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

Abstract

The invention discloses a screw cap structure with a face shell convenient to replace and a lacing device comprising the screw cap structure, the screw cap structure with the face shell convenient to replace 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 present application relates to the technical field of lacing, in particular to a rotating cover structure with a replaceable surface shell and a lacing device comprising the same. BACKGROUND

[0002] Currently, lacing, rope or other tightening members are often used to tighten shoes, hats or other articles. The lacing is usually located on the shoes, hats or other articles, so that the lacing can tighten the opening of the shoes, hats or other articles. Although the lacing mechanism in the prior art can meet the functional requirements of tightening the lacing to tighten the shoes, hats or other articles, the appearance of the lacing mechanism is single and cannot be replaced.

[0003] In order to make the appearance of the lacing mechanism more beautiful, a decorative surface shell is usually sleeved outside the rotating cover of the lacing tightening mechanism, so that the whole lacing mechanism is more beautiful. Or do some friction strips, which are beneficial to the force applied to the rotating cover. The connection between the rotating cover of the lacing tightening mechanism and the decorative surface shell is usually one of buckle connection, magnetic connection or adhesive fixing connection. The adhesive fixing makes the decorative surface shell and the lacing tightening mechanism non-detachable, so the decorative surface shell cannot be replaced. The magnetic connection method may cause the decorative surface shell to fall off due to too small magnetic attraction force during use. Although the ordinary buckle connection has the advantage of being detachable, it often needs to use tools to pry the decorative surface shell when disassembling, improper operation may damage the decorative surface shell and the rotating cover, and the operation requires certain skills, so it is difficult for the user of the lacing device to replace the decorative surface shell.

[0004] Therefore, there is an urgent need for a lacing device that can replace the decorative surface shell more conveniently. SUMMARY

[0005] The present application aims to at least solve one of the technical problems in the related art. To this end, one object of the present application is to provide a rotating cover structure with a replaceable surface shell, comprising an inner rotating cover and a surface shell, the surface shell being detachably mounted on the outer side of the inner rotating cover, the surface shell being provided with a clamping block, the inner rotating cover being provided with a split structure, the clamping block and the split structure cooperating to realize the clamping and separation of the inner rotating cover and the surface shell.

[0006] The split structure comprises a first position and a second position, when the clamping block and the split structure are connected at the first position, the surface shell and the inner rotating cover are linkable; the surface shell can also rotate relative to the inner rotating cover to rotate the clamping block to the second position of the split structure, and separate the surface shell and the inner rotating cover from each other at the second position.

[0007] The linkable connection means that the movement or change of the face shell can cause the inner rotary cover to move or change accordingly. The movement of the face shell can cause the movement of the inner rotary cover synchronously, or the movement of the face shell can cause the movement of the inner rotary cover synchronously after a period of time. Therefore, the linkable connection means that the face shell and the inner rotary cover can be linked in a certain stroke, and the face shell is allowed to have a certain free movement period. The linkable connection includes axial linkage and / or circumferential linkage, and the circumferential linkage allows the face shell to be linked in different ways in the clockwise direction or the counterclockwise direction relative to the inner rotary cover, or can be linked in only one direction in the circumferential direction, and not linked in the opposite circumferential direction. The "circumferential direction" in the present application refers to the circumferential direction.

[0008] Preferably, a clamping portion is arranged at the first position of the split and combination structure, and the clamping block and the clamping portion are clamped and connected to linkably connect the face shell and the inner rotary cover.

[0009] Preferably, the clamping portion is a mechanical structure such as a buckling clamping groove, a through hole, a protrusion, etc., which can form a clamping connection relationship with the clamping block.

[0010] More preferably, the clamping portion is configured as a buckling clamping groove.

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

[0012] Preferably, the separation groove and the buckling clamping groove are staggered in the circumferential direction of the inner rotary cover. Further, the circumferential width of the buckling clamping groove is greater than or equal to the circumferential width of the clamping block.

[0013] The cooperation of the clamping block and the buckling clamping groove makes the face shell and the inner rotary cover necessarily linkable in the axial direction. When the circumferential width of the buckling clamping groove is equal to or substantially equal to the circumferential width of the clamping block, the rotation of the face shell can drive the inner rotary cover to rotate synchronously. The "substantially equal" means that the width difference is within 10%. When the circumferential width of the buckling clamping groove is greater than the circumferential width of the clamping block, the face shell often needs to idle for a distance before it abuts against the side wall of the buckling clamping groove to drive the inner rotary cover to rotate synchronously.

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

[0015] Further, the separation groove and the buckling clamping groove are staggered at a certain angle in the circumferential direction of the inner rotary cover, and the staggered angle ranges from 5° to 180°.

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

[0017] Further, the separation groove is arranged at one side of the clamping slot.

[0018] Preferably, the clamping slot is configured as a groove, which can be a through groove or a common groove.

[0019] Further, according to an embodiment of the present application, the split and combination structure further comprises a rotation transition part arranged between the clamping slot and the separation groove, for guiding the rotation transition of the clamping block to the position of the separation groove.

[0020] Further, according to an embodiment of the present application, the rotation transition part comprises a transition surface arranged adjacent to one side of the clamping slot close to the separation groove, for guiding the clamping block to leave the clamping slot when the face shell and the inner rotary cover are rotated to be separated.

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

[0022] Further preferably, the transition surface is an arc surface. That is, the rotation transition part comprises a transition arc surface arranged adjacent to one side of the clamping slot close to the separation groove, for guiding the clamping block to leave the clamping slot when the face shell and the inner rotary cover are rotated to be separated.

[0023] Further, according to an embodiment of the present application, the rotation transition part further comprises a rotation guide part arranged between the separation groove and the transition surface, and a rotation transition step is formed between the rotation guide part and the outer side of the inner rotary cover. The rotation transition step is used for rotationally supporting the clamping block during the rotation of the clamping block to the separation groove.

[0024] Further, according to an embodiment of the present application, the split and combination structure further comprises an assembly groove arranged at the outer side of the inner rotary cover corresponding to the clamping slot, for guiding the clamping block to the clamping slot when the face shell and the inner rotary cover are combined.

[0025] Further, according to an embodiment of the present application, the depth of the separation groove gradually decreases from the top end to the bottom end of the separation groove, or the depth of the separation groove gradually decreases from the middle part to the bottom end of the separation groove.

[0026] The depth of the assembly groove gradually increases from the clamping slot to the bottom end of the inner rotary cover.

[0027] In this application, "the middle part of the separation groove" refers to any position between "the bottom end of the separation groove" and "the top end of the separation groove," and is not required to be exactly half the height of the inner separation groove. The selection of the position of "the middle part of the separation groove" can be determined according to the actual situation.

