Rock-drilling equipment as well as female and male parts therefor

Rock-drilling equipment according to any one of the preceding claims, characterized in that, in an arbitrary cross-section (A) along the extension of the thread, the radii (r1, r2) of the groove bottom (14) and of the radius transitions (22) are equally large while forming a full radius profile.

Rock-drilling equipment according to any one of the preceding claims, characterized in that, in an arbitrary cross-section (C) along the extension of the thread, the radii (r2) of the radius transitions (22) are minimal and the radius (r1) of the groove bottom (14) is infinitely large.

Rock-drilling equipment according to any one of the preceding claims, characterized in that the radius (r1) of the groove bottom (14) is minimal in an arbitrary cross-section and increases uniformly toward another cross-section, at the same time as the radii (r2) of the radius transitions decrease uniformly in the same direction.

Female part for rock-drilling equipments, comprising an internal trapezoidal thread in the form of a helix thread ridge (3), which is delimited by a top (11) and two flanks (12a, 12b), a groove (13), having a bottom (14), running between two tops, and which thread ridge extends a plurality of turns between a front end (5) and a rear end (6), said top, (11) touching an imaginary cylinder or cone that is concentric with a centre axis (C) of the female part, characterized in that the bottom (14) of the groove (13) has a concave and partially circular cross-section shape along at least a part of the extension of the groove, and trans-forms into the flanks (12a, 12b) via concave radius transitions (22), the radii (r2) of which decrease in the direction from the front end (5) of the thread toward the rear one (6), at the same time as the radius (r1) of the groove bottom (14) increases in the same direction.

Male part for rock-drilling equipments, comprising an external trapezoidal thread in the form of a helix thread ridge, which is delimited by a top (16) and two flanks (17a, 17b), a groove (18), having a bottom (19), running between two tops, and which thread ridge extends a plurality of turns between a front end (7) of the male part and a rear end (8), said top touching an imaginary cylinder or cone that is concentric with a centre axis (C) of the male part, characterized in that the bottom (19) of the groove has a concave and partially circular cross-section shape along at least a part of the extension of the groove, and trans-forms into the flanks (17a, 17b) via concave radius transitions, the radii of which increase in the direction from the front end of the thread toward the rear one, at the same time as the radius of the groove bottom decreases in the same direction.