CN117204644A

CN117204644A - Shoes with wheels

Info

Publication number: CN117204644A
Application number: CN202310576218.0A
Authority: CN
Inventors: 伊藤哲也
Original assignee: Individual
Current assignee: Individual
Priority date: 2022-06-10
Filing date: 2023-05-22
Publication date: 2023-12-12
Also published as: US20230397690A1; EP4311448A1; JP2023180918A; KR20230170565A; JP7166035B1

Abstract

The present invention provides footwear having a health-beneficial function. An article of footwear (1) comprising: an upper belt (30) composed of a front belt portion (31) which is held by the big toe and the food toe of the foot and a lateral belt portion (32) which is hung on the instep, and a sole (20) on which the upper belt (30) is mounted and on which the foot is placed, the sole (20) having a missing portion (20 c) missing on the toe side with respect to the outside of the front belt portion (31) and with respect to the heel placement area of the user, and the middle toe, the ring toe, the little toe, and the root portion thereof and the lateral portion of the foot adductor lateral portion of the short flexor of the little toe being opposed to the missing portion (20 c) of the foot in a state in which the user wears the shoe (1).

Description

Shoes with wheels

Technical Field

The present invention relates to open footwear, such as a walking and a sandal, below the ankle.

Background

Like a walking stick and a sandal, open footwear below the ankle is generally constructed by attaching a strap or upper to a flat sole in the shape of the sole of the foot. In addition, conventionally, a protrusion is provided at the sole to stimulate plantar acupoints when walking or to incline the sole laterally to correct the O-type leg, the X-type leg, etc., and a slipper or a sandal having a health promoting function has been popularized.

As a conventional technique, there is a technique described in patent document 1. Patent document 1 discloses a health care cooling mop in which the mounting positions of the front pad of an upper belt are set at two positions so as to clamp the toe, the toe is taken as the center, the big toe is a pair of three in the middle of the toe, the ring toe and the little toe, and the upper part stepped on by the toe is heightened by 2-5mm.

Prior art literature

Patent document 1: japanese patent application laid-open No. 3232282

Disclosure of Invention

Technical problem to be solved

In recent years, it has been desired that inexpensive footwear such as beach slippers also have a health-beneficial function. In particular, in order to make the O-leg less noticeable when wearing swimwear, for example, at sea, it is desirable to have a beach mop with the function of correcting the O-leg.

Technical proposal for solving the technical problems

In order to achieve the above object, the present utility model has the following structure.

(1) Footwear (e.g., footwear 1) comprising an upper strap (e.g., upper strap 30) composed of a front strap portion (e.g., front strap portion 31) that is clamped by the big toe and the food toe of the foot and a lateral strap portion (e.g., lateral strap portion 32) that is hung on the instep and a sole (e.g., sole 20) to which the upper strap is attached and on which the foot is placed,

The sole has a heel portion for placing a heel of a user and a missing portion (e.g., missing portion 20 c) missing from a portion of the toe side of the front strap portion opposite to the toe side of the heel portion,

the missing portion is opposed to at least a middle toe, a ring toe, a little toe, and a heel portion thereof of a foot of a user and a portion of a lateral head of adductor hallux of the foot located closer to a heel position with respect to the heel portion.

(2) Footwear (e.g., footwear 3) comprising an upper strap (e.g., upper strap 30) composed of a front strap portion (e.g., front strap portion 31) that is clamped by the big toe and the food toe of the foot, and a lateral strap portion (e.g., lateral strap portion 32) that is hung on the instep of the foot, and a sole (e.g., sole 20) to which the upper strap is attached and on which the foot is placed,

the sole includes a heel portion where a heel of a user is placed and a thin-walled portion (e.g., a portion of the missing portion 26a in the sole 25) where a portion of the thickness of the toe side of the heel portion is reduced with respect to the small toe side of the front band portion,

the thin-walled portion is opposed to at least a middle toe, a ring toe, a little toe, a heel portion thereof, and a portion of a lateral head of a adductor hallux muscle of a foot of a user located closer to a heel position than the heel portion, and is not opposed to the front band portion on a big toe side.

(3) Footwear according to (1), characterized in that:

the sole further comprises a heel missing part where part of the heel is missing.

(4) Footwear according to (2), characterized in that:

the sole has an upper layer structure and a lower layer structure,

the upper layer of one layer of the two-layer structure takes the shape of according to the periphery of the foot without a missing part,

the lower layer of the other layer of the two-layer structure comprises: a heel portion for placing a heel of a user and a missing portion missing from a portion of the little toe side of the front belt portion and from the toe side of the heel portion.

(5) Footwear according to (2), characterized in that:

the sole has an upper layer structure and a lower layer structure,

the lower layer of one layer of the two-layer structure takes the shape of according to the periphery of the foot without arranging a missing part,

the upper layer of the other layer of the two-layer structure comprises: a heel portion for placing a heel of a user and a missing portion missing from a portion of the little toe side of the front belt portion and from the toe side of the heel portion.

(6) A footwear according to (2) or (5), characterized in that,

According to (1) to (6), when the user walks while wearing the footwear of the present invention, the toe side and the outer side portion of the sole are separated from the ground, so that the weight of the user is concentrated on the inner side portion of the sole of the user. Thus, the center of gravity of the user's foot can be corrected to the inside, and if the user is an O-shaped leg, the distance between the user's knees can be narrowed. In this way, footwear with healthcare functions may be provided.

(7) Footwear characterized by comprising an upper strap (e.g., upper strap 30) composed of a front strap portion (e.g., front strap portion 31) that is held by the big toe and the index toe of the foot, and a lateral strap portion (e.g., lateral strap portion 32) that is hung on the instep, and a sole (e.g., sole 40) to which the upper strap is attached and on which the foot is placed,

the back of the sole has a recess (e.g., recess 40 c),

the concave part is opposite to at least the middle toe, the ring toe, the little toe and the root parts of the middle toe, the ring toe and the little toe of the foot of the user and the part of the transverse head of the adductor hallux muscle which is closer to the heel position relative to the root parts,

the bottom has flexibility.

(8) Footwear characterized by comprising an upper belt (e.g., upper belt 30) composed of a front belt portion (e.g., front belt portion 31) held by the big toe and the food toe of a foot, and a lateral belt portion (e.g., lateral belt portion 32) hung on the instep, and a sole (e.g., sole 50) to which the upper belt is attached and on which the foot is placed,

the sole has an upper layer structure and a lower layer structure,

the upper layer (e.g., first layer 51) of one of the two-layer structures has a first missing portion (e.g., missing portion 51 a) missing a portion opposite to the heel of the user and a second missing portion (e.g., missing portion 51 c) missing a portion on the little toe side with respect to the front belt portion and on the toe side with respect to the first missing portion,

The lower layer (e.g., second layer 52) of the other of the two-layer structure is made of a material having higher flexibility than the upper layer, and has a shape of to the outer circumference of the foot without providing the first and second missing portions in the upper layer,

the second missing portion is opposite to at least the middle toe, the ring toe, the little toe and the root portion thereof of the foot of the user and the portion of the adductor muscle lateral head of the foot at a position closer to the heel than the root portion,

the step portion formed by the upper surface of the upper layer and the upper surface of the lower layer in the second missing portion has an inclined surface (e.g., inclined surface 51 d).

(9) Footwear characterized by comprising a front belt portion (e.g., front belt portion 31) held by the thumb and the toe of a foot, and a lateral belt portion (e.g., lateral belt portion 3) hung on the instep

2) A composed upper strap (e.g., upper strap 30) and a sole (e.g., sole 60) to which the upper strap is mounted and which receives a foot,

the sole has an upper layer structure and a lower layer structure,

the upper layer (e.g., first layer 61) of one of the two-layer structures has a first missing portion (e.g., missing portion 61 a) missing a portion opposite to the heel of the user and a second missing portion (e.g., missing portion 61 c) missing a portion on the little toe side with respect to the front belt portion and on the toe side with respect to the first missing portion,

The lower layer (e.g., second layer 62) of the other of the two-layer structure has a shape of as to the outer circumference of the foot but is not provided with the first and second missing portions in the upper layer,

the stepped portions formed by the upper surfaces of the upper and lower layers and the toe-side end portions of the back surface of the sole in the second missing portion have inclined surfaces (e.g., inclined surfaces 61d, 61 e).

(10) Footwear characterized by comprising an upper belt (e.g., upper belt 30) composed of a front belt portion (e.g., front belt portion 31) held by the big toe and the food toe of a foot and a lateral belt portion (e.g., lateral belt portion 32) hung on the instep and a sole (e.g., sole 70) to which the upper belt is attached and on which the foot is placed,

the sole has a higher flexibility in the region (e.g., the missing portion 70 c) opposite the middle toe, the ring toe, the little toe, and their heel portions and the portion of the lateral head of the adductor hallux muscle of the foot located closer to the heel position than the heel portions than in the other regions (e.g., the soft sole 71).

(11) Footwear characterized by comprising an upper belt (e.g., upper belt 30) composed of a front belt portion (e.g., front belt portion 31) held by the big toe and the food toe of a foot and a lateral belt portion (e.g., lateral belt portion 32) hung on the instep and a sole (e.g., sole 80) to which the upper belt is attached and on which the foot is placed,

the sole having a first recess (e.g., heel recess 80 a) opposite the heel of the user and a second recess (e.g., lateral recess 80 c) opposite the small toe side relative to the front strap and the portion of the toe side relative to the first recess,

the second concave part is at least opposite to the middle toe, the ring toe, the little toe and the root parts of the middle toe, the ring toe and the little toe of the foot of the user and the part of the adductor muscle transverse head of the foot at the position closer to the heel relative to the root parts,

on the back surface of the toe-side end portion of the sole, a slope (e.g., slope 80 d) inclined toward the big toe side of the user is provided.

(12) Footwear characterized by comprising an upper belt (e.g., upper belt 30) composed of a front belt portion (e.g., front belt portion 31) held by the big toe and the food toe of a foot and a lateral belt portion (e.g., lateral belt portion 32) hung on the instep and a sole (e.g., sole 90) to which the upper belt is attached and on which the foot is placed,

The back of the sole has a recess (e.g., recess 90 a),

the concave part is at least opposite to the big toe, the food toe and the root parts thereof of the foot of a user through the bottom part of the concave part,

the bottom has flexibility.

