Footwear

Abstract

To provide a foot attachment tool capable of reducing the load on the foot and efficiently recovering foot balance.SOLUTION: A foot attachment tool 1 is formed in a cylindrical shape covering from the root of the toe to the instep and is made of a non-stretchable material. The foot attachment tool 1 comprises a sole cloth 2 covering the sole, and an instep cloth 3 formed of the non-stretchable material to be sewn to the sole cloth 2 and covering the instep. A peripheral length of the sole cloth 2 to the entire peripheral length of the foot attachment tool 1 in a toe side wide part on its tip side is 30% to 50%, and a peripheral length of the sole cloth 2 to the entire peripheral length of the foot attachment tool 1 in a narrow part on its rear end side is 15% to 30%.SELECTED DRAWING: Figure 1

Description

Technical Field

[0001] This invention relates to a foot-wearing device to be worn on a human foot.

Background Art

[0002] Conventionally, there has been provided a foot-wearing device capable of reproducing the arch of the sole and restoring the balance of the foot. As such a foot-wearing device, there has been proposed a sock that has an elastic force by weaving rubber, and further, a thread or rubber that is difficult to stretch is added to the rubber part and woven obliquely so as to tighten and fix a specific part of the foot, thereby tightening and fixing a specific part of the foot (see Patent Document 1).

[0003] However, in the conventional foot-wearing device as described above, since a specific part of the foot is tightened and fixed with a sock formed of a material having an elastic force, there is a problem that blood flow deteriorates due to compression of the foot, and a burden is imposed on the foot. Further, in the conventional foot-wearing device, the effect can be obtained only while it is being worn, so that only a limited effect can be obtained, and there is room for improvement also from the viewpoint of efficiently restoring the balance of the foot.

Prior Art Documents

Patent Documents

[0004]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0005] In view of the above problems, an object of this invention is to provide a foot-wearing device capable of reducing the burden on the foot and efficiently restoring the balance of the foot.

Means for Solving the Problems

[0006] This invention covers from the base of the toes to the toenail part Do not cover the fingertips, knuckles, and heels of the first toe (thumb) to the fourth toe (ring finger).A tubular foot wear, comprising a sole cloth made of a non-stretchable material and covering the sole of the foot, and a toenail cloth made of a non-stretchable material and sewn to the sole cloth and covering the toenail. The ratio of the perimeter of the sole cloth to the overall perimeter of the foot wear at the wide toe side portion on the front end side is 30% to 49%, and the ratio of the perimeter of the sole cloth to the overall perimeter of the foot wear at the narrow portion on the rear end side is 15% to 30%. The sole cloth is woven with thicker threads than the toenail cloth and is formed to be thicker than the toenail cloth, and is also harder than the toenail cloth. Ku, the sole cloth length, which is the width length at the toenail position of the narrow part on the rear end side, is 55% or more and 80% or less of the sole cloth length, which is the width length at the foot width position of the wide part on the toe side of the front end side. A foot wear characterized by the above.

Advantages of the Invention

[0007] According to this invention, the burden on the foot can be reduced and the balance of the foot can be efficiently restored.

Brief Description of the Drawings

[0008]

Figure 1

Figure 2

Figure 3

Figure 4A

Figure 4B

Figure 4C

Figure 4D

Figure 4E

Figure 5

Figure 6

Embodiments for Carrying out the Invention

[0009] Hereinafter, an embodiment of the present invention will be described with reference to the drawings. FIG. 1 is a perspective view showing the configuration of the foot wear 1. FIG. 2 is a top view showing the configuration of the foot wear 1. FIG. 3 is a front view showing the configuration of the foot wear 1. FIG. 4A is an end view of the A-A cut portion in FIG. 2. FIG. 4B is an end view of the B-B cut portion in FIG. 2. FIG. 4C is an end view of the C-C cut portion in FIG. 2. FIG. 4D is an end view of the D-D cut portion in FIG. 2. FIG. 4E is an end view of the E-E cut portion in FIG. 2. FIG. 5 is a schematic cut end view showing the dimensions of each part of the foot wear 1. FIG. 6 is a plan view showing the configuration of the insole 2. Note that since FIG. 5 is a schematic view, the detailed structure of the sewing part etc. is omitted.

[0010] The foot wear 1 of the present invention is used by being worn on a person's foot. As shown in FIGS. 1 to 6, when the foot wear 1 is worn on a person's foot, it covers from the base of the toes to the toenail part. For example, the foot wear 1 covers from the middle phalangeal joint to the Lisfranc joint part.

