WO2021192328A1

WO2021192328A1 - Insole

Info

Publication number: WO2021192328A1
Application number: PCT/JP2020/022525
Authority: WO
Inventors: 吉夫大平; 晋作辻
Original assignee: 吉夫大平
Priority date: 2020-03-23
Filing date: 2020-06-08
Publication date: 2021-09-30
Also published as: JPWO2021192328A1

Abstract

An insole 10 comprises a medial part 20 for supporting a medial longitudinal arch of a foot, a lateral part 30 for supporting a lateral longitudinal arch of the foot, and a connecting part 40 for connecting the medial part 20 with the lateral part 30 and supporting a heel. The insole 10 comprises an opening 50 between the medial part 20 and the lateral part 30, and at least one of a medial inclined surface 21 and a lateral inclined surface 31, the medial inclined surface 21 being provided on the medial part 20 and configured to guide a rotated subtalar joint to an intermediate position, the lateral inclined surface 31 being provided on the lateral part 30 and configured to guide a transverse tarsal joint to an intermediate position.

Description

insole

The present invention relates to an insole.

The insoles that are attached to shoes are known. For example, Patent Document 1 discloses, as an example of an insole, a support for footwear containing a plurality of particles that can move independently. This footwear support allows the user's foot to fit the shoe more easily because the particles move according to the shape of the user's foot.

Japanese Unexamined Patent Publication No. 2015-513354

By the way, depending on the user, the angle of the subtalar joint may deviate from the normal angle. For example, a user whose subtalar joint is excessively supination, that is, a user who is a supination foot, cannot maximize the function of the foot because a large load is applied to the lower limbs. Similarly, depending on the user, the angle of the transverse tarsal joint may deviate from the normal angle. Even in such a case, the user cannot maximize the function of the foot because the load on the lower limbs is large. The footwear support mentioned above does not take this into consideration, so there is still room for improvement.

An object of the present invention is to provide an insole that can reduce the load applied to the lower limbs.

(1) The insole according to the present invention is a connecting portion that connects the medial portion that supports the medial longitudinal arch of the foot, the lateral portion that supports the lateral longitudinal arch of the foot, the medial portion and the lateral portion, and supports the heel. An insole comprising the It comprises a medial sloping surface to be formed and at least one of the lateral sloping surfaces provided on the lateral portion and configured to guide the transverse tarsal joint to an intermediate position.

According to the above insole, when a foot including an excessively pronational subtalar joint is placed, the medial part guides the subtalar joint to an intermediate position. According to the insole, when the foot including the transverse tarsal joint deviated from the normal angle is placed, the lateral portion guides the transverse tarsal joint to the intermediate position. Therefore, the load on the lower limbs can be reduced.

(2) In a preferred example, in the insole according to (1), the inner tip portion includes an inner tip portion located on the opposite side of the connecting portion in the extending direction of the inner vertical arch, and the inner tip portion is , Is provided at a position included in a predetermined range including the scaphoid bone in the extending direction of the medial longitudinal arch.

According to the above insole, the dimension of the inner part in the extending direction of the inner vertical arch can be made compact. Therefore, it can be attached to shoes of various shapes and sizes without processing such as cutting.

(3) In a preferred example, in the insole according to (1) or (2), the outer portion includes an outer tip portion located on the opposite side of the connecting portion in the extending direction XB of the outer longitudinal arch. The lateral tip is provided at a position included in a predetermined range including the cuboid bone in the extending direction of the lateral longitudinal arch.

According to the above insole, the dimension of the outer part in the extending direction of the outer vertical arch can be made compact. Therefore, it can be attached to shoes of various shapes and sizes without processing such as cutting.

(4) In a preferred example, in the insole according to any one of (1) to (3), the opening is provided so as to face the inner portion, the outer portion, and the connecting portion.

