Closure system

Abstract

A closure system includes a fastening article, a fastening device and a lace. The fastening article includes a main frame and at least one guiding portion. The fastening device is disposed at the main frame and includes at least one gear rack including an inner end and an outer end, a gear engaged with the inner end, a knob coupled to the gear and an engaging. The lace passing through the main frame and the guiding portion, and one end of the lace is connected to the outer end. As the knob is rotated in a tensioning direction by a force, the gear is rotated to drive the gear rack, and the lace pulls the guiding portion to move close to the main frame. As the force is removed, the engaging unit prohibits the gear from rotating in a releasing direction to fix a position of the gear rack.

What is claimed is: 
     
         1 . A closure system, comprising:
 a fastening article disposed at a to-be-fastened article and comprising a main frame and at least one guiding portion, wherein the at least one guiding portion is independent from the main frame;   a fastening device disposed at the main frame and comprising:
 at least one gear rack covered by the main frame and comprising an inner end and an outer end; 
 a gear engaged with the inner end of the at least one gear rack; 
 a knob operably coupled to the gear; and 
 an engaging unit located between the gear and the knob; and 
   a lace passing through the main frame and the at least one guiding portion, wherein one end of the lace is connected to the outer end of the at least one gear rack;   wherein as the knob is rotated in a tensioning direction by a force, the gear is rotated to drive the at least one gear rack, and the lace pulls the at least one guiding portion to move close to the main frame; as the force is removed, the engaging unit prohibits the gear from rotating in a releasing direction to fix a position of the at least one gear rack.   
     
     
         2 . The closure system of  claim 1 , wherein the at least one gear rack comprises a plurality of protruding teeth, the gear comprises a plurality of rotating teeth corresponding to the protruding teeth, and each of the protruding teeth and each of the rotating teeth have an inclined-toothed or a helical toothed structure. 
     
     
         3 . The closure system of  claim 1 , wherein the fastening article further comprises a sub-frame, a number of the at least one guiding portion is two, one of the two guiding portions is disposed at one end of the sub-frame, and another one of the two guiding portions is disposed at another end of the sub-frame. 
     
     
         4 . The closure system of  claim 3 , wherein the main frame comprises a placing board, a connecting portion and two holes, the placing board and the connecting portion are connected to form an inverted T shape, the two holes are respectively disposed at two ends of the placing board, and the lace passes through the two holes to connect to the two guiding portions. 
     
     
         5 . The closure system of  claim 4 , wherein a number of the at least one gear rack is two, the main frame further comprises two gear rack grooves disposed at the placing board and spaced apart from each other, and the two gear rack grooves are configured for the two gear racks to respectively insert therein. 
     
     
         6 . The closure system of  claim 1 , wherein a hardness of the at least one gear rack is larger than or equal to 50 D. 
     
     
         7 . The closure system of  claim 1 , wherein the fastening article further comprises a housing assembling with the fastening article, the housing comprises a housing wall and a plurality of housing teeth, the housing teeth are located at the housing wall, and the engaging unit is located within the housing and comprises an elastic pawl corresponding to the housing teeth. 
     
     
         8 . The closure system of  claim 7 , wherein the engaging unit further comprising an engaging disc and a blocking portion, the elastic pawl comprises an arm portion and a toothed portion, the arm portion is extended outward from the engaging disc along a circumference direction, the toothed portion is connected to a distal end of the arm portion, the blocking portion protrudes outward from the engaging disc and is below the arm portion along an axis, and as the elastic pawl is deflected radially inward, the toothed portion corresponds to the blocking portion. 
     
     
         9 . The closure system of  claim 7 , wherein the fastening device further comprises a transmission wheel, the transmission wheel is linked with the knob along an axis and rotatably restricted with the engaging unit, the transmission wheel comprises a plurality of transmission teeth facing toward the gear, the gear further comprises a plurality of coupling teeth for engaging with the transmission teeth, and as the knob is pulled upward along the axis, the transmission wheel is disengaged from the gear. 
     
     
         10 . The closure system of  claim 7 , wherein the engaging unit further comprises a plurality of depressions facing toward the knob, the knob comprises a plurality of driving tabs and a deflecting tab, the driving tabs respectively protrude into the depressions, and the deflecting tab protrudes into a gap between the elastic pawl and the housing teeth; as the knob is rotated in the tensioning direction, the driving tabs drive the engaging unit to rotate the gear in the tensioning direction; as the knob is rotated in the releasing direction, the driving tabs are respectively moved in the depressions, and the deflecting tab pushes the elastic pawl to deflect radially inward, thereby separating the elastic pawl and the housing teeth. 
     
     
         11 . A closure system, comprising:
 a fastening article disposed at a to-be-fastened article and comprising a main frame and at least one guiding portion, wherein a distance is included between the at least one guiding portion and the main frame;   a fastening device disposed at the main frame and comprising:
 at least one gear rack comprising an inner end and an outer end; 
 a gear engaged with the inner end of the at least one gear rack; 
 a knob operably coupled to the gear; and 
 an engaging unit located between the gear and the knob and comprising an elastic pawl; and 
 a housing engaging with the knob and being for accommodating the engaging unit, the housing comprising a plurality of housing teeth surrounding the engaging unit, wherein the elastic pawl is selectively engaged with the housing teeth 
   a lace passing through the main frame and the at least one guiding portion, wherein one end of the lace is connected to the outer end of the at least one gear rack;   wherein as the knob is rotated in a tensioning direction by a force, the elastic pawl separates from the housing teeth to allow the gear to drive the at least one gear rack, and the lace pulls the at least one guiding portion to move close to the main frame; as the force is removed, the elastic pawl is engaged with at least one of the housing teeth, thereby prohibiting the gear from rotating in a releasing direction to fix a position of the at least one gear rack.   
     
