Footwear

Abstract

To provide a piece of footwear that is applicable to a foot condition of each elderly, that facilitates taking on and off, and that is comfortable to wear.SOLUTION: A piece of footwear is provided with an instep part 2 that has an opening 25, and with a bottom part 4. The instep part 2 includes a toe part 21, a side part 22, and a heel part 23. The heel part 23 supports the rear of the heel and includes: a heel curve part 230 which bends in a width direction; a step part 231 which is formed in the upper part from a lower end of the heel curve part 230 and which is formed projectingly to an outer side, in the heel curve part 230; a guide part 232 which is formed in a heel upper end situated in a rear end part of the opening 25 and which expands rearward; and, as an inner package, a hard core material 233 which has a projection 2331 corresponding to the step part 231 of the heel part 23 and which is provided with a guide core part 2332 for maintaining a shape of the guide part 232.SELECTED DRAWING: Figure 1

Description

[Technical field]

[0001] The present invention relates to footwear having a guide portion that opens out toward the rear of the main body to guide the insertion of the heel, and more specifically, to a slip-on type structure with a high toe box and ample space for the toes to fit in. [Background technology]

[0002] If footwear is designed to be difficult to slip off while walking, it tends to take time to put on and take off, making it difficult to do so. On the other hand, if it is designed to be easy to put on, it may be easy to slip off while walking. Even for healthy people, putting on and taking off footwear is often troublesome and time-consuming, especially when they are busy. For example, when putting on and taking off footwear requires the strength of the hands, people who are physically disabled and have difficulty bending forward or who have limited freedom of movement in their arms and legs are forced to make the most painful physical movements, and it is by no means easy to put on and take off footwear.

[0003] There are known shoes that can be easily put on by simply sliding the foot in without using a shoe horn or bending down to put on the shoes. For example, there is a known shoe that has a rigid part at the heel including the rear edge of the opening edge that forms the opening edge, where a guide part is formed so as to become lower from the opening edge toward the front, and a flexible member of uniform thickness on the inside of the shoe relative to this rigid part, so that the sole of the foot can slide in the heel part when putting on the shoes (Patent Document 1). There is also a known shoe that can be put on without using hands or a shoe horn (Patent Document 2). [Prior art documents] [Patent documents]

[0004] [Patent Document 1] Utility Model Registration No. 3212460 [Patent Document 2] Patent Publication No. 2022-139151 Summary of the Invention [Problem to be solved by the invention]

[0005] The present invention aims to provide footwear that is easy to put on and take off and is comfortable to wear, and can accommodate the individual foot conditions of the elderly and people with foot injuries and illnesses (hereinafter referred to as "elderly people, etc."). The objective is to provide footwear that allows easy putting on and taking off (simply slip one foot into the foot and take off by hooking the other foot), puts less strain on the toes, and keeps the toes comfortable while walking. [Means for solving the problem]

[0006] The present invention relates to the following footwear (1) to (5). (1) Footwear comprising an upper portion having an opening and a sole portion, the upper portion having a toe portion, a foot side portion, and a heel portion, the heel portion supporting the rear of the heel and having a heel curve portion curved in the width direction, a step portion formed in the heel curve portion higher than the lower end of the heel curve portion and protruding outward, and a guide portion formed at the upper end of the heel portion located at the rear end of the opening and expanding rearward, the footwear characterized in that it has an internal hard core material having a protrusion corresponding to the step portion of the heel portion and a guide core portion for maintaining the shape of the guide portion. (2) Footwear as described in (1) above, in which the step portion is formed above the lower end of the heel curve portion, allowing the toes to hook onto it and push it upward from below. (3) Footwear as described in (1) above, wherein the guide core portion has relatively thick peaks and relatively thin valleys in a horizontal cross section, and the peaks and valleys are alternately formed in the width direction. (4) Footwear as described in (1) above, characterized in that the upper portion has a slip-on type structure with a high toe box and ample room for the toes, the structure being composed of a toe portion, a tongue portion extending diagonally upward into the opening from the vicinity of the opening toward the rear end, a foot side portion, and a heel portion. (5) Footwear as described in (1) above, in which the upper portion is formed by sewing together a pair of identical pieces of fabric, each of which is made by sewing together two pieces of fabric at the sides of the foot, at the center portion in the longitudinal direction of the upper portion. Effect of the Invention

