Patent ID: 8330027

Claim:
A lid structure of a keyboard instrument, covering a keyboard and an operation panel disposed posterior to the keyboard in a free open-and-close manner, the lid structure of the keyboard instrument comprising: a front lid, disposed aside a player in a close state; a back lid, connected to a back of the front lid; a rotation shaft, disposed at a front portion of the back lid and a back portion of the front lid, and rotatably supporting the front lid relative to the back lid; a front engagement portion, connected to each of two sides of the front portion of the back lid; a back engagement portion, connected to each of two sides of a back portion of the back lid; a front guide portion, disposed in an instrument body, and engaged to the front engagement portion to guide a movement of the back lid along a back and forth direction; and a back guide portion, disposed posterior to the front guide portion, built in the instrument body, and engaged to the back engagement portion to guide the movement of the back lid along the back and forth direction.