Racing Equipment

Abstract

The lacing device includes a main body (4), a winding reel (3) for winding up lace, a top cover (6) rotatably mounted on the main body (4), and a check mechanism (5) for rotating the top cover (6) in one direction. The winding reel (3) is rotatably mounted within the main body (4), and the top cover (6) and the winding reel (3) can be switched between connected and disconnected. The top cover (6) includes a cover body (61) and a side wall (62) mounted on the periphery of the cover body (61). The side wall (62) has a first mating surface (63) on its inner surface, the main body (4) has two or more sliding passages (41) on its upper end surface, the check mechanism (5) includes two or more sliders (51) that slide along the sliding passages (41) and elastic members (52) for pushing the sliders (51) so that they slide out of the main body (4), and each slider (51) has a first check tooth (53) on it that engages with the first mating surface (63) to achieve locking.

Description

[Technical Field]

[0001] FIELD OF THE INVENTION The present invention relates to the field of lacing knob loosening and tightening, and more particularly to lacing devices. [Background technology]

[0002] Currently, Chinese Patent No. 202320155870.0 discloses a new type of lace loosening knob device and its non-return structure, which includes a base body, a reel, and a knob member, wherein the reel is fitted into the base body, the knob member is connected to the base body, tooth grooves are arranged on the base body, the knob member includes a wheel disc rigid member, and convex teeth are arranged on the wheel disc rigid member, the tooth grooves and convex teeth are interlocked vertically and can rotate non-returnably in one direction, and the reel and knob member are provided with a drive structure that can be connected and driven or separated, and when the knob member moves relative to the base body, it can achieve an interlocking tightening mode in which the tooth grooves and convex teeth interlock, and a free loosening mode in which the tooth grooves and convex teeth separate.

[0003] Currently, there are various types of loosening knob devices disclosed on the market, some of which have complicated structures, making it difficult to develop, produce, and fully utilize them, and some of which have low structural design strength, short service life, and poor loosening feel. In order to achieve a structure with excellent structural stability, relatively high strength, and relatively long service life, the applicant has made corresponding improvements to the conventional structure. Summary of the Invention [Problem to be solved by the invention]

[0004] SUMMARY OF THE INVENTION Accordingly, in response to the above problems, the present invention provides a lacing device that solves the problems of conventional lacing devices, which have low stability, low strength, and short service life. [Means for solving the problem]

[0005] In order to achieve the above object, the present invention adopts the following technical solution: A lacing device including a main body, a winding reel for winding lace, a top cover rotatably mounted on the main body, and a check mechanism for unidirectional rotation of the top cover, the winding reel being rotatably mounted within the main body, and the top cover and the winding reel being switchable between connection and disconnection, The upper cover includes a cover body and a side wall provided on the periphery of the cover body, and a first mating surface is provided on an inner surface of the side wall, The upper end surface of the body is provided with two or more sliding passages; the check mechanism includes two or more sliders that slide along a slide path and an elastic member that pushes the sliders up so that they slide out of the body, each slider being provided with a first check tooth that engages with the first mating surface to achieve locking; When the top cover is connected to the winding reel, the first check tooth engages with and locks into the first mating surface, and when the top cover rotates in the forward direction, the first mating surface presses against the first check tooth, thereby pushing the slider to slide along the sliding path, and further pressing and deforming the elastic member, ultimately enabling each first check tooth to enter the next first mating surface, and when the top cover rotates in the reverse direction, the first check tooth locks the first mating surface and cannot push the slider to slide along the sliding path.

[0006] Furthermore, the elastic member is an annular body provided above the main body, each slider is provided on the annular body, and a curved energy storage portion is provided between two adjacent sliders on the annular body to enhance elastic performance.

[0007] Furthermore, the number of sliders is three, and the three sliders are arranged at equal intervals. A first side line of the slider in the clockwise direction has an intersection with the main body, and the intersection and the center of the main body form a main body connecting line, and the angle between the first side line and the main body connecting line is 30° to 60°.

[0008] Furthermore, the sliding passage is composed of two stopper structures, and the stopper structures are provided with passage stoppers for locking the slider.

