Double-hardness heel supporting structure and shoes thereof

Abstract

The double-hardness heel supporting structure comprises a supporting portion and a portion easy to put on and take off, the outer contour of the supporting portion is matched with the radian of the inner cavity face of a shoe heel, the lower end of the portion easy to put on and take off is connected with the supporting portion, and the upper end of the portion easy to put on and take off obliquely extends away from an upper. A heel guiding area with an arc face is formed on the top face of the supporting part, the hardness of the supporting part is larger than that of the easy-to-wear-and-take-off part, and the easy-to-wear-and-take-off part recovers to the original shape after being stressed and deformed. Through differential hardness design and static rigid support provided by the supporting part, the heelpiece is kept in a stable posture and prevented from shaking abnormally during walking and movement, and by utilizing the characteristics of cambered surface guide and elastic deformation of the easy-to-put-on and take-off part, the shoe opening is automatically opened when the heelpiece is treaded, so that the heelpiece automatically slides into the shoe conveniently, and the structure is reset after putting on and taking off; the heel is kept stable, the rear warped part of the shoe is not prone to deformation, the shoe shape is more attractive, static wearing comfort and dynamic movement protection are both considered, and hand lifting is not needed in the wearing and taking-off process.

Description

A dual-hardness heel support structure and its shoe Technical Field

[0001] This utility model relates to the field of footwear accessories technology, specifically a dual-hardness heel support structure and the corresponding shoe. Background Technology

[0002] Currently, dual-hardness heel support structures in footwear primarily focus on foot stability and comfort. Traditional dual-hardness heel support structures often use materials with a single hardness, making it difficult to simultaneously meet the needs for rigid heel support and ease of on and off. While high-hardness materials can stabilize the heel, they also create significant friction between the heel and the shoe opening during on and off, which is particularly unfriendly to the elderly and those fatigued after exercise. Low-hardness materials, although soft and easy to wear, lack rigid support and are prone to heel pronation / supination, increasing the risk of sports injuries.

[0003] Some products incorporate a soft support structure at the heel for ease of on and off. However, this often sacrifices heel support, leading to instability and foot wobbling during exercise or prolonged walking, increasing the risk of injury. Conversely, heel structures prioritizing support often use overly rigid materials, creating significant frictional resistance during on / off, making the process cumbersome and laborious, failing to achieve the "slip-on" hands-free experience, and diminishing the user's wearing experience. Therefore, designing a dual-rigidity heel support structure that provides stable heel support while allowing for easy on and off has become a pressing technical challenge. Summary of the Invention

[0004] The purpose of this invention is to provide a dual-hardness heel support structure to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a dual-hardness heel support structure, comprising a support part and an easy-to-wear part, wherein the outer contour of the support part matches the curvature of the inner surface of the heel of the shoe, the lower end of the easy-to-wear part is connected to the support part, and the upper end extends obliquely away from the shoe upper, with its top surface forming a heel guide area with an arc surface, the hardness of the support part is greater than the hardness of the easy-to-wear part, and the easy-to-wear part returns to its original shape after being deformed by force.

[0006] Furthermore, the dual-hardness heel support structure includes a support sheet and an elastomer covering it. The support sheet is correspondingly disposed at the support position, and the elastomer extends to form an easy-to-wear portion.

[0007] Furthermore, the support sheet is made of one or more of TPU, nylon, or glass fiber reinforced materials.

[0008] Furthermore, the thickness of the support sheet is 2~4mm.

[0009] Furthermore, the elastomer is made of one or more of TPU elastomers and TPEE elastomers.

[0010] Furthermore, the support structure has holes, which are evenly distributed on the surface of the support structure.

[0011] Furthermore, the upper end of the easy-to-wear part extends at an angle of 20° to 45° away from the shoe upper.

[0012] Furthermore, the upper end of the easy-to-wear section extends obliquely and is 5-15mm higher than the edge of the heel opening of the shoe.

[0013] A shoe includes the aforementioned dual-hardness heel support structure, wherein the dual-hardness heel support structure is disposed at the heel portion of the shoe.

[0014] Furthermore, the side panel is made of sponge, which clamps and wraps around the dual-hardness heel support structure.

[0015] Compared with the prior art, the beneficial effects of this utility model are:

[0016] 1. The dual-hardness heel support structure of this utility model uses a differentiated hardness design. The support part is made of high-hardness material to provide static rigid support, ensuring that the heel maintains a stable posture during walking and exercise and preventing abnormal shaking. The easy-to-put-on part is made of elastic material to cushion the pressure on the Achilles tendon during exercise. The arc-shaped guide and elastic deformation characteristics of the easy-to-put-on part enable the shoe opening to open automatically when the heel is stepped on, making it easy for the heel to slide into the shoe automatically. After putting on and taking off, the structure returns to its original position to maintain heel stability. The heel of the shoe is not easily deformed, making the shoe shape more beautiful. It takes into account both static wearing comfort and dynamic sports protection. There is no need to lift by hand during the putting on and taking off process.

