Patent ID: 8690095

Claim:
A bobbin fixing apparatus comprising: a mounting plate; a rotating shaft installed to a front surface of the mounting plate and provided with a fixing unit partially protruding from the rotating shaft so as to be inserted into the rotating shaft; and a bobbin on or from which an object is wound or unwound, the bobbin being placed on the rotating shaft regardless of a direction in which the bobbin accesses the rotating shaft such that the fixing unit is exposed in front of the bobbin wherein the fixing unit includes: a recess indented in a front circumferential position of the rotating shaft; and a shaft fixing member inserted in the recess so as to partially protrude from the rotating shaft, the shaft fixing member being completely inserted into the recess while pressing an elastic member provided therebelow upon receiving pressure applied when the bobbin is placed on the rotating shaft; wherein the bobbin includes: a rotating body consisting of a first rotating body and a second rotating body spaced apart from each other, the first and second rotating bodies respectively having shaft holes for insertion of the rotating shaft; a plurality of bobbin members, on which the object is wound, each bobbin member having one end and the other end respectively connected to the first and second rotating bodies to guide insertion of the rotating shaft into the rotating body; and an end coupler having one end and the other end respectively connected to the first and second rotating bodies to guide insertion of the rotating shaft into the rotating body, the end coupler serving to keep an end of the object in a fixed position or release the end of the object from the fixed position upon receiving pressure applied when the rotating body is placed on the rotating shaft; and wherein the end coupler includes: a first coupling member in which a moving pressure member centrally provided with a first magnet is installed, the moving pressure member being configured such that both ends thereof protrude outward from the first and second rotating bodies and being movable toward the first rotating body or the second rotating body; and a second coupling member spaced apart from the first coupling member and internally provided with a second magnet at a position corresponding to the first magnet both ends of the second coupling member being installed in vertically elongated holes of the first and second rotating bodies so as to be moved toward or away from the first coupling member.