[0011] Also, when the foot wear 1 is worn on a person's foot, at the front end, it covers at least a part of the first toe (thumb) to the fifth toe (little finger) of the foot, and at the rear end, it covers at least a part of the instep. That is, at the front end, the foot wear 1 covers both left and right sides of the middle phalangeal joint. However, the foot wear 1 does not cover the fingertips of the first toe (thumb) to the fourth toe (ring finger), the ankles, and the heels.

[0012] Note that the foot wear 1 is usually worn on each of the left and right feet, and a pair of symmetrically shaped ones corresponding to the left and right feet is one set (one pair). In this embodiment, only the foot wear 1 for the left foot will be described as an example. Although detailed description is omitted, the structure of the foot wear 1 for the right foot is obtained by inverting the inner and outer sides of the structure of the foot wear 1 for the left foot described below.

[0013] In this specification, the front-rear direction of the foot-wearing device 1 and its constituent members is defined with the toe side (toe tip side) of the foot of the person wearing the foot-wearing device 1 as the front (frontward) and the ankle side (heel side) as the rear (backward). Also, the inside-outside direction of the foot-wearing device 1 and its constituent members is defined with the big toe side of the foot as the inside and the little toe side of the foot as the outside.

[0014] The foot-wearing device 1 has a sole cloth 2 that covers the sole portion of a person's foot and a toenail cloth 3 that covers the toenail portion of the person's foot. The foot-wearing device 1 is formed as a cylindrical shape with a substantially circular cross-section (including an ellipse) as a whole by the sole cloth 2 and the toenail cloth 3.

[0015] Each of the sole cloth 2 and the toenail cloth 3 is made of a non-stretchable material (non-stretch material). That is, the entire foot-wearing device 1 is made of a non-stretchable material. As the non-stretchable material constituting the sole cloth 2 and the toenail cloth 3 (the foot-wearing device 1), a cloth (fabric) made of cotton or a cotton blended fiber of cotton and polyester can be used. In this embodiment, each of the sole cloth 2 and the toenail cloth 3 (the entire foot-wearing device 1) is made of a cloth consisting only of cotton (100% cotton).

[0016] Also, each of the sole cloth 2 and the toenail cloth 3 has a multi-layer structure in which a plurality of cloths are overlapped. In this embodiment, each of the sole cloth 2 and the toenail cloth 3 has a two-layer structure in which an outer cloth and an inner cloth are overlapped. In FIG. 3, for the sake of convenience, each of the sole cloth 2 and the toenail cloth 3 is represented as one piece. Specifically, as shown in FIGS. 4A to 4F, the sole cloth 2 has a sole outer cloth 2a and a sole inner cloth 2b, and the toenail cloth 3 has a toenail outer cloth 3a and a toenail inner cloth 3b. Note that the sole outer cloth 2a and the toenail outer cloth 3a (especially the toenail outer cloth 3a) will constitute the appearance of the foot-wearing device 1. For this reason, at least the toenail outer cloth 3a is provided with an appropriate color and pattern in order to improve the design property.

[0017] Furthermore, since the sole cloth 2 (the outer sole cloth 2a and the inner sole cloth 2b) is prone to breakage under load, in order to ensure durability and strength, it is woven with thicker threads than the toenail cloth 3 (the outer toenail cloth 3a and the inner toenail cloth 3b), and a fabric made by a weaving method such as suzuhi weaving or unsai weaving is used. At least the outer sole cloth 2a is woven with thicker threads than the outer toenail cloth 3a. Therefore, the sole cloth 2 is formed to be thicker than the toenail cloth 3.

[0018] Also, since the sole cloth 2 is woven with thicker threads and is thicker than the toenail cloth 3, it is harder than the toenail cloth 3 and is formed to maintain a flat state even when a person's weight is applied and not to deform easily (so that the shape is stable). On the other hand, the toenail cloth 3 is woven with thinner threads and is thinner than the sole cloth 2, so it is softer than the sole cloth 2 and is formed to be easily deformed along the shape of a person's toenail. On the other hand, the toenail cloth 3 is soft but non-stretchable and has a strength sufficient to correct the shape of a person's foot. For this reason, the toenail cloth 3 absorbs individual differences in the shape of a person's foot by deforming, and the foot wear 1 can be fitted to a person's foot regardless of the shape of the foot.

