Container with vinyl cover airtight door

Abstract

The present invention relates to a container wherein the container floor is configured by a bent steel base, thereby blocking external air from entering the container, and doors are configured as airtight doors that block the inflow of external air, thereby maintaining the internal humidity of the container below a certain level. The airtight door structure to this end comprises: a rear frame provided on the rear surface of the container body; a mounting groove recessed inward from the surface of the rear frame; a quadrangular frame mounted in the mounting groove, made of rubber, and configured in a quadrangular frame shape; a door mounted on the rear surface of the container; a vinyl cover and an airtight frame disposed between the quadrangular frame and the door; and first and second protrusions formed on the quadrangular frame and the airtight frame, respectively, so as to protrude toward each other. If the airtight frame is pressed toward the quadrangular frame, the vinyl cover is fitted and coupled between the first and second protrusions, thereby ensuring the overall airtightness of the container interior.

Description

Container with vinyl-covered airtight door

[0001] The present invention relates to a container equipped with an airtight door using a vinyl cover, and relates to an airtight door structure of a non-powered container that prevents outside air from entering through the container door and maintains the humidity inside the container below a certain level without separate power.

[0002] Typically, containers are used to transport a variety of cargo. Large cargo that cannot fit inside a container or cargo requiring refrigerated or frozen transport is packaged specially, and numerous specialized containers have been developed and are in use for this purpose.

[0003] For example, for large cargo that is difficult to accommodate inside a container, special packaging is done using a flat rack container with the ceiling and side walls removed or an open top container with the ceiling open.

[0004] In addition, in the case of frozen or refrigerated cargo, transportation is carried out through reefer containers equipped with an insulated interior space and a refrigerator, and the transport is carried out with the power connected to maintain cold air.

[0005] On the other hand, transportation of general cargo, excluding special containers such as the above, is mainly carried out by general containers called dry containers.

[0006] The above dry container is a welded-steel structure in which each part forming the internal space is individually assembled to provide structural strength and protection against corrosion and external impact.

[0007] The floor of the above dry container is applied with a wooden floor because wood has good elasticity and is easy to repair, and can be easily secured by nailing to the wood in case cargo of various shapes is accommodated.

[0008] However, in the case of wooden floors, if the thick nails driven into the wood are removed after the cargo is transported, large nail holes will be created in the floor, and outside air can enter through these holes. As the wood absorbs and then releases moisture, the cargo stored inside is exposed to moisture, which can easily cause damage to the cargo.

[0009] Meanwhile, technologies have been developed to construct container floors out of steel floors to address the problem of wooden floors having low strength and being prone to defects such as breakage.

[0010] For example, Chinese Utility Model Publication No. CN 2008-20044621 Y “Container base frame structure” discloses a steel floor that is detachably installed on a frame body using corrugated steel plates. That is, in the prior art document CN 2008-20044621 Y, the steel floor that is fixed to the frame body is connected with nails, bolts, or pins, and has a structure in which a sealant is filled in the connection area, so that it can be replaced and installed when necessary.

[0011] However, if fastening is done with nails, bolts, pins, etc. as described above, dehumidification inside the container becomes impossible as outside air may flow into the fastening area.

[0012] In addition, if you want to fix the position of cargo loaded inside, you can fix the cargo by driving nails into the wooden floor of a dry container with a wooden floor, but if it is made of a steel floor, there is the problem that it is difficult to drive nails.

[0013] Meanwhile, a European patent (EP3642064B1) describes a container refreezing unit (specifically, a curtain track sealing adapter) for maintaining airtightness within a container. This device maintains airtightness by injecting nitrogen gas to prevent leakage to keep vegetables fresh inside the container. Injecting nitrogen gas stops the fruits and vegetables from respiration, effectively extending their storage life by three to four times. The purpose of this invention is to prevent nitrogen gas from leaking outside. However, to prevent nitrogen gas from leaking inside the container, a curtain track unit requires separate installation work at the cargo loading site, and a separate tool must be used to insert plastic to complete the airtightness, which is cumbersome. The European patent relates to a separate airtightness unit (track, plastic curtain, and tool for inserting the plastic curtain), and the separate tool required is inconvenient to use.

