Tool clamping mechanism for a power tool
AssigneeRobert Bosch GmbH
InventorMatt Schumann
Life of this patent
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Abstract
A clamping mechanism for a power tool which has a bayonet washer rotatably mounted on the end of a plunger so that the bayonet washer is rotatable between an open and a closed position. The bayonet washer is biassed towards the closed position by a torsion spring, but is latched in the open position when no operating member is positioned in the clamping mechanism. When an operating member is inserted into the mechanism through a slot in the bayonet washer and into engagement with the plunger, the washer is automatically released from the open position and rotates under the biassing force of the torsion spring to the closed position whereupon the operating member is locked into the power tool.
Claims13
A power tool comprising a clamping mechanism for a removable operating member, the clamping mechanism including a locking member which is rotatable between an open position in which the operating member may be inserted into the tool and a closed position in which removal of the operating member is prevented;
- and means for latching the locking member in the open position when no operating member is present, said locking member having at least one recess and being rotatable about an axis parallel to an insertion direction of the operating member, wherein the latching means includes at least one projection movable in a direction opposite to the insertion direction to engage said at least one recess in the locking member.
A power tool comprising a clamping mechanism for a removable operating member, the clamping mechanism including a locking member which is rotatable between an open position in which the operating member may be inserted into the tool and a closed position in which removal of the operating member is prevented;
- and means for latching the locking member in the open position when no operating member is present, wherein the locking member includes a washer through which the operating member may be inserted.
Dependencies are inferred from the claim text.