JP7525214B1 - footwear - Google Patents

Abstract

[Problem] To provide footwear that has the function of correcting bow legs and posture. [Solution] Footwear 1 includes a thong 20 consisting of a front strap 21 and a side strap 22, and a footrest 10 to which the thong 20 is attached and on which the foot is placed. The footrest 10 includes a heel-missing section 11a in which the thickness of the section facing the heel of the user is reduced, a little toe-side missing section 11c in which the thickness of the section on the little toe side of the front strap 21 and on the toe side of the heel-missing section 11a is reduced, and a toe section 11b on which the sole of the user's foot is placed. The toe portion 11b has a horizontal portion 11e that contacts the heel side from the portion where the lateral head of the adductor hallucis muscle contacts, and an inclined portion 11d that slopes upward from the horizontal portion 11e toward the toe side, and the little toe side missing portion 11c faces at least the middle finger, ring finger, and little finger of the user's foot and their bases, and the lateral head of the adductor hallucis muscle located closer to the heel than the bases, and does not face the big toe side of the front portion 21. [Selected Figure] Figure 1

Description

The present invention relates to footwear that is open from the ankle down, such as sandals and Japanese sandals.

Open footwear such as zori and sandals, which are open from the ankle down, is generally made up of a flat sole shaped like the sole of the foot, to which a belt or strap is attached. In addition, zori and sandals with health benefits, such as protrusions on the sole to stimulate pressure points on the sole while walking, or a sideways inclination of the sole to correct bow legs or knock-knees, have become popular.

A conventional technique of this type is described in Patent Document 1. Patent Document 1 discloses health sandals in which the front part of the thong is attached in two places so that the index finger is sandwiched between the thumb, middle finger, ring finger, and little finger in a 1:3 ratio with the index finger at the center, and the top part where the index finger rests is raised by about 2 to 5 mm.

Utility Model Registration No. 3232282

In recent years, however, there has been a demand for relatively inexpensive footwear such as beach sandals to have health benefits. In particular, there is a demand for beach sandals that can correct bow legs and posture.

The present invention aims to meet these demands by providing footwear that has the function of correcting bow legs and posture.

To achieve the above objective, the present invention has the following configuration.

(1) Footwear (e.g., footwear 1) having a footrest (e.g., footrest 10) on which a foot can be placed,
The footrest has a thin heel portion (e.g., heel notch 11a) that is thinner at a portion facing the heel of a user, a little toe side thin portion (e.g., little toe side notch 11c) that is thinner at a portion on the little toe side of the end portion on the toe side and on the toe side of the thin heel portion, and a support portion (e.g., toe portion 11b) that is formed in a portion excluding the thin heel portion and the thin heel portion and on which the sole of the user is placed,
The placement portion has a horizontal portion (e.g., horizontal portion 11e) that contacts the heel side from the portion where the lateral head of the adductor hallucis muscle contacts, and an inclined portion (e.g., inclined portion 11d) that inclines upward from the horizontal portion toward the toe side,
The thin-walled portion on the little toe side is a portion that faces at least the middle finger, ring finger, little toe and their bases of the user's foot, and the transverse head of the adductor hallucis muscle located closer to the heel than the bases of the toe, and is formed in a portion that faces the outer half when the sole of the foot is divided into two portions near the arch, a toe side and a heel side, and the toe side is further divided into an inner half on the big toe side and an outer half on the little toe side, and does not face the big toe side from the end of the toe side.

According to (1), by forming a thin part on the little toe side on the footrest, when a user walks wearing the footwear of the present invention, the outer part of the sole on the toe side is separated from the upper surface of the footrest, so that the user's weight is concentrated on the inner side of the sole of the user's foot. This makes it possible to correct the center of gravity of the user's leg to the inside, and if the user has bow legs, it is possible to narrow the distance between the user's knees. Furthermore, by forming a thin heel part on the footrest, the user walks in a position as if standing on tiptoes. Therefore, by walking wearing the footwear, it is possible to naturally train the muscles of the calf and the back of the thigh to the buttocks.
Furthermore, when a user wears the footwear of the present invention, the user can place the heel on the surface of the thin heel part with the foot on the footstool. This makes the heel lower than the toe, allowing the user's center of gravity to move backward, making it easier to apply weight to the heel. This makes it possible to correct a hunched posture, and allows the user to move the heel up and down with the foot on the footstool when walking, making it possible to efficiently train the muscles of the user's calves and the muscles from the back of the thighs to the buttocks.
Moreover, because the lateral head of the adductor hallucis muscle is located on the horizontal part of the footrest and the big toe is located on the inclined part, when the user wears the footwear of the present invention, the line of the spine can be straightened relative to the ground and the weight can be easily placed on the heel side. This makes it possible to efficiently train the muscles of the user's calves and the backs of the thighs to the buttocks, and also corrects a hunched posture.

