Abstract: 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.

Abstract: A flexible wearable device includes a flexible body, a speaker, an earpiece, a sensor, and a control unit. The flexible body can be in a worn state in which a bending angle of the flexible body is not less than a predetermined angle, and in a flattened state in which the bending angle of the flexible body is less than the predetermined angle. When the sensor senses that the flexible body is in the worn state, the control unit controls the earpiece to be off and controls the speaker to be on or as a default sound generator, and when the sensor senses that the flexible body is in the flattened state, the control unit controls the earpiece to be on or as the default sound generator, and controls the speaker to be off.

Abstract: A flexible wearable device includes a flexible body, a speaker, an earpiece, a sensor, and a control unit. The flexible body can be in a worn state in which a bending angle of the flexible body is not less than a predetermined angle, and in a flattened state in which the bending angle of the flexible body is less than the predetermined angle. When the sensor senses that the flexible body is in the worn state, the control unit controls the earpiece to be off and controls the speaker to be on or as a default sound generator, and when the sensor senses that the flexible body is in the flattened state, the control unit controls the earpiece to be on or as the default sound generator, and controls the speaker to be off.

Abstract: 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.

Abstract: 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.