CN120916666A - Article for wearing foot - Google Patents

Abstract

This invention provides a footwear that can be easily worn even when the feet are swollen due to lymphedema or the like, and can also be worn in normal times. The upper (10) is configured to be separated into an inner upper (110) and an outer upper (120), and the corresponding part of the instep (4) from the toe (2) to the foot opening (3) has an overlapping range (A) that overlaps with each other, and the inner upper (110) and the outer upper (120) in the overlapping range (A) do not join to each other. Therefore, when the foot is inserted through the foot opening (3), the inner upper (110) and the outer upper (120) can be displaced significantly to the outside, and can be easily put on even when the feet are swollen.

Description

Article for wearing foot

Technical Field

The present invention relates to a technique for improving and preventing edema and the like in an effective wearing article.

Background

There is a symptom called lymphedema, which is called lymphedema, in which the flow of the lymph fluid is deteriorated, and the lymph fluid leaks out from the lymphatic vessel and accumulates under the skin and in the limbs. In addition to congenital lymphatic vessel dysfunction, there are cases where the disease is caused by lymphatic vessels, lymph node excision, and the like, which are performed in cancer surgery and the like. In the prevention and treatment of lymphedema, appropriate exercise, lymphatic drainage, compression therapy, lymphatic venous anastomosis, and the like are effective, but it is difficult to recover in the case of resecting lymph nodes. If there is edema in the foot, it is sometimes difficult to put on the shoe worn before.

Patent document 1 discloses a shoe having a shoe body in which a cutout extending toward the toe is formed in the center of the instep, and a cover part that covers the cutout and can be attached to the instep via a hook and loop fastener. Even if a foot of a commercially available shoe is difficult to wear due to deformation, edema, or the like caused by rheumatism, if the cover is peeled off from the hook and loop fastener and put on the foot, the foot can be put on by enlarging the incision, and then the cover is attached to the instep portion via the hook and loop fastener.

Patent document 2 discloses a nursing shoe having a divided inner vamp and outer vamp, and having a tongue formed of a thin cloth connecting the two. Under the condition that the toes are swollen and edema, the medial vamp and the lateral vamp are expanded in a mode that the tongue stretches, and the foot is put in. After the foot is put in, the fastening sheet straddling between the inner vamp and the outer vamp is used by being joined via the fastening tape.

Prior art literature

Patent literature

Patent document 1, utility model registration No. 3191012

Patent document 2, utility model registration No. 3176164

Disclosure of Invention

Problems to be solved by the invention

The shoe of patent document 1 is enlarged by the incision provided in the center of the dorsum of the foot, and the shoe of patent document 2 is enlarged by the interval between the divided inner vamp and outer vamp, so that even the swollen foot can be easily put on. However, it is necessary to attach the tongue piece or the anchor piece to the instep portion via the hook and loop fastener after putting the foot into the shoe from the foot opening. When they are not joined to the instep, the shoe is easily detached when the ground is lifted by the toe, which is an obstacle to walking. However, depending on the degree of edema, there are cases where the back (instep) of the foot is too high or the foot width becomes too wide, and fixation by a tongue piece or a fixing piece is difficult. Further, after putting the foot into the shoe from the foot opening, the operation itself of engaging the tongue piece and the anchor piece by the hook and loop fastener is troublesome, and depending on the degree of edema, the degree of illness or age which causes the edema, or the like, the operation of engaging the tongue piece and the anchor piece may not be easily performed by bending itself forward.

The present invention has been made in view of the above-described circumstances, and an object thereof is to provide a wearing article that can be worn easily even when the foot is deformed due to edema, rheumatism, or the like, and that can be smoothly walked, and that is particularly suitable for improving or preventing lymphedema or venous return disorder, and preferably to provide a wearing article that can be worn even in a state where swelling is converging.

Means for solving the problems

In order to solve the above problems, the present invention provides a footwear comprising a sole and an upper fixed to the sole,

The upper is divided into an inner shoe surface portion and an outer shoe surface portion on a toe portion side, and has overlapping ranges overlapping each other in an instep correspondence portion from the toe portion to a foot wear, the inner shoe surface portion and the outer shoe surface portion in the overlapping ranges are not joined to each other in at least a predetermined range from the foot wear toward an outer edge portion on the toe portion side, and at least the inner shoe surface portion on an upper side or the outer edge portion on the toe portion side in the overlapping ranges is fixed to the sole.

Preferably, an outer edge portion on a toe side of the inner tread portion or the outer tread portion on an upper side of the overlapping range is disposed along an outer periphery of the sole in a range extending from an inner side or an outer side of the foot toward an opposite side at least to an apex of the toe portion, and is fixed to the sole.

More preferably, an outer edge portion on a toe side of the inner tread portion or the outer tread portion on the upper side of the overlapping range is disposed along an outer periphery of the sole in a range extending from the inner side or the outer side of the foot toward the opposite side to a position crossing an apex of the toe portion, and is fixed to the sole.

