Minimalist tube sock shoe

Abstract

This utility model belongs to the field of footwear and sock technology, and discloses a minimalist sock shoe, which includes a sock body and an elastic midsole integrally formed from elastic foam injection molding material and the lower fabric layer of the sock body. The lower fabric layer of the sock body has injection molding gaps or perforations between the knitting threads. The elastic midsole is a three-dimensional interlocking structure formed by the elastic foam injection molding material passing through the gaps or perforations between the knitting threads of the lower fabric layer of the sock body, encasing the knitting threads inside the elastic foam injection molding material. This utility model, through a minimalist design improvement, makes the entire product an integrated structure, easy to manufacture, use, and wear. The three-dimensional interlocking structure between the sock body and the elastic foam injection molding material significantly enhances the structural stability of the sock shoe itself, greatly reduces the product's weight, and makes it lightweight and durable.

Description

Technical Field

[0001] This utility model relates to the field of footwear and sock products, specifically to a minimalist tube sock shoe. Background Technology

[0002] Existing footwear products (including sock shoes) are all mass-produced and finalized before leaving the factory. They are manufactured in batches according to standards such as size, and the structure of the product is finalized before leaving the factory. In terms of product function, performance, and user experience, they are relatively simple. The overall structure is complex and heavy, and they can easily restrict and limit foot movement, failing to meet the requirements of sports biomechanics. Since the uppers and socks are made of fabric, the interfacial adhesion between the two and plastic materials is poor. Therefore, only physical methods such as sewing can be used to firmly connect the two, which leads to the complexity of product structure, manufacturing process, and equipment.

[0003] The minimalist sock-shoes currently available on the market are difficult to popularize due to numerous inherent problems. For example, the socks disclosed in CN 201869787 U have a sole glued or injection-molded onto the bottom of the sock, but the sole and sock have no synergistic relationship; the connection between the sole and the sock fabric layer is small, the connection strength is low, it is easy to separate, and it is not durable. CN211021151 U discloses a sock-shoe sole and sock-shoe, wherein the sock-shoe includes an independently structured sole and a knitted upper, wherein the knitted upper (sock) does not have a sole, and there is no structural or functional synergy between it and the sole. Furthermore, since socks or knitted shoe uppers are made of layered fabrics woven from materials such as knitting yarn, they have a rough, porous, and elastic structure. If conventional bonding or injection molding processes are used to directly connect them to components such as the sole, the interfacial bonding strength is low and it is difficult to withstand the various external forces during wear and activity. The sole is very easy to come off during use, and the socks' own wrapping force is also insufficient to meet the needs of medium- to high-intensity sports such as endurance training and competition.

[0004] In summary, existing technologies for the standardized production, sales, and use of socks and footwear products result in complex structures, with each shoe weighing 200 grams or more (relatively heavy). Consumers cannot make local adjustments based on specific application scenarios, usage, and experience needs. A single product cannot simultaneously meet the diverse needs of different consumers, and suffers from problems such as low connection strength, limited functionality, restricted applications, and poor user experience. Utility Model Content

[0005] This utility model provides a minimalist sock shoe. Through a minimalist improvement on the product structure, the sock and the sole form a three-dimensional interlocking structure and cooperate with each other in function, forming an integrated molded structure. The parts are reliably connected and flexibly adaptable, thus solving the above-mentioned technical problems of existing products.

[0006] The technical solution is as follows: A minimalist sock shoe, characterized in that: it includes a sock body made of knitted yarn, and an elastic midsole integrally formed with the lower fabric layer of the sock body and an elastic foam injection molding material; The lower section of the fabric layer of the stocking body is provided with non-through gaps or perforations for injection molding between the knitting threads. The aforementioned elastic insole for stockings is a three-dimensional interlocking structure formed by elastic foam injection molding material passing through the gaps or perforations between the knitting threads of the lower section of the stocking body fabric layer, thus encasing the knitting threads inside the elastic foam injection molding material.

[0007] The elastic insole of the socks includes an integrally molded upper elastic insole layer, an elastic fabric permeable layer, and a lower elastic insole layer; wherein, the portion of the elastic foam injection molding material formed on the inner side of the lower section of the fabric layer of the sock body is the upper elastic insole layer, the portion formed on the outer side of the lower section of the fabric layer of the sock body is the lower elastic insole layer, and the portion formed inside the lower section of the fabric layer of the sock body and combined with the knitting yarn is the elastic fabric permeable layer.

[0008] Compared with the prior art, the minimalist sock-like shoes provided by this utility model have at least the following beneficial effects: 1. Significantly simplified the product and improved connection strength. This invention firstly features a minimalist design improvement of the product structure, resulting in an integrated molding structure that is easy to manufacture, use, and wear. The three-dimensional interlocking structure between the sock body and the elastic foam injection molding material significantly enhances the structural stability of the sock shoe itself and greatly reduces the weight of the product, with each shoe weighing less than 80 grams, making it lightweight and durable.

