Patent Publication Number: US-2023140509-A1

Title: Shoelace loosening prevention device

Description:
TECHNICAL FIELD 
     The present disclosure relates to a shoelace loosening prevention device and, more particularly, to a shoelace loosening prevention device that can prevent a shoelace fastened to a shoe from loosening by conveniently fixing the shoelace even without tying or loosening a knot of the shoelace. 
     BACKGROUND ART 
     Recently, shoelaces are generally used as one of instruments for tightening shoes, such as various kinds of sports shoes, to fit to the feet of a user. Such shoelaces thread and fasten several holes arranged at the instep and ankle parts of a shoe and the remaining portions are fastened and knotted at the ends, thereby finishing fastening. Accordingly, there is inconvenience that a user has to tie or untie a knot on a shoe when fastening or unfastening a shoelace to a shoe. 
     Further, since most of common shoelaces are made of synthetic resin threads, they slide on each other. Accordingly, when a user does intense exercises or wears shoes for a long time with shoelaces tied, the shoelaces are unfastened or loosened, which is bad for aesthetic appearance. Further, when a shoelace loosened down comes in contact with a floor, the shoelace is contaminated, or when a user steps on a loosened shoelace, the user may fall down and a safety accident may occur. 
     In order to solve these problems, a “device for tightening a shoelace” has been developed and disclosed in Korean Utility Model No. w0-0440027 and Korean Patent No. 10-0904132. 
     Such devices for tightening a shoelace are configured such that a space is secured between a moving saw tooth part and a fixed tooth part when a pressing rod or a protruding rod is pressed, and the moving saw tooth part and the fixed tooth part are engaged with each other by elasticity of a spring or an elastic bar, which is an elastic member, when the pressure is removed after a shoelace is moved to an appropriate position to be fixed inside, thereby being able to simply fix the shoelace and prevent the shoelace from loosening even without fixing the shoelace and making a knot. 
     However, first, these inventions have a problem that pressure should be horizontally applied to form a gap between the moving saw tooth part and the fixed tooth part when applying pressure to secure a space between the moving saw tooth part and the fixed tooth part, but, the pressing rod or the protruding rod that is supposed to be held by one finger is formed over the moving saw part, so when the pressing rod or the protruding rod is pressed by a finger, pressure is not accurately horizontally applied and applied at an angle. Accordingly, a large force is required for applying pressure, so this work is not only difficult, but overworks a finger. 
     Further, second, these inventions have a problem that since shoelace holes of the flat-type devices for tightening a shoelace are arranged on sides of the front part, when a user puts on a shoe with the shoelace inserted and fixed inside, the rear of the devices is lifted perpendicularly to the instep part of the shoe due to tension that is applied to the shoelace, which is bad for the aesthetic appearance. Further, since the rear is lifted and protrudes, the devices and the shoelace coming out of the holes get in the way, which is inconvenient and causes a pain by applying pressure to a specific part. 
     Further, third, these inventions have a problem that when the remaining part of a shoelace fastened to a shoe is long, the remaining part should be inserted in the device and the part of the shoelace protruding out of the holes should be knotted or fitted in the space inside the shoe, that is, it is inconvenient to finish the end of the shoelace. 
     DISCLOSURE 
     Technical Problem 
     Accordingly, in order to solve the problems described above, an objective of the present disclosure is to provide a shoelace loosening prevention device having a structure that can easily horizontally apply pressure for forming a gap between a moving saw tooth part and a fixed saw tooth part when applying pressure to secure a space between the moving saw tooth part and the fixed saw tooth part. 
     In order to solve the problems described above, another objective of the present disclosure is to provide a shoelace loosening prevention device that can be in close contact with the instep part of a shoe without being lifted even if tension is applied to a shoelace when a user puts on a shoe with the shoelace is inserted and fixed inside. 
     In order to solve the problems described above, another objective of the present disclosure is to provide a shoelace loosening prevention device that can insert a remaining part therein and can easily fix and finish the end of a shoelace that protrude out of a hole when the remaining part of the shoelace fastened to a shoe is long. 
