A simple heel-changing mechanism for heel-changing shoes

Abstract

The present invention relates to a simple heel-changing mechanism for heel-changing shoes, comprising a shell with a first accommodating cavity inside, a locking mechanism arranged in the first accommodating cavity, and a fixing pin located below the shell and passing through the bottom of the shell to be locked with the locking mechanism; the lower part of the fixing pin is provided with a connecting mechanism for connecting and fixing with the heel, and the upper part of the fixing pin passes through the bottom of the shell to be locked with the locking mechanism. The invention has a simple structure, is easy to operate, is convenient to use, has a more solid structure, and has a longer service life.

Description

Technical Field

[0001] The invention relates to the field of heel-changing shoes, in particular to a simple heel-changing mechanism for heel-changing shoes. Background Art

[0002] High heels are essential footwear for women. Wearing shoes of appropriate height on different occasions can better show the beauty of women. However, people cannot carry multiple pairs of shoes to meet this demand, and cannot replace them in time. Heel-changing shoes are born to meet such needs. Heel-changing shoes are shoes that can change the height of the heels, which can meet the wearing needs of ladies on different occasions. When using, only the heels need to be replaced. The heels are easy to carry and can be easily replaced anytime and anywhere to meet the needs. However, for the existing heel-changing shoes, the heel-changing structure is complicated, the appearance is not beautiful, it is not conducive to production, the production cost is high, and the heel-changing is not convenient. The structural strength after the heel-changing is not high, which is not conducive to use. Summary of the invention

[0003] In view of the existing deficiencies, the present invention provides a simple heel-changing mechanism for heel-changing shoes.

[0004] The technical solution adopted by the present invention to solve its technical problems is: a simple heel-changing mechanism for heel-changing shoes, comprising a shell with a first accommodating cavity inside, a locking mechanism arranged in the first accommodating cavity, and a fixing pin located below the shell and passing through the bottom of the shell to be locked with the locking mechanism; the lower part of the fixing pin is provided with a connecting mechanism for connecting and fixing with the heel, the upper part of the fixing pin passes through the bottom of the shell to be connected and locked with the locking mechanism, and the upper part of the fixing pin is provided with at least one axial locking groove with an arc-shaped cross-section; the locking mechanism comprises a locking upper cover and a locking bottom shell connected to each other and having a second accommodating cavity formed therein, and a locking bottom shell arranged in the second accommodating cavity parallel to the locking bottom shell and capable of A ferromagnetic movable part that moves up and down, the locking bottom shell and the movable part are correspondingly provided with a coaxial first through hole and a second through hole that can match the passing of a fixing pin, and the lower cross-section of the second accommodating cavity is an inverted trapezoidal structure; a plurality of steel balls of the same size that can match and engage in the axial locking groove are installed between the movable part and the locking bottom shell for limiting movement, and a spring coaxial with the first through hole is provided between the movable part and the locking upper cover; the upper end of the spring is connected to the locking upper cover, and the lower end is connected to the movable part, and the fixing pin can pass through the space formed by the shell, the first through hole, the second through hole and the plurality of steel balls in sequence from bottom to top, and then be inserted into the spring so that the steel ball and the axial locking groove are engaged and locked.

[0005] Preferably, the locking bottom shell is a barrel-shaped shell with an inverted trapezoidal cross-section, the movable part is a cylindrical structure, the bottom diameter of the locking bottom shell matches the diameter of the movable part, the steel ball is arranged in the movable part, the lower end of the spring abuts against the top of the steel ball, and the side wall of the movable part is provided with a plurality of movable part through holes corresponding to the plurality of steel balls for facilitating the movement of the steel balls.

[0006] Preferably, a first slit along the axial direction is provided on the side wall of the movable member, and the first slit is provided above any through hole of the movable member.

[0007] Preferably, an extension arm located above the steel ball extends radially inward from the inner wall of the movable member, and the lower end of the spring presses against the extension arm.

[0008] Preferably, three steel balls are provided, and three extension arms are provided, which are evenly spaced along the circumference of the movable part and the spacing distance is smaller than the diameter of the steel balls.

