Door for a container and container having the same

Abstract

The present invention discloses a container door for a container and a container having the same. The container door includes a first door leaf and a second door leaf which are arranged to open towards each other. The first door leaf is provided with a first inner seal for abutting against the door frame. The second door leaf is provided with a second inner seal for abutting against the door frame and an intermediate seal for abutting against the first door leaf. A corner seal is further provided at the end corner of the second door leaf. The corner seal is detachably connected to both the intermediate seal and the second inner seal. When the container door is in a closed state, the corner seal abuts against the first inner seal. For the container door provided by the present invention, when the seal at the end corner of the door leaf is damaged, only the local seal needs to be replaced, and there is no need to replace the entire intermediate seal and / or inner seal together. This not only simplifies the disassembly and reinstallation process, improves the replacement efficiency, but also can significantly reduce the material cost and labor cost.

Description

Technical Field

[0001] The present invention relates to the technical field of containers, and more particularly to a door for a container and a container having the same. Background Art

[0002] Currently, most containers such as dry bulk containers usually use sealing rubber strips to seal the door leaf to prevent leakage of the goods inside the container and prevent rainwater from entering the container. The existing sealing structure includes a plurality of sealing rubber strips provided on the same door leaf. These sealing rubber strips are arranged substantially along the outer periphery of the door leaf, and adjacent sealing rubber strips are usually integrally formed. Since the sealing rubber strip at the end corner of the door leaf is extremely vulnerable to damage during the use of the container, especially the sealing rubber strip at the lower end corner of the freely openable side of the door leaf, it is extremely vulnerable to the impact of dry bulk goods such as powder when the door is opened for unloading, resulting in damage. This requires replacing the entire integrally formed sealing rubber strip, and the disassembly and reinstallation processes are cumbersome, and the material cost is high.

[0003] Therefore, there is a need for a door for a container and a container having the same to at least partially solve the problems existing in the prior art. Summary of the Invention

[0004] A series of simplified concepts are introduced in the Summary of the Invention section, which will be further detailed in the Detailed Description section. The Summary of the Invention section of the present invention is not intended to attempt to define the key features and essential technical features of the claimed technical solution, nor is it intended to attempt to determine the protection scope of the claimed technical solution.

[0005] To at least partially solve the above problems, according to one aspect of the present invention, there is provided a door for a container, which includes a first door leaf and a second door leaf that are arranged in a pair and are both pivotally connected to the door frame of the container.

[0006] The first door leaf is provided with a first inner seal for abutting against the door frame.

[0007] The second door leaf is provided with a second inner seal for abutting against the door frame and an intermediate seal for abutting against the first door leaf.

[0008] Wherein, a corner seal is further provided at the end corner of the second door leaf. The corner seal is detachably connected to both the intermediate seal and the second inner seal. When the door is in the closed state, the corner seal abuts against the first inner seal.

[0009] Optionally, the corner seal is connected to the intermediate seal and the second inner seal respectively through a plug-in structure, and the plug-in structure includes a plug and a plug hole that mates with the plug.

[0010] Optionally, the corner seal is disposed below the intermediate seal; and / or

[0011] The corner seal is detachably mounted to the second door leaf.

[0012] Optionally, the corner seal includes a first body connected to the intermediate seal and a second body connected to the second inner seal, and the first body and the second body are disposed at an angle and integrally formed.

[0013] Optionally, except for the part connected to the intermediate seal, the structure of the first body is the same as that of the intermediate seal.

[0014] Optionally, the intermediate seal includes an intermediate connecting portion and an intermediate deformation portion connected to each other, the first body is provided with a corner connecting portion and a corner deformation portion connected to each other, both the intermediate connecting portion and the corner connecting portion are used for detachably connecting to the second door leaf, both the intermediate deformation portion and the corner deformation portion are used for abutting against the first door leaf, and the corner deformation portion is detachably connected to the intermediate deformation portion.

[0015] Optionally, a head seal block is provided at the end of the first inner seal, the corner seal is provided with a corner seal block for abutting against the head seal block, and the corner seal block abuts against the door frame when the second door leaf is in the closed position.

[0016] Optionally, the head seal block has a first surface facing inward, the first surface is inclined in the width direction of the first door leaf, the corner seal block has a second surface opposite to the first surface and partially located inside the first surface,

[0017] The box door is configured such that during the closing process of the box door and before the head seal block abuts against the door frame, the first surface does not contact the second surface, or the outer end of the first surface first partially contacts the second surface but at least the inner end of the first surface does not contact the second surface.

[0018] Optionally, the head seal block has a first surface facing inward, the first surface is inclined in the width direction of the first door leaf, the corner seal block has a second surface opposite to the first surface and partially located inside the first surface,

[0019] The door of the container is configured such that when the end sealing block just abuts against the door frame, there is a gap filled by the deformation of the end sealing block between the first surface and the second surface.