[0019] The toenail cloth 3 has an inner nail part 31 corresponding to the first toe (big toe) and an outer nail part 32 corresponding to the remaining four toes, that is, the second toe (index finger) to the fifth toe (little finger). As shown in FIGS. 2, 3, and 4A, the outer end of the inner nail part 31 and the inner end of the outer nail part 32 are sewn from the front end (the innermost part of the split part 23) to the rear end of the foot wear 1, and a sewing line 33 corresponding to the part where the inner nail part 31 and the outer nail part 32 are sewn (the first sewing part 51) is formed. Specifically, as shown in FIG. 4A, the inner nail part 31 has an outer inner nail cloth 31a and an inner toenail inner cloth 31b, and the outer nail part 32 has an outer outer nail cloth 32a and an outer toenail inner cloth 32b.

[0020] The first stitching portion 51 is formed by sewing the outer inner armor cloth 31a, the outer outer armor cloth 32a, the inner outer armor toe inner cloth 32b, and the inner inner armor toe inner cloth 31b in a normal four-layered state from the outside (the outer surface side of the cylindrical foot wear 1) near the edge (3 to 5 mm inside from the edge) with the first stitching thread 34, and then turning it inside out so that the first stitching thread 34 and the seam formed by the first stitching thread 34 face inward. Therefore, at the first stitching portion 51, the edge of the outer inner armor cloth 31a, the edge of the outer outer armor cloth 32a, the edge of the inner outer armor toe inner cloth 32b, the edge of the inner inner armor toe inner cloth 31b, and the first stitching thread 34 are not exposed to the outside, realizing a very high design quality.

[0021] Also, at the first stitching portion 51, none of the edges of the outer inner armor cloth 31a, the outer outer armor cloth 32a, the inner outer armor toe inner cloth 32b, and the inner inner armor toe inner cloth 31b are exposed on the inner surface of the toe cloth 3 (the surface that contacts the center of the human toenail). Therefore, the edge of each cloth does not cause pain to the foot, and the soft but non-stretchable toe cloth 3 can firmly hold the toe portion.

[0022] In addition, a front opening 4 is formed at the front end portion of the foot wear 1, and a rear opening 5 is formed at the rear end portion of the foot wear 1. Further, as shown in FIG. 6, at the tip of the insole cloth 2, a V-shaped or U-shaped split portion 23 is formed between the portion corresponding to the first toe (thumb) of the foot and the portion corresponding to the second toe (index finger) in plan view.

[0023] As shown in FIG. 4B, at the front end portion of the foot wear 1, the toe cloth 3 is sewn along the inner edge 24 and the outer edge 25 of the split portion 23. Specifically, a second stitching portion 52 where the inner edge 24 and the inner armor portion 31 (the outer end portion of the inner armor portion 31) are sewn, and a third stitching portion 53 where the outer edge 25 and the outer armor portion 32 (the inner end portion of the outer armor portion 32) are sewn are formed.

[0024] The second stitching part 52 is formed by sewing the inner toenail inner cloth 31b, the inner toenail outer cloth 31a, the sole outer cloth 2a, and the sole inner cloth 2b in a normal four-layer stack from the outside (the outer surface side of the cylindrical foot wear 1) near the edge (3 to 5 mm inside from the edge) with the second sewing thread 35, and then turning the inner toenail part 31 inside out into a U-shaped cross-section so that the second sewing thread 35 and the seam formed by the second sewing thread 35 face inward. Therefore, in the parts other than the second stitching part 52, the inside and outside of the inner toenail inner cloth 31b and the inner toenail outer cloth 31a are reversed, with the inner toenail inner cloth 31b on the inside and the inner toenail outer cloth 31a on the outside. At this time, the sole cloth 2 (the end part including the inner edge 24) curves along the shape of a person's foot (index finger), but as a whole, the edge is in an upward state without bending. Therefore, on a person's foot (the outer surface of the index finger), the inner surface (the sole inner cloth 2b) of the sole cloth 2 (the end part including the inner edge 24) is in surface contact, so there is no sense of discomfort in the index finger part, and the non-stretchable toenail cloth 3, which is soft, can firmly hold the index finger.

[0025] The third stitching part 53 is formed by sewing the outer toenail inner cloth 32b, the outer toenail outer cloth 32a, the sole outer cloth 2a, and the sole inner cloth 2b in a normal four-layer stack from the outside (the outer surface side of the cylindrical foot wear 1) near the edge (3 to 5 mm inside from the edge) with the third sewing thread 36, and then turning the outer toenail part 32 inside out into a U-shaped cross-section so that the third sewing thread 36 and the seam formed by the third sewing thread 36 face inward. Therefore, in the parts other than the third stitching part 53, the inside and outside of the outer toenail inner cloth 32b and the outer toenail outer cloth 32a are reversed, with the outer toenail inner cloth 32b on the inside and the outer toenail outer cloth 32a on the outside. At this time, the sole cloth 2 (the end part including the outer edge 25) curves along the shape of a person's foot (thumb), but as a whole, the edge is in an upward state without bending. Therefore, on a person's foot (the inner surface of the thumb), the inner surface (the sole inner cloth 2b) of the sole cloth 2 (the end part including the outer edge 25) is in surface contact, so there is no sense of discomfort in the thumb part either, and the non-stretchable toenail cloth 3, which is soft, can firmly hold the index finger.

