Vehicle door glass assembly and method for regulating position of door glass

1. A vehicle door glass assembly capable of regulating a position of a door glass, comprising:

a door frame forming a vehicle door;

a garnish joined to a periphery of the door frame to finish an outer side face of the door frame;

the door glass installed so as to be raised or lowered within the door frame;

a glass run assembled to the door frame to support a periphery of the door glass; and

a slider installed in an inner side face of the door glass to guide a raising or lowering movement of the door glass,

wherein the garnish is provided with a restraint device configured to prevent the slider from moving in a longitudinal direction of a vehicle,

wherein the restraint device is a fixing protrusion protruding from a position adjacent to the door glass in the garnish so as to direct toward an inside of the vehicle and restraining one side of the slider;

wherein the glass run comprises a fastening part to be fastened to the door frame and a body part formed integrally with the fastening part, and wherein the fastening part is made of a material harder than a material of the body part; and

wherein an airtight part extends from the fastening part along the outer side of the vehicle and contacts the end portion of the door glass, and a fixing hole through which the fixing protrusion penetrates is formed in the airtight part.

2. The vehicle door glass assembly according to claim 1 , wherein an end portion of the slider is formed with a latching portion protruding from the slider so as to direct toward an outside of the vehicle, and the fixing protrusion is configured to prevent the latching portion from being separated from the fixing protrusion.

3. The vehicle door glass assembly according to claim 1 , wherein the fixing protrusion is formed in a partial section along a height direction of the vehicle.

4. The vehicle door glass assembly according to claim 3 , wherein the fixing protrusion is formed within a predetermined length from a top end of the vehicle door.

5. The vehicle door glass assembly according to claim 3 , wherein the slider is formed at an end portion of the door glass in a partial section along the height direction of the vehicle.

6. The vehicle door glass assembly according to claim 5 , wherein the slider is formed within a predetermined length from a top end of the door glass.

7. The vehicle door glass assembly according to claim 1 , wherein the body part is formed in a “C” shape so as to accommodate the slider while allowing the slider to move.

8. The vehicle door glass assembly according to claim 1 , wherein one side of the fastening part is provided with an airtight rib extended toward the slider and connected to the slider.

9. The vehicle door glass assembly according to claim 1 , wherein an end portion of the body part, which is joined to the door trim, comprises an extension part extending from the body part to the inner side face of the door glass to support the inner side face of the door glass.

10. The vehicle door glass assembly according to claim 9 , wherein the extension part supports the door glass outside the portion where the slider is joined to the door glass.

11. The vehicle door glass assembly according to claim 10 , wherein the extension part is formed in a convex shape toward the door glass.

12. The vehicle door glass assembly according to claim 1 , wherein the door glass and the garnish are assembled without a stepped portion therebetween.

13. The vehicle door glass assembly according to claim 1 , wherein the slider is installed inside the glass run along a raising and lowering direction of the door glass.