Door end and thermal container

By installing heat-insulating connections and reinforcements at the door ends of insulated containers, the problems of structural complexity and increased costs caused by the installation of single-phase electric refrigeration units are solved, achieving convenient installation and ensuring insulation performance.

CN224336260UActive Publication Date: 2026-06-09SHENGSHI CONTAINER MANAGEMENT SHANGHAI +1

Patent Information

Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
SHENGSHI CONTAINER MANAGEMENT SHANGHAI
Filing Date
2025-07-07
Publication Date
2026-06-09

AI Technical Summary

Technical Problem

The installation of single-phase electric refrigeration units or other accessories on existing insulated containers leads to complex container structures, increases manufacturing costs, and affects insulation performance.

Method used

Thermal insulation connection parts and reinforcement parts are set at the door ends. The thermal insulation connection parts and door panel reinforcement parts extend circumferentially through the through holes to enhance the structural strength. A single-phase electric refrigeration unit is installed at the through holes to avoid occupying the space of the insulated container.

Benefits of technology

This approach enables convenient installation of single-phase electric refrigeration units, ensures that insulation performance is not reduced, and avoids a significant increase in costs.

✦ Generated by Eureka AI based on patent content.

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  • Figure CN224336260U_ABST
    Figure CN224336260U_ABST
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Abstract

This utility model discloses a door end and an insulated container, comprising an outer door panel with an outer door panel mounting hole; an inner door panel with an inner door panel mounting hole; the outer door panel mounting hole and the inner door panel mounting hole pass through each other to form a through hole; a heat-insulating connecting part is connected around the through hole between the outer door panel and the inner door panel to form a heat-insulating cavity filled with heat-insulating material; a door panel reinforcing part is arranged around the circumferential edge of the outer door panel on the side of the outer door panel near the inner door panel; a chiller frame reinforcing part is arranged around the circumferential edge of the outer door panel with the outer door panel mounting hole on the side of the outer door panel near the inner door panel; wherein, the heat-insulating connecting part is inserted between the door panel reinforcing part, the chiller frame reinforcing part and the inner door panel. The purpose of this utility model is to provide a door end that allows for convenient installation of a unidirectional electric chiller or other accessories without significantly increasing costs, while still ensuring a certain level of heat insulation performance.
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Description

Technical Field

[0001] This utility model belongs to the field of container technology, specifically, it relates to a door end and an insulated container. Background Technology

[0002] Containers can be used to transport and store various types of goods, and can also be used for living and office purposes. When used for office purposes, insulated or refrigerated containers are generally chosen to ensure a comfortable working environment. Ordinary refrigeration units are three-phase powered, with redundant functions and high prices, making them unsuitable for residential areas with single-phase electricity. Therefore, a lower-cost single-phase refrigeration unit is needed to power the insulated container. Furthermore, different accessories are installed on the insulated container body according to different needs. Installing the aforementioned single-phase refrigeration unit or other accessories, whether at the front or side, complicates the container structure, increases manufacturing costs, and hinders the full utilization of internal space. Therefore, it is advisable to install these accessories at the door ends.

[0003] Therefore, developing a door-end and insulated container that allows for convenient installation of unidirectional electric chillers or other accessories at the door end without significantly increasing costs while still ensuring a certain level of insulation performance is a pressing technical problem that needs to be solved. Utility Model Content

[0004] The purpose of this utility model is to provide a door end and an insulated container that allows for the convenient installation of a unidirectional electric chiller or other accessories through the door end without significantly increasing costs, while still ensuring a certain level of insulation performance.

[0005] To achieve the above-mentioned objectives, the present invention employs the following technical solution:

[0006] In one aspect, this utility model proposes a gate end, comprising:

[0007] The outer door panel has mounting holes for the outer door panel.

[0008] The inner door panel has an inner door panel mounting hole; the outer door panel mounting hole and the inner door panel mounting hole pass through each other to form a through hole;

[0009] A heat-insulating connection part is connected around the outer door panel and the inner door panel along the through hole to form a heat-insulating cavity, the heat-insulating cavity being filled with heat-insulating material; the heat-insulating connection part includes a first heat-insulating connection assembly and a second heat-insulating connection assembly.

