Door body structure for container and container
By installing a central pillar and multiple layers of seals in the container door, the problems of cold leakage, air leakage, and poor insulation performance of aviation containers are solved, thereby improving airtightness and insulation performance and adapting to pressure difference changes during transportation.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- QINGDAO HB TEMPCON AVIATION CO LTD
- Filing Date
- 2026-01-29
- Publication Date
- 2026-04-28
AI Technical Summary
The existing sealing structure of air containers cannot effectively block the flow of air between the inside and outside of the container, resulting in cold and air leakage, poor insulation performance, failure to meet the transportation requirements of temperature and humidity sensitive goods, and inability to withstand the pressure difference between the inside and outside of the container, resulting in poor sealing performance.
A central pillar is installed in the door structure of the container. The central pillar is located on the side of the center seam facing the inside of the container, forming an embedded installation. The position of the central pillar is stabilized by constructing a groove on the inside of the door. Combined with multi-layer seals and a detachable connection structure, the airtightness and thermal insulation performance are improved.
It effectively blocks the exchange of air between the inside and outside of the box, improves thermal insulation performance, reduces transportation energy consumption, meets temperature and humidity preservation requirements, withstands pressure difference, avoids interference when opening and closing the door, and improves sealing reliability and structural stability.
Smart Images
Figure CN121929448A_ABST
Abstract
Description
Technical Field
[0001] This application relates to the field of container technology, for example to a door structure for a container and a container. Background Technology
[0002] Currently, air containers are crucial equipment for carrying goods (such as vaccines, blood, reagents, and other temperature and humidity-sensitive materials) in air transport. The proportion of goods highly sensitive to temperature, humidity, and gaseous environments, such as vaccines, blood, reagents, and biological samples, is increasing in air transport. The activity, efficacy, and stability of these goods rely on strict environmental control, and sealing performance is the fundamental line of defense for environmental control. If the seal fails, air will freely exchange between the inside and outside of the container, disrupting the constant temperature environment inside. The intrusion of high-temperature, low-temperature, or humid air from the outside can cause problems such as vaccine inactivation, blood deterioration, and changes in reagent concentration. This can not only lead to the complete loss of the goods' value but may also cause serious consequences such as medical accidents and deviations in scientific research data. At the same time, a good seal can prevent external dust, impurities, microorganisms, and other contaminants from entering the container, avoiding contamination of the goods. This is especially important for goods such as sterile medical devices and precision electronic components, where sealing is crucial to ensuring cleanliness during transportation.
[0003] In related technologies, the door sealing structure of aviation containers sometimes uses a single sealing solution: some products have a rubber door seal strip around the door and in the middle seam, while others use finned sealing strips.
[0004] In the process of implementing the embodiments of this disclosure, at least the following problems were found in the related art: In related technologies, single-seal rubber strips can only achieve basic rain protection and cannot prevent air circulation between the inside and outside of the container, resulting in significant cold and air leakage problems, extremely poor thermal insulation performance, and consequently, excessive energy consumption during transportation, making it difficult to meet the temperature and humidity preservation requirements of sensitive goods. Finned sealing strips have weak sealing effects, cannot withstand the pressure difference between the inside and outside of the container, cannot achieve airtight sealing, and still have serious heat leakage problems.
[0005] It should be noted that the information disclosed in the background section above is only used to enhance the understanding of the background of this application, and therefore may include information that does not constitute prior art known to those skilled in the art. Summary of the Invention
[0006] To provide a basic understanding of some aspects of the disclosed embodiments, a brief summary is given below. This summary is not intended as a general commentary, nor is it intended to identify key / important components or describe the scope of protection of these embodiments, but rather as a prelude to the detailed description that follows.
[0007] This disclosure provides a door structure for a container and a container to improve the sealing effect of an aviation container.
[0008] This disclosure provides a door structure for a container. The container includes a body with a door opening. The door structure includes: a first door movably disposed at the door opening; a second door movably disposed at the door opening, wherein when both the first and second doors are closed, a central seam is formed between the first and second doors; and a door center post disposed on the first door. When the first and second doors are closed, the door center post is disposed on the side of the central seam facing the inside of the container to seal the central seam.
[0009] In some alternative embodiments, the first door has a first groove on the side facing the inside of the cabinet, and the second door has a second groove on the side facing the inside of the cabinet. When both the first door and the second door are closed, the first groove and the second groove are connected to form a mounting groove, and the door center post is located in the mounting groove.
[0010] In some alternative embodiments, the inner end of the door center post protrudes beyond the inner end of the mounting groove.
[0011] In some alternative embodiments, the central pillar of the door is movably connected or fixedly connected to the first door body.
[0012] In some optional embodiments, the door structure further includes: a rotating shaft; a first connecting plate connected to the first door body and rotatably sleeved on the outside of the rotating shaft; and a second connecting plate connected to the central pillar of the door and rotatably sleeved on the outside of the rotating shaft, wherein the second connecting plate is rotatably connected to the first connecting plate.
[0013] In some alternative embodiments, the door structure for the container further includes: a first connector having a first door body and a first connecting hole; a second connector having a second connecting hole located on the central post of the door; and a connecting rope having one end passing through the first connecting hole and connected to the first connector, and the other end passing through the second connecting hole and connected to the second connector.