Preferably, the upper is formed using an elastic material, and a predetermined pressing pressure can be applied to at least one of the toe portion and the heel portion.

Preferably, the pressing pressure is 30mmHg or more.

Preferably, the inner dimension of the overlapping range in the non-wearing state of the toe height corresponding to the wearer's toe is not more than the height of the wearer's toe.

Preferably, the heel portion of the upper is shaped so as to be biased to a forward tilted posture when not worn, as compared with the tilt of the heel of the wearer.

Preferably, the upper is formed of a braid.

Preferably, the upper has a convex portion bulging in a thickness direction in at least a part thereof.

Preferably, the upper has a three-layer structure including an outer surface forming layer, an inner surface forming layer, and an intermediate layer between the outer surface forming layer and the inner surface forming layer, wherein the outer surface forming layer has relatively high stretchability compared to the inner surface forming layer, and the intermediate layer has relatively high cushioning properties in a thickness direction compared to the outer surface forming layer and the inner surface forming layer.

Preferably, the inner shoe surface portion and the outer shoe surface portion in the overlapping range have a portion having higher rigidity than a portion located closer to the foot opening than a portion located in a range from a boundary with the sole to a halfway position in a direction toward the foot opening.

The toe side end portion of the outer edge portion of the inner tread portion or the outer tread portion located on the lower side in the overlapping range may not be fixed to the sole.

The article of footwear of the present invention is useful for improving or preventing lymphedema or venous return disorders.

Effects of the invention

According to the present invention, the upper is configured to be separated into the inner shoe surface portion and the outer shoe surface portion on the toe portion side, and has an overlapping range overlapping each other in the instep correspondence portion from the toe portion to the foot wear, and the inner shoe surface portion and the outer shoe surface portion in the overlapping range are not joined to each other. Therefore, when the foot is inserted from the foot opening, the inner shoe surface portion and the outer shoe surface portion can be displaced to the outside by a large amount, and even the foot with edema can be put on easily.

In addition, at least the outer edge portion on the toe side of the upper inner shoe surface portion or the outer shoe surface portion in the overlapping range is fixed to the sole. Therefore, although the medial vamp portion and the lateral vamp portion in the overlapping range are not joined to each other at least in part, the force can be received when the toe is lifted during walking, and walking is not hindered. Therefore, according to the present invention, there is no need for a tongue piece or a fastening piece for connecting the shoe upper portions separated into two as in the conventional art, nor is there a need for an operation for fastening them when worn. Even patients with advanced edema, the elderly, or people with inconvenient hands can easily use the composition.

In addition, the structure in which the upper is formed of an elastic material and a predetermined pressing pressure can be applied to at least one of the toe portion and the heel portion is particularly suitable for improving or preventing lymphedema or venous return disorder.

Drawings

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

Fig. 2 is an exploded perspective view of the footwear according to the above embodiment.

Fig. 3 (a) is a sectional view taken along line I-I of fig. 1, and fig. 3 (b) is a sectional view taken along line II-II of fig. 1.

Fig. 4 is an enlarged view showing a structure in the vicinity of the toe of fig. 1.

Fig. 5 is a perspective view of another alternative article of footwear.

Fig. 6 is a perspective view of yet another alternative article of footwear.

Fig. 7 (a) is a sectional view taken along line III-III of fig. 6, and fig. 7 (b) is a sectional view taken along line IV-IV of fig. 6.

Fig. 8 is a cross-sectional view for explaining a mode in which the outer edge portion on the toe side of the inner shoe surface portion is not fixed.

Fig. 9 (a) is a side view and fig. 9 (b) is a plan view of a footwear according to another embodiment of the present invention.

Fig. 10 is a schematic view showing a state in which the wearing article of the foot according to the embodiment of fig. 9 is worn.

Fig. 11 (a) is a perspective view of the upper of the footwear according to the embodiment of fig. 9, as seen from the outer surface direction before the upper is fixed to the sole, fig. 11 (b) is a perspective view of the upper as seen from the inner surface direction, and fig. 11 (c) is a plan view of the upper in a state where the toe side is brought close before the upper is fixed to the sole.

FIG. 12 is a partial cross-sectional view of an upper.

Detailed Description

Hereinafter, embodiments of the present invention will be described with reference to the drawings. Fig. 1 and 2 are diagrams showing a footwear 1 according to an embodiment of the present invention. The footwear 1 is configured to have an upper 10 and a sole 20 integrated by various known methods such as sewing and bonding.

The upper 10 is configured to have a medial vamp portion 110 that mainly covers the medial side of the foot and a lateral vamp portion 120 that mainly covers the lateral side of the foot. The inner shoe surface portion 110 and the outer shoe surface portion 120 have an overlapping range a overlapping in a plan view at the instep corresponding portion 4 from the toe portion 2 to the foot wear 3. In the present embodiment, in the overlapping range a, the medial vamp portion 110 is located below the lateral vamp portion 120.

