A sealing structure for preventing water leakage of a refrigeration box

Abstract

A kind of sealing water leakage structure of refrigeration box, belong to refrigerated container technical field, it is characterized in that, including located inside the anti-wear plate of box, floor and side bottom corner seal;The lower edge of the anti-wear plate is sequentially provided with first extension structure, second extension structure from outside to inside, the upper and lower ends of the side bottom corner seal are respectively upper bending structure, lower bending structure, the upper bending structure is constrained between first and second extension structure, the lower bending structure is welded with the floor;Positioning protrusion, sealing rubber strip are arranged between the first extension structure and side bottom corner seal;The sealing rubber strip is provided with sealing groove and closed cavity;The positioning protrusion is fixed to the inner side surface of first extension structure and is embedded in the sealing groove of sealing rubber strip, and sealing rubber strip is tightly compressed and positioned between anti-wear plate and side bottom corner seal.The utility model installs conveniently, realizes the water leakage prevention of side plate and floor, improves the sealing performance of refrigeration box.

Description

Technical Field

[0001] This utility model relates to a sealing and leak-proof structure for a refrigerated container, belonging to the field of refrigerated container technology. Background Technology

[0002] In the prior art, the connection mechanism between the floor and side panels of a refrigerated container (3L) includes an inner floor and an outer floor, with foam material placed between the inner and outer floor. Similarly, the side panels include an inner side panel and an outer side panel, with foam material placed between the inner and outer side panels. The floor and side panels are primarily sealed using side corner seals and tape (the floor and side panels involved in the sealing structure are the inner floor and inner side panel, respectively).

[0003] like Figure 1 As shown: First, apply tape 4 to the abrasion-resistant plate 1 (i.e., the inner plate). Then, insert the side corner seal 2 into the groove of the abrasion-resistant plate 1. After that, align the side corner seal 2 and the floor 3 (inner floor) and weld them together. The seal between the side corner seal 2 and the floor 3 depends solely on tape 4. If the tape 4 is misaligned, the sealing effect will be significantly reduced. Furthermore, frequent water immersion will also noticeably reduce the sealing effect of tape 4. Once the sealing effect of tape 4 is reduced, water will seep into the casing when cleaning it. Figure 1 If the material enters the foaming material in the direction indicated by the middle arrow, over time, it will affect the performance of the foaming material, thereby impacting the insulation performance of the refrigerator.

[0004] Therefore, it is necessary to design a mating structure that can increase the sealing performance of the abrasion plate and the side bottom corner seals in order to solve the problems existing in the current technology. Utility Model Content

[0005] In order to overcome the shortcomings of the prior art, the purpose of this utility model is to provide a sealing and leak-proof structure for a refrigerator box, which is easy to install, realizes the leak-proof function of the side plate and bottom plate, and improves the sealing performance of the refrigerator box.

[0006] The technical solution of this utility model is as follows: A leak-proof and water-resistant structure for a refrigerator box, characterized in that it includes an abrasion-resistant plate, a floor, and side corner seals located on the inner side of the box; the lower edge of the abrasion-resistant plate is provided with a first extension structure and a second extension structure from the outside to the inside; the upper and lower ends of the side corner seals are respectively an upper bending structure and a lower bending structure; the upper bending structure is constrained between the first and second extension structures; and the lower bending structure is welded to the floor. The first extension structure and the side bottom corner seal are provided with a positioning protrusion and a sealing strip; the sealing strip is provided with a sealing groove and a closed cavity; the positioning protrusion is fixed to the inner side of the first extension structure and embedded in the sealing groove of the sealing strip, so as to tightly compress and position the sealing strip between the wear-resistant plate and the side bottom corner seal.

[0007] The above solution is a new type of mating structure between the abrasion plate and the side bottom corner seal. It is composed of a positioning protrusion and a sealing strip. By adding a positioning protrusion to the gap at the bottom of the original abrasion plate, the sealing strip can be easily installed on the abrasion plate to play a sealing role. While achieving water leakage prevention, it also has the advantages of easy installation of sealing strip and increased sealing performance of the box.

