| 摘要 |
PURPOSE:To prevent a rotary shaft from coming off in the axial direction by providing a cutout face which is inclined toward an axis on an engaging face for engaging an engaging element. CONSTITUTION:An engaging face 13 having a flat face section is provided inclinedly from an inserting end to the other end in the direction of axis, on the inserting shank 12 of a rotary shaft 11 which is inserted into an inserting hole 1. As the rotary shaft 11 is inserted into the inserting hole 1, an engaging element 3 is pushed to the outside of a rotary sleeve by means of the engaging face 13, not to block the entrance of the rotary shaft. Then, as a mounting/ removing sleeve 5 is made slide due to the restoring force of a spring 15, the engaging element 3 is guided by a taper face 8 and pushed in toward the inserting hole and brought into pressure contact with the engaging recess part of the engaging face 13. Accordingly, the rotary shaft 11 is prevented from coming off in the axial direction due to the inclination of the engaging face 13. |
