Shoe capable of being quickly put on and taken off, and crescent-shaped core built into heel

Abstract

A shoe capable of being quickly put on and taken off, and a crescent-shaped core (9) built into a heel (4). The shoe comprises a sole (1), wherein an upper (2) is mounted on the sole (1), a topline (3) is provided at the top of the upper (2), the heel (4) is arranged at an end portion of the upper (2), a vamp (5) is provided at one end of the upper (2), the topline (3) is provided with a tongue (6) in an instep direction, an elastic shoelace (7) is tied at the top of the tongue (6), and a toe cap (8) is provided at the other end of the vamp (5) away from the heel (4); and the crescent-shaped core (9) is concealed on the inner side of the heel (4), and the periphery of the crescent-shaped core (9) is covered by the vamp (5) and a shoe lining material. The crescent-shaped core (9) is U-shaped, and a sponge cushion (12) is provided on the inner side of the top end of the upper portion of the crescent-shaped core (9) extending to the rear portion of the topline (3). The shoe can be quickly put on and taken off without the help of hands, has a good appearance, is compatible with various shoe designs, and offers high versatility and comfort.

Description

Shoes that can be quickly put on and taken off, and a crescent-shaped core built into the heel. Technical Field

[0001] This invention relates to a shoe that can be quickly put on and taken off, and a crescent-shaped core embedded in the heel of the shoe. Background Technology

[0002] Traditional shoes often use a rigid heel counter to improve the stability and safety of the heel bone, effectively protecting the ankle and providing stability while walking. However, when putting on shoes, after inserting the foot, one needs to pull up the heel and adjust the parts around the shoe opening by hand to fully put the shoe on, which is extremely inconvenient. This inconvenience is particularly pronounced for the elderly, pregnant women, people who have difficulty bending over or squatting, those who have difficulty using their hands to put on shoes while holding things, people with weak hand strength, and those who need to frequently change shoes.

[0003] Therefore, various research and designs have been attempted to create shoes that allow for quick and easy on and off without using one's hands. For example, as disclosed in Patent Document 1, these shoes guide the foot directly into the shoe without the aid of hands, thanks to an extended heel crescent-shaped core. However, because the heel crescent-shaped core is extended significantly backward, these shoes have an obvious structural feature, which limits their design and makes them lack style.

[0004] Currently, shoes that can be quickly put on and taken off without using hands almost always have an ugly shape at the heel or a crescent-shaped core with a prominent heel guide. As a result, problems such as trouser legs getting caught in the shoes negatively impact the appearance and quality of life. Moreover, because the shoe opening is very stiff, it can easily cause discomfort and an unnatural feeling when wearing the shoes.

[0005] [Patent Document 1]

[0006] Special lottery number 2022-139151

[0007] Dengshi 3212460

[0008] WO-A1-2022 / 130537

[0009] Dengshi 3195071

[0010] Dengshi 3235968

[0011] Patent 7289471

[0012] EP-A1-002204102

[0013] Special lottery number 2003-052410

[0014] Special form 2022-530486 Summary of the Invention

[0015] To solve the above-mentioned technical problems, the technical solution provided by the present invention is as follows: a shoe that can be quickly put on and taken off, and a crescent-shaped core built into the heel of the shoe, including a sole, an upper installed on the sole, an opening at the top of the upper, a heel at the end of the upper, an upper at the end of the upper away from the heel, a tongue at the top of the upper, an elastic lace tied to the top of the tongue or no lace but only an elastic band and a tongue at the opening, and a toe at the end of the upper away from the upper;

[0016] The crescent-shaped core is located on the inside of the heel of the shoe. The crescent-shaped core is U-shaped and extends to the top of the back of the shoe opening. There is a cut at the bottom of the crescent-shaped core. There is a recessed groove at the top of the outer side of the crescent-shaped core and a sponge padding material on the inner side. There is a groove from the recessed groove to the top of the crescent-shaped core.

[0017] As an improvement, there are elastic laces or no laces, with only an elastic band on the tongue at the side of the shoe opening.

[0018] As an improvement, the crescent-shaped core is covered with the upper material. The inside has sponge and lining material.

[0019] As an improvement, the crescent-shaped core has a certain wall thickness, the thickest in the middle, and slightly thinner from the middle to the periphery. It requires strength and durability, and uses materials with the ability to restore the original shape after deformation.

