Moon-shaped core and footwear

Abstract

To provide footwear with a crescent-shaped insole and footwear having a crescent-shaped insole that provides a good fit and comfort when worn. [Solution] A crescent-shaped core curved to conform to the shape of the heel of footwear, having a rear end that conforms to the shape of the rear end of the heel, and side portions provided on both sides of the rear end that conform to the shape of the sides of the heel, with a grid-like pattern of multiple holes formed on the rear end and side portions to allow the whole to be flexibly deformable, and a column portion provided in the center of the rear end to prevent the whole from bending.

Description

Technical Field

[0001] The present invention relates to a moon core and footwear having a moon core.

Background Art

[0002] In recent years, so-called hands-free footwear that allows the foot to be easily slipped in without performing actions such as using a shoehorn or bending down to put on the shoes has attracted attention.

[0003] As a conventional technique, it has been proposed to provide a guide portion that slopes upward away from the rear edge at the heel portion including the rear edge of the opening edge of the shoe opening, thereby making it easier to put on the shoes without increasing the opening area of the shoe opening. To form this guide portion, the heel counter has a double structure of a hard first heel counter normally used for the heel of the shoe and a second heel counter that is softer and has a slit and forms a guide core portion (see Patent Document 1).

[0004] Also, as a conventional technique, in a shoe including a shoe sole and a shoe body provided above the shoe sole and composed of a double layer of an outer skin and an inner skin, a horseshoe-shaped metal plate heel guide formed to cover the heel is installed between the outer skin and the inner skin, and a warping portion for sliding the heel is integrally formed at the upper end of the shoe guide (see Patent Document 2).

[0005] Also, as a conventional technique, in a short shoe having a heel portion at the rear end, a hard protruding piece portion extending obliquely upward and rearward is formed at the upper end of the heel portion. The protruding piece portion is provided with a moon core extension portion extending from the moon core provided in the heel portion as a core to obtain hardness. The tip height of the protruding piece portion is higher than the front end height of the shoe opening. The protruding piece portion has a curved shape with the inner surface side concave in the cross-sectional shape, and the contour shape of the tip of the protruding piece portion is rounded to increase strength and soften the contact with the heel (see Patent Document 3).

[0006] Furthermore, in conventional technology, a heel counter is known to consist of a head arch, a neck arch, an abdominal arch, and a foot portion. The top of the head arch extends in an arc shape, sloping upward and diagonally backward, and the central part of the head arch is formed in a concave shape to form an arched tray portion. The neck arch is roughly V-shaped, narrower at the back and wider at the front, with the width of the V-shaped horizontal opening being narrower than the width of the heel of the foot. The abdominal arch is formed in a hemispherical shell structure. When downward pressure is applied to the tray portion of the head arch, the tray portion deforms to bend backward in response to the pressure, and the neck arch deforms so that the width of the V-shaped horizontal opening widens. When the pressure is released, it immediately returns to its original shape (see Patent Document 4). [Prior art documents] [Patent Documents]

[0007] [Patent Document 1] Utility Model Registration No. 3212460 Publication [Patent Document 2] Utility Model Registration No. 3235968 Gazette [Patent Document 3] Japanese Patent Publication No. 2022-139151 [Patent Document 1] Utility Model Registration No. 3246100 Publication [Overview of the project] [Problems that the invention aims to solve]

[0008] However, the conventional technologies described above prioritized ease of putting on and taking off shoes, but did not adequately address the fit and comfort of the shoes when worn.

[0009] The object of the present invention is to provide a crescent-shaped insole for footwear that provides a good fit and comfort when worn, and footwear having a crescent-shaped insole. [Means for solving the problem]

[0010] The crescent-shaped core according to the present invention is a crescent-shaped core that is curved to conform to the shape of the heel portion of footwear, and has a rear end portion that conforms to the shape of the rear end of the heel portion, and side portions provided on both sides of the rear end portion that conform to the shape of the side of the heel portion, and is characterized in that a grid-like pattern of multiple holes is formed on the rear end portion and the side portions so that the whole can be flexibly deformed.

