| CPC A63F 13/24 (2014.09) | 11 Claims |

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1. A control assembly, comprising:
two controllers; and
a retractable and foldable mechanism comprising a retractable part and two pivot joints, wherein the two pivot joints are respectively pivotally connected to two opposite ends of the retractable part, the two controllers are respectively pivotally connected to the two pivot joints so that the two controllers are movably connected to the retractable part via the two pivot joints, respectively;
wherein each of the two pivot joints have a first side and a second side located opposite to each other, the first sides of the two pivot joints are respectively pivotally connected to the two opposite ends of the retractable part, and the second sides of the two pivot joints are respectively pivotally connected to the two controllers.
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