Patent ID: 9145244
Filing Date: 2015-09-29
Classification: A44B,B65D,F16B

Abstract:
1. A band fastening tool which comprises a main body having a bearing and a rotary lever having a rotary shaft rotatably engaged with the bearing of the main body, while one end of the band being inserted through a locking hole of the main body and locked, the other end of the band being inserted through an insertion hole of the rotary lever rotated to an opening position with respect to the main body, and the rotary lever being rotated to a closing position with respect to the main body to wind the band around the winding shaft of the rotary lever, and thus to hold the band between the main body and the rotary lever while fastening the band, whereby the band being fixed, wherein the bearing of the main body comprises a guide surface inclined to move the rotary shaft of the rotary lever in a direction in which a tensile force of the band acts and a direction approaching a bottom plate of the main body, the guide surface of the bearing comprises a protrusion extending in a direction perpendicular to the tensile force of the band, the rotary shaft comprises a cut-out engaged with the protrusion of the bearing in such a state that the rotary lever rotated to the closing position is moved in the direction in which the tensile force of the band acts and the direction approaching the bottom plate of the main body, the winding shaft of the rotary lever is formed into a cam shape having a base shaft portion which is spaced apart from the bottom plate of the main body and a projecting portion which protrudes from the base shaft portion to press the band onto the bottom plate of the main body in such a state that the rotary lever is rotated to the closing position, the rotary lever comprises, between the rotary lever and the winding shaft, an insertion hole wall for forming an insertion hole through which the band is inserted toward the projecting portion, an engagement claw comprising an engagement surface inclined in the direction in which the tensile force of the band acts and the direction approaching the bottom plate of the main body is provided on an upper surface of the bottom plate of the main body, a claw receiver comprising a receiving surface abutted against the engagement surface of the engagement claw is provided on a lower surface of an upper plate of the rotary lever, as the rotary lever in which the band is inserted through the insertion hole is rotated to the closing position, winding of the band along the base shaft portion of the winding shaft and fixing of the band between the bottom plate of the main body and the projecting portion of the winding shaft are promoted, when the receiving surface of the claw receiver of the rotary lever rotated to the closing position is abutted against the engagement surface of the engagement claw of the main body, and, at the same time, when the rotary lever is moved in the direction in which the tensile force of the band acts in such a state that the rotary shaft is abutted against the guide surface of the bearing, while the engagement between the claw receiver of the rotary lever and the engagement claw of the main body progresses, the rotary shaft moves along the guide surface of the bearing in the direction approaching the bottom plate of the main body to engage the cut-out with the protrusion of the bearing, and the band is fixed while being held between the bottom plate of the main body and the projecting portion of the winding shaft.