According to the above insole, since there is no member that contributes to the thickness of the insole in the connecting portion that supports the heel and its periphery, the increase in thickness is suppressed. Therefore, even when the shoes are worn on shoes with a shallow opening such as high heels or pumps, the shoes are difficult to remove. Therefore, it can be suitably attached to various shoes.

(5) In a preferred example, in the insole according to any one of (1) to (4), the inner portion and the outer portion are said to be described when a force is applied from one to the other. It is composed of a material that restores in the direction away from the other.

According to the above insole, the inner part and the outer part are restored as described above, so that it fits the shoe when attached to the shoe. Therefore, the position in the shoe is stable.

According to the insole according to the present invention, the load applied to the lower limbs can be reduced.

The perspective view of the insole of an embodiment. Schematic diagram of the lower limbs. The schematic diagram of the state in which the right foot of FIG. 2 is pronational. Front view of the insole of FIG. Top view of the insole of FIG. Bottom view of the insole of FIG. The rear view of the lower limbs and the insole with the insole of FIG. 1 attached.

Hereinafter, an embodiment of the insole according to the present invention will be described with reference to the drawings. FIG. 1 is a perspective view of the insole 10 of the embodiment. FIG. 2 is a schematic view showing the right lower limb 100. FIG. 3 is a schematic view of the right foot 110 in the case of the pronational foot.

<1. Insole configuration>
The insole 10 shown in FIG. 1 is configured to reduce the load on the user's lower limbs. The insole 10 shown in FIG. 1 and the like is an insole that guides the subtalar joint and the transverse tarsal joint of the user's right foot 110 to an intermediate position. The insole 10 is used by being attached to the shoe for the user's right foot. The insole that guides the subtalar joint and transverse tarsal joint of the user's left foot to the intermediate position is composed of the insole shown in FIG. Since the configuration is the same except for the above, the description thereof will be omitted. In the following, the insole 10 will be described as an example in which the subtalar joint and the transverse tarsal joint of the user's right foot 110 are guided to the intermediate position.

As shown in FIG. 2, the user's right foot 110 includes the talus 111, the calcaneus 112, and the subtalar joint 113 located between the talus 111 and the calcaneus 112. The pronational foot of the right foot 110 indicates a state in which the subtalar joint 113 is excessively pronational. In a typical example, in the case of flat feet, the subtalar joint 113 is excessively pronational. In the case of the pronational foot shown in FIG. 3, the function of the right foot 110 cannot be fully exerted. Further, it is known that the pronational foot causes foot diseases such as hallux valgus and plantar fasciitis, and adversely affects the standing posture of the human body. Similarly, if the user's transverse tarsal joint (not shown) deviates from the normal angle, the function of the right foot 110 cannot be fully exerted. The insole 10 reduces the burden on the user's right lower limb 100 by guiding the subtalar joint 113 and the transverse tarsal joint to the intermediate position.

As shown in FIG. 1, the insole 10 includes an inner portion 20, an outer portion 30, a connecting portion 40, and an opening 50. In the present embodiment, the inner portion 20, the outer portion 30, and the connecting portion 40 are integrally formed. Therefore, since a joining member such as an adhesive for joining these elements does not intervene between the inner portion 20, the outer portion 30, and the connecting portion 40, for example, even when the insole 10 is washed. The inner portion 20, the outer portion 30, and the connecting portion 40 are difficult to separate from each other.

The material constituting the insole 10 can be arbitrarily selected. In a preferred example, the insole 10 is a material that restores in a direction away from the other when a force is applied from one of the inner portion 20 and the outer portion 30 in the direction of approaching the other (hereinafter, referred to as "restoration material"). ). The restoration material is, for example, EVA (Ethylene Vinyl Acetate) resin, urethane resin containing a foaming material, or silicon resin.

