The detachable lacing device uses shoelace loops for footwear.

Abstract

The invention relates to a removable lacing device using a shoelace loop for footwear and, more specifically, to a removable lacing device using a shoelace loop for footwear, which includes a shoelace length adjuster which has, on one side, a removable part of the length adjuster on which a locking groove is formed, in which, in the locking groove, the shoelace loop is passed through the shoelace eyelet to be fastened and unfastened by winding and unwinding the length adjuster, so that the desired shoelace length adjuster can be customized and readily attached to the user's shoe.

Description

Detachable shoelace fastener utilizing shoelace loops

[0001] The present invention relates to a detachable shoelace tightening device utilizing a shoelace loop, and more particularly, to a detachable shoelace tightening device utilizing a shoelace loop, which has a length adjustment means attachment / detachment portion formed on one side of a length adjustment means, which can be tightened and released according to the winding and unwinding of the length adjustment means by fixing a shoelace loop through a shoelace hole, so that the user can easily attach a desired length adjustment means to a user's shoe, etc.

[0002] Shoes like sneakers are equipped with shoelaces to ensure a proper fit for each individual's foot. After putting on the shoes, wearers should tighten the laces to ensure a secure fit between the shoe and their foot, ensuring a safe and comfortable walk.

[0003] Meanwhile, it is very cumbersome to loosen and retighten shoelaces every time you put on or take off your shoes, and many lace length adjustment devices have been developed and proposed to alleviate this inconvenience.

[0004] For example, Korean Patent No. 959800 (published on May 28, 2010) includes a fixed housing, a rotating housing that is rotatably coupled to the fixed housing, a winding drum provided in the fixed and rotating housings and on which a string is wound or unwound, a first tooth type and a second tooth type provided on one side of one of the fixed and rotating housings but provided along a direction in which the fixed and rotating housings are coupled to each other, a latch provided on another housing of the fixed and rotating housings that is not provided with the first tooth type and the second tooth type and that interacts with the first tooth type or the second tooth type so that a string can be wound or unwound on the winding drum, at least one guide projection provided to protrude upward from the upper portion of the winding drum, a projection guide portion formed on the rotating housing and accommodating and guiding the guide projection, a free-curved spring coupled to the upper portion of the rotating housing, and a latch having the first A line length adjusting device is disclosed, characterized in that it includes a coupling member that couples a fixed and a rotating housing to selectively engage with either a gear tooth type or a second gear tooth type.

[0005] Korean Patent No. 1147681 (published on May 22, 2012) discloses a line length adjusting device comprising a fixed housing, a rotating housing that is relatively rotatably coupled to the fixed housing, a winding drum inserted into the interior of the fixed housing and the rotating housing, a coupling unit that couples the fixed housing and the rotating housing, and a free-curve spring coupled to the upper portion of the rotating housing, wherein a first tooth shape and a second tooth shape are formed on one side of one of the fixed housing and the rotating housing, and a latch that selectively engages and interacts with the second tooth shape or the first tooth shape is provided on the other housing where the first tooth shape and the second tooth shape are not formed, and housing coupling teeth and drum coupling teeth that interlock with each other and operate are provided in a circular shape in the lower region of the rotating housing and the upper region of the winding drum, and Korean Patent No. 1107372 (published on January 19, 2012) (Public notice) discloses a line length adjustment device including a fixed housing having a drum rotation axis formed in a central region, a rotating housing coupled to the fixed housing so as to be relatively rotatable, a winding drum inserted into the interior of the fixed housing and the rotating housing and having a winding portion for winding or unwinding a line, and a coupling unit guide shaft that couples the fixed housing and the rotating housing and guides an up / down movement of the rotating housing for winding or unwinding a line.

[0006] However, such strap length adjustment devices are typically provided as integral parts of the shoe during the manufacturing process of sneakers and other footwear. Therefore, shoes manufactured without strap length adjustment devices, such as ready-made sneakers manufactured and sold with shoelaces as standard, face the limitation that such strap length adjustment devices cannot be applied retroactively.

[0007] The present invention has been devised to solve the above problems, and the purpose of the present invention is to provide a detachable shoelace tightening device utilizing a shoelace loop, which has a length adjustment means attachment / detachment portion formed with a hooking groove that can be tightened and released according to the winding and unwinding of the length adjustment means by fitting a shoelace loop through a shoelace hole on one side of the length adjustment means, so that the user can easily attach the desired string length adjustment means to the user's shoes, etc., and easily loosen or tighten the shoelaces.