[0026] Although illustration is omitted, the second stitching portion 52 and the third stitching portion 53 merge at the innermost part of the split crack portion 23, and further, the front end portion of the first stitching portion 51 merges at the merging point of the second stitching portion 52 and the third stitching portion 53. That is, at the innermost part of the split crack portion 23, three seams of the first stitching portion 51, the second stitching portion 52, and the third stitching portion 53 merge. Also, in the second stitching portion 52 and the third stitching portion 53, the edges of each fabric (especially the outer sole fabric 2a and the inner sole fabric 2b that constitute the sole fabric 2) may hit the foot, causing foot pain. In this case, by hitting or kneading and loosening each fabric (especially the sole fabric 2) that constitutes the second stitching portion 52 and the third stitching portion 53 with a wooden mallet or the like, the second stitching portion 52 and the third stitching portion 53 become soft, and the foot pain can be eliminated.

[0027] Therefore, as shown in FIGS. 1 to 3, the front opening 4 is divided into an inner opening 41 for passing the thumb and an outer opening 42 for passing fingers other than the thumb, that is, fingers outside the index finger.

[0028] For this reason, when wearing a sandal with a thong while wearing the footgear 1, the sole fabric 2 or the instep fabric 3 is interposed between the inner opening 41 and the outer opening 42, and the thong does not directly hit a person's foot (between the fingers). Therefore, by wearing the footgear 1, it is possible to prevent thong rubbing when wearing a sandal with a thong. Also, regarding the part where the lining of the thong contacts the skin at the instep part, the thong does not directly hit a person's foot, and it is possible to prevent low-temperature burns due to friction caused by the movement of the foot when walking.

[0029] As shown in FIGS. 4C and 5, the outer side end portion (outer side end portion) 22 of the sole fabric 2 and the outer side end portion (outer side end portion) 321 of the instep fabric 3 are stitched. Specifically, as shown in FIG. 4C, a fourth stitching portion 54 where the outer side end portion 22 of the sole fabric 2 and the outer side end portion 321 of the instep fabric 3 are stitched is formed.

[0030] The fourth stitching part 54 is formed by stitching, from the outside (the outer surface side of the cylindrical foot wear 1) in order, the inner cloth 32b of the toe piece of the outer armor part, the outer cloth 32a of the outer armor part, the outer cloth 2a of the sole, and the inner cloth 2b of the sole in a state where four layers are normally stacked, and stitching the vicinity of the edge (inside 3 to 5 mm from the edge) with the fourth stitching thread 37, and turning the outer armor part 32 inside out into a U-shaped cross-section so that the fourth stitching thread 37 and the seam formed by the fourth stitching thread 37 face inward. Therefore, in parts other than the fourth stitching part 54, the inside and outside of the inner cloth 32b of the toe piece of the outer armor part and the outer cloth 32a of the outer armor part are reversed, with the inner cloth 32b of the toe piece of the outer armor part on the inside and the outer cloth 32a of the outer armor part on the outside. At this time, since the sole cloth 2 receives the weight of a person (vertical force) from the person's foot (outer sole part), it has a substantially flat shape. However, since a slight step corresponding to the thickness of two layers of the outer armor part 32 is caused by the fourth stitching part 54 (the folded-back part of the outer armor part 32), it bends slightly due to this step, but the edge is substantially horizontal as a whole without bending. At this time, since the inner surface (inner cloth 2b of the sole) of the sole cloth 2 is in surface contact with the person's foot (sole), there is no sense of discomfort even in the outer sole part, and the non-stretchable but soft toe piece cloth 3 can firmly hold the outer part of the foot from the outer sole part to the outer toe part.

[0031] Also, as shown in FIGS. 4D, 4E, and 5, the inner side end part (inner side end part) 21 of the sole cloth 2 and the inner side end part (inner side end part) 311 of the toe piece cloth 3 are stitched together. Specifically, as shown in FIGS. 4D and 4E, a fifth stitching part 55 is formed where the inner side end part 21 of the sole cloth 2 and the inner side end part 311 of the toe piece cloth 3 are stitched together.

