Shoes that can be quickly put on and taken off, and a crescent-shaped support built into the heel of the shoes.

Abstract

These shoes allow for quick and easy on and off without using your hands, providing superior comfort. [Solution] A shoe is disclosed that can be quickly put on and taken off without the need for manual assistance, and a shoe with a crescent-shaped core built into the heel of the shoe, which includes a sole, to which an upper is attached, to which an opening is provided at the top of the upper, to which a heel is provided at the end of the upper, to which an upper is provided at one end of the upper, to which a tongue is provided on the instep side of the opening, to which an elastic cord is tied at the top of the tongue, or a tongue with woven elastic is provided only at the opening, to which a toe is provided at the other end of the upper away from the heel, a crescent-shaped core is built into the inside of the heel, and the area around the crescent-shaped core is covered with the outer material, lining material, sponge, etc. of the shoe. The shoe has a crescent shape, the upper part extends to the top of the rear of the opening, and a sponge pad material is provided on the inside.

Description

Technical Field

[0001] The present invention relates to shoes that can be quickly attached and detached and a moon-shaped core built into the heels of the shoes.

Background Art

[0002] Conventionally, the heel part of shoes often uses a hard counter to improve the stability and safety of the heel bone of the heel, effectively protect the ankle, and give stability to walking. However, after inserting the foot into the shoe when putting on the shoes, it is necessary to lift the heel of the shoe by hand and straighten the members around the opening part before the shoes can be fully put on, which is very inconvenient. Especially for the elderly, pregnant women, and people who have difficulty putting on shoes with their hands because they are holding something in both hands, people with weak hand strength, and people who need to change shoes frequently, such inconvenience is particularly prominent.

[0003] Therefore, various studies and designs have been attempted to achieve quick attachment and detachment of shoes without using hands. For example, as disclosed in Patent Document 1, by extending the moon-shaped core of the heel without using hands, the foot can be directly guided into the shoe. Since the moon-shaped core of the heel of these shoes is significantly extended backward, the structure is remarkable in appearance, the design of the shoes is limited, and they lack fashionability.

[0004] Currently, most of the commercially available shoes that can be quickly attached and detached without using hands use a moon-shaped core with an ugly shape at the heel or a prominent guide part at the heel, so problems such as the hem of the trousers being caught in the shoes have an adverse impact on the appearance of the shoes and life, and moreover, the periphery of the opening part is hard, so there is a problem that it is easy to feel uncomfortable and unnatural when putting on the shoes.

Prior Art Documents

Patent Documents

[0005]

Patent Document 1

Patent Document 2

Patent Document 3

[0006] To solve the above technical problems, the present invention provides the following technical means: A shoe that can be quickly put on and taken off, including a sole, and a crescent-shaped stiffener built into the heel of the shoe, wherein a leather upper is attached to the sole, an opening is provided at the top of the leather upper, a heel of the shoe is provided at the end of the leather upper, an upper is provided at one end of the leather upper away from the heel of the shoe, a tongue is provided at the top of the upper, an elastic cord is tied to the top of the tongue, or there are no shoelaces, a woven elastic and a tongue are provided at the opening, and a toe is provided at one end of the upper away from the leather upper, A shoe that can be quickly put on and taken off, and a shoe with a crescent-shaped core built into the heel of the shoe, wherein the crescent-shaped core is provided on the inside of the heel of the shoe, the crescent-shaped core is U-shaped, the upper part of the crescent-shaped core extends to the top of the rear of the opening of the shoe, a notch is provided at the bottom of the crescent-shaped core, a recessed groove is provided at the top of the crescent-shaped core in the heel direction, a sponge pad material is provided on the inside, and a slot is provided at the top from the recessed groove to the crescent-shaped core.

[0007] Possible improvements include using elastic laces, or eliminating laces altogether and adding woven elastic to the inside and outside of the opening, along with a tongue.

[0008] The improvement involves covering the outside of the crescent-shaped core with the shoe's outer material, while the inside has sponge and lining material.

[0009] As an improvement, the crescent-shaped core should have a consistent thickness, with the thickest part in the middle and becoming slightly thinner from the middle to the periphery. It requires strength and durability, and should be made of a material that can recover its original shape after deformation.

[0010] As an improvement, the cross-section of the crescent-shaped core, when viewed from the side, exhibits an S-shape. The upper edge of the crescent-shaped core has a shape that curves outward.

