Composite magnetic plastic co-extrusion door seal and door body structure

Abstract

The utility model discloses a kind of composite magnetic plastic co-extrusion door seal and door body structure, belong to refrigeration equipment technical field, door seal, including main air bag, the side of main air bag is sequentially connected with magnet strip bag, connecting air bag and inner air bag, the side of inner air bag is provided with magnetic plastic co-extrusion magnetic strip, the other side of main air bag is provided with clamping chamber, the lower part of inner air bag right side wall is obliquely provided with auxiliary fin edge;Door body structure, including door seal, door seal is set in the opening side of door shell, the inside of door shell is provided with door lining, clamping chamber is set in the mounting groove of door lining, the opposite side of door shell is provided with U shell, the inside of U shell is provided with inner container, the inside of inner container and magnetic plastic co-extrusion magnetic strip corresponding position is provided with suction piece.The utility model is through magnet strip and door seal co-extrusion process, inside and outside magnet strip synergic effect and process structure optimization, sealing performance and production efficiency are realized with the synchronous promotion.

Description

Technical Field

[0001] This utility model relates to the field of refrigeration equipment technology, and in particular to a composite magnetic plastic co-extruded door seal and door structure. Background Technology

[0002] Traditional refrigerator door seals typically use a single magnetic interface to close the refrigerator body and door. However, this design has significant technical drawbacks in practical applications: First, when the refrigerator liner tilts slightly due to long-term load or deformation, the sealing effect of the single magnetic strip structure is concentrated only on the outer side. The inner air bladder, lacking effective magnetic support, is prone to separating from the door seal lining, leading to localized seal failure, causing cold air leakage and internal temperature fluctuations. Second, traditional magnetic strips need to be inserted into the pre-reserved cavity of the door seal manually or semi-automatically, a cumbersome process with difficulty in controlling precision and low processing efficiency. Third, the single magnetic strip structure has weak fatigue resistance; after tens of thousands of door opening and closing cycles, the magnetic force weakens significantly, and micro-gaps easily appear at the sealing interface, resulting in increased energy consumption.

[0003] Therefore, there is an urgent need for a door seal technology that combines high sealing reliability, efficient production process and long-term durability, in order to systematically solve the technical defects of traditional single magnetic strip structures in terms of sealing adaptability, processing efficiency and fatigue resistance, and meet the comprehensive needs of modern refrigerators for high-efficiency sealing. Utility Model Content

[0004] The purpose of this invention is to provide a composite magnetic plastic co-extruded door seal and door body structure, which solves the problems of poor sealing adaptability, complicated process and difficulty in controlling precision, low processing efficiency, weak fatigue resistance, and easy appearance of micro gaps at the sealing interface, resulting in increased energy consumption in single magnetic strip sealing structures.

[0005] To solve the above-mentioned technical problems, the present invention adopts the following technical solution:

[0006] This utility model discloses a composite magnetic plastic co-extruded door seal, including a main airbag. A magnetic strip bag, a connecting airbag, and an inner airbag are sequentially connected on one side of the main airbag. A magnetic plastic co-extruded magnetic strip is provided on the side of the inner airbag away from the main airbag. A carding chamber is provided on the other side of the main airbag. An auxiliary wing is inclinedly provided on the lower part of the right side wall of the inner airbag.

[0007] Furthermore, a groove is provided at the connection between the auxiliary wing and the inner air bladder.

[0008] Furthermore, an inner support rib is provided on the inner side of the main airbag. The inner support rib is in the shape of a zigzag line, and a sealing wing is provided on the inner support rib near the zigzag point of the mounting chamber.

[0009] Furthermore, the outer wall of the card-mounting chamber away from the main airbag is provided with inverted fins, and a door sealing groove sealing fin is provided on the outer side of the inverted fins.

[0010] Furthermore, the connecting rib between the main airbag and the mounting chamber is provided with a cover wing extending to the left.

[0011] Furthermore, the magnetic stripe pouch is provided with an outer magnetic stripe inside.

[0012] Furthermore, the outer surface of the co-extruded magnetic strip is flush with the outer surface of the connecting airbag.

