Lace knob

Abstract

The utility model relates to the technical field of footwear accessories, and disclose a shoelace knob, including base, check piece, connecting portion, locating seat, ratchet link piece and upper cover, the connecting portion is located between check piece and locating seat, check piece and locating seat joint, locating seat and base joint, the ratchet link piece is formed the engagement of being covered on check piece, the upper cover and ratchet link piece and locating seat are respectively jointed, the utility model discloses a support piece is additionally arranged in the check piece deformation groove of shoelace knob, can provide elastic support for check piece, avoid the elastic attenuation caused by the plastic independent deformation, significantly prolong the overall service life of check piece and knob, and each component realizes high-precision cooperation through jointing, embedding reduces the use gap, improves locking stability, prevents ratchet link piece and other unexpected displacement, the upper cover friction ring improves the operating friction of it, the utility model effectively improves the overall service life and use reliability of knob.

Description

Technical Field

[0001] This utility model relates to the field of footwear accessories technology, and in particular to shoelace knobs. Background Technology

[0002] In the footwear industry, quick-lock laces knobs are widely used in athletic shoes, performance shoes, and other footwear because they allow for easy tightening and loosening of laces. By operating the knob, the tightness of the laces can be quickly adjusted, improving the efficiency of putting on and taking off shoes and the fit of the feet.

[0003] Existing shoelace knobs are mostly multi-part assembly structures; however, their overall lifespan is significantly insufficient. Their key elastic limiting mechanism often employs a design with deformation grooves on the main component. Relying on the elasticity of the plastic material itself, the elastic arm on the limiting component is compressed when the knob button is pulled up or pushed down, and completes elastic deformation through the space of the deformation groove to achieve limiting and click feedback. However, the fatigue resistance of plastic material is limited. After repeated compression and rebound, the elastic arm's elasticity gradually diminishes, not only weakening the operating feel but also making it difficult to continuously and effectively limit the ratchet assembly due to insufficient elasticity. This can easily cause the ratchet assembly to move upwards unexpectedly. Furthermore, besides the elastic limiting mechanism, the overall locking stability of the knob's other mating components is not good enough, failing to meet consumers' needs for long-term reliable use of shoe accessories. Utility Model Content

[0004] This utility model addresses the shortcomings of existing technologies by providing a shoelace knob. By adding an elastic support to the limiting component and optimizing the matching structure of each component, the elastic life of the limiting component and the overall reliability of the knob are effectively improved.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: The shoelace knob includes a base, a limiting member, a connecting part, a positioning seat, a ratchet connector, and a top cover. The connecting part is located between the limiting member and the positioning seat. The limiting member is engaged with the positioning seat, and the positioning seat is engaged with the base. The ratchet connector is fitted onto the limiting member to form a locking mechanism. The top cover is engaged with both the ratchet connector and the positioning seat. The limiting member is provided with a support member, which provides elastic support to the limiting member to extend its service life.

[0006] Preferably, the limiting member includes a vertical deformable end, the deformable end is provided with a deformable groove, and the support member is installed in the deformable groove; The support member includes an arc-shaped bottom and a support end extending from the arc-shaped bottom. The support end is a deformable structure and is located in a deformation groove. By using the deformable support end to assist the deformation of the limiting member, the service life of the limiting member can be extended.

[0007] Preferably, the size of the arc-shaped bottom is larger than the size of the deformation groove, and the bottom of the limiting member is provided with a guide groove that connects with the deformation groove. The support member is installed into the deformation groove through the guide groove. The arc-shaped bottom being larger than the deformation groove enables the support member to be installed and limited. The guide groove assists the support member in quick and accurate assembly, improving installation stability.

[0008] Preferably, the deformable end has a snap-fit ​​protrusion on its inner side, and the support end has a snap-fit ​​hole. The snap-fit ​​protrusion snaps into the snap-fit ​​hole, and the support end fits against the inner side of the deformable end to provide support. The limiting member also includes a symmetrically arranged positioning end and a snap-fit ​​end. The snap-fit ​​protrusion and the snap-fit ​​hole cooperate to fix the support member and the deformable end, ensuring that the support end fits stably against the deformable end and that its supporting force is continuously effective. At the same time, the positioning end and the snap-fit ​​end are reserved structures for the limiting member to cooperate with other components.