[0009] 2. It has a reliable connection structure. The elastic insole of the stockings features a U-shaped injection molding interface between the stocking body and the elastic foam injection molding material. This results in a large injection molding area and strong connections throughout, providing protection in multiple directions and withstanding external forces from various directions. The reliable connection and stable structure make the overall structure robust and durable, and it is not prone to deformation or damage under proper use. The injection molding uses interlocking pores or perforations created by the interlacing of knitted threads, which are not interconnected but allow the upper and lower surfaces of the fabric layer to pass through, forming a unique three-dimensional interlocking structure by wrapping the knitted threads.

[0010] 3. Lightweight and breathable, naturally soft and fits snugly against the feet. This invention provides a minimalist sock-shoe design that eliminates the need for traditional shoes, freeing the feet from their constraints. All parts of the sock-shoe that come into contact with the foot are made of elastic material, offering a soft and snug fit that better adapts to different foot shapes (automatically adjusting to localized foot deformities) and providing a comfortable sense of enclosure and freedom. The fabric layer is perforated throughout, and these perforations naturally deform with pressure changes in the foot's shape. The mesh is larger and more breathable in areas with protrusions (deformations), eliminating the friction, pressure, and dampness associated with traditional shoes. This prevents issues like chafing, squeezing, and sweaty feet. The sock-shoe is lighter, thinner, and drier overall, significantly improving comfort. It is particularly suitable for users with unconventional foot shapes, but also for ordinary users in various scenarios, activities, and sports, better fulfilling the biomechanical functions of foot movement.

[0011] 4. High degree of assembly freedom This utility model also provides an elastic fixing strap that can be used in conjunction with the product. The elastic fixing strap can be detachably set at any position on the minimalist sock shoe by means of its elastic tension to increase local strength or pressure. After purchasing, consumers can choose different splicing positions and tightness to connect and adjust according to specific sports, scenarios, needs and experience, so that one product can meet the needs of multiple scenarios and sports at the same time.

[0012] 5. Easy to use and readily adopted. This invention's minimalist sock-like shoe is lighter than traditional shoes (reducing weight by 30% or more), has fewer parts, and is convenient for consumers to use and carry. This invention is easy to automate production, has low overall cost, is comfortable to wear, durable, and easy to promote and popularize. Attached Figure Description

[0013] Figure 1 These are schematic diagrams of the three-dimensional external structure of the sock-like shoes of Embodiment 1 (right figure) and Embodiment 2 (left figure) of this utility model; Figure 2 A side view structural diagram of the sock shoe of Embodiment 1 of this utility model; Figure 3 for Figure 2 A schematic diagram of the full cross-section along the centerline of the length direction; Figure 4 for Figure 2 A partial cross-sectional structural diagram along the width direction and the center line of the foot position; Figure 5 This is a side view of the stocking body in Embodiment 1 of this utility model; Figure 6 for Figure 5 A schematic diagram of the first upward-view structure of the mid-calf sock body; Figure 7 for Figure 5 A schematic diagram of the second upward-view structure of the mid-calf sock body; Figure 8 for Figure 5 A schematic diagram of the third upward-view structure of the mid-calf sock body; Figure 9 This is a three-dimensional structural diagram of another type of sock shoe according to Embodiment 1 of this utility model; Figure 10 This is a bottom view structural diagram of the first type of sock shoe in this embodiment of the present invention; Figure 11 This is a bottom view structural diagram of the second type of sock shoe in this embodiment of the present invention; Figure 12 This is a bottom view structural diagram of the third type of sock shoe in this utility model embodiment; Figure 13 This is a side view of the sock-like shoe according to Embodiment 2 of this utility model; Figure 14 This is a schematic diagram of the main structure of the first type of elastic fastening band in the embodiments of this utility model; Figure 15 for Figure 14 A schematic diagram of the full cross-section along the centerline of the length direction; Figure 16 This is a schematic diagram of the main structure of the second type of elastic fastening band in the embodiments of this utility model.

[0014] In the picture: A. The main body of the sock-like shoe; B. Elastic fastening band 1. Stocking body; 11. Stocking top; 12. Stocking tube; 13. Boat-shaped stocking sole; 14. Seam; 15. Perforation; 2. Elastic midsole for socks; 21. Upper layer of elastic midsole for socks; 22. Lower layer of elastic midsole for socks; 23. Elastic fabric permeable layer; 24. Elastic foam injection molding material; 3. Three-dimensional concave-convex structure; 31. Midsole elastic groove; 311. Midsole honeycomb elastic groove; 312. Midsole fan-shaped elastic groove; 32. Midsole elastic insert post; 321. Midsole honeycomb elastic insert post; 322. Midsole fan-shaped elastic insert post; B. Elastic fastening band; B1. Elastic layer; B2. Breathable and absorbent layer. Detailed Implementation

[0015] The following is combined Figures 1 to 16 The technical solution of this utility model is described in conjunction with several embodiments.

