Screw cap structure facilitating face shell replacement and lacing device comprising screw cap structure

Abstract

The utility model discloses a screw cap structure convenient to replace a face shell and a lacing device comprising the same, the screw cap structure convenient to replace the face shell comprises an inner screw cap and the face shell, the face shell is detachably installed on the outer side of the inner screw cap, a clamping block is arranged on the face shell, a separating and combining structure is arranged on the inner screw cap, and the clamping block is detachably installed on the outer side of the face shell. The clamping block is matched with the separation and combination structure to realize clamping and separation of the inner screw cap and the surface shell; the opening and closing structure comprises a first position and a second position, and when the clamping block and the opening and closing structure are connected in a matched mode at the first position, the face shell and the inner screw cap can be connected in a linkage mode. And the face shell can also rotate relative to the inner screw cap, so that the clamping block is rotated to a second position of the separating and combining structure, and the face shell and the inner screw cap are separated from each other at the second position, so that the disassembly between the face shell and the inner screw cap is more convenient, and the requirement of a user for quickly replacing the face shell is met.

Description

Technical Field

[0001] The utility model relates to the technical field of lacing, and in particular to a rotary cover structure for facilitating replacement of a face shell and a lacing device comprising the same. Background Art

[0002] Currently, tightening footwear, clothing, or other items often involves using laces, cords, or other tensioning members. These laces are typically located on the footwear, clothing, or other item, allowing them to tighten the opening of the footwear, clothing, or other item. While existing lacing mechanisms can meet the functional requirements of tightening laces to tighten footwear, clothing, or other items, they are monotonous in appearance and cannot be replaced.

[0003] In order to make the appearance of the lacing mechanism more beautiful, a decorative cover is usually attached to the outside of the screw cap of the lacing tightening mechanism, which makes the entire lacing mechanism more beautiful. Or some friction strips are made, which is conducive to applying force to the screw cap. The connection methods of the screw cap of the lacing tightening mechanism and the decorative cover are usually snap connection, magnetic connection or adhesive fixation. The adhesive fixation makes the decorative cover and the lacing tightening mechanism non-detachable, so the decorative cover cannot be replaced. The magnetic connection method may cause the decorative cover to fall off during use due to the weak magnetic attraction force. Although the ordinary snap connection has the advantage of being detachable, it is often necessary to use tools to pry the decorative cover when disassembling. Improper operation will cause damage to the decorative cover and the screw cap, and the operation requires certain skills. Therefore, it is difficult for users of the lacing device to replace the decorative cover.

[0004] Therefore, there is an urgent need for a lacing device that can satisfy the need for more convenient replacement of decorative face shells. Utility Model Content

[0005] The present invention aims to solve, at least to a certain extent, one of the technical problems in the related art. To this end, one object of the present invention is to provide a rotary cover structure that facilitates the replacement of a face shell, comprising an inner rotary cover and a face shell, wherein the face shell is detachably mounted on the outer side of the inner rotary cover, the face shell is provided with a clamping block, and the inner rotary cover is provided with a separation structure, wherein the clamping block cooperates with the separation structure to achieve the clamping and separation of the inner rotary cover and the face shell;

[0006] The separation and combination structure includes a first position and a second position. When the clamping block is engaged with the separation and combination structure at the first position, the face shell and the inner rotating cover can be linked together; the face shell can also rotate relative to the inner rotating cover to rotate the clamping block to the second position of the separation and combination structure, and separate the face shell and the inner rotating cover from each other at the second position.

[0007] The interlockable connection means that the movement or change of the face shell can cause the inner rotating cover to make corresponding movement or change. The movement of the face shell may cause the movement of the inner rotating cover synchronously, or the inner rotating cover may start to make corresponding synchronous movement after the face shell has moved for a period of time. Therefore, the interlockable connection means that the face shell and the inner rotating cover can be interlocked in a certain stroke, allowing the face shell to have a certain period of free movement. The interlockable connection includes axial linkage and / or circumferential linkage, and the circumferential linkage allows the face shell to have different linkage modes in the clockwise or counterclockwise direction relative to the inner rotating cover, or it can be interlocked only in one circumferential direction and not in the opposite circumferential direction. The "circumferential direction" mentioned in this application refers to the circumferential direction.

[0008] Preferably, a clamping portion is provided at the first position of the split-and-combined structure, and the clamping block is clamped and connected to the clamping portion so that the face shell and the inner rotating cover can be linked together.

[0009] Preferably, the clamping portion is a mechanical structure such as a snap-fitting slot, a through hole, a protrusion, etc. that can cooperate with the clamping block to form a clamping connection relationship.

[0010] More preferably, the engaging portion is configured as a snap-fitting slot.

[0011] Preferably, a separation groove is provided at the second position of the separation structure, and when the clamping block is rotated to the separation groove, the face shell is separated from the inner rotating cover through the separation groove.

[0012] Preferably, the separation groove and the buckle slot are staggered along the circumference of the inner rotating cover. Further, the circumferential width of the buckle slot is greater than or equal to the circumferential width of the clamping block.

[0013] The coordination of the block and the snap-fitting slot ensures axial linkage between the front cover and the inner cover. When the circumferential width of the snap-fitting slot is equal to or substantially equal to the circumferential width of the block, rotation of the front cover can drive synchronous rotation of the inner cover. "Substantially equal" means the width difference is within 10%. When the circumferential width of the snap-fitting slot is greater than the circumferential width of the block, the front cover often needs to idle for a distance until it abuts the sidewall of the snap-fitting slot before it can drive synchronous rotation of the inner cover.

[0014] Further preferably, the circumferential width of the buckling slot is equal to or substantially equal to the circumferential width of the clamping block.

[0015] Furthermore, the separation groove and the buckling slot are staggered at a certain angle along the circumference of the inner rotating cover, and the range of the staggered angle is 5° to 180°.

[0016] Further preferably, the staggered angle ranges from 10° to 120°.

[0017] Furthermore, the separation groove is provided on one side of the buckling slot.

[0018] Preferably, the buckling slot is configured as a groove, and the groove may be a through groove or a common groove.

[0019] Furthermore, according to an embodiment of the present invention, the separation and combination structure further includes a rotational transition portion, which is arranged between the snap-fitting slot and the separation groove, and is used to guide the card block to rotate and transition to the position of the separation groove.

[0020] Furthermore, according to an embodiment of the present invention, the rotational transition portion includes a transition surface, which is adjacent to the side of the snap-fit ​​slot close to the separation groove. When the face shell and the inner rotary cover are rotated and separated, the transition surface is used to guide the card block to leave the snap-fit ​​slot.

[0021] Preferably, the transition surface is a plane or a curved surface.

