wherein the stopper extends through the hole portion when {HEAD ~ the cover} is in {TAIL ~ a closed position}, and moves through the notch portion in the direction away from the hole portion as the cover is moved in an open direction, such that the frictional force applied to the stopper gradually increases as the cover is moved in the open direction 
wherein the stopper extends through the hole portion when { HEAD ~ the cover } is in { TAIL ~ a closed position } , and moves through the notch portion in the direction away from the hole portion as the cover is moved in an open direction , such that the frictional force applied to the stopper gradually increases as the cover is moved in the open direction
OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD REL REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH