Footwear

Abstract

To provide footwear with a posture correction function.SOLUTION: Footwear 1 comprises a footrest 10 on which the foot is placed, the footrest 10 having a heel-recessed part 11a with a reduced thickness of a portion opposing the user's heel, a fifth toe-side recessed part 11c with a reduced thickness of a portion on the user's fifth toe side, and a placement part 11b formed in a portion excluding the heel-recessed part 11a and the fifth toe-side recessed part 11c, on which the user's sole is placed. The fifth toe-side recessed part 11c is formed in portions opposing at least the user's fourth toe, fifth toe, and base areas thereof, an area of the adductor hallucis transverse head located closer to the heel relative to the base areas, and an area of the abductor digiti minimi muscle, the fifth toe-side recessed part being connected to the heel-side recessed part 11a on a lateral side of the fifth toe.SELECTED DRAWING: Figure 1

Description

[Technical Field]

[0001] The present invention relates to footwear that is open from the ankle down, such as sandals or zori. [Background technology]

[0002] Open footwear, such as zori and sandals, which are open from the ankle down, generally consists of a flat sole shaped like the sole of the foot, to which a belt or thong is attached. Traditionally, zori and sandals have been popular with health benefits, such as protrusions on the sole that stimulate pressure points on the sole while walking, or a sideways tilt in the sole to correct bow legs or knock knees.

[0003] Therefore, the applicant proposed the technology described in Patent Document 1. Patent Document 1 discloses footwear in which a footrest on which a user's foot rests is missing at least the portions of the footrest that face the user's middle toe, ring toe, and little toe and their bases, the transverse head of the adductor hallucis muscle located closer to the heel than the bases, and the portion that faces the heel. When a user walks wearing this footwear, the outer portion of the sole of the foot near the toes is lifted off the ground, so that the user's weight is concentrated on the medial side of the sole. This allows the user's center of gravity to be shifted inward. If the user has bow legs, this allows the user's knees to be spaced apart, and the user walks as if standing on their toes. Walking in the footwear naturally trains the muscles in the calves and the area from the back of the thighs to the buttocks. [Prior art documents] [Patent documents]

[0004] [Patent Document 1] Patent No. 7166035 Summary of the Invention [Problem to be solved by the invention]

[0005] However, people who wear high-heeled footwear, such as high heels, tend to have a relatively forward center of gravity, which causes their knees to be positioned forward, which in turn causes their ankles to tilt inward and their knees to turn inward, or in other words, causes their knees to twist inward. If this condition continues for a long period of time, the pelvis may widen, resulting in bowed legs, and the neck may become fixed in a straight position, resulting in a condition known as a straight neck. Thus, wearing high-heeled footwear can cause distortion of the skeleton, which can lead to pain in the legs and neck.

[0006] The present invention has been made in consideration of such problems, and has as its object to provide footwear having a posture correcting function. [Means for solving the problem]

[0007] In order to achieve the above object, the present invention has the following configuration.

[0008] (1) Footwear (e.g., footwear 1) having a footrest (e.g., footrest 10) on which the foot is placed, The foot rest has a thin heel portion (e.g., heel-notched portion 11a) that is thinned at a portion facing the heel of the user, a thin little toe side portion (e.g., little toe side notched portion 11c) that is thinned at a portion on the side of the little toe of the user, and a placing portion (e.g., placing portion 11b) that is formed in a portion excluding the thin heel portion and the thin little toe side portion and on which the sole of the user is placed, The footwear is characterized in that the little toe side thin section is formed in a region facing at least the 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 abductor hallucis minimi muscle, and is connected to the heel thin section on the side of the little toe side.

[0009] According to (1), when a user who normally wears high-heeled footwear puts on the footwear, the thin heel portion and the thin portion on the little toe side face the abductor hallucis minimi muscle on the sole of the user's foot. Therefore, the lateral side of the user's sole (the side on the little toe side) moves away from the surface of the footrest, making the lateral side of the sole (the side on the big toe side) prone to downward movement. Furthermore, the downward movement of the lateral side of the user's sole makes it easier for the user's knees to splay outward. As a result, the knees, which are twisted inward by wearing high-heeled footwear, can return to their original position, allowing the foot skeleton to return to its original position. Furthermore, when the user wears the footwear of the present invention, the heel can rest on the thin heel portion while the foot is placed on the footrest. Therefore, the heel side is lower than the toe side, making it easier for the user's center of gravity to shift backward, making it easier for weight to be applied to the heel side. This allows the user to correct a hunched posture and, when walking, allows the user to move the heels up and down with the feet on the footrests, enabling the user to efficiently train the muscles in the calves and from the back of the thighs to the buttocks.

