CASTER FOR CARRIER

A caster for a carrier for a carrier mounted on a lower surface of a carrier receiving part, includes: a base part mounted on a lower surface of the carrier receiving part; a body rotatably mounted on the base part based on a rotation shaft; a wheel mounted on the body; a restraining part mounted on the body and selectively restraining the wheel by pressing by the base part rotated when pressing the carrier receiving part down or inclining the carrier receiving part; and a first restoration spring provided between the base part and the body to restore the rotated base part to its original position, where a first shaft mounting hole in which the rotation shaft is mounted is formed in one side of the body and a fixing hole is formed in an upper surface of the other side of the body.