[0009] Preferably, the connection mechanism includes an external thread arranged at the lower part of the fixing pin and a nut threadedly connected to the fixing pin.

[0010] Preferably, the shell comprises a shell bottom shell and a shell top cover which are connected to form a first accommodating cavity, the locking mechanism is arranged in the shell bottom shell, and the upper part of the fixing pin passes through the bottom of the shell bottom shell and is locked with the locking mechanism.

[0011] Preferably, the movable member is further provided with a second slit communicated with the second through hole, and one or a plurality of second slits are provided along the circumference of the movable member at equal intervals.

[0012] Preferably, the shell is detachably connected to a heel, a heel groove matching the installation of the shell is provided on the top of the heel, and the fixing pin is detachably connected to the bottom of the heel groove.

[0013] Preferably, the housing is a T-shaped housing.

[0014] The beneficial effects of the present invention are as follows: the invention has a simple structure, the fixing pin is installed on the heel, the shell is installed on the midsole of the shoe, and then the two are locked by utilizing the engagement between the limiting movable steel ball and the axial locking groove. No complicated structure is required in the heel, which simplifies the structure, maintains the stability of the heel structure, and is durable. When the heel needs to be replaced, it is only necessary to use a magnet to magnetically attract the movable part, and the movable part moves upward, thereby increasing the movable space of the steel ball. The steel ball slides out of the axial locking groove to realize unlocking. The operation is convenient and easy to use. In practice, it is only necessary to carry the heel to be replaced and the magnet. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1It is a schematic structural diagram of a cross-section of an embodiment of the present invention;

[0016] Figure 2 is a schematic structural diagram of an embodiment of the present invention;

[0017] Figure 3 It is a schematic structural diagram of the locking mechanism and the fixing pin of an embodiment of the present invention;

[0018] Figure 4 is a schematic diagram of the exploded structure of the locking mechanism and the fixing pin of an embodiment of the present invention;

[0019] Figure 5 is a schematic structural diagram of a fixing pin according to an embodiment of the present invention;

[0020] Figure 6 is a schematic structural diagram of a movable part in an embodiment of the present invention;

[0021] Figure 7 It is a structural schematic diagram of an embodiment of the present invention and a heel and a sole assembly;

[0022] Figure 8 Schematic diagram of the structure of the heel of the embodiment of the present invention

[0023] Names and serial numbers of parts in the figure: 1-shell 10-first accommodating cavity 11-shell bottom shell 12-shell upper cover 2-locking mechanism 20-second accommodating cavity 21-locking upper cover 22-locking bottom shell 23-movable part 220-first through hole 230-second through hole 231-movable part through hole 232-first slit 233-extension arm 234-second slit 3-fixing pin 30-axial locking groove 31-external thread 32-nut 4-steel ball 5-spring 6-heel 60-heel groove. DETAILED DESCRIPTION

[0024] In order to more clearly illustrate the purpose, technical solutions and advantages of the embodiments of the present invention, the present invention will be further described in conjunction with the accompanying drawings and embodiments below for a clear and complete description. Obviously, the described embodiments are partial embodiments of the present invention, rather than all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work belong to the protection scope of the present invention. In addition, the directional terms mentioned in the present invention, such as "up", "down", "front", "back", "left", "right", "inside", "outside", etc., are only referenced to the directions of the attached diagrams. The directional terms used are for better and clearer explanation and understanding of the present invention, rather than indicating or implying the orientation that the present invention must have, and therefore cannot be understood as limitations on the present invention.