[0017] 2. The adhesive forms nails through the holes in the backrest, which provides better fixation and prevents the backrest from coming off due to movement or pulling, resulting in a longer service life. Attached Figure Description

[0018] Figure 1 is a schematic diagram of the dual-hardness heel support structure of this utility model;

[0019] Figure 2 is a schematic diagram of the support plate structure in the dual-hardness heel support structure of this utility model;

[0020] In the diagram, 1-support part, 2-easy-to-wear part, 3-support piece, 4-hole. Detailed Implementation

[0021] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0022] As shown in Figures 1 and 2, this embodiment provides a dual-hardness heel support structure, including a support sheet and an elastomer. The elastomer covers the support sheet 3, forming a composite structure with a support part 1 at the bottom and an easy-to-wear part 2 at the top. The elastomer extends to form the easy-to-wear part 2, and the support sheet is correspondingly disposed at the position of the support part 1. The hardness of the support part 1 is greater than that of the easy-to-wear part 2. The outer contour of the support part 1 matches the curvature of the inner surface of the shoe heel. The lower end of the easy-to-wear part 2 is connected to the support part 1, and the upper end extends obliquely away from the shoe upper, for example, at an angle of 20° to 45°, preferably 35°. The height of the upper end is 5 to 15 mm higher than the edge of the shoe heel opening, and its top surface forms a heel guide area with an arc surface. The easy-to-wear part 1 returns to its original shape after being deformed by force. In this embodiment, the support sheet is made of a relatively hard material, such as one or more of TPU, nylon, or glass fiber reinforced materials. The thickness of the support sheet is 2-4 mm, and the contour of the support sheet matches the curvature of the inner surface of the shoe heel. The elastomer is made of a relatively soft material, such as TPU. The shoe is made of one or more elastomers, such as TPEE elastomers. The support sheet and the elastomer are integrally molded through injection molding. Specifically, the support sheet is fixed to the inner layer of the mold, and molten elastomer material is injected into the outer layer and cooled and solidified to form a composite structure with a support part 1 at the bottom and an easy-to-wear part 2 at the top. In this way, the support part 1 provides static rigid support with a high-hardness material to ensure that the heel maintains a stable posture during walking and exercise and prevents abnormal shaking. The easy-to-wear part 2 is made of elastic material to cushion the pressure on the Achilles tendon during exercise. Utilizing the arc-shaped guidance and elastic deformation characteristics of the easy-to-wear part 2, the shoe opening is automatically opened when the heel is stepped on, making it easy for the heel to slide into the shoe automatically. After putting on and taking off, the structure returns to its original position to maintain heel stability, taking into account both static wearing comfort and dynamic sports protection. The putting on and taking off process does not require hand lifting. The support structure has holes 4, which are evenly distributed on the surface of the support structure.

[0023] This embodiment also provides a shoe, including an upper and the aforementioned dual-hardness heel support structure. The dual-hardness heel support structure is located at the heel portion of the upper. The upper has grooves corresponding to the shape of the dual-hardness heel support structure, facilitating its installation. The upper is made of sponge and clamps and wraps around the dual-hardness heel support structure, allowing it to effectively shape the upper. Adhesive is applied to the dual-hardness heel support structure to bond it to the upper. Water-based adhesive can be used. After the adhesive dries, it forms adhesive nails through holes 4. These nails hang the dual-hardness heel support structure on the upper, securing it firmly. Because holes 4 are evenly distributed on the surface of the dual-hardness heel support structure, the adhesive nails are distributed omnidirectionally, securing the structure.

[0024] This utility model's dual-hardness heel support structure employs a differentiated hardness design. The support part is made of a high-hardness material, providing static rigid support to ensure the heel maintains a stable posture during walking and exercise, preventing abnormal swaying. The easy-on / off part is made of an elastic material, cushioning Achilles tendon pressure during exercise. Utilizing the curved surface and elastic deformation characteristics of the easy-on / off part, the shoe opening automatically opens when the heel is stepped on, facilitating the heel's automatic sliding into the shoe. After putting on or taking off, the structure returns to its original position, maintaining heel stability. Furthermore, the heel counter is less prone to deformation, resulting in a more aesthetically pleasing shoe shape. It balances static wearing comfort with dynamic sports protection, eliminating the need for manual lifting during the putting-on / taking-off process. The holes in the heel counter allow glue to form adhesive studs for better fixation, preventing the heel counter from detaching due to pulling during exercise and extending its service life.

[0025] Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A dual-hardness heel support structure, characterized in that: It includes a support part and an easy-to-wear part. The outer contour of the support part matches the curvature of the inner surface of the heel of the shoe. The lower end of the easy-to-wear part is connected to the support part, and the upper end extends inclined away from the upper of the shoe. Its top surface forms a heel guide area with an arc surface. The hardness of the support part is greater than that of the easy-to-wear part. The easy-to-wear part returns to its original shape after being deformed by force.

2. The dual-hardness heel support structure according to claim 1, characterized in that: The support structure includes a support sheet and an elastic body covering it. The support sheet is disposed at the support portion, and the elastic body extends to form an easy-to-wear portion.

3. The dual-hardness heel support structure according to claim 2, characterized in that: The support sheet is made of one of TPU, nylon, or glass fiber reinforced materials.

4. The dual-hardness heel support structure according to claim 3, characterized in that, The thickness of the support sheet is 2~4mm.

5. The dual durometer heel support structure of claim 2, wherein: The elastomer is made from either TPU elastomer or TPEE elastomer.

6. The dual firmness heel support structure of claim 1 or 2, wherein: The support structure has holes, which are evenly distributed on the surface of the support structure.

7. The dual firmness heel support structure of claim 1, wherein: The upper end of the easy-to-wear section extends at an angle of 20° to 45° away from the shoe upper.

8. The dual firmness heel support structure of claim 1 or 7, wherein: The upper part of the easy-to-wear section extends obliquely and is 5-15mm higher than the edge of the heel opening of the shoe.

9. A shoe, characterized in that: Includes the dual-hardness heel support structure as described in any one of claims 1 to 8, wherein the dual-hardness heel support structure is provided in the heel portion of the shoe.

10. A shoe according to claim 9, characterized in that: The shoe includes an upper, which is made of sponge and clamps and wraps around a dual-hardness heel support structure.

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