[0009] Furthermore, two or more position limiting clamping blocks are provided at the lower end of the side wall of the top cover, a clamping ring is provided at the upper side of the main body, the position limiting clamping block is engaged with the lower end of the clamping ring, a third through hole is provided in the center of the upper end of the main body, a transmission plate is engaged in the center of the top cover, second transmission teeth are provided at the lower end of the transmission plate, and a second transmission groove is provided on the upper end surface of the winding reel, so that the second transmission teeth and the second transmission groove can be releasably engaged so that the top cover moves up and down along the main body, thereby realizing releasable engagement between the top cover and the winding reel, and the main body is provided with a limiting structure for limiting the up and down movement position of the top cover.

[0010] Furthermore, a first through hole is provided in the center of the take-up reel, a second through hole is provided in the center of the transmission plate, the limiting structure includes a bottom plate and a clamping pin provided in the center of the bottom plate, the bottom plate is attached to the lower end of the main body, the clamping pin passes through the first through hole and the second through hole, and a limiting protrusion is provided on the side wall of the upper end of the clamping pin, when the upper cover moves the transmission plate downward to connect with the take-up reel, the second through hole engages with the lower end of the limiting protrusion, and when the upper cover moves the transmission plate upward to separate from the take-up reel, the second through hole engages with the upper end of the limiting protrusion.

[0011] Furthermore, an elastically deforming groove is provided in the center of the clamping pin, and when the limiting protrusion passes through the second through-hole, the elastically deforming groove is deformed to achieve the pass-through.

[0012] A lacing device based on the same inventive concept, comprising a main body, a winding reel for winding up lace, a top cover rotatably mounted on the main body, and a non-return mechanism for rotating the top cover in one direction, the winding reel being rotatably mounted within the main body, and the top cover and the winding reel being switchable between connection and disconnection, The upper cover includes a cover body and a side wall provided on the periphery of the cover body, and a first mating surface is provided on an inner surface of the side wall, The upper end surface of the body is provided with two or more sliding passages; the check mechanism includes two or more sliders that slide along a slide path and an elastic member that pushes the sliders up so that they slide out of the body, each slider being provided with a first check tooth that engages with the first mating surface to achieve a locking engagement; When the top cover is connected to the take-up reel, the first check tooth engages with and is locked with the first mating surface; when the top cover rotates in the forward direction, the first mating surface presses the first check tooth, thereby forcing the slider to slide along the sliding path, and further pressing and deforming the elastic member, so that each first check tooth enters the next first mating surface; when the top cover rotates in the reverse direction, the first check tooth locks the first mating surface and cannot press the slider to slide along the sliding path; The reel further includes a base, the main body being removably mounted on the base, a mounting cavity being formed on the base, a torsion spring being disposed within the mounting cavity, a transmission disk being disposed within the mounting cavity between the torsion spring and the winding reel, both ends of the torsion spring being connected to the transmission disk and the base, a resilient piece being disposed on the transmission disk, and a third transmission groove being engaged with the resilient piece on the lower end surface of the winding reel, so that when the top cover drives the winding reel to rotate in the forward direction, the winding reel does not drive the turntable to rotate; and when the top cover and the winding reel are disconnected, the torsion spring releases energy and drives the turntable to rotate in the forward direction, thereby driving the winding reel to rotate in the forward direction and realizing the return of part or all of the race. [Effects of the Invention]

[0013] By adopting the above technical solutions, the beneficial effects of the present invention are as follows: 1. In this solution, the installation of a check mechanism can achieve a more stable check, with higher locking strength and a longer service life. Here, the installation of the sliding passage, slider, and elastic member allows the first check tooth and the first mating surface to engage. This engagement has relatively more restrictions, resulting in greater stability. Here, the forward rotation can be clockwise or counterclockwise, which is the rotation direction when tightening the race, and the reverse rotation is the opposite. The passage is not installed along the radial direction but is offset at a certain angle. This offset can press the slider into the sliding passage quickly during forward rotation and ensure effective locking during reverse rotation, preventing the slider from slipping into the sliding passage. In general installation, the optimal offset angle is 30 to 60 degrees.

[0014] 2. To achieve better cost reduction and elastic performance, the elastic member is a ring-shaped body mounted on the main body, each slider is mounted on the ring-shaped body, and a curved energy storage section is provided between each adjacent slider on the ring-shaped body to enhance elastic performance, whereby the connection between the slider and the ring-shaped body can be a relatively small section, which is more favorable for deformation of the ring-shaped body, and the curved energy storage section absorbs and releases deformation energy, which is advantageous for extending the service life. In this solution, the ring-shaped body, slider, and curved energy storage section are manufactured as a single unit, and are made of plastic or nylon material with relatively good deformation recovery performance.

