SHELF SUPPORT DEVICE AND COOKING APPLIANCE WITH THE SAME
FIG9 is a diagram illustrating a variation state of an elastic force acting between the rail and the wheel
According to the present embodiment, the resistance force is provided by the elastic force that is generated at the elastic support member 175. That is, the elastic support member 175 provides an elastic force to pressurize the second wheel 165 in a direction in which the gap between the first wheel 160 and the second wheel 165 is narrowed, and, as shown in FIG9, as the thickness of the rail 120 becomes thicker such that the gap between the first wheel 160 and the second wheel 165 increases, a magnitude of the elastic force, which acts as described above, increases. Further, the elastic force increased as described above acts as a greater force to narrow the gap between the first wheel 160 and the second wheel 165, and thus a greater resistance force acts to the support unit 150.
diagram
30
oven
121
160
wheel wheels
123
lower surface portion
100
shelf support device
9
item
190
gliding supporter
10
main body
175
elastic support member
165
second wheel second wheels
150
support unit support units
120
rail rails
['2. The shelf support device of claim 1, wherein the support unit (150) includes: a first wheel (160) disposed over the rail (120) and provided to roll along the movement path formed by the upper surface portion (121); a second wheel (165) disposed below the first wheel (160) by interposing the rail (120) and provided to roll along the movement path formed by the lower surface portion (123); and moving members (170,180,190) at which the first wheel (160) and the second wheel (165) are installed and configured to be moved in synchronization with movements of the first wheel (160) and the second wheel (165).', '4. The shelf support device of claim 2 or 3, wherein the support unit (150) further include an elastic support member (175) configured to elastically support at least one of the first wheel (160) and the second wheel (165) to tightly contact the first wheel (160) and the second wheel (165) to the rail (120), and the elastic support member (175) provides an elastic force for pressurizing at least one of the first wheel (160) and the second wheel (165) to narrow a gap between the first wheel (160) and the second wheel (165).', '10. The shelf support device of any one of claims 2 to 9, wherein the moving members (170,180,190) include: a wheel frame (170) at which the first wheel (160) and the second wheel (165) are installed, and configured to be moved in synchronization with movements of the first wheel (160) and the second wheel (165); a guide rail part (180) formed to have a length extending in the forward and backward directions and coupled to a wheel plate; and a gliding supporter (190) on which the shelf (30a) is mounted over the gliding supporter (190) and installed to be slidable in a length direction of the guide rail part (180).', '13. A cooking appliance comprising: a main body (10) at which a cooking chamber (31) is formed, a shelf (30a) provided to be installed at the cooking chamber (31), and a shelf support device (100) according to any one of claims 1 to 12 provided at the cooking chamber (31) and configured to support the shelf (30a).']