Chuck for drilling and chiseling tools

A chuck for drilling and chiseling tools, comprising a receiving sleeve (1) having a central bore for receiving a tool shank (2) and at least one through-opening (12) formed in a sleeve wall;

• at least one locking member (6) supported for a limited pivotal movement about a pivot axis, which extends substantially perpendicular to a longitudinal axis of the receiving sleeve, and projecting at least partially into the through-opening (12) of the receiving sleeve (1), the locking member (6) extending, in a locking position thereof, through the through-opening (12) of the receiving sleeve (1) and into a receiving sleeve interior;
• a guide ring (5) surrounding the receiving sleeve (1) and at least partially overlapping the locking member (6) in the locking position thereof, preventing the locking member (6) from pivoting into a release position thereof;
• and an actuation sleeve (7) displaceable in a direction opposite to an operational direction of the tool against a spring-biasing force for enabling pivoting of the locking member (6) into the release position thereof, the locking member (6) being pivotally connected with the actuation sleeve (7).