It is preferable that the above-mentioned members are coated alone or in combination with each other and covered with a synthetic resin film.

[0011]

【Example】

(Embodiment 1) FIG. 1 is a plan view of an insole according to the present invention, FIG. 2 is a rear view of the same, and FIG. 3 is an end view of the XX line portion of FIG. The shoe insole 1 can be divided into a forefoot region A, an arch region B, and a heel region C. Further, in this embodiment, the insole member 2 in which the mixed latex foam 11 is applied to the base fabric 10 and gelled and dried only in the arch region B and the heel region C is used. In the front foot region A, a non-woven fabric made of fiber having excellent air permeability, felt, rubber foam or the like is used. Further, even a material having poor air permeability such as EVA foam, polyethylene foam or polyurethane foam can be used by punching them to improve air permeability.

The insole member 2 used in the arch region B and the heel region C comprises a base fabric 10 and a blended latex foam 11.
After vulcanization and molding into a predetermined shape in the mold after applying and gelling and drying, the peripheral edge portion 5 of the heel region C is continuously and integrally formed into the wall-shaped 4, and the arch region B and the heel region are formed. Backside 51 of a peripheral edge between the inner shell side and the outer shell side of the boundary portion 17 of the region C
A recess 61 is formed in the.

A buffer pad material 7 is adhered to the recess 61. The cushioning pad material 7 has hardness equal to or higher than that of the insole member 2, and is latex foam, polyurethane sponge, a member obtained by impregnating polyurethane sponge with bouncing putty, or bouncing putty or polyurethane sponge impregnated with bouncing putty. A member in which each member is covered alone or in combination with a synthetic resin film is preferable. As a method for adhering the cushioning pad material 7 and the insole member 2, when the cushioning pad material 7 is latex foam, liquid is used for the recess 61 of the insole member 2 or the cushioning pad material 7 in addition to the method of adhering. Since it is possible to bond the cushioning pad material 7 and the insole member 2 only by applying the latex foam, there is an advantage that the bonding work does not take time.

Further, in this embodiment, a patch 12 made of natural leather, artificial leather, synthetic leather or the like is sewn on the upper portion of the base cloth 10 of the insole member 2, and a woven fabric is formed on the back side of the insole member 2. The backing material 13 made of knitted material or the like is sewn or bonded at the same time for vulcanization molding in the mold.
This is optional and not a requirement of the invention.

When the insole 1 for shoes of the present invention is used, the cushioning property is provided on the backside 51 of the peripheral portion between the inner side and the outer side of the boundary portion 17 between the arch region B and the heel region C in front of the footing portion 3. Since the pad material 7 is adhered, this portion projects 6 on the front side. Therefore, the user's heel moves so as to move to the rear of the heel at this protruding portion 6. On the other hand, since the peripheral edge portion 5 of the heel portion area C is continuously and integrally formed in the wall surface shape 4,
After all, the heel of the user is firmly received so as to be supported by the wall surface 4. As a result, the heel of the user is
The foot pad 3 of the shoe insole 1 becomes stable.

In addition to the above-mentioned action, the cushioning pad material 7 fills the space between the foot and the sole at the heel, and the foot closely contacts the shoe to reduce the loss of force during exercise. In addition, it reduces the impact received from the sole of the shoe to prevent damage to the foot, and also stimulates the sole of the foot to exert an acupressure effect.

In order to satisfy the various requirements as described above, as a result of an experiment, as shown in FIG. 4, a cushioning pad material is provided on the instep side at 40 ± 3% or more from the rear end of the foot. 16 ±
Adhesive to the range of 3%, the outer shell side is 44 ± from the rear end of the foot length
Adhesion within the range of 3% to 20 ± 3% was found to be most effective.

If latex foam, polyurethane sponge, polyurethane sponge or the like is used as the cushioning pad material 7, an inexpensive product can be obtained, although it is slightly inferior to the bouncing putty in terms of adhesion and shock absorption. Of course, it does not prevent the use of a member in which polyurethane sponge is impregnated with bouncing putty, a member in which bouncing putty is impregnated with polyurethane sponge, or a member in which polyurethane sponge is impregnated with bouncing putty is coated with a synthetic resin film.

(Embodiment 2) FIG. 5 shows a second embodiment, in which the peripheral edge portion 5 of the heel portion area C is continuously and integrally formed into a wall surface 4 as in the shoe insole of the first embodiment. At the same time, the recessed portion 61 is formed on the back side 51 of the peripheral portion between the inner shell side and the outer shell side of the boundary portion 17 between the arch region B and the heel region C to bond the cushioning pad material 7.

The difference from the first embodiment is that the arch B
Not only the heel area C but also the forefoot area A, the entire shoe insole 1 is mixed with the base cloth 10 to prepare the latex foam 1
1 is applied, gelled and dried, and then vulcanized and molded into a predetermined shape in a mold to manufacture. At that time, the peripheral edge portion 5 of the heel portion area C is continuously and integrally formed into the wall surface shape 4, and the inner peripheral side and the outer peripheral side of the boundary portion 17 between the arch portion area B and the heel portion area C are opposite to the outer peripheral side. In the concave portion 61 of 51 and the front foot region A, the concave portion 8 and the groove groove 9 are formed.

