Threshold structure for container and container having the same

Abstract

The present invention discloses a threshold structure for a container and a container having the threshold structure. The threshold structure includes an outer threshold, an inner threshold and a threshold reinforcement. The outer threshold is arranged in a vertical direction and extends in a horizontal length direction. The inner threshold is arranged in a horizontal direction and extends in the length direction. One side of the inner threshold is connected to the outer threshold, and the other side of the inner threshold is used to be connected to the container. The threshold reinforcement is arranged at the bottom of the inner threshold and connected to the inner threshold and the outer threshold. When the threshold structure is installed to the container, the threshold reinforcement is connected to the container. The threshold structure according to the present invention greatly improves the overall strength and durability.

Description

Technical Field

[0001] The present invention relates to the technical field of containers, and in particular to a threshold structure for a container and a container having the threshold structure. Background Art

[0002] The threshold structure of the door of an existing container (such as a refrigerated container) is usually composed of an outer threshold, an inner threshold, a floor support, a PE block, a PVC insulation member, etc. Since forklifts are often used to transport goods in and out of containers, the force on the threshold of the container is very large. The strength of the threshold of the ordinary structure can no longer meet the demand. After a long period of use, the threshold will be severely deformed, and even make the door unable to close.

[0003] Therefore, it is necessary to provide a threshold structure for a container and a container having the threshold structure to at least partially solve the above problems. Summary of the invention

[0004] A series of simplified concepts are introduced in the Summary of the Invention, which will be further described in detail in the Detailed Description of the Invention. The Summary of the Invention does not mean to attempt to define the key features and essential technical features of the claimed technical solution, nor does it mean to attempt to determine the scope of protection of the claimed technical solution.

[0005] In order to at least partially solve the above-mentioned problems, the present invention discloses a threshold structure for a container. The threshold structure includes an outer threshold, an inner threshold and a threshold reinforcement structure. The outer threshold is arranged in a vertical direction and extends in a horizontal length direction. The inner threshold is arranged in a horizontal direction and extends in the length direction. One side of the inner threshold is connected to the outer threshold, and the other side of the inner threshold is used to connect to the container. The threshold reinforcement is arranged at the bottom of the inner threshold and connected to the inner threshold and the outer threshold, and when the threshold structure is installed to the container, the threshold reinforcement is connected to the container. The threshold structure according to the present invention effectively improves its overall strength and durability.

[0006] Optionally, the rocker structure includes a plurality of rocker reinforcements, and the plurality of rocker reinforcements are arranged at intervals along the length direction.

[0007] Optionally, the cross-section of the rocker reinforcement is one or more of square, “C”-shaped, “L”-shaped and “U”-shaped.

[0008] Optionally, the outer door sill includes a first vertical portion, a first upper horizontal portion connected to the upper end of the first vertical portion, and a first lower horizontal portion connected to the lower end of the first vertical portion, the inner door sill is connected to the first vertical portion, and the first upper horizontal portion, the first lower horizontal portion, and the inner door sill are oriented in the same direction relative to the first vertical portion, and the door sill reinforcement is arranged between the inner door sill and the first lower horizontal portion.

[0009] Optionally, the threshold structure also includes a box connector, which is connected to the other side of the inner threshold to connect the other side of the inner threshold to the container, the box connector includes a second vertical portion, a second upper horizontal portion connected to the upper end of the second vertical portion, and a second lower horizontal portion connected to the lower end of the second vertical portion, the second upper horizontal portion is connected to the other side of the inner threshold and is used to be connected to the container, the second upper horizontal portion, the second lower horizontal portion and the inner threshold are oriented in the same direction relative to the second vertical portion, and the threshold reinforcement is arranged between the inner threshold and the second lower horizontal portion.

[0010] Optionally, the inner threshold includes a floor connector, a heat insulating member, a support member, and a base plate. The floor connector is spaced apart from the outer threshold to form a gap. When the threshold structure is mounted to the container, the floor connector is used to connect to the floor of the container. The heat insulating member is arranged below the floor connector and a portion of the heat insulating member is located at the gap. The support member is connected to the outer threshold below the heat insulating member to support the heat insulating member. The base plate is arranged below the support member, one side of the base plate is connected to the outer threshold, and the other side of the base plate is used to connect to the bottom of the box.

[0011] Optionally, the support member includes a first support member and a second support member. The second support member is arranged below the first support member, and the strength of the second support member is higher than that of the first support member.

