Electricity distribution panel or box with means to automatically fix the cover on the chassis

摘要

The switchboard or case has a fixing unit (300) for fixing a cap (200) on a case (100). Hooking units (320) cooperate with complementary hooking units, where the hooking units have a spigot and a slot (321). The spigot is extended along an axis (A2) that is projection on a plane orthogonal to an engagement direction (A3). The axis is shifted with respect to a pivoting axis (A1) in a manner to generate a torque naturally driving the fixing unit in rotation around the pivoting axis toward a hooked position when installer applies an effort on the cap along the engagement direction.