[0028] The top of the separating groove can be flush with the top of the inner screw cap or located in the middle of the inner screw cap; similarly, the top of the engaging slot can be flush with the top of the inner screw cap or located in the middle of the inner screw cap. In this application, the positional relationship between the top and bottom of the separating groove is consistent with the positional relationship between the top and bottom of the inner screw cap.

[0029] Furthermore, at least a portion of the bottom surface of the separating groove is constructed as a first inclined surface; at least a portion of the bottom surface of the assembly groove is constructed as a second inclined surface. The bottom surface of the separating groove and the assembly groove refers to the bottom of the groove.

[0030] More preferably, the first and second inclined surfaces have opposite inclination directions. "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; one expands radially outward, and the other contracts radially inward. This difference lies in the fact that the separation groove serves as a guide surface, while the assembly groove serves as a guide surface. Because the guide and guide directions are opposite, the opposite inclination directions of the first and second inclined surfaces are necessary to achieve the corresponding guiding function.

[0031] Furthermore, according to one embodiment of the present invention, the faceplate is provided with a first gap and a second gap, and the locking block is disposed between the first gap and the second gap. The locking block is supported by an elastic plate, which is located between the first gap and the second gap, and the elastic plate and the locking block form an elastic latch. The presence of the elastic plate enhances the elastic displacement capability of the locking block, which is more conducive to realizing the detachable function between the faceplate and the inner screw cap.

[0032] Furthermore, according to one embodiment of the present invention, the splitting and merging structures are provided in multiple ways, and the card blocks are also provided in multiple ways.

[0033] Furthermore, the dimensions of the multiple card blocks are either the same or different.

[0034] The difference in size of the multiple card blocks means that the multiple card blocks include at least two size specifications. For example, at least one card block has a different size from the other card blocks, or even each card block in the multiple card blocks has a different size.

[0035] Preferably, the faceplate and the inner rotating cover are provided with alignment marks to indicate the corresponding locking blocks and fastening slots for quick alignment and installation.

[0036] Further preferably, the alignment marks are arranged at the positions of the size-differentiated card blocks.

[0037] Further, according to an embodiment of the present application, the plurality of the split-and-join structures are uniformly spaced on the inner rotary cover; and the plurality of the card blocks are also uniformly spaced on the face shell.

[0038] In the above-mentioned rotary cover structure with the face shell being convenient to replace, the card blocks are arranged on the face shell, the split-and-join structures are arranged on the inner rotary cover, and the face shell is rotatable relative to the inner rotary cover. However, since the movements are mutual, the card blocks can also be arranged on the inner rotary cover, and the split-and-join structures can be arranged on the face shell, so that the effect of separating the face shell from the inner rotary cover by rotating the face shell can also be achieved.

[0039] Therefore, the present application further provides a rotary cover structure with a face shell being convenient to replace, comprising an inner rotary cover and a face shell, the face shell being detachably arranged on the outer side of the inner rotary cover, the inner rotary cover being provided with card blocks, the face shell being provided with split-and-join structures, the card blocks and the split-and-join structures being cooperated to realize the clamping and separation of the inner rotary cover and the face shell.

[0040] The split-and-join structures comprise a first position and a second position, when the card blocks and the split-and-join structures are connected at the first position, the face shell and the inner rotary cover are linkably connected; the face shell is also rotatable relative to the inner rotary cover, so as to rotate the split-and-join structures relative to the card blocks to the second position, so that the card blocks and the split-and-join structures are connected at the second position, and the face shell and the inner rotary cover are separated from each other at the second position.

[0041] Another object of the present application is to provide a lacing device, which comprises a shell and the above-mentioned rotary cover structure with a face shell being convenient to replace, wherein the rotary cover structure with the face shell being convenient to replace is rotatably arranged on the shell.

[0042] Further, according to an embodiment of the present application, 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 be rotatable relative to the shell in a tightening direction, but not rotatable relative to the shell in a loosening direction, and the face shell is rotatable relative to the inner rotary cover in the loosening direction, so as to rotate the card blocks relative to the split-and-join structures, or rotate the split-and-join structures relative to the card blocks, so that the card blocks and the split-and-join structures are connected at the second position, and the face shell and the inner rotary cover are separated from each other at the second position.

[0043] Therefore, in the winding lacing mode, the inner rotary cover and the face shell of the lacing device are linkable in the axial and circumferential tightening direction, but in the loosening direction, the face shell can be rotatable relative to the inner rotary cover, and the two are not linkable.

[0044] Preferably, when the clamping block is arranged on the face shell and the split-merge structure is arranged on the inner rotary cover, the second position of the split-merge structure is located on one side of the first position in the loosening direction; the face shell of the rotary cover structure can rotate relative to the inner rotary cover, so that the clamping block is rotated from the first position to the second position in the loosening direction by the split-merge structure, thereby realizing the separation of the face shell and the inner rotary cover.

[0045] Preferably, the first position of the split-merge structure is provided with a buckling clamping groove, and the second position of the split-merge structure is provided with a separation groove, and the separation groove is arranged on one side of the buckling clamping groove in the loosening direction.

[0046] Preferably, when the clamping block is arranged on the face shell and the split-merge structure is arranged on the inner rotary cover, the second position of the split-merge structure is located on one side of the first position in the loosening direction; the face shell of the rotary cover structure can rotate relative to the inner rotary cover, so that the clamping block is rotated from the first position to the second position in the loosening direction by the split-merge structure, thereby realizing the separation of the face shell and the inner rotary cover.

[0047] Preferably, the first position of the split-merge structure is provided with a buckling clamping groove, and the second position of the split-merge structure is provided with a separation groove, and the separation groove is arranged on one side of the buckling clamping groove in the loosening direction.

[0048] The lacing device provided by the application can be used for lacing of articles such as shoes, clothes, hats and bags. The rotary cover structure facilitating replacement of the face shell and the lacing device comprising the same provided by the application are characterized in that: a clamping block is arranged on the face shell, a split-merge structure is arranged at a position corresponding to the clamping block on the inner rotary cover, the clamping block and the split-merge structure cooperate to realize clamping and separation of the inner rotary cover and the face shell; the split-merge structure comprises a first position and a second position, when the clamping block and the split-merge structure are connected at the first position, the face shell and the inner rotary cover are connected in linkage; the face shell can also rotate relative to the inner rotary cover to rotate the clamping block to the second position of the split-merge structure, and separate the face shell and the inner rotary cover from each other at the second position. The split-merge structure is designed to make the assembly and disassembly of the face shell and the inner rotary cover more convenient, without the need for tools, and only manual rotation and pulling of the face shell are needed to disassemble the old face shell, thereby meeting the requirement of quick replacement of the face shell. The arrangement positions of the clamping block and the split-merge structure are exchanged, and the above functions can still be realized.

