A lacing screw cap structure and a lacing device including the same

Abstract

The utility model discloses a lace-up cover structure, comprising an inner cover and an outer cover, wherein the outer cover is detachably mounted on the outer side of the inner cover, a buckle is provided on the outer cover, and a clamping structure is provided at the inner cover corresponding to the buckle, and the buckle and the clamping structure are clamped and connected to each other, so that the outer cover can be linked to the inner cover. Since the buckle has a certain elastic deformation ability, the inner cover and the outer cover can be separated under the action of an external force, and the disassembly between the inner cover and the outer cover is completed. On the contrary, during installation, as long as the outer cover is pressed onto the inner cover, the outer cover can be clamped on the outer side of the inner cover by the elastic force of the buckle, so that the installation and disassembly of the outer cover and the inner cover are relatively convenient; the utility model also provides a lace device including the lace-up cover structure.

Description

Technical Field

[0001] The utility model relates to the technical field of lacing, in particular to a lacing screw cover structure and a lacing device comprising the same. Background Art

[0002] At present, laces, ropes or other tensioning members are often used to tighten shoes, clothes or other items. The laces are usually located on the shoes, clothes or other items so that the laces can tighten the openings of the shoes, clothes or other items. Although the lace mechanisms in the prior art can meet the functional requirements of tightening the laces to tighten shoes, clothes or other items, they have a single appearance and cannot be replaced.

[0003] In order to make the appearance of the lacing mechanism more beautiful, a decorative piece is usually sleeved on the outside of the screw cap of the lacing tightening mechanism, so that the entire lacing mechanism is more beautiful. Or some friction strips are made, which is conducive to applying force to the screw cap. The connection between the screw cap of the lacing tightening mechanism and the decorative piece usually includes three ways: embedded snap connection, magnetic connection or adhesive fixation. The adhesive fixation makes the decorative piece and the lacing tightening mechanism non-detachable, so the decorative piece cannot be replaced. The magnetic connection method may cause the decorative piece to fall off during use due to the small suction force. The embedded snap connection structure is mainly connected by embedding the protrusion on the outside of the screw cap of the lacing tightening mechanism into the groove of the decorative piece, but the decorative piece is easy to detach during the pulling operation, and because the decorative piece is generally made of soft rubber material, the embedded snap connection generally needs to be combined with adhesive fixation to achieve a better linkage effect, which makes it difficult to meet the replacement requirements of the decorative piece.

[0004] Therefore, there is an urgent need for a lacing device that can meet the requirements of appearance decoration and is more convenient to disassemble. Utility Model Content

[0005] The utility model aims to solve one of the technical problems in the related art to at least a certain extent. To this end, one purpose of the utility model is to provide a lace-up screw cap structure, comprising an inner screw cap and an outer screw cap, wherein the outer screw cap is detachably mounted on the outer side of the inner screw cap, a buckle is provided on the outer screw cap, and a locking structure is provided at a position corresponding to the buckle of the inner screw cap, wherein the buckle is clamped and connected to the locking structure, so that the outer screw cap and the inner screw cap can be linked and connected.

[0006] The linkage connection means that the movement or change of the outer cover can cause the inner cover to make corresponding movement or change. The movement of the outer cover may cause the movement of the inner cover synchronously, or the inner cover may start to make corresponding movement synchronously after the outer cover has moved for a period of time. Therefore, the linkage connection means that the inner and outer covers can be linked in a certain stroke, allowing the outer cover to have a certain free movement period. The linkage connection includes axial linkage and circumferential linkage. The "circumferential direction" mentioned in this application refers to the circumferential direction.

[0007] Further, according to an embodiment of the utility model, the buckle is an elastic buckle, the locking structure is a locking groove, and the elastic buckle and the locking groove are clamped and connected to each other so that the outer rotating cover can be detachably installed on the outer side of the inner rotating cover.

[0008] Furthermore, the locking groove is recessed inwardly relative to a bottom edge of the inner rotating cover.

[0009] Further, according to an embodiment of the utility model, the outer rotating cover is provided with a first gap and a second gap, a buckle is provided between the first gap and the second gap, and the buckle is the elastic buckle. Since gaps are provided on both sides of the buckle, the buckle has a large deformation ability, so it becomes an elastic buckle.

