Patent ID: 8542483

Claim:
A memory stick, comprising: a metal housing in the form of a seamless rectangular metal tube, said metal housing comprising a top opening and a bottom opening respectively located on opposing top and bottom ends thereof, a top notch formed on the top end in edges of said top opening of the metal housing and a longitudinal top sliding slot vertically located on the top end in a single edge of top opening and spaced apart from said top notch; a PC board comprising a USB interface circuit and an IC package circuit having a memory function; a tray made of a metal sheet member and attached to the whole back side of said PC board; a lock body comprising an accommodation recess adapted for accommodating an upper part of said tray and a part of said IC package circuit of said PC board for enabling said USB interface circuit to be suspending in the bottom opening of said metal housing, a positioning block located above a top of said accommodation recess and having a bottom wall connected to the accommodating recess and press-fitted into the top opening of said metal housing, a locating block inserted into the top notch of said metal housing, and a notch located on one lateral side of said positioning block; a locking mechanism comprising a C-shaped shackle extended from a top of said lock body and suspending above the notch of said lock body, a spring member mounted in the notch of said lock body, and a slide supported on said spring member and being movable between a locked position and an unlocked position in said longitudinal top sliding slot of said metal housing, when the slide is located in the locked position, said slide engages said shackle, and when the slide is located in the unlocked position, said slide is moved along the longitudinal top sliding slot of said metal housing from said locking position to said unlocked position where said slide is spaced apart from said shackle, said slide comprising a press block suspending outside the longitudinal top sliding slot of said metal housing and a stub rod located on a top thereof for engaging with the free end of said C-shaped shackle when the slide is located in the locked position.