[0049] Additional aspects and advantages of the application will be set forth in part in the description which follows, and in part will become apparent to those skilled in the art upon examination of the following or can be learned by practice of the application. BRIEF DESCRIPTION OF DRAWINGS

[0050] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the following will briefly introduce the drawings needed to be used in the embodiments or prior art description. Obviously, the drawings in the following description only show some embodiments of the present application, and for those skilled in the art, other drawings can also be obtained from the structures shown in these drawings without any creative effort.

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

[0052] Figure 2 is a schematic diagram of a cross-sectional structure along the direction A-A in Figure 1

[0053] Figure 3 is a schematic diagram of an exploded view of the screw cap structure for facilitating replacement of a face shell shown in Figure 1

[0054] Figure 4 is a top view of an inner screw cap in the screw cap structure for facilitating replacement of a face shell shown in Figure 3

[0055] Figure 5 is a schematic diagram of a cross-sectional structure along the direction B-B in the top view of the inner screw cap shown in Figure 4

[0056] is an exploded view of another screw cap structure for facilitating replacement of a face shell provided in an embodiment of the present application; Figure 6

[0057] is a schematic diagram of a structure of the face shell in the screw cap structure shown in Figure 7 Figure 6

[0058] is a bottom view of the screw cap structure for facilitating replacement of a face shell in an assembled state shown in Figure 8 Figure 6 is a schematic diagram of a cross-sectional structure along the direction C-C in

[0059] Figure 9 Figure 8 is a schematic diagram of a structure of another view in a fastened state of the screw cap structure for facilitating replacement of a face shell shown in

[0060] Figure 10 is a bottom view of the screw cap structure for facilitating replacement of a face shell shown in Figure 1

[0061] Figure 11 is a bottom view of the screw cap structure for facilitating replacement of a face shell shown in Figure 10

[0062] Figure 12 is a bottom view of the screw cap structure for facilitating replacement of a face shell shown in Figure 10 ​​​​​​​​The card block of the cap structure facilitating replacement of the face shell is rotated to the separation groove, and a bottom view is shown.

[0063] Figure 13 is Figure 10 The structure schematic diagram when the face shell is separated from the inner cap in the cap structure facilitating replacement of the face shell is shown.

[0064] Figure 14 is Figure 10 The schematic diagram when the card block of the cap structure facilitating replacement of the face shell is directly opposite the assembly groove during replacement of the face shell is shown.

[0065] Explanation of reference numerals:

[0066] Inner cap 10, 10'; split and combine structure 101a, 101b, 101c; buckling card slot 1011, 1011a, 1011b, 1011c, 1011A, 1011B, 1011C; separation groove 1012, 1012a, 1012b; rotation transition part T; transition arc surface 1013, 1013a, 1013b; rotation guide part 1014, 1014a, 1014b; assembly groove 1015, 1015a, 1015b; alignment mark 102, 204;

[0067] Face shell 20, 20'; card block 201, 201a, 201b, 201c, 201A, 201B, 201C; elastic plate 2012c; first gap 202; second gap 203; elastic buckle B1, B2, B3.

[0068] The implementation, functional features and advantages of the present application will be further described with reference to the embodiments and the accompanying drawings. DETAILED DESCRIPTION

[0069] The embodiments of the present application are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals represent the same or similar elements or elements having the same or similar functions throughout. The embodiments described below by referring to the accompanying drawings are exemplary and are intended to explain the present application, and cannot be understood as a limitation of the present application, and all other embodiments obtained by those skilled in the art without creative labor on the basis of the embodiments in the present application belong to the scope of protection of the present application.

[0070] In the description of the present application, it is to be understood that the orientations or positional relationships indicated by the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "circumferential", "radial", and the like are based on the orientations or positional relationships shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the present application.

[0071] In addition, the terms "first", "second", "third", etc. are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined with "first", "second", etc. can explicitly or implicitly include one or more of the features. In the description of the present application, the meaning of "a plurality of" is two or more, unless otherwise explicitly specified and limited.

[0072] In the present application, unless otherwise explicitly specified and limited, the terms "mounting", "connecting", "connecting", "fixing" and the like should be broadly understood, for example, it can be fixedly connected, or it can be detachably connected, or integrally connected; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium; it can be the communication inside two elements. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0073] In the present application, unless otherwise explicitly specified and limited, the first feature "above" or "below" the second feature can include the first and second features directly contacting, or the first and second features not directly contacting but contacting through another feature between them. Moreover, the first feature "above", "above" and "above" the second feature includes the first feature directly above and obliquely above the second feature, or only indicates that the horizontal height of the first feature is higher than that of the second feature. The first feature "below", "below" and "below" the second feature includes the first feature directly below and obliquely below the second feature, or only indicates that the horizontal height of the first feature is less than that of the second feature.

[0074] The structure of the cap with replaceable face shell and the lacing device comprising the same according to the embodiments of the present application will be described in detail below with reference to the drawings.

