Container

Problem to be solved: To easily and safely assemble and fold it. [Solution] a rotary connector 7 includes a first connection member 71 fixed and attached to a lower sidewall 62, a second connection member 73 fixed and attached to an upper sidewall 61, and a rotary member 72 rotatably connected to the first connection member 71 and rotatably connected to the second connection member 73, A first contact part 722 provided on the rotating member 72 is interposed between the upper sidewall part 61 and the lower sidewall part 62 to form a gap S between the upper sidewall part 61 and the lower sidewall part 62. Selected drawing: Figure 1