[0007] According to the present invention, a wide opening is formed at the upper end of the instep for putting the foot in and out, and in combination with this wide opening, a heel portion having a step portion and a guide portion is included, allowing for easy operation for putting on and taking off (simply slip one foot in and take off by hooking the other foot), and the instep portion is easy to put on and take off, making it possible to provide footwear that is comfortable to wear, easy to put on and take off, and can be adapted to the individual foot conditions of the elderly, etc. In particular, according to the present invention, the heel portion has a step formed on the outer surface of the heel curve portion that protrudes outward, and the user or caregiver can hook their fingers on the step and pull the heel portion up or down, making it easier to put on and take off the footwear. [Brief description of the drawings]

[0008] [Figure 1] FIG. 2 shows an external view (left side view) of footwear (right foot) having a guide portion according to an embodiment of the present invention, as viewed from the left. [Diagram 2] FIG. 2 shows an external view (plan view) of footwear (right foot) having a guide portion according to an embodiment of the present invention. [Diagram 3] FIG. 2 is a perspective view of footwear (right foot) having a guide portion according to an embodiment, viewed from above and rear on the left side. [Figure 4] FIG. 13 is a diagram showing a scene in which a caregiver hooks his or her fingers on a step to remove footwear. [Diagram 5] FIG. 2 is a perspective view of the hard core material (moon-shaped core) installed in the footwear (right foot) of FIG. 1, seen from the left rear. [Figure 6] FIG. 2 shows an external view (left side view) of the hard core material (moon-shaped core) installed in the footwear (right foot) of FIG. 1 as seen from the left. [Figure 7] FIG. 2 shows an external view (rear view) of the hard core material (moon-shaped core) installed in the footwear (right foot) of FIG. 1, seen from the rear. [Figure 8]FIG. 2 is an external view (perspective view) of the hard core material (moon-shaped core) installed in the footwear (right foot) of FIG. 1, seen from above and behind. [Figure 9] 9 shows a cross-sectional view taken along line IX-IX in FIG. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0009] [Instep] The upper part is the part above the bottom (sole member), and is a general term for the part consisting of the upper part including the toes, the side part of the foot (waist part), and the heel part, and is synonymous with upper. In the present invention, the upper part is a deep upper part composed of the toes, the side part of the foot, and the heel part having a guide part. The upper end of the upper part forms an opening part for putting the foot in and out, and combined with the wide opening, it is easy to put on and take off the shoes.

[0010] [Cloth material] The upper part is made of a cloth material so that it feels good on the foot. There are no particular restrictions on the cloth material, so long as it is a cloth material that can be sewn and is normally used. By making it from cloth, it is possible to obtain a good feel and stable comfort, and it fits the foot securely. In order to reduce shock, it is desirable to layer and sew a lining fabric on the cloth material in which urethane foam is attached to the outer fabric of the upper part, and to provide cushioning. For example, a thick fabric in which sponge cloth is attached to knit is a preferable material. The lining fabric is preferably a durable knit fabric with a slippery property so that it is easy to put on. It is preferable to make it from a stretchy cloth material so that the opening can be further enlarged while maintaining such a fit or hold. Furthermore, by making it a cushioned heel, it can be made to fully fit the shape of the heel / foot of the wearer.

[0011] [Sewing at center of instep length] The fabric footwear of the present invention preferably has a stitching at the longitudinal center of the upper. To ensure that the opening is a three-dimensional shape, the stitching is at the longitudinal center of the upper. As a result, the opening is always wide open.