[0010] Further, according to an embodiment of the utility model, the locking structure includes a locking plate portion, and the locking groove is formed between the locking plate portion and the inner rotating cover, or the locking groove is formed between the locking plate portion and the first protrusion and the second protrusion, and the buckle is used to interfere with the inner wall of the locking groove to clamp and fix the inner rotating cover and the outer rotating cover.

[0011] Further, according to an embodiment of the present utility model, the circumferential width of the locking groove is greater than or equal to the circumferential width of the buckle.

[0012] The cooperation of the buckle and the groove makes it inevitable that the inner and outer rotating covers can be linked in the axial direction. When the circumferential width of the positioning groove is equal to or substantially equal to the circumferential width of the buckle, the rotation of the outer rotating cover can drive the inner rotating cover to rotate synchronously. The so-called "substantially equal" means that the width difference ratio is within 10%. When the circumferential width of the positioning groove is greater than the circumferential width of the buckle, the outer rotating cover often needs to idle for a distance and then abut against the side wall of the positioning groove before it can drive the inner rotating cover to rotate synchronously. If the buckle of the outer rotating cover abuts against a side wall of the buckle groove at the starting position, when the outer rotating cover rotates toward the side wall, it can also directly and synchronously drive the inner rotating cover to rotate.

[0013] Further, according to an embodiment of the utility model, a first convex block is provided at a position of the inner rotating cover corresponding to the first slit, and the first convex block is embedded in the first slit;

[0014] A second protrusion is provided at a position of the inner rotating cover corresponding to the second gap, and the second protrusion is embedded in the second gap.

[0015] Among them, the first and second protrusions are foolproof designs. The first and second protrusions are arranged correspondingly to the first and second gaps, so that when the outer cover is installed on the inner cover, the protrusions can only be aligned with the gaps for alignment and installation. At this time, the elastic buckle and the locking groove can also be aligned and clamped, thereby ensuring the accuracy and convenience of the installation of the inner and outer covers. The alignment of the buckle and the locking structure requires careful observation to align, so the foolproof design of the first and second protrusions is particularly helpful for the quick and accurate alignment and installation of the inner and outer covers.

[0016] The first protrusion is embedded in the first gap, and the second protrusion is embedded in the second gap, so that the rotational movement of the first gap can drive the movement of the first protrusion; similarly, the rotational movement of the second gap can be driven by the second protrusion. When one side of the first protrusion or the second protrusion abuts against the side wall of the first gap or the second gap, if the abutting side is just one side of the rotation direction, then the movement of the first gap or the second gap (i.e., the movement of the outer rotating cover) can synchronously drive the movement of the first protrusion or the second protrusion (i.e., the movement of the inner rotating cover); otherwise, the first gap or the second gap needs to idle for a distance before it can drive the protrusion to rotate.

[0017] Furthermore, the transmission mechanism for the linkage between the outer rotating cover and the inner rotating cover may be a buckle-grid pair, or a bump-slot pair, or both. The buckle-grid pair can realize both axial linkage and circumferential rotation transmission, while the bump-slot pair can only realize circumferential rotation transmission.

[0018] Further, according to an embodiment of the present invention, the size and shape of the first protrusion are adapted to the first gap; and / or

[0019] The size and shape of the second protrusion are matched with the second gap.

[0020] At this time, the first protrusion and the second protrusion not only have an anti-foolproof function, but the protrusion-gap pair also has a transmission effect, so that the inner and outer rotating covers can move more synchronously.

[0021] Further, according to an embodiment of the present invention, the latching structures are provided in plurality; and the buckles are also provided in plurality accordingly.

[0022] Further, according to an embodiment of the present invention, a plurality of the latching structures are evenly spaced apart on the inner rotating cover; and a plurality of the elastic buckles are also evenly spaced apart on the outer rotating cover.

[0023] Further, according to an embodiment of the utility model, the material of the outer rotating cover is one or a combination of soft glue, plastic or hardware materials.

[0024] Furthermore, according to an embodiment of the present invention, the outer rotating cover has a certain appearance, and the appearance is formed as a whole when the outer rotating cover is formed.

[0025] Furthermore, according to an embodiment of the present invention, the lace cover structure can be used in a lace device, and the laces can be tightened by rotating the lace cover structure.