     Technical Solution 
     In order to achieve the objectives, a shoelace loosening prevention device according to the present disclosure includes a casing member including: a cover part that has a front end cut-portion and a rear end cut-portion; a bottom that has a drawing-out member fixing portion, a guide hole that is an oblong hole formed in a front-rear longitudinal direction, and a rear end cut-portion that is a cut groove corresponding to a shape of the rear end cut-portion of the cover part, which are sequentially formed with predetermined gaps from a front end to a rear end; sides that are disposed in a pair to connect sides of the cover part and the bottom to each other, respectively, and have two fixed pressing-protrusions formed inside thereof, respectively, to face an inside of the casing member and face each other, and formed such that a gap therebetween decreases from a front end to a rear end; and rear parts that are formed in a pair and spaced apart from each other by cutting a center portions to connect rear ends of the cover part and the bottom to each other, and having a pressing member accommodation section at the front end thereof and a feeding member accommodation section at the rear end thereof, a pressing member accommodated in the pressing member accommodation section to be able to reciprocated forward and backward, and having a guide protrusion that is inserted in the guide hole and formed at a center of a bottom thereof, a feeding member coupling portion formed at a front end thereof, an elastic member accommodation section formed at a rear end thereof, and moving pressing-protrusions that have shapes that can be engaged with the fixed pressing-protrusions and are formed on a pair of both sides, respectively, an elastic member having a first end accommodated in the elastic member accommodation section, a feeding member horizontally coupled to the pressing member, accommodated in the feeding member accommodation section to be able to feed the pressing member forward and backward, and forming a pair of left and right shoelace drawing-in holes at a lower portion of the rear end of the casing member when coupled to the casing member, and a drawing-out member coupled to the front end of the casing member and having a top, a bottom that is formed in a shape corresponding to the top and has a casing coupling portion formed at a position of a lower portion thereof and coupled to the drawing-out member fixing portion, sides that are disposed in a pair to connect sides of the top and the bottom to each other, respectively, and have shoelace drawing-out holes at portions thereof, respectively, through which a shoelace inserted through the shoelace drawing-in holes is drawn out from the inside, and a rear part that has an elastic member accommodation section formed at a first end thereof and supporting a second end of the elastic member. 
     The feeding member may include a grip having a pressing member coupling portion formed at a front end thereof and coupled to the feeding member coupling portion. 
     The casing member may have an additional guide hole formed at the cover part and corresponding to the guide hole of the bottom, the pressing member may have an additional guide protrusion insertion hole that is a coupling groove formed in the top, and the feeding member may have an additional top coupled to an upper portion of the grip and an additional guide protrusion protruding downward from a front end of the top and sequentially inserted in the additional guide hole and the guide protrusion insertion hole. 
     The shoelace loosening prevention device for achieve the objectives according to the present disclosure may further include a body having a pair of aglet insertion grooves formed with a predetermined depth from a first end to a second end and an aglet finishing member coupled to a first end of the body and having a drawing-out coupling portion partially detachably coupled to a front end of the drawing-out member. 
     The drawing-out member may include a top with a cut front end, a bottom, sides with cut front ends, an aglet finishing member coupling portion that is a coupling groove formed horizontally with a predetermined depth in a portion of a recessed front surface, and a rear part, and the aglet finishing member may be coupled at a predetermined depth to the aglet finishing member coupling portion by a step formed between the body and the aglet finishing member. 
     The drawing-out member may have an aglet finishing member coupling portion horizontally formed through the rear part from the front surface and may have an additional magnet member inserted in the rear part, and a drawing-out member coupling portion made of a metal member that is attached to the magnet member may be coupled to a first end the aglet finishing member, so the drawing-out member coupling portion may be inserted in the magnet member through the aglet finishing member coupling portion, thereby being maintained in a coupled state with the magnet member by a magnetic force. 
     An additional magnet member and a portion of the elastic member may be sequentially inserted in the rear part of the drawing-out member, and the aglet finish member may be made of a metal material that is attached to a magnet at the first end of the body, and the drawing-out member coupling portion corresponding to a shape of a front end of the drawing-out member may be maintained in a coupled state with the magnet member by a magnetic force without direct contact. 
