Door lock apparatus for a vehicle

A door lock apparatus for a vehicle comprising:

• a latch mechanism holding a door of the vehicle at a closed condition relative to a body of the vehicle;
• an inside open lever and an outside open lever activated in response to respective operations of a door handle provided inside the door and a door handle provided outside the door;
• a link member interposed between the latch mechanism and each of the inside open lever and the outside open lever and selectively operated between an unlock position and a lock position, the unlock position in which operations of the respective inside and outside open levers are transmitted to the latch mechanism, and the lock position in which the operations are not transmitted to the latch mechanism;
• a drive unit activated to switch a position of the link mechanism between the unlock position and the lock position;
• and
• a lock operation lever configured to transmit a driving power source of the drive unit to the link member and including an active lever operatively associated with the drive unit and a sub lever operatively associated with the link member, the sub lever configured to operate integrally with the active lever when the link member is switched to the lock position and to cooperate with the active lever via a biasing member when the link member is switched to the unlock position, the lock operation lever being an assembly containing the active lever, the sub lever and the biasing member.