[0020] As an improvement, the cross-section of the crescent-shaped core at the bend is S-shaped. The upper edge of the crescent-shaped core is outwardly flared.

[0021] As an improvement, the recessed groove is elongated and perpendicular to the center line of the crescent-shaped core. The recessed groove is composed of one or more grooves or a hole-like structure that penetrates the thickness of the flesh.

[0022] As an improvement, the recessed groove can be a groove with an arc-shaped cross-section, a right-angled groove, or a hole.

[0023] As an improvement, the bottom two sides of the crescent-shaped core extend a certain length towards the toe of the shoe. The length of the two sides of the crescent-shaped core gradually decreases towards the top of the crescent-shaped core, forming a slope from the top to the bottom.

[0024] The advantages of this invention compared to existing technologies are: it allows for quick and easy putting on and taking off shoes without the aid of hands, while also being aesthetically pleasing and highly practical. The overall design is indistinguishable from ordinary shoes in appearance, yet it enhances functionality, balancing practicality with aesthetics, resulting in shoes that achieve a high level of both functionality and visual appeal.

[0025] By constructing the shoe as described above, it allows for quick and easy putting on and taking off without using your hands. It is sturdy and durable, prevents heel deformation, avoids the unsightly appearance of an excessively exposed heel guide, and provides a comfortable fit. It also offers a shoe that can be put on standing up, without bending over or sitting, providing greater convenience. The crescent-shaped core is built into the heel, and the head of the crescent does not add extra height to the shoe's appearance or extend backward to guide the foot into the shoe, so it looks no different from a regular shoe. Therefore, it has a good appearance, does not restrict shoe design, is highly versatile, and practical. The resin-molded crescent core maintains a good feel and also protects the foot. With the back and lining fully covered with cushioning material, it provides excellent comfort. Attached Figure Description

[0026] Figure 1 is a schematic diagram of the structure of this invention.

[0027] Figure 2 is a schematic diagram of the crescent-shaped core structure of this invention.

[0028] Figure 3 is a side view of the structure of this invention.

[0029] Figure 4 is a schematic diagram of the cross-sectional structure of the present invention.

[0030] Figure 5 is a schematic diagram of the heel structure of the shoe according to the present invention.

[0031] Figure 6 is a schematic diagram of the crescent-shaped core structure of this invention patent 2.

[0032] Figure 7 is a schematic diagram of the crescent-shaped core structure of this invention patent 3.

[0033] Figure 8 is a schematic diagram of the moon-shaped core embodiment of the present invention.

[0034] Figure 9 is a schematic diagram of the crescent-shaped core mounting structure of this invention.

[0035] Figure 10 is a schematic diagram of the moon-shaped core in use according to the present invention.

[0036] Figure 11 is a diagram illustrating the steps of putting on shoes according to this invention.

[0037] As shown in the figure: 1. Sole, 2. Upper, 3. Opening, 4. Heel, 5. Upper, 6. Tongue, 7. Elastic laces, 8. Toe, 9. Crescent-shaped core, 10. Cutout, 11. Groove, 12. Sponge padding, 13. Slot, 14. Elastic band, 15. Upper material. Detailed Implementation

[0038] The present invention will now be described in further detail with reference to the accompanying drawings.

[0039] In specific implementations, this invention can be applied to ankle boots, sandals, and other shoes with the above-mentioned materials on the sole, heel, instep, and ankle.

[0040] The shoes have a heel or crescent-shaped back (Hongbao).

[0041] As a shoe component, the crescent-shaped core can be pre-molded using resins that combine hardness, elasticity, and toughness, such as TPR, TPU, and rubber, with a preferred hardness of 65 degrees or higher. Alternatively, it can be stamped from a material capable of being stamped. The crescent-shaped core has a certain wall thickness, being thickest in the center and gradually thinning outwards. It requires strength and durability, and after deformation, it uses a material with the ability to restore its original shape, so that it will not easily crack or be damaged even when stepped on.

[0042] The crescent-shaped core is embedded in the heel of the shoe, between the upper material, cushioning material, and back material. Although the crescent-shaped core itself is very hard, it is surrounded by soft cushioning material and the back material of the shoe.