     Advantageous Effects 
     Since the shoelace loosening prevention device according to the first embodiment of the present disclosure has a structure in which the grip  310  of the feeding member is disposed horizontally, there is an advantageous effect that horizontal pressing is easy and, in the process of pressing for securing gap spaces between the moving pressing-protrusions and the fixed pressing-protrusions to adjust the positions of the shoelace accommodated inside, and it is easy to secure gap spaces for adjusting the position of the shoelace between the moving pressing-protrusions and the fixed pressing-protrusions. 
     Further, according to the shoelace loosening prevention device of the present disclosure, since the shoelace drawing-in holes are open downward at the rear end, even though tension is applied to the shoelace when a user wears a shoe with the shoelace accommodated inside and tightened and fixed, a supporting force acts on a wide area of the bottom of the rear end of the shoelace loosening prevention device, so there is an advantageous effect that the shoelace loosening prevention device can keep in close contact with the instep part of the shoe without the front surface thereof lifted. 
     Further, according to the shoelace loosening prevention device of the present disclosure, there is an advantageous effect that when the remaining portion of a shoelace fastened to a shoe is long, it is possible to accommodate the remaining portion in the shoelace loosening prevention device and it is possible to easily fix and finish aglets at the ends of the shoelace protruding out of the drawing-out holes by accommodating the aglets in the aglet insertion grooves of the aglet finishing member. 
    
    
     
       DESCRIPTION OF DRAWINGS 
         FIGS.  1  and  2    are assembled perspective views of a shoelace loosening prevention device according to a first embodiment of the present disclosure, respectively. 
         FIGS.  3  and  4    are exploded perspective views of the shoelace loosening prevention device according to the first embodiment of the present disclosure, respectively. 
         FIGS.  5  and  6    are state views showing a state in which a pressing member of the shoelace loosening prevention device according to the first embodiment of the present disclosure is pressed. 
         FIGS.  7  and  8    are assembled perspective views of a shoelace loosening prevention device according to a second embodiment of the present disclosure, respectively. 
         FIGS.  9  and  10    are exploded perspective views of the shoelace loosening prevention device according to the second embodiment of the present disclosure, respectively. 
         FIG.  11    is an assembled perspective view of a shoelace loosening prevention device according to a third embodiment of the present disclosure. 
         FIGS.  12  and  13    are exploded perspective views of the shoelace loosening prevention device according to the third embodiment of the present disclosure, respectively. 
         FIGS.  14  and  15    are exploded perspective views of a shoelace loosening prevention device according to a fourth embodiment of the present disclosure, respectively. 
         FIGS.  16  and  17    are exploded perspective views of a shoelace loosening prevention device according to a fifth embodiment of the present disclosure, respectively. 
         FIG.  18    is a state view showing the state in which a shoelace fastened to a shoe is fastened to the shoelace loosening prevention device according to the first embodiment of the present disclosure. 
         FIG.  19    is a state view showing the state in which a shoelace fastened to a shoe is actually fastened to the shoelace loosening prevention device according to the first embodiment of the present disclosure. 
     
    
    
     BEST MODE 
     Details related to embodiments of the present disclosure are included in the following detailed description and the accompanying drawings. 
     The advantages and features of the present disclosure, and methods of achieving them will be clear by referring to the exemplary embodiments that will be describe hereafter in detail with reference to the accompanying drawings. However, the present disclosure is not limited to the exemplary embodiments described hereafter and may be implemented in various ways, and the exemplary embodiments are provided to complete the description of the present disclosure and let those skilled in the art completely know the scope of the present disclosure and the present disclosure is defined by claims. 
     Like reference numerals indicate like components throughout the specification. Embodiments of the present disclosure are described herein with reference to ideal assembled perspective views, exploded perspective views, and state views of the present disclosure. 
     Hereafter, several embodiments of a shoelace loosening prevention device according to the present disclosure are described in detail with reference to the accompanying drawings. 
     First, a shoelace loosening prevention device  1  according to a first embodiment of the present disclosure is described in detail with reference to  FIGS.  1  to  6   . 
       FIGS.  1  and  2    are assembled perspective views of a shoelace loosening prevention device according to a first embodiment of the present disclosure, respectively,  FIGS.  3  and  4    are exploded perspective views of the shoelace loosening prevention device according to the first embodiment of the present disclosure, respectively, and  FIGS.  5  and  6    are state views showing a state in which a pressing member of the shoelace loosening prevention device according to the first embodiment of the present disclosure is pressed. 
