| 摘要 |
<p>An external type USB apparatus is provided to reduce possibility of damaging a USB terminal part and to increase durability of a flash memory device by safe protection from static electricity. An external type USB apparatus includes a main body(41), an external case(44), a rotary cover(43) and a hooking protrusion(79). The main body forms a USB terminal part and a guide recess. The external case covers the main body and forms an opening unit on one side for enabling the USB terminal part to enter or exit. The rotary cover rotatively combined with the external case closes the opening unit. The hooking protrusion formed at the rotary cover is inserted in the guide recess. The external case forms a circular hole. The rotary cover forms a circular disk rotatably combined with the circular hole. The hooking protrusion is formed on the circular disk.</p> |
