JP2021172441A - Door structure and container - Google Patents

Abstract

To provide a door structure capable of allowing holding a rain shelter function in a state where a door is open.SOLUTION: An upper frame member 25 constitutes an edge part of a top face 29 of a container 10. A lower frame member 27 constituting an edge part of a bottom face 30 of the container 10 is provided below the upper frame member 25. Vertical frames 14, 16 connect the upper frame member 25 with the lower frame member 27 by extending in a vertical direction to form a linear guide groove 53 extending in the vertical direction. An upper plate 51 having a width being substantially equal to a distance between the vertical frames is supported around an axis parallel to the upper frame member 25 near an upper end of the vertical frame 14 in a freely and rotationally moving manner. A lower plate 52 having the width being substantially equal to the distance between the vertical frames is connected to a lower end of the upper plate 51 in the freely and rotationally moving manner. A lower end part of the lower plate 52 is freely elevated/lowered along the linear guide groove 53. A connection portion between the upper plate 51 and the lower plate 52 is bent so as to protrude outward beyond vertical frames 13 to 16.SELECTED DRAWING: Figure 3

Description

The present invention relates to a door structure of a loading platform of a container or truck used for freight transportation, mobile accommodation facilities, mobile medical facilities, mobile stores, and the like.

Conventionally, a container disclosed in Patent Document 1 is known. In the container disclosed in this document, the left and right side walls are composed of shutters as opening / closing members, and the front and rear end plates are rotatably attached to the frame material on the short side of the ceiling. The shutter can be wound up to the ceiling side, and in the wound state, the container is folded by rotating the end plate and lowering the ceiling portion to the floor surface.

The loading and unloading of contents such as cargo in this container is performed with the shutter on the side wall open. That is, for example, the work of loading and unloading the cargo at the loading / unloading entrance to the warehouse is performed with the side wall of the container close to the loading / unloading port. In this state, there is usually a gap between the container and the warehouse building, so when it rains, rain may enter and the cargo may get wet.

Japanese Unexamined Patent Publication No. 6-32186

An object of the present invention is to provide a door structure capable of providing a rain protection function when the door of a container or a truck bed is open.

The container according to the present invention comprises an upper frame member forming an edge portion of the top surface of the container, a lower frame member forming an edge portion of the bottom surface of the container, and extending in the vertical direction with a lower frame member provided below the upper frame member. The upper frame member and the lower frame member are connected to each other to form a guide groove extending in the vertical direction, and the width is substantially equal to the distance between the plurality of vertical frames. An upper plate rotatably supported around an axis parallel to the frame member, and a lower plate rotatably connected to the lower end of the upper plate having a width substantially equal to the distance between a plurality of vertical frames. The lower end of the lower plate can be raised and lowered along the guide groove, and the connecting portion between the upper plate and the lower plate is bent so as to protrude outward from the vertical frame.

Preferably, a guide shaft that engages with the guide groove is provided at the lower end of the lower plate, and the guide shaft can move from the lower end position close to the lower frame member to the upper end position close to the upper frame member.

Preferably, the upper plate and the lower plate are in close contact with each other and can be held in a horizontal state when the guide shaft is in the upper end position. In this state, the guide shaft may be rotatable around the center of rotation of the upper plate. Further, in this state, the upper plate and the lower plate may be held in a vertical state.

The container may be divided into upper and lower halves at approximately half the height, and may be composed of an upper portion of the container forming the upper half and a lower portion of the container forming the lower half. In this case, the upper part of the container can be raised and lowered with respect to the lower part of the container, and when the upper part of the container is lowered, the upper part of the container is housed in the lower part of the container, and the connecting portion between the upper plate and the lower plate is close to the lower frame member. It is preferable that it is configured as follows.

The door structure according to the present invention connects the upper frame member constituting the top edge of the rectangular parallelepiped housing, the bottom edge of the rectangular parallelepiped housing, and the upper frame member and the bottom edge extending in the vertical direction. Around an axis parallel to the upper frame member near the upper end of the vertical frame, which has a width substantially equal to the distance between the plurality of vertical frames having linear guide grooves extending in the vertical direction and the plurality of vertical frames. A lower plate having a width substantially equal to the distance between a plurality of vertical frames and rotatably connected to the lower end of the upper plate is provided, and the lower end portion of the lower plate is provided. Is movable up and down along a linear guide groove, and is characterized in that the connecting portion between the upper plate and the lower plate is bent so as to protrude outward from the vertical frame.