[0010] A door panel reinforcement is provided around the circumferential edge of the outer door panel on the side of the outer door panel closest to the inner door panel;

[0011] A refrigeration frame reinforcement is provided around the outer door panel on the side of the outer door panel near the inner door panel, along the circumference of the mounting hole in the outer door panel.

[0012] The first heat-insulating connection assembly is inserted between the door panel reinforcement and the inner door panel, and the second heat-insulating connection assembly is inserted between the refrigeration frame reinforcement and the inner door panel.

[0013] In some embodiments of this application, the chiller frame reinforcement includes a top reinforcing rib and a bottom reinforcing rib.

[0014] The first thermal insulation connection assembly includes a top thermal insulation connection component and a bottom thermal insulation connection component;

[0015] The top reinforcing rib of the refrigeration unit frame is configured to be inserted into the top heat insulation connection component, and the bottom reinforcing rib of the refrigeration unit frame is configured to be inserted into the bottom heat insulation connection component; the top reinforcing rib and the bottom reinforcing rib of the refrigeration unit frame are inserted into the inner door panel.

[0016] In some embodiments of this application, the door panel reinforcement includes door side reinforcement ribs and door center reinforcement ribs;

[0017] The second thermal insulation connection assembly includes a side thermal insulation connection component and a middle thermal insulation connection component;

[0018] The door side reinforcing rib is configured to be inserted into the side heat insulation connection component, the door middle reinforcing rib is configured to be inserted into the middle heat insulation connection component, and the side heat insulation connection component and the middle heat insulation connection component are inserted into the inner door panel.

[0019] In some embodiments of this application, the door panel reinforcement includes a top door reinforcement rib and a bottom door reinforcement rib. The two ends of the top door reinforcement rib are respectively connected to the middle door reinforcement rib and the side door reinforcement rib, and the two ends of the bottom door reinforcement rib are respectively connected to the middle door reinforcement rib and the side door reinforcement rib.

[0020] In some embodiments of this application, the lower end of the top reinforcing rib of the refrigeration unit frame is connected to the upper end of the top reinforcing rib of the door;

[0021] The door top reinforcing rib is connected to the outer top plate by a first fastener;

[0022] The lower end of the top reinforcing rib of the chiller frame has a first flange, which is inserted into the top heat insulation connection component.

[0023] In some embodiments of this application, the top reinforcing rib of the refrigeration unit frame and the top reinforcing rib of the door are an integral structure;

[0024] Alternatively, the top reinforcing rib of the refrigeration unit frame may be a first L-shaped component.

[0025] In some embodiments of this application, the lower end of the bottom reinforcing rib of the refrigeration unit frame is connected to the upper end of the bottom reinforcing rib of the door;

[0026] The door bottom reinforcing rib is connected to the outer top plate by a second fastener;

[0027] The upper end of the bottom reinforcing rib of the chiller frame has a second flange, which is inserted into the bottom heat insulation connection component.

[0028] In some embodiments of this application, the bottom reinforcing rib of the refrigeration unit frame and the bottom reinforcing rib of the door are an integral structure;

[0029] Alternatively, the bottom reinforcing rib of the chiller frame may be a first L-shaped component.

[0030] In some embodiments of this application, with the chiller installed on the outer side of the outer door panel, a first pre-embedded nut is provided on the side of the door side reinforcing rib near the inner door panel, and a first bolt passes through the chiller, the outer door panel, and the door side reinforcing rib in sequence before being threaded to the first pre-embedded nut; a second pre-embedded nut is provided on the side of the door middle reinforcing rib near the inner door panel, and a second bolt passes through the outer door panel and the door middle reinforcing rib in sequence before being threaded to the second pre-embedded nut;

[0031] Alternatively, with the chiller installed from the inside side of the inner door panel, a third pre-embedded nut is provided on the inner door panel near the door side reinforcing rib, and a third bolt is used to pass through the inner door panel of the chiller in sequence and then be threaded to the third pre-embedded nut; a fourth pre-embedded nut is provided on the inner door panel near the door center reinforcing rib, and a fourth bolt is used to pass through the fourth connecting hole of the fourth connector connected to the chiller, the inner door panel in sequence, and then be threaded to the fourth pre-embedded nut.

