Door Lock

A door lock adapted to be mounted on a door, the door lock comprising:

• an inner door assembly mounted inside the door, configured to lock the door, and comprising:
• a locking assembly casing mounted inside the door;
• and
• an indoor doorknob assembly connected to the inner door assembly and comprising:
• an indoor handle pivotally mounted on the door;
• a protecting tube extending into the locking assembly casing and connected to the indoor handle, thereby capable of rotating along with the indoor handle;
• a positioning resilient component mounted on the protecting tube, located in the locking assembly casing, and configured to switch the door lock between a locked state and an unlocked state;
• a controlling component movably mounted in the indoor handle and comprising:
• a pressed end extending out of the indoor handle and away from the door;
• a controlling end opposite the pressed end, and extending out of the indoor handle and into the locking assembly casing of the inner door assembly;
• and
• a recess located in the locking assembly casing and selectively receiving the positioning resilient component;
• a reset resilient component connected to the controlling component and configured to drive the controlling component to protrude out of the indoor handle;
• an outdoor doorknob assembly connected to the inner door assembly;
• the indoor doorknob assembly and the outdoor doorknob assembly located on two opposite sides of the door respectively;
• wherein when the controlling component is pressed into the indoor handle, the door lock is in the locked state and the positioning resilient component is received in the recess of the controlling end;
• then, when the indoor handle is pivoted, the positioning resilient component departs from the recess and the reset resilient component drives the controlling component to move out of the indoor handle, thereby driving the door lock back to the unlocked state.