Vehicle Headrest Folding Device

A headrest folding device comprising:

• a main bracket, being installed in one of a seat and a headrest, and including:
• a front plate;
• a left plate;
• and
• a right plate;
• a stay being installed in another of the seat and the headrest;
• an upper latch, being supported by the left and right plates, being rotatable on the left and right plates due to a hinge part, and wherein a horizontal bar of the stay is fixed to the upper latch;
• a twist coil spring applying an elastic force to the stay in a folding direction toward the main bracket;
• a locking sliding member, being vertically slidably installed in the main bracket, and locking the upper latch in an unfolding direction;
• a pulling member pulling the locking sliding member in a downward direction to release locking;
• and
• a return spring configured to return the locking sliding member in the main bracket,
• wherein the locking sliding member includes:
• a lifting slider receiving an elastic force from the return spring;
• a locking bar being locked in a state in which the locking bar supports the lifting slider and is positioned directly under locking grooves formed on a lower surface of the upper latch;
• and
• a guide portion guiding the locking bar to be movable upward or downward with respect to the main bracket.