Device for opening and closing damper using knob of air vent

A device for opening and closing a damper using a knob of an air vent in a vehicle, the device comprising:

• a wing knob coupled to a horizontal wing mounted in an outlet of an air duct such that the wing knob is slidably movable on the horizontal wing;
• a first rack gear formed on a rear surface of the wing knob;
• a transfer gear body meshing with the first rack gear and rotatably mounted on upper and lower vertical wing support frames;
• a cam gear coaxially and rotatably connected to a lower portion of the transfer gear body, the cam gear configured to angularly rotate while a user linearly moves the wing knob coupled to the horizontal wing in one direction or the other;
• a slider mounted to a bottom surface of the air duct such that the slider is movable in a forward or backward direction on the bottom surface of the air duct, wherein the slider moves forward or backward while contacting the cam gear at a time of rotation of the cam gear;
• second rack gears formed at both side surfaces of the slider;
• and
• damper gears meshing with the second rack gears and rotatably mounted on the bottom surface of the air duct,
• wherein the damper is coaxially connected to the damper gears and disposed in the air duct, and wherein a rotation shaft of the transfer gear body penetrates through the upper and lower vertical wing support frames so as to be coaxially connected to a central point of rotation of the cam gear;
• and
• wherein the damper may be opened or closed by moving the wing knob linearly along the horizontal wing in one direction or the other.