[0009] Preferably, the base is provided with an installation groove, the installation groove is provided with a fitting groove, an elastic block, a limiting block and an abutting end, the positioning end is provided with a groove, and the edge of the positioning end can pass over the elastic block, so that the elastic block is located in the groove of the positioning end. The fitting groove, elastic block and other structures in the mounting groove of the base cooperate with the groove of the positioning end, so that the positioning seat and the base are more accurately positioned after assembly. The elastic block is stuck in the groove to prevent displacement and improve its connection stability.

[0010] Preferably, the positioning seat is provided with a fitting block, an elastic locking block, a positioning block, and a limiting part. The fitting block can rotate into the fitting groove and engage with it. The elastic locking block engages with the locking end of the limiting part. The positioning block is located in the groove of the positioning end. The limiting part is located at the upper end of the base to limit the positioning seat. The positioning seat engages with the base and the limiting part respectively through the fitting block and the elastic locking block. The positioning block assists in positioning, and the limiting part limits the position, thereby strengthening the connection of each component.

[0011] Preferably, the connecting part is provided with a meshing toothed ring and a through hole for the shoelace to pass through. The deformable end of the limiting member passes through the middle through hole of the connecting part. The connecting part can rotate relative to the limiting member and the positioning seat. The meshing toothed ring realizes the transmission between the connecting part and the ratchet connecting member. The through hole allows the shoelace to be inserted and fixed. The deformable end passing through the middle through hole of the connecting part ensures that the connecting part can rotate flexibly, providing structural support for the winding and tightening of the shoelace.

[0012] Preferably, the positioning seat is further provided with a locking tooth ring, and the ratchet connector is provided with an elastic end, a mating groove, a locking part, a central hole, and a second locking tooth ring located at the bottom. The end of the elastic end is provided with locking teeth, which can engage with the locking tooth ring of the positioning seat; the second locking tooth ring can engage with the first locking tooth ring of the connecting part, and the central hole can pass through the limiting end on the deformable end. The locking teeth and the locking tooth ring cooperate to realize the one-way limiting of the ratchet connector, the second locking tooth ring cooperates with the first locking tooth ring to transmit power, and the central hole passes through the limiting end to realize the transmission separation and control the tightness switching of the shoelace.

[0013] Preferably, the positioning seat is provided with limiting rings on both the upper and lower sides, and a limiting space is formed between the two limiting rings. The outer ring of the upper cover is provided with a friction ring, and the lower inner edge of the upper cover is provided with an elastic locking block three. The elastic locking block three engages with the limiting ring above the positioning seat, and the elastic locking block three is located in the limiting space. The limiting ring forms a limiting space to restrict the displacement of the upper cover, the friction ring increases the operating friction, and the elastic locking block three ensures the stable movement of the upper cover and optimizes the operating feel.

[0014] Preferably, a mating block and an elastic locking block are provided below the top cover. The mating block engages with the mating groove of the ratchet connector, and the elastic locking block engages with the locking part of the ratchet connector. The mating block ensures that the top cover and the ratchet connector rotate synchronously, and the elastic locking block fixes the connection between the two, thereby improving operational reliability.

[0015] Compared with the prior art, the present invention has the following beneficial effects: This invention adds a support member to the deformation groove of the limiting member of the shoelace knob, which provides elastic support for the limiting member, avoids elastic decay caused by individual deformation of the plastic, and significantly extends the service life of the limiting member and the knob as a whole. Moreover, the components achieve high-precision fit through snap-fit ​​and interlocking, reducing usage gaps, improving locking stability, and preventing unexpected displacement of ratchet connectors, etc. The friction ring on the upper cover increases the operating friction. This invention effectively improves the overall service life and reliability of the knob. Attached Figure Description

