Wheels blocking mechanism for shopping trolley has vertical pivoting axis rotating around the wheel axis and the locking zone of the platform cooperating with a slot of the frame when the weight reaches a threshold

摘要

Wheel (1) has axis (2) in bracket (3) forming a platform (5) which has a pivoting zone (12) and a locking zone (13). When the trolley reaches a certain weight, the vertical pivoting axis (7) rotates around the wheel axis and the locking zone of the platform cooperates with a slot (14) of the frame (8) .