Patent ID: 6947778

Claim:
A handheld electronic device, comprising: a first unit; a second unit slideably mounted with the first unit between an open position and a closed position; and a sliding mechanism, arranged between the first unit and the second unit in order to guide relative sliding between the first unit and the second unit, and the sliding mechanism comprising a pushing positioner in the first unit, and a sliding slot in the second unit, the pushing positioner comprising: a ball and a resilient element pushing the ball toward the slot, the ball having at least a portion engaging in the slot; a sleeve, having a first end and a second end opposite the first end, and an internal thread formed in an inner wall of the sleeve near the first end, wherein the ball is arranged in the sleeve, the ball having a diameter larger than a diameter of an opening of the second end to thereby allow the ball to partially protrude out of the second end, the resilient element being arranged in the sleeve and exerting a pushing force to the ball toward the second end; and a round plate received in the first end of the sleeve and threadedly engaging with the internal thread of the sleeve, the round plate engaging with the resilient element.