Novel high-heeled shoe midsole lower structure

Abstract

The utility model discloses a novel high -heeled shoes middle sole lower layer structure relates to the footwear technology field, specifically be a kind of novel high -heeled shoes middle sole lower layer structure, including middle sole main body, the middle sole main body includes forefoot and rear foot, the junction of forefoot and rear foot is equipped with arch core support strip, the arch core support strip is bent and connected forefoot and rear foot, the arch core support strip is in line with the arch physiological curve of human foot bottom. Through layered function optimization, biomechanics curve adaptation and gradient material design, realize the synergistic effect of arch accurate support, mechanical transmission continuity, stress dispersion and dynamic buffering, improve the wearing comfort and health of high -heeled shoes.

Description

Technical Field

[0001] This utility model relates to the field of footwear technology, specifically to a novel midsole structure for high heels. Background Technology

[0002] High heels are an important type of footwear for women's daily wear. Their core design principle is to adjust the body's center of gravity through the height of the heel, thereby creating a slender figure.

[0003] However, existing patents have the following drawbacks:

[0004] (1) The support strip does not fit the physiological curve of the foot arch well enough, so it cannot form an effective mechanical transmission and the support effect is limited to a specific area.

[0005] (2) The transition between the functional layers of the midsole (such as the forefoot, heel and arch) is stiff. Sudden changes in material density or hardness can easily cause stress to concentrate at the end of the metatarsal bone or the anterior edge of the calcaneus. Long-term wear can easily cause soft tissue strain of the foot.

[0006] (3) The midsole and upper are not very stable. The forefoot area is prone to slippage due to bending and deformation during walking, which affects the stability of wearing the shoes. Fourth, the heel cushioning layer is not designed to absorb and feedback the impact force when landing, and cannot balance comfort and support.

[0007] (4) The existing midsole structure has poor adaptability to different shoe sizes (such as 35-40). The length, angle and radius of the transition surface of the arch support strip are not adjusted according to the differences in foot length, resulting in insufficient support or excessive restraint in both large and small sizes of shoes. Utility Model Content

[0008] The purpose of this invention is to provide a novel midsole structure for high heels. Through layered functional optimization, biomechanical curve adaptation, and gradient material design, it achieves a synergistic effect of precise arch support, continuous mechanical transmission, stress dispersion, and dynamic cushioning, thereby improving the comfort and health of wearing high heels.

[0009] To achieve the above objectives, this utility model is implemented through the following technical solution: a novel midsole structure for high heels, comprising a midsole body, the midsole body comprising a forefoot and a heel, wherein an arch support strip is provided at the connection between the forefoot and the heel, the arch support strip is bent to connect the forefoot and the heel, and the arch support strip conforms to the physiological curve of the human foot arch.

[0010] Furthermore, the forefoot and heel are provided with an upper fixing layer and a lower fixing layer at their upper and lower ends. The upper fixing layer is used to enhance local support and prevent excessive deformation. The lower fixing layer is used to withstand the impact of the heel landing when walking, while maintaining softness. The end face of the lower fixing layer is provided with a connecting layer, which is used to smoothly connect different functional areas.

[0011] Furthermore, a support layer is provided between the midsole body and the lower fixing layer of the arch support strip, and the support layer adopts a fully soft design. Balancing softness and support, an elastic layer is provided at the upper end of the forefoot.

[0012] Furthermore, the support layer and the elastic layer adopt a gradient density transition design. The support layer has a higher density on the side closer to the core support strip of the arch to enhance torsional rigidity, while the elastic layer has a lower density on the side closer to the forefoot and the upper part of the heel to improve dynamic rebound performance during walking, thereby achieving uniform distribution of plantar pressure.

[0013] Furthermore, both the upper and lower fixing layers are integrated with the midsole body and the core arch support strip using a hot-press molding process. The surface of the upper fixing layer has a micro-convex texture to increase the friction positioning accuracy with the forefoot upper. The connecting layer edge of the lower fixing layer is treated with an arc chamfer to reduce the scraping noise between the sole and the ground when walking.

[0014] Furthermore, the connection between the forefoot, heel, and arch support strip adopts a rounded transition surface design with a radius of 3-5mm. This creates a continuous mechanical transmission surface in the transition area from the metatarsal region to the arch region of the midsole, reducing stress concentration in the plantar fascia and ankle joint during walking.

[0015] Furthermore, the total length of the midsole body is 226-252mm, the forefoot length accounts for 90-113mm of the total length of the midsole body, the heel length accounts for 123-139mm, the length of the arch support strip is 20%-25% of the foot length L, and the fitting angle with the physiological curve of the arch is 10°-15°.