(13) Footwear characterized by comprising a sole (e.g., sole 100) on which a foot is placed and a first strap member (e.g., hallux strap 33) arch-shaped to be inserted freely into the sole, and a second strap member (e.g., ankle strap 34) arch-shaped to be attached to the sole on the heel side relative to the first strap member to be inserted freely into the instep,

the sole has an upper layer structure and a lower layer structure,

an upper layer (e.g., first layer 101) of one of the two layers includes: a first missing portion (for example, missing portion 101 a) missing a portion opposite to the heel of the user and a second missing portion (for example, missing portion 101 c) missing a portion on the little toe side with respect to the first band member and on the toe side with respect to the first missing portion,

the lower layer of the other layer of the two-layer structure is made of a material with higher flexibility than the upper layer, and takes the shape of on the periphery of the foot without arranging the first missing part and the second missing part in the upper layer,

The second missing portion is opposed to at least a middle toe, a ring toe, a little toe, and a root portion thereof of a foot of the user and a portion of a lateral head of adductor hallux of the foot located closer to the heel position with respect to the root portion.

(14) Footwear characterized by comprising an upper strap (e.g., upper strap 30) composed of a front strap portion (e.g., front strap portion 31) that is held by the big toe and the food toe of the foot, and a lateral strap portion (e.g., lateral strap portion 32) that is hung on the instep, and a sole (e.g., sole 110) to which the upper strap is attached and on which the foot is placed,

the back of the sole has a first recess (e.g., recess 110 a) and a second recess (e.g., recess 110 b),

the first concave part is opposite to the heel of the user through the bottom of the first concave part,

the bottom of the second concave part is opposite to the big toe and the food toe of the foot of the user and the root parts thereof,

the bottoms of the first concave part and the second concave part are flexible.

(15) Footwear characterized by comprising an upper strap (e.g., upper strap 30) composed of a front strap portion (e.g., front strap portion 31) that is held by the big toe and the food toe of the foot and a lateral strap portion (e.g., lateral strap portion 32) that is hung on the instep and a sole (e.g., sole 120) to which the upper strap is attached and on which the foot is placed,

The sole has a gap portion (for example, a recess portion 121 c) extending from a center portion in a lateral thickness direction of a little toe side with respect to the front strap portion toward a big toe side,

the gap portion is opposed to at least a middle toe, a ring toe, a little toe, and a root portion thereof of a foot of a user and a portion of a lateral head of adductor hallux muscle in a position closer to a heel with respect to the root portion.

(16) Footwear characterized by comprising an upper strap (e.g., upper strap 30) composed of a front strap portion (e.g., front strap portion 31) that is held by the big toe and the food toe of the foot and a lateral strap portion (e.g., lateral strap portion 32) that is hung on the instep and a sole (e.g., sole 130) to which the upper strap is attached and on which the foot is placed,

the sole has an upper layer structure and a lower layer structure,

an upper layer (e.g., first layer 131) of one of the two-layer structures has a first block (e.g., first block 131 a) arranged with the front belt portion and a second block (e.g., second block 131 b) arranged with the terminal portions of the cross belt portion,

the lower layer (e.g., second layer 132) of the other of the two-layer structure is made of a material that is more flexible than the upper layer, and has a shape of to the outer circumference of the foot,

a first recess is formed between the first block and the second block, a second recess is formed opposite to the heel of the user on the heel side with respect to the second block,

The first depression is opposite at least the middle toe, the ring toe, the little toe, and their heel portions of the user's foot and the portion of the adductor lateral head of the foot proximal to the heel position relative to the heel portions.

(17) Footwear characterized by comprising a front strap portion (e.g., front strap portion 31) held by the thumb and the toe of a foot and a lateral strap portion (e.g., lateral strap portion 3) hung on the instep

2) A composed upper strap (e.g., upper strap 30) and a sole (e.g., sole 140) to which the upper strap is mounted and which receives a foot,

the sole has an upper layer structure and a lower layer structure,

the upper layer (e.g., first layer 141) of one of the two-layer structures has a first missing portion (e.g., missing portion 141 a) of a portion opposite to the heel of the user and a second missing portion (e.g., missing portion 141 c) of a portion on the little toe side with respect to the front band portion and on the toe side with respect to the first missing portion,

the lower layer (e.g., second layer 142) of the other of the two-layer structure is made of a material having higher flexibility than the upper layer, and has a shape of to the outer circumference of the foot without providing the first and second missing portions in the upper layer,

The second missing part is opposite to at least the middle toe, the ring toe, the little toe and the root parts of the middle toe, the ring toe and the little toe of the foot of the user and the part of the adductor muscle transverse head of the foot at the position closer to the heel relative to the root parts,

the back surface of the sole has inclined surfaces at the toe-side end and the heel-side end, respectively.

According to (7) to (11), (13) and (15) to (17), when the user walks while wearing the footwear of the present invention, the toe side and the outer side portion of the sole (the middle toe, the ring toe, the little toe, and the root portion thereof and the portion of the lateral head of the adductor hallux in the foot near the heel position with respect to the root portion) of the user's foot) are separated from the ground, and therefore the weight of the user is concentrated on the inner side portion of the user's sole. Thus, the center of gravity of the user's foot can be corrected to the inside, and if the user is an O-shaped leg, the distance between the user's knees can be narrowed. In this way, footwear with healthcare functions may be provided.

(18) Footwear characterized by comprising a front strap portion (e.g., front strap portion 31) held by the thumb and the toe of a foot and a lateral strap portion (e.g., lateral strap portion 3) hung on the instep

2) A composed upper strap (e.g., upper strap 30) and a sole (e.g., sole 150) to which the upper strap is mounted and which receives a foot,

The sole is made of a flat plate member, and has a missing portion (for example, missing portion 150 a) missing from a portion opposite to the heel of the user.

(19) Footwear characterized by comprising an upper strap (e.g., upper strap 30) composed of a front strap portion (e.g., front strap portion 31) that is held by the big toe and the food toe of the foot, and a lateral strap portion (e.g., lateral strap portion 32) that is hung on the instep, and a sole (e.g., sole 160) to which the upper strap is attached and on which the foot is placed,

the sole, made of a flat plate member, has a recess (e.g., recess 161 a) at a portion opposite to the heel of the user,

the toe-side end of the back surface of the sole has inclined surfaces (e.g., inclined surfaces 161b, 162 a).

According to (18) and (19), since the lower portion of the heel becomes a space, the user takes a posture of standing on the tiptoe and walking, and by walking with the footwear, the user can naturally exercise the muscles from the rear side of the thigh to the hip. In this way, footwear with healthcare functions may be provided.

In particular, according to (8), (9), (17) and (19), since the rear surface of the sole has the inclined surfaces at the toe side end and the heel side end, the inclined surface of the rear surface of the toe portion contacts the ground during walking, and the movement of the center of gravity during walking becomes smooth, so that the user can walk more easily.

In particular, according to (11), since the rear surface of the toe-side end portion of the sole has the inclined surface (for example, the inclined surface 80 d) inclined toward the user's big toe side, the user's big toe and middle toe and their root portions are easily inclined toward the medial side. Thus, the center of gravity of the user's foot can be corrected to the inside, and if the user is an O-leg, the distance between the user's knees can be narrowed.

Effects of the invention

According to the present invention, footwear having a health function can be provided.

Drawings

Fig. 1 is a perspective view showing an external appearance of a footwear 1 according to a first embodiment of the present invention.

Fig. 2 is a front view of fig. 1.

Fig. 3 is a perspective view showing an external appearance of footwear 2 according to a modification of the first embodiment of the present invention.

Fig. 4 is a perspective view showing the external appearance of footwear 3 according to a second embodiment of the present invention.

Fig. 5 is a front view of fig. 4.

Fig. 6 is a perspective view showing an external appearance of footwear 3 according to a modification of the second embodiment of the present invention.

Fig. 7A is a plan view showing an external appearance of footwear 4 according to a third embodiment of the present invention.

Fig. 7B is a plan view showing the back side of fig. 7A.

Fig. 7C is a side view of fig. 7A from the small toe side.

Fig. 8A is a plan view showing the external appearance of footwear 5 according to a fourth embodiment of the present invention.

Fig. 8B is a plan view showing the back side of fig. 8A.

Fig. 8C is a side view from the little toe side of fig. 8A.

Fig. 8D is a front view of fig. 8A.

Fig. 9A is a plan view showing the external appearance of footwear 6 according to a fifth embodiment of the present invention.

Fig. 9B is a plan view showing the back side of fig. 9A.

Fig. 9C is a side view from the little toe side of fig. 9A.

Fig. 9D is a front view of fig. 9A.

Fig. 10A is a plan view showing the external appearance of footwear 7 according to a sixth embodiment of the present invention.

Fig. 10B is a plan view showing the back side of fig. 10A.

Fig. 10C is a side view from the little toe side of fig. 10A.

Fig. 11A is a plan view showing the appearance of footwear 8 according to a seventh embodiment of the present invention.

Fig. 11B is a plan view showing the back side of fig. 11A.

Fig. 11C is a side view seen from the little toe side of fig. 11A.

Fig. 11D is a front view of fig. 11A.

Fig. 12A is a plan view showing the external appearance of footwear 9 according to an eighth embodiment of the present invention.

Fig. 12B is a plan view showing the back side of fig. 12A.

Fig. 12C is a side view from the little toe side of fig. 12A.

Fig. 12D is a front view of fig. 12A.

Fig. 13A is a plan view showing the appearance of footwear 10 according to a ninth embodiment of the present invention.

Fig. 13B is a plan view showing the back side of fig. 13A.

Fig. 13C is a side view from the little toe side of fig. 13A.

Fig. 13D is a front view of fig. 13A.

Fig. 14A is a plan view showing the appearance of footwear 11 according to a tenth embodiment of the present invention.