[0016] To more clearly illustrate the technical solutions in the embodiments of this utility model, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0017] Figure 1 This is a schematic diagram of the overall structure of this utility model; Figure 2 This is an exploded view of part of the structure of this utility model; Figure 3This is a separate view of the positioning seat, limiting member, and ratchet connecting member of this utility model; Figure 4 The bottom view shows the positioning seat, limiting member, and ratchet connecting member of this utility model separated. Figure 5 This is a view showing the engagement of the limiting component and the positioning seat in this utility model; Figure 6 This is a separate view of the support member and the limiting member of this utility model; Figure 7 This is a view showing the positioning seat and base snapping together according to this utility model; Figure 8 This is a structural view of the upper cover of this utility model; Figure 9 This is a cross-sectional view of the present invention.

[0018] Drawing number explanation: 1. Base; 11. Fitting groove; 12. Elastic block; 13. Limiting block; 14. Abutting end; 2. Limiting component; 21. Deformation end; 22. Limiting end; 23. Support component; 231. Arc-shaped bottom; 232. Supporting end; 233. Snap-fit ​​hole; 24. Snap-fit ​​protrusion; 25. Positioning end; 26. Snap-fit ​​end; 27. Guide groove; 3. Connecting part; 31. Engaging gear ring one; 32. 4. Perforation; 41. Positioning seat; 42. Fitting block; 43. Elastic locking block one; 44. Engaging tooth ring; 45. Limiting ring; 46. Limiting part; 5. Positioning block; 5. Ratchet connector; 51. Elastic end; 52. Engaging tooth; 53. Engaging tooth ring two; 54. Mating groove; 55. Engaging part; 6. Top cover; 61. Friction ring; 62. Mating block; 63. Elastic locking block two; 64. Elastic locking block three. Detailed Implementation

[0019] The present invention will now be described in further detail with reference to the accompanying drawings.

[0020] The following description is intended to disclose the present invention so that those skilled in the art can implement it. The preferred embodiments described below are merely examples, and other obvious modifications will be apparent to those skilled in the art. The basic principles of the present invention defined in the following description can be used in other embodiments, modifications, improvements, equivalents, and other technical solutions that do not depart from the spirit and scope of the present invention.

[0021] Those skilled in the art should understand that in the disclosure of this utility model, the terms "longitudinal", "lateral", "up", "down", "left", "right", "front", "rear", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or position based on the orientation or positional relationship shown in the accompanying drawings. They are only for the purpose of simplifying the description of this utility model and do not indicate or imply that the device or component referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, the above terms should not be construed as limitations on this utility model.

[0022] It is understood that the term "a" should be understood as "at least one" or "one or more", that is, in one embodiment, the number of an element can be one, while in another embodiment, the number of the element can be multiple, and the term "a" should not be understood as a limitation on the number.

[0023] Example: Please see Figure 1-9 The shoelace knob includes a base 1, a limiting member 2, a connecting part 3, a positioning seat 4, a ratchet connector 5, and a top cover 6. The connecting part 3 is located between the limiting member 2 and the positioning seat 4. The limiting member 2 is engaged with the positioning seat 4, and the positioning seat 4 is engaged with the base 1. The ratchet connector 5 is fitted onto the limiting member 2 to form an engagement. The top cover 6 is engaged with the ratchet connector 5 and the positioning seat 4 respectively. The limiting member 2 is provided with a support member 23, which can provide elastic support to the limiting member 2 to extend its service life.

[0024] The limiting member 2 includes a vertical deformable end 21 with a deformable groove. The support member 23 is installed in the deformable groove. The support member 23 includes an arc-shaped bottom 231 and a support end 232 extending from the arc-shaped bottom 231. The support end 232 is a deformable structure and is located in the deformable groove. The deformation of the limiting member 2 is assisted by the deformable support end 232, which can extend the service life of the limiting member 2. The support member 23 is made of a metal material with good elastic deformation.