[0032] The fifth stitching part 55 is formed by sewing the vicinity of the edge (3 to 5 mm inside from the edge) with the fifth sewing thread 38 in a state where the inner toe inner cloth 31b, the inner toe outer cloth 31a, the sole outer cloth 2a, and the sole inner cloth 2b are normally stacked four layers in order from the outside (the outer surface side of the cylindrical foot wear 1), and then turning the inner toe part 31 inside out into a U-shaped cross-section so that the fifth sewing thread 38 and the seam formed by the fifth sewing thread 38 face inward. Therefore, in the parts other than the fifth stitching part 55, the inside and outside of the inner toe inner cloth 31b and the inner toe outer cloth 31a are reversed, with the inner toe inner cloth 31b on the inside and the inner toe outer cloth 31a on the outside.

[0033] As shown in FIG. 4D, at the tip side of the foot wear 1 (the side beyond the middle phalangeal joint of the toe, that is, the thumb part), the sole cloth 2 curves along the shape of a human foot (thumb), but as a whole, the edge is in a state of being obliquely upward without bending. At this time, since the inner surface (the sole inner cloth 2b) of the sole cloth 2 is in surface contact with the human foot (the outer surface of the thumb), there is no sense of discomfort in the thumb part, and the non-elastic toe cloth 3 that is soft can firmly hold the inside of the thumb.

[0034] Also, as shown in FIG. 4E, at the rear end side of the foot wear 1 (the rear end side from the middle phalangeal joint, that is, the sole part), since the sole cloth 2 receives the weight of a person's foot (the vertical force) from the person's foot (the inner part of the sole), it has a substantially flat shape. However, since there is a slight step in the thickness of two layers of the inner armor part 31 due to the fifth stitching part 55 (the folded-back part of the inner armor part 31), it bends slightly due to this step, but the edge is substantially horizontal as a whole without bending. At this time, since the inner surface (the inner sole cloth 2b) of the sole cloth 2 is in surface contact with the person's foot (the sole), there is no discomfort even in the inner part of the sole, and the non-elastic but soft toenail cloth 3 can firmly hold the inner part of the foot from the inner part of the sole to the inner part of the toenail. Note that since the rear end part of the foot wear 1 overlaps a part of the instep, the surface of the person's sole that contacts the sole cloth 2 may not always be horizontal. However, as will be described in detail later, since the perimeter of the sole cloth 2 of the present invention becomes shorter toward the rear end part, in the instep part, the fifth stitching part 55 enters deep inside the foot, and the edge can be substantially horizontal as a whole without bending. Therefore, throughout the front and rear of the foot (from the base of the big toe to the instep), there is no discomfort in the inner part of the sole, and the non-elastic but soft toenail cloth 3 can firmly hold the inner part of the foot from the inner part of the sole to the inner part of the toenail.

[0035] Also, as shown in FIG. 6, the inner side end part 21 and the outer side end part 22 of the sole cloth 2 are each curved so as to bulge (protrude) outward. Also, the curvature of each of the inner side end part 21 and the outer side end part 22 of the sole cloth 2 is not constant, but as a whole, the curvature of the outer side end part 22 of the sole cloth 2 is larger (the radius of curvature is smaller) than the curvature of the inner side end part 21 of the sole cloth 2. However, the outer side end part 22 of the sole cloth 2 has a larger curvature at the tip part (the part covering the little finger and the base of the little finger) and has a shape that cuts inward. Furthermore, the space between the inner side end part 21 and the outer side end part 22 of the sole cloth 2 is formed so as to widen toward the tip part. Note that the inner side end part 21 may be linear.

[0036] Next, each dimension of the footgear 1 and its constituent members will be described. However, as shown in Fig. 1, the length of the footgear 1 in the front-rear direction (axial direction) is referred to as the front-rear length L1. As shown in Fig. 5, the width length (circumference) of the insole cloth 2 is referred to as the insole cloth length L2, the width length (circumference) of the inner armor part 31 is referred to as the inner armor part length L3, the width length (circumference) of the outer armor part 32 is referred to as the outer armor part length L4, and the overall circumference of the footgear 1 is referred to as the overall circumference L5. Although not shown in the figure, the sum (total length) of the inner armor part length L3 and the outer armor part length L4 is the circumference (instep cloth length) L6 of the instep cloth.

