Integral buffering apparatus for automatically controlling flow rate of fluid and flat rack container including the integral buffering apparatus

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;
• a pressing plate disposed at the second end of the cylinder rod and for closing the first oil channels,
• wherein the first oil channels and the second oil channel are formed in the slider, and
• wherein the slider is combined with the cylinder rod to be movable on the cylinder rod between a closing position for closing the first oil channels by using the pressing plate and an opening position for opening the first oil channels,
• wherein the cylinder rod, the pressing plate, and the stopper are integrally formed,
• wherein the slider is divided into two body pieces, and
• wherein a combining recess and a combining protrusion are respectively formed at two ends of each of the body pieces.