| CPC E05F 15/635 (2015.01) [E05Y 2900/531 (2013.01)] | 8 Claims |

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1. A door system for opening and closing an opening for entrance and exit of a sensor for vehicles, the door system comprising:
a housing configured to accommodate the sensor for vehicles therein and having an opening for entrance and exit of the sensor;
a door configured to slide along a guide groove provided on the housing to open and close the opening;
a door link unit configured to slide the door; and
a gear unit configured to transmit power of an actuator to the door link unit,
wherein the gear unit includes:
a first gear unit including a first shaft connected to the actuator and a first gear provided on the first shaft; and
a second gear unit including a second shaft disposed in parallel with the first shaft and a second gear provided on the second shaft and engaged with the first gear; and
wherein the door link unit includes a pair of guide links, one ends of which are rotatably connected to one side and the other side of a bottom surface of the door and the other ends of which are provided with sliding pins and connected to a sliding groove provided in a lower portion of the housing, a connecting link having one end and the other end rotatably connected to the other ends of the pair of guide links, a first door driving link having one end connected to the second gear and rotating together with the second gear, and a second door driving link having one end rotatably connected to the other end of the first door driving link and the other end rotatably connected to the connecting link.
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