[0016] Furthermore, the radius R of the arc transition surface is uniformly 3.5-4.5mm within the range of 35-40 yards (3.5mm for 35 yards, 4.5mm for 40 yards). Its transition area covers the line connecting the end of the metatarsal bone of the forefoot to the anterior edge of the calcaneus of the hindfoot, with a length of 5-7mm, to ensure the continuity of mechanical transmission from the metatarsal area to the arch area.

[0017] Furthermore, the core support strip for the arch is made of a rigid material, which is a medical-grade stainless steel and carbon fiber composite material. While meeting the physiological curve fit of the arch, the rigid material provides rigid support for the arch area to distribute walking pressure.

[0018] This utility model provides a novel midsole structure for high-heeled shoes, which has the following beneficial effects:

[0019] 1. Precisely adapts to the physiological curve of the foot arch, enhancing arch support:

[0020] By incorporating a core arch support strip at the junction of the midfoot and the forefoot and heel, conforming to the physiological curve of the human foot arch, and with its length and angle precisely designed to fit the arch, it effectively supports the weight distribution of the arch area, avoiding problems such as arch collapse and fatigue caused by insufficient arch support in traditional high heels. It is especially effective in protecting the arches of people with flat feet or high arches.

[0021] 2. Gradient density transition design optimizes plantar pressure distribution:

[0022] The gradient density transition structure between the support layer and the elastic layer ensures the required torsional rigidity in the arch area and enhances the dynamic rebound performance of the forefoot and heel areas, ultimately achieving a uniform distribution of plantar pressure and reducing the risk of pain or injury caused by local high pressure concentration.

[0023] 3. Multi-layered composite structure enhances overall stability and cushioning:

[0024] The upper fixing layer is integrated with the midsole body through hot pressing and features micro-convex textures to increase the friction positioning accuracy with the upper, effectively limiting excessive deformation of the midsole and improving the fit between the upper and the midsole. The lower fixing layer uses a soft material to withstand the impact of heel landing, and the curved chamfer design of the connecting layer provides both cushioning protection during walking and reduces the noise of the sole scraping against the ground, balancing comfort and quietness.

[0025] 4. Continuous mechanical conduction surfaces reduce the risk of sports injuries:

[0026] The rounded transition surface at the connection between the forefoot, heel, and core arch support bar covers the area from the end of the metatarsal bone to the anterior edge of the calcaneus, forming a continuous force transmission path. This avoids the stress concentration problem caused by right angles or abrupt curved surfaces in traditional structures, effectively reducing abnormal stress on the plantar fascia and ankle joint during walking and lowering the probability of sports injuries.

[0027] 5. Parametric sizing design improves adaptability and versatility:

[0028] The parametric design of the overall length of the midsole, the ratio of forefoot / rearfoot length, and the length of the arch support strip adapts to the needs of users with different foot lengths (such as common shoe sizes 35-40). By balancing personalized fit with the feasibility of mass production through a standardized size range, the product's target audience has been expanded. Attached Figure Description

[0029] To more clearly illustrate the embodiments of this utility model or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings in the following description are merely exemplary, and those skilled in the art can derive other embodiments based on the provided drawings without creative effort.

[0030] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0031] Figure 2 This is a plan view of the entire utility model;

[0032] Figure 3 This is a schematic diagram of the upper part of the entire utility model. Detailed Implementation

[0033] Exemplary embodiments will now be described in detail, examples of which are illustrated in the accompanying drawings. When the following description relates to the drawings, unless otherwise indicated, the same numerals in different drawings denote the same or similar elements. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with this disclosure. Rather, they are merely examples of apparatuses consistent with some aspects of this disclosure as detailed in the appended claims.

[0034] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model without creative effort are within the scope of protection of the present utility model.

[0035] Example 1 (Basic Functional High Heel Shoe Midsole Structure)

[0036] Suitable for everyday commuting. High heels (size 38, foot length approximately 235mm)

[0037] Structural parameters:

[0038] The total length of the midsole body 1 is 235mm, of which the forefoot 11 is 98mm long and the heel 2 is 137mm long.

[0039] The arch support bar 13 is 22% the length of the foot and conforms to the physiological curve of the arch at an angle of 12°. It is made of memory foam.

