Double-tongue-groove sealing structure of rotational molding box

Abstract

The utility model relates to the technical field of sealing structures, and discloses a double-tongue-groove sealing structure of a rotational molding box, which comprises a box body and a box cover, the box cover is arranged above the box body, the top of the box body is provided with a bulge, the bottom of the box cover is provided with a groove at a position corresponding to the bulge, and the groove is matched with the bulge in a clamping and embedding manner. A sealing rubber strip used for sealing is embedded in the groove, and a flange structure used for improving the sealing effect is further arranged on the inner wall of the groove. According to the utility model, the flange structure is additionally arranged at the bottom of the groove of the box cover, when the rubber strip is mounted, the rubber strip is tightly fitted with the groove of the box cover through pre-pressing force, at the moment, the middle line position of the arc surface of the rubber strip is elastically deformed, and the rubber strip and the flange structure form a sealing line with certain pressing force, so that the sealing effect between the sealing rubber strip and the groove is enhanced; tests prove that the sealing effect is obviously improved through the structure.

Description

Technical Field

[0001] The utility model belongs to the technical field of sealing structures, in particular to a double-tongue-groove sealing structure of a roto-molding box. Background Art

[0002] The traditional sealing structure of roto-molded boxes is sealed with a rubber strip, which is glued to the groove of the box cover with glue; when the box cover is closed, the protrusion of the box body will press the sealing strip tightly, causing the rubber strip to elastically deform and generate a compression force, thereby achieving a seal between the box body and the box cover.

[0003] However, the sealing effect of this structure is not very good, and sealing failure may occur occasionally; through experiments, it was found that the seal between the sealing strip and the protrusion of the box body is relatively reliable; the seal between the sealing strip and the groove of the box cover is not very stable.

[0004] In view of this, the present utility model is proposed. Utility Model Content

[0005] In order to solve the above technical problems, the basic concept of the technical solution adopted by the utility model is:

[0006] A double tongue and groove sealing structure for a rotationally molded box comprises a box body and a box cover, wherein the box cover is arranged above the box body, a protrusion is arranged on the top of the box body, a groove is arranged at a position corresponding to the protrusion at the bottom of the box cover, and the groove is engaged with the protrusion, a sealing strip for sealing is embedded in the groove, and a flange structure for improving the sealing effect is also arranged on the inner wall of the groove.

[0007] As a preferred embodiment of the utility model, the sealing strip is made of soft rubber material, the bottom of the groove is an arc surface with a semicircular cross-section, and the sealing strip matches the groove.

[0008] As a preferred embodiment of the present utility model, the flange structure is a first flange, the first flange is arranged at the middle position of the bottom of the groove, and the cross-section of the first flange is in an arc shape.

[0009] As a preferred embodiment of the present invention, the flange structure is a second flange, the second flange is arranged at the bottom of the groove, and the cross section of the second flange is in an arc shape.

[0010] As a preferred embodiment of the present utility model, two second flanges are provided, and the two second flanges are symmetrically spaced apart and arranged at the middle position of the inner wall of the bottom of the groove.

[0011] As a preferred implementation manner of the present utility model, the flange structure comprises a third flange and a fourth flange, and the cross-sections of the third flange and the fourth flange are both arc-shaped.

[0012] As a preferred embodiment of the utility model, the third flange is arranged at the middle position of the inner wall at the bottom of the groove, and two fourth flanges are arranged, and the two fourth flanges are symmetrically arranged on the inner walls on both sides of the groove.

[0013] Compared with the prior art, the utility model has the following beneficial effects:

[0014] A flange structure is added to the bottom of the groove of the box cover. When the rubber strip is installed, the pre-compression force is used to make the rubber strip tightly fit with the box cover groove. At this time, the midline position of the arc surface of the rubber strip has undergone elastic deformation, forming a sealing line with a certain compression force with the flange structure, thereby enhancing the sealing effect between the sealing strip and the groove. Experiments have proved that this structure significantly improves the sealing effect.

[0015] The specific implementation of the utility model is further described in detail below with reference to the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In the attached picture:

[0017] Figure 1 This is a schematic diagram of the pre-compression structure in the first embodiment of the utility model;

[0018] Figure 2 This is a schematic diagram of the structure before compression in the first embodiment of the utility model;

[0019] Figure 3 This is a schematic diagram of the structure after compression in the first embodiment of the utility model;

[0020] Figure 4 This is a schematic diagram of the cross-sectional structure of the box cover in the second embodiment of the utility model;

[0021] Figure 5 It is a schematic diagram of the cross-sectional structure of the box cover in the third embodiment of the present utility model.

[0022] In the figure: 10, box body; 11, protrusion; 20, box cover; 21, groove; 211, first flange; 212, second flange; 213, third flange; 214, fourth flange; 30, sealing strip. DETAILED DESCRIPTION

[0023] In order to make the purpose, technical scheme and advantages of the embodiments of the utility model clearer, the technical scheme in the embodiments will be clearly and completely described below in conjunction with the drawings in the embodiments of the utility model. The following embodiments are used to illustrate the utility model.