[0022] Further preferably, the transition surface is a curved surface. That is, the rotational transition portion includes a transition curved surface, which is disposed adjacent to a side of the engagement slot close to the separation groove, and is used to guide the block to leave the engagement slot when the face shell and the inner rotary cover are rotated and separated.

[0023] Furthermore, according to one embodiment of the present invention, the rotational transition portion further includes a rotational guide portion, the rotational guide portion being disposed between the separation groove and the transition surface, and a rotational transition step being formed between the rotational guide portion and the outer side of the inner rotating cover. The rotational transition step is used to rotationally support the clamping block during its rotation into the separation groove.

[0024] Furthermore, according to an embodiment of the present invention, the separation and combination structure also includes an assembly groove, which is located on the outside of the inner rotating cover corresponding to the snap-fit ​​slot. The assembly groove is used to guide the card block to the snap-fit ​​slot when the face shell and the inner rotating cover are combined.

[0025] Furthermore, according to an embodiment of the present invention, the depth of the separation groove gradually becomes shallower from the top end to the bottom end of the separation groove, or the depth of the separation groove gradually becomes shallower from the middle end to the bottom end of the separation groove;

[0026] The depth of the assembling groove gradually increases from the buckling slot to the bottom end of the inner rotating cover.

[0027] The "middle of the separation groove" as used herein refers to any position between the "bottom of the separation groove" and the "top of the separation groove," and is not necessarily located at exactly half the height of the inner separation groove. The location of the "middle of the separation groove" can be determined based on actual circumstances.

[0028] The top of the separation groove can be flush with the top of the inner screw cap, or it can be located in the middle of the inner screw cap; similarly, the top of the engagement slot can be flush with the top of the inner screw cap, or it can be located in the middle of the inner screw cap. In this application, the top and bottom positions of the separation groove are consistent with the top and bottom positions of the inner screw cap.

[0029] Furthermore, at least a portion of the bottom surface of the separation groove is configured as a first inclined surface; at least a portion of the bottom surface of the assembly groove is configured as a second inclined surface. The bottom surfaces of the separation groove and the assembly groove refer to groove bottoms.

[0030] Further preferably, the first and second inclined surfaces have opposite inclination directions. This "opposite inclination directions" means that the first and second inclined surfaces extend in opposite directions from the bottom to the top of the inner screw cap, with one expanding radially outward and the other constricting radially inward. This difference lies in the fact that the separation groove serves as an outlet surface, while the assembly groove serves as an inlet surface. Since the inlet and outlet directions are opposite, the first and second inclined surfaces must have opposite inclination directions to achieve their respective guiding functions.

[0031] Furthermore, according to one embodiment of the present invention, the front cover is provided with a first slit and a second slit, respectively, the clamping block is disposed between the first slit and the second slit, and the clamping block is supported by an elastic plate, the elastic plate being located between the first slit and the second slit, the elastic plate and the clamping block forming an elastic buckle. The presence of the elastic plate enhances the elastic displacement capability of the clamping block, further facilitating the detachable function between the front cover and the inner rotating cover.

[0032] Furthermore, according to an embodiment of the present invention, the splitting and combining structures are provided in plurality, and the clamping blocks are also provided in plurality accordingly.

[0033] Furthermore, the sizes of the multiple card blocks are the same or have differences.

[0034] The plurality of card blocks having differentiated sizes means that the plurality of card blocks include at least two sizes, for example, at least one card block has a size different from the other card blocks, or even each card block in the plurality of card blocks has a size different from the other card blocks.

[0035] Preferably, alignment marks are provided on the face shell and the inner rotating cover to indicate the corresponding card blocks and snap-fitting slots for quick alignment and installation.

[0036] Further preferably, the alignment marks are provided at positions of card blocks with different sizes.

[0037] Furthermore, according to an embodiment of the present invention, a plurality of the splitting and combining structures are evenly spaced apart on the inner rotating cover; and a plurality of the clamping blocks are also correspondingly evenly spaced apart on the surface shell.

[0038] In the above-mentioned rotating cover structure that is convenient for replacing the face shell, a clamping block is provided on the face shell, and a separation and combination structure is provided on the inner rotating cover, so that the face shell can rotate relative to the inner rotating cover; however, since the movement is mutual, the clamping block can also be provided on the inner rotating cover, and the separation and combination structure can be provided on the face shell, and the effect of separating the face shell and the inner rotating cover can also be achieved by rotating the face shell.

[0039] Therefore, the present invention also provides a rotary cover structure for facilitating replacement of a face shell, comprising an inner rotary cover and a face shell, wherein the face shell is detachably mounted on the outer side of the inner rotary cover, the inner rotary cover is provided with a clamping block, and the face shell is provided with a separation and combination structure, wherein the clamping block cooperates with the separation and combination structure to realize the clamping and separation of the inner rotary cover and the face shell;

[0040] The separation and combination structure includes a first position and a second position. When the clamping block is engaged with the separation and combination structure at the first position, the face shell and the inner rotating cover can be linked together; the face shell can also rotate relative to the inner rotating cover to rotate the separation and combination structure to the second position relative to the clamping block, so that the clamping block is engaged with the separation and combination structure at the second position, and the face shell and the inner rotating cover are separated from each other at the second position.

[0041] Another object of the present invention is to provide a lacing device, which includes a shell and the above-mentioned rotary cover structure for facilitating replacement of the face shell, wherein the rotary cover structure for facilitating replacement of the face shell is rotatably arranged on the shell.

[0042] Furthermore, according to one embodiment of the present invention, the lacing device has a winding lacing mode and a loosening lacing mode; in the winding lacing mode, the inner rotating cover of the rotating cover structure is constructed to be rotatable relative to the shell in a tightening direction, but cannot be rotated relative to the shell in a loosening direction, and the face shell can be rotated relative to the inner rotating cover in the loosening direction to rotate the blocking block relative to the separation and combination structure, or to rotate the separation and combination structure relative to the blocking block, so that the blocking block and the separation and combination structure are matched at the second position, and the face shell and the inner rotating cover are separated from each other at the second position.

[0043] Therefore, in the winding and lacing mode, the inner rotating cover of the lacing device and the face shell are linked in the axial and circumferential tightening directions, but in the loosening direction, the face shell can rotate relative to the inner rotating cover, and the two are not linked.

[0044] Preferably, when a blocking block is provided on the face shell and a separation and combination structure is provided on the inner rotating cover, the second position of the separation and combination structure is located on one side of the loosening direction of the first position; the face shell of the rotating cover structure can be rotated relative to the inner rotating cover, so that the blocking block rotates from the first position of the separation and combination structure along the loosening direction to the second position, thereby realizing the separation of the face shell and the inner rotating cover.