It is preferable that the upper plate and the lower plate have different vertical lengths.

According to the present invention, it is possible to obtain a door structure capable of providing a rain protection function in a state where the door of the loading platform of a container or a truck is opened.

It is a perspective view in the 1st state of the deformable container which concerns on 1st Embodiment of this invention. It is a perspective view in the 2nd state of the container of FIG. It is sectional drawing of the container for demonstrating the opening operation of a container door. It is a perspective view which shows the container which was set to the horizontal state with the container door open. It is a perspective view which shows typically the structure of a gearbox. It is a perspective view which shows the vertical frame and the auxiliary vertical frame, and has a part as a cross section. It is a top view which shows a vertical frame and an auxiliary vertical frame, and has a part as a cross section. It is sectional drawing of the container for demonstrating the opening operation of a container door in 2nd Embodiment of this invention. It is a top view which shows the vertical frame and the auxiliary vertical frame in 3rd Embodiment of this invention, and a part is a cross section. It is sectional drawing which shows the container door in 4th Embodiment of this invention. It is a perspective view of the state in which all the container doors of the container of the 5th Embodiment of this invention are closed. It is a perspective view of the state in which all the container doors of the container of the 5th Embodiment of this invention are opened. It is a perspective view which shows the opening and closing structure of the container door of 5th Embodiment. It is a perspective view which shows another opening and closing structure of the container door of 5th Embodiment. It is a side view which shows the structure in the open state of the container door of 5th Embodiment. It is a perspective view of the van type truck to which the door structure of 6th Embodiment is applied.

Hereinafter, embodiments of the present invention will be described with reference to the accompanying drawings.
1 and 2 are perspective views of a deformable container to which the door structure according to the first embodiment of the present invention is applied before and after deformation, and FIG. 3 is a cross-sectional view of the container.

The container 10 of the present embodiment is, for example, a substantially rectangular parallelepiped-shaped freezing container used for transporting frozen cargo, and refrigerators (not shown) are provided in front and rear portions in the longitudinal direction. The height of the refrigerator is lower than the upper end of the lower side wall 22 (FIG. 4) described later. Although the container 10 is longer than usual and has a length of 45 feet, the present invention is also applicable to a container of 40 feet or 20 feet.

The container 10 is divided into upper and lower halves at a height of about half, and is mainly composed of a container upper portion 11 forming the upper half portion and a container lower portion 12 forming the lower half portion. On the side surface of the upper portion 11 of the container, vertical frames 13 and 14 extending in the vertical direction are provided near the front end and the vicinity of the rear end in the longitudinal direction, respectively, and the vertical frames 15 and 16 are similarly provided on the side surfaces of the lower portion 12 of the container. Be done. The vertical frame 13 of the upper portion 11 of the container and the vertical frame 15 of the lower portion 12 of the container are located at positions corresponding to each other, and similarly, the vertical frame 14 and the vertical frame 16 are also located at positions corresponding to each other. That is, the vertical frames 13 and 15 extend in the vertical direction to connect the upper frame member 25 and the lower frame member 27, which will be described later, and the vertical frames 14 and 16 also extend in the vertical direction to connect the upper frame member 25 and the lower frame member 27. do. Further, a single auxiliary vertical frame 71 extending from the upper frame member 25 to the lower frame member 27 is provided between the vertical frames 13 and 15 and the vertical frames 14 and 16. The openings formed between the vertical frames 13 and 15 and the auxiliary vertical frame 71 and between the auxiliary vertical frame 71 and the vertical frames 14 and 16 are opened and closed by the container door 50, respectively.

The auxiliary vertical frame 71 is detachable from the upper frame member 25 and the lower frame member 27. The upper frame member 25 and the lower frame member 27 are provided with removable small pieces 72 so as to form a recess for avoiding interference between the upper frame member 25 and the lower frame member 27 when the auxiliary vertical frame 71 is attached / detached. ..

