A multifunctional insole

Abstract

This application provides a multifunctional insole, including a fixing layer and a replacement insole. The fixing layer is sewn to the insole body and the inner sole of the shoe, solving the problem of displacement during walking and ensuring a stable fit between the foot and the insole. The Velcro at the top of the fixing layer and the adhesive layer at the bottom of the replacement insole form a detachable structure, facilitating the removal and cleaning of the replacement insole to maintain shoe hygiene. It also allows users to flexibly replace the replacement insole with one offering different functions such as height enhancement, warmth, breathability, and antibacterial properties, depending on their needs for daily commuting, sports, or special occasions. The combination of the forefoot cushioning pad and air cushion effectively reduces the impact force on the forefoot and heel during walking and jumping. At the arch, the insole body and support layer work together to provide precise support and resist torsion. The side wing pads generate counter-support when the foot tilts to the sides, limiting excessive inward or outward pronation and further enhancing stability during use.

Description

Technical Field

[0001] This application relates to the field of insole technology, and more particularly to a multifunctional insole. Background Technology

[0002] Insoles, as important accessories in footwear products used to improve wearing comfort, protect feet, and maintain the environment inside the shoe, are usually placed inside the shoe to cushion foot pressure and absorb moisture and sweat. However, under current technology, common insoles have obvious shortcomings.

[0003] The existing technology has the following problems: Insole under the existing technology is prone to displacement during walking and exercise, which leads to foot discomfort and even affects walking stability. In order to solve the displacement problem, some manufacturers fix the insole to the inside of the shoe, but it is difficult to remove and wash it separately, making the cleaning operation cumbersome and easily causing damage to the shoe upper and sole due to frequent washing.

[0004] Furthermore, traditional insoles have limited functionality and cannot meet the diverse needs of users for flexible adjustments based on different scenarios, such as the need for easy cleaning during daily commutes, the need for shock absorption and torsion resistance during exercise, and the need for height increase and warmth in special occasions. They cannot simultaneously provide a multi-faceted user experience that includes preventing slippage, easy cleaning, and customizable functions, causing many inconveniences for users. Utility Model Content

[0005] The purpose of this invention is to provide a multifunctional insole to solve the above-mentioned problems.

[0006] The technical solution of this application is implemented as follows:

[0007] This application provides a multifunctional insole, including a fixing layer and a replacement insole. The fixing layer is fixedly connected to the inner bottom of the shoe, and the top of the fixing layer is detachably connected to the replacement insole. The fixing layer includes a pad body, which is fixed to the inner bottom of the shoe by stitching. The top surface of the pad body is provided with Velcro, and is detachably connected to the replacement insole via Velcro. The bottom front end of the pad body has a first mounting groove, through which a cushioning pad is fitted. The bottom of the pad body protrudes upward at the position corresponding to the arch of the foot to form a support part. A support layer is fixedly installed at the bottom of the support part. The bottom rear end of the pad body has a second mounting groove, through which an air cushion is fitted.

[0008] In one embodiment, the bottom end face of the replacement pad is provided with an adhesive layer adapted to the hook and loop fastener. The adhesive layer is a hook surface layer that can engage with the hook and loop fastener. The replacement pad is detachably installed on the top surface of the pad body through the engagement of the adhesive layer and the hook and loop fastener.

[0009] In one embodiment, a side wing pad is sewn along the outer edge of the middle section of the top surface of the pad body, and the top surface of the side wing pad is higher than the top surface of the pad body.

[0010] In one embodiment, the support layer is a carbon fiber plate adapted to the arc shape of the support portion. The carbon fiber plate is fixedly installed at the bottom of the support portion by adhesive bonding, and the edge of the carbon fiber plate is flush with the contour of the bottom of the support portion.

[0011] In one embodiment, the outer side of the support layer is covered by a wrapping layer, which covers the side surface and part of the bottom edge of the support layer along its outer contour, and the left and right edges of the wrapping layer extend to the outer edges of the left and right sides of the pad and are fixedly connected thereto.

