WO2022173052A1

WO2022173052A1 - Shoe insole

Info

Publication number: WO2022173052A1
Application number: PCT/JP2022/005849
Authority: WO
Inventors: 健伊藤
Original assignee: ダイヤテックス株式会社
Priority date: 2021-02-15
Filing date: 2022-02-15
Publication date: 2022-08-18
Also published as: JPWO2022173052A1

Abstract

The present invention addresses the problem of providing a shoe insole that suitably conforms to and fits the sole of the wearer's foot during walking and running and that over a long period of time can effectively assist a rolling action, without the use of a foam resin. This problem is solved by a shoe insole (1) comprising a shoe insole main body (10) that uses a laminate body, which is obtained by layering a plurality of fabric-like bodies formed from linear bodies obtained by stretching thermoplastic resin and then uniting the fabric-like bodies by heating and compressing, and that has a portion formed so as to correspond to at least the arch of the foot and the shape of the sole of the foot in the vicinity thereof, said shoe insole (1) being characterized in that, at the part of the shoe insole main body (10) that contacts the arch of the foot and the sole of the foot in the vicinity thereof during wearing, a bulging region (125) is formed having a horseback shape in the vicinity of the center in the left-right direction in a frontal view indicated by the arrows.

Description

shoe insole

The present invention relates to a shoe insole made of a sheet-like laminated body obtained by heating and compressing a plurality of laminated cloth-like bodies and integrating them.

When walking or running, the foot performs a tilting motion that smoothly shifts the weight from the ground to the kick forward.

Specifically, the state where the heel touches the ground (HC: heel contact), the state where the entire sole touches the ground (FF: foot flat), and the state where the entire sole is in contact with the ground (MS: midstance) ), the state where the heel is lifted off the ground, the weight is applied to the forefoot (toe) (HO: Heel-off), and the state where the kicked-out toe is lifted off the ground are repeated in a flowing manner.

Since the shoe receives the load during the above-mentioned tilting motion on the sole or the like, the forefoot portion (toe portion) generally has flexibility so that it can be easily bent when the toes are bent. At the same time, it is necessary to have a certain degree of rigidity from the middle foot portion (arch portion) to the rear foot portion (heel portion) so that the sole can be supported.

Conventionally, as an insole for a shoe that is placed in a shoe and is in direct contact with the sole of the wearer's foot, Patent Document 1 discloses that the rear foot part and the middle foot part are made of synthetic resin foam molded at high density. , The forefoot part is made of a low-density molded synthetic resin foam, and the peripheral edge of the part where the rear foot part and the middle foot part are combined is raised so as to form an inclined embankment surface. , an insole for shoes having a high holding property of the foot and a high cushioning property in the forefoot portion by forming the middle foot portion into a flat plate shape.

In addition, Patent Document 2 describes a flexible part made of soft foamed resin over the entire foot contact surface and a hard foamed part below the flexible part, in order to properly fit the wearer's foot and achieve stability when walking or running. The insole for shoes has a reinforcing part made of resin, the reinforcing part exists from the rear foot part to the middle foot part, and the part between the rear foot part and the middle foot part is composed of only the flexible part. .

JP 2005-237625 A Japanese Patent Application Laid-Open No. 2003-38207

In

Patent Documents

1 and 2, the shoe insole is formed in a shape that fits the wearer's foot, and the forefoot portion is formed of a flexible foamed resin, and the hard foamed resin is formed from the middle foot portion to the rearfoot portion. Since the shoe is made of the elastic restoring force of the foamed resin, it follows and fits the sole of the wearer's foot, and the effect of well supporting the foot in the shoe during the above-described tilting motion can be obtained.

However, when the wearer's load is repeatedly applied to the insole for shoes over a long period of time, the elastic restoring force of the foamed resin gradually decreases, causing fatigue. As a result, the effect of fitting the shoe to the sole of the wearer's foot is lost, and there is a problem that the foot inside the shoe cannot be well supported during swinging motion.

That is, for example, the middle foot part of the insole for shoes is pushed by the arch of the foot during walking or running, and is appropriately elastically deformed. It follows the sole of the foot to push up the arch of the foot and fits.

However, due to the deterioration of the elastic restoring force of the foamed resin due to long-term use, the function to follow and fit the arch of the foot is reduced, and the function to effectively support the sole and assist the tilting movement is greatly impaired. put away.

Therefore, the present invention provides an insole for shoes that can appropriately follow and fit the sole of the wearer's foot when walking or running without using foamed resin, and can effectively assist the swinging motion over a long period of time. The challenge is to

Other problems of the present invention will become clear from the following description.

