Abstract: Disclosed are a vacuum heat-preservation box lid and a vacuum heat-preservation lunch box. The vacuum heat-preservation box lid includes: a box lid body; a frame bracket, the frame bracket being connected to the box lid body, the frame bracket being provided with at least one rotatable fastening lug, the fastening lug being provided with an air release hole plug; and a seal ring, the seal ring being connected to the box lid body, the seal ring being provided with an air release hole for communicating an inside of a box body with the outside. When the fastening lug is snapped shut, the air release hole plug is in interference fit with the air release hole, thus blocking the air release hole. When the fastening lug is opened, the air release hole plug is separated from the air release hole, thus unblocking the air release hole.

Abstract: Provided is a cup lid with a retractable drinking spout and drinking cup, including a cup lid body provided with a through hole; a base fixedly connected to the cup lid body and located at a bottom of the through hole; a drinking spout movably installed in the through hole and capable of stretching out from a top of the through hole or retracting into the through hole; and an elastic part arranged in the through hole and having one end in butting connection with the base and the other end in butting connection with the drinking spout, the elastic part pushing the drinking spout to stretch out when popping up, and the elastic part being compressed to accumulate force when the drinking spout retracts.

Abstract: Provided is an automatic air-release box lid, including: a box lid body provided with an air hole, the air hole being configured as a through-hole structure, openings at two ends of the air hole being located on an upper surface and a lower surface of the box lid body respectively; and a fastening lug having a rotating shaft part by which the fastening lug is hinged to the upper surface of the box lid body, the rotating shaft part and one opening of the air hole being arranged corresponding to each other and one above the other, the rotating shaft part having a blocking surface. Further provided is a preservation box, including: an automatic air-release box lid and a box body. The box lid is fitted to cover the box body.

Abstract: Disclosed is a cup lid assembly, including: a cup lid body provided with a catch; a flip cover connected with the cup lid body in a flipable mode, the flip cover being provided with an elastic member; and a button connected with the flip cover and capable of translating on the flip cover, the button being capable of moving to a locking position or an unlocking position, the button being provided with a hook, the elastic member being connected with the button; wherein the elastic member keeps the button at the locking position; when the button is at the locking position, the hook is connected with the catch and limits the flip cover from being opened, and when the button moves to the unlocking position, the hook is separated from the catch.