Patent ID: 6022157
Filing Date: 2000-02-08
Classification: G06F,H01H

Abstract:
A key structure of a keyboard comprising:a top cover;a key supporting structure installed on the top cover;two hooks installed on the top cover positioned on two opposite sides of the key supporting structure, each of the hooks comprising a plate structure on its top and a horizontal sliding slot under the plate structure;a key cap having a bottom side movably connected to the key supporting structure in an up-and-down manner, the key cap further comprising two clamps on its bottom side;a link bar comprising two upper ends and two lower ends integrally built together, the two upper ends being rotatably installed in the two clamps on the bottom side of the key cap, the two lower ends being separately installed in the horizontal sliding slots of the two hooks on the top cover in a slidable manner, the link bar being used for maintaining balance of the key cap when the key cap is depressed;wherein the plate structure of at least one of the two hooks comprises an injection hole through which grease can be injected into the horizontal sliding slot under the plate structure so as to reduce the friction between the horizontal sliding slot and the lower end of the link bar in the horizontal sliding slot.