[0032] On the other hand, this application also relates to a guarantee container, including the aforementioned door end.

[0033] Compared with the prior art, the advantages and positive effects of this utility model are:

[0034] By insulated connecting parts extending circumferentially along the through holes penetrating the inner and outer door panels, the insulation performance at the through holes is ensured, and the insulated connecting parts prevent heat transfer between the inner and outer door panels. Door panel reinforcement parts surrounding the circumferential edge of the outer door panel enhance the overall structural strength of the door end. Furthermore, refrigeration unit frame reinforcement parts extending circumferentially along the through holes further strengthen the structural strength at the through holes. This allows for the installation of single-phase electric refrigeration units and other accessories at the through holes without occupying excessive space in the insulated container, without significantly increasing costs, and while maintaining guaranteed insulation performance.

[0035] Other features and advantages of this utility model will become clearer after reading the detailed embodiments of this utility model in conjunction with the accompanying drawings. Attached Figure Description

[0036] To more clearly illustrate the technical solutions in the embodiments of this utility model, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0037] Figure 1 This is a front view of one embodiment of a door end proposed in this utility model;

[0038] Figure 2 This is a side sectional view of one embodiment of a door end proposed in this utility model (the door top reinforcing rib and the cold machine frame top reinforcing rib are separate structures).

[0039] Figure 3 yes Figure 2 A partial schematic diagram of point A in the middle;

[0040] Figure 4 yes Figure 2 A partial schematic diagram at point B in the middle;

[0041] Figure 5 This is a side sectional view of another embodiment of the door end proposed in this utility model (the door top reinforcing rib and the cold machine frame top reinforcing rib are an integral structure).

[0042] Figure 6 This is the book Figure 5 A partial schematic diagram at point C in the middle;

[0043] Figure 7 This is the book Figure 5 A partial schematic diagram at point D in the middle;

[0044] Figure 8 This is a transverse sectional view of one embodiment of an insulated container proposed in this utility model (the refrigeration unit is installed from the outside).

[0045] Figure 9 yes Figure 8 A partial schematic diagram at point E in the middle;

[0046] Figure 10 This is a cross-sectional view of another embodiment of the insulated container proposed in this utility model (the refrigeration unit is installed from the inside).

[0047] Figure 11 yes Figure 10 A partial schematic diagram at point F in the middle;

[0048] Figure 12 yes Figure 10 A partial schematic diagram at point G in the middle;

[0049] In the picture,

[0050] 100. Outer door panel;

[0051] 200. Inner door panel;

[0052] 300, Through hole;

[0053] 410. Top thermal insulation connection components;

[0054] 420. Bottom thermal insulation connection components;

[0055] 430. Side thermal insulation connection components;

[0056] 440. Insulation connection components;

[0057] 510. Door side reinforcing ribs;

[0058] 520. Door reinforcement ribs;

[0059] 530. Door top reinforcing rib;

[0060] 540. Reinforcing ribs at the bottom of the door;

[0061] 550. First fastener;

[0062] 560. Second fastener;

[0063] 610. Reinforcing ribs at the top of the chiller frame;

[0064] 611, First flanging;

[0065] 620. Reinforcing ribs at the bottom of the chiller frame;

[0066] 621. Second flanging;

[0067] 700. Insulated cavity;

[0068] 711. First pre-embedded nut;

[0069] 712, First bolt;

[0070] 721. Second embedded nut;

[0071] 722, Second Bolt;

[0072] 731. Third pre-embedded nut;

[0073] 732, the third bolt;

[0074] 741. Fourth pre-embedded nut;

[0075] 742. Fourth bolt;

[0076] 800, chiller;

[0077] 810, First connector;

[0078] 820, second connector. Detailed Implementation

[0079] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0080] In the description of this application, it should be understood that the terms "center", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application.

