Shoelace loosening prevention device

Abstract

A shoelace loosening prevention device 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, and a rear end cut-portion, sides that have fixed pressing-protrusions formed inside thereof, respectively, and a pressing member accommodation section and a feeding member accommodation section, a pressing member accommodated in the pressing member accommodation section, having a guide protrusion at a center of a bottom thereof, and having moving pressing-protrusions on both sides thereof, an elastic member having a first end accommodated in the elastic member accommodation section, a feeding member accommodated in the feeding member accommodation section, coupled to the pressing member, and forming a pair of left and right shoelace drawing-in holes, and sides coupled to a front end of the casing member and having shoelace drawing-out holes, respectively.

1 . A shoelace loosening prevention device, the device comprising:
 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.   
     
     
         2 . The shoelace loosening prevention device of  claim 1 , wherein the feeding member includes a grip having a pressing member coupling portion formed at a front end thereof and coupled to the feeding member coupling portion. 
     
     
         3 . The shoelace loosening prevention device of  claim 2 , wherein the casing member has an additional guide hole formed at the cover part and corresponding to the guide hole of the bottom,
 the pressing member has an additional guide protrusion insertion hole that is a coupling groove formed in the top, and   the feeding member has 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.   
     
     
         4 . The shoelace loosening prevention device of  claim 1 , further comprising 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. 
     
     
         5 . The shoelace loosening prevention device of  claim 4 , wherein the drawing-out member includes 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 is coupled at a predetermined depth to the aglet finishing member coupling portion by a step formed between the body and the aglet finishing member.   
     
     
         6 . The shoelace loosening prevention device of  claim 4 , wherein the drawing-out member has an aglet finishing member coupling portion horizontally formed through the rear part from the front surface and has 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 is coupled to a first end the aglet finishing member, so the drawing-out member coupling portion is 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.   
     
     
         7 . The shoelace loosening prevention device of  claim 4 , wherein an additional magnet member and a portion of the elastic member are sequentially inserted in the rear part of the drawing-out member, and
 the aglet finish member is 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 is maintained in a coupled state with the magnet member by a magnetic force without direct contact.