[0008] Another object of the present invention is to provide a detachable shoelace tightening device utilizing a shoelace loop, which has a length adjustment means attachment / detachment portion formed with two hook grooves that can be tightened and released according to the winding and unwinding of the length adjustment means by fitting two shoelace loops through two adjacent shoelace holes on one side of the length adjustment means, thereby easily fixing and attaching the entire cylindrical length adjustment means in a form that is stably and closely attached to the shoe, thereby enabling the shoelace to be more stably and easily loosened or tightened.

[0009] Another object of the present invention is to provide a detachable shoelace tightening device utilizing a shoelace loop, which is easy to attach and detach and can loosen or tighten a shoelace while the length adjustment means is kept in close contact with the shoe more stably, by further providing a cylindrical detachable housing to the length adjustment means, and having a separate shoelace loop branching portion so that each of the two rows of shoelace loops, which are fitted and fixed to two opposing hook grooves, passes from the upper side to the lower side of the upper through two adjacent shoelace holes, and then branches into two first and second rows, with the first row being interconnected and the other two second rows being separated and connected to the winding drum.

[0010] In order to achieve the above object, a detachable shoelace tightening device utilizing a shoelace loop according to one embodiment of the present invention comprises: a shoelace connected through a plurality of shoelace holes or shoelace loops formed in a shoe; and a length adjusting means for tightening the shoelace by rotation, wherein the length adjusting means is characterized in that it is fixed to a shoelace loop through the shoelace holes or shoelace loops.

[0011] In addition, the length adjustment means further includes a length adjustment means detachable portion to which the shoelace loop is fixed, and the length adjustment means detachable portion is characterized in that it has a hook groove portion to which the shoelace loop is fitted and fixed.

[0012] In addition, the above-mentioned hook-and-loop portion is characterized in that two are formed facing each other on the upper side of the length adjustment means attachment / detachment portion, and two shoelace loops passing through two adjacent shoelace holes are fitted and fixed facing each other.

[0013] In addition, the length adjustment means further includes a detachable housing having an open cylindrical receiving portion inside, and the detachable portion of the length adjustment means is formed to protrude from one side of the detachable housing.

[0014] In addition, the length adjustment means is characterized by comprising a fixed housing having a through-hole that is fixedly mounted and secured in the receiving portion of the detachable housing and extends vertically; a winding drum having a winding portion disposed within the through-hole and through which a shoelace is wound or unwound; and a rotating housing that is rotatable relative to the fixed housing and is axially connected to the winding drum so as to be movable up and down about the winding drum, thereby rotating the winding drum.

[0015] In addition, the above-mentioned adjusting means attachment / detachment portion is characterized in that it is located between two adjacent shoelace holes through which two shoelace loops pass when the length adjusting means is attached.

[0016] In addition, the detachable housing is characterized by including a shoelace loop branch portion formed on the lower side thereof, in which two rows of shoelace loops, each of which is fitted and fixed to two opposing hook grooves, pass through the upper through the two adjacent shoelace holes, and then branch into two first and second rows, respectively, such that the first rows are interconnected and the other two second rows are separated and connected to the winding drum; and a shoelace passage hole formed in the central portion adjacent to the shoelace loop branch portion, through which the two second rows branched from the shoelace loop branch portion pass and are connected to the winding drum.

[0017] In addition, the shoelace loop branch portion is characterized in that it comprises two shoelace loop passage holes facing each other on both sides so that two shoelace loops that pass through the upper through two adjacent shoelace holes pass oppositely and branch off into first and second rows; and a shoelace loop connecting groove formed between the two opposing shoelace loop passage holes so that the two first rows that are branched off are mutually connected, and the two second rows are characterized in that they are separated through the two shoelace loop passage holes and connected to the winding portion of the winding drum through the shoelace passage holes.

[0018] In addition, the second line, which is two lines connected to the winding drum, is characterized in that it is separated from the winding unit in an opposite manner and is wound or unwound.

[0019] According to the present invention, a detachable shoelace tightening device utilizing a shoelace loop configured as described above is provided with a length adjustment means attachment / detachment portion in which a hooking groove is formed that can be tightened and released according to the winding and unwinding of a length adjustment means by inserting and fixing a shoelace loop through a shoelace hole, a shoelace ring, or a sulphur, so that the user can easily attach a desired length adjustment means to the user's shoes, etc., and easily loosen or tighten the shoelaces.

