Patent ID: 9024217
Filing Date: 2015-05-05
Classification: H01H

Abstract:
1. A key structure of a keyboard, said key structure comprising: a base plate for supporting plural key structures; an intermediate plate comprising a hollow portion and a position-limiting recess, wherein said position-limiting recess is located near a corner of said hollow portion, wherein said intermediate plate further comprises a protrusion post, wherein said protrusion post is protruded from a lower part of said intermediate plate, and said protrusion post is perpendicular to said lower part of said intermediate plate, wherein said intermediate plate is fixed on said base plate, wherein a perforation corresponding to said protrusion post of said intermediate plate is formed in a top surface of said base plate, and a tapered slot is formed in a bottom surface of said base plate, wherein said perforation and said tapered slot are in communication with each other and collaboratively defined as a trumpet-shaped positioning hole, wherein said protrusion post of said intermediate plate is embedded within said perforation and fixed on said base plate by a heat melt process; a keycap disposed over said intermediate plate, and comprising a hooking part, wherein said hooking part is located at a lower part of said keycap; a scissors-type connecting member arranged between said intermediate plate and said keycap, and comprising a lower position-limiting post group and an upper position-limiting post group, wherein said lower position-limiting post group is accommodated within said position-limiting recess of said intermediate plate, and said upper position-limiting post group is accommodated within said hooking part of said keycap; and an elastic element having a peripheral portion fixed on a lower part of said intermediate plate, and a central portion of said elastic element is penetrated through said scissors-type connecting member and contacted with said lower part of said keycap.