[0025] The size of the arc-shaped bottom 231 is larger than the size of the deformation groove. The bottom of the limiting member 2 is provided with a guide groove 27 that connects with the deformation groove. The support member 23 is installed into the deformation groove through the guide groove 27. The arc-shaped bottom 231 is larger than the deformation groove to realize the installation limit of the support member 23. The guide groove 27 assists the support member 23 to be quickly and accurately assembled, improving the installation stability.

[0026] The inner side of the deformable end 21 is provided with a snap-fit ​​protrusion 24, and the support end 232 is provided with a snap-fit ​​hole 233. The snap-fit ​​protrusion 24 snaps into the snap-fit ​​hole 233, and the support end 232 fits against the inner side of the deformable end 21 to form support. The limiting member 2 also includes a symmetrically arranged positioning end 25 and a snap-fit ​​end 26. The snap-fit ​​protrusion 24 and the snap-fit ​​hole 233 cooperate to fix the support member 23 and the deformable end 21, ensuring that the support end 232 fits stably against the deformable end 21 and its supporting force is continuously effective. At the same time, the positioning end 25 and the snap-fit ​​end 26 are reserved structures for the limiting member 2 to cooperate with other components.

[0027] The base 1 is provided with an installation groove, which contains a fitting groove 11, an elastic block 12, a limiting block 13, and an abutment end 14. The positioning end 25 is provided with a groove, and the edge of the positioning end 25 can pass over the elastic block 12, so that the elastic block 12 is located in the groove of the positioning end 25. The fitting groove 11, elastic block 12 and other structures in the installation groove of the base 1 cooperate with the groove of the positioning end 25, so that the positioning seat 4 and the base 1 are more accurately positioned after assembly. The elastic block 12 is inserted into the groove to prevent displacement and improve its connection stability.

[0028] The positioning seat 4 is provided with a fitting block 41, an elastic locking block 42, a positioning block 46, and a limiting part 45. The fitting block 41 can rotate into the fitting groove 11 and fit into it. The elastic locking block 42 engages with the locking end 26 of the limiting member 2. The positioning block 46 is located in the groove of the positioning end 25. The limiting part 45 is located at the upper end of the base 1 to limit the positioning seat 4. The positioning seat 4 engages with the base 1 and the limiting member 2 respectively through the fitting block 41 and the elastic locking block 42. The positioning block 46 assists in positioning, and the limiting part 45 limits the position, thereby strengthening the connection of each component.

[0029] The connecting part 3 is provided with a meshing toothed ring 31 and a through hole 32 for the shoelace to pass through. The deformable end 21 of the limiting member 2 passes through the middle through hole of the connecting part 3. The connecting part 3 can rotate relative to the limiting member 2 and the positioning seat 4. The meshing toothed ring 31 realizes the transmission between the connecting part 3 and the ratchet connecting member 5. The through hole 32 allows the shoelace to be inserted and fixed. The deformable end 21 passes through the middle through hole of the connecting part 3 to ensure that the connecting part 3 can rotate flexibly, providing structural support for the winding and tightening of the shoelace.

[0030] The positioning seat 4 is also provided with a locking tooth ring 43, and the ratchet connector 5 is provided with an elastic end 51, a mating groove 54, a locking part 55, a central hole, and a second locking tooth ring 53 located at the bottom. The end of the elastic end 51 is provided with a locking tooth 52, which can engage with the locking tooth ring 43 of the positioning seat 4; the second locking tooth ring 53 can engage with the first locking tooth ring 31 of the connecting part 3, and the central hole can pass through the limiting end 22 on the deformable end 21. The locking tooth 52 and the locking tooth ring 43 cooperate to realize the one-way limiting of the ratchet connector 5, the second locking tooth ring 53 and the first locking tooth ring 31 cooperate to transmit power, and the central hole passes through the limiting end 22 to realize the transmission separation and control the tightness switching of the shoelace.

