A cushioning insole for enhancing arch support

Abstract

The utility model relates to insole technical field, propose a kind of slow pressure insole for solving arch collapse problem of reinforcing arch support force, including surface layer, support layer, bottom layer, the support layer is set between the surface layer and bottom layer by calcaneus of foot extension towards metatarsal bone site, the support layer is thermoplastic material, the support layer is located in the lower concave of central portion of calcaneus, and the lower concave wrapping portion of two side arc shapes is upwards, and support layer is located in the tarsometatarsal joint department between calcaneus and metatarsal bone and is upwards arched and is presented as upper arch portion.

Description

Technical Field

[0001] This utility model relates to the field of insole technology, and in particular to a pressure-relieving insole that strengthens arch support. Background Technology

[0002] A normal arch acts like a spring, cushioning ground reaction forces, distributing body weight, maintaining balance, and providing power for activities like walking and running. However, due to genetic factors, developmental abnormalities, prolonged weight-bearing, and trauma, flat arches are a relatively common foot deformity that poses numerous health risks. In patients with flat arches, the arch is reduced or even absent, and the medial longitudinal arch collapses, causing uneven pressure distribution. Prolonged exposure to this abnormal stress state can easily lead to damage to the foot muscles and ligaments due to overstretching and fatigue, resulting in inflammatory diseases such as plantar fasciitis and Achilles tendonitis. Patients typically experience pain in the sole, heel, or medial side of the foot, especially after prolonged walking, standing, or exercise. Flat arches also reduce athletic performance, affecting running, jumping, and other athletic abilities, increasing the risk of sports injuries. Because the arch's cushioning function is weakened, ground impact cannot be effectively absorbed and dispersed during exercise, instead being directly transmitted upwards to the lower limb joints and spine, increasing the risk of injury. The arch of the foot is an upward-curving arch-shaped structure formed by the connection of the tarsal and metatarsal bones through ligaments, joints, and muscles, playing a crucial role in human movement and standing. The arch shape varies significantly from person to person, with different degrees of flatness. Conventional insoles, made of materials like latex, EVA, and PU, are soft, comfortable, and resilient for normal arches, but unsuitable for people with flat feet. They cannot support the collapsed arch, nor can they compensate for or eliminate the strain on the foot muscles and ligaments; in fact, their softness may exacerbate the strain on the arch, increasing foot fatigue.

[0003] Therefore, this design was developed to increase the support of the insole for flat arches. Utility Model Content

[0004] Therefore, in view of the above problems, this utility model proposes a pressure-relieving insole that strengthens arch support to solve the problem of arch collapse.

[0005] To solve the above-mentioned technical problems, the solution adopted by this utility model is as follows: a pressure-relieving insole that strengthens the arch support, comprising a surface layer, a support layer, and a bottom layer. The support layer extends from the calcaneus to the metatarsal region and is disposed between the surface layer and the bottom layer. The support layer is made of thermoplastic material. The support layer is located in the calcaneus region and has a concave portion in the middle and an upward arc on both sides. The support layer is located at the tarsometatarsal joint between the calcaneus and the metatarsal bones and arches upward to form an upper arch.

[0006] A further improvement is that an elastic layer is provided between the surface layer and the support layer.

[0007] A further improvement is that a pressure-relieving part is provided between the elastic layer and the surface layer in the forefoot and / or heel area.

[0008] A further improvement is that the pressure-relieving part is a protrusion formed by thickening the elastic layer at the forefoot and / or heel.

[0009] A further improvement is that the pressure-relieving part includes an embedded groove formed by the elastic layer in the forefoot and / or heel, and a pressure-relieving block is embedded in the embedded groove.

[0010] A further improvement is that the material of the pressure-reducing block is ACF.

[0011] A further improvement is that the material of the support layer is PA or LDPE.

[0012] A further improvement is that the material of the elastic layer is silicone, latex, memory foam, EVA, or TPU.

[0013] A further improvement is that the surface layer is a knitted surface layer, and the knitted surface layer is uniformly provided with ventilation holes and / or anti-slip strips.

[0014] A further improvement is that the bottom layer is a carbon fiber woven fabric layer.