[0043] The crescent-shaped core is positioned at the top of the heel and the edge of the shoe opening. The height of the heel does not exceed the height of the tongue in the direction of the shoe opening and toe. It looks like an ordinary shoe, extending upwards and backwards without much extension.

[0044] The crescent-shaped core is arc-shaped along the heel, with the apex of the arc within the width of the sole. In the side cross-section of the crescent-shaped core, it forms an S-shaped curve. The uppermost part protruding towards the heel slopes backward at no more than 15° relative to the vertical direction, and the edges are rolled outward. Moreover, the edges of the upper part of the crescent-shaped core are also slightly turned outward. The lower part of the crescent-shaped core has a certain length from the heel towards the toe. To avoid hitting the ankle bone located on the outside of the foot, the length of the crescent-shaped core gradually shortens from the lower part to the upper part, becoming a sloping surface from the shoe opening side to the sole side.

[0045] The more detailed shape of the crescent-shaped core is shown in the figure.

[0046] In the upper region of the crescent-shaped core, a longitudinal slit is provided at the center position in the left-right direction. The width of the slit is not particularly specified, as long as it is open. The slit extends from the upper edge to the junction of the upper and middle parts. This slit connects to a slender, elliptical or circular groove or hole located horizontally to the ground at the junction of the upper and middle parts on the outer side of the crescent-shaped core. The size of the ellipse or circle can be adjusted according to the strength requirements of the upper part of the crescent-shaped core. On both sides of this ellipse or circle, a long, thick groove or several thin grooves are provided in the horizontal direction. These grooves can be compressed and deformed like springs, and have the property of returning to their original position after the pressure is removed.

[0047] Alternatively, the slit structure can be set only on the upper part of the crescent-shaped core, with the slit opening ending at the junction of the upper and middle parts. At the front end of the slit, a long, thick groove or several thin grooves are set in the horizontal direction perpendicular to the longitudinal center line. The grooves do not penetrate the entire thickness of the core.

[0048] As shown below, there can be any pattern of form ① to ④, or any combination of the structures in ① to ④.

[0049] The cross-section of the groove is arc-shaped, acute-angled, or right-angled, which can both ensure deformation and utilize the properties of the resin to provide elasticity, ensuring that it can return to its original shape.

[0050] ① The front end of the slit is elliptical and connected to the slit section, and extends through the wall thickness. On the left and right horizontal sides of the ellipse, in the direction of the horizontal ground, a groove with a certain thickness is set. The length of the groove does not extend to the edge of the crescent core. The distance between the end of the groove and the edge of the crescent core is not less than one-eighth of the overall length of the horizontal section of the crescent core at this point.

[0051] ② The front end of the slit is circular, connected to the slit section and extending through the wall thickness. On the left and right horizontal sides of the circle, in the direction of the horizontal ground, a groove with a certain thickness is set. The length of the groove does not extend to the edge of the crescent core. The distance between the end of the groove and the edge of the crescent core is not less than one-eighth of the overall length of the horizontal section of the crescent core at this point.

[0052] ③ The slit ends at the junction of the upper and middle sections. At the front end of the slit, a horizontal, elongated groove is formed at the junction of the upper and middle sections. The groove wall is thinner than the main wall, but does not extend through the wall. The groove does not extend to the edge of the crescent-shaped core. The distance between the end of the groove and the edge of the crescent-shaped core is not less than one-eighth of the overall length of the horizontal cross-section of the crescent-shaped core at this location.

[0053] ④ The slit ends at the junction of the upper and middle sections. At the front end of the slit, several thin, horizontally oriented grooves are formed at the junction of the upper and middle sections. The wall thickness of each thin groove is thinner than that of the main body wall, but it does not penetrate the entire wall thickness. The length of the groove does not extend to the edge of the crescent-shaped core. The distance between the end of the groove and the edge of the crescent-shaped core is not less than one-eighth of the overall length of the horizontal cross-section of the crescent-shaped core at this location.

[0054] The slit section is designed so that when the foot steps on the upper part of the crescent-shaped core, the pressure from the foot causes the slit to naturally widen to the left and right. This increases the area of ​​the upper inner side of the crescent-shaped core that supports the foot, widening the shoe opening in the X direction. This facilitates a smoother slide into the shoe, allowing for quick and easy shoe-wearing without using your hands. After the foot is inside the shoe, the elasticity of the resin causes the slit to return to its original position. The oval and rounded designs at the front of the slit also contribute to its ability to quickly return to its original position after opening.

