Novel moon-shaped core for shoe and shoe using the same

Abstract

To provide a novel moon-shaped core for shoes and shoe using the same, being easy to put on when worn and unlikely to slip off while a wearer is walking or when starting to walk by holding the wearer's foot well when worn.SOLUTION: A novel moon-shaped core for shoes is used with it attached to a heel of a shoe. The moon-shaped core is comprised of a prescribed heel-part rear contact portion and a pair of side faces, where the pair of side faces extend to side faces of a metatarsal region of a wearer.SELECTED DRAWING: Figure 4

Description

Technical Field

[0001] The present invention relates to a novel moon-shaped core for ankle boots and ankle boots using the same. More specifically, the present invention relates to a novel moon-shaped core for ankle boots that can achieve both ease of wearing and difficulty in slipping off by sufficiently holding the wearer's foot when worn, and ankle boots using the same.

Background Art

[0002] Conventionally, ankle boots such as sneakers and leather shoes are provided with a moon-shaped core (reinforcing core, Counter, Stiffener) having a moon shape at the heel portion. This moon-shaped core imparts mechanical strength to the heel portion of the ankle boot, and contributes to improving the stability of the wearer's heel bone by contacting the wearer's heel portion so as to surround it when the wearer is wearing the boot.

[0003] In recent years, in a conventional moon-shaped core, a hard projecting piece is provided at the upper end of the heel portion obliquely rearward upward, so that when the wearer wears the ankle boot, the foot can be easily guided smoothly inside the ankle boot, and attempts have been made to improve the ease of wearing for the wearer.

[0004] For example, Patent Document 1 discloses "footwear and a moon-shaped core for ankle boots that can be worn without crushing the heel portion" (paragraph 0003 of the specification, etc.).

[0005] Specifically, this moon-shaped core is "a moon-shaped core for ankle boots to be mounted inside the heel portion of the ankle boot, having a moon-shaped core body, a moon-shaped core valley portion provided at the center of the upper end portion of the moon-shaped core body, a first moon-shaped core peak portion formed on one side of the moon-shaped core valley portion, and a second moon-shaped core peak portion formed on the other side of the moon-shaped core valley portion, wherein the tip of the first moon-shaped core peak portion is inclined outward of the moon-shaped core body, the tip of the second moon-shaped core peak portion is inclined outward of the moon-shaped core body, and when the moon-shaped core body is mounted on the ankle boot, the first moon-shaped core peak portion, the moon-shaped core valley portion, and the second moon-shaped core peak portion protrude above the topline of the heel portion of the ankle boot" (Claim 1, Summary, etc.).

Prior Art Documents

Patent Document

[0006]

Patent Document 1

[0007]

Summary of the Invention

Problems to be Solved by the Invention

[0008] The inventors of the present invention have intensively studied the conventional structure of the insole and the functions resulting from the structure. As a result, although the conventional insole shows an improvement in ease of wearing, there is a problem that the worn shoes (ankle boots) are likely to come off during the wearer's walking or at the start of walking. That is, in the conventional insole with improved ease of wearing, it is difficult to achieve both ease of wearing and difficulty in coming off, and it can be said that there is still room for improvement in this regard. In addition, the inventors of the present invention have found that by extending the side surface portion of the insole (also referred to as the "wing portion") not only to the side surface portion of the heel but also to the side surface of the instep, it is possible to abut from the rearmost and side surfaces of the side surface portion of the wearer's heel to the side surface of the instep when worn. And with such a configuration, it has been found that the side surfaces of the wearer's feet can be sufficiently clamped (held) from both sides, and as a result, the problem that the worn shoes (ankle boots) are likely to come off during the wearer's walking or at the start of walking can be solved.

[0009] That is, an object of the present invention is to provide a novel insole for ankle boots that can exhibit the effect of being difficult to come off during the wearer's walking or at the start of walking by sufficiently holding the wearer's feet when worn, together with good ease of wearing when worn, and an ankle boot using the same.

Means for Solving the Problems

[0010] The insole for ankle boots according to the present invention is an insole for ankle boots that is worn and used at the heel of the ankle boot, and It is composed of a rear heel contact portion that contacts the back side of the wearer's heel, and a pair of side portions extending from both ends of the rear heel contact portion. The pair of side portions consists of an inner side portion and an outer side portion. The inner side portion and the outer side portion face each other. The pair of side portions is characterized by extending to the side of the wearer's midfoot.

[0011] The distance becomes smaller as it progresses from the rear heel contact portion side toward the end portions of the inner side portion and the outer side portion, and it is preferably configured to be able to sandwich the side of the foot of the ankle boot wearer.