[0045] Preferably, a buckling slot is provided at the first position of the split-and-combine structure, and a separation groove is provided at the second position of the split-and-combine structure, and the separation groove is provided on one side of the release direction of the buckling slot.

[0046] Preferably, when a clamping block is provided on the inner rotating cover and a separation and combination structure is provided on the face shell, the first position of the separation and combination structure is located on one side of the loosening direction of the second position; the face shell of the rotating cover structure can be rotated relative to the inner rotating cover, so that the separation and combination structure rotates from the first position to the second position along the loosening direction relative to the clamping block, thereby realizing the separation of the face shell and the inner rotating cover.

[0047] Preferably, a buckling slot is provided at the first position of the split-and-combine structure, and a separation groove is provided at the second position of the split-and-combine structure, and the buckling slot is provided on one side of the release direction of the separation groove.

[0048] The lacing device provided in this application can be used to fasten items such as shoes, clothing, and bags. The present invention provides a screw-on cover structure and a lacing device containing the same for facilitating face shell replacement. The face shell is provided with a clamping block, and an inner screw-on cover is provided with a splitting and combining structure at positions corresponding to the clamping block. The clamping block and the splitting and combining structure cooperate to achieve the clamping and separation of the inner screw-on cover from the face shell. The splitting and combining structure includes a first position and a second position. When the clamping block and the splitting and combining structure are engaged in the first position, the face shell and the inner screw-on cover can be linked together. The face shell can also rotate relative to the inner screw-on cover to rotate the clamping block to the second position of the splitting and combining structure, and at the second position, the face shell and the inner screw-on cover can be separated from each other. The design of the splitting and combining structure makes the assembly and disassembly of the face shell and the inner screw-on cover more convenient. No tools are required; the old face shell can be removed by manually rotating and pulling the face shell, thus meeting the need for quick face shell replacement. The above functions can still be achieved by reversing the setting positions of the clamping block and the splitting and combining structure.

[0049] Additional aspects and advantages of the present invention will be given in part in the following description and will become apparent from the following description or learned through practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0050] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on the structures shown in these drawings without paying any creative work.

[0051] Figure 1 This is a schematic diagram of a screw cap structure for facilitating replacement of a face shell provided in an embodiment of the present utility model;

[0052] Figure 2 yes Figure 1 Schematic diagram of the cross-sectional structure along the AA direction;

[0053] Figure 3 yes Figure 1 An exploded schematic diagram of the screw cap structure for easy replacement of the face shell is shown;

[0054] Figure 4 yes Figure 3 A top view of the inner screw cap in the screw cap structure for easy replacement of the face shell is shown;

[0055] Figure 5 yes Figure 4 A schematic diagram of the cross-sectional structure along the BB direction in the top view of the inner rotating cover is shown;

[0056] Figure 6 This is an exploded view of another screw-cover structure for facilitating replacement of a face shell provided by an embodiment of the present invention;

[0057] Figure 7 yes Figure 6 A schematic structural diagram of the face shell in the screw cap structure from another perspective;

[0058] Figure 8 yes Figure 6 A bottom view of the assembled state of the screw-on cover structure for easy replacement of the face shell is shown;

[0059] Figure 9 yes Figure 8 Schematic diagram of the cross-sectional structure along CC direction;

[0060] Figure 10 yes Figure 1 A schematic diagram of the structure from another perspective when the screw-on cover structure is in the closed state, which facilitates the replacement of the face shell;

[0061] Figure 11 yes Figure 10 A bottom view of the screw cap structure for easy replacement of the face shell is shown;

[0062] Figure 12 yes Figure 10 A bottom view showing the clamping block of the screw-cover structure for facilitating replacement of the face shell rotated to the separation groove;

[0063] Figure 13 yes Figure 10 A schematic diagram of the structure of the cover structure for facilitating replacement of the cover when the cover is separated from the inner cover;

[0064] Figure 14 yes Figure 10 The diagram shows a screw-on cover structure that facilitates replacement of the face shell, with the clamping block facing the assembly groove when replacing the face shell.

[0065] Description of Figure Numbers:

[0066] Inner rotating cover 10, 10'; split and assembling structure 101a, 101b, 101c; snap-fitting slots 1011, 1011a, 1011b, 1011c, 1011A, 1011B, 1011C; separation grooves 1012, 1012a, 1012b; rotation transition portion T; transition arc surfaces 1013, 1013a, 1013b; rotation guide portions 1014, 1014a, 1014b; assembly grooves 1015, 1015a, 1015b; alignment marks 102, 204;

[0067] Surface shells 20, 20'; blocks 201, 201a, 201b, 201c, 201A, 201B, 201C; elastic plate 2012c; first slit 202; second slit 203; elastic buckles B1, B2, B3.

[0068] The realization of the purpose, functional features and advantages of the present invention will be further explained in conjunction with embodiments and with reference to the accompanying drawings. DETAILED DESCRIPTION

[0069] The following describes in detail embodiments of the present invention, examples of which 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 present invention, and should not be construed as limiting the present invention. All other embodiments obtained by persons of ordinary skill in the art based on the embodiments of the present invention without creative effort are within the scope of protection of the present invention.

[0070] 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", etc., indicating the orientation or position relationship, are based on the orientation or position relationship 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 device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0071] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of the technical features being referred to. Thus, a feature specified as "first" or "second" may explicitly or implicitly include one or more of such features. In the description of this utility model, "plurality" means two or more, unless otherwise specifically defined.

[0072] In this utility model, unless otherwise specified or limited, the terms "installed," "connected," "connect," "fixed," etc. should be understood in a broad sense. For example, they can refer to fixed connection, detachable connection, or integral connection; mechanical connection or electrical connection; direct connection or indirect connection through an intermediate medium; and internal communication between two components. Those skilled in the art will understand the specific meanings of the above terms in this utility model based on specific circumstances.

[0073] In the present invention, unless otherwise expressly specified or limited, a first feature being "above" or "below" a second feature may include the first and second features being in direct contact, or may include the first and second features being in contact not directly but through another feature between them. Moreover, a first feature being "above," "above," and "above" a second feature may include the first feature being directly above or obliquely above the second feature, or may simply mean that the first feature is higher in level than the second feature. A first feature being "below," "below," and "below" a second feature may include the first feature being directly below or obliquely below the second feature, or may simply mean that the first feature is lower in level than the second feature.

[0074] The following describes in detail a screw-on cover structure for facilitating replacement of a face shell and a lacing device including the same according to an embodiment of the present invention with reference to the accompanying drawings.

[0075] On the one hand, see Figures 1 to 5The embodiment of the present invention provides a rotary cover structure for facilitating replacement of a face shell, comprising an inner rotary cover 10 and a face shell 20, wherein the face shell 20 is detachably mounted on the outer side of the inner rotary cover 10, and the face shell 20 is provided with clamping blocks 201, 201a, 201b, and 201c, and the inner rotary cover 10 is provided with a separation structure 101a, 101b, and 101c at the corresponding positions of the clamping blocks 201, 201a, 201b, and 201c, and each separation structure 101a, 101b, and 101c includes a first Position P1 and second position P2, wherein a clamping portion is provided at the first position P1. Preferably, in this embodiment, the clamping portion is configured as a snap-fitting slot 1011, 1011a, 1011b, 1011c. The clamping blocks 201, 201a, 201b, 201c are tightly connected to the snap-fitting slots 1011, 1011a, 1011b, 1011c to connect the face shell 20 to the inner rotating cover 10 in a linkage manner. In this embodiment, the circumferential widths of the clamping blocks and the snap-fitting slots are substantially consistent. Figures 1 to 3 As shown in Figure 1 This is a structural diagram showing that the clamping block and the split-and-combine structure are matched at the first position P1, and the face shell 20 and the inner rotating cover 10 are in a buckled state; Figure 2 for Figure 1 The cross-sectional structure diagram at the AA cutting line; Figure 3 The inner rotating cover 10 and the front shell 20 are in a separated state. When the front shell 20 is sleeved onto the outer portion of the inner rotating cover 10, the clamping blocks 201, 201a, 201b, 201c on the front shell 20 are locked with the corresponding snap-fitting slots 1011, 1011a, 1011b, 1011c on the inner rotating cover 10, thereby connecting and fixing the inner rotating cover 10 and the front shell 20 to each other. The inner rotating cover 10 and the front shell 20 are fixed to each other by the clamping blocks 201, 201a, 201b, 201c and the snap-fitting slots 1011, 1011a, 1011b, 1011c, making the assembly of the inner rotating cover 10 and the front shell 20 relatively convenient. During installation, the cover 20 is manually pressed onto the outside of the inner cover 10, and the blocks 201, 201a, 201b, 201c on the cover 20 can be automatically fastened with the snap-fitting slots 1011, 1011a, 1011b, 1011c on the inner cover 10 without the need for other tools. Figure 3The split-and-assemble structures 101a, 101b, and 101c further include an assembly groove. The assembly grooves 1015a and 1015b are located on the outer side of the inner rotating cover 10 at locations corresponding to the snap-fitting slots 1011a and 1011b. The assembly grooves are used to guide the clamping blocks 201a, 201b, and 201c to the snap-fitting slots 1011a, 1011b, and 1011c when the cover 20 and the inner rotating cover 10 are assembled. During the assembly process of the inner rotating cover 10 and the cover 20, the clamping blocks 201a, 201b, and 201c on the cover 20 can be placed in the assembly grooves. By pushing the inner rotating cover 10 and the cover 20 toward each other with external force, the blocks 201a, 201b, 201c can move along the assembly groove to the snap-fitting grooves 1011a, 1011b, 1011c, thereby guiding the movement of the blocks 201a, 201b, 201c. Figure 3 As shown, the depth of the assembly grooves 1015a, 1015b gradually increases from the buckling grooves 1011a, 1011b, 1011c to the bottom end of the inner rotating cover 10. That is, the bottom surface (bottom of the groove) of the assembly grooves 1015a, 1015b is constructed as an inclined surface S1, as shown in FIG. Figure 2 As shown, the inclined surface S1 gradually extends radially outward from the bottom end of the inner rotating cover to the open end (top end) to facilitate the insertion of the cover along the inclined surface and its fastening with the snap-fitting slots. Thus, when the inner rotating cover 10 and the cover 20 are assembled, the clamping blocks 201a, 201b, and 201c can gradually undergo elastic deformation or elastic displacement under the guidance of the assembly grooves until they abut and fasten with the snap-fitting slots, returning the clamping blocks to their original shape or position. Under the action of an external force, the assembly grooves guide the clamping blocks to gradually slide to the snap-fitting slots 1011a, 1011b, and 1011c, making the assembly of the inner rotating cover 10 and the cover 20 more convenient.

[0076] A separation groove 1012, 1012a, 1012b is provided at the second position P2 of the separation structure 101a, 101b, 101c. The separation grooves 1012, 1012a, 1012b are provided on the outer peripheral surface of the inner rotating cover 10 and are close to the buckling slots 1011, 1011a, 1011b, 1011c. The separation grooves 1012, 1012a, 1012b are provided and staggered at a certain angle α with the buckling slots along the circumferential direction of the outer peripheral surface of the inner rotating cover. The staggered angle range is preferably 5° to 180°. Figure 1As shown, in this embodiment, the staggered angle α is 30°. The housing 20 can also rotate relative to the inner rotating cover 10 to rotate the clamping blocks 201, 201a, 201b, 201c to the separation grooves 1012, 1012a, 1012b, and separate the housing 20 from the inner rotating cover 10 through the separation grooves 1012, 1012a, 1012b. The inner rotating cover 10 and the housing 20 are connected via the clamping block-snap-in groove. After the inner rotating cover 10 and the front shell 20 are clamped together by the clamping blocks 201, 201a, 201b, 201c, if it is necessary to directly separate the inner rotating cover 10 and the front shell 20, it is necessary to use other tools to pry the clamping blocks 201, 201a, 201b, 201c so that the clamping blocks 201, 201a, 201b, 201c are disengaged from the snap-fitting slots 1011, 1011a, 1011b, 1011c, and then separate the inner rotating cover 10 and the front shell 20. Therefore, directly separating the clamping blocks on the front shell 20 from the snap-fitting slots on the inner rotating cover 10 is relatively troublesome for the user and requires tools and skills, making replacement of the front shell 20 somewhat difficult.