[0015] By adopting the aforementioned technical solution, the beneficial effects of this utility model are:

[0016] 1. In this case, a support layer is set between the top and bottom layers. Addressing the issue of reduced arch curvature and medial longitudinal arch collapse in patients with flat feet, this support layer extends from the calcaneus to the metatarsal region, effectively supporting the foot without affecting normal walking. The support layer is located in the calcaneus region, with a concave center and upward-curving sides, enveloping the entire heel and providing sufficient support to effectively prevent heel rollover. The support layer arches upwards at the tarsometatarsal joint area, a unique structural design that greatly improves the fit between the support layer and the sole of the foot, making it suitable for individuals with varying degrees of flatness. After the support layer is heated and softened, the user presses their foot onto the softened support layer. The support layer hardens again, and its curvature matches the curvature of the user's arch. This allows the insole to conform to the user's foot, providing strong support for a flat arch, compensating for and eliminating the stretching of foot muscles and ligaments, reducing the risk of inflammatory diseases such as plantar fasciitis and Achilles tendonitis caused by uneven pressure on the arch, and relieving pain in the sole, heel, or inner side of the foot.

[0017] 2. The elastic layer in this case increases the overall thickness and elasticity of the insole, improving the comfort of stepping on the insole. Furthermore, pressure-absorbing parts are set on the forefoot and heel of the elastic layer to absorb more pressure, which is beneficial for targeted shock absorption and cushioning of the high-pressure forefoot and heel, thus improving the comfort of stepping on the insole.

[0018] Option 1 for the pressure-relief section involves thickening the elastic layer at the forefoot and heel to form raised sections. This option has a simple structure, is easy to process and manufacture, and can control manufacturing costs.

[0019] Option 2 for the pressure-relief section involves setting grooves in the corresponding parts of the elastic layer and bonding in ACF pressure-relief blocks. ACF material has both high energy absorption and fatigue resistance, which can effectively relieve the pressure of stepping on the forefoot and heel, reduce the transmission of ground impact force upward to the lower limb joints and spine, reduce the probability of sports injuries, improve human athletic performance, and improve running, jumping and other sports abilities.

[0020] 3. The support layer is made of PA or LDPE thermoplastic material, which can be softened by heat at a temperature above 90 degrees Celsius. Users can soften it themselves using readily available tools such as boiling water or a heater, without the need for professional equipment or personnel. This is convenient and quick, and the fit can be customized according to the user's arch, improving the personalization and ease of use of the insole.

[0021] 4. The sole is made of carbon fiber woven fabric. The carbon fiber woven fabric has a certain degree of hardness, which helps to reinforce the support layer and enhance its support strength. Attached Figure Description

[0022] Figure 1 This is a front layer diagram of a pressure-relieving insole that enhances arch support according to an embodiment of this utility model.

[0023] Figure 2 This is a schematic diagram of the back layer of a pressure-relieving insole that enhances arch support according to an embodiment of this utility model.

[0024] Figure 3-5 This is a schematic diagram of the elastic layer and the pressure-relieving part in a pressure-relieving insole that enhances arch support according to an embodiment of this utility model. Detailed Implementation

[0025] The present invention will now be further described in conjunction with the accompanying drawings and specific embodiments.

[0026] refer to Figures 1 to 5This utility model discloses a pressure-relieving insole that enhances arch support, comprising a surface layer 10, a support layer 11, and a bottom layer 12, which are glued together. The surface layer 10 is a knitted surface layer made of polyester fiber, nylon, or cotton fabric. The knitted surface layer 10 has evenly distributed ventilation holes 13 and / or anti-slip strips 14, which are soft plastic strips. The bottom layer 12 is a carbon fiber woven fabric layer.

[0027] The support layer 11 extends from the calcaneus (heel bone) of the foot towards the metatarsal bone and is disposed between the surface layer 10 and the bottom layer 12. The support layer 11 is made of thermoplastic material, specifically PA or LDPE. PA and LDPE materials can be softened by heat at temperatures above 90 degrees Celsius. The support layer 11 can be softened by heating with boiling water or a heater, allowing users to easily perform the softening operation using readily available tools.