[0020] In addition, by providing a length adjustment means attachment / detachment portion having two hook-and-loop sections that can be tightened and released according to the winding and unwinding of the length adjustment means by fixing two shoelace loops through two adjacent shoelace holes on one side of the length adjustment means, the entire cylindrical length adjustment means is easily fixed and attached in a form that is stably attached to the shoe, so that the shoelaces can be more stably and easily loosened or tightened.

[0021] In addition, the length adjustment means further includes a cylindrical detachable housing so that each of the two rows of shoelace loops, which are fitted and fixed to two opposing hook grooves, passes from the upper side to the lower side of the upper through two adjacent shoelace holes, and then branches into two first and second rows, with the first row being interconnected and the other two second rows being separated and connected to the winding drum, thereby providing a separate shoelace loop branch portion, thereby providing an advantage in that the shoelaces can be loosened or tightened while the length adjustment means is in close contact with the shoe more stably.

[0022] FIG. 1 is a drawing illustrating a state in which a detachable shoelace tightening device utilizing a shoelace loop according to one embodiment of the present invention is attached to a shoe.

[0023] FIG. 2 is an exploded perspective view of a length adjustment means of a detachable shoelace tightening device utilizing a shoelace loop according to one embodiment of the present invention.

[0024] FIGS. 3A and 3B are top and back perspective views of a detachable housing of a length adjustment means of a detachable shoelace tightening device utilizing a shoelace loop according to one embodiment of the present invention.

[0025] FIGS. 4a and 4b are top and back perspective views showing the mounting state of a length adjustment means of a detachable shoelace tightening device utilizing a shoelace loop according to one embodiment of the present invention.

[0026] The present invention may be embodied in various forms without departing from its technical spirit or essential characteristics. Therefore, the embodiments of the present invention are merely illustrative in all respects and should not be construed as limiting.

[0027] The terms first, second, etc. may be used to describe various components, but the components should not be limited by the terms.

[0028] The above terms are used solely to distinguish one component from another. For example, without departing from the scope of the present invention, a first component could be referred to as a second component, and similarly, a second component could also be referred to as a first component.

[0029] When it is said that a component is "connected" or "connected" to another component, it should be understood that it may be directly connected or connected to that other component, but there may also be other components in between.

[0030] On the other hand, when it is said that a component is "directly connected" or "directly connected" to another component, it should be understood that there are no other components in between.

[0031] The terminology used in this application is solely for the purpose of describing specific embodiments and is not intended to limit the present invention. Singular expressions include plural expressions unless the context clearly dictates otherwise.

[0032] In this application, it should be understood that terms such as “include,” “comprising,” or “having” are intended to specify the presence of a feature, number, step, operation, component, part, or combination thereof described in the specification, but do not preclude the possibility of the presence or addition of one or more other features, numbers, steps, operations, components, parts, or combinations thereof.

[0033] Unless otherwise defined, all terms used herein, including technical or scientific terms, have the same meaning as commonly understood by one of ordinary skill in the art to which the present invention belongs.

[0034] Terms defined in commonly used dictionaries should be interpreted to have a meaning consistent with their meaning in the context of the relevant technology, and will not be interpreted in an idealized or overly formal sense unless expressly defined in this application.

[0035] Hereinafter, the most preferred embodiment of the present invention will be described in detail with reference to the attached drawings so that a person having ordinary skill in the art to which the present invention pertains can easily carry out the present invention.

[0036]

[0037] FIG. 1 is a drawing illustrating a state in which a detachable shoelace tightening device utilizing a shoelace loop according to one embodiment of the present invention is attached to a shoe, FIG. 2 is an exploded perspective view of a length adjustment means of a detachable shoelace tightening device utilizing a shoelace loop according to one embodiment of the present invention, FIGS. 3a and 3b are top and back perspective views of a detachable housing of a length adjustment means of a detachable shoelace tightening device utilizing a shoelace loop according to one embodiment of the present invention, and FIGS. 4a and 4b are top and back perspective views illustrating a state in which a length adjustment means of a detachable shoelace tightening device utilizing a shoelace loop according to one embodiment of the present invention is mounted.