[0077] In the embodiment of the present invention, a separation groove 1012, 1012a, 1012b is provided on the outer side of the inner rotating cover 10, and the separation groove 1012, 1012a, 1012b is located on the side of the inner rotating cover 10 close to the buckling slots 1011, 1011a, 1011b, 1011c. In this way, when the user needs to separate the inner rotating cover 10 and the cover 20, the cover 20 can be rotated to make the cover 20 and the inner rotating cover 10 rotate relative to each other, so that the clamping blocks 201, 201a, 201b, 201c can rotate out of the corresponding buckling slots 1011, 1011a, 1011b, 1011c and move to the corresponding separation grooves 1012, 1012a, 1012b. In this way, there is no clamping contact surface between the clamping blocks 201, 201a, 201b, 201c and the separation grooves of the inner rotating cover 10. When the cover 20 is pulled by an external force, the cover 20 can drive the clamping blocks 201, 201a, 201b, 201c to slide along the extending direction of the separation grooves 1012, 1012a, 1012b and eventually separate from the inner rotating cover 10. After the clamping blocks 201, 201a, 201b, 201c are separated from the inner rotating cover 10, the inner rotating cover 10 and the cover 20 can be separated from each other. In the embodiment of the present invention, a separation groove 1012, 1012a, 1012b is provided on the outer side of the inner rotating cover 10 near the snap-fitting slots 1011, 1011a, 1011b, 1011c. When the inner rotating cover 10 and the front shell 20 need to be separated from each other, the clamping blocks 201, 201a, 201b, 201c on the front shell 20 are rotated to the separation grooves 1012, 1012a, 1012b to separate the inner rotating cover 10 and the front shell 20. In this embodiment, the circumferential width of the separation groove is substantially the same as the circumferential width of the clamping block. In other embodiments, the circumferential width of the separation groove may also be greater than the circumferential width of the clamping block. The design of the separation groove makes the separation operation of the inner rotating cover 10 and the front shell 20 simpler and easier. The user can separate the inner cover 10 from the face shell 20 by simply rotating and pulling the face shell 20 without the need for other tools, thereby simplifying the replacement operation of the face shell 20. Even users with poor operating skills can freely change the face shell 20 according to their preferences to meet the needs of changing the appearance of the face shell.

[0078] See Figure 4 The split-and-close structures 101a, 101b, and 101c further include a rotation transition portion T, which is provided between the snap-fitting slot 1011 and the separation groove 1012 and is used to guide the card blocks 201a, 201b, and 201c to rotate and transition to the positions of the separation grooves 1012a and 1012b; preferably, as Figure 3 and Figure 4 As shown, the engaging slot 1011 and the separating groove 1012 are connected via the rotation transition portion T. The rotation transition portion T includes a transition arc surface 1013a, 1013b, which is adjacent to the engaging slots 1011a, 1011b, 1011c on one side close to the separating grooves 1012a, 1012b. The transition arc surface 1013a, 1013b is used to guide the clamping blocks 201a, 201b, 201c to smoothly leave the engaging slots when the face shell 20 is rotated and separated from the inner rotating cover 10. Figure 3 As shown in FIG, transition arc surfaces 1013a and 1013b are provided on the side of the engaging slots 1011a, 1011b, and 1011c near the separating grooves 1012a and 1012b. Thus, when the inner rotating cover 10 and the housing 20 need to be separated from each other, the transition arc surfaces can reduce the resistance force exerted on the side walls of the clamping blocks 201a, 201b, and 201c, thereby making the clamping blocks rotate more smoothly and guiding the clamping blocks 201a, 201b, and 201c to move out of the engaging slots more smoothly. The transition arc surfaces 1013a and 1013b can be circular arc surfaces. The arc transition surface on one side of the snap-fitting slots 1011a, 1011b, 1011c can reduce the blocking force on the card blocks 201a, 201b, 201c, so that the card blocks 201a, 201b, 201c can be guided away from the snap-fitting slots 1011a, 1011b, 1011c under the action of appropriate external force.

[0079] See Figure 3 The rotation transition portion T further includes a rotation guide portion 1014a, 1014b, which is arranged between the separation grooves 1012a, 1012b and the transition arc surfaces 1013a, 1013b. A rotation transition step is formed between the rotation guide portion 1014a, 1014b and the outer side of the inner rotating cover 10, and the rotation transition step is used to rotationally support the clamping blocks 201a, 201b, 201c during the process of the clamping blocks 201a, 201b, 201c rotating and moving to the separation grooves 1012a, 1012b. Figure 3As shown in the figure, when the inner rotating cover 10 and the face shell 20 need to be separated from each other, the face shell 20 is rotated to generate relative displacement between the inner rotating cover 10 and the face shell 20, and the blocking force of the transition arc surfaces 1013a and 1013b on the blocks 201a, 201b and 201c is reduced, so that the blocks 201a, 201b and 201c leave the snap-fitting slots 1011a, 1011b and 1011c. After the card blocks 201a, 201b, 201c leave the snap-fitting slots 1011a, 1011b, 1011c, they can enter the rotation guide parts 1014a, 1014b. Since a rotation transition step is formed between the rotation guide parts 1014a, 1014b and the outer side of the inner rotating cover 10, the card blocks 201a, 201b, 201c can be guided to rotate along the rotation transition step through the rotation transition step, and the bottom of the card blocks 201a, 201b, 201c is supported, so that the card blocks 201a, 201b, 201c can be rotated along the rotation transition step to the separation grooves 1012a, 1012b, and then detach from the inner rotating cover 10 through the separation grooves 1012a, 1012b. The rotation transition step can prevent the blocks 201a, 201b, 201c from being separated from the inner rotating cover 10 at the non-separation grooves 1012a, 1012b, thereby preventing the blocks 201a, 201b, 201c from being damaged when being separated from the non-separation grooves 1012a, 1012b under a large pulling force. In one embodiment of the present invention, the depth of the separation grooves 1012a, 1012b can gradually become shallower from the top (open end) to the bottom end of the inner rotating cover 10, so that the bottom surface of the separation groove forms an inclined surface; or, as Figure 5 As shown, the depth of the separation grooves 1012a and 1012b can remain unchanged from the top opening end of the inner rotating cover 10 to the middle portion L, and then gradually become shallower from the middle portion L to the bottom end, so that a local bottom surface of the separation groove forms a slope S2, and the slope S2 serves as a guide surface, so that the inner rotating cover 10 and the surface shell 20 can be gradually and smoothly separated under the action of external force.

[0080] In order to make it easier for the card block to slide along the assembly groove 1015 or the separation groove 1012 when the cover 20 and the inner rotating cover 10 are assembled or separated, it is necessary to increase the elastic deformation ability or elastic displacement ability of the card block. Figure 3The side wall of the housing 20 is provided with a first slit 202 and a second slit 203 on both sides of the corresponding blocks 201a, 201b, and 201c, respectively, so that the side wall of the housing that carries the blocks 201 becomes an elastic plate 2012c, and the blocks 201a, 201b, and 201c are located above the corresponding elastic plates 2012c (partially unlabeled). The elastic plates 2012c (partially unlabeled) and the blocks 201a, 201b, and 201c located above them form elastic buckles B1, B2, and B3. The elastic plates can provide a certain amount of restoring elastic force for the blocks, so that the blocks 201a, 201b, and 201c will not be damaged when the inner rotating cover 10 and the housing 20 are assembled or disassembled. The blocks 201a, 201b, and 201c are lug structures that protrude radially inward relative to the elastic plates so as to contact and engage with the snap-fitting slots. The first slit 202 and the second slit 203 can be formed by engraving or hollowing out the face shell 20, or by injection molding during the production process of the face shell 20. Both methods can make the elastic buckles B1, B2, B3 and the main body of the face shell 20 an integrated component, thereby making the clamping blocks 201a, 201b, 201c less likely to be damaged or detached during use.