[0028] The support layer 11 is located in the calcaneus and is a concave wrapping part 15 with a central depression and two upward arcs on both sides. The support layer 11 is located at the tarsometatarsal joint between the calcaneus and the metatarsal bones and arches upward to form an upper arch 16. This improves the fit between the support layer 11 and the sole of the foot, which is beneficial for people with different degrees of flatness of the foot arch. After the support layer 11 is heated and softened, the sole of the foot is in a downward pressing state when it comes into contact with the support layer 11.

[0029] An elastic layer 17 for improving stepping comfort is bonded between the surface layer 10 and the support layer 11. The elastic layer 17 is made of silicone, latex, memory foam, EVA, or TPU.

[0030] Between the elastic layer and the surface layer 10, a pressure-relieving part is provided in the forefoot and / or heel area to alleviate the pressure of stepping on the forefoot and heel.

[0031] Pressure-relief section option one, such as Figure 3 As shown, the pressure-relieving part is a protrusion 18 formed by thickening the elastic layer 17 at the forefoot and / or heel.

[0032] Option 2 for the pressure relief section, such as Figure 4 , 5 As shown, the pressure-relieving part includes an embedded groove 19 formed by the elastic layer 17 in the forefoot and / or heel area, and a pressure-relieving block 20 is glued and embedded in the embedded groove 19. The material of the pressure-relieving block 20 is ACF.

[0033] ACF is an abbreviation for Artificial Cartilage Foam, a metamaterial developed based on biomimetic principles. It was developed by the team of Wang Bowei, the founder of the ACF Laboratory of Linzhi Technology Group. It is an advanced high-performance vibration damping and isolation material with high energy absorption and fatigue resistance.

[0034] A method for using a pressure-relieving insole that enhances arch support:

[0035] The support layer 11 inside the insole is heated and softened. After the support layer 11 is fully softened, the insole is quickly inserted into the shoe. The user puts on socks, quickly puts on the shoes, stands up and steps on the insole until the support layer 11 cools down and hardens again, so that the insole fits the user's foot and provides support for the flat arch of the foot, thereby relieving and relaxing the ligaments, joints and muscles of the foot.

[0036] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions above are only illustrative of the principles of this utility model. Various changes and modifications may be made to this utility model without departing from the spirit and scope of this utility model. All such changes and modifications fall within the scope of protection of this utility model as defined by the appended claims and their equivalents.

Claims

1. A pressure-relieving insole that enhances arch support, comprising a surface layer, a support layer, and a bottom layer, characterized in that: The support layer extends from the calcaneus to the metatarsal region and is disposed between the surface layer and the bottom layer. The support layer is made of thermoplastic material. The support layer is located in the calcaneus region and is a concave part with a central depression and two upward arcs on both sides. The support layer is located at the tarsometatarsal joint between the calcaneus and the metatarsal bones and is arched upward to form an upper arch.

2. The pressure-relieving insole for enhancing arch support according to claim 1, characterized in that: An elastic layer is provided between the surface layer and the support layer.

3. The pressure-relieving insole for enhancing arch support according to claim 2, characterized in that: A pressure-relieving part is provided between the elastic layer and the surface layer in the forefoot and / or heel area.

4. The pressure-relieving insole for enhancing arch support according to claim 3, characterized in that: The pressure-relieving part is a protrusion formed by thickening the elastic layer at the forefoot and / or heel.

5. The pressure-relieving insole for enhancing arch support according to claim 3, characterized in that: The pressure-relieving part includes an embedded groove formed by the elastic layer in the forefoot and / or heel, and a pressure-relieving block is embedded in the embedded groove.

6. The pressure-relieving insole for enhancing arch support according to claim 5, characterized in that: The material of the pressure-reducing block is ACF.

7. A pressure-relieving insole for enhancing arch support according to any one of claims 1-6, characterized in that: The material of the support layer is PA or LDPE.

8. A pressure-relieving insole for enhancing arch support according to any one of claims 2-6, characterized in that: The elastic layer is made of silicone, latex, memory foam, EVA, or TPU.

9. A pressure-relieving insole for enhancing arch support according to any one of claims 1-6, characterized in that: The surface layer is a knitted surface layer, and the knitted surface layer is uniformly provided with ventilation holes and / or anti-slip strips.

10. A pressure-relieving insole for enhancing arch support according to any one of claims 1-6, characterized in that: The bottom layer is a carbon fiber woven fabric layer.

Images