The above problems are solved by the following inventions.
(Claim 1)
A laminate obtained by laminating a plurality of cloth-like bodies formed using filaments obtained by stretching a thermoplastic resin, heating and compressing them, and integrating them, at least at the arch of the foot and its vicinity. A shoe insole having a shoe insole body (10) having a portion formed to correspond to the shape of the sole,
The shoe insole body (10), which is in contact with the arch of the foot and the sole in the vicinity thereof when worn, is characterized in that a horseback-shaped swollen region (125) is formed in the vicinity of the center in the left-right direction as viewed from the front arrow. Insoles for shoes to be.
(Claim 2)
The shoe insole body (10), which is in contact with the arch and the sole in the vicinity thereof when worn, is formed with an arch-shaped protruding region (126) as viewed from the side. 2. The insole for shoes according to claim 1, wherein a horseback-shaped bulging region (125) is formed in the vicinity of the center in the left-right direction when viewed from the front.
(Claim 3)
3. The shoe according to claim 1 or 2, wherein the shoe insole body (10) has a part formed to correspond to the sole shape of a part or all of the midfoot part (12). insole.
(Claim 4)
The shoe insole body (10) has a portion formed to correspond to the sole shape of a part or all of the rear foot portion (11) and the middle foot portion (12). 3. The shoe insole according to

item

1 or 2.
(Claim 5)
The shoe insole body (10) has a part formed to correspond to the sole shape of a part or all of the forefoot part (13) and the middle foot part (12). 3. The shoe insole according to 1 or 2.
(Claim 6)
The shoe insole body (10) has a portion formed to correspond to the sole shape of part or all of the rear foot portion (11), middle foot portion (12) and forefoot portion (13). The insole for shoes according to

claim

1 or 2, characterized in that:
(Claim 7)
A concave portion (110) for mounting a heel portion is formed on the surface of the shoe insole body (10) in contact with the sole of the rear foot portion (11),
The recess (110) is surrounded by a rear raised portion (111), one side raised portion (122), the other side raised portion (123) and a front flat portion (124). 7. The shoe insole according to 6 above.
(Claim 8)
The one-side upright portion (122) extends to the vicinity of the horseback-shaped swollen region (125) of the front flat portion (124),
The insole for shoes according to claim 7, characterized in that said other side rising portion (123) extends to the vicinity of the starting point of said front flat portion (124).
(Claim 9)
A filamentous body obtained by stretching a thermoplastic resin includes a low melting point resin component having a melting point equal to or lower than the heating temperature and a high melting point resin component having a melting point higher than the heating temperature. The shoe insole according to any one of claims 1 to 8.
(Claim 10)
10. The insole for shoes according to claim 9, wherein said cloth-like body is formed by weaving or knitting said filamentous body.
(Claim 11)
11. The insole for shoes according to claim 9 or 10, wherein a plurality of said cloth-like bodies are laminated with an adhesive film made of said thermoplastic resin of the same kind as that of said filamentary bodies interposed therebetween.
(Claim 12)
The insole for shoes according to any one of claims 9 to 11, wherein the thermoplastic resin is an olefin polymer.
(Claim 13)
By heating and compressing the plurality of laminated cloth-like bodies, the low-melting-point resin component of the filaments melts, and part or all of the adhesive film melts to become an adhesive component. , the high melting point resin component of the filament is not melted, but becomes reinforcing fibers to form an integrated sheet-like laminate,
The shoe insole according to any one of claims 9 to 12, wherein the insole is formed by the integrated sheet-like laminate.

According to the present invention, there is provided an insole for a shoe that fits properly following the sole of the wearer's foot during walking or running without using foamed resin, and that can effectively assist the swing movement over a long period of time. be able to.
Further, according to the present invention, it is possible to provide an insole for a shoe that can support walking and running with a push-up force from the sole of the foot each time one walks.
Further, according to the present invention, it is possible to provide a shoe insole in which the repulsive force from flexing can support the windlass mechanism.

In addition, according to the present invention, when the insole is worn, it follows the load and movement by supporting the horseback-shaped bulging portion and the arch-shaped protruding portion formed on the surface of the insole body located on the side in contact with the sole near the arch of the foot. In addition, it is possible to provide an insole for shoes that is excellent in fit to the sole.
Furthermore, according to the present invention, it is possible to provide a shoe insole that can reduce the feeling of fatigue on the sole of the foot by uniformly distributing the sole pressure.

