Structure for preventing gear shift lever from moving when rear-end collision occurs

A structure for preventing a gear shift lever from moving during a rear-end collision, the structure comprising:

• a case mounted on the gear shift lever and including a sliding groove, wherein a bottom side of the sliding groove opens along a longitudinal direction of the case;
• a lever including one end pivotally coupled to the case and another free end spaced from the one end, the lever being rotatable within and below the sliding groove;
• a ball supported on the lever;
• a spring coupled to the lever so that elastic force biases the lever into the sliding groove;
• and
• a protruding portion configured to rotate with the gear shift lever, the protruding portion being mounted separate from the gear shift lever and positioned below the free end of the lever;
• wherein the ball is configured to move toward the free end of the lever during a rear-end collision to rotate the lever downward and lock the free end of the lever against the protruding portion to block movement of the gear shift lever.