[0075] In one aspect, referring to Figures 1 to 5This invention provides a screw-on cap structure for easy replacement of the faceplate, including an inner screw cap 10 and a faceplate 20. The faceplate 20 is detachably installed on the outside of the inner screw cap 10. The faceplate 20 is provided with locking blocks 201, 201a, 201b, and 201c. The inner screw cap 10 is provided with splitting and engaging structures 101a, 101b, and 101c at positions corresponding to the locking blocks 201, 201a, 201b, and 201c. Each splitting and engaging structure 101a, 101b, and 101c includes a first... Positions P1 and P2 are provided, wherein a snap-fit ​​part is provided at the first position P1. Preferably, in this embodiment, the snap-fit ​​part is constructed as snap-fit ​​grooves 1011, 1011a, 1011b, and 1011c. The snap-fit ​​blocks 201, 201a, 201b, and 201c are snapped together with the snap-fit ​​grooves 1011, 1011a, 1011b, and 1011c to enable the interlocking connection between the face shell 20 and the inner rotating cover 10. In this embodiment, the circumferential widths of the snap-fit ​​blocks and the snap-fit ​​grooves are basically the same. Figures 1 to 3 As shown, Figure 1 This is a schematic diagram of the structure in which the locking block and the disassembly / merging structure are engaged at the first position P1, and the front shell 20 and the inner screw cover 10 are in a snap-fit ​​state. Figure 2 for Figure 1 Cross-sectional structure diagram at the AA section line; Figure 3 The inner screw cap 10 and the outer shell 20 are in a separated state. After the outer shell 20 is fitted onto the outside of the inner screw cap 10, the locking blocks 201, 201a, 201b, and 201c on the outer shell 20 engage with the corresponding fastening slots 1011, 1011a, 1011b, and 1011c on the inner screw cap 10, thereby connecting and fixing the inner screw cap 10 and the outer shell 20 together. The inner screw cap 10 and the outer shell 20 are fixed together by the locking blocks 201, 201a, 201b, and 201c engaging with the fastening slots 1011, 1011a, 1011b, and 1011c, making the installation and assembly of the inner screw cap 10 and the outer shell 20 relatively convenient. During installation, the faceplate 20 is manually pressed onto the outside of the inner screw cap 10. The locking blocks 201, 201a, 201b, and 201c on the faceplate 20 automatically engage with the locking slots 1011, 1011a, 1011b, and 1011c on the inner screw cap 10 without the need for any other tools. Further preferably, see [reference needed]. Figure 3, the split and combination structure 101a, 101b, 101c further comprises a set of assembly grooves, the assembly grooves 1015a, 1015b are located at the outer side of the inner rotating cover 10 corresponding to the buckling clamping grooves 1011a, 1011b, and are used to guide the clamping blocks 201a, 201b, 201c to the buckling clamping grooves 1011a, 1011b, 1011c when the face shell 20 and the inner rotating cover 10 are combined. During the assembly process of the inner rotating cover 10 and the face shell 20, the clamping blocks 201a, 201b, 201c on the face shell 20 can be placed at the assembly grooves. By pushing the inner rotating cover 10 and the face shell 20 to move closer to each other by external force, the clamping blocks 201a, 201b, 201c can be moved along the assembly grooves to the buckling clamping grooves 1011a, 1011b, 1011c, realizing the movement guidance of the clamping blocks 201a, 201b, 201c. Preferably, as shown in Figure 3 , the depth of the assembly grooves 1015a, 1015b gradually deepens from the buckling clamping grooves 1011a, 1011b, 1011c to the bottom end of the inner rotating cover 10. That is, the bottom surface (slot bottom) of the assembly grooves 1015a, 1015b is configured as a slope S1, as shown in Figure 2 , the slope S1 gradually extends in a radially outward direction from the bottom end of the inner rotating cover to the opening end (top end), so as to guide the face shell to enter and buckle with the buckling clamping groove. In this way, when the inner rotating cover 10 and the face shell 20 are combined, the clamping blocks 201a, 201b, 201c can gradually elastically deform or elastically displace under the guidance of the assembly grooves until they abut and buckle with the buckling clamping grooves, and then return to their original state or position. Under the action of external force, the assembly grooves guide the clamping blocks to gradually slide to the buckling clamping grooves 1011a, 1011b, 1011c, so that the combination of the inner rotating cover 10 and the face shell 20 is more convenient.

[0076] The split and combination structure 101a, 101b, 101c is provided with a separation groove 1012, 1012a, 1012b at the second position P2, the separation groove 1012, 1012a, 1012b is arranged on the outer circumferential surface of the inner rotating cover 10, and is arranged close to the buckling clamping groove 1011, 1011a, 1011b, 1011c and is offset by an angle α along the circumferential direction of the outer circumferential surface of the inner rotating cover, and the offset angle range is preferably 5°-180°, as shown in Figure 1In the embodiment shown, the angle α of the staggered arrangement is 30°. The face cover 20 can also be rotated relative to the inner rotary cover 10 to rotate the clamping blocks 201, 201a, 201b, 201c to the separation grooves 1012, 1012a, 1012b, and separate the face cover 20 from the inner rotary cover 10 through the separation grooves 1012, 1012a, 1012b. Since the inner rotary cover 10 and the face cover 20 are connected through the clamping blocks and the clamping grooves. When the inner rotary cover 10 and the face cover 20 are clamped by the clamping blocks 201, 201a, 201b, 201c, if it is needed to directly separate the inner rotary cover 10 from the face cover 20, other tools are needed to pry the clamping blocks 201, 201a, 201b, 201c, so that the clamping blocks 201, 201a, 201b, 201c are separated from the clamping grooves 1011, 1011a, 1011b, 1011c, and then the inner rotary cover 10 and the face cover 20 are separated from each other. Therefore, directly separating the clamping blocks on the face cover 20 from the clamping grooves on the inner rotary cover 10 is relatively troublesome for the user, and tools and skills are needed, resulting in a certain difficulty in replacing the face cover 20.

[0077] In the embodiment of the present application, a separation groove 1012, 1012a, 1012b is arranged 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 clamping groove 1011, 1011a, 1011b, 1011c. In this way, when it is necessary to separate the inner rotating cover 10 and the face shell 20, the face shell 20 can be rotated to make the face shell 20 and the inner rotating cover 10 relatively rotate, so that the clamping block 201, 201a, 201b, 201c can rotate away from the corresponding buckling clamping groove 1011, 1011a, 1011b, 1011c and move to the position of the corresponding separation groove 1012, 1012a, 1012b. In this way, the clamping block 201, 201a, 201b, 201c and the separation groove of the inner rotating cover 10 do not have clamping abutting surfaces, and when the face shell 20 is pulled by external force, the face shell 20 can drive the clamping block 201, 201a, 201b, 201c to slide along the extension direction of the separation groove 1012, 1012a, 1012b and finally separate from the inner rotating cover 10. When the clamping block 201, 201a, 201b, 201c separates from the inner rotating cover 10, the inner rotating cover 10 and the face shell 20 can be separated from each other. In the embodiment of the present application, a separation groove 1012, 1012a, 1012b is arranged on the outer side of the inner rotating cover 10 close to the buckling clamping groove 1011, 1011a, 1011b, 1011c, and when it is necessary to separate the inner rotating cover 10 and the face shell 20, the clamping block 201, 201a, 201b, 201c on the face shell 20 is rotated to the separation groove 1012, 1012a, 1012b, so that the inner rotating cover 10 and the face shell 20 can be separated from each other. In the embodiment, the circumferential width of the separation groove is basically the same as the circumferential width of the clamping block, and in other embodiments, the circumferential width of the separation groove can 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 face shell 20 more simple and easy. The user only needs to rotate and pull the face shell 20 by hand to separate the inner rotating cover 10 and the face shell 20, without the need for other tools, thereby simplifying the replacement operation of the face shell 20. Even users with poor operation ability can change the face shell 20 according to their own preferences to meet the needs of changing the appearance of the face shell.

