1. Window, door and/or façade construction comprising a corner joint (50, 60,
70) having two metal profiles (1, 2) connected to one another by one or more
5 welded joints (6, 7, 6' ,7', 10, 10', 11, 11', 33), wherein the welded joint or welded
joints (6, 7, 6' ,7', 10, 10', 11, 11', 31, 33) is designed as a laser-welded joint,
characterized in that the welded joint and/or welded joints (6, 7, 6', 7', 10, 10', 11,
11', 33) connect the profiles (1, 2) to each other indirectly by means of a corner
connector angle (12, 16, 32), wherein the profiles (1, 2) particularly preferably each
10 have profile chambers (8, 9), wherein the corner connector angle (12, 16, 32) has
at least two legs which are inserted into the profile chambers (8, 9).
2. Window, door and/or façade construction according to claim 1,
characterized in that the welded joint (6, 7, 6', 7', 10, 10', 11, 11', 31, 33) is
15 designed as a weld seam, as a line of a plurality of weld spots or surface welding
geometry with a projection relative to the adjacent areas of less than 1 mm,
preferably less than 0.5 mm, preferably less than 0.1 mm, or relative to the
adjacent areas as a recess.
20 3. Window, door and/or façade construction according to claim 1 or 2,
characterized in that a painted area adjacent to the laser-welded joint is formed
as a burn-off area, which has products of the thermal decomposition of the paint.
4. Window, door and/or façade construction according to claim 3,
25 characterized in that the painted area comprising the products of the thermal
decomposition of the paint, as a burn-off area, extends away from the laser-welded
joint over a width of less than 2 mm, preferably less than 1 mm.
5. Window, door and/or façade construction according to one of the preceding
30 claims, characterized in that the corner connector angle (12, 16, 32) is designed
to build up a pretension between two contact surfaces resting against each other in
the contact area (3) of the metal profiles (1, 2) in the assembled state of the corner
joint (50, 60).
35 6. Window, door and/or façade construction according to one of the preceding
claims, characterized in that the longitudinal axes of the legs of the corner
connector angle (12, 16, 32) define a first angle, wherein an inner angular surface
(36) formed from both legs has a recess in the contact area of both legs or defines
a second angle which is smaller than the first angle.
21
7. Window, door and/or façade construction according to one of the preceding
claims, characterized in that the two legs of the corner connector angle (12, 16)
are designed as spring legs (15, 19) for support against a profile wall.
5
8. Window, door and/or façade construction according to one of the preceding
claims, characterized in that the welded joint is arranged within a groove (4, 5) of
the profile (1, 2), preferably along a groove base, particularly preferably along a
weatherstrip groove.
10
9. Window, door and/or façade construction according to one of the preceding
claims, characterized in that the welded joint (6, 7, 6', 7', 10, 10', 11, 11', 31, 33)
is designed as a through-welded welded joint in such a way that at least one profile
wall forms a solidified weld pool over the entire thickness of the profile wall and,
15 preferably when a corner connector angle (12, 16, 32) is used, a section of the
corner connector angle (12, 16, 32) also forms part of the weld pool.
10. Window, door and/or façade construction according to one of the preceding
claims, characterized in that the welded joint (6, 7, 6', 7', 10, 10', 11, 11', 31, 33)
20 is designed without filler metal.