[0013] A door structure includes a composite magnetic plastic co-extruded door seal as described above. The door seal is disposed on the opening side of the door shell. A door liner is disposed on the inner side of the door shell. A snap-fit ​​chamber is disposed in the mounting groove of the door liner. A U-shell is disposed on the opposite side of the door shell. An inner liner is disposed on the inner side of the U-shell. A suction element is disposed on the inner side of the inner liner at a position corresponding to the magnetic plastic co-extruded magnetic strip.

[0014] Compared with the prior art, the beneficial technical effects of this utility model are as follows:

[0015] This invention achieves simultaneous improvement in sealing performance and production efficiency through the synergistic effect of inner and outer magnetic strips and optimization of process structure.

[0016] 1. The dual magnetic strip structure allows both the inner and outer door seals to engage with the enclosure. The inner co-extruded magnetic strip, with its excess material at the door liner step, creates an interference fit, compensating for any deviation in the inner liner's tilt angle. This eliminates the problem of airbag misalignment caused by inner liner deformation in traditional single magnetic strip structures, reducing the probability of inner layer seal failure. The outer magnetic strip forms the main sealing interface with the enclosure, effectively blocking external heat flow penetration and reducing heat exchange loss in the door seal.

[0017] 2. The inner magnetic strip adopts a magnetic plastic co-extrusion magnetic strip. The magnetic plastic co-extrusion technology realizes the integrated molding of the magnetic strip and the door seal body, which reduces two production steps compared with the traditional magnetic insertion process and improves processing efficiency.

[0018] 3. The synergistic effect of the dual magnetic strips improves the overall resistance to deformation of the door seal, reduces the fluctuation range of internal temperature in the refrigerator, improves humidity stability, and reduces overall energy consumption. Attached Figure Description

[0019] The present invention will be further described below with reference to the accompanying drawings.

[0020] Figure 1 This is a schematic diagram of the composite magnetic plastic co-extruded door seal of this utility model;

[0021] Figure 2This is a schematic diagram of the door structure of this utility model in the unclosed state;

[0022] Figure 3 This is a schematic diagram of the door structure of this utility model in the closed state.

[0023] Explanation of reference numerals in the attached diagram: 1. Magnetic strip bladder; 2. Inner air bladder; 3. Connecting air bladder; 4. Main air bladder; 5. Auxiliary wing edge; 5-1. Groove; 6. Inner support rib; 6-1. Sealing wing; 7. Snap-fit ​​chamber; 8. Inverted wing; 9. Door sealing groove sealing wing; 10. Cover liner long wing; 11. Magnetic strip co-extruded; 12. Suction component; 13. U-shell; 14. Inner liner; 15. Door shell; 16. Door liner; 17. Outer magnetic strip. Detailed Implementation

[0024] like Figure 1 As shown, a composite magnetic plastic co-extruded door seal includes a main airbag 4. A magnetic strip bladder 1, a connecting airbag 3, and an inner airbag 2 are sequentially connected to one side of the main airbag 4. An outer magnetic strip 17 is installed inside the magnetic strip bladder 1. A magnetic plastic co-extruded magnetic strip 11 is connected to the side of the inner airbag 2 away from the main airbag 4. The door seal and the magnetic plastic co-extruded magnetic strip 11 are integrally formed by magnetic plastic co-extrusion. The overall thickness of the inner airbag 2 and the magnetic plastic co-extruded magnetic strip 11 is the same as the thickness of the connecting airbag 3, i.e., the outer surface of the magnetic plastic co-extruded magnetic strip 11 is flush with the outer surface of the connecting airbag 3. A clamping chamber 7 is connected to the other side of the main airbag 4. An auxiliary wing 5 is obliquely connected to the lower part of the right side wall of the inner airbag 2. A groove 5-1 is provided at the connection between the auxiliary wing 5 and the inner airbag 2. The first auxiliary wing 5 is used to cover the corner of the door liner 16 to improve the sealing effect.

[0025] The inner side of the main airbag 4 is connected to an inner support rib 6, which is in the shape of a zigzag line. A sealing wing 6-1 is provided on the inner support rib 6 near the zigzag point of the mounting chamber 7.

[0026] Two inverted wings 8 are connected to the outer wall of the mounting chamber 7 on the side away from the main airbag 4. The two inverted wings 8 are symmetrically arranged on both sides of the mounting chamber 7. The bottom of the inverted wing 8 on the outer side is connected to an arc-shaped door sealing groove sealing wing 9.