[0026] Another object of the present invention is to provide a lacing device, which comprises a housing and the lacing screw cover structure, wherein the lacing screw cover structure is rotatably disposed on the housing.

[0027] Further, according to an embodiment of the utility model, pulling or pressing the outer rotating cover causes the inner rotating cover to move axially relative to the shell to achieve gear switching of the lace device; screwing the outer rotating cover causes the inner rotating cover to rotate relative to the shell to achieve tightening of the laces.

[0028] The lacing device provided in the present application can be used to fasten items such as shoes, clothes, hats and bags.

[0029] The lacing cover structure and the lacing device including the lacing cover structure provided by the utility model have the following advantages:

[0030] 1. The lace screw cap structure is provided with a buckle on the outer screw cap, and a locking structure is provided at the inner screw cap and the elastic buckle corresponding to the inner screw cap. The buckle and the locking structure are clamped and connected to each other, so that the outer screw cap can be detachably installed on the outer side of the inner screw cap, so that the inner and outer screw caps can be linked.

[0031] 2. The buckle is preferably an elastic buckle. Since the elastic buckle has a certain elastic deformation ability, the buckle between the elastic buckle and the inner cover can be loosened under the action of external force, so that the inner cover and the outer cover can be separated and the inner cover and the outer cover can be disassembled. On the contrary, during installation, as long as the outer cover is pressed onto the inner cover, the elastic buckle opens outward under the action of the outer wall of the inner cover. When the outer cover is completely pressed into the outer side of the inner cover, the elastic buckle can clamp the contact between the inner cover and the buckle through the elastic reset force, and then clamp the entire outer cover to the outer side of the inner cover, so that the installation and disassembly between the outer cover and the inner cover are relatively convenient.

[0032] 3. A protrusion is provided on the inner rotating cover, and the protrusion can be embedded in the gap of the outer rotating cover. The protrusion design has an anti-fool function, which improves the convenience and accuracy of the assembly of the inner and outer rotating covers; preferably, the protrusion-gap pair also has a transmission function, so that the inner and outer rotating covers can achieve a better linkage effect.

[0033] 4. By removing and installing external rotating covers with different appearances, the shape of the entire lacing device can be changed to meet the aesthetic needs of users.

[0034] Additional aspects and advantages of the present invention will be given in part in the following description, and in part will become apparent from the following description, or will be learned through the practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0035] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on the structures shown in these drawings without paying creative work.

[0036] Figure 1 It is a schematic diagram of a lace-up screw cap structure provided in an embodiment of the utility model;

[0037] Figure 2 yes Figure 1 A schematic diagram of the lace screw cap structure after being turned over;

[0038] Figure 3 yes Figure 1 An exploded schematic diagram of the lace screw cap structure shown;

[0039] Figure 4 yes Figure 2 An exploded schematic diagram of the lace screw cap structure shown;

[0040] Figure 5 yes Figure 1A top view of the strap screw cap structure shown;

[0041] Figure 6 yes Figure 5 The cross-section along the AA direction;

[0042] Figure 7a It is a schematic structural diagram of another external rotating cover provided in an embodiment of the utility model;

[0043] Figure 7b It is a structural schematic diagram of another external rotating cover provided in an embodiment of the utility model;

[0044] Figure 8 The utility model provides a lacing device including a lacing screw cover structure in an embodiment of the utility model.

[0045] Description of Figure Numbers:

[0046] Lace screw cap structure 1, shell 3;

[0047] Inner rotating cover 10; latching structure 101; latching plate portion 1011; latching groove 1012; first protrusion 102; second protrusion 103;

[0048] Outer rotating cover 20 ; elastic buckle 201 ; buckling portion 2011 ; elastic plate 2012 ; first slit 202 ; second slit 203 .

[0049] The realization of the purpose, functional features and advantages of the utility model will be further explained in conjunction with embodiments and with reference to the accompanying drawings. DETAILED DESCRIPTION

[0050] The embodiments of the utility model are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to be used to explain the utility model, and cannot be understood as limiting the utility model. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in the field without creative work are within the scope of protection of the utility model.

