Patent ID: 8430089

Claim:
A heating cooker, comprising: a body having a cooking chamber defined therein; a door hingably mounted to the body to open and close the cooking chamber; a door holder positioned in the body to hold the door and keep the cooking chamber closed by the door; and a hinge part connected between the door and the body to guide rotation of the door such that when the door is released from the door holder, the door automatically opens, wherein the hinge part comprises a bracket positioned at a lower end of the body and having a sloped surface formed thereon; a hinge case positioned in the door; at least one coupling shaft extending through the bracket and hinge case to rotatably connect the bracket and the hinge case; a slide member slidably positioned in the hinge case and having at least one slit formed therein to accommodate the at least one coupling shaft; a spring fixed at one end to the hinge case and at the other end to the slide member; and at least one roller positioned in the slide member so as to be brought into rolling contact with the sloped surface to guide movement of the roller to allow automatic opening of the door via rotation.