The medial portion 20 is provided along the proximal portion of the medial longitudinal arch of the right foot 110. As shown in FIG. 4, the medial portion 20 comprises a medially inclined surface 21 configured to guide the subtalar joint 113 (see FIG. 2) of the rotating right foot 110 to an intermediate position. The medial inclined surface 21 supports the medial side of the right foot 110, which is the pronational foot. The inner inclined surface 21 includes a first inner inclined surface 21A and a second inner inclined surface 21B. The magnitude of the inclination angle θA of the first inner inclined surface 21A with respect to the horizontal plane 200 and the inclination angle θB of the second inner inclined surface 21B with respect to the horizontal plane 200 can be arbitrarily selected. In the present embodiment, the tilt angle θB is larger than the tilt angle θA.

As shown in FIGS. 5 and 6, the inner portion 20 includes an inner tip portion 22 located on the opposite side of the connecting portion 40 in the extending direction XA of the inner vertical arch. The distance LA between the heel-side end 41 and the inner tip 22 of the connecting portion 40 in the extending direction XA of the inner vertical arch can be arbitrarily selected. In a preferred example, the distance LA is set so that when the insole 10 is attached to a standard size shoe, the medial tip 22 is within a predetermined range including the user's scaphoid bone. The predetermined range including the user's scaphoid bone is a range in which the medial tip portion 22 can substantially support the scaphoid bone. The predetermined range including the user's scaphoid bone is, for example, a range including a position closer to the heel than the scaphoid bone or a position closer to the toe than the scaphoid bone. Standard sizes are, for example, 22 cm to 24 cm, set primarily for women, or 25 cm to 28 cm, set primarily for men.

The width WA of the inner portion 20 can be arbitrarily selected. The width WA in the width direction of the inner portion 20 is the length in the direction orthogonal to the extending direction XA of the inner vertical arch in the plan view of the insole 10 shown in FIG. In the present embodiment, the width WA becomes wider from the connecting portion 40 toward the inner tip portion 22.

The lateral portion 30 shown in FIG. 5 or 6 is provided along the proximal portion of the lateral longitudinal arch of the right foot 110. As shown in FIG. 4, the lateral portion 30 includes a lateral inclined surface 31 that guides the transverse tarsal joint, which is deviated from a normal angle, to an intermediate position. The magnitude of the inclination angle θC of the outer inclined surface 31 with respect to the horizontal plane 200 can be arbitrarily selected. In the present embodiment, the tilt angle θC is larger than the tilt angle θA and smaller than the tilt angle θB.

As shown in FIG. 5 or 6, the outer portion 30 includes an outer tip portion 32 located on the opposite side of the connecting portion 40 in the extending direction XB of the outer vertical arch. The distance LB between the heel-side end 41 and the outer tip 32 of the connecting portion 40 in the extending direction XB of the outer vertical arch can be arbitrarily selected. In a preferred example, the distance LB is set so that when the insole 10 is attached to a standard size shoe, the lateral tip 32 is within a predetermined range including the user's cuboid bone. The predetermined range including the user's cuboid bone is a range in which the cuboid bone can be substantially supported by the lateral tip portion 32. The predetermined range including the user's cuboid bone is, for example, a range including a position closer to the heel than the cuboid bone or a position closer to the toe than the cuboid bone. The standard size is the size exemplified in the description of the distance LA.

The width WB of the outer portion 30 can be arbitrarily selected. The width WB of the outer portion 30 is the length in the direction orthogonal to the extending direction XB of the outer vertical arch in the plan view of the insole 10 shown in FIG. In the present embodiment, the width WB gradually becomes narrower from the connecting portion 40 toward the inner tip portion 22. The relationship between the maximum width WAX of the inner portion 20 and the maximum width WBX of the outer portion 30 can be arbitrarily selected. In this embodiment, the maximum width WAX is longer than the maximum width WBX.

The connecting portion 40 shown in FIG. 5 or 6 is a curved portion provided so as to connect the inner portion 20 and the outer portion 30. The connecting portion 40 includes an inclined surface 42 configured to wrap around the soft tissue surrounding the calcaneus. The soft tissue surrounding the calcaneus includes the fat, muscles, water, and capillaries that make up the heel. When the user's right foot 110 is placed on the insole 10, the connecting portion 40 supports the user's heel. Therefore, the heel of the user is stable.

