A casual shoe with a lightweight EVA foam sole

Abstract

This utility model relates to the field of casual shoe design technology, and more particularly to a casual shoe with a lightweight EVA foam sole. The technical solution includes: a sole body and an upper body, the upper body being sewn onto the sole body. The sole body includes an abrasion-resistant layer, a cushioning layer, and a bending groove formed on the upper surface of the cushioning layer at the foot position. The cushioning layer is embedded in a groove formed by the indentation of the upper surface of the abrasion-resistant layer. The cushioning layer includes a covering layer and an EVA layer disposed in a cavity inside the covering layer. The EVA layer has multiple weight-reducing holes vertically penetrating its upper and lower surfaces. The upper and lower surfaces of the covering layer each have pre-drilled holes corresponding to the positions of the weight-reducing holes. This utility model possesses good bending performance and alleviates walking fatigue, solving the problem of existing casual shoes causing inconvenience and fatigue in foot bending due to excessive sole rigidity during walking.

Description

Technical Field

[0001] This utility model relates to the field of casual shoe design technology, specifically a casual shoe with a lightweight EVA foam sole. Background Technology

[0002] In traditional casual shoe design, to achieve basic cushioning and support, rigid materials or additional support components are typically used in the sole structure, such as embedding a rigid support plate in the midsole to enhance arch support. While this design can improve the shoe's stability and durability to some extent, its relatively fixed structure significantly restricts the degree of natural flexion during walking, especially when the foot bends, causing inconvenience for the wearer when walking or running. Particularly in situations requiring frequent forefoot movement, this design can lead to discomfort and affect the natural flow of the gait.

[0003] Due to the aforementioned structural design, existing casual shoes, while providing support and cushioning, often neglect the flexibility and adaptability of the sole during walking. This can easily lead to fatigue for users after prolonged walking or exercise, and may cause discomfort in the foot muscles or joints.

[0004] Therefore, there is a need to develop a casual shoe with a lightweight EVA foam sole to address the aforementioned issues. Utility Model Content

[0005] The purpose of this invention is to provide a casual shoe with a lightweight EVA foam sole, which has good bending performance and relieves walking fatigue, solving the problem that existing casual shoes cause inconvenience in foot bending and easy fatigue during walking due to excessive rigidity of the sole.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a casual shoe with a lightweight EVA foam sole, comprising a sole body and an upper body, wherein the upper body is sewn onto the sole body, and the sole body comprises an abrasion-resistant layer, a cushioning layer, and a bending groove formed on the upper surface of the cushioning layer at the foot position; the cushioning layer is embedded in a groove formed by the indentation of the upper surface of the abrasion-resistant layer; the cushioning layer comprises a covering layer and an EVA layer disposed in the inner cavity of the covering layer; the EVA layer has a plurality of weight-reducing holes that vertically penetrate its upper and lower surfaces; the upper and lower surfaces of the covering layer are respectively provided with reserved holes corresponding to the positions of the weight-reducing holes.

[0007] Preferably, the bending groove is laterally disposed in the foot area on the upper surface of the cushioning layer to improve the bending performance of the sole body in the forefoot area.

[0008] In the design, the bending groove runs horizontally through the foot area on the upper surface of the cushioning layer, which realizes the local weakening of the sole body in the forefoot area and has the function of improving bending performance.

[0009] Preferably, the lower end face of the wear-resistant layer forms a walking surface that contacts the ground, and the upper end face is recessed to form a groove, and the buffer layer is embedded in the groove by adhesive bonding.

[0010] In the design, the lower end face of the wear-resistant layer forms the walking surface that contacts the ground, while the upper end face is recessed to form a groove. A buffer layer is then embedded through adhesive bonding, achieving a stable bond between the wear-resistant layer and the buffer layer, thus providing a structurally integrated function.

[0011] Preferably, the EVA layer is made of a lightweight foamed material and has weight-reducing holes arranged in a rectangular array, with each weight-reducing hole vertically penetrating the upper and lower surfaces of the EVA layer.

[0012] In the design, the EVA layer is made of lightweight foam material, with weight-reducing holes arranged in a rectangular array and vertically penetrating the upper and lower surfaces. This optimizes the material distribution and enables the reduction of overall weight while maintaining structural continuity.