[0010] (2) Footwear according to (1), characterized in that it comprises a front part (e.g., front part 21) that is held between the big toe and the index toe of the foot, and a side part (e.g., side part 22) that is placed on the instep, and further comprises a thong (e.g., thong 20) that is attached to the footrest.

[0011] According to (2), the footwear can be put on by pinching the front strap between the big toe and the index toe and placing the side strap over the top of the foot.

[0012] (3) In (2), the cross string portion has an outer cross string portion (e.g., outer cross string portion 22b) that is placed on the little toe side of the instep, and an inner cross string portion (e.g., inner cross string portion 22a) that is placed on the big toe side of the instep, The outer lateral cord portion and the inner lateral cord portion extend from the front cord portion and have their ends attached to the thin heel portion.

[0013] According to (3), since the outer and inner horizontal cords are attached to the thin heel portion, when the user walks in the footwear, the distance between the sole of the user's foot and the thin heel portion is reduced, making it easier to walk in the footwear.

[0014] (4) In (2), the side straps extend from the front straps to the big toe side of the instep, but not to the little toe side.

[0015] According to (4), when a user puts on footwear, the lateral side of the user's sole faces the thin portion on the little toe side and the thin portion on the heel. In this state, the lateral side of the user's sole is prone to moving downward, and since there is no horizontal strap that is attached to the top of the foot on the little toe side, the lateral side of the user's sole is prone to coming off the footrest. Therefore, in order to maintain posture, the user tries to grip the footrest with the arch of the user's foot near the arch of the foot. By putting on footwear, it is possible to encourage this gripping movement, which in turn leads to movements that normalize the user's skeletal structure.

[0016] (5) In (4), the footwear is characterized in that the end of the horizontal string portion is attached to the placement portion.

[0017] According to (5), the side string can be securely placed on the back of the shoe on the thumb side.

[0018] (6) In (1) to (5), the footwear is characterized in that the thin-walled portion on the little toe side has an inclined portion (e.g., downward inclined portion 11f) in the area facing the abductor hallucis minimi muscle, which slopes downward from the support portion toward the side portion on the little toe side.

[0019] According to (6), when the side of the sole of the user's foot on the side of the little toe moves downward while wearing the footwear, it first comes into contact with the downward slope, thereby preventing the outer side of the sole of the user from moving downward more than necessary. This allows the knee, which has been twisted inward, to return to its original position and makes walking easier. [Effects of the Invention]

[0020] According to the present invention, it is possible to provide footwear that has a posture correcting function. [Brief explanation of the drawings]

[0021] [Figure 1] 1 is a perspective view showing the appearance of footwear 1 according to a first embodiment of the present invention. [Figure 2] FIG. 2 is a plan view of FIG. [Figure 3] FIG. 2 is a side view of FIG. [Figure 4] FIG. 2 is a perspective view of footwear 2 according to a second embodiment of the present invention. [Figure 5] FIG. 5 is a plan view of FIG. [Figure 6] FIG. 5 is a side view of FIG. DETAILED DESCRIPTION OF THE INVENTION

[0022] Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.

[0023] [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 bilaterally 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.

[0024] The footrest 10 is made of rubber, EVA urethane, or the like, and has a two-layer structure consisting of a first layer 11 and a second layer 12.

[0025] The first layer 11 is a plate-like member formed to conform to the outer periphery of the foot, and includes a heel-cut portion 11a, a placement portion 11b, a little toe-side cut portion 11c, and a downwardly sloping portion 11f.

[0026] The heel-cut portion 11a is formed by cutting out a portion that faces the heel of the user.

[0027] The placement portion 11b is a portion of the first layer 11 on which the sole of the user's foot is placed, and has an upwardly inclined portion 11d and a horizontal portion 11e.