In the present embodiment, the lower inner shoe surface portion 110 in the overlapping range a covers the range from the toe portion 2 to the inner side of the foot of the heel portion 5. In the case where the portion corresponding to the arch of the foot is divided into a midfoot portion, a portion forward of the midfoot portion is divided into a forefoot portion, and a portion rearward of the midfoot portion is divided into a rearfoot portion, the inner shoe surface portion 110 may be configured to cover at least a range corresponding to the forefoot portion.

In the present embodiment, the outer sole 120 also covers the outer side of the foot from the toe portion 2 to the heel portion 5. The lateral tread portion 120 may be configured to cover at least the forefoot region, similar to the medial tread portion 110.

The outer tread portion 120 is joined so that the outer edge portion 121 is folded inward along the outer periphery of the sole 20 in the present embodiment (see fig. 3 (a) and (b)). The joining method is arbitrary, and various methods such as sewing and bonding can be used. As shown in fig. 4, the toe-side end 121A1 of the outer edge 121A of the outer edge 121 on the toe-2 side within the overlapping range a extends to a proper position beyond the opposite side of the apex 2a of the toe 2 (here, the inside of the foot).

The inner tread portion 110 is joined so that the outer edge portion 111 is folded inward along the outer periphery of the sole 20 in the present embodiment (see fig. 3 (a) and (b)). Of the outer edge portions 111, an outer edge portion 111A located within the overlapping range a on the toe portion 2 side is joined in overlapping relation with an outer edge portion 121A on the toe portion 2 side of the outer shoe surface portion 120. Therefore, in the present embodiment, the inner shoe surface portion 110 and the outer shoe surface portion 120 are joined to each other only at the outer edge portions 111A, 121A on the toe portion 2 side at the instep corresponding portion 4 extending from the toe portion 2 to the foot wear 3, and are joined to each other only in overlapping regions a. That is, as shown in fig. 4, the portions 114A, 124A located within the overlapping range a among the inner edge portions 114, 124 forming the foot through hole 3 can be separated vertically, respectively.

In the case of walking, when the heel is lifted up with the toe as the center, a portion to which the pressing force by the instep is applied is required. In the present embodiment, the outer edge portion 121A of the outer sole portion 120 on the toe portion 2 side is joined to the sole 20 at a position beyond the apex 2a of the toe portion 2. Therefore, when the heel is lifted up with the toe as the center, the outer sole portion 120 receives the pressing force generated by the instep. Therefore, the article of footwear can be prevented from falling off during walking.

In the present embodiment, the outer edge 111A of the medial vamp 110 on the toe 2 side is joined to the sole 20 together with the outer edge 121A of the lateral vamp 120 on the toe 2 side. Therefore, when the toe is stepped up during walking, the instep first comes into contact with the inner shoe surface portion 110, and then the inner shoe surface portion 110 comes into contact with the outer shoe surface portion 120. Accordingly, the pressing force applied from the instep during walking is received and dispersed not only by the lateral tread portion 120 but also by the medial tread portion 110, and thus, the feeling of discomfort during walking can be suppressed.

The edges 112 and 122 of the medial and lateral shoe parts 110 and 120 on the heel 5 side are joined (see fig. 1). The joining method is optional, and sewing, bonding, or the like may be used. However, the medial vamp 110 and the lateral vamp 120 may be separated on the toe side and not joined to each other in the overlapping range a as described above, or may be formed integrally with the medial vamp 110 and the lateral vamp 120 without being separated on the heel 5 side.

In addition, when the inner shoe surface portion 110 and the outer shoe surface portion 120 are limited to the range from the front side of the heel portion 5, such as the range of only the forefoot portion or the range of only the midfoot portion, the edges 112 and 122 are not joined to each other, and are provided so that the rear sides of the edges 112 and 122 are open, for example, as in a sandal.

As the inner shoe surface portion 110 and the outer shoe surface portion 120, a material composed of a fiber, a thread, or the like that exhibits deodorizing, and antibacterial functions is preferably used. As such a material, various known materials can be used, and various materials such as a material in which the fiber itself is weakly acidic by polymer modification, a material in which the polymer itself is modified with a deodorant, a material in which a deodorant is attached to the surface of the fiber with a binder, a material in which a function of adsorbing a smell component and decomposing with a metal ion is imparted, and the like can be used.

Medial vamp 110 and lateral vamp 120 are preferably constructed with an elastic material. Medial vamp 110 and lateral vamp 120 may be formed entirely of an elastic material, or may be formed of a portion including an elastic material. As the elastic material, a material having a predetermined elasticity such as rubber or synthetic resin is used. The medial vamp 110 and the lateral vamp 120 may be formed of knitted fabric and may be formed of mesh expansion and contraction. The yarn constituting the braid may be a yarn including an elastic yarn.