[0011] As an improvement, the recessed groove is elongated, horizontal to the ground, and perpendicular to the midline of the crescent-shaped core. The recessed groove portion consists of one or more recessed grooves, or is a hole-like structure that penetrates the thickened section.

[0012] As an improvement, the recessed groove is a groove with a circular arc cross-section, or a right-angle recessed groove or hole.

[0013] As an improvement, the sides of the bottom of the crescent-shaped core are extended by a certain length towards the toe, and the length of the sides of the crescent-shaped core gradually shortens towards the top, creating a slope from the top to the bottom of the crescent-shaped core.

[0014] The advantages of this invention compared to conventional technology are that it allows for quick and easy putting on and taking off of shoes without using hands, while also being aesthetically pleasing and highly practical. The overall appearance of the design is indistinguishable from ordinary shoes, while also adding functionality. By considering practicality while maintaining aesthetic appeal, the shoes reach a high level in terms of both functionality and aesthetic value.

[0015] With the above configuration, it is possible to quickly put on and take off shoes without using hands, and the shoes are durable and long-lasting. In addition, deformation of the heel of the shoe is prevented, and it is possible to avoid an unsightly appearance caused by excessive exposure of the guide part of the heel of the shoe. Moreover, it is possible to provide shoes that are comfortable to wear. Further, it is possible to provide shoes that can be worn while standing, without the need to bend the waist or sit, thereby obtaining better convenience. Since the lunar core is built into the heel of the shoe, the upper part of the lunar core does not have an extra height that affects the appearance of the shoe and a length that is intentionally extended backward to guide the foot into the shoe, so it looks no different from ordinary shoes in appearance. Therefore, it has a good appearance, does not limit the design of the shoes, has high versatility, and high practicality. Since the lunar core is molded with resin, it is possible to maintain good comfort and also play a role in protecting the foot. By covering the entire back side of the lunar core with a cushioning material, it is possible to provide shoes with excellent comfort.

Brief Description of the Drawings

[0016] [Figure 1] It is a schematic configuration diagram of the present invention. [Figure 2] It is a schematic configuration diagram of the lunar core of the present invention. [Figure 3] It is a schematic side view of the present invention. [Figure 4] It is a schematic f-f cross-sectional view of the present invention. [Figure 5] It is a schematic configuration diagram of the heel of the shoe of the present invention. [Figure 6] It is a schematic configuration diagram 2 of the lunar core of the present invention. [Figure 7] It is a schematic configuration diagram 3 of the lunar core of the present invention. [Figure 8] It is a schematic configuration diagram of an embodiment of the lunar core of the present invention. [Figure 9] It is a schematic assembly diagram of the lunar core of the present invention. [Figure 10] It is a schematic diagram of the usage state of the lunar core of the present invention. [Figure 11] It is a step diagram of wearing the shoes of the present invention.

Modes for Carrying Out the Invention

[0017] The present invention will be described in more detail below with reference to the drawings.

[0018] When the present invention is specifically implemented, all types of shoes, sandals, short boots, etc., having the above-mentioned material in the sole, heel, instep, and ankle can be used.

[0019] Shoes are equipped with a heel or a heel counter.

[0020] The crescent-shaped core can be molded as a shoe component from a resin that possesses both hardness, elasticity, and toughness, such as TPR, TPU, or rubber. Its hardness is preferably 65 degrees or higher, and it may be press-molded from a press-mold material. The crescent-shaped core has a consistent thickness, with the thickest part in the middle and becoming slightly thinner from the middle to the periphery. Strength and durability are required, and it is made of a material that can recover its original shape after deformation, making it resistant to tearing and damage even when stepped on.

[0021] A crescent-shaped core is embedded in the heel of the shoe between the upper material, cushioning material, and lining material. The core itself is hard, but it is surrounded by soft cushioning material and the lining material of the shoe.

[0022] The crescent-shaped support extends to the very top of the heel of the shoe, and the heel height does not exceed the height of the tongue at the opening and towards the toe, giving it the appearance of a normal shoe, and it does not extend unnecessarily upwards at the back of the shoe.

