Key structure and electronic device

A key structure, comprising:

• a key portion, having a pressed side;
• an elastic assembly, including a first elastic member fixed to a side of the key portion away from the pressed side, a supporting portion fixed to a side of the first elastic member away from the key portion, and a second elastic member fixed to the supporting portion and spaced apart from the first elastic member to form an accommodating cavity, where the second elastic member has a middle portion arranged opposite to and spaced apart from the first elastic member and two deformation ends arranged at two opposite ends of the middle portion, and the two deformation ends are fixedly connected with the supporting portion;
• a supporting assembly, connected to a side of the middle portion away from the first elastic member, wherein the two deformation ends are spaced apart from the supporting assembly, and a side of the supporting assembly away from the middle portion is fixed to a housing of an electronic device;
• a flexible circuit board, including a supporting section located in the accommodating cavity and fixed to a side of the second elastic member facing the first elastic member and a bent section formed by bending and extending the supporting section in a direction away from the key portion, wherein the bent section is electrically connected with an external circuit;
• and
• at least two pressure sensors, fixed to a side of the supporting portion facing the first elastic member, wherein each respective deformation end of the two deformation ends is arranged corresponding to at least one pressure sensor along a pressed direction of the pressed side, and the at least two pressure sensors are electrically connected with the supporting section.