[0025] Embodiments of the present invention Figures 1 to 8As shown in the figure, a simple heel-changing mechanism for heel-changing shoes comprises a shell 1 with a first accommodating cavity 10 inside, a locking mechanism 2 arranged in the first accommodating cavity 10, and a fixing pin 3 located below the shell 1 and passing through the bottom of the shell 1 to be locked with the locking mechanism 2. In actual application, the fixing pin 3 is installed on the heel, and the shell 1 is installed on the midsole of the shoe. The fixing pin 3 adopts a rigid pin. When in use, the fixing pin 3 passes through the bottom of the shell 1 and is inserted into the first accommodating cavity 10 to be locked with the locking mechanism 2, thereby connecting and fixing the heel and the midsole of the shoe to complete the assembly of the shoe. When different heights need to be replaced, When the heel is in a certain height, the fixing pin 3 and the locking mechanism 2 can be unlocked to remove the heel from the midsole, and then the heel of the required height can be replaced. As for the shape of the shell 1, the part of the top of the commonly used heel that contacts the midsole corresponds to the position of the heel, and the size is basically unchanged, and the change is the lower supporting part. In order to avoid affecting the beauty and strength of the heel, the shell 1 is a T-shaped structure, that is, the upper part is large and the lower part is small. The lower part can choose the corresponding size according to the thickness of the heel, and the upper part can keep the contact part of the heel with the midsole unchanged, which is convenient for connection and fixation with the heel. At the same time, it can also better share the force applied to the heel, maintain the stability of the structure, and make the heel durable; the lower part of the fixing pin 3 is provided with a connecting mechanism for connecting and fixing with the heel, and the fixing pin 3 is connected and fixed to the heel through the connecting structure, and a structure matching the connecting structure of the fixing pin 3 is provided on the heels of different heights. At this time, the connecting mechanism includes an external thread 31 provided at the lower part of the fixing pin 3, a nut 32 threadedly connected to the fixing pin 3, and a corresponding through hole is provided on the heel, and the fixing pin 3 is inserted from the upper end of the through hole on the heel, and the nut 32 is inserted from the through hole on the heel The lower part is threadedly connected with the fixing pin 3, so as to connect the fixing pin 3 and the heel, or the lower part of the fixing pin 3 is provided with an external thread 31, and the heel is provided with an internal thread matching the external thread 31, and the fixing pin 3 is connected to the heel through threaded connection, and the upper part of the fixing pin 3 passes through the bottom of the shell 1 and is connected and locked with the locking mechanism 2, and the upper part of the fixing pin 3 is provided with at least one axial locking groove 30 with an arc-shaped cross section, that is, the cross section of the axial locking groove 30 is arc-shaped, and each of them is around the outer wall of the fixing pin 3 in the radial direction, and when there are multiple axial locking grooves, they are arranged in parallel and spaced along the axial direction;The locking mechanism 2 includes a locking upper cover 21 and a locking bottom shell 22 which are connected to form a second accommodating cavity 20, and a ferromagnetic movable part 23 which is arranged in the second accommodating cavity 20 and is parallel to the locking bottom shell 22 and can move up and down. The lower cross-section of the second accommodating cavity 20 is an inverted trapezoidal structure, which means that when a certain component moves from bottom to top in the lower part of the second accommodating cavity 20, it has a larger movable space in the horizontal direction. The locking bottom shell 22 and the movable part 23 are correspondingly provided with a coaxial first through hole 220 and a second through hole 230 which can match the fixing pin 3 to pass through, that is, the first through hole 220 is arranged on the locking bottom shell 22, and the second through hole 230 is arranged on the movable part 23. The first through hole 220 and the second through hole 230 are arranged in parallel. The sizes of their apertures are matched with the sizes of the fixing pins 3, that is, they are slightly larger than the sizes of the fixing pins 3, so as to avoid the problems that the fixing pins 3 shake in the apertures that are too large and the fixing pins 3 cannot be inserted in the apertures that are too small; a plurality of steel balls 4 of the same size that can match and fit in the axial locking grooves 30 are installed between the movable member 23 and the locking bottom shell 22, and a spring 5 coaxial with the first through hole 220 is arranged between the movable member 23 and the locking upper cover 21. At this time, the spring 5, the first through hole 220, and the second through hole 230 are on the same axis, and a plurality of steel balls 4 are surrounded to form a space, such as two steel balls form a clamping structure, three steel balls form a hollow triangular structure, four steel balls form a hollow quadrilateral structure, etc.;The upper end of the spring 5 is connected to the locking cover 21, and the lower end is connected to the movable member 23. The fixing pin 3 can be inserted into the spring 5 through the space formed by the housing 1, the first through hole 220, the second through hole 230, and the plurality of steel balls 4 from bottom to top, so that the steel balls 4 and the axial locking grooves 30 are engaged and locked. In order to prevent the fixing pin 3 from being subjected to excessive force when inserted into the locking mechanism 2 and causing impact damage to the locking cover 21, a cover through hole coaxial with the first through hole 220 is provided on the locking cover 21 to avoid the upper end of the fixing pin 3. When in use, first install the fixing pin 3 on the heel to form an integral whole with the heel, install the shell 1 on the midsole of the shoe, and the locking mechanism 2 becomes an integral whole with the sole. Then, pass the fixing pin 3 through the lower part of the shell 1, pass through the first through hole 220, the second through hole 230 in sequence, and insert into the space enclosed by the plurality of steel balls 4. The fixing pin 3 continues to be inserted upward, and the limiting movable steel ball 4 is engaged in the axial locking groove 30. In the vertical direction, the spring 5 and the movable part 23 limit the steel ball 4 on the inner surface of the locking bottom shell 22. In the horizontal direction, the locking bottom shell 22 limits the horizontal movement of the steel ball 4, thereby fixing the position of the steel ball 4. When the heel 3 is pulled downward, the force on the steel ball 4 is in the downward and horizontal directions, but since the position is fixed, these two forces cannot make it move, so the fixing pin 3 and the locking mechanism 2 are locked, and the installation of the fixing pin 3 in the heel does not require a complex structure, which maintains the stability of the heel structure and is durable. When the heel needs to be replaced, it is only necessary to use a magnet to magnetically attract the movable part 23, and the movable part 23 moves upward. The steel ball 4 is subjected to an upward force, and the upper space increases the activity space of the steel ball 4. The steel ball 4 slides out of the axial locking groove 30 to achieve unlocking. The operation is convenient and easy to use. In practice, only the heel to be replaced and the magnet need to be carried. ;