[0012] [High instep] In addition, the toe box of the cloth footwear of the present invention is high, so the toes are not easily strained. Moreover, the area around the toes is kept comfortable while walking.

[0013] [Wide opening] The opening (opening) of the cloth footwear of the present invention is formed at the upper end of the instep with a wide opening for putting the foot in and out, and a guide part of the wide opening is supported by the heel part. The heel part is a gentle cushioned heel that provides shock absorption and cushioning, and has a guide part shaped to slide the foot diagonally downward forward while maintaining a good fit or hold, thereby exposing the opening in the longitudinal direction.

[0014] In order to further expand the wide opening (mouth), the tongue of the fabric extends obliquely upward from the opening periphery toward the rear end. The tongue of the fabric is a means for opening the instep, which is located in the instep where the entire instep is deep, and serves to expose the opening further in the longitudinal direction of the insole. In order to accommodate swelling, edema, and deformation of the foot, it is desirable to have an opening (mouth) large enough to expose, for example, about 1 / 2 of the longitudinal direction of the insole.

[0015] [Protruding step and guide on the outside of the heel] For physically unwell people, putting on and taking off footwear takes more time than a healthy person, especially in a life different from their everyday environment, so the heel part has a structure that makes it easy to put on and take off the footwear by having an outwardly protruding step and guide part, combined with a wide opening. The heel part has a curved part that curves in the width direction to support the back of the heel, and a step part that is formed to wrap around the width direction of the curved part and protrudes outward from the rear surface of the curved part. The step part has the function of helping the user to put on and take off the footwear by hooking the other foot or fingers (hand) and pulling up or down the heel part, or the function of helping the caregiver to hook the fingers or hand (for example, by placing the index finger and middle finger along the step part and pinching the step part between the index finger and middle finger) and pulling up or down the heel part.

[0016] In addition, the heel guide is shaped so that an opening that widens toward the rear of the body is exposed in the longitudinal direction at the top end of the heel located at the rear end of the opening, and the foot slides diagonally downwards forward. When putting the foot into the shoe, the heel of the foot hits the inclined part and slides diagonally downwards forward, so the shoe can be put on while standing without using hands. After putting the shoe on, the shoe is firmly fixed to the foot, so there is no need to worry about it coming off or falling over when walking. This footwear is particularly suitable for physically disabled elderly people for whom walking is the best form of exercise, but it is also convenient for ordinary healthy people.

[0017] [Moon-shaped core with built-in heel] The heel section of the present invention has a heel curve section that supports the rear of the heel and curves in the width direction, a step section formed on the outer surface of the heel curve section that protrudes outward, and a guide section formed on the upper end of the heel section located at the rear end of the opening and expanding toward the rear of the main body. In the present invention, the heel section has a hard moon-shaped core that is sandwiched between an exterior material (for example, a cloth material in which urethane foam is bonded to an outer cloth) and an interior material (for example, a lining cloth, and if necessary, a cloth material in which urethane foam is bonded to the lining cloth).

[0018] [Bottom] The sole is made of a foamed or non-foamed material that has low specific gravity, cushioning properties, and elasticity, such as synthetic resin or rubber, which has a relatively high flexural modulus. The insole and outsole can also be made of different materials. In this case, the insole can be made of a material that is good at absorbing impacts from the floor, such as low-resilience foam, and the outsole can be made of a material that is flexible but has excellent friction resistance. Preferred examples include foams of ethylene-vinyl acetate copolymer and polyethylene, but the friction resistance can be improved by mixing a rubber material. Molding of sole members using such foams is carried out by mixing a rubber material with a resin such as ethylene-vinyl acetate copolymer and / or polyethylene, adding and kneading a crosslinking agent, a foaming agent, a filler, and other additives, heating the mixture in a mold or the like to foam, and cutting the foam to give it a shape, or by heating and compressing the foam in a mold and cooling it to give it a shape. The above examples are not limited to the above examples.