[0031] The positioning base 4 is provided with limiting rings 44 on both the upper and lower sides, and a limiting space is formed between the two limiting rings 44. The outer ring of the upper cover 6 is provided with a friction ring 61, and the lower inner edge of the upper cover 6 is provided with an elastic locking block 64. The elastic locking block 64 engages with the limiting ring 44 above the positioning base 4, and the elastic locking block 64 is located in the limiting space. The limiting ring 44 forms a limiting space to restrict the displacement of the upper cover 6. The friction ring 61 increases the operating friction, and the elastic locking block 64 ensures the stable movement of the upper cover 6 and optimizes the operating feel.

[0032] Below the top cover 6, there is also a mating block 62 and an elastic locking block 63. The mating block 62 mates with the mating groove 54 of the ratchet connector 5, and the elastic locking block 63 engages with the engaging part 55 of the ratchet connector 5. The mating block 62 ensures that the top cover 6 and the ratchet connector 5 rotate synchronously, and the elastic locking block 63 fixes the connection between the two, improving the reliability of operation.

[0033] When assembling the support member 23 and the limiting member 2, the support end 232 of the support member 23 is aligned with the guide groove 27 at the bottom of the limiting member 2 and inserted into the deformation groove along the guide groove 27. During the insertion process, the arc-shaped bottom 231 of the support member 23 is larger than the deformation groove. When the arc-shaped bottom 231 is in contact with the bottom end face of the limiting member 2, the support member 23 stops being inserted, thus achieving installation limitation. The snap-fit ​​protrusion 24 on the inner side of the deformation end 21 is snapped into the snap-fit ​​hole 233 of the support end 232. At this time, the support end 232 is in contact with the inner side of the deformation end 21, thus completing the assembly of the support member 23 and the limiting member 2.

[0034] When assembling the limiting member 2 and the positioning seat 4, first align the through hole in the middle of the connecting part 3 with the deformable end 21 of the limiting member 2, and then slide the connecting part 3 downward along the deformable end 21 onto the deformable end 21 of the limiting member 2. Then, align the snap-fit ​​end 26 of the limiting member 2 with the elastic snap-fit ​​block 42 of the positioning seat 4, and push the limiting member 2 towards the positioning seat 4 so that the elastic snap-fit ​​block 42 engages with the snap-fit ​​end 26. At the same time, ensure that the positioning block 46 of the positioning seat 4 is embedded in the groove of the positioning end 25 of the limiting member 2. At this time, the limiting member 2 and the positioning seat 4 form a fixed connection, and the relative position accuracy of the two is ensured by the cooperation of the positioning block 46 and the groove. The connecting part 3 is located between the limiting member 2 and the positioning seat 4. At this time, the connecting part 3 can rotate freely around the deformable end 21, and subsequent transmission can be achieved by meshing with the ratchet connecting part 5. Then, the positioning seat 4 and the base 1 are assembled. The lower part of the positioning seat 4 with the assembled limiting part 2 is aligned with the mounting groove of the base 1 and placed downward into the mounting groove. Then, the positioning seat 4 is rotated so that the fitting block 41 on the positioning seat 4 is inserted into the fitting groove 11 of the base 1. At this time, the circumferential position of the positioning seat 4 is fixed. At the same time, the edge of the positioning end 25 of the limiting part 2 passes over the elastic block 12 of the base 1. The elastic block 12 is embedded in the groove of the positioning end 25, which further improves the stability of the fit between the positioning seat 4 and the base 1. The limiting part 45 on the outside of the positioning seat 4 fits against the upper end surface of the base 1 to prevent the positioning seat 4 from moving downward excessively, thus completing the assembly of the positioning seat 4 and the base 1. Then, align the center hole of the ratchet connector 5 with the deformable end 21 of the limiting member 2, and slide it downwards. Push the ratchet connector 5 downwards until the center hole passes the limiting end 22 on the deformable end 21. At this time, the limiting end 22 limits the ratchet connector 5. The meshing tooth ring 2 53 at the bottom of the ratchet connector 5 meshes with the meshing tooth ring 1 31 of the connecting part 3. At the same time, the locking tooth 52 on the elastic end 51 of the ratchet connector 5 meshes with the locking tooth ring 43 of the positioning seat 4, thus completing the assembly of the ratchet connector 5. Finally, align the mating block 62 below the top cover 6 with the mating groove 54 of the ratchet connector 5, and simultaneously align the elastic locking block 64 on the inner side of the top cover 6 with the limiting ring 44 above the positioning seat 4. Press the top cover 6 down, and the mating block 62 will be inserted into the mating groove 54. The elastic locking block 63 on the top cover 6 will engage with the engaging part 55 of the ratchet connector 5, and the elastic locking block 64 will be inserted into the inner side of the limiting ring 44 above the positioning seat 4 and located in the limiting space formed by the two limiting rings 44. At this time, the top cover 6 is fixedly connected to the ratchet connector 5 and can move up and down relative to the positioning seat 4, completing the assembly of the entire shoelace knob.

