Patent attributes
A connecting mechanism includes a mounting unit, a substrate transfer port, a door closing or opening the substrate transfer port, a coupling mechanism coupling a cover of the substrate container mounted on the mounting unit with the door, and a gas exhaust/purge unit. First, second and third seal members respectively seal a first space between a peripheral portion of the substrate transfer port and the door, a second space between the door and the cover of the substrate container, and a space between the peripheral portion of the substrate transfer port and the main body. The gas exhaust unit exhausts the first space and a second space. The purge gas, which has been supplied into the substrate container by the gas exhaust/purge unit, is supplied into the first and the second space by allowing the gas exhaust unit to exhaust the first and the second space.
