Fixing assembly for two components such as protective sleeve to cylinder lock mounting plate uses dowels expanded by screws in sleeve bores

摘要

The fixing assembly, especially for a protective sleeve (22) fitted to a cylinder lock mounting plate (10), consists of expanding dowels (28) inserted into bores (26) in the sleeve and expanded by tapering bushes (30) on screws (32). Each dowel, made from a softer material than the screw, such as brass, has a fixed end and a slotted end that expands under pressure from a tapered bush, the expanding end having a rough outer surface or a ring to grip the inner surface of the bore.