Toe separating shoe

Abstract

The utility model discloses a toe separating shoe which comprises a toe part, a sole part, an arch part and a heel part which are sequentially arranged from front to back, the toe part comprises a transverse part, the transverse part defines at least two cavities which are mutually independent in the transverse direction so as to provide isolation between adjacent toes, and the rear portions of the at least two cavities are communicated; the transverse part comprises a hollow area, and the hollow area provides a space for the toes to deform due to transverse extrusion. The toe pad at least has the beneficial effects that when the transverse part is transversely extruded by toes, the hollow area of the transverse part can collapse inwards to provide enough activity space for the toes, so that the comfort is improved, the fatigue is obviously reduced, and the injury is avoided; due to the toe separation design, the air permeability among the toes is improved, the toes (compared with toes which are not separated) are expanded more outwards, and the stability during walking or running is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of shoes, in particular to a pair of split-toe shoes. Background Art

[0002] Shoes, depending on whether or not they have a lateral barrier between the toes, include non-split-toe shoes and split-toe shoes (e.g., split-toe shoes that block all five toes, or flip-flops that only separate the big toe). Split-toe shoes are widely used because they separate at least one toe from the adjacent toes, improving breathability between the toes while also allowing the toes to expand further outward, enhancing stability when walking or running.

[0003] In the application of split-toe shoes, such as WO2009116818A1 and CN303686975S, the toes are separated by a solid part. During walking (or running) and other exercises, the toes need to move, which inevitably causes lateral compression (horizontally of the toes toward the adjacent solid part or the toe direction). This compression is blocked by the solid part, resulting in a large lateral compression of the toes, causing discomfort, fatigue, and even injury.

[0004] Therefore, in order to solve the problem that the toes are compressed laterally after being separated, which affects comfort, causes fatigue and even damage, the present invention provides a split-toe shoe. Summary of the Invention

[0005] The embodiment of the present invention provides a split-toe shoe, in which the hollow area of ​​the lateral part can collapse inward when the toes are laterally squeezed to provide a larger space for the toes to move, thereby improving comfort, significantly reducing fatigue, and avoiding injuries.

[0006] The present invention provides a split-toe shoe, which includes a toe portion, a sole portion, an arch portion, and a heel portion arranged in sequence from front to back, wherein:

[0007] The toe portion includes a transverse portion, the transverse portion defining at least two laterally independent chambers to provide isolation between adjacent toes, and the rear sides of the at least two chambers are connected;

[0008] The lateral portion includes a hollow area, and the hollow area provides a space for the toes to be compressed and deformed laterally.

[0009] Furthermore, the hollow area is constructed in one or a combination of the following ways:

[0010] The hollow portion of the elastomer with the hollow lattice structure forms the hollow area;

[0011] An elastic member having a deformable structure in the transverse direction is located in the hollow area.

[0012] Furthermore, the toe portion further includes a front end portion, wherein:

[0013] The front ends of the at least two chambers are at least partially covered by the front end portion.

[0014] Furthermore, the front end portion is made of an elastomer with a hollow lattice structure, and the hollow portion of the elastomer constituting the front end portion provides space for the toes to be squeezed forward and deformed.

[0015] Furthermore, the toe portion further includes an upper end portion, wherein:

[0016] The upper ends of the at least two chambers are at least partially covered by the upper end portion.

[0017] Furthermore, the upper end portion is made of an elastomer with a hollow lattice structure, and the hollow portion of the elastomer constituting the upper end portion provides space for the toes to be squeezed upward and deformed.

[0018] Furthermore, the number of the chambers is five, and they correspond one-to-one to the positions and shapes of the five toes and / or,

[0019] The toe portion, the sole portion, the arch portion and the heel portion form a continuous and smooth transition with the surface of the foot.

[0020] Furthermore, the toe portion, the sole portion, the arch portion and the heel portion are integrally formed from an elastomer with a hollow lattice structure through 3D printing.

[0021] Furthermore, the height of the upper surface of the sole of the sole portion is equal to the height of the upper surface of the sole of the heel portion.

[0022] Furthermore, the height of the shoe upper at the heel portion is ≥0.