[0081] The terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this application, unless otherwise stated, "a plurality of" means two or more.

[0082] In the description of this application, it should be noted that, unless otherwise expressly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to fixed connections, detachable connections, or integral connections; they can refer to mechanical connections, direct connections, or indirect connections through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0083] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0084] The following disclosure provides many different embodiments or examples for implementing various structures of the present invention. To simplify the disclosure, specific examples of components and arrangements are described below. Of course, these are merely examples and are not intended to limit the scope of the invention. Furthermore, reference numerals and / or reference letters may be repeated in different examples; such repetition is for simplification and clarity and does not in itself indicate a relationship between the various embodiments and / or arrangements discussed.

[0085] In some embodiments of this application, such as Figures 1 to 12 As shown, this relates to a door end that allows for the convenient installation of accessories required for containers, such as single-phase refrigeration units.

[0086] The door end includes an outer door panel 100, an inner door panel 200, a heat insulation connection part, a door panel reinforcement part, and a cold machine frame reinforcement part.

[0087] To facilitate the convenient installation of accessories such as single-phase electric chillers, an outer door panel mounting hole is provided on the outer door panel 100. An inner door panel mounting hole is provided on the inner door panel 200. The inner door panel mounting hole and the outer door panel mounting hole pass through each other to form a through hole 300. The through hole 300 is used to install accessories such as single-phase electric chillers.

[0088] This application uses the installation of chiller 800 as an example for illustration. The installation of other accessories is the same as that of chiller 800.

[0089] The heat-insulating connection part is connected around the outer door panel 100 and the inner door panel 200 along the through hole to form a heat-insulating cavity 700, which is filled with heat-insulating material.

[0090] The door panel reinforcement is disposed around the circumferential edge of the outer door panel 100 on the side of the outer door panel 100 near the inner door panel 200.

[0091] The refrigeration frame reinforcement is arranged around the outer door panel 100 on the side near the inner door panel 200 along the circumference of the outer door panel mounting hole;

[0092] The heat insulation connection part is inserted between the door panel reinforcement part, the cold machine frame reinforcement part and the inner door panel 200.

[0093] That is, both the door panel reinforcement and the chiller frame reinforcement are arranged around the insulation cavity 700 formed by the inner door panel 200 and the outer door panel 100.

[0094] The door panel reinforcement section is used to enhance the overall structural strength of the door end.

[0095] A reinforcing section for the chiller frame is arranged circumferentially around the through hole 300. This reinforcing section strengthens the structural integrity at the through hole 300. When a single-phase electric chiller or other accessories are installed at the through hole 300, the reinforcing section strengthens the circumferential structural integrity of the through hole 300, ensuring the structural integrity of the area around the through hole 300 remains intact and preventing deformation of the through hole 300.

[0096] Because a heat-insulating connection is provided between the outer door panel 100 and the inner door panel 200, good heat insulation performance can be ensured in the circumference surrounding the through hole 300, avoiding the reduction of the heat insulation performance at the door end due to the opening of the outer door panel mounting hole on the outer door panel 100 and the opening of the inner door panel mounting hole on the inner door panel 200.

[0097] In some embodiments of this application, the chiller frame reinforcement includes a top reinforcing rib 610 and a bottom reinforcing rib 620.

[0098] The thermally insulated connection includes a first thermally insulated connection assembly and a second thermally insulated connection assembly.

[0099] The first thermal insulation connection assembly includes a top thermal insulation connection component 410 and a bottom thermal insulation connection component 420;

[0100] Among them, the top reinforcing rib 610 of the refrigeration unit frame is configured to be inserted into the top heat insulation connection component 410, and the bottom reinforcing rib 620 of the refrigeration unit frame is configured to be inserted into the bottom heat insulation connection component 420; the top reinforcing rib 610 and the bottom reinforcing rib 620 of the refrigeration unit frame are inserted into the inner door panel 200.

[0101] The distance between the top and bottom of the through hole 300 and the top and bottom of the outer door panel 100 and the inner door panel 200 is relatively large.