     
         12 . The closure system of  claim 11 , wherein the at least one gear rack comprises a plurality of protruding teeth, the gear comprises a plurality of rotating teeth corresponding to the protruding teeth, and each of the protruding teeth and each of the rotating teeth have an inclined-toothed or a helical toothed structure. 
     
     
         13 . The closure system of  claim 11 , wherein the fastening article further comprises a sub-frame, a number of the at least one guiding portion is two, one of the two guiding portions is disposed at one end of the sub-frame, and another one of the two guiding portions is disposed at another end of the sub-frame. 
     
     
         14 . The closure system of  claim 13 , wherein the main frame comprises a placing board, a connecting portion and two holes, the placing board and the connecting portion are connected to form an inverted T shape, the two holes are respectively disposed at two ends of the placing board, and the lace passes through the two holes to connect to the two guiding portions. 
     
     
         15 . The closure system of  claim 14 , wherein a number of the at least one gear rack is two, the main frame further comprises two gear rack grooves disposed at the placing board and spaced apart from each other, and the two gear rack grooves are configured for the two gear racks to respectively insert therein. 
     
     
         16 . The closure system of  claim 14 , wherein the housing is integrally connected to the placing board, the housing comprises a housing wall, the housing teeth are located at the housing wall, and the engaging unit is located within the housing. 
     
     
         17 . The closure system of  claim 11 , wherein the engaging unit further comprising an engaging disc and a blocking portion, the elastic pawl comprises an arm portion and a toothed portion, the arm portion is extended outward from the engaging disc along a circumference direction, the toothed portion is connected to a distal end of the arm portion, the blocking portion protrudes outward from the engaging disc and is below the arm portion along an axis, and as the elastic pawl is deflected radially inward, the toothed portion corresponds to the blocking portion. 
     
     
         18 . The closure system of  claim 11 , wherein the engaging unit comprises a plurality of driving teeth facing toward the gear, the gear further comprises a plurality of coupling teeth to engage with the driving teeth. 
     
     
         19 . The closure system of  claim 11 , wherein the engaging unit further comprises a plurality of depressions facing toward the knob, the knob comprises a plurality of driving tabs and a deflecting tab, the driving tabs respectively protrude into the depressions, and the deflecting tab protrudes into a gap between the elastic pawl and the housing teeth; as the knob is rotated in the tensioning direction, the driving tabs drive the engaging unit to rotate the gear in the tensioning direction; as the knob is rotated in the releasing direction, the driving tabs are respectively moved in the depressions, and the deflecting tab pushes the elastic pawl to deflect radially inward, thereby separating the elastic pawl and the housing teeth. 
     
     
         20 . The closure system of  claim 11 , wherein a hardness of the at least one gear rack is larger than or equal to 50 D. 
     
     
         21 . A closure system, comprising:
 a fastening article disposed at a to-be-fastened article and comprising a main frame and at least one guiding portion, wherein a distance is included between the at least one guiding portion and the main frame;   a fastening device disposed at the main frame and comprising:
 at least one gear rack comprising a plurality of protruding teeth, the protruding teeth respectively comprising a plurality of edge curves, wherein each of the edge curves is selected from one of a logarithmic spiral curve, an Archimedean spiral curve, a Limaçon de Pascal curve, an elliptic curve, a higher order curve, a combined curve and a combination thereof; 
 a driving wheel comprising a plurality of driving pins which correspond to the protruding teeth; 
 a knob operably coupled to the driving wheel; and 
 an engaging unit located between the driving wheel and the knob; and 
   a lace passing through the main frame and the at least one guiding portion, wherein one end of the lace is connected to the at least one gear rack;   wherein as the knob is rotated in a tensioning direction by a force, the driving wheel is rotated to drive the at least one gear rack, and the lace pulls the at least one guiding portion to move close to the main frame; as the force is removed, the engaging unit prohibits the driving wheel from rotating in a releasing direction to fix a position of the at least one gear rack.   
     
     
         22 . The closure system of  claim 21 , wherein the fastening article further comprises a sub-frame, a number of the at least one guiding portion is two, one of the two guiding portions is disposed at one end of the sub-frame, and another one of the two guiding portions is disposed at another end of the sub-frame. 
     
     
         23 . The closure system of  claim 22 , wherein the main frame comprises a placing board, a connecting portion and two holes, the placing board and the connecting portion are connected to form an inverted T shape, the two holes are respectively disposed at two ends of the placing board, and the lace passes through the two holes to connect to the two guiding portions. 
     
     
         24 . The closure system of  claim 23 , wherein the fastening device further comprises a housing assembling with the fastening article, the housing comprises a housing wall, a bottom, a plurality of housing teeth and at least two gear rack holes, the housing teeth are located at an inner surface of the housing wall, the bottom is connected to one end of the housing wall, the at least two gear rack holes are symmetrically located at the housing wall, the at least one gear rack passes through the at least two gear rack holes to enter a space surrounded by the housing wall, and the engaging unit is located within the housing and comprises an elastic pawl corresponding to the housing teeth.