     A shoelace loosening prevention device  1  according to a first embodiment of the present disclosure includes a casing member  100 , a pressing member  200 , an elastic member  250 , a feeding member  300 , and a drawing-out member  400 . 
     The casing member  100  has a cover part  110 , a bottom  120 , sides  130 , and rear parts  140 , a pressing member accommodation section  150  is formed at the front end of the casing member  100 , and a feeding member accommodation section  160  is formed at the rear end of the casing member  100 . 
     The cover part  110  is formed entirely in a triangular shape, but a front end cut-portion  113  is formed at the front end thereof and a rear end cut-portion  114  that is a cut groove is formed at a portion of the center of the rear end. 
     The bottom  120  is also formed entirely in a triangular shape to correspond to the cover part  110 . A drawing-out member fixing portion  122  that is a through-hole, a guide hole  124  that is an oblong hole formed in the front-rear longitudinal direction, and a rear end cut-portion  126  that is a cut groove corresponding to the shape of the rear end cut-portion  114  of the cover part  110  are sequentially formed with predetermined gaps therebetween from the front end to the rear end. 
     The sides  130  are disposed in a pair at the portions corresponding to two equal sides of the triangular cover part  110  and bottom  120  to connect sides of the cover part  110  and the bottom  120  to each other, respectively. Fixed pressing-protrusions  132  facing the inside of the casing member  100  are formed on the inner sides of the sides  130 , respectively. The two fixed pressing-protrusions  132  facing each other are formed such that the gap therebetween decreases from the front end to the rear end. 
     The rear parts  140  are formed in a pair and spaced apart from each other on the bases of the triangular cover part  110  and bottom  120 , respectively, by cutting the center portions of the bases to connect the rear ends of the cover part  110  and the bottom  120  to each other. 
     Accordingly, the pressing member accommodation section  150  and the feeding member accommodation section  160  connected to each other are formed at the front end and the rear end of the casing member  100 , respectively, by combination of the cover part  110 , the bottom  120 , the sides  130  and the rear parts  140 . 
     Meanwhile, when the feeding member  300  to be described below is coupled, shoelace drawing-in holes  170  are formed at the left and right side in a pair at the lower portion of the rear end of the casing member  100 . 
     The pressing member  200  is formed in a triangular shape having a predetermined thickness and can reciprocate forward and backward in the pressing member accommodation section  150 . To this end, the pressing member  200  has a guide protrusion  214  that is inserted in the guide hole  124  at the center of the bottom, a feeding member coupling portion  215  that is a coupling protrusion at the front end, an elastic member accommodation section  216  that is a supporting groove at the rear end, an elastic member supporting portion  218  that is a protrusion at the center in the elastic member accommodation section  216 , and moving pressing-protrusions  232  that have corresponding shapes and can be engaged with the fixed pressing-protrusion  132  on a pair of both sides. 
     Accordingly, the pressing member  200  is moved forward and backward by forward and backward feeding operation of the feeding member  300  and the elastic member  250  to be described below, so engagement is made with both sides of a shoelace  20  fitted between the fixed pressing-protrusions  132  and the moving pressing-protrusion  232 , whereby the shoelace  200  is fixed or is released by removing the engagement. 
     The elastic member  250  provides elasticity to the pressing member  200 , and in this embodiment, a coil spring is used as the elastic member and is accommodated in the elastic member accommodation section  216  with the elastic member supporting portion  218  inserted therein. As the elastic member, unlike this embodiment, well-known other members having the same function as a coil spring may also be used. 
     The feeding member  300  is coupled to the pressing member  200  horizontally in a straight line and is accommodated in the feeding member accommodation section  160  to be able to feed the pressing member  200  in the front-rear direction. To this end, the feeding member  300  has: a grip having a pressing member coupling portion  315 , which is a coupling groove coupled to the feeding member coupling portion  215 , at the front end thereof, and having a surface that is leveled with the rear parts  140  when the pressing member  200  is pressed; and a top  320  having a surface parallel with the cover part  110  and coupled to the upper portion of the grip  310  to cover the upper portion of the rear end cut-portion  126 . Meanwhile, unlike this embodiment, the top  320  is a configuration that can be omitted, if necessary. 