[0051] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "circumferential", "radial" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0052] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present utility model, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0053] In the present invention, unless otherwise clearly specified and limited, the terms "install", "connect", "connect", "fix" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be an indirect connection through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0054] In the present utility model, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may include that the first and second features are in direct contact, or may include that the first and second features are not in direct contact but are in contact through another feature between them. Moreover, a first feature being "above", "above" and "above" a second feature includes that the first feature is directly above and obliquely above the second feature, or simply indicates that the first feature is higher in level than the second feature. A first feature being "below", "below" and "below" a second feature includes that the first feature is directly below and obliquely below the second feature, or simply indicates that the first feature is lower in level than the second feature.

[0055] The lacing cover structure and the lacing device including the same according to the embodiment of the utility model are described in detail below with reference to the accompanying drawings.

[0056] Example 1

[0057] Reference Figures 1 to 6As shown, the embodiment of the utility model provides a lace screw cap structure, including an inner screw cap 10 and an outer screw cap 20, the outer screw cap 20 is detachably mounted on the outer side of the inner screw cap 10, an elastic buckle 201 is provided on the outer screw cap 20, a clamping structure 101 is provided at a position corresponding to the inner screw cap 10 and the elastic buckle 201, the elastic buckle 201 is clamped and connected with the clamping structure 101, so that the outer screw cap 20 is detachably mounted on the outer side of the inner screw cap 10. Figure 1 As shown in , after the inner rotating cover 10 and the outer rotating cover 20 are installed, the inner rotating cover 10 is located inside the outer rotating cover 20, and the outer wall of the inner rotating cover 10 is in close contact with the inner wall of the outer rotating cover 20 to form a whole. Since the outer rotating cover 20 is provided with an elastic buckle 201, the outer rotating cover 20 can be fastened to the outside of the inner rotating cover 10 through the elastic buckle 201. In this way, the inner rotating cover 10 and the outer rotating cover 20 can be relatively fixed to form a lace rotating cover integral part. When it is necessary to drive the lace to be tightened or loosened by the lace rotating cover, an external force can be applied to the outer rotating cover 20 to make it rotate, because the outer rotating cover 20 and the inner rotating cover 10 are fastened by the elastic buckle 201 to form a linked integral part. When the outer rotating cover 20 rotates, it can drive the inner rotating cover 10 to rotate together, so that the lace can be driven to be loosened or tightened by the inner rotating cover 10. The inner cover 10 and the outer cover 20 can be detachably connected by the elastic buckle 201. Since the elastic buckle 201 has a certain elastic force, the elastic buckle 201 can be loosened from the inner cover 10 under the action of an external force, so that the inner cover 10 and the outer cover 20 can be separated and the inner cover 10 and the outer cover 20 can be disassembled. On the contrary, during installation, as long as the outer cover 20 is pressed down to the outside of the inner cover 10, the elastic buckle 201 opens outward under the action of the outer wall of the inner cover 10. When the inner cover 10 is completely pressed into the outer cover 20, the elastic buckle 201 can clamp the inner cover 10 and the buckle contact point through the elastic reset force, and then the entire outer cover 20 is clamped on the outside of the inner cover 10, so that the installation and disassembly between the outer cover 20 and the inner cover 10 are relatively convenient.

[0058] like Figure 3As shown in , in one embodiment of the utility model, the outer rotating cover 20 is provided with a first slit 202 and a second slit 203, respectively, and a buckle 2011 is provided between the first slit 202 and the second slit 203. The buckle 2011 is easy to deform due to the existence of the first slit 202 and the second slit 203, so as to form an elastic buckle 201. The elastic buckle 201 includes an elastic plate 2012 and a buckle 2011 above the elastic plate 2012, and the elastic plate 2012 can provide a certain resetting elastic force for the buckle 2011. The first slit 202 and the second slit 203 can be formed by hollowing out the outer rotating cover 20, or can be formed by injection molding during the injection molding production process of the outer rotating cover 20. Both methods can make the elastic buckle 201 and the outer rotating cover 20 body an integrated component, thereby making the elastic buckle 201 not easy to be damaged or detached during use.

