Ankle boots

Abstract

To provide a pair of short shoes which are easy to put on and take off and provide a comfortable fit by improving the holding feeling of the heel when the shoes are worn. [Solution] A short shoe 100 having a heel 10a with a moon-shaped core 30 built in. A cushioned heel pad 40 having a two-layer structure consisting of a hard layer 41 and a soft layer 42 is bent on top of the moon-shaped core 30 so that it fits the inner surface of the moon-shaped core 30 and the hard layer 41 is attached in close contact with the inner surface of the moon-shaped core 30. The moon-shaped core 30 with the heel pad 40 is built into the heel 10a, and an interior material 12 is placed over the surface of the heel pad 40 to form a heel cushion 14 from the upper left and right ends of the opening 13 to the rear.

Description

[Technical field]

[0001] The present invention relates to a shoe, and more particularly to a shoe having a heel with a built-in moon-shaped core. [Background technology]

[0002] In short shoes such as sneakers and business shoes, a crescent-shaped core is built into the heel to prevent the heel from being crushed when stepped on and to protect the shape of the heel to increase stability when walking. Some shoes have a sponge material built into the opening to soften the impact on the foot when putting on and taking off the shoe and to improve the holding feeling when wearing the shoe (for example, see Patent Documents 1 and 2). [Prior art documents] [Patent documents]

[0003] [Patent Document 1] JP 2024-110129 A [Patent Document 2] Patent No. 7479653 Summary of the Invention [Problem to be solved by the invention]

[0004] In low shoes with built-in crescent-shaped cores, the heel cushion plays an important role in softening the impact of the foot on the hard crescent-shaped core when putting on and taking off the shoes, and in softly wrapping the Achilles tendon while wearing the shoes to improve the feeling of hold. In other words, the ease of putting on and taking off the shoes and the comfort of wearing them can change greatly depending on the performance of the heel cushion. Therefore, there is still room for improvement in the heel cushion to improve the ease of putting on and taking off the shoes and the comfort of wearing them.

[0005] SUMMARY OF THE PRESENT EMBODIMENT An object of the present invention is to provide a pair of short shoes which are easy to put on and take off, provide a good hold on the heels of the feet when the shoes are worn, and are comfortable to wear. [Means for solving the problem]

[0006] According to one aspect of the present invention, there is provided a short shoe having a heel with a built-in moon-shaped core, wherein a cushioned heel pad having a two-layer structure consisting of a hard layer and a soft layer is bent on top of the moon-shaped core to fit the inner surface of the moon-shaped core with the hard layer being attached in close contact with the inner surface of the moon-shaped core, the moon-shaped core with the heel pad is built into the heel, and an interior material is placed over the surface of the heel pad to form a heel cushion from the upper left and right ends of the opening to the rear. Effect of the Invention

[0007] According to the present invention, in a short shoe having a moon-shaped core built into the heel, a heel cushion is formed by attaching a cushioned heel pad with a two-layer structure consisting of a hard layer and a soft layer to the upper part of the moon-shaped core, making the shoes easy to put on and take off and improving the holding feeling of the heel of the foot when wearing the shoes, thereby improving the comfort of the shoes. [Brief description of the drawings]

[0008] [Figure 1] 1 is a perspective photograph of a short shoe (left foot) according to one embodiment of the present invention. [Diagram 2] 1 is a side photograph of a short shoe (left foot) according to one embodiment of the present invention. [Diagram 3] FIG. 2 is a perspective view of an example of a moon-shaped core. [Figure 4] FIG. 2 is a side view of an example of a moon-shaped core. [Diagram 5] FIG. 2 is a perspective view of an example heel pad prior to attachment to a moon-shaped core. [Figure 6] FIG. 2 is a perspective view of a moon-shaped core with a heel pad attached. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0009] Hereinafter, the embodiments of the present invention will be described in detail with reference to the drawings as appropriate. However, more detailed explanations than necessary may be omitted. For example, detailed explanations of already well-known matters or duplicate explanations of substantially identical configurations may be omitted. This is to avoid the following explanation becoming unnecessarily redundant and to facilitate understanding by those skilled in the art. Note that the inventor provides the accompanying drawings and the following explanation so that those skilled in the art can fully understand the present invention, and does not intend to limit the subject matter described in the claims by them. In addition, the dimensions of each member depicted in the drawings, detailed shapes of details, etc. may differ from the actual ones.

[0010] ≪Short shoes≫ Fig. 1 is a perspective photograph of a short shoe (left foot) according to one embodiment of the present invention. Fig. 2 is a side photograph of a short shoe (left foot) according to one embodiment of the present invention. The short shoe 100 according to this embodiment is a short shoe having a heel 10a, such as a business shoe.