[0019] Hereinafter, the present invention will be described in detail based on examples, but the technical concept of the present invention is not limited to the examples. EXAMPLES

[0020] 1 to 9 are drawings for explaining one embodiment of footwear having a guide part with an opening that is always wide and open according to the present invention. FIG. 1 is an external view (left side view) of a right foot of footwear 1 having a guide part, as seen from the left, FIG. 2 is an external view (plan view) as seen from above, and FIG. 3 is a perspective view as seen from above on the left rear side. The footwear 1 shown in these FIGS. 1 to 3 has a deep upper part 2 composed of a wide opening 25, a toe part 21, a foot side part 22, and a heel part 23 having a guide part 232, and a sole part 4, and shows an embodiment of a slip-on type in which the toe box of the upper part 2 formed by the fabric of the center stitching 24 is high and the part (toe part 21) where the toes are placed is roomy. The slip-on type is characterized by a tongue part 26 that extends diagonally upward from the periphery of the opening toward the rear end within the opening 25, and the tongue part 26 has the function of easily receiving a foot that slides diagonally downward forward within the opening 25.

[0021] Next, heel section 23 of footwear 1 according to this embodiment will be described. As shown in Fig. 1 or 3, heel section 23 has heel curve section 230, step section 231, and guide section 232. Heel curve section 230 is a section that supports the rear of the foot (rear of the heel), and is curved in the width direction.

[0022] As shown in FIG. 1 or FIG. 3, the step portion 231 is formed on the outer surface of the heel curve portion 230 so as to protrude outward. The step portion 231 is formed above the lower end of the heel curve portion 230 (for example, near the center position of the heel curve portion 230 in the vertical direction). Since the step portion 231 protrudes outward from the surroundings, when putting on the footwear 1, the user can hook the fingers or hands on the step portion 231 and pull the step portion 231 upward, thereby assisting the user in putting on the footwear 1. When taking off the footwear 1, the step portion 231 can also assist the user in taking off the footwear 1 by hooking the fingers or hands on the step portion 231 and pulling the step portion 231 downward. As shown in FIG. 4, a caregiver can also hook the fingers or hands on the step portion 231 to assist the user in putting on or taking off the shoes. 4 shows a scene in which a caregiver pulls footwear 1 in the direction of the sole of the foot while placing the middle finger and index finger along step portion 231 and pinching step portion 231 between the middle finger and index finger, thereby removing footwear 1 from a user. Note that in this embodiment, step portion 231 is formed to extend in the width direction so as to wrap around heel curve portion 230 in the width direction, but the shape is not limited as long as a user or caregiver can place their fingers or hands on step portion 231, and it may be, for example, a shape that protrudes in a mountain shape (a shape that protrudes at one point).

[0023] Guide portion 232 is located at the top end of heel portion 23, which is located at the rear end of opening 25, and has a shape that exposes an opening that widens toward the rear of the main body in the longitudinal direction and allows the foot to slide diagonally downward forward. With this shape, heel portion 23 with guide portion 232 has the function of widening the opening portion for putting the foot in and out at the top end of upper portion 2 and allowing the foot to slide diagonally downward forward. With guide portion 232, it serves as a part of the wide opening (opening 25) and allows the foot to slide diagonally downward forward, making it an easy-to-put-on heel.

[0024] In this embodiment, the heel part 23 has a hard moon-shaped core 233 between the exterior material (a cloth material in which urethane foam is attached to the outer cloth) and the interior material (a lining cloth, and a cloth material in which urethane foam is attached to the lining cloth as necessary), and the shape of the heel part 23 (particularly the guide part 232 and the step part 231) corresponds to the shape of the moon-shaped core 233 (the guide core part 2332 and the protruding part 2331 described later). Here, FIG. 5 is a perspective view of the hard core material (moon-shaped core) attached to the footwear (right foot) in FIG. 1 as seen from the left rear, FIG. 6 is an external view (left side view) as seen from the left, FIG. 7 is an external view (rear view) as seen from the rear, and FIG. 8 is an external view (oblique view) as seen from the rear and above. The moon-shaped core 233 has a protruding part 2331 corresponding to the protruding step part 231, and has a guide core part 2332 for maintaining the shape of the guide part 232.