[0078] Referring to Figure 4 , the separation and combination structure 101a, 101b, 101c further comprises a rotating transition part T, which is arranged between the buckling clamping groove 1011 and the separation groove 1012, and is used to guide the clamping block 201a, 201b, 201c to rotate and transition to the position of the separation groove 1012a, 1012b; preferably, as Figure 3 and Figure 4As shown, the buckle slot 1011 and the separation groove 1012 are communicated through the rotation transition T. The rotation transition T includes a transition arc surface 1013a, 1013b, which is arranged adjacent to the buckle slot 1011a, 1011b, 1011c near the separation groove 1012a, 1012b. The transition arc surface 1013a, 1013b is used to guide the clamping block 201a, 201b, 201c to smoothly leave the buckle slot when the face shell 20 and the inner rotary cover 10 are rotated and separated. Figure 3 As shown in the middle, the transition arc surface 1013a, 1013b is arranged on the side of the buckle slot 1011a, 1011b, 1011c near the separation groove 1012a, 1012b. In this way, when the inner rotary cover 10 and the face shell 20 need to be separated from each other, the transition arc surface can reduce the blocking force on the side wall of the clamping block 201a, 201b, 201c, so that the rotation of the clamping block is more smooth, thereby guiding the clamping block 201a, 201b, 201c to more smoothly move away from the buckle slot. The transition arc surface 1013a, 1013b can be a circular arc surface. Through the circular arc transition surface on one side of the buckle slot 1011a, 1011b, 1011c, the blocking force on the clamping block 201a, 201b, 201c can be reduced, so that the clamping block 201a, 201b, 201c can be guided to leave the buckle slot 1011a, 1011b, 1011c under the action of appropriate external force.

[0079] Referring to Figure 3 The rotation transition T also includes a rotation guide 1014a, 1014b, which is arranged between the separation groove 1012a, 1012b and the transition arc surface 1013a, 1013b. The rotation guide 1014a, 1014b and the outside of the inner rotary cover 10 form a rotation transition step, which is used to rotate and support the clamping block 201a, 201b, 201c during the rotation and movement of the clamping block 201a, 201b, 201c to the separation groove 1012a, 1012b. Figure 3As shown in the figure, when it is needed to separate the inner rotary cover 10 and the face shell 20, the face shell 20 is rotated to make the inner rotary cover 10 and the face shell 20 have relative displacement, and the blocking force of the transition arc surface 1013a, 1013b to the clamping blocks 201a, 201b, 201c is reduced, so that the clamping blocks 201a, 201b, 201c are separated from the buckling clamping groove 1011a, 1011b, 1011c. After the clamping blocks 201a, 201b, 201c are separated from the buckling clamping groove 1011a, 1011b, 1011c, the rotary guide part 1014a, 1014b can be entered, and the rotary transition step is formed between the rotary guide part 1014a, 1014b and the outer side of the inner rotary cover 10. The clamping blocks 201a, 201b, 201c can be guided to rotate along the rotary transition step through the rotary transition step, and the bottom of the clamping blocks 201a, 201b, 201c is supported, so that the clamping blocks 201a, 201b, 201c can be rotated along the rotary transition step to the separation groove 1012a, 1012b, and then separated from the inner rotary cover 10 through the separation groove 1012a, 1012b. The clamping blocks 201a, 201b, 201c can be separated from the inner rotary cover 10 through the rotary transition step, so that the clamping blocks 201a, 201b, 201c are not damaged when they are separated from the inner rotary cover 10 along the non-separation groove 1012a, 1012b under the action of a large pulling force. In an embodiment of the present application, the depth of the separation groove 1012a, 1012b can gradually decrease from the top end (opening end) to the bottom end of the inner rotary cover 10, so that the bottom surface of the separation groove forms an inclined surface; or, as shown in the figure, the depth of the separation groove 1012a, 1012b can remain unchanged from the top end opening end to the middle L of the inner rotary cover 10, and then gradually decrease from the middle L to the bottom end, so that the partial bottom surface of the separation groove forms an inclined surface S2 as a guide surface, so that the inner rotary cover 10 and the face shell 20 can be gradually and smoothly separated under the action of an external force. Figure 5

[0080] In order to make the clamping blocks more easily slide along the assembly groove 1015 or the separation groove 1012 when the face shell 20 and the inner rotary cover 10 are assembled or separated, the elastic deformation ability or the elastic displacement ability of the clamping blocks needs to be increased. Referring to Figure 3 ​The side wall of the face shell 20 is provided with a first gap 202 and a second gap 203 corresponding to the positions of the clamping blocks 201a, 201b and 201c, so that the side wall of the face shell bearing the clamping blocks 201 becomes an elastic plate 2012c, and the clamping blocks 201a, 201b and 201c are located above the corresponding elastic plates 2012c (partially not labeled), and the elastic plates 2012c (partially not labeled) and the clamping blocks 201a, 201b and 201c located thereon form elastic buckles B1, B2 and B3. The elastic plate can provide a certain reset elastic force for the clamping block, and when the inner screw cap 10 and the face shell 20 are combined or disassembled, the clamping blocks 201a, 201b and 201c will not be damaged. The clamping blocks 201a, 201b and 201c are lug structures and protrude radially inward relative to the elastic plate to contact and buckle the clamping groove. The first gap 202 and the second gap 203 can be formed by etching or hollowing out on the face shell 20, or can be formed by injection molding during the injection molding production process of the face shell 20. These two methods can make the elastic buckles B1, B2 and B3 and the main body of the face shell 20 an integrated component, thereby preventing the clamping blocks 201a, 201b and 201c from being damaged or separated during use.

[0081] Although the gaps on both sides of the clamping blocks form elastic buckles, which make the face shell and the inner screw cap more convenient to assemble and disassemble, and the clamping blocks are not easily damaged, the gaps on the face shell also limit the design and modeling of the face shell. Therefore, the present application provides another screw cap structure for conveniently replacing the face shell, as shown in Figures 6 to 8 In this embodiment, the side wall of the face shell 20' is not provided with a gap, and preferably, the clamping 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 clamping blocks 201A, 201B and 201C are made of plastic. The plastic product itself has a certain elastic deformation capability, so that the clamping blocks have a certain elastic deformation (or elastic displacement) capability during the clamping or separation of the clamping blocks and the clamping groove. Although the elastic deformation results in a small elastic displacement, in combination with the design of the assembly groove and the separation groove, the function of replacing the face shell can still be realized without damaging the structure of the face shell. Further preferably, the side wall of the clamping block and the face shell in this embodiment has a certain elastic deformation capability. Compared with the face shell shown in Figure 3 the structure design of the face shell is more convenient for designing different decorative appearances and models to meet the needs of different customers. Further, in order to reduce the difficulty of assembling or separating the clamping blocks 201A, 201B and 201C and the clamping groove, the circumferential size of the clamping blocks 201A, 201B and 201C can be made smaller, so that the resistance during assembly and separation will also be reduced. Further, as shown in Figure 6and Figure 9 The design of the snap-fit ​​slots 1011A, 1011B, and 1011C of the inner screw cap 10' is consistent with... Figure 3 The snap-fit ​​slots 1011a, 1011b, and 1011c shown are slightly different, among which... Figure 3 The snap-fit ​​groove is a through groove on the side wall of the inner screw cap (see reference). Figure 2 and 5 (of 1011), and Figure 6 and Figure 9 The shown snap-fit ​​grooves 1011, 1011A, 1011B, and 1011C are not through grooves in the side wall direction of the inner screw cap. A step is formed between the snap-fit ​​grooves 1011A, 1011B, and 1011C and the assembly groove, used to secure the locking blocks 201A, 201B, and 201C. In this application, regardless of the structure of the snap-fit ​​groove, it is acceptable as long as it forms a step for securing the locking blocks. Furthermore, Figure 7 The shown faceplate has card blocks 201A, 201B, and 201C. Figure 2 The front surface structure of the shown card block 201 is also different, such as Figure 2 As shown, the front surface of the locking block 201 includes a guide surface G1, which is an inclined surface, allowing the locking block to move more smoothly from the assembly groove to the engagement slot. However, a problem also exists: if the locking block has sufficient elasticity or strong elastic displacement capability, due to the presence of the guide surface G1, the locking block can also slide along the side wall of the inner screw cap at a position outside the assembly groove, leading to assembly errors. To improve the accuracy and ease of assembly, such as Figure 9 As shown, the front surface G2 of the card block does not have an inlet surface, and the elastic displacement range 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-fit ​​slot, and cannot slide along other positions on the outer side of the inner screw cover, thereby further increasing the accuracy of assembly and also having a certain foolproof function.

