Power screwdriver

A power screwdriver, comprising

• a drive part comprising a drive motor,
• a gear case;
• gearing elements arranged in the gear case;
• an output shaft connected to the gearing elements and extending out of the gear case;
• a support arranged offset laterally relative to the output shaft and fixedly connected to the gear case;
• a rotary joint comprised of a drive-associated first ring connected to the drive part and a gearing-associated second ring connected to the gear case;
• an actuating ring arranged coaxially to the output shaft and arranged movably relative to the first ring and relative to the second ring, wherein the first ring and the second ring are arranged coaxially to the output shaft and to the actuating ring, wherein the actuating ring is movable along a movement path extending between a release position, in which the first and second rings are rotatable relative to each other, and a blocking position, in which the first and second rings are blocked relative to each other;
• wherein the actuating ring comprises an outer side provided with a ribbing that increases grip;
• a spring element acting on the actuating ring along the movement path in a direction toward the blocking position;
• at least one blocking element arranged in a dividing plane of the rotary joint so as to be radially movable, wherein the actuating ring comprises a blocking portion, wherein the at least one blocking element is radially moved against the blocking portion and radially supported against the blocking portion only in the blocking position and blocks in the blocking position a rotation of the first and second rings relative to each other, and wherein the at least one blocking element, in the release position, is radially moved away from the blocking portion so that the first and second rings are rotatable relative to each other;
• wherein the at least one blocking element engages a blocking counter surface on an outer surface of the first ring or of the second ring only in the blocking position;
• wherein the at least one blocking element is a ball comprising a half shell that engages the blocking counter surface and comprising a circumferential portion that is facing away from the half shell and is supported against the blocking portion.