Replaceable heels

Abstract

A replaceable heel includes a main body, a heel body, and a detachable fixing component. The detachable fixing component enables a detachable connection between the main body and the heel body. The component is positioned between the main body and the heel body. After the main body and heel body are installed, rotating them at a detachment angle achieves a tightening fixation between them. After tightening the main body and heel body, the component then uses a snap-fit ​​mechanism to achieve a snap-fit ​​fixation between them. The advantages of this invention are: through a dual fixing mechanism of tightening followed by snap-fit, the main body and heel body first generate radial tightening force to eliminate gaps during installation and rotation, and then achieve axial locking through the snap-fit ​​structure. This ensures no wobbling during walking and concentrates the disassembly action on a single operable component. Only active triggering of the snap-fit ​​release is required to rotate it out in the opposite direction, thus achieving a reliable balance between stability and convenience.

Description

Technical Field

[0001] This utility model relates to a heel body, and more particularly to a replaceable shoe heel. Background Technology

[0002] High heels, as an essential item in everyday wear, are widely used in various scenarios such as business commutes, social gatherings, and stage performances. When wearing them, the heel and the main body must share the weight of the entire body and the dynamic impact of walking, especially when going up and down stairs on uneven surfaces, walking quickly, or dancing and spinning, where the forefoot of the heel and the main body are repeatedly subjected to bending, friction, and pressure. As the core of support, the height, material, and bonding strength with the heel directly determine the stability and comfort of wearing the shoes. In the process of using existing shoes, the bottom of the main body often wears down due to long-term friction, or breaks or loosens due to external impact. At this time, the overall function and appearance of the shoe are affected, and consumers usually have to send the whole shoe for repair or simply discard it.

[0003] However, most existing high heels use a one-piece molding or permanent adhesive bonding structure for the main body and heel. Once the main body is damaged, the forefoot of the heel is broken, or different heel types (block heels and stiletto heels) are needed for different usage scenarios, the shoe loses its overall usability, leading to resource waste and increased usage costs. To improve this situation, high heel designs with replaceable main bodies have appeared on the market. These designs use screw-on screws, snap-fit ​​connections, or other methods to achieve mechanical connection between the main body and heel, allowing users to replace worn or different styles of the main body themselves. However, this type of solution still has significant drawbacks in practical applications: to ensure the main body is stable and does not wobble while walking, the connection structure often needs to be tightly locked, making disassembly extremely time-consuming and laborious; on the other hand, simplifying the structure to pursue the convenience of heel replacement can easily cause the main body to loosen during use, posing a safety hazard. It is difficult to strike a reliable balance between stable connection and easy disassembly. Utility Model Content

[0004] In view of the shortcomings of the prior art, this utility model provides a replaceable shoe heel that can balance a stable connection with easy disassembly.

[0005] To achieve the above objectives, the present invention provides the following technical solution: a replaceable heel, comprising a main body, a heel body, and a disassembly and fixing component. The disassembly and fixing component is used to achieve a detachable connection between the main body and the heel body. The disassembly and fixing component is disposed between the main body and the heel body. The disassembly and fixing component allows the main body and the heel body to be rotated through a disassembly and assembly angle after being installed to achieve a tightening and fixing between the main body and the heel body. After the disassembly and fixing component achieves tightening and fixing between the main body and the heel body, it then achieves snap-fit ​​fixing between the main body and the heel body through a snap-fit ​​method. The snap-fit ​​fixing between the main body and the heel body is automatically achieved by the disassembly and fixing component after the main body and the heel body are installed and rotated through the disassembly and assembly angle in the forward direction. The snap-fit ​​fixing between the main body and the heel body is released by the user after operating the disassembly and fixing component.

[0006] The beneficial effects of this utility model are as follows: Through a dual fixing mechanism of first tightening and then locking, the radial tightening force first eliminates the gap between the main body and the heel, preventing wobbling during walking. Then, the locking structure achieves axial locking, preventing the main body from falling off. Disassembly only requires operating a single operable part to release the locking mechanism, allowing the main body to be rotated out in the reverse direction, making the operation simple. This allows for easy replacement of heels when they are damaged or need to be replaced depending on the usage scenario. As a preferred method, a wedge-shaped mating surface with gradually varying circumferential thickness can be used to achieve tightening, with a spring-driven locking pin engaging with the corresponding recess to complete the locking. Alternatively, pressing a button can drive the locking pin out of the recess, releasing the locking mechanism, and then rotating in the reverse direction to loosen the tightening fit.

