Lining-free shoe

Abstract

The utility model relates to a lining-free shoe, which relates to the technical field of shoe design and comprises a vamp and a sole. One side of the sole is fixedly connected with an outer wrapping edge, the outer wrapping edge surrounds the outer edge of the sole to form a first groove for containing the vamp, one side of the vamp is located in the first groove, the vamp is made of a wool felt and hot melting type reinforced fiber composite material, and under the heating condition, one side of the vamp is bonded and fixed to the groove wall of the first groove of the sole. The wool felt material has the advantages that the fixing strength is effectively improved, and the flexibility and comfort of the wool felt material are kept.

Description

Technical Field

[0001] This application relates to the field of footwear design technology, and in particular to a linerless shoe design. Background Technology

[0002] With increasing environmental awareness, market demand for sustainable materials and unlined footwear is gradually rising. Unlined shoes typically refer to shoes without any additional lining material covering the inside of the shoe cavity. This design reduces the overall weight of the shoe, improves wearer comfort, and reduces unnecessary material waste during manufacturing. Furthermore, the design of unlined shoes better showcases the texture and craftsmanship of the shoe materials themselves, aligning with modern consumers' pursuit of a simple and natural lifestyle.

[0003] Under the relevant technology, in the existing footwear industry, in order to achieve the functionality and aesthetics of unlined shoes, wool felt materials are usually used for traditional sewing or bonding processes, but the following problems exist: (1) Sewing fixation: the durability and waterproof performance of the sewing line are weak; (2) Bonding fixation: the adhesive affects breathability and comfort, and may also delaminate.

[0004] Regarding the aforementioned technologies, although wool felt, as a shoe upper material, possesses strong flexibility and elasticity, it lacks special design for high-strength connections and fixation. Therefore, how to effectively improve fixation strength while preserving the flexibility and comfort of wool felt material has become an urgent problem to be solved. Utility Model Content

[0005] In order to effectively improve the fixing strength while retaining the flexibility and comfort of wool felt material, this application provides a liningless shoe type.

[0006] This application provides a linerless shoe design, which adopts the following technical solution:

[0007] A type of unlined shoe, comprising an upper and a sole;

[0008] An outer edge is fixedly connected to one side of the sole. The outer edge surrounds the outer edge of the sole to form a first groove for accommodating the upper. One side of the upper is located in the first groove. The upper is made of a composite material of wool felt and hot-melt reinforcing fiber. Under heating conditions, one side of the upper is bonded and fixed to the groove wall of the first groove of the sole.

[0009] By adopting the above technical solution, and by setting up an upper containing heat-melting reinforcing fibers, when the upper is located within the first groove, the heat-melting reinforcing fibers in the wool felt are activated by heating, causing them to fill and solidify within the first groove, forming a high-strength connection between the upper and the sole. Furthermore, the introduction of the heat-melting reinforcing fibers significantly improves the overall durability and waterproof performance of the upper. This design allows the unlined shoe to maintain lightweight and breathability while further enhancing structural stability, ensuring a good wearing experience in various environments.

[0010] Optionally, the shoe surface is provided with a protrusion, and the outer edge is provided with a first through hole for the protrusion to pass through.

[0011] By adopting the above technical solution, in order to further improve the stability of the connection between the upper and the sole, a protrusion is provided on the upper, and the protrusion is connected and cooperates with the first through hole on the outer edge, thereby realizing the connection between the upper and the sole.

[0012] Optionally, multiple protrusions are provided, and the protrusions are provided on both sides of the outer edge.

[0013] By adopting the above technical solution and setting multiple protrusions, the stability of the connection between the upper and the sole is further improved.

[0014] Optionally, the protrusion is made of wool felt.

[0015] By adopting the above technical solution and setting the protrusions to wool felt material, not only is the consistency between the protruding part and the upper material guaranteed, but the overall flexibility and comfort are also improved while increasing the contact area.

[0016] Optionally, the outer diameter of the protrusion is larger than the diameter of the first through hole, and the protrusion abuts against the outer edge after passing through the first through hole.

[0017] By adopting the above technical solution, in order to connect the protrusion with the outer edge, the outer diameter of the protrusion is larger than the diameter of the first through hole. The protrusion is made of wool felt material with a certain degree of softness. The protrusion can further deform and pass smoothly through the first through hole. After passing through the first through hole, the protrusion returns to its initial shape and can abut against the outside of the outer edge. This ensures a tight fit between the protrusion and the outer edge and enhances the stability of the structure.