[0020] Optionally, the end sealing block protrudes from the first inner sealing member in the thickness direction of the first door leaf.

[0021] Optionally, the end sealing block has an arc-shaped corner portion for abutting against both the corner joint sealing block and the door frame, and the arc-shaped corner portion is formed with an arc-shaped joint surface.

[0022] Optionally, the corner joint sealing block is provided with a convex corner for cooperating with the arc-shaped corner portion, and the convex corner is arranged inside the arc-shaped corner portion.

[0023] Optionally, the corner joint sealing block protrudes from the body of the corner joint sealing member in the width direction of the second door leaf.

[0024] Optionally, the second inner sealing member is provided with an inner plug-in block, the corner joint sealing member is provided with a corner joint plug-in block, one of the plug head and the plug hole is formed in the inner plug-in block, the other of the plug head and the plug hole is formed in the corner joint plug-in block, and the surfaces of the inner plug-in block and the corner joint plug-in block that abut against each other at least partially overlap in the thickness direction of the second door leaf.

[0025] According to another aspect of the present invention, there is provided a container, which includes the door of the container according to any one of the above technical solutions.

[0026] For the door of the container provided by the present invention, by providing a detachable corner joint sealing member at the end corners of the door, when the sealing member at the end corners of the door leaf is damaged, only the local sealing member needs to be replaced, that is, only the corner joint sealing member needs to be replaced, and it is not necessary to replace the entire middle sealing member and / or inner sealing member together. This can not only simplify the disassembly and reinstallation process, improve the replacement efficiency, but also greatly reduce the material cost and labor cost. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] The following drawings of the present invention are used as a part of the present invention to understand the present invention. The embodiments and descriptions of the present invention are shown in the drawings to explain the device and principle of the present invention. In the drawings,

[0028] Figure 1 is a side view schematic diagram of a container according to a preferred embodiment of the present invention, in which the door of the container in the closed state is shown;

[0029] Figure 2 is along Figure 1Cross-sectional schematic diagram of a part of the cabinet door, where the first door leaf is not fully closed and the second door leaf is in the closed position;

[0030] Figure 3 Is similar to Figure 2 Structural schematic diagram of a part of the cabinet door, where both the first door leaf and the second door leaf are in the closed position;

[0031] Figure 4 Is a structural schematic diagram of observing a part of the corner joint seal inward along the width direction of the second door leaf.

[0032] Explanation of reference numerals

[0033] 10: First door leaf 110: First inner seal

[0034] 111: End seal block 112: Hole

[0035] 113: Arc-shaped corner 120: First end face

[0036] 130: First component 20: Second door leaf

[0037] 210: Second inner seal 211: Second insertion hole

[0038] 212: Inner insertion block 213: First abutting surface

[0039] 220: Intermediate seal 221: First insertion hole

[0040] 222: Intermediate connecting part 223: Intermediate deformation part

[0041] 230: Second end face 240: Second component

[0042] 241: Outer wall 242: Inner wall

[0043] 250: Corner joint seal 251: First plug

[0044] 252: Second plug 253: Corner joint insertion block

[0045] 254: Second abutting surface 255: First body

[0046] 256: Second body 257: Corner joint connecting part

[0047] 258: Corner joint deformation part 259: Corner joint seal block

[0048] 260: Convex corner 261: Second surface

[0049] 114: First surface 31: Stripping installation groove

[0050] 32: Lath 33: Through-hole

[0051] 34: Rivet 35: Screw

[0052] 40: Door frame 41: Outer seal Detailed implementation manners

[0053] In the following description, numerous specific details are given to provide a more thorough understanding of the present invention. However, it will be apparent to one skilled in the art that the present invention may be practiced without one or more of these details. In other instances, well-known technical features have not been described in order to avoid obscuring the present invention.

[0054] In order to thoroughly understand the present invention, detailed structures will be presented in the following description to illustrate the present invention. Obviously, the implementation of the present invention is not limited to the specific details familiar to those skilled in the art of this technology. The preferred implementation manners of the present invention are described in detail below. However, in addition to these detailed descriptions, the present invention may have other implementation manners and should not be construed as limited to the implementation manners presented here.

[0055] It should be understood that the purpose of the terms used herein is only to describe specific implementation manners and is not a limitation of the present invention. The singular forms "a", "an" and "the" are also intended to include the plural forms unless the context clearly dictates otherwise. When the terms "comprise" and / or "include" are used in this specification, they specify the presence of the stated features, wholes, steps, operations, elements and / or components, but do not preclude the presence or addition of one or more other features, wholes, steps, operations, elements, components and / or their combinations. The terms "upper", "lower", "front", "rear", "left", "right" and similar expressions used in the present invention are for illustrative purposes only and are not limitations.

