Patent ID: 7558058

Claim:
A unit, comprising: a unit body; a case that covers the unit body; and an ejector that attaches the unit body and the case to an electronic apparatus and ejects the unit body and the case from the electronic apparatus, wherein said ejector comprising: a lever that is attached foldably and unfoldably to the case, a force being applicable to said lever in attaching the unit body to the electronic apparatus and ejecting the unit body from the electronic apparatus, the lever including a first engagement part, and a tab, the tab being engaged with the electronic apparatus and fixing said unit body and the case onto the electronic apparatus when said lever is located at a folding position; an engagement member that is movable along a surface of the case between a lock position at which said engagement member is engaged with the first engagement part of said lever folded onto the case, and locks said lever at the folding position, and an unlock position at which said engagement member unlocks the first engagement part of said lever and allows said lever to unfold from the case; and an elastic member configured to apply an elastic force to said engagement member toward the lock position, the first engagement part moving with the engagement member against the elastic force of the elastic member when the lever is unfolding, and the first engagement part being restrained from unfolding by the engagement member when the lever is at the folding position, as a result of the engagement member being reset to the lock position by the elastic force of the elastic member.