[0035] When in use, the end of the shoelace is passed through the through hole 32 of the connecting part 3 and fixed in the existing disclosed manner. Hold the friction ring 61 of the upper cover 6 and rotate the upper cover 6 clockwise or counterclockwise according to the tooth direction design. The upper cover 6 drives the ratchet connector 5 to rotate synchronously through the cooperation of the mating block 62 and the mating groove 54. The meshing tooth ring 2 53 of the ratchet connector 5 meshes with the meshing tooth ring 1 31 of the connecting part 3, thereby driving the connecting part 3 to rotate around the deformable end 21 of the limiting member 2. When the connecting part 3 rotates, the shoelace is wound around the connecting part 3 as the connecting part 3 rotates, thereby tightening the shoelace. During this process, the engaging tooth 52 of the elastic end 51 of the ratchet connector 5 meshes unidirectionally with the engaging tooth ring 43 of the positioning seat 4 to prevent the ratchet connector 5 from rotating in the opposite direction and ensure that the shoelace will not loosen on its own after being tightened. When loosening the shoelaces, hold the friction ring 61 of the upper cover 6 and pull the upper cover 6 upwards; the upper cover 6 engages with the engaging part 55 through the elastic locking block 2 63, causing the ratchet connector 5 to move upwards. The inner wall of the center hole of the ratchet connector 5 presses against the deformable end 21 of the limiting member 2, causing the deformable end 21 to deform inwards. At the same time, the deformable end 21 presses against the supporting end 232 of the supporting member 23, and the supporting end 232 deforms synchronously and generates a restoring force. When the ratchet engages... As the connecting piece 5 continues to move upward, when the center hole passes the limiting end 22 on the deformable end 21, the restoring force of the supporting end 232 pushes the deformable end 21 to reset. When the center hole passes the limiting end 22 on the deformable end 21, a click feedback is generated, indicating that the ratchet connecting piece 5 has been pulled into place. At this time, the meshing tooth ring 53 of the ratchet connecting piece 5 separates from the meshing tooth ring 31 of the connecting part 3, and the connecting part 3 can rotate freely. At this time, the shoe tongue can be lifted outward to loosen the shoelaces. This utility model adds a support member 23 in the deformation groove of the limiting member 2. The support end 232 of the support member 23 can provide elastic support to the deformation end 21, avoiding the elastic decay caused by long-term independent deformation of the deformation end 21, and significantly improving the service life of the limiting member 2. At the same time, the components achieve high-precision fit through snap-fit ​​and fitting structures, reducing the increase of fit gap during use and improving the overall durability of the knob.

[0036] Those skilled in the art should understand that the embodiments of the present invention described above and shown in the accompanying drawings are merely examples and do not limit the present invention. The purpose of the present invention has been fully and effectively achieved. The functions and structural principles of the present invention have been shown and explained in the embodiments. Without departing from the stated principles, the implementation of the present invention may have any variations or modifications.