[0037] Also, as shown in Figs. 2 and 6, the position of the tip part (the part corresponding to the middle phalange joint of the foot or the wide part on the toe side) of the footgear 1 is referred to as the foot width position F, and the position of the rear end part (the narrow part) of the footgear 1 is referred to as the instep position R. Further, each of the insole cloth length L2, the inner armor part length L3, the outer armor part length L4, the overall circumference L5, and the instep cloth length L6 at the foot width position (front end part) F may be referred to as the insole cloth length L2F, the inner armor part length L3F, the outer armor part length L4F, the overall circumference L5F, and the instep cloth length L6F, respectively. Furthermore, each of the insole cloth length L2, the inner armor part length L3, the outer armor part length L4, the overall circumference L5, and the instep cloth length L6 at the instep position (rear end part) R may be referred to as the insole cloth length L2R, the inner armor part length L3R, the outer armor part length L4R, the overall circumference L5R, and the instep cloth length L6R, respectively.

[0038] The front-rear length L1 of the footgear 1 is appropriately adjusted according to the length of the foot of the person wearing the footgear 1. For example, the front-rear length L1 of the footgear 1 is set within the range of 50% to 65% of the length of the person's foot, specifically, within the range of 13 cm to 18 cm.

[0039] The minimum length of the overall circumference L5F of the instep position (front end) F with respect to the front-rear length L1 is at least 130% or more, preferably 140% or more, and more preferably 142% or more. The maximum length of the overall circumference L5F of the instep position (front end) F with respect to the front-rear length L1 is at most 170% or less, preferably 160% or less, and more preferably 158% or less. For example, when the length L1 in the front-rear direction is 14 cm, the overall circumference L5F will be within the range of 18.2 cm (130%) to 23.8 cm (170%).

[0040] The minimum length of the overall circumference L5R of the toenail position (rear end) R with respect to the front-rear length L1 is at least 140% or more, preferably 150% or more, and more preferably 157% or more. Also, the maximum length of the overall circumference L5R of the toenail position (rear end) R with respect to the front-rear length L1 is at most 190% or less, preferably 180% or less, and more preferably 179% or less. For example, when the length L1 in the front-rear direction is 14 cm, the overall circumference L5R will be within the range of 19.6 cm (140%) to 26.6 cm (190%).

[0041] However, the overall circumference L5R of the toenail position R is set to be the same as or longer than the overall circumference L5F of the instep position F. This is because generally, the circumference of the toenail part is longer than that of the middle phalangeal joint part of a person's foot. Also, the overall circumference L5 changes gradually to become longer as it goes from the toenail position (rear end) R to the instep position (front end) F.

[0042] The minimum length of the sole cloth length L2F with respect to the entire circumference L5F of the instep position F is at least 30% or more, preferably 35% or more, and more preferably 37% or more. The maximum length of the sole cloth length L2F with respect to the entire circumference L5F is at most 49% or less, preferably 45% or less, and more preferably 40% or less. For example, when the entire circumference L5F is 21 cm, the sole cloth length L2F is within the range of 6.3 cm (30%) to 10.5 cm (50%). That is, the minimum length of the toenail cloth length L6F with respect to the entire circumference L5F is at least 51% or more, preferably 55% or more, and more preferably 60% or more. Also, the maximum length of the toenail cloth length L6F with respect to the entire circumference L5F is at most 70% or less, preferably 65% or less, and more preferably 63% or less.

[0043] The minimum length of the sole cloth length L2R with respect to the entire circumference L5R of the toenail position R is at least 15% or more, preferably 20% or more, and more preferably 23% or more. The maximum length of the sole cloth length L2R with respect to the entire circumference L5R is at most 30% or less, preferably 27% or less, and more preferably 25% or less. For example, when the entire circumference L5R is 21 cm, the sole cloth length L2R is within the range of 3.15 cm (15%) to 6.3 cm (30%). That is, the minimum length of the toenail cloth length L6R with respect to the entire circumference L5R is at least 70% or more, preferably 73% or more, and more preferably 75% or more. Also, the maximum length of the toenail cloth length L6R with respect to the entire circumference L5R is at most 85% or less, preferably 80% or less, and more preferably 77% or less.

[0044] As described above, as a whole, the sole cloth length L2 of the foot wear 1 is shorter than the toenail cloth length L6 (the toenail cloth length L6 is longer than the sole cloth length L2). In this way, the sole cloth length L2 is set shorter with respect to the entire circumference L5, and more specifically, it is set to be shorter than the length (width of the sole) of the sole of the person wearing the foot wear 1.

[0045] Also, the perimeter of the insole cloth 2 changes so as to gradually increase from the toenail position (rear end) R toward the instep position (front end) F. That is, the insole cloth length L2R at the toenail position R is shorter than the insole cloth length L2F at the instep position F. The minimum length of the insole cloth length L2R with respect to the insole cloth length L2F is at least 55% or more, preferably 65% or more, and more preferably 70% or more. The maximum length of the insole cloth length L2R with respect to the insole cloth length L2F is at most 80% or less, preferably 75% or less, and more preferably 72% or less.