[0023] The beneficial effects of the embodiments of the present invention include at least:

[0024] 1. When the lateral part is squeezed by the toes, the hollow area can collapse inward to provide sufficient space for the toes to move, improve comfort, significantly reduce fatigue and avoid injury;

[0025] 2. The split toe design improves the breathability between the toes, and the toes (compared to non-split toes) are more spread out, increasing stability when walking or running. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following briefly introduces the drawings required for use in the description of the embodiments of the present invention. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative labor.

[0027] Figure 1 A top view (i.e., a view from above) of an embodiment of a split-toe shoe;

[0028] Figure 2 A side view of an embodiment of a split-toe shoe, wherein the split-toe shoe is placed on a horizontal surface when not being worn;

[0029] Figure 3 for Figure 2 Cross-sectional view of the middle section AA;

[0030] Figure 4 It is a schematic diagram of the three-dimensional structure of an embodiment of a split-toe shoe.

[0031] In the picture:

[0032] 1. Toe portion; 11. Transverse portion; 111. Hollow area; 12. Front portion; 121. Hollow portion of the elastic body constituting the front portion; 13. Upper portion; 131. Hollow portion of the elastic body constituting the upper portion; 14. Chamber;

[0033] 2. The sole of the foot; 21. The sole of the foot;

[0034] 3. Arch of the foot;

[0035] 4. Heel; 41. The sole of the heel. DETAILED DESCRIPTION

[0036] In order to make the technical problems, technical solutions and beneficial effects solved by the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention.

[0037] In the description of the present invention, it should be understood that the terms "longitudinal", "radial", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings and are intended only to facilitate the description of the present invention and simplify the description. They do not indicate or imply that the devices or elements referred to must have a specific orientation, be constructed and operate in a specific orientation, and therefore should not be understood as limiting the present invention. In the description of the present invention, unless otherwise specified, "plurality" means two or more.

[0038] In the description of the present invention, it should be noted that, unless otherwise expressly specified or limited, the terms "mounted," "connected," and "connected" should be understood in a broad sense. For example, they may refer to fixed, detachable, or integral connections; mechanical or electrical connections; direct or indirect connections through an intermediate medium; and internal communication between two components. Those skilled in the art will understand the specific meanings of the above terms in the present invention based on the specific circumstances.

[0039] The utility model embodiment discloses a pair of split-toe shoes, see Figures 1 to 4 , which includes a toe portion 1 ( Figure 1 The left side of the dotted line L1, that is, the part in front of the dotted line L1), the sole 2 ( Figure 1 The part between the dotted lines L1 and L2), the arch 3 ( Figure 1 The portion between the middle dotted lines L2 and L3) and the heel portion 4 ( Figure 1 The portion to the right of the middle dashed line L3 (i.e., the portion located behind dashed line L3) corresponds to the toes, sole, arch, and heel of the foot, respectively. Of course, due to individual foot shapes, the specific design of a split-toe shoe is not necessarily based on the shapes defined by the dashed lines L1, L2, L3, and L4 shown in the figure. These are merely representations of the front-to-back positional relationship (the direction corresponding to the toes is front, and the direction corresponding to the heel is back).

[0040] The toe portion 1 includes a transverse portion 11, which defines at least two laterally independent chambers 14 to provide separation between adjacent toes. At least two of the chambers 14 are interconnected at their rear ends. The split-toe design improves breathability between the toes and allows the toes to be more spread out (compared to unsplit toes), enhancing stability during walking or running. This design even accommodates varying toe widths (e.g., individuals with varying toe widths, individuals wearing the same shoe during developmental stages, and individuals whose toe widths slightly increase during activities such as running).

[0041] The number of chambers 14 can be two, three, four or five. Figure 1 、 Figure 3 and Figure 4 The case where there are five chambers 14 is shown. When there are five chambers 14 , the positions and shapes of the five toes correspond one to one.

[0042] Transverse portion 11 includes a hollow area 111, which provides space for the toes to deform due to lateral compression. When subjected to lateral compression, hollow area 111 collapses inward, providing ample room for the toes to move, improving comfort, significantly reducing fatigue, and preventing injury. Those skilled in the art will appreciate that the force that triggers the collapse of hollow area 111 can be adjusted by adjusting the support force of transverse portion 11.

