Airtight container

Abstract

The present invention relates to an airtight container that is usually used to keep foodstuffs including food and drinks. The airtight container includes: a container part; and a lid part configured to be locked to the top of the container part, in which the lid part has a two-step opening/closing structure to partially open the container part or to completely open the container by being separated from the container part when the lid part is locked to the container part. The lid part includes: a body having locking portions integrally formed such that the body can be locked to the container part on the top of the container part; and a lid plate hinged at a side on the body part to be rotatable, having integral locking portions to be able to be locked to the container part, and used to open a portion of the container part with the body locked to the container part.According to the present invention, it is possible to open/close the lid part fastened to the container part in two steps of partial opening/closing and complete opening/closing, increase ease and convenience in use, achieve stable sealing force at the container part and the lid part, and increase durability of the product such as preventing contraction when forming the product.

What is claimed is: 
     
         1 . An airtight container comprising:
 a container part; and   a lid part configured to be locked to the top of the container part,   wherein the lid part has a two-step opening/closing structure to partially open the container part or to completely open the container by being separated from the container part when the lid part is locked to the container part.   
     
     
         2 . The airtight container of  claim 1 , wherein the lid part includes:
 a body having locking portions integrally formed such that the body can be locked to the container part on the top of the container part; and   a lid plate hinged at a side on the body part to be rotatable, having integral locking portions to be able to be locked to the container part, and used to open a portion of the container part with the body locked to the container part.   
     
     
         3 . The airtight container of  claim 2 , wherein the body includes:
 a container coupling part being a frame structure of an edge type body that is seated on the top of the container part, having an opening, disposed under the lid plate, and having the locking portions on both left and right sides;   a container cover part extending from the container coupling part, configured to be seated on the top of the container part, and having a locking portion on the rear surface; and   a hinging part having a block-shaped structure which extends from the container coupling part and protrudes upward, having a stepped structure on the top to prevent contraction when a product is formed, and used to be hinged to the cover plate, and   the lid plate includes:   a cover plate being a member covering an opening of the container coupling part and having a locking portion on the front surface; and   a hinge shaft extending from the cover plate and hinged to the hinging part.   
     
     
         4 . The airtight container of  claim 3 , wherein the top of the joint of the body between the container coupling part and the container cover plate is formed as an inclined surface, the bottom of the lid plate under the hinge shaft positioned over the joint between the container coupling part and the container cover part of the body is formed as a corresponding-inclined surface, and the lid plate is moved within a regular range when rotating over the body. 
     
     
         5 . The airtight container of  claim 3 , wherein a stepped structure is formed on the top of the container cover part and a slot is formed at the edge so that a cover slide plate can be detachably coupled to the container cover part by sliding it in the slot, whereby information such as a memo or a barcode is inserted in the top of the container cover part so that the use of the airtight container can be recognized or the airtight container can be decorated, and
 the cover slide plate is a transparent member.   
     
     
         6 . The airtight container of  claim 2 , wherein a first packing-fixing groove for fitting and fixing a first sealing packing is formed on the bottom of the body and a first step by a stepped structure is formed at the upper portion having the first packing-fixing groove in order to prevent contraction when the product is formed. 
     
     
         7 . The airtight container of  claim 2 , wherein a second sealing packing is disposed in the coupling portions being in contact with each other of the body and the lid plate; a second packing-fixing groove for fitting and fixing a second sealing packing is formed on the bottom of the lid plate; a first step by the stepped structure protrudes upward from the top of the body; and when the lid plate is locked to the container part, the first step of the body presses the second sealing packing fitted and fixed in the second packing-fixing groove of the lid plate, whereby not only the contact force, but also the sealing force between the body and the lid plate can be increased.