Patent ID: 7322840

Claim:
A package with a locking mechanism, comprising: a package main body insertable into a cage formed in a host instrument; a package head integrated with the package main body, the package head protruding from the host instrument when the package main body is inserted into the cage; a latch member attached to the package main body, wherein the latch member restricts detachment of the package main body from the cage when the latch member is inserted into a hole formed in a wall of the cage and the latch member is at a contact plane thereof in contact with a front edge of the hole while protruding from a predetermined face of the package main body; and a revolving shaft disposed perpendicular to a direction in which the package main body is inserted into and detached from the cage, the latch member being pivoted on the revolving shaft, wherein the revolving shaft is disposed near the contact plane of the latch member and at least a portion of the revolving shaft is located above the hole while the latch member fits in the hole.