[0081] Although the elastic buckles formed by the slits on both sides of the clamping block make the assembly and separation of the face shell and the inner cover more convenient and the clamping block is not easily damaged, the slits on the face shell also limit the appearance design or shape of the face shell. Therefore, the present invention provides another screw cover structure that is convenient for replacing the face shell, see Figures 6 to 8 In this embodiment, no gap is provided on the side wall of the face shell 20'. Preferably, the blocks 201A, 201B, and 201C are integrally formed with the face shell 10'. Preferably, the face shell in this embodiment is a plastic product, and the material of the blocks 201A, 201B, and 201C is plastic. The plastic product itself has a certain elastic deformation ability, so that the blocks have a certain elastic deformation (or elastic displacement) ability in the process of being connected with the snap-fitting slot or separated from the separation groove. Although the elastic displacement amplitude caused by this elastic deformation is small, combined with the design of the assembly groove and the separation groove, the function of replacing the face shell can still be achieved without damaging the face shell structure. Further preferably, in this embodiment, the side walls of the block and the face shell have a certain elastic deformation ability. Compared with this structural design of the face shell Figure 3 The face shell shown is more convenient for designing different decorative appearances and shapes to meet the needs of different customers. Furthermore, in order to reduce the difficulty of assembling the card blocks 201A, 201B, and 201C with the snap-fitting slots or separating them from the separation grooves, the circumferential dimensions of the card blocks 201A, 201B, and 201C can be made smaller, so that the resistance encountered during assembly and force distribution will be reduced accordingly. Figure 6 and Figure 9 The buckle slots 1011A, 1011B, and 1011C of the inner rotary cover 10' are designed to Figure 3 The buckle slots 1011a, 1011b, and 1011c shown are slightly different. Figure 3 The buckle slot is a through slot in the side wall direction of the inner cover (reference Figure 2 and 5 1011), and Figure 6 and Figure 9 The buckling slots 1011, 1011A, 1011B, and 1011C shown are not through slots in the side wall direction of the inner rotating cover. A step is formed between the buckling slots 1011A, 1011B, and 1011C and the assembly groove for clamping the clamping blocks 201A, 201B, and 201C. In this application, no matter what structure the buckling slot has, as long as it can form a step for clamping the clamping blocks. Figure 7 The blocks 201A, 201B, and 201C on the face shell are Figure 2 The front surface structure of the block 201 is also different. Figure 2 As shown, the front surface of the card block 201 includes a guide surface G1, which is an inclined surface, so that the card block can pass through the assembly groove and reach the engagement groove more smoothly; however, there is also a problem, that is, when the elasticity of the card block is large enough or the elastic displacement ability is strong enough, due to the existence of the guide surface G1, the card block can also slide along the side wall of the inner screw cap at the non-assembly groove position, thereby causing assembly errors. In order to improve the accuracy and simplicity of assembly, as Figure 9 As shown, the front surface G2 of the card block is not provided with a guide surface, and the elastic displacement amplitude of the card block in this embodiment is also very small. Therefore, the card block can only slide along the assembly groove to the snap-fitting groove, and cannot slide along other positions of the outer surface of the inner rotating cover, thereby further increasing the accuracy of assembly and also having a certain anti-foolproof function.

[0082] See Figure 3 , the said separation and combination structures 101a, 101b, 101c are respectively provided with a plurality, and the said card blocks 201a, 201b, 201c are also respectively provided with a plurality. Through the combination of the plurality of the separation and combination structures 101a, 101b, 101c with the plurality of the card blocks 201a, 201b, 201c, the face shell 20 can be fastened to the inner rotating cover 10 more smoothly. Among them, the plurality of the fastening slots are evenly spaced on the inner rotating cover 10; the plurality of the card blocks 201a, 201b, 201c are also evenly spaced on the face shell 20. In this way, the fastening force between the inner rotating cover 10 and the face shell 20 can be more uniform, and the fastening between the inner rotating cover 10 and the face shell 20 can be tighter, and the face shell 20 is not prone to accidentally falling off during use. Among them, Figure 3 The multiple blocks 201a, 201b, and 201c shown in the figure have the same size and structure, so the cover 20 can be fastened to the inner cover 10 from multiple angles. Figure 3 In the embodiment shown, the face shell 20 can be buckled with the inner cover 10 every time it rotates 120 degrees. In other preferred embodiments, the face shell can also be designed to be buckled with the inner cover only in a specific orientation. For details, see Figures 6 to 9 The housing 20' is provided with a plurality of blocks 201A, 201B, 201C, and the inner rotating cover is also provided with a plurality of split and close structures (not numbered in the figure), Figure 3 The difference from the illustrated embodiment is that in this embodiment, the width L1 of the card block 201A is greater than the widths L2 and L3 of the card blocks 201B and 201C, and the sizes of the snap-fitting slots, assembly grooves and separation grooves corresponding to the card block 201A are also greater than the sizes of the other two; the differentiated settings of the sizes of different card blocks in this embodiment enable the face shell 20' to snap with the inner rotating cover 10' only from one orientation.

[0083] Furthermore, in order to more quickly find the buckle position of the face shell and the inner screw cover, refer to Figure 6 and Figure 7 , the snap-fitting slots 1011A and the card blocks 201A of the face shell 20' and the inner rotating cover 10' are provided with alignment marks 102 and 204, wherein the differentiated design of the card block 201A size, combined with the alignment marks, has a fool-proofing effect, allowing the user to directly align and install, which is more intuitive and easy to operate. Further optionally, as long as one of the card blocks on the face shell is different in size from the others, fool-proofing can be achieved; for example, among the three card blocks in this embodiment, only one card block may have a size different from the other two, or the sizes of all three card blocks may be different. Regarding the installation alignment mark, it can be set at a card block position different from the other two, or it can be set at other card block positions, as long as the card block and the snap-fitting slot with the corresponding mark belong to a pair of aligned installation combinations. In addition, the alignment mark 102 can be set at at least one or more positions in the bottom of the assembly groove, the bottom of the snap-fitting slot, or the bottom surface of the inner rotating cover corresponding to the snap-fitting slot or the assembly groove. As Figure 6 As shown, the bottom surface of the inner rotating cover 10' and the bottom of the assembly groove are both provided with arrows as alignment marks. Furthermore, the alignment marks on the cover 20' can be provided on the block, on the side wall of the block, or on the side wall or bottom surface of the cover corresponding to the block position. Figure 7 The upper end surface of the block 201A of the housing is provided with an angular groove as an alignment mark. This angular groove has no effect on the elastic deformation ability of the block. In addition, the alignment mark can be of any shape or structure, as long as it can serve as a marking.