Wall plates 17 and 19 are provided in front of the vertical frames 13 and 15, and wall plates 18 and 20 are provided behind the vertical frames 14 and 16. The vertical frames 13 and 14 and the wall plates 17 and 18 form a part of the upper side wall on the container door 50 side, and the vertical frames 15 and 16 and the wall plates 19 and 20 form a part of the lower side wall on the container door 50 side. Constitute. Inside the container 10, the refrigerator is provided at a position corresponding to the front and rear sides of the vertical frames 15 and 16, that is, the wall plates 19 and 20.

The container upper part 11 can be raised and lowered with respect to the container lower part 12, and when the container upper part 11 is lowered, the lower gable walls 21 before and after the container lower part 12 and the lower side wall 22 (FIG. 4) provided on one side are displayed. It is housed inside the upper gable wall 23 before and after the container upper portion 11 and the upper side wall 24 (FIG. 4) provided on one side. This reduces the height and volume of the container 10. FIG. 1 shows a first state in which the upper part 11 of the container is raised and the cargo loading volume is maximized. FIG. 2 shows a second state in which the container upper portion 11 is lowered and the container volume is minimized. In the present embodiment, the second height (second position) of the container 10 in the second state is approximately half of the first height (first position) in the first state, and the container volume is also approximately half. .. Normally, the cargo is loaded into the container 10 in the first state, and when the cargo is empty, the container 10 is in the second state, but the cargo may be loaded in the second state as well.

As shown in FIGS. 1 and 2, the container upper portion 11 includes an upper frame member 25 assembled in a rectangular shape and four square members 26 extending downward from the four corners of the upper frame member 25. Be prepared. The lower portion 12 of the container includes a lower frame member 27 assembled in a rectangular shape, and four square members 28 extending upward from the four corners of the lower frame member 27. The upper frame member 25 is provided with a top surface 29, and an upper side wall 24 (FIG. 4) is provided between one longitudinal beam of the upper frame member 25 and the front and rear square members 26. That is, the upper frame member 25 constitutes the edge portion of the top surface 29. Further, an upper end wall 23 is provided between the front and rear beams of the upper frame member 25 and the left and right corner members 26, respectively. On the other hand, the lower frame member 27 is provided with a bottom surface 30 (FIG. 4), and a lower side wall 22 (FIG. 4) is provided between one longitudinal beam of the lower frame member 27 and the front and rear square members 28. That is, the lower frame member 27 constitutes the edge portion of the bottom surface 30. Lower end walls 21 are provided between the front and rear beams of the lower frame member 27 and the left and right corner members 28, respectively. A large number of auxiliary members (not shown) are hung inside the upper frame member 25 and the lower frame member 27 in the width direction.

The corner member 28, the lower side wall 22, and the lower gable wall 21 of the container lower part 12 are arranged inside the corner member 26, the upper side wall 24, and the upper gable wall 23 of the container upper part 11, respectively. As a result, in the second state, the square member 28, the lower side wall 22, and the lower end wall 21 are housed inside the corner member 26, the upper side wall 24, and the upper end wall 23, and in the first state, the corner member 28 and the lower end wall 21. The upper end portion of the side wall 22 is arranged inside the lower end portion of the square member 26 and the upper side wall 24, respectively.

The container door 50 is composed of an upper plate 51 and a lower plate 52. The upper plate 51 has a width substantially equal to the distance between the vertical frame 13 and the auxiliary vertical frame 71 and the distance between the auxiliary vertical frame 71 and the vertical frame 14, and the upper frame near the upper ends of the vertical frames 13 and 14. It is rotatably supported around an axis parallel to the member 25. The lower plate 52 has a width substantially equal to the distance between the vertical frame 15 and the auxiliary vertical frame 71 and the distance between the auxiliary vertical frame 71 and the vertical frame 16, and is rotatably connected to the lower end of the upper plate 51. Will be done. As will be described later, the lower end portion (that is, the guide shaft 57) of the lower plate 52 can be raised and lowered along the linear guide groove 53 (FIG. 3) formed in the vertical frame 13 to 16 and the auxiliary vertical frame 71. The connecting portion between the upper plate 51 and the lower plate 52 can be bent so as to project outward from the vertical frames 13 to 16 and the auxiliary vertical frame 71.