[0028] The upwardly inclined portion 11d has an inclined surface against which the user's thumb, index finger and the bases thereof come into contact, and the horizontal portion 11e has a horizontal surface against which the heel side of the user comes into contact from the area on the support portion 11b where the transverse head of the adductor hallucis muscle comes into contact.

[0029] The thickness of the upwardly inclined portion 11d gradually increases from the horizontal portion 11e toward the toe. As a result, the inclined surface of the upwardly inclined portion 11d is continuous with the horizontal surface of the horizontal portion 11e and inclined upward toward the toe. The lower surface of the first layer 11 is flat.

[0030] The little toe side missing portion 11c is formed by making a cut along the longitudinal direction of the first layer 11 from the toe side end of the first layer 11, 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, cutting in a gentle arc to the vicinity of the outer side of the footrest 10, and then cutting further along the longitudinal direction to the heel missing portion 11a.

[0031] The downwardly inclined portion 11f is formed between the heel-notched portion 11a and the little toe-side notched portion 11c on the side of the support portion 11b on the little toe side, and is inclined downward from the support portion 11b toward the side on the little toe side. Therefore, when the sole of the user's foot is placed on the footstool 10, the sole of the user's foot abuts on the support portion 11b, and the portion facing the heel-notched portion 11a, the portion facing the little toe-side notched portion 11c, and the downwardly inclined portion 11f are spaced apart from the sole. The abductor hallucis muscle of the user's sole faces the downwardly inclined portion 11f. However, when the user tilts the sole of the foot outward (toward the little toe), the sole can abut against the downwardly inclined surface of the downwardly inclined portion 11f.

[0032] 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 with a 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 with fine irregularities. This makes it less likely 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 forms the boundary with the heel-side missing portion 11a, is chamfered. In addition, the little toe-side edge of the upper layer 31, in other words, the edge that forms the boundary with the little toe-side missing portion 11c, is also chamfered.

[0033] 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 of the upper layer 31 that faces the heel side of the portion of the upper layer 31 that contacts the transverse head of the adductor hallucis muscle, with the upper layer 31 interposed between them. The lower layer inclined portion 32b gradually becomes thicker from the lower layer horizontal portion 32a toward the toe, and its upper surface slopes upward from the upper surface of the lower layer horizontal portion 32a.

[0034] According to the first embodiment, the height H from the upper 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 or more and 22 mm or less, and more preferably set in the range of 15 mm or more and 20 mm or less.

[0035] The upper layer 31 and the lower layer 32 are colored in different colors. It is desirable that the colors of the upper layer 31 and the lower layer 32 be colors that allow them 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 inclined surface of the downwardly inclined portion 11f is formed from the upper layer 31 to the lower layer 32.

[0036] The second layer 12 has a flat plate shape that conforms to the outer periphery of the foot, without the heel-missing portion 11a, the little toe-side missing portion 11c, or the upwardly inclined portion 11d formed in the first layer 11. The underside of the second layer 12 is formed into a rough surface with wavy irregularities, which makes the second layer 12 less likely to slip on the ground.

[0037] Foot stool 10 is constructed by bonding the underside of first layer 11 (i.e., the underside of lower layer 32) to the upper surface of second layer 12, and a step is formed between the upper surface of first layer 11 and the upper surface of second layer 12 at heel-missing portion 11a and little toe-side missing portion 11c. That is, in foot stool 10, heel-missing portion 11a forms a thin heel portion, and little toe-side missing portion 11c and downward-sloping portion 11f form a thin little toe-side portion. Furthermore, by bonding the underside of upper layer 31 to the upper surface of lower layer 32, upper layer 31 is fixed to the upper surface of the second layer in a deformed state so as to conform to the upper surface of lower layer 32. As a result, upper layer 31 slopes along lower layer horizontal portion 32a and lower layer inclined portion 32b of lower layer 32, forming horizontal portion 11e and upward-sloping portion 11d in first layer 11.

[0038] The base of the downward slope 11f is located slightly inward (toward the big toe) with respect to the outer edge of the upper surface of the second layer 12. That is, the heel-notched portion 11a and the little toe-side notched portion 11c are connected at the side on the little toe side. Therefore, when the user places the sole of their foot on the support portion 11b of the foot stool 10, the side on the little toe side of the user's sole is spaced apart from the foot stool 10.