[0084] Figure 6 The screw cap structure shown is Figure 3 The other parts of the screw cap structure are consistent with the structure shown. Figure 8 Since the size of the card block 201A is larger than the sizes of the card blocks 201B and 201C, the sizes of the snap-fitting slot and the separation groove corresponding to the card block 201A are also larger than the sizes of the snap-fitting slots and the separation grooves corresponding to the other two card blocks. However, the size of the split-and-combine structure corresponding to the card block 201A is not necessarily larger than the sizes of the split-and-combine structures corresponding to the other two card blocks. Because when the split-and-combine structure also includes a rotational transition portion, the size of the rotational transition portion corresponding to the card block 201A can be smaller than the size of the rotational transition portions corresponding to the other two card blocks. In this case, the total sizes of the three split-and-combine structures are basically the same. Of course, the total sizes of the three split-and-combine structures can also be different or have differences. In this application, there is no restriction on the size of the rotational transition portion, as long as it can achieve the function of guiding the card block to smoothly rotate and transition from the snap-fitting slot to the separation groove.

[0085] Furthermore, in other embodiments of the present invention, the appearance of the face shell is diverse and can be replaced to meet different product application requirements. In one embodiment of the present invention, the face shell can be integrally formed by injection molding using a resin material. The face shell can also be made of hardware materials, soft rubber, etc., and the appearance can be prepared according to actual needs. The face shell of the present invention is easy to disassemble and assemble, and users can easily replace the face shell according to their preferences to meet the aesthetic needs of different stages. Figures 10 to 14 , in this Figures 1 to 5 In the embodiment shown, the process of the inner rotating cover 10 and the face shell 20 (marked with word A) being rotated apart from the original engaged state and then replaced with a new face shell 20 (marked with word B) is further explained.

[0086] like Figure 10 and Figure 11 As shown in FIG, after the inner cover 10 and the face shell 20 are assembled, the original state of the inner cover 10 and the face shell 20 is the buckled state. Among them, the block 201 on the face shell 20 is clamped in the buckled slot 1011 of the inner cover 10 (as shown in FIG. Figure 11 As shown in ), the face shell 20 and the inner rotating cover 10 are fastened to each other. Figure 12 As shown in , when the cover 20 needs to be removed for replacement, external force can be applied to cause the cover 20 and the inner rotating cover 10 to rotate relative to each other, thereby driving the clamping block 201 to leave the buckling slot 1011 from the transition arc surface 1013 on one side of the buckling slot 1011, and after passing through the rotation guide portion 1014, it can be rotated to the separation groove 1012. Figure 13As shown in , after the block 201 reaches the separation groove 1012, an external force is applied to the block in the direction of the separation groove to pull the cover 20 away from the inner cover 10, so that the block 201 can be completely separated from the inner cover 10, so that the inner cover 10 and the cover 20 are separated from each other. Figure 14 As shown in FIG, when a new cover 20 (marked with B) needs to be assembled to the outside of the inner rotating cover 10, the block 201 of the cover 20 is aligned with the corresponding assembly groove 1015, and the cover 20 is pushed toward the inner rotating cover 10 by external force. After the block 201 moves to the end of the assembly groove 1015, the block 201 and the buckle groove 1011 are locked together under the control of the elastic force (as shown in FIG. Figure 11 In this way, the new face shell 20 can be reassembled to the outside of the inner rotating cover 10. Figures 6 to 9 The process of replacing the cover in the embodiment of the rotary cover structure is the same as described above. Figures 1 to 5 The embodiment shown, with Figures 6 to 9 The structural design of the splitting and combining structure of the inner rotating cover in the illustrated embodiment is basically the same, so the two different structures of the face shells can also be replaced with each other, as long as the size of the card block and the splitting and combining structure, and the size of the inner rotating cover and the face shell can match.

[0087] In other preferred embodiments, the clamping block may be disposed on the inner rotating cover, and the separation and combination structure may be disposed on the front shell, without affecting the front shell's ability to separate from the inner rotating cover by rotation. However, compared to a rotating cover structure in which the clamping block is disposed on the front shell and the separation and combination structure is disposed on the inner rotating cover, since the front shell is a replaceable component, disposing the separation and combination structure on the front shell will increase the mold cost for the front shell.

[0088] On the other hand, the present invention also provides a lacing device, comprising a housing and the aforementioned rotary cover structure for facilitating replacement of a face shell, wherein the rotary cover structure for facilitating replacement of a face shell is rotatably disposed on the housing. The lacing device has a winding lacing mode and a loosening lacing mode. In the winding lacing mode, the inner rotary cover of the rotary cover structure is configured to rotate only in a tightening direction relative to the housing, but not in a loosening direction. The second position of the separation structure is located on the clockwise side of the first position. Since the engaging slot is disposed at the first position and the separating groove is disposed at the second position, the separating groove of the separation structure of the rotary cover structure is disposed on the loosening direction side of the engaging slot. When the lacing device is in the winding and lacing mode, since the inner rotating cover is configured to be unable to rotate relative to the housing in the loosening direction, by applying an external force at this time, the face shell is rotated relative to the housing in the loosening direction, and then the face shell can be rotated relative to the inner rotating cover in the loosening direction. Since the separation groove is provided on the loosening side of the snap-fitting groove, when the face shell is rotated relative to the inner rotating cover in the loosening direction, the block on the face shell rotates from the position of the snap-fitting groove to the position of the separation groove, and then the face shell is separated from the inner rotating cover. Therefore, when the lacing device is configured to only allow the inner rotating cover to rotate relative to the housing in the tightening direction in the winding and lacing mode, in this mode, the face shell can be rotated relative to the inner rotating cover in the loosening direction, thereby realizing the function of replacing the face shell.

[0089] Specifically, including Figures 10 to 14 The lacing device of the screw cap structure shown can use an elastic pawl-ratchet as a reverse stop mechanism, so that when the elastic pawl is engaged with the ratchet, the inner screw cap can only rotate relative to the housing in the direction of tightening the lacing. Figure 12 In the view angle shown, the clockwise direction is the direction of loosening the lace (the direction in which the pawl prevents the ratchet teeth from rotating, in this embodiment the ratchet teeth are the moving parts and the pawl is the fixed part), and the counterclockwise direction is the direction of tightening the lace. Figure 3 The second position P2 of the separation structure is located on the clockwise side of the first position P1, and the separation groove 1012 is located on the clockwise side of the buckle slot 1011, that is, on the side of the loosening direction. This arrangement allows the inner cover to not rotate relative to the shell in the loosening direction when the lacing device is in the winding and lacing mode, while the face shell can rotate relative to the inner cover in the loosening direction, thereby achieving the function of separating from the inner cover by rotating the face shell. The direction of rotation of the face shell relative to the inner cover is not limited to the clockwise direction, but is the non-reversing direction of the lacing device. Figures 10 to 14 In the embodiment shown, the anti-reverse direction is Figure 12The viewing angle shown is clockwise, but in other embodiments, it can also be counterclockwise. The direction of rotation of the face shell relative to the inner rotating cover only needs to be consistent with the anti-reversal direction of the lacing device. Accordingly, the separation groove should be located on the side of the anti-reversal direction relative to the snap-fit ​​slot. In this way, it can be ensured that in the winding and lacing mode, the inner rotating cover remains stationary, and the face shell can rotate relative to the inner rotating cover, thereby achieving the purpose of separating the face shell from the inner rotating cover.