[0056] The ordinal numbers such as "first" and "second" cited in the present invention are only identifiers and do not have any other meanings, such as a specific order, etc. Moreover, for example, the term "first component" does not imply the existence of a "second component" by itself, and the term "second component" does not imply the existence of a "first component" by itself.

[0057] Hereinafter, the specific implementation manners of the present invention will be described in more detail with reference to the accompanying drawings, which show representative implementation manners of the present invention and do not limit the present invention.

[0058] Such as Figure 1As shown, the present invention provides a door for a container, which can be used for various containers, such as dry bulk containers, preferably for containers for shipping powdered or granular goods. The top of these containers can be provided with a feed inlet for loading, and unloading can be carried out by opening the door.

[0059] The door includes a first door leaf 10 and a second door leaf 20 arranged in a pair. The first door leaf 10 and the second door leaf 20 have substantially the same structure, that is, they can be configured as hexahedrons. Both the first door leaf 10 and the second door leaf 20 can be pivotally connected to the door frame 40 of the container around their respective pivot axes. For example, they can be pivotally connected to the door frame 40 through a pivot shaft to achieve the opening and closing of these two door leaves.

[0060] As Figure 2 and Figure 3 shown, the first door leaf 10 can be provided with a first inner seal 110 for abutting against the door frame 40 to seal the gap between the first door leaf 10 and the door frame 40 from the inside. The first inner seal 110 includes a vertical part and a horizontal part. Its horizontal part is arranged along the width direction of the first door leaf 10 and can be located inside the lower end of the first door leaf 10. Its vertical part is arranged along the height direction of the first door leaf 10 and is located inside the side of the pivot axis of the first door leaf 10. The vertical part and the horizontal part of the first inner seal 110 can be respectively provided with vertically and horizontally extending bead mounting grooves 31. The bead mounting grooves 31 can receive beads 32 so that the beads 32 can be connected to the first door leaf 10 through fasteners such as rivets 34, thereby mounting the first inner seal 110 to the first door leaf 10.

[0061] Similarly, the second door leaf 20 can be provided with a second inner seal 210 for abutting against the door frame 40 to seal the gap between the second door leaf 20 and the door frame 40 from the inside. The second inner seal 210 includes a vertical part and a horizontal part. Its horizontal part is arranged along the width direction of the second door leaf 20 and can be located inside the lower end of the second door leaf 20. Its vertical part is arranged along the height direction of the second door leaf 20 and is located inside the side of the pivot axis of the second door leaf 20. The vertical part and the horizontal part of the second inner seal 210 can be respectively provided with vertically and horizontally extending bead mounting grooves 31. The bead mounting grooves 31 can receive beads 32 so that the beads 32 can be connected to the second door leaf 20 through fasteners such as rivets 34, thereby mounting the second inner seal 210 to the second door leaf 20.

[0062] Of course, if necessary and / or desired, the first inner seal 110 can also be provided at the upper end of the first door leaf 10, and the second inner seal 210 can also be provided at the upper end of the second door leaf 20.

[0063] In this embodiment, as Figure 1As shown, outer seals 41 for sealing can be provided on the outer sides of the first door leaf 10 and the second door leaf 20, so as to seal the gaps between the door leaf and the door frame 40 and between the two door leaves from the outside. Taking the first door leaf 10 as an example, the outer seal 41 can be arranged along the upper end, the pivot axis side, the opening / closing side and the lower end of the first door leaf 10. Specifically, the outer seal 41 includes a vertical portion and a horizontal portion. The horizontal portion of the outer seal 41 is arranged along the width direction of the first door leaf 10 and can be located outside the upper end and the lower end of the first door leaf 10. Its vertical portion is arranged along the height direction of the first door leaf 10 and is located outside the pivot axis side of the first door leaf 10, so as to abut against the door frame 40 to seal the gap between the first door leaf 10 and the door frame 40; the vertical portion of the outer seal 41 is also located outside the opening / closing side of the first door leaf 10 and can abut against the second door leaf 20 when the box door is closed, so as to seal the gap between the two door leaves. Except that the outer seal 41 is not provided on the opening / closing side of the second door leaf 20, the second door leaf 20 can also be provided with an outer seal 41 similar to that of the first door leaf 10, which will not be elaborated here for the sake of brevity.

[0064] Of course, since there is usually a gap, i.e., the middle seam of the box door, between the first door leaf 10 and the second door leaf 20 when the box door is closed, an intermediate seal 220 can be provided on at least one of the first door leaf 10 and the second door leaf 20. The intermediate seal 220 can extend vertically and be located between the first door leaf 10 and the second door leaf 20. In the illustrated embodiment, the second door leaf 20 can be provided with an intermediate seal 220 for abutting against the first door leaf 10.

