Moon-shaped core and low boots equipped with the same

Abstract

To provide a moon-shaped sole which makes it easy to put on and take off shoes, and low boots equipped with the same. [Solution] A moon-shaped core 1 used in low boots with an opening below the ankle, characterized by comprising: a hard main body 10 made of thermoplastic elastomer, having a uniform thickness overall and formed in a U-shape in a planar view; a lower curved portion 20 located on the sole side of the main body of the low boot, with its rear surface rounded and protruding backward in a side view, covering the entire underside of the heel; an upper support portion 30 located on the opening side of the main body of the low boot, which bends outward to support the heel; and a middle curved portion 40 located between the lower curved portion and the upper support portion of the main body, with its rounded and protruding forward in a side view, covering part of the upper side of the heel.

Description

[Technical Field]

[0001] The present invention relates to a moon-shaped sole and a low boot equipped with the same. More specifically, the present invention relates to a moon-shaped sole and a low boot equipped with the same that make it easy to put on and take off shoes. [Background technology]

[0002] Conventionally, when putting on shoes, it was necessary to support the heel with one's hand or use a shoehorn to prevent the heel from losing its shape. In recent years, various shoes that can be easily put on and taken off without using a shoehorn have been proposed, and the prior art underlying these proposals will be explained based on patent documents.

[0003] A technology is known relating to a rigid shoe heel core that has a lower support portion that is curved to wrap around the heel of the human body and an upper support portion that receives the heel of the human body above the lower support portion (see, for example, Patent Document 1). [Prior art documents] [Patent documents]

[0004] [Patent Document 1] Patent No. 7569114 Summary of the Invention [Problem to be solved by the invention]

[0005] However, the technology described in Patent Document 1 requires that the heel portion of the shoe using the shoe heel core be designed high and high-cut, which results in a problem of reduced design freedom.

[0006] The present invention was developed based on this social and technological background and achieves the following objectives: The objective of the present invention is to make it easier to put on and take off shoes while ensuring freedom of design. [Means for solving the problem]

[0007] To achieve the above object, the present invention takes the following measures. (1) The moon-shaped core of claim 1 is a moon-shaped core (1) used for low boots whose opening is below the ankle, and is characterized by comprising: a hard main body (10) made of a thermoplastic elastomer, having a uniform thickness overall and formed in a U-shape in a planar view; a lower curved part (20) located on the sole side of the main body of the low boot, with its rear surface rounded and protruding backward in a side view, covering the entire underside of the heel; an upper support part (30) located on the opening side of the main body of the low boot, curving outward to support the heel; and a middle curved part (40) located between the lower curved part (20) and the upper support part (30) of the main body, with its rounded and protruding forward in a side view, covering part of the upper side of the heel. (2) The low boots of claim 2 are characterized by having the moon-shaped core described in claim 1. [Effects of the Invention]

[0008] As explained above, the moon-shaped core of the present invention and the shoes equipped with it make it easy to put on and take off the shoes while ensuring freedom of design. [Brief explanation of the drawings]

[0009] [Figure 1] FIG. 1 is an external view showing a pair of low shoes S. FIG. [Figure 2] FIG. 2 is an external view showing the moon-shaped core 1. As shown in FIG. [Figure 3] FIG. 3 is a cross-sectional view showing a cross section of the moon-shaped core 1. As shown in FIG. [Figure 4] FIG. 4 is a side view showing the low boot S. DETAILED DESCRIPTION OF THE INVENTION

[0010] First Embodiment A first embodiment of the present invention will be described in detail with reference to the drawings. Fig. 1 is an external view of a low shoe S. Fig. 2 is an external view of a moon-shaped core 1. Fig. 3 is a cross-sectional view of the moon-shaped core 1.

[0011] [Short shoes S] The low boots S are shoes that are lower than the ankle and have an opening that is below the ankle. The low boots S in this example are of the open lacing type, in which the leather part with the holes for the shoelaces is placed on the outside of the leather part of the upper. The low boots S are composed of upper leather S1, open lacing S2, decorative leather S3, outside counter S4, inner leather S5, shoelaces S6, sole S7, lining S8, and outsole S9. The low boots S have a crescent-shaped core 1 placed in the heel part.