[0090] The above is for the rotating cover structure in which the card block is arranged on the face shell and the separation and combination structure is arranged on the inner rotating cover. Furthermore, in other preferred embodiments, when the card block is located on the inner rotating cover and the separation and combination structure is located on the face shell, the first position of the separation and combination structure is located on the side of the loosening direction of the second position; a snap-fit ​​card slot is provided at the first position of the separation and combination structure, and a separation groove is provided at the second position of the separation and combination structure, and the snap-fit ​​card slot is provided on the side of the loosening direction of the separation groove.

[0091] Furthermore, the anti-reverse mechanism in the present invention is not limited to an elastic pawl-ratchet mechanism, and any mechanical structure that can achieve the anti-reverse function can be used. For example, the anti-reverse mechanism applicable to this patent includes but is not limited to the anti-reverse mechanisms disclosed in patents CN221662582U, CN216723374U, and CN208993976U. When the rotary cover structure for facilitating the replacement of the face shell provided by the present invention is applied to a lacing device with an anti-reverse mechanism, when the inner rotary cover can only rotate in a tightening direction relative to the housing, the face shell can rotate in a loosening direction relative to the inner rotary cover, thereby causing the block to rotate to the position of the separation groove, thereby achieving separation of the face shell and the inner rotary cover.

[0092] The lacing device can be used to fasten items. The items to be fastened can be shoes, clothes, hats, bags, or various bags. 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 lacing to close the opening, and when the above-mentioned fastening device is used, all the technical effects of the above-mentioned lacing screw cap structure can be achieved, which will not be described one by one here.

[0093] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" 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 present invention. 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 can be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art can combine and combine different embodiments or examples described in this specification and features of different embodiments or examples without contradiction.

[0094] The above description is only a preferred embodiment of the present invention and does not limit the patent scope of the present invention. All equivalent structural transformations made by using the contents of the present invention specification and drawings under the utility model concept, or direct / indirect application in other related technical fields are included in the patent protection scope of the present invention.

Claims

1. A rotary cover structure for facilitating replacement of a face shell, comprising an inner rotary cover and a face shell, wherein the face shell is detachably mounted on the outer side of the inner rotary cover, characterized in that: The face shell is provided with a clamping block, and the inner rotating cover is provided with a separation structure, and the clamping block cooperates with the separation structure to realize the clamping and separation of the inner rotating cover and the face shell; The separation and combination structure includes a first position and a second position. When the clamping block is engaged with the separation and combination structure at the first position, the face shell and the inner rotating cover can be linked together; the face shell can also rotate relative to the inner rotating cover to rotate the clamping block to the second position of the separation and combination structure, and separate the face shell and the inner rotating cover from each other at the second position.

2. The screw cap structure for facilitating replacement of the face shell according to claim 1, characterized in that: A clamping portion is provided at the first position of the split-and-close structure, and the clamping block is clamped and connected to the clamping portion so that the face shell and the inner rotating cover can be linked together.

3. The screw cap structure for facilitating replacement of the face shell according to claim 2, characterized in that: A separation groove is provided at the second position of the separation structure. When the clamping block is rotated to the separation groove, the face shell is separated from the inner rotating cover through the separation groove.

4. The screw cap structure for facilitating replacement of the face shell according to claim 3, characterized in that: The separation groove and the clamping portion are staggered along the circumferential direction of the inner rotating cover.

5. The screw cap structure for facilitating replacement of the face shell according to claim 4, characterized in that: The split-and-close structure further includes a rotational transition portion, which is disposed between the clamping portion and the separation groove and is used to guide the clamping block to rotate and transition to the position of the separation groove.

6. The screw cap structure for facilitating replacement of the face shell according to claim 2, characterized in that: The separation and combination structure also includes an assembly groove, which is located on the outside of the inner rotating cover corresponding to the clamping portion. The assembly groove is used to guide the clamping block to the clamping portion when the face shell and the inner rotating cover are combined.

7. The screw cap structure for facilitating replacement of the face shell according to claim 3, characterized in that: The depth of the separation groove gradually becomes shallower from the top end to the bottom end of the separation groove, or the depth of the separation groove gradually becomes shallower from the middle end to the bottom end of the separation groove.

8. The screw cap structure for facilitating replacement of the face shell according to claim 6, characterized in that: The depth of the assembling groove gradually increases from the clamping portion to the bottom end of the inner rotating cover.

9. The screw cap structure for facilitating replacement of the face shell according to claim 1, characterized in that: There are multiple split and combination structures, and there are correspondingly multiple clamping blocks.

10. The screw cap structure for facilitating replacement of the face shell according to claim 9, characterized in that: The sizes of the plurality of card blocks are the same or have differences.

11. A rotary cover structure for facilitating replacement of a face shell, comprising an inner rotary cover and a face shell, wherein the face shell is detachably mounted on the outer side of the inner rotary cover, characterized in that: The inner rotating cover is provided with a clamping block, and the surface shell is provided with a separation and combination structure, and the clamping block cooperates with the separation and combination structure to realize the clamping and separation of the inner rotating cover and the surface shell; The separation and combination structure includes a first position and a second position. When the clamping block is engaged with the separation and combination structure at the first position, the face shell and the inner rotating cover can be linked together; the face shell can also rotate relative to the inner rotating cover to rotate the separation and combination structure relative to the clamping block to the second position, and separate the face shell and the inner rotating cover from each other at the second position.

12. A lacing device, characterized in that: It comprises a shell and a rotary cover structure for facilitating replacement of a face shell as described in any one of claims 1 to 11, wherein the rotary cover structure for facilitating replacement of a face shell is rotatably arranged on the shell.

13. The lacing device according to claim 12, wherein the lacing device has a winding lacing mode and a loosening lacing mode; In the winding and lacing mode, the inner rotating cover of the rotating cover structure is constructed to be rotatable in a tightening direction relative to the shell, but cannot be rotated in a loosening direction relative to the shell, and the face shell can be rotated in the loosening direction relative to the inner rotating cover.

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