Headrest

A headrest comprising:

• a stay having left and right legs;
• a headrest main body attached to the stay and able to rotate in a front-rear direction;
• an under-cover attached to the headrest main body from below, defining a bottom surface of the headrest main body,
• a pair of elongated holes made in the under-cover of the bottom surface of the headrest main body, extending in the front-rear direction and spaced apart in a left-right direction and guiding the legs of the stay, thereby allowing the under-cover to rotate in the front-rear direction;
• and
• a pair of closing members arranged on the under-cover, covering the elongated holes, respectively, and able to move on the under-cover in the front-rear direction,
• wherein each closing member includes a main plate and a sub-plate, both arranged on the under-cover, with the main plate lying above the sub-plate, the main plate has an insertion hole guiding one leg of the stay and moves in the front-rear direction as the main plate is rotated, and the sub-plate is provided, overlapping the main plate, and is able to move as the main plate moves;
• each leg of the stay extends in the up-down direction through not only the elongated hole made in the under-cover, but also the insertion hole of the main plate;
• and
• an auxiliary elongated hole is made in the sub-plate, each leg of the stay extends through the auxiliary elongated hole,
• the main plate and the sub-plate move in the front-rear direction as the headrest main body is rotated, while covering and closing, respectively, the auxiliary elongated hole made in the sub-plate and the elongated hole made in the under-cover,
• the main plate has restricting slits,
• the sub-plate has restricting projections protruding from the sub-plate and loosely fitted in the restricting slits, respectively, and
• the restricting slits and the restricting projections guide the main plate on the sub-plate and restrict a motion of the main plate on the sub-plate.