Steel hook core structure for high heel shoes

Abstract

The utility model discloses a steel hook core structure for high -heeled shoes in the field of steel hook core, is bent from the integral forming sheet metal, the surface of sheet metal is recessed to form the recess of arc shape to the inside, recess fixedly is provided with the reinforcing strip of arc shape, reinforcing strip is arranged along the recess, one end of sheet metal extends to the heel department that forms outward, the other end of sheet metal extends to the palm department that forms outward, one end of reinforcing strip extends to heel department, the other end of reinforcing strip extends to palm department, one end of sheet metal near heel department is provided with fixed block, the surface of fixed block is recessed to form fixed groove to the inside, one end of sheet metal near heel department is provided with a plurality of the clamping rod of mushroom head shape, a plurality of clamping rod equidistance arrangement distribution along the surface of sheet metal, the utility model discloses a steel hook core structure for high -heeled shoes, through setting arc recess and reinforcing strip on the surface of sheet metal, has improved the bending -resistant and the torsional rigidity of steel hook core significantly.

Description

Technical Field

[0001] This utility model relates to the field of steel shank, specifically a steel shank structure for high heels. Background Technology

[0002] The steel shank is a key support component embedded inside the sole, usually made of sheet metal. Its core functions include: bearing the concentrated pressure of the foot on the sole when walking, especially the bending and torsional moments in the heel and forefoot areas of high heels; maintaining the curvature of the sole through a rigid structure to prevent the sole from collapsing or deforming due to long-term wear; and serving as the skeleton for the various layers of sole materials (such as the midsole and outsole), and being combined with the heel and forefoot structures through mechanical connections or adhesives.

[0003] Existing steel shanks are typically simple in design and lack effective reinforcement. This makes them prone to bending or twisting during walking, especially when high heels are subjected to significant pressure or torque. For example, when a wearer walks or stands, the heel and forefoot experience substantial counterforces, which are transmitted to the steel shank through the sole. If the shank's resistance to bending and torsion is insufficient, it can easily deform, affecting the shoe's overall structure and stability. Existing steel shanks also lack quick-connect mechanisms, typically requiring complex processes to secure them to the high heels. This not only increases manufacturing difficulty and time costs but also hinders subsequent repairs and replacements. For instance, traditional steel shanks may require large amounts of glue or special fixing devices to achieve a tight bond with the sole. This connection method is not only cumbersome but also difficult to repair quickly if damaged. Furthermore, steel shanks are prone to loosening due to external impacts or prolonged friction. Especially with frequent use of high heels, the connection between the steel shank and the sole may gradually become unstable. For example, if the connection between the steel shank and the sole is not secure, vibrations and pressure during walking may cause the shank to shift or loosen, affecting comfort and safety. Therefore, existing steel shanks suffer from poor bending and torsional resistance, difficulty in quickly attaching to high heels, and a tendency to loosen, requiring further improvement. Utility Model Content

[0004] In order to overcome the shortcomings of existing technical solutions, this utility model provides a steel shank structure for high heels, which can effectively solve the technical problems of poor bending and torsion resistance of existing steel shanks, inconvenience of quick connection between steel shanks and high heels, and easy loosening of steel shanks.

[0005] The technical solution adopted by this utility model to solve its technical problem is: a steel shank structure for high heels, which is formed by bending an integrally molded metal plate. The surface of the metal plate is concave inward to form an arc-shaped groove. An arc-shaped reinforcing strip is fixedly installed in the groove. The reinforcing strip is arranged along the groove. One end of the metal plate extends outward to form a heel, and the other end of the metal plate extends outward to form a palm. One end of the reinforcing strip extends to the heel, and the other end of the reinforcing strip extends to the palm. A fixing block is provided at one end of the metal plate near the heel. The surface of the fixing block is concave inward to form a fixing groove. Several mushroom-shaped locking rods are provided at one end of the metal plate near the heel. The several locking rods are evenly distributed along the surface of the metal plate.

[0006] Furthermore, both ends of the metal plate are provided with screw holes for screwing in screws.

[0007] Furthermore, the cross-section of the reinforcing strip is semi-circular.

[0008] Furthermore, the reinforcing strip is made of stainless steel, and the metal plate is made of cold-rolled strip steel, carbon steel, or stainless steel.

[0009] Furthermore, the surface of the metal plate is also plated with a nickel plating layer.

[0010] Compared with the prior art, the beneficial effects of this utility model are as follows: This utility model provides a steel shank structure for high heels. By setting arc-shaped grooves and reinforcing strips on the surface of the metal plate, the bending and torsional resistance of the steel shank is significantly improved. The reinforcing strips extend from the heel to the ball of the foot, ensuring the stability of the high heels when walking, effectively distributing the force on the high heels, reducing the deformation of the heel and ball of the foot, and improving wearing comfort. The design of the fixing block and snap-fit ​​rod at one end of the metal plate facilitates quick connection with the high heels. The mushroom-shaped snap-fit ​​rod provides strong gripping force to prevent the steel shank from shifting or loosening during use. Attached Figure Description

[0011] Figure 1 This is a perspective view of a steel shank structure for high heels according to the present invention;

[0012] Figure 2 This is a bottom view of a steel shank structure for high heels according to the present invention.