[0012] In one embodiment, the cushioning pad includes an airbag layer adapted to be embedded in a first mounting groove, and at least two cushioning strips are spaced apart along the length of the airbag layer.

[0013] In one embodiment, the buffer strip has a wavy structure, with its two ends fixedly connected to the inner wall of the airbag layer by hot-melt welding, and the crest and trough of the buffer strip are fixed to the inner top and inner bottom surfaces of the airbag layer by adhesive application.

[0014] The advantages or beneficial effects of the above technical solutions include at least the following:

[0015] This invention solves the problem of traditional insoles shifting during walking by fixing the insole to the inner bottom of the shoe through the stitching of the fixing layer, thus ensuring the stability of the fit between the foot and the insole.

[0016] The Velcro on the top of the fixed layer and the adhesive layer on the bottom of the replacement pad form a detachable structure, which not only makes it easy to remove the replacement pad separately for cleaning to keep the inside of the shoe clean, but also allows users to flexibly replace the replacement pad with different functions such as height increase, warmth, breathability, and antibacterial according to their needs for daily commuting, sports, special occasions, etc., realizing diversified customization of functions;

[0017] The combination of the forefoot cushioning pad and air cushion effectively reduces the impact force on the forefoot and heel during walking and jumping, improving comfort; at the arch, the pad and support layer work together to provide precise support and resist torsion; while the side wing pads generate reverse support force when the foot tilts to the sides, limiting excessive inward or outward pronation, further enhancing stability during use. Attached Figure Description

[0018] The accompanying drawings illustrate exemplary embodiments of the present application and, together with the description thereof, serve to explain the principles of the present application. These drawings are included to provide a further understanding of the present application and are incorporated in and constitute a part of this specification.

[0019] Figure 1 A schematic diagram of the overall structure of an embodiment of this application is shown;

[0020] Figure 2 A schematic diagram of the top structure of the fixed layer according to an embodiment of this application is shown;

[0021] Figure 3 A schematic diagram of the bottom structure of the fixing layer in an embodiment of this application is shown;

[0022] Figure 4 A schematic diagram of the structure of the buffer pad according to an embodiment of this application is shown.

[0023] Reference numerals: Fixing layer-1, Replacement pad-2, Pad body-11, Velcro-12, First mounting slot-13, Buffer pad-14, Support layer-15, Second mounting slot-16, Air cushion-17, Side wing pad-18, Wrapping layer-19, Airbag layer-141, Buffer strip-142. Detailed Implementation

[0024] Embodiments of this application will now be described in more detail with reference to the accompanying drawings. While some embodiments of this application are shown in the drawings, it should be understood that this application can be implemented in various forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided to provide a more thorough and complete understanding of this application. It should be understood that the drawings and embodiments of this application are for illustrative purposes only and are not intended to limit the scope of protection of this application.

[0025] It should be noted that, where there is no conflict, the embodiments and features described in this application can be combined with each other. This application will now be described in detail with reference to the accompanying drawings and embodiments.

[0026] It should be understood that the term "comprising" and its variations as used herein are open-ended, meaning "including but not limited to". The term "based on" means "at least partially based on". The term "one embodiment" means "at least one embodiment"; the term "another embodiment" means "at least one additional embodiment"; the term "some embodiments" means "at least some embodiments". Definitions of other terms will be given in the following description. It should be noted that the concepts of "first", "second", etc., mentioned in this application are used only to distinguish different devices, modules, or units, and are not intended to limit the order of functions performed by these devices, modules, or units or their interdependencies.

[0027] It should be noted that the terms "a" and "several" used in this application are illustrative rather than restrictive, and those skilled in the art should understand that, unless otherwise expressly indicated in the context, they should be understood as "one or more".

[0028] The names of the messages or information exchanged between multiple devices in the embodiments of this application are for illustrative purposes only and are not intended to limit the scope of these messages or information.