The structure of the container door 50 will be described with reference to FIG. The vertical frames 14 and 16 are aligned in the vertical direction, and a linear guide groove 53 is formed on the opening side surface of the container 10. The linear guide groove 53 is continuous in the vertical frames 14 and 16 and extends in the vertical direction. The rotary shaft 54 fixed to the upper end of the upper plate 51 is rotatably supported at the upper end of the vertical frame 14, and the upper plate 51 is rotatable around the rotary shaft 54. The rotary shaft 54 is rotationally driven by a drive motor 60 (FIG. 5) as described later, whereby the upper plate 51 rotates. The lower end of the upper plate 51 and the upper end of the lower plate 52 are connected by a hinge 55. The hinge 55 is provided so as to fit in a recess formed in the inner wall surface (inner surface of the container) of the upper plate 51 and the lower plate 52, and is provided from the inner wall surface of the upper plate 51 and the lower plate 52 except for the connecting shaft 56. Does not protrude.

A guide shaft 57 that engages with the linear guide groove 53 is provided at the lower end of the lower plate 52. The guide shaft 57 can move from the lower end position close to the lower frame member 27 to the upper end position close to the upper frame member 25. When the guide shaft 57 is in the lower end position, the upper plate 51 and the lower plate 52 are on the same plane, and the container door 50 closes the opening of the container (reference numeral (a)). When the guide shaft 57 is between the upper end position and the lower end position, the upper plate 51 and the lower plate 52 are bent so that the hinge 55 is on the outside of the container, and the lower part of the opening is opened (reference numeral (b)). By locking the rotating shaft 54 while the guide shaft 57 is in the upper end position, the upper plate 51 and the lower plate 52 can be held in a horizontal state in close contact with each other (reference numeral (c)). In order to ensure that the upper plate 51 and the lower plate 52 are kept in a horizontal state, members that support the surface of the lower plate 52 from below may be provided on the vertical frames 13 and 14.

The upper end portion of the vertical frame 14 is a gearbox 58, which is formed thicker than the other portions, and an arc-shaped guide groove 59 branching from the linear guide groove 53 is formed. The guide shaft 57 can be engaged with the arcuate guide groove 59. The arc-shaped guide groove 59 has an arc shape centered on the rotation shaft 54, and therefore the guide shaft 57 can rotate and move around the rotation center (rotation shaft 54) of the upper plate 51. As the guide shaft 57 rotates upward along the arcuate guide groove 59, the upper plate 51 and the lower plate 52 rotate so as to come downward while the upper plate 51 and the lower plate 52 are in close contact with each other, resulting in a vertical state. , Can be held in that state (reference numeral (d)).

The structure inside the gearbox 58 will be described with reference to FIG. The guide shaft 57 is guided in the vertical direction along the linear guide groove 53, and at the upper end of the linear guide groove 53, the guide shaft 57 can move to the arc-shaped guide groove 59 branching from the linear guide groove 53. On the other hand, the rotating shaft 54 of the upper plate 51 is always at the uppermost position of the linear guide groove 53, and the rotating shaft 54 is coaxially provided with the first gear 61.
The first gear 61 meshes with the second gear 62 provided on the output shaft of the drive motor 60.

In the state shown in FIG. 5, since the guide shaft 57 is in the raised position and is close to the rotating shaft 54, the upper plate 51 and the lower plate 52 are in the horizontal state as shown in FIG. 3 (c). Here, when the drive motor 60 is activated and the first gear 61 rotates counterclockwise in FIG. 5, the guide shaft 57 enters the arcuate guide groove 59, and the upper plate 51 and the lower plate 52 surround the rotation shaft 54. Rotates counterclockwise. Therefore, the upper plate 51 and the lower plate 52 face vertically downward and stop at this position (FIG. 3 (d)).