(2) In the above (1), a strap is further provided which is attached to the foot rest and comprises a front strap part which is held between the big toe and the index toe and a side strap part which is placed on the instep of the foot.
Footwear, characterized in that the front portion is disposed on the inclined portion.

According to (2), since the front part is positioned on the inclined part, it is possible to maintain the base of the big toe and index toe positioned on the inclined part.

(3) In (2), the footrest has a two-layer structure (e.g., a first layer 11 and a second layer 12),
The lower layer of the two-layer structure is shaped to fit the circumference of the foot without any missing parts,
The other upper layer of the two-layer structure has the support portion, a heel missing portion (e.g., heel missing portion 11a) that is missing a portion facing the heel of a user, and a little toe side missing portion (e.g., little toe side missing portion 11c) that is missing a portion on the little toe side of the front portion and on the toe side of the heel missing portion,
The thin heel portion is a portion below the missing heel portion in the lower layer,
Footwear, characterized in that the little toe side thin portion is a portion of the lower layer below the little toe side missing portion.

According to (3), the heel missing part of the upper layer forms a thin heel part, and the little toe side missing part of the upper layer forms a thin little toe side part. As a result, like (1), if the user has bow legs, it is possible to narrow the distance between the user's knees, correct a hunched posture, and efficiently train the muscles of the user's calves and the backs of the thighs to the buttocks.

(4) In (3), the upper layer has a two-layer structure consisting of a first upper layer (e.g., upper layer 31) of uniform thickness that contacts the sole of the user's foot, and a second upper layer (e.g., lower layer 32) that is fixed to the lower surface of the first upper layer,
The second upper layer is characterized in having a lower layer horizontal portion (e.g., lower layer horizontal portion 32a) that faces the heel side region from the portion of the first upper layer where the lateral head of the adductor hallucis muscle abuts, and a lower layer inclined portion (e.g., lower layer inclined portion 32b) that gradually becomes thicker from the lower layer horizontal portion toward the toe side and has an upper surface that slopes upward from the upper surface of the lower layer horizontal portion.

According to (4), a slope is formed in the upper layer by fixing the lower surface of the first upper layer to the upper surface of the second upper layer while the first upper layer is deformed to conform to the slope of the lower layer. Therefore, by fixing the first layer, which has been treated to form a non-slip surface such as unevenness, to the second layer, it is possible to easily create an upper layer in which a predetermined treatment has been applied to the surface of the slope.

(5) In (4), the second upper layer has a backside slope portion (e.g., backside slope portion 32c) that slopes gently downward toward the toe side on the opposite side of the lower layer slope portion.

(5) The thickness of the upper layer on the toe side can be increased.

(6) In (5), the first upper layer and the second upper layer are made of the same material and are colored differently from each other.

According to (6), since the first layer and the second layer are colored in different colors, it is possible to impress upon the user that the second layer is thicker toward the toes and the area on which the big toe is placed is higher.

(7) In any one of (1) to (6), the height from the top surface of the horizontal portion to the top of the inclined portion is 7 mm or more and 22 mm or less.

According to (7), it is possible to set the height from the top surface of the horizontal section to the top of the inclined section at a height that makes it easy to achieve the effect of (1).

The present invention makes it possible to provide footwear that has the function of correcting bow legs and posture.

1 is a perspective view showing the appearance of footwear 1 according to a first embodiment of the present invention. FIG. 2 is a plan view of FIG. 1 . FIG. 2 is a side view of FIG. 1 . FIG. 2 is a side view of footwear 2 according to a second embodiment of the present invention. FIG. 11 is a side view of a modified example of footwear 2 in the second embodiment of the present invention.