[0011] The low shoe 100 is composed of an upper 10 and a sole 20. The upper 10 is composed of an exterior material 11 that forms the outer surface thereof, and an interior material 12 that is attached to the inside of the exterior material 11. The exterior material 11 is composed of a toe leather 11a, a tongue leather 11b, a quarter leather 11c, and a rear quarter leather 11d, all of which are made of natural leather or synthetic leather.

[0012] The toe leather 11a is shaped to cover the top and both sides of the toe, with the top extending to the base of the tongue leather 11b, while the both sides extend to the vicinity of the arch (arch of the foot), and the both sides protruding further back than the top.

[0013] The quarter leather 11c reaches the bottom near the arch, and its lower end in front of the arch is sewn to the toe leather 11a. The front ends of the left and right quarter leathers 11c are arranged facing each other with a gap between them, and a number of lace holes H are provided along the front ends, and the rear ends are sewn together at the heel 10a.

[0014] Below the heel 10a, at the rear of the quarter 11c, a half-moon shaped rear quarter 11d is fitted on the quarter 11c from both the left and right sides to the seam at the rear end of the quarter 11c to reinforce the quarter 11c.

[0015] An elastic shoelace is inserted through the lace holes H, and the left and right quarter leathers 11c are fastened together.

[0016] At the top of the heel 10a of the upper 10, there is a short heel upper end 10b that is semicircular in shape when viewed from the top and slightly curved backward. That is, the heel 10a of the low shoe 100 forms an S-shaped curve in a side view. However, the upper part of the S-shaped curve (the part corresponding to the heel upper end 10b) is extremely short compared to the lower part. The lower part of the S-shaped curve, i.e., the part that holds the heel of the foot, protrudes the most backward, and the most protruding tip of the heel upper end 10b, which corresponds to the tip of the upper part of the S-shape, is located forward (toward the toes) of the most extreme position of the protruding heel 10a.

[0017] The upper end of the most protruding tip of the heel upper end 10b is generally flat in side and rear views, and its height T1 is located below the height T2 of the front end of the opening 13 in the upper 10, where the foot is inserted. As such, the short heel upper end 10b with the tip curved backward is provided at the rear end of the opening 13, making it easy to put on the low shoe 100 without a shoehorn and without crushing the heel 10a.

[0018] At heel 10a, a moon-shaped core (described later) is built in between exterior material 11 and interior material 12. A heel pad (described later) is attached to the upper inner surface of the moon-shaped core, forming heel cushion 14 having a semicircular arc shape in plan view at heel upper end 10b.

[0019] The heel cushion 14 has a tapered shape in which the thickness and vertical width are greatest at the center of the semicircular arc, and the thickness and vertical width taper from there to both the left and right ends of the semicircular arc. With this heel cushion 14 formed at the rear end of the shoe opening 13, the low shoe 100 allows the foot, especially the heel, to be inserted smoothly, and holds the heel of the inserted foot, making it difficult to slip off. Furthermore, when taking off the low shoe 100, the foot, especially the heel, can be pulled out smoothly.

[0020] ≪Moon-shaped core≫ At the heel 10a, a crescent-shaped core made of hard resin is built between the exterior material 11 and the interior material 12 to protect the shape of the heel 10a and to increase stability during walking. Fig. 3 is a perspective view of an example of the crescent-shaped core. Fig. 4 is a side view of an example of the crescent-shaped core.

[0021] The moon-shaped core 30 according to one example has a pear-like shape corresponding to a person's heel. The bottom side 30B of the moon-shaped core 30 is generally flat and has a shape that describes a semicircular arc in a plan view, the same as the bottom part of the heel 10a.

[0022] The left and right tip portions 30L, 30R of the moon-shaped core 30 protrude furthest forward (towards the toes) at a point just below the inner and outer ankles, and from there they curve gently towards the base 30B, are hollowed out slightly towards the rear (towards the heel), and also curve gently upward to form the brim 31.

[0023] The brim 31 corresponds to the internal core of the heel upper end 10b of the upper 10, and like the heel upper end 10b, has a semicircular arc shape in a plan view, gradually curves backward from both the left and right sides of the upper part of the moon-shaped core 30 to the center, and is generally flat when viewed from the side and back.

[0024] The moon-shaped core 30, like the heel upper end 10b, forms an S-shaped curve in side view, and the upper part of the S-shaped curve (the part corresponding to the tsuba 31) is extremely short compared to the lower part. That is, the base part of the tsuba 31 is slightly curved in a vertical cross-sectional arc shape corresponding to the upper narrowing of the back of the heel of the human body, and the tsuba 31 extends upward from the curved part in a generally straight line, although very short.

[0025] The flange 31 is curved backward at an angle closer to the horizontal than to the vertical. The width of the flange 31 in the inward and outward directions is narrower than the width of the bottom surface 30B of the moon-shaped core 30 in the inward and outward directions.