[0023] The crescent-shaped core has an arc shape towards the heel of the shoe, with the apex of the arc located within the width of the sole. In the lateral cross-section of the crescent-shaped core, it forms an S-shaped curve, and the uppermost part that protrudes towards the heel of the shoe is inclined backward by 15° or less relative to the vertical, with the edge curving outward. The edges on the left and right sides of the upper region of the crescent-shaped core are also all slightly curved outward. The lower part of the crescent-shaped core has a certain length from the heel of the shoe towards the toes, and to prevent it from touching the ankle on the outside of the foot, the length of the side of the crescent-shaped core gradually shortens as it moves from the lower to the upper part, becoming sloping from the opening side to the bottom side of the shoe.

[0024] The more detailed shape of the crescent-shaped core is shown in the drawing.

[0025] In the upper region of the crescent-shaped core, a vertical slit is provided at the center in the left-right direction. The width of the slit is not particularly limited, and it is sufficient if it is in a torn state. The slit extends from the upper edge to the boundary between the upper and middle sections. This slit is connected to an elongated elliptical or circular groove or hole located at the boundary between the upper and middle sections on the outside of the crescent-shaped core, oriented horizontally to the ground. The size of the ellipse and circle can be adjusted according to the required strength of the upper part of the crescent-shaped core. On both sides of this ellipse and circle, a single long, thick groove or multiple thin grooves are provided in the horizontal direction. When these grooves are compressed, they can be deformed like springs, and after the pressure is released, they have the ability to return to their original position.

[0026] Alternatively, the slit structure is provided only at the top of the crescent-shaped core, with the split portion of the slit ending at the boundary between the top and middle sections, and a single long, thick groove or multiple thin grooves provided at the front end of the slit in a horizontal direction perpendicular to the vertical center line, with the grooves not penetrating the entire thickness.

[0027] As shown below, it may have any of the four forms, or any combination of the structures in 1 to 4.

[0028] The cross-section of the groove can be arc-shaped, acute, or right-angled, and it can be deformed, or, depending on the properties of the resin, it can provide elasticity and return to its original state.

[0029] 1. The front end of the slit is elliptical and connected to the slit portion, and penetrates the wall thickness. On both the left and right sides of the ellipse, a groove is provided that maintains a certain thickness in the direction of the horizontal ground. The length of the groove does not extend to the edge of the crescent core, and the distance from the end of the groove to the edge of the crescent core is at least one-eighth of the total length of the horizontal cross-section of the crescent core at this point.

[0030] 2. The front end of the slit is circular and connected to the slit portion, penetrating the wall thickness. A single groove is provided on both the left and right sides of the circle, running horizontally in the direction of the ground, with a certain thickness remaining. The length of the groove does not extend to the edge of the crescent core, and the distance from the end of the groove to the edge of the crescent core is at least one-eighth of the total length of the horizontal cross-section of the crescent core at this point.

[0031] 3. The slit ends at the boundary between the upper and middle sections. The front end of the slit forms a single elongated groove along the horizontal ground at the boundary between the upper and middle sections. The groove wall is thinner than the main body but does not penetrate its thickness. The groove length does not extend to the edge of the crescent core, and the distance from the end of the groove to the edge of the crescent core is at least one-eighth of the total length of the horizontal cross-section of the crescent core at this point.

[0032] 4. The slit ends at the boundary between the upper and middle sections. The front end of the slit forms several thin grooves that run horizontally along the boundary between the upper and middle sections. The thickness of the walls of each thin groove is thinner than that of the main body, but they do not penetrate the main body. The length of the grooves does not extend to the edge of the crescent core, and the distance from the end of the grooves to the edge of the crescent core is at least one-eighth of the total length of the horizontal cross-section of the crescent core at this point.

[0033] The structure of the slit section is such that when the foot steps on the top of the crescent-shaped core, the pressure from the foot causes the slit section to naturally branch to the left and right, widening the area on the inside of the top of the crescent-shaped core that receives the foot, and the opening widens in the X direction, becoming larger. This further helps to slide the foot smoothly into the shoe, achieving the goal of being able to put on the shoe quickly without using hands. After the foot is in the shoe, the elasticity of the resin causes the slit section to return to its original position. The elliptical and circular designs at the front end of the slit are also auxiliary functional structures that help the slit to quickly return to its original position after it has branched.