[0025] The protrusion 2331 is formed on the outer surface of the moon-shaped core 233 and protrudes outward. By protruding outward, the protrusion 2331 forms the step 231 of the heel part 23. The amount of protrusion of the protrusion 2331 is not particularly limited, but the protrusion protrudes to an extent that the user can hook the finger on the step 231 even through the exterior material. The protrusion 2331 is formed above the lower end of the moon-shaped core 233 and below the upper end of the moon-shaped core 233. This allows the step 231 corresponding to the protrusion 2331 to be formed at a position where it is easy to push the step 231 upward from the bottom side with a finger or to push it downward from the top side with a finger. It is preferable that the protrusion 2331 has a shape according to the length of the finger or the distance between the fingers so that the caregiver can easily take off the footwear 1 by placing the finger along the step 231 corresponding to the protrusion 2331 and pinching the step 231 between the middle finger and the index finger as shown in FIG. 4. For example, in this embodiment, the length of the protruding portion 2331 in the longitudinal direction (length in the width direction of the footwear 1) can be 3 to 7 cm, and the length of the short side (length in the height direction of the footwear 1) can be 0.5 to 1.5 cm. Furthermore, the protruding portion 2331 can be formed integrally with other portions of the moon-shaped core 233, such as the guide core portion 2332.

[0026] Guide core portion 2332 is a portion that forms guide portion 232 by being fitted between the interior material and the exterior material, and has a shape corresponding to guide portion 232. Specifically, guide core portion 2332 is formed at the upper end of moon-shaped core 233 and has a shape that expands toward the rear of the main body, as shown in Fig. 8. Since guide core portion 2332 has a shape that expands toward the rear of the main body, the corresponding guide portion 232 also has a shape that expands toward the rear of the main body, so that the user can easily insert his / her foot from opening 25 into the toe box by placing his / her heel on guide portion 232 and lowering his / her heel downward.

[0027] As shown in Fig. 9, the guide core 2332 has peaks 2334 and valleys 2335 formed on its outer surface. Fig. 9 is a cross-sectional view taken along line IX-IX in Fig. 7. Specifically, in the guide core 2332, peaks 2334 having a relatively large thickness and valleys 2335 having a relatively small thickness are alternately formed in the width direction. This allows the thick peaks 2334 to increase the strength of the guide core 2332 against a downward force when the user puts on the footwear 1, while the thin valleys 2335 can increase the flexibility of the guide core 2332.

[0028] Furthermore, the guide core 2332 is configured to have two inclined portions (a first inclined portion 2336 and a second inclined portion 2337) when viewed from the side. The first inclined portion 2336 is formed from the upper end of the foot side portion 22 (the lower end of the guide core 2332) to the upper portion of the guide core 2332, and the second inclined portion 2337 is formed from the upper portion of the guide core 2332 to the upper end of the guide core 2332. The second inclined portion 2337 is a portion corresponding to the guide portion 232 of the heel portion 23, and is formed to have an angle of 45° or less with respect to the horizontal. By forming the second inclined portion 2337 to have an angle of 45° or less with respect to the horizontal, the guide portion 232 can guide the user's foot (toes) mainly in the forward direction. In particular, in this embodiment, by opening the opening 25 widely, the user can insert the user's foot into the toe box without stretching or shortening the ankle.

