Retractable leash for rolling up and unrolling a leash

A retractable leash device for rolling up and unrolling a leash, the leash device comprising:

• a carrier;
• a leash roller mounted rotatably on the carrier;
• a resetting means for resetting the leash on the leash roller into a rolled-up position, in which the leash is wound up onto the leash roller;
• a blocking means for blocking the unrolling of the leash from the leash roller;
• a transmission coupled to the leash roller to bring about blocking of the blocking means when a predetermined leash length is unrolled from the leash roller, the transmission comprising a first transmission element arranged rotatably relative to the carrier, and a second transmission element arranged nonrotatably relative to the carrier, wherein the first transmission element has an inner circumferential surface and the second transmission element has an outer circumferential surface associated with the inner circumferential surface, the outer circumferential surface and the inner circumferential surface meshing with one another at least in an active state;
• and
• a release means for releasing the first transmission element and the second transmission element from one another, the release means comprising a manual, adjustable release element comprising a rotatable release disk, the rotatable release disk comprising at least one slope, on which slides at least one cam comprised of a slope associated with the second transmission element, for the release thereof.