[0013] Preferably, the upper and lower surfaces of the coating layer are respectively provided with reserved holes corresponding to the positions of the weight reduction holes.

[0014] In the design, the upper and lower surfaces of the coating layer are respectively provided with reserved holes corresponding to the positions of the weight reduction holes, which realizes the alignment and fit between the coating layer and the EVA layer in the hole positions and has the function of facilitating molding.

[0015] Preferably, the reserved hole and the weight reduction hole are aligned vertically to form a through-hole structure that extends along the thickness direction.

[0016] In the design, the reserved holes and weight-reducing holes are aligned vertically to form a through-hole structure that runs through the thickness direction, realizing the connection of the internal channels of the sole body and enhancing the functions of breathability and structural coordination.

[0017] Compared with the prior art, the beneficial effects of this utility model are as follows: This invention features a bending groove on the upper surface of the cushioning layer at the foot position, and integrates a composite structure consisting of a covering layer and an EVA layer within the cushioning layer. The EVA layer has weight-reducing holes that vertically penetrate its upper and lower surfaces, while the covering layer has corresponding pre-drilled holes on its upper and lower surfaces. Because the pre-drilled holes themselves form a recessed structure, the material around them is relatively hard, while the holes themselves, connected to the internal weight-reducing holes, form local soft areas. This creates a difference in hardness when pressure is applied during walking, thus providing point-like flexible support to the sole. Simultaneously, the bending groove allows the forefoot area of ​​the sole to have controllable bending capability, effectively reducing overall rigidity. The synergistic effect of these structures allows the sole to conform to the natural bending motion of the foot during walking, avoiding the restriction of flexion and extension by traditional hard structures, while also providing micro-massage stimulation through alternating soft and hard local deformation, relieving muscle fatigue caused by prolonged walking, thereby improving bending performance and enhancing wearing comfort. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the main structure of this utility model; Figure 2 This is a schematic diagram of the sole body structure of this utility model; Figure 3 This is a frontal cross-sectional view of the sole body of the present invention. Figure 4 For the present utility model Figure 3 A magnified schematic diagram of the structure at point A in the middle.

[0019] In the diagram: 1. Shoe sole body; 11. Abrasion-resistant layer; 12. Cushioning layer; 121. Covering layer; 1211. Reserved hole; 122. EVA layer; 1221. Weight reduction hole; 13. Bending groove; 2. Shoe upper body. Detailed Implementation

[0020] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0021] Example: Figures 1 to 4 As shown, one embodiment of this utility model is a casual shoe with a lightweight EVA foam sole, comprising a sole body 1 and an upper body 2.

[0022] The upper body 2 is sewn onto the sole body 1 to form a complete casual shoe structure; the sole body 1 has an overall arc-shaped outline to match the curve of the human foot to improve wearing comfort.

[0023] The sole body 1 includes an abrasion-resistant layer 11, a cushioning layer 12, and a bending groove 13. The abrasion-resistant layer 11 is located on the outermost layer of the sole body 1, and its lower end surface is the walking surface in contact with the ground, which has good abrasion resistance and anti-slip performance. The upper end surface of the abrasion-resistant layer 11 is recessed to form a groove, and the cushioning layer 12 is installed in the groove by adhesive bonding, so that the cushioning layer 12 and the abrasion-resistant layer 11 form a stable composite structure.

[0024] The cushioning layer 12 is located on the inner side of the wear-resistant layer 11. A bending groove 13 is provided on its upper surface in the foot area. The bending groove 13 is arranged horizontally through the foot, which can effectively enhance the flexibility and bending performance of the sole body 1 in the forefoot area, thereby improving the natural fit and comfort when walking.

[0025] The buffer layer 12 consists of a covering layer 121 and an EVA layer 122. The buffer layer 12 is embedded as an integral module into the wear-resistant layer 11, and the covering layer 12 serves to enclose and position the material. The covering layer 121 has a hollow structure with a cavity on its inner side. The EVA layer 122 is injection-molded into this cavity. The EVA layer 122 is made of lightweight foam material and has excellent shock absorption performance and elastic recovery capability.