[0016] Example 1 See Figures 1 to 12 The minimalist sock shoe provided in this embodiment includes a sock body 1 made of knitted yarn and an elastic sock midsole 2 integrally formed with the lower fabric layer of the sock body by elastic foam injection molding material 24. The sock body 1 and the elastic sock midsole 2 together form the sock shoe body A. The stocking body 1 includes an upper fabric layer and a lower fabric layer. The lower fabric layer has injection molding slits 14 or perforations 15 between its knitting threads. These slits 14 or perforations 15 are pre-set between the knitting threads of the lower fabric layer, allowing the elastic foam injection molding material 24 to pass through or remain during injection molding to form a three-dimensional interlocking structure. These slits 14 or perforations 15 are either regular or irregularly distributed between the knitting threads of the lower fabric layer, penetrating the thickness of each fabric layer. The injection molding slits 14 or perforations 15 are formed by the interlacing of knitting threads, creating pores that connect the upper and lower surfaces of the fabric layer (but not connect with each other). After the elastic foam material penetrates, it wraps around the knitting threads to form a three-dimensional interlocking structure. The pore width (or diameter) is 5-20 mm, and the spacing density is 10-20 pores / dm².

[0017] The upper fabric layer of the stocking body includes the cuff 11 and the leg 12; the lower fabric layer of the stocking body includes a boat-shaped sole 13 and a skirt extending upward along the side of the boat-shaped sole and connected to the leg 12; the boat-shaped sole 13 is open at the top, and when worn, includes the sole and a skirt extending upward from the periphery of the sole to a set height (usually 1-3 cm), with the skirt reaching the boat-shaped fabric section around the open edge; more specifically, the injection molding gaps 14 or perforations 15 are pre-fabricated directly between the knitting threads of the boat-shaped sole 13 during weaving. After the elastic insole 2 of the stocking is integrally molded with the boat-shaped sole 13, the elastic foam injection molding material 24 simultaneously covers the inner and outer sides of the boat-shaped sole 13, as well as the upwardly extending skirt portion, providing a connecting structure for other accessories subsequently installed inside or outside the stocking body 1, and providing foot protection, shock absorption, anti-slip, and decorative functions over a wider range.

[0018] The elastic insole 2 of the sock includes an integrally formed upper elastic insole 21, an elastic fabric penetrating layer 23, and a lower elastic insole 22; wherein, the portion of the elastic foam injection molding material 24 formed on the inner side of the lower section of the fabric layer of the sock body is the upper elastic insole 21, the portion formed on the outer side of the lower section of the fabric layer of the sock body is the lower elastic insole 22, and the portion formed on the inner side of the lower section of the fabric layer of the sock body and combined with the knitting yarn is the elastic fabric penetrating layer 23.

[0019] Each layer of the elastic insole 2 of the socks is formed by the elastic foam injection molding material 24 passing through the injection molding gaps 14 or perforations 15 between the knitting threads of the lower section of the fabric layer of the sock body. When the knitting is simultaneously injection molded from the inside and outside of the fabric layer, the knitting threads are wrapped inside the elastic foam injection molding material 24, and a three-dimensional interlocking structure is formed between the elastic foam injection molding material 24 and the knitting threads. In other embodiments, the elastic insole 2 of the socks is further formed by the elastic foam injection molding material 24 being injection molded under the condition that the gaps 14 between the knitting threads of the lower section of the fabric layer of the sock body are first opened by external force or perforations 15 are reserved.

[0020] After the elastic foam injection molding material 24 is injection molded, the three-dimensional interlocking elastic material layer formed by the lower section of the sock fabric layer and the elastic foam injection molding material after injection molding and shaping symmetrically covers the inner and outer surfaces of the boat-shaped sock sole 13, forming the sock elastic insole 2; the cross-section of the sock elastic insole 2 in both the length and width directions is "U" shaped. The total thickness of the cross-section of the sock elastic insole 2 is 6~40mm, of which the average thickness ratio of the upper layer 21 and the lower layer 22 of the sock elastic insole is 1:(2~5) to ensure the connection strength between the two layers, as well as the structural stability of the connection between the two layers and the covered fabric layer, and the overall cushioning and protective performance; the thickness of the elastic fabric penetration layer 23 is 1~3mm. When calculating the thickness ratio of the upper layer 21 and the lower layer 22 of the elastic sock elastic insole, the thickness of the elastic fabric penetration layer 23 is evenly divided and included in the average thickness of the upper layer 21 and the lower layer 22 of the elastic insole.