[0034] Here, the structure of one thick groove or multiple thin grooves, when the foot puts weight on the top of the heel cushion when wearing the shoe, is compressed temporarily like a spring, causing the top of the heel cushion to naturally tilt behind the heel of the shoe, increasing the angle with respect to the vertical line of the ground from 15° to 30-45°. Due to the expansion and contraction of the elastic band at the opening or the shoe's elastic laces, the opening widens in the Y direction. At the same time, some of the pressure acting on the top of the heel cushion is transmitted to the heel cushion in the toe direction through the thickness between the end of the lateral groove and the edge of the heel cushion, causing the inner and outer parts of the heel cushion in the toe direction to expand outwards. As both sides of the heel cushion in the toe direction expand in the X direction, the opening of the shoe also widens in the X direction, making it easier to insert the foot and allowing the shoe to be put on quickly without using hands. After the foot is in the shoe, the groove returns to its original position due to the elasticity of the resin.

[0035] Since the slit and the entire crescent-shaped core are embedded in the upper of the shoe's heel, the degree to which the crescent-shaped core separates under pressure is limited by the shoe material covering the core, keeping it within a certain range and preventing it from opening indefinitely. Even if the front of the crescent-shaped core expands, the lower part of the core remains firmly attached to the sole, and the small, repeated deformations and recovery that occur when putting on and taking off the shoes are all completed within a short time, without adversely affecting the original function of the shoe's heel.

[0036] By placing cushioning material on the inner surface of the crescent-shaped core and in the middle range of the space above and below the core, according to the Achilles tendon position, the shoe's enveloping feel and the wearer's experience can be improved. The cushioning material can be EVA sponge, rubber sponge, latex foam, etc.

[0037] The crescent-shaped core itself has hardness as a core material that maintains the shape of the shoe's heel, but because cushioning material is attached to both the inside and outside, the foot does not feel too hard.

[0038] The slit at the top of the crescent-shaped core opens and recovers, the lateral groove structure on the back of the crescent-shaped core compresses and recovers, and cushioning material is placed on the outside of the entire crescent-shaped core. This effectively reduces the force response and impact caused by the foot stepping on the crescent-shaped core when the shoe wearer puts on the shoe, eliminating the discomfort caused by the hard crescent-shaped core attached to the heel of conventional shoes, greatly improving the comfort of wearing the shoe, making it more comfortable, and allowing the shoe to be put on quickly without using hands.

[0039] The slits or grooves provided on the upper part of the crescent-shaped core open and return to their original state when the shoes are repeatedly put on and taken off, or they are compressed and return to their original state, and this process is repeated.

[0040] The entire movable part is within a certain range, and is only a small portion of the upper part of the crescent-shaped core. This allows the shoe's heel to function as a shape-retainer to be fully utilized, making it more convenient and comfortable than conventional shoes. Furthermore, the structure of this crescent-shaped core does not negatively affect the functionality of the shoe.

[0041] Multiple notches are provided on the lower edge of the crescent-shaped core, which allows the crescent-shaped core to fit the shape of the heel of the shoe last during shoe molding, thereby reducing resistance during the molding process.

[0042] The crescent-shaped core is embedded between the upper, lining, and cushion of the shoe, and is integrated with the shoe material, following the shape and width of the heel portion of the sole, and connected and fixed to the inside of the edge of the sole. The height of the edge of the inner bonding surface of the sole can be deep or shallow depending on the type of shoe, and it is necessary to adjust the structure of the lower edge of the crescent-shaped core according to the height of the edge of the sole used. If the depth of the side wall around the sole bonding surface is 8 mm or more, the lower edge of the crescent-shaped core can be left as is, and sufficient bonding and fixing strength can be obtained between the sole, the crescent-shaped core, and the upper. However, if the edge of the sole is shallow, or if the bonding surface of the sole is flat, the bonding area between the crescent-shaped core and the sole is small, and sufficient strength cannot be obtained. In such cases, it is necessary to provide a structure such as the multiple structural scaffolds shown in Figure 9, which can be bent inward and bonded to the sole surface to strengthen the bonding area and strength.

[0043] In the operating principle of this invention, three steps are required to quickly put on the shoes: place the foot above the heel of the shoe and step on the top of the crescent-shaped support.

[0044] The heel places weight on the crescent-shaped support, which opens and compresses as described above. Simultaneously, the elasticity of the woven elastic or elastic cord at the opening changes, guiding the foot and allowing it to slide quickly into the shoe. This entire process is completed in an instant, allowing the foot to be quickly inserted into the shoe without using hands. After the foot is in the shoe, the crescent-shaped support returns to its original position due to the properties of the resin, without any disruption to the shoe's original function.

