Plug-in film structure and projection lamp thereof

A novel plug-in film structure, comprising a rotary motor, a rotating shaft of the rotary motor being provided with rotary teeth, wherein the novel plug-in film structure further comprises a gear mechanism and a film mechanism, one end of the gear mechanism is meshed with the rotary teeth, and the film mechanism is magnetically connected to the other end of the gear mechanism;

• and when the rotary motor rotates, a film sheet in the film mechanism magnetically connected to the gear mechanism rotates synchronously;
• wherein the gear mechanism comprises a rotary column, and a plurality of magnetic blocks arranged on a top of the rotary column;
• the film mechanism comprises a tray, a magnetic assembly, and a film assembly;
• the film assembly is arranged in the magnetic assembly;
• the magnetic assembly is movably arranged in the tray;
• during magnetic connection, the plurality of magnetic blocks and the magnetic assembly magnetically attract each other;
• and when the rotary motor rotates, the magnetic assembly and the film assembly rotate synchronously;
• wherein the magnetic assembly comprises a fixing seat and a magnetic ring, the magnetic ring is arranged on a bottom of the fixing seat, the film assembly is arranged in the fixing seat and is spaced apart from the magnetic ring by the fixing seat, and the fixing seat is movably arranged in the tray, when the fixing seat is magnetically connected, the plurality of magnetic blocks and the magnetic ring magnetically attracting each other.