Patent ID: 8179670

Claim:
A memory stick, comprising: a -shaped metal plate member, said -shaped metal plate member comprising two tenones respectively protruded from an inner wall thereof at two opposite sides and aimed at each other, each said tenon being formed on said inner wall of said -shaped metal plate member by means of punching said inner wall of said -shaped metal plate member with a punch and forming a protrusion and a recess located around said protrusion and then punching said protrusion with a second punch to recess a center part of said protrusion and to extend the height of said protrusion, thereby deforming said protrusion into a tubular configuration; and a casing holding therein a PC board, said PC board having a USB connector located on one end thereof, said casing being set in said -shaped metal plate member, said casing comprising two outwardly protruding pivot holders respectively disposed corresponding to said tenones of said -shaped metal plate member, said pivot holders being respectively inserted into the recess around the protrusion of each of said tenones for enabling said -shaped metal plate member to be biased relative to said casing to close or open said USB connector.