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] The present invention relates to the field of loosening of racing knobs, and particularly to a racing device.

Background Art

[0002] Currently, Chinese Patent No. 202320155870.0 discloses a novel knob device for race loosening and its check structure including a base body, a reel, and a knob member. The reel is embedded in the base body, the knob member is connected onto the base body, a tooth groove is arranged on the base body, the knob member includes a wheel disk rigid member with convex teeth arranged thereon, the meshing structure between the tooth groove and the convex teeth meshes vertically and can rotate in one direction for check, a driving structure capable of connection driving or separating movement is provided on the reel and the knob member, and when the knob member moves relative to the base body, a meshing tightening mode where the tooth groove and the convex teeth mesh and a free loosening mode where the tooth groove and the convex teeth separate can be achieved.

[0003] Currently, there are various types of knob devices for loosening disclosed in the market. Some are disadvantageous in that they have complex structures and are not conducive to reaching the stage of full use after development and production. Some have low design strength of the structure, short service life, and poor feel of loosening touch. In order to realize a structure with excellent structural stability, relatively high strength, and relatively long service life, the applicant of the present application makes corresponding improvements to the conventional structure.

Summary of the Invention

Problems to be Solved by the Invention

[0004] Therefore, in view of the above problems, the present invention provides a racing device that solves the problems of low stability, low strength, and short service life of conventional racing devices.

Means for Solving the Problems

[0005] To achieve the above objective, the present invention employs the following technical solutions. A racing device comprising a main body, a winding reel for winding races, a top cover rotatably mounted on the main body, and a check mechanism for enabling unidirectional rotation of the top cover, wherein the winding reel is rotatably mounted within the main body, and the top cover and the winding reel can be switched between connected and disconnected. The top cover includes a lid body and a side wall provided on the periphery of the lid body, and a first interlocking surface is provided on the inner surface of the side wall. Two or more sliding passages are provided on the upper end surface of the main body. The check mechanism includes two or more sliders that slide along a sliding passage and an elastic member for pushing up the sliders to slide out of the body, and each slider is provided with a first check tooth that engages with a first meshing surface to achieve locking. When the top cover is connected to the winding reel, the first check teeth engage with and lock against the first meshing surface. When the top cover rotates in the forward direction, the first meshing surface presses against the first check teeth, thereby pushing the slider to slide along the sliding passage, and further pressing and deforming the elastic member, ultimately causing each first check tooth to enter the next first meshing surface. When the top cover rotates in the reverse direction, the first check teeth lock against the first meshing surface, preventing the slider from sliding along the sliding passage.

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

[0007] Furthermore, there are three sliders, which are arranged at equal intervals. The first edge of each slider intersects with the main body in the clockwise direction, and the intersection point between this intersection and the center of the main body forms a main body connecting line. The angle between the first edge and the main body connecting line is between 30° and 60°.

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

[0009] Furthermore, two or more position-restricting clamping blocks are provided at the lower end of the side wall of the top cover, a clamping ring is provided on the upper side of the main body, the position-restricting clamping blocks are locked to 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 disc is engaged with the center of the top cover, a second transmission tooth is provided at the lower end of the transmission disc, a second transmission groove is provided on the upper end surface of the winding reel, the top cover moves up and down along the main body, a detachable engagement is achieved between the second transmission tooth and the second transmission groove, thereby a detachable engagement is achieved between the top cover and the winding reel, and the main body is provided with a restricting structure for restricting the vertical movement position of the top cover.

[0010] Furthermore, a first through-hole is provided in the center of the winding 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 being attached to the lower end of the main body, the clamping pin passing through the first and second through-holes, and a limiting projection provided on the side wall of the upper end of the clamping pin. When the top cover is driven to move the transmission disc downward to connect to the winding reel, the second through-hole is locked to the lower end of the limiting projection, and when the top cover is driven to move the transmission disc upward to separate it from the winding reel, the second through-hole is locked to the upper end of the limiting projection.

[0011] Furthermore, an elastic deformation groove is provided in the central part of the clamping pin, and when the restricting projection penetrates the second through hole, the elastic deformation groove deforms to achieve penetration.