The configurations of the vertical frames 14 and 16 and the auxiliary vertical frame 71 forming the linear guide groove 53 will be described with reference to FIGS. 6 and 7. In these figures, the wall plate 18, the vertical frame 14, and the auxiliary vertical frame 71 are shown cut by a horizontal plane corresponding to the upper end of the wall plate 20 of the lower portion 12 of the container.

The vertical frame 16 of the lower portion 12 of the container has a flat plate portion 81 that is flush with the outer surface of the wall plate 20, and the flat plate portion 81 projects toward the auxiliary vertical frame 71 side from the end surface of the wall plate 20. An end plate portion 82 that is in close contact with the end surface of the wall plate 20 is continuously provided in the flat plate portion 81, and the end plate portion 82 faces the flat plate portion 81 on the opposite side to the flat plate portion 81 and the tip is the flat plate portion 81. An outer engaging portion 83 bent to the side is provided. The vertical frame 14 of the upper portion 11 of the container has a flat plate portion 84 that is flush with the outer surface of the wall plate 18, and the flat plate portion 84 is continuously provided with an end plate portion 85 that is in close contact with the end surface of the wall plate 18. A flat plate portion 86 slidably contacting the outer surface of the flat plate portion 81 of the lower portion 12 of the container is continuously provided in the end plate portion 85, and the flat plate portion 86 has the flat plate portion 81, the end plate portion 82, and the engaging portion 83. An inner engaging portion 87 that slidably contacts the inner wall surface is continuously provided. A linear guide groove 53 is formed by the flat plate portion 81, the end plate portion 82, the outer engaging portion 83, and the inner engaging portion 87 of the vertical frame 16 located below the vertical frame 14.

On the other hand, the auxiliary vertical frame 71 is formed with a linear guide groove 53 that faces the inner engaging portion 87 of the vertical frame 14 and extends in the vertical direction, and the container door 50 is supported by the vertical frames 14 and 16 and the auxiliary vertical frame 71. Will be done. Similarly, the auxiliary vertical frame 71 is formed with linear guide grooves 53a facing the vertical frames 13 and 15 (FIG. 1). A box body (not shown) similar to the gear box 58 is provided at the upper end of the auxiliary vertical frame 71, and an arc-shaped guide groove branching from the linear guide groove is formed in this box body. The upper ends of the linear guide groove and the arc-shaped guide groove are open so that the rotating shaft 54 and the guide shaft 57 can pass through when the auxiliary vertical frame 71 is removed.

The opening / closing operation of the container door 50 will be described again with reference to FIGS. 2 to 5.
When the drive motor 60 is activated and the rotary shaft 54 is rotationally driven clockwise in FIG. 5 in the state where the container door 50 is closed (FIG. 3A), the tip of the upper plate 51 is displaced outward and the tip of the upper plate 51 is displaced outward. The upper plate 51 begins to rotate upward. At this time, in order to facilitate the start of the upper plate 51, an assist mechanism for urging the connecting portion with the lower plate 52 outward may be provided, or the operator may pull the connecting portion outward. ..

With the rotation of the upper plate 51, the upper end of the lower plate 52 is displaced outward, so that the guide shaft 57 rises along the linear guide groove 53 and begins to open the opening (FIG. 3 (b)). .. Further, when the upper plate 51 is set to be horizontal by driving the drive motor 60, the guide shaft 57 reaches the upper end of the linear guide groove 53, that is, the point where the arc-shaped guide groove 59 branches, and the lower plate 52 also It is set to a horizontal state (Fig. 3 (c)). In this state, as shown in FIG. 4, the opening is fully opened, the cargo can be taken in and out of the container 10, and the container door 50 acts as a canopy, so that the cargo gets wet with rain, for example, in rainy weather. Can be prevented.