[0007] Furthermore, after the main body and the heel are installed, they can be rotated in one of the forward or reverse directions through the disassembly / reassembly angle to achieve expansion and fixation between the main body and the heel.

[0008] The design allows for expansion and fixation through bidirectional rotation, eliminating the risk of loosening due to incorrect installation direction. Users can quickly complete assembly without consciously identifying the direction, improving operational convenience and ensuring consistent assembly logic for both left and right heel units. As a preferred method, radially symmetrically distributed arc-shaped wedges and grooves can be used, with the wedge surfaces on both sides of the arc-shaped wedges gradually rising towards both ends to achieve bidirectional expansion. Another preferred method is to design the expansion mating surface as a bidirectionally gradually changing wave-shaped cam profile. During rotation, the interference between the cam peak and the groove bottom gradually increases, generating expansion force.

[0009] Furthermore, the disassembly / assembly angle is 90°.

[0010] Setting the assembly / disassembly angle to 90° balances operational range and structural compactness. Users only need a quarter turn to tighten or loosen, conforming to the normal turning range of the thumb and forefinger, making operation intuitive and effortless. It also facilitates the arrangement of related structures within the limited space of the heel body. As a preferred method, spiral guide ribs within a 90° range can be provided on the mating surface, gradually thickening from the starting position to the ending position, fully compressing upon rotation to 90°. Alternatively, a 90° arc indicator can be provided on the joint surface between the heel body and the main body to assist the user in determining the rotation position.

[0011] Furthermore, the disassembly and fixing assembly includes a snap-fit ​​platform and a snap-fit ​​groove that cooperates with it, and snap-fit ​​protrusions are provided at circumferentially symmetrical positions on the outer peripheral surface of the snap-fit ​​platform.

[0012] The engagement of the snap-fit ​​protrusion and the snap-fit ​​groove enables a simple operation of locking by rotation after insertion. The peripheral wall of the snap-fit ​​groove provides axial restraint to the snap-fit ​​protrusion, effectively preventing axial separation between the main body and the base. The circumferentially symmetrical design also ensures more balanced force distribution. As a preferred method, an inlet cone can be provided at the entry and exit points of the snap-fit ​​groove to achieve progressive locking. As another preferred method, the snap-fit ​​platform can be integrally molded onto the main body to improve tensile strength.

[0013] Furthermore, the snap-fit ​​groove is disposed on the main body, the snap-fit ​​platform is disposed on the base body, the main body is provided with a foolproof plate, the foolproof plate is provided with a foolproof groove, the cross section of the foolproof groove is the same as the cross section of the snap-fit ​​platform, and the position of the foolproof groove is the entry and exit position of the snap-fit ​​platform in the snap-fit ​​groove; the snap-fit ​​platform has a guide groove at its center, and the snap-fit ​​groove is provided with a guide protrusion corresponding to the guide groove.

[0014] The anti-misalignment groove restricts the entry position of the locking plate, preventing it from being inserted into the groove from the wrong position and thus ensuring proper locking. This avoids safety issues caused by assembly errors and guides the user to quickly align it to the correct position. After entering the groove correctly, the guide groove and guide protrusion work together to prevent the locking plate from disengaging from the groove and to serve as a center point for rotation within the groove, preventing random rotation. As a preferred method, the anti-misalignment plate and the main body can be integrally injection molded to ensure structural integrity. Alternatively, a metal insert can be used as the anti-misalignment plate to improve its wear resistance and service life.

[0015] Furthermore, when the snap-fit ​​platform rotates in the snap-fit ​​groove in one of the forward or reverse directions, its rotation angle is equivalent to the disassembly / assembly angle; when the snap-fit ​​platform rotates in the snap-fit ​​groove in the other direction, its rotation angle is less than the disassembly / assembly angle.

[0016] This foolproof design limits the incorrect rotation direction of the locking platform, ensuring that the user can only rotate it in the correct direction to the correct mounting angle for tightening and securing. This prevents structural damage or assembly failure due to excessive reverse rotation, thus improving assembly reliability. As a preferred method, a one-way limiting protrusion can be provided within the locking groove to prevent the locking platform from rotating in the wrong direction. Alternatively, directional markings can be provided on the mating surfaces of the locking platform and the locking groove to help the user quickly determine the rotation direction.