[0026] Further improvements, such as Figure 1 , Figure 3 and Figure 4 As shown in , the locking bottom shell 22 is a barrel-shaped shell with an inverted trapezoidal cross-section. The inverted trapezoidal shape means that its upper part is larger than the lower part. When the movable part 23 moves upward, the activity space of the steel ball 4 is increased, and the steel ball 4 can be separated from the engagement with the axial locking groove 30. When it moves downward, the activity space of the steel ball 4 is reduced, and the steel ball 4 cannot be separated from the axial locking groove 30, thereby ensuring the stability of the engagement structure. The movable part 23 is a cylindrical structure, and the bottom surface diameter of the locking bottom shell 22 matches the diameter of the movable part 23. The steel ball 4 is arranged in the movable part 23, and the lower end of the spring 5 abuts against the top of the steel ball 4. Figure 4 and Figure 6As shown in , the side wall of the movable part 23 is provided with a plurality of movable part through holes 231 corresponding to the plurality of steel balls 4 for facilitating the movement of the steel balls 4, that is, the movable part 23 moves downward so that its bottom surface can abut against the inner bottom surface of the locking bottom shell 22. After the two abut against each other, since the diameters of the two match, the steel balls 4 are completely confined in the barrel of the movable part 23, and the steel balls 4 can form a stable locking structure with the fixing pin 3. When locked and used, the fixing pin 3 is inserted between the plurality of steel balls 4, which will exert an upward and horizontal force on the steel balls 4, thereby exerting an upward pressure on the spring 5. The spring 5 is compressed and exerts a downward force on the steel balls 4 at the same time. The horizontal force exerted on the steel balls 4 moves the steel balls 4 in the horizontal direction. When the movable part 23 does not move upward, the space for the steel balls 4 to move in the horizontal direction is limited by the locking bottom shell 22 and cannot move. The fixing pin 3 continues to be inserted upward, and the movable part 23 is also forced to move upward, which expands the space for the steel balls 4 to move in the horizontal direction. The steel balls 4 move toward the movable part 23. When the movable part 23 moves outside, the fixing pin 3 is pulled downward, and the space for the steel ball 4 to move outside the movable part 23 becomes smaller. When it corresponds to the axial locking groove 30, it will slide into the axial locking groove 30 to form an engagement with the fixing pin 3, thereby locking the two. When unlocking, the movable part 23 is attracted by the magnet, and the movable part 23 moves upward. The horizontal movement space of the steel ball 4 increases and slides out of the movable part 23, breaking away from the engagement with the axial locking groove 30, thereby breaking away from the engagement with the fixing pin 3 and achieving unlocking, so that the heel can be replaced, which is convenient and quick to use. At this time, in order to avoid damage to the movable part 23 when the steel ball 4 moves horizontally outside the movable part 23, a first slit 232 along the axial direction is provided on the side wall of the movable part 23. The first slit 232 is provided above any one of the movable part through holes 231. The slit buffers the radial force on the movable part 23, thereby ensuring the firmness of the structure of the movable part 23. In order to prevent the upward force of the steel ball 4 from being unable to be buffered when the upward movement space of the steel ball 4 becomes larger, thereby causing the locking structure 2 to be unstable, the inner wall of the movable part 23 extends radially inward with an extension arm 233 located above the steel ball 4, and the lower end of the spring 5 presses on the extension arm 233, so that the spring 5 will not be directly acted upon by the steel ball 4. After the steel ball 4 is acted upon by the fixing pin 3, the steel ball 4 moves, and a force is applied after the steel ball 4 touches the extension arm 233. On the extension arm 233, that is, on the movable part 23, the movable part 23 moves and then applies a force on the spring 4, forming a force transfer process. The distance from the bottom of the extension arm 233 to the inner bottom surface of the movable part 23 matches the diameter of the steel ball 4, that is, there is a gap between the bottom of the extension arm 233 and the top of the steel ball 4, ensuring that the steel ball 4 can smoothly engage or disengage with the axial locking groove 30, and the distance from the bottom of the extension arm 233 to the inner bottom surface of the movable part 23 is greater than the diameter of the steel ball 4.Preferably, three steel balls 4 are provided, and the three form a stable triangular structure to ensure the stability of the lock. The three extension arms 233 are provided and are evenly spaced along the circumference of the movable part 23 and the interval distance is smaller than the diameter of the steel ball 4. The steel ball 4 moves between the extension arm 233 defined by the steel ball 4 and the inner bottom surface of the movable part 23, thereby preventing the steel ball 4 from falling out of the gap between the extension arms 233.