FIG. 1 is a perspective view showing an example of an insole for a shoe comprising a forefoot portion, a middle foot portion and a rearfoot portion according to the present invention; A side view showing an arrow view from the direction of (II) in FIG. Cross-sectional view along line (III)-(III) in Fig. 1 Cross-sectional view along line (IV)-(IV) in Fig. 1 The top view which shows the insole for shoes which made the forefoot part of the insole for shoes shown in FIG. 1 missing. FIG. 2 is a plan view showing the insole for shoes with the rear foot part of the insole for shoes shown in FIG. 1 missing; The top view which shows the insole for shoes which made the forefoot part and rearfoot part of the insole for shoes shown in FIG. 1 lost. FIG. 2 is a plan view showing an example in which the insole for shoes shown in FIG. 1 is provided with ribs, (A) is a plan view showing an example in which ribs are provided in the middle foot portion, and (B) is a plan view showing an example in which ribs are provided in the middle foot portion; (C) is a plan view showing another example in which ribs are provided in the forefoot FIG. 2 is a plan view showing an example in which a notch penetrating the forefoot portion of the shoe insole shown in FIG. 1 is provided; FIG. 2 is a plan view showing an example in which the shoe insole shown in FIG. 1 is provided with a plurality of holes;

The shoe insole of the present invention is a laminate obtained by laminating a plurality of cloth-like bodies formed using filaments obtained by stretching a thermoplastic resin, heating and compressing them, and integrating them. The shoe insole comprises a shoe insole body having a portion formed to correspond to the shape of at least the arch of the foot and the sole of the foot in the vicinity thereof.
The shoe insole body of the present invention may have at least a portion formed to correspond to the shape of the arch and the sole of the foot in the vicinity thereof.
Here, it means that at least the arch and its vicinity are positioned in a sole shape corresponding to part or all of the middle foot.
Therefore, it is preferable that the shoe insole main body has a part formed so as to correspond to the sole shape of part or all of the middle foot portion.

The sole of the foot consists of a forefoot portion, a middle foot portion, and a rear foot portion. may be of a size corresponding to all of

Further, the shoe insole body preferably has a portion formed to correspond to the sole shape of part or all of the rearfoot portion and the middlefoot portion. It is also preferable to have a portion formed to correspond to the shape of the entire sole, or a portion formed to correspond to the shape of the sole of part or all of the rear foot, middle foot and forefoot. The aspect which has is also preferable.

Preferred embodiments of the present invention will be described below based on the drawings.

FIG. 1 is a perspective view showing an example of a shoe insole comprising a forefoot portion, a middle foot portion and a rearfoot portion according to the present invention, and FIG. 2 is a side view showing an arrow view from the direction of (II) in FIG. 3 is a cross-sectional view along line (III)-(III) in FIG. 1, and FIG. 4 is a cross-sectional view along line (IV)-(IV) in FIG.

In the figure, 1 is a shoe insole for the right foot, and 10 is a main body of the shoe insole.
The shoe insole body 10 is composed of a rear foot portion 11 , a middle foot portion 12 and a forefoot portion 13 .

A concave portion 110 for mounting the heel portion is formed on the surface of the sole of the rear foot portion 11 and the middle foot portion 12 with which the heel portion contacts. The concave portion 110 is surrounded by a rear raised portion 111 , a right raised portion 122 that is one side raised portion, a left raised portion 123 that is the other side raised portion, and a front flat portion 124 .

In the present invention, the one-side raised portion 122 preferably extends to the vicinity of the horseback-shaped bulging region 125 of the front flat portion 124, as shown in FIGS. In the present invention, the other side upright portion 123 preferably extends to the vicinity of the horseback-shaped bulging region 125 of the front flat portion 124, as shown in FIGS.

Therefore, in the example of FIG. 1, the length of the other side rising portion 123 is longer than the length of the one side rising portion 122 from the heel side toward the toe side in the longitudinal direction ( See the two-dot chain line in Fig. 1). The one-side rising portion 122 may be formed to have the same length as the other-side rising portion 123 in the longitudinal direction without being limited to the illustrated example.

In this embodiment, the one side rising portion 122 is formed corresponding to the outer longitudinal arch of the foot, and the other side rising portion 123 is formed corresponding to the inner longitudinal arch of the arch. The lateral longitudinal arch of the arch of the foot is relatively gentle compared to the medial longitudinal arch. For this reason, the one side upright portion 122 corresponding to the outer longitudinal arch of the foot is formed to have a lower upward height than the other side upright portion 123 corresponding to the inner longitudinal arch of the foot. With these formations, the lateral portion of the sole of the foot is fitted, so that the tilting motion of walking can be supported.

FIG. 3 shows a schematic cross-sectional shape of the shoe insole main body 10 cut along the center in the longitudinal direction. Specifically, it has a cross-sectional shape as shown in the drawing from the concave portion 110 toward the forefoot portion 13 via the front flat portion 124 .

A portion of the recessed portion 110 shown on the left side is located in the rear foot portion 11 , and the remaining portion of the recessed portion 110 and the front flat portion 124 are located in the middle foot portion 12 .