[0027] A cover wing 10 extending to the left is connected to the connecting rib between the main airbag 4 and the mounting chamber 7. The cover wing 10 is used to cover the outside of the door shell 15 to improve the sealing effect of the door seal.

[0028] Based on the above, Figure 1 As shown in the door seal, this embodiment also provides a door body structure, such as... Figure 2-3As shown, the door structure includes a composite magnetic-plastic co-extruded door seal as described above. The door seal is located on the opening side of the door shell 15. A door liner 16 is installed on the inner side of the door shell 15. The snap-fit ​​chamber 7 is installed in the mounting groove of the door liner 16. The mounting groove is an inverted Ω shape. The diameter at the maximum position of the cross-section of the snap-fit ​​chamber 7 is larger than the opening diameter of the mounting groove. When the snap-fit ​​chamber 7 is inserted into the mounting groove through its own elastic deformation, it can be firmly snapped into the mounting groove. A U-shell 13 is provided on the opposite side of the door shell 15. An inner liner 14 is installed on the inner side of the U-shell 13. A suction member 12 is installed on the inner side of the inner liner 14 at a position corresponding to the magnetic co-extruded magnetic strip 11. The suction member 12 is a magnetic strip or an iron strip. The inner liner 14 can be made of PS material. In this case, a limiting groove is designed on the back of the inner liner 14. The suction member 12 is placed in the limiting groove and fixed with tape. The suction member 12 and the magnetic co-extruded magnetic strip 11 are attracted to each other.

[0029] Both the U-shell 13 and the door shell 15 are made of PCM material, the outer magnetic strip 17 can be attracted to the U-shell 13, and the door liner 16 is made of PS material.

[0030] The embodiments described above are merely preferred embodiments of the present utility model and are not intended to limit the scope of the present utility model. Various modifications and improvements made to the technical solutions of the present utility model by those skilled in the art without departing from the spirit of the present utility model should fall within the protection scope defined by the claims of the present utility model.

Claims

1. A composite magnetic plastisol coextruded door closure characterized by: It includes a main airbag (4), on one side of the main airbag (4) are a magnetic strip bag (1), a connecting airbag (3) and an inner airbag (2) connected in sequence. On the side of the inner airbag (2) away from the main airbag (4) is a magnetic plastic co-extruded magnetic strip (11). On the other side of the main airbag (4) is a carding chamber (7). The lower part of the right side wall of the inner airbag (2) is inclined with an auxiliary wing (5).

2. The composite magnetic plastisol co-extruded door closure of claim 1, wherein: A groove (5-1) is provided at the connection between the auxiliary wing edge (5) and the inner air bladder (2).

3. The composite magnetic plastisol co-extruded door closure of claim 1, wherein: The inner side of the main airbag (4) is provided with an inner support rib (6), which is in the shape of a zigzag line. A sealing wing (6-1) is provided on the inner support rib (6) near the fold point of the mounting chamber (7).

4. The composite magnetic plastisol co-extruded door closure of claim 1, wherein: The outer wall of the card-mounted chamber (7) away from the main airbag (4) is provided with an inverted wing (8), and a door sealing groove sealing wing (9) is provided on the outer side of the inverted wing (8).

5. The composite magnetic plastisol co-extruded door closure of claim 1, wherein: A cover wing (10) extending to the left is provided on the connecting rib between the main airbag (4) and the mounting chamber (7).

6. The composite magnetic plastisol co-extruded door closure of claim 1, wherein: The magnetic stripe bag (1) is provided with an outer magnetic stripe (17) inside.

7. The composite magnetic plastisol co-extruded door closure of claim 1, wherein: The outer surface of the co-extruded magnetic strip (11) is flush with the outer surface of the connecting airbag (3).

8. A door structure, characterized by: The composite magnetic plastic co-extruded door seal as described in any one of claims 1-7 is provided on the opening side of the door shell (15), the door shell (15) is provided with a door liner (16) on the inner side, the card-mounting chamber (7) is provided in the mounting groove of the door liner (16), a U-shell (13) is provided on the opposite side of the door shell (15), an inner liner (14) is provided on the inner side of the U-shell (13), and a suction member (12) is provided on the inner side of the inner liner (14) at a position corresponding to the magnetic plastic co-extruded magnetic strip (11).

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