[0039] 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 surface of the footrest 10 and is the part that is held between the big toe and index toe of the user's foot, and is located on the upwardly sloping 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 upper end of the front part 21 toward the side of the footrest 10 on the big toe side (hereinafter referred to as the inner side) and an outer side part 22b that extends toward the side on the little toe side (hereinafter referred to as the outer side).

[0040] The terminal ends of the medial and lateral cross cords 22a and 22b are fixed to the second layer 12. Specifically, the terminal end of the medial cross cord 22a is fixed to the end on the big toe side near the step between the upper surface of the first layer 11 and the upper surface of the second layer 12 at the heel-notched portion 11a. The terminal end of the lateral cross cord 22b is fixed to the end on the little toe side near the step between the upper surface of the first layer 11 and the upper surface of the second layer 12 at the heel-notched portion 11a. This reduces the large gap between the sole of the user's foot and the heel-notched portion 11a when the user walks in the footwear, making it easier to walk in the footwear 1.

[0041] Next, the state in which the user wears the footwear 1 will be described.

[0042] A user can put on the footwear 1 by putting the foot through the thong 20 and pinching the front thong 21 between the big toe and the index toe of the user's foot.

[0043] When a user is wearing footwear 1, little toe-side missing portion 11c faces the user's middle toe, ring toe, little toe, and their bases, the lateral head of the adductor hallucis muscle located closer to the heel than the bases, and the flexor digitorum brevis muscle on the lateral side of the arch. In other words, if the sole of the foot is divided into a toe side and a heel side near the arch, and the toe side is further divided into a big toe side (inner side) and a little toe side (outer side), the outer half of the toe side roughly faces little toe-side missing portion 11c. The entire user's heel faces heel-missing portion 11a. Further, downwardly sloping portion 11f is formed in the area on the little toe side (outer side) near the boundary between the arch and heel, and the abductor digitorum minimi muscle faces downwardly sloping portion 11f.

[0044] That is, when a user wears footwear 1, the entire side of the sole on the little toe side is raised, which makes the side of the sole on the little toe side prone to moving downward. As the lateral side of the user's sole moves downward, the user's knees tend to bend outward. As a result, the knees can be restored to their original position from being twisted inward.

[0045] Thus, according to the footwear 1 of the first embodiment, particularly when worn by a person wearing high-heel footwear such as high heels, the center of gravity can be moved backward, and the torsion inside the knee can be restored. Further, by restoring the torsion inside the knee, the expanded pelvis can be restored. The pelvis is connected to the spine through the sacrum, and by moving the center of gravity backward, the spine can be restored to its original S-shape. When the spine returns to a normal state, the position of the head comes along the line of the spine, the bones of the neck return from the forward-tilted state, and the straight neck is corrected. As a result, the distortion of the skeleton is restored, and the pain in the legs and neck can be reduced.

[0046] When having a straight neck, the thin fascia wrapping the skull is pushed upward, so that the facial muscles are relaxed, and the whole face looks slack. According to the footwear 1 of the first embodiment, by returning the neck bones from a straight neck to a normal state, the slackness of the face can be eliminated, and an effect of making the face look smaller can be expected.

[0047] Also, when the outer side of the user's sole moves downward, first, by abutting against the downward-inclined portion 11f, it is possible to restrict the outer side of the user's sole from moving downward more than necessary. Thereby, it becomes possible to make walking easier. The inclination angle x of the downward-inclined portion 11f can be set within the range of 0° < x ≤ 90°. However, if the inclination is too small, the movement amount of the outer side of the user's sole becomes small, and it becomes difficult to obtain the effect of restoring the torsion inside the knee. Conversely, if the inclination is too large, the footrest 10 is likely to shift with respect to the sole, and there is a possibility of making walking difficult. Therefore, it is desirable that the inclination of the downward-inclined portion 11f is within the range of 30° ≤ x ≤ 60°.

[0048] In addition, when the user walks while being conscious that the outer part of the sole where the little-finger-side missing portion 11c faces does not touch the ground, it becomes possible to correct the center of gravity of the user's leg inward. If the user has knock knees, it is also possible to narrow the distance between the user's knees.