The surface of the shoe insole main body 10, which is located on the side that comes into contact with the arch and the sole of the foot in the vicinity thereof when worn, has a horseback-shaped swollen area 125 near the center in the left-right direction as viewed from the front arrow. The surface of the shoe insole main body 10 is formed with a horseback-shaped swollen region 125 so that it can follow the load and movement and provide a feeling of fit to the sole.

The bulging region 125 is preferably formed in the rear part of the middle foot portion 12, as shown in FIG. Further, the horseback-shaped bulging region 125 is preferably formed in the vicinity of the starting point of the front flat portion 124 .

The shoe insole body 10 of the present invention is formed in an arch shape projecting upward at the midfoot portion 12 . A bulging region 125 is formed in this arch-shaped portion, and its shape is not particularly limited as long as it has a horseback shape, and may be a truncated cone shape or a hemispherical shape when viewed from above.

In the present invention, as shown in FIG. 4, arch-shaped protruding regions 126 are formed in the side arrow view.

In the present invention, as shown in FIG. 1, the surface of the shoe insole main body 10, which is located on the side that contacts the sole near the toe side of the arch when worn, has a horseback-like shape near the center in the left-right direction as viewed from the front arrow. A bulging region 125 is formed, and an arch-shaped projecting region 126 is formed in the longitudinal direction of the side arrow.

As described above, the shoe insole main body 10 is formed with the projecting region 126 and the bulging region 125, so that the insole comes into direct or indirect contact with the sole near the arch of the metatarsal portion 12.

According to one aspect of the shoe insole 1, a forefoot portion (toe portion) 13, a middle foot portion (arch portion) 12, and a rearfoot portion (heel portion) are formed by a sheet-like laminate having a size that matches the shape of the foot. 11 are integrally formed.
Note that the shoe insole 1 in this embodiment is for the right foot. The shoe insole for the left foot is bilaterally symmetrical to that for the right foot.

The shoe insole 1 is formed by heating and compressing a sheet-like laminate into a shape having a continuous curved surface due to the existence of the front flat portion (124) so as to correspond to the shape of the sole. .

Specifically, the forefoot portion 13 of the shoe insole 1 is formed in a substantially flat plate shape, and the middle foot portion 12 to the rearfoot portion 11 have a continuous curved surface corresponding to the shape of the sole. It is formed by heating and compressing to

As shown in FIG. 3, in the middle foot portion 12, corresponding to the arch shape of the sole, from the front foot portion 13 side toward the middle foot portion 12 side and from the rear foot portion 11 side to the middle foot portion 12 By gently sloping upward toward the side, the laminate is formed into a curved arch shape that protrudes upward. It is formed by heating and compressing.

The forefoot portion 13 beyond the bulging region 125 slopes downward because the laminated body is formed in a curved arch shape so as to protrude upward.
Then, when the shoe insole 1 of the present invention is worn on a shoe, the forefoot portion 13 is provided such that a portion of the downwardly sloping portion is curved in the opposite direction. In other words, a part of it is curved. Thus, when the insole 1 for shoes of the present invention is worn, the insole 1 for shoes can incorporate a repulsive force to the shoe. As a result, the assistance of the Windlass mechanism when the wearer is walking can be facilitated.

As described above, apart from the bulging region 125, the arch-shaped protruding region 126 is formed in the lateral arrow view, so as shown in FIG. In this case, the inner side of the foot in the width direction is the highest, and is formed so as to slope gently downward toward the outer side. Such forms are formed by heating and compressing the laminate.

The shoe insole body 10 is formed with a horseback-shaped bulging region 125 and an arch-shaped protruding region 126, so that the wearer's soles, especially from the arch to the heel, have a better fit. In addition, by supporting the wearer's foot from the arch to the heel so as to wrap it from the side, unnecessary movement of the foot in the shoe during walking or running is suppressed and the movement of the foot. can be stabilized.

Furthermore, the overlapping portion of the bulging region 125 and the protruding region 126 exerts a pumping effect of the insole during walking, and can improve cushioning properties. Since a laminate is used in which a plurality of cloth-like bodies formed using filamentous bodies obtained by stretching are laminated and then heated and compressed to be integrated, the return elasticity is increased, and walking is improved. Able to assist movement.

In addition, the upper surface of the shoe insole main body 10, that is, the surface in contact with the sole of the wearer's foot, may be entirely covered with a cushion layer. This makes it possible to further improve the cushioning property. The cushion layer is made of elastic material such as foamed urethane resin, foamed EVA (ethylene-vinyl acetate copolymer resin), foamed polyethylene resin, or the like, but is not particularly limited. For example, suede or artificial leather may be used. Further, for example, it may be formed of a plurality of layers in which suede or the like is laminated on foamed urethane resin. As a result, when the shoe insole body 10 is in contact with the sole of the wearer, the insole body 10 for shoes can be provided with an excellent sense of use by alleviating the feeling of hardness given to the sole.