[0015] 3. The installation of the passage groove and passage stopper can ensure stable sliding of the slider.

[0016] 4. The arrangement of the transmission plate, third through-hole, second transmission tooth, and second transmission groove allows the top cover to move up and down along the body, thereby realizing a releasable engagement between the second transmission tooth and the second transmission groove, and thereby realizing a releasable engagement between the top cover and the reel. Furthermore, the arrangement of the limiting structure ensures that the top cover remains in a stable state when releasably engaged with the reel. That is, when the top cover moves the transmission plate downward to connect with the reel, the second through-hole engages with the lower end of the limiting protrusion, and when the top cover moves the transmission plate upward to separate from the reel, the second through-hole engages with the upper end of the limiting protrusion. In this way, a relatively stable releasable engagement can be achieved.

[0017] 5. A lacing device based on the same inventive concept adds a base, a torsion spring, and a turntable, and by installing an elastic piece and a third transmission groove, it can be realized that when the top cover drives the reel to rotate in the forward direction, the reel does not drive the turntable to rotate, but when it rotates in the reverse direction, the reel drives the turntable to rotate in the reverse direction. In lace tightening mode, the top cover connects and engages with the reel, and due to the existence of a non-return mechanism, the top cover can only rotate in the forward direction to drive the reel to tighten the lace, and when rotation stops, the lace is locked. In lace loosening mode, the top cover and the reel are disconnected, the non-return mechanism disengages, pulling out and loosening the lace, driving the reel to rotate in the reverse direction. Furthermore, the rotation of the turntable drives energy to store in the torsion spring, which releases the lace, driving the turntable to rotate in the forward direction, thereby driving the reel to rotate in the forward direction. In lace loosening mode, it is possible to realize partial or full lace loosening.

[0018] When used with shoes, the torsion spring keeps the shoelace in a semi-fastened state when the top cover and reel are disconnected, but the semi-fastened state is not locked, allowing the shoelace to stretch freely and the foot to freely remove from the shoe. When putting on shoes again, the shoelace can be stretched and loosened by hand. The stretched shoelace automatically returns to the device and is pressed down to lock it, making putting on shoes and fastening the shoelace more convenient and saving time and effort. [Brief explanation of the drawings]

[0019] [Figure 1] FIG. 1 is a front view of a three-dimensional structure of the present invention. [Figure 2] FIG. 2 is a rear view of the three-dimensional structure of the present invention. [Figure 3] FIG. 2 is a schematic diagram of a three-dimensional structure of the present invention in which the lid is omitted. [Figure 4] FIG. 4 is a plan view of the state of FIG. 3. [Figure 5] FIG. 2 is a schematic diagram of the exploded structure of FIG. 1. [Figure 6] FIG. 3 is a schematic diagram of the exploded structure of FIG. 2. [Figure 7] 1 is a schematic diagram of a cross-sectional structure of the present invention. [Figure 8] FIG. 5 is a schematic diagram of the force decomposition in FIG. 4. [Figure 9] FIG. 10 is a schematic diagram of an exploded structure in a first view according to another embodiment of the present invention. [Figure 10] FIG. 10 is a schematic diagram of an exploded structure in a second perspective according to another embodiment of the present invention. DETAILED DESCRIPTION OF THE INVENTION

[0020] The present invention will be further explained in conjunction with the drawings and specific embodiments.

[0021] 1 to 8, this embodiment 1 provides a lacing device that includes a main body 4, a winding reel 3 for winding up lace, a top cover 6 rotatably mounted on the main body 4, and a check mechanism 5 for rotating the top cover 6 in one direction, the winding reel 3 is rotatably mounted within the main body 4, the top cover 6 and the winding reel 3 can be switched between connected and disconnected, the top cover 6 includes a cover body 61 and a side wall 62 mounted on the periphery of the cover body 61, a first mating surface 63 is provided on the inner surface of the side wall 62, and two or more sliding passages 41 are provided on the upper end surface of the main body 4.