[0046] Furthermore, the ratio of the insole cloth length L2F to the overall perimeter L5F at the instep position F is larger than the ratio of the insole cloth length L2R to the overall perimeter L5R at the toenail position R. Also, the ratio of the insole cloth length L2 to the overall perimeter L5 changes so as to gradually increase from the toenail position R toward the instep position F (changes so as to gradually increase from the instep position F toward the toenail position R).

[0047] Moreover, the minimum length of the inner toenail part length L3F with respect to the outer toenail part length L4F at the instep position F is at least 70% or more, preferably 72% or more. The maximum length of the inner toenail part length L3F with respect to the outer toenail part length L4F is at most 75% or less, preferably 74% or less.

[0048] The minimum length of the inner toenail part length L3R with respect to the outer toenail part length L4R at the toenail position R is at least 95% or more, preferably 96% or more. The maximum length of the inner toenail part length L3R with respect to the outer toenail part length L4R is at most 98% or less, preferably 97% or less.

[0049] As described above, the ratio of the length L3F of the inner armor part to the length L4F of the outer armor part at the instep position F is smaller than the ratio of the length L3R of the inner armor part to the length L4R of the outer armor part at the big toe position R. Also, the ratio of the length L3 of the inner armor part to the length L4 of the outer armor part changes so as to gradually decrease from the big toe position R toward the instep position F. Further, as a whole of the footgear 1, the length L3 of the inner armor part is shorter than the length L4 of the outer armor part (the length L4 of the outer armor part is longer than the length L3 of the inner armor part). That is, since the width dimension (dimension in the inner-outer direction) of the outer armor part 32 is slightly larger than the width dimension of the inner armor part 31, the stitching line 33 is formed so as to pass slightly inside from the central part in the width direction (inner-outer direction) of the big toe cloth 3 (footgear 1).

[0050] In this way, by making the length L3 of the inner armor part shorter than the length L4 of the outer armor part, the ratio of the length L3F of the inner armor part to the length L4F of the outer armor part at the instep position F being smaller than the ratio of the length L3R of the inner armor part to the length L4R of the outer armor part at the big toe position R, and further, the ratio of the length L3 of the inner armor part to the length L4 of the outer armor part changing so as to gradually decrease from the big toe position R toward the instep position F, the stitching line 33 can be made to pass through the highest part (between the thumb bone and the index finger bone) or the vicinity of the highest part of the human big toe. That is, since the inner armor part 31 and the outer armor part 32 are stitched with the highest part of the big toe as a boundary, the force applied to the footgear 1 can be evenly dispersed between the inner armor part 31 and the outer armor part 32, and it is possible to prevent a local burden from being applied to the human foot and to prevent displacement during wearing. Also, by setting the ratio of the length L3 of the inner armor part to the length L4R of the outer armor part at the front end to 70% - 75% and the ratio of the length L3 of the inner armor part to the length L4R of the outer armor part at the rear end to 95% - 98%, the force applied to the footgear 1 can be more evenly dispersed, and the burden on the human foot can be further reduced.

[0051] With the above configuration, as a whole of the foot wear 1, the length L2 of the sole cloth is shorter than the length L6 of the instep cloth (30 - 50% at most), and is set to be shorter than the length (width of the sole) of the sole of the person on whom the foot wear 1 is worn. Therefore, the foot wear 1 is formed in a shape that fits the person's foot without any gaps, so that the burden on the foot can be reduced and the balance of the foot can be efficiently restored. In addition, it is possible to prevent the foot from flowing outward as a whole and to prevent the center of gravity position of the sole in the standing position from becoming too far outside. Further, since the length L2 of the sole cloth is shorter than the length L6 of the instep cloth, the edges of the sole cloth 2 at the fourth stitching portion 54 and the fifth stitching portion 55 enter the inside of the foot, so that the range in which it becomes almost horizontal can be made as large as possible, and a sense of discomfort can be eliminated on the sole.