[0027] Further improvements, such as Figure 1 and Figure 2 As shown in the figure, the shell 1 includes a shell bottom shell 11 and a shell upper cover 12 which are connected to form a first accommodating cavity 10. The locking mechanism 2 is arranged in the shell bottom shell 11. The upper part of the fixing pin 3 passes through the bottom of the shell bottom shell 11 and is locked with the locking mechanism 2, which facilitates the installation of the locking mechanism 2. After being installed on the heel, multiple stress points are formed, such as the top of the heel, the top of the shell upper cover, etc., to maintain sufficient strength of the structure and extend the service life.

[0028] Further improvements, such as Figure 4 and Figure 6 As shown in the figure, the movable part 23 is also provided with a second slit 234 connected with the second through hole 230. The second slit 234 is provided with one or multiple slits 234 are provided at equal intervals along the circumference of the movable part 23. The setting of the slit can buffer the force applied to the movable part 23 when the fixing pin 3 passes through the second through hole 230, thereby maintaining the strength of the movable part structure. At the same time, it can also enable the fixing pin and the second through hole to be installed with an interference fit, thereby maintaining the stability of the installation structure, that is, maintaining the stability of the connection between the heel and the sole.

[0029] Further improvements, such as Figure 7 and Figure 8 As shown in the figure, the housing 1 is detachably connected with a heel 6, and the top of the heel 6 is provided with a heel groove 60 matching the housing 1, and the fixing pin 3 is detachably connected to the bottom of the heel groove 60, so that the heel 6 is set to different heights, and they can also be carried around, which is convenient for replacement and use. After the housing 1 is installed in the heel groove 60, the sole and the heel 6 are connected together, and the part connected to the sole is the top of the housing 1 and the top of the side wall of the heel groove 60, and bears the force applied to the heel by the foot during use. At this time, the fixing pin 3 is also installed in the heel groove 60, and a through hole can be set at the bottom of the heel groove 60, and the fixing pin 3 can be fixed by threaded connection of a nut and the fixing pin 3, or a threaded hole can be set at the bottom of the heel groove 60, or a clamping structure can be set at the bottom of the heel groove 60 to clamp the fixing pin 3 therein.

