Patent ID: 8199130

Claim:
A fixing structure capable of connecting to a pen, the pen comprising a slot, the fixing structure comprising: a main body, the main body comprising a slide slot and an opening; a slide piece, the slide piece capable of sliding into the slide slot, the slide piece comprising a first slide unit and a second unit, the first slide unit comprising a first pressing element; a push module, the push module comprising a second pressing element, and the push module having a loose state and a tight state: wherein when the push module is in the loose state, at least part of the first pressing element is deposited in the opening; wherein when the push module is in the tight state, the second pressing element clips the second slide unit, and the first pressing element slips into the slot of the pen; wherein the first pressing element is a torsion spring in a special shape and comprises a slot against portion roughly in an arc shape and a main body against portion, such that when it is in the tight state, the main body against portion presses the main body, causing the slot against portion to clip into the slot of the pen; wherein the slide slot comprises a main slide slot and an auxiliary slide slot, the first slide unit being deposited in the main slide slot, and the second slide unit being deposited in the auxiliary slide slot, the second pressing element being in a double claw shape, the second slide element comprising a protruding end portion, and the second pressing element clipping the end portion; and wherein when the second pressing element releases the end portion of the second slide unit, the pen and the slide piece return to the loose state together due to the push of the push module.