Abstract: A cup holder including a case for receiving a cup, having an opening and a bottom opposite to the opening; a rotational arm including a first arm member rotatably connected to the case, and a second arm member rotatably connected to the first arm member and having a retaining member for holding the cup; and a platform slidably arranged in the case to move between a first position in which the platform is positioned at the opening of the case, and a second position in which the platform is positioned at the bottom of the case, the platform an abutting portion extending downwardly therefrom to abut against the first arm member. When the platform moves from the first position to the second position, the abutting portion abuts against the first arm member to rotate the rotational arm toward the case and the retaining member is disposed inside the case.

Abstract: A cup holder including a case for receiving a cup, having an opening and a bottom opposite to the opening; a rotational arm including a first arm member rotatably connected to the case, and a second arm member rotatably connected to the first arm member and having a retaining member for holding the cup; and a platform slidably arranged in the case to move between a first position in which the platform is positioned at the opening of the case, and a second position in which the platform is positioned at the bottom of the case, the platform an abutting portion extending downwardly therefrom to abut against the first arm member. When the platform moves from the first position to the second position, the abutting portion abuts against the first arm member to rotate the rotational arm toward the case and the retaining member is disposed inside the case.