[0055] The structure of the one thicker groove or several thinner grooves here is designed so that when the foot applies weight to the upper part of the crescent-shaped core while wearing the shoe, the groove is temporarily compressed like a spring. The upper part of the crescent-shaped core naturally tilts to the back of the heel, increasing the angle relative to the vertical line of the ground from 15° to 30-45°. With the help of the elastic band on the side of the shoe opening or the rubber cord of the shoe, the shoe opening expands in the Y direction. At the same time, part of the pressure acting on the upper part of the crescent-shaped core is transmitted to the crescent-shaped core in the toe direction through the structure that retains the wall thickness between the end of the transverse groove and the edge of the crescent-shaped core, causing the inner and outer parts of the crescent-shaped core in the toe direction to expand outward. Due to the expansion of the two sides of the crescent-shaped core in the toe direction in the X direction, the shoe opening also expands in the X direction, making it easier for the foot to be inserted, allowing for quick and easy shoe-wearing without the aid of hands. After the foot is in the shoe, the groove returns to its original position due to the elasticity of the resin.

[0056] Because the slit section and the crescent-shaped core are integrated into the upper of the heel, the crescent-shaped core's lateral opening is limited by the surrounding material and cannot expand indefinitely under pressure. Even when the front of the crescent-shaped core expands, the lower part remains firmly bonded to the sole. The minor, repetitive deformations and recovery that occur when putting on and taking off the shoes are completed very quickly and do not negatively affect the original function of the heel.

[0057] Cushioning material is placed on the back of the crescent-shaped core and in the middle of the space between the upper and lower parts of the crescent-shaped core, according to the position of the Achilles tendon. This can improve the fit of the shoe and the wearer's experience. The cushioning material uses EVA sponge, rubber sponge, latex foam, etc.

[0058] Although the crescent-shaped core itself has rigidity as the heel shaping core material, the foot does not feel particularly hard because there are cushioning materials on both the inner and outer sides.

[0059] The upper slit of the crescent core opens and recovers, the horizontal groove structure on the back of the crescent core is compressed and recovers, and by setting cushioning materials on the outside of the crescent core as a whole, the force response and impact of the foot stepping on the crescent core when the wearer puts on the shoe can be effectively mitigated, eliminating the discomfort caused by the hard crescent core installed on the heel of the previous shoes. The wearing feeling of the shoe can also be greatly improved and made more comfortable, and the shoes can be put on quickly without the aid of hands.

[0060] The slits or grooves set in the upper part of the crescent-shaped core open when shoes are repeatedly put on and taken off, returning to their original shape or compressing, and the cycle of returning to the original shape is repeated.

[0061] The movable part is within a certain range, and it is only the upper part of the crescent-shaped core. It can fully play the original function of the shoe heel shaper, which is more convenient and comfortable to wear than previous shoes. The structure of the crescent-shaped core will not have any negative functional impact on the shoe.

[0062] The crescent-shaped core has multiple slits on its lower edge, which allows it to fit the shape of the heel of the shoe last during shoe molding, thus reducing resistance during the shoe molding process.

[0063] The crescent-shaped core is embedded between the shoe's outer material, lining material, and cushioning. It is integrally connected and fixed to the shoe material along the shape and width of the heel area of ​​the sole, and along the inner edge of the sole. The height of the inner bonding surface edge of the sole varies depending on the shoe type. The structure of the lower edge of the crescent-shaped core needs to be adjusted according to the height of the sole edge used. If the depth of the sidewalls around the sole bonding surface is greater than 8mm, the lower edge of the crescent-shaped core can remain unchanged, ensuring sufficient bonding and fixation strength between the sole, crescent-shaped core, and upper. However, when the sole edge is shallow and the bonding surface is flat, the bonding area between the crescent-shaped core and the sole is small, resulting in insufficient strength. Therefore, several structural scaffolding members that can bend inwards towards the crescent-shaped core and bond with the sole surface are needed at the lower edge of the crescent-shaped core to enhance the bonding area and strength, as shown in the diagram.

