Arm bearing for an awning

An arm bearing for an awning, comprising:

• at least one support block (2),
• at least one bearing block (4) arranged to swivel about a first rotation axle (13) into a drop-out position,
• an arm (20) rotatable about a second rotation axle (14) transversely to said first rotation axle (13),
• a threaded coupling rod (5) coupling said support block (2) and said bearing block (4) for tilting movement of said bearing block (4),
• an adjusting nut (9) coupled to said threaded coupling rod (5) for limiting said tilting movement of said bearing block (4) within variable limits,
• at least one lock (15) coupled to said arm (20) and displaceable transversely to said threaded coupling rod (5) for locking engagement with said adjusting nut (9),
• said adjusting nut (9) having at least one recess (3) or projection (23) arranged approximately radially with respect to said threaded coupling rod (5) for locking engagement with said lock (15), and
• an eccentric cam (6) rigidly connected to said arm (20) for positively controlling displacement of said lock (15), wherein:
• said at least one bearing block (4) is u-shaped, and receives said threaded coupling rod (5) between limbs (21) of said u-shaped bearing block (4), and
• at least one of said limbs (21) has a through-hole aligned with said recess (3) in a locking position to guide said lock (15) into locking engagement with said adjusting nut (9).