Foldable window and door grill

摘要

The grill has vertical support tube (1) carrying hinge arms (2) with bores at precise spacing for the grill rods (3), to which are welded pivot bolts. Between the grill rod and the hinge arm are inserted U-shaped discs. A clamping ring is welded on the pivot bolt.The grill is in two halves held in a stable manner by a grill lock (7) coupled to a hinge strap by shaped sheet metal parts. The lock is in two parts, each with a lock cylinder, lockable by a hook mechanism. Thus the grill combines both a horizontal and vertical strength.