[0059] See also Figures 2 to 5 The inner rotating cover 10 is provided with a first protrusion 102 at a position corresponding to the first slit 202, and the first protrusion 102 is embedded in the first slit 202; the inner rotating cover 10 is provided with a second protrusion 103 at a position corresponding to the second slit 203, and the second protrusion 103 is embedded in the second slit 203. The first protrusion 102 and the second protrusion 103 can guide and position the installation between the inner rotating cover 10 and the outer rotating cover 20. That is, when the outer rotating cover 20 is installed on the inner rotating cover 10, the first slit 202 can be aligned with the first protrusion 102, and the second slit 203 can be aligned with the second protrusion 103. Due to the positioning function of the first protrusion 102 and the second protrusion 103, the elastic buckle 201 and the locking structure 101 are also aligned at this time. By pressing down the outer rotating cover 20, the first protrusion 102 can be embedded in the first slit 202, and the second protrusion 103 can be embedded in the second slit 203. The first slit 203 can move along the guide of the first protrusion 103, and the second slit 203 can move along the guide of the second protrusion 103. Finally, the outer rotating cover 20 can be correctly installed on the outside of the inner rotating cover 10, and the outer rotating cover 20 and the inner rotating cover 10 are clamped by the elastic buckle 201. After installation, during use, when the outer rotating cover 20 is rotated by external force, the inner rotating cover 10 can be driven to rotate through the outer rotating cover 20, and the first protrusion 102 and the second protrusion 103 can contact the inner wall of the gap, thereby better driving the inner rotating cover 10 to rotate synchronously.

[0060] Furthermore, in one embodiment of the present invention, the size and shape of the first protrusion 102 are adapted to the first gap 202; the size and shape of the second protrusion 103 are adapted to the second gap 203. Thus, after the inner rotating cover 10 and the outer rotating cover 20 are assembled, the first protrusion 102 can be closely attached to the inside of the first gap 202, and the second protrusion 103 can be closely attached to the inside of the second gap 203, so that the inner rotating cover 10 and the outer rotating cover 20 are tightly combined and can rotate synchronously better when rotating.

[0061] See also Figures 3 to 6 The locking structure 101 includes a locking plate portion 1011, a locking groove 1012 is formed between the locking plate portion 1011 and the inner rotating cover 10, or a locking groove 1012 is formed between the locking plate portion 1011 and the first protrusion 102 and the second protrusion 103, and the buckle is used to contact the inner wall of the locking groove 1012 of the locking plate portion 1011 to clamp and fix the inner rotating cover 10 and the outer rotating cover 20. Figure 3 , Figure 5 , Figure 6 As shown in , the buckle part 2011 is arranged at the top of the clamping plate part 1011. When the outer cover 20 is installed, the outer wall of the inner cover 10 can push the elastic plate 2012 outward to expand, thereby driving the buckle part 2011 outward. After the outer cover 20 is completely installed on the inner cover 10, the buckle part 2011 can be driven to reset under the elastic restoring force of the elastic plate 2012. Since the buckle part 2011 is located at the clamping groove 1012, the bottom of the buckle part 2011 can collide with the top of the clamping groove 1012, and the outer cover 20 is clamped on the outer side of the inner cover 10. The circumferential width of the clamping groove 1012 can be greater than or equal to the circumferential width of the buckle part 2011. Preferably, the circumferential width of the locking groove 1012 is equal to the circumferential width of the buckling portion 2011, so that the connection between the locking groove 1012 and the buckling portion 2011 is tighter, and the inner and outer rotating covers have a better synchronous linkage effect.

[0062] Furthermore, in one embodiment of the utility model, the latching structures 101 are provided in plurality; and the elastic buckles 201 are also provided in plurality. By cooperating with the elastic buckles 201, the outer rotating cover 20 can be better fastened to the inner rotating cover 10. The latching structures 101 are evenly distributed on the inner rotating cover 10; and the elastic buckles 201 are also evenly distributed on the outer rotating cover 20. In this way, the fastening force between the inner rotating cover 10 and the outer rotating cover 20 can be more uniform, and the fastening between the inner rotating cover 10 and the outer rotating cover 20 can be more tightly fastened, and the outer rotating cover 20 is not easy to fall off accidentally during use.

[0063] Furthermore, in other embodiments of the present invention, the appearance of the outer cover is diverse. Figure 7a and 7b Two different shapes of the external rotating cap are illustrated, and the external rotating cap can be replaced to meet different product application requirements. In one embodiment of the utility model, the external rotating cap 20 can be integrally formed by injection molding of a resin material, and the external rotating cap can also be made of hardware materials, soft rubber, etc., and the appearance shape can be prepared according to actual needs. The internal and external rotating caps of the utility model are easy to disassemble and assemble, and users can easily replace the external rotating cap according to their own preferences to meet the aesthetic needs of different stages.