[0030] It should be understood that those skilled in the art may make improvements or changes based on the above description, and all such improvements and changes should fall within the scope of protection of the appended claims of the present invention.

Claims

1. A simple heel-changing mechanism for heel-changing shoes, characterized in that: The shoe shoe comprises a shell with a first accommodating cavity formed therein, a locking mechanism disposed in the first accommodating cavity, and a fixing pin located below the shell and passing through the bottom of the shell to be locked with the locking mechanism; the lower part of the fixing pin is provided with a connecting mechanism for connecting and fixing with the heel, the upper part of the fixing pin passes through the bottom of the shell to be connected and locked with the locking mechanism, and the upper part of the fixing pin is provided with at least one axial locking groove with an arc-shaped cross-section; the locking mechanism comprises a locking upper cover and a locking bottom shell connected to each other and forming a second accommodating cavity therein, a ferromagnetic movable part disposed in the second accommodating cavity and parallel to the locking bottom shell and capable of moving up and down, and the locking The bottom shell and the movable part are correspondingly provided with a coaxial first through hole and a second through hole that can match the passing of the fixing pin, and the lower cross-section of the second accommodating cavity is an inverted trapezoidal structure; a plurality of steel balls of the same size that can match and engage in the axial locking groove are installed between the movable part and the locking bottom shell for limiting movement, and a spring coaxial with the first through hole is provided between the movable part and the locking upper cover; the upper end of the spring is connected to the locking upper cover, and the lower end is connected to the movable part, and the fixing pin can pass through the space formed by the shell, the first through hole, the second through hole and the plurality of steel balls from bottom to top in sequence, and then be inserted into the spring to engage and lock the steel ball and the axial locking groove.

2. The simple heel-changing mechanism for heel-changing shoes according to claim 1, characterized in that :The locking bottom shell is a barrel-shaped shell with an inverted trapezoidal cross-section, the movable part is a cylindrical structure, the bottom diameter of the locking bottom shell matches the diameter of the movable part, the steel ball is arranged in the movable part, the lower end of the spring abuts against the top of the steel ball, and the side wall of the movable part is provided with a plurality of movable part through holes corresponding to the plurality of steel balls for facilitating the movement of the steel balls.

3. The simple heel-changing mechanism for heel-changing shoes according to claim 2, characterized in that A first slit along the axial direction is arranged on the side wall of the movable part, and the first slit is arranged above any one of the through holes of the movable part.

4. The simple heel-changing mechanism for heel-changing shoes according to claim 2, characterized in that The inner wall of the movable part extends radially inwardly to have an extension arm located above the steel ball, and the lower end of the spring presses against the extension arm.

5. The simple heel-changing mechanism for heel-changing shoes according to claim 4, characterized in that : There are three steel balls, and there are three extension arms, which are evenly spaced along the circumference of the movable part and the spacing distance is less than the diameter of the steel balls.

6. The simple heel-changing mechanism for heel-changing shoes according to claim 1, characterized in that :The connecting mechanism includes an external thread arranged at the lower part of the fixing pin and a nut threadedly connected to the fixing pin.

7. The simple heel-changing mechanism for heel-changing shoes according to claim 1, characterized in that The shell comprises a shell bottom shell and a shell upper cover which are connected to form a first accommodating cavity, the locking mechanism is arranged in the shell bottom shell, and the upper part of the fixing pin passes through the bottom of the shell bottom shell and is locked with the locking mechanism.

8. The simple heel-changing mechanism for heel-changing shoes according to claim 1, characterized in that The movable member is also provided with a second slit connected to the second through hole, and one or a plurality of second slits are provided along the circumference of the movable member at equal intervals.

9. The simple heel-changing mechanism for heel-changing shoes according to claim 1, characterized in that :The shell is detachably connected to the heel, the top of the heel is provided with a heel groove matching the installation shell, and the fixing pin is detachably connected to the bottom of the heel groove.

10. The simple heel-changing mechanism for heel-changing shoes according to claim 1, characterized in that :The shell is a T-shaped structure shell.

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