Method for installing rotary locked structure of door lock

A method for installing a lock, the method comprising:

• pre-assembling a driving part an inner tube, and a shaft of a first unit, the driving part and inner tube being axially movable relative to each other but prevented from rotating relative to each other upon pre-assembly, a restriction unit of the inner tube engaging with a connection portion of the shaft to enable axial movement between the shaft and the inner tube while preventing relative rotation therebetween;
• and
• installing the first unit and a second unit onto a door panel, one of a driving column and a spindle of the second unit pushing the inner tube of the first unit upon installation to thereby disengage the restriction unit of the inner tube from the connection portion of the shaft and enable the shaft to rotate independently from the driving part.

A method for installing a lock, the method comprising:

• pre-assembling a driving part an inner tube, and a shaft of a first unit, the driving part and the shaft is prevented from rotating to each other upon pre-assembly by engaging a restriction unit of the inner tube with a connection portion of the shaft and engaging a positioning portion of the inner tube with a restriction portion of the driving part;
• and
• installing the first unit and a second unit onto a door panel, one of a driving column and a spindle of the second unit pushing the inner tube of the first unit upon installation to thereby disengaging the positioning portion of the inner tube from the restriction portion of the driving part and enable the shaft to rotate independently from the driving part.