| 摘要 |
The present invention relates to a device for preventing the separation or loosening of a nose key, which can prevent the loosening of a fixating bolt caused by vibration and centrifugal force generated from high-speed rotation due to repulsive power of a spring when the fixating bolt is fixated through the mounting of the spring in the lower part of a nose key and the combination of the nose key into a combining groove of a spindle. The device comprises a spindle (10) which has symmetric combining grooves (20a) therein; a nose key (20) which is inserted inside the spindle (10); a spring (40) which is mounted on the bottom of the nose key (20); and a fixating bolt (30) which fixates the nose key (20) combined with the spring (40) to the combining groove (20a) of the spindle (10). |