[0065] Specifically, the first door leaf 10 has a first end face 120, and a first member 130 arranged vertically is provided on the first end face 120. The above-mentioned outer seal 41 located on the opening / closing side of the first door leaf 10 can be mounted on the first member 130 ( Figure 1 ). The second door leaf 20 has a second end face 230 that can face the first end face 120, and a second member 240 arranged vertically is provided on the second end face 230. It can be understood that the first end face 120 and the second end face 230 face each other with respect to the first door leaf 10 and the second door leaf 20 both in the closed position. The intermediate seal 220 can be mounted on the second member 240, and the intermediate seal 220 can abut against the first member 130 when the box door is closed. The intermediate seal 220 can be located inside the outer seal 41 on the opening / closing side of the first door leaf 10.

[0066] For the illustrated embodiment, the second member 240 can be located inside the first member 130 when the container door is closed or not fully closed. The first member 130 has an inclined surface facing inward and inclined in the width direction of the first door leaf, and the intermediate seal 220 can abut against the inclined surface. It can be understood that the seals mentioned in this article are all elastic members and can generate elastic deformation when the container door is closed, so as to achieve a better sealing effect.

[0067] It should be noted that the directional terms used in this article to describe the various components of the container door, such as "upper", "lower", "above", "below", "upward", "downward", "upward", "downward", etc. are relative to the container door installed horizontally, that is, the vertically placed container door; and, for the sake of easy understanding and simplified description, the directional terms such as "inner", "inside", "outer", "outside", "inward", "outward", etc. are relative to the container door in the closed or not fully closed state, "inner" is closer to the center of the container than "outer", for example, "inside" is the side closer to the center of the container, "outside" is the side away from the center of the container, "inward" is the direction towards the center of the container, and "outward" is the direction away from the center of the container.

[0068] Considering that the seals at the end corners of the door leaf are extremely vulnerable to damage, for example, damaged by the impact of dry bulk cargo such as powder, in this embodiment, a detachable corner seal 250 is provided at the end corners of the door leaf. Specifically, a corner seal 250 can be provided at the end corners of the second door leaf 20. The corner seal 250 can be detachably connected to both the intermediate seal 220 and the second inner seal 210. Further, the corner seal 250 can be detachably connected to the horizontal portions of the intermediate seal 220 and the second inner seal 210. A part of the corner seal 250 is located between the first door leaf 10 and the second door leaf 20 to seal the middle seam of the container door. Another part of the corner seal 250 can abut against the door frame 40 to seal the gap at the door frame 40. The corner seal 250 can abut against the first inner seal 110 so as to form a continuous inner seal when the container door is closed, improving the sealing effect at the door frame 40.

[0069] In this embodiment, by providing the detachable corner seal 250, when the seal at the end corner of the door leaf is damaged, only the local seal needs to be replaced, that is, only the corner seal 250 needs to be replaced, and it is not necessary to replace the entire intermediate seal 220 and / or the inner seal together. This can not only simplify the disassembly and reinstallation process, improve the replacement efficiency, but also greatly reduce the material cost and labor cost.

[0070] The corner joint seal 250 can be detachably mounted to the second door leaf 20 by fasteners such as screws 35 to improve the structural stability. The corner joint seal 250 can be disposed below the intermediate seal 220 because, generally during unloading, the seal at the lower corner of the opening and closing side of the door leaf is usually subjected to the greatest impact. Therefore, it is necessary to preferentially dispose the corner joint seal 250 at the lower corner of the opening and closing side of the door leaf.

[0071] The following will describe the specific structure and installation method of the corner joint seal 250 in conjunction with Figures 2 to 4 ,

[0072] As Figure 4 shown, the corner joint seal 250 can be plugged into the intermediate seal 220 and the second inner seal 210 respectively, that is, connected to the intermediate seal 220 and the second inner seal 210 through a plugging structure. The plugging structure can include a plug and a plugging hole that mates with the plug. The plug and / or the plugging hole can be formed on the plugging block, that is, a plugging block with a plugging structure can be provided on at least one of the corner joint seal 250, the intermediate seal 220, and the second inner seal 210, which can improve the firmness of the connection structure. The shape of the plug is not limited and can be a suitable shape such as a cone, a circle, a square, an angle, etc., preferably a cone for easy insertion. The shape of the plugging hole can correspond to the shape of the plug.

[0073] Specifically, one of the corner joint seal 250 and the intermediate seal 220 can be provided with a first plug 251 extending vertically, and the other of the corner joint seal 250 and the intermediate seal 220 can be provided with a first plugging hole 221. The first plug 251 can be inserted and engaged in the first plugging hole 221. One of the corner joint seal 250 and the second inner seal 210 can be provided with a second plug 252 extending horizontally, and the other of the corner joint seal 250 and the second inner seal 210 can be provided with a second plugging hole 211, and the second plug 252 is inserted and engaged in the second plugging hole 211.