[0017] Furthermore, the snap-fit ​​groove is provided with a foolproof abutment and a limiting abutment in two rotational directions of the snap-fit ​​platform, respectively. Both the foolproof abutment and the limiting abutment can cooperate with the snap-fit ​​protrusion to prevent the snap-fit ​​platform from continuing to rotate in the same direction. The snap-fit ​​platform is provided with an anti-detachment slope between the snap-fit ​​groove's entry / exit position and the limiting abutment. The radial distance between the anti-detachment slope and the center of the snap-fit ​​groove is less than the radial distance between the snap-fit ​​protrusion and the center of the snap-fit ​​platform.

[0018] The anti-misalignment and limiting abutment precisely restrict the rotation angle of the locking platform, ensuring accurate rotation to the assembly / disassembly angle. The anti-detachment bevel prevents the locking protrusion from accidentally sliding out of the anti-misalignment groove during use, further enhancing the stability of the main connection. As a preferred option, the anti-misalignment and limiting abutment can be integrally molded with the locking groove to enhance structural strength. Alternatively, the anti-detachment bevel can be designed as a smoothly transitioning arc surface to reduce frictional resistance during rotation.

[0019] Furthermore, the disassembly and fixing assembly also includes a snap-fit ​​pressing component and a positioning groove disposed on an end face of the mating surface of the main body and the heel body. The positioning groove cooperates with the snap-fit ​​pressing component to achieve snap-fit ​​fixing between the main body and the heel body. The snap-fit ​​pressing component includes a pressing head that can unlock the snap-fit ​​pressing component from the positioning groove. Only the pressing head of the snap-fit ​​pressing component is exposed outside the main body and the heel body.

[0020] The engagement between the snap-fit ​​button and the positioning groove provides additional circumferential positioning after tightening, preventing the main body from naturally rotating and loosening due to continuous vibration or load changes. The design, with only the button head exposed, ensures convenient unlocking while maintaining the clean appearance of the main body. As a preferred option, the positioning groove can be designed as a hemispherical recess, with a spring-driven ball plunger at the inner end of the snap-fit ​​button. Alternatively, the button head can be positioned within a groove on the side wall of the main body, flush with its outer contour, to prevent accidental activation during daily use.

[0021] Furthermore, the disassembly and fixing assembly also includes a cover plate, and an active space is formed between the cover plate and the snap-fit ​​pressing member for the snap-fit ​​pressing member to move. The snap-fit ​​pressing member also includes a positioning post disposed in the active space, and a movable spring is sleeved on the positioning post. The cross-sectional height of the positioning post is smaller than the cross-sectional height of the active space.

[0022] The cover plate provides a stable installation space and guide for the snap-fit ​​pressing component and the movable spring, improving the repeatability of pressing and unlocking actions. The design of the positioning post height being less than the height of the movable space limits the pressing stroke, preventing excessive pressing from damaging the spring, while also reserving sufficient space for spring compression and reset. As a preferred method, the cover plate can be fixed to the opening of the internal cavity of the main body using snap-fit ​​fasteners, with guide ribs provided within the movable space. Alternatively, an annular groove can be provided on the outer circumference of the positioning post, allowing the end of the movable spring to be snapped into the groove for fixation.

[0023] Furthermore, the snap-fit ​​pressing component has a positioning protrusion corresponding to the positioning groove.

[0024] The positioning protrusion and positioning groove form a precise fit, automatically locking into place after the main body rotates to the correct position, providing a clear tactile feedback. Simultaneously, it effectively resists circumferential rotational forces, preventing the main body from loosening during use and improving connection reliability. As a preferred approach, the positioning protrusion can be designed as a trapezoidal protrusion with a guiding bevel, allowing it to automatically guide into the positioning groove. Alternatively, two sets of positioning protrusions and positioning grooves can be symmetrically positioned around the circumference to provide balanced anti-loosening force. Attached Figure Description

[0025] Figure 1 This is a perspective view of an embodiment of the present utility model; Figure 2 This is an exploded view of an embodiment of the present utility model; Figure 3 This is a schematic diagram of the card slot and anti-foolproof piece in an embodiment of this utility model; Figure 4 This is a partial cross-sectional view of an embodiment of the present utility model. Detailed Implementation

[0026] This utility model provides a replaceable shoe heel, such as... Figure 1-4As shown: The device includes a base 1, a main body 2, and a disassembly and fixing assembly 3 disposed between their mating surfaces. The base 1 and the main body 2 are detachably connected via the disassembly and fixing assembly 3. The disassembly and fixing assembly 3 includes a snap-fit ​​platform 31 integrally formed on the upper surface of the base 1 and a snap-fit ​​groove 32 correspondingly formed on the lower surface of the main body 2, which mates with the snap-fit ​​platform 31. Two radially outwardly protruding snap-fit ​​protrusions 311 are symmetrically positioned on the outer circumferential surface of the snap-fit ​​platform 31. The inner circumferential wall of the snap-fit ​​groove 32 forms a circumferential mating surface adapted to the snap-fit ​​protrusions 311, and the radial thickness of this mating surface gradually increases along the positive rotation direction. The main body 2 is also provided with a foolproof tab 324, which has a foolproof groove 325 with the same cross-section as the snap-fit ​​platform 31. The foolproof groove 325 is located at the entry / exit position of the snap-fit ​​platform 31 in the snap-fit ​​groove 32, allowing the snap-fit ​​protrusions 311 to enter the snap-fit ​​groove 32 through the foolproof groove 325. The snap-fit ​​platform 31 has a guide groove 312 at its center. A guide protrusion 326 is provided in the snap-fit ​​groove 32 corresponding to the guide groove 312. After the snap-fit ​​platform 31 enters the snap-fit ​​groove 32, the guide protrusion 326 engages with the guide groove 312 to facilitate the snap-fit ​​platform 31's rotation around the center of its engagement point. Inside the snap-fit ​​groove 32, in two rotational directions of the snap-fit ​​platform 31, a foolproof abutment 321 and a limiting abutment 322 are respectively provided. Both the foolproof abutment 321 and the limiting abutment 322 can abut against the snap-fit ​​protrusion 311 to restrict its continued rotation. An anti-detachment inclined surface 323 is provided between the snap-fit ​​platform 31 at the entry / exit position of the snap-fit ​​groove 32 and the limiting abutment 322. The radial distance between the anti-detachment inclined surface 323 and the center of the snap-fit ​​groove 32 is less than the radial distance between the snap-fit ​​protrusion 311 and the center of the snap-fit ​​platform 31.

[0027] The disassembly and fixing assembly 3 also includes a snap-fit ​​pressing member 33 and a positioning groove 34 formed on the lower surface of the body 1. The snap-fit ​​pressing member 33 is embedded in the receiving cavity inside the body 2. The receiving cavity is closed by a cover plate 35. A movable space 351 for the snap-fit ​​pressing member 33 to move is formed between the cover plate 35 and the snap-fit ​​pressing member 33. The snap-fit ​​pressing member 33 includes an integrally connected positioning post 331, a movable spring 332, a pressing head 333, and a positioning protrusion 334. The positioning post 331 is located in the movable space 351 and its cross-sectional height is smaller than that of the movable space 351. The movable spring 332 is sleeved on the positioning post 331, with one end abutting against the body of the snap-fit ​​pressing member 33 and the other end abutting against the lower surface of the cover plate 35. The pressing head 333 extends downward through the side surface of the body 2. The positioning protrusion 334 is formed on the top surface of the body of the snap-fit ​​pressing member 33 and matches the position and shape of the positioning groove 34.

[0028] The working principle of this embodiment is as follows: During assembly, the locking platform 31 of the heel body 1 is aligned with the locking groove 32 of the main body 2, so that the locking protrusion 311 is aligned with the anti-misalignment groove 325, and the heel body 1 is pushed axially to complete the insertion. At this time, the positioning protrusion 334 abuts against the joint end face of the heel body 1 and the main body 2, and the movable spring 332 is compressed. Hold the heel body 1 and rotate it 90° relative to the main body 2. The locking protrusion 311 moves along the anti-disengagement inclined surface 323 and gradually fits against the circumferential mating surface of the locking groove 32. When the locking protrusion 311 abuts against the limiting abutment platform 322, the positioning protrusion 334 is aligned with the positioning groove 34. Under the action of the restoring force of the movable spring 332, it is locked into the positioning groove 34, completing the double locking in both the circumferential and axial directions. During disassembly, press the exposed pressing head 333 to drive the positioning protrusion 334 downward to disengage from the positioning groove 34, rotate the heel body 1 in the opposite direction to the position of the anti-fooling groove 325, and then pull out the heel body 1 axially.