[0012] Optionally, there are multiple second support members, and the multiple second support members are arranged at intervals.

[0013] Optionally, the threshold structure further includes a drainage pipe, the floor connector includes a first through hole, and the drainage pipe extends from the first through hole in a vertical direction through the inner threshold. When water accumulates inside the container, the accumulated water can be drained through the drainage channel formed by the drainage pipe.

[0014] Optionally, the threshold structure includes a plurality of drain pipes, and the plurality of drain pipes are arranged at intervals along the length direction.

[0015] Optionally, the threshold structure includes a backing plate and a fastener. The backing plate is arranged below the inner threshold and is spaced apart from the inner threshold. A second through hole is arranged on the backing plate. The fastener extends through the first through hole, the drain pipe and the second through hole.

[0016] According to another aspect of the present invention, a container is provided, comprising a container body and any one of the above-mentioned threshold structures. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The following drawings of the embodiments of the present invention are used as part of the present invention for understanding the present invention. The embodiments of the present invention and their description are shown in the drawings to explain the principles of the present invention. In the drawings,

[0018] Figure 1 A front view of the rear end door sill of the present invention; and

[0019] Figure 2 for Figure 1 AA section view. DETAILED DESCRIPTION

[0020] In the following description, a large number of specific details are provided to provide a more thorough understanding of the present invention. However, it is obvious to those skilled in the art that the embodiments of the present invention can be implemented without one or more of these details. In other examples, in order to avoid confusion with the embodiments of the present invention, some technical features well known in the art are not described.

[0021] In order to fully understand the embodiments of the present invention, detailed structures will be presented in the following description. Obviously, the implementation of the embodiments of the present invention is not limited to the specific details familiar to those skilled in the art. The preferred embodiments of the present invention are described in detail below, but in addition to these detailed descriptions, the present invention may also have other embodiments.

[0022] It should be noted that the “connection” mentioned herein can be a direct connection, that is, the two components connected to each other are directly connected to each other; or it can be an indirect connection, that is, the two components connected to each other can be connected to each other through an intermediate component.

[0023] According to a first aspect of the present invention, a threshold structure 100 is provided. The threshold structure 100 can be used in a container, such as a refrigerated container, a non-refrigerated container, etc. When used in a container, the threshold structure 100 can be arranged at any suitable position of the container, such as the front end, the rear end or the side. Figure 1-Figure 2 The threshold structure 100 of the present invention is described in detail by taking the threshold structure 100 arranged at the rear end of a container as an example. For the sake of simplicity, only the rear end of the container is shown in the drawings.

[0024] like Figure 1 and Figure 2 As shown, the rocker structure 100 may mainly include an outer rocker 110, an inner rocker 120, and a rocker reinforcement 140. The various components of the rocker structure 100 will be described in detail below.

[0025] The outer threshold 110 is arranged in the vertical direction and extends in the horizontal length direction D1. In this embodiment, since the threshold structure 100 is arranged at the rear end of the container, the outer threshold 110 can extend in the transverse direction of the container, that is, when the threshold structure 100 is installed at the rear end of the container, the horizontal length direction D1 can be the transverse direction of the container. In other embodiments of the present invention, the threshold structure 100 can also be arranged on the side of the container. In this case, the outer threshold 110 can extend in the longitudinal direction of the container, that is, when the threshold structure 100 is installed on the side of the container, the horizontal length direction D1 can be the longitudinal direction of the container.

[0026] In this embodiment, the cross section of the outer door sill 110 may be substantially C-shaped. Figure 2 As shown, the outer door sill 110 may include a first vertical portion 111, a first upper horizontal portion 112 connected to the upper end of the first vertical portion 111, and a first lower horizontal portion 113 connected to the lower end of the first vertical portion 111. The first upper horizontal portion 112 and the first lower horizontal portion 113 extend toward the same direction at the upper end and the lower end of the first vertical portion 111, respectively. Specifically, in this embodiment, when the door sill structure 100 is installed to the container, the first upper horizontal portion 112 and the first lower horizontal portion 113 extend toward the container body at the upper end and the lower end of the first vertical portion 111, respectively.