The horseback-shaped bulging region 125 and the arch-shaped protruding region 126 of the shoe insole body 10 heat and compress the sheet-like laminate to form a continuous curved surface at the same time or over time. It may be molded in a staggered fashion.

In addition, the laminate cut to a predetermined size according to the shape of the wearer's individual foot is heated and compressed to form a horseback-shaped swollen region 125 and an arch-shaped projecting region 126 according to the shape of the sole of the wearer's foot. It can also be molded.

(Laminate)
Next, the laminate used in the present invention will be explained.
The laminate is formed by forming a sheet-like cloth-like body from filaments obtained by stretching a thermoplastic resin (cloth-like body forming step), and then laminating a plurality of the obtained cloth-like bodies (lamination step), then heating and compressing (heating and compressing step), and further cooling and compressing (cooling and compressing step).
Heating and compression are preferably carried out so that a portion of the filament melts.

Such a laminate is called a self-reinforced polymer composite material (Self Reinforced Plastics: SRP), and is a fiber reinforced plastic (FRP) in which the adhesive component and the reinforcing fiber are formed from the same resin component. . A resin component of the same type refers to a resin composed of components of the same type, such as polyolefin, polyamide, and polyester.

As the thermoplastic resin that constitutes the filaments, a resin with a large stretching effect, generally a crystalline resin, is used. Specifically, olefin polymers such as high-density polyethylene, high-pressure low-density polyethylene, polypropylene, and ethylene/propylene block copolymers, polyesters such as polyethylene terephthalate and polybutylene terephthalate, polyamides such as nylon 6 and nylon 66, and the like. can be used. Among them, olefin polymers such as high-density polyethylene, high-pressure low-density polyethylene, and polypropylene are preferred because of workability, economy, and low specific gravity.

Any filamentary body can be used as long as it can form a cloth-like body. For example, tapes, yarns, split yarns, monofilaments, multifilaments, etc. can be used. These filaments are twisted as necessary, but flat filaments such as tapes and yarns are preferred, and flat yarns, which are tape-shaped filaments, are particularly preferred.

Various additives suitable for use in shoes can be added to the striatum, including, for example, metal ion-based inorganic antibacterial agents and organic antibacterial agents.

Also, the striatum preferably contains a low melting point resin component and a high melting point resin component. When heated, the low melting point resin component melts and the high melting point resin component does not melt, so that the low melting point resin component melts and becomes an adhesive component, and the high melting point resin component melts. It becomes a reinforcing fiber without

A cloth-like body is a sheet-like body formed using filaments. The cloth-like body includes a woven cloth woven using filaments as warp and weft.

In addition, a large number of filaments are arranged side by side in one direction, and a large number of filamentary bodies are arranged side by side so as to cross each other in an arbitrary angle direction, and an adhesive such as a hot-melt agent is applied to the intersections. It can also be a cross-bonded fabric (soft) joined by heat bonding. Also, a multiaxial fiber base material in which a large number of filamentary bodies are arranged side by side in one direction, and a large number of filamentary bodies are arranged side by side so as to intersect in an arbitrary angle direction thereon, and are connected by stitching yarn. You can also Furthermore, the cloth-like body may be a knitted fabric.

The number of layers of the cloth-like body is not particularly limited as long as it is plural. The thickness of the laminate obtained by heating and compressing a plurality of cloth-like bodies to integrate them can be about 1 mm to 3 mm.

A specific manufacturing method for stacking a plurality of cloth-like bodies and integrating them by heating and compressing is not particularly limited. can be used.
It is also preferable to interpose an adhesive film made of a thermoplastic resin between the cloth-like bodies for adhesion of the cloth-like bodies. When the thermoplastic resin filaments contain a low melting point resin component and a high melting point resin component, the adhesive component includes the low melting point resin component of the filaments and the adhesive film. Since the adhesive component can be increased, the adhesive strength can be increased.

A laminated body formed by heating and compressing a plurality of cloth-like bodies is formed so that the forefoot part 13, the middle foot part 12 and the rear foot part 11 are integrated according to the desired size and shape. be cut.

After cutting, by heating and compressing, as described above, the arch shape including the horseback-shaped bulging region 125 and the arch-shaped projecting region 126 is formed into a continuous curved surface.

Further, after forming the laminate, the laminate is press-molded with a mold having a shape corresponding to a plurality of sole shapes to form a plurality of shoe insoles so that each shoe insole is unnecessary. It may be formed by cutting the region, or after cutting the laminate into a size corresponding to one shoe insole, pressing with a mold having a shape corresponding to one sole shape, After that, the unnecessary area may be cut and formed.

