Key structure

A key structure, comprising:

• a base plate;
• a keycap, disposed above the base plate;
• a lifting platform, disposed between the base plate and the keycap, and comprising a first end part and a second end part opposite to the first end part, wherein the first end part is slidably connected with the keycap, and the second end part is rotatably connected with the keycap;
• an elastic body, disposed between the base plate and the lifting platform, wherein two opposite ends of the elastic body contact the base plate and the lifting platform respectively;
• a torsion spring, disposed corresponding to the second end part of the lifting platform, wherein two opposite ends of the torsion spring contact the lifting platform and the keycap respectively;
• and a reciprocating supporting member, disposed between the base plate and the lifting platform.