Patent ID: 7874972

Claim:
A centrifuge, comprising: a housing; a rotor which is rotatable and to which a sample vessel containing a sample therein is attached; a rotation room chamber which defines a rotation room that is provided within the housing and houses the rotor therein; a lid capable of opening and closing the rotation room selectively; a locking mechanism which is configured by an engaging portion which is provided at one of the housing and the lid in order to lock the lid in a closed state and an engaged portion which is provided at the other of the housing and the lid and with which the engaging portion engages; an engaging portion driving mechanism which includes a driving portion having a driving shaft portion being driven and rotated and a link mechanism which converts a rotary movement of the driving shaft portion into a reciprocal movement and is coupled to the engaging portion; and a detection portion which detects that the engaging portion moves to a position where the engaging portion engages with the engaged portion in a closed state of the lid, wherein the detection portion includes a detected member which is fixed to the driving shaft portion and has a concavo-convex outer peripheral surface and at least one sensors for detecting a concave portion or a convex portion of the detected member, the engaging portion driving mechanism moves in an interlocked manner with a rotation of the detected member, and positions of the concave portion and the convex portion correspond to a position where the engaging portion engages with the engaged portion.