[0011] In the crescent-shaped core described above, a column portion may be provided in the center of the rear end to prevent the entire structure from bending.

[0012] In the crescent-shaped core described above, the grid-like pattern at the rear end may be arranged to radiate outwards from the center of the column.

[0013] In the crescent-shaped core described above, a foot portion may be formed at the lower end of the side portion for fixing to the lower side portion of the heel portion, and a relief may be formed at the lower end of the rear portion so as not to be fixed to the lower rear portion of the heel portion.

[0014] The footwear according to the present invention is characterized in that it comprises a sole that constitutes the bottom, an upper for covering the instep of the foot, sides for covering both the left and right sides of the foot, and a heel portion for supporting the heel of the foot, wherein the heel portion is fitted with a crescent-shaped core as described in any one of claims 1 to 4.

[0015] In the footwear described above, the rear edge of the upper, the upper edge of the side, and the heel portion 18 form an opening for inserting the foot, and the rear edge of the upper may be formed of a deformable flexible material. [Effects of the Invention]

[0016] As described above, the moon-shaped core according to the present invention is a moon-shaped core having a curved shape that conforms to the shape of the heel portion of the footwear, and has a rear end portion that conforms to the shape of the rear end of the heel portion, and side portions provided on both sides of the rear end portion that conform to the shape of the side surface of the heel portion. A lattice pattern formed by a plurality of holes for making the entire rear end portion and side portions flexibly deformable is formed, so that a feeling of fit and comfort on the foot when worn can be realized.

Brief Description of the Drawings

[0017] [Figure 1] FIG. 1 is a view showing a shoe according to an embodiment of the present invention. [Figure 2] FIG. 2 is a view showing a shoe according to an embodiment of the present invention. [Figure 3] FIG. 3 is a view showing a moon-shaped core to be mounted on a shoe according to an embodiment of the present invention. [Figure 4] FIG. 4 is a view showing a state when a shoe according to an embodiment of the present invention is in use.

Modes for Carrying Out the Invention

[0018] [One Embodiment] A shoe according to an embodiment of the present invention will be described with reference to FIGS. 1 to 4. FIG. 1 is a perspective view of the entire shoe according to the present embodiment as viewed obliquely from above. FIG. 2 is a view showing a state in which a moon-shaped core is mounted on the shoe according to the present embodiment. FIG. 3 is a view showing the moon-shaped core mounted on the shoe according to the present embodiment. FIG. 4 is a view showing a state when the shoe according to the present embodiment is in use.

[0019] As shown in FIG. 1, a shoe 10 as footwear according to the present embodiment has a sole 12 constituting the shoe sole, an upper 14 located on the toe side and covering the instep, a side 16 covering both the left and right sides of the foot, and a heel portion 18 covering the heel of the foot.

[0020] An opening 20 for inserting the foot is formed by the trailing edge of the upper 14, the upper edge of the side 16, and the heel portion 18. The toe side of the foot is accommodated in a portion anterior to the opening 20, and the heel of the foot is supported by the heel portion 18 of the portion posterior to the opening 20.

[0021] The sole 12 has an outsole 12a on the ground side and a midsole 12b on the upper layer of the outsole 12a.

[0022] In the present embodiment, the entire sole 12 including the outsole 12a and the midsole 12b is formed of EVA resin of the same material.

[0023] Note that the outsole 12a and the midsole 12b may be formed of different materials with different hardnesses. For example, the outsole 12a may be formed of a relatively hard rubber material, genuine leather, etc., and the midsole 12b may be formed of a relatively soft rubber material, etc.

[0024] The upper 14 covers the entire front of the instep from the toe of the human foot to the front of the ankle. The upper 14 is formed of cloth, genuine leather, synthetic leather, artificial leather, enamel, etc. The upper 14 is provided with a shoelace portion 14a for tying a shoelace. The trailing edge 14b of the upper 14 is formed of a stretchable deformable flexible member such as knit, for example, and constitutes the front side of the opening 20.

