CN211919184U - Packing box sealing structure - Google Patents

Abstract

The utility model discloses a packing box sealing structure, which belongs to the field of sealing and packaging of built-in products, and comprises a sealing bulge annularly arranged on a sealing surface of a box cover, a groove which is positioned on a box body and is matched with the sealing bulge, and a silicon rubber sealing strip which is filled in the groove and is used for realizing the air sealing of a packing box; when the box cover is closed on the box body, the bottom surface and each side surface of the sealing bulge part contact and extrude the silicon rubber sealing strip to form a sealing path of a tortuous path, and the air sealing of the packing box is realized. Only the sealing bulge needs to be processed, the flatness of the contact surface of the sealing bulge and the silicon rubber sealing strip is ensured, the processing amount is reduced, the advantages of good sealing performance and high reliability are achieved, and meanwhile, the flatness is easier to achieve; because of the addition of the sealing convex part, the rigidity of the box cover is enhanced, and the air tightness problem caused by the deformation of the box cover can be further reduced.

Description

Packing box sealing structure

Technical Field

The utility model relates to an interior product seal packing field, more specifically relates to a packing box seal structure.

Background

In order to realize the sealing property of the box body of the original elastomer packing box and prevent the elastomer from rusting and other defects caused by the problem of the sealing property, the sealing surface of the box cover is generally a plane, specifically, as shown in figure 1, the sealing surface of the box body of the original packing box is a plane, an ethylene propylene diene monomer sealing strip is adopted as the rubber sealing strip, and the rubber sealing strip is arranged on the sealing surface of the box body through a self-tapping screw and a pressing strip, so that the structure has high requirement on the flatness of the sealing surface of; the processing difficulty is very high, and the buckling force of the lock catch of the sealing structure is large, the buckling is difficult, the airtight effect is poor, and the long-time storage of the bomb body is not facilitated. Therefore, effective solutions to solve the above problems need to be proposed.

SUMMERY OF THE UTILITY MODEL

In order to overcome the defects of the prior art, the sealing structure of the packing box of the utility model solves the problems that in the prior art, the box body sealing surface of the packing box is a plane, and the rubber sealing strip is arranged on the box body sealing surface through the tapping screw and the pressing strip, and the structure has high requirement on the flatness of the box body sealing surface; the processing difficulty is very big, and the hasp fastening power of this type of seal structure is big, and the fastening is difficult, and airtight effect is also poor, is unfavorable for the problem of long-time storage body.

To achieve the purpose, the utility model adopts the following technical proposal:

the utility model provides a packing box sealing structure, which comprises a sealing bulge annularly arranged on a sealing surface of a box cover, a groove which is positioned on the box body and is matched with the sealing bulge, and a silicon rubber sealing strip which is filled in the groove and is used for realizing the air sealing of the packing box;

when the box cover is closed on the box body, the bottom surface and the side surfaces of the sealing bulge part contact and extrude the silicon rubber sealing strip to form a sealing path of a tortuous path, and the air sealing of the packing box is realized.

Preferably, the filling height of the silicone rubber sealing strip is smaller than the depth of the groove, and the bottom surface of the silicone rubber sealing strip is attached to the inner bottom wall of the groove.

Preferably, the sealing protrusion is a trapezoidal protrusion, and the groove is a trapezoidal groove.

Preferably, the sharp edges of the sealing convex parts are provided with chamfers.

Preferably, the silicone rubber sealing strip is a cured structure of GD414 silicone rubber which is fluid.

The utility model has the advantages that:

the sealing structure of the packaging box of the utility model only needs to process the sealing bulge part 1, and ensures the flatness of the contact surface of the sealing bulge part 1 and the silicon rubber sealing strip 3, thereby reducing the processing amount, having the advantages of good sealing performance and high reliability, overcoming the defects of high flatness requirement on the sealing surface, high processing difficulty, easy leakage, poor sealing and low reliability caused by no excessive force fastening, and simultaneously achieving the flatness more easily in the prior art; due to the addition of the sealing convex part 1, the rigidity of the box cover is enhanced, and the air tightness problem caused by the deformation of the box cover can be further reduced.

Drawings

FIG. 1 is a schematic view of a prior art mounting structure provided in an embodiment of the present invention;

fig. 2 is a schematic view of an installation structure of a sealing structure of a packing box according to an embodiment of the present invention.

In the figure:

1. a sealing boss; 2. a groove; 3. a silicon rubber sealing strip.

Detailed Description

The technical solution of the present invention is further explained by the following embodiments with reference to the accompanying drawings.

Fig. 2 is a schematic view of an installation structure of a sealing structure of a packing box according to an embodiment of the present invention. As shown in fig. 2.

