Patent ID: 8080755

Claim:
A key structure comprising: a keycap; a base plate; and a scissors-type support member for connecting said keycap with said base plate, said scissors-type support member comprising: an inner frame having a first convex part and an internal concave part formed on an arm part of said inner frame, wherein said first convex part comprises a first inclined surface and a second inclined surface; and an outer frame having an internal V-shaped notch and a second convex part formed on an arm part of said outer frame, said V-shaped notch comprising a third inclined surface and a fourth inclined surface, wherein when said keycap is located at a first height with respect to said base plate, said first inclined surface is sustained against said third inclined surface, and when said keycap is located at a second height with respect to said base plate, said second inclined surface is sustained against said fourth inclined surface, wherein said second convex part is a triangular prism having a fifth inclined surface extended from said third inclined surface, said concave part has a sixth inclined surface extended from said first inclined surface, and said triangular prism is accommodate in said concave part, wherein said fifth inclined surface is sustained against said sixth inclined surface when said keycap is located at said first height.