Patent ID: 8182006
Filing Date: 2012-05-22
Classification: E05B,Y10T

Abstract:
1. A cylinder lock comprising: an outer rose disc including a main disc portion that has an inner periphery defining a middle opening, and a lateral rim that extends annularly and axially from an outer periphery of said main disc portion and that has protrusions which are opposite to each other; a reinforcement structure including a first plate section that is opposite to said main disc portion and that has a central hole aligned with said middle opening, and two passage holes respectively disposed on two sides of said central hole, two second plate sections extending transversely and respectively from two opposite ends of said first plate section towards said main disc portion, and two support sections respectively extending from said second plate sections to said lateral rim and engaging said protrusions; a latch mechanism having two connecting holes, and a latch adapted to extend retractably into a latch hole; an inner rose disc having two screw holes; two securing rods each connected to said outer rose disc and extending through one of said passage holes, and one of said connecting holes; two screws respectively passing through said screw holes and engaged with internal screw threads of said securing rods; an outer drive tube extending through said middle opening and said central hole; and an outer handle connected to said outer drive tube; wherein each of said support sections has a third plate portion extending transversely and outwardly from one of said second plate portions to said lateral rim, and a fourth plate portion extending transversely from said third plate portion and having an outer surface abutting against an inner surface of said lateral rim, said outer surface having a recess, said protrusions projecting inwardly from said inner surface of said lateral rim and being inserted respectively into said recesses formed in said outer surfaces of said fourth plate portions of said support sections.