[0021] The elastic foam injection molding material 24 forming the elastic insole 2 of the socks has three-dimensional concave-convex structures 3 for connection, positioning and elastic cushioning on both its inner and outer surfaces; the upper surface of the upper layer 21 of the elastic insole of the socks has three-dimensional concave-convex structures 3 for connection, positioning and elastic cushioning; the lower surface of the lower layer 22 of the elastic insole of the socks also has three-dimensional concave-convex structures 3 for connection, positioning and elastic cushioning; each layer of the elastic insole 2 of the socks is injection molded when the fabric layer is flat or curved, under the condition that the gap 14 between the knitting threads of the lower section of the sock fabric layer is stretched open by external force (making the mesh larger) or the perforations 15 are fixed. Only when the fabric layer is stretched open by external forces such as molds to create gaps 14 or perforations 15 for injection molding can the problem of small gaps or closed perforations caused by the elasticity of the knitting threads under normal conditions be solved. This makes it difficult for the elastic foam injection molding material 24 to pass through the fabric layer and fill the gaps or perforations between the knitting threads. This allows the upper layer 21 of the elastic midsole of the sock, the elastic fabric penetration layer 23, and the lower layer 22 of the elastic midsole of the sock to be integrally formed and reliably connected. At this time, by adjusting the material and thickness of the upper layer 21 of the elastic midsole of the sock, the lower section of the sock fabric layer, and the lower layer 23 of the elastic midsole of the sock, and by adjusting the shape and position of the three-dimensional concave and convex structure 3 on the upper layer 21 and the lower layer 22 of the elastic midsole of the sock, the overall wearing experience, function, and performance parameters of the minimalist sock shoe can be adjusted in a diversified way, and the product series can be made more diverse.

[0022] The sock body 1 is a layered short, mid, or long sock made of elastic knitting yarn. The knitting yarn (fabric) material includes cotton, polyester, nylon, spandex, and blended fibers. Classified by use, it includes everyday socks (mainly cotton), sports socks (enhanced moisture-wicking, cushioning, and support functions), compression socks (for medical or sports recovery use, featuring gradient pressure design), and decorative socks (mesh socks, emphasizing fashion). In some embodiments of this utility model, when using high-end sports socks, compression socks, etc., due to the dense structure and poor elasticity of the lower fabric layer, or the overall thickness of the knitting yarn structure (the sole usually has multi-layered thickened areas, such as terry cloth protective structures, textured anti-slip structures, etc., with a thickness of approximately 2-5mm), it is difficult to directly create mesh and connect the upper and lower parts of the fabric layer using a mold. Two methods are needed to solve this: the first is to pre-leave injection molding gaps or perforations between the knitting yarns of the lower fabric layer during sock manufacturing; the second is to first perforate the socks using a mold before injection molding. Whether using molds to open gaps or perforations between knitting threads, or pre-fabricating gaps and perforations, it is non-destructive. It does not damage the original structure of the stocking fabric layer, nor does it cut the knitting threads. It only changes the direction and spatial position of the knitting threads, creating conditions for the internal and external elastic foam injection molding materials to penetrate, connect with each other, and reliably connect during injection molding, thus ensuring the connection strength between the elastic foam injection molding material and the fabric layer.

[0023] The three-dimensional concave-convex structures 3 in various embodiments of this utility model are all structures with thickness and three-dimensional shape, consisting of protrusions or grooves or combinations thereof. The grooves (elastic interlocking posts or interlocking edges of the midsole) are formed by the protrusions as surrounding edges, or grooves are formed in the recessed areas around the protrusions. Specifically, the choice can be made according to actual needs, including but not limited to: honeycomb hexagons, flower shapes, wave shapes, square shapes, annular shapes, cylindrical shapes, conical shapes, trapezoidal shapes, fan shapes, arc shapes, quadrangular pyramids and combinations thereof that can provide detachable connection surfaces for upper and / or lower, internal and / or external components, or other suitable concave-convex shapes and structures. Protrusions and grooves with the same contour can be interchanged. In the three-dimensional concave-convex structure of the lower layer of the elastic midsole, an eccentric structure can also be provided to facilitate user differentiation of the left and right feet, such as an annular protrusion or groove with the center offset to one side, for user identification.

[0024] The elastic foam injection molding material 24 includes: base and modified EVA, E-TPU (expanded thermoplastic polyurethane), PEBAX (polyether block amide), composite foam material (EVA / E-TPU / PEBAX mixed structure), etc., all of which are conventional commercially available materials.

[0025] The independent sock shoe body A can directly form the basic design of a minimalist sock shoe. When worn, the minimalist sock shoe naturally elastically deforms according to the shape of the foot after wrapping around it, closely conforming to the contours of the foot. By changing the material of the elastic midsole 2 and / or increasing or decreasing its total thickness, the overall wearing experience and performance parameters of the sock shoe can be adjusted, including elasticity, protection, slip resistance, grip, ground clearance, and comfort. Users no longer need to wear shoes, completely solving the problem of strong local constraints, friction, and spatial restriction on the foot caused by existing shoes. It is especially suitable for consumers with localized foot shape deformities or abnormal postures (pronation, supination).