[0012] A racing device based on the same inventive concept, comprising a main body, a winding reel for winding the race, a top cover rotatably mounted on the main body, and a check mechanism for enabling unidirectional rotation of the top cover, wherein the winding reel is rotatably mounted within the main body, and the top cover and the winding reel can be switched between connected and disconnected, The top cover includes a lid body and a side wall provided on the periphery of the lid body, and a first interlocking surface is provided on the inner surface of the side wall. Two or more sliding passages are provided on the upper end surface of the main body. The check mechanism includes two or more sliders that slide along a sliding passage and an elastic member for pushing up the sliders to slide out of the body, and each slider is provided with a first check tooth that engages with a first meshing surface to achieve locking and engagement. When the top cover is connected to the winding reel, the first check teeth engage with and lock against the first meshing surface, and when the top cover rotates in the forward direction, the first meshing surface presses against the first check teeth, thereby pushing the slider to slide along the sliding passage, and further pressing and deforming the elastic member, ultimately causing each first check tooth to enter the next first meshing surface, and when the top cover rotates in the reverse direction, the first check teeth lock against the first meshing surface, preventing the slider from sliding along the sliding passage. The invention further includes a base, the main body being detachably mounted on the base, a mounting cavity provided on the base, a torsion spring provided in the mounting cavity, a transmission disc provided between the torsion spring and the winding reel in the mounting cavity, both ends of the torsion spring connected to the transmission disc and the base, respectively, an elastic piece provided on the transmission disc, a third transmission groove provided on the lower end surface of the winding reel that engages with the elastic piece, and 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, driving the turntable to rotate in the forward direction, thereby driving the winding reel to rotate in the forward direction and enabling the return of part or all of the race. [Effects of the Invention]

[0013] By employing the aforementioned technical solutions, the beneficial effects of the present invention are as follows. 1. In this solution, the installation of a check valve mechanism enables more stable check valve operation, resulting in higher locking strength and a longer service life. Here, the installation of a sliding passage, slider, and elastic member enables engagement between the first check valve tooth and the first meshing surface. Such engagement has relatively many constraints, thus achieving greater stability. Here, forward rotation may be clockwise or counterclockwise, and it is the direction of rotation when tightening the race; conversely, reverse rotation is the opposite. The passage is not installed along the radial direction, but offset by a certain angle. This offset allows the slider to be pressed into the sliding passage quickly when rotating in the forward direction, and also ensures that locking is effectively achieved when rotating in the reverse direction, preventing the slider from sliding into the sliding passage. In general installations, an offset angle of 30 to 60 degrees is optimal.

[0014] 2. To achieve more favorable cost reduction and elastic performance, the elastic member is an annular body provided above the main body, each slider is provided on the annular body, and between two adjacent sliders on the annular body, a curved energy storage section is provided to enhance elastic performance, where the connection between the slider and the annular body can be simply a relatively small section, thus more advantageous for the deformation of the annular body, and the installation of the curved energy storage section is advantageous for extending the service life as it absorbs and releases deformation energy. In this solution, the annular body, slider and curved energy storage section are manufactured to be integrally molded, and the material used is a plastic or nylon material having relatively good deformation recovery performance.

[0015] 3. By installing passage grooves and passage stoppers, stable sliding of the slider can be achieved.

[0016] 4. By installing the transmission disc, the third through hole, the second transmission teeth, and the second transmission groove, the upper cover moves up and down along the main body, enabling a reciprocal engagement between the second transmission teeth and the second transmission groove, thereby enabling a reciprocal engagement between the upper cover and the winding reel. Furthermore, by installing the limiting structure, it is possible to ensure that the upper cover remains in a stable state when achieving a reciprocal engagement with the winding reel. Specifically, when the upper cover is driven to move the transmission disc downward to connect with the winding reel, the second through hole is locked to the lower end of the limiting projection, and when the upper cover is driven to move the transmission disc upward to separate it from the winding reel, the second through hole is locked to the upper end of the limiting projection. In this way, a relatively stable reciprocal engagement can be achieved.