[0022] The check mechanism 5 includes two or more sliders 51 that slide along the sliding path 41, and an elastic member 52 that pushes the sliders 51 up so that they slide out of the main body 4. Each slider 51 is provided with a first check tooth 53 that engages with a first mating surface 63 to achieve locking. The elastic member 52 is an annular body provided above the main body 4, and each slider 51 is provided on the annular body. Between two adjacent sliders 51 on the annular body, a curved energy storage portion 54 is provided to enhance elastic performance. The number of the sliders 51 is three. As shown in FIG. 4, the first side line La of the slider extends to form an intersection point Lc with the outer circumferential line of the body, and the intersection point Lc is connected to the outer circumferential center of the body to form a body connecting line Lb. The angle between the first side line and the body connecting line is 30° to 60°. This angle can better press the slider into the sliding passage when rotating in the forward direction, and also ensures that the locking can be effectively achieved when rotating in the reverse direction. In this solution, the angle α is set to 45°.

[0023] The sliding passage 41 is composed of two stopper structures, and the stopper structures are provided with passage stoppers 412 for locking the slider. To achieve better sliding, a passage groove 411 is further provided, and it is obvious that the passage stoppers 412 may be stoppers or may be inverted L-shape.

[0024] When the top cover 6 is connected to the winding reel 3, the first check tooth 53 engages with and locks into the first meshing surface 63. When the top cover 6 rotates in the forward direction, the first meshing surface 63 presses against the first check tooth 53, thereby pushing the slider 51 to slide along the sliding path 41, and further pressing and deforming the elastic member 52, ultimately enabling each first check tooth 53 to enter the next first meshing surface 63. When the top cover 6 rotates in the reverse direction, the first check tooth 53 locks the first meshing surface 63 and cannot push the slider 51 to slide along the sliding path 41.

[0025] Referring again to Figure 8, when the top cover 6 rotates in the forward direction, the first meshing surface applies a torsional force Fa to the first check tooth of the slider, and the stopper on one side of the slider passage forms a reaction force Fb against the first check tooth at the normal position of its side, which forms an angle β. Based on a set square, the two forces are combined, and the direction of the resultant force is directed from the starting point of the first to the end point of the second. When influenced by this force, an inward resultant force Fc is generated between them, and the direction of this force promotes the slider to be pulled inward into the passage, allowing the rotating cover to rotate normally.

[0026] When the top cover 6 rotates in the opposite direction, the first engagement surface exerts a torsional force fd on the first check tooth of the slider, and the stopper on one side of the slider passage forms a reaction force fe against the first check tooth at the normal position of its side, forming an angle γ. According to a set square, the two forces are combined, and the resultant force direction is directed from the starting point of the first to the end point of the second. When influenced by this force, an outward resultant force fh is generated between them, and the direction of this force promotes the slider to slide outward, but is limited by the interruption by the wall of the first engagement surface, so the slider is directly and completely stretched accordingly, and the slider cannot continue to slide outward, and the top cover cannot rotate in the opposite direction, thereby preventing the race from being unscrewed under the action of the loosening force.

[0027] Two or more position-limiting clamping blocks 64 are provided at the lower end of the side wall 62 of the top cover 6, a clamping ring 42 is provided at the upper side of the main body 4, and the position-limiting clamping blocks 64 are engaged with the lower end of the clamping ring 42. A third through hole 43 is provided in the center of the upper end of the main body 4, a transmission plate 7 is engaged in the center of the top cover 6, a second transmission tooth 71 is provided at the lower end of the transmission plate 7, and a second transmission groove 31 is provided on the upper end surface of the take-up reel 3. The second transmission tooth 71 and the second transmission groove 31 are releasably engaged so that the top cover 6 moves up and down along the main body 4, thereby realizing a releasable engagement between the top cover 6 and the take-up reel 3. The main body 4 is provided with a limiting structure 8 for limiting the up and down movement position of the top cover 6.