[0082] See Figure 3 Multiple of the separating and engaging structures 101a, 101b, and 101c are provided, and multiple corresponding locking blocks 201a, 201b, and 201c are also provided. Through the cooperation of multiple separating and engaging structures 101a, 101b, and 101c with multiple locking blocks 201a, 201b, and 201c, the faceplate 20 can be more stably fastened to the inner screw-on cover 10. Multiple fastening slots are evenly spaced on the inner screw-on cover 10; multiple locking blocks 201a, 201b, and 201c are also evenly spaced on the faceplate 20. This ensures a more uniform fastening force between the inner screw-on cover 10 and the faceplate 20, resulting in a tighter fit and reducing the likelihood of the faceplate 20 accidentally falling off during use. Figure 3The plurality of clamping blocks 201a, 201b, 201c shown have consistent sizes, so the face shell 20 can be buckled with the inner rotary cover 10 from multiple angles, and specifically to Figure 3 In the embodiment shown, the face shell 20 can be buckled with the inner rotary cover 10 every 120° of rotation. In other preferred embodiments, the face shell can also be designed to be buckled with the inner rotary cover only in one specific orientation, and specifically, refer to Figures 6 to 9 The face shell 20' is provided with a plurality of clamping blocks 201A, 201B, 201C, and the inner rotary cover is also provided with a plurality of split and combination structures (not labeled on the figure), and Figure 3 Unlike the embodiment shown, in this embodiment, the width L1 of the clamping block 201A is greater than the widths L2, L3 of the clamping blocks 201B, 201C, and the sizes of the buckling clamping groove, the assembly groove, and the separation groove corresponding to the clamping block 201A are also greater than those of the other two; the differential arrangement of the sizes of the different clamping blocks in this embodiment makes the face shell 20' buckle with the inner rotary cover 10' only in one orientation.

[0083] Further, in order to more quickly find the buckling orientation of the face shell and the inner rotary cover, refer to Figure 6 and Figure 7 The buckling clamping groove 1011A and the clamping block 201A of the face shell 20' and the inner rotary cover 10' are provided with alignment marks 102 and 204, wherein the differential design of the size of the clamping block 201A, combined with the alignment marks, has a foolproof effect, so that the user can directly align the installation, and it is more intuitive and easy to operate. Further optionally, as long as one of the clamping blocks on the face shell has a size different from the others, the foolproof effect can be achieved; for example, in this embodiment, only one of the three clamping blocks can have a size different from the other two, or the sizes of the three clamping blocks can all be different. Regarding the alignment marks for installation, they can be provided on the position of the clamping block that is different from the other two, or on the positions of the other clamping blocks, as long as the clamping block and the buckling clamping groove provided with the corresponding marks belong to a pair of combinations for alignment installation. In addition, the alignment mark 102 can be provided on at least one or more positions of the groove bottom of the assembly groove, the groove bottom of the buckling clamping groove, or the bottom surface of the inner rotary cover corresponding to the buckling clamping groove or the assembly groove. As shown in Figure 6 The bottom surface of the inner rotary cover 10' and the groove bottom of the assembly groove are both provided with arrows as alignment marks. Further, the alignment marks on the face shell 20' can be provided on the clamping blocks, or on the side walls of the clamping blocks, or on the side walls or the bottom surface of the face shell corresponding to the positions of the clamping blocks. Refer to Figure 7 The upper end surface of the clamping block 201A of the face shell is provided with an angular groove as an alignment mark. This angular groove has no effect on the elastic deformation capability of the clamping block. In addition, the shape of the alignment mark is not limited, and the structural form is also not limited, as long as it can play a marking role.

[0084] Figure 6The screw cap structure shown is similar to Figure 3 The other parts of the screw cap structure shown are structurally identical. Optionally, refer to... Figure 8 Since the size of card block 201A is larger than that of card blocks 201B and 201C, the sizes of the engaging slot and disengaging groove corresponding to card block 201A are also larger than those of the other two card blocks. However, the size of the disengaging structure corresponding to card block 201A does not necessarily have to be larger than that of the disengaging structures corresponding to the other two card blocks. This is because when the disengaging structure also includes a rotational transition section, the size of the rotational transition section corresponding to card block 201A can be smaller than the size of the rotational transition sections corresponding to the other two card blocks, in which case the total size of the three disengaging structures is basically the same. Of course, the total size of the three disengaging structures can also be different or have variations. In this application, the size of the rotational transition section is not limited, as long as it can guide the card block to smoothly rotate from the engaging slot to the disengaging groove.

[0085] Furthermore, in other embodiments of the present invention, the faceplate has diverse appearance styles and can be replaced to meet different product application requirements. In one embodiment of the present invention, the faceplate can be injection molded from resin material in one piece; the faceplate can also be made of metal materials, soft rubber, etc., and the appearance can be prepared according to actual needs. The faceplate of the present invention is easy to assemble and disassemble, and users can easily replace the faceplate according to their own preferences to meet different aesthetic needs at different stages. See also Figures 10 to 14 Here Figures 1 to 5 The process of replacing the inner screw cap 10 and the outer shell 20 (marked with the letter A) from their original snap-fit ​​state with a new outer shell 20 (marked with the letter B) after they are rotated apart is further illustrated in the embodiment shown.