The inner shoe surface portion 110 and the outer shoe surface portion 120 are preferably configured such that a predetermined range B from the boundary between the sole 20 and the outer edge portions 111 and 121 to a position midway in the direction toward the foot opening 3 formed by the inner edge portions 114 and 124 of the inner shoe surface portion 110 and the outer shoe surface portion 120 has a portion having higher rigidity than a range C closer to the foot opening 3 (see fig. 5). The range B may have a higher rigidity than the range C in its entirety, or may have a structure in which a part thereof has a higher rigidity than the range C. By providing the structure with the portion having high rigidity, it is easier to withstand the pressing force by the instep when the tip of the foot is lifted during walking. However, if the rigidity is too high, a touch feeling or an uncomfortable feeling is generated, and thus, the degree of such a touch feeling or the like is not generated. As a method for improving rigidity, for example, the material constituting the medial vamp portion 110 and the lateral vamp portion 120 may be heated in the range B, partially softened, and then solidified. In addition, when the knitted fabric is formed, the mesh size and the thread material can be made different between the range B and the range C. Further, a line having a glass transition temperature different from that of the line C may be used in the range B, and the line may be heated at a temperature at which only the line is softened and then cured, whereby a portion having high rigidity may be provided in the range B. In addition, a film or the like having higher rigidity than the range C may be fixed in the range B. Further, the materials constituting the range B and the range C may be different, and the range B may be made of a material having higher rigidity than the range C, or the range C may be made of a material having higher elasticity than the range B.

As shown in fig. 6 and fig. 7 (a) and (b), the inner surfaces 113 and 123 of the inner shoe surface portion 110 and the outer shoe surface portion 120 are preferably configured to have at least a part with protruding portions 113a and 123a protruding in the thickness direction. By providing the protruding portions 113a and 123a, the foot-fixing function is exerted by the foot being brought into close contact during walking, and the instep (particularly, the medial side and the lateral side) is stimulated, so that the flow of lymph is promoted, and improvement of edema can be facilitated. In walking, the convex portions 113a and 123a repeatedly come into contact with each other every time the foot is stepped, and thus are effective in promoting the flow of lymph fluid.

For example, in the case where the medial vamp portion 110 and the lateral vamp portion 120 are formed of a braid, the protruding portions 113a, 123a can be formed by inserting a inlay wire at the portions where the protruding portions 113a, 123a are formed. Further, as the inner shoe surface portion 110 and the outer shoe surface portion 120, an object may be used, in which a cushion material such as cotton or foamed resin is disposed between a pair of cloths made of knitted fabric or woven fabric, and the portions corresponding to the protruding portions 113a and 123a are formed in a bulged quilted shape by being pressed with stitches. In the case where the inner shoe surface portion 110 and the outer shoe surface portion 120 are formed of synthetic resin sheets, the protruding portions 113a and 123a may be formed by fixing a cushion material to the sheets, or the sheets and the cushion material to be the protruding portions 113a and 123a may be integrally molded.

Further, a lining (not shown) made of a member independent of the medial vamp portion 110 and the lateral vamp portion 120 may be provided, and a convex portion may be provided on the lining. In the case of forming a lining from a woven fabric, the protruding portion may be formed by inserting a inlay wire or may be formed by using a method of forming a quilted substrate. Further, the protruding portion may be formed by integrally molding a sheet serving as a lining material.

As described above, the inner shoe surface portion 110 and the outer shoe surface portion 120 constituting the upper 10 intersect with each other so as to have the overlapping region a, and as shown in fig. 1, 4 to 6, the region surrounded by the inner edge portions 114 and 124 including the intersection 6 becomes the foot opening 3. That is, the shape of the foot opening 3 varies according to the crossing angle of the inner edge portions 114 and 124 of the inner shoe surface portion 110 and the outer shoe surface portion 120, in addition to the shape of the two. For example, the intersection angle of the inner edge portions 114 and 124 may be an acute angle or an obtuse angle, and the exposed areas of the instep may be designed differently. The intersecting portion may be formed in an arc shape according to the shape of the inner edge portions 114, 124, or may be formed in a shape in which a substantially straight portion is formed in the width direction of the article of footwear. Further, the inner edge portions 114 and 124 can be formed into a wave shape or the like as shown in fig. 1, thereby improving the design.

In addition, the vicinity of the inner edge portions 114, 124 constituting the periphery of the foot opening 3 is preferably made high in stretchability in the direction along the surface. In this way, the inner edge portions 114 and 124 are stretched to be easily put on the foot, and are fitted around the ankle of the wearer, so that the foot can be prevented from falling off during walking. In view of the fact that the upper 10 is formed with portions having different characteristics, such as the inner edge portions 114, 124 and the protruding portions 113a, 123a, which have high stretchability, the upper 10 is preferably formed of a knitted fabric. For example, by forming the protruding portions 113a and 123a by inserting inlaid strands while knitting with plain knitting and by forming rib knitting in the vicinity of the inner edge portions 114 and 124, stretchability in the circumferential direction of the foot opening 3 can be improved, and the desired upper 10 can be produced by changing the knitting structure as described above.

