| 摘要 |
A key switch includes a base, a circuit board, a retaining board, a rubber spring, a support linkage and a key cap. A first engaging mechanism and a second engaging mechanism are formed on the base. The circuit board is positioned above the base and comprises a switch electrode. The rubber spring is positioned on the circuit board. The support linkage is engaged with the base, having a first link and a second link pivotably attached together. A pair of engaging pins of the first link engage with the base, and a pair of arcuate faces is formed on the base proximate the engaging pins. A sliding link is formed on the second link to engage with the second engaging mechanism. The key cap engages with the support linkage.
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