[0029] Reference Figure 1 A multifunctional insole includes a fixed layer 1 and a replaceable insole 2. The fixed layer 1 is fixedly connected to the bottom of the shoe. The fixed connection can prevent the insole from shifting during walking and exercise, ensuring stability and consistent foot feel during use. The top of the fixed layer 1 is detachably connected to the replaceable insole 2. The detachable connection makes it easy to remove the replaceable insole 2 for cleaning, keeping the inside of the shoe hygienic. It also allows users to flexibly replace the insole with different functions, such as height increase, warmth, breathability, and antibacterial properties, according to daily commuting, sports, and special occasions.

[0030] In one embodiment, reference is made to Figures 2-3 The fixing layer 1 includes a pad 11, which serves as the basic carrier and uses an elastic fabric compatible with the shoe upper material. The pad 11 is fixed to the bottom of the shoe by stitching, which can effectively avoid the problem of displacement caused by movement of traditional insoles and ensure the stability of the fit between the foot and the insole when walking or exercising.

[0031] When sewing, first lay the pad 11 flat on the bottom of the shoe, align the forefoot, heel and the inner contour of the shoe, and sew it to the inside of the shoe upper with needle and thread along the pad 11 5-8mm from the edge.

[0032] The top surface of the pad 11 is provided with Velcro 12, and it is detachably connected to the replacement pad 2 through Velcro 12. Velcro 12 and the adhesive layer in the replacement pad 2 form a detachable connection structure, which enables quick replacement of the replacement pad 2 and facilitates separate cleaning of the replacement pad to maintain hygiene. The mechanical interlocking ensures the connection strength and prevents the replacement pad 2 from shifting during use.

[0033] The bottom front end of the pad body 11 has a first mounting groove 13, and a buffer pad 14 is fitted into the first mounting groove 13. The buffer pad 14 is used to absorb energy and cushion the forefoot when walking or jumping. During installation, polyurethane structural adhesive is applied to the first mounting groove 13, and then the buffer pad 14 is embedded into the groove and pressed for 30 seconds. After standing for 24 hours for the adhesive to cure, the installation is completed.

[0034] The bottom of the pad 11 protrudes upwards at the position of the human foot arch to form a support part. A support layer 15 is fixedly installed at the bottom of the support part. The support part is a protruding structure integrally formed by the pad 11. By setting the support layer 15, the arch of the foot can be effectively supported. And through the hardness of the support layer 15 itself, it can play an anti-torsion role during exercise.

[0035] The bottom end of the pad body 11 is provided with a second mounting groove 16, and an air cushion 17 is fitted into the second mounting groove 16. The air cushion 17 is used to absorb the impact received by the heel when walking or jumping.

[0036] During installation, apply polyurethane structural adhesive to the second mounting groove 16, then insert the air cushion 17 into the groove and press for 30 seconds. Let it stand for 14 hours to allow the adhesive to cure, and the installation is complete.

[0037] Among them, the bottom end face of the replacement pad 2 is provided with an adhesive layer that is compatible with the hook and loop fastener 12. The adhesive layer is a hook surface layer that can engage with the hook and loop fastener 12. The replacement pad 2 is detachably installed on the top surface of the pad body 11 through the engagement of the adhesive layer with the hook and loop fastener 12.

[0038] The bottom end face of the replacement pad 2 is bonded with an adhesive layer by hot melt adhesive. The adhesive layer is a 2cm wide nylon hook-and-loop fabric, and the Velcro 12 is a nylon fleece fabric. The back is coated with EVA hot melt adhesive, heated and pressurized for 10 seconds for initial fixation, and then sewn along the edge to fix it to the top face of the pad body 11.

[0039] During installation, align the heel position and press from the heel towards the toes. The adhesive layer and Velcro 12 will form a mechanical engagement. To remove, lift from the toes to complete the removal.