[0017] 5. In a racing device based on the same inventive concept, a base is added, and a torsion spring and a turntable are further provided. By installing an elastic piece and a third transmission groove, it is possible to achieve 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 it rotates in the reverse direction, the turntable is driven to rotate in the reverse direction. In the race tightening mode, the top cover is connected and engaged with the winding reel, and because a check mechanism exists, the top cover can only rotate in the forward direction to drive the winding reel to tighten the race, and when the rotation stops, the race is locked. In the race loosening mode, the top cover and the winding reel are disconnected, the check mechanism disengages, the race is pulled out and loosened, the winding reel is driven to rotate in the reverse direction, and further, the rotation of the turntable is driven to store energy in the torsion spring, the race is released, the torsion spring releases energy, and the turntable rotates in the forward direction, thereby driving the winding reel to rotate in the forward direction, and even in the loosening mode, it is possible to return part or all of the race.

[0018] When used for shoes, when the upper cover and the winding reel are disconnected, due to the presence of the torsion spring, the shoe lace remains in a semi-fastened state. At this time, the semi-fastened state is not locked, the shoe lace can stretch and contract freely, and the foot can be removed from the shoe freely. When putting on the shoe again, stretch the shoe lace by hand to loosen it and then put on the shoe. When the stretched shoe lace automatically returns into the device, press it to lock it. When putting on the shoe and tightening the shoe lace, it is more convenient and realizes saving time and labor.

Brief Description of the Drawings

[0019] [Figure 1] It is a front view of the three-dimensional structure of the present invention. [Figure 2] It is a rear view of the three-dimensional structure of the present invention. [Figure 3] It is a schematic diagram of the three-dimensional structure with the lid of the present invention omitted. [Figure 4] It is a plan view state diagram of FIG. 3. [Figure 5] It is a schematic diagram of the exploded structure of FIG. 1. [Figure 6] It is a schematic diagram of the exploded structure of FIG. 2. [[ID=ID=24]] [Figure 7] It is a schematic diagram of the cross-sectional structure of the present invention. [Figure 8] It is a schematic diagram of the force decomposition in FIG. 4. [Figure 9] It is a schematic diagram of the exploded structure from the first perspective according to another embodiment of the present invention. [Figure 10] It is a schematic diagram of the exploded structure from the second perspective according to another embodiment of the present invention.

Embodiments for Carrying out the Invention

[0020] In combination with the drawings and specific embodiments, the present invention will be further described.

[0021] Referring to Figures 1 to 8, this embodiment 1 provides a racing device comprising a main body 4, a winding reel 3 for winding the race, a top cover 6 rotatably mounted on the main body 4, and a check mechanism 5 for enabling unidirectional rotation of the top cover 6, wherein 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 comprises a cover body 61 and a side wall 62 provided on the circumferential side of the cover body 61, a first meshing 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 a sliding passage 41, and an elastic member 52 for pushing up the sliders 51 to slide out of the main body 4. Each slider 51 is provided with a first check tooth 53 that engages with a first meshing 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, there is a curved energy storage portion 54 to enhance elastic performance. There are three sliders 51, and as shown in Figure 4, the first edge line La of each slider extends to form an intersection Lc with the outer circumference of the main body, and the intersection Lc is connected to the outer circumference of the main body to form a main body connection line Lb. The angle between the first edge line and the main body connection line is 30° to 60°. This angle allows for better pressure to press the slider into the sliding passage when rotating in the forward direction, and also ensures that locking can be effectively achieved when rotating in the reverse direction. In this solution, the angle α is set to 45 degrees.

[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 naturally, the passage stoppers 412 may be stoppers or may be in the shape of an inverted L.

[0024] When the top cover 6 is connected to the winding reel 3, the first check teeth 53 engage with and lock 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 teeth 53, thereby pushing the slider 51 to slide along the sliding passage 41, and further pressing and deforming the elastic member 52, ultimately causing 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 teeth 53 lock against the first meshing surface 63, preventing the slider 51 from sliding along the sliding passage 41.

[0025] Referring again to Figure 8, when the top cover 6 rotates in the positive direction, the first mating 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 its side normal position, which forms an angle β. Based on the triangular ruler, the two forces are combined, and the direction of the resultant force is directed from the first starting point to the second ending point. When influenced by this force, an inward resultant force Fc is generated between them, and the direction of this force promotes pulling the slider inward into the passage, allowing the rotating cover to rotate normally.

