JP2003304909A - Platform for molding insole for shoe - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To mold an insole having a shape which is easy to maintain a neutral position of the body and restrains force transmission loss to move smoothly and effectively, in a platform for molding an insole composed of a thermoplastic resin. <P>SOLUTION: The thickness is formed thicker on a big toe side 10 and gradually reduced toward a little toe side 9, from a plantar arch part 5 to a toe part 7 of the platform 1, so that a posture of the sole of a user when molded is corrected substantially flat from the big toe side 10 to the little toe side 9. Thus, the insole which has a substantially flat shape from the big toe side 10 to the little toe side 9, is molded. <P>COPYRIGHT: (C)2004,JPO

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a footbed for molding an insole for shoes, which is used when molding an insole formed of a resin having thermoplasticity.

[0002]

2. Description of the Related Art Conventionally, as an insole that is inserted into a shoe to keep the body in a neutral position and to reduce the loss of the force transmitted from the sole to the shoe, it is molded according to the shape of the sole of each user. What is done is known. This type of insole is configured by incorporating a resin having thermoplasticity or by sticking it to the back surface. Molding of the insole is performed by heating the above-mentioned thermoplastic resin in an oven or the like to soften it, placing it on a step made of a substantially flat sponge layer, and further placing a user's foot from above to apply pressure. Has been done. In such a substantially flat step, the sponge layer pressed by the user's foot is deformed according to the user's foot mold, and an insole that substantially matches the user's foot mold is molded.

Further, a concave pseudo toe shape having a plurality of arch shapes is formed in the sponge layer from the heel portion in contact with the heel of the user to the toe portion in contact with the toe of the user, so that an insole capable of correcting flat foot or hallux valgus can be corrected. Steps for molding are also known (for example, Mitsubo No. 308106).
(See Japanese Patent No. 7).

[0004]

By the way, in the human foot, a large bone is formed on the thumb side rather than the little finger side,
The structure is such that the thumb side can support a larger load. When such a human foot is placed on a flat plate-shaped soft sponge layer and weight is applied, a larger load is applied to the thumb side than to the little finger side, so that the amount of depression on the thumb side increases.

Therefore, when the insole is molded using a step on a substantially flat plate, as shown in FIG. 4, in the front foot portion from the arch portion to the toe portion, the little finger side 31 relatively moves up and is twisted. The insole 30 is molded.
The insole 30 in which the little finger side 31 is deformed is unbalanced, it is difficult to keep the user's body in the neutral position, and loss occurs when the force applied from the sole of the foot is transmitted to the shoes. Therefore, the user cannot perform a smooth and lean exercise. Such deformation of the insole 30 on the little finger side 31 at the time of molding cannot be solved even in the stepped foot formed with the pseudo foot mold having the arch shape shown in Japanese Utility Model No. 3081067.

The present invention has been made in order to solve the above-mentioned problems, and has a shape that makes it easy to maintain the neutral position of the body, suppresses power transmission loss, and enables smooth and lean exercise. An object is to provide a step that can be molded into an insole.

[0007]

In order to achieve the above object, the invention of claim 1 is made of a plate-shaped member, and is a standard foot mold from the heel part in contact with the heel of the user to the toe part in contact with the toe of the user. Based on, a concave pseudo foot mold is formed,
A shoe for molding an insole that fits the user's foot by pressing an insole formed of a thermoplastic resin on the upper surface in a heated state and pressing the user's foot from above to deform the insole. In the step for molding the insole, the plate-shaped member is formed so that the thumb side is thick and the thin finger is gradually thinned toward the little finger side from the arch part in contact with the user's arch to the toe part.

In this structure, since the thumb side of the plate member is formed thick and gradually becomes thinner toward the little finger side, if the step is placed on the ground, the slope of the descending slope from the thumb side to the little finger side. Is formed. When a user puts a foot on a step and pressurizes it at the time of molding the insole, a larger load is applied to the thumb side, and the amount of depression on the thumb side increases. At this time, since the thumb side of the plate-shaped member is formed thick beforehand, the posture of the sole of the user is corrected to be substantially flat, and the insole sandwiched between the sole and the plate-shaped member is From the thumb side to the little finger side, it is molded into a substantially flat and neutral shape.