[0029] The above embodiments are merely one preferred embodiment of the present utility model. Ordinary changes and substitutions made by those skilled in the art within the scope of the present utility model's technical solution are all included within the protection scope of the present utility model.

Claims

1. A replaceable shoe heel comprising a main body, a heel body and a detachable fixing assembly for enabling detachable connection between the main body and the heel body, characterized in that: The disassembly and fixing component is disposed between the main body and the heel. The disassembly and fixing component allows the main body and the heel to be rotated through the disassembly and assembly angle after being installed to achieve expansion and fixing between the main body and the heel. After the disassembly and fixing component achieves expansion and fixing between the main body and the heel, it achieves snap-fit ​​fixing between the main body and the heel through a snap-fit ​​method. The snap-fit ​​fixing between the main body and the heel is automatically achieved by the disassembly and fixing component after the main body and the heel are installed and rotated through the disassembly and assembly angle in the forward direction. The snap-fit ​​fixing between the main body and the heel is released by the user after operating the disassembly and fixing component.

2. The replaceable heel according to claim 1, characterized in that: After the main body and the heel are installed, they can be rotated in one of the forward or reverse directions through the disassembly / reassembly angle to achieve expansion and fixation between the main body and the heel.

3. The replaceable heel according to claim 2, characterized in that: The disassembly / assembly angle is 90°.

4. The replaceable heel according to claim 1 or 2, characterized in that: The disassembly and fixing assembly includes a snap-fit ​​platform and a snap-fit ​​groove that mates with it, and snap-fit ​​protrusions are provided at circumferentially symmetrical positions on the outer peripheral surface of the snap-fit ​​platform.

5. The replaceable heel according to claim 4, characterized in that: The snap-fit ​​groove is provided on the main body, the snap-fit ​​platform is provided on the base body, the main body is provided with a foolproof plate, the foolproof plate is provided with a foolproof groove, the cross section of the foolproof groove is the same as the cross section of the snap-fit ​​platform, and the position of the foolproof groove is the entry and exit position of the snap-fit ​​platform in the snap-fit ​​groove; the snap-fit ​​platform has a guide groove at its center, and the snap-fit ​​groove is provided with a guide protrusion corresponding to the guide groove.

6. The replaceable heel according to claim 5, characterized in that: When the snap-fit ​​platform rotates in the snap-fit ​​groove in one of the forward or reverse directions, its rotation angle is equivalent to the disassembly / assembly angle; when the snap-fit ​​platform rotates in the snap-fit ​​groove in the other direction, its rotation angle is less than the disassembly / assembly angle.

7. The replaceable heel according to claim 6, characterized in that: The snap-fit ​​groove is provided with a foolproof abutment and a limiting abutment in two rotational directions of the snap-fit ​​platform, respectively. Both the foolproof abutment and the limiting abutment can cooperate with the snap-fit ​​protrusion to prevent the snap-fit ​​platform from continuing to rotate in the same direction. The snap-fit ​​platform is provided with an anti-detachment slope between the snap-fit ​​groove's entry / exit position and the limiting abutment. The radial distance between the anti-detachment slope and the center of the snap-fit ​​groove is less than the radial distance between the snap-fit ​​protrusion and the center of the snap-fit ​​platform.

8. The replaceable heel according to claim 4, characterized in that: The disassembly and fixing assembly also includes a snap-fit ​​pressing component and a positioning groove on one end face of the mating surface of the main body and the heel body. The positioning groove cooperates with the snap-fit ​​pressing component to achieve snap-fit ​​fixing between the main body and the heel body. The snap-fit ​​pressing component includes a pressing head that can unlock the snap-fit ​​pressing component from the positioning groove. Only the pressing head of the snap-fit ​​pressing component is exposed outside the main body and the heel body.

9. The replaceable heel according to claim 7, characterized in that: The disassembly and fixing assembly also includes a cover plate, and an active space is formed between the cover plate and the snap-fit ​​pressing member for the snap-fit ​​pressing member to move. The snap-fit ​​pressing member also includes a positioning post disposed in the active space, and a movable spring is sleeved on the positioning post. The cross-sectional height of the positioning post is smaller than the cross-sectional height of the active space.

10. The replaceable heel according to claim 8, characterized in that: The snap-fit ​​pressing component has a positioning protrusion corresponding to the positioning groove.

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