Isolator having a ball type operator

An isolator having a ball type operator comprising:

• an upper panel 31 on which a protected object is placed and having an upper rolling recess 33 on a bottom surface thereof;
• a lower panel 32 disposed on a floor corresponding to the upper panel 31 and having a lower rolling recess 34 on a top surface thereof, the lower rolling recess 34 facing the upper rolling recess 33 of the upper panel 31;
• and
• a ball operator 35 provided between the upper rolling recess 33 and the lower rolling recess 34 to roll between them,
• wherein
• at least the lower rolling recess 34 includes:
• a central rolling surface 36 formed on a central part of the lower rolling recess 33, 34;
• a peak-line 37 formed along an upper edge of the central rolling surface 36;
• an inflected rolling surface 38 formed around the peak-line 37, inflected with respect to the central rolling surface 36, and extending outward horizontally or downward from the peak-line 37;
• and
• a disengagement prevention wall 39 formed around an edge of the inflected rolling surface 38 and extending upward to prevent the ball operator 35 from disengaging.