[0028] A first through hole 32 is provided in the center of the take-up reel 3, a second through hole 72 is provided in the center of the transmission plate 7, the limiting structure 8 includes a bottom plate 81 and a clamping pin 82 provided in the center of the bottom plate 81, the bottom plate 81 is attached to the lower end of the main body 4, the clamping pin 82 passes through the first through hole 32 and the second through hole 72, and a limiting protrusion 83 is provided on the side wall 62 at the upper end of the clamping pin 82, when the top cover 6 moves the transmission plate 7 downward to connect it to the take-up reel 3, the second through hole 72 engages with the lower end of the limiting protrusion 83, and when the top cover 6 moves the transmission plate 7 upward to separate it from the take-up reel 3, the second through hole 72 engages with the upper end of the limiting protrusion 83. The clamping pin 82 has an elastically deforming groove 84 at its center. When the limiting protrusion 83 passes through the second through-hole 72, the elastically deforming groove 84 is deformed to achieve the passing-through.

[0029] Referring again to FIGS. 9 and 10, the second embodiment provides a lacing device based on the same inventive concept, and differs from the first embodiment in the following points.

[0030] The device further includes a base 1, the main body 4 is removably mounted on the base 1, a mounting cavity 11 is provided on the base 1, a torsion spring 12 is provided in the mounting cavity 11, a turntable 2 is provided between the torsion spring 12 and the winding reel 3 in the mounting cavity 11, both ends of the torsion spring 12 are connected to the turntable 2 and the base 1, an elastic piece 21 is provided on the turntable 2, and the lower end surface of the winding reel 3 is provided with an elastic piece 21. When the top cover 6 drives the reel 3 to rotate in the forward direction, the reel 3 does not drive the turntable 2 to rotate; when the top cover 6 and the reel 3 are disconnected, the lace is pulled and the torsion spring 12 stores energy; when the lace is released, the torsion spring 12 releases energy, driving the turntable 2 to rotate in the forward direction, thereby driving the reel 3 to rotate in the forward direction and allowing some or all of the lace to return.

[0031] A mounting pillar 13 is provided in the center of the base 1, one end of the torsion spring 12 is engaged with the mounting pillar 13, and a locking fork 14 is provided on the mounting pillar 13. A disk wall 22 is provided facing downward on the circumferential side of the turntable 2, and a notch 23 is provided in the disk wall 22 for engaging the torsion spring 12. A clamping pillar 24 for clamping the torsion spring 12 is provided in the notch 23, and the torsion spring 12 is located within the disk wall 22.

[0032] A step portion 34 is provided at the upper end of the take-up reel 3, and the step portion 34 extends into the third through-hole 43 to support the rotation of the take-up reel 3.

[0033] The bottom plate 81 of the limiting structure 8 is fixedly connected onto the lower end of the winding reel 3 .

[0034] The beneficial effects of the present invention are as follows: 1. In this solution, the installation of a check mechanism can achieve a more stable check, with higher locking strength and a longer service life. The installation of the sliding passage, slider, and elastic member allows the first check tooth and the first mating surface to engage. This engagement has relatively more restrictions, resulting in greater stability. Here, the forward rotation can be clockwise or counterclockwise, which is the rotation direction when tightening the race, and the reverse rotation is the opposite. The passage is not installed along the radial direction but is offset at a certain angle. This offset can press the slider into the sliding passage quickly during forward rotation and ensure effective locking during reverse rotation, preventing the slider from slipping into the sliding passage. In a typical configuration, the offset angle is optimally 30 to 60 degrees. That is, when the top cover rotates in the forward direction, the first meshing surface applies a torsional force Fa to the first check tooth of the slider, and the stopper on one side of the slider passage forms a reaction force Fb against the first check tooth at the position normal to its side, forming an angle β. Based on the set square, the two forces are combined, and the direction of the resultant force is directed from the first starting point to the second end point. When influenced by this force, an inward resultant force Fc is generated between them. When the top cover rotates in the reverse direction, the first meshing surface applies a torsional force fa to the first check tooth of the slider, and the stopper on one side of the slider passage forms a reaction force fb against the first check tooth at the position normal to its side, forming an angle α. Based on the set square, the two forces are combined, and the direction of the resultant force is directed from the first starting point to the second end point. When influenced by this force, an outward resultant force fc is generated between them.