[0013] Numbering on the map:

[0014] 1-Metal plate; 2-Groove; 3-Palm; 4-Heel; 5-Reinforcing strip; 6-Screw hole; 7-Fixing groove; 8-Fixing block; 9-Snap-fit ​​rod. Detailed Implementation

[0015] 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.

[0016] The following is combined with Figure 1 and Figure 2 A detailed description of a steel shank structure for high heels according to this utility model is provided below:

[0017] A steel shank structure for high heels is formed by bending a one-piece metal plate 1. The surface of the metal plate 1 is recessed inward to form an arc-shaped groove 2. An arc-shaped reinforcing strip 5 is fixedly installed in the groove 2. The reinforcing strip 5 is arranged along the groove 2. The arc-shaped groove 2 formed by the one-piece bent metal plate 1, together with the arc-shaped reinforcing strip 5 arranged along the groove 2, significantly improves the overall bending resistance and structural strength of the steel shank. The curved design effectively disperses stress concentration when high heels are subjected to force, preventing local deformation or breakage and extending service life. One end of the metal plate 1 extends outward to form the heel 4, and the other end extends outward to form the ball part 3. One end of the reinforcing strip 5 extends to the heel 4, and the other end extends to the ball part 3. The reinforcing strip 5 covers the key stress areas of the steel shank (heel 4 and ball part 3), enhancing the support stability of the heel and forefoot of the high heel, preventing shank breakage or high heel collapse due to long-term stress, and improving wearing safety. A fixing block 8 is provided at the end of the metal plate 1 near the heel 4, and the surface of the fixing block 8 is concave inward. The metal plate 1 has a fixed groove 7. Several mushroom-shaped locking rods 9 are provided at one end of the metal plate 1 near the heel 4. The locking rods 9 are evenly distributed along the surface of the metal plate 1. The mushroom-shaped structure of the locking rods 9, together with the fixing groove 7 of the fixing block 8, can achieve a firm connection with the high heel, reduce the risk of displacement of the steel shank, ensure the tight fit between the steel shank and the high heel structure, and improve the overall stability. Both ends of the metal plate 1 are provided with screw holes 6 for screwing in screws. The cross-section of the reinforcing strip 5 is semi-circular. The reinforcing strip 5 is made of stainless steel. The metal plate 1 is made of cold-rolled strip steel. The surface of the metal plate 1 is also plated with a nickel plating layer.

[0018] In this embodiment, the screw holes 6 at both ends of the metal plate 1 provide an additional fixing method for connecting the steel shank to the high heel or shoe heel. Screws can securely fix the shank to the high heel through the screw holes 6, further enhancing the stability of the shank, adapting to the installation needs of different shoe types, and improving the versatility and reliability of the steel shank. The semi-circular cross-section design of the reinforcing strip 5 reduces material usage and lowers the weight of the shank while providing structural reinforcement. The semi-circular cross-section effectively disperses stress, enhances the bending resistance of the shank, ensures stability during walking in high heels, and reduces the risk of damage due to uneven stress. The reinforcing strip 5 is made of stainless steel, which has excellent strength and corrosion resistance, ensuring the stability and support performance of the shank during long-term use. The metal plate 1 is made of cold-rolled strip steel, further improving the overall strength of the steel shank. The nickel plating layer on the surface of the metal plate 1 not only improves the appearance quality of the steel shank but also has good rust prevention and wear resistance. The nickel plating layer effectively prevents oxidation and corrosion of the steel shank surface, extending the service life of the steel shank.

[0019] This embodiment of a steel shank structure for high heels significantly improves the bending and torsional resistance of the steel shank by setting an arc-shaped groove 2 and a reinforcing strip 5 on the surface of the metal plate 1. The reinforcing strip 5 extends from the heel 4 to the ball of the foot 3, ensuring the stability of the high heels when walking, effectively distributing the force on the high heels, reducing the deformation of the heel and ball of the foot 3, and improving wearing comfort. The design of the fixing block 8 and the snap-fit ​​rod 9 at one end of the metal plate 1 facilitates quick connection with the high heels. The mushroom-shaped snap-fit ​​rod 9 provides strong gripping force to prevent the steel shank from shifting or loosening during use.

