Patent ID: 8816227
Filing Date: 2014-08-26
Classification: H01H

Abstract:
1. A dustproof keyboard, comprising a keyboard main body and at least one keyboard key disposed at the keyboard main body so as to be caught therein, the keyboard key comprising a keycap and a contact block connected to a side of the keycap, the keyboard main body comprising a binding layer, a silica gel layer disposed between the binding layer and the keyboard key, a circuit board, and elastic pieces corresponding to the keyboard keys and disposed between the binding layer and the circuit board, wherein in correspondence to the elastic pieces, a plurality of dustproof rings are provided on the silica gel layer, each of the dustproof rings being a hollow post with at least one end being opened, and the opened end thereof being exactly towards the contact block; wherein the dustproof ring is a ring-like post; the keycap comprises a keycap cover, a keycap sidewall and a keycap base provided with a through hole in a middle portion thereof, the keycap base and the keycap cover being connected to opposite sides of the keycap sidewall respectively, and the contact block being located within a cavity formed by the keycap cover and the keycap sidewall; and the contact block is a cylinder, an inner diameter of the dustproof ring being 1.3 times an outer diameter of the contact block, and an outer diameter thereof being smaller than a radius of an inscribed circle of the section of the keycap sidewall.