[0027] The inner threshold 120 is arranged in the horizontal direction and extends in the length direction D1. One side of the inner threshold 120 (the side away from the container body when the threshold structure 100 is installed in the container) is connected to the outer threshold 110. Specifically, in this embodiment, Figure 2 As shown, one side of the inner threshold 120 can be connected to the first vertical portion 111 of the outer threshold 110, and the inner threshold 120 is located on the same side as the first upper horizontal portion 112 and the first lower horizontal portion 113 relative to the first vertical portion 111. That is, the first upper horizontal portion 112 and the first lower horizontal portion 113 of the outer threshold 110 and the inner threshold 120 extend in the same direction relative to the first vertical portion 111 of the outer threshold 110. When the threshold structure 100 is installed in a container, the other side of the inner threshold 120 can be connected to the container, such as the bottom of the container body, by any suitable means such as welding or using fasteners.

[0028] Preferably, in this embodiment, the threshold structure may further include a box body connector 130. On one hand, the box body connector 130 is connected (e.g., welded, using fasteners, etc.) to the other side of the inner threshold 120. On the other hand, when the threshold structure 100 is installed on the container, the box body connector 130 is used to connect (e.g., welded, using fasteners, etc.) to the box body of the container, such as the bottom of the box body of the container. Therefore, when the threshold structure 100 is installed on the container, the inner threshold 120 can be indirectly connected to the container through the box body connector 130.

[0029] Specifically, Figure 2 As shown, in this embodiment, the cross-section of the box connector 130 can be generally "C"-shaped. Of course, in other embodiments of the present invention, the box connector 130 can also have other suitable shapes, such as "L"-shaped, "U"-shaped, etc. The box connector 130 can be arranged in the vertical direction and extend along the length direction D1. Specifically, the box connector 130 includes a second vertical portion 131, a second upper horizontal portion 132 connected to the upper end of the second vertical portion 131, and a second lower horizontal portion 133 connected to the lower end of the second vertical portion 131. The second upper horizontal portion 132 and the second lower horizontal portion 133 extend in the same direction at the upper end and the lower end of the second vertical portion 131, respectively. Specifically, in this embodiment, when the threshold structure 100 is installed to the container, the second upper horizontal portion 132 and the second lower horizontal portion 133 extend in the direction away from the box of the container at the upper end and the lower end of the second vertical portion 131, respectively. It should be noted that when the threshold structure 100 is installed at the front end or rear end of the container body, the container body connector 130 may be a bottom cross beam of the container to save costs.

[0030] Optionally, in this embodiment, the inner threshold 120 may be provided with a floor connector 121, a heat insulator 122, a support and a base plate 124 in sequence from top to bottom along the vertical direction. Specifically, the floor connector 121 is spaced apart from the outer threshold 110 to form a gap. When the threshold structure 100 is installed to the container, the floor connector 121 is used to connect to the floor 150 of the container. In order to facilitate the connection, the floor connector 121 may be made of a metal material. The heat insulator 122 is provided below the floor connector 121 and a portion of the heat insulator 122 is located at the gap between the floor connector 121 and the first upper horizontal portion 112 of the outer threshold 110 to thermally isolate the floor connector 121 from the outer threshold 110, and prevent the heat of the floor 150 of the container from being transferred to the outside of the container through the floor connector 121 and the outer threshold 110. The heat insulator 122 may be made of any suitable material with low thermal conductivity (e.g., polyvinyl chloride, PVC). The support member is disposed below the heat insulating member 122 and connected to the outer door sill 110, and is used to support the heat insulating member 122. Specifically, in the present embodiment, the support member may be connected to the first vertical portion 111 of the outer door sill 110. Further optionally, in the present embodiment, the support member may include a first support member 123' and a second support member 123". Among them, the first support member 123' may be made of a non-metallic material, which has the function of isolating heat transfer and providing strength support. For example, the first support member 123' may be made of polyethylene (PE). The second support member 123" is disposed below the first support member 123'. The second support member 123" may be made of a material having a higher strength than the first support member 123", so as to further provide strength support. Optionally, in the present embodiment, there may be a plurality of second support members 123". The plurality of second support members 123" may be spaced apart along the length direction D1, so as to save materials and reduce costs as much as possible while satisfying strength support. In other embodiments of the present invention, the second support member 123" may also be an integral component along the length direction D1. The base plate 124 is disposed below the support member. Specifically, in the present embodiment, the base plate 124 is disposed below the second support member 123". One side of the base plate 124 is connected to the outer threshold 110. Specifically, in the present embodiment, one side of the base plate 124 is connected to the first vertical portion 111 of the outer threshold 110. When the threshold structure 100 is installed to a container, the other side of the base plate 124 is used to connect to the container, such as the body of the container.

