Patent ID: 7581421
Filing Date: 2009-09-01
Classification: E05B,Y10T

Abstract:
1. A door lock assembly comprising: a handle having a tubular body provided with a radial retention slot; a spindle tube extending into said tubular body, and having a passage opening, and a bounding edge that bounds said passage opening; a retaining plate disposed transversely inside said spindle tube, and having a retaining tongue projecting into said retention slot from said spindle tube, and a stabilizing part opposite to said retaining tongue; a spring biasing said retaining plate so that said retaining tongue projects into said retention slot; a support structure disposed within said tubular body oppositely of said retention slot, said support structure having a support part extending radially into said spindle tube, a base part disposed in said tubular body, a neck part connected between said base part and said support part and passing through said passage opening, and an engagement groove formed between said base part and said support part and adjacent said neck part, said engagement groove engaging said bounding edge; and a lock unit mounted within said tubular body, and having a key plug, and a tailpiece connected to said key plug and extending between said support part and said stabilizing part, said tailpiece having two diametrically opposite edges, wherein, when said lock unit is in a locking position and when said retaining tongue is pressed against said spring through said retention slot, one of said edges of said tailpiece abuts against said support part, and the other one of said edges abuts against said stabilizing part to prevent said retaining tongue from moving away from said retention slot.