Drive mechanism capable of dealing with gas sterilization

A drive mechanism, comprising:

• a movable block;
• a drive unit configured for moving the movable block;
• a guide mechanism configured for guiding the movable block in a predetermined direction;
• a partition wall isolating the movable block, the drive unit, and the guide mechanism from an external environment;
• a movable platform provided outside the partition wall and at a position facing the movable block via the partition wall so as to cover at least a part of the partition wall and be movable along the partition wall;
• a rolling body rollably attached to a surface of the movable platform facing the partition wall;
• a first magnet coupling mechanism including magnets attracting each other and provided on first surfaces of the movable block and the movable platform, the first surfaces mutually facing each other via the partition wall;
• and
• a second magnet coupling mechanism including magnets attracting each other and provided on second surfaces of the movable block and the movable platform, the second surfaces being orthogonal to the first surfaces and facing each other via the partition wall,
• wherein
• the movable platform is configured to move on a trajectory guided by the partition wall by following a movement of the movable block,
• the drive mechanism further includes biasing magnet units provided with magnetic poles repelling each other in a direction of reinforcement of attractive force of the first magnet coupling mechanism and/or the second magnet coupling mechanism,
• the biasing magnet units are provided on third surfaces of the movable block and the movable platform, the third surfaces being different from the first and second surfaces and facing each other via the partition wall, and
• the third surfaces of the movable block and the movable platform where the biasing magnet units are disposed are disposed to be inclined at a predetermined angle with respect to the second surfaces of the movable block and the movable platform where the second magnet coupling mechanism is disposed.

A drive mechanism comprising:

• a movable block;
• a drive unit moving the movable block;
• a guide mechanism guiding the movable block in a predetermined direction;
• and
• a partition wall isolating the movable block, the drive unit, and the guide mechanism from an external environment, wherein
• a substantially U-shaped movable platform is disposed so as to cover the partition wall at a position facing the movable block in the external environment defined by the partition wall,
• a first drive magnet unit is provided on a first surface of the movable block,
• a second drive magnet unit is provided on a second surface of the movable block orthogonal to the first surface,
• a first biasing magnet unit is disposed on a surface of the movable block facing the surface where the second drive magnet is disposed,
• a first driven magnet unit is disposed on a surface of the movable platform facing the first drive magnet unit,
• a second driven magnet unit is disposed on a surface of the movable platform facing the second drive magnet unit,
• a second biasing magnet unit is disposed on a surface of the movable platform facing the surface where the second driven magnet unit is disposed and facing the first biasing magnet unit of the movable block,
• rolling bodies are rollably attached to the surfaces of the movable platform where the first and second driven magnet units are disposed,
• the first drive and driven magnet units and the second drive and driven magnet units have magnetic poles different from each other,
• the first biasing magnet unit and the second biasing magnet unit have the same magnetic poles, and
• the movable platform moves in a plane defined by the partition wall by following the movement of the movable block.