[0008] Furthermore, the cross-section of the closed cavity is elliptical, the sealing groove includes a C-shaped groove and a through notch provided at the opening of the C-shaped groove; the positioning protrusion includes a horizontal part matching the through notch and an arc part matching the C-shaped groove.

[0009] In the above scheme, the positioning protrusion is formed by connecting the horizontal part and the arc part, forming a row of raised "mushroom heads" on the wear-resistant plate, which facilitates the assembly of the sealing strip.

[0010] The elliptical closed cavity of the sealing strip becomes a "flattened circle" when under pressure, providing more compression for the sealing strip and forming a compressible buffer structure. After the side bottom corner seal is aligned and fitted with the anti-wear plate, it will apply pressure to the sealing strip to increase the sealing performance at that location.

[0011] The through-hole of the sealing strip facilitates quick assembly of the C-groove with the arc of the positioning protrusion. The horizontal part of the positioning protrusion is similar to a "locking tongue" and fits tightly with the through-hole of the sealing strip, making the sealing strip less likely to fall off.

[0012] Furthermore, the first extension structure sequentially includes an outwardly extending oblique straight section, a downwardly extending vertical section, and an inwardly extending horizontal section; the second extension structure sequentially includes a downwardly extending vertical section and an outwardly extending oblique straight section; the upper bending structure is a three-bend structure, sequentially including an oblique straight first bending section, a vertical second bending section, and an oblique straight third bending section. The first bent portion is located between the inclined straight section of the first extension structure and the inclined straight section of the second extension structure, and the end of the first bent portion is in close contact with the vertical section of the second extension structure; the second bent portion is in close contact with the vertical section of the first extension structure; the horizontal section of the first extension structure is located below the upper bent structure and abuts against the side bottom corner seal, forming a sealed space for placing the positioning protrusion and the sealing strip.

[0013] In the above scheme, a groove for accommodating the side bottom corner sealing bend structure is formed between the inclined straight part of the first extension structure, the vertical part of the second extension structure, and the inclined straight part; the vertical part of the first extension structure is tightly attached to the second bend of the wear-resistant plate, which plays a certain sealing role; the positioning protrusion is fixedly connected to the vertical part of the first extension structure and is located below the upper bend structure; the sealing strip is installed on the positioning protrusion and compressed tightly between the vertical part of the first extension structure and the wear-resistant plate, which is firmly installed and has good sealing performance.

[0014] Furthermore, the lower edge of the abrasion-resistant plate is provided with a third extension structure arranged obliquely. The third extension structure is located between the first and second extension structures and is fixed to the vertical section of the second extension structure; the first bend of the upper bending structure is constrained between the second and third extension structures. The third extension structure can limit the upper end of the abrasion-resistant plate, reduce the time for workers to install the side corner seals, and make the side corner seals, abrasion-resistant plate, and floor more tightly connected, further improving the sealing performance.

[0015] Furthermore, the third extension structure is parallel to the inclined straight section of the first extension structure and the inclined straight section of the second extension structure, and the length of the third extension structure is greater than the length of the inclined straight section of the second extension structure, which can play a certain role in blocking water and preventing water from entering the foaming material.

[0016] Furthermore, the lower bending structure is provided with a hook structure at the connection with the side bottom corner seal. The hook structure is used to accommodate the side of the floor, enhance the stability of the structure, and further improve the sealing and leak-proof performance.

[0017] Furthermore, the lower surface of the side corner seal's downward bending structure is an inclined plane; a support gap is formed between the inclined plane of the downward bending structure and the upper surface of the floor, and the edge of the downward bending structure is fully welded to the floor. When the foaming material is injected, the foaming material can enter the support gap, further increasing the tightness and sealing of the side corner seal, abrasion plate, and floor.