[0074] For the illustrated embodiment, the corner joint seal 250 is provided with a first plug 251, and the intermediate seal 220 is provided with a first plugging hole 221. The first plugging hole 221 can be a part of the through hole 33 provided on the intermediate seal 220 to improve the deformation ability. That is, the first plug 251 can be directly inserted into the through hole 33 of the intermediate seal 220. Of course, in an embodiment not shown, the first plugging hole 221 can be a separately provided mounting hole.

[0075] The second inner seal 210 may be provided with an inner insertion block 212, and one of the insertion head and the insertion hole is formed in the inner insertion block 212; the corner seal 250 may be provided with a corner insertion block 253, and the other of the insertion head and the insertion hole is formed in the corner insertion block 253. For the illustrated embodiment, the second insertion hole 211 is formed in the inner insertion block 212, and the second insertion head 252 is formed in the corner insertion block 253. In this way, an insertion structure can be formed by means of the insertion blocks.

[0076] Optionally, the surfaces of the inner insertion block 212 and the corner insertion block 253 that abut against each other may at least partially overlap in the thickness direction of the second door leaf 20. Specifically, the inner insertion block 212 may be provided with a first abutting surface 213, and the corner insertion block 253 may be provided with a second abutting surface 254 that abuts against the first abutting surface 213. Both the first abutting surface 213 and the second abutting surface 254 are inclined surfaces that are inclined in the thickness direction of the second door leaf 20 and they at least partially overlap in the thickness direction of the second door leaf. Thus, the two abutting surfaces can be further pressed and sealed by the closing of the second door leaf 20, so that the connection structure is stable and reliable. The corner insertion block 253 having the second insertion head 252 may be a hollow member, that is, its interior may be hollow. Thus, the deformation ability can be improved and the force for closing the cabinet door can be reduced.

[0077] The corner seal 250 of the present embodiment may include a first body 255 connected to the intermediate seal 220 and a second body 256 connected to the second inner seal 210. The first body 255 and the second body 256 are arranged at an angle and integrally formed. Specifically, the first body 255 may be substantially the same as the extending direction of the intermediate seal 220, that is, it also extends vertically. The second body 256 may be substantially the same as the extending direction of the second inner seal 210, that is, it also extends horizontally. The first body 255 may be provided with a first insertion head 251, and the second body 256 may be provided with a second insertion head 252. The first body 255 may be connected to the second member 240 through a clamping structure and / or fasteners such as screws 35. The second body 256 may further be provided with a horizontally extending bead mounting groove 31 so as to fix the corner seal 250 to the second door leaf 20 through a bead 32 and fasteners such as rivets 34.

[0078] The corner seal 250 may be configured such that except for the part connected to the intermediate seal 220, that is, except for the insertion structure, the structure of the first body 255 is substantially the same as the structure of the intermediate seal 220. In other words, the structure of the first body 255 corresponds to the structure of the intermediate seal 220 to maintain a consistent assembly manner and external shape. Specifically, referring back to Figure 2 and Figure 3, the illustrated embodiment exemplarily shows a structure of the intermediate seal 220. Among them, the intermediate seal 220 may include an intermediate connecting portion 222 and an intermediate deformable portion 223 that both extend vertically and are connected to each other. The first body 255 is provided with a corner connecting portion 257 and a corner deformable portion 258 that both extend vertically and are connected to each other. The intermediate connecting portion 222 and the corner connecting portion 257 may both be used to detachably connect to the second door leaf 20, specifically to the second member 240.

[0079] The intermediate deformable portion 223 and the corner deformable portion 258 may both be used to abut against the first door leaf 10, specifically against the inclined surface of the first member 130. Further, the intermediate deformable portion 223 and the corner deformable portion 258 may be pressed between the inclined surface of the first member 130 and the second member 240 ( Figure 3 ).

[0080] The corner deformable portion 258 can be detachably connected to the intermediate deformable portion 223. The first plug joint 251 of the corner deformable portion 258 can be inserted into the first socket hole 221 of the intermediate deformable portion 223. The surfaces of the corner deformable portion 258 and the intermediate deformable portion 223 facing each other abut. Specifically, the corner deformable portion 258 has a stepped surface forming the first plug joint 251, and the stepped surface facing the intermediate deformable portion 223 can abut against the end surface of the intermediate deformable portion 223. The corner connecting portion 257 can be spaced apart from the intermediate connecting portion 222, and there is a gap between them to reserve space for compressive deformation, so that the surfaces of the corner deformable portion 258 and the intermediate deformable portion 223 abutting against each other still remain in close contact when the door leaf is closed.