Fig. 14B is a plan view showing the back surface side of fig. 14A.

Fig. 14C is a side view seen from the little toe side of fig. 14A.

Fig. 14D is a front view of fig. 14A.

Fig. 15A is a plan view showing an external appearance of footwear 12 according to an eleventh embodiment of the present invention.

Fig. 15B is a plan view showing the back surface side of fig. 15A.

Fig. 15C is a side view seen from the little toe side of fig. 15A.

Fig. 16A is a plan view showing an external appearance of footwear 13 according to a twelfth embodiment of the present invention.

Fig. 16B is a plan view showing the back surface side of fig. 16A.

Fig. 16C is a side view seen from the little toe side of fig. 16A.

Fig. 16D is a front view of fig. 16A.

Fig. 17A is a plan view showing the appearance of footwear 14 according to a thirteenth embodiment of the present invention.

Fig. 17B is a plan view showing the back surface side of fig. 17A.

Fig. 17C is a side view seen from the little toe side of fig. 17A.

Fig. 17D is a front view of fig. 17A.

Fig. 18A is a plan view showing an external appearance of a shoe 15 according to a fourteenth embodiment of the present invention.

Fig. 18B is a plan view showing the back surface side of fig. 18A.

Fig. 18C is a side view seen from the little toe side of fig. 18A.

Fig. 19A is a plan view showing an external appearance of a shoe 16 according to a fifteenth embodiment of the present invention.

Fig. 19B is a plan view showing the back surface side of fig. 19A.

Fig. 19C is a side view seen from the little toe side of fig. 19A.

Fig. 19D is a front view of fig. 19A.

Detailed Description

Embodiments of the present invention will be described in detail below with reference to the accompanying drawings.

[ first embodiment ]

Fig. 1 is a perspective view showing an external appearance of a footwear 1 according to a first embodiment of the present invention. Fig. 2 is a front view of fig. 1. The footwear 1 is a so-called beach mop comprising a sole 20 and an upper strap 30. In addition, fig. 1 and 2 show footwear 1 worn by a left foot of a user, and since footwear 1 worn by a right foot is bilaterally symmetrical to footwear 1 worn by a left foot, a detailed description thereof will be omitted with respect to footwear 1 worn by a right foot.

The sole 20 is made of a rubber material, an EVA urethane material, or the like, and is a plate-like member having a shape of to the outer periphery of the foot, and includes a heel portion 20a for placing the heel of the user and a toe portion 20b for placing the toe of the user.

The upper belt 30 is made of cloth or synthetic resin, and is composed of a front belt portion 31 and a cross belt portion 32. The front band 31 extends upward from the plate surface of the sole 20 and has a portion that is held between the thumb and the toe of the user, and is provided at the toe portion 20b of the sole 20. The lateral band portion 32 is composed of a band-like or band-like member made of cloth or synthetic resin, and the front band portion 31 is divided into two portions, an inner lateral band portion 32a extending toward a big toe side portion (hereinafter, medial side portion) of the sole 20 and an outer lateral band portion 32b extending toward a small toe side portion (hereinafter, lateral side portion) at the base end. The terminal ends of the inner and outer belt portions 32a, 32b are fixed to both side portions of the plantar arch region of the sole 20, respectively.

The sole 20 further includes a missing portion 20c located on the little toe side relative to the front strap portion 31. The missing portion 20c is formed by cutting a portion slightly closer to the little toe than the front belt portion 31 from the toe-side end portion of the sole 20 in the sole longitudinal direction, and by cutting a portion slightly closer to the toe than the terminal end portion of the outer belt portion 32b until the outer side portion of the sole 20 has a gentle arc shape.

Next, a state in which the user wears the footwear 1 will be described.

The footwear 1 thus constructed is worn by passing the user's foot through the upper strap 30 and sandwiching the front strap portion 31 between the big toe and the index toe of the user's foot. At this time, the inner belt portion 32a passes through the base of the thumb of the user, and the outer belt portion 32b passes through the instep of the user, so that the footwear 1 becomes difficult to be detached from the foot of the user.

In a state where the user wears the footwear 1, the middle toe, the ring toe, the little toe, and their heel parts and the part of the lateral head of the adductor hallux and the side part of the plantar arch of the short flexor hallux are opposed to the missing portion 20c of the foot of the user, which is located closer to the heel position than the heel parts. That is, when the sole is divided into two portions of the toe side and the heel side in the vicinity of the plantar arch, wherein the toe side is further divided into the big toe side (medial side) and the small toe side (lateral side), a portion of the lateral half of the toe side is substantially opposite to the missing portion 20 c.

Therefore, when the user walks while wearing the footwear 1, the outer half of the toe side of the sole is separated from the ground, and thus the weight of the user is concentrated on the inner side of the sole of the user. Further, when standing or walking, the user may consciously keep the outer portion of the sole opposite to the missing portion 20c from touching the ground. Thus, the center of gravity of the user's foot can be corrected to the inside, and if the user is an O-shaped leg, the distance between the user's knees can be narrowed.

According to the present embodiment configured as described above, the weight of the user is concentrated on the inner side portion of the sole of the foot by the user wearing the shoe, and therefore, the center of gravity of the user's foot can be corrected inward, and the distance between the knees of the user can be narrowed. Thus, the user can walk without worrying about the O-leg when changing the swimsuit at sea. In addition, according to the present embodiment, when the release paste (Speel paste r) is applied to the corn growing on the outer side of the sole, the portion to which the release paste is applied can be separated from the ground by putting on the footwear 1, and therefore, an effect of reducing the displacement or peeling of the release paste during walking can be expected.

[ modification of the first embodiment ]

Fig. 3 is a perspective view showing an external appearance of footwear 2 according to a modification of the first embodiment of the present invention. In the footwear 2 according to the modification of the first embodiment, a missing portion 20d, in which a heel portion is missing, is formed in the sole 20 of the footwear 1 according to the first embodiment shown in fig. 1. The missing portion 20d may be referred to as a heel missing portion.

According to the modification of the first embodiment configured as described above, since the footwear 2 has the missing portion 20d, the user takes a posture of standing on the foot and walking on the tip, and by wearing the footwear 2 to walk, the muscles from the rear side of the thigh to the hip can be naturally exercised. Further, since the footwear 2 has the missing portion 20c, the center of gravity of the user's foot can be corrected to the inside as described above, and if the user is an O-leg, the distance between the user's knees can be narrowed.

Fig. 4 is a perspective view showing the external appearance of footwear 3 according to a second embodiment of the present invention. Fig. 5 is a front view of fig. 4. The same members or members having the same functions as those of the footwear 1 shown in fig. 1 and 2 are denoted by the same reference numerals, and detailed description thereof will be omitted.

Footwear 3 includes a sole 25 and an upper strap 30. Footwear 3 differs from footwear 1 in the first embodiment in that sole 20 in the first embodiment is sole 25.

Sole 25 is a two-layer structure of a first layer 26 and a second layer 27. The first layer 26 has a missing portion 26a. The first layer 26 has the same shape or a different thickness from the sole 20 of the footwear 1 according to the first embodiment except for chamfering the corners of the toes, and the missing portion 26a is formed at the same position as the missing portion 20c of the sole 20 of the footwear 1.

The second layer 27 takes the shape of to the outer circumference of the foot without forming the missing portion 26a in the first layer 26. The sole 25 is formed by bonding the lower surface of the first layer 26 to the upper surface of the second layer 27, and forms a step at the portion of the missing portion 26a.

Footwear 3 is identical to footwear 1 of the first embodiment by attaching upper strap 30 to sole 25.

When the user wears the footwear 3, the outer portion of the toe side of the user's sole is separated based on the amount of step formed by the missing portion 26a and is opposed to the upper surface of the second layer 27.

Accordingly, in the footwear of the second embodiment, similarly to the footwear of the first embodiment, when the user wears the footwear 1 upright, the weight of the user is concentrated on the medial side portion of the sole of the user. Thus, the center of gravity of the user's foot can be corrected to the inside, and if the user is an O-shaped leg, the distance between the user's knees can be narrowed. Further, since the underside of the missing portion 26a is covered by the second layer 27, the sole does not directly contact the sand of the beach when the footwear 3 is used on the beach.

Modification of the second embodiment

In the footwear 3 of the second embodiment, the first layer 26 and the second layer 27 of the sole 25 may be exchanged up and down such that the second layer 27 is an upper layer and the first layer 26 is a lower layer.

The modified example of the second embodiment thus constructed also has the same effects as those of the footwear 3 of the second embodiment.

In the footwear 3 according to the second embodiment, the heel portion of the sole 25 may be omitted, as in the footwear 2 according to the modification of the first embodiment. This allows the user to take a posture of standing on his tiptoe and walking, and naturally exercises the muscles of the lower leg, from the rear side of the thigh to the buttocks. In the example shown in fig. 3, the heel portion is missing in an arc shape, but may be missing in a straight line shape as shown in fig. 3.

As shown in fig. 3 and 6, the second layer 27 of the footwear 3 according to the second embodiment may be bonded to the lower surface of the footwear in which the heel portion is missing in the shape of an arc, thereby forming a two-layer structure. Thereby, the heel can be prevented from directly contacting sand on the beach.

In the second embodiment and the modification thereof, the sole 25 is formed in two layers, but may be formed in one layer (single plate), so long as a thin portion with a reduced plate thickness is formed at a portion of the sole facing the outer portion of the sole of the user's foot.

[ third embodiment ]

Fig. 7A is a plan view showing an external appearance of footwear 4 according to a third embodiment of the present invention. Fig. 7B is a plan view showing the back surface of fig. 7A. Fig. 7C is a side view from the little toe side of fig. 7A. The footwear 4 is a so-called beach mop, comprising a sole 40 and an upper strap 30. In addition, fig. 7A shows the footwear 4 worn on the left foot of the user, and the footwear 4 worn on the right foot is bilaterally symmetrical with respect to the footwear 4 worn on the left foot, so that a detailed description thereof will be omitted. The same members or members having the same functions as those of the footwear 1 shown in fig. 1 and 2 are denoted by the same reference numerals, and detailed description thereof will be omitted.

