Stopper mechanism for trunk lid and a method for controlling rotational movement of trunk lid

A method for controlling rotational movement of a trunk lid configured to slow down rotational speed of the trunk lid during opening action of the trunk lid of a vehicle so as to stop rotational movement of the trunk lid without causing a bounce at its fully open position, comprising:

• providing a trunk lid stopper mechanism comprising:
• a hinge arm for supporting opening and closing action of the trunk lid, a first end of the hinge arm is fixed to the trunk lid and a second end of the hinge arm is rotatably connected to a hinge bracket provided to a vehicle body,
• torsion bars for exerting biasing force necessary for opening the trunk lid, and
• a link arm having bifurcated parts at a first end for interposing the hinge arm for transmitting the biasing force created by the torsion bars to the hinge arm, said biasing force is received at a second end of the link arm,
• the hinge arm is provided with a stopper member that imposes a braking force to trunk lid rotational movement and stops the trunk lid at the fully open position of the trunk lid, and
• the stopper member is provided with tapered surfaces that impose a braking force to relative rotation between the hinge arm and the link arm by being forced into a gap between the bifurcated parts of the link arm when the trunk lid is rotated toward the fully open position, and is provided with a stopper surface that stops relative rotation between the hinge arm and the link arm by abutting to the link arm when the trunk lid reaches the fully open position.