[0049] Furthermore, when the user puts on the footwear 1, the inner lateral cord portion 22a of the thong 20 passes over the base of the user's big toe and the outer lateral cord portion 22b passes over the instep of the user's foot, making it difficult for the footwear 1 to come off the user's foot.

[0050] Furthermore, because the front part 21 is disposed on the upwardly inclined part 11d, the user's thumb, index finger and their bases come into contact with the inclined surface of the upwardly inclined part 11d, so that only the thumb, index finger and their bases on the sole of the user's foot are positioned higher than the upper surface of the horizontal part 11e.

[0051] In this way, because the big toe, index finger, and their bases are positioned higher than the rest of the user's sole, the heel tends to move downward, and the center of gravity tends to move backward, making it difficult for the user to lean forward. Even if the user leans forward over time due to a forward tilt, the big toe, index finger, and their bases rest on the upwardly inclined portion 11d, making it difficult for the user to lean forward. Even if the user leans forward, the spine can be returned to a position perpendicular to the ground. In this way, the user's posture can be corrected.

[0052] Furthermore, by making it difficult to bend forward, the time spent in a posture that places gravity on the face, such as a hunched posture, can be shortened. This reduces the accumulation of fluid in the face and the occurrence of swelling, resulting in a slimmer face. Furthermore, by making it difficult to bend forward and correcting a forward-leaning posture to a better posture, it is possible to free the eyeballs from pressing against the fascia, thereby relieving eye fatigue. In addition, correcting a forward-leaning posture to a better posture can have other effects, such as improving walking posture, making it easier to lift your feet, reducing shoulder stiffness, and improving blood flow to the back of the neck.

[0053] Furthermore, according to the first 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's line backward, while if it is too high, the spine's line may be moved backward more than necessary in normal posture. Therefore, if the height H is in the range of 7 mm to 22 mm as in the first embodiment, when the user leans forward and the spine's line tilts forward, the spine's line can be moved backward and corrected 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's line when the user leans forward and the spine's line tilts forward.

[0054] 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 upper surface of second layer 12. Users who tiptoe can correct their center of gravity backward by walking so that their heels touch the upper surface of second layer 12. In this way, footwear 1 can correct the walking posture of both heel-walkers and tiptoe-walkers.

[0055] Furthermore, because the step formed by heel-notched portion 11a is arc-shaped, it stimulates the area around the arch of the foot near the arc-shaped heel when walking. Furthermore, because the portion of first layer 11 between heel-notched portion 11a and little toe-side notched portion 11c is narrow, the user can stimulate the sides 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.

[0056] Furthermore, by adhesively fixing the lower surface of the upper layer 31 to the upper surface of the lower layer 32 while the upper layer 31 is deformed so as to conform to the lower layer inclined portion 32b, an upwardly inclined portion 11d is formed in the first layer 11. Therefore, by adhesively fixing the upper layer 31, whose surface (upper surface) has been processed to form anti-slip features such as unevenness, to the lower layer 32, it is possible to easily create the first layer 11 having anti-slip features such as unevenness formed on the surface (upper surface) of the upwardly inclined portion 11d.

[0057] Furthermore, since the upper layer 31 and the lower layer 32 are colored in different colors, when the footwear 1 is viewed from the side, the lower layer 32 becomes thicker toward the toe, giving the user a visual impression that the area on which the big toe is placed is higher.

[0058] [Second embodiment] Fig. 4 is a perspective view showing the appearance of footwear 2 in a second embodiment of the present invention. Fig. 5 is a plan view of Fig. 4. Fig. 6 is a side view of Fig. 4. Footwear 2 is a so-called beach sandal, and includes a footrest 10 and a thong 25. Note that Figs. 4 to 6 show footwear 2 to be worn on the left foot of a user, and since footwear 2 to be worn on the right foot is bilaterally symmetrical to footwear 2 to be worn on the left foot, detailed description of footwear 2 to be worn on the right foot will be omitted.

[0059] Footwear 2 in the second embodiment has a thong 25 attached to a footrest 10 instead of the thong 20 in footwear 1 in the second embodiment shown in FIGS.

