OnCollisionEnter: Collision takes also the parent tag

Hey everybody,

I have a problem with the methode CollisionEnter(Collision col). I have a player and if an enemy collides with him the game is over. A shield should protect the player a few secounds from colliding with the player. The shield object is a child of the player, but if the enemy hits the shield its also game over, although the shield hasnt the tag Player.

What can I do? Thank you for help, here is my code and a piece of my hierachy:

     void OnCollisionEnter (Collision col)
         {
                 collisioncount++;
                 if (col.transform.tag == "Player") {
                         
                         print ("Game over because hit enemy");
                         Guiandco go = guiforgo.GetComponent<Guiandco> ();
                         go.SendMessage ("GameOver", SendMessageOptions.DontRequireReceiver);
                         
                 }
 
         }