Shelf support device and cooking appliance with the same

A shelf support device comprising:

• a rail that extends in a forward direction of the shelf support device and in a backward direction of the shelf support device and that has a front end portion located vertically above a rear end portion, the rail including an upper surface and a lower surface that define a movement path configured to guide movement of a shelf in the forward direction and the backward direction, the movement path being inclined upward to the front end portion;
• a fixing plate at which the rail is configured to be installed;
• a support unit that is configured to seat the shelf at an upper portion of the support unit, that is configured to couple to the rail, and that is configured to move along the movement path defined by the rail;
• and
• a movement restriction part configured to limit movement of the support unit outside of a set position,
• wherein the support unit is further configured to:
• based on the support unit moving in the forward direction along the movement path, move together with the shelf in an upward direction of the shelf support device, and
• based on the support unit moving in the backward direction along the movement path, move together with the shelf in a downward direction of the shelf support device,
• wherein the support unit includes:
• a first wheel configured to be positioned vertically above the rail and configured to roll along the upper surface of the rail,
• a second wheel located vertically below the first wheel and configured to roll along the lower surface of the rail, the rail being located between the first wheel and the second wheel, and
• a moving member to which the first wheel and the second wheel are coupled, the moving member being configured to move along the movement path based on movement of at least one of the first wheel or the second wheel,
• wherein the movement restriction part includes:
• a stopper that protrudes from a side of the support unit and that faces the fixing plate,
• a first protrusion that protrudes from a side of the fixing plate, that faces the support unit, and that is configured to, based on interfering with the stopper, restrict movement of the support unit from a first position in the backward direction, and
• a second protrusion that protrudes from the side of the fixing plate, that faces the support unit, and that is configured to, based on interfering with the stopper, restrict movement of the support unit in the forward direction from a second position that is located forward of the first position, and
• wherein the second protrusion is located forward of the first protrusion.

A cooking appliance comprising:

• a body that defines a cooking chamber;
• a shelf located in the cooking chamber, and
• a shelf support device located at the cooking chamber and configured to support the shelf,
• wherein the shelf support device includes:
• a rail that extends in a forward direction of the cooking chamber and in a backward direction of the cooking chamber and that has a front end portion located vertically above a rear end portion, the rail including an upper surface and a lower surface that define a movement path configured to guide movement of the shelf in the forward direction and the backward direction, the movement path being inclined upward to the front end portion, and
• a support unit that is configured to seat the shelf at an upper portion of the support unit, that is configured to couple to the rail, and that is configured to move along the movement path,
• wherein the support unit is further configured to:
• based on the support unit moving in the forward direction along the movement path, move together with the shelf in an upward direction of the cooking chamber, and
• based on the support unit moving in the backward direction along the movement path, move together with the shelf in a downward direction of the cooking chamber, and
• wherein the support unit includes:
• a first wheel configured to be positioned vertically above the rail and configured to roll along the upper surface of the rail,
• a second wheel located vertically below the first wheel and configured to roll along the lower surface of the rail, the rail being located between the first wheel and the second wheel,
• a moving member to which the first wheel and the second wheel are coupled, the moving member being configured to move along the movement path based on movement of at least one of the first wheel or the second wheel, and
• an elastic support member that is configured to support at least one of the first wheel or the second wheel, that is configured to enable the first wheel and the second wheel to contact the rail, and that is configured to provide elastic force to press at least one of the first wheel or the second wheel toward another of the first wheel or the second wheel.