Interlock unit and automated analyzer equipped with same

An interlock capable of preventing rotation from a closed position to an open position of a cover that is provided so as to cover an upper part of a work surface, which is an upper surface of a casing, and is pivotally supported to be rotatable in a vertical direction between the closed position and the open direction around a support shaft provided on one side of the casing,

• the interlock comprising:
• a hollow case having a rectangular parallelepiped shape disposed at a position adjacent to an inner side surface of the casing, below an end part opposite to the support shaft at the closed position of the cover;
• a latch provided on an upper surface of the case, supported to be movable between a non-operating position and an operating position, and engaged with a protrusion provided on the cover at the operating position to inhibit the cover from rotating toward the open position;
• an electromagnetic drive provided below the latch to drive the latch;
• a drive connector for driving the latch by connecting the latch and the electromagnetic drive and transmitting an operation of the electromagnetic drive to the latch;
• a drain port provided to be opened to the outside below the case;
• and
• a liquid guide that is provided so as to extend in a lateral direction through at least an upper part of the electromagnetic drive, and guides a liquid that enters into the case from the upper surface of the case to the drain port.