The sole 40 is made of a rubber material, an EVA urethane material, or the like, and is a plate-like member having a shape of to the outer periphery of the foot, and includes a heel portion 40a for placing the heel of the user and a toe portion 40b for placing the toe of the user.

The front strap portion 31 of the upper strap 30 extends upward from the plate surface of the sole 40, is sandwiched between the thumb and the toe of the user, and is provided at the toe portion 40b of the sole 40. The lateral band portion 32 is divided into an inner lateral band portion 32a extending toward a big toe side portion (hereinafter, medial side portion) of the sole 40 and an outer lateral band portion 32b extending toward a small toe side portion (hereinafter, lateral side portion) with the front band portion 31 as a base end. The terminal ends of the inner and outer belt portions 32a, 32b are fixed to both side portions of the plantar arch region of the sole 40, respectively.

The sole 40, as shown in fig. 7B and 7C, also includes a recess 40C on the little toe side relative to the front strap portion 31 on the back side. The wall surface of the recess 40c extends in a gentle arc from the toe-side end of the sole 40 toward the longitudinal direction of the sole 40, through a portion slightly closer to the little toe than the front belt portion 31, and through a portion slightly closer to the toe than the terminal end of the outer lateral belt portion 32b, to the outer lateral side of the sole 40. The outer peripheral portion of the concave portion 40c is open. In other words, the footwear 4 according to the third embodiment is configured such that, in the footwear 1 according to the first embodiment shown in fig. 1, the upper portion of the missing portion 2 is covered by extending in a plate shape from the upper portion to the outer side portion of the missing portion 20 c. Since the bottom of the concave portion 40c is thin, it has flexibility in the up-down direction.

In a state where the user wears the footwear 4, the middle toe, the ring toe, the little toe, and their heel parts and the part of the lateral head of the adductor hallux and the side part of the plantar arch of the short flexor hallux are opposed to the missing portion 40c of the foot of the user, which is located closer to the heel position than the heel parts. That is, the sole is divided into two portions, namely, an toe side and a heel side in the vicinity of the plantar arch, wherein when the toe side is further divided into a medial side (big toe side) and a lateral side (little toe side), the portion of the lateral half of the toe side is substantially opposed to the over-concave portion 40c through the bottom of the concave portion 40 c.

Therefore, when the user walks wearing the footwear 4, the back surface of the outer half of the toe side of the sole is separated from the ground, that is, the bottom surface of the concave portion 40c is separated from the ground. Therefore, walking becomes unstable. In order to maintain walking balance, the user concentrates weight on the medial side of the user's sole. In addition, when the user stands up or walks, the bottom surface of the concave portion 40c is kept from touching the ground intentionally. Thus, the center of gravity of the user's foot can be corrected to the inside, and if the user is an O-shaped leg, the distance between the user's knees can be narrowed.

According to the third embodiment thus constructed, while the same effects as those of the first embodiment can be expected, it is possible to prevent the sole from being stained or the projections from being stepped on directly when the footwear 4 is used.

[ fourth embodiment ]

Fig. 8A is a plan view showing the external appearance of footwear 5 according to a fourth embodiment of the present invention. Fig. 8B is a plan view showing the back surface of fig. 8A. Fig. 8C is a side view from the little toe side of fig. 8A. Fig. 8D is a front view of fig. 8A. The footwear 5 is a so-called beach mop, comprising a sole 50 and an upper strap 30. In addition, fig. 8A shows the footwear 5 worn on the left foot of the user, and the footwear 5 worn on the right foot is bilaterally symmetrical with respect to the footwear 5 worn on the left foot, so a detailed description thereof will be omitted with respect to the footwear 5 worn on the right foot. The same members as those of the footwear 1 shown in fig. 1 and 2, or members having the same functions, are denoted by the same reference numerals, and detailed description thereof will be omitted.

Footwear 5 differs from footwear 1 in the first embodiment in that sole 20 in the first embodiment is sole 50.

The sole 50 is made of a rubber material, an EVA urethane material, or the like, and has a two-layer structure of a first layer 51 and a second layer 52 as shown in fig. 8C and 8D. The first layer 51 includes: the missing portion 51a of the heel portion of the user, the toe portion 51b of the toe of the user, and the missing portion 51c of the middle toe, the ring toe, the little toe, and the vicinity of the heel portion of the user. Further, as shown in fig. 8A and 8D, a slope 51D inclined downward is formed at an edge portion of the missing portion 51c of the first layer 51.

The missing portion 51c is formed by cutting a portion slightly closer to the small hallux than the front belt portion 31 from the toe-side end portion of the first layer 51 in the longitudinal direction of the sole 50, and by cutting a portion slightly closer to the toe than the terminal end portion of the outer lateral belt portion 32b until the outer side portion of the sole 40 has a gentle arc shape.

The missing portions 51a and 51c of the first layer 51 are not formed in the second layer 52, and are shaped to the outer periphery of the foot as shown in fig. 8B. The sole 50 is formed by bonding the lower surface of the first layer 51 to the upper surface of the second layer 52, and steps are formed in the portions of the missing portions 51a, 51c by the upper surface of the first layer 51 and the upper surface of the second layer 52. A slope 51d is formed at the step portion. The second layer 52 is made of a material having higher flexibility than the first layer 51.

The footwear 5 is completed by attaching the upper strap 30 to the sole 50, similarly to the footwear 1 of the first embodiment.

When the user wears the footwear 5, the heel portion of the user's sole is opposed to the missing portion 51a, and the middle toe, the ring toe, the little toe, and their heel portions and the portion of the foot's hallux adductor lateral portion of the plantar arch of the little toe flexor located closer to the heel than the heel portions are opposed to the missing portion 51 c. The heel and toe side outer portions of the user's sole are separated based on the amount of steps formed by the missing portions 51a, 51c and are opposed to the upper surface of the second layer 52.

The footwear 5 according to the fourth embodiment thus constructed can obtain the same effects as those of the footwear 1 according to the first embodiment. Further, by providing the missing portion 51, the user is put in a standing on the tiptoe walking posture, and naturally exercises the muscles of the lower leg and the hip from the rear side of the thigh. Further, the edge portion of the missing portion 51c is formed with a slope 51d inclined downward toward the upper surface of the second layer 52, and therefore, for example, when the user receives a lateral impact such as at the time of collision with a person, the slope 51d abuts against the sole of the user. Thus, the user can maintain balance better. Further, since the second layer 52 is made of a soft high material, the second layer 52 is elastically deformed greatly when the sole of the foot contacts the second layer 52. This results in unstable balance of the user, and the weight is concentrated on the inner side of the sole of the user in order to maintain a stable state. In addition, at least a second layer 52 is present between the ground and the sole of the foot, so that the sole of the foot is prevented from becoming dirty or from directly stepping on the projections when the footwear 5 is used.

[ fifth embodiment ]

Fig. 9A is a plan view showing the external appearance of footwear 6 according to a fifth embodiment of the present invention. Fig. 9B is a plan view showing the back side of fig. 9A. Fig. 9C is a side view from the little toe side of fig. 9A. Fig. 9D is a front view of fig. 9A. The footwear 6 is a so-called beach mop, comprising a sole 60 and an upper strap 30. In addition, fig. 9A shows the footwear 6 worn by the left foot of the user, and the footwear 6 worn by the right foot is bilaterally symmetrical to the footwear 6 worn by the left foot, so that a detailed description thereof will be omitted with respect to the footwear 6 worn by the right foot. The same members or members having the same functions as those of the footwear 1 shown in fig. 1 and 2 are denoted by the same reference numerals, and detailed description thereof will be omitted.

Footwear 6 differs from footwear 1 in the first embodiment in that sole 20 in the first embodiment is sole 60.

The sole 60, as shown in fig. 9C and 9D, is a two-layer structure of a first layer 61 and a second layer 62. The first layer 61 includes: the missing portion 61a where the heel portion of the user is missing, the toe portion 61b where the toe of the user is placed, and the missing portion 61c where the middle toe, the ring toe, the little toe, and the vicinity of their root portions of the user's foot are missing. A slope 61d inclined downward is formed at an edge portion of the missing portion 61c of the first layer 61. Further, on the sole side of the toe portion of the first layer 61, a slope 61e inclined upward toward the toe side is formed.

As shown in fig. 9B, the second layer 62 has a shape to the outer periphery of the foot without forming the missing portions 61a and 61c of the first layer 61. The second layer 62 has the same hardness as the first layer 61. The rear surface side of the toe portion of the second layer 62 is formed with a slope 62a inclined upward toward the toe side. The sole 60 is formed by bonding the lower surface of the first layer 61 to the upper surface of the second layer 62. Thereby, steps are formed in the portions of the missing portions 61a, 61c from the upper surface of the first layer 61 and the upper surface of the second layer 62. A slope 61d is formed at the step portion. Further, by overlapping a portion of the inclined surface 61e of the first layer 61 and a portion of the inclined surface 62a of the second layer 62, an inclined surface inclined upward toward the toe side is formed on the rear surface side of the toe portion of the sole 60.

Footwear 6, like footwear 1 of the first embodiment, is completed by attaching upper strap 30 to sole 60.

When the user wears the footwear 6, the heel portion of the user's sole and the outer portion of the toe side are separated based on the amount of step formed by the missing portions 61a, 61c and are opposed to the upper surface of the second layer 62. In other words, the footwear 6 according to the fifth embodiment of the present invention, like the footwear 5 according to the fourth embodiment, is formed with a slope inclined upward toward the toe side on the rear side of the toe, and the first layer 51 and the second layer 52 are made of the same material or a material having the same hardness.

The footwear 6 according to the fifth embodiment thus constructed has the same effects as the footwear 4 according to the fourth embodiment. Further, since the inclined surface is formed on the rear surface side of the toe portion, the inclined surface on the rear surface side of the toe portion is brought into contact with the ground during walking, and thus the movement of the center of gravity during walking becomes smooth, and the user can walk more easily.