[0012] Also, in the ankle boot last core of the present invention, it is preferable that a convex portion for preventing the boot from coming off is formed on the inner surface side.

[0013] Furthermore, in the ankle boot last core of the present invention, it is more preferable that the convex portion for preventing the boot from coming off is formed on the inner surface side of the inner side portion and the inner surface side of the outer side portion.

[0014] The ankle boot according to the present invention is characterized in that the above-described ankle boot last core is attached to the heel portion of the ankle boot.

Brief Description of the Drawings

[0015]

Figure 1

Figure 2

Figure 3

Figure 4

Figure 5

Figure 6

Figure 7

Figure 8

Embodiments for Carrying Out the Invention

[0016] Hereinafter, the crescent core for ankle boots (simply also referred to as "crescent core") and the ankle boots according to the present invention will be described in detail with appropriate reference to the drawings.

[0017] As shown in Fig. 1(A), in this specification, "front" and "rear" respectively refer to the direction of the toe portion 2 side of the ankle boot and the direction of the heel portion 3 side, and "upper" and "lower" respectively refer to the direction of the upper 5 or the topline 6 side of the ankle boot and the direction of the sole 4 side (that is, the direction opposite to the ground side and the direction of the ground side during use respectively). As shown in Figs. 1(B) and (C), "inner" and "outer" respectively refer to the direction of the thumb side and the little finger side among the toes of the wearer's foot.

[0018] FIG. 2 is a diagram (front view, rear view, top view) for showing one aspect of the moon core according to the present invention, and the moon core 10 used for the left-foot short boot is illustrated. As shown in FIG. 2, the short-boot moon core 10 according to the present invention includes a rear heel contact portion 11 that contacts the rear side of the wearer's heel, and a pair of side portions 12 (wing portions, composed of an inner side portion 12a and an outer side portion 12b) extending from both end portions of the rear heel contact portion 11. Here, as shown in FIG. 2(C), the inner side portion 12a and the outer side portion 12b are positioned to face each other, and extend in the front direction of the short boot while contacting the side portion of the short boot. Here, "facing each other" means a state in which the inner side portion 12a and the outer side portion 12b face each other on their respective inner sides. For example, in a top view, when the inner side portion 12a and the outer side portion 12b are substantially parallel or the separation distance between the inner side portion 12a and the outer side portion 12b decreases as they proceed forward.

[0019] Further, the short-boot moon core 10 according to the present invention is mounted on and used for the heel portion 3 of the short boot. Specifically, as shown in FIG. 4, in the moon core of the present invention, the rear heel contact portion 11 of the moon core contacts the innermost surface at the rearmost part of the heel portion of the short boot, and generally exists (is built in) inside the heel portion of the short boot.

[0020] Also, as illustrated in FIGS. 3(A) to (B) and FIG. 4, the front end portions F of the inner side portion 12a and the outer side portion 12b are characterized by extending to the side of the wearer's midfoot (the side of the instep portion). That is, as shown in FIG. 4, when the sole of the short boot is in contact with the ground G, it means that the front end portions F of the inner side portion 12a and the outer side portion 12b reach the midfoot M, which is the portion not in contact with the ground G.

[0021] By having such a configuration, as shown in FIGS. 5 and 6, the last for ankle boots contacts (abuts) the rear side and the side and middle side of the wearer's heel, and can hold well. Therefore, when worn, by sufficiently holding the wearer's foot (by improving the holding characteristics), the effect that it is difficult to come off during the wearer's walking or at the start of walking can be exhibited.

[0022] Note that the material of the last according to the present invention is not particularly limited, but in order to improve the above-mentioned holding characteristics as well as in the case of a general material of the last, synthetic resins such as polypropylene, polyethylene terephthalate, and polyamide resin can be mentioned. Further, from the viewpoint of improving the above-mentioned holding characteristics, the material may be a metal such as aluminum or stainless steel, or wood, or a composite material containing at least two kinds of materials selected from the group consisting of the above synthetic resin, metal, and wood. When the material is a synthetic resin, it can be molded by a general molding machine.

[0023] From the viewpoint of further improving the holdability and achieving good wearability and difficulty in coming off during the wearer's walking or at the start of walking, as shown in FIG. 7, in the last according to the present invention, the separation distance between the inner side surface portion 12a and the outer side surface portion 12b becomes smaller as it advances from the rear contact portion side of the heel toward the end portions of the inner side surface portion 12a and the outer side surface portion 12b, and it is preferably configured to be able to sandwich the side surface of the foot of the wearer of the ankle boots (specifically, the middle side of the foot).

