A rollable and flexible input device includes a drum, a reel received in the drum, an input device body connected to the reel, and a battery. The reel is rotated relative to the drum so that the input device body is in a rolled-up state or a stretched state. The reel defines a battery cavity, and the battery is disposed in the battery cavity.

A rollable and flexible input device includes a drum, a reel, an input device body connected to the reel, and a driving portion. The driving portion includes a spiral spring, a ratchet, a limit element, and a driving button. The spiral spring includes a first end fixed to the reel and a second end fixed to the drum. The ratchet is fixed to the reel. The limit element is fixed to the drum. The driving button is installed on the drum. The input device body drives the reel to rotate when being unrolled, so that the ratchet is clamped with the limit element, and the spiral spring is elastically deformed. When being rolled up, the driving button presses against the limit element to release the ratchet, and the spiral spring restores to drive the reel to retract, so that the reel retracts the input device body.

A rollable and flexible input device includes a drum, a reel received in the drum, an input device body connected to the reel, and a battery. The reel is rotated relative to the drum so that the input device body is in a rolled-up state or a stretched state. The reel defines a battery cavity, and the battery is disposed in the battery cavity.