The sole 20 is joined to the outer edge portions 111 and 121 of the inner shoe surface portion 110 and the outer shoe surface portion 120 constituting the upper 10 by sewing, bonding, or the like as described above, to form the footwear 1. The sole 20 may be made of various known soles such as synthetic resin, rubber, wood, leather, etc. The sole 20 may be a sole composed of only an outsole, a sole applied to a sports shoe or the like having a midsole in addition to an outsole, a sole applied to a leather shoe or the like having an insole, an underfilling (bottom filling) or the like in addition to an outsole, a sole with a heel, or the like. In the present embodiment, the outer edge 111 of the medial vamp portion 110 and the outer edge 121 of the lateral vamp portion 120 are each folded inward to be joined to the sole 20. Accordingly, in order to prevent discomfort during wearing, the insole may be disposed so as to cover the outer edge portions 111 and 121.

As shown in fig. 6, it is preferable that the bulge 130 is provided in the vicinity of the upper edge portion of the heel 5 (the portion corresponding to the achilles tendon) in the medial vamp 110 and the lateral vamp 120 separately from the convex portions 113a and 123 a. The bulge 130 can be formed using a wire rod and a cushion material, as in the case of the projections 113a and 123 a. Can support the vicinity of achilles tendon, and can improve the sense of fit, thereby preventing falling off during walking.

In the case of using the footwear 1 of the present embodiment, the user inserts his/her foot through the foot opening 3. When the foot is put in, the inner shoe surface portion 110 and the outer shoe surface portion 120 are not joined to each other in the overlapping range a, and therefore the inner shoe surface portion 110 and the outer shoe surface portion 120 are greatly expanded outward. After the foot is put in, the outer edge portions 111A and 121A on the toe portion 2 side of the inner shoe surface portion 110 and the outer shoe surface portion 120 are joined to the sole 20, and therefore, they are restored to the original state. In particular, if the toe end 121a1 of the outer shoe surface 120 is located on the opposite side beyond the apex 2a of the toe 2 as in the present embodiment, the force applied in the direction of the inner shoe surface 110 acts more strongly when expanding outward. Further, if the toe side end 111a1 of the inner shoe surface portion 110 is also located on the opposite side of the apex 2a of the toe portion 2, the force to return to the original position after expanding outward is preferably exerted more strongly. Therefore, after the foot is put in, the outer shoe surface 120 and the inner shoe surface 110 are brought into close contact with the surface of the foot because they are restored to the original state.

For example, in a normal state in which lymphedema does not occur in one foot, when the other foot has a large foot circumference due to lymphedema, if one foot is first put in from the foot opening 3, the inner shoe surface portion 110 expands outward in accordance with this, and can be put in easily. When another foot with lymphedema is put in from the foot opening 3, the inner shoe surface portion 110 and the outer shoe surface portion 120 are not joined to each other in the overlapping range a, and therefore, spread more toward the outer side, and even if the foot swells, the foot can be easily put on.

In the worn state, since the forces to return to the original positions are applied to both the medial vamp 110 and the lateral vamp 120, both the non-edematous foot and the edematous foot are in close contact with the surface of each foot. The medial vamp 110 and the lateral vamp 120 are in close contact with each other during walking, regardless of the presence or absence of edema, and therefore can withstand the force of the instep when the tip of the foot is lifted, and no obstacle is caused to walking. During walking, the convex portions 113a and 123a press and stimulate the surface of the foot by the movement of the center of gravity between the pedaling action of the toe, the landing action of the heel. Thus, the improvement of the flow of lymph fluid is promoted, and swelling is suppressed.

When putting on the footwear 1, the inner shoe surface portion 110 and the outer shoe surface portion 120 are not joined to each other in the overlapping region a, and are greatly expanded to the outside, so that both the foot without edema and the foot with edema can be easily put off. Therefore, the wearing article 1 according to the present embodiment can be worn in a state where no edema has occurred in both feet, and can be worn even if edema occurs in one or both feet, contributing to a reduction in the economic burden on the patient. Further, by forming the shape in the vicinity of the intersection 6 of the inner tread portion 110 and the outer tread portion 120, the shape of the inner edge portions 114 and 124, and the like, into various shapes, a shape rich in design can be provided, and the wearer can wear the shoe with awareness that is not changed from that of a normal shoe without awareness such as edema and therapeutic use.

In the above embodiment, the outer edge 111A on the toe 2 side of the inner shoe surface portion 110 located below the outer shoe surface portion 120 is fixed to the sole 20 together with the outer edge 121A on the toe 2 side of the outer shoe surface portion 120, but as shown in fig. 8, the outer edge 111A on the toe 2 side of the inner shoe surface portion 110 may be configured so as not to be fixed to the outer edge 121A on the toe 2 side of the outer shoe surface portion 120 and the sole 20 in the overlapping range a with the outer shoe surface portion 120.

