Patent ID: 7938765

Claim:
A centrifuge comprising: a rotor that holds a sample therein; a drive device that drives the rotor to rotate; a chamber that houses the rotor therein and is disposed in a main body; a cover that is opened and closed with respect to the chamber; and a lock mechanism that locks the cover in a closed state, wherein the lock mechanism includes: a motor; a first hook mounted on the main body and driven to rotate by the motor; a second hook spaced from the first hook and mounted on the main body; a connecting member for connecting the first hook with the second hook so that the second hook is rotated according to a rotation of the first hook; and a pair of hook catchers mounted on the cover to engage with the first hook and the second hook respectively to lock the cover in the closed state, the first hook being provided with a curved portion which is different from a shape of the second hook so that the first hook is engaged with one of the catchers first and then the second hook is engaged with the other of the catchers.