[0014] Therefore, a container manufacturing technology that does not require additional work while maintaining container confidentiality is needed, and a container technology that has an airtight function in the door and allows airtight work to be completed simply by closing the door is needed.

[0015] Among the global container traffic, dry containers transported for long periods of time by sea account for an overwhelmingly high proportion. However, due to the structure, 100% perfect sealing is not achieved, so a phenomenon called container rain occurs on the inner walls of the container and the cargo, causing fatal damage to the loaded cargo, such as mold, corrosion, oxidation, and warping.

[0016] In particular, expensive machinery equipment made of metal, iron, processed goods, and other iron raw materials are exported and imported through standardized dry containers. Since the surface temperature of such cargo is relatively lower than the temperature of the air inside the container due to its relatively high heat capacity, there is a very high possibility of condensation occurring directly on the surface of the cargo. If air containing salt causes surface condensation during maritime transport, the possibility of oxidation or corrosion of the cargo increases further.

[0017] Therefore, in order to prevent the occurrence of the above condensation phenomenon, one or more packaging methods are used in the logistics field, including vacuum packaging of the product itself, anti-corrosion coating, and injection of anti-mold materials.

[0018] However, the anti-corrosion coating presents the problem of requiring additional work to remove the anti-corrosion coating after transport. Furthermore, the use of anti-corrosion agents does not fundamentally address condensation. Furthermore, the associated packaging and disassembly costs are ultimately passed on to the end consumer, driving up the price of purchased goods.

[0019] The purpose of the present invention is to provide a dehumidifying container structure that prevents internal condensation by blocking the inflow of air from outside the container, securing a sealing performance of the internal space, and maintaining the internal humidity of the container below a certain level.

[0020] The purpose of the present invention is to provide a container door structure that prevents external air from entering by improving the door structure and sealing it to maintain humidity inside the container.

[0021] The present invention blocks external air from entering the interior of the container by configuring the bottom of the container with a steel base in a bent shape, and also blocks external air from entering by configuring the door as an airtight door, thereby maintaining the humidity inside the container below a certain level.

[0022] Looking at the airtight door structure for this, it comprises a rear frame provided on the rear of the container body; a mounting groove formed by recessing inwardly on the surface of the rear frame; a square frame having a square frame shape and made of a flexible material with a smooth surface and mounted in the mounting groove; a door mounted on the rear of the container; a vinyl cover and an airtight frame arranged between the square frame and the door; and a first protrusion and a second protrusion formed by protruding in a direction facing each other from the square frame and the airtight frame, respectively; and when the airtight frame is pressed toward the square frame, the vinyl cover is fitted between the first protrusion and the second protrusion and is coupled, thereby securing airtightness of the entire interior of the container. The square frame is preferably made of a rubber material, for example.

[0023] The present invention also provides a structure including: a rear frame provided on the rear side of a container body; a mounting groove formed by recessing inwardly on a surface of the rear frame; a square frame made of rubber and having a square frame shape and mounted in the mounting groove; a door mounted on the rear side of the container; a vinyl cover disposed between the square frame and the door; and an airtight frame provided on the inner side of the door, made of an elastic material having a square frame shape corresponding to the shape of the square frame, and having a second protrusion that protrudes toward the vinyl cover; When the container door is closed, the vinyl cover is pressed between the square frame and the second protrusion, thereby ensuring airtightness of the entire interior of the container.

[0024] It further includes an upper inlet tube and a lower inlet tube formed transversely on the upper and lower portions of the vinyl cover so that a magnet can be placed inside; and a magnet inserted into the upper inlet tube and the lower inlet tube and having a constant length in the transverse direction.

[0025] The above confidential frame may be configured in a square shape during use, or in a foldable shape that can be folded and stored after use.

[0026] The above rectangular frame further includes a first protrusion protruding toward the vinyl cover from the surface thereof, and when the container door is closed, the vinyl cover is pressed between the first protrusion and the second protrusion, thereby ensuring airtightness of the entire interior of the container.

[0027] The present invention has the advantageous effect of preventing the humidity inside the container from increasing by blocking outside air from entering the container through the above-mentioned airtight door structure, thereby enabling the humidity inside the container to be maintained at a certain level.