[0018] This utility model has a simple and reasonable structure and is easy to manufacture. The positioning protrusion on the abrasion plate cooperates with the sealing groove of the sealing strip, which makes the installation of the sealing strip more convenient, firm and accurate. The third extension structure of the abrasion plate also plays a limiting role when installing the side corner seal, which can reduce the time consumed during installation. The hook structure of the side corner seal can ensure the firmness after installation and continuously apply pressure to the sealing strip. The closed cavity structure of the sealing strip can ensure that the fit gap between the three (abrasion plate, sealing strip and side corner seal) is smaller and the fit is tighter when the side corner seal applies pressure. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the sealing structure between the wear-resistant plate, the side and bottom corner seals, and the floor in the background art. Figure 2 This is a schematic diagram of the sealing structure between the abrasion-resistant plate, the side corner seal, and the floor in Example 1; Figure 3 This is a schematic diagram of the sealing structure between the abrasion-resistant plate, the side corner seal, and the floor in Example 2; Figure 4This is a schematic diagram of the sealing structure between the abrasion-resistant plate, the side corner seal, and the floor in Example 3; Figure 5 This is a schematic diagram of the sealing strip structure in Examples 1-3; Figure 6 for Figure 5 Cross-sectional schematic diagram (unit: mm); Figure 7 This is a schematic diagram of the abrasion-resistant plate in Example 1 or 3; Figure 8 for Figure 7 Cross-sectional schematic diagram (unit: mm); Figure 9 This is a schematic diagram of the side bottom corner seal in Example 2 or 3; Figure 10 for Figure 9 Cross-sectional schematic diagram (unit: mm); In the diagram: 1. Abrasion-resistant plate; 2. Floor; 3. Side corner seal; 4. First extension structure; 4. Slanted straight section 4-1; 4. Vertical section 4-2; 4. Horizontal section 4-3; 5. Second extension structure; 5. Vertical section 5-1; 5. Slanted straight section 5-2; 6. Third extension structure; 7. Upper bending structure; 7. First bending part 7-1; 7. Second bending part 7-2; 7. Third bending part 7-3; 8. Lower bending structure; 9. Positioning protrusion; 10. Sealing strip; 11. Sealing groove; 12. Closed cavity; 13. C-groove; 14. Through notch; 15. Horizontal part of positioning protrusion; 16. Arc part of positioning protrusion; 17. Hook structure; 18. Foaming material; 19. Adhesive tape. Detailed Implementation

[0020] Example 1 A leak-proof and water-resistant structure for a refrigerator enclosure, such as Figure 2 As shown, the enclosure includes an abrasion-resistant plate 1, a floor 2, and a side corner seal 3 located inside the enclosure. The lower edge of the abrasion-resistant plate has a first extension structure 4, a third extension structure 6, and a second extension structure 5 arranged sequentially from the outside to the inside. The upper and lower ends of the side corner seal are an upper bending structure 7 and a lower bending structure 8, respectively. The upper bending structure is constrained within the groove formed between the third and second extension structures, and the lower bending structure is welded to the floor.

[0021] like Figure 2 As shown, a positioning protrusion 9 and a sealing strip 10 are provided between the first extension structure and the side bottom corner seal; the sealing strip has a sealing groove 11 and an elliptical closed cavity 12; the positioning protrusion is fixed to the inner side of the first extension structure and embedded in the sealing groove of the sealing strip, tightly compressing and positioning the sealing strip between the wear-resistant plate and the side bottom corner seal. Figure 5-6 As shown, the sealing groove includes a C-shaped groove 13 and a through notch 14 provided at the opening of the C-shaped groove. The positioning protrusion includes a horizontal portion 15 that matches the through notch and an arc portion 16 that matches the C-shaped groove.

[0022] like Figure 2 As shown, the first extension structure sequentially includes an outwardly extending oblique section 4-1, a downwardly extending vertical section 4-2, and an inwardly extending horizontal section 4-3; the second extension structure sequentially includes a downwardly extending vertical section 5-1 and an outwardly extending oblique section 5-2; the third extension structure 6 is located between the first and second extension structures and is fixed to the vertical section of the second extension structure. The third extension structure is parallel to the oblique section of the first extension structure and the oblique section of the second extension structure, and the length of the third extension structure is greater than the length of the oblique section of the second extension structure.