[0040] The upper and lower ends of the forefoot 11 and the heel 12 are respectively provided with an upper fixing layer 2 and a lower fixing layer 3. The upper fixing layer 2 is made of thermoplastic polyurethane hot pressing molding, with a thickness of 2mm and a honeycomb micro-convex texture with a height of 0.2mm on the surface to enhance friction with the forefoot upper. The lower fixing layer 3 is made of EVA foam material with a thickness of 3mm, and the edge of its connecting layer 31 is treated with an arc chamfer with a radius of 0.5mm to reduce the noise of friction with the ground when walking.

[0041] A support layer 4 is set between the arch support strip 13, the midsole body 1, and the lower fixing layer 3. It is made of fully soft PU foam with a thickness of 4mm. An elastic layer 5 is set at the upper end of the forefoot 11. It is made of supercritical foamed EVA with a thickness of 6mm.

[0042] The support layer 4 and the elastic layer 5 adopt a gradient density transition design: the density of the support layer 4 near the core arch support strip 13 is 0.5 g / cm³. 3 Gradually decreasing towards the toes to 0.3g / cm 3 The density of elastic layer 5, near the heel 12, is 0.25 g / cm³. 3 Gradually change towards the ball of the foot to 0.15g / cm 3 ;

[0043] The connection between the forefoot 11, the heel 12 and the core support bar of the arch is designed with a rounded transition surface with a radius of R = 4mm. The transition area covers the line connecting the end of the metatarsal bone to the anterior edge of the calcaneus, with a length of 6mm, to ensure the continuity of mechanical transmission.

[0044] Example 2 (Midsole Structure of Sports Support High Heels)

[0045] Suitable for: Light sports high heels (size 40, foot length approximately 250mm)

[0046] Structural parameters:

[0047] The total length of the midsole body 1 is 245mm, of which the forefoot 11 is 105mm long and the heel 12 is 140mm long.

[0048] The arch support bar 13 is 24% the length of the foot and conforms to the physiological curve of the arch at an angle of 15°. It uses a composite structure of TPU support sheet and memory foam.

[0049] Both the upper fixing layer 2 and the lower fixing layer 3 are made using a hot-pressing integrated molding process: the upper fixing layer 2 is a TPU + elastic fiber composite layer with a diamond-shaped texture on the surface to enhance the positioning accuracy of the shoe upper; the lower fixing layer 3 is a high-resilience EVA with a 0.3mm radius rounded chamfer on the edge of its connecting layer 31 to reduce ground impact noise during exercise.

[0050] The support layer 4 is located between the core arch support strip 13 and the lower fixation layer 3. It uses gradient density memory foam with a thickness of 5mm to balance softness and torsional rigidity. The upper elastic layer 5 of the forefoot 11 uses supercritical foamed PU with a thickness of 7mm to improve dynamic rebound performance.

[0051] Density transition between support layer 4 and elastic layer 5: The final density of support layer 4 near the forefoot is 0.6 g / cm³. 3 The initial density of elastic layer 5 near the heel is 0.25 g / cm³. 3 The density difference in the intermediate transition zone is controlled at 0.1 g / cm³. 3 Within this range, ensure even distribution of pressure on the soles of the feet;

[0052] The radius of the arc transition surface is R = 4.5mm (upper limit for size 40), and the length of the transition area is 7mm. It covers the line connecting the end of the metatarsal bone in the forefoot to the front edge of the calcaneus in the heel, reducing stress concentration in the metatarsal area and the arch area.

[0053] Example 3 (Midsole Structure of Comfortable and Cushioning High Heels)

[0054] Suitable for: High heels for prolonged standing (size 35, foot length approximately 225mm)

[0055] Structural parameters:

[0056] The total length of the midsole body 1 is 226mm (lower limit of size 35), of which the forefoot 11 is 90mm long and the heel 12 is 136mm long;

[0057] The arch support strip 13 is 20% the length of the foot and conforms to the physiological curve of the arch at an angle of 10°. It is made of soft silicone in one piece, which makes it fit the arch curve more closely.

[0058] The upper fixing layer 2 and the lower fixing layer 3 are integrally molded by hot pressing: the upper fixing layer 2 is a thermoplastic elastomer with a granular textured surface to increase friction with the thin shoe upper; the lower fixing layer 3 is a slow rebound sponge with a 0.6mm radius rounded chamfer on the edge of its connecting layer 31 to minimize scratch noise.

[0059] The support layer 4 is located between the core arch support strip 13 and the lower fixing layer 3. It is a gel pad with a fully soft design and a thickness of 3mm to distribute the pressure on the arch. The elastic layer 5 at the upper end of the forefoot 11 is made of memory foam with a thickness of 5mm to improve forefoot cushioning.