[0028] Figure 1 is an overall view of a container according to the present invention.

[0029] Figure 2 is a longitudinal cross-sectional view of a container according to the present invention.

[0030] Figures 3 to 5 show the airtight door structure of a container according to the present invention.

[0031] Figure 6 is a view showing the airtight door structure of a container according to another embodiment of the present invention.

[0032] Fig. 7 is a view of the container door closed as seen from inside the container in the embodiment of Fig. 6.

[0033] Hereinafter, some embodiments of the present invention will be described in detail through exemplary drawings.

[0034] When adding reference signs to components of each drawing, identical components are described with the same signs as much as possible even if they are shown on different drawings.

[0035] In addition, in the description of the embodiments, if it is determined that a specific description of a related known configuration or function hinders the understanding of the embodiments of the present invention, the description is simplified or omitted, and if it is described that a certain component is “equipped with” or “connected to” another component, it should be understood that the component may be directly equipped with or connected to the other component, but another component may also be “equipped with” or “connected” between each component.

[0036] The container according to the present invention uses steel members throughout its floor structure instead of the conventional wood. That is, the container floor of the present invention is formed of a steel base structure having a bent shape, and since it is formed entirely of a single steel plate, the inflow of external air through the floor is blocked, thereby providing an internal space with secured airtightness. This prevents the inflow of moisture due to the inflow of external air, thereby maintaining the humidity inside the container below a certain level. Although not shown, in order to seal the interior of the container, the door on the rear side that opens and closes the inside and outside of the container is provided with a sealing member on the edge, or an air curtain or the like is used so that when the door is closed, the inflow of air through the door edge is completely blocked.

[0037] And, in order to maintain the pressure in the space inside the container, a separate inlet passage for external air flowing into the container is formed, and a dehumidifying means is provided to remove moisture contained in the external air flowing into this inlet passage, and the biggest feature of the present invention is that the humidity inside the container can always be maintained below a certain level without a separate power supply.

[0038] Fig. 1 is an overall view of a container according to the present invention, and Fig. 2 is a longitudinal cross-sectional view of the container of the present invention, showing a structure in which the lower floor is made of a steel base, enabling the interior of the container to be sealed.

[0039] Referring to these drawings, a container (100) according to the present invention is formed with a front surface (120), an upper surface (140), and both side surfaces (160) formed of metal plates, and a rear surface formed to be openable and closable by a door (180). In addition, the bottom surface of the container is formed of a steel material and is formed with a steel base (hereinafter referred to as a 'steel base (200)') having a bending portion to block air from entering through the inner bottom. The container of the present invention has a structure in which the entire body is sealed since there is no passage for air to enter the top surface, bottom surface, side walls, etc. In the drawings, 170 is a frame member located at the rear of the container body, which is a portion of the container body that faces when the door (180) is closed, and is a square-shaped frame, which is referred to as a 'rear frame' for convenience in the following description.

[0040] In addition, the container door structure is improved to ensure internal airtightness so that the interior space of the container is sealed from the outside air when the door (180) is closed (as described below in FIG. 3). In addition, the steel base of the lower floor of the container is structured so that a corrugated steel plate of a certain width is welded on the side, so that the interior space is completely sealed.

[0041] The metal plates forming the front (120), upper surface (140) and both side surfaces (160) of the above-mentioned internal space are each welded to the frame and integrated, and the lower portions (160) of the both side surfaces are mutually connected using the edges and bends of the steel base (200).

[0042] To this end, side beams (162) are positioned at the lower portions of the two side surfaces (160), and the side beams (162) are formed by bending to have a step (163) at the upper portion. In addition, a bendable joint (212) for joining is provided at the side end portions of the steel base (200). The joints (212) of the steel base (200) secured to the lower portions of the two side surfaces (160) and the step (163) are welded together and integrated, so that the inflow of outside air through the edge of the steel base (200) can be prevented. The steel base (200) according to the present invention does not form holes such as nails or rivets that can communicate with outside air, but is formed integrally by welding using the step (163) and the joints (212), thereby completely blocking the inside and the outside, thereby blocking the inflow of outside air.