     The drawing-out member  400  has a top  410 , a bottom  420 , sides  430 , and a rear part  440 , which are entirely formed in a triangular shape having a predetermined thickness, is coupled to the front end of the casing member  100  to support a second end of the elastic member  250  such that the elastic member  250  provides elasticity to the pressing member  200  and ends of the shoelace  20  inserted through the shoelace drawing-in holes  170  are drawn out. 
     The bottom  420  is formed entirely in a triangular shape corresponding to the top  410  formed entirely in a triangular shape and has a casing coupling portion  442 , which is a pair of coupling protrusion coupled to the drawing-out member fixing portion  122 , at a position of the lower portion. 
     The sides  430  are disposed in a pair at the portions corresponding to two equal sides of the triangular top  410  and bottom  220  to connect sides of the top  420  and the bottom  420  to each other, respectively. A shoelace drawing-out hole  433  through which the shoelace  20  inserted through the shoelace drawing-in holes  170  is drawn out from the inside is formed at portions of the sides  430 , respectively. 
     The rear part  440  has an elastic member accommodation section  446 , which is a supporting groove supporting the second end of the elastic member  250 , at the center portion and an elastic member supporting portion  448  that is a protrusion is formed at the center in the elastic member accommodation section  446 . 
     Hereafter, a method of assembling the shoelace loosening preventing device  1  according to the first embodiment of the present disclosure with a shoelace inserted therein is described with reference to  FIGS.  1  to  4   . 
     First, the casing member  100  and the pressing member  200  are combined with each other by inserting the guide protrusion  214  of the pressing member  200  into the guide hole  124  of the casing member  100  through the pressing member accommodation section  150 . In this state, the first end and the second end of the elastic member  250  are inserted into the elastic member accommodation section  216  of the pressing member  200  and the elastic member accommodation section  446  of the drawing-out member  400 , respectively, and then the casing coupling portion  422  of the drawing-out member  400  is inserted into the drawing-out member fixing portion  122 , whereby the drawing-out member  400  and the casing member  100  are combined with each other. Accordingly, the pressing member  200  is guided and moved backward by the guide hole  124  due to elasticity of the elastic member  250 , whereby the moving pressing-protrusion  232  and the fixed pressing-protrusion  132  are engaged with each other. Then, the pressing member coupling portion  315  is coupled to the feeding member coupling portion  215  by inserting the feeding member  300  through the feeding member accommodation section  160 , whereby assembly of the shoelace loosening prevention device  1  is finished. Since the coupling portions are coupling grooves and coupling protrusions, they may be coupled to each other by general forcible fitting or may be replaced with well-known configurations that can be coupled to each other. 
     Meanwhile, the shoelace  20  is supposed to be coupled to the shoelace loosening prevention device  1  according to the first embodiment of the present disclosure in the process of assembling the shoelace loosening prevention device  1 . First, a pair of shoelaces  20  can be coupled to the shoelace loosening prevention device  1  through the following work of inserting the shoelaces  20  into the pressing member accommodation section  150  through the feeding member accommodation section  160  of the casing member  100 , taking out the ends of the shoelaces through the shoelace drawing-out holes  433  from the inside, starting to put sides of the shoelaces  20  close to the two fixed pressing-protrusions  132  formed inside the sides of the casing member  100 , respectively, and then inserting the guide protrusion  214  into the guide hole  124 . 
     Meanwhile, it is possible to couple the shoelaces  20  to the shoelace loosening prevention device  1  in the process of assembling the shoelace loosening prevention device  1 . First, after the process of coupling the drawing-out member  200  to the casing member  100  described above is performed, when a user pushes forward the feeding member coupling portion  215  of the pressing member  200  using a thumb or an index finger, the pressing member  200  is moved and guided forward by the guide hole  124 , whereby the moving pressing-protrusions  232  are disengaged from the fixed pressing-protrusions  132  and gap spaces are formed. Next, a pair of shoelaces  20  is inserted into the pressing member accommodation section  150  from the feeding member accommodation section  160  through a pair of gap spaces, respectively, ends of the shoelaces are taken out through the shoelace drawing-out holes  433  from the inside, the pressure of the finger is removed, and then the pressing member coupling portion  315  is pressed and coupled to the feeding member coupling portion  215  by inserting the feeding member  300  through the feeding member accommodation section  160 , whereby the shoelace loosening prevention device  1  finishes being assembled with the shoelaces  20  accommodated therein. Accordingly, the shoelaces  20  are inserted through the shoelace drawing-in holes  170  of the shoelace loosening prevention device  1  and the ends protrude outside through the shoelaces drawing-out holes  433 . 
