Abstract: A tonneau cover device moves a tonneau cover, which is coupled to a hatchback door of a vehicle, between an extension position and a storage position. The tonneau cover device includes a detection unit and a controller. The detection unit detects whether a pre-operation for opening the hatchback door has been performed. The controller permits movement of the tonneau cover to the extension position when a courtesy switch, which is arranged in the vehicle, detects that the hatchback door is closed and the detection unit does not detect that the pre-operation has been performed. The controller restricts movement of the tonneau cover to the extension position when the courtesy switch detects that the hatchback door is closed and the detection unit detects that the pre-operation has been performed.

Abstract: A tonneau cover device moves a tonneau cover, which is coupled to a hatchback door of a vehicle, between an extension position and a storage position. The tonneau cover device includes a detection unit and a controller. The detection unit detects whether a pre-operation for opening the hatchback door has been performed. The controller permits movement of the tonneau cover to the extension position when a courtesy switch, which is arranged in the vehicle, detects that the hatchback door is closed and the detection unit does not detect that the pre-operation has been performed. The controller restricts movement of the tonneau cover to the extension position when the courtesy switch detects that the hatchback door is closed and the detection unit detects that the pre-operation has been performed.