Cord taking-up and releasing device

Abstract

A cord taking-up and releasing device includes a main body consisting of a housing, a turning knob on a top of the housing, and a seat below the housing; a taking-up and releasing unit received in the housing and including a first shaft connected at an upper end to the turning knob and at a lower end to a retaining gear; and a cord-winding unit mounted on the seat of the main body and including a reel having an upper end engaged with the retaining gear, a lower end rotatably connected to a second shaft, and a middle portion, to which two ends of a cord are tied. Through manipulation of the turning knob, the taking-up and releasing unit brings the cord-winding unit to quickly take up or release the cord tied to the reel without being affected by the length of the cord wound around the reel.

1 . A cord taking-up and releasing device, comprising: 
 a main body consisting of a housing, a turning knob on a top of said housing, and a seat below said housing;    a taking-up and releasing unit received in said housing of said main body and including a first shaft, and said first shaft having a first end facing outward to fixedly couple with said turning knob and an opposite second end facing inward to fixedly couple with a retaining gear; and    a cord-winding unit mounted on said seat of said main body and including a reel, to which two ends of a cord is tied; said reel having a first end normally engaged with said retaining gear, and an opposite second end rotatably connected to a second shaft;    whereby when said turning knob is turned in a first direction, said taking-up and releasing unit is caused to bring said cord-winding unit to quickly take up said cord around said reel; and when said turning knob is upward pulled and held, said cord-winding unit is disengaged from said taking-up and releasing unit to release said cord from said reel.    
     
     
         2 . The cord taking-up and releasing device as claimed in  claim 1 , wherein said housing of said main body is provided at a top with a first guide hole, via which said first shaft is upward extended to couple with said turning knob, and near a lower end with two spaced holes, via which two ends of said cord are inward extended to tie to said reel.  
     
     
         3 . The cord taking-up and releasing device as claimed in  claim 1 , wherein said seat of said main body is provided at a central area with a second guide hole, through which said second shaft is extended.  
     
     
         4 . The cord taking-up and releasing device as claimed in  claim 1 , wherein said taking-up and releasing unit received in said housing of said main body further includes an upper shaft collar, an upper ratchet, a lower ratchet, and inner and outer elastic elements; 
 and said upper shaft collar having an upper end fixedly fitted in said first guide hole of said housing, and a lower end formed into a radially extended flange to normally bear against an inner side of the top of said housing; and said upper shaft collar being provided at a center with an axially extended shaft hole for said first shaft to extend therethrough.    
     
     
         5 . The cord taking-up and releasing device as claimed in  claim 4 , wherein said upper and said lower ratchet of said taking-up and releasing unit mutually engage with each other, and are respectively provided with a central shaft hole; said upper ratchet being diametrically larger than said lower ratchet, and immovably fitted in an upper part of said housing of said main body; and said lower ratchet being provided in its central shaft hole near a lower end thereof with axial guide slots, and having a lower portion formed into a diametrically reduced cylindrical column for said outer elastic element to mount therearound.  
     
     
         6 . The cord taking-up and releasing device as claimed in  claim 4 , wherein said first shaft is provided on an outer surface with an axially extended flat portion, and has a lower end fixedly fitted in an upper end of a shaft hole of said retaining gear for said retaining gear to always move along with said first shaft, and an upper end around which said inner elastic element is mounted; said upper end of said first shaft being sequentially upward extended through a shaft hole of said lower ratchet, a shaft hole of said upper ratchet, and said shaft hole of said upper shaft collar, and finally fixedly connected to said turning knob; and said C-shaped retaining ring being press-fitted in said annular groove in said housing of said main body.  
     
     
         7 . The cord taking-up and releasing device as claimed in  claim 5 , wherein said first shaft is provided on an outer surface with an axially extended flat portion, and has a lower end fixedly fitted in an upper end of a shaft hole of said retaining gear for said retaining gear to always move along with said first shaft, and an upper end around which said inner elastic element is mounted; said upper end of said first shaft being sequentially upward extended through said shaft holes of said lower ratchet, said shaft hole of said upper ratchet, and said shaft hole of said upper shaft collar, and finally fixedly connected to said turning knob; and said C-shaped retaining ring being press-fitted in said annular groove in said housing of said main body.  
     
     
         8 . The cord taking-up and releasing device as claimed in  claim 1 , wherein said cord-winding unit further includes a lower shaft collar, which together with said reel and said second shaft to form said cord-winding unit.  
     
     
         9 . The cord taking-up and releasing device as claimed in  claim 2 , wherein said cord-winding unit further includes a lower shaft collar, which together with said reel and said second shaft to form said cord-winding unit.  
     
     
         10 . The cord taking-up and releasing device as claimed in  claim 3 , wherein said cord-winding unit further includes a lower shaft collar, which together with said reel and said second shaft to form said cord-winding unit.  
     
     
         11 . The cord taking-up and releasing device as claimed in  claim 4 , wherein said cord-winding unit further includes a lower shaft collar, which together with said reel and said second shaft to form said cord-winding unit.  
     
     
         12 . The cord taking-up and releasing device as claimed in  claim 5 , wherein said cord-winding unit further includes a lower shaft collar, which together with said reel and said second shaft to form said cord-winding unit.  
     