In this case, when the inner shoe surface portion 110 is expanded outward, the toe side end 111A1 of the outer edge portion 111A is positioned on the extension line of the inner edge portion 114 (see fig. 2), so that when the inner edge portion 114 is expanded outward, the toe side end 111A1 side also moves so as to incline outward, and tends to expand more greatly. Therefore, a greater degree of swelling can be handled. Even if the inner shoe portion 110 is greatly expanded outward, since the outer shoe portion 120 is positioned above the inner shoe portion 110, the inner shoe portion 110 is brought into close contact with the surface of the foot following the restoring force of the outer shoe portion 120 after the foot is put in. Since the outward expansion of the inner tread portion 110 is pressed by the outer tread portion 120 during walking, the pressing force by the instep during pedal-up of the toe can be received, and walking is not hindered.

In the above embodiment, the outer edge portions 111 and 121 of the inner shoe surface portion 110 and the outer shoe surface portion 120 are each folded inward and joined to the sole 20, but this is merely an example, and it is needless to say that the outer edge portions may be folded outward and joined to the sole 20, and may be fixed by other members for fixing to the sole 20, not limited thereto.

Fig. 9 to 11 show a footwear 1' according to another embodiment of the present invention. The same portions as those of the above embodiment are denoted by the same reference numerals. In this embodiment, as shown in fig. 11 (a) and (b), the upper 10 is fixed to the sole 20 by using a material in which the inner shoe surface portion 110 and the outer shoe surface portion 120 are integrated, the toe portion 2 side of which is separated, but the heel portion 5 side of which is not separated. The upper 10 is formed into a quilted shape by inserting an inlaid wire, and has portions protruding inward and outward, wherein the portions protruding inward correspond to the protrusions 113a and 123a in the above embodiment, while using a knitted fabric with elastic threads knitted therein. The material of the upper 10 shown in fig. 11 (a) and (b) is such that the inner shoe surface portion 110 and the outer shoe surface portion 120 are brought close to each other in plan view around the heel portion 5 as shown in fig. 11 (c), and an overlapping range a where both overlap is formed as shown in fig. 5 and 6 in the above embodiment, thereby forming the upper 10.

However, in the above embodiment, the overlapping range a is a structure in which the outer edge portions 111A, 121A from the foot hole 3 to the toe portion 2 side are not joined to each other, but in the present embodiment, the range A2 near a part of the toe portion 2 is joined to each other. In the present embodiment, the joining is performed by sewing, but the joining method is arbitrary such as welding. This is to exert rigidity against a pressing force by the instep during a walking step, and to set the internal dimension h1 of the toe height to be described below to a predetermined value or less in a non-worn state, but the present embodiment and the above-described embodiment are both structures that are not joined to each other in at least a predetermined range (a range other than the range A2 in the present embodiment, a range near the toe opening 3, and substantially all the ranges in the above-described embodiment) from the toe opening 3 toward the outer edge portions 111A, 121A of the toe portion 2.

Fig. 9 (a) is a side view and fig. 9 (b) is a plan view showing a state in which the upper 10 is fixed to the sole 20. As shown in fig. 9 (a) and (b), in the present embodiment, in the overlapping range a of the inner shoe surface portion 110 and the outer shoe surface portion 120 on the toe portion 2 side, the inner dimension h1 of the toe height when not worn is formed to be equal to or smaller than the height h2 of the toe (toe) of the wearer, and the inner dimension h1 of the toe height when not worn is the distance from the bottom surface (the surface of the insole contacted by the sole of the wearer) in the toe corresponding range A1 corresponding to the toe (toe) of the wearer.

As shown in fig. 9 (a), the elastic force of the material of the upper 10 is applied such that the heel 5 of the upper 10 is inclined forward by a predetermined angle θ when not worn, as compared with the direction of inclination of the heel of the wearer (inclination along the rear surface of the heel with the top O protruding furthest rearward of the rear surface of the heel as the center toward the ankle).

The wearer's toe height and heel inclination are different from each other. In the case of the customization, data of a specific individual can be used, but in the case of the customization, for example, values of the toe height and the heel inclination can be statistically obtained in advance in accordance with the foot length and the foot circumference, and the design can be made with a highly versatile value based on the values. However, in the case of a lymphedema patient, since there is a large individual difference and there is also a difference between left and right, it is preferable to design by customization.

According to the present embodiment, when the wearer puts in the foot, in the toe correspondence range A1 in the overlapping range a, the toe height h1 is raised to the toe height h2 of the wearer. Accordingly, as shown in fig. 10, the reaction force acts on the wearer's toe, and a pressing pressure P1 is generated. Further, since the heel 5 is along the heel inclination angle θ of the wearer, the elastic force generated by the reaction force of the heel 5 acts to apply a force in a direction of pushing the heel of the wearer forward. Thereby, a predetermined pressing pressure P2 is also applied to the heel of the wearer.