[0043] The present invention maintains internal humidity below a certain level by blocking external air from entering the container by configuring the container floor with a steel base in a bent shape. That is, since the floor constituting the internal space of a container was previously made of wood, external air could enter through the wood, making it difficult to control the humidity in the internal space of the container. The present invention fundamentally blocks the inflow of external air through the container floor by constructing the floor with a steel base made of a steel material.

[0044] Figures 3 to 5 show the airtight door structure of a container according to the present invention, and the structure is such that the interior space of the container is sealed from the outside air when the door (180) is closed.

[0045] A door (180) is provided on the rear of the container body, and the square frame portion of the container body facing the door when the door is closed is called a rear frame (170). A square mounting groove (175) is formed along the perimeter on the outer surface of the rear frame (170). The mounting groove (175) is a groove formed by recessing inward from the surface of the rear frame (170), and is a portion where a square frame (176), which will be described below, is mounted. The square frame (176) has a square frame shape made of an elastic rubber material. The square frame (176) can be mounted to the mounting groove (175) using screws, adhesive, or various other means, such as a forced fit. The square frame is preferably made of a flexible material so that it is elastic, and for example, it is preferably made of a rubber material.

[0046] In addition, a vinyl cover (177) is provided in front of the square frame (176). The vinyl cover is a very thin vinyl sheet of about 1 mm in thickness and is wide enough to cover the entire open rear surface of the container body. In addition, an airtight frame (178) having a shape corresponding to the square frame shape of the square frame (176) is positioned in front of the vinyl cover (177). The airtight frame is made of a polymer plastic material or a rubber material.

[0047] The above square frame (176) and the above airtight frame (178) are formed with protrusions that protrude in a direction facing each other. The protrusion of the square frame (176) is referred to as a first protrusion (176a), and the protrusion of the airtight frame (178) is referred to as a second protrusion (178a). The first protrusion (176a) and the second protrusion (178a) are formed over the entire square frame of the square frame (176) and the airtight frame (178), and the number of protrusions is formed as an appropriate number between 2 and 4.

[0048] When the airtight frame (178) is pressed while the protrusions of the first protrusion (176a) and the second protrusion (178a) are interlocked with each other and the mountain and valley of the protrusions overlap each other and the airtight frame is fitted into the square frame, the protrusions of the first protrusion (176a) and the second protrusion (178a) interlock with each other and the airtightness is secured between them. At this time, when the vinyl cover (177) is fitted between the first protrusion (176a) and the second protrusion (178a), the entire open rear of the container is blocked, thereby securing the airtightness of the entire interior of the container. That is, when the four edge portions of the vinyl cover in the shape of a square are fitted between the first protrusion (176a) and the second protrusion (178a), and the container door (180) is closed in this state, the interior of the container is completely sealed by being blocked from the outside. Therefore, it is possible to control the internal humidity below a certain level because outside air does not flow in.

[0049] The vinyl cover (177) is installed by unfolding it on the open rear side of the container and then closing the door (180). However, it is not easy to unfold the vinyl cover over the entire rear side of the container. To achieve this, the present invention horizontally arranges magnets on the upper and lower sides of the vinyl cover (177). Circular passages formed transversely in the upper and lower sides of the vinyl cover (177) are formed so that magnets can be inserted. These are referred to as upper inlet tubes (177-1) and lower inlet tubes (177-2). As shown in Fig. 5, magnets (M1, M2) having a transverse length of a predetermined thickness are inserted into the upper inlet tubes (177-1) and lower inlet tubes (177-2). The magnets may be in the shape of circles or square bars. Since the magnets are attached to the container iron plate by magnetic force, the magnets are attached to the upper and lower sides of the container rear side, respectively, so that the vinyl cover can seal the entire open surface of the rear side of the container. And, when the door is closed, the vinyl cover (177) is inserted between the first protrusion (176a) and the second protrusion (178a), thereby sealing the inside of the container.

[0050] The above vinyl cover is cut to a certain size and stored in a cylindrical storage container so that it can be taken out and installed one by one. After taking it out one by one, magnets (M1, M2) are inserted into the upper inlet pipe (177-1) and the lower inlet pipe (177-2) and installed. In addition, the vinyl cover is disposable after use, and the magnets can be continuously reused. The above airtight frame has a square frame structure when in use, but it is recommended to have a foldable structure so that it can be folded and stored after use.