[0064] Example 2

[0065] The utility model embodiment provides a lacing device, referring to Figure 8 The lacing device includes a shell 3 and a lacing screw cover structure 1, and the lacing screw cover structure 1 is rotatably arranged on the shell 3, wherein the design and construction of the lacing screw cover structure 1 are the same as the lacing screw cover structure in Example 1, and the lacing screw cover structure 1 includes an inner screw cover 10 and an outer screw cover 20.

[0066] Further, according to an embodiment of the utility model, pulling or pressing the outer rotating cover causes the inner rotating cover to move axially relative to the shell to achieve gear switching of the lace device; screwing the outer rotating cover causes the inner rotating cover to rotate relative to the shell to achieve tightening of the laces.

[0067] In this embodiment, the lacing device can be used to fasten items, and the items to be fastened can be shoes, clothes, hats and bags, or various bags, etc. The items to be fastened can be fastened using the above-mentioned fastening device in conjunction with other components such as lacing guides to tighten the laces to close the openings, and when the above-mentioned fastening device is used, all technical effects of the above-mentioned lacing screw cap structure can be achieved, which will not be described one by one here.

[0068] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the utility model. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine the different embodiments or examples described in this specification and the features of the different embodiments or examples, without contradiction.

[0069] The above description is only a preferred embodiment of the utility model, and does not limit the patent scope of the utility model. All equivalent structural changes made by using the contents of the utility model specification and drawings under the utility model concept, or directly / indirectly used in other related technical fields are included in the patent protection scope of the utility model.

Claims

1. A lace screw cap structure, comprising an inner screw cap and an outer screw cap, wherein the outer screw cap is detachably mounted on the outer side of the inner screw cap, characterized in that: The outer rotating cover is provided with a buckle, and the inner rotating cover is provided with a locking structure at a position corresponding to the buckle, and the buckle and the locking structure are tightly connected to each other so that the outer rotating cover and the inner rotating cover can be linked and connected; The buckle is an elastic buckle, a first gap and a second gap are respectively provided on the outer rotating cover, a buckle is provided between the first gap and the second gap, and the elastic buckle is formed between the buckle and the first gap and the second gap.

2. The lace cover structure according to claim 1, characterized in that: The locking structure is a locking groove, and the elastic buckle and the locking groove are clamped and connected to each other, so that the outer rotating cover can be detachably installed on the outer side of the inner rotating cover.

3. The lace cover structure according to claim 2, characterized in that: A first convex block is provided at a position of the inner rotating cover corresponding to the first slit, and the first convex block is embedded in the first slit; A second convex block is provided at a position of the inner rotating cover corresponding to the second slit, and the second convex block is embedded in the second slit; The locking structure includes a locking plate portion, and the locking groove is formed between the locking plate portion and the inner rotating cover, or the locking groove is formed between the locking plate portion and the first convex block and the second convex block.

4. The lace cover structure according to claim 3, characterized in that: The size and shape of the first protrusion are adapted to the first gap; and / or The size and shape of the second protrusion are matched with the second gap.

5. The lace cover structure according to claim 2, characterized in that: The circumferential width of the locking groove is greater than or equal to the circumferential width of the elastic buckle.

6. The lace screw cap structure according to any one of claims 1 to 5, characterized in that: The said locking structures are respectively provided in plurality; and the said buckles are also respectively provided in plurality.

7. The lace cover structure according to claim 6, characterized in that: The plurality of the latching structures are evenly spaced and distributed on the inner rotating cover; and the plurality of the elastic buckles are also evenly spaced and distributed on the outer rotating cover.

8. A lacing device, characterized in that: It comprises a shell and the lace screw cover structure according to any one of claims 1 to 7, wherein the lace screw cover structure is rotatably arranged on the shell.

9. The lacing device according to claim 8, characterized in that: Pulling or pressing the outer rotating cover causes the inner rotating cover to move axially relative to the shell to achieve gear switching of the lacing device; screwing the outer rotating cover causes the inner rotating cover to rotate relative to the shell to achieve tightening of the lacing.

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