| 摘要 |
<p>The present invention comprises: a first magnet in which the S pole and the N pole are horizontally arranged relative to a first plate and a second plate; and a second magnet in which the N pole and the S pole are horizontally arranged relative to the second plate and a third plate. Thus, since the strength of magnetic fields generated from the first magnet and the second magnet becomes larger, the operation efficiency may be improved. Further, magnetized areas of the first magnet and the second magnet are increased, thereby preventing the first magnet and the second magnet from being bent or damaged during the magnetization process of the first magnet and the second magnet.</p> |