The following describes in detail an embodiment of the present invention with reference to the drawings.

[First embodiment]
Fig. 1 is a perspective view showing the appearance of footwear 1 in a first embodiment of the present invention. Fig. 2 is a plan view of Fig. 1. Fig. 3 is a side view of Fig. 1. Footwear 1 is a so-called beach sandal, and includes a footrest 10 and a thong 20. Note that Figs. 1 to 3 show footwear 1 to be worn on the left foot of a user, and since footwear 1 to be worn on the right foot is symmetrical to footwear 1 to be worn on the left foot, detailed description of footwear 1 to be worn on the right foot will be omitted.

The footrest 10 is made of rubber or EVA urethane material, and has a two-layer structure consisting of a first layer 11 and a second layer 12.

The first layer 11 is a plate-shaped member that conforms to the outer circumference of the foot and includes a heel missing portion 11a, a toe portion 11b, and a pinky toe missing portion 11c.

The heel missing portion 11a is formed by removing the area that faces the user's heel.

The toe portion 11b is the portion of the first layer 11 on which the user's toes rest, and has an inclined portion 11d and a horizontal portion 11e.

The missing portion 11c on the little toe side is formed by making a cut in a gentle arc along the length of the first layer 11 from the end of the first layer 11 on the toe side, passing through a part slightly closer to the little toe than the front part 21 of the thong 20, passing through a part slightly closer to the toe than the heel side edge of the first layer 11, and cutting to the outer side of the footrest 10.

The toe portion 11b comes into contact with the part of the sole of the user's foot other than the part facing the heel missing portion 11a and the part facing the little toe side missing portion 11c.
The horizontal portion 11e is a portion of the toe portion 11b that contacts the heel side from the portion where the lateral head of the adductor hallucis muscle of the user contacts. The inclined portion 11d is a portion of the toe portion 11b that contacts the thumb, index finger and the vicinity of their bases, and is formed so that the thickness gradually increases from the horizontal portion 11e of the toe portion 11b toward the toes. As a result, the upper surface of the inclined portion 11d is an inclined surface that slopes upward toward the toes. The lower surface of the first layer 11 is flat.

The first layer 11 has a two-layer structure consisting of an upper layer 31 and a lower layer 32. The upper layer 31 and the lower layer 32 are made of the same material and have the same shape in a plan view. The upper layer 31 is made of a plate-like material of uniform thickness, and the upper surface is in contact with the sole of the user's foot. The upper surface of the upper layer 31 is formed into a rough surface consisting of fine irregularities. This makes it difficult for the sole of the user's foot to slip on the upper surface of the upper layer 31. In addition, the heel side edge of the upper layer 31, in other words the edge that is the boundary with the heel missing portion 11a, is chamfered. In addition, the little toe side edge of the upper layer 31, in other words the edge that is the boundary with the little toe side missing portion 11c, is also chamfered.

The lower layer 32 is adhesively fixed to the underside of the upper layer 31. The lower layer 32 is composed of a lower layer horizontal portion 32a and a lower layer inclined portion 32b. The lower layer horizontal portion 32a is the portion that faces the heel side of the upper layer 31 from the portion of the upper layer 31 where the lateral head of the adductor hallucis muscle abuts. The lower layer inclined portion 32b is a portion that gradually becomes thicker from the lower layer horizontal portion 32a toward the toe side, and whose upper surface slopes upward from the upper surface of the lower layer horizontal portion 32a.

According to this embodiment, the height H from the top surface of the lower layer horizontal portion 32a to the top of the inclined surface of the lower layer inclined portion 32b is preferably set in the range of 7 mm to 22 mm, and more preferably set to 15 mm to 20 mm.

The upper layer 31 and the lower layer 32 are colored differently from each other. It is desirable that the colors of the upper layer 31 and the lower layer 32 are colors that allow the layers to be clearly distinguished from each other. As an example, the upper layer 31 can be black and the lower layer 32 can be white.

