Door locking device and method for preventing door from opening during side collision

A method for preventing a door from opening during a side collision of a vehicle having a door locking device including a base having an outside lever which opens and closes the door of the vehicle and a door latch operated by the outside lever, a button connected with a blocking lever which restricts an operation of the door latch, and a rotator mounted in the base and rotating by the button, the method comprising steps of:

• pressing, by the button, the rotator due to external shocks;
• separating a long rib formed in the rotator from a long groove formed in the base;
• rotating the rotator while an upper end of the long rib sliding along a continuous threaded rod formed on a bottom surface of the button;
• and
• restricting the button to the rotator while the upper end of the long rib is fastened with a short groove formed in the base and the blocking lever is interposed between an extending part of the outside lever and the door latch.

A door locking device for preventing a door from opening during a side collision, the door locking device comprising:

• a base having an outside lever opening and closing the door of a vehicle and a door latch operated by the outside lever;
• a button connected with a blocking lever which restricts an operation of the door latch;
• and
• a rotator mounted in the base to rotate by the button,
• wherein the rotator moves in a length direction in response to a movement of the button in a length direction,
• the rotator rotates along an inner bottom surface which is formed at an inner side of the base, and
• the rotator is fixed and formed over the inner bottom surface.