[0040] Among them, the middle section of the outer edge of the top surface of the pad 11 is sewn with a side wing pad 18 along its edge contour, and its top surface is higher than the top surface of the pad 11.

[0041] The side wing pads 18 are sewn along the top surface of the pad body 11 to the edges corresponding to the middle of the foot. The side wing pads 18 are used to support the middle of the foot. When the foot tilts to the sides, the side wing pads 18 will generate a reverse support force to limit excessive inward or outward pronation of the foot.

[0042] In one embodiment, reference is made to Figure 3 The support layer 15 is a carbon fiber plate that is adapted to the arc shape of the support part. The carbon fiber plate is fixedly installed at the bottom of the support part by adhesive bonding, and the edge of the carbon fiber plate is flush with the outline of the bottom of the support part.

[0043] The carbon fiber support layer 15 provides precise upward support for the arch of the foot, preventing excessive collapse of the arch during walking or exercise. It also reduces abnormal twisting of the sides of the arch during foot twisting movements, thus lowering the risk of ankle injury.

[0044] The outer side of the support layer 15 is covered by a wrapping layer 19. The wrapping layer 19 covers the side and part of the bottom edge of the support layer 15 along its outer contour. The left and right edges of the wrapping layer 19 extend to the outer edges of the left and right sides of the pad body 11 and are fixedly connected to them. The wrapping layer 19 is used to separate the support layer 15 and the sole, to avoid the wear of the sole caused by direct friction between the hard carbon fiber and the sole, and to tighten the support layer 15 to reduce the micro-deformation of the support layer 15 caused by vibration.

[0045] The wrapping layer 19 is made of nylon elastic fabric, cut and shaped along the outer contour of the support layer 15;

[0046] During installation, the nylon elastic fabric is attached to the outer contour of the support layer 15 and bonded with hot melt adhesive in dots. The left and right edges of the wrapping layer 19 extend outward to form connecting ear pieces, which are then fixed to the left and right outer edges of the pad 11 by double-thread chain stitching.

[0047] In one embodiment, reference is made to Figure 4 The cushioning pad 14 includes an airbag layer 141, which is fitted into the first mounting groove 13. At least two cushioning strips 142 are spaced apart along the length of the airbag layer 141. The airbag layer 141 is used to absorb the impact force when the forefoot lands. The cushioning strips 142 deform as the airbag is compressed, and the crests and troughs squeeze each other. The impact force is further absorbed through the elastic deformation of the material to ensure comfort.

[0048] In this embodiment, three buffer strips 142 are spaced apart along the length of the airbag layer 141. The material is EVA foam. The three buffer strips 142 can more evenly bear the impact force when the forefoot lands, and the elastic recovery of the EVA material can better absorb the impact force.

[0049] The buffer strip 142 has a wavy structure, which allows the buffer strip 142 to stretch along its length when under pressure, thus working better with the airbag layer 141 to achieve a better cushioning effect. The two ends of the buffer strip 142 are fixedly connected to the inner wall of the airbag layer 141 by hot-melt welding, and the crests and troughs of the buffer strip 142 are fixed to the inner top and inner bottom surfaces of the airbag layer 141 by adhesive application.

[0050] During installation, apply TPU hot melt adhesive to both ends of the buffer strip 142, align it with the inner wall of the airbag layer 141, press it with a hot press head for 3 seconds, and then apply water-based polyurethane adhesive to the top of each crest and the bottom of each trough. After it dries naturally, the installation is complete.

[0051] Working principle:

[0052] The fixing layer 1 is fixed to the insole by stitching the pad body 11 to the bottom of the shoe to prevent the insole from shifting. The Velcro 12 on the top surface of the pad body 11 engages with the hook-and-loop adhesive layer on the bottom of the replacement pad 2, which allows for quick installation and removal of the replacement pad 2, making it easy to clean or replace with models that have height-increasing or warmth-retaining functions.