[ sixth embodiment ]

Fig. 10A is a plan view showing the external appearance of footwear 7 according to a sixth embodiment of the present invention. Fig. 10B is a plan view showing the back surface of fig. 10A. Fig. 10C is a side view from the little toe side of fig. 10A. The footwear 7 is a so-called beach mop comprising a sole 70 and a soft bottom 71 and an upper strap 30. In addition, fig. 10A shows the footwear 7 worn on the left foot of the user, and the footwear 7 worn on the right foot is bilaterally symmetrical with respect to the footwear 7 worn on the left foot, so that a detailed description thereof is omitted with respect to the footwear 7 worn on the right foot. The same members as those of the footwear 1 shown in fig. 1 and 2, or members having the same functions, are denoted by the same reference numerals, and detailed description thereof will be omitted.

The sole 70 is made of a rubber material, an EVA urethane material, or the like, and is a plate-like member having a shape corresponding to the outer periphery of the foot of , and includes a heel portion 70a for placing the heel of the user and a toe portion 70b for placing the toe of the user.

The sole 70, as shown in fig. 10B, further includes a missing portion 70c located on the little toe side with respect to the front belt portion 31. The missing portion 70c is formed by cutting a portion slightly closer to the hallux than the front belt portion 31 from the toe-side end portion of the sole 70 in the longitudinal direction of the sole 70, and by cutting a portion slightly closer to the toe than the terminal end portion of the outer belt portion 32b until the outer side portion of the sole 70 has a gentle arc shape.

The soft sole 71 is made of a soft member having higher flexibility than the sole 70, and is attached to the missing portion 70c of the sole 70 and fixed thereto. By securing the flexible sole 71 to the sole 70, a foot-shaped plate is constructed. By disposing the soft sole 71 on the missing portion 70c of the sole 70, a foot-shaped plate-like member is constituted.

Then, by fixing the soft sole 71 to the missing portion 70c of the sole 70, the nose band 30 is attached to the sole 70 in the same manner as the sole 20 of the footwear 1 in the first embodiment, thereby constructing the footwear 7.

When the user wears the footwear 7, the middle toe, the ring toe, the little hallux and their heel parts of the user's foot and the portion of the lateral head of the adductor hallux and the lateral portion of the plantar arch of the short flexor hallux, which are located closer to the heel with respect to the heel part, are opposite to the soft bottom 71.

According to the sixth embodiment configured as described above, when the user walks wearing the footwear 7, the outer half of the sole on the toe side is slightly placed on the soft sole 71, and the soft sole 71 is greatly submerged. Therefore, walking becomes unstable. In order to maintain walking balance, the user concentrates weight on the medial side of the user's sole. In addition, the user may consciously avoid stepping on the soft bottom 71 when standing upright or walking. Thus, the center of gravity of the user's foot can be corrected to the inside, and if the user is an O-shaped leg, the distance between the user's knees can be narrowed. Further, by fixing the soft sole 71 to the missing portion 51a, the sole can be prevented from becoming dirty or stepping on the projections.

[ seventh embodiment ]

Fig. 11A is a plan view showing the appearance of footwear 8 according to a seventh embodiment of the present invention. Fig. 11B is a plan view showing the back side of fig. 11A. Fig. 11C is a side view seen from the little toe side of fig. 11A. Fig. 11D is a front view of fig. 11A. The footwear 8 is a so-called beach mop, comprising a sole 80 and an upper strap 30. In addition, fig. 11A shows the footwear 8 worn on the left foot of the user, and the footwear 8 worn on the right foot is bilaterally symmetrical with respect to the footwear 8 worn on the left foot, so that a detailed description thereof is omitted with respect to the footwear 8 worn on the right foot of the user. The same members as those of the footwear 1 shown in fig. 1 and 2, or members having the same functions, are denoted by the same reference numerals, and detailed description thereof will be omitted.

The sole 80 is made of a rubber material, an EVA urethane material, or the like, and is a flat plate-like member having a shape of on the outer periphery of the foot, and includes a heel portion 80a for placing the heel of a user, a toe portion 80B for placing the toe of the user, and inclined surfaces 80D formed on the tip portion of the back surface as shown in fig. 11B to 11D, along with the middle toe, the ring toe, the little toe, and their root portions and the opposite outer concave portions 80c of the user.

Upper strap 30 is secured to toe portion 80b. The heel recess 80a, the lateral recess 80c, and the inclined surface 80d of the sole 80 are formed by cutting a plate-shaped member.

The bottom surfaces of the heel recess 80a and the lateral recess 80c are lower than the upper surface of the toe portion 80b, and steps are formed by the upper surface of the toe portion 80b and the bottom surfaces of the heel recess 80a and the lateral recess 80 c. As shown in fig. 11A, the wall surface of the heel recess 80a is formed in an arc shape bulging toward the toe side, and the outer peripheral portion of the heel recess 80a is open. The wall surface of the outer concave portion 80c extends from the toe-side end portion of the sole 80 toward the longitudinal direction of the sole 80, through a portion slightly closer to the little toe than the front belt portion 31, and through a portion slightly closer to the toe than the terminal end portion of the outer lateral thread portion 32b, so as to have a gentle arc shape reaching the outer side portion of the sole 80. The outer peripheral portion of the outer concave portion 80c is open. Further, as shown in fig. 11B to 11D, the slope 80D gradually slopes toward the big toe side of the user from the boundary region between the toe portion 80B and the outside concave depression 80 c.

When the user wears the footwear 8, the middle toe, the ring toe, the little toe, and the root portions thereof and the portion of the lateral head of the adductor hallux and the lateral portion of the plantar arch of the short flexor hallux are opposed to the lateral concave portion 80c of the foot of the user, which is located closer to the heel position than the root portions. That is, the sole is divided into 2 portions in the vicinity of the plantar arch, wherein when the toe side is further divided into the medial side (big toe side) and the lateral side (little toe side), the lateral half portion of the toe side is substantially opposed to the lateral concave portion 80 c. In addition, the heel of the user is opposite the heel recess 80.

When the user walks wearing the footwear 8, the back surface of the outer half of the toe side of the sole, that is, the bottom surface of the outer concave portion 80c is separated from the ground. Therefore, walking becomes unstable. In order to maintain walking balance, the user concentrates weight on the medial side of the user's sole. In addition, the bottom surface of the outer concave portion 80c is intentionally kept from touching the ground when the user is standing or walking. Thus, the center of gravity of the user's foot can be corrected to the inside, and if the user is an O-shaped leg, the distance between the user's knees can be narrowed. Further, by providing the heel recess 80a, the user is in a standing on the tiptoe and walking posture, and by wearing the footwear 7 to walk, the muscles of the lower leg and the thigh to the buttocks can be naturally exercised. Further, since the inclined surface 80d is formed, the thumb of the user is easily inclined inward during walking, and therefore, the center of gravity of the foot of the user can be corrected inward.

According to the seventh embodiment thus constructed, it is possible to prevent the foot from being stained or directly stepped on the projections when the footwear 8 is used, while the same effects as in the first embodiment are expected.

The sole 80 of the footwear 8 is formed of a single plate-like member, but may be formed in a two-layer structure and stepped as in the footwear 6 of the fifth embodiment.

[ eighth embodiment ]

Fig. 12A is a plan view showing the external appearance of footwear 9 according to an eighth embodiment of the present invention. Fig. 12B is a plan view showing the back side of fig. 12A. Fig. 12C is a side view from the little toe side of fig. 12A. Fig. 12D is a front view of fig. 12A. The footwear 9 is a so-called beach mop, comprising a sole 90 and an upper strap 30. In addition, fig. 12A shows the footwear 9 worn on the left foot of the user, and the footwear 9 worn on the right foot is bilaterally symmetrical with respect to the footwear 9 worn on the left foot, so that the footwear 9 worn on the right foot will not be described in detail. The same members as those of the footwear 1 shown in fig. 1 and 2, or members having the same functions, are denoted by the same reference numerals, and detailed description thereof will be omitted.

The sole 90 is made of a rubber material, an EVA urethane material, or the like, and is a flat plate-like member having a shape corresponding to the outer periphery of the foot of , and has a concave portion 90a in a region opposite to the region of the back of the sole facing the big toe and the middle toe of the user and the heel of the user, as shown in fig. 12B to 12D.

Upper strap 30 is secured to sole 90 at the same location as footwear 1 of the first embodiment shown in fig. 1. The recess 90a of the sole 90 is formed by cutting a plate-like member. The end of the front belt portion 31 is fixed to the region formed by the recessed portion 90 a.

As shown in fig. 12B, the wall surface of the concave portion 90a extends gently in an arc from the toe-side end portion of the sole 90 toward the longitudinal direction of the sole 90, through a portion slightly closer to the little toe than the front strap portion 31, and through a portion slightly closer to the toe than the terminal end portion of the inner lateral strap portion 32a, and reaches the inner side portion of the sole 90. As shown in fig. 12C and 12D, the outer peripheral portion of the concave portion 90a is open. The bottom of the recess 90a is thin and flexible.

In addition, when the user wears the footwear 9,the big toe, the index toe and their root parts, and the phases of the user The portion of the adductor lateral head of the foot muscle of the foot that is closer to the heel position for the rootOpposite to the recess 90a through the bottom of the recess 90 a. The bottom of the recess 90a is thin and therefore flexible.

When the user walks wearing the footwear 9 having such a structure, the bottom surface of the recess 90a, which is the back surface of the inner half of the toe side of the sole, is separated from the ground. The bottom portion formed by the concave portion 90a is thin-walled, and thus is more flexible than other portions. Therefore, the big toe and the middle toe of the user easily incline to the medial side portions at the root portions thereof when walking. Thus, the center of gravity of the user's foot can be corrected to the inside, and if the user is an O-leg, the distance between the user's knees can be narrowed.

[ ninth embodiment ]

Fig. 13A is a plan view showing the appearance of footwear 10 according to a ninth embodiment of the present invention. Fig. 13B is a plan view showing the back side of fig. 13A. Fig. 13C is a side view from the little toe side of fig. 13A. Fig. 13D is a front view of fig. 13A. Footwear 10 is a so-called beach mop, footwear 10 including sole 100 and, hallux strap 33 and, ankle strap 34. In addition, fig. 13A shows the footwear 10 worn on the left foot of the user, and the footwear 10 worn on the right foot is bilaterally symmetrical with respect to the footwear 10 worn on the left foot, so a detailed description thereof will be omitted with respect to the footwear 10 worn on the right foot.