[0026] When the top cover 6 rotates in the opposite direction, the first meshing surface applies a torsional force fd to 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 its side normal position, forming an angle γ. Based on a set square, the two forces are combined, and the direction of the resultant force is directed from the first starting point to the second ending point. When affected 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 to the blockage by the wall of the first meshing surface, so the slider is directly and completely stiffened accordingly, and the slider cannot continue to slide outward, preventing the top cover from rotating in the opposite direction, thereby preventing unintentional loosening of the race under the action of the loosening force.

[0027] Two or more position-restricting clamping blocks 64 are provided at the lower end of the side wall 62 of the upper cover 6, a clamping ring 42 is provided on the upper side of the main body 4, the position-restricting clamping blocks 64 are locked to 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 disc 7 is engaged with the center of the upper cover 6, a second transmission tooth 71 is provided at the lower end of the transmission disc 7, a second transmission groove 31 is provided on the upper end surface of the winding reel 3, the upper cover 6 is provided with a retractable engagement between the second transmission tooth 71 and the second transmission groove 31 so that it can move up and down along the main body 4, thereby achieving a retractable engagement between the upper cover 6 and the winding reel 3, and the main body 4 is provided with a restriction structure 8 for restricting the vertical movement position of the upper cover 6.

[0028] A first through hole 32 is provided in the center of the winding reel 3, and a second through hole 72 is provided in the center of the transmission disc 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. A limiting projection 83 is provided on the side wall 62 of the upper end of the clamping pin 82. When the top cover 6 is driven to move the transmission disc 7 downward to connect to the winding reel 3, the second through hole 72 is locked to the lower end of the limiting projection 83. When the top cover 6 is driven to move the transmission disc 7 upward to separate it from the winding reel 3, the second through hole 72 is locked to the upper end of the limiting projection 83. An elastic deformation groove 84 is provided in the central part of the clamping pin 82, and when the limiting projection 83 passes through the second through hole 72, the elastic deformation groove 84 deforms to achieve the pass.

[0029] Referring again to Figures 9 and 10, this embodiment 2 provides a racing device based on the same inventive concept, and the differences between it and embodiment 1 are as follows.

[0030] The main body 4 further includes a base 1, the main body 4 is detachably 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 rotating disc 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 rotating disc 2 and the base 1 respectively, an elastic piece 21 is provided on the rotating disc 2, and the lower end surface of the winding reel 3 is provided with the elastic piece 21 A third transmission groove 33 is provided that engages with the upper cover 6, and when the upper cover 6 drives the winding reel 3 to rotate in the forward direction, the winding reel 3 does not drive the turntable 2 to rotate. When the upper cover 6 and the winding reel 3 are disconnected, the torsion spring 12 stores energy when the race is pulled, and when the race is released, the torsion spring 12 releases energy, driving the turntable 2 to rotate in the forward direction, thereby driving the winding reel 3 to rotate in the forward direction and returning part or all of the race.

[0031] A mounting column 13 is provided in the center of the base 1, one end of the torsion spring 12 is locked to the mounting column 13, and a locking fork 14 is provided on the mounting column 13. A plate wall 22 is provided facing downward on the circumferential side surface of the rotating plate 2, a notch 23 for locking the torsion spring 12 is provided in the plate wall 22, a clamping column 24 for clamping the torsion spring 12 is provided in the notch 23, and the torsion spring 12 is located inside the plate wall 22.

[0032] A stepped portion 34 is provided at the upper end of the winding reel 3, and the stepped portion 34 extends into the third through hole 43 to provide rotational support for the winding reel 3.

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

[0034] The beneficial effects of this invention are as follows: 1. In this solution, the installation of a check valve mechanism enables more stable check valve operation, resulting in higher locking strength and a longer service life. Here, the installation of a sliding passage, slider, and elastic member enables engagement between the first check valve tooth and the first meshing surface. Such engagement has relatively many limitations, thus achieving greater stability. Here, forward rotation may be clockwise or counterclockwise, and it is the direction of rotation when tightening the race; conversely, reverse rotation is the opposite. The passage is not aligned radially but offset by a certain angle. This offset allows the slider to be pressed into the sliding passage quickly when rotating in the forward direction, and also ensures effective locking when rotating in the reverse direction, preventing the slider from sliding into the sliding passage. In a typical configuration, an offset angle of 30 to 60 degrees is optimal. In other words, when the top cover rotates in the forward direction, the first mating 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 its position normal to its side, forming an angle β. Based on a set square, the two forces are combined, and the direction of the resultant force is directed from the first starting point to the second ending 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 mating 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 its position normal to its side, forming an angle α. Based on a set square, the two forces are combined, and the direction of the resultant force is directed from the first starting point to the second ending point. When influenced by this force, an outward resultant force fc is generated between them.

