Snap-fitting structure of paper and plastic container

Abstract

A snap-fitting structure comprising a container and cover each made of paper, plastic, or a combination of both. In one embodiment, the cover includes a cover bottom and a cover wall extending out of an edge of the cover bottom, wherein a flange is disposed on an inner side wall of the cover wall, and the flange and the cover bottom are arranged at an interval. In this embodiment, the container may include a container body and a clamping portion extending out of an edge of the container body, the clamping portion comprising a connecting portion connected to the container body and a clamp ring extending out of the connecting portion. In a cross section along a central axis of the container body, the angle between a contour line of the connecting portion and the central axis of the container body is an acute angle and a contour line of the clamp ring is parallel to the central axis of the container body. Further, an outer diameter of the clamp ring is equivalent to an inner diameter of the cover wall, and the clamp ring is capable of being flexibly positioned between the flange and the cover bottom when the cover is disposed over and fitted to the container.

1 . A snap-fitting structure comprising a container and a cover, each of the container and cover made of paper, plastic, or a combination thereof;
 wherein the cover comprises a cover bottom and a cover wall extending out of an edge of the cover bottom, wherein a flange is disposed on an inner side wall of the cover wall, and the flange and the cover bottom are arranged at an interval; and   the container comprises a container body and a clamping portion extending out of an edge of the container body, the clamping portion comprising a connecting portion connected to the container body and a clamp ring extending out of the connecting portion   wherein in a cross section along a central axis of the container body, the angle between a contour line of the connecting portion and the central axis of the container body is an acute angle, and   wherein a contour line of the clamp ring is parallel to the central axis of the container body; and   wherein an outer diameter of the clamp ring is equivalent to an inner diameter of the cover wall, and the clamp ring is capable of being flexibly disposed between the flange and the cover bottom when the cover is disposed over and fitted to the container.   
     
     
         2 . The snap-fitting structure of  claim 1 , wherein the flange and a free end of the cover wall are arranged at an interval. 
     
     
         3 . The snap-fitting structure of  claim 1 , wherein in a cross section along the central axis of the body, the contour line of the flange is arc-shaped. 
     
     
         4 . The snap-fitting structure of  claim 3 , wherein the distance from the side wall of the container body to the clamp ring is equal to the height of the arc of the flange. 
     
     
         5 . The snap-fitting structure of  claim 1 , wherein in a direction along the central axis of the body, a height of the clamp ring is equal to the minimal distance from the flange to the cover bottom.