The sole 100 is made of a rubber material, an EVA urethane material, or the like, and has a two-layer structure of a first layer 101 and a second layer 102, and the first layer 101 includes: a missing part 101a where the heel part of the user is missing, a toe part 101b where the toe of the user is placed, and a missing part 101c where the middle toe, the ring toe, the little toe, and the vicinity of their root parts of the user's foot are missing.

As shown in fig. 13B, the second layer 102 has no missing portions 101a and 101c of the first layer 101, and has a shape to the outer periphery of the foot. The sole 100 is formed by bonding the lower surface of the first layer 101 and the upper surface of the second layer 102 together, and steps are formed by the upper surface of the first layer 101 and the upper surface of the second layer 102 at the portions of the missing portions 101a, 101c. The second layer 102 is made of a material having higher flexibility than the first layer 101. The sole 100 is integrated by overlapping the first layer 101 on the second layer 102 and fixing it by adhesion or the like.

As shown in fig. 13C and 13D, the hallux strap 33 is made of a belt-like member and is arch-shaped and attached to a portion of the toe portion 101b of the first layer 101 where the user's big toe is located. The ankle strap 34 is made of a band-like member, both ends of which are mounted on both ends of the heel side of the toe portion 101b of the first layer 101. Thus, the ankle strap 34 is mounted to the sole 100 in an arch.

The user may insert the instep into ankle strap 34 and wear footwear 10 by inserting the hallux into hallux strap 33. At this point, the ankle strap 34 is disposed about the ankle. When the user wears the footwear 10, the heel of the user's sole is separated based on the amount of step formed by the missing portion 101a and is opposite to the upper surface of the second layer 102. In addition, in the case of the optical fiber,middle of the foot of the user Toe, ring toe, little toe and heel and foot adductor lateral head located closer to heel than heel Based in part onThe step amount formed by the missing part 101c is separated from and is equal toThe upper surface of the second layer 102 is opposite.

The footwear 10 according to the ninth embodiment thus constructed can obtain the same effects as those of the footwear 1 according to the first embodiment. Further, by having the missing portion 101a, the user is put in a posture of standing on the tiptoe and walking, and naturally exercises muscles from the rear side of the thigh to the hip. Further, since the second layer 102 is made of a material having high flexibility, the second layer 102 is elastically deformed greatly when the sole of the foot contacts the second layer 102. This may result in unstable balance of the user, and in order to maintain a stable state, the weight may be concentrated on the medial side of the user's sole. In addition, at least a second layer 102 is interposed between the ground and the sole of the foot, thereby preventing the sole from becoming dirty or stepping directly on the protrusions when footwear 10 is in use.

In addition, according to footwear 10 shown in FIG. 13A,middle toe, ring toe, little toe and root of the foot of the user A part (C)Opposite the upper surface of the second layer 102 of the missing portion 101c, but may includeToe and root thereof。

[ tenth embodiment ]

Fig. 14A is a plan view showing an external appearance of footwear 11 according to a tenth embodiment of the present invention. Fig. 14B is a plan view showing the back surface side of fig. 14A. Fig. 14C is a side view seen from the little toe side of fig. 14A. Fig. 14D is a front view of fig. 14A. Footwear 11 is a so-called beach mop, comprising sole 110 and upper strap 30. In addition, since fig. 14A shows the footwear 11 worn by the left foot of the user, and the footwear 11 worn by the right foot is bilaterally symmetrical to the footwear 11 worn by the left foot, a detailed description thereof will be omitted with respect to the footwear 11 worn by the right foot. The same members or members having the same functions as those of the footwear 1 shown in fig. 1 and 2 are denoted by the same reference numerals, and detailed description thereof will be omitted.

The sole 110 is made of a rubber material, an EVA urethane material, or the like, and is a flat plate-like member having a shape corresponding to the outer periphery of the foot , and has a recess 110a at a portion of the rear surface thereof opposite to the heel of the user. The region of the back surface opposite to the thumb and middle toe of the user and the heel thereof has a concave portion 110b at a portion opposite to the region.

The upper strap 30 is secured to the sole 110 at the same location as the footwear 1 of the first embodiment shown in fig. 1. The concave portions 110a and 110b of the sole 110 are formed by cutting a single plate-like member. The end of the front belt portion 31 is fixed to the region formed by the concave portion 110 b.

As shown in fig. 14B to 14D, the wall surface of the concave portion 110B extends from the toe side end portion of the sole 110 in the longitudinal direction of the sole 110, passes through a portion slightly closer to the little toe than the front band portion 31, is bent at right angles from the vicinity of an acupoint called "Yongquan" on the sole, reaches the inner side portion of the sole 110, and extends in an L shape. The outer peripheral portions of the concave portions 110a, 110b are open.

In a state where the user wears the footwear 11, the heel of the user faces the concave portion 110a through the bottom of the concave portion 110 a. The hallux and the index toe of the user's foot and the portion of the heel thereof and the portion of the lateral head of the adductor hallux muscle located closer to the heel than the heel are opposed to the concave portion 110b via the bottom of the concave portion 110 b. The bottom of the recess 110b is thin, and thus has flexibility.

When the user walks wearing the footwear 11 having such a structure, the bottom surface of the recess 110b, which is the back surface of the inner half of the toe side of the sole, is separated from the ground. Among them, the bottom formed by the concave portion 110b is thin-walled, and thus is more flexible than other portions. Therefore, the big toe and the middle toe of the user easily incline to the medial side portions at the root portions thereof when walking. Thus, the center of gravity of the user's foot can be corrected to the inside, and if the user is an O-leg, the distance between the user's knees can be narrowed. Further, by providing the concave portion 110a, the user can take a posture of standing on the tip of the foot to walk, and by wearing the footwear 11 to walk, the muscles from the rear side of the thigh to the hip can be naturally exercised.

[ eleventh embodiment ]

Fig. 15B is a plan view showing the back surface of fig. 15A. Fig. 15C is a side view from the little toe side of fig. 15A. The footwear 12 is a so-called beach mop, including a sole 120 and an upper strap 30. In addition, fig. 15A shows the footwear 12 worn on the left foot of the user, and the footwear 12 worn on the right foot is bilaterally symmetrical with respect to the footwear 12 worn on the left foot, so a detailed description thereof will be omitted with respect to the footwear 12 worn on the right foot. The same members as those of the footwear 1 shown in fig. 1 and 2, or members having the same functions, are denoted by the same reference numerals, and detailed description thereof will be omitted.

The sole 120 is made of a rubber material, an EVA urethane material, or the like, and has a two-layer structure of a first layer 121 and a second layer 122. As shown in fig. 15B and 15C, the first layer 121 includes: a heel portion 121a where the heel of the user is placed and a toe portion 121b where the toe of the user is placed. The back surface of the first layer 121 further includes a concave portion 121c located on the little toe side with respect to the front belt portion 31. The wall surface of the concave portion 121c extends in a gentle arc from the toe-side end of the first layer 121 toward the longitudinal direction of the first layer 121, through a portion slightly closer to the little toe than the front belt portion 31, and through a portion slightly closer to the toe than the terminal end of the outer lateral belt portion 32b, and reaches the outer side portion of the first layer 121. The outer peripheral portion of the recess 121 is open.

The second layer 122 is a flat plate-like member having a shape of on the outer periphery of the foot. The sole 120 is integrally fixed by overlapping the first layer 121 on the second layer 122 by adhesion or the like. Thereby, the lower portion of the recess 121c is covered by the upper surface of the second layer 122. In other words, the sole 120 forms a gap between the first layer 121 and the second layer 122 by having the recess 121c in the first layer 121.

The upper strap 30 is secured to the sole 120 in the same location as the footwear 1 of the first embodiment shown in fig. 1.

When the user wears the footwear 12, the middle toe, the ring toe, the little toe, and the root portions thereof and the portion of the hallux adductor lateral head and the lateral portion of the plantar arch of the little toe flexor, which are located closer to the heel position with respect to the root portions, are opposed to the concave portion 121 c. That is, the sole is divided into two portions, namely, the toe side and the heel side in the vicinity of the plantar arch, wherein when the toe side is further divided into the medial side (the big toe side) and the lateral side (the little toe side), the portion of the lateral half of the toe side is substantially opposed to the concave portion 121 c.

When the user walks while wearing the footwear 12, the rear surface of the outer half of the toe side of the sole is separated from the ground, that is, the bottom surface of the recess 121c is separated from the upper surface of the second layer 122. Therefore, the upper portion of the concave portion 121c of the first layer 121 is thin and bent upward and downward, and thus walking becomes unstable. In order to maintain walking balance, the user concentrates weight on the medial side of the user's sole. In addition, the bottom surface of the recess 120c may be intentionally kept from contacting the upper surface of the second layer 122 when the user is standing or walking. Thus, the center of gravity of the user's foot can be corrected to the inside, and if the user is an O-shaped leg, the distance between the user's knees can be narrowed.

According to the eleventh embodiment thus constructed, while the same effect as that of the first embodiment can be expected, it is possible to prevent the sole of the foot from being soiled or the user from stepping on the protrusions directly when the footwear 12 is used. Although the sole 120 of the footwear 12 has a two-layer structure, it may have a three-layer structure, and the recess 121c may be provided on the outer side of the sole 120 so that a missing portion is formed in the intermediate layer. Alternatively, the recess 121c may be formed in the outer side portion of the sole 120 by cutting a thicker plate at the center in the thickness direction thereof to form a notch.