[0081] Optionally, the structure of the intermediate deformable portion 223 is not limited. It can be a solid member, a hollow member with a through hole 33, or a member in which the through hole 33 of the hollow member is filled with a foaming material such as rubber foaming material. Correspondingly, the structure of the corner deformable portion 258 can be substantially the same as the structure of the intermediate deformable portion 223. Optionally, the corner deformable portion 258 can be provided with a vertically extending through hole 33, that is, the corner deformable portion 258 is a hollow member. The first plug joint 251 can also be provided with a vertically extending through hole 33. The through hole 33 of the first plug joint 251 and the through hole 33 of the corner deformable portion 258 can form a stepped hole. Thus, the force for closing the cabinet door can be reduced, making the door closing process easier.

[0082] The second member 240 may be a U-shaped member. The corner connection portion 257 can be connected to the outer sidewall 241 of the U-shaped member. For example, the shape of the corner connection portion 257 may also be U-shaped, and the outer sidewall 241 of the second member 240 can be inserted into the corner connection portion 257. For further fixation, the corner connection portion 257 can then be fixedly reinforced to the second member 240 by fasteners such as screws 35. The corner deformation portion 258 and the intermediate deformation portion 223 can cover the opening of the U-shaped member to prevent powdery or granular goods from entering the second member 240, affecting the sealing effect and causing waste. When the box door is in the closed state, both the corner deformation portion 258 and the intermediate deformation portion 223 can be deformed due to extrusion, and a part of them is pressed between the outer sidewall 241 and the inclined surface of the first member 130, and another part is pressed between the inner sidewall 242 and the inclined surface of the first member 130, so that a double seal can be formed at the middle seam of the box door.

[0083] The outer sidewall 241 of the U-shaped member is shorter than its inner sidewall 242. The inner sidewall 242 of the U-shaped member and the corner deformation portion 258 at least partially overlap in the thickness direction of the second door leaf 20. It can be understood that the setting manner of the intermediate seal 220 is the same as that of the first body 255, and for the sake of simplicity, it will not be described in detail. In this embodiment, the second member 240 can not only be used to fix the intermediate seal 220 and the first body 255, but also be sealed with the corner deformation portion 258 and the intermediate deformation portion 223 to achieve the sealing of the middle seam of the box door. The inner sidewall 242 of the U-shaped member can also protect at least a part of the intermediate seal 220 and at least a part of the first body 255 from contacting the dry bulk goods and avoid damage to this part caused by the impact of the dry bulk goods.

[0084] The corner seal 250 is provided with a corner seal block 259 for abutting against the first inner seal 110. The corner seal block 259 abuts against the door frame 40 when the second door leaf 20 is in the closed position. The corner seal block 259 can protrude in the width direction of the second door leaf 20 from the body of the corner seal 250, that is, from the first body 255.

[0085] The end of the first inner seal 110 can be provided with an end seal block 111, and the end seal block 111 is partially located outside the corner seal block 259. The shape of the corner seal block 259 can be matched with the shape of the end seal block 111. The bead mounting groove 31 of the first inner seal 110 can extend into the end seal block 111 to fix the end seal block 111 to the first door leaf 10 through the bead 32. The end seal block 111 can be provided with holes 112 to improve the deformation ability of the end seal block 111.

[0086] The end sealing block 111 has a first surface 114 facing inward, and the first surface 114 is inclined in the width direction of the first door leaf 10. The corner joint sealing block 259 has a second surface 261 opposite to the first surface 114 and partially located inside the first surface 114. The second surface 261 may be inclined in the width direction of the second door leaf 20. The box door can be configured such that during the closing process of the box door and before the end sealing block 111 abuts against the door frame 40, the first surface 114 can be prevented from contacting the second surface 261. When the end sealing block 111 abuts against the door frame 40 or during the process of being compressed after abutting against the door frame 40, the outer end of the first surface 114 can first partially contact the second surface 261; then the first surface 114 and the second surface 261 start to be squeezed and deformed. Further, in this embodiment, the box door can be configured such that during the closing process of the box door, the end sealing block 111 can first abut against the door frame 40 and then against the corner joint sealing block 259.

[0087] Alternatively, the box door can be configured such that during the closing process of the box door and before the end sealing block 111 abuts against the door frame 40, the outer end of the first surface 114 can first partially contact the second surface 261, and at least the inner end of the first surface 114 does not contact the second surface 261, so as to reduce the friction area between the end sealing block 111 and the corner joint sealing block 259, thereby reducing the frictional force generated by the relative movement between the two. At least the inner end of the first surface 114 refers to the part except its outer end, including the inner end and the intermediate part between the inner end and the outer end. When the end sealing block 111 abuts against the door frame 40 or during the process of being compressed after abutting against the door frame 40, the inner end of the first surface 114 will contact the second surface 261. In this embodiment, the end sealing block 111 can first partially abut against the corner joint sealing block 259, the overlapping amount (overlapping part) between the two is not too large, and it can slide along the second surface 261 of the corner joint sealing block 259 towards the door frame 40, and then abut against the door frame 40.

[0088] With this embodiment, during the closing process of the box door, the first inner seal 110 can smoothly abut against the door frame 40, without being hindered from closing the first door leaf 10 due to a large frictional force with the corner joint seal 250, and the phenomenon of being stuck by the corner joint seal 250 is avoided, so that the closing process of the box door is easier.

[0089] The box door can be further configured such that when the end sealing block 111 just abuts against the door frame 40, there is a gap between the first surface 114 of the end sealing block 111 and the second surface 261 of the corner joint sealing block 259, and this gap can be filled by the deformation of the end sealing block 111. The existence of the gap can avoid the generation of frictional force, and it is easier for the end sealing block 111 to abut against the door frame 40 first. Relying on at least the elastic deformation of the end sealing block 111 to fill this gap, it completely fits with the corner joint sealing block 259 to achieve sealing.

[0090] The end sealing block 111 protrudes from the first inner seal 110 in the thickness direction of the first door leaf 10, so that the deformation amount of the end sealing block 111 increases to better press and seal with the corner joint sealing block 259, and the end sealing block 111 can generate enough deformation volume to fill the gap existing between the end sealing block 111 and the corner joint sealing block 259.

[0091] The end sealing block 111 can have an arc-shaped corner 113 for abutting against both the corner joint sealing block 259 and the door frame 40, and the arc-shaped corner 113 is formed with an arc-shaped joint surface. The corner joint sealing block 259 can abut against the part of the joint surface facing the corner joint sealing block 259, and the door frame 40 can abut against the part of the joint surface facing the door frame 40. The corner joint sealing block 259 can be provided with a convex corner 260 for cooperating with the arc-shaped corner 113, and the convex corner 260 is arranged inside the arc-shaped corner 113. By setting the convex corner 260, the fitting can be made closer, further avoiding the existence of gaps.

[0092] Specifically, as an example, during the closing process of the box door, first close the second door leaf 20 to its closed position ( Figure 2 ), and then close the first door leaf 10 to its closed position ( Figure 3 ); during the closing process of the first door leaf 10, the arc-shaped corner 113 of the end sealing block 111 first abuts against the door frame 40 ( Figure 2 ), at this time there is a gap between the corner joint seal 250 and the end sealing block 111, and there is also a gap between the convex corner 260 and the arc-shaped corner 113. Then, continue to close the first door leaf 10, the end sealing block 111 gradually deforms, and the gap between the corner joint seal 250 and the end sealing block 111 is completely filled.

[0093] The side surface of the end sealing block 111 facing the corner joint sealing block 259 is an inclined surface facing the inside; the dimension of the arc-shaped corner 113 in the width direction is smaller than the dimension of the rest of the end sealing block 111 in the width direction. The inner surface of the end sealing block 111 facing the door frame 40 is an inclined surface, and the dimension of the arc-shaped corner 113 in the thickness direction is larger than the dimension of the rest of the end sealing block 111 in the thickness direction.

[0094] An exemplary installation process of the seal on the second door leaf 20 is as follows:

[0095] Insert the first plug connector 251 into the first plug hole 221, and insert the second plug connector 252 into the second plug hole 211. Then snap the corner connection portion 257 onto the outer side wall 241 of the second member 240 and fix the corner connection portion 257 to the second member 240 with screws 35. Insert the first plug connector 251 tightly into the first plug hole 221 and compress the step surface of the corner deformation portion 258. At the same time, snap the lower end of the intermediate connection portion 222 onto the outer side wall 241 of the second member 240 and fix the lower end of the intermediate connection portion 222 to the second member 240 with screws 35. Continue to snap the remaining part of the intermediate connection portion 222 onto the outer side wall 241 of the second member 240.

[0096] Fix the second body 256 of the corner seal 250 to the second door leaf 20 with a bead 32 and rivets 34. Insert the second plug connector 252 tightly into the second plug hole 211. At the same time, fix one end of the second inner seal 210 close to the second plug hole 211 to the second door leaf 20 with a bead 32 and rivets 34. Continue to fix the remaining part of the second inner seal 210 to the second door leaf 20 with a bead 32 and rivets 34.

[0097] Replacement process of the corner seal 250:

[0098] Remove the rivets 34, screws 35 and beads 32 that fix the corner seal 250, pull out the first plug connector 251 and the second plug connector 252, remove the damaged corner seal 250, and install a new corner seal 250.

[0099] According to another aspect of the present invention, there is provided a container including the above-mentioned door.