[0014] In some alternative embodiments, the central pillar of the door is detachably connected to the first door body.
[0015] In some alternative embodiments, the door structure for the container further includes: a first seal disposed on the side of the first door facing the door center post; a second seal disposed on the side of the second door facing the container opening; wherein, when the first and second doors close the container opening, both the first and second seals are pressed and sealed against the wall surface of the door center post away from the container opening; and / or, further includes: The third sealing element is located on the outside of the second door body; When the first and second doors close the cabinet opening, the other end of the third sealing element is attached to the outside of the first door to seal the outside of the central seam.
[0016] This disclosure also provides a container, which includes a door structure for a container as described in any of the above embodiments.
[0017] In some alternative embodiments, the container further includes: a container body having a cabinet opening, with a door structure movably disposed at the cabinet opening; wherein the container body is constructed with a limiting groove located at the upper and / or lower part of the cabinet opening, and when the first door and the second door close the cabinet opening, the door center post is located within the limiting groove.
[0018] The door structure and container provided in this disclosure can achieve the following technical effects: In this embodiment, a door center post is installed on the side of the central seam facing the inside of the container. When the door is closed, the central seam between the first and second doors is sealed by the door center post. The door center post prevents air from flowing between the inside and outside of the container, avoiding significant cold and air leakage problems, improving insulation performance, reducing energy consumption during transportation, and meeting the temperature and humidity preservation requirements of various goods. Furthermore, the door center post can withstand the pressure difference between the inside and outside of the container, achieving an airtight seal and solving the heat leakage problem. In addition, the door center post is located on the first door, eliminating the need for additional complex connecting components and avoiding increased door opening and closing resistance due to structural redundancy. Simultaneously, the door center post can open with the door, without adding extra interference during the opening and closing process, and without affecting the entry and exit of goods at the container opening.
[0019] The above general description and the description below are exemplary and illustrative only and are not intended to limit this application. Attached Figure Description
[0020] One or more embodiments are illustrated by way of example with reference to the accompanying drawings. These illustrations and drawings do not constitute a limitation on the embodiments. Elements having the same reference numerals in the drawings are shown as similar elements. The drawings are not to be scaled. And wherein: Figure 1 This is a schematic diagram of the structure of a container provided in an embodiment of this disclosure; Figure 2 This is a schematic diagram from one perspective of a door structure provided in an embodiment of this disclosure; Figure 3 This is a schematic diagram of another door structure provided in an embodiment of this disclosure; Figure 4 This is a schematic diagram of another door structure provided in an embodiment of this disclosure; Figure 5 This is a schematic diagram of a door structure from another perspective, provided in an embodiment of this disclosure; Figure 6 yes Figure 5 A schematic cross-sectional view along the AA direction; Figure 7 This is one of the embodiments provided in this disclosure. Figure 6 A magnified structural diagram of part A in the middle; Figure 8 This is one of the embodiments provided in this disclosure. Figure 6 A magnified structural diagram of part B in the middle section; Figure 9 This is a schematic diagram of the cooperation structure between a box and a door column provided in an embodiment of this disclosure.
[0021] Figure label: 10. First door body; 11. First groove; 12. First seal; 13. First airbag; 20. Second door body; 21. Second groove; 22. Second seal; 23. Second airbag; 30. Door center post; 31. Connecting component; 32. Connecting rope; 321. First connector; 322. Second connector; 33. First connecting plate; 34. Second connecting plate; 35. Center seam; 40. Third seal; 41. First fin; 42. Second fin; 43. Fourth seal; 44. Third fin; 45. Fourth fin; 50. Fifth seal; 51. First front seal; 511. First sealing section; 512. Second sealing section; 52. First side seal; 52. Inner shell; 53. Outer shell; 60. Box body; 61. Cabinet opening; 62. Limiting groove. Detailed Implementation
[0022] To provide a more detailed understanding of the features and technical content of the embodiments of this disclosure, the implementation of the embodiments of this disclosure will be described in detail below with reference to the accompanying drawings. The accompanying drawings are for illustrative purposes only and are not intended to limit the embodiments of this disclosure. In the following technical description, for ease of explanation, several details are used to provide a full understanding of the disclosed embodiments. However, one or more embodiments may still be implemented without these details. In other cases, well-known structures and devices may be simplified in their depiction to simplify the drawings.
[0023] The terms "first," "second," etc., used in the specification, claims, and accompanying drawings of this disclosure are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate for describing embodiments of this disclosure herein. Furthermore, the terms "comprising" and "having," and any variations thereof, are intended to cover non-exclusive inclusion.
[0024] In this disclosure, the terms "upper," "lower," "inner," "middle," "outer," "front," and "rear," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. These terms are primarily for better description of the embodiments of this disclosure and their implementations, and are not intended to limit the indicated devices, elements, or components to having a specific orientation, or to require them to be constructed and operated in a specific orientation. Furthermore, some of the aforementioned terms may be used to indicate other meanings besides orientation or positional relationship; for example, the term "upper" may in some cases indicate a dependency or connection relationship. Those skilled in the art can understand the specific meaning of these terms in the embodiments of this disclosure according to the specific circumstances.