[ twelfth embodiment ]

Fig. 16B is a plan view showing the back surface of fig. 16A. Fig. 16C is a side view from the little toe side of fig. 16A. Fig. 16D is a front view of fig. 16A. Footwear 13 is a so-called beach mop, comprising sole 130 and upper strap 30. In addition, FIG. 16A shows footwear 1 being worn on the left foot of a user

3, and the footwear 13 worn on the right foot is bilaterally symmetrical with respect to the footwear 13 worn on the left foot, detailed description thereof will be omitted with respect to the footwear 13 worn on the right foot. The same members as those of the footwear 1 shown in fig. 1 and 2, or members having the same functions, are denoted by the same reference numerals, and detailed description thereof will be omitted.

Footwear 13 differs from footwear 1 of the first embodiment in that sole 20 of the first embodiment is sole 130.

The sole 130 is made of a rubber material, an EVA urethane material, or the like, and has a two-layer structure of a first layer 131 and a second layer 132. The first layer 131 is constituted by a first block 131a that fixes the terminal portions of the inner and outer belt portions 32a, 32b of the upper belt 30 and a second block 131b that fixes the front belt portion 31 of the upper belt 30. The first block 131a, the heel side of which is missing, is configured to be difficult to place the heel of a user. The second block 131b is configured such that an outer portion thereof is missing so that it can be placed on a part of the user's big toe, middle toe and heel thereof, but cannot be placed on the user's middle toe, ring toe, little toe and heel thereof.

The second layer 132 is shaped to the periphery of the foot. The sole 130 is constructed by bonding a lower surface of the first layer 131 to an upper surface of the second layer 132. The first block 131a is fixed to the heel side of the second layer 132, and the second block 131b is fixed to the toe side of the second layer 132.

The sole 130 is constructed by securing a first layer 131 to a 2 nd layer 132. In the sole 130, an L-shaped recess 133a is formed between the first block 131a and the second block 131b, and a recess 133b is formed at the heel side of the second block 131 b.

Footwear 13, in the same manner as footwear 1 in the first embodiment, is completed by attaching upper strap 30 to sole 130.

When the user wears the footwear 13, the heel portion of the user's sole is opposite the recess 133 a. Further, the middle toe, the ring toe, the little toe, and the root portions thereof and the portion of the adductor hallux lateral head of the foot, which is located closer to the heel position with respect to the root portion, and the side portion of the plantar arch of the short flexor of the little toe and a portion of the plantar arch are opposed to the concave portion 133b of the foot of the user. These portions are separated by the amount of the step between the upper surface of the first layer 131 and the upper surface of the second layer 132 formed by the recessed portions 133a, 133b, and are opposed to the upper surface of the second layer 132.

The footwear 13 according to the twelfth embodiment thus constructed can obtain the same effects as those of the footwear 1 according to the first embodiment. Further, by having the recess 133a, the user takes a posture of standing on the tiptoe and walking. Accordingly, by walking with the footwear 13, muscles from the rear side of the lower leg to the buttocks are naturally exercised. In addition, since the second layer 132 is made of a material having high flexibility, the second layer 132 is elastically deformed greatly when the sole of the foot contacts the second layer 132. This may result in unstable balance of the user, and in order to maintain a stable state, the weight may be concentrated on the medial side of the user's sole. In addition, at least the second layer 132 is interposed between the ground and the sole of the foot, so that the sole of the foot can be prevented from becoming dirty or directly stepped on by the protrusions when the footwear 13 is used.

[ thirteenth embodiment ]

Fig. 17B is a plan view showing the back surface side of fig. 17A. Fig. 17C is a side view seen from the little toe side of fig. 17A. Fig. 17D is a front view of fig. 17A. Footwear 14 is a so-called beach mop, including sole 140 and upper strap 30. In addition, fig. 17A shows the footwear 14 worn by the left foot of the user, and the footwear 14 worn by the right foot is bilaterally symmetrical to the footwear 14 worn by the left foot, so that a detailed description thereof will be omitted with respect to the footwear 14 worn by the right foot. The same members or members having the same functions as those of the footwear 1 shown in fig. 1 and 2 are denoted by the same reference numerals, and detailed description thereof will be omitted.

Footwear 14 differs from footwear 1 of the first embodiment in that sole 20 of the first embodiment is sole 140.

The sole 140 is made of a rubber material, an EVA urethane material, or the like, and has a two-layer structure of a first layer 141 and a second layer 142. The first layer 141 includes: the missing portion 141a where the heel portion of the user is missing, the toe portion 141b where the toe of the user is placed, and the missing portion 141c where the middle toe, the ring toe, the little toe, and the vicinity of the root portion of the user's foot are missing.

The missing portion 141c is formed by cutting a portion slightly closer to the little toe than the front belt portion 31 and a portion slightly closer to the toe than the terminal end portion of the outer lateral belt portion 32b from the toe-side end portion of the first layer 141 in the longitudinal direction of the first layer 141 until the outer side portion of the sole 140 has a gentle arc shape.

The second layer 142 does not form the missing portions 141a, 141c in the first layer 141, and has a shape to the outer periphery of the foot. The sole 140 is constructed by bonding the lower surface of the first layer 141 and the upper surface of the second layer 142 together, and as shown in fig. 17C and 17D, portions of the missing portions 141a, 141C are formed with steps formed by the upper surface of the first layer 141 and the upper surface of the second layer 142. The second layer 142 is made of a material having higher flexibility than the first layer 141. An inclined surface 142a is formed on the toe side of the rear surface of the second layer 142, and an inclined surface 142b is formed on the heel side. The inclined surface 142a is inclined upward so that the wall thickness of the second layer 142 is gradually thinned toward the toe side, and the inclined surface 142b is inclined upward so that the wall thickness of the second layer 142 is gradually thinned toward the heel side.

Footwear 14 is completed by attaching upper strap 30 to sole 140 in the same manner as footwear 1 in the first embodiment.

When the user wears the footwear 14, the heel portion of the user's sole is opposite the missing portion 141 a. Further, the middle toe, the ring toe, the little toe, and the root portions thereof and the portion of the lateral head of the adductor hallux muscle and the side portion of the plantar arch of the short flexor hallux muscle, which are located closer to the heel position with respect to the root portions, of the foot of the user are opposed to the missing portion 141 c. Portions are separated by the missing portions 141a, 141b, formed based on the step amount formed on the upper surface of the first layer 141 and the upper surface of the second layer 142, and are opposed to the upper surface of the second layer 142.

The footwear 14 of the thirteenth embodiment thus constructed can obtain the same effects as those of the footwear 1 of the first embodiment. Further, the leg rest has a missing portion 141a to allow the user to walk on the tiptoe, and naturally exercises muscles from the rear side of the thigh to the hip by wearing the footwear 14 to walk. Further, since the second layer 142 is made of a material having high flexibility, when the sole of the foot contacts the second layer 142 via the missing portions 141a and 141c, the second layer 142 is elastically deformed greatly. This may result in unstable balance of the user, and in order to maintain a stable state, the weight may be concentrated on the medial side of the user's sole. In addition, at least a second layer 142 is interposed between the ground and the sole of the foot, thereby preventing the sole from becoming dirty or directly stepping on the protrusions when footwear 14 is used. Further, since the inclined surfaces 142a, 142b are formed on the rear surface of the second layer 142, the movement of the center of gravity during walking can be smooth. Thereby making it easier for the user to walk.

[ fourteenth embodiment ]

Fig. 18A is a plan view showing an external appearance of footwear 15 according to a fourteenth embodiment of the present invention.

Fig. 18B is a plan view showing the back surface of fig. 18A. Fig. 18C is a side view from the little toe side of fig. 18A. The footwear 15 is a so-called beach mop, comprising a sole 150 and an upper strap 30. In addition, fig. 18A shows the footwear 15 worn on the left foot of the user, and the footwear 15 worn on the right foot is bilaterally symmetrical with respect to the footwear 15 worn on the left foot, so a detailed description thereof will be omitted with respect to the footwear 15 worn on the right foot. The same members as those of the footwear 1 shown in fig. 1 and 2, or members having the same functions, are denoted by the same reference numerals, and detailed description thereof will be omitted.

Footwear 15 differs from footwear 1 of the first embodiment in that sole 20 of the first embodiment is sole 150.

The sole 150 is made of rubber material, EVA urethane material, or the like, and is a member having a shape corresponding to the outer periphery of the foot . The sole 150 has a missing portion 150a in which the heel portion is missing.

The footwear 15 according to the fourteenth embodiment thus constructed has the missing portion 150a, so that the user can take a standing-on-standing, tip-on-foot walking posture, and by wearing the footwear 15 to walk, the muscles from the rear side of the thigh to the hip can be naturally exercised.

[ fifteenth embodiment ]

Fig. 19A is a plan view showing an external appearance of footwear 16 according to a fifteenth embodiment of the present invention.

Fig. 19B is a plan view showing the back surface side of fig. 19A. Fig. 19C is a side view seen from the little toe side of fig. 11A. Fig. 19D is a front view of fig. 19A. Footwear 16 is a so-called beach mop that includes sole 160 and upper strap 30. In addition, fig. 19A shows the footwear 16 worn on the left foot of the user, and the footwear 16 worn on the right foot is bilaterally symmetrical with respect to the footwear 16 worn on the left foot, so a detailed description thereof will be omitted with respect to the footwear 16 worn on the right foot. The same members or members having the same functions as those of the footwear 16 shown in fig. 1 and 2 are denoted by the same reference numerals, and detailed description thereof will be omitted.

Footwear 16 differs from footwear 1 of the first embodiment in that sole 20 of the first embodiment is sole 160.

The sole 160 is made of a rubber material, an EVA urethane material, or the like, and has a two-layer structure of a first layer 161 and a second layer 162. The first layer 161 includes: a missing portion 161a where the heel portion of the user is missing. The second layer 162 takes the shape of to the outer circumference of the foot without forming the missing portion 161a of the first layer 161. The second layer 162 has the same hardness as the first layer 161.

A slope 161b is formed on the back surface of the toe side edge of the first layer 161. A slope 162a is formed on the back surface of the toe side edge of the second layer 162. The inclined surfaces 161b and 162a are inclined upward toward the toe side. Therefore, the thicknesses of the toe portions of the first layer 161 and the second layer 162 become thinner.

