Flash memory device with a retractable plug

A flash memory device, comprising:

• a case defining a receiving cavity and an opening at one end thereof;
• a memory module received in the receiving cavity and having a plug formed at one end thereof;
• a revolver retained on another end of the case opposite to the opening;
• and
• a screw having opposed first end and second end, the first end retained on the memory module and the second end retained in the revolver;
• wherein the screw drives the plug in or out of the opening as the revolver rotates;
• wherein the case defines a circular hole opposite to the opening, the revolver has an annular post retained in the circular hole.

A flash memory device comprising:

• a case defining an internal space and having one opening on one end;
• a memory module received in the internal space and moveable along an axial direction to be in an in-and-out condition, via said opening, relative to the case;
• an intermediate actuator located in the internal space and moveable along said axial direction;
• a revolver located on the case opposite to said end in said axial direction;
• screw structures formed between said revolver and said intermediate actuator to convert rotation of the revolver to a linear movement of the intermediate actuator with a first distance;
• and
• gear structures formed between the intermediate actuator and the memory module to convert the linear movement of the intermediate actuator with said first distance to a linear movement of the memory module with a second distance which is larger than said first distance.