[0043] Regarding the hollow area 111, it is constructed in one or a combination of the following ways:

[0044] The hollow portion of the elastomer with the hollow lattice structure forms a hollow area 111. As shown in the figure, elastic deformation is provided by the solid portion of the elastomer, and the hollow area 111 is provided by the hollow portion of the elastomer;

[0045] Elastic members (such as springs and air bags) with a deformable structure in the transverse direction are located in the hollow area 111 , elastic deformation is achieved by the elastic members, and the hollow area 111 is provided by the gaps between the elastic members.

[0046] The toe portion 1 embodiment may further include a front portion 12, wherein the front ends of at least two chambers 14 are at least partially covered by the front portion 12. That is, the front ends of the chambers 14 may be arranged in a manner such that: Figures 1 to 4 The method shown is full coverage, but partial coverage is also possible (not shown). Full coverage provides better protection for the front of the toes. Partial coverage allows for better air circulation and avoids constriction of the toes from the front.

[0047] The front end portion 12 of the toe portion 1 embodiment can be made of an elastomer with a hollow lattice structure. The hollow portion 121 of the elastomer constituting the front end portion provides space for the toes to be squeezed forward and deformed, thereby providing a larger deformation amount (compared to a single-layer solid structure, even a foam material such as polyurethane), greatly improving wearing comfort, reducing fatigue, and avoiding foot injuries. The design can even be used in scenarios where foot lengths change (such as when worn by people with different foot lengths, when worn by the same person during the developmental period, and when the foot length slightly increases during exercises such as running).

[0048] The toe portion 1 embodiment may further include an upper portion 13, wherein the upper ends of at least two chambers 14 are at least partially covered by the upper portion 13. The upper ends of the chambers 14 may be completely covered, such as Figures 1 to 4The toe can be partially covered, which is not shown. Full coverage provides better protection for the front of the toes. Partial coverage allows for better airflow and avoids constriction of the toes from above.

[0049] Similar to the design of the front portion 12, the upper portion 13 can also be made of an elastomer with a hollow lattice structure. The hollow portion 131 of the elastomer forming the upper portion provides space for the toes to deform upwards. This allows for greater deformation in the height direction (compared to single-layer solid structures, even those made of foam materials such as polyurethane), significantly improving wearing comfort, reducing fatigue, and preventing foot injuries. This design is even suitable for use in situations where foot heights vary (e.g., for individuals of varying foot heights, for individuals wearing the same shoe during developmental stages, and for activities such as running where foot height may slightly decrease).

[0050] The transverse portion 11, the front end portion 12, and the upper end portion 13 can be hollowed out as an elastic body with a lattice structure. Figures 1 to 4 The paper discloses a hollow lattice structure (composed of a double-layer mesh and supporting columns connecting the two layers. The hollowed-out portions of the double-layer mesh are uniformly shaped and arranged in opposite directions, but the edges may be triangular, pentagonal, or other shapes). Alternatively, the elastomer may include the 3D-printed shock-absorbing component disclosed in CN218971713U, the rebound element disclosed in CN219182950U, the cushioning and shock-absorbing component disclosed in CN212414939U, or the pressure-resistant and breathable cushioning component disclosed in CN212737077U. The hollowed-out lattice structure, created using 3D printing technology, not only has a futuristic appearance but is also extremely lightweight, weighing only 90-100 grams in size 41 and remaining soft and flexible. The flexible sole design folds in half for easy carrying and storage. Furthermore, the shoe's silent design significantly reduces noise during walking, providing a quiet and comfortable experience both indoors and outdoors. This shoe combines the barefoot concept, loose comfort, toe-fitting design and modern technology, providing users with a new wearing experience that is light, natural and convenient.

[0051] The toe portion 1, sole portion 2, arch portion 3, and heel portion 4 are integrally formed from an elastomer with a hollow lattice structure via 3D printing. 3D printing, in particular, allows for different designs for different parts, such as varying the sparseness or thickness of the solid portion of the lattice, thereby allowing for easy adjustment of the lattice's elasticity. The hollow portions of the lattice can also be flexibly designed, for example, with different elastic moduli for different parts (e.g., if the sole is subjected to continuous high pedaling pressure, while the upper is subjected to low lateral compression, the elastic modulus of the sole is designed to be much greater than that of the upper). This allows for appropriate adjustment of deformation according to actual needs, such as providing different deformation amounts for different parts (e.g., the width of the upper on both sides of the arch is essentially constant, providing relatively small deformation amounts, while the toe portion 1 is required to provide relatively large deformation amounts). Of course, those skilled in the art will appreciate that the edges of the toe portion 1, sole portion 2, arch portion 3, and heel portion 4 should all be hemmed (to avoid hollowing out at the edge, causing discomfort or easy tearing).

