A door lock-and-handle assembly adapted to be mounted on a door panel having inner and outer sides, said door lock-and-handle assembly comprising:
- a bolt receiving housing adapted to be mounted on the inner side of the door panel;
- a dead bolt mounted movably in said bolt receiving housing and movable between extended and retracted positions;
- an escutcheon adapted to be mounted on the outer side of the door panel, aligned with said bolt receiving housing, and having a mounting wall that is formed with a lock receiving recess which is defined by a recess-confining wall, a spindle hole which is defined by a hole-confining wall extending from said recess-confining wall in an axial direction, and at least an engaging groove which is defined by a groove-confining wall extending from said recess-confining wall in a radial direction relative to said axial direction;
- a handle mounted on said mounting wall of said escutcheon, surrounding said spindle hole, formed with a keyhole that is aligned with said spindle hole in said axial direction, and having a driving member extending through said spindle hole and said lock receiving recess;
- a spindle adapted to be turned by a key that is inserted into said keyhole, extending through said spindle hole, said lock receiving recess and the door panel in said axial direction, defining an axis in said axial direction, and turnably coupled to said dead bolt so as to move said dead bolt between said extended and retracted positions upon turning about said axis, said spindle having an engaging portion having a generally rectangular cross-section with two opposing short sides and defining a center line that extends along said axis;
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- at least a locking member received in said lock receiving recess and having a central part formed with an L-shaped spindle opening that is defined by an opening-confining wall and that has a first rectangular space extending in a horizontal direction and having long and short sides, and a second rectangular space which has long and short sides, which extends in a vertical direction relative to said first rectangular space, and which cooperates with said first rectangular space to define said L-shaped spindle opening, said opening-confining wall having an engaging side that confines said long side of said first rectangular space, said locking member having an engaging tongue projecting from said central part and aligned with said engaging groove in said axial direction, said spindle extending through said L-shaped spindle opening in a manner that said engaging portion is received in said L-shaped spindle opening to turnably engage said engaging side of said opening-confining wall of said locking member, said spindle being turnable between a first angular position, where said engaging portion is received in said first rectangular space, and a second angular position, where said engaging portion is received in said second rectangular space, said short side of said second rectangular space having a length that is greater than the length between said center line and said short side of said engaging portion so as to permit rotation of said spindle in said L-shaped spindle opening, said short side of said first rectangular space having a length that is less than the length between said center line and said short side of said engaging portion so that turning of said spindle from said first angular position to said second angular position results in upward pushing engagement between said engaging portion and said engaging side of said opening-confining wall, which, in turn, results in radial movement of said locking member to a locking position, where said engaging tongue extends through said driving member and into said engaging groove to releasably engage said driving member and said engaging groove so as to prevent turning of said handle, and that turning of said spindle from said second angular position to said first angular position results in radial movement of said locking member to an unlocking position, where said engaging tongue disengages from said driving member and said engaging groove so as to permit turning of said handle.