[0102] Therefore, the top reinforcing rib 610 and the bottom reinforcing rib 620 of the chiller frame need to be installed separately.

[0103] The distances between the side wall of the through hole 300 near the door and the side and middle of the outer door panel 100 and inner door panel 200 are relatively small.

[0104] The door panel reinforcement includes a side door reinforcement 510 and a center door reinforcement 520;

[0105] The second thermal insulation connection assembly includes a side thermal insulation connection component 430 and a middle thermal insulation connection component 440;

[0106] Among them, the door side reinforcing rib 510 is configured to be inserted into the side heat insulation connection component 430, the door middle reinforcing rib 520 is configured to be inserted into the middle heat insulation connection component 440, and the side heat insulation connection component 430 and the middle heat insulation connection component 440 are inserted into the inner door panel 200.

[0107] Since the distance between the side wall of the through hole 300 near the door side and the side of the outer door panel 100 and the inner door panel 200 is relatively small, the door side reinforcing rib 510 extends from one side of the through hole 300 to the side wall of the side of the outer door panel 100. While strengthening the outer door panel 100, it can also strengthen the structural strength at the through hole 300.

[0108] The door side reinforcing rib 510 extends vertically from the top of the outer door panel 100 to the bottom of the outer door panel 100.

[0109] Since the distance between the side wall of the through hole 300 near the middle of the door and the middle of the outer door panel 100 and the inner door panel 200 is relatively small, the door reinforcing rib 520 extends from one side of the through hole 300 to the middle side wall of the outer door panel 100. While strengthening the outer door panel 100, it can also strengthen the structural strength at the through hole 300.

[0110] The door reinforcement 520 extends vertically from the top of the outer door panel 100 to the bottom of the outer door panel 100.

[0111] like Figure 2 , Figure 3 , Figure 4 As shown, since the distance between the top wall of the through hole 300 and the top of the outer door panel 100 is relatively large, in addition to the cold machine frame top reinforcing 610 provided along the top of the through hole 300, a separate door top reinforcing 530 is also required.

[0112] The door top reinforcing rib 530 extends along the top of the outer door panel 100 on the side close to the inner door panel 200.

[0113] Since the bottom wall of the through hole 300 is far from the bottom of the outer door panel 100, in addition to the cold machine frame bottom reinforcing 620 provided along the bottom of the through hole 300, a separate door bottom reinforcing 540 is also required.

[0114] The bottom reinforcing rib 540 extends along the bottom of the outer door panel 100 near the inner door panel 200.

[0115] In other embodiments of this application, such as Figure 5 , Figure 6 , Figure 7 As shown, the distance between the top wall of the through hole 300 and the top of the outer door panel 100 is small, and the lower end of the top reinforcing rib 610 of the cold machine frame is connected to the upper end of the top reinforcing rib 530 of the door; the top reinforcing rib 530 of the door is connected to the outer top plate through the first fastener 550.

[0116] In addition, the top reinforcing rib 610 of the refrigeration unit frame and the top reinforcing rib 530 of the door can also be integrated into one structure.

[0117] Specifically, a first flange 611 is formed at the lower end of the top reinforcing rib 610 of the refrigeration unit frame, and the first flange 611 is inserted into the top heat insulation connection component 410.

[0118] Specifically, the top reinforcing rib 610 of the refrigeration unit frame can be a first L-shaped component.

[0119] The bottom wall of the through hole 300 is relatively close to the bottom of the outer door panel 100. The lower end of the bottom reinforcing rib 620 of the cold machine frame is connected to the upper end of the bottom reinforcing rib 540 of the door. The bottom reinforcing rib 540 of the door is connected to the outer door panel 100 by the second fastener 560.

[0120] In addition, the bottom reinforcing rib 620 of the cold machine frame and the bottom reinforcing rib 540 of the door can also be integrated into one structure.

[0121] Specifically, a second flange 621 is formed at the lower end of the bottom reinforcing rib 620 of the cold machine frame, and the second flange 621 is inserted into the bottom heat insulation connection component 420.