[0035] 2. To achieve better cost reduction and elastic performance, the elastic member is a ring-shaped body mounted on the main body, each slider is mounted on the ring-shaped body, and a curved energy storage section is provided between each adjacent slider on the ring-shaped body to enhance elastic performance, where the connection between the slider and the ring-shaped body can be only a relatively small section, which is more advantageous for deformation of the ring-shaped body, and the curved energy storage section is configured to absorb and release deformation energy, which is advantageous for extending the service life. In this solution, the ring-shaped body, slider, and curved energy storage section are manufactured as a single unit, and are made of plastic or nylon material with relatively good deformation recovery performance.

[0036] 3. The installation of the passage groove and passage stopper can ensure stable sliding of the slider.

[0037] 4. The arrangement of the transmission plate, third through-hole, second transmission tooth, and second transmission groove allows the top cover to move up and down along the body, thereby realizing a releasable engagement between the second transmission tooth and the second transmission groove, and thereby realizing a releasable engagement between the top cover and the reel. Furthermore, the arrangement of the limiting structure ensures that the top cover remains in a stable state when releasably engaged with the reel. That is, when the top cover moves the transmission plate downward to connect with the reel, the second through-hole engages with the lower end of the limiting protrusion, and when the top cover moves the transmission plate upward to separate from the reel, the second through-hole engages with the upper end of the limiting protrusion. In this way, a relatively stable releasable engagement can be achieved.

[0038] 5. A lacing device based on the same inventive concept adds a base, a torsion spring, and a turntable, and by installing an elastic piece and a third transmission groove, it can be realized that when the top cover drives the reel to rotate in the forward direction, the reel does not drive the turntable to rotate, but when it rotates in the reverse direction, the reel drives the turntable to rotate in the reverse direction. In lace tightening mode, the top cover connects and engages with the reel, and due to the existence of a non-return mechanism, the top cover can only rotate in the forward direction to drive the reel to tighten the lace, and when rotation stops, the lace is locked. In lace loosening mode, the top cover and the reel are disconnected, the non-return mechanism disengages, pulling out and loosening the lace, driving the reel to rotate in the reverse direction. Furthermore, the rotation of the turntable drives energy to store in the torsion spring, which releases the lace, driving the turntable to rotate in the forward direction, thereby driving the reel to rotate in the forward direction. In lace loosening mode, it is possible to realize partial or full lace loosening.

[0039] When used with shoes, the torsion spring keeps the shoelace in a semi-fastened state when the top cover and reel are disconnected, but the semi-fastened state is not locked, allowing the shoelace to stretch freely and the foot to freely remove from the shoe. When putting on shoes again, the shoelace can be stretched and loosened by hand. When the stretched shoelace automatically returns to the device, it is pressed down to lock it, making putting on shoes and fastening the shoelace more convenient and saving time and effort.

[0040] Although the present invention has been particularly shown and described with reference to preferred embodiments, it will be understood by those skilled in the art that various changes in form and detail may be made to the present invention, all of which are within the scope of protection of the present invention, without departing from the spirit and scope of the present invention as defined in the appended claims. [Explanation of symbols]

[0041] 1...base, 11...mounting cavity, 12...torsion spring, 13...mounting column, 2...rotating plate, 21...elastic piece, 22...plate wall, 23...notch, 24...clamping column, 3...winding reel, 31...second transmission groove, 32...first through hole, 33...third transmission groove, 34...step portion, 4...Main body, 41...Sliding passage, 411...Passage groove, 412...Passage stopper, 42...Clamping ring, 43...Third through hole, 5...check mechanism, 51...slider, 52...elastic member, 53...first check tooth, 54...curved energy storage portion, 6...upper cover, 61...cover body, 62...side wall, 63...first engaging surface, 64...position limiting clamping block, 7...transmission disk, 71...second transmission tooth, 72...second through hole, 8...Limiting structure, 81...Bottom plate, 82...Clamping pin, 83...Limiting protrusion, 84...Elastic deformation groove.

