A puncture-resistant sole incorporating a metal guard

Abstract

The application relates to the technical field of shoes, and provides a puncture-resistant shoe sole with a built-in metal protection piece, which comprises a shoe sole body and a metal protection piece embedded in the shoe sole body, the metal protection piece comprises a metal plate covering the forefoot part to the heel part of the shoe sole body, at least one deformation joint is arranged at the joint between the forefoot part and the arch part of the metal plate, the length direction of the deformation joint is parallel to the width direction of the metal plate, and the width of the deformation joint is less than 2 mm. The application arranges the deformation joint with the width less than 2 mm at the joint between the forefoot part and the arch part of the metal plate, can guarantee the continuity of protection, release the bending stress through the joint slot, solves the problem of rigidity of the traditional metal shoe sole, makes the shoe sole more fit the movement of the foot, and improves the comfort of wearing.

Description

Technical Field

[0001] This application relates to the technical field of footwear, and in particular to a puncture-resistant sole with a built-in metal protective element. Background Technology

[0002] In the footwear industry, puncture-resistant soles have always been an important research area. With increasing awareness of foot safety, the market demand for puncture-resistant soles is growing. In certain work environments, such as construction sites and factory workshops, workers face the risk of their feet being injured by sharp objects puncturing their shoe soles; therefore, puncture-resistant soles can provide them with necessary safety protection.

[0003] Traditional puncture-resistant soles typically employ a single, integrated metal plate embedded directly into the sole to achieve puncture resistance. This method relies on the high strength and rigidity of the metal plate itself to block sharp objects. However, this lacks an effective stress-relieving structure, resulting in a very stiff sole. During walking, the sole cannot flexibly deform with the foot's bending movements, significantly impacting the wearer's walking comfort, thus requiring further improvement. Utility Model Content

[0004] To address the above issues, this application provides a puncture-resistant shoe sole with a built-in metal protective component.

[0005] This application provides a puncture-resistant shoe sole with a built-in metal protective component, employing the following technical solution: A puncture-resistant shoe sole with a built-in metal protective component includes a shoe sole body and a metal protective component embedded in the shoe sole body. The metal protective component includes a metal plate covering the forefoot portion to the heel portion of the shoe sole body. At least one deformation joint is provided at the connection between the forefoot portion and the arch portion of the metal plate. The length direction of the deformation joint is parallel to the width direction of the metal plate, and the width of the deformation joint is less than 2 mm.

[0006] By adopting the above technical solution, the metal plate of the metal protective component covers the forefoot to the heel of the sole body to achieve protection of the sole. An expansion joint with a width of less than 2mm is set at the connection between the forefoot and arch of the metal plate, which not only ensures the continuity of protection, but also releases bending stress through the groove. This solves the problem of stiffness of traditional metal soles, makes the sole fit the movement of the foot better, and improves the comfort of wearing.

[0007] Preferably, the metal plate also has an expansion joint between the forefoot and the toe.

[0008] By adopting the above technical solution, deformation seams are also provided between the forefoot and the toe, which further improves the fit of the sole to the foot during movement, thereby improving the comfort of wearing the shoe.

[0009] Preferably, the expansion joint is filled with an elastic rubber strip.

[0010] By adopting the above technical solution, filling the expansion joint with elastic rubber strips can reduce the possibility of debris getting embedded in the expansion joint, while improving resilience, thereby further increasing the flexibility and comfort of the shoe sole.

[0011] Preferably, the cross-section of the expansion joint is trapezoidal, and the width of the expansion joint groove increases from the inner wall of the metal plate toward its lower surface.

[0012] By adopting the above technical solution, the cross-section of the expansion joint is set in a trapezoidal shape and the width of the groove increases from the inner wall of the metal plate to its lower surface. This trapezoidal flaring design can provide a progressive deformation space for the metal plate when the sole bends, making the metal plate more smooth and stable during the deformation process under stress. It effectively reduces the breakage or damage caused by insufficient deformation space, thereby enhancing the durability of the metal protective components. At the same time, it better adapts to various bending states of the sole during walking and other activities, improving the user experience.

[0013] Preferably, the metal protective component further includes a reinforcing plate disposed on the lower surface of the metal plate.

[0014] By adopting the above technical solution, setting a reinforcing plate on the lower surface of the metal plate can enhance the overall strength and stability of the metal protective components; further improve the puncture resistance of the sole, effectively reduce the penetration of sharp objects from the outside, better protect the wearer's feet from injury, and at the same time make the metal protective components more durable during use, less prone to deformation and damage, and extend the service life of the sole.