     
         13 . The cord taking-up and releasing device as claimed in  claim 8 , wherein said reel of said cord-winding unit is provided at an upper end with a plurality of axially extended guide slots, at a lower central area with a hollow cylindrical chamber, and at a middle portion between upper and lower ends thereof with a radially inward curved peripheral surface for winding said cord therearound; and said radially inward curved peripheral surface being provided at two properly spaced points with two retaining holes, to which two ends of said cord are tied and fixed in place.  
     
     
         14 . The cord taking-up and releasing device as claimed in  claim 9 , wherein said reel of said cord-winding unit is provided at an upper end with a plurality of axially extended guide slots, at a lower central area with a hollow cylindrical chamber, and at a middle portion between upper and lower ends thereof with a radially inward curved peripheral surface for winding said cord therearound; and said radially inward curved peripheral surface being provided at two properly spaced points with two retaining holes, to which two ends of said cord are tied and fixed in place.  
     
     
         15 . The cord taking-up and releasing device as claimed in  claim 10 , wherein said reel of said cord-winding unit is provided at an upper end with a plurality of axially extended guide slots, at a lower central area with a hollow cylindrical chamber, and at a middle portion between upper and lower ends thereof with a radially inward curved peripheral surface for winding said cord therearound; and said radially inward curved peripheral surface being provided at two properly spaced points with two retaining holes, to which two ends of said cord are tied and fixed in place.  
     
     
         16 . The cord taking-up and releasing device as claimed in  claim 11 , wherein said reel of said cord-winding unit is provided at an upper end with a plurality of axially extended guide slots, at a lower central area with a hollow cylindrical chamber, and at a middle portion between upper and lower ends thereof with a radially inward curved peripheral surface for winding said cord therearound; and said radially inward curved peripheral surface being provided at two properly spaced points with two retaining holes, to which two ends of said cord are tied and fixed in place.  
     
     
         17 . The cord taking-up and releasing device as claimed in  claim 12 , wherein said reel of said cord-winding unit is provided at an upper end with a plurality of axially extended guide slots, at a lower central area with a hollow cylindrical chamber, and at a middle portion between upper and lower ends thereof with a radially inward curved peripheral surface for winding said cord therearound; and said radially inward curved peripheral surface being provided at two properly spaced points with two retaining holes, to which two ends of said cord are tied and fixed in place.  
     
     
         18 . The cord taking-up and releasing device as claimed in  claim 8 , wherein said lower shaft collar is provided at a central area with an axially extended shaft hole, and at a lower portion with a diametrically reduced neck for fixedly mounting in a second guide hole on said seat of said main body.  
     
     
         19 . The cord taking-up and releasing device as claimed in  claim 9 , wherein said lower shaft collar is provided at a central area with an axially extended shaft hole, and at a lower portion with a diametrically reduced neck for fixedly mounting in a second guide hole on said seat of said main body.  
     
     
         20 . The cord taking-up and releasing device as claimed in  claim 10 , wherein said lower shaft collar is provided at a central area with an axially extended shaft hole, and at a lower portion with a diametrically reduced neck for fixedly mounting in said second guide hole on said seat of said main body.  
     
     
         21 . The cord taking-up and releasing device as claimed in  claim 11 , wherein said lower shaft collar is provided at a central area with an axially extended shaft hole, and at a lower portion with a diametrically reduced neck for fixedly mounting in a second guide hole on said seat of said main body.  
     
     
         22 . The cord taking-up and releasing device as claimed in  claim 12 , wherein said lower shaft collar is provided at a central area with an axially extended shaft hole, and at a lower portion with a diametrically reduced neck for fixedly mounting in a second guide hole on said seat of said main body.  
     
     
         23 . The cord taking-up and releasing device as claimed in  claim 8 , wherein said second shaft has an upper end rotatably received in a shaft hole of said reel, and a lower end fixedly fitted in a shaft hole of said lower shaft collar, and said lower shaft collar being located in a lower cylindrical chamber of said reel.  
     
     
         24 . The cord taking-up and releasing device as claimed in  claim 9 , wherein said second shaft has an upper end rotatably received in a shaft hole of said reel, and a lower end fixedly fitted in a shaft hole of said lower shaft collar, and said lower shaft collar being located in a lower cylindrical chamber of said reel.  
     
     
         25 . The cord taking-up and releasing device as claimed in  claim 10 , wherein said second shaft has an upper end rotatably received in a shaft hole of said reel, and a lower end fixedly fitted in a shaft hole of said lower shaft collar, and said lower shaft collar being located in a lower cylindrical chamber of said reel.  
     
     
         26 . The cord taking-up and releasing device as claimed in  claim 11 , wherein said second shaft has an upper end rotatably received in a shaft hole of said reel, and a lower end fixedly fitted in a shaft hole of said lower shaft collar, and said lower shaft collar being located in a lower cylindrical chamber of said reel.  
     
     
         27 . The cord taking-up and releasing device as claimed in  claim 12 , wherein said second shaft has an upper end rotatably received in a shaft hole of said reel, and a lower end fixedly fitted in a shaft hole of said lower shaft collar, and said lower shaft collar being located in a lower cylindrical chamber of said reel.