Patent ID: 8322533

Claim:
A lid for a substrate storage container comprising: a locking mechanism, provided in the lid for opening and closing an opened front portion of a container body which stores a substrate of three sheets or less, for locking the lid fitted into the front portion of the container body, wherein the locking mechanism is supported by the lid which is substantially laterally long when viewed from the front, and includes a sliding body capable of sliding in inward and outward right-and-left directions thereof, an engaging claw supported so as to be projected to and retracted from in a vicinity of a through hole on a side wall of the lid, rotatably coupled with a tip end portion of the sliding body, projecting from the through hole of the lid and capable of interfering with an inner periphery of the front portion of the container body, a spring member that causes the sliding body to slide into outward right-and-left direction of the lid and thus causes the engaging claw to project from the through hole of the lid, and an operation hole provided on an end portion side of the sliding body and operated from the outside; wherein the operation hole of the sliding body is formed into a substantially circular shape and a part positioned on inward right-and-left direction side of the lid is formed into a linear, vertically flat portion, and when the lid is removed from the front portion of the container body, the sliding body is caused to slide in the inward right-and-left direction of the lid by inserting an operation pin to the operation hole of the sliding body so that the projecting engaging claw is retracted into the through hole of the lid; and wherein the operation pin includes a pin portion which is a substantially columnar shape and to be inserted into the operation hole of the sliding body, and a bulged portion formed on the pin portion and bulged outwards in a width direction and interferes with the operation port of the lid.