[0025] Furthermore, the terms "set up," "connect," and "fix" should be interpreted broadly. For example, "connection" can be a fixed connection, a detachable connection, or an integral structure; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, or it can be an internal connection between two devices, components, or parts. Those skilled in the art can understand the specific meaning of the above terms in the embodiments of this disclosure according to the specific circumstances.
[0026] Unless otherwise stated, the term "multiple" means two or more.
[0027] The term "and / or" describes an association between objects, indicating that three relationships can exist. For example, A and / or B means: A or B, or A and B.
[0028] It should be noted that, unless otherwise specified, the embodiments and features described in the present disclosure can be combined with each other.
[0029] Combination Figures 1 to 9 As shown, this embodiment of the present disclosure provides a door structure for a container. The container includes a container body 60 and a door structure. The container body 60 has a door opening 61. The door structure includes a first door 10, a second door 20, and a door center post 30. The first door 10 is movably disposed at the door opening 61. The second door 20 is movably disposed at the door opening 61. When both the first door 10 and the second door 20 close the door opening 61, a central seam 35 is formed between the first door 10 and the second door 20. The door center post 30 is disposed on the first door 10. When the first door 10 and the second door 20 close the door opening 61, the door center post 30 is disposed on the side of the central seam 35 facing inward towards the container body 60, for sealing the central seam 35.
[0030] In this embodiment, the first door 10 and the second door 20 are movably disposed at the cabinet opening 61, and the first door 10 and the second door 20 can open or close the cabinet opening 61. When both the first door 10 and the second door 20 are in the closed position of the cabinet opening 61, the door gap between the first door 10 and the second door 20 can be sealed by the door center post 30, effectively blocking the exchange of air and heat between the inside and outside of the container, improving the container's insulation and airtightness, and ensuring the temperature and humidity stability during the transportation of sensitive goods such as vaccines and blood. The door center post 30 is located inside the container 60 and can withstand the pressure difference between the inside and outside of the container, achieving airtight sealing and solving the problem of heat leakage. In addition, the door center post 30 is disposed on the first door 10, eliminating the need for additional complex connecting parts and avoiding increased resistance to opening and closing the door due to structural redundancy. At the same time, the door center post 30 can open with the door, without adding additional interference during the opening and closing process, and without affecting the entry and exit of goods at the cabinet opening 61.
[0031] Optionally, such as Figure 7 As shown, the first door 10 has a first groove 11 on the side facing the inside of the cabinet 60, and the second door 20 has a second groove 21 on the side facing the inside of the cabinet 60. When both the first door 10 and the second door 20 are closed at the cabinet opening 61, the first groove 11 and the second groove 21 are connected to form an installation groove, and the door center post 30 is located in the installation groove.
[0032] In this embodiment, a first groove 11 and a second groove 21 are respectively constructed on the side of the first door body 10 and the second door body 20 facing the inner side of the housing 60. When closed, they form a mounting groove for accommodating the door center post 30, thus achieving embedded installation of the door center post 30. The mounting groove can provide circumferential restraint for the door center post 30, ensuring its stable position during transportation (especially under the turbulence and pressure changes of air transport), preventing sealing failure due to displacement, and significantly improving sealing reliability. Simultaneously, the groove structure design makes the connection between the door center post 30 and the door body tighter, eliminating gaps between the door body and the door center post 30, further blocking cold and air leakage paths. Furthermore, the embedded structure avoids interference problems caused by the door center post 30 protruding excessively from the door body, ensuring a snug fit when the door is closed and reducing opening and closing resistance. In addition, the first groove 11 and the second groove 21 make the door central column 30, the first door body 10 and the second door body 20 form an integrated sealing structure, which solves the problem of sealing discontinuity when the central seam 35 of the traditional compression door seal is not on the same plane as the door sealing surface, and constructs a complete and continuous sealing barrier, which greatly improves the heat preservation and energy saving effect and reduces the energy waste caused by the high-load operation of refrigeration equipment.
[0033] Optionally, the first door 10 is recessed in a direction away from the box 60 to form a first groove 11, and the second door 20 is recessed in a direction away from the box 60 to form a second groove 21.
[0034] Optionally, the inner end of the door center post 30 protrudes beyond the inner end of the mounting groove.
[0035] In this embodiment, the inner end of the door center post 30 protrudes beyond the inner end of the mounting groove, which further enhances the sealing effect and structural adaptability. The protruding structure at the inner end of the door center post 30 allows it to contact the inner side of the housing 60 when the first door 10 and the second door 20 are closed, enabling the door center post 30 to be compressed by the housing 60. This increases the sealing pressure of the door center post 30, improves the tightness of the fit between the door center post 30 and the first door 10 and the second door 20, effectively resisting the pressure difference between the inside and outside of the housing during air transport. This solves the technical problem that finned sealing strips cannot withstand pressure differences, achieving reliable airtight sealing. Simultaneously, the protruding end of the door center post 30 can form an auxiliary limiting mechanism with the relevant structures inside the housing 60, enhancing the overall structural stability after the door is closed and preventing slight displacement of the door due to air pressure fluctuations or transport bumps, which could lead to sealing failure. In addition, the protruding structure can guide the positioning of the door when it is closed, making the connection between the first and second door bodies 20 and the door center post 30 more precise, reducing sealing deviation, further reducing the risk of cold and air leakage, providing a more stable transportation environment for sensitive goods, while not affecting the normal opening and closing of the door and the loading and unloading of goods, achieving an efficient balance between sealing performance and practicality.