Claims

1. A lacing device including an upper cover, a main body, a check mechanism, a winding reel, and a base, the winding reel being rotatably provided within the main body, and the upper cover and the winding reel being switchably connected or disconnected, The top cover is provided with a first mating surface, When the winding reel rotates along different directions, it can achieve two modes of lace tightening and lace loosening; The upper end surface of the body is provided with two or more sliding passages, and the sliding passages are configured with two stopper structures; The check mechanism is also located on the upper end surface of the main body, and includes two or more sliders sliding along a sliding path, and an elastic member for pushing the sliders up so that they slide out of the main body, the elastic member being an annular body provided above the main body, each slider being provided on the annular body, and a curved energy storage section for enhancing elastic performance is provided between two adjacent sliders on the annular body, a first side line of the slider in the clockwise direction and the outer periphery of the main body have an intersection point, the intersection point and the center of the main body form a main body connecting line, and the angle between the first side line and the main body connecting line is 30° to 60°, and each slider is provided with a first check tooth for engaging with the first mating surface to achieve locking, a mounting cavity on the base, the body being removably mounted on the base; a rotating disk is provided within the mounting cavity; a torsion spring further disposed within the mounting cavity, the torsion spring including a first movable end arranged to be engageable and a second movable end arranged to be engageable; the first movable end is provided on a base, and the second movable end is provided on a rotating disk; an elastic piece is provided on the turntable so as to engage with the take-up reel in only one rotational direction, and a third transmission groove is provided on the lower end surface of the take-up reel to engage with the elastic piece; When the top cover is connected to the take-up reel, the first check tooth engages with and locks with the first meshing surface. When the top cover rotates in the forward direction, the first meshing surface presses the first check tooth, thereby forcing the slider to slide along the sliding path, and further pressing and deforming the elastic member, finally realizing that each first check tooth enters the next first meshing surface, further driving the rotation of the take-up reel and entering the lace tightening mode. In the lace tightening mode, the take-up reel does not drive the rotation of the turntable, and the lace can be tightened normally. When the top cover rotates in the reverse direction, the first check tooth locks the first meshing surface, and the slider slides along the sliding path. When the top cover and the reel are disconnected, the first check tooth and the first meshing surface are disconnected, the lace loosening mode is entered, and the lace can be pulled out, thereby driving the reel to rotate in the reverse direction, which further drives the torsion spring to rotate and stores energy, at this time the lace is released, the torsion spring releases energy, which further drives the turntable to rotate in the forward direction, which drives the reel to rotate in the forward direction, and further realizes that part or all of the lace can be retracted even in the lace loosening mode.

2. 2. The lacing device according to claim 1, wherein the number of said sliders is three, and the three sliders are provided at equal intervals.

3. 2. The lacing device according to claim 1, wherein the stopper structure further comprises a passage stopper for locking the slider.

4. The lacing device according to any one of claims 1 to 3, characterized in that: two or more position-limiting clamping blocks are provided at the lower end of the top cover; a clamping ring is provided at the upper side of the main body; the position-limiting clamping blocks are engaged with the lower ends of the clamping rings; a third through hole is provided at the center of the upper end of the main body; a transmission plate is engaged at the center of the top cover; second transmission teeth are provided at the lower end of the transmission plate; a second transmission groove is provided on the upper end surface of the reel; the top cover moves up and down along the main body, realizing releasable engagement between the second transmission teeth and the second transmission groove, thereby realizing releasable engagement between the top cover and the reel; and the main body is provided with a limiting structure for limiting the up and down movement position of the top cover.

5. 5. The lacing device of claim 4, wherein a first through hole is provided in the center of the reel and a second through hole is provided in the center of the transmission disc, the limiting structure includes a bottom plate and a clamping pin provided in the center of the bottom plate, the bottom plate is attached to the lower end of the main body, the clamping pin passes through the first through hole and the second through hole, and a limiting protrusion is provided on the side wall of the upper end of the clamping pin, so that when the top cover moves downward to drive the transmission disc to connect with the reel, the second through hole engages with the lower end of the limiting protrusion, and when the top cover moves upward to drive the transmission disc to separate from the reel, the second through hole engages with the upper end of the limiting protrusion.

6. 6. The racing device according to claim 5, wherein an elastically deformable groove is provided in the center of the clamping pin, and when the limiting protrusion passes through the second through hole, the elastically deformable groove is deformed to achieve the passage.

7. 2. The racing device according to claim 1, wherein the rotating disk is provided with three elastic pieces, a disk wall is provided on the circumferential side of the rotating disk facing downward, a notch is provided in the disk wall for engaging the second movable end of the torsion spring, and the torsion spring is located within the disk wall.

8. 2. The racing device according to claim 1, wherein a mounting post is provided at the center of the base, the first movable end of the torsion spring is anchored to the mounting post, and three anchoring forks are provided on the mounting post.

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