[0060] Like thong 20, thong 25 is made of cloth or synthetic resin, and is composed of front thong 26 and side thong 27. Front thong 26 extends upward from the surface of footrest 10 and is the part that is held between the big toe and index toe of the user, and like thong 20, is located on the upwardly sloping portion 11d of first layer 11. Side thong 27 is made of a string- or band-like member made of cloth or synthetic resin, and extends from the upper end of front thong 26 as its base end toward the inside side of footrest 10.

[0061] The terminal end of the cross string 27 is fixed to the corner on the big toe side, on the heel-missing portion 11a side, of the first layer 11. In other words, the thong 25 is obtained by removing the outer cross string 22b from the thong 20 and placing the terminal end of the inner cross string 22a on the first layer 11.

[0062] According to the footwear 2 of the second embodiment configured as described above, similar to the footwear 1, when a user wears the footwear 2, the lateral side of the user's sole faces the little toe-side missing portion 11c, the downwardly sloping portion 11f, and the heel-missing portion 11a. At this time, the lateral side of the user's sole is prone to move downward, and since there is no lateral cord that is placed over the instep on the user's little toe side, the lateral side of the user's sole is prone to detaching from the first layer 11. Therefore, in order to maintain posture, the user tries to grip the first layer 11 with the arch near the arch of the sole, using the abductor digiti minimi muscles and the like. Wearing the footwear 2 encourages this gripping movement, which in turn leads to movements that normalize the user's skeletal structure.

[0063] Furthermore, there is only one horizontal string 27 that is placed over the instep on the big toe side, but its terminal end is located on the first layer 11 and is relatively short. This allows horizontal string 27 to be securely placed over the instep on the big toe side. This reduces the distance that footrest 10 separates from the sole of the user's foot when walking, making it possible to stabilize walking.

[0064] Although the embodiments of the present invention have been described above, the embodiments of the present invention are not limited to the above-described embodiments. For example, although the above-described embodiments have been described using beach sandals as an example, the present invention can also be applied to sandals. Furthermore, although the foot board is made of rubber or EVA urethane material, the material of the foot board is not limited to these. For example, the foot board may be made of wood.

[0065] In the embodiment of the present invention, the footrest 10 is formed in two layers, but it may be a single layer (single plate) as long as a thin-walled portion is formed in the portion of the footrest facing the outer half of the toe side of the sole of the user and the portion facing 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). [Explanation of symbols]

[0066] 1, 2 Footwear 10 footrests 11 1st layer 11a Missing heel 11b Toe 11c Missing part on the little finger side 11d Uphill section 11e Horizontal section 11th floor downhill section 12 2nd layer 20, 25 Thongs 21, 26 Maeobe 22, 27 Yokoobu 22a Medial lateral part 22b Lateral section 31 Upper layer 32 Lower Layer 32a Lower layer horizontal part 32b Lower layer slope

Claims

1. Footwear with a footrest on which the feet can be placed, The foot rest has a heel thin portion which is thinner at a portion facing the heel of the user, a little toe side thin portion which is thinner at a portion on the little toe side of the user, and a placing portion on which the sole of the user is placed, the placing portion being formed in a portion excluding the heel thin portion and the little toe side thin portion, The footwear is characterized in that the little toe side thin section is formed in a region facing at least the 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 abductor hallucis minimi muscle, and is connected to the heel thin section on the side of the little toe side.

2. Footwear according to claim 1, The footwear comprises a front strap part that is held between the big toe and the index toe and a side strap part that is placed on the instep, and further comprises a thong that is attached to the foot rest.

3. Footwear according to claim 2, The lateral cord portion has an outer lateral cord portion that is placed on the little toe side of the instep and an inner lateral cord portion that is placed on the big toe side of the instep, The outer lateral cord portion and the inner lateral cord portion extend from the front cord portion and have their ends attached to the thin heel portion.

4. Footwear according to claim 2, The footwear is characterized in that the side straps extend from the front straps to the big toe side of the instep, but not to the little toe side.

5. Footwear according to claim 4, Footwear characterized in that the end of the cross strap portion is attached to the placement portion.

6. Footwear according to any one of claims 1 to 5, Footwear characterized in that the thin-walled portion on the little toe side has an inclined portion that slopes downward from the placement portion toward the side portion on the little toe side in a region facing the abductor hallucis minimi muscle.

Images