[0029] Furthermore, a notch 2333 is formed at the upper end of the guide core portion 2332. Forming the notch 2333 can increase flexibility against downward force when a user places his / her foot on the guide core portion 2332. Note that, in the example shown in Fig. 5 or 7, the notch 2333 has a fan-like shape, but is not limited to this configuration and can also be, for example, semicircular.

[0030] In this embodiment, the upper part 2 is made of a fabric material in which a sponge (urethane foam) cloth is attached to a surface fabric (knit) of the fabric, and the lining is layered and sewn together. Such fabric materials are commonly used fabric materials. The upper part 2 is formed by sewing a pair of fabrics of the same shape, in which two pieces of fabric are sewn at the side of the foot, at the center of the longitudinal direction of the upper part (center stitching 24). Of the pair of fabrics of the same shape sewn at the side of the foot, the fabric of the heel part 23 is thicker in the sponge (urethane foam) cloth than the fabric of the toe box including the toe, so that it can be made into a cushioned heel and can be fully fitted to the shape of the heel / foot of the wearer. The lining is made of a durable knit fabric with a slippery property so that the foot can be easily put on. When formed with center stitching 24 using a stretchy fabric material, the tongue part 26 also has the center stitching 24 and extends diagonally upward from the vicinity of the opening toward the rear end inside the opening 25, so that the opening 25 can be further enlarged while maintaining a fit or a feeling of hold.

[0031] In this way, the opening (opening 25) of the cloth footwear 1 is formed at the upper end of the instep 2 with a wide opening (opening 25) for putting the foot in and out, and a part of the wide opening (opening 25) is supported by the guide section 232 of the heel section 23. The heel section 23 is a gentle cushioned heel that provides shock absorption and cushioning, and has a guide section 232 shaped to slide the foot diagonally downward and forward while maintaining a good fit or hold, exposing the opening 25 in the longitudinal direction.

[0032] To further enlarge the wide opening (opening 25), a tongue 26 of the fabric material extends obliquely upward from the periphery of the opening toward the rear end within the opening 25. The tongue 26 of the fabric material exposes a larger portion of the opening in the longitudinal direction of the insole. To accommodate swelling, edema, and deformation of the foot, it is desirable to have an opening (opening) large enough to expose, for example, about 1 / 2 of the longitudinal direction of the insole.

[0033] The sole 4 is composed of an outsole 41 and a midsole 42. The outsole 41 is made of a foamed or non-foamed material having elasticity, such as synthetic resin with a low specific gravity and a relatively high flexural modulus, or rubber material. The midsole 42 and the outsole 41 can also be made of different materials. In the case of different materials, the insole can be made of a material that is excellent at absorbing impact from the floor, such as low-resilience foam, and the outsole can be made of a material that is flexible but has excellent friction resistance. Ethylene-vinyl acetate copolymer and polyethylene foam are exemplified as preferable materials, but the friction resistance can be improved by mixing a rubber material. The molding of the sole member using such foam is performed by mixing a rubber material with a resin such as ethylene-vinyl acetate copolymer and / or polyethylene, adding and kneading a crosslinking agent, a foaming agent, a filler, and other additives, heating the mixture in a mold or the like to foam, and cutting the mixture to form a shape, or by heating and compressing the foam in a mold and cooling the foam to form a shape.

[0034] In this embodiment, a protrusion provided by cutting on the side of the other foot of the surface of the outsole 41 that joins with the upper 2 is hollowed out to provide an outsole step 411 that allows the other foot to be hooked onto and helps take off the shoe when taking it off. Also, an anti-slip groove 412 is formed in the outsole step 411. In this embodiment, multiple grooves 412 are formed radially from the inside to the outside on the upper surface of the outsole step 411.

