Chuck mechanism for drill - has stop device for tension ring, comprising crown of stop recesses, and stop component which presses into recesses under force of stop spring

摘要

Stops are provided, which limit the rotation of a positioning ring (15) relatively to the chuck body (1) in both directions. The stop component (10) is fitted on a drag ring (17), which is coaxially rotatably located on the chuck body (1). An adjustment spring effective between the drag ring (17) and the chuck body (1) activates the drag ring (17) in relation to the chuck body in the same direction of rotation as that of the tension ring (8) when the drill chuck is closed. Between the positioning ring (15) and the drag ring (17) a securing device is formed having two peripheral arresting positions, whereby the stop component (10) in the one arresting position is located in the engaged state in the stop recesses (9) of the tension ring (8) and in the other arresting position is in the disengaged state. USE/ADVANTAGE - Modified drill chuck which is easier to handle than known drill chucks.