According to a second aspect of the invention, in the step for molding the insole for shoes according to the first aspect, the plate-shaped member is
The heel portion is formed to be thick and is gradually thinned from the arch portion to the toe portion. In this configuration, the footbed is formed in a forwardly inclined shape, so that the insole that corrects the sole posture to the forward inclination and fits the sole shape of the shoe in the forward inclined posture is molded.

Further, the invention of claim 3 is the step for molding the insole for shoes according to claim 1 or 2,
The plate-shaped member has a first layer and a second layer made of materials having different hardnesses, and the first layer is made of a material having a high hardness and is located from the heel part to the arch part, and is located at the front. The thickness becomes thinner, and the front end of the second layer extends forward from the thumb side rather than the little finger side. The second layer is made of a material having a hardness lower than that of the first layer from the heel portion. It is located over the entire length up to the toe and is laminated on the first layer. In this configuration, the first layer formed of a high hardness material can suppress the depression of the sole of the foot from the heel to the arch of the foot, and the posture of the sole can be inclined forward. The insole that fits the sole shape of the shoe is molded. Further, since the front end of the first layer is obliquely cut so that the thumb side extends forward rather than the little finger side, the thumb side depression in the arch portion is suppressed, and the arch portion is suppressed. The posture of the soles around the foot is corrected more flatly, and the area around the arch of the insole is molded into a flatter shape from the thumb side to the little finger side.

According to a fourth aspect of the present invention, in the step for molding the insole for shoes according to any one of the first to third aspects, the pseudo foot mold is of a plurality of types according to the size of the user's foot. The size is set, and the plate-shaped member is formed of a material having higher hardness as the size of the pseudo foot mold increases. In this configuration,
Regardless of the user's physique, the posture of the sole of the foot during molding can be kept substantially constant, and an insole having an optimal shape can be molded.

[0012]

DETAILED DESCRIPTION OF THE INVENTION A step for molding an insole according to an embodiment of the present invention will be described below with reference to the drawings. FIG. 1 shows the external appearance of the main platform, and FIGS. 2A to 2D show the cross-sectional shape of the main platform. Also, FIG.
FIG. 3A shows an insole (for the right foot) before being molded by the main step, and FIG. 3B shows an insole molded by using the main step. The pedestal 1 is an arch support base for molding an insole that custom-molds the insole 20 according to a user's foot shape. Insole 2
0 is inserted as an insole inside the shoe to keep the body in the neutral position and reduce the loss of the force transmitted from the sole to the shoe. Insole 20 is EVA
It is configured by incorporating a resin having thermoplasticity such as (ethylene vinyl acetate) resin or pasting it on the back surface, and has a flat plate shape as shown in FIG. 3A before molding. This flat plate-shaped insole 20a is heated in an oven or the like to be softened, placed on the step pedestal 1 having the pseudo foot mold 8, and the user's foot is placed and pressed from above, as shown in FIG. 3 (b). The shaped insole 20 is molded.

The step 1 is composed of a plate member 2 in which a concave pseudo foot mold 8 based on a standard foot mold is formed from a heel part 5 contacting the user's heel to a toe part 7 contacting the user's toe. The length dimension and the width dimension are larger than the length dimension and the width dimension of the insole 20a before molding. The plate-shaped member 2 includes a first sponge layer 3 and a second sponge layer 4 made of materials having different hardnesses. The pseudo foot mold 8 is formed with an arch of optimum balance that makes the foot mold of the user close to a normal foot mold.