[0036] Optionally, the central pillar 30 is movably connected to or fixedly connected to the first door body 10.
[0037] In this embodiment, when the door center post 30 and the first door body 10 are fixedly connected, the door center post 30 and the first door body 10 form a stable integrated structure, resulting in more stable sealing performance. Furthermore, the structure is simple, the failure rate is low, and maintenance costs are reduced. When the door center post 30 and the first door body 10 are movably connected, the door center post 30 can adjust its angle or make slight displacements according to actual usage requirements. When the door is closed, it can adaptively fit the center seam 35, compensating for minor errors generated during door processing or assembly, avoiding sealing gaps caused by dimensional deviations, and improving the sealing tolerance rate.
[0038] Optionally, the door structure also includes a connecting member 31, through which the first door body 10 and the door center post 30 are connected. The connecting member 31 can not only connect the first door body 10 and the door center post 30, but also enable the first door body 10 and the door center post 30 to be movably connected.
[0039] Optionally, the central pillar 30 extends along the height direction of the first door body 10 and the second door body 20, and the height of the central pillar 30 is adapted to the height of the first door body 10 and the second door body 20.
[0040] Optionally, the connecting member 31 is connected to the side wall of the door central post 30 that protrudes from the first door body 10.
[0041] Optionally, there may be multiple connecting members 31, which are arranged at intervals along the length of the door center post 30. This can improve the connection stability of the door center post 30.
[0042] Optionally, the connecting member 31 includes a rotating shaft, a first connecting plate 33, and a second connecting plate 34; the first connecting plate 33 is connected to the first door body 10 and is rotatably sleeved on the outside of the rotating shaft; the second connecting plate 34 is connected to the door center post 30 and is rotatably sleeved on the outside of the rotating shaft, and the second connecting plate 34 is rotatably connected to the first connecting plate 33.
[0043] In this embodiment, the rotating connection structure allows the door center post 30 to rotate flexibly around the rotation axis. When the door is open, the door center post 30 can rotate synchronously with the first door body 10 without interference, avoiding the problems of bumping and damage to the door center post 30 that may occur with a fixed connection. When the door is closed, the door center post 30 can adaptively fit the center seam 35 during rotation, and the precise alignment of the sealing surface is achieved through the rotation adjustment of the connecting plate, effectively compensating for the positional deviation when the door is closed, ensuring the tight compression between the first sealing element 12 and the door center post 30, and significantly improving the sealing reliability. In addition, the layout of the connecting plate sleeved on the outside of the rotation axis disperses the force, enhances the load-bearing capacity of the connection part, can resist the air pressure changes and vibration impacts in air transport, and extends the service life of the sealing structure. Compared with the traditional complex sealing connection method, this design does not require additional driving components, has a simple structure and strong implementation, solves the problem of difficult door opening and closing, and further optimizes the sealing effect.
[0044] Optionally, the connecting member 31 further includes a first connecting member 321, a second connecting member 322, and a connecting rope 32. The first connecting member 321 is provided with a first door body 10 and has a first connecting hole. The second connecting member 322 is provided on the door center post 30 and has a second connecting hole. One end of the connecting rope 32 passes through the first connecting hole and is connected to the first connecting member 321, and the other end of the connecting rope 32 passes through the second connecting hole and is connected to the second connecting member 322.
[0045] In this embodiment, a flexible limiting connection system between the door center post 30 and the first door body 10 is constructed through the cooperation of the first connector 321, the second connector 322, and the connecting rope 32. This allows the door center post 30 to maintain adequate space for movement during the opening and closing of the door, enabling it to move synchronously with the door while the tension of the rope limits excessive displacement of the door center post 30, preventing it from colliding and being damaged by the door or the housing 60 due to shaking, thus improving structural safety. Simultaneously, when the door is closed, the tension of the connecting rope 32 helps the door center post 30 maintain a preset sealing position, ensuring a tight fit with the first door body 10 and the second door body 20, preventing displacement of the door center post 30 due to transportation bumps, and ensuring the continuity and stability of the seal. Furthermore, this embodiment also solves the problem of insufficient flexibility in traditional fixed connection methods, allowing the door center post 30 to retain a certain degree of self-adjustment capability while providing reliable limiting, compensating for assembly errors and structural deformation during transportation, and further reducing the risk of cold and air leakage. In addition, the connecting rope 32 has a simple structure, low cost, and is easy to assemble and disassemble. Compared with complex mechanical limiting structures, it not only reduces processing and maintenance costs, but also improves product assembly efficiency.
[0046] Optionally, the connecting rope 32 is a steel wire rope.
