Patent ID: 8816231
Filing Date: 2014-08-26
Classification: H01H

Abstract:
1. A slim key structure, comprising: a lower case having at least one positioning slot; a flexible membrane disposed on the lower case, the flexible membrane having at least one post opening in corresponding alignment with the at least one positioning slot; an upper case disposed on the flexible membrane having at least one hollow guiding cylinder and a central passage defined thereon, the guiding cylinder protruding upwardly from a top surface of the upper case and downwardly from a lower surface of the upper case, the downwardly protruding portion of the guiding cylinder being matchingly receivable in the positioning slot of the lower case; a keycap having at least one guiding post and a pushing stem protruding downwardly from a bottom surface thereof, the guiding post being reciprocably received in the at least one guiding cylinder of the upper case; and an elastic piece, disposed between the keycap and the flexible membrane in the central passage depressable by the pushing stem against the flexible membrane.