Deflector attachment for a drilling tool, drilling device, and conversion set, and method for carrying out drilling at locations which are difficult to reach

A drilling apparatus (10) comprising:

• a drilling device (111) or a drilling resistance measuring device (11);
• a drilling needle (19) supported and guided along a drill axis (b) in the drilling device (111) or the drilling resistance measuring device (11), the drilling needle (19) exiting from a front side of a device housing (12) of the drilling device (111) or of the drilling resistance measuring device (11);
• a deflector attachment (1) arranged at the front side of the device housing (12);
• the deflector attachment (1) comprising a deflector housing (2, 20, 22) configured to guide the drilling needle (19), wherein the deflector housing (2, 20, 22), in an arrangement of use, is curved about a predetermined angle (α);
• wherein a section of the drilling needle (19) exiting from the deflector attachment (1) is guided along a drilling needle exit axis (a) of the deflector attachment (1), wherein the drilling needle exit axis (a) of the deflector attachment (1) is offset, in the arrangement of use, by the predetermined angle (α) in relation to the drill axis (b);
• wherein the deflector housing is a rigid deflector housing (2) comprising a curvature about the predetermined angle (α);
• wherein the deflector attachment (1) comprises an adapter (8) arranged at a first end of the deflector attachment (1), the first end facing the drilling device (111) or the drilling resistance measuring device (11), in the rigid deflector housing (2) and configured to guide the drilling needle (19), wherein the deflector attachment (1) further comprises a holder (7) arranged at the first end in the rigid deflector housing (2), wherein the holder (7) holds and centers the adapter (8).