[0047] In this embodiment, the steel wire rope possesses high strength, tensile strength, abrasion resistance, and is not easily broken. It maintains stable connection performance under harsh environments such as severe vibrations and pressure changes during air transport, effectively limiting excessive displacement of the door center post 30 and preventing it from colliding and being damaged by shaking with the door or housing 60, thus improving structural safety and service life. Simultaneously, the flexibility of the steel wire rope allows the door center post 30 to retain adequate space for movement during door opening and closing. It can move synchronously with the door and, through the tension of the steel wire rope, assist the door center post 30 in maintaining a preset sealing position when closed, ensuring a tight fit between the first door 10, the second door 20, and the door center post 30. This prevents seal failure due to transport bumps and further blocks cold and air leakage paths.
[0048] Optionally, the diameter of the wire rope is 1.5-2.0mm, and the pretension is 50-80N. This limits the excessive rotation of the door center post 30, preventing it from colliding with the door or cabinet, while not restricting its adaptive fine-tuning (such as slight angle adjustments during sealing). When the door is closed, the tension of the wire rope provides continuous tension to the door center post 30, ensuring a tight fit between the door center post 30 and the first seal 12 and the second seal 22. Especially during bumpy transport, the flexible tension of the wire rope buffers vibration and shock, preventing the door center post 30 from instantly separating from the seals, thus solving the problem of easy air leakage in movable connections.
[0049] Optionally, the connecting rope 32 has movable joints at both ends, with a first through hole and a second through hole. Either end of the connecting rope 32 can pass through the first and second through holes. Fasteners pass through the first and second through holes to fix or unlock the connecting rope 32, thus enabling the fixing and unlocking of the connecting rope 32. When the fasteners are inserted into the first and second through holes, they can fix the connecting rope 32 and prevent it from moving. When the fasteners are removed from the first and second through holes, the connecting rope 32 can be removed from the movable structure or its length can be adjusted.
[0050] Optionally, the central pillar 30 of the door is detachably connected to the first door body 10.
[0051] In this embodiment, the door center post 30 is detachably connected to the first door body 10, making the door structure versatile and maintainable. The door center post 30 can be flexibly disassembled and assembled according to actual usage needs. When the door center post 30 shows signs of wear or aging, it can be replaced individually without disassembling the entire door body, reducing maintenance costs and downtime. Simultaneously, users can replace the door center post 30 with different materials and sealing grades according to the characteristics of the transported goods (such as temperature and humidity sensitivity, transport distance), achieving personalized adaptation of sealing performance. Furthermore, the door center post 30 can be flexibly replaced with the second door body 20 according to the user's door opening and closing habits, solving the problem of the non-adjustable door opening and closing sequence in the prior art, adapting to different loading and unloading processes and scenario requirements. In addition, the detachable structure facilitates the disassembly, transportation, and storage of the door body, reducing logistics costs. The assembly process is simple and convenient, requiring no professional tools, improving the user experience and enabling the door structure to achieve optimal sealing performance under different users and working conditions.
[0052] Optionally, the door structure also includes a first sealing element 12 and a second sealing element 22. The first sealing element 12 is located on the side of the first door 10 facing the door center post 30; the second sealing element 22 is located on the side of the second door 20 facing the cabinet opening 61. When the first door 10 and the second door 20 close the cabinet opening 61, both the first sealing element 12 and the second sealing element 22 are pressed and sealed against the wall surface of the door center post 30 away from the cabinet opening 61.
[0053] In this embodiment, when the first door 10 and the second door 20 close the cabinet opening 61, both the first sealing element 12 and the second sealing element 22 are pressed and sealed against the wall surface of the door center post 30 away from the cabinet opening 61, forming an inner core sealing barrier. The characteristics of the compression seal enhance the tightness of the sealing surface, effectively resisting the pressure difference between the inside and outside of the container during air transport, thus solving the problem that finned sealing strips cannot achieve airtight sealing. Simultaneously, the two sealing elements correspond to the mating parts of the first door 10 and the second door 20 with the door center post 30, ensuring that there are no dead angles in the seal on both sides of the central seam 35, completely blocking the paths for cold and air leakage.
[0054] Optionally, the front end of the first sealing member 12 is connected to the first door body 10, and the rear end of the first sealing member 12 is provided with a first airbag 13. There are multiple first airbags 13, which are arranged sequentially at intervals along the length direction of the first door body 10. The multiple first airbags 13 are squeezed between the first door body 10 and the door center post 30.
[0055] Optionally, the front end of the second seal 22 is connected to the second door body 20, and the rear end of the second seal 22 is provided with a second airbag 23. There are multiple second airbags 23, which are arranged at intervals along the length of the second door body 20. The multiple second airbags 23 are squeezed between the second door body 20 and the door center post 30.
[0056] Optionally, the first airbag 13 and the second airbag 23 are on the same plane, so that the front wall surface of the door pillar 30 can be squeezed against the first airbag 13 and the second airbag 23 and form a continuous seal on the same plane, avoiding the interruption of the seal and improving the sealing effect.
[0057] Optionally, the door structure also includes a third seal 40, which is located on the outside of the second door 20; wherein, when the first door 10 and the second door 20 close the cabinet opening 61, the third seal 40 seals the outside of the center seam 35.