[0018] Optionally, one side of the shoe upper is provided with multiple raised strips, and the first groove wall is provided with multiple second grooves to accommodate the raised strips.

[0019] By adopting the above technical solution and incorporating multiple raised strips, the connection between the upper and the sole is further optimized. These raised strips can be inserted into the second groove, creating multiple point-like contact areas between the upper and sole, increasing the contact area and improving the overall torsional resistance of the shoe. Simultaneously, the raised strips also cushion the impact during walking, thus protecting the wearer's foot health.

[0020] Optionally, the sole includes an inner sole and an outer sole, wherein the outer sole is made of rubber and the inner sole is made of polyurethane.

[0021] By adopting the above technical solution, to further improve the support of the sole, the sole includes a rubber outsole and a polyurethane inner outsole, giving the shoe both excellent wear resistance and slip resistance, while maintaining lightness and elasticity. The polyurethane material of the inner outsole provides cushioning while effectively absorbing the impact of walking, while the rubber outsole ensures the stability and grip of the shoe on different surfaces. The combination of the two provides the wearer with an excellent walking experience.

[0022] Optionally, it also includes a buckle, one end of which is connected to one side of the outer edge and the other end of which is connected to the other side of the outer edge, and the buckle is made of elastic material.

[0023] By adopting the above technical solution and setting buckles, the wearer can easily adjust the tightness of the wrap to adapt to different foot shapes.

[0024] Optionally, each end of the buckle has a second through hole for the protrusion to pass through. The outer diameter of the protrusion is larger than the diameter of the second through hole. One end of the buckle is connected to one of the protrusions on one side of the outer edge, and the other end is connected to one of the protrusions on the other side of the outer edge. After passing through the second through hole, the protrusion abuts against the side wall of the buckle.

[0025] By adopting the above technical solution, a second through hole is provided on the buckle, allowing the protrusion to pass through and abut against the side wall of the buckle. Through the connection between the buckle and the outer edge, a tight fit is achieved. The use of elastic material for the buckle allows the wearer to adjust the tightness according to individual needs, making the shoe fit the foot better and improving wearing comfort and a snug fit. Furthermore, the elastic material ensures the durability of the buckle during stretching and loosening, extending the lifespan of the shoe.

[0026] In summary, this application includes at least one of the following beneficial technical effects:

[0027] 1. This application sets the shoe upper to be made of wool felt material with a certain proportion of hot-melt reinforcing fibers added. The hot-melt reinforcing fibers in the wool felt are activated by heating, so that they fill and solidify in the first groove, forming a high-strength connection between the shoe upper and the sole.

[0028] 2. This application further improves the stability of the connection between the sole and the upper by setting a convex strip and a second groove for connection and cooperation;

[0029] 3. This application improves the fit and comfort of the shoe upper around the foot by incorporating buckles. Attached Figure Description

[0030] Figure 1 This is a structural diagram of the shoe upper and sole of this application;

[0031] Figure 2 This is an exploded view of the shoe upper and sole of this application;

[0032] Figure 3 This is a structural diagram of the sole of the shoe in this application;

[0033] Figure 4 This is a schematic diagram of the overall structure of the unlined shoe model of this application;

[0034] Explanation of reference numerals in the attached drawings: 1. Upper; 11. Raised surface; 12. Raised stripe; 2. Sole; 21. Inner sole; 22. Outer sole; 3. Outer edging; 31. First groove; 32. First through hole; 33. Second groove; 4. Buckle strap; 41. Second through hole. Detailed Implementation

[0035] The following is in conjunction with the appendix Figure 1-4 This application will be described in further detail.

[0036] This application discloses an unlined shoe design. (Refer to...) Figure 1 and Figure 2 The unlined shoe type includes an upper 1 and a sole 2; an outer edge 3 is fixedly connected to one side of the sole 2, and the outer edge 3 surrounds the outer edge of the sole 2 to form a first groove 31 for accommodating the upper 1. One side of the upper 1 is located in the first groove 31. The upper 1 is a composite material of wool felt and hot-melt reinforcing fiber. Under heating conditions, one side of the upper 1 is bonded and fixed to the groove wall of the first groove 31 of the sole 2; the upper 1 is a wool felt material with a certain proportion of hot-melt reinforcing fiber (such as PET / PE composite fiber) added. By heating (150-180°C), the hot-melt reinforcing fiber in the wool felt is activated, so that it fills and solidifies in the first groove 31, forming a high-strength connection between the upper 1 and the sole 2.