[0035] Although not shown in detail, the midsole 42 has a surface shape that is adapted to the structure of the sole of a human foot. The side that comes into contact with the foot is provided with convex curved ridges that support the medial longitudinal arch, lateral longitudinal arch, and transverse arch of the foot skeleton. These ridges are for reducing fatigue of the wearer. The outer periphery of the side that comes into contact with the foot may also be provided with an outer periphery ridge to enhance the stability of the foot. This is a gradual rise of the ridge formed on the side edge along the circumferential side edge. The formation of this outer periphery ridge improves the hold of the foot. In this way, the position of the foot can be stabilized by preventing the foot from moving or slipping off the midsole (insole) surface, improving the comfort of the shoe.

[0036] When a foam of ethylene-vinyl acetate copolymer (EVA) mixed with rubber is used as the material for the midsole 42, it has excellent lightness and cushioning properties, and thus reduces foot fatigue, but is not limited to this. Cloth can be attached to the side of the midsole that comes into contact with the foot (the surface of the midsole). In this case, by covering the surface of the midsole with cloth or the like, it comes into contact with the sole of the wearer's foot, and the cushioning effect of the soft cloth and the midsole can improve comfort.

[0037] Although the preferred embodiment of the present invention has been described above, the technical scope of the present invention is not limited to the description of the above embodiment. Various modifications and improvements can be made to the above embodiment, and such modifications and improvements are also included in the technical scope of the present invention.

[0038] For example, in the above-mentioned embodiment, the protrusion 2331 of the moon-shaped core 233 is formed in a band-like shape extending in the width direction as shown in Fig. 5, but as long as the user or caregiver can hook the finger on the step 231 corresponding to the protrusion 2331, it is not limited to this configuration and can be formed in various shapes, such as a square, a circle, an ellipse, a polygon, a vertically long shape, etc. Also, the protrusion 2331 is not limited to one, and can be formed in a configuration in which multiple protrusions 2331 are formed. For example, as shown in Fig. 5, when the protrusion 2331 is formed in a band-like shape extending in the width direction, multiple protrusions 2331 can be arranged in parallel in the vertical direction, and when the protrusion 2331 is short in the width direction, such as a circle, multiple protrusions 2331 can be arranged in parallel in the width direction. [Explanation of symbols]

[0039] 1: Footwear 2: Instep 21: Toe 22: Side of foot 23: Heel 230: Heel curve 231:Dan section 232: Guide section 233: Moon core 2331: Protrusion 2332:ガイドcore 2333: Cut the missing part 2334: Yamabe 2335:Tanibe 2336:1st inclined portion 2337: Second inclined portion 2338: Side 24: Center sewing 25: Opening 26: Tongue 4: Bottom 41: Background 411: Background section 412: Groove 42: Midsole

Claims

1. Footwear comprising an upper having an opening and a sole, The upper portion has a toe portion, a side portion, and a heel portion, The heel portion is A heel curve portion that supports the rear of the heel and curves in the width direction; a step portion formed on an outer surface of the heel curve portion so as to protrude outward; a guide portion formed at an upper end of the heel portion located at a rear end of the opening and expanding rearward; Footwear characterized in that a hard core material is fitted inside, the hard core material having a protrusion corresponding to the step of the heel portion and a guide core portion for maintaining the shape of the guide portion.

2. 2. The footwear according to claim 1, wherein the step is formed above a lower end of the heel curve portion, and a toe can be hooked thereon and pushed upward from below with the toe.

3. 2. The footwear according to claim 1, wherein the guide core has, in a horizontal cross section, peaks that are relatively thick and valleys that are relatively thin, and the peaks and valleys are alternately formed in the width direction.

4. 2. The footwear according to claim 1, characterized in that the upper part has a slip-on type structure with a high toe box and ample room for the toes, the structure being composed of a toe part, a tongue part extending diagonally upward into the opening from the vicinity of the opening to the rear end, a foot side part, and a heel part.

5. 2. The footwear according to claim 1, wherein the upper portion is formed by sewing together a pair of identically shaped pieces of fabric, each of which is made by sewing together two pieces of fabric at the sides of the foot, at a central portion in the longitudinal direction of the upper portion.

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