Box cover in protruding and sunken deformation

Abstract

Provided is a box cover in protruding and sunken deformation. The center of the end portion of the box cover is provided with a flat end face; the outer circle of the flat end face is provided with anarc-shaped end face; a flat pulling ring or a straight pulling ring is installed in the middle of the flat end face; vertical teeth are uniformly distributed on the edge of the protruding and sunkenbox cover, and are annularly arranged; when the arc-shaped end face protrudes out of the position above the straight pulling ring, the box cover end face is in protruding deformation, the lower portions of the vertical teeth are closed up inwards along with deformation, a boss on the lower portions of the vertical teeth is closed up inwards at the same time, and the diameter of the boss is L1; when the arc-shaped end face is sunken towards the position below the straight pulling ring, the box cover end face is in sunken deformation, the lower portions of the vertical teeth are expanded outwards along with deformation, the boss on the lower portions of the vertical teeth is expanded outwards at the same time, and the diameter of the boss is L2; and L2 is larger than L1, and the included angle between the vertical teeth and the arc-shaped end face is relatively unchanged. The middle of the flat pulling ring is provided with a pulling ring hole, and the side face of the flat pulling ringis provided with a pulling ring table. Transition fit between a box body and the box cover can be changed into movable fit.

Description

technical field [0001] The invention relates to a box cover, especially a "concave-convex deformed box cover", which can be used as a cover for a stationery box, a food box, a medicine box, a tea box, and the like. Background technique [0002] The commonly used box cover is buckled on the top of the box. Chinese patent application number: 201110168245.1, "Preparation method of zirconium stone go box cover", the go box cover in the patent application is the most typical circular structure, and the box cover is placed on the box mouth Above, the box is too easy to separate from the lid. There is also the most common tea box, the cover is set on the outside of the tea box, and the cover and the box adopt a transition fit, which is not very convenient to open. It is pulled out while buckling the cover with your fingers. The transitional fit is relatively tight, and it is laborious to open. This type of box cover structure is too common, and the packaging quality of the product...

AI Technical Summary

Problems solved by technology

[0002] The commonly used box cover is buckled on the top of the box. Chinese patent application number: 201110168245.1, "Preparation method of zirconium stone go box cover", the go box cover in the patent application is the most typical circular structure, and the box cover is placed on the box mouth Above, this kind of box is too easy to separate from the lid

There is also the most common tea box, the cover is set on the outside of the tea box, and the cover and the box adopt a transition fit, which is not very convenient to open. It is pulled out while buckling the cover with your fingers. The transitional fit is relatively tight, and it takes a lot of effort to open. This type of box cover structure is too common, and the packaging quality of the product is very low.

Images