Patent ID: 7345253

Claim:
A key structure, comprising: a key cover; a base module, comprising: a substrate, comprising a first guiding portion and a second guiding portion; a slider, movable between a first position and a second position, comprising a first contact portion and a second contact portion; a first rod, comprising a first end pivotally connected to the key cover and a second end pivotally connected to the first guiding portion, wherein the second end is movable along the first guiding portion; a second rod, connected to the first rod, comprising a third end pivotally connected to the key cover and a fourth end pivotally connecting the second guiding portion, wherein the fourth end is movable along the second guiding portion; and a resilient member, connecting the substrate and the first rod and exerting a lateral spring force on the first rod, wherein when the key structure is in a normal state, the first contact portion restricts the fourth end, and the key cover is perpendicularly movable with respect to the substrate; wherein when slider moves from the first position to the second position, the second contact portion impels the fourth end of the second rod outward of the key structure, such that the key cover descends toward the substrate, and the key structure is switched from the normal state to a depressed state.