     In order to firmly fasten the shoelaces  20  to a shoe and prevent the shoelaces  20  from loosening using the shoelace loosening prevention device  1  with the shoelaces  20  accommodated therein as described above, as shown in  FIGS.  5  and  6   , when a user presses the grip  310  of the feeding member  300  forward in the direction of the dotted-line arrow using a thumb with an index finger and a middle finger of one hand in contact with the sides  430  of the drawing-out member  400 , respectively, the pressing member  200  is moved and guided by the guide hole  125  ( 124 ), whereby the moving pressing-protrusion  232  and the fixed pressing-protrusion  132  are disengaged from each other, and gap spaces are formed. In this state, when the user draws out the shoelace by a predetermined amount by pulling two ends of the shoelace  20  through the shoelace drawing-out holes  433  and then releases the grip  310 , the pressing member  200  is moved and guided backward by the guide hole  124  by the elasticity of the elastic member  250 , and the moving pressing-protrusions  232  are engaged with the fixed pressing-protrusions  132  with the shoelaces  20  therebetween, thereby preventing the shoelace  20  from loosening, as shown in  FIG.  18   . Meanwhile, unlike this embodiment, for convenient gripping in pressing, the drawing-out member  400  may have a shape with a cut front end such that a user can sequentially put an index finger, a middle finger, and a ring finger on the sides  430  of the drawing-out member  400  and the cut front end. 
       FIG.  18    is a state view showing the state in which a shoelace  20  fastened to a shoe is fastened to the shoelace loosening prevention device  1  according to the first embodiment of the present disclosure. Meanwhile, when a user wants to take off a shoe, the user loosens the shoelace  20  by pulling down the shoelace  20  to the lower ends of the shoelace drawing-in holes  170  with the grip  310  pressed and can easily take off the shoe in this state. 
     As described above, since the shoelace loosening prevention device  1  according to the first embodiment of the present disclosure has a structure in which the grip  310  of the feeding member  300  is disposed horizontally in a straight line with the pressing member  200  with respect to the casing member  101 , there is an advantageous effect that horizontal pressing is easy and, in the process of pressing for securing gap spaces between the moving pressing-protrusions  232  and the fixed pressing-protrusions  132  to adjust the position of the shoelace  20  accommodated inside, and it is easy to secure gap spaces between the moving pressing-protrusions  232  and the fixed pressing-protrusions  132  to tighten or loosen the shoelace  20 . 
     Further, according to the shoelace loosening prevention device  1  of the present disclosure, since the shoelace drawing-in holes  170  are open downward at the rear end, even though tension is applied to the shoelace  20  when a user wears a shoe with the shoelace  20  accommodated inside and tightened and fixed, a supporting force acts on a wide area of the bottom of the rear end corresponding to the wide base of the triangular shape of the shoelace loosening prevention device  1 , so there is an advantageous effect that the shoelace loosening prevention device  1  can keep in close contact with the instep part of the shoe without the front surface thereof lifted. 
     Hereafter, a shoelace loosening prevention device  2  according to a second embodiment of the present disclosure is described mainly about the difference from the shoelace loosening prevention device according to the first embodiment of the present disclosure shown in  FIGS.  1  to  6    with respect to  FIGS.  7  to  10   . 
       FIGS.  7  and  8    are assembled perspective views of a shoelace loosening prevention device according to a second embodiment of the present disclosure, respectively, and  FIGS.  9  and  10    are exploded perspective views of the shoelace loosening prevention device according to the second embodiment of the present disclosure, respectively. 
