A button-type airtight container and the lid thereof

A button-type airtight container lid, comprising an upper lid, a lower lid, a dish seal ring, a button and a lever spring mechanism, the button being mounted in a button hole of the upper lid, the dish seal ring being fixed at the periphery of the lower lid, characterized in that:

• the container lid includes a rotary toothed member and a vertical shaft;
• the rotary toothed member includes a sleeve and N spline teeth, the spline teeth being provided at the top and bottom with a helicoid, respectively, with the upper helicoid and the lower helicoid rotating in the opposite direction;
• the rotary toothed member is rotatably mounted at the lower section of the vertical shaft, with the upper end of the vertical shaft fixed on the button;
• the button hole of the upper lid is provided at the lower section with a bottom plate, which includes an N-groove spline hole, whose tooth groove has a width adapted to the spline tooth;
• the bottom plate is provided at the bottom with an end gear, which includes 2N end teeth, whose tooth groove is adapted to the top of the spline tooth, with the tooth groove of the N-groove spline hole located at the tooth groove section of the end tooth;
• and the lower lid includes a 2N-tooth end ratchet, whose ratchet tooth is adapted to the lower helicoid of the spline tooth, with N greater than or equal to 3.