[0026] More specifically, the first minimalist sock shoe provided in this embodiment is a sand leisure and sports sock shoe, see [link / reference]. Figure 1The right image (left foot wearing) shows that the sock 1 is a layered mid-calf or knee-high sock made of high-elasticity (Lycra and nylon blend) knitting yarn, including an upper fabric layer (cuff 11, leg 13) and a lower fabric layer (boat-shaped sole 13). The lower fabric layer has a pre-formed long strip-shaped gap 14 (relatively larger than traditional gaps) for internal and external connection during injection molding. The elastic insole 2 is formed when the inner and outer sides of the lower fabric layer are simultaneously injection molded; the elastic foamed injection molding material EVA (ethylene-vinyl acetate copolymer) passes through and fills the spaces between the knitting yarns of the lower fabric layer under external force. The gap is formed by simultaneously wrapping the knitting threads inside the EVA layer from both the inside and outside of the lower section of the sock fabric layer, creating an integrated three-dimensional interlocking elastic material layer. The sock elastic insole 2 includes an integrally molded upper elastic insole layer 21, an elastic fabric penetrating layer 23, and a lower elastic insole layer 22. The average total thickness of the cross-section in both the length and width directions is 25mm to 40mm, with slight variations in thickness at different locations. It is thicker at the forefoot and heel, and thinner at other locations, making it an overall thickened type. The thickness ratio of the upper elastic insole layer 21 to the lower elastic insole layer 22 is 1:5. In this embodiment, the average total thickness of the sock elastic insole 2 is 30mm, with the upper elastic insole layer 21 having an average thickness of 5mm, the lower elastic insole layer 22 having an average thickness of 25mm, and the elastic fabric penetrating layer having an average thickness of approximately 1.5mm. These are evenly distributed and included in the average thickness calculation of either the upper or lower elastic insole layer. The total thickness of the elastic midsole in the socks corresponding to the ball of the foot and heel can be increased by 5-10mm to enhance support, shock absorption, protection and grip.

[0027] The three-dimensional concave-convex structure 3 in this embodiment includes continuously arranged midsole elastic interlocking grooves 31 and midsole elastic interlocking posts 32, which together form a honeycomb-shaped three-dimensional structure in which multiple independent units are interconnected and continuous. The first type of honeycomb-shaped three-dimensional concave-convex structure 3 is adopted. Figure 2 When the unit is in use, each independent unit has a central hexagonal groove (midsole honeycomb elastic interlocking groove 311) and a surrounding protrusion (midsole honeycomb elastic interlocking post 321) that continuously covers the surfaces of the upper layer 21 and the lower layer 22 of the elastic midsole of the stocking. The depth of the central hexagonal groove is 15~20mm and the diameter is 10~20mm. The width of the surrounding protrusion is 5~8mm and the height is 15~20mm. The specific dimensions can be adjusted according to actual needs. In this embodiment, the stocking body 1 and the elastic insole 2 can be firmly interlocked and connected as one piece through one-time foam injection molding, achieving high connection strength without the need for other physical methods (such as stitching). The bonding surface (i.e., the covering surface of the three-dimensional concave-convex structure 3) includes the stocking sole and the surrounding edge extending upwards to a height of 2-3 cm. When worn, the elastic insole 2 has a U-shaped cross-sectional profile in both length and width directions. Figure 4 This design increases the interlayer bonding strength and enhances the protection and aesthetics of the foot's sides. It can cushion and withstand forces from multiple directions on the foot, significantly increasing the total contact area with the sand. The design allows for free switching between forefoot and heel strikes to suit various sand play and sports needs. In this embodiment, the peel strength between the elastic midsole and the sock is ≥20N / cm, far exceeding the ≤10N / cm of traditional single-sided bonded or sewn structures.

[0028] Typical applications of this product include: suitable for ordinary users engaging in activities in environments such as deserts, beaches, grasslands, or muddy terrain. In these environments, when users wear ordinary athletic shoes, the total contact area between the sole and the ground is relatively small, making it easy for the shoe to sink into soft ground. Sand or mud can also easily seep into the shoe, causing discomfort. This invention uses a thickened and enlarged elastic sock-like midsole 2 to replace the sole. The honeycomb-like three-dimensional structure on multiple surfaces significantly increases the total contact area with soft ground, increasing friction and support (including lateral support). This makes the shoe less likely to sink into soft ground, and the foot contact point can be freely switched, allowing users to easily walk or run freely on soft ground, conforming to the principles of sports biomechanics. See also the appendix. Figure 1 The combination shown in the middle left image allows for additional flexibility. If necessary, an elastic band B can be wrapped around the sock opening (11 points) to more effectively prevent foreign objects such as sand or mud from entering the shoe, thus facilitating long-term wear.