     The shoelace loosening prevention device  2  according to the second embodiment of the present disclosure is modified to be able to finish ends of a shoelace  20  when the shoelace  20  to be fastened to a shoe are long, and is the same as the shoelace loosening prevention device  1  according to the first embodiment of the present disclosure except that the feeding member coupling portion  217  of the pressing member  201  and the pressing member coupling portion  316  of the feeding member  301  are switched as a coupling groove and a coupling protrusion, respectively, unlike the shoelace loosening prevention device  1  according to the first embodiment of the present disclosure, and an aglet finishing member  500  is further coupled to the front end of the drawing-out member  401  of which the shape is changed. 
     The drawing-out member  401  has a top  411  with a cut front end, a triangular bottom  421 , sides  431  with a cut front end, an aglet finishing member coupling portion  436  that is a coupling groove formed horizontally with a predetermined depth in a portion of a recessed front surface, and a rear part  440 , and the aglet finishing member  500  is accommodated and coupled at the front end thereof. 
     The aglet finishing member  500  has a body  510  and a drawing-out member coupling portion  535 . 
     The body  510  is made of a flexible synthetic resin material or a rubber material, is coupled to the drawing-out member  401  with a portion accommodated in the drawing-out member  410 , and has a pair of aglet insertion grooves  522  formed with a predetermined depth from a first end to a second end. 
     The aglet insertion grooves  522  accommodates aglets  22  made of a synthetic resin material or a metal material and formed at ends of the shoelace  20 , thereby making it possible to finish the ends of a long shoelace  20 , as shown in  FIG.  19   .  FIG.  19    is a view showing the state in which shoelaces fastened to a shoe are actually fastened to the shoelace loosening prevention device according to the first embodiment of the present disclosure. 
     The drawing-out member coupling portion  535  is connected to a first end of the body  510  and is coupled at a predetermined depth to the aglet finishing member coupling portion  436  by a step  539  formed between the body  510  and the drawing-out member coupling portion  535 . 
     Accordingly, the shoelace loosening prevention device  2  according to the second embodiment of the present disclosure can further achieve an advantageous effect that when the remaining portion of a shoelace  20  fastened to a shoe is long, it is possible to accommodate the remaining portion in the shoelace loosening prevention device  2  and it is possible to easily fix and finish aglets at the ends of the shoelace  20  protruding out of the shoelace drawing-out holes  453  by accommodating the aglets in the aglet insertion grooves  522  of the aglet finishing member  500 . 
     Hereafter, a shoelace loosening prevention device  3  according to a third embodiment of the present disclosure is described mainly about the difference from the shoelace loosening prevention device according to the first embodiment of the present disclosure shown in  FIGS.  1  to  6    with respect to  FIGS.  11  to  13   . 
       FIG.  11    is an assembled perspective view of a shoelace loosening prevention device according to a third embodiment of the present disclosure and  FIGS.  12  and  13    are exploded perspective views of the shoelace loosening prevention device according to the third embodiment of the present disclosure, respectively. 
     The shoelace loosening prevention device  3  according to the third embodiment of the present disclosure is the same as the shoelace loosening prevention device  1  according to the first embodiment of the present disclosure except that the coupling force and guide convenience between the pressing member  202  and the feeding member  302  are further increased to conveniently pressing the feeding member  302 . 
     That is, the casing member  101  has an additional guide hole  115  formed at the cover part  111  and corresponding to the guide hole  124  of the bottom  120 , the pressing member  202  has an additional guide protrusion insertion hole  219  that is a coupling groove formed in the top, and the feeding member  302  has an additional guide protrusion  325  protruding downward from the front end of the top  321  to be inserted in the additional guide hole  115  and guide protrusion insertion hole  219 . 
     Therefore, the shoelace loosening prevention device  3  according to the third embodiment of the present disclosure can achieve an additional advantageous effect that since the coupling force and guide convenience are further included, the feeding member  302  is more easily and stably moved forward when the grip  310  is pressed. 
     Hereafter, a shoelace loosening prevention device  4  according to a fourth embodiment of the present disclosure is described mainly about the difference from the shoelace loosening prevention device  2  according to the second embodiment of the present disclosure shown in  FIGS.  7  to  10    with respect to  FIGS.  14  and  15   . 