[0026] <Heel pad> A heel pad is attached to the flange 31 on the inner surface of the moon-shaped core 30. Figure 5 is a perspective view of an example of a heel pad before attachment to the moon-shaped core. The heel pad 40 according to one example is a cushioned member with a two-layer structure consisting of a hard layer 41 and a soft layer 42 made of urethane foam or the like.

[0027] The planar shape of the heel pad 40 before attachment to the moon-shaped core 30 is symmetrical, with the vertical width at the center between the left and right ends being the largest, tapering downward to the left and right. As an example, the dimensions of the heel pad 40 are approximately 120 mm in length between the left and right ends, approximately 30 mm in vertical width at the center between the left and right ends, approximately 55 mm in length from both the left and right ends to the topmost center, and approximately 20 mm in thickness (of which the hard layer 41 is approximately 14 mm and the soft layer 42 is approximately 6 mm). The planar dimensions of the heel pad 40 are slightly larger than the flange 31 of the moon-shaped core 30 when spread out flat.

[0028] Both left and right ends of the soft layer 42 of the heel pad 40 are chamfered. Also, a cut 43 is provided in the center between the left and right ends of the heel pad 40, dividing the heel pad 40 into left and right halves, leaving a portion of the upper part. As an example, the length of the cut 43 is approximately 20 mm, and the left and right parts of the heel pad 40 are connected to each other 10 mm above the center between the left and right ends.

[0029] The heel pad 40 as described above can be easily produced, for example, by die-cutting a two-layer sheet consisting of a hard layer and a soft layer, and further by chamfering both the left and right ends.

[0030] 6 is a perspective view of the moon-shaped core with the heel pad attached. The heel pad 40 is bent inward so that both the left and right ends approach each other and fit along the inner surface of the flange 31 of the moon-shaped core 30, with the hard layer 41 on the outside and the soft layer 42 on the inside, and the center between the left and right ends of the heel pad 40 is aligned with the center between the left and right ends of the moon-shaped core 30. The hard layer 41 is attached by being stuck to the inner surface of the flange 31 of the moon-shaped core 30 with, for example, an adhesive.

[0031] Since the heel pad 40 is slightly larger than the flange 31 of the moon-shaped core 30, a part of the heel pad 40 attached to the moon-shaped core 30 protrudes from the flange 31. Furthermore, the provision of the notch 43 at the center between the left and right ends of the heel pad 40 not only makes it easier to bend the heel pad 40 when attaching it to the moon-shaped core 30, but also forms a gentle arc at the upper center between the left and right ends of the bent heel pad 40, and forms a unique shape where the left and right parts are bent in a V-shape at the notch 43.

[0032] The above-mentioned moon-shaped core 30 with heel pad 40 is built into the heel 10a of a low shoe 100. By covering the surface of the heel pad 40 with the interior material 12, the corners of the soft layer 42 of the heel pad 40 are pressed down by the interior material 12 and rounded, and in particular, the part of the moon-shaped core 30 that protrudes from the flange 31 becomes slightly bulging, and further, the chamfered left and right ends are tapered to smoothly connect to the left and right upper ends of the opening 13, forming a heel cushion 14 that smoothly continues to the heel 10a and the opening 13 as shown in FIG.

[0033] 1, a V-shaped bend in the cut 43 of the heel pad 40 appears on the outer shape of the heel cushion 14. By forming such a V-shaped groove in the center of the left and right of the heel cushion 14, the heel of the foot is guided into the V-shaped groove when putting on and taking off the low shoe 100, which, combined with the effect of the curved heel upper end 10b, makes it even easier to put on and take off the low shoe.

[0034] Because the heel pad 40 is bent and deformed when attached to the crescent-shaped core 30, the outer side of the bent heel pad 40 is always subjected to stronger tensile stress than the inner side. Furthermore, because the outer side of the bent heel pad 40 is attached in close contact with the hard surface of the crescent-shaped core 30, it is subjected to stronger compressive stress than the inner side. For this reason, the outer side of the bent heel pad 40 is formed of a hard layer 41 made of a hard material to withstand these tensile and compressive stresses. On the other hand, the inner side of the bent heel pad 40, which is the side that the foot comes into contact with, is formed of a soft layer 42 made of a soft material.

[0035] If the entire heel pad 40 were made of a hard material, not only would it be hard and uncomfortable to wear when putting on and taking off the low shoe 100, but it would also be less stretchable and would easily cause wrinkles in the heel cushion 14. Conversely, if the entire heel pad 40 were made of a soft material, the soft heel pad 40 would be pressed down by the interior material 12, reducing its thickness, which would also make it uncomfortable to wear.