[0086] like Figure 10 and Figure 11 As shown, after the inner screw cap 10 and the face shell 20 are assembled, their initial state is a snap-fit ​​state. Specifically, the locking block 201 on the face shell 20 is engaged in the snap-fit ​​groove 1011 of the inner screw cap 10 (e.g., ...). Figure 11 (As shown in the diagram), in this way, the faceplate 20 and the inner screw cap 10 are fastened together. Figure 12 As shown, when the faceplate 20 needs to be removed for replacement, external force can be applied to cause the faceplate 20 and the inner screw cap 10 to rotate relative to each other, thereby causing the locking block 201 to leave the locking groove 1011 from the transition arc surface 1013 on one side of the locking groove 1011, and after rotating the guide part 1014, it can be rotated to the separation groove 1012. Figure 13As shown in FIG. 1 1, after the clamping block 201 reaches the separation groove 1012, the face cover 20 can be pulled away from the inner screw cap 10 by applying an external force in the direction opposite to the direction of the separation groove, so that the clamping block 201 can be completely separated from the inner screw cap 10, and the inner screw cap 10 and the face cover 20 are separated from each other. As shown in FIG. 12, when the face cover 20 is separated from the inner screw cap 10, the face cover 20 can be easily removed from the inner screw cap 10 by rotating the face cover 20. Figure 14 As shown in FIG. 13, when a new face cover 20 (labeled as B) needs to be assembled to the outer side of the inner screw cap 10, the clamping block 201 of the face cover 20 is aligned with the corresponding assembly groove 1015, and the face cover 20 is pushed towards the inner screw cap 10 by an external force. After the clamping block 201 moves to the end of the assembly groove 1015, the clamping block 201 and the clamping groove 1011 are clamped to each other under the control of the elastic force (as shown in FIG. 14). In this way, the new face cover 20 can be reassembled to the outer side of the inner screw cap 10. Similarly, Figure 11 As shown in FIG. 15, the process of replacing the face cover in the screw cap structure embodiment is the same as described above. Further preferably, as shown in FIG. 16, the clamping block 201 of the face cover 20 is aligned with the corresponding assembly groove 1015, and the face cover 20 is pushed towards the inner screw cap 10 by an external force. After the clamping block 201 moves to the end of the assembly groove 1015, the clamping block 201 and the clamping groove 1011 are clamped to each other under the control of the elastic force (as shown in FIG. 17). In this way, the new face cover 20 can be reassembled to the outer side of the inner screw cap 10. Figures 6 to 9 As shown in FIG. 18, the process of replacing the face cover in the screw cap structure embodiment is the same as described above. Further preferably, as shown in FIG. 19, the clamping block 201 of the face cover 20 is aligned with the corresponding assembly groove 1015, and the face cover 20 is pushed towards the inner screw cap 10 by an external force. After the clamping block 201 moves to the end of the assembly groove 1015, the clamping block 201 and the clamping groove 1011 are clamped to each other under the control of the elastic force (as shown in FIG. 20). In this way, the new face cover 20 can be reassembled to the outer side of the inner screw cap 10. Figures 1 to 5 Figures 6 to 9 As shown in FIG. 21, the face cover of the screw cap structure embodiment is the same as described above. Further preferably, as shown in FIG. 22, the clamping block 201 of the face cover 20 is aligned with the corresponding assembly groove 1015, and the face cover 20 is pushed towards the inner screw cap 10 by an external force. After the clamping block 201 moves to the end of the assembly groove 1015, the clamping block 201 and the clamping groove 1011 are clamped to each other under the control of the elastic force (as shown in FIG. 23). In this way, the new face cover 20 can be reassembled to the outer side of the inner screw cap 10.

[0087] In other preferred embodiments, the clamping block can be arranged on the inner screw cap, and the split structure can be arranged on the face cover, without affecting the function of the face cover being separated from the inner screw cap by rotation. However, compared with the screw cap structure in which the clamping block is arranged on the face cover and the split structure is arranged on the inner screw cap, since the face cover is a replaceable part, arranging the split structure on the face cover will increase the mold opening cost of the face cover.

[0088] ​In another aspect, the present application also provides a strap device comprising a housing and the above-mentioned rotary cap structure for facilitating replacement of the face cover, wherein the rotary cap structure is rotatably arranged on the housing. The strap device has a winding strap mode and a loosening strap mode. In the winding strap mode, the inner rotary cap of the rotary cap structure is configured to be rotatable only in a tightening direction relative to the housing and not rotatable in a loosening direction. The second position of the split-and-engage structure is located on the clockwise side of the first position. Since the buckle slot is arranged at the first position and the split groove is arranged at the second position, the split groove of the split-and-engage structure of the rotary cap structure is arranged on the loosening direction side of the buckle slot. When the strap device is in the winding strap mode, since the inner rotary cap is configured to be not rotatable in the loosening direction relative to the housing, the face cover can be rotated in the loosening direction relative to the inner rotary cap by applying an external force, and since the split groove is arranged on the loosening direction side of the buckle slot, the clamping block on the face cover is rotated from the position of the buckle slot to the position of the split groove when the face cover is rotated in the loosening direction relative to the inner rotary cap, so that the face cover can be separated from the inner rotary cap. Therefore, when the strap device is configured to allow the inner rotary cap to be rotatable only in the tightening direction relative to the housing in the winding strap mode, the face cover can be rotated in the loosening direction relative to the inner rotary cap in this mode, so that the function of replacing the face cover is achieved.

[0089] Specifically, the strap device comprising the rotary cap structure as shown in Figures 10 to 14 may use an elastic pawl-ratchet as a reverse stopping mechanism, so that when the elastic pawl engages with the ratchet, the inner rotary cap can only be rotated in the direction of tightening the strap relative to the housing. In the view angle shown in Figure 12 , the clockwise direction is the direction of loosening the strap (the direction in which the pawl prevents the rotation of the teeth of the ratchet, and in this embodiment, the teeth of the ratchet are the moving part and the pawl is the fixed part), and the counterclockwise direction is the direction of tightening the strap. In combination with Figure 3 , the second position P2 of the split-and-engage structure is located on the clockwise side of the first position P1, and the split groove 1012 is located on the clockwise side of the buckle slot 1011, i.e., the loosening direction side. In this way, in the winding strap mode of the strap device, since the inner rotary cap cannot be rotated in the loosening direction relative to the housing, the face cover can be rotated in the loosening direction relative to the inner rotary cap, thereby achieving the function of separating the face cover from the inner rotary cap by rotating the face cover. The direction in which the face cover is rotated relative to the inner rotary cap is not limited to the clockwise direction, but is the reverse stopping direction of the strap device. In the embodiment shown in Figures 10 to 14 , the reverse stopping direction is the Figure 12The rotation direction of the face shell relative to the inner rotating cap is clockwise in the illustrated perspective, but in other embodiments, it can also be counterclockwise, as long as the rotation direction of the face shell relative to the inner rotating cap is consistent with the direction of the anti-reverse rotation of the lacing device, and correspondingly, the separation groove is located on the side of the anti-reverse rotation relative to the buckle slot, so that in the winding lacing mode, the inner rotating cap remains stationary, and the face shell can rotate relative to the inner rotating cap, thereby achieving the purpose of separating the face shell from the inner rotating cap.