[0053] Meanwhile, in the cushioning pad 14 in the forefoot area, the airbag layer 141 is embedded in the first mounting groove 13, and the three spaced wave-shaped EVA buffer strips 142 inside can deform with the airbag compression, and buffer the forefoot impact force through gas diffusion and material elasticity dual energy absorption.

[0054] The heel air cushion 17 is embedded in the second mounting groove 16 to absorb the impact of landing on the heel, forming a double protection with the forefoot cushion.

[0055] At the arch position, the one-piece molded support part of the pad body 11, together with the bottom arc-shaped carbon fiber support layer 15, provides precise upward support and resists torsion. The outer wrapping layer 19 not only isolates the carbon fiber support layer 15 from the sole to prevent wear, but also reinforces the support layer 15 by stitching the ear pieces to reduce deformation.

[0056] The side wing pads 18 along the outer edge of the middle section of the pad 11 generate a reverse support force when the feet tilt to the sides, limiting excessive inward or outward rolling.

[0057] In the description of this application, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application.

[0058] Those skilled in the art should understand that the above embodiments are merely for illustrative purposes and are not intended to limit the scope of this application. Those skilled in the art can make other changes or modifications based on the above disclosure, and these changes or modifications still fall within the scope of this application.

Claims

1. A multifunctional insole, characterized in that: It includes a fixing layer (1) and a replacement pad (2), wherein the fixing layer (1) is fixedly connected to the bottom of the shoe, and the top of the fixing layer (1) is detachably connected to the replacement pad (2); The fixing layer (1) includes a pad (11), which is fixed to the bottom of the shoe by stitching. The top surface of the pad (11) is provided with Velcro (12) and is detachably connected to the replacement pad (2) through Velcro (12). The bottom front end of the pad (11) is provided with a first mounting groove (13) and a cushioning pad (14) is fitted through the first mounting groove (13). The bottom of the pad (11) protrudes upward to form a support part corresponding to the arch of the human foot. A support layer (15) is fixedly installed at the bottom of the support part. The bottom tail end of the pad (11) is provided with a second mounting groove (16) and an air cushion (17) is fitted through the second mounting groove (16).

2. The multifunctional insole according to claim 1, characterized in that: The bottom end face of the replacement pad (2) is provided with an adhesive layer that is compatible with the Velcro (12). The adhesive layer is a hook surface layer that can engage with the Velcro (12). The replacement pad (2) is detachably installed on the top surface of the pad body (11) through the engagement of the adhesive layer with the Velcro (12).

3. The multifunctional insole according to claim 1, characterized in that: The outer edge of the middle section of the top surface of the pad (11) is stitched with a side wing pad (18) along its edge contour, and its top surface is higher than the top surface of the pad (11).

4. The multifunctional insole according to claim 1, characterized in that: The support layer (15) is a carbon fiber plate that is adapted to the arc shape of the support part. The carbon fiber plate is fixedly installed at the bottom of the support part by adhesive bonding, and the edge of the carbon fiber plate is flush with the outline of the bottom of the support part.

5. The multifunctional insole according to claim 4, characterized in that: The support layer (15) is covered by a wrapping layer (19) on the outside. The wrapping layer (19) covers the side and part of the bottom edge of the support layer (15) along the outer contour of the support layer (15), and the left and right edges of the wrapping layer (19) extend to the outer edges of the left and right sides of the pad (11) and are fixedly connected to them.

6. The multifunctional insole according to claim 1, characterized in that: The buffer pad (14) includes an airbag layer (141), which is adapted to be embedded in the first mounting groove (13), and at least two buffer strips (142) are provided at intervals along its length inside the airbag layer (141).

7. The multifunctional insole according to claim 6, characterized in that: The buffer strip (142) has a wave-shaped structure. Its two ends are fixedly connected to the inner wall of the airbag layer (141) by hot-melt welding. The peaks and troughs of the buffer strip (142) are fixed to the inner top and inner bottom surfaces of the airbag layer (141) by adhesive application.

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