The utility model provides a packing box sealing structure, which comprises a sealing bulge part 1 annularly arranged on a sealing surface of a box cover, a groove 2 which is arranged on the box body and is matched with the sealing bulge part 1, and a silicon rubber sealing strip 3 which is filled in the groove 2 and is used for realizing the air sealing of the packing box; when the box cover is closed on the box body, the bottom surface and each side surface of the sealing bulge part 1 contact and extrude the silicon rubber sealing strip 3 to form a sealing path of a tortuous path, and the air sealing of the packing box is realized. The silicon rubber sealing strip 3 is formed by pouring fluid silicon rubber into the groove 2 and curing the fluid silicon rubber; further, the filling height of the silicone rubber sealing strip 3 is smaller than the depth of the groove 2, and the bottom surface of the silicone rubber sealing strip 3 is attached to the inner bottom wall of the groove 2. Further, the sealing protrusion 1 is a trapezoidal protrusion, and the groove 2 is a trapezoidal groove. Furthermore, the sharp edges of the sealing convex parts 1 are provided with chamfers. The extrusion contact area with the silicon rubber sealing strip 3 is increased, and the air tightness is improved. Further, the silicone rubber sealing strip 3 is a cured structure of fluid GD414 silicone rubber. GD414 silicon rubber is poured into the groove 2 and is vulcanized into an elastomer after being exposed in air, the room temperature vulcanized silicon rubber has the characteristics of low vulcanization temperature, high vulcanization speed, easy operation and the like, and forms good bonding performance with the groove 2, has small corrosion to the box body, and has good high and low resistance, aging resistance, flame resistance and other good performances.

The specific working process is that the box body is placed on a standard working platform, and the groove 2 at the sealing position of the box body is filled with self-flowing silicon rubber to be naturally cured; after solidification, the positioning pin of the box cover of the packing box is aligned with the positioning pin of the box body (not shown in the figure) to close the box, so that the sealing bulge part 1 on the box cover is aligned with the silicon rubber sealing strip 3 in the groove 2 on the box body, and the lock catch is buckled and the screw is screwed down to realize the air tightness of the packing box. In more detail, in the embodiment, the sealing bulge part 1 is processed on the sealing surface of the box cover, the size of the sealing bulge part 1 is matched with that of the groove, the sealing bulge part 1 on the box cover is contacted with the silicon rubber sealing strip 3 to realize the air tightness of the packing box, the bottom surface and each side surface of the sealing bulge part 1 are contacted and extruded with the silicon rubber sealing strip 3 to form a sealing path of a tortuous path, and the air tightness of the packing box is realized. By adopting the structure, only the sealing bulge part 1 needs to be processed, the flatness of the contact surface of the sealing bulge part 1 and the silicon rubber sealing strip 3 is ensured, the processing amount is reduced, and the sealing structure has the advantages of good sealing performance and high reliability. The defects of high requirement on the flatness of a sealing surface, high processing difficulty, easy leakage, poor sealing and low reliability caused by no need of excessive force fastening in the prior art for realizing air tightness can be overcome, and the flatness is also more easily achieved. Due to the addition of the sealing convex part 1, the rigidity of the box cover is enhanced, and the air tightness problem caused by the deformation of the box cover can be further reduced.

While the invention has been described with reference to a preferred embodiment, it will be understood by those skilled in the art that various changes may be made and equivalents may be substituted for elements thereof without departing from the spirit and scope of the invention. The present invention is not to be limited by the specific embodiments disclosed herein, and other embodiments that fall within the scope of the claims of the present application are intended to be within the scope of the present invention.

Claims (5)

1. A sealing structure of a packing box is characterized by comprising a sealing convex part (1) annularly arranged on a sealing surface of a box cover, a groove (2) which is arranged on the box body and is matched with the sealing convex part (1), and a silicon rubber sealing strip (3) which is filled in the groove (2) and is used for realizing the air sealing of the packing box;

when the box cover is closed on the box body, the bottom surface and the side surfaces of the sealing bulge part (1) are in contact extrusion with the silicon rubber sealing strip (3) to form a sealing path of a tortuous path, and the air sealing of the packing box is realized.

2. A package sealing structure according to claim 1, wherein the filling height of the silicone rubber sealing strip (3) is smaller than the depth of the groove (2), and the bottom surface of the silicone rubber sealing strip (3) is attached to the inner bottom wall of the groove (2).

3. A package sealing structure according to claim 1, wherein said sealing protrusion (1) is a trapezoidal protrusion and said recess (2) is a trapezoidal recess.

4. A package sealing structure according to claim 1, wherein the sharp edges of the sealing protrusion (1) are provided with chamfers.

5. A packing case sealing structure according to claim 1, wherein the silicone rubber sealing strip (3) is a cured structure of GD414 silicone rubber which is fluid.

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