[0024] Embodiment 1: A double tongue and groove sealing structure of a roto-molded box, such as Figure 1-3As shown, it includes a box body 10 and a box cover 20, the box cover 20 is arranged above the box body 10, a protrusion 11 is arranged on the top of the box body 10, a groove 21 is arranged at the bottom of the box cover 20 at a position corresponding to the protrusion 11, and the groove 21 is engaged with the protrusion 11, a sealing strip 30 for sealing is embedded in the groove 21, and a flange structure for improving the sealing effect is also arranged on the inner wall of the groove 21.

[0025] like Figure 1-3 As shown, the sealing strip 30 is made of soft rubber material, the bottom of the groove 21 is an arc surface with a semicircular cross-section, and the sealing strip 30 matches the groove 21.

[0026] like Figure 1-3 As shown, the flange structure is a first flange 211 , which is disposed at the middle position of the bottom of the groove 21 , and the cross section of the first flange 211 is in an arc shape.

[0027] Working principle: a first flange 211 is added to the bottom of the groove 21 of the box cover 20. When installing the rubber strip, the rubber strip is tightly fitted with the groove 21 of the box cover 20 through pre-compression force. At this time, the midline position of the arc surface of the rubber strip has elastically deformed, forming a sealing line with a certain compression force with the first flange 211, thereby enhancing the sealing effect between the sealing strip 30 and the groove 21.

[0028] Embodiment 2: Figure 4 As shown, the flange structure is a second flange 212 , which is disposed at the bottom of the groove 21 , and has an arc-shaped cross section.

[0029] like Figure 4 As shown, two second flanges 212 are provided, and the two second flanges 212 are symmetrically spaced and arranged at the middle position of the bottom inner wall of the groove 21 .

[0030] Working principle: Compared with the first flange 211 in the first embodiment, by increasing the number of flange structures, the two second flanges 212 arranged at intervals further improve the sealing effect between the sealing strip 30 and the groove 21.

[0031] Embodiment 3: Figure 5 As shown, the flange structure includes a third flange 213 and a fourth flange 214 , and the cross-sections of the third flange 213 and the fourth flange 214 are both arc-shaped.

[0032] like Figure 5 As shown, the third flange 213 is disposed at the middle position of the bottom inner wall of the groove 21 , and two fourth flanges 214 are disposed, and the two fourth flanges 214 are symmetrically disposed on the inner walls on both sides of the groove 21 .

[0033] Working principle, compared with the first flange 211 in embodiment 1, while a third flange 213 having the same effect as the first flange 211 is provided, two fourth flanges 214 are additionally provided on both sides of the groove 21, thereby further improving the sealing effect and clamping the sealing strip 30 to prevent the sealing strip 30 from aging and falling off.

[0034] It is understood that the present invention is described by some embodiments, and those skilled in the art are aware that various changes or equivalent substitutions may be made to these features and embodiments without departing from the spirit and scope of the present invention. In addition, under the teachings of the present invention, these features and embodiments may be modified to adapt to specific circumstances and materials without departing from the spirit and scope of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed herein, and all embodiments falling within the scope of the claims of this application are within the scope of protection of the present invention.

Claims

1. A double tongue-and-groove sealing structure for a roto-molded box, comprising a box body (10) and a box cover (20), characterized in that: The box cover (20) is arranged above the box body (10), a protrusion (11) is arranged on the top of the box body (10), a groove (21) is arranged at a position corresponding to the protrusion (11) at the bottom of the box cover (20), and the groove (21) and the protrusion (11) are engaged with each other, a sealing strip (30) for sealing is embedded in the groove (21), and a flange structure for improving the sealing effect is also arranged on the inner wall of the groove (21).

2. The double tongue and groove sealing structure of the roto-molding box according to claim 1, characterized in that: The sealing strip (30) is made of soft rubber material, the bottom of the groove (21) is an arc surface with a semicircular cross section, and the sealing strip (30) matches the groove (21).

3. The double tongue and groove sealing structure of the roto-molding box according to claim 1, characterized in that: The flange structure is a first flange (211), the first flange (211) is arranged at the middle position of the bottom of the groove (21), and the cross section of the first flange (211) is in the shape of an arc.

4. The double tongue and groove sealing structure of the roto-molding box according to claim 1, characterized in that: The flange structure is a second flange (212), the second flange (212) is arranged at the bottom of the groove (21), and the cross section of the second flange (212) is in an arc shape.

5. The double tongue and groove sealing structure of the roto-molding box according to claim 4, characterized in that: Two second flanges (212) are provided, and the two second flanges (212) are symmetrically spaced apart and arranged at the middle position of the inner wall at the bottom of the groove (21).

6. The double tongue and groove sealing structure of the roto-molding box according to claim 1, characterized in that: The flange structure comprises a third flange (213) and a fourth flange (214), and the cross sections of the third flange (213) and the fourth flange (214) are both arc-shaped.

7. The double tongue and groove sealing structure of the roto-molding box according to claim 6, characterized in that: The third flange (213) is arranged at the middle position of the inner wall at the bottom of the groove (21), and two fourth flanges (214) are arranged, and the two fourth flanges (214) are symmetrically arranged on the inner walls at both sides of the groove (21).

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