[0064] The working principle of this invention: Quickly putting on shoes requires 3 steps: placing the foot on the upper part of the heel of the shoe and stepping on the upper part of the crescent-shaped core.

[0065] As the heel applies weight to the crescent-shaped core, the core opens and compresses as described above. Simultaneously, the elastic band or drawstring at the shoe opening causes changes in the opening, guiding the foot quickly into the shoe. This entire sequence of actions is completed in an instant, allowing for rapid shoe insertion without the aid of hands. Once inside, the crescent-shaped core returns to its original position determined by the resin's properties, without impairing the shoe's intended function.

[0066] The above structure achieves the following effects: When putting on shoes, the wearer does not need to bend over; by squatting and using their hands, they can easily put on the shoes without the aid of their hands. The shoes maintain support while making them easier and quicker to put on and take off. When taking off shoes, simply place the toe of one foot on or against the heel of the other shoe to secure it, then lift the foot to easily remove it.

[0067] Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention. Those skilled in the art can make changes, modifications, substitutions and variations to the above embodiments within the scope of the present invention without departing from the principles and spirit of the present invention.

Claims

1. A shoe capable of being quickly put on and taken off, and a crescent-shaped core embedded in the heel of the shoe, including a sole (1), characterized in that: The sole (1) is fitted with a shoe upper (2), the top of the shoe upper (2) is provided with a shoe opening (3), the end of the shoe upper (2) is provided with a shoe heel (4), the end of the shoe upper (2) away from the shoe heel (4) is provided with a shoe upper (5), the top of the shoe upper (5) is provided with a shoe tongue (6), the top of the shoe tongue (6) is tied with an elastic shoelace (7), and the end of the shoe upper (5) away from the shoe upper (2) is provided with a shoe toe (8). The crescent-shaped core (9) is located on the inside of the heel (4). The crescent-shaped core (9) is U-shaped. The upper part of the crescent-shaped core (9) extends to the top of the back of the shoe opening (3). The bottom of the crescent-shaped core (9) has a cut (10). The top of the outer side of the crescent-shaped core (9) has a recessed groove (11). The inner side has a sponge pad (12). The recessed groove (11) to the top of the crescent-shaped core (9) has a slot (13).

2. The shoe capable of being quickly put on and taken off, and the crescent-shaped core embedded in the heel of the shoe, as described in claim 1, is characterized in that: Elastic laces (7) or no laces but with elastic bands (14) connecting the sides of the shoe opening and the tongue.

3. The shoe capable of being quickly put on and taken off, and the crescent-shaped core embedded in the heel of the shoe, as described in claim 1, is characterized in that: The crescent-shaped core (9) is covered with the upper material (15) and has a sponge (12) and shoe lining material inside.

4. The shoe capable of being quickly put on and taken off, and the crescent-shaped core embedded in the heel of the shoe, as described in claim 1, is characterized in that: The crescent-shaped core (9) has a certain wall thickness, with the thickest part in the middle and a slight thinning from the middle to the periphery. It requires strength and durability, and uses materials with the ability to restore the original shape after deformation.

5. The shoe capable of being quickly put on and taken off, and the crescent-shaped core embedded in the heel of the shoe, as described in claim 1, is characterized in that: The cross-section of the crescent-shaped core (9) at the bend is S-shaped.

6. The shoe capable of being quickly put on and taken off, and the crescent-shaped core embedded in the heel of the shoe, as described in claim 1, is characterized in that: The recessed groove (11) is elongated and perpendicular to the center line of the crescent-shaped core (9). The recessed groove (11) is composed of one or more grooves or is a hole-like structure that penetrates the flesh.

7. The shoe capable of being quickly put on and taken off, and the crescent-shaped core embedded in the heel of the shoe, as described in claim 1, is characterized in that: The recessed groove (11) is a groove or right-angled groove with an arc-shaped cross-section or a hole.

8. The shoe capable of being quickly put on and taken off, and the crescent-shaped core embedded in the heel of the shoe, as described in claim 1, is characterized in that: The bottom two sides of the crescent-shaped core (9) extend a certain length towards the toe of the shoe. The length of the two sides of the crescent-shaped core (9) gradually decreases towards the top of the crescent-shaped core (9), forming a slope from the top to the bottom.

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