[0051] In the above description, the confidential frame (178) is described as being provided separately as a member positioned between the door and the vinyl cover and placed during use. However, in another embodiment, it may be permanently attached to the inner surface of the container door (180). FIGS. 6 and 7 illustrate such an embodiment.

[0052] FIG. 6 is a view showing a sealed door structure of a container according to another embodiment of the present invention, and FIG. 7 is a view of the container door in the closed state as viewed from inside the container in the embodiment of FIG. 6.

[0053] When an airtight frame (178) is formed on the inner surface of the container door (180), when the door is closed, a vinyl cover is inserted between the protrusions to form an internal seal. In this case, the airtight frame may be a member having a screw-shaped protrusion formed on the inner surface of the door. In addition, since the door is pressed toward the container body when closed, the container interior can be sealed even without the first protrusion, which is the protrusion of the square frame (176).

[0054] The case where the above-mentioned confidential frame (178) is a member that protrudes in a square frame shape from the inner surface of the door (180) is illustrated in FIG. 7, and FIG. 7 is a view of the door when viewed from the inside of the container in a closed state. In FIG. 7, considering that the door (180) opens to both sides, the confidential frames (178-1, 178-2) can be configured in a ㄷ shape on the inner surface of each of the left and right doors (182, 184).

[0055] The present invention utilizes a steel base for the container floor and an airtight structure for the door, thereby completely sealing the interior of the container and preventing moisture from entering due to external airflow, thereby maintaining the humidity inside the container below a required level. In particular, the present invention is a non-powered dehumidifying container capable of dehumidifying without using a power source for dehumidification, such as a dehumidifying device for dehumidifying the interior of the container. A dehumidifying agent may also be appropriately placed in the required locations within the container for dehumidification.

[0056] The present invention prevents outside air from entering the interior of the container through the door by forming a container door with an airtight door structure, thereby controlling the humidity inside the container to a certain level or lower.

Claims

1. Rear frame provided on the rear of the container body; A mounting groove formed by recessing inwardly on the surface of the rear frame; A square frame having a square shape and made of a flexible material with a smooth surface and mounted in the above mounting groove; A door mounted on the rear of the container; A vinyl cover and an airtight frame placed between the above square frame and the door; and Including a first protrusion and a second protrusion formed by protruding in a direction facing each other from each of the above square frame and the confidential frame; A container equipped with a vinyl cover airtight door, characterized in that when the airtight frame is pressed toward the square frame, a vinyl cover is inserted between the first protrusion and the second protrusion and combined, thereby ensuring airtightness of the entire interior of the container.

2. Rear frame provided on the rear of the container body; A mounting groove formed by recessing inwardly on the surface of the rear frame; A square frame having a square shape and made of a flexible material with a smooth surface and mounted in the above mounting groove; A door mounted on the rear of the container; A vinyl cover placed between the above square frame and the door; and It includes a sealing frame provided on the inner side of the door, made of an elastic material having a square frame shape corresponding to the square frame shape, and having a second protrusion that protrudes toward the vinyl cover; A container equipped with a vinyl cover airtight door, characterized in that when the container door is closed, the vinyl cover is pressed between the square frame and the second protrusion, thereby ensuring airtightness throughout the interior of the container.

3. In paragraph 1 or 2, Upper and lower inlet tubes formed transversely on the upper and lower portions of the vinyl cover so that a magnet can be placed inside; and A container equipped with a vinyl-covered airtight door, characterized in that it further includes a magnet that is inserted into the upper and lower inlet pipes and has a constant length in the horizontal direction.

4. In paragraph 1, A container equipped with a vinyl-covered airtight door, characterized in that the airtight frame is configured in a square shape during use and in a foldable shape that can be folded and stored after use.

5. In paragraph 2, Further comprising a first protrusion protruding from the surface of the square frame toward the vinyl cover, A container equipped with a vinyl cover airtight door, characterized in that when the container door is closed, the vinyl cover is pressed between the first protrusion and the second protrusion, thereby ensuring airtightness throughout the interior of the container.

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