[0020] When manufacturing the steel shank, a cold-rolled strip steel (or carbon steel, stainless steel, selected according to requirements) metal plate 1 is used, with the thickness determined according to the shoe design. A semi-circular stainless steel reinforcing strip 5 is selected, with its length matching the groove 2 of the metal plate 1. According to the design drawings, the cold-rolled strip steel is cut into the predetermined shape using a laser cutter or punch press. The reinforcing strip 5 is cut to the length of the groove 2 of the metal plate 1, with extensions at both ends extending to the heel 4 and the ball of the foot 3. The cut metal plate 1 is placed in a bending machine mold, and the arc-shaped groove 2 structure is formed through a hydraulic bending process. It is ensured that the curvature of the groove 2 matches the curvature of the high-heeled shoe sole to avoid stress concentration. CNC equipment is used to ensure that the bending angle and dimensional error are ≤0.1mm, guaranteeing the fit of the reinforcing strip 5 during subsequent installation. On the surface of the bent metal plate 1, the contour of the groove 2 is further refined through stamping or milling processes to ensure a smooth, burr-free surface. The semi-circular stainless steel reinforcing strip 5 is arranged along the groove 2, extending to the heel 4 and the ball of the foot 3 at both ends. Laser welding or high-frequency induction welding is used to ensure a tight bond between the reinforcing strip 5 and the metal plate 1, with a welding point spacing of ≤5mm to prevent loosening. The formed steel hook is then surface-cleaned (degreasing and derusting) and immersed in an electroplating bath to deposit a nickel layer on the surface. The plating thickness is typically 5-15μm to ensure rust prevention and wear resistance. After nickel plating, polishing is performed to improve surface smoothness and reduce friction with the sole material. In the heel area 4 of the metal plate 1, a fixing block 8 is formed using a stamping process, and a fixing groove 7 is machined on its surface. The snap-fit ​​rod 9 is formed by stamping and stretching the edge of the metal plate 1 into a mushroom shape, with spacing according to design requirements (typically 3-5mm equidistant). Screw holes 6 are machined at both ends of the metal plate 1 (heel area 4 and foot area 3) using a drilling machine, with the hole diameter matching the screw specifications (e.g., M3 or M4 screw holes 6).

[0021] When installing the steel shank, clean the dust and impurities from the surface of the high heel to ensure a flat installation surface. Mark the installation areas for the fixing block 8 and the snap-fit ​​rod 9 at the corresponding positions on the base and heel 3 of the steel shank. With the arc-shaped groove 2 of the steel shank facing down, align the base with the heel 4 of the high heel and the heel 3 with the forefoot area. Ensure that the fixing block 8 and the snap-fit ​​rod 9 are aligned with the marked installation areas on the high heel. Gently press the steel shank with your hand to ensure its curvature fully conforms to the curvature of the high heel, preventing warping or displacement. Align the mushroom-shaped snap-fit ​​rod 9 with the pre-drilled snap-fit ​​hole (or slot) on the high heel, and gently tap the end of the snap-fit ​​rod 9 with a hammer to make its mushroom head snap into the inside of the high heel. At the same time, align the fixing groove 7 of the fixing block 8 with the protruding structure on the high heel, and press firmly to ensure that the fixing groove 7 and the high heel are tightly engaged. Align the screw holes 6 at both ends of the steel shank with the pre-drilled holes on the high heel. Using a screwdriver, screw the screws into the screw holes 6 one by one, tightening with moderate force to avoid stripping the screws or cracking the high heels. After installation, perform a final stability check by gently pulling the steel hook to check if the locking rod 9 and screws are secure and not loose. Simulate walking movements to observe whether the steel hook deforms synchronously with the sole of the shoe, without any abnormal noise or displacement. If any looseness is found, tap the locking rod 9 again or tighten the screws again. If necessary, apply a small amount of glue to the contact surface to strengthen the fixation. Finally, remove any debris or glue residue generated during installation to keep the high heels clean. This completes the entire installation and inspection process.

[0022] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, all variations falling within the meaning and scope of equivalents of the claims are intended to be included within this invention, and no reference numerals in the claims should be construed as limiting the scope of the claims.

Claims

1. A steel shank structure for high heels, formed by bending a one-piece molded metal plate, characterized in that: The surface of the metal plate is recessed inward to form an arc-shaped groove. An arc-shaped reinforcing strip is fixedly installed in the groove. The reinforcing strip is arranged along the groove. One end of the metal plate extends outward to form a heel, and the other end of the metal plate extends outward to form a palm. One end of the reinforcing strip extends to the heel, and the other end of the reinforcing strip extends to the palm. A fixing block is provided at one end of the metal plate near the heel. The surface of the fixing block is recessed inward to form a fixing groove. Several mushroom-shaped snap-fit ​​rods are provided at one end of the metal plate near the heel. The snap-fit ​​rods are evenly distributed along the surface of the metal plate.

2. The steel shank structure for high heels according to claim 1, characterized in that: Both ends of the metal plate are provided with screw holes for screwing in screws.

3. The steel shank structure for high heels according to claim 1, characterized in that: The cross-section of the reinforcing strip is semi-circular.

4. The steel shank structure for high heels according to claim 1, characterized in that: The reinforcing strip is made of stainless steel, and the metal plate is made of cold-rolled strip steel, carbon steel, or stainless steel.

5. A steel shank structure for high heels according to any one of claims 1-4, characterized in that: The surface of the metal plate is also plated with a nickel plating layer.

Images