As shown in fig. 10, the elastic stocking is mostly of the type with exposed toes. The type in which the toe is not exposed is also difficult to wear, and therefore the types in which the pressing pressure at the toe is not so high are more. The heel is also the same, the compression pressure of the elastic stocking to the heel is not so high. In contrast, according to the footwear 1' of the present embodiment, the predetermined pressing pressures P1 and P2 can be applied to the toe and heel. Therefore, the footwear 1' according to the present embodiment can compensate for the shortage of the pressing pressure caused by the elastic stocking by wearing the elastic stocking. Therefore, improvement and prevention of lymphedema and the like can be promoted.

For improving and preventing lymphedema and venous reflux disorder, the pressing pressures P1 and P2 generated in the toe-corresponding range A1 and the heel 5 are preferably 30mmHg or more. More preferably in the range of 30 to 60 mmHg. These pressing pressures P1 and P2 can be adjusted by the knitting method used as the material of the upper 10, the number of elastic threads to be inserted, the material of the elastic threads, the diameter of the elastic threads, and the like, and can be adjusted by the protruding amounts of the protruding portions 113a and 123a, the elasticity of the inlaid strand, the foamed resin, and the like, which form the protruding portions 113a and 123a, and the like. The internal dimension h1 of the toe height in the toe-corresponding range A1 when not worn and the angle θ of the forward tilting posture of the heel 5 of the upper 10 can be adjusted.

In the above description, it is preferable to adjust both the inner dimension h1 of the toe height when not worn and the angle θ of the forward leaning posture of the heel 5 in terms of being able to apply a predetermined pressing pressure to both the toe and the heel of the stocking, but it is preferable to have only either one of the configurations, and it is possible to compensate for the improvement or prevention effect of lymphedema or the like by the stocking, and these are all aspects included in the present embodiment. In addition, as a product classified as an elastic stocking, there is a dedicated product called "toe pressure stocking (toe cap)" or "foot pressure stocking (foot cap)" covering the toe. This is used to compensate for the pressing pressure of the toe, in the case of using an elastic stocking whose toe is not covered, an elastic stocking whose pressing pressure at the toe is insufficient, or the like as described above. However, for example, when going out, the work of putting on the toe pressure sock or the like in addition to the elastic stocking and putting on the shoe is troublesome, and the shoe content is easy to be stuffy according to walking time. According to the present embodiment, since the footwear 1' itself can apply the predetermined pressing pressures P1 and P2, it is unnecessary to put on the "toe pressure sock", and the like, the trouble of wearing is reduced, and the wearer is less prone to stuffiness. However, the use of the toe pressure sock is not hindered, and in this case, there is an advantage that the insufficient pressing pressure can be compensated by the toe pressure sock or the like.

In the present embodiment, a spacer (not shown) may be provided between the big toe and the other 4 toes, between the toes, or the like in the toe corresponding range A1, and a predetermined pressing pressure may be applied between the toes by forming a convex portion in the spacer.

In addition, a predetermined pressing pressure may be applied to the portion other than the toe-corresponding region A1 and the heel portion 5 when the wearer wears the shoe. However, if the compression pressure in the portion other than the toe-corresponding range A1 and the heel 5 is too high, it is difficult to put on the foot, and therefore, it is preferable to design the pressure to be about 5 to 30mmhg, for example, so that the compression pressure in the portion other than the toe-corresponding range A1 and the heel 5 is reduced.

As described above, the upper 10 preferably has the protruding portions 113a and 123a, but as shown in fig. 12, the cross-sectional structure of this portion is a three-layer structure including the outer surface forming layer 10a forming the outer surface of the upper 10, the inner surface forming layer 10b forming the inner surfaces 113 and 123 of the upper 10, and the intermediate layer 10c between the outer surface forming layer 10a and the inner surface forming layer 10b, and among these, the outer surface forming layer 10a preferably has a relatively higher stretchability than the inner surface forming layer 10 b. The intermediate layer 10c is preferably configured to have a relatively high cushioning property (impact absorbability) in the thickness direction as compared with the outer surface formation layer 10a and the inner surface formation layer 10 b. For example, by adjusting the material, diameter, number of used elastic threads, etc. used when knitting each knitted fabric of the outer surface forming layer 10a and the inner surface forming layer 10b, the modulus of elasticity for elongation of the outer surface forming layer 10a can be made relatively higher than the modulus of elasticity for elongation of the inner surface forming layer 10 b. In the case where the modulus of elasticity of elongation of the inner surface forming layer 10b is higher than that of the outer surface forming layer 10a, which is the opposite relationship, the resistance when putting on the foot becomes too strong, and it becomes difficult to put on. In particular, as described above, for lymphedema patients and the like, it is preferable that the angle θ of the forward leaning posture of the heel 5 of the upper 10 is increased as the inner dimension h1 of the toe height is decreased and the upper is substantially more difficult to put on, because the external surface forming layer 10a has a relatively higher modulus of elasticity than the internal surface forming layer 10 b.