The second layer 12 is a flat plate shaped to fit the outer circumference of the foot, without the heel missing portion 11a, the little toe missing portion 11c, or the inclined portion 11d formed in the first layer 11. The underside of the second layer 12 is roughened with wavy projections and recesses. This makes the second layer 12 less likely to slip on the ground.

The footrest 10 is constructed by bonding the lower surface of the first layer 11, i.e., the lower surface of the lower layer 32, to the upper surface of the second layer 12, and a step is formed between the upper surface of the first layer 11 and the upper surface of the second layer 12 at the heel missing portion 11a and the little toe side missing portion 11c. That is, in the footrest 10, the heel missing portion 11a and the little toe side missing portion 11c become thin-walled portions. In addition, by bonding the lower surface of the upper layer 31 to the upper surface of the lower layer 32, the upper layer 31 is fixed to the upper surface of the second layer in a state in which it is deformed to fit along the upper surface of the lower layer 32. As a result, the upper layer 31 is inclined along the lower layer horizontal portion 32a and lower layer inclined portion 32b of the lower layer 32, and the horizontal portion 11e and inclined portion 11d are formed in the first layer 11.

The thong 20 is made of cloth or synthetic resin and is composed of a front part 21 and a side part 22. The front part 21 extends upward from the board surface of the foot rest 10 and is the part that is pinched between the big toe and index toe of the user's foot, and is located on the inclined part 11d of the first layer 11. The side part 22 is made of a string-like or band-like member made of cloth or synthetic resin, and is divided into two parts: an inner side part 22a that extends from the front part 21 toward the side part of the foot rest 10 on the big toe side (hereinafter referred to as the inner side) and an outer side part 22b that extends toward the side part of the little toe side (hereinafter referred to as the outer side). The end part of the inner side part 22a is fixed to the corner part on the big toe side at the heel side end of the first layer 11. The outer side part 22b is fixed to the corner part on the little toe side at the heel side end of the first layer 11.

Next, we will explain the state when the user is wearing footwear 1.

A user can wear the footwear 1 by passing their foot through the thong 20 and pinching the front strap 21 between the user's big toe and index toe. At this time, the inner strap 22a passes over the base of the user's big toe and the outer strap 22b passes over the top of the user's foot, making it difficult for the footwear 1 to come off the user's foot. In addition, because the front strap 21 is positioned on the inclined portion 11d, the user's big toe and index toe and their bases come into contact with the inclined surface of the inclined portion 11d. Therefore, only the parts of the user's big toe and index toe and their bases on the sole of the foot are positioned higher than the upper surface of the horizontal portion 11e.

When the user is wearing the footwear 1, the missing part 11c on the little toe side faces the middle toe, ring toe, little toe and their bases of the user's foot, the lateral head of the adductor hallucis muscle located closer to the heel than the bases, and the flexor digitorum minimi brevis muscle on the lateral side of the arch. In other words, if the sole of the foot is divided into two parts near the arch, the toe side and the heel side, and the toe side is further divided into the big toe side (inner side) and the little toe side (outer side), the outer half of the toe side generally faces the missing part 11c on the little toe side.

As a result, when a user walks wearing footwear 1, the outer half of the sole on the toe side moves away from the top surface of the second layer 12, so the user's weight is concentrated on the inner side of the sole. Also, when standing upright or walking, the user becomes conscious of not allowing the outer part of the sole facing the little toe side missing portion 11c to come into contact with the top surface of the second layer 12. This makes it possible to correct the center of gravity of the user's leg to the inside, and if the user has bow legs, it is possible to narrow the distance between the user's knees.

In addition, because footwear 1 has heel missing portion 11a, the user's entire heel faces heel missing portion 11a. Therefore, when the user walks wearing footwear 1, they walk as if they are standing on their tiptoes, and walking while wearing footwear 1 makes it possible to naturally train the muscles in the calves and from the back of the thighs to the buttocks. Even when standing, the user's heels are able to move up and down, so the muscles on the back of the foot are used, and the hip joints tend to clench rather than widen. In this way, it becomes possible to correct bowed legs.