[0038] A detachable shoelace tightening device (100) utilizing a shoelace loop according to one embodiment of the present invention, as illustrated in FIG. 1 and the like, is provided with a shoelace hole (12) or a shoelace loop (not shown) for tying shoelaces in a ready-made sneaker or the like, and has a length adjustment means (30) that is detachably coupled to the shoelace hole (12) (or shoelace loop) using a shoelace wire, so that the shoelace can be easily loosened or tightened. The device comprises a length adjustment means (30) that is a shoelace that is connected via a plurality of shoelace holes (12) formed in a shoe (10), and a length adjustment means detachable part (31) that is provided with a hooking groove (311, 312) into which a shoelace loop (21) is fitted and fixed via the shoelace hole (12) (or shoelace loop).

[0039] Here, as shown, it is preferable that the two hook-and-loop portions (311, 312) are formed oppositely on the upper side of the length adjustment means attachment / detachment portion (31) so that two shoelace loops (21; see Fig. 4a) passing through two shoelace holes (12) are fitted and fixed oppositely.

[0040] In the illustrated example, the length adjustment means (30) is shown as a structure in which it is detachably connected to a shoelace hole (12) (also a shoelace loop), but it is of course also possible to attach and detach it by connecting it to a lace loop (14) formed on the shoe's sulcus (11).

[0041] For reference, the wire described below may be a wire added to a detachable shoelace tightening device (100) utilizing a shoelace loop, which is a shoelace loop. However, the scope of the present invention need not be limited to one type of wire, and although it is generally referred to as a wire in the claims of the present invention, it is obvious that it can encompass all types of wires and materials. That is, the wire (20), which is a shoelace, may be formed of any of a wide variety of polymer or metal materials, or combinations thereof, that exhibit sufficient axial strength and bendability for the present application. For example, any of a wide variety of solid core wires, solid core polymers, or multifilament wires or polymers, which may be woven, braided, twisted, or otherwise configured, may be used. The solid or multifilament metal core may be provided with a polymer coating, such as PTFE, known in the art, to reduce friction.

[0042] Here, the example shown shows an example in which the tightening device (100) is provided on a shoe, but it can be applied to various tightening devices that can be used on items such as clothing or accessories, sports equipment, etc. that are worn by tightening wires or strings, such as hats, belts, gloves, bags, water skis, snowboarding, etc.

[0043]

[0044] As shown in Fig. 1, in the above shoe (10), a sulphur (11) is formed in the upper and lower parts of the center, and a plurality of shoelace holes (12) are formed facing each other on the upper left and right sides of the sulphur (11), and wires (20) are connected in a cross shape.

[0045] In addition, the sulfur (11) is formed with one or more lace loops (14) that are connected by wires (20) that are connected in a cross-like manner to a plurality of shoelace holes (12) that are spaced apart from each other vertically and facing each other. The spacing between the shoelace holes (12) that correspond to each other may be the same, or the spacing may increase from the lower side of the sulfur (11) (the part where the upper and sulfur are connected) to the upper side.

[0046]

[0047] As shown in Fig. 1, the length adjustment means (30) has a length adjustment means detachable part (31) in which the wire (20) is wound and connected inside and performs the function of tightening the wire (20) by rotation, and at the same time, a hooking groove (311, 312) is formed on one side to which a shoelace loop (21) passing through two shoelace holes (12) is fitted and fixed, so that the length adjustment means (30) can be stably fixed and supported by using the tightening of the shoelace loop (21).

[0048] Here, as shown in FIG. 2, etc., it is preferable that the length adjustment means detachable part (31) having the catch grooves (311, 312) formed protrude in a roughly square shape on one side of the detachable housing (32) of the length adjustment means (30) having a roughly cylindrical shape, and a pair of catch grooves (311, 312) are formed facing each other on the upper side thereof.

[0049] At this time, as shown in Fig. 4a, the length adjustment means detachable part (31) formed with a pair of opposing hook grooves (311, 312) facing upward is preferably located between two shoelace holes (12) through which two shoelace loops pass (upper side of the shoe upper (13)) when attaching the length adjustment means (30) to the shoe.

[0050] To explain this in more detail, as shown in FIG. 2, the length adjustment means (30) is configured to include a detachable housing (32) in which an adjustment means detachable part (31) is formed, a fixed housing (33), a winding drum (34), and a rotating housing (35).

[0051] Here, there is no limitation on the type of length adjustment means according to the present invention, and the three components mentioned above are essentially included in various length adjustment means. In the case of the present invention, there is no limitation on the type of length adjustment means, and it should be understood that any length adjustment device that includes the essential components is not limited to any length adjustment means.