[0058] In this embodiment, the third seal 40 is sealed to the outside of the central seam 35, forming secondary protection. This prevents external rainwater, dust, impurities, etc., from intruding, avoiding contamination or damage to the inner seal, extending the service life of the sealing structure, and further reducing the interference of external airflow on the inner sealing environment, thus improving the insulation effect. This multi-seal collaborative design breaks through the limitations of traditional single seals. Through functional zoning (the inner side focuses on insulation and airtightness, while the outer side focuses on protection), it achieves comprehensive optimization of sealing performance. It can meet the stringent requirements of high insulation and airtightness in air transport, adapt to complex external environments, and the installation of the seals does not affect door opening and closing or loading and unloading operations.
[0059] Optionally, the third seal 40 includes a first fin 41 and a second fin 42. The first fin 41 is connected to the second door 20. When the first door 10 and the second door 20 are closed, the second fin 42 fits against the outside of the first door 10, thus achieving the sealing of the middle seam 35 between the first door 10 and the second door 20 by the third seal 40.
[0060] In practical applications, when closing the first door 10 and the second door 20, the door center post 30 connected to the first door 10 is first moved to the first groove 11, and the door is pushed towards the housing 60. When the door center post 30 is connected to the housing 60, the door and the housing 60 press the door center post 30 in place, thus fixing the door center post 30. At the same time, the second door 20 is moved towards the housing 60, and the second door 20 can abut against the door center post 30. In this way, the door center post 30 can be located in the second groove 21. Thus, the first sealing element 12 is pressed between the door center post 30 and the first door 10, the second sealing element 22 is pressed between the door center post 30 and the second door 20, and the third sealing element 40 seals the outside of the first door 10 and the second door 20, achieving double sealing inside and outside.
[0061] In this application, after the first door 10 and the second door 20 are closed, the first groove 11 and the second groove 21 form a complete mounting groove, and the door center post 30 is embedded in the groove to achieve circumferential limiting. This makes the door center post 30 form a surface contact with the sealing surface of the door body, rather than the line contact of traditional sealing, which greatly reduces the sealing gap; at the same time, the groove wall of the mounting groove forms a lateral constraint on the door center post 30, preventing the door center post 30 from shifting laterally due to transportation bumps, and providing a stable basis for air pressure adaptive sealing. The inner end of the door center post 30 protrudes from the inner end of the mounting groove. When the container is in a sealed state, if there is positive pressure inside the container (such as internal equipment heat dissipation, air inflation for preservation), the positive pressure airflow acts on the inner side wall of the protruding part of the door center post 30, generating an outward thrust, forcing the inner end of the door center post 30 to fit tightly against the inside of the container body 60. At the same time, the compressive pressure of the outer side wall of the door center post 30 and the first sealing element 12 and the second sealing element 22 increases synchronously, achieving a sealing state where the positive pressure tightens. If the inside of the box is under negative pressure (such as when the air contracts due to cooling and the outside air pressure is higher than the inside air pressure), the outside air pressure acts on the outer wall of the protruding part of the door column 30 (transmitted through the gap in the center seam 35), generating inward pressure, pushing the door column 30 to move inward toward the inside of the box body 60, further compressing the airbag structure of the first seal 12 and the second seal 22, making the sealing surfaces fit more tightly, and achieving a tighter seal due to the negative pressure.
[0062] In related technologies, the sealing structure of a container door cannot be adjusted once assembled, and the seal will fail if the pressure difference exceeds the preload threshold. However, the proposed solution utilizes the structure of the door center post 30, its protruding structure, and the airbag structure of the first seal 12 and the second seal 22. This allows the door center post 30 to adapt to changes in air pressure, with the pressure difference between the inside and outside of the container becoming a supplementary source of sealing force. The greater the pressure difference, the stronger the sealing force, thus solving the technical pain point of related technologies that cannot withstand pressure differences. Simultaneously, the combination of the protruding structure and the embedded installation ensures both dynamic adaptability of the seal and avoids structural interference caused by excessive displacement of the door center post 30, achieving a balance between sealing reliability and structural compatibility.
[0063] Optionally, the door structure also includes a fourth seal 43, which is disposed on the first door 10. When the first door 10 and the second door 20 are closed, the fourth seal 43 can cooperate with the third seal 40 to seal. This can further improve the sealing effect of the first door 10 and the second door 20.
[0064] Optionally, the fourth sealing element 43 includes a third fin 44 and a fourth fin 45. The third fin 44 is located on the side of the first door 10 facing the second door 20, and the fourth fin 45 is located on the front side of the first door 10. The third fin 44 is provided with an air bladder. When the first door 10 and the second door 20 close the cabinet opening 61, the first fin 41 and the third fin 44 are opposite to each other and sealed together. The air bladder of the third fin 44 abuts against the first fin 41, and the second fin 42 is attached to the outside of the fourth fin 45. This can achieve sealing inside and outside the center seam 35, increase the airflow path, and improve the sealing effect.
[0065] Optionally, the third seal 40 is detachably connected to the second door body 20, which facilitates the disassembly, installation and maintenance of the third seal 40, and also facilitates changing the installation position of the third seal 40.
[0066] Optionally, the second door 20 is provided with a first mounting part for mounting the connecting member 31. This allows the connecting member 31 of the first door 10 to be disassembled and installed on the second door 20 when the user's usage habits or usage environment change. In other words, the connecting member 31 can be selectively installed on either the first door 10 or the second door 20 to meet different usage needs.