[0036] Therefore, as in this embodiment, it is preferable that the heel pad 40 has a two-layer structure of a hard layer 41 and a soft layer 42. This makes it easier to put on and take off the low shoes 100, and improves the feeling of holding the heel of the foot while wearing the shoes, improving comfort. Another advantage is that the exterior material 11 and the interior material 12 can be easily sewn together when manufacturing the low shoes 100.

[0037] Furthermore, it is preferable that the thickness of the hard layer 41 and the soft layer 42 be balanced so that the hard layer 41 is thin and the soft layer 42 is thick, thereby achieving both durability and comfort.

[0038] <<Variations>> The low shoes according to the present invention are not limited to so-called slip-in type low shoes in which the upper end 10b of the heel is slightly curved backward. Therefore, the brim 31 may not be provided on the moon-shaped core 30. In this case, the heel pad 40 may be attached to the inner surface of the upper part of the moon-shaped core 30. Furthermore, the low shoes according to the present invention are not limited to business shoes, but may be any low shoes with a heel, such as sneakers.

[0039] The heel pad 40 may be constructed by preparing the hard layer 41 and the soft layer 42 separately and bonding them together. In this case, the hard layer 41 and the soft layer 42 can be made different in shape and size from each other. For example, by making the hard layer 41 slightly smaller than the soft layer 42 and increasing the proportion of the soft layer 42 in the heel pad 40, it is possible to improve comfort while ensuring durability.

[0040] The hard layer 41 and the soft layer 42 of the heel pad 40 may be made to have the same thickness. However, it is preferable to avoid making the hard layer 41 thicker than the soft layer 42, because this may cause the above-mentioned problems.

[0041] The left and right ends of the hard layer 42 of the heel pad 40 may be chamfered instead of the soft layer 41. Alternatively, the left and right ends of the heel pad 40 do not have to be chamfered. Even if the left and right ends of the heel pad 40 are not chamfered, it is possible to make the left and right ends of the heel cushion 14 tapered by appropriately selecting and adjusting the density of the urethane foam that constitutes the heel pad 40 and the tension of the interior material 12.

[0042] The heel pad 40 does not necessarily have to have the notch 43. Even without the notch 43, the heel pad 40 is flexible and can be bent.

[0043] As described above, the embodiment has been described as an example of the technology of the present invention. For this purpose, the attached drawings and detailed description have been provided. Therefore, among the components described in the attached drawings and detailed description, not only components essential for solving the problem but also components that are not essential for solving the problem in order to illustrate the above technology may be included. Therefore, just because those non-essential components are described in the attached drawings or detailed description, it should not be immediately recognized that those non-essential components are essential. In addition, since the above-mentioned embodiment is intended to illustrate the technology of the present invention, various modifications, substitutions, additions, omissions, etc. may be made within the scope of the claims or their equivalents. [Explanation of symbols]

[0044] 100 short shoes 10a Heel 12 Interior materials 13 Opening 14 Heel cushion 30 moon-shaped core 31 Tsuba 40 Heel pad 41 Hard layer 42 Soft layer 43 Cut

Claims

1. A low shoe having a heel with a built-in moon-shaped core, A cushioned heel pad having a two-layer structure consisting of a hard layer and a soft layer is bent on the upper part of the moon-shaped core so that the hard layer is attached in close contact with the inner surface of the moon-shaped core, The moon-shaped core with the heel pad is built into the heel, and the surface of the heel pad is covered with an interior material to form a heel cushion from the left and right upper ends of the opening to the rear. These short shoes are characterized by:

2. The shoe according to claim 1 , wherein the soft layer is thicker than the hard layer.

3. 3. The low shoe according to claim 2, wherein the heel pad is formed by molding a sheet having a two-layer structure consisting of the hard layer and the soft layer.

4. The heel pad has a symmetrical planar shape, the vertical width is greatest at the center between the left and right ends, and the heel pad tapers downward on both sides.

4. The low shoe according to claim 1, wherein the heel pad is bent along the inner surface of the moon-shaped core and is attached to the moon-shaped core with a part of the heel pad protruding from an upper part of the moon-shaped core.

5. 5. The low shoe according to claim 4, wherein said heel pad has a cut in the center between the left and right ends thereof, dividing said heel pad into left and right halves, leaving a portion of an upper portion.

6. The shoe according to claim 4, wherein both left and right ends of said heel pad are chamfered.

7. The shoe according to claim 5, wherein both left and right ends of said heel pad are chamfered.

8. The moon-shaped core has a flange that gradually curves backward from both the left and right sides of the upper part to the center, The shoe according to claim 4, wherein said heel pad is attached to said flange of said moon-shaped core.

9. The moon-shaped core has a flange that gradually curves backward from both the left and right sides of the upper part to the center, The shoe according to claim 5, wherein the heel pad is attached to the brim of the moon-shaped core.

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