After that, the insole 1 for shoes may be made by laminating a cushion layer on the upper surface of the laminate obtained, if necessary. Alternatively, the cushion layer may be adhered to the upper surface of the laminate and cut, and then the horseback-shaped bulging region 125 and the arch-shaped projecting region 126 may be molded by heating and compressing.
Furthermore, the integration of a plurality of cloth-like bodies and the formation of a continuous curved surface may be simultaneously formed by heating and compressing once.

(Effect of the invention)
According to the present invention, there is provided an insole for a shoe that fits properly following the sole of the wearer's foot during walking or running without using foamed resin, and that can effectively assist the swing movement over a long period of time. be able to.
Further, according to the present invention, it is possible to provide an insole for a shoe that can support walking and running with a push-up force from the sole of the foot each time one walks.
Furthermore, according to the present invention, it is possible to provide an insole for shoes in which the repulsive force from bending can assist the windlass mechanism.

More specifically, the shoe insole 1 has a continuous curved surface corresponding to the shape of the sole of the foot, a horseback-shaped bulging region 125 formed on the curved surface, and an arch-shaped projecting region 126, which can be used when walking or running. Sometimes it fits properly following the soles of the wearer's feet.

That is, the laminate is obtained by laminating a plurality of cloth-like bodies formed using filaments obtained by stretching a thermoplastic resin, heating and compressing them, and integrating them. Although it has elasticity, it has high rigidity.

Even if the shoe insole 1 is used for a long period of time and the load of the wearer's foot is repeatedly applied, the presence of the horseback-shaped swollen region 125 and the arch-shaped protruding region 126 prevents the insole from becoming saggy. can maintain the initial shape.

Therefore, the effect of following the soles of the wearer's feet for a long period of time can be exhibited, and the tilting motions during walking and running can be favorably supported for a long period of time.

Moreover, the laminated body not only has excellent rigidity, but also has the effect of quickly returning to its original state when deformed (high return elasticity). Therefore, according to this shoe insole 1, the following remarkable effects can also be obtained.

At the time of landing, the horseback-shaped bulging region 125 and the arch-shaped projecting region 126 of the middle foot portion 12 are formed so as to fit the arch of the wearer's foot. During walking, the portion where the horseback-shaped bulging region 125 and the arch-shaped projecting region 126 of the middle foot 12 overlap is in a state where a small space is created with respect to the sole. By pressing this part, a cushioning effect is produced by the space, and even if the insole 1 for shoes is deformed, it quickly returns to its original state due to the high return elasticity of the laminate, and the arch of the wearer is lowered. acts to push up from

For this reason, it is possible to exert a so-called pump action on the soles of the wearer's feet each time they walk or run. This pumping action works to naturally promote blood circulation in the wearer's feet by appropriately pressing and stimulating the arch of the foot with the horseback-shaped bulging region 125 and the arch-shaped projecting region 126 .

Of course, the horseback-shaped bulging region 125 and the arch-shaped protruding region 126 maintain their initial shape over a long period of time due to the rigidity of the laminated body, so that such a pumping action is exhibited over a long period of time.

In the present invention, as shown in FIG. 2, one side raised portion 122 and the other side raised portion 123 extending to the vicinity of the horseback-shaped bulging region 125 of the front planar portion 124 are provided, thereby providing a high return of the laminate. exhibit elasticity.

Therefore, even if the one-side rising portion 122 and the other-side rising portion 123 are deformed outward due to the heel being tilted inside the shoe during walking or running, high return elasticity is exhibited to return the tilted heel to its original state. can be quickly returned to
Therefore, the stability of the wearer's foot can be further enhanced.

Furthermore, the shoe insole 1 using the sheet-like laminate has good flexibility and has such high return elasticity, so that it assists the windlass mechanism of the foot in stepping motion. , can produce stronger propulsion.

The windlass mechanism is the plantar fascia (plantar fascia) formed from the toes to the heel along with the dorsiflexion of the toes when performing a stepping motion so that the toes dorsiflex. As a result, the arch of the foot, which is formed from the base of the toes to the heel, bends greatly from the normal state and works to lift the foot.

The lifted arch exerts a force to return to its original state, and when the toes extend and return to the original state, they kick the ground strongly and act as a driving force for the foot to move forward.
It is said that this windlass mechanism is weakened when wearing shoes with a fixed instep as compared to when barefoot.

　Conventional shoe insoles have a forefoot made of flexible foamed resin so that when the toes are dorsiflexed at the time of stepping, they can flexibly follow the foot. Therefore, the return when returning to the original flat state is slow (low return elasticity). As a result, conventional insoles for shoes cannot assist the windlass mechanism of the foot, and cannot exert a sufficient kicking force when the toes return from a dorsiflexed state.

