CONTAINER LID FOR VACUUM SEALING HAVING LOCKING PARTS AND VACUUM-SEALED CONTAINER EMPLOYING SAME

摘要

Disclosed is a container lid for vacuum sealing which generates negative pressure in the internal space of a container, which is provided by covering the open upper part of a container main body, and seals same. An annular packing is mounted so as to go around the inner surface of a lid main body, and a check valve is mounted in the inner part of the outer surface of the lid main body. The check valve generates negative pressure in the internal space of the container by allowing air inside the container to flow to the outside but preventing outside air from flowing into the container when a pressure difference occurs between the inside and outside of the container. A plurality of self catching protrusions are provided respectively at a plurality of points on the edges of the lid main body, and a plurality of locking members are mounted respectively and pivotably in sections adjacent to the plurality of self catching protrusions. Each locking member comprises: self-locking protrusions which are press-fitted and coupled to the self catching protrusions in a closed state so that the locking members are not released; and main body-locking protrusions which prevent the container lid from being taken off from the container main body by being caught by the circumference of the opening part of the container main body or a main body catching protrusion, even if the container lid rises due to the expansion of the packing as a result of a decrease in the negative pressure generated inside the container.

主权项

1. A container lid for vacuum sealing for maintaining negative pressure in an internal space provided by covering an opened top portion of container main body and seals, the container lid comprising:
a packing-installing groove provided so as to go around an internal surface of a lid main body for covering an open upper part of the container main body; a closed-loop shape packing installed in the packing-installing groove and sealing contacting surface by press-fitting between an opening part of the container main body and the packing-installing groove; a check valve installing part provided on an external surface of the lid main body and in the packing-installing groove; a check valve installed in the check valve installing part and configured for generating negative pressure in the internal space of the container by allowing air inside the container to flow to the outside but preventing outside air from flowing into the container when a pressure difference occurs between the inside and outside of the container in a state that the container lid covers and seals an open upper part of the container main body; a plurality of self catching protrusions provided at two or more portions of an edge of the container lid; and a plurality of locking members, each of which being installed rotatably in portions of the edge of the lid main body neighboring the plurality of the self catching protrusions, wherein each of the plurality of locking members comprises a main body locking protrusions preventing the container lid from being detached from the container main body by latching to an edge of the container main body when the negative pressure in the internal space of the container is weakened in a closed state, and a self-locking protrusion preventing the locking member from opening by being press-fitted and engaging the self catching protrusion in the above closed state.