Patent ID: 6866177

Claim:
A depth control device for a fastener driving tool that includes a trigger, an actuator disposed movably therein and associated with the trigger for actuating the driving tool upon pulling of the trigger, a fastener guiding body, and a workpiece contact element associated with the actuator and movable relative to the fastener guiding body in a longitudinal direction between a non-actuated position, in which the driving tool cannot be actuated by the actuator upon pulling of the trigger, and an actuated position, in which the driving tool is actuated by the actuator upon pulling of the trigger, said depth control device comprising: a linkage adapted to be connected to the workpiece contact element so as to be movable together therewith in the longitudinal direction; a driving member; a cam unit adapted to be mounted in the driving tool and including a cam that defines a first cam face, and a cam follower that defines a second cam face, said cam follower being connected to said linkage so as to be movable together with said linkage and the workpiece contact element in the longitudinal direction between first and second longitudinal positions relative to said cam when the workpiece contact element is disposed at the non-actuated position, said cam being connected to said driving member, which is operable to drive said cam to move in a transverse direction relative to the longitudinal direction between first and second transverse positions relative to said cam follower, said first and second cam faces engaging each other slidingly and in such a manner as to permit movement of said cam follower together with said linkage and the workpiece contact element between said first longitudinal position and said second longitudinal position when said cam is driven by said driving member to move between said first transverse position and said second transverse position, said cam follower being movable together with said linkage, said cam and said driving member from an adjusted position between said first and second longitudinal positions to a third longitudinal position in the longitudinal direction upon movement of the workpiece contact element from the non-actuated position to the actuated position; and a push member adapted to contact the actuator and associated with said cam in such a manner as to be movable together therewith in the longitudinal direction upon movement of the workpiece contact element between the non-actuated position and the actuated position.