Quick release chuck
When the control element (20) is rotated and moved axially backwards the guide sleeve releases the clamping jaws in order to facilitate the insertion of the tool (34). The sleeve can be axially moved along a central element (32) and is prevented from a rotary motion by a spring element. When a linear extension (40) of the locking spring (22) engages with a groove (28) at the central element (32) a u-shaped extension (38) is moved into a circular groove (66, 68), securing the components accommodated within a locking sleeve (36).