The user can also train muscles by walking on his/her heels. Specifically, when the user walks with the heel of the footwear 1 touching the ground first, the user's heel is positioned on the upper surface of the second layer 12, which is lower than the upper surface of the first layer 11, so the center of gravity moves backward and the weight is more likely to be applied backward. In particular, since the toes of the user's feet are placed on the inclined portion 11d and the big toe, index finger and their bases are higher than other parts of the sole, the heel side is more likely to move downward and the user is less likely to bend forward. As a result, since the parts of the sole other than the big toe, index finger and their bases are usually placed on the horizontal portion 11e, it is possible to assume a posture in which the line of the spine is perpendicular to the ground. Here, even if the user tries to bend forward after a certain period of time, because the line of the spine is tilted forward, the thumb, index finger and their bases are resting on the inclined portion 11d, it is difficult to bend forward, and even if the user bends forward, the line of the spine can be returned to a direction perpendicular to the ground. In this way, it is possible to correct the user's posture. Since it is difficult to bend forward, the time spent in a posture in which gravity is applied to the face, such as a downward posture, can be shortened. This reduces the occurrence of swelling caused by moisture gathering in the face, and as a result, a smaller face effect can be expected. Furthermore, by correcting the forward-leaning posture to a better posture by making it difficult to bend forward, it is possible to release the eyeballs from pressing against the fascia, and eye fatigue can be relieved. In addition, by correcting the forward-leaning posture to a better posture, it is possible to achieve effects such as improving walking posture, making it easier to lift the feet, reducing stiff shoulders, and improving blood flow to the back of the neck.

In particular, according to this embodiment, the height H from the top surface of the lower layer horizontal portion 32a to the top of the inclined surface of the lower layer inclined portion 32b is set in the range of 7 mm to 22 mm. Here, if the height H is too low, it becomes difficult to move the spine line backward, and conversely, if it is too high, there is a risk that the spine line will be moved backward more than necessary in a normal posture. Therefore, if the height H is in the range of 7 mm to 22 mm as in this embodiment, when the user takes a forward-leaning posture and the spine line tilts forward, it is possible to move the spine line backward and correct it to a straight state with respect to the ground. More preferably, by setting the height H to 15 mm to 20 mm, it is possible to stably correct the spine line when the user takes a forward-leaning posture and the spine line tilts forward.

Furthermore, when the user's heel is on the top surface of the second layer 12, the user's middle finger, ring finger, little finger, and their bases are in a floating state facing the little finger side missing portion 11c, so the user has to brace themselves with the thumb and index finger, which are resting on the first layer 11, and the areas around them, in order to maintain balance. This causes the middle finger, ring finger, little finger, and their bases to be kept in a floating state. This makes it possible to correct the center of gravity of the user's legs inward, and if the user has bow legs, it is possible to narrow the distance between the user's knees.

Incidentally, some users have the habit of walking with their center of gravity on their heels (so-called heel-walkers), while others have the habit of walking with their center of gravity on their toes (so-called tiptoe walkers). Users who heel-walk can correct their center of gravity forward by being conscious of walking so that their heels do not touch the top surface of the second layer 12. Users who tiptoe can correct their center of gravity backward by walking so that their heels touch the top surface of the second layer 12. In this way, footwear 1 can correct the walking posture of both heel-walkers and tiptoe-walkers.

In addition, because the step portion formed by the heel missing portion 11a is arc-shaped, it is possible to stimulate the area around the arch of the foot close to the arc-shaped heel portion when walking. In addition, because the portion between the heel missing portion 11a and the little toe side missing portion 11c in the first layer 11 is formed thin, the user can stimulate the side of the arch by moving the outer part of the sole up and down. This is expected to have a positive effect on health by stimulating the pressure points on the feet.

According to the first embodiment configured in this way, when a user wears footwear 1, the user's weight is concentrated on the inner side of the sole of the foot, making it possible to correct the center of gravity of the user's legs inward and narrowing the distance between the user's knees. It also makes it possible to efficiently train the muscles of the user's calves and the area from the back of the thighs to the buttocks. This allows the user to walk on the beach while changing into a swimsuit without worrying too much about bowed legs.