[0037] Reference Figure 1 The wool felt material on the upper is 1.5-4mm thick to ensure sufficient support and comfort.

[0038] Reference Figure 2The sole 2 and the outer edge 3 are integrally formed. In the central area of ​​the sole 2 where the weight is greatest, high-density needle punching (density 100 needles / cm², depth 8-10 mm) is used to fix the wool felt.

[0039] Reference Figure 1 The shoe design eliminates the traditional lining structure, employing an innovative combination of shearling and felt to maintain the comfort and support of the upper while ensuring the shoe is lightweight and soft. The toe design features an upward-extending, curved design that provides extra toe space, preventing discomfort from an overly tight lining and offering some protection. The felt material at the shoe opening is overlocked to avoid friction issues caused by the rigid lining in traditional designs, improving opening strength and wearing comfort. The heel is moderately reinforced by an upward extension of the outsole, replacing the traditional heel lining and ensuring stability during exercise.

[0040] Reference Figure 2 To further improve the stability of the connection between the upper 1 and the sole 2, the upper 1 is provided with a protrusion 11, and the outer edge 3 is provided with a first through hole 32 for the protrusion 11 to pass through. In some embodiments, there may be one or more protrusions 11. In order to further enhance the connection stability, in this embodiment, there are multiple protrusions 11, and the protrusions 11 are in the shape of a disc. Specifically, there are two protrusions 11 on each side of the outer edge 3. Through the cooperation of the protrusions 11 and the first through hole 32, it is ensured that the upper 1 and the sole 2 do not shift during movement.

[0041] Reference Figure 2 In order to facilitate the connection between the protrusion 11 and the first through hole 32, in this embodiment, the protrusion 11 is made of wool felt, and the outer diameter of the protrusion 11 is larger than the diameter of the first through hole 32. After passing through the first through hole 32, the protrusion 11 abuts against the outer edge 3. Since the protrusion 11 is made of flexible wool felt, the protrusion 11 can undergo a certain degree of deformation in the first through hole 32. After passing through the first through hole 32, the protrusion 11 further abuts against the outside of the outer edge 3, forming a firm locking effect.

[0042] Reference Figure 2 To ensure a more secure connection between the sole 2 and the upper 1, multiple raised strips 12 are provided on one side of the upper 1, and multiple second grooves 33 are provided on the wall of the first groove 31 to accommodate the raised strips 12. In this embodiment, four raised strips 12 are provided: one at the base and one at the toe of the upper 1, and one on each side of the upper 1, evenly distributed on one side of the upper 1, precisely matching the second grooves 33 to ensure that the raised strips 12 do not loosen or shift during the connection between the sole 2 and the upper 1. This design not only improves wearing comfort but also enhances the overall structural stability of the shoe, allowing it to maintain excellent performance over extended use.

[0043] Reference Figure 3 To further enhance the support of the sole 2, the sole 2 includes an inner sole 21 and an outer sole 22. The outer sole 22 is made of rubber, and the inner sole 21 is made of polyurethane. The hardness of the inner sole 21 is 50-60° Shore A, and the hardness of the outer sole 22 is 60-70° Shore A, providing a balanced comfort and abrasion resistance. The total thickness of the inner sole 21 and the outer sole 22 is 8mm-15mm, enhancing the comfort and support of the sole 2. Since both felt and rubber have a certain degree of elasticity, this structure can provide high tensile and tear strength while maintaining the lightweight, comfort, and flexibility of the sole 2.

[0044] Reference Figure 4 To improve the fit and comfort of the shoe upper 1, the unlined shoe design also includes a buckle 4. The buckle 4 is located on the upper 1, with one end connected to one side of the outer edge 3 and the other end connected to the other side of the outer edge 3. This allows the buckle 4 to adapt to different foot sizes, ensuring a close fit between the upper 1 and the foot while maintaining airflow and providing good breathability. In some designs, the buckle 4 also incorporates elastic materials to increase its durability and comfort. Overall, the unlined shoe design achieves a stable yet comfortable wearing experience through these carefully designed structural and material combinations.