[0052] More specifically, the length adjusting means (30), as illustrated in FIG. 2, is configured to include a detachable housing (32) having an adjusting means attachable / detachable portion (31) formed on one side and a cylindrical receiving portion (32-1) with an open upper portion therein, a fixed housing (33) that is fixedly seated in the receiving portion (32-1) and has a through-hole (331) that penetrates vertically, a winding drum (34) that is disposed in the through-hole (331) and has a winding portion (34-1) through which a wire (20) is wound or unwound, and a rotating housing (35) that is rotatable relative to the fixed housing (33) and is axially movably coupled to the winding drum (34) to rotate the winding drum (34).

[0053] The detachable housing (32) is approximately cylindrical, and has a cylindrical receiving portion (32-1) with an open upper portion formed therein so that a fixed housing (33), a winding drum (34), and a rotating housing (35) can be accommodated therein, thereby providing a space in which a length adjustment means (30) can operate, and a detachable portion (31) of the length adjustment means is formed on one side so that two shoelace loops (21; see FIG. 4a) passing through two shoelace holes (12) are fitted and fixed in an opposite manner through a pair of opposing hook grooves (311, 312), thereby enabling the length adjustment means (30) to be fixed to a shoe.

[0054] In addition, the detachable housing (32) has a shoelace loop branch portion (321) formed so that each of the two rows of shoelace loops (21; see FIG. 4a) fitted into a pair of the hooking grooves (311, 312) on the lower side thereof passes from the upper side to the lower side of the upper (13) through the two adjacent shoelace holes (12), and then branches into two first and second rows (211, 212), so that the first row (211) is interconnected and the other two second rows (212) are separated and connected to the winding drum (34), and the central portion adjacent to the shoelace loop branch portion (321) is formed with a shoelace passage through which two second rows (212) branched from the shoelace loop branch portion (321) pass and are connected to the winding drum (34). A hole (322) is further formed.

[0055] As shown in FIGS. 3b and 4b, the above shoelace loop branch portion (321) has a cross-section that is approximately in the shape of the letter "∪", and two shoelace loops (21) that pass through the two adjacent shoelace holes (12) from the upper side to the lower side of the upper (13) are formed by two shoelace loop passage holes (321-1) facing each other on both sides so that they pass through and branch into two strings (211, 212), and between the two shoelace loop passage holes (321-1), a shoelace loop connecting groove (321-2) is formed in the shape of a groove so that the first string (211) in the two branched first and second strings (211, 212) is mutually connected and fixed, so that the two separated second strings (212) pass through the two shoelace loop passage holes (321-1) respectively. It is connected to the winding drum (34) via the shoelace passage hole (322).

[0056]

[0057] As shown in Fig. 2, the above fixed housing (33) has a penetration portion (331) that penetrates upward and downward in a roughly cylindrical shape, and is designed to be seated within the receiving portion (32-1) of the detachable housing (32).

[0058] The above-described fixed housing (33) is formed with a sawtooth shape (not shown in the drawing) that is processed to allow only one-way rotation of the rotating housing (35) when engaged with a latch (not shown) of the rotating housing (35) described later. Since this interlocking structure of the fixed housing and the rotating housing is a widely known technology, a detailed description thereof will be omitted.

[0059]

[0060] As shown in Fig. 2, the above-mentioned winding drum (34) has a winding portion (34-1) that is arranged in the penetrating portion (331) of the fixed housing (33) when the fixed housing (33) is seated in the receiving portion (32-1) of the detachable housing (32) and through which the wire (20) is wound or unwound.

[0061] That is, the second string (212; see Fig. 4b), which is two strings separated and passed through two shoelace loop passage holes (321-1) in the above-mentioned winding section (34-1), passes through the shoelace passage hole (322) and is then separated as two strings facing each other in the above-mentioned winding section and is wound or unwound.

[0062]

[0063] The above-mentioned rotating housing (35) serves as a handle when winding the wire, and is rotatably coupled to the fixed housing (33) and axially movable upward or downward.

[0064] That is, the above-mentioned rotary housing (35) is rotatable relative to the fixed housing (33), and is coupled to the winding drum (34) so ​​as to be axially movable up and down, thereby rotating the winding drum (34). Since the structure of this rotary housing is also a widely known technology, further explanation will be omitted.