[0023] The upper bending structure is a three-bend structure, which includes a first bend 7-1 (slanted and straight), a second bend 7-2 (vertical), and a third bend 7-3 (slanted and straight). The first bend is located between the slanted and straight sections of the first and second extension structures, and the end of the first bend is in close contact with the vertical section of the second extension structure. The second bend is in close contact with the vertical section of the first extension structure. The horizontal section of the first extension structure is located below the upper bending structure and abuts against the side corner seal, forming a sealed space for placing the positioning protrusion and the sealing strip.

[0024] like Figure 2 As shown, first, use a rubber mallet to tap the sealing strip into the positioning protrusions of the abrasion-resistant plate. Then, align the side corner seals and the floor, and fully weld the bottom. This ensures that after the side corner seals and the floor are aligned, the side corner seals will continuously apply pressure to the sealing strip, causing slight compression deformation at the closed cavity of the sealing strip. The result is a tighter fit between the side corner seals, the floor, and the sealing strip, significantly improving the airtightness of the enclosure and reducing water leakage during cleaning. The third extension structure at the upper end of the abrasion-resistant plate acts as a limit during installation, improving on-site work efficiency.

[0025] like Figure 2 As shown, although water will still flow in through the gap between the anti-wear plate and the side bottom corner seal during the cleaning process, the water will eventually collect at the top of the sealing strip, and the water collected at the top of the sealing strip will automatically evaporate after a period of time.

[0026] Example 2 A leak-proof and water-resistant structure for a refrigerator enclosure, such as Figure 2 As shown, the enclosure includes an abrasion-resistant plate 1, a floor 2, and a side corner seal 3 located inside the enclosure. The lower edge of the abrasion-resistant plate has a first extension structure 4 and a second extension structure 5 arranged sequentially from the outside to the inside. The upper and lower ends of the side corner seal are an upper bending structure 7 and a lower bending structure 8, respectively.

[0027] like Figure 3As shown, a positioning protrusion 9 and a sealing strip 10 are provided between the first extension structure and the side bottom corner seal; the sealing strip has a sealing groove 11 and an elliptical closed cavity 12; the positioning protrusion is fixed to the inner side of the first extension structure and embedded in the sealing groove of the sealing strip, tightly compressing and positioning the sealing strip between the wear-resistant plate and the side bottom corner seal. Figure 5-6 As shown, the sealing groove includes a C-shaped groove 13 and a through notch 14 provided at the opening of the C-shaped groove. The positioning protrusion includes a horizontal portion 15 that matches the through notch and an arc portion 16 that matches the C-shaped groove.

[0028] like Figure 3 As shown, the first extension structure sequentially includes an outwardly extending oblique section 4-1, a downwardly extending vertical section 4-2, and an inwardly extending horizontal section 4-3; the second extension structure sequentially includes a downwardly extending vertical section 5-1 and an outwardly extending oblique section 5-2.

[0029] The upper bending structure is a three-bend structure, which includes a first bend 7-1 (slanted and straight), a second bend 7-2 (vertical), and a third bend 7-3 (slanted and straight). The first bend is located between the slanted and straight sections of the first and second extension structures, and the end of the first bend is in close contact with the vertical section of the second extension structure. The second bend is in close contact with the vertical section of the first extension structure. The horizontal section of the first extension structure is located below the upper bending structure and abuts against the side corner seal, forming a sealed space for placing the positioning protrusion and the sealing strip.

[0030] The upper bending structure is constrained within the groove formed between the first and second extension structures, and the lower bending structure is welded to the floor.

[0031] like Figure 3 As shown, the lower bending structure has a side hook structure 17 for accommodating the floor at the connection with the side bottom corner seal. This ensures that when the abrasion plate falls to the top of the floor, it is easy to quickly position for installation, saving installation time. At the same time, it further improves the tightness between the components and enhances the water-proof performance of the structure.

