Patent ID: 7661923

Claim:
A casing comprising: a first casing section; a second casing section; a third casing section, provided between the first casing section and the second casing section, that is bendably held by the first casing section via a first hinge part, and is bendably held by the second casing section via a second hinge part; and a coupling part for implementing detachable coupling between the first casing section and the second casing section, wherein the first, the second and the third casing sections, the first and the second hinge parts, and the coupling part are formed in one piece; wherein the first and the second hinge parts are formed to be thinner than the first, the second and the third casing sections, and are provided with slits, and wherein the coupling part is made up of a fixture pawl provided in one of the first and the second casing sections to be coupled, and a recess provided in the other casing section thereof, for securely holding the fixture pawl.