[0122] Specifically, the bottom reinforcing rib 620 of the cold machine frame can be a second L-shaped component.

[0123] The two ends of the door top reinforcing rib 530 are connected to the door middle reinforcing rib 520 and the door side reinforcing rib 510, respectively.

[0124] The two ends of the bottom door reinforcing rib 540 are connected to the middle door reinforcing rib 520 and the side door reinforcing rib 510, respectively.

[0125] Thus, the top door reinforcing rib 530, the middle door reinforcing rib 520, the bottom door reinforcing rib 540, and the side door reinforcing rib 510 are connected in a ring to form a rectangular reinforcing structure.

[0126] In some embodiments of this application, to facilitate the installation of accessories such as single-phase electric chillers, L-shaped connectors are provided on the single-phase electric chillers, and connection holes are provided on the L-shaped connectors. The single-phase electric chillers and other accessories can be installed on the outside of a door.

[0127] Specifically, the L-shaped connector near the door end of the single-phase electric chiller and other accessories is defined as the first connector 810. The connection hole formed on the first connector 810 is called the first connection hole.

[0128] The L-shaped connector near the center of the door end, which is connected to accessories such as single-phase electric chillers, is defined as the second connector 820. The connection hole formed on the second connector 820 is called the second connection hole.

[0129] A first pre-embedded nut 711 is provided on the side of the door side reinforcing rib 510 near the inner door panel 200. The first bolt 712 passes through the first connecting hole on the first connector, the outer door panel 100, and the door side reinforcing rib 510 in sequence and is then threadedly connected to the first pre-embedded nut 711.

[0130] A second embedded nut 721 is provided on the side of the door reinforcement 520 near the inner door panel 200. The second bolt 722 passes through the second connecting hole of the second connector, the outer door panel 100, and the door reinforcement 520 in sequence and is then threadedly connected to the second embedded nut 721.

[0131] In other embodiments of this application, accessories such as single-phase electric chillers can be installed on the inside of the door.

[0132] A third embedded nut 731 is provided on the side of the inner door panel 200 near the door side reinforcing rib 510. The third bolt 732 is used to pass through the first connecting hole of the first connector connected to the chiller and the inner door panel 200 in sequence and then be threaded to the third embedded nut 731.

[0133] A fourth pre-embedded nut 741 is provided on the side of the inner door panel 200 near the door center reinforcing rib 520. The fourth bolt 742 is used to pass through the second connecting hole of the second connector connected to the chiller, the inner door panel 200 and then threadedly connected to the fourth pre-embedded nut 741.

[0134] In some embodiments of this application, an insulated container is also described, which includes the aforementioned door end. By installing accessories such as single-phase electric refrigeration units on the door end, the container does not occupy excessive space, the cost is not significantly increased, and the insulation performance is still guaranteed.

[0135] In the description of the above embodiments, specific features, structures, materials, or characteristics may be combined in any suitable manner in one or more embodiments or examples.

[0136] Whenever possible, the various aspects and features described and shown in the specification can be applied individually, and these individual aspects can serve as the subject of a divisional application.

[0137] The above are merely specific embodiments of this utility model, but the protection scope of this utility model is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in this utility model should be included within the protection scope of this utility model. Therefore, the protection scope of this utility model should be determined by the protection scope of the claims.

Claims

1. A gate terminal, characterized in that, include: The outer door panel has mounting holes for the outer door panel. The inner door panel has an inner door panel mounting hole; the outer door panel mounting hole and the inner door panel mounting hole pass through each other to form a through hole; A heat-insulating connection part is connected around the outer door panel and the inner door panel along the through hole to form a heat-insulating cavity, the heat-insulating cavity being filled with heat-insulating material; the heat-insulating connection part includes a first heat-insulating connection assembly and a second heat-insulating connection assembly. A door panel reinforcement is provided around the circumferential edge of the outer door panel on the side of the outer door panel closest to the inner door panel; A refrigeration frame reinforcement is provided around the outer door panel on the side of the outer door panel near the inner door panel, along the circumference of the mounting hole in the outer door panel. The first heat-insulating connection assembly is inserted between the door panel reinforcement and the inner door panel, and the second heat-insulating connection assembly is inserted between the refrigeration frame reinforcement and the inner door panel.

