Rebar tying machine

Abstract

A rebar tying machine disclosed herein may include a reel having a wire, a wheel holding the reel and rotatable integrally with the reel, a wheel holder rotatably holding the wheel, and an elastic body interposed between the wheel and the wheel holder. Another rebar tying machine disclosed herein may include a reel having a wire, a wheel holding the reel and rotatable integrally with the reel, and a wheel holder rotatably holding the wheel. The wheel may be movable relative to the wheel holder.

What is claimed is: 
     
         1 . A rebar tying machine, comprising:
 a reel having a wire;   a wheel holding the reel and rotatable integrally with the reel;   a wheel holder rotatably holding the wheel; and   an elastic body interposed between the wheel and the wheel holder.   
     
     
         2 . The rebar tying machine according to  claim 1 , wherein
 the reel is provided with an opening partitioned by a partition wall, and   the wheel includes an engagement protrusion which is configured to enter the opening and abut the partition wall in a direction in which the reel rotates.   
     
     
         3 . The rebar tying machine according to  claim 1 , wherein the elastic body is a compression spring. 
     
     
         4 . The rebar tying machine according to  claim 1 , further comprising a pressing mechanism configured to press the reel against the wheel. 
     
     
         5 . The rebar tying machine according to  claim 1 , further comprising a rotation detecting mechanism configured to detect rotation of the wheel relative to the wheel holder. 
     
     
         6 . A rebar tying machine, comprising:
 a reel having a wire;   a wheel holding the reel and rotatable integrally with the reel; and   a wheel holder rotatably holding the wheel,   wherein the wheel is movable relative to the wheel holder.   
     
     
         7 . The rebar tying machine according to  claim 6 , wherein
 relative to the wheel holder, the wheel is movable in a direction along a rotation axis of the reel and is immovable in a direction perpendicular to the rotation axis of the reel.