Furthermore, by forming the heel-missing portion 11a on the footrest 10, the user walks on tiptoe, and walking while wearing the footwear 1 naturally trains the muscles in the calves and from the back of the thighs to the buttocks. When the user wears the footwear 1, the user can place the heel on the top surface of the second layer 12 below the heel-missing portion 11a with the foot placed on the top surface of the first layer 11, and the user's center of gravity can be shifted backwards. This makes it possible to correct a hunched posture, and the user can move the heel up and down while walking with the foot placed on the first layer 11. This makes it easier to put weight on the heel, and makes it possible to efficiently train the muscles in the calves and from the back of the thighs to the buttocks.

In addition, the horizontal head of the adductor hallucis muscle of the user is located on the horizontal portion 11e of the footrest 10, and the big toe and middle toe and their bases are located on the inclined portion 11d, so that when the user wears the footwear of the present invention, the line of the spine can be straightened relative to the ground and weight can be easily placed on the heel side. This makes it possible to move the line of the spine backwards when the user leans forward, and correct the posture to be correct.

In addition, the upper layer 31 is deformed to conform to the lower layer inclined portion 32b, and the lower surface of the upper layer 31 is adhesively fixed to the upper surface of the lower layer 32, thereby forming the inclined portion 11d in the first layer 11. Therefore, by adhesively fixing the upper layer 31, whose surface (upper surface) has been processed to form an anti-slip feature such as unevenness, to the lower layer 32, it is possible to easily create the first layer 11 having an anti-slip feature such as unevenness formed on the surface (upper surface) of the inclined portion 11d.

In addition, because the upper layer 31 and the lower layer 32 are colored differently from each other, when the footwear 1 is viewed from the side, the lower layer 32 becomes thicker toward the toe side, and the user is given a visual impression that the area on which the big toe is placed is higher.

In addition, according to the first embodiment, when Speel plaster is applied to a corn on the outside of the sole, wearing footwear 1 can separate the area to which Speel plaster is applied from the ground, which is expected to reduce the chance of the Speel plaster slipping or peeling off while walking.

Although the first embodiment of the present invention has been described above, the embodiments of the present invention are not limited to the above-mentioned first embodiment. For example, the above-mentioned first embodiment has been described using beach sandals as an example, but it is also possible to apply it to sandals. Also, although the foot plate is made of rubber material, EVA urethane material, etc., the material of the foot plate is not limited to these. For example, it may be made of wood.

In the first embodiment, the footrest 10 is formed in two layers, but it may be a single layer (single plate) if a thin-walled portion is formed in the area of the footrest that faces the outer half of the toes on the sole of the user's foot and the area that faces the heel. Also, the first layer 11 and the second layer 12 may each be configured with multiple layers. Also, the first layer 11 also has a two-layer structure, but it may be a single layer (single plate).

Second Embodiment
Fig. 4 is a side view showing the appearance of footwear 2 according to a second embodiment of the present invention. In footwear 2 according to the second embodiment shown in Fig. 4, components that are the same as or have the same functions as components constituting footwear 1 according to the first embodiment shown in Figs. 1 to 3 are designated by the same reference numerals and detailed description thereof will be omitted.

In the second embodiment, the footwear 2 has a backside inclined portion 32c that slopes gently downward toward the toe side on the opposite side of the lower layer inclined portion 32b of the lower layer 32, as shown in FIG. 4.

As a result, the thickness of the toe portion of the lower layer 32 in the second embodiment is smaller than the thickness of the toe portion of the lower layer 32 in the first embodiment. Therefore, when the footwear 1 is viewed from the side, the lower layer 32 becomes thicker toward the toe side, and it is possible to give a stronger visual impression to the user that the area on which the big toe is placed is higher.

In addition, a sloped surface that slopes downward at the same gradient as the backside sloped portion 32c is formed on the upper surface of the second layer 12 at a portion facing the backside sloped portion 32c. This allows the back surface of the second layer 12 in the footwear 2 to be flat and not sloped.

Figure 5 is a side view showing a modified example of footwear 2 in the second embodiment of the present invention. In the second embodiment shown in Figure 4, an inclined surface is formed on the upper surface of the second layer 12 on the toe side, but in this modified example of the second embodiment, the second layer 12 is not formed with an inclined surface on the upper surface on the toe side, and instead is made of a plate material of uniform thickness.