[0031] The threshold reinforcement 140 is disposed at the bottom of the inner threshold 120 and connected to the inner threshold 120 and the outer threshold 110, and when the threshold structure 100 is installed to the container, the threshold reinforcement is connected to the container, for example, the bottom of the container body. When the threshold structure 100 is installed to the container, the inner threshold 120, the outer threshold 110 and the threshold reinforcement 140 are connected as a whole and connected to the container by providing the threshold reinforcement 140, which effectively improves the overall strength and durability of the threshold structure 100.

[0032] Specifically, in this embodiment, the rocker reinforcement 140 is disposed between the first lower horizontal portion 113, the second lower horizontal portion 133 and the inner rocker 120. Figure 2 As shown, the threshold reinforcement 140 is disposed at the lower portion of the inner threshold 120, and one side of the threshold reinforcement 140 may be connected to the first vertical portion 111, and the other side may be connected to the second vertical portion 131. The lower surface of the threshold reinforcement 140 may be connected to the first lower horizontal portion 113 and the second lower horizontal portion 133. That is, the threshold reinforcement 140 is integrally disposed with the inner threshold 120, the outer threshold 110, and the box connector 130 and connected to the container, for example, the bottom of the box of the container.

[0033] like Figure 1 As shown, in this embodiment, the threshold structure 100 may be provided with a plurality of (for example, 4) threshold reinforcements 140, and the plurality of threshold reinforcements 140 are arranged at intervals along the length direction D1, so as to save materials and reduce costs while satisfying strength support. Furthermore, the plurality of threshold reinforcements 140 may be arranged at equal intervals along the length direction D1, so as to provide uniform support along the length direction D1. In other embodiments of the present invention, the plurality of threshold reinforcements 140 may also be arranged at unequal intervals along the length direction. The cross-section of the threshold reinforcement 140 may be one or more of any suitable shapes such as square, "C"-shaped, "L"-shaped, and "U"-shaped.

[0034] like Figure 2As shown, optionally, the threshold structure 100 may also include one or more drain pipes 160. The floor connector 121 is correspondingly provided with one or more first through holes along the length direction D1 of the threshold structure 100. Wherein, when there are multiple first through holes, the multiple first through holes are arranged at equal or unequal intervals along the length direction D1. The drain pipe 160 extends from the corresponding first through hole through the inner threshold 120 along the vertical direction. Specifically, in the embodiment, the drain pipe 160 extends from the first through hole along the vertical direction through the heat insulating member 122, the first support member 123', the second support member 123" and the base plate 124. It should be noted that in this embodiment, since the second support member 123" is arranged at intervals along the length direction D1, when the drain pipe 160 is arranged, the second support member 123" can be staggered as much as possible along the length direction. In this way, it is not necessary to process through holes in the second support member 123", which simplifies the process and reduces the cost on the one hand, and does not affect the supporting strength of the second support member 123" on the other hand.

[0035] Optionally, the threshold structure 100 may further include a plurality of pads 170 and fasteners 180. The plurality of pads 170 are arranged below the inner threshold 120 in one-to-one correspondence with the drain pipe 160 and are spaced apart from the inner threshold 120. Specifically, in the present embodiment, the plurality of pads 170 are arranged below the substrate 124 of the inner threshold 120 in one-to-one correspondence with the drain pipe 160 and are spaced apart from the substrate 124. The pad 170 is provided with a second through hole corresponding to the first through hole, and the fastener 180 (such as a bolt, etc.) extends through the first through hole, the drain pipe 160 and the second through hole in sequence. In other words, the fastener 180 passes through the floor connector 121, the inner threshold 120 and the pad 170 in sequence and fastens the floor connector 121, the inner threshold 120 and the pad 170. It should be noted that when the fastener 180 passes through the first through hole and the second through hole, there will inevitably be a gap between the inner sidewalls of the first through hole and the second through hole. When the threshold structure 100 is installed on the container, the accumulated water inside the container flows into the drain pipe 160 through the gap between the first through hole of the floor connector 121 and the fastener 180, and then flows onto the pad 170 through the gap between the second through hole and the fastener 180 and the gap between the pad 170 and the base plate 124, and is discharged from both ends of the pad 170, eliminating the hidden danger of water accumulation.

[0036] According to another aspect of the present invention, a container is provided. The container may include the above-mentioned threshold structure. The detailed structure of the threshold structure can refer to the above description, and will not be repeated here for the sake of brevity.

