Patent ID: 7961177

Claim:
An input pen storage, comprising: a pen holding part coupled to an input pen; a loader, comprising: a base; and an arm disposed on one side of the base for receiving one end of the input pen, the arm having a protrusive portion used for constraining the pen holding part and the input pen; a cylindrical member used for contacting and expanding the arm, the cylindrical member having a hollow structure for receiving the input pen and exposing the one end of the input pen; a base holding member coupled to the base; an extendable fastener having an extension state and a return state for constraining the base holding member; and a forcing member connected to the other side of the base opposite to the arm for exerting an outward force on the one end of the input pen; wherein, when the one end of the input pen resists the outward force and moves the loader for displacing the input pen together with the loader, the arm escapes being expanded by the cylindrical member, thereby generating a return movement so that the pen constraining part constrains the pen holding part; and when the loader is displaced to a hold position, the base holding member contacts the extendable fastener, whereby the extendable fastener is changed from the extension state to the return state and the extendable fastener constrains the base holding member so as to hold the input pen firmly along with the loader.