[0015] Preferably, the reinforcing plate includes a middle part disposed on the arch of the foot, two second extensions disposed on both sides of the forefoot, and two third extensions disposed on both sides of the heel. The middle part, the two second extensions, and the two third extensions are integrally formed and arranged in an X shape.

[0016] By adopting the above technical solution, the middle part of the arch can support the arch and stabilize the foot structure; the sides of the forefoot and the edge of the heel (high-risk puncture areas) are specifically reinforced, with second and third extensions set on the sides of the forefoot and heel respectively, to enhance the strength of the forefoot and heel, so that the sole can withstand greater pressure during walking and is not easily damaged; moreover, the middle part, the two second extensions and the two third extensions are integrally molded in an X-shape. This structure not only makes the overall strength of the reinforcing plate higher and can work better with the metal plate to jointly improve the puncture resistance of the sole, but also disperses the pressure from different directions, further improving the comfort and durability of the sole.

[0017] Preferably, the metal plate sidewall is provided with a first extension portion, the first extension portion is disposed on the inner side of the arch of the foot, and the upper surface of the first extension portion is provided with a protrusion portion.

[0018] By adopting the above technical solution, a first extension portion located on the inner side of the arch is provided on the side wall of the metal plate, and a protrusion is provided on the upper surface of the first extension portion. This can enhance the support of the inner side of the arch, better fit the human arch structure, provide more stable support for the foot, help distribute foot pressure, reduce fatigue in the arch area during walking or exercise, and improve the overall stability and comfort of the sole.

[0019] Preferably, the metal protective component is a 3D printed component.

[0020] By adopting the above technical solutions and using 3D printing of metal protective parts, it is possible to accurately manufacture metal protective parts with complex shapes and structures, thereby improving production efficiency and product quality.

[0021] In summary, this application has the following beneficial effects: 1. The metal plate has an expansion joint between the forefoot and the arch, which ensures the continuity of protection and releases bending stress, solving the problem of stiffness in traditional metal soles and improving the wearer's walking comfort. 2. Expansion joints help to disperse compressive stress and avoid stress concentration. Attached Figure Description

[0022] Figure 1 This is a side view of Embodiment 1 of this application; Figure 2 This is a schematic diagram of the overall structure of Embodiment 1 of this application; Figure 3 This is a schematic diagram of the structure of the metal protective component in Embodiment 1 of this application; Figure 4 This is a bottom view of the metal protective component in Embodiment 1 of this application; Figure 5 This is a schematic diagram of the expansion joint structure in Embodiment 1 of this application; Figure 6 This is a schematic diagram of the structure of the elastic rubber strip in Embodiment 2 of this application.

[0023] Explanation of reference numerals in the attached drawings: 1. Shoe sole body; 2. Metal protective component; 21. Metal plate; 211. First extension; 212. Protrusion; 22. Reinforcing plate; 221. Middle part; 222. Second extension; 223. Third extension; 3. Expansion joint; 4. Elastic rubber strip. Detailed Implementation

[0024] The following is in conjunction with the appendix Figure 1 -Appendix Figure 6 This application will be described in further detail below.

[0025] This application discloses a puncture-resistant shoe sole with a built-in metal protective component.

[0026] Example 1: A puncture-resistant shoe sole with built-in metal protective components, as shown in the reference. Figure 1 , Figure 2 It includes the sole body 1 and the metal protective component 2 embedded in the sole body 1. The metal protective component 2 is embedded in the sole body 1 and can play a role in preventing puncture.

[0027] Reference Figure 3 In this embodiment, the metal protective component 2 can be integrally formed using 3D printing technology, resulting in high support strength and light weight. As for the material selection, ultra-lightweight metal materials can be chosen, preferably titanium alloy, nickel alloy, or high-strength aluminum alloy. Metal protective components 2 made from these materials possess sufficient strength while being lightweight, reducing the burden on the feet.

[0028] Reference Figure 3 , Figure 4 Specifically, the metal protective component 2 includes a metal plate 21 and a reinforcing plate 22 disposed on the lower surface of the metal plate 21. The metal plate 21 covers the metal plate 21 from the forefoot to the heel of the sole body 1. In this embodiment, the thickness of the metal plate 21 is between 1-3 mm. The side wall of the metal plate 21 is provided with a first extension 211, which is disposed on the inner side of the arch. The side wall of the first extension 211 away from the metal plate 21 is concave and arc-shaped. The upper surface of the first extension 211 is provided with a protrusion 212, which is arc-shaped corresponding to the side wall of the first extension 211. The height of the protrusion 212 decreases from the middle and rear to both ends. The protrusion 212 is exposed on the outer side wall of the sole body 1 and is flush with the outer side wall of the sole body 1. Figure 2 As shown.