[0067] Optionally, the third seal 40 can be installed on either the first door body 10 or the second door body 20. Specifically, when the connecting member 31 is installed on the first door body 10, the third seal 40 is located on the second door body 20. When the connecting member 31 is installed on the second door body 20, the third seal 40 is located on the first door body 10 to accommodate different closing sequences of the first door body 10 and the second door body 20.
[0068] In this application, after the first seal 12 and the second seal 22 are squeezed and sealed with the door center post 30, the door center post 30, the first seal 12 and the second seal 22 are located on the side of the door facing the box 60, and the multiple air bladders of the first seal 12 and the second seal 22 are spaced apart, forming a continuous airtight band after compression, blocking air convection and improving the airtightness and heat insulation of the inner side. The third seal 40 has a double-fin structure, with the first fin 41 attached to the second door body 20 and the second fin 42 attached to the outer side of the first door body 10, forming the first physical barrier to block rainwater, dust and microorganisms from intruding and preventing the inner seal from being contaminated and aging. The third fin 44 with airbag in the fourth seal 43 forms a compression seal with the first fin 41 of the third seal 40, and the fourth fin 45 forms a close seal with the second fin 42 of the third seal 40. This forces the external airflow to pass through four lines of defense in sequence: the second fin 42, the fourth fin 45, the first fin 41, and the third fin 44. The increased path length causes the airflow resistance to increase exponentially, significantly reducing the leakage rate. The aforementioned seals and the door pillar 30 work together. The door pillar 30, the first seal 12, and the second seal 22 on the inner side of the door structure focus on airtightness and heat preservation, while the outer seals focus on protective sealing, preventing the high-precision airtight seals on the inner side from directly contacting external pollutants and extending their service life. At the same time, the outer third seal 40 can alleviate the direct impact of airflow on the inner seals, reducing wear on the inner seals. If a single seal is slightly damaged (such as deformation of the third seal 40 fin), the remaining seals can still maintain basic sealing performance, avoiding the risk of the entire door seal failing due to damage to a single traditional seal, and improving the reliability of the sealing structure.
[0069] Optionally, the air bladders of the first seal 12, the second seal 22, and the third seal 40 are made of closed-cell foamed rubber with a thermal conductivity ≤0.03W / (m²). K), which has both sealing and heat preservation functions.
[0070] Optionally, one end of the first door 10 and one end of the second door 20 can form a central seam 35 when closed, and the other end of the door is rotatably connected to the box 60, the other end of the second door 20 is rotatably connected to the box 60, and the other end of the door is rotatably connected to the box 60.
[0071] Optionally, the first door 10 and the second door 20 are defined as doors, and the other end of the doors and the other end of the second door 20 are defined as the other end of doors. A fifth sealing element 50 is provided between the other end of the door and the cabinet 60. The fifth sealing element 50 includes a first front sealing element 51 and a first side sealing element 52. When the cabinet opening 61 is closed, an L-shaped gap is formed between the other end of the door and the cabinet 60. The L-shaped gap includes a first gap and a second gap. The first gap extends in the front-to-back direction, and the second gap extends in the length direction of the door. The first front sealing element 51 is located in the first gap and seals the front end of the first gap, and the first side sealing element 52 is located in the second gap and seals the second gap. The first side sealing element 52 includes multiple airbags, which can compress and seal between the cabinet 60 and the first door 10 to prevent cold leakage. The first front seal 51 includes a first sealing section 511 and a second sealing section 512. The first sealing section 511 is located within the first gap, and the second sealing section 512 is located on the front side of the first gap and fits against the cabinet body 60 and the first door body 10. The first sealing section 511 is equipped with an air bladder, which compresses and seals between the cabinet body 60 and the first door body 10. Thus, the first seal 12 can seal the cabinet opening 61 and the first door body 10 from both inside and outside the first gap. The first front seal 51 and the first side seal 52 achieve a double seal between the inner and outer sides of the cabinet body 60 and the first door body 10, improving the sealing effect between the other end of the door and the cabinet body 60.
[0072] Optionally, such as Figure 8 As shown, the door body includes an inner shell 52 and an outer shell 53. The outer shell 53 is located outside the inner shell 52. A cavity is formed between the outer shell 53 and the inner shell 52. The cavity is located outside the first gap. The first front seal 51 is located in the first cavity. The outer shell 53 is rotatably connected to the housing 60.
[0073] In this embodiment, the outer shell 53 connects the door to the housing 60, the inner shell 52 ensures the thickness and strength of the door, the first side seal 52 is located between the inner shell 52 and the housing 60, and the first sealing section 511 of the first front seal 51 is located between the inner shell 52 and the housing 60, with the first sealing section 511 situated between the front wall of the housing 60 and the front wall of the inner shell 52 and the outer shell 53. This not only improves the sealing effect between the door and the housing 60 but also ensures the rotatable connection between the door and the housing 60.
[0074] Optionally, the outer casing 53 and the inner casing 52 are detachably connected.
[0075] Optionally, the outer shell 53 and the inner shell 52 can be detachably connected by screws or the like.