[0024] The reference numerals D1 to D3 in FIG. 7 indicate the separation distance between the inner side surface portion 12a and the outer side surface portion 12b. The separation distances indicated by the reference numerals D1 to D3 have a relationship shown as "D1 < D2 < D3". That is, as it advances from the rear to the front, the separation distance between the inner side surface portion 12a and the outer side surface portion 12b gradually becomes smaller (that is, the side surface portions come closer to each other as they advance toward the end portions of both side surface portions).

[0025] Further, from the perspective of improving the difficulty of slipping off during walking or at the start of walking of the wearer by enhancing the holding property, the moon core according to the present invention preferably has at least one convex portion for preventing the shoe from slipping off on the inner surface side (i.e., the side where the wearer's foot contacts when worn). As shown in FIG. 8(A), it is more preferable that the convex portion 18 for preventing the shoe from slipping off is formed on the inner surface side of the side surface portion 12 (the inner surface side of the inner side surface portion 12a and the inner surface side of the outer side surface portion 12b).

[0026] FIGS. 8(B) and 8(C) are respectively a cross-sectional view taken along X1-X2 and a cross-sectional view taken along Y1-Y2 of FIG. 8(A). As shown in such figures, the convex portion 13 for preventing the shoe from slipping off has a convex shape provided toward the inside, and such convex portion 13 for preventing the shoe from slipping off can sandwich (hold) the wearer's foot with a locally high clamping force, and can extremely improve the difficulty of slipping off.

[0027] Note that the convex portion for preventing the shoe from slipping off is preferably formed of a flexible material such as an elastomer.

[0028] As shown in FIGS. 8(B) and 8(C), it is preferable to include a protruding portion 14 protruding above the topline. By configuring in this way, it becomes easy to put the toe of the wearer's foot on the topline of the ankle boots, and it is also possible to easily put the heel portion while being guided by the protruding portion 14.

[0029] Further, the ankle boots according to the present invention are characterized by incorporating the moon core of the present invention. Here, the type of the ankle boots is not particularly limited, and examples include sneakers, sports shoes, leather shoes, and the like. For example, when the ankle boots according to the present invention are sports shoes, there is an advantage in that it is possible to prevent the sports shoes from slipping off during exercise for athletes or jogging enthusiasts.

[0030] Also, it is preferable that the ankle boots according to the present invention are ankle boots used by medical workers or caregivers. In this case, for example, it is possible to prevent problems such as the work being interrupted once when medical workers or caregivers take them off during work.

Industrial Applicability

[0031] According to the present invention, it is possible to provide a novel insole for ankle boots and ankle boots using the same, which can achieve both ease of wearing when worn and difficulty in coming off during walking or at the start of walking of the wearer.

Explanation of Signs

[0032] 1: Ankle boots 1L: Left-foot ankle boots 1R: Right-foot ankle boots 2: Toe part 3: Heel part 4: Shoe sole 5: Upper 6: Top line 7: Tongue 8: Shoelace 10: Insole for ankle boots according to the present invention 11: Rear contact part 11 of the heel part 12: Side part (wing part) 12a: Inner side part 12b: Outer side part 13: Protrusion for preventing shoe from coming off 14: Protruding part M: Metatarsus part G: Ground Y: Foot of the wearer D1~D3: Separation distance

Claims

1. A last core for ankle boots, which is worn and used on the heel part of the ankle boots, composed of a rear heel contact part that contacts the back side of the wearer's heel, and a pair of side parts extending from both ends of the rear heel contact part, wherein the pair of side parts consists of an inner side part and an outer side part, the inner side part and the outer side part face each other, and the pair of side parts extend to the side of the wearer's midfoot, characterized by the last core for ankle boots.

2. The distance between the inner side part and the outer side part decreases as it progresses from the rear heel contact part side towards the end parts of the inner side part and the outer side part, and is configured to sandwich the side of the foot of the ankle boot wearer. The last core for ankle boots according to Claim 1, characterized by this.

3. The last core for ankle boots according to Claim 1, characterized in that a convex part for preventing the boot from slipping off is formed on the inner surface side.

4. The last core for ankle boots according to Claim 3, characterized in that the convex part for preventing the boot from slipping off is formed on the inner surface side of the inner side part and the inner surface side of the outer side part.

5. An ankle boot, wherein the last core for ankle boots according to any one of Claims 1 to 4 is mounted on the heel part of the ankle boot.

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