Patent ID: 6276065
Filing Date: 2001-08-21
Classification: B23D,Y10S

Abstract:
A blade attaching and detaching mechanism for a saber saw comprising a plunger for holding a rear end of a blade and reciprocating the blade to perform a cutting or sawing operation, said blade attaching and detaching mechanism comprising:a slit formed in said plunger so as to extend in an axial direction of said plunger;a bore formed in said plunger so as to extend in a direction normal to the axial direction of said plunger and merge with said slit;a locking pin extending in a direction normal to the axial direction of said plunger and disposed in said bore so as to be slidable in said bore, said locking pin comprising a projecting portion engageable with a hole formed on said blade and a pressing portion having an engaging surface parallel to said blade for pressing a side surface of said blade to an opposed wall of said slit so as to substantially prevent movement of said blade in relation to said opposed slit wall; anda blade holder coupled around said plunger and slidable in the axial direction of said plunger,wherein said blade holder shifts in an axially forward direction to generate a pushing force applied to said locking pin and causes the locking pin to engage with the hole of the blade, andsaid blade holder shifts in an axially rearward direction to release the pushing force applied to said locking pin and causes the locking pin to disengage from the hole of the blade.