[0029] The second type of minimalist sock shoe is the barefoot-feeling indoor casual and yoga sock shoe, which is basically the same as the sand casual and sports sock shoe, the difference being: Sock 1 is a short sock woven with high-elasticity yarn. The elastic midsole 2 of this product is an elastic material layer formed by injection molding of elastic latex material and fabric layer. Its total thickness in cross-section ranges from 6mm to 12mm, which is ultra-thin. The thickness ratio of the upper layer 21 to the lower layer 22 of the elastic midsole is 1:2. In this embodiment, the average total thickness of the elastic midsole 2 is 6mm, the average thickness of the upper layer 21 is 2mm, the average thickness of the lower layer 22 is 4mm, and the thickness of the elastic fabric penetration layer is about 1.0mm (divided and included in the thickness of the upper and lower layers of the elastic midsole) to enhance the barefoot feel, increase the adjustment ability of the proprioceptive system and the strength of the lower limb and foot muscles, and prevent injury during barefoot exercise. The total thickness of the elastic midsole at the heel position can be increased by 2-3mm to enhance local cushioning and protection while maintaining the barefoot feel.

[0030] It adopts a second type of honeycomb-shaped three-dimensional concave-convex structure ( Figure 9 Each independent unit includes a central hexagonal protrusion (honeycomb-shaped elastic interlocking post 321 on the midsole) and a groove surrounding the protrusion (honeycomb-shaped elastic interlocking groove 311 on the midsole), continuously covering the surfaces of the upper and lower elastic midsole layers 21 of the socks. The height of the central hexagonal protrusion is 2-3 mm and the diameter is 5-10 mm. The width of the groove surrounding the protrusion is 3-5 mm and the height is 2-3 mm, which can be adjusted according to actual needs. When worn, the coverage of this three-dimensional concave-convex structure 3 naturally transitions from the bottom of the sock to the side of the sock (the skirt of the boat-shaped sock bottom), extending upwards by 20-30 mm, covering part of the area of ​​the thinner toe and sides of the sock and the thicker heel, so as to enhance the connection stability and provide better protection, anti-slip, support, and decoration effects.

[0031] The third type of minimalist sock shoe is an auxiliary medical and nursing sock shoe. It is basically the same as the two minimalist sock shoes mentioned above, except that: Sock 1 is a low-elasticity, plus-size long or mid-calf sock primarily woven from cotton fiber yarn. The elastic insole is made of EVA elastic material, with a total cross-sectional thickness of 15mm-25mm, which is relatively thick. The thickness ratio of the upper to lower elastic insole layers is 1:4. This product uses antibacterial cotton yarn woven with a 3D three-dimensional plus-size knitting process. During sock manufacturing, multiple arrayed circular or elliptical perforations are pre-drilled in the lower section of the fabric layer for injection molding, ensuring the elastic foam injection material passes through smoothly and forms the final shape. This overcomes the limitations of existing plus-size long socks specifically designed for patients, which are only suitable for home use and lack outdoor functionality or suitability for extended wear. It employs a third type of three-dimensional concave-convex structure (…). Figure 10Based on the first honeycomb-shaped three-dimensional concave-convex structure, it further includes multiple midsole fan-shaped elastic interlocking grooves 312 and midsole fan-shaped elastic interlocking posts 322, and the midsole fan-shaped elastic interlocking grooves 312 are arranged in a centrally symmetrical manner with the midsole fan-shaped elastic interlocking posts 322 as the center; respectively set at the front, middle and rear positions of the sock elastic midsole 2.

[0032] The fourth type of minimalist sock shoe is the pressurized space capsule and sports sock shoe, which is basically the same as the sand leisure and sports sock shoe, indoor leisure and yoga sports sock shoe. The difference is: The elastic midsole 2 of the socks is an integrated elastic material layer formed by elastic foam injection molding material PU and the knitting yarn of the lower section of the sock fabric layer. Its average total thickness in cross-section is 8mm~16mm, which is relatively thin. The thickness ratio of the upper layer to the lower layer of the elastic midsole is 1:3. It adopts a composite three-dimensional concave-convex structure. Figure 11 The second honeycomb-shaped three-dimensional concave-convex structure further includes multiple midsole fan-shaped elastic interlocking grooves 312 and midsole fan-shaped elastic interlocking posts 322. The midsole fan-shaped elastic interlocking grooves 312 are arranged symmetrically with the midsole fan-shaped elastic interlocking posts 322 as the center. They are respectively set at the front, middle and rear positions of the elastic midsole 2. The height of the hexagonal central protrusion of the second honeycomb-shaped three-dimensional concave-convex structure is 6~10mm and the diameter is 5~10mm. The width of the surrounding groove is 5~8mm and the height is 5~10mm. The specific dimensions can be adjusted according to actual needs.