[0060] Density transition between support layer 4 and elastic layer 5: The density of support layer 4 near the arch is 0.4 g / cm³. 3 Gradually decreasing towards the toes to 0.25g / cm 3 The density of elastic layer 5 near the heel is 0.18 g / cm³. 3Gradually decreasing towards the ball of the foot to 0.12g / cm 3 Optimize the balance between dynamic rebound and static support;

[0061] The radius of the arc transition surface is R = 3.5mm (lower limit for size 35), and the length of the transition area is 5mm. It covers the line connecting the end of the metatarsal bone in the forefoot to the front edge of the calcaneus in the heel, ensuring the continuity of mechanical transmission between the metatarsals and the arch of the foot during long-term wear and reducing fatigue.

[0062] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A novel midsole substructure for high-heeled shoes, comprising a midsole body (1), wherein the midsole body (1) includes a forefoot (11) and a heel (12), characterized in that: The connection between the forefoot (11) and the heel (12) is provided with an arch support strip (13), which bends to connect the forefoot (11) and the heel (12) and conforms to the physiological curve of the human foot arch.

2. The novel high-heeled shoe midsole structure according to claim 1, characterized in that: The forefoot (11) and heel (12) are provided with an upper fixing layer (2) and a lower fixing layer (3) at their upper and lower ends. The upper fixing layer (2) is used to enhance local support and avoid excessive deformation. The lower fixing layer (3) is used to withstand the impact force of the heel landing when walking, while maintaining softness. The end face of the lower fixing layer (3) is provided with a connecting layer (31). The connecting layer (31) is used to smoothly connect different functional areas.

3. The novel midsole structure of a high-heeled shoe according to claim 1, characterized in that: The arch support bar (13) has a support layer (4) between the midsole body (1) and the lower fixed layer (3). The support layer (4) adopts a fully soft design, taking into account both softness and support. The upper end of the forefoot (11) has an elastic layer (5).

4. The novel midsole structure of a high-heeled shoe according to claim 3, characterized in that: The support layer (4) and the elastic layer (5) adopt a gradient density transition design. The support layer (4) has a higher density on the side closer to the core support strip (13) of the arch to enhance torsional rigidity. The elastic layer (5) has a lower density on the side closer to the forefoot (11) and the upper part of the heel (12) to improve the dynamic rebound performance during walking, thereby achieving uniform distribution of plantar pressure.

5. The novel midsole structure of a high-heeled shoe according to claim 2, characterized in that: The upper fixing layer (2) and the lower fixing layer (3) are both integrated with the midsole body (1) and the arch support strip (13) using a hot-pressing integrated molding process. The upper fixing layer (2) has a micro-convex texture on its surface to increase the friction positioning accuracy with the forefoot upper. The connecting layer (31) of the lower fixing layer (3) has an arc chamfered edge to reduce the scraping noise between the sole and the ground when walking.

6. The novel midsole structure of a high-heeled shoe according to claim 1, characterized in that: The connection between the forefoot (11), heel (12) and the core support strip of the arch (13) adopts a circular arc transition surface design with a radius of 3-5mm, so that the midsole body (1) forms a continuous mechanical transmission surface in the transition area from the metatarsal area to the arch area, reducing the stress concentration phenomenon of the plantar fascia and ankle joint during walking.

7. The novel high-heeled shoe midsole structure according to claim 1, characterized in that: The total length of the midsole body (1) is 226-252mm, the length of the forefoot (11) is 90-113mm of the total length of the midsole body, the length of the heel (12) is 123-139mm, the length of the arch support strip (13) is 20%-25% of the foot length L, and the fitting angle with the physiological curve of the arch is 10°-15°.

8. The novel midsole structure of a high-heeled shoe according to claim 6, characterized in that: The radius R of the arc transition surface is uniformly 3.5-4.5mm in the range of 35-40 yards, 3.5mm in 35 yards and 4.5mm in 40 yards. Its transition area covers the line connecting the end of the metatarsal bone of the forefoot (11) to the anterior edge of the calcaneus of the hindfoot (12), with a length of 5-7mm, to ensure the continuity of mechanical transmission from the metatarsal area to the arch area.

9. The novel midsole structure of a high-heeled shoe according to claim 1, characterized in that: The core support strip (13) of the foot arch is made of a rigid material, which is a medical-grade stainless steel and carbon fiber composite material. While meeting the physiological curve fit of the foot arch, the rigid material provides rigid support for the foot arch area to distribute walking pressure.

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