Patent ID: 8397929

Claim:
A flat rack container comprising: a base for loading goods; an end wall rotatably combined at each of two ends of the base by using a pivot; and an integral buffering apparatus for automatically controlling a flow rate of a fluid, the integral buffering apparatus comprising: a cylinder housing comprising a space for accommodating oil; a slider disposed in the space to be movable in a length direction of the cylinder housing and to divide the space into a first space and a second space; first oil channels and a second oil channel for connecting the first space and the second space to each other; a cylinder rod having a first end disposed outside the cylinder housing and a second end inserted into the space and combined with the slider; and a cylinder housing cap combined with the cylinder housing in order to seal the space of the cylinder housing, wherein, when the cylinder rod moves in one direction, the first oil channels are closed and the oil in the first space flows into the second space through the second oil channel, and wherein, when the cylinder rod moves in another direction, the first oil channels are open and the oil in the second space flows into the first space through the first oil channels and the second oil channel, wherein, in the integral buffering apparatus, one of the cylinder rod and the cylinder housing is combined with the base and the other of the cylinder rod and the cylinder housing is combined with the end wall in such a way that the cylinder rod moves in one direction when the end wall is folded, and moves in another direction when the end wall is unfolded.