[0033] The fifth type of simple sock shoe is a travel and commuter sock shoe, which is basically the same as the three types of sock shoes mentioned above. The difference is that the elastic midsole 2 of the sock shoe adopts the fifth type of three-dimensional concave-convex structure. Figure 12 It is based on multiple midsole fan-shaped elastic interlocking grooves 312 and midsole fan-shaped elastic interlocking posts 322, and further includes a composite anti-slip protective agent cushioning structure with a back shape and an arc shape, so as to meet the needs of travel, walking, commuting and other scenarios.

[0034] Example 2 See Figure 1 (Left picture, right foot wearing) Figures 13 to 16The minimalist sock-shoe provided in this embodiment is basically the same as that in Embodiment 1, except that it also includes an elastic fastening band B. This elastic fastening band has a layered structure, with a strip-shaped or ring-shaped outline, and can be detachably connected to any position on the sock-shoe body A. The elastic fastening band includes an elastic layer B1 and a breathable and absorbent layer B2 disposed on the elastic layer. The breathable and absorbent layer B2 is a foam or fabric layer with a breathable and absorbent structure. The combined sock-shoe, with its assembly structure formed by the sock-shoe body A and the elastic fastening band, can solve the problems of strengthening local tension, connection strength, sweat absorption, and sealing the sock opening during exercise. The elastic layer B1 also has a three-dimensional concave-convex structure 3 for connection and cushioning, which is used to elastically interlock with the three-dimensional concave-convex structure on the outer surface of the elastic insole layer of the sock.

[0035] The elastic fastening band B, through an elastic tension structure and / or a three-dimensional concave-convex structure, can be detachably connected to any position on the sock shoe body. This increases the local tension of the minimalist sock shoe on the user at the connection point, enhancing the feeling of wrapping and tension (pressure) at that location, or improving the local connection strength. It is convenient to use, versatile in function, and features lightweight portability, small footprint, and easy cleaning. In this embodiment, the elastic woven band B is a woven elastic band made from chemical fiber materials, employing a multi-layer composite structure. Based on its length, it can be divided into long, medium, and short specifications. Based on its connection method, it can be divided into two specifications: strip open type and ring closed type. The standard length ranges from 5 to 25 cm, the standard width ranges from 0.5 to 12.5 cm, the thickness is 0.5 to 10 mm, and the elongation ratio is 1:(1.5 to 3). The tensile elastic recovery rate is ≥80% after 5 repeated stretchings following a 50% elongation (GB / T standard). The breaking strength is ≥150 N, and the breaking elongation is 50% to 100%. The specific type can be selected according to actual needs.

[0036] The series of products provided in this embodiment differ in their specific use of the sock shoe body A, elastic fastening band B and its connecting parts, as well as the differences in other functional accessories, resulting in differences in the overall function, performance, and user experience of the products. They can be further subdivided into categories such as sports training sock shoes and varicose vein assistive medical sock shoes, which will not be described in detail here.

[0037] The minimalist sock-shoe product provided in the above embodiments of this utility model is manufactured by first preparing the sock 1 and then obtaining the elastic midsole 2 of the sock through foam injection molding. When preparing the sock 1, multiple narrow strip-shaped gaps 14 or array-shaped perforations 15 can be pre-reserved in the lower section of the tubular fabric layer. During injection molding, an injection foaming mold device is used to first open and fix the lower section of the tubular fabric layer of the sock, so that the gaps 14 (mesh) or perforations 15 between the knitting threads open, and the fabric layer at that point is flattened. Elastic foam injection molding material is then injected from both the inner and outer sides of the tubular fabric layer. It is simultaneously foamed and molded in a closed cavity. The foaming pressure during injection molding causes the elastic foam injection molding material on both sides to pass through the gaps in the open braided lines and merge with each other. After shaping, they are firmly connected to each other and integrally formed with the braided lines of the lower section of the tubular fabric layer to form a three-dimensional interlocking structure of the elastic sock midsole, resulting in a minimalist sock shoe body. The elastic fastening band is prepared separately and is detachably combined with the sock shoe body during assembly.

[0038] The core performance and parameters of the elastic midsole 2 are as follows: Material: EVA (ethylene-vinyl acetate copolymer), PU (polyurethane) or latex foam material.

[0039] EVA version: density 0.15-0.3 g / cm³, resilience ≥40% (compression rebound rate), suitable for daily leisure or light exercise; PU version: density 0.2-0.4 g / cm³, resilience ≥50%, better durability, suitable for medium to high intensity exercise.

[0040] Average thickness: 6-40mm, can be selected according to needs, the thicker the thickness, the stronger the cushioning effect.

[0041] Shock absorption performance: Shock absorption value ≥40%, reducing the impact of movement on joints.

[0042] Weight control: Each minimalist sock-like shoe weighs ≤50g (size 42), which is more than 30% lighter than traditional shoes.

[0043] In actual production, the above parameters can be flexibly adjusted and optimized to ensure a balance between product performance, cost and user experience, in line with the design concept of "comfortable fit, on-demand selection, and scenario adaptation", while also meeting the needs of safety, durability and personalized consumption.