The intermediate layer 10c may be configured to have a structure in which thick threads and knitting yarns are inserted as inlay wires so as to be stacked in plural, or to have an increased number of elastic threads inserted, for example, to adjust the elasticity in the thickness direction and to improve the cushioning property. When the outer surface forming layer 10a, the inner surface forming layer 10b, and the intermediate layer 10c are formed of knitted fabrics, knitting of each knitted fabric, insertion of inlay yarn, and the like can be adjusted, and continuous knitting can be performed by a knitting machine, which is preferable.

However, even when the outer surface forming layer 10a and the inner surface forming layer 10b are formed of, for example, woven fabrics, nonwoven fabrics, or the like, the outer surface forming layer 10a may have a higher modulus of elasticity in elongation than the inner surface forming layer 10b, and cotton, foamed resin, or the like may be used as the intermediate layer 10c, so that the cushioning properties in the thickness direction are higher than those of the outer surface forming layer 10a and the inner surface forming layer 10 b.

The above-described footwear 1, 1' may be any of an external footwear and an indoor footwear.

Reference numerals illustrate:

1. 1' article of foot wear

2. Toe portion

3. Foot wearing mouth

4. Instep corresponding part

5. Heel portion

10. Shoe upper

10A outer surface Forming layer

10B inner surface forming layer

10C intermediate layer

110. Medial vamp portion

111. Outer edge portion

111A toe side outer edge portion

112. End edge

113. Inner surface

113A convex part

114. Inner edge part

120. Lateral vamp

121. Outer edge portion

121A toe side outer edge portion

122. End edge

123. Inner surface

123A convex portion

124. Inner edge part

20. Sole of shoe

A overlap range.

Claims (13)

1. A footwear comprising a sole and an upper secured to the sole, wherein,

The upper is divided into an inner shoe surface portion and an outer shoe surface portion on a toe portion side, and has overlapping ranges overlapping each other in an instep correspondence portion from the toe portion to a foot wear, the inner shoe surface portion and the outer shoe surface portion in the overlapping ranges are not joined to each other in at least a predetermined range from the foot wear toward an outer edge portion on the toe portion side, and at least the inner shoe surface portion on an upper side or the outer edge portion on the toe portion side in the overlapping ranges is fixed to the sole.

2. The article of footwear according to claim 1, wherein,

The outer edge portion on the toe side of the inner shoe surface portion or the outer shoe surface portion located on the upper side of the overlapping range is disposed along the outer periphery of the sole in a range extending from the inner side or the outer side of the foot toward the opposite side at least to the apex of the toe portion, and is fixed to the sole.

3. The article of footwear according to claim 2, wherein,

The outer edge portion on the toe side of the inner shoe surface portion or the outer shoe surface portion on the upper side of the overlapping range is disposed along the outer periphery of the sole in a range extending from the inner side or the outer side of the foot toward the opposite side to a position beyond the apex of the toe portion, respectively, and is fixed to the sole.

4. The article of footwear according to claim 1, wherein,

The upper is formed using an elastic material, and can apply a predetermined pressing pressure to at least one of the toe portion and the heel portion.

5. The article of footwear according to claim 4, wherein,

The pressing pressure is more than 30 mmHg.

6. The article of footwear according to claim 4, wherein,

The inner dimension of the overlapping range in the non-wearing state of the toe height corresponding to the wearer's toe is not more than the height of the wearer's toe.

7. The article of footwear according to claim 4, wherein,

The heel portion of the upper is shaped so as to be biased to assume a forward leaning posture when not worn, as compared to the leaning of the heel of the wearer.

8. The article of footwear according to claim 1, wherein,

The upper is formed from a knit.

9. The article of footwear according to claim 1, wherein,

The upper has a convex portion that bulges in the thickness direction in at least a part thereof.

10. The article of footwear according to claim 4, wherein,

The upper is configured by a three-layer structure including an outer surface forming layer, an inner surface forming layer, and an intermediate layer between the outer surface forming layer and the inner surface forming layer, wherein the outer surface forming layer has relatively high stretchability compared to the inner surface forming layer, and the intermediate layer has relatively high cushioning properties in the thickness direction compared to the outer surface forming layer and the inner surface forming layer.

11. The article of footwear according to claim 1, wherein,

The inner shoe surface portion and the outer shoe surface portion in the overlapping range have portions having higher rigidity than a range located closer to the foot opening than the range from a boundary with the sole to a halfway position in the foot opening direction.

12. The article of footwear according to claim 1, wherein,

The toe side end portion of the outer edge portion of the inner shoe surface portion or the outer shoe surface portion located on the lower side in the overlapping range is not fixed to the sole.

13. The article of footwear according to claim 4, wherein,

The article of footwear is useful for ameliorating or preventing lymphedema or venous return disorders.