[0076] This disclosure also provides a container, which includes a door structure for a container as described in any of the above embodiments.
[0077] Optionally, such as Figure 9 As shown, the container also includes a container body 60, which has a cabinet opening 61 and a door structure located at the cabinet opening 61. The container body 60 is constructed with a limiting groove 62, which is located at the upper and / or lower part of the cabinet opening 61. When the first door 10 and the second door 20 close the cabinet opening 61, the door center post 30 is located within the limiting groove 62.
[0078] In this embodiment, by constructing limiting grooves 62 on the upper and / or lower parts of the container opening 61 of the container body 60, and with the door center post 30 located within the limiting grooves 62 when closed, multi-directional limiting and fixing of the door center post 30 is achieved, further enhancing the sealing performance and structural stability of the container. The limiting grooves 62 precisely position the upper and lower ends of the door center post 30, preventing the door center post 30 from shifting or tilting during transportation (especially under the severe vibration and air pressure changes of air transport), ensuring that the door center post 30 maintains a tight fit with the first sealing element 12 and the sealing element of the second door body 20, eliminating sealing gaps caused by the displacement of the door center post 30, and significantly improving sealing reliability. At the same time, the cooperation between the limiting grooves 62 and the door center post 30 forms a longitudinal support structure, enhancing the overall rigidity of the door body after closure, resisting the force of the pressure difference between the inside and outside of the container on the door body, preventing door deformation, and extending the service life of the container. This design also guides precise alignment during door closing, reducing the difficulty of closing the door and improving operational convenience. Furthermore, the construction of the limiting groove 62 does not affect the container's internal loading space or external dimensional compatibility. Through the collaboration between the limiting groove 62 and the door center post 30, the container's sealing structure forms a complete system of lateral sealing and longitudinal limiting, solving the shortcomings of traditional sealing structures that only focus on sealing while neglecting structural stability. This creatively enhances the overall performance of the container, providing a safer, more stable, and reliable guarantee for cargo transportation.
[0079] Optionally, the container is an air container.
[0080] The foregoing description and accompanying drawings fully illustrate embodiments of the present disclosure to enable those skilled in the art to practice them. Other embodiments may include structural and other changes. The embodiments represent only possible variations. Individual components and functions are optional unless explicitly required, and the order of operation may vary. Parts and features of some embodiments may be included or substituted for parts and features of other embodiments. Embodiments of the present disclosure are not limited to the structures described above and shown in the accompanying drawings, and various modifications and changes may be made without departing from its scope. The scope of the present disclosure is limited only by the appended claims.
Claims
1. A door structure for a container, the container comprising a body having a door opening, characterized in that, The door structure includes: The first door is located at the counter opening; The second door is movable at the cabinet opening. When both the first and second doors are closed, a gap is formed between the first and second doors. The central pillar of the gate is located on the first gate section; When the first and second doors are closed, the central post of the door is located on the side of the central seam facing the inside of the cabinet to seal the central seam.
2. The door structure for a container according to claim 1, characterized in that, The first door has a first groove on the side facing the inside of the cabinet, and the second door has a second groove on the side facing the inside of the cabinet. When both the first and second doors are closed, the first and second grooves connect to form a mounting groove, and the central post of the door is located in the mounting groove.
3. The door structure for a container according to claim 2, characterized in that, The inner end of the central pillar of the door protrudes beyond the inner end of the mounting groove.
4. The door structure for a container according to claim 1, characterized in that, The central pillar of the door is either movably or fixedly connected to the first door body.
5. The door structure for a container according to claim 1, characterized in that, The door structure also includes: Rotating shaft; The first connecting plate is connected to the first door body and is rotatably sleeved on the outside of the rotating shaft; The second connecting plate is connected to the central pillar of the door and is rotatably sleeved on the outside of the rotating shaft. The second connecting plate is rotatably connected to the first connecting plate.
6. The door structure for a container according to claim 1, characterized in that, Also includes: The first connector has a first door body and a first connecting hole; The second connector is located on the central post of the door and has a second connecting hole. The connecting rope has one end threaded through the first connecting hole and connected to the first connecting member, and the other end threaded through the second connecting hole and connected to the second connecting member.
7. The door structure for a container according to claim 1, characterized in that, The central pillar of the door is detachably connected to the first door body.
8. The door structure for a container according to any one of claims 1 to 7, characterized in that, Also includes: The first sealing element is located on the side of the first door body facing the central pillar of the door; The second sealing element is located on the side of the second door facing the cabinet opening; When the first and second doors close the cabinet opening, both the first and second sealing elements are pressed against the wall surface of the door center post away from the cabinet opening to create a seal; and / or, Also includes: The third sealing element is located on the outside of the second door body; When the first and second doors close the cabinet opening, the other end of the third sealing element is attached to the outside of the first door to seal the outside of the central seam.
9. A container, characterized in that, Includes a door structure for a container as described in any one of claims 1 to 8.
10. The container according to claim 9, characterized in that, Also includes: The cabinet has a cabinet opening, and the door structure is movable at the cabinet opening; The cabinet has a limiting groove located at the top and / or bottom of the cabinet opening. When the first and second doors close the cabinet opening, the central column of the door is located within the limiting groove.