[0026] Multiple weight-reducing holes 1221 are vertically arranged in a rectangular array on the EVA layer 122. These weight-reducing holes 1221 penetrate the upper and lower surfaces of the EVA layer 122, which not only reduces the overall weight, but also enhances the breathability and cushioning rebound effect of the sole.

[0027] The upper and lower surfaces of the covering layer 121 are respectively provided with reserved holes 1211 corresponding to the positions of the weight-reducing holes 1221, and the reserved holes 1211 themselves constitute an indented structure. When the user walks, the sole of the foot contacts the insole and applies pressure. Because the material at the reserved hole 1211 is relatively soft due to its connection with the internal weight-reducing holes 1221, the surrounding area of ​​the covering layer 121 remains relatively rigid. This forms a localized support area with alternating softness and hardness, which provides point-like soft support and micro-massage to the sole of the foot, helping to stimulate acupoints on the sole of the foot, promote blood circulation, and relieve fatigue caused by walking for a long time. At the same time, the reserved holes 1211 and the weight-reducing holes 1221 are aligned vertically to form a through-hole structure, achieving both lightweight design and functionality and comfort.

[0028] Working principle and usage process of this utility model: When a user walks in these casual shoes, the sole body 1 first contacts the ground through the wear-resistant layer 11, whose wear-resistant properties can effectively extend the service life of the sole; at the same time, the cushioning layer 12 absorbs the impact of the foot and reduces the burden on the joints.

[0029] During the foot strike phase, the flex groove 13, in conjunction with arch movement, achieves natural flexion, reducing discomfort caused by the rigidity of the sole. Meanwhile, the pre-drilled holes 1211 on the overlay layer 121, acting as recessed grooves, provide a gentle and dynamic massage stimulation to the sole under pressure due to the difference in hardness between the local soft area and the surrounding hard area, enhancing the wearing experience. The EVA layer 122, with its high resilience, quickly recovers its deformation, ensuring a continuous and stable cushioning effect, and works in conjunction with the overlay layer 121 to maintain the overall stability of the sole structure.

[0030] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

Claims

1. A casual shoe with a lightweight EVA foam sole, comprising a sole body (1) and an upper body (2), wherein the upper body (2) is sewn onto the sole body (1), characterized in that: The sole body (1) includes a wear-resistant layer (11), a cushioning layer (12), and a bending groove (13) on the upper surface of the cushioning layer (12) at the foot position; the cushioning layer (12) is embedded in the groove formed by the indentation on the upper surface of the wear-resistant layer (11); the cushioning layer (12) includes a covering layer (121) and an EVA layer (122) in the inner cavity of the covering layer (121); the EVA layer (122) is provided with a plurality of weight-reducing holes (1221) that penetrate vertically through its upper and lower surfaces; the upper and lower surfaces of the covering layer (121) are respectively provided with reserved holes (1211) corresponding to the positions of the weight-reducing holes (1221).

2. A casual shoe with a lightweight EVA foam sole according to claim 1, characterized in that, The bending groove (13) is horizontally disposed in the foot area on the upper surface of the buffer layer (12) to improve the bending performance of the sole body (1) in the forefoot area.

3. A casual shoe with a lightweight EVA foam sole according to claim 1, characterized in that, The lower end face of the wear-resistant layer (11) forms a walking surface that contacts the ground, and the upper end face is recessed to form a groove. The buffer layer (12) is embedded in the groove by adhesive bonding.

4. A casual shoe with a lightweight EVA foam sole according to claim 1, characterized in that, The EVA layer (122) is made of lightweight foam material and has weight-reducing holes (1221) arranged in a rectangular array. Each weight-reducing hole (1221) vertically penetrates the upper and lower surfaces of the EVA layer (122).

5. A casual shoe with a lightweight EVA foam sole according to claim 1, characterized in that, The upper and lower surfaces of the covering layer (121) are respectively provided with reserved holes (1211) corresponding to the positions of the weight reduction holes (1221).

6. A casual shoe with a lightweight EVA foam sole according to claim 1, characterized in that, The reserved hole (1211) and the weight reduction hole (1221) are aligned vertically to form a through hole structure that extends along the thickness direction.

Images