[0025] The side 16 covers the lateral side behind the instep of the human foot. The side 16 is formed of cloth, genuine leather, synthetic leather, artificial leather, enamel, etc. The front of the side 16 partially overlaps with the rear of the upper 14.

[0026] The heel portion 18 is formed of the same color and material as the side 16, and the edges are overlapped and joined by sewing. The heel portion 18 has a shape along the heel of the human foot.

[0027] In this embodiment, as shown in Figure 2, a crescent-shaped stiffener 30 is installed inside the heel portion 18 of the shoe 10. The crescent-shaped stiffener 30 is also called a heel counter. Figure 2(a) is a side view of the shoe 10, and Figure 2(b) is a rear view of the shoe 10. As shown in Figure 2, the crescent-shaped stiffener 30 is installed inside the heel portion 18 of the shoe 10 and cannot be directly seen from the outside.

[0028] Details of the crescent-shaped lead 30 according to this embodiment will be explained with reference to Figure 3. Figure 3(a) is a perspective view of the crescent-shaped lead 30 seen from diagonally above, and Figure 3(b) is a rear view of the crescent-shaped lead 30 seen from the back.

[0029] As shown in Figure 3(a), the crescent-shaped core 30 has a curved shape overall that conforms to the shape of the heel portion 18 of the shoe 10.

[0030] The crescent-shaped core 30 is formed from a material having elastic recovery properties. Examples of materials with elastic recovery properties include TPU (Thermoplastic Polyurethane), TPE (Thermoplastic Elastomer), silicone, elastomer, and neoprene. TPU and TPE are preferable in terms of abrasion resistance, oil resistance, chemical resistance, elastic recovery, and bending resistance.

[0031] The three primary functions of the crescent-shaped core 30 are as follows: First, to maintain the shape of the heel portion 18. Without the crescent-shaped core 30, the heel portion 18 would easily deform under the pressure of the foot. Second, to protect the joints of the foot. It fixes the position of the heel when wearing the shoe 10, ensuring stability. Furthermore, it plays a role in mitigating external impacts. With the crescent-shaped core 30, external impacts can be absorbed, effectively protecting the foot.

[0032] This embodiment provides a new function for the shoe 10 without impairing the original function of the crescent-shaped core 30 described above.

[0033] As shown in Figure 3(a), the crescent-shaped core 30 according to this embodiment has a rear end portion 32 that conforms to the shape of the rear end of the heel portion 18, and side portions 34 and 36 provided on both sides of the rear end portion 32 that conform to the shape of the side surface of the heel portion 18.

[0034] As shown in Figures 3(a) and 3(b), the rear end 32 and side portions 34 and 36 of the crescent-shaped core 30 are each provided with multiple holes 32a, 34a, and 36a, respectively, in order to allow the entire crescent-shaped core 30 to be flexibly deformed. These multiple holes 32a, 34a, and 36a form a grid-like pattern on the rear end 32 and side portions 34 and 36 of the crescent-shaped core 30.

[0035] As shown in Figure 3(b), a columnar portion 32b is formed in the center of the rear end portion 32 to prevent bending of the entire crescent-shaped core 30. Since no holes are formed in the area of ​​the columnar portion 32b, the crescent-shaped core 30 will not bend even if vertical force is applied to it, and the shape of the crescent-shaped core 30 can be maintained.

[0036] As shown in Figure 3(b), the grid-like pattern of the rear end portion 32 radiates outward from the center 32c of the column portion 32b.

[0037] In the crescent-shaped core 30, as shown in Figure 3(b), the lower ends of the side portions 34 and 36 are provided with foot portions 34b and 36b, respectively, for insertion into and fixing to the lower side portion of the heel portion 18. On the other hand, the lower end of the rear portion 32 has a relief 32d formed so as not to be inserted into and fixed to the lower rear portion of the heel portion 18.

[0038] Thus, according to this embodiment, multiple holes 32a, 34a, and 36a are made in the rear end portion 32 and the side portions 34 and 36 of the crescent-shaped core 30, forming a grid-like pattern, so that the entire crescent-shaped core 30 can be flexibly deformed.