[0100] Unless otherwise defined, the technical and scientific terms used herein have the same meanings as commonly understood by those skilled in the technical field of the present invention. The terms used herein are only for the purpose of describing specific embodiments and are not intended to limit the present invention. Terms such as "portion" and "part" as used herein can represent either a single part or a combination of multiple parts. Terms such as "install" and "set" as used herein can represent either a component directly attached to another component or a component attached to another component through an intermediate member. Features described in one embodiment herein can be applied to another embodiment alone or in combination with other features, unless the feature is not applicable or otherwise stated in that other embodiment.

[0101] The present invention has been described by the above embodiments. However, it should be understood that the above embodiments are only for illustrative and explanatory purposes, and are not intended to limit the present invention to the scope of the described embodiments. In addition, those skilled in the art can understand that the present invention is not limited to the above embodiments, and more variations and modifications can be made according to the teachings of the present invention, and these variations and modifications all fall within the scope of protection required by the present invention. The scope of protection of the present invention is defined by the appended claims and their equivalent scope.

Claims

1. A container door, characterized in that, including a first door leaf and a second door leaf which are arranged in a pair and are pivotally connected to the door frame of the container respectively, wherein the first door leaf is provided with a first inner seal for abutting against the door frame; the second door leaf is provided with a second inner seal for abutting against the door frame and an intermediate seal for abutting against the first door leaf; wherein a corner seal is further provided at the end corner of the second door leaf, and the corner seal is detachably connected to both the intermediate seal and the second inner seal. When the door of the container is in the closed state, the corner seal abuts against the first inner seal; wherein the intermediate seal includes an intermediate connecting portion and an intermediate deforming portion which are connected to each other, the corner seal includes a first body connected to the intermediate seal, the first body is provided with a corner connecting portion and a corner deforming portion which are connected to each other, the intermediate connecting portion and the corner connecting portion are detachably connected to the second door leaf, both the intermediate deforming portion and the corner deforming portion are used for abutting against the first door leaf, and the corner deforming portion is detachably connected to the intermediate deforming portion.

2. The door of the box according to claim 1, characterized in that, The corner seal is connected to the intermediate seal and the second inner seal respectively through a plugging structure, and the plugging structure includes a plug head and a plugging hole matched with the plug head.

3. The door of the container according to claim 1, wherein the corner seal is arranged below the intermediate seal; and / or the corner seal is detachably mounted on the second door leaf.

4. The cabinet door according to claim 1, wherein, The corner seal further includes a second body connected to the second inner seal, and the first body and the second body are arranged at an angle and integrally formed.

5. The cabinet door according to claim 1, characterized in that, The corner seal is configured such that except for the part connected to the intermediate seal, the structure of the first body is the same as that of the intermediate seal.

6. The door of the box according to claim 1, characterized in that, A head seal block is provided at the end of the first inner seal, and the corner seal is provided with a corner seal block for abutting against the head seal block. The corner seal block abuts against the door frame when the second door leaf is in the closed position.

7. The door of the container according to claim 6, wherein the head seal block has a first surface facing inward, and the first surface is inclined in the width direction of the first door leaf. The corner seal block has a second surface opposite to the first surface and partially located inside the first surface; the door of the container is configured such that during the closing process of the door of the container and before the head seal block abuts against the door frame, the first surface does not contact the second surface, or the outer end of the first surface first partially contacts the second surface but at least the inner end of the first surface does not contact the second surface.

8. The door of the container according to claim 6, wherein the head seal block has a first surface facing inward, and the first surface is inclined in the width direction of the first door leaf. The corner seal block has a second surface opposite to the first surface and partially located inside the first surface; The box door is configured such that when the end seal block just abuts against the door frame, there is a gap filled by the deformation of the end seal block between the first surface and the second surface.

9. The door of the box according to claim 6, characterized in that, The end seal block protrudes from the first inner seal member in the thickness direction of the first door leaf.

10. The door of the box according to claim 6, characterized in that, The end seal block has an arcuate corner portion for abutting against both the corner seal block and the door frame, and the arcuate corner portion is formed with an arcuate joint surface.

11. The cabinet door according to claim 10, characterized in that, The corner seal block is provided with a convex corner for cooperating with the arcuate corner portion, and the convex corner is arranged inside the arcuate corner portion.

12. The door of the box according to claim 6, characterized in that, The corner seal block protrudes from the body of the corner seal member in the width direction of the second door leaf.

13. The door of the box according to claim 2, characterized in that, The second inner seal member is provided with an inner plug block, the corner seal member is provided with a corner plug block, one of the plug head and the plug hole is formed in the inner plug block, the other of the plug head and the plug hole is formed in the corner plug block, and the surfaces of the inner plug block and the corner plug block that abut against each other at least partially overlap in the thickness direction of the second door leaf.

14. A container, characterized in that, Comprising the box door according to any one of claims 1-13.

Images