Tightening device, particularly for a sports shoe

Abstract

A tightening device, particularly for a sports shoe comprising a first mechanism for transmitting movement to a second mechanism, which is operatively connected to at least a first cable element for fastening the sports shoe, the first mechanism being activated by a third mechanism, which is manually operated by the user.

What is claimed is:  
     
         1 . A tightening device, particularly for a sports shoe, comprising a first mechanism for transmitting movement to a second mechanism, which is operatively connected to at least a first cable element for fastening said sports shoe, said first mechanism being activated by means of a third mechanism, which is manually operated by the user.  
     
     
         2 . The tightening device according to  claim 1 , further comprising means of locking and release interacting selectively with said first mechanism.  
     
     
         3 . The tightening device according to  claim 1 , wherein a first box-shaped body is associated to said sports shoe for containing at least said first mechanism and said second mechanism.  
     
     
         4 . The tightening device according to  claim 3 , wherein said second mechanism comprises first recovery means for recovering a first cable strand, which is partially arranged along said sports shoe and which is connected at a free end to a portion of said sports shoe.  
     
     
         5 . The tightening device according to  claim 4 , wherein said first mechanism and said third mechanism comprise, at least partially, second recovery means for recovering a second cable strand connecting said first mechanism and said third mechanism.  
     
     
         6 . The tightening device according to  claim 5 , wherein said first mechanism comprises at least one first gearwheel, said first gearwheel being made in a single body with a first pulley, which houses, at least partially, said second cable strand.  
     
     
         7 . The tightening device according  claim 6 , wherein said first mechanism comprises a second gearwheel, which is connected to said first gearwheel, said second gearwheel having a smaller diameter than said first gearwheel.  
     
     
         8 . The tightening device according to  claim 7 , wherein said second mechanism comprises a third gearwheel, which interacts with said second gearwheel, said third gearwheel having a smaller diameter than said second gearwheel.  
     
     
         9 . The tightening device according to  claim 8 , wherein said first recovery means comprise a second pulley, which is made in a single unit with said third gearwheel.  
     
     
         10 . The tightening device according to  claim 9 , wherein said second recovery means comprise said first pulley, positioned at the front of said first gearwheel in an opposite position to said second gearwheel, and a third pulley, which is arranged with said third mechanism, in a second box-shaped body, arranged above said first box-shaped body.  
     
     
         11 . The tightening device according to  claim 9 , further comprising, approximately at the rear of said second pulley, a first resilient element, aimed at exerting by pre-loading a force, which opposes to an action of recovery of said first cable strand, obtained by means of a rotation of said second mechanism.  
     
     
         12 . The tightening device according to  claim 10 , wherein said third mechanism comprises gripping means for the user and a second resilient element, arranged so as to be pre-loadable during a counter-clockwise rotation of said third pulley.  
     
     
         13 . The tightening device according to  claim 1 , wherein said means of locking and release interact with said first mechanism, so as to ensure that a pre-set clamping force is maintained.  
     
     
         14 . The tightening device according to  claim 6 , wherein said means of locking and release comprise a buckle, which is pivotally mounted inside said first box-shaped body and which protrudes externally from said first box-shaped body, so as to be manually activated by the user.  
     
     
         15 . The tightening device according to  claim 14 , wherein said buckle is operatively associated to a third resilient element ensuring the locking of said buckle in a deactivated position.  
     
     
         16 . The tightening device according to  claim 14 , wherein said buckle is pivotally connected to a lever, which protrudes transversely downwards, so as to interact selectively with said first gearwheel.  
     
     
         17 . The tightening device according to  claim 15 , wherein a fourth resilient element is operatively connected, at one end, to said lever and, at the another end, to said buckle.