[0052] In addition, the toe portion 1, the sole portion 2, the arch portion 3 and the heel portion 4 form a continuous and smooth transition with the surface of the foot, so that the shoe can be worn barefoot (without socks or insoles).

[0053] It should also be noted that the upper surface height of the sole 21 (lowest point) of the sole portion ( Figure 2 Dimension H1) = height of the upper surface of the sole 41 at the heel ( Figure 2 (Size H2 in the middle). With this setting, there's no front-to-back drop (strictly speaking, considering design and manufacturing errors, and the user's standing and walking postures when wearing the shoe, the drop is ≈ 0), allowing the foot to stretch naturally, helping the foot muscles and bones maintain a healthy physiological posture.

[0054] Finally, it should be noted that the height of the shoe upper at the heel portion can be equal to 0 or greater than 0. When equal to 0, that is, the heel portion 4 has no shoe upper and is used as a slipper (e.g. Figures 1 to 4 As shown, although the height of the heel edge is slightly higher than the center position, its function is only to adapt to the shape of the heel and does not mean that the raised portion is used as a shoe upper. In other words, it does not serve as a shoe upper at the heel to limit the back of the foot. Of course, those skilled in the art will know that the gradual transition of the shoe upper at the arch 3 needs to be considered. When it is greater than 0, it is used as a non-slipper.

[0055] The embodiments described above are only used to illustrate the technical solutions of the present invention, rather than to limit the same. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. These modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the various embodiments of the present invention, and should all be included in the scope of protection of the present invention.

Claims

1. A split-toe shoe, characterized in that: The foot comprises a toe portion, a sole portion, an arch portion and a heel portion arranged in sequence from front to back, wherein: The toe portion includes a transverse portion, the transverse portion defining at least two laterally independent chambers to provide isolation between adjacent toes, and the rear sides of the at least two chambers are connected; The lateral portion includes a hollow area, and the hollow area provides a space for the toes to be compressed and deformed laterally.

2. The split-toe shoe according to claim 1, wherein: The hollow area is constructed in one or a combination of the following ways: The hollow portion of the elastomer with the hollow lattice structure forms the hollow area; An elastic member having a deformable structure in the transverse direction is located in the hollow area.

3. The split-toe shoe according to claim 1, wherein: The toe portion also includes a front end portion, wherein: The front ends of the at least two chambers are at least partially covered by the front end portion.

4. The split-toe shoe according to claim 3, characterized in that: The front end portion is made of an elastic body with a hollow lattice structure, and the hollow portion of the elastic body constituting the front end portion provides space for the toes to be squeezed forward and deformed.

5. The split-toe shoe according to claim 1, wherein: The toe portion further includes an upper portion, wherein: The upper ends of the at least two chambers are at least partially covered by the upper end portion.

6. The split-toe shoe according to claim 5, characterized in that: The upper end portion is made of an elastic body with a hollow lattice structure, and the hollow portion of the elastic body constituting the upper end portion provides space for the toes to be squeezed upward and deformed.

7. The split-toe shoe according to any one of claims 1 to 6, characterized in that: There are five chambers in number, and they correspond one to one with the positions and shapes of the five toes.

8. The split-toe shoe according to claim 7, characterized in that: The toe portion, the sole portion, the arch portion and the heel portion are integrally formed from an elastomer with a hollow lattice structure through 3D printing; and / or, The toe portion, the sole portion, the arch portion and the heel portion form a continuous and smooth transition with the surface of the foot.

9. The split-toe shoe according to claim 7, characterized in that: The height of the upper surface of the sole of the sole portion is equal to the height of the upper surface of the sole of the heel portion.

10. The split-toe shoe according to claim 7, characterized in that: The shoe upper height of the heel portion is ≥0.

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