| 摘要 |
The present invention relates to a bobbin fixing device which fixes a bobbin so that the bobbin into which the rotary shaft of a winding machine cannot be extracted from the rotary shaft. A bobbin fixing device according to the present invention comprises: an inner cylindrical member (10); an outer cylindrical member (20); an intermediate cylindrical member (30) having an inclined surface (32) and arranged between the inner cylindrical member (10) and the outer cylindrical member (20); steel balls (40) arranged in the ball holes (11) of the inner cylindrical member (10), and protruding to the hollow parts (13) of the inner cylindrical member (10) by the inclined surface (32) of the intermediate cylindrical member (30); and a spring (50) arranged between the inner cylindrical member (10) and the outer cylindrical member (20), having one end held by a first protruding part (15) formed at the middle of the outer circumferential surface of the inner cylindrical member (10), and having the other end held by a second protruding part (22) formed at the end of the outer cylindrical member (20). |