[0037] Unless otherwise defined, the technical and scientific terms used herein have the same meaning as those generally understood by those skilled in the art in the technical field of the present invention. The terms used herein are only for describing specific implementation purposes and are not intended to limit the present invention. Terms such as "setting" and the like appearing in this article can mean that one component is directly attached to another component, or that one component is attached to another component through an intermediate. Features described in this article in one embodiment may be applied to another embodiment alone or in combination with other features, unless the feature is not applicable in the other embodiment or otherwise specified.

[0038] The present invention has been described through the above-mentioned embodiments, but it should be understood that the above-mentioned embodiments are only for the purpose of example and illustration, and are not intended to limit the present invention to the described embodiments. It can be understood by those skilled in the art that 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 the protection claimed by the present invention.

Claims

1. A threshold structure for a container, characterized in that: The threshold structure comprises: an outer door sill, the outer door sill being arranged in a vertical direction and extending in a horizontal length direction, the outer door sill comprising a first vertical portion, a first upper horizontal portion connected to an upper end of the first vertical portion, and a first lower horizontal portion connected to a lower end of the first vertical portion; an inner threshold, the inner threshold being arranged in a horizontal direction and extending in the length direction, one side of the inner threshold being connected to the outer threshold, the other side of the inner threshold being used to be connected to the container, the inner threshold being connected to the first vertical portion, and the first upper horizontal portion, the first lower horizontal portion, and the inner threshold facing the same direction relative to the first vertical portion; a sill reinforcement disposed at a bottom of the inner sill and connected to the inner sill and the outer sill, the sill reinforcement being connected to the container when the sill structure is mounted to the container; and a box body connector, the box body connector being connected to the other side of the inner door sill to connect the other side of the inner door sill to the container, the box body connector comprising a second vertical portion, a second upper horizontal portion connected to the upper end of the second vertical portion, and a second lower horizontal portion connected to the lower end of the second vertical portion, the second upper horizontal portion being connected to the other side of the inner door sill and used to be connected to the container, the second upper horizontal portion, the second lower horizontal portion, and the inner door sill facing the same direction relative to the second vertical portion; The threshold reinforcement is arranged between the inner threshold and the second lower horizontal portion, and the threshold reinforcement is also arranged between the inner threshold and the first lower horizontal portion. One side of the threshold reinforcement is connected to the first vertical portion, and the other side is connected to the second vertical portion. The threshold reinforcement is integrated with the inner threshold, the outer threshold and the box connector. The threshold structure further includes a drain pipe, which extends vertically through the inner threshold. The threshold structure further includes a backing plate and a fastener. The backing plate is disposed below the inner threshold and spaced apart from the inner threshold. A second through hole is disposed on the backing plate. The fastener extends through the drain pipe and the second through hole.

2. The threshold structure according to claim 1, characterized in that: The rocker structure includes a plurality of rocker reinforcements, and the plurality of rocker reinforcements are arranged at intervals along the length direction.

3. The threshold structure according to claim 1, characterized in that: The cross section of the rocker reinforcement is square, "C"-shaped, "L"-shaped or "U"-shaped.

4. The threshold structure according to claim 1, characterized in that: The internal thresholds include: a floor connector, the floor connector being spaced apart from the outer door sill to form a space, and the floor connector being used to be connected to the floor of the container when the door sill structure is mounted to the container; a heat insulating member, the heat insulating member being disposed below the floor connecting member and a portion of the heat insulating member being located at the interval; a support member connected to the outer door sill below the heat insulating member for supporting the heat insulating member; and A base plate is disposed below the support member, one side of the base plate is connected to the outer door sill, and the other side of the base plate is used to be connected to the bottom of the container.

5. The threshold structure according to claim 4, characterized in that: The support member comprises: a first support member; and A second support member, wherein the second support member is arranged below the first support member, and the strength of the second support member is higher than that of the first support member.

6. The threshold structure according to claim 5, characterized in that: There are multiple second support members, and the multiple second support members are arranged at intervals.

7. The door sill structure according to claim 4, characterized in that: The floor connecting member includes a first through hole, the drain pipe extends from the first through hole through the inner door sill in a vertical direction, and the fastener extends through the first through hole.

8. The threshold structure according to claim 1, characterized in that: The threshold structure includes a plurality of drain pipes, and the plurality of drain pipes are arranged at intervals along the length direction.

9. A container, characterized in that: The container comprises a box body and a threshold structure according to any one of claims 1 to 8.

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