[0045] The above structure provides the following benefits: When putting on shoes, the wearer does not need to bend over, squat, or use their hands to put on the shoes; the goal of putting on shoes can be achieved smoothly without the need for assistance. The shoes maintain their basic function while making them easier and quicker to put on and take off. When taking off shoes, the toes of one foot can be pressed against or placed against the heel of the other shoe to secure it, and the foot can be easily removed by simply lifting it.

[0046] Although the above examples have been described, these examples are illustrative and should not be understood as limiting the present invention. Those skilled in the art should understand that they can modify, alter, substitute, and transform the above examples within the scope of the present invention without departing from the principles and spirit of the present invention. [Explanation of symbols]

[0047] 1 Sole 2 Upper leather 3. Opening 4. Heel of the shoe 5 Upper 6. Tongue 7 Elastic cord 8 Toe September-shaped core 10 Notches 11 Recessed groove 12 Sponge pad material 13 slots 14 Woven elastic 15. Shoe upper material

Claims

1. A shoe that can be quickly put on and taken off, including a sole 1, and a crescent-shaped stiffener built into the heel of the shoe, wherein a leather upper 2 is attached to the sole 1, an opening 3 is provided at the top of the leather upper 2, a heel 4 is provided at the end of the leather upper 2, an upper 5 is provided at one end of the leather upper 2 away from the heel 4, a tongue 6 is provided at the top of the upper 5, an elastic cord 7 is tied to the top of the tongue 6, and a toe 8 is provided at one end of the upper 5 away from the leather upper 2, A crescent-shaped core 9 is provided on the inside of the heel 4 of the shoe, the crescent-shaped core 9 is U-shaped, the upper part of the crescent-shaped core 9 extends to the top of the rear of the opening 3, a notch 10 is provided on the bottom of the crescent-shaped core 9, a recessed groove 11 is provided on the outer top of the crescent-shaped core 9, a sponge pad material 12 is provided on the inside, and a slot 13 is provided at the top from the recessed groove 11 to the crescent-shaped core 9. In the upper region of the crescent-shaped core, a vertical slit (slot 13) is provided at the center in the left-right direction. The slit (slot 13) extends from the upper edge to the boundary between the upper and middle sections. This slit (slot 13) is connected to an elongated elliptical or circular groove or hole located at the boundary between the upper and middle sections on the outside of the crescent-shaped core, oriented to maintain a horizontal position relative to the ground. On both sides of this ellipse or circle, a single long, thick groove or multiple thin grooves are provided in the horizontal direction. When these grooves (recessed grooves 11) are compressed, they can be deformed like springs, and after the pressure is released, they have the ability to return to their original position. A shoe that can be quickly put on and taken off, and a crescent-shaped core built into the heel of the shoe, characterized by the above.

2. The shoe according to claim 1, which can be quickly put on and taken off, and a crescent-shaped core built into the heel of the shoe, characterized in that it uses a highly elastic rubber cord 7.

3. The shoe that can be quickly put on and taken off, and the shoe with a crescent-shaped core built into the heel of the shoe, characterized in that the outer material 15 of the shoe covers the outside of the crescent-shaped core 9, and the inside has a sponge 12 and a shoe lining.

4. The crescent-shaped core 9 has a consistent thickness, with the thickest part in the middle and becoming slightly thinner from the middle to the periphery, and is made of a material that requires strength and durability and has the ability to return to its original state after deformation, as described in claim 1, a shoe that can be quickly put on and taken off, and a crescent-shaped core built into the heel of the shoe.

5. The quick-to-wear shoe and the crescent-shaped core built into the heel of the shoe, characterized in that the cross-section of the lateral curve of the crescent-shaped core 9 is S-shaped.

6. The recessed groove 11 is elongated and perpendicular to the midline of the crescent-shaped core 9, and the recessed groove 11 portion is composed of one or more recessed grooves, or has a hole-like structure that penetrates the thickened portion, as described in claim 1, a shoe that can be quickly put on and taken off, and a crescent-shaped core built into the heel of the shoe.

7. The quick-to-wear shoe and the crescent-shaped core built into the heel of the shoe, characterized in that the portions on both sides of the bottom of the crescent-shaped core 9 extend a certain length toward the toe, and toward the top of the crescent-shaped core 9 the length of the portions on both sides of the crescent-shaped core 9 gradually shortens, and the crescent-shaped core 9 has a sloping shape from the top to the bottom, as described in claim 1.

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