As a result, the second layer 12 is inclined to follow the rear inclined portion 32c, so that the toe portion of the second layer 12 is inclined slightly downward as shown in FIG. 5(a). However, when a user stands on the ground wearing the footwear 2, the toe portion of the second layer 12 elastically deforms by the amount of the inclination, and the inclined portion 11d is lifted, as shown in FIG. 5(b). This makes it possible to lift the big toe, middle toe, and their bases slightly upward.

Reference Signs List 1, 2 Footwear 10 Footrest 11 First layer 11a Heel missing portion 11b Toe portion 11c Little toe side missing portion 11d Inclined portion 11e Horizontal portion 12 Second layer 20 Toe strap 21 Front strap portion 22 Side strap portion 22a Inner side strap portion 22b Outer side strap portion 31 Upper layer 32 Lower layer 32a Lower layer horizontal portion 32b Lower layer inclined portion 32c Back side inclined portion

Claims (7)

Footwear having a footrest on which the feet can be placed,
The foot rest has a heel thin section which is thinner at a section facing the heel of a user, a little toe side thin section which is thinner at a section on the little toe side of an end portion on the toe side and on the toe side of the heel thin section, and a placement section on which the sole of a user is placed, the placement section being formed in a section excluding the heel thin section and the little toe side thin section;
The placement portion has a horizontal portion that contacts the heel side from a portion where the lateral head of the adductor hallucis muscle contacts, and an inclined portion that is inclined upward from the horizontal portion toward the toe side,
the little toe side thin portion is a portion that faces at least the middle toe, ring toe, little toe and their bases of the user's foot, and the transverse head of the adductor hallucis muscle located closer to the heel than the bases of the toe side, and is formed in a portion that faces the outer half when the sole of the foot is divided into two parts, a toe side and a heel side, near the arch, and the toe side is further divided into an inner half on the big toe side and an outer half on the little toe side, and does not face the big toe side with respect to the end of the toe side;
The toe rest further includes a thong, which is attached to the foot rest and comprises a front part that is held between the big toe and the index toe and a side part that is placed on the instep of the foot.
The front portion is disposed on the inclined portion,
The footrest has a two-layer structure, an upper layer and a lower layer,
The lower layer of the two-layer structure is shaped to fit the circumference of the foot without any missing parts,
The other upper layer of the two-layer structure has the support portion, a heel missing portion in which a portion facing the heel of a user is missing, and a little toe side missing portion in which a portion on the little toe side of the front portion and on the toe side of the heel missing portion is missing,
The thin heel portion is a portion below the missing heel portion in the lower layer,
the little finger side thin portion is a portion of the lower layer below the little finger side missing portion,
the upper layer has a two-layer structure including a first upper layer of uniform thickness that contacts the sole of the user's foot and a second upper layer that is fixed to the lower surface of the first upper layer;
The second upper layer has a lower layer horizontal portion facing a region on the heel side from a portion of the first upper layer where the lateral head of the adductor hallucis muscle abuts, and a lower layer inclined portion that gradually becomes thicker from the lower layer horizontal portion toward the toe side and has an upper surface that slopes upward from an upper surface of the lower layer horizontal portion,
The second upper layer has a back side inclined portion that is gently inclined downward toward the toe side on the opposite side of the lower layer inclined portion.
Footwear characterized by: Footwear according to claim 1 ,
Footwear characterized in that the first upper layer and the second upper layer are made of the same material and colored differently from each other. Footwear according to claim 2,
The first upper layer is colored black and the second upper layer is colored white . Footwear according to any one of claims 1 to 3 ,
Footwear characterized in that the height from the upper surface of the horizontal portion to the top of the inclined portion is 7 mm or more and 22 mm or less. Footwear according to claim 4,
Footwear characterized in that the height from the upper surface of the horizontal portion to the top of the inclined portion is between 15 mm and 20 mm. Footwear according to claim 1,
Footwear characterized in that an upper surface of the first upper layer is formed into a rough surface consisting of projections and recesses. Footwear according to claim 1,
Footwear characterized in that the lower surface of the lower layer is formed into a rough surface with wavy unevenness.