Door assembly and a cooking appliance therewith

A cooking appliance comprising:

• a main body having a cooking chamber;
• a hinge member disposed at a first lateral side of the main body;
• a door rotatably coupled to the hinge member and configured to open and close the cooking chamber;
• a latch mechanism provided in the door and configured to fix the door to the main body by engaging with the main body at a second lateral side of the main body;
• and
• a locking mechanism configured to fix the door to the main body at a different position from the latch mechanism, in a state where the cooking chamber is closed by the door fixed to the main body by the latch mechanism,
• wherein the locking mechanism provided in the door comprises a shaft configured to move to a fixing position, at which the shaft is coupled to the hinge member, or a releasing position, at which the shaft is released from the coupling state, by a user's pressing manipulation of the locking mechanism,
• wherein the locking mechanism comprises,
• a holder provided in the door, the holder comprising a predetermined space to accommodate the shaft;
• a locking protrusion protruded toward an inner circumferential surface of the holder from an outer circumferential surface of the shaft opposite to the inner circumferential surface of the holder;
• and
• an engaging protrusion provided in the inner circumferential surface of the holder and configured to engage with the locking protrusion at a first position or a second position, and
• when the engaging protrusion engages with the locking protrusion at the first position, the shaft is fixed at the fixing position, and
• when the engaging protrusion engages with the locking protrusion at the second position, the shaft is fixed at the releasing position,
• wherein an installation hole is vertically provided through an upper surface of the door to accommodate the holder therein,
• the holder is accommodated in the installation hole and fitted to the door, thereby coupling the door to the locking mechanism, and
• the locking mechanism is coupled to the upper area of the door and configured to integrally move with the door in the rotational direction of the door,
• wherein a projected portion is provided between the upper surface of the door and the hinge member, the protected portion being exposed from an inner circumferential surface of the door surrounding the installation hole toward the installation hole,
• the holder further comprises a first protrusion and a second protrusion that are each protruded from an outer circumferential surface of the holder, and
• the projected portion is fitted between the first protrusion and the second protrusion that are spaced apart from each other in the vertical direction and the vertical movement of the holder is restricted.

A cooking appliance comprising:

• a main body having a cooking chamber;
• a hinge member disposed at a first lateral side of the main body;
• a door rotatably coupled to the hinge member and configured to open and close the cooking chamber;
• a latch mechanism provided in the door and configured to fix the door to the main body by engaging with the main body at a second lateral side of the main body;
• and
• a locking mechanism configured to fix the door to the main body at a different position from the latch mechanism, in a state where the cooking chamber is closed by the door fixed to the main body by the latch mechanism,
• wherein the locking mechanism provided in the door comprises a shaft configured to move to a fixing position, at which the shaft is coupled to the hinge member, or a releasing position, at which the shaft is released from the coupling state, by a user's pressing manipulation of the locking mechanism,
• wherein the locking mechanism comprises,
• a holder provided in the door, the holder comprising a predetermined space to accommodate the shaft;
• a locking protrusion protruded toward an inner circumferential surface of the holder from an outer circumferential surface of the shaft opposite to the inner circumferential surface of the holder;
• and
• an engaging protrusion provided in the inner circumferential surface of the holder and configured to engage with the locking protrusion at a first position or a second position, and
• when the engaging protrusion engages with the locking protrusion at the first position, the shaft is fixed at the fixing position, and
• when the engaging protrusion engages with the locking protrusion at the second position, the shaft is fixed at the releasing position,
• wherein the shaft is movable in the holder, and at least portion of the shaft protrudes outside the holder at the fixing position to be coupled to the hinge member,
• wherein the shaft is coupled to the hinge member at a position spaced apart from the rotation center of the door in a centrifugal force direction.