[0012] [Moon-shaped core 1] The moon-shaped core 1 is a component used in low boots with an opening below the ankle. The moon-shaped core 1 firmly supports the heel, stabilizing the foot so it does not wobble while walking and preventing the shoe from losing its shape. The moon-shaped core 1 is formed from a hard thermoplastic elastomer by injection molding or the like. The moon-shaped core 1 is composed of a main body 10 in which a lower curved portion 20, an upper support portion 30, and a middle curved portion 40 are integrally molded.

[0013] [Main body 10] The main body 10 is a rigid member having a uniform thickness throughout, a U-shape in plan view, and a crescent shape in side view. The main body 10 is formed from a rigid thermoplastic elastomer by injection molding or the like. The main body 10 is formed so that both ends of the U-shape open when a predetermined force is applied.

[0014] [Lower curved portion 20] The lower curved portion 20 is located on the outsole S9 side of the main body 10 of the low boot S, and is a component that has a rounded rear surface that protrudes backward in side view and covers the entire underside of the heel. As shown in Figure 2, the lower curved portion 20 is U-shaped with both ends open so as to cover the user's heel. As shown in Figure 3, the lower curved portion 20 has a rounded rear surface that protrudes backward in side view. The lower curved portion 20 is formed to protrude more forward as it approaches the outsole S9. Both ends of the lower curved portion 20 are located most forward in the moon-shaped core 1. The bottom surface of the lower curved portion 20 is structured to form a straight line in side view and to be positioned horizontally on the flat outsole S9.

[0015] [Upper receiving portion 30] The upper receiving portion 30 is located on the opening side of the main body of the shoe and is a member that curves outward to receive the heel. As shown in FIG. 4, the upper receiving portion 30 has a U-shape with both ends slightly open in a plan view, and is a reduced-size version of the lower curved portion 20 in a plan view. The size of the upper receiving portion 30 in a plan view is formed to match the shape of the heel in a plan view. In a side view, the rear surface of the upper receiving portion 30 is configured to curve upward and diagonally backward, continuing from the middle curved portion 40.

[0016] [Middle curved section 40] The middle curved portion 40 is disposed between the lower curved portion 20 and the upper receiving portion 30 in the main body, has a rounded shape that protrudes forward in a side view, and covers part of the upper side of the heel. The middle curved portion 40 is less curved than the lower curved portion 20, and the middle curved portion 40 as a whole is formed into a shape that corresponds to the heel of a human body.

[0017] [How to wear S-size short boots] Next, how to put on the low boots S will be explained with reference to Figure 4. Figure 4 is a side view showing the low boots S. The user inserts the toe into the opening of the low boots S and places the heel on the upper support portion 30 of the moon-shaped core 1. When the user applies a predetermined force to the heel, both ends of the main body portion 10 spread apart, causing the heel to slide from the upper support portion 30 to the middle curved portion 40 and then to slide down to the lower curved portion 20. The user can easily put on the low boots S by simply applying force to the heel.

[0018] The above is an explanation of an embodiment of the shoe of the present invention, but the present invention is not limited to this embodiment and can be modified within the scope of the purpose and intent of the present invention. The shoe of this embodiment has been explained as a so-called external wingtip shoe, but it goes without saying that it can also be an internal wingtip shoe. The moon-shaped core 1 can be made of thermoplastic elastomers such as styrene, polyurethane, and polyester, as well as other hard synthetic resins. [Explanation of symbols]

[0019] 1: Moon-shaped core 10: Main body 20: Lower curved part 30: Upper receiving part 40: Central curve 50: Telescopic part

Claims

1. A moon-shaped core (1) used for low boots with an opening below the ankle, A hard main body portion (10) formed of a thermoplastic elastomer, having a uniform thickness overall, and formed in a U-shape in a plan view; a lower curved portion (20) located on the outer sole side of the main body portion, the rear surface of which is rounded and protrudes rearward in a side view, and which covers the entire lower side of the heel; an upper receiving portion (30) located on the opening side of the main body of the shoe and curved outward to receive the heel; a middle curved portion (40) disposed between the lower curved portion (20) and the upper receiving portion (30) in the main body portion, having a rounded shape that protrudes forward in a side view and covers a part of the upper side of the heel; A moon-shaped core characterized by comprising:

2. A low boot comprising the moon-shaped core according to claim 1.

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