[0035] 2. To achieve more favorable cost reduction and elastic performance, the elastic member is an annular body provided above the main body, each slider is provided on the annular body, and between two adjacent sliders on the annular body, a curved energy storage section is provided to enhance elastic performance, where the connection between the slider and the annular body may be simply a relatively small portion, thus being more advantageous against deformation of the annular body, and the curved energy storage section is provided to absorb and release deformation energy, which is advantageous for extending the service life. In this solution, the annular body, slider and curved energy storage section are manufactured by integral molding, and the material used is a plastic or nylon material having relatively good deformation recovery performance.

[0036] 3. By installing passage grooves and passage stoppers, stable sliding of the slider can be achieved.

[0037] 4. By installing the transmission disc, the third through hole, the second transmission teeth, and the second transmission groove, the upper cover moves up and down along the main body, enabling a reciprocal engagement between the second transmission teeth and the second transmission groove, thereby enabling a reciprocal engagement between the upper cover and the winding reel. Furthermore, by installing the limiting structure, it is possible to ensure that the upper cover remains in a stable state when achieving a reciprocal engagement with the winding reel. Specifically, when the upper cover is driven to move the transmission disc downward to connect with the winding reel, the second through hole is locked to the lower end of the limiting projection, and when the upper cover is driven to move the transmission disc upward to separate it from the winding reel, the second through hole is locked to the upper end of the limiting projection. In this way, a relatively stable reciprocal engagement can be achieved.

[0038] 5. In a racing device based on the same inventive concept, a base is added, and a torsion spring and a turntable are further provided. By installing an elastic piece and a third transmission groove, it is possible to achieve 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 it rotates in the reverse direction, the turntable is driven to rotate in the reverse direction. In the race tightening mode, the top cover is connected and engaged with the winding reel, and because a check mechanism exists, the top cover can only rotate in the forward direction to drive the winding reel to tighten the race, and when the rotation stops, the race is locked. In the race loosening mode, the top cover and the winding reel are disconnected, the check mechanism disengages, the race is pulled out and loosened, the winding reel is driven to rotate in the reverse direction, and further, the rotation of the turntable is driven to store energy in the torsion spring, the race is released, the torsion spring releases energy, and the turntable rotates in the forward direction, thereby driving the winding reel to rotate in the forward direction, and even in the loosening mode, it is possible to return part or all of the race.

[0039] When used with shoes, the torsion spring prevents the shoelaces from being fully tightened when the top cover and winding reel are disconnected. This semi-tightened state is not locked, allowing the shoelaces to stretch and contract freely, and the foot to easily remove the shoe. When putting the shoe back on, the shoelaces are stretched and loosened by hand. When the stretched shoelaces automatically return to the device, they are pressed to lock them in place, making it more convenient and saving time and effort when putting on shoes and tightening the shoelaces.

[0040] While the present invention has been specifically described and illustrated with reference to preferred embodiments, as will be understood by those skilled in the art, various modifications can be made to the invention in form and detail, all of which remain within the scope of protection of the invention, without departing from the spirit and scope of the invention limited to the appended claims. [Explanation of Symbols]

[0041] 1...Base, 11...Mounting cavity, 12...Torsion spring, 13...Mounting column, 2...rotating disc, 21...elastic piece, 22...disc wall, 23...notch, 24...clamping column, 3...winding reel, 31...second transmission groove, 32...first through hole, 33...third transmission groove, 34...stepped section, 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 section 6...Top cover, 61...Cover body, 62...Side wall, 63...First interlocking surface, 64...Position limiting clamping block, 7...Transmission disc, 71...Second transmission tooth, 72...Second through hole, 8...Restrictive structure, 81...Bottom plate, 82...Clamping pin, 83...Restrictive projection, 84...Elastic deformation groove.