The sole 160 is formed by bonding the lower surface of the first layer 161 and the upper surface of the second layer 162 together, and a recess (step) is formed by the upper surface of the first layer 161 and the upper surface of the second layer 162 at a portion of the missing portion 161 a. Further, by overlapping a portion of the inclined surface 161b of the first layer 161 and a portion of the inclined surface 162a of the second layer 162, an inclined surface inclined upward toward the toe side is formed on the rear surface side of the toe portion of the sole 160.

Footwear 16 is completed by attaching upper strap 30 to sole 160 in the same manner as footwear 1 in the first embodiment.

When the user wears the footwear 16, the heel portion of the user's sole is separated by the amount of step formed by the missing portion 161a and is opposed to the upper surface of the second layer 162.

In the footwear 16 according to the fifteenth embodiment configured as described above, since the rear surface side of the toe portion is formed with the inclined surface, the rear surface side inclined surface of the toe portion is in contact with the ground during walking, and thus the movement of the center of gravity is smooth during walking, and the user can walk more easily. In addition, at least a second layer 162 is interposed between the ground and the sole of the foot, thereby preventing the sole from becoming dirty or stepping directly on the protrusions when footwear 16 is used.

The embodiments of the present invention have been described above, but the embodiments of the present invention are not limited to the above embodiments. For example, in the above embodiment, beach mop is taken as an example, but may also be applied to a crawler. The material of the foot plate is not limited to rubber material, EVA polyurethane material, or the like. For example, it may be made of wood.

Reference numerals

1-16 shoes

20. 25, 40, 50, 60, 70, 80, 90, 100, 110, 120, 130, 140, 150, 160 sole

20a, 40a, 70a, 121a heel

20b, 40b, 51b, 61b, 70b, 80b, 101b, 121b, 141b toe

20c, 20d, 26a, 51c, 61a, 61c, 70c, 101a, 101c, 141a, 141c, 150a, 161a deletion portion

26. 61, 101, 121, 131, 161 first layer

27. 62, 102, 122, 132, 162 second layer

30 upper strap

31 front belt portion

32 cross belt part

32a inner cross belt portion

32b external cross strap

33. Thumb belt

34 ankle strap

40c, 90a, 90c, 110a, 110b, 121c, 133a, 133b recesses

51d, 61e, 62a, 80d, 142a, 142b, 161b, 162a inclined surfaces

71 soft bottom

80a heel depression

80c outside recess

131a first block

131b second block

Claims

1. A shoe is characterized by comprising an upper belt composed of a front belt part clamped by the big toe and the food toe of a foot and a transverse belt part hung on the instep, and a sole provided with the upper belt and used for placing the foot,

The sole has a heel portion for placing a heel of a user and a missing portion missing a portion of a little toe side with respect to the front strap portion and a toe side with respect to the heel portion,

the missing portion is opposed to at least a middle toe, a ring toe, a little toe, and a root portion thereof of a foot of a user and a portion of a lateral head of adductor hallux muscle in a position closer to a heel with respect to the root portion.

2. A shoe is characterized by comprising an upper belt composed of a front belt part clamped by the big toe and the food toe of a foot and a transverse belt part hung on the instep, and a sole provided with the upper belt and used for placing the foot,

the sole includes a heel portion where a heel of a user is placed and a thin-walled portion where a portion of a thickness of a toe side of the heel portion with respect to a little toe side of the front band portion is thinned,

the thin-walled portion is opposed to at least a middle toe, a ring toe, a little toe, and a heel portion thereof and a portion of a lateral head of a adductor hallux muscle of a foot located closer to a heel position with respect to the heel portion, and is not opposed to the front band portion on a big toe side.

3. An article of footwear according to claim 1, wherein,

4. An article of footwear according to claim 2, wherein,

the sole has an upper layer structure and a lower layer structure,

5. An article of footwear according to claim 2, wherein,

the sole has an upper layer structure and a lower layer structure,

the upper layer, which is the other layer of the two-layer structure, includes: a heel portion for placing a heel of a user and a missing portion missing from a portion of the little toe side of the front belt portion and from the toe side of the heel portion.

6. A footwear according to claim 4 or 5, wherein,

7. A shoe is characterized by comprising an upper belt composed of a front belt part clamped by the big toe and the food toe of a foot and a transverse belt part hung on the instep, and a sole provided with the upper belt and used for placing the foot,

The back surface of the sole is provided with a concave part,

the bottom has flexibility.

8. A shoe is characterized by comprising an upper belt composed of a front belt part clamped by the big toe and the food toe of a foot and a transverse belt part hung on the instep, and a sole provided with the upper belt and used for placing the foot,

the sole has an upper layer structure and a lower layer structure,

the upper layer of one of the two-layer structure has a first missing portion missing a portion opposite to the heel of the user and a second missing portion missing a portion opposite to the toe side of the first missing portion and opposite to the toe side of the front belt portion,

the lower layer of the other layer of the two-layer structure is made of a material having higher flexibility than the upper layer, has a shape of to the outer circumference of the foot without providing the first missing portion and the second missing portion in the upper layer,

The step portion formed by the upper surface of the upper layer and the upper surface of the lower layer in the second missing portion has an inclined surface.

9. A shoe is characterized by comprising an upper belt composed of a front belt part clamped by the big toe and the food toe of a foot, a transverse belt part hung on the instep and a sole provided with the upper belt and used for placing the foot,

the sole has an upper layer structure and a lower layer structure,

the lower layer of the other layer of the two-layer structure has a shape to the outer circumference of the foot without providing the first missing portion and the second missing portion in the upper layer,

the step portion formed by the upper surface of the upper layer and the upper surface of the lower layer in the second missing portion and the toe side end portion of the back surface of the sole have inclined surfaces.

10. A shoe is characterized by comprising an upper belt composed of a front belt part clamped by the big toe and the food toe of a foot and a transverse belt part hung on the instep, and a sole provided with the upper belt and used for placing the foot,

the sole has a higher flexibility in the region opposite to the middle toe, the ring toe, the little toe, and their heel parts and the portion of the lateral head of the adductor hallux muscle located closer to the heel than the heel parts of the user's foot than in the other regions.

11. A shoe is characterized by comprising an upper belt composed of a front belt part clamped by the big toe and the food toe of a foot and a transverse belt part hung on the instep, and a sole provided with the upper belt and used for placing the foot,

the sole having a first depression opposite the heel of the user and a second depression opposite a portion of the toe side opposite the first depression opposite the little toe side of the front strap portion,

the second concave portion is opposite to at least the middle toe, the ring toe, the little toe and the root portion thereof and the part of the adductor muscle transverse head of the foot of the user, which is closer to the heel position relative to the root portion,

the sole has a slope inclined toward the big toe side of the user on the back surface of the toe side end portion of the sole.

12. A shoe is characterized by comprising an upper belt composed of a front belt part clamped by the big toe and the food toe of a foot and a transverse belt part hung on the instep, and a sole provided with the upper belt and used for placing the foot,

the back surface of the sole is provided with a concave part,

the concave part is opposite to at least big toe, food toe and root parts of the big toe and the food toe of the foot of a user through the bottom part of the concave part,

the bottom has flexibility.

13. A footwear comprising a sole on which a foot is placed, a first strap member which is arch-shaped and into which a big toe of the foot can be freely inserted, and a second strap member which is arch-shaped and is attached to a heel side of the sole with respect to the first strap member and into which an instep can be freely inserted,

the sole has an upper layer structure and a lower layer structure,

the upper layer of one of the two layers comprises: a first missing portion missing a portion opposite to the heel of the user and a second missing portion missing a portion opposite to the toe side of the first missing portion with respect to the small toe side of the first strap member,

14. A shoe is characterized by comprising an upper belt composed of a front belt part clamped by the big toe and the food toe of a foot and a transverse belt part hung on the instep, and a sole provided with the upper belt and used for placing the foot,

the back of the sole is provided with a first concave part and a second concave part,

the bottoms of the first concave part and the second concave part are flexible.

15. A shoe is characterized by comprising an upper belt composed of a front belt part clamped by the big toe and the food toe of a foot and a transverse belt part hung on the instep, and a sole provided with the upper belt and used for placing the foot,

the sole has a gap portion extending from a center portion in a lateral thickness direction of a little toe side with respect to the front belt portion toward a big toe side,

16. A shoe is characterized by comprising an upper belt composed of a front belt part clamped by the big toe and the food toe of a foot and a transverse belt part hung on the instep, and a sole provided with the upper belt and used for placing the foot,

the sole has an upper layer structure and a lower layer structure,

the upper layer of one of the two-layer structure has a first block on which the front belt portion is arranged and a second block on which the terminal portions of the cross belt portion are arranged,

the lower layer of the other layer of the two-layer structure is made of a material with higher flexibility than the upper layer and has a shape of according to the periphery of the foot,

a first recess is formed between the first block and the second block, a second recess is formed opposite to the heel of the user at a heel side opposite to the second block,

17. A shoe is characterized by comprising an upper belt composed of a front belt part clamped by the big toe and the food toe of a foot and a transverse belt part hung on the instep, and a sole provided with the upper belt and used for placing the foot,

the sole has an upper layer structure and a lower layer structure,

the upper layer of one of the two-layer structure has a first missing portion missing a portion opposite to the heel of the user and a second missing portion missing a portion opposite to the toe side of the front belt portion and opposite to the toe side of the first missing portion,

the lower layer of the other layer of the two-layer structure is made of a material having higher flexibility than the upper layer and has a shape of to the outer periphery of the foot without providing the first missing portion and the second missing portion in the upper layer,

18. A shoe is characterized by comprising an upper belt composed of a front belt part clamped by the big toe and the food toe of a foot and a transverse belt part hung on the instep, and a sole provided with the upper belt and used for placing the foot,

The sole is made of a flat plate member, and has a missing portion missing from a portion opposite to a heel of a user.

19. A shoe is characterized by comprising an upper belt composed of a front belt part clamped by the big toe and the food toe of a foot and a transverse belt part hung on the instep, and a sole provided with the upper belt and used for placing the foot,

the sole is made of a plate member, has a recess in a portion opposite to the heel of a user,

the tip side end of the back surface of the sole is provided with an inclined surface.