[0029] The reinforcing plate 22 specifically includes a middle portion 221 disposed on the arch of the foot, two second extension portions 222 respectively disposed on both sides of the forefoot, and two third extension portions 223 respectively disposed on both sides of the heel. The second extension portions 222 are arc-shaped. The middle portion 221, the two second extension portions 222, and the two third extension portions 223 are integrally formed and arranged in an X-shape. This X-shaped reinforcing plate 22 structure can effectively disperse stress from all directions and enhance the strength of the metal plate 21 in key areas.

[0030] To improve the comfort provided by the metal protective component 2 inside the sole, in this embodiment, at least one expansion joint 3 is provided at the connection between the forefoot and arch of the metal plate 21, and another expansion joint 3 is provided between the forefoot and toe of the metal plate 21. The length direction of the expansion joint 3 is parallel to the width direction of the metal plate 21, and the width of the expansion joint 3 is less than 2mm. The length of the expansion joint 3 itself is less than the width of the metal plate 21 itself. It can be provided as one joint along the width direction of the metal plate 21, or several joints can be provided along the length direction of the metal plate 21, depending on the requirements.

[0031] The expansion joint 3 has a trapezoidal cross-section. Specifically, the width of the expansion joint 3 increases from the upper surface of the metal plate 21 to its lower surface. It should be noted that the expansion joint 3 can be manufactured using a cutting process. The function of the expansion joint 3 is to release stress when the sole bends, making the sole more flexible. With the expansion joint 3 in place, when the sole bends, it provides a certain amount of deformation space, reducing the stress on the metal plate 21.

[0032] The implementation principle of the puncture-resistant shoe sole with built-in metal protective components in this embodiment is as follows: The puncture-resistant shoe sole of this embodiment reasonably sets the metal protective component 2 inside the shoe sole body 1, and adopts structural designs such as deformation joints 3, elastic rubber strips 4, and reinforcing plates 22, which not only ensures the puncture resistance of the shoe sole, but also solves the problem of the rigidity of traditional metal shoe soles. The deformation joints 3 can release bending stress, making the shoe sole more flexible.

[0033] Example 2: Reference Figure 6 The difference from Example 1 is that the expansion joint 3 is filled with an elastic rubber strip 4. The elastic rubber strip 4 is generally made of natural or synthetic rubber, possessing good elasticity and flexibility. The elastic rubber strip 4 acts as a cushioning element when the sole bends, further enhancing the flexibility and comfort of the sole. The elastic rubber strip 4 is fixed to the expansion joint 3 by adhesive bonding, or it can be directly embedded into the expansion joint 3 during sole manufacturing.

[0034] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A puncture-resistant shoe sole with a built-in metal protective component, characterized in that: The shoe includes a sole body (1) and a metal protective component (2) embedded in the sole body (1). The metal protective component (2) includes a metal plate (21) covering the forefoot part to the heel part of the sole body (1). The metal plate (21) has at least one deformation joint (3) at the connection between the forefoot part and the arch part. The length direction of the deformation joint (3) is parallel to the width direction of the metal plate (21). The width of the deformation joint (3) is less than 2 mm.

2. The puncture-resistant shoe sole with a built-in metal protective component according to claim 1, characterized in that: The metal plate (21) also has a deformation joint (3) between the forefoot and the toe.

3. A puncture-resistant shoe sole with a built-in metal protective component according to claim 1, characterized in that: The expansion joint (3) is filled with an elastic rubber strip (4).

4. A puncture-resistant shoe sole with a built-in metal protective component according to claim 1, characterized in that: The cross-section of the expansion joint (3) is trapezoidal, and the width of the groove of the expansion joint (3) increases from the upper surface of the metal plate (21) to its lower surface.

5. A puncture-resistant shoe sole with a built-in metal protective component according to claim 1, characterized in that: The metal protective component (2) also includes a reinforcing plate (22) disposed on the lower surface of the metal plate (21).

6. A puncture-resistant shoe sole with a built-in metal protective component according to claim 5, characterized in that: The reinforcing plate (22) includes a middle part (221) disposed on the arch of the foot, two second extensions (222) respectively disposed on both sides of the forefoot, and two third extensions (223) respectively disposed on both sides of the heel. The middle part (221), the two second extensions (222) and the two third extensions (223) are integrally formed and arranged in an X shape.

7. A puncture-resistant shoe sole with a built-in metal protective component according to claim 1, characterized in that: The metal plate (21) has a first extension (211) on its side wall. The first extension (211) is located on the inner side of the arch of the foot. The upper surface of the first extension (211) has a protrusion (212).

8. A puncture-resistant shoe sole with a built-in metal protective component according to claim 1, characterized in that: The metal protective component (2) is a 3D printed part.

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