Accessory apparatus and electronic device

An accessory apparatus, wherein the accessory apparatus comprises:

• a body;
• a first support plate;
• a second support plate;
• a third support plate, wherein the first support plate, the second support plate, and the third support plate are rotatably connected in sequence;
• and
• a rotating shaft assembly, wherein the first support plate is rotatably connected to an end portion of the body by using the rotating shaft assembly, the rotating shaft assembly comprising:
• a third shaft;
• a third fastening bracket, fastened to the second plate edge of the first support plate, wherein the third fastening bracket is configured to drive the third shaft to rotate synchronously;
• and
• a fourth fastening bracket, fastened to an end portion of the body, wherein the fourth fastening bracket is rotatably connected to the third shaft.

An electronic device, comprising:

• a host;
• and
• an accessory apparatus, wherein the accessory apparatus comprises:
• a body;
• a first support plate;
• a second support plate;
• a third support plate, wherein the first support plate, the second support plate, and the third support plate are rotatably connected in sequence;
• and
• a rotating shaft assembly, wherein the first support plate is rotatably connected to an end portion of the body by using the rotating shaft assembly, the rotating shaft assembly comprising:
• a first shaft comprising a first limiting structure, the first shaft fastened to the first support plate;
• a second shaft, fastened to an end portion of the body, and wherein an axis of the first shaft and an axis of the second shaft are parallel and do not overlap;
• a conjoined cam, wherein the conjoined cam is sleeved on the first shaft and the second shaft;
• a first cam member, sleeved on the first shaft;
• and
• a second cam member, sleeved on the second shaft, wherein
• when the accessory apparatus is in a closed state, the first cam member abuts against an end face of the first limiting structure along an axial direction of the first shaft, and there is a clearance fit between the first cam member and the conjoined cam;
• and
• when the first shaft rotates to a specified angle, the first cam member abuts against the conjoined cam.