[0044] The key feature of the above embodiments of this utility model is that the structure of the minimalist sock shoe has been greatly simplified. The connection between the sock and the elastic foam injection molding material is firm and reliable. By selecting different materials, thicknesses, three-dimensional concave-convex structures, elastic fastening bands, etc. of the elastic midsole of the sock, a final product with flexible and varied structure, function, performance and experience can be obtained, making it suitable for different scenarios and different groups of people, and meeting consumers' needs for health, sports, fashion and individuality.

[0045] Using the solutions described in the above embodiments of this utility model, other series of minimalist sock shoes for adults, teenagers, children, toddlers and patients can also be prepared in other embodiments, all of which can achieve the technical effects described in this utility model application, and will not be listed one by one here.

[0046] Materials, processes, equipment, and parameters not specifically described in the embodiments of this utility model are all conventional technologies. Although embodiments of this utility model have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting this utility model. Those skilled in the art can make changes, modifications, substitutions, and variations to the above embodiments within the scope of this utility model, all of which are within the protection scope of this utility model.

Claims

1. A minimalist sock-like shoe, characterized in that: It includes a stocking body and an elastic insole made of elastic foam injection molding material integrally formed with the lower fabric layer of the stocking body; The lower section of the fabric layer of the stocking body is provided with non-through gaps or perforations for injection molding between the knitting threads. The aforementioned elastic insole for stockings is a three-dimensional interlocking structure formed by elastic foam injection molding material passing through the gaps or perforations between the knitting threads of the lower section of the stocking body fabric layer, and wrapping the knitting threads inside the elastic foam injection molding material.

2. The minimalist sock-like shoe according to claim 1, characterized in that: The elastic insole of the socks includes an integrally molded upper elastic insole layer, an elastic fabric permeable layer, and a lower elastic insole layer; wherein, the portion of the elastic foam injection molding material formed on the inner side of the lower section of the fabric layer of the sock body is the upper elastic insole layer, the portion formed on the outer side of the lower section of the fabric layer of the sock body is the lower elastic insole layer, and the portion formed inside the lower section of the fabric layer of the sock body and combined with the knitting yarn is the elastic fabric permeable layer.

3. The minimalist sock-like shoe according to claim 2, characterized in that: The upper layer, the elastic fabric penetration layer, and the lower layer of the elastic insole of the sock are all integrated three-dimensional interlocking structural layers formed by injection molding of elastic foam injection molding material under the condition that external force opens or perforates the gaps between the knitting threads of the lower section of the fabric layer of the sock body.

4. The minimalist sock-like shoe according to claim 2, characterized in that: The total thickness of the cross-section of the elastic insole of the sock is 6~40mm, wherein the average thickness ratio of the upper layer to the lower layer of the elastic insole of the sock is 1:(2~5); the thickness of the elastic fabric penetration layer is 1~3mm.

5. The minimalist sock-like shoe according to claim 1, characterized in that: The lower section of the sock body includes a boat-shaped sock sole, which is open at the top. When worn, it includes the sock sole and a skirt extending upwards from the periphery of the sock sole to a set height. The skirt reaches the boat-shaped fabric section around the open edge. The knitting threads of the boat-shaped sock sole have pre-reserved gaps or perforations for injection molding during the weaving process.

6. The minimalist sock-like shoe according to claim 5, characterized in that: The elastic foam injection molding material is symmetrically covered on the inner and outer surfaces of the boat-shaped sock sole to form a continuous elastic midsole; the cross-section of the elastic foam injection molding material forming the continuous elastic midsole is U-shaped.

7. The minimalist sock-like shoe according to claim 6, characterized in that: The elastic foam injection molding material forming the elastic midsole of the socks has a three-dimensional concave-convex structure on both its inner and outer surfaces for connection, positioning, and elastic cushioning.

8. The minimalist sock-like shoe according to claim 1, characterized in that: The sock body also includes an upper fabric layer connected to the lower fabric layer of the sock body, the upper fabric layer of the sock body including the sock cuff and the sock leg.

9. The minimalist sock-like shoe according to claim 1, characterized in that: It also includes an elastic fastening band, which has a layered structure and a strip or ring-shaped outline. It can be detachably connected to any position on the stocking body and the elastic insole of the stocking. The elastic fastening band includes an elastic layer and a breathable and absorbent layer disposed on the elastic layer. The breathable and absorbent layer is a foam or fabric layer with a breathable and absorbent structure.

10. The minimalist sock-like shoe according to any one of claims 1 to 9, characterized in that: The aforementioned injection molding slits or perforations are pre-set between the knitting threads of the lower section of the fabric layer of the stocking body, used to allow the elastic foam injection molding material to pass through or stay during injection molding to form multiple strip-shaped slits or circular or elliptical perforations in a three-dimensional interlocking structure.

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