[0039] Furthermore, since a columnar portion 32b is formed in the center of the rear end portion 32 of the crescent-shaped core 30, even if the crescent-shaped core 30 deforms, it can be easily restored to its original shape without bending.

[0040] These features allow you to put on and take off your shoes smoothly.

[0041] Specifically, as shown in Figure 4, when inserting the foot 40 into the opening 20 of the shoe 10, the crescent-shaped stiffener 30 of this embodiment is attached to the heel portion 18 of the shoe 10. As a result, the inclination of the heel portion 18 of the shoe 10 changes from A to B, the opening 20 becomes substantially wider, and the rear edge portion 14b of the upper 14 does not get caught inside. Once the foot 40 has been inserted into the opening 20, the inclination of the heel portion 18 of the shoe 10 immediately returns to its original position from B to A.

[0042] Furthermore, since multiple holes 32a, 34a, and 36a are provided in the rear end 32 and side portions 34 and 36 of the crescent-shaped core 30, sufficient ventilation is ensured, preventing stuffiness even when wearing shoes for extended periods.

[0043] Furthermore, since multiple holes 32a, 34a, and 36a are made in the rear end 32 and side portions 34 and 36 of the crescent-shaped core 30, the crescent-shaped core 30 is made lighter, and consequently the shoe 10 itself can be made lighter.

[0044] Furthermore, the lower ends of the side portions 34 and 36 of the crescent-shaped core 30 are provided with foot portions 34b and 36b for inserting into and fixing to the lower side portion of the heel portion 18, and a relief 32d is formed at the lower end of the rear portion 32 so as not to be inserted into and fixed to the lower rear portion of the heel portion 18. Therefore, the same crescent-shaped core 30 can be attached to the heel portion 18 of various types of shoes 10.

[0045] [Modified Embodiment] The present invention is not limited to the embodiments described above and can be modified in various ways. Furthermore, the notations, expressions, and forms described in the above embodiments are merely examples and are not limited thereto. [Explanation of Symbols]

[0046] 10…Shoes 12…Sole 12a... Outsole 12b...Midsole 14... Appa 14a... Shoelaces 14b... Trailing edge 16... Side 18... Heel 20...Opening 30…Moon-shaped core 32...Rear end 32a…hole 32b...Column part 32c…center 32d... escape 34…Side part 34a…hole 34b...foot 36...Side part 36a…hole 36b…foot 40... feet

Claims

1. A crescent-shaped core that is curved to conform to the shape of the heel of footwear, A rear end portion that conforms to the shape of the rear end of the heel portion, It has side portions provided on both sides of the aforementioned rear end, which conform to the shape of the side surface of the heel portion, The rear end and the side surface are formed with a grid-like pattern of multiple holes to allow the entire structure to be flexibly deformable. A moon-shaped lead characterized by its features.

2. In the crescent-shaped lead according to claim 1, A column is provided in the center of the aforementioned rear end to prevent the entire structure from bending. A moon-shaped lead characterized by its features.

3. In the crescent-shaped lead according to claim 2, The aforementioned grid-like pattern at the rear end extends radially from the center of the column portion. A moon-shaped lead characterized by its features.

4. In the crescent-shaped lead according to claim 2, A foot portion is formed at the lower end of the side portion for fixing to the lower side portion of the heel portion. A relief is formed at the lower end of the rear end so as not to be fixed to the lower rear end of the heel portion. A moon-shaped lead characterized by its features.

5. Footwear comprising a sole that forms the bottom, an upper that covers the instep of the foot, sides that cover both sides of the foot, and a heel portion that supports the heel of the foot, The heel portion is fitted with the crescent-shaped core according to any one of claims 1 to 4. Footwear characterized by the following features.

6. In the footwear according to claim 5, The rear edge of the upper, the upper edge of the side, and the heel form an opening for inserting the foot, and the rear edge of the upper is formed of a deformable flexible material. Footwear characterized by the following features.

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