Device for opening and closing charging door

1. A device for opening or closing a charging door, the device comprising:

a rail housing including a charging hole;

an actuator configured to provide a driving force; and

the charging door engaged to the actuator and configured to be selectively movable on the charging hole through a portion of the charging hole according to the driving force received from the actuator,

wherein the rail housing includes a guide rail formed on a surface of the rail housing along the charging hole in a longitudinal direction of the rail housing, wherein the charging door is movable along the guide rail,

wherein the guide rail includes:

a pivoting guide section curved in a curvature, wherein the charging door is configured to pivot and move along the pivoting guide section; and

a linear guide section formed to extend linearly from a distal portion of the pivoting guide section, wherein the charging door is configured to linearly move along the linear guide section,

wherein the device further includes a guide roller coupled to the charging door, slidably engaged to the guide rail and configured to move along the guide rail,

wherein the actuator is engaged to a first end portion of the guide roller and the driving force of the actuator is provided to the first end portion of the guide roller,

wherein the charging door is coupled to a second end portion of the guide roller and moved with the guide roller along the guide rail,

wherein the device further includes a rack gear coupled to the first end portion of the guide roller and a pinion connected to the actuator and engaged with the rack gear,

wherein the rack gear is aligned along the linear guide section,

wherein the rack gear is moved according to a rotational driving of the pinion, and

wherein a shaft of the pinion includes a plurality of teeth along an entire length of the shaft of the pinion, and the entire length of a shaft direction of the pinion engaged with the rack gear is formed to be greater than a length of a width direction of the rack gear so that the rack gear is moved in the width direction while being moved in the longitudinal direction during the movement of the rack gear along a path of the pivoting guide section.

2. The device of claim 1 , wherein the charging door is configured to be concealed and moved in the charging hole along the guide rail according to the driving force received from the actuator in a state of being closed to open the charging hole.

3. The device of claim 1 , wherein the pivoting guide section is formed in an arc shape from the charging hole toward a charging port to form the curvature.

4. The device of claim 1 , further including a pair of brackets connected to the rail housing,

wherein the rack gear is engaged to the pinion between the brackets so that the rack gear is movable between the brackets.

5. The device of claim 1 ,

wherein a first pin is connected to an upper end portion of the charging door and slidably coupled to a first guide slot of the railing housing, and

wherein a second pin is connected to a lower end portion of the charging door and slidably coupled to a second guide slot of the rail housing.

6. The device of claim 1 ,

wherein first and second guide rails are formed on a surface of the rail housing; and

wherein first and second guide rollers are provided on the first and second guide rails, respectively,

wherein a first pin is connected to an upper end portion of the charging door and slidably coupled to the first guide roller, and

wherein a second pin is connected to a lower end portion of the charging door and slidably coupled to the second guide roller.

7. The device of claim 1 ,

wherein first and second guide rails are formed on a surface of the rail housing; and

wherein first and second guide rollers are provided on the first and second guide rails, respectively,

wherein a first pin is connected to an upper end portion of the charging door and slidably coupled to a first guide slot formed on the first guide rail, and

wherein a second pin is connected to a lower end portion of the charging door and slidably coupled to a second guide slot formed on the second guide rail.

8. The device of claim 1 ,

wherein a first pin is connected to an upper end portion of the charging door and slidably coupled to a first guide slot formed on the rail housing, and

wherein a second pin is connected to a lower end portion of the charging door and slidably coupled to a second guide slot formed on the rail housing.

9. The device of claim 1 ,

wherein the rail housing is formed in plural to include rail housings mounted on first and second internal sides of the charging hole;

wherein the guide rail is formed in plural to include first and second guide rails having a same guide path and formed on a front surface and a rear surface of each of the rail housings; and

wherein first and second guide rollers are provided on the first and second guide rails, respectively and coupled to an upper end portion and a lower end portion of the charging door, respectively.

10. The device of claim 1 , wherein a charging information portion is provided at a rim portion of the rail housing.

11. The device of claim 1 , further including:

a pin connected to the charging door, wherein a distal end of the pin is slidably coupled to the portion of the rail housing;

the rack gear coupled to an end of the pin; and

the pinion connected to the actuator and engaged with the rack gear;

a pair of brackets connected to the rail housing,

wherein the rack gear is engaged to the pinion between the brackets so that the rack gear is movable between the brackets.

12. The device of claim 11 , wherein the rail housing includes a guide slot to which the distal end of the pin is slidably coupled.

13. The device of claim 11 ,

wherein the guide roller is rotatably mounted on the pin, and

wherein the rail housing includes the guide rail to which the guide roller is slidably mounted.

14. The device of claim 11 ,

wherein the guide roller is rotatably mounted on the pin,

wherein the rail housing includes the guide rail to which the guide roller is slidably mounted, and

wherein the guide rail includes a guide slot to which the distal end of the pin is slidably coupled.