On the other hand, the shoe insole 1 according to the present invention, when the toe is dorsiflexed and stepped out, is flexible and bendable in the same way as the conventional shoe insole, but it does not bend from the bent state. High return elasticity. For this reason, the high return elasticity of the shoe insole 1 assists the force of the dorsiflexed toes extending to their original state in order to restore the arch lifted by the windlass mechanism. This allows the toes to quickly and strongly return to their original state. As a result, it is possible to exert a strong kicking force and produce a strong driving force.

In addition, since the laminate is composed only of thermoplastic resin, it has a low specific gravity and is lightweight, has high mechanical strength, does not easily crack or break, and has high durability such as excellent repeated bending. . Therefore, the insole can be made thinner than a general insole for shoes made of foamed resin. As a result, the insole for shoes is formed only from a thermoplastic resin with a lighter specific gravity than the insole for shoes made of general foamed resin and uses a laminated body that can be formed thinly, so it can be attached to the shoe. In addition, since the shoe is made thin, the change in volume inside the shoe is small, and the feeling of pressure on the foot can be prevented.

Furthermore, since the laminate made of thermoplastic resin can be easily deformed by heating with a dryer, etc., it can be easily deformed to match the shape of the sole of each wearer. As a result, the insole 1 for shoes can be made with a sense of being made to order, and the feeling of fitting and the feeling of use can be further improved.

(Another aspect of the present invention)
Next, another example of the shoe insole according to the present invention will be described with reference to FIGS. 5, 6 and 7. FIG.

5 is a plan view showing the insole for shoes with the forefoot part of the insole for shoes shown in FIG. 1 removed, and FIG. 6 is the insole for shoes shown in FIG. 1 with the rearfoot part removed. FIG. 7 is a plan view showing the insole for shoes, and FIG. 7 is a plan view showing the insole for shoes with the forefoot portion and the rearfoot portion of the insole for shoes shown in FIG. 1 removed.
In FIGS. 5, 6, and 7, parts with the same reference numerals as those in FIGS. 1 to 4 have the same configurations, and therefore descriptions thereof are omitted.

An important configuration in these embodiments is that, as in FIGS. It is also preferable that the horseback-shaped bulging region 125 and the arch-shaped projecting region 126 are formed according to the shape of the sole of the wearer's foot.

In the embodiment shown in FIG. 5, since the portion of symbol C is missing, weight reduction can be achieved while realizing the effects of the present invention.
In the embodiment shown in FIG. 6, since the portion of symbol D is missing, weight reduction can be achieved while realizing the effects of the present invention.
In the embodiment shown in FIG. 7, since the parts C and D are missing, it is possible to realize the effects of the present invention while reducing the weight.

Next, the shoe insole of the present invention may be in the form shown in FIG.
FIG. 8A is a plan view showing an example in which ribs are provided on the midfoot portion of the shoe insole shown in FIG. are arranged side by side in the longitudinal direction in the region of the midfoot portion 12 of the foot. The number of ribs is not limited to two. The parallel arrangement method is not particularly limited either.

FIG. 8B is a plan view showing another example in which ribs are provided on the midfoot portion of the shoe insole shown in FIG. They are provided crosswise at the center of the region of the midfoot portion 12 of the body 10 . The number of ribs is not limited to two. The method of installation is also not particularly limited.

In the embodiment shown in FIGS. 8(A) and 8(B), the ribs are provided in the midfoot portion 12 of the shoe insole main body 10, so that the shoe insole shown in FIG. Without limitation, ribs may be provided in insoles for shoes lacking either or both of the forefoot portion and the rearfoot portion as shown in FIGS. 5A, 6 and 7 .

FIG. 8C is a plan view showing an example in which ribs are provided in the forefoot portion of the shoe insole shown in FIG. Three ribs 130 are arranged side by side. The number of ribs 130 is not limited to three. The parallel arrangement method is not particularly limited either. It is preferable that the rib 130 shown in FIG. 8(C) is provided at the bent portion of the MP joint of the human foot.

The ribs 130 of the present embodiment can improve flexibility and durability, and the insole for shoes provided with the ribs of the present invention can obtain the high return elasticity characteristic of the laminate itself. , can provide better support for walking.
Moreover, since the rib 130 shown in FIG. 8(C) is provided along the width direction of the shoe insole formed of the laminate at the bent portion above the MP joint of the human foot, the rib 130 shown in FIG. Flexibility can be improved in the opposing longitudinal direction, and durability can be improved in the direction along the width direction.

By providing ribs as shown in Fig. 8, the necessary reinforcement of the shoe insole can be easily achieved.

