Hinge assembly for trunk lid of vehicle

A hinge assembly for a trunk lid of a vehicle, comprising:

• a hinge arm (110) configured to be coupled to the trunk lid (T);
• a hinge bracket (120) configured to be coupled to a vehicle body and having a hinge shaft (121), the hinge arm (110) being rotatably coupled to the hinge bracket (120);
• a torsion bar (130) configured to be coupled to the hinge arm (110) and to provide an elastic force to the hinge arm (110) in an opening direction;
• and
• a cushion assembly (140) provided at one end of the hinge arm (110) adjacent to the hinge shaft (121) and configured to adjust a rotation speed of the hinge arm (110) in response to the elastic force of the torsion bar (130),
• wherein the cushion assembly (140) comprises:
• a pin holder (142) provided with a guide groove (142a) at an upper end thereof and arranged to be movable vertically inside the hinge arm (110);
• a roller assembly (141) spaced downward from the guide groove (142a) by a predetermined distance and configured to be coupled to the pin holder (142);
• a spring holder (144) arranged spaced downward from the pin holder (142) by a predetermined distance and configured to be fixedly installed inside the hinge arm (110);
• and
• a damping spring (143) configured to elastically support between the pin holder (142) and the spring holder (144),
• wherein the guide groove (142a) is formed to extend a predetermined length downward from the upper end of the pin holder (142), is coupled to the hinge shaft (121), and is formed to guide a vertical movement of the pin holder (142) by the hinge shaft (121),
• wherein the cushion assembly (140) further comprises a guide pin (145) arranged to pass through a center of the damping spring (143), an upper end of the guide pin (145) being coupled to the pin holder (142) and a lower end thereof being coupled to the spring holder (144) so as to be slidingly movable vertically, and
• wherein the spring holder (144) has a guide pin retaining hole (144c) formed to extend vertically for the lower end of the guide pin (145) to be retained thereto.