[0065]

[0066] In this way, by providing a length adjustment means detachable portion (31) in which a hooking groove (311, 312) is formed that can be tightened and released according to the winding and unwinding of the length adjustment means (30) by fitting and fixing the ends of two shoelace loops (21) through two adjacent shoelace holes on one side of the length adjustment means (30), the entire cylindrical length adjustment means (30) is easily fixedly attached in a form that is stably and closely attached to the shoe (10), so that the shoelace can be stably and easily loosened or tightened.

[0067]

[0068] Although the embodiments of the present invention have been described in detail above, this is an embodiment described so that a person having ordinary knowledge in the technical field to which the present invention pertains can easily practice the present invention, and therefore the technical idea of ​​the present invention should not be interpreted as being limited by the description of the embodiments.

[0069] The present invention relates to a detachable shoelace tightening device utilizing a shoelace loop, and can be widely used by applying it to a tightening device that can be used in a variety of items such as clothing or accessories, sports equipment, etc. that are worn by tightening wires or laces, such as not only shoes, but also hats, belts, gloves, bags, water skis, snowboarding, etc.

Claims

1. Shoelaces connected through multiple shoelace holes or shoelace loops formed in the shoe; and The shoelace is wound and connected inside, and includes a length adjusting means that can tighten the shoelace by rotation. The above length adjustment means is, A detachable shoelace tightening device utilizing a shoelace loop, characterized in that the shoelace loop is secured via a shoelace eyelet or shoelace loop.

2. In paragraph 1, The above length adjustment means is, The shoelace loop further includes a detachable length adjustment means for fixing the shoelace loop. The above length adjustment means detachable part is, A detachable shoelace tightening device utilizing a shoelace loop, characterized in that a hooking groove is provided for fixing the shoelace loop.

3. In paragraph 2, The above-mentioned hanging groove is, A detachable shoelace tightening device utilizing shoelace loops, characterized in that two shoelace loops are formed oppositely on the upper side of the above-mentioned length adjustment means attachment / detachment portion and are inserted and fixed oppositely through two adjacent shoelace holes.

4. In paragraph 3, The above length adjusting means further includes a detachable housing having a cylindrical receiving portion with an open upper portion therein, A detachable shoelace tightening device utilizing a shoelace loop, characterized in that the detachable portion of the length adjustment means is formed to protrude on one side of the detachable housing.

5. In paragraph 4, The above length adjustment means is, A fixed housing having a penetration portion that penetrates upward and downward and is fixedly mounted in the receiving portion of the detachable housing; A winding drum having a winding portion arranged within the above-mentioned penetration portion to wind or unwind a shoelace; and A detachable shoelace tightening device utilizing a shoelace loop, characterized in that it comprises a rotating housing that is rotatable relative to the fixed housing and is axially movably connected to the winding drum to rotate the winding drum.

6. In paragraph 3 or 4, A detachable shoelace tightening device utilizing a shoelace loop, characterized in that the above-mentioned adjusting means attachment / detachment portion is located between two adjacent shoelace holes through which two shoelace loops pass when the length adjusting means is attached.

7. In paragraph 5, The above detachable housing is, A shoelace loop branch portion formed on the lower side thereof, each of two rows of shoelace loops fitted into two opposing hook grooves, passes through the upper through the two adjacent shoelace holes, and then branches into two first and second rows, so that the first row is interconnected and the other two second rows are separated and connected to the winding drum; and A detachable shoelace tightening device utilizing a shoelace loop, characterized in that it comprises a shoelace passage hole formed in a central portion adjacent to the shoelace loop branch portion and through which two second strings branched from the shoelace loop branch portion pass and are connected to the winding drum.

8. In paragraph 7, The above shoelace loop branch, Two shoelace loop passage holes opposite each other so that two shoelace loops pass through the upper through two adjacent shoelace holes and branch off into first and second rows; and The two first rows formed between the two opposing shoelace loop passage holes and branched out are formed by including shoelace loop connecting grooves for interconnecting each other. A detachable shoelace tightening device utilizing a shoelace loop, characterized in that the two second lines are each separated through the two shoelace loop passage holes and connected to the winding section of the winding drum through the shoelace passage holes.

9. In paragraph 8, A detachable shoelace tightening device utilizing a shoelace loop, characterized in that the second string, which is two strings connected to the above-mentioned winding drum, is separated from the winding unit in an opposite manner and wound or unwound.

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