1. A lid opening/closing mechanism, which is for attaching a lid to an opening of a case body to be openable and closable, and holding a distribution cable electrically connecting between the case body and the lid, comprising:a first member which is attachable to an attachment surface of the case body and slidable along the attachment surface; and
a second member of which one side is rotatable and attachable to the first member, and of which another side is fixed to the lid,
wherein the distribution cable is curved and held along the first member and the second member,
wherein the first member and the second member are an integrated plate member, and
wherein a thin part of which thickness is reduced is formed in a boundary between the first member and the second member.