Further, the insole for shoes of the present invention may be in the mode shown in FIG.
FIG. 9 is a plan view showing an example in which a cut penetrating through the shoe insole shown in FIG. 1 is provided.

A penetrating cut 131 is provided in the forefoot portion 13 of the shoe insole main body 10 . The incisions 131 can be formed by a method such as punching, and preferably have a plurality of triangular or square incisions as shown in the figure. By making such cuts, flexibility can be easily imparted to the highly rigid laminate.

In this embodiment, the cut 131 is preferably provided in the bent portion of the human foot above the MP joint. By providing a cut in the shoe insole formed of the laminate, the bending part can be easily bent, and the high return elasticity of the laminate itself is combined to further improve walking support. can be made

Moreover, the insole for shoes of the present invention may be in the form shown in FIG.
10 is a plan view showing an example in which a plurality of holes are provided in the shoe insole shown in FIG. 1. FIG.
It is preferable that the plurality of holes 129 are provided in the one-side raised portion 122 and the other-side raised portion, as shown in FIG. 10, for example. A perforated portion composed of a plurality of holes 129 circulates air by a pumping effect to prevent stuffiness in the shoe.

1: Shoe Insole 10: Shoe Insole Body 11: Hindfoot Part 12: Middlefoot Part 13: Forefoot Part 110: Recess 111: Rear Rise 122: One Side Rise (Right Rise)
123: other side riser (left riser)
124: Front plane portion 125: Bulging region 126: Protruding region 127: Rib 129: Plural holes 130: Notch

Claims

A laminate obtained by laminating a plurality of cloth-like bodies formed using filaments obtained by stretching a thermoplastic resin, heating and compressing them, and integrating them, at least at the arch of the foot and its vicinity. A shoe insole having a shoe insole body (10) having a portion formed to correspond to the shape of the sole,
The shoe insole body (10), which is in contact with the arch of the foot and the sole in the vicinity thereof when worn, is characterized in that a horseback-shaped swollen region (125) is formed in the vicinity of the center in the left-right direction as viewed from the front arrow. Insoles for shoes to be.
The shoe insole body (10), which is in contact with the arch and the sole in the vicinity thereof when worn, is formed with an arch-shaped protruding region (126) as viewed from the side. 2. The insole for shoes according to claim 1, wherein a horseback-shaped bulging region (125) is formed in the vicinity of the center in the left-right direction when viewed from the front.
3. The shoe according to claim 1 or 2, wherein the shoe insole body (10) has a part formed to correspond to the sole shape of a part or all of the midfoot part (12). insole.
The shoe insole body (10) has a portion formed to correspond to the sole shape of a part or all of the rear foot portion (11) and the middle foot portion (12). 3. The shoe insole according to item 1 or 2.
The shoe insole body (10) has a part formed to correspond to the sole shape of a part or all of the forefoot part (13) and the middle foot part (12). 3. The shoe insole according to 1 or 2.
The shoe insole body (10) has a portion formed to correspond to the sole shape of part or all of the rear foot portion (11), middle foot portion (12) and forefoot portion (13). The insole for shoes according to claim 1 or 2, characterized in that:
A concave portion (110) for mounting a heel portion is formed on the surface of the shoe insole body (10) in contact with the sole of the rear foot portion (11),
The recess (110) is surrounded by a rear raised portion (111), one side raised portion (122), the other side raised portion (123) and a front flat portion (124). 7. The shoe insole according to 6 above.
The one-side upright portion (122) extends to the vicinity of the horseback-shaped swollen region (125) of the front flat portion (124),
The insole for shoes according to claim 7, characterized in that said other side rising portion (123) extends to the vicinity of the starting point of said front flat portion (124).
A filamentous body obtained by stretching a thermoplastic resin includes a low melting point resin component having a melting point equal to or lower than the heating temperature and a high melting point resin component having a melting point higher than the heating temperature. The shoe insole according to any one of claims 1 to 8.
The insole for shoes according to claim 9, wherein the cloth-like body is formed by weaving or knitting the filamentous body.
An insole for shoes according to claim 9 or 10, characterized in that a plurality of said cloth-like bodies are laminated with an adhesive film made of said thermoplastic resin of the same kind as said filamentary bodies interposed therebetween.　
The insole for shoes according to any one of claims 9 to 11, wherein the thermoplastic resin is an olefin polymer.　
By heating and compressing the plurality of laminated cloth-like bodies, the low-melting-point resin component of the filaments melts, and part or all of the adhesive film melts to become an adhesive component. , the high melting point resin component of the filament is not melted, but becomes reinforcing fibers to form an integrated sheet-like laminate,
The shoe insole according to any one of claims 9 to 12, wherein the insole is formed by the integrated sheet-like laminate.