| 摘要 |
Blade clamps (26) may reliably secure blades to reciprocating power tools. The power tools may include a reciprocating drive shaft (24) partially extending from the tool housing. A first end of a rod (37) may be attached to the drive shaft. A second end of the rod may include a blade slot (37a) defined to receive the blade so that the longitudinal axis of the blade aligns with a longitudinal, reciprocating axis of the drive shaft. An aperture (37b) may be defined substantially perpendicular to the first blade slot and may communicate with the blade slot. A sleeve (33) may be rotatably mounted on the rod so as to pivot between an initial locking position and a blade replacement position. A cam surface (33c) is defined on an inner surface of the sleeve. A stopper projects from the cam surface or the rod and defines the blade replacement position. A pushpin (42) may be slidably disposed within the rod aperture so that a contact portion of the pushpin slidably contacts the cam surface. The pushpin may contact the first stopper in the blade replacement position and prevent the sleeve from pivoting beyond the blade replacement position. A collar may pivotally coupled to the tool housing and at least partially surround the sleeve and the reciprocating drive shaft. The collar may include a manually operable tab formed on an outer surface. When the collar is manually pivoted in an opening direction, the collar engages the sleeve and causes the sleeve to rotate toward the blade replacement position. When the collar is returned to a closed position, the sleeve disengages from the collar. <IMAGE> |