The opening 50 shown in FIG. 5 or 6 is provided so as to penetrate the insole 10. The opening 50 faces the inner portion 20, the outer portion 30, and the connecting portion 40. The opening 50 is inclined so as to approach the inner portion 20 from the inner tip portion 22 and the outer tip portion 32 toward the connecting portion 40 in the extension direction XA of the inner vertical arch and the extension direction XB of the outer vertical arch. One end 51 of the opening 50 in the longitudinal direction faces the connecting portion 40 and is closed by the connecting portion 40. The other end 52 of the opening 50 in the longitudinal direction is open.

<2. Action of insoles>
The insole 10 is inserted into a shoe for the user's right foot (not shown), for example, in a state where the inner portion 20 and the outer portion 30 are deformed so as to approach each other. After the insole 10 is inserted into the shoe, the inner portion 20 and the outer portion 30 are restored in a direction away from each other. Therefore, the insole 10 fits the shoe. Next, the right foot 110 is placed on the insole 10. The inside of the user's right foot 110 is placed on the inside inclined surface 21 of the inside portion 20. Since the medial sloping surface 21 is configured to guide the supination subtalar joint 113 to an intermediate position, the medial side of the user's right foot is lifted by the medial sloping surface 21, as shown in FIG. The user's right foot 110 is corrected to a normal state. The outside of the user's right foot 110 is placed on the outside inclined surface 31 of the outside portion 30. Since the lateral inclined surface 31 is configured to guide the transverse tarsal joint displaced from the normal angle to the intermediate position, the lateral side of the user's right foot is lifted by the lateral inclined surface 31 as shown in FIG. In addition, the user's right foot 110 is corrected to a normal state.

<3. Effect of this embodiment>
With the insole configured as described above, the following effects can be obtained.
<3-1>
When the right foot 110 including the supination subtalar joint 113 is placed, the medial portion 20 guides the subtalar joint 113 to an intermediate position. When the right foot 110 including the transverse tarsal joint deviated from the normal angle is placed, the lateral portion 30 guides the transverse tarsal joint to the intermediate position. Therefore, the load applied to the right lower limb 100 can be reduced.

<3-2>
The distance LA is set so that when the insole 10 is attached to a standard size shoe, the medial tip 22 is within a predetermined range including the user's scaphoid bone. Since the dimension of the inner portion 20 in the extending direction XA of the inner vertical arch can be made compact, the insole 10 can be attached to shoes of various shapes and sizes without cutting or other processing.

<3-3>
The distance LB is set so that when the insole 10 is attached to a standard size shoe, the lateral tip 32 is within a predetermined range including the user's cuboid bone. Since the dimension of the outer portion 30 in the extending direction XB of the outer vertical arch can be made compact, the insole 10 can be attached to shoes of various shapes and sizes without cutting or other processing.

<3-4>
Since the opening 50 is provided so as to face the inner portion 20, the outer portion 30, and the connecting portion 40, there is no member contributing to the thickness of the insole in the connecting portion 40 and its periphery. Therefore, it is suppressed that the thickness of the insole 10 becomes large. Therefore, even when the insole 10 is attached to shoes having a shallow opening such as high heels or pumps, the shoes are difficult to remove. Therefore, it can be attached to various shoes.

<3-5>
Since the inner portion 20 and the outer portion 30 are made of the restoration material, the inner portion 20 and the outer portion 30 fit the shoe when attached to the shoe. Therefore, the position of the insole 10 in the shoe is stable.

<3-6>
Since the insole 10 supports the position corresponding to the boat-shaped bone and the cubic bone from the heel, the user in the shoe even when the insole 10 is attached to a shoe having a soft heel counter or a shoe without a heel counter. The position of the heel is stable.