[0032] Example 3 Combining the structural features of embodiments 1 and 2, such as Figure 4 As shown, a third extension structure and a hook structure are provided to provide positioning structures for the upper and lower ends of the abrasion plate, which can improve installation efficiency. The hook structure at the bottom of the side corner seal can also continuously apply pressure to the sealing strip after installation, without affecting the efficiency of welding operations and ensuring the sealing effect of the structure.

[0033] Example 4 Based on embodiments 1, 2, or 3, the lower bending structure 8 of the side corner seal has a sloping plane on its lower surface; a support gap is formed between the sloping plane of the lower bending structure and the upper surface of the floor, and the edge of the lower bending structure is fully welded to the floor. This allows the foaming material to enter the support gap, further increasing the tightness and sealing of the side corner seal, abrasion-resistant plate, and floor.

Claims

1. A sealing and leak-proof structure for a refrigerator box, characterized in that, It includes an abrasion-resistant plate, a floor, and a side corner seal located inside the box; the lower edge of the abrasion-resistant plate is provided with a first extension structure and a second extension structure from the outside to the inside; the upper and lower ends of the side corner seal are respectively an upper bending structure and a lower bending structure; the upper bending structure is constrained between the first and second extension structures; and the lower bending structure is welded to the floor. The first extension structure and the side bottom corner seal are provided with a positioning protrusion and a sealing strip; the sealing strip is provided with a sealing groove and a closed cavity; the positioning protrusion is fixed to the inner side of the first extension structure and embedded in the sealing groove of the sealing strip, so as to tightly compress and position the sealing strip between the wear-resistant plate and the side bottom corner seal.

2. The sealing and leak-proof structure for a refrigerator box according to claim 1, characterized in that, The sealing groove includes a C-shaped groove and a through notch provided at the opening of the C-shaped groove; the positioning protrusion includes a horizontal part that matches the through notch and an arc part that matches the C-shaped groove.

3. The sealing and leak-proof structure for a refrigerated container according to claim 1, characterized in that, The cross-section of the closed cavity is elliptical.

4. The sealing and leak-proof structure for a refrigerator box according to claim 2, characterized in that, The first extension structure includes, in sequence, an outwardly extending oblique straight section, a downwardly extending vertical section, and an inwardly extending horizontal section; the second extension structure includes, in sequence, a downwardly extending vertical section and an outwardly extending oblique straight section; the upper bending structure is a three-bend structure, which includes, in sequence, an oblique straight first bending section, a vertical second bending section, and an oblique straight third bending section. The first bent portion is located between the inclined straight section of the first extension structure and the inclined straight section of the second extension structure, and the end of the first bent portion is in close contact with the vertical section of the second extension structure; the second bent portion is in close contact with the vertical section of the first extension structure; the horizontal section of the first extension structure is located below the upper bent structure and abuts against the side bottom corner seal, forming a sealed space for placing the positioning protrusion and the sealing strip.

5. The sealing and leak-proof structure for a refrigerator body according to claim 4, characterized in that, The lower edge of the wear-resistant plate is also provided with a third extension structure arranged obliquely and vertically. The third extension structure is located between the first and second extension structures and is fixed to the vertical section of the second extension structure; the first bending part of the upper bending structure is constrained between the second and third extension structures.

6. The sealing and leak-proof structure for a refrigerated container according to claim 5, characterized in that, The third extension structure is parallel to the oblique and straight segments of the first extension structure and the second extension structure, and the length of the third extension structure is greater than the length of the oblique and straight segments of the second extension structure.

7. The sealing and leak-proof structure for a refrigerated container according to claim 4, characterized in that, The downward bending structure has a hook structure at the connection with the side bottom corner seal, which is used to accommodate the side of the floor.

8. A sealing and leak-proof structure for a refrigerated container according to claim 5 or 7, characterized in that, The lower bending structure of the side corner seal has a sloping plane on its lower surface; a support gap is formed between the sloping plane of the lower bending structure and the upper surface of the floor, and the edge of the lower bending structure is fully welded to the floor.

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