Opening and closing device of rotating cage type jukebox disc tray

An opening and closing device of rotating cage type jukebox disc tray, comprising:

• a first disc tray, wherein an end of the first disc tray is installed on a first fixing post, the other end of the first disc tray carries a plurality of discs, and the first disc tray has a first ear portion on a lateral side;
• and
• an opening and closing mechanism of disc tray, comprising a first linkage mechanism and a first driving device, wherein the first linkage mechanism comprises a first linkage bar, a first sliding member and a second linkage bar, the first sliding member is slidingly disposed on the first linkage bar, the second linkage bar is slidingly disposed on the first sliding member, and the first sliding member and the second linkage bar slide along different directions;
• wherein when an end portion of the second linkage bar is connected to the first ear portion of the first disc tray, the first driving device drives the first sliding member to slide on the first linkage bar, leading the second linkage bar to slide on the first sliding member and thereby leading the first disc tray to rotate around the first fixing post.