Indretning ved en håndværktøjsmaskine

PCT No. PCT/DE91/00787 Sec. 371 Date Apr. 7, 1993 Sec. 102(e) Date Apr. 7, 1993 PCT Filed Oct. 8, 1991 PCT Pub. No. WO92/06823 PCT Pub. Date Apr. 30, 1992.A device for transmitting a rotary and/or percussive movement to a tool is formed in such a way that the associated tools having three grooves arranged in rotationally symmetrical fashion can likewise be clamped in drill chucks having three chuck jaws. In addition, the tool is to have the limited axial mobility required when hammer drilling or chiselling. For this purpose, the device is equipped with three rotary driving elements arranged in a location hole and projecting inwards. The rotary driving elements are arranged in rotationally symmetrical fashion, are of equal width and have flanks which extend approximately parallel to one another. One of the rotary driving elements is longer in the radial direction than the other two in order to guarantee positionally correct insertion of the tool and satisfactory locking of a locking body in a closed groove of the tool. The rotary driving elements are fixed immovably in the location hole. A blocking element is arranged at least at one side wall of the open groove and narrows its otherwise free cross-section.