[0090] The above is for the rotating cap structure in which the clamping block is arranged on the face shell and the split and combination structure is arranged on the inner rotating cap. Further, in other preferred embodiments, when the clamping block is arranged on the inner rotating cap and the split and combination structure is arranged on the face shell, the first position of the split and combination structure is located on the loosening side of the second position; the first position of the split and combination structure is provided with a buckle slot, the second position of the split and combination structure is provided with a separation groove, and the buckle slot is arranged on the loosening side of the separation groove.

[0091] Further, the anti-reverse rotation mechanism in the present application is not limited to the elastic pawl-pulley mechanism, and any mechanical structure that can achieve the anti-reverse rotation function can be used, for example, the anti-reverse rotation mechanisms disclosed in patents CN221662582U, CN216723374U, and CN208993976U can be used in the present application. When the rotating cap structure for facilitating replacement of the face shell is applied to a lacing device with an anti-reverse rotation mechanism, the face shell can rotate relative to the inner rotating cap in the loosening direction when the inner rotating cap can only rotate relative to the shell in the tightening direction, so that the clamping block is rotated to the separation groove position, and the face shell and the inner rotating cap are separated.

[0092] The lacing device can be used to tighten articles, and the articles to be tightened can be shoes, clothes, hats, bags, and various bags, etc. The above-mentioned tightening device can be used in cooperation with other components such as a lacing guide to tighten the lacing to close the opening, and all the technical effects of the above-mentioned lacing rotating cap structure can be achieved when the above-mentioned tightening device is used, which will not be described again.

[0093] In the description of the present specification, the description of the terms "one embodiment", "some embodiments", "an example", "a specific example", or "some examples" means that the specific features, structures, materials or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present application. In the present specification, the illustrative description of the above-mentioned terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any suitable manner in any one or more embodiments or examples. Furthermore, different embodiments or examples described in the present specification and the features of different embodiments or examples can be combined and combined by those skilled in the art without contradiction.

[0094] The above merely describes the preferred embodiments of the present application, and is not intended to limit the patent scope of the present application. Any equivalent structural transformation, direct / indirect application in other related technical fields, or the like, made under the inventive concept of the present application, using the content of the present application specification and drawings, are included in the patent protection scope of the present application.

Claims

1. A screw-on cap structure for easy replacement of the outer shell, comprising an inner screw-on cap and an outer shell, wherein the outer shell is detachably mounted on the outside of the inner screw-on cap, characterized in that, The outer shell is provided with a locking block, and the inner screw cap is provided with a splitting and engaging structure. The locking block and the splitting and engaging structure cooperate to achieve the locking and unlocking of the inner screw cap and the outer shell. The splitting and joining structure includes a first position and a second position. When the locking block and the splitting and joining structure are engaged at the first position, the face shell and the inner screw cover can be linked together. The face shell can also rotate relative to the inner screw cover to rotate the locking block to the second position of the splitting and joining structure, and separate the face shell and the inner screw cover from each other at the second position.

2. The screw-on cap structure for easy replacement of the faceplate according to claim 1, characterized in that, A snap-fit ​​part is provided at the first position of the split-and-joint structure, and the snap-fit ​​block is snapped into place with the snap-fit ​​part so that the outer shell and the inner rotating cover can be linked together.

3. The screw-on cap structure for easy replacement of the faceplate according to claim 2, characterized in that, A separation groove is provided at the second position of the split structure. When the locking block is rotated to the separation groove, the face shell separates from the inner screw cover through the separation groove.

4. The screw-on cap structure for easy replacement of the faceplate according to claim 3, characterized in that, The separation groove and the snap-fit ​​portion are offset circumferentially from each other along the inner screw cap.

5. The screw-on cap structure for easy replacement of the faceplate according to claim 4, characterized in that, The splitting structure also includes a rotation transition section, which is disposed between the snap-fit ​​section and the separation groove, and is used to guide the snap-fit ​​block to rotate to the position of the separation groove.

6. The screw-on cap structure for easy replacement of the faceplate according to claim 2, characterized in that, The splitting structure also includes an assembly groove, which is located on the outside of the inner screw cap and corresponds to the snap-fit ​​portion. The assembly groove is used to guide the snap-fit ​​block to the snap-fit ​​portion when the face shell and the inner screw cap are combined.

7. The screw-on cap structure for easy replacement of the faceplate according to claim 3, characterized in that, The depth of the separation groove gradually decreases from the top to the bottom, or the depth of the separation groove gradually decreases from the middle to the bottom.

8. The screw-on cap structure for easy replacement of the faceplate according to claim 6, characterized in that, The depth of the assembly groove gradually increases from the snap-fit ​​portion to the bottom of the inner screw cap.

9. The screw-on cap structure for easy replacement of the faceplate according to claim 1, characterized in that, The splitting and merging structures are provided in multiple ways, and the corresponding card blocks are also provided in multiple ways.

10. The screw-on cap structure for easy replacement of the faceplate according to claim 9, characterized in that, The multiple card blocks are either the same size or have different sizes.

11. A screw-on cap structure for easy replacement of the faceplate, comprising an inner screw-on cap and a faceplate, wherein the faceplate is detachably mounted on the outside of the inner screw-on cap, characterized in that, The inner screw cap is provided with a locking block, and the outer shell is provided with a splitting structure. The locking block and the splitting structure cooperate to achieve the locking and separation of the inner screw cap and the outer shell. The separation and engagement structure includes a first position and a second position. When the locking block and the separation and engagement structure are engaged at the first position, the face shell and the inner screw cover can be linked together. The face shell can also rotate relative to the inner screw cover to rotate the separation and engagement structure relative to the locking block to the second position, and separate the face shell and the inner screw cover from each other at the second position.

12. A lacing device, characterized in that, The device includes a housing and a screw-on cap structure for easy replacement of the faceplate as described in any one of claims 1-11, wherein the screw-on cap structure for easy replacement of the faceplate is rotatably disposed on the housing.

13. The lacing device according to claim 12, wherein the lacing device has a winding lacing mode and a releasing lacing mode; characterized in that, In the winding tie mode, the inner screw cap of the screw cap structure is configured to rotate relative to the housing in the tightening direction but not relative to the housing in the loosening direction, while the outer shell can rotate relative to the inner screw cap in the loosening direction.

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