Patent ID: 8381927

Claim:
A container comprising: a container main body having a loading space formed therein to load freight therein; a door opening/closing a freight doorway formed on one side of the container main body and including a first door of which one side is hinge-engaged with the container main body by a first hinge portion, and a second door of which one side is hinge-engaged with the other side of the first door by a second hinge portion; a slide rotation portion comprising: a slide rail provided on the container main body; a movement member connected to the second door to slidably move along the slide rail; a link member connected to the movement member and an inner side surface of the second door to make the door rotate at 0 to 270 degrees around the first hinge portion; and a movement limit member connected between the movement member and one side of the link member to limit the movement of the link member; and a locking portion locking and unlocking the door with respect to the container main body, wherein the movement limit member comprises: a support pipe pivotably fixed at the movement member and having an empty space formed therein to accommodate a part of the link member; and an elastic body provided inside the support pipe to elastically pull the link member in an interior direction of the support pipe, wherein a guide groove is formed on an inner surface of the support pipe along a length direction and a guide plate is installed in the guide groove to which an end portion of the part of the link member that is accommodated in the support pipe is fixed to guide the movement of the link member, and wherein the elastic body comprises: a first spring wound on an outer side of the link member and having one end that is fixed to the guide plate and the other end that is unfixed; and a second spring wound on the outer side of the link member, being apart from the first spring, and having one end that is unfixed and the other end that is fixed to the inside of the support pipe; wherein, when the door is opened, the second spring is in contact with the first spring and is compressed together with the first spring.