The first sponge layer 3 is made of a high hardness material and is located from the heel portion 5 to the arch portion 6.
The thickness of the first sponge layer 3 becomes thinner toward the front, and the front end portion 3a has a thumb side 10 rather than a little finger side 9.
Has a shape extending forward. The second sponge layer 4 has lower hardness and wear resistance than the first sponge layer 3,
It is made of a material that has excellent heat resistance and does not adhere to a resin, is located over the entire length of the plate-like member 2, and is laminated on the first sponge layer 3.

Furthermore, as shown in FIGS. 1 and 2 (c), the second sponge layer 4 extends from the arch part 6 contacting the user's arch to the toe part 7 on the thumb (thumb ball) side. 10 (inside) is thickly formed, and gradually becomes thin toward the little finger (pinky ball) side 9 (outside). When such a step 1 is placed on the ground, the step 1
On the upper surface of the, a slope having a downward slope is formed from the thumb side 10 to the little finger side 9.

When the user puts a foot on the step 1 and pressurizes it when the insole 20 is molded, a larger load is applied to the thumb side 10 and the amount of depression on the thumb side 10 increases.
Since the thumb step 10 and the little finger side 9 of the second sponge layer 4 are preliminarily formed in the main step 1 so as to be thin, the sole posture when the insole 20 is molded is corrected to be substantially flat. It As a result, the insole 20 having a flat and neutral shape can be molded from the arch part 6 to the toe part 7, and the insole 20 having such a shape facilitates the user to keep the neutral position of the body, and , The transmission loss of force is suppressed, and smooth and lean exercise is possible.

Further, in the pseudo foot mold 8 of the main step 1, the heel portion 5 is formed to be thick, and the arch portion 6 to the toe portion 7 is gradually formed to be thin. Thereby, the sole posture can be corrected to the forward lean, and the insole 20 that fits the sole shape of the shoe in the forward lean can be molded.

Further, since the first sponge layer 3 having high hardness is formed from the heel part 5 to the arch part 6, the depression of the sole around the heel part 5 at the time of molding is suppressed, and the sole of the foot is suppressed. Can be kept leaning forward. This makes it possible to mold an insole that fits the sole shape of the shoe in the forward leaning position. Further, since the front end portion 3a of the first sponge layer 3 is formed so that the thumb side 10 extends forward rather than the little finger side 9, the depression of the thumb side 10 around the arch portion 6 is prevented. Can be suppressed. As a result, the insole having a flatter shape can be molded from the side of the arch 6 to the side of the little finger 9 to the side of the thumb 10.

The present invention is not limited to the configuration of the above-described embodiment, and various modifications can be made. For example, the step 1 on which the pseudo foot mold 8 of several sizes is formed is prepared in advance and the It may be used properly according to the size of the foot (S, M, L). At this time, the pseudo foot mold 8 has an optimal arch balance for each size, and as the size increases, the first sponge layer 3 and the second sponge layer 4 are made of a material having a higher hardness. If formed, the posture of the sole of the foot at the time of molding can be kept substantially constant regardless of the physique of the user, and the insole 20 having the optimum shape can be molded. Also, at this time, only the first sponge layer 3 may be made of a material having a high hardness. By doing so, the hardness of the second sponge layer 4 can be easily changed to substantially the same level as the above. The effect of can be obtained.

Further, the material used for the plate-like member 2 is not limited to sponge, and a material having a restoring property such as jelly (Gel) -based material or rubber-based material may be applied. Further, the plate-shaped member 2 is not limited to the two-layer structure described above, and a structure having a plywood layer as a base on the bottom surface thereof,
The sponge layer 4 may have a structure in which a sponge layer having a lower hardness than the second sponge layer 4 is laminated. Moreover, you may make it form the lateral arch which the center part raised from the pseudo-foot type arch part to the toe part. By doing so, it is possible to mold an insole having a shape that makes it easier to maintain a neutral position. Furthermore, the insole 20 molded by the main step 1
Is suitable for use in ski boots and other sports shoes, but can also be applied to shoes in general.