2. The gate end according to claim 1, characterized in that, The chiller frame reinforcement includes a top reinforcing rib and a bottom reinforcing rib. The first thermal insulation connection assembly includes a top thermal insulation connection component and a bottom thermal insulation connection component; The top reinforcing rib of the refrigeration unit frame is configured to be inserted into the top heat insulation connection component, and the bottom reinforcing rib of the refrigeration unit frame is configured to be inserted into the bottom heat insulation connection component; the top reinforcing rib and the bottom reinforcing rib of the refrigeration unit frame are inserted into the inner door panel.

3. The gate end according to claim 2, characterized in that, The door panel reinforcement includes side door reinforcement ribs and center door reinforcement ribs; The second thermal insulation connection assembly includes a side thermal insulation connection component and a middle thermal insulation connection component; The door side reinforcing rib is configured to be inserted into the side heat insulation connection component, the door middle reinforcing rib is configured to be inserted into the middle heat insulation connection component, and the side heat insulation connection component and the middle heat insulation connection component are inserted into the inner door panel.

4. The gate end according to claim 3, characterized in that, The door panel reinforcement includes a top door reinforcement rib and a bottom door reinforcement rib. The two ends of the top door reinforcement rib are connected to the middle door reinforcement rib and the side door reinforcement rib, respectively. The two ends of the bottom door reinforcement rib are connected to the middle door reinforcement rib and the side door reinforcement rib, respectively.

5. The gate end according to claim 4, characterized in that, The lower end of the top reinforcing rib of the refrigeration unit frame is connected to the upper end of the top reinforcing rib of the door. The door top reinforcing rib is connected to the outer door panel by a first fastener; The lower end of the top reinforcing rib of the chiller frame has a first flange, which is inserted into the top heat insulation connection component.

6. The gate end according to claim 5, characterized in that, The top reinforcing rib of the refrigeration unit frame and the top reinforcing rib of the door are an integral structure; Alternatively, the top reinforcing rib of the refrigeration unit frame may be a first L-shaped component.

7. The gate end according to claim 4, characterized in that, The lower end of the bottom reinforcing rib of the chiller frame is connected to the upper end of the bottom reinforcing rib of the door; The door bottom reinforcing rib is connected to the outer door panel by a second fastener; The upper end of the bottom reinforcing rib of the chiller frame has a second flange, which is inserted into the bottom heat insulation connection component.

8. The gate end according to claim 7, characterized in that, The bottom reinforcing rib of the refrigeration unit frame and the bottom reinforcing rib of the door are an integral structure; Alternatively, the bottom reinforcing rib of the chiller frame may be a first L-shaped component.

9. The gate end according to claim 3, characterized in that, With the chiller installed on the outer side of the outer door panel, a first pre-embedded nut is provided on the side of the door side reinforcing rib near the inner door panel. A first bolt passes through the chiller, the outer door panel, and the door side reinforcing rib in sequence and is threaded to the first pre-embedded nut. A second pre-embedded nut is provided on the side of the door middle reinforcing rib near the inner door panel. A second bolt passes through the outer door panel and the door middle reinforcing rib in sequence and is threaded to the second pre-embedded nut. Alternatively, with the chiller installed from the inside side of the inner door panel, a third pre-embedded nut is provided on the inner door panel near the door side reinforcing rib, and a third bolt is used to pass through the inner door panel of the chiller in sequence and then be threaded to the third pre-embedded nut; a fourth pre-embedded nut is provided on the inner door panel near the door center reinforcing rib, and a fourth bolt is used to pass through the fourth connecting hole of the fourth connector connected to the chiller, the inner door panel in sequence, and then be threaded to the fourth pre-embedded nut.

10. A refrigerated container, characterized in that, Includes the gate end as described in any one of claims 1 to 9.