The recess 8 provided in the forefoot region A and the plurality of recessed grooves 9 connected to the recess 8 are crushed or restored by the action of the recess 8 being crushed or restored as the foot moves up and down during walking. Since air is sent to the groove 9, a further ventilation effect can be obtained.

[0022]

According to the present invention, the insole member 2 obtained by applying the prepared latex foam 11 to the base cloth 10 and gelling and drying the same is used.
The shoe insole 1 is manufactured by vulcanization molding into a predetermined shape in a mold. A member obtained by applying the prepared latex foam 11 to the base cloth 10, gelling and drying, and then vulcanized and molded into a predetermined shape in a mold is a material excellent in terms of breathability, weight and shape retention. Is. It is shown in Table 1 below.

[0023]

[Table 1]

"Heat retention" in the table indicates that the heat of the material is difficult to escape, "X" indicates that the material retains heat and is difficult to escape, and "○" indicates heat Indicates that the material is easy to escape. “Δ” indicates that the performance is intermediate between “x” and “◯”. Therefore, "○"
The materials described above indicate that they are materials that easily release heat and, as a result, have excellent breathability. As can be seen from this table, the material used in the present invention does not have heat retention, has excellent air permeability, has a low specific gravity, and is also excellent in compression set (shape retention).

In the present invention, the heel of the user is the peripheral portion 5 of the heel region C formed on the wall surface 4 integrally and continuously with the portion 6 protruding to the front side by adhering the cushioning pad material 7. Since it is fixed to the stepping part 3 between the legs, the foot does not move back and forth in the shoe. The cushioning pad material 7 fills the space between the foot and the sole of the heel,
The feet are in close contact with the shoes to reduce power loss during exercise. In addition, it reduces the impact received from the sole of the shoe to prevent damage to the foot, and stimulates the sole of the foot to exert an acupressure effect.

Further, if latex foam, polyurethane sponge, polyurethane sponge, etc. are used, it is possible to make an inexpensive product although it is slightly inferior to the bouncing putty in terms of adhesion and impact absorption. If a member in which a bouncing putty or a polyurethane sponge is impregnated with a bouncing putty is used alone or in combination and is covered with a synthetic resin film, a shoe insole having excellent adhesion between the foot and the shoe and shock absorption can be obtained.

Further, if the concave portion 8 and the concave groove 9 are formed in the forefoot region C, the concave groove 8 is crushed or restored according to the up and down of the foot during walking, so that the concave groove 9 is filled with air. Therefore, it is possible to expect a further ventilation effect.

[Brief description of drawings]

FIG. 1 is a plan view showing an embodiment of a shoe insole of the present invention.

FIG. 2 is a rear view of FIG.

FIG. 3 is an end view of the XX line portion of FIG.

FIG. 4 is an explanatory view showing a mounting position of a cushioning pad material of the shoe insole of the present invention.

FIG. 5 is a plan view of another embodiment of the insole for shoes according to the present invention.

[Explanation of symbols]

 1 Insole for shoes 2 Insole member 3 Footing part 4 Wall surface shape 5 Peripheral part 51 Peripheral part back side 6 Protrusion 61 Recess 7 Buffer pad material 8 Recess 9 Groove groove 10 Base cloth 11 Latex foam 12 Patch skin 13 Backing material 17 Boundary Area A Forefoot area B Arch area C Heel area

Claims (4)

[Claims] 1. A vulcanization molding of an insole member obtained by applying a blended latex foam to a base cloth and gelling and drying it into a predetermined shape in a mold, continuously forming a peripheral wall portion of a heel region into a wall shape. At the same time, after forming a recess on the inner peripheral side and the outer peripheral side of the boundary between the arch region and the heel region, the recesses are formed, and then a cushioning pad material is adhered to the recesses. 2. When vulcanizing and molding an insole member, which is prepared by applying a blended latex foam to a base cloth and gelling and drying, into a predetermined shape in a mold, the peripheral portion of the heel region is continuously and integrally formed into a wall shape. At the same time, the front foot region is provided with a recess and a groove groove connected to the recess, and a recess is formed in the peripheral portion between the inner side and the outer side of the boundary between the arch region and the heel region, and then the arch. An insole for shoes in which a cushioning pad material is adhered to a concave portion on the inner peripheral side and the outer peripheral side of the boundary between the partial region and the heel region on the backside of the peripheral portion. 3. The cushioning pad material adhered to the back side of the peripheral edge between the inner side and the outer side of the boundary between the arch region and the heel region is 40 ± from the rear end of the foot on the inner side. 3% to 16 ± 3
Adhesive to the range of%, and the outer side is 44 ± 3 from the rear end of the foot length
The insole for shoes according to any one of claims 1 and 2, which is adhered in the range of 20% to 20 ± 3%. 4. The cushioning pad material has a hardness equal to or higher than that of the insole member, and is latex foam, polyurethane sponge, a member obtained by impregnating bouncing putty into polyurethane sponge, or bouncing putty or polyurethane sponge impregnated with bouncing putty. The shoe insole according to any one of claims 1 to 3, which is a member in which each of the members is covered individually or in combination with a synthetic resin film.