Claims

1. A racing device comprising a top cover, a main body, a check mechanism, a winding reel, and a base, wherein the winding reel is rotatably mounted within the main body, and the top cover and the winding reel can be switched on or off, The upper lid is provided with a first interlocking surface. The aforementioned winding reel can achieve two modes, race tightening and race loosening, when it rotates along different directions. The upper end surface of the main body is provided with two or more sliding passages, and each sliding passage is composed of two stopper structures. The aforementioned check mechanism is also located on the upper end surface of the main body and includes two or more sliders that slide along a sliding passage and an elastic member for pushing up the sliders to 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, a curved energy storage portion for enhancing elastic performance provided between two adjacent sliders on the annular body, a first edge line in the clockwise direction of the slider and the outer circumference of the main body intersect, the intersection point and the center of the main body form a main body connection line, the angle between the first edge line and the main body connection line is 30° to 60°, and each slider is provided with a first check tooth that engages with a first meshing surface to achieve locking. A mounting cavity is provided on the base, and the main body is detachably mounted on the base. A rotating disc is provided inside the aforementioned mounting cavity. A torsion spring is further provided within the mounting cavity, and the torsion spring includes a first movable end that is positioned to engage and a second movable end that is also able to engage. The first movable end is provided on a base, and the second movable end is provided on a rotating disc. An elastic piece is provided on the rotating disc so as to engage with the winding reel in only one rotational direction, and a third transmission groove that engages with the elastic piece is provided on the lower end surface of the winding reel. When the top cover is connected to the winding reel, the first check teeth engage with and lock against the first meshing surface. When the top cover rotates in the forward direction, the first meshing surface presses against the first check teeth, thereby pushing the slider to slide along the sliding passage. Furthermore, it presses against and deforms the elastic member, ultimately causing each first check tooth to enter the next first meshing surface. This also drives the rotation of the winding reel, entering the race tightening mode. In the race tightening mode, the winding reel does not drive the rotation of the turntable, and the race can be tightened normally. When the top cover rotates in the reverse direction, the first check teeth lock against the first meshing surface, pushing the slider along the sliding passage. A racing device characterized in that it cannot be pushed to slide along the rail, and when the top cover and the winding reel are disconnected, the first check tooth and the first meshing surface are disconnected, entering a race loosening mode, the race can be pulled out, thereby driving the winding reel to rotate in the reverse direction, and further driving the rotation of the torsion spring to store energy, at which point the race is released, the torsion spring releases energy, and further driving the turntable to rotate in the forward direction, thereby driving the winding reel to rotate in the forward direction, and further enabling the return of part or all of the race even in the race loosening mode.

2. The racing device according to claim 1, characterized in that the number of sliders is three, and the three sliders are provided at equal intervals.

3. The racing device according to claim 1, characterized in that the stopper structure is further provided with a passage stopper for locking the slider.

4. The racing device according to any one of claims 1 to 3, characterized in that two or more position-restricting clamping blocks are provided at the lower end of the top cover, a clamping ring is provided on the upper side of the main body, the position-restricting clamping blocks are locked to 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 disc is engaged with the center of the top cover, a second transmission tooth is provided at the lower end of the transmission disc, a second transmission groove is provided on the upper end surface of the winding reel, the top cover moves up and down along the main body, a detachable engagement is achieved between the second transmission tooth and the second transmission groove, thereby achieving a detachable engagement between the top cover and the winding reel, and the main body is provided with a restricting structure for restricting the vertical movement position of the top cover.

5. The racing device according to claim 4, characterized in that a first through hole is provided in the center of the winding reel, 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, a limiting projection is provided on the side wall of the upper end of the clamping pin, when the top cover is driven to move the transmission disc downward to connect to the winding reel, the second through hole is locked to the lower end of the limiting projection, and when the top cover is driven to move the transmission disc upward to separate it from the winding reel, the second through hole is locked to the upper end of the limiting projection.

6. The racing device according to claim 5, characterized in that an elastic deformation groove is provided in the central part of the clamping pin, and when the limiting projection penetrates the second through hole, the elastic deformation groove deforms to achieve penetration.

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

8. The racing device according to claim 1, characterized in that a mounting column is provided in the center of the base, the first movable end of the torsion spring is locked to the mounting column, and three locking forks are provided on the mounting column.

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