Structure of leg-rest

A structure of a leg-rest which is switchable at a front lower end of a seat between a receiving position where a support panel is folded on the seat and a deploying position where the support panel is drawn out to support a leg of a seated person, the structure comprising:

• a fixing bracket which is fixed to the seat;
• a rotary arm of which one end is rotatably connected to the fixing bracket;
• a base slider which is slidably coupled to the rotary arm in a longitudinal direction;
• an extending slider which is slidably coupled to the base slider in the longitudinal direction and mounted with the support panel;
• a rotary assist arm of which one end is separated from the rotary arm to be rotatably connected to the fixing bracket and the other end is rotatably connected to the base slider;
• and
• a sliding device which slides the rotary arm and the extending slider in opposite directions to each other from the base slider,
• wherein when the sliding device slides the rotary arm and the extending slider from the base slider in the opposite directions to each other, a movement of the extending slider is performed so that the support panel is switched between the receiving position and the deploying position due to a difference in trajectory between the rotary arm and the rotary assist arm.