[0052] In particular, since the instep cloth 3 fits tightly without gaps on the side of the foot that rises from the sole, where gaps are likely to form, towards the toenail, the foot wear 1 supports the foot of the person wearing it to have an ideal shape, regenerates the arch (especially the transverse arch from the ball of the big toe to the ball of the little toe) on the sole, and can restore the balance of the foot. Also, since the entire foot wear 1 is made of a non-stretchable material and does not compress the foot with elastic force, it does not compress the foot more than necessary and can reduce the burden on the foot. Specifically, for example, during walking, when the foot touches the ground and presses down, the foot wear 1 firmly holds the foot that tends to spread to the left and right and maintains the arch. When the foot is lifted from the ground, since there is no such load, the non-stretchable material foot wear 1 does not apply a load to the foot in a soft state. In this way, if it were a stretchable material, the part that is always compressed because it compresses the foot even when lifted from the ground is made of a non-stretchable material, so that the foot can be corrected only when necessary and no load is applied when not necessary, realizing a comfortable wearing experience. Furthermore, since the soft but non-stretch instep cloth firmly holds from the upper part to the side part of the foot, the foot wear 1 can efficiently support the foot of the person wearing it to have an ideal shape, regenerate the arch on the sole, and restore the balance of the foot. Specifically, it can regenerate the transverse arch and support the medial longitudinal arch from the ball of the big toe to the calcaneus and the lateral longitudinal arch from the ball of the little toe to the calcaneus, so that the overall balance of the foot can be restored and the original walking trajectory of the person can be realized. Also, by adjusting the balance of the foot, the balance of the whole body can be adjusted, and for example, symptoms such as knee pain, hip joint pain, low back pain, back pain due to kyphosis, and hunched shoulders can also be alleviated. Furthermore, when the arch of the foot is formed, a cushion can be formed on the sole, which can absorb shock and at the same time obtain a pumping effect, improving blood circulation. Therefore, it can also contribute to the improvement of hypothermia.

[0053] In addition, the foot wear 1 is formed in a tubular shape so as to cover from the base of the toes (the middle phalangeal joint) to a part of the toenail portion, and is further formed in a shape that fits the human foot. Therefore, it can be worn more easily than a normal sock that covers from the normal toe tip to the ankle. Similarly, it can also be worn more easily than a foot wear such as a supporter that tightens and fixes a specific part of the foot with a sock made of an elastic material. Therefore, even a person who feels it troublesome to wear a sock or a supporter for tightening and fixing can easily wear the foot wear 1 of the present invention and can efficiently restore the balance of the foot.

[0054] In addition, since the foot wear 1 is formed of a non-stretchable material, it is almost not deformed in size and shape due to long-term use, repeated washing, and strong loads, etc., and the effect can be sustained even when worn for a long time.

[0055] This invention is not limited to this embodiment and can be other various embodiments. Also, the specific configurations etc. mentioned in the above embodiment are examples, and it is possible to appropriately change according to the actual product.

Industrial Applicability

[0056] This invention can be used in the industry of manufacturing and selling foot wear to be worn on the human foot.

Explanation of Reference Numerals

[0057] 1... Foot wear 2... Insole 21... Inner side end portion 22... Outer side end portion 3... Insole 31... Inner toenail portion 32... Outer toenail portion

Claims

1. A tubular foot wear that covers from the base of the toes to the toenail part and does not cover the tips of the toes from the first toe (thumb) to the fourth toe (ring finger), the ankles, and the heels, composed of a non - stretchable material, and a sole cloth that covers the sole of the foot, comprising a toenail cloth composed of a non - stretchable material sewn to the sole cloth and covering the toenail, The ratio of the perimeter of the sole cloth to the overall perimeter of the foot wear at the wide toe - side part on the front - end side is 30% to 49%, The ratio of the perimeter of the sole cloth to the overall perimeter of the foot wear at the narrow - side part on the rear - end side is 15% to 30%, The sole cloth is woven with thicker threads than the toenail cloth and is formed to be thicker and harder than the toenail cloth, The length of the sole cloth, which is the width - length of the sole cloth, changes so as to gradually increase from the rear - end side to the front - end side, and the length of the sole cloth at the toenail position of the narrow - side part on the rear - end side is 55% or more and 80% or less of the length of the sole cloth at the foot - width position of the wide toe - side part on the front - end side Foot wear.

2. The configuration is such that the toenail cloth fits snugly against the side of the foot rising from the sole to the toenail without any gaps The foot wear according to Claim 1.

3. At the stitching part where the sole cloth and the toenail cloth are stitched together, the toenail cloth is stitched to the sole cloth in a state where it is turned inside - out in a U - shaped cross - section so that the inner surface of the sole cloth is in surface contact with a person's foot. The foot wear according to Claim 1 or 2.

4. The toenail cloth has an inner toenail part corresponding to the thumb and an outer toenail part corresponding to the index finger to the little finger, The perimeter of the inner toenail part is shorter than the perimeter of the outer toenail part, The ratio of the perimeter of the inner toenail part to the perimeter of the outer toenail part at the wide toe - side part is 70% to 75%, The ratio of the perimeter of the inner toenail part to the perimeter of the outer toenail part at the narrow - side part is 95% to 98%. The foot wear according to Claim 3.

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