<3-7>
The portion that supports the heel of the shoe has a curved surface according to the heel pitch. For example, high heels have a curved surface with a large curvature. Even when the insole 10 is mounted on a curved surface having a large curvature, the insole 10 is deformed according to the load of the user, so that the position in the shoe can be easily maintained appropriately.

<3-8>
When the user's right foot 110 is placed on the insole 10, most of the soft tissues that make up the heel, in other words, the tissues other than the bone, are supported by the medial portion 20, the lateral portion 30, and the connecting portion 40. , Soft tissue is not easily deformed. Since the user's own soft tissue functions like a cushion, the impact on the heel can be absorbed without providing a shock absorbing material or the like.

<3-9>
Since the insole 10 has an inner portion 20, an outer portion 30, and a connecting portion 40 integrally formed, no combination of parts is required when the insole 10 is attached to shoes. Therefore, convenience is enhanced.

<3-10>
Since the insole 10 does not require an instrument and a large force for attachment / detachment to / from shoes, it can be easily attached / detached to / from various shoes.

<4. Modification example>
The above-described embodiment is an example of possible forms of the insole according to the present invention, and is not intended to limit the form. The insole according to the present invention may take a form different from the form exemplified in the embodiment. One example thereof is a form in which a part of the configuration of the embodiment is replaced, changed, or omitted, or a new configuration is added to the embodiment. An example of a modification of the embodiment is shown below.

<4-1>
The distance LA between the heel-side end 41 and the inner tip 22 of the connecting portion 40 in the extending direction XA of the inner vertical arch can be arbitrarily changed. In the modified insole 10, the distance LA is such that the medial tip 22 is at any corresponding position from the user's scaphoid to the toe or metatarsal head when the insole 10 is attached to a standard size shoe. Is set to be.

<4-2>
The distance LB between the heel-side end 41 and the outer tip 32 of the connecting portion 40 in the extending direction XB of the outer vertical arch can be arbitrarily changed. In the modified insole 10, the distance LB is such that the lateral tip 32 is at any corresponding position from the user's cuboid to the toe or metatarsal head when the insole 10 is attached to a standard size shoe. Is set to be.

<4-3>
The shape of the opening 50 can be arbitrarily changed. In the modified insole 10, the other end 52 of the opening 50 is closed. In other words, in the insole 10 of this modified example, the inner tip portion 22 and the outer tip portion 32 are connected to each other.

<4-4>
In the above embodiment, the inner portion 20, the outer portion 30, and the connecting portion 40 are integrally formed, but at least one of the inner portion 20, the outer portion 30, and the connecting portion 40 is the other. It may be composed separately from the elements of. In the case of this modification, it is preferable that the insole 10 includes a cover member that covers the joint portion between the integrally formed element and the separately formed element. Further, in the case of this modification, it is preferable to provide a connecting structure for combining an element composed integrally and an element composed separately. An example of the connecting structure is a fitting structure with unevenness.

<4-5>
The configuration of the insole 10 can be changed arbitrarily. The modified insole 10 further includes a support member that can be attached to and detached from at least one of the inner portion 20, the outer portion 30, and the connecting portion 40. In this modification, for example, the inner portion 20, the outer portion 30, and the outer portion 40 include an internal space for accommodating the support member. In another example, the support member is coupled to the inner portion 20, the outer portion 30, and the connecting portion 40 via a coupling structure. An example of a bonded structure is a kanhe structure due to unevenness. According to this modification, by selecting the physical properties of the material that constitutes the support member, the force that guides the subtalar joint to the intermediate position by the medial part 20 and the transverse tarsal joint to the intermediate position by the lateral part 30. The guiding force can be adjusted. An example of physical properties is the hardness of the material that makes up the support member. For example, the higher the hardness of the material constituting the support member, the greater the force of the medial portion 20 to guide the subtalar joint to the intermediate position and the force of the lateral portion 30 to guide the transverse tarsal joint to the intermediate position.

