Vehicle door hinge apparatus

A vehicle door hinge apparatus for a door of a vehicle comprising:

• a door link having a first end pivotably and slidably connected to a vehicle body side and a second end hinged to a door side;
• a vehicle body link having a first end pivotably and slidably connected to the door side and a second end hinged to the vehicle body side;
• a door link guide positioned on the vehicle body side and configured to guide sliding of the first end of the door link;
• a vehicle body link guide positioned on the door side and configured to guide sliding of the first end of the vehicle body link;
• and
• an actuator connected to the first end of the door link and configured to move the first end of the door link to allow the first end of the door link to slide along the door link guide;
• wherein the door link and the vehicle body link intersect at an intersection point, the intersection point is hinged, and the door link and the vehicle body link are configured to perform, when the door of the vehicle is opened, a scissors motion around the hinged intersection point;
• wherein the actuator comprises an arm and a gear, the arm of the actuator is connected to the first end of the door link and the gear of the actuator is connected to the arm to move the arm through rotation;
• and
• wherein, an operation part is located at an upper portion or a lower portion of the gear and includes a shaft connected to a switch part and a cam provided at an end of the shaft, when an emergency situation occurs, the gear is separated from the arm through the cam of the operation part, and a connection between the gear and the arm is released such that a manual operation is performable, and wherein, when the emergency situation ends, the gear is connected to the arm again through the cam of the operation part such that the manual operation is not performable.