[0045] Reference Figure 4 In order to connect and fix the buckle 4 to the outer edge 3, a second through hole 41 is opened at each end of the buckle 4 for the protrusion 11 to pass through. The outer diameter of the protrusion 11 is larger than the diameter of the second through hole 41. One end of the buckle 4 is connected to a protrusion 11 on one side of the outer edge 3, and the other end is connected to a protrusion 11 on the other side of the outer edge 3. After the protrusion 11 passes through the second through hole 41, it abuts against the side wall of the buckle 4. In use, after the protrusion 11 passes through the first through hole 32, the protrusion 11 is passed through the second through hole 41 of the buckle 4 so that the protrusion 11 abuts against the buckle 4, further enabling the buckle 4 to complete the connection and fixation between the upper 1 and the sole 2, ensuring that the upper 1 and the sole 2 are tightly bonded, and making the overall structure more stable.

[0046] Reference Figure 4 In some embodiments, there may be one or more buckles 4. In this embodiment, there are two buckles 4, which are arranged in a cross pattern to accommodate the fastening needs of different parts. This ensures that the connection remains secure and does not wear or break even during frequent pulling and wearing.

[0047] The implementation principle of an unlined shoe in this application embodiment is as follows: by heating and activating the hot-melt reinforcing fibers of the shoe upper 1, it fills and solidifies in the first groove 31, forming a high-strength connection between the shoe upper 1 and the sole 2. The protrusion 12 is connected with the second groove 33, which improves the stability of the connection between the shoe upper 1 and the sole 2. By setting the protrusion 11, the protrusion 11 passes through the first through hole 32 of the outer edge 3 and the second through hole 41 of the buckle 4 in sequence, and the sole 2 and the shoe upper 1 are fixed by the buckle 4.

[0048] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A type of unlined shoe, characterized in that: Includes the upper (1) and the sole (2); The sole (2) is fixedly connected to an outer edge (3) on one side. The outer edge (3) surrounds the outer edge of the sole (2) to form a first groove (31) for accommodating the upper (1). One side of the upper (1) is located in the first groove (31). The upper (1) is made of a composite material of wool felt and hot-melt reinforcing fiber. Under heating conditions, one side of the upper (1) is bonded and fixed to the groove wall of the first groove (31) of the sole (2).

2. The liningless shoe type according to claim 1, characterized in that: The shoe upper (1) is provided with a protrusion (11), and the outer edge (3) is provided with a first through hole (32) for the protrusion (11) to pass through.

3. The liningless shoe type according to claim 2, characterized in that: The protrusions (11) are provided in multiple ways, and the protrusions (11) are provided on both sides of the outer edge (3).

4. The liningless shoe type according to claim 2, characterized in that: The protrusion (11) is made of wool felt.

5. The liningless shoe type according to claim 4, characterized in that: The outer diameter of the protrusion (11) is larger than the diameter of the first through hole (32), and the protrusion (11) passes through the first through hole (32) and abuts against the outer edge (3).

6. The liningless shoe type according to claim 1, characterized in that: The shoe upper (1) has a plurality of protrusions (12) on one side, and the first groove (31) has a plurality of second grooves (33) on its groove wall to accommodate the protrusions (12).

7. The liningless shoe type according to claim 1, characterized in that: The sole (2) includes an inner sole (21) and an outer sole (22), wherein the outer sole (22) is made of rubber and the inner sole (21) is made of polyurethane.

8. A liningless shoe type according to claim 4, characterized in that: It also includes a buckle (4), which is provided on the shoe upper (1). One end of the buckle (4) is connected to one side of the outer edge (3), and the other end is connected to the other side of the outer edge (3). The buckle (4) is made of elastic material.

9. A linerless shoe type according to claim 8, characterized in that: The buckle (4) has a second through hole (41) at each end for the protrusion (11) to pass through. The outer diameter of the protrusion (11) is larger than the diameter of the second through hole (41). One end of the buckle (4) is connected to one of the protrusions (11) on one side of the outer edge (3), and the other end is connected to one of the protrusions (11) on the other side of the outer edge (3). The protrusion (11) passes through the second through hole (41) and abuts against the side wall of the buckle (4).

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