[0021]

As described above, according to the invention of claim 1,
Since the plate-shaped member is formed thicker on the thumb side and gradually thinned toward the little finger side, the posture of the sole of the user at the time of insole molding can be corrected to be substantially flat from the thumb side to the little finger side. This makes it possible to mold an insole which has a substantially flat and neutral shape from the thumb side to the little finger side, which makes it easy to maintain the neutral position of the body, suppresses power transmission loss, and allows smooth movement.

According to the second aspect of the present invention, since the heel portion of the plate-shaped member is formed to be thick and the heel portion is formed to be gradually thin from the arch portion to the toe portion, the sole posture at the time of molding is set to the front. The insole can be corrected to be tilted, and an insole that fits the sole shape of the shoe in the forward tilted position can be molded.

According to the invention of claim 3, since the first layer having high hardness is formed from the heel part to the arch part,
It is possible to keep the sole posture at the time of molding in a forward leaning position, and to mold an insole that fits the sole shape of a shoe in a forward leaning position. Further, since the front end of the first layer is formed so that the thumb side extends forward rather than the little finger side, it is possible to suppress the sinking of the thumb side in the vicinity of the arch portion, and to prevent the arch of the arch. The area around the part has a flatter shape, making it easier to maintain the neutral position of the body,
In addition, it is possible to mold an insole that suppresses force transmission loss and can perform smooth motion.

Further, according to the invention of claim 4, since the pseudo foot mold is made of a material having higher hardness as the size increases, the posture of the sole of the foot during molding is maintained regardless of the physical constitution of the user. It can be kept substantially constant, and an insole having an optimum shape can be molded.

[Brief description of drawings]

FIG. 1 is a perspective view of a step according to an embodiment of the present invention.

FIG. 2 (a) is a cross section taken along the line A-A of the step pedestal, (b) is a cross section taken along the line BB of the step pedestal, (c) is a cross section taken along the line CC of the step pedestal, and (d).
FIG. 4 is a cross-sectional view showing a DD cross section of the step.

FIG. 3A is a perspective view showing a state before molding the shoe insole, and FIG. 3B is a perspective view showing the insole molded by the step.

FIG. 4A is a perspective view showing an insole molded by a conventional step, and FIG. 4B is a sectional view taken along line EE of the insole.

[Explanation of symbols]

1 step 2 plate-shaped members 3 First sponge layer 4 Second sponge layer 5 heels 6 Arch part 7 toes 8 pseudo foot type 9 Little finger side 10 thumb side 20 Insoles (after molding) 20a insoles (before molding)

Claims (4)

[Claims] 1. A concave pseudo foot mold based on a standard foot mold is formed from a heel portion contacting the heel of the user to a toe contacting the toe of the user, and the upper surface thereof has thermoplasticity. In a step for insole molding for shoes for molding an insole that fits the user's foot mold by placing the insole made of resin in a heated state and pressing the user's foot from above to deform the insole The plate-shaped member is thickly formed on the thumb side from the arch part in contact with the user's arch to the toe part,
A step for insole molding for shoes, which is characterized by being gradually thinned toward the little finger side. 2. The shoe according to claim 1, wherein the plate-shaped member is formed such that the heel portion is thick and the thickness is gradually reduced from the arch portion to the toe portion. Step for insole molding. 3. The plate-shaped member has a first layer and a second layer made of materials having different hardnesses, and the first layer is made of a material having high hardness from the heel portion to the arch. Is located over the portion, the wall thickness becomes thinner toward the front, and the front end portion extends forward on the thumb side rather than on the little finger side, and the second layer is The material having a hardness lower than that of the first layer is located over the entire length from the heel portion to the toe portion, and is laminated on the first layer. Step for molding insoles for shoes. 4. The pseudo foot mold has a plurality of sizes set according to the size of the user's foot, and the plate-shaped member is made of a material having a higher hardness as the size of the pseudo foot mold increases. The step for molding the insole for shoes according to claim 1, wherein the step is for forming.