       FIGS.  14  and  15    are exploded perspective views of a shoelace loosening prevention device according to a fourth embodiment of the present disclosure, respectively. 
     The shoelace loosening prevention device  4  according to the fourth embodiment of the present disclosure has the same external appearance as the shoelace loosening prevention device  20  according to the second embodiment of the present disclosure, and is the same as the shoelace loosening prevention device  2  according to the second embodiment of the present disclosure except that the drawing-out member  402  and the aglet finishing member  501  are combined by the magnet force of a magnet member  550  additionally disposed on the rear part  440  of the drawing-out member  402  rather than forcible fitting. 
     That is, the drawing-out member  402  has an aglet finishing member coupling portion  437  horizontally formed through the rear part  440  from the front surface and a ring-shaped magnet member  550  is inserted in the rear part  440 . Further, a drawing-out member coupling portion  536  made of a metal member that is attached to the magnet member  550  is coupled to a first end the aglet finishing member  501  by insert injection, so the drawing-out member coupling portion  536  is inserted in the magnet member  550  through the aglet finishing member coupling portion  437 , thereby being maintained in a coupled state with the magnet member  550  by the magnetic force. In this embodiment, in to insert the drawing-out member coupling portion  536  into the aglet finishing member coupling portion  437 , the elastic member  251  is formed such that the diameter thereof decreases so that the magnet member  550  is inserted therein. 
     Accordingly, the shoelace loosening prevention device  4  according to the fourth embodiment of the present disclosure has an advantageous effect that since the drawing-out member  402  and the aglet finishing member  501  are combined by the magnet force of the magnet member  550  additionally disposed on the rear part  440  of the drawing member  402  rather than combined by forcible fitting, easiness of coupling can be additionally secured. 
     A shoelace loosening prevention device  5  according to a fifth embodiment of the present disclosure, similar to the shoelace loosening prevention device  4  according to the fourth embodiment of the present disclosure, has the same external appearance as the shoelace loosening prevention device  20  according to the second embodiment of the present disclosure, and is the same as the shoelace loosening prevention device  4  according to the fourth embodiment of the present disclosure except that the drawing-out member  403  and the aglet finishing member  501  are combined by the magnetic force of a magnet member  550  additionally disposed on the rear part  440  of the drawing-out member  402  rather than forcible fitting. 
     Hereafter, a shoelace loosening prevention device  5  according to a fifth embodiment of the present disclosure is described mainly about the difference from the shoelace loosening prevention device  4  according to the fourth embodiment of the present disclosure shown in  FIGS.  14  and  15    with respect to  FIGS.  16  and  17   . 
       FIGS.  16  and  17    are exploded perspective views of the shoelace loosening prevention device according to the fifth embodiment of the present disclosure, respectively. 
     The shoelace loosening prevention device  5  according to a fifth embodiment of the present disclosure is also the same as the shoelace loosening prevention device  4  according to the fourth embodiment of the present disclosure in that the drawing-out member  403  and the aglet finishing member  502  are combined by the magnetic force of a magnet member  550  additionally disposed on the rear part  440  of the drawing-out member  403 . However, the aglet finishing member  437  that is a through-hole is omitted at the drawing-out member  404 , unlike the fourth embodiment, and a coin-shaped magnet member  551  and a portion of the elastic member  250  are sequentially inserted in a magnet member accommodation section  449  of the rear part  440 . Further, the aglet finishing member  502  is made of a metal material that is attached to a magnet at a first end of the body  510 , and the drawing-out member coupling portion  537  corresponding to the shape of the front end of the drawing-out member  404  is formed by insert injection and is maintained in a coupled state with the magnet member  551  by a magnetic force without direct contact. 
     Accordingly, the shoelace loosening prevention device  5  according to the fifth embodiment of the present disclosure has an additional advantageous effect that since the aglet finishing member coupling portion  437  is not additionally formed through the drawing-out member  403 , the manufacturing efficiency is more excellent in comparison to the shoelace loosening prevention device  4  according to the fourth embodiment of the present disclosure. 
     Although embodiments of the present disclosure were described above in detail, the spirit of the present disclosure is not limited thereto and the present disclosure may be changed and modified in various ways on the basis of the basic concept without departing from the scope of the present disclosure described in the following claims.