<4-6>
The material constituting the insole 10 can be arbitrarily changed. By adjusting the hardness of the material constituting the insole 10, the force of the medial portion 20 to guide the subtalar joint to the intermediate position and the force of the lateral portion 30 to guide the transverse tarsal joint to the intermediate position can be adjusted. The higher the hardness of the material constituting the insole 10, the greater the force of the medial portion 20 to guide the subtalar joint to the intermediate position and the force of the lateral portion 30 to guide the transverse tarsal joint to the intermediate position.

For example, in the insole 10 of the first modification, the inner portion 20, the outer portion 30, and the connecting portion 40 are integrally formed by injection molding. In the insole 10 of the first modification, even if the materials constituting the inner portion 20 and the outer portion 30 are the same material, the hardness of the material constituting the inner portion 20 and the outer side can be obtained by devising the configuration of the injection nozzle. The hardness of the material constituting the portion 30 can be made different. In the insole 10 of the second modification, the inner portion 20 and the outer portion 30 are separately formed. In the insole 10 of the second modification, the hardness of the material constituting the inner portion 20 and the hardness of the material constituting the outer portion 30 are different. In the insole 10 of the second modification, the material constituting the inner portion 20 and the material constituting the outer portion 30 may be the same material or different materials.

<4-7>
The surface of the insole 10 on which the user's foot is placed (hereinafter referred to as the "surface") The coefficient of friction with the user's foot can be arbitrarily changed depending on the material constituting the insole 10 and at least one of the surface structures. Is. The modified insole 10 has a friction adjusting structure on the surface. The friction adjusting structure is, for example, a minute unevenness provided on the surface. The friction adjusting structure is provided on the whole or a part of the surface. According to this modification, the frequency of use and the replacement time of the insole 10 can be easily grasped by the degree of reduction due to the wear of minute irregularities. In addition, the user's foot does not slip easily with respect to the insole 10.

<4-8>
In the above embodiment, the insole 10 includes an inner inclined surface 21 and an outer inclined surface 31. The modified insole 10 includes only one of the inner inclined surface 21 and the outer inclined surface 31.

<4-9>
In the above embodiment, the insole 10 is configured to be attached to and detachable from the shoe. The modified insole 10 has a form that is pre-bonded to the elements constituting the shoe. The elements that make up a shoe are, for example, an insole.

10 ... insole, 20 ... inner part, 21 ... inner inclined surface, 22 ... inner tip part, 30 ... outer part, 31 ... outer inclined surface, 32 ... outer tip part, 40 ... connecting part, 50 ... opening.

Claims

The medial part that supports the medial longitudinal arch of the foot and
The lateral part that supports the lateral longitudinal arch of the foot and
An insole including a connecting portion that connects the inner portion and the outer portion and supports the heel.
An opening provided between the inner portion and the outer portion,
A medial inclined surface provided on the medial side and configured to guide the introverted subtalar joint to the intermediate position, and a lateral tarsal joint provided on the lateral part to guide the transverse tarsal joint to the intermediate position. An insole that comprises at least one of the outer slopes, which is configured in.
The inner portion includes an inner tip portion located on the opposite side of the connecting portion in the extending direction of the inner longitudinal arch.
The insole according to claim 1, wherein the medial tip is provided at a position included in a predetermined range including the scaphoid bone in the extending direction of the medial longitudinal arch.
The outer portion includes an outer tip portion located on the opposite side of the connecting portion in the extending direction of the outer longitudinal arch.
The insole according to claim 1 or 2, wherein the lateral tip portion is provided at a position included in a predetermined range including a cuboid bone in the extending direction of the lateral longitudinal arch.
The insole according to any one of claims 1 to 3, wherein the opening is provided so as to face the inner portion, the outer portion, and the connecting portion.
The inner portion and the outer portion according to any one of claims 1 to 4, which are composed of a material that restores the inner portion and the outer portion in a direction away from the other when a force in a direction approaching the other is applied. Described insoles.