Claims

1. A shoelace knob, characterized in that, The device includes a base (1), a limiting member (2), a connecting part (3), a positioning seat (4), a ratchet connector (5), and a top cover (6). The connecting part (3) is located between the limiting member (2) and the positioning seat (4). The limiting member (2) is engaged with the positioning seat (4), and the positioning seat (4) is engaged with the base (1). The ratchet connector (5) is fitted onto the limiting member (2) to form a locking engagement. The top cover (6) is engaged with the ratchet connector (5) and the positioning seat (4) respectively. The limiting member (2) is provided with a support member (23), which can provide elastic support to the limiting member (2) to extend its service life.

2. The shoelace knob according to claim 1, characterized in that: The limiting member (2) includes a vertical deformation end (21), the deformation end (21) is provided with a deformation groove, and the support member (23) is installed in the deformation groove; The support member (23) includes an arc-shaped bottom (231) and a support end (232) extending from the arc-shaped bottom (231), the support end (232) being a deformable structure and located in a deformation groove.

3. The shoelace knob according to claim 2, characterized in that: The size of the arc-shaped bottom (231) is larger than the size of the deformation groove. The bottom of the limiting member (2) is provided with a guide groove (27) that connects with the deformation groove. The support member (23) is installed into the deformation groove through the guide groove (27).

4. The shoelace knob according to claim 2, characterized in that: The inner side of the deformable end (21) is provided with a snap-fit ​​protrusion (24), and the support end (232) is provided with a snap-fit ​​hole (233). The snap-fit ​​protrusion (24) is snapped into the snap-fit ​​hole (233), and the support end (232) is in contact with the inner side of the deformable end (21) to form support. The limiting member (2) also includes a symmetrically arranged positioning end (25) and a snap-fit ​​end (26).

5. The shoelace knob according to claim 4, characterized in that: The base (1) is provided with an installation groove, and the installation groove is provided with a fitting groove (11), an elastic block (12), a limiting block (13) and an abutment end (14). The positioning end (25) is provided with a groove, and the edge of the positioning end (25) can pass over the elastic block (12) so that the elastic block (12) is located in the groove of the positioning end (25).

6. The shoelace knob according to claim 5, characterized in that: The positioning seat (4) is provided with a fitting block (41), an elastic locking block (42), a positioning block (46), and a limiting part (45). The fitting block (41) can rotate into the fitting groove (11) and fit into it. The elastic locking block (42) engages with the locking end (26) of the limiting member (2). The positioning block (46) is located in the groove of the positioning end (25). The limiting part (45) is located at the upper end of the base (1) to limit the positioning seat (4).

7. The shoelace knob according to claim 2, characterized in that: The connecting part (3) is provided with a meshing toothed ring (31) and a through hole (32) for the shoe rope to pass through. The deformable end (21) of the limiting member (2) passes through the middle through hole on the connecting part (3). The connecting part (3) can rotate relative to the limiting member (2) and the positioning seat (4).

8. The shoelace knob according to claim 6, characterized in that: The positioning seat (4) is also provided with a locking tooth ring (43), and the ratchet connector (5) is provided with an elastic end (51), a mating groove (54), a locking part (55), a central hole and a second locking tooth ring (53) located at the bottom. The end of the elastic end (51) is provided with locking teeth (52), and the locking teeth (52) can engage with the locking tooth ring (43) of the positioning seat (4); the second locking tooth ring (53) can engage with the first locking tooth ring (31) of the connecting part (3), and the central hole can pass over the limiting end (22) on the deformable end (21).

9. The shoelace knob according to claim 6, characterized in that: The positioning seat (4) is provided with limiting rings (44) on both the upper and lower sides, and a limiting space is formed between the two limiting rings (44); The outer ring of the upper cover (6) is provided with a friction ring (61), and the lower inner edge of the upper cover (6) is provided with an elastic locking block three (64). The elastic locking block three (64) engages with the limiting ring (44) above the positioning seat (4), and the elastic locking block three (64) is located in the limiting space.

10. The shoelace knob according to claim 9, characterized in that: Below the top cover (6), there is also a mating block (62) and an elastic locking block (63). The mating block (62) is mated with the mating groove (54) of the ratchet connector (5), and the elastic locking block (63) is engaged with the engaging part (55) of the ratchet connector (5).

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