Pop-up device of fuel door

1. A pop-up device of a fuel door, the pop-up device comprising:

the fuel door configured to be rotatably provided on one side of a vehicle body to open or close a fuel inlet and have a locking portion formed on an internal side thereof;

a cable housing configured to be disposed on an internal side of the fuel inlet and include a stopper connected to a cable; and

a catch configured to be formed on one end portion of the cable housing and open or close the fuel door by a reciprocating movement of a pop-up rod,

wherein the catch includes:

a catch housing of which an upper end portion is provided with an inclined portion having a predetermined angle;

the pop-up rod configured to be reciprocately disposed inside the catch housing; and

a pushing block configured to be formed to abut to a lower portion of the pop-up rod,

wherein an upper end portion of the pop-up rod is formed in a “T”-letter shape and one side of a lower end portion of the pop-up rod is provided with a protruding block locked by the stopper, and

wherein, when the cable is pulled, the stopper moves toward one side to release a position regulation of the protruding block and the pop-up rod is lifted by a spring force of a spring formed at a lower portion of the catch housing.

2. The pop-up device of the fuel door of claim 1 , wherein the upper end portion of the pop-up rod is inserted into the locking portion during a lowering operation to lock the fuel door and released from a coupling with the locking portion during a lifting operation to open the fuel door.

3. The pop-up device of the fuel door of claim 1 , wherein an upper surface of the pushing block is formed to be inclined at a same angle as the inclined portion.

4. The pop-up device of the fuel door of claim 1 , wherein a lower surface of the protruding block is formed in a plane perpendicular to a longitudinal direction of the pop-up rod.

5. The pop-up device of the fuel door of claim 1 , wherein a least one side of the protruding block is provided with a locking protrusion.

6. The pop-up device of the fuel door of claim 5 , wherein the locking protrusion is formed in the catch housing and is guided by a guide groove formed to be inclined at a predetermined angle thereof.

7. The pop-up device of the fuel door of claim 1 , wherein, when the protruding block is disposed on the inclined portion, the lower end portion of the pop-up rod and a lower surface of the protruding block are inclined to correspond to the predetermined angle of the inclined portion.

8. The pop-up device of the fuel door of claim 4 , wherein, when the protruding block is disposed on the inclined portion, the lower surface of the protruding block and an upper surface of the pushing block are face-to-face coupled with each other.

9. The pop-up device of the fuel door of claim 1 , wherein an upper portion of the inclined portion is provided with a sealing portion.