When the upper plate 51 and the lower plate 52 are in a horizontal state, when the drive motor 60 is rotationally driven in the opposite direction to the conventional one, the guide shaft 57 enters the arcuate guide groove 59, and the upper plate 51 and the lower plate 52 are inserted into the arc-shaped guide groove 59. While the 52 is in close contact, it rotates downward around the rotation shaft 54. That is, the guide shaft 57 rotates upward along the arcuate guide groove 59, and the lower half of the opening is opened (FIG. 3 (d)). In this state, after removing the auxiliary vertical frame 71, the container upper portion 11 is lowered with respect to the container lower portion 12, so that the connecting portion between the upper plate 51 and the lower plate 52 comes close to the lower frame member 27. Here, when the auxiliary vertical frame 73 having a length about half that of the auxiliary vertical frame 71 is attached to the gap formed between the two container doors 50, the container 10 is in the second state shown in FIG.

When the container 10 is in the first state and the opening is half-opened (FIG. 3D), the drive motor 60 is driven to rotate the upper plate 51 and the lower plate 52 to the horizontal state to fully open the opening. Can be done (FIGS. 3 (c) and 4). When the upper plate 51 is rotated downward by driving the drive motor 60 from this state, the guide shaft 57 descends along the linear guide groove 53, whereby the upper plate 51 and the lower plate 52 are shown in FIG. After the state shown in 3 (b), it can be changed to the fully closed state shown in FIG. 3 (a).

By switching the rotation direction of the drive motor 60 in this way, the guide shaft 57 located at the branch point between the linear guide groove 53 and the arc-shaped guide groove 59 is selectively selected to be the linear guide groove 53 or the arc-shaped guide groove 59. It is preferable to chamfer the lower corner portion of the entrance portion of the arcuate guide groove 59 in order to lead to.

It is also possible to omit the drive motor 60 and manually open and close the container door 50. That is, the rotating shaft 54 may be rotated and the guide shaft 57 may be raised or lowered by using a wire or the like.

As described above, since the upper plate 51 and the lower plate 52 are rotationally driven by the action of the drive motor 60 or manually in the opening operation, it is preferable that the upper plate 51 and the lower plate 52 are as light as possible. Therefore, as the upper plate 51 and the square wall plate 52, for example, one formed by attaching an aluminum plate to a thin plate-shaped member formed by combining a large number of carbon wires in a mesh shape may be adopted. Such a lightweight plate member can be applied not only to the container door 50 but also to all the wall surfaces constituting the side surface and the end surface and the top surface.

Next, a configuration for switching the container 10 between the first state and the second state will be described. The upper part 11 of the container is raised and lowered by, for example, four hydraulic cylinders arranged inside the square members 26 and 28, and the hydraulic cylinders are operated by, for example, a hydraulic system arranged below the bottom surface 30. The hydraulic system is driven by a motor or manually, the motor may be incorporated under the bottom surface 30, or an external motor may be connected through a connector. Further, the elevating device is not limited to the hydraulic cylinder, but may be, for example, a method of manually driving a motor or a mechanical elevating mechanism. Further, for example, a pair of holes 25A into which a fork of a forklift is inserted may be provided in the central portion of the longitudinal member of the upper frame member 25 of the container 10 so that the upper part 11 of the container can be raised and lowered by using the forklift. The pair of holes 25A may be provided on one side of the longitudinal member, may be provided on both sides, or may be provided in a plurality of holes on each member. Further, the pair of holes 25A may be provided in the central portion of the upper frame member 25 in both lateral sides. The hole 25A may be provided in parallel with the hydraulic cylinder, the motor, or a mechanical elevating mechanism such as a manual one, or may be provided independently.

The square members 26 and 28 are each provided with a fixing mechanism 70 for fixing the position between the two members. The fixing mechanism 70 may be, for example, a snap lock provided with a toggle mechanism. For example, a latch fitting is provided at the lower end of the square member 26 of the upper portion 11 of the container, and the square member 28 of the lower portion 12 of the container is engaged with a latch fitting having a toggle mechanism at a position corresponding to the first state and the second state. An engaging portion such as a matching hole is provided. That is, the fixing mechanism 70 integrates the upper part 11 of the container and the lower part 12 of the container vertically in each state.

In the first state, the upper frame member 25 is arranged inside the container. For example, it may be configured to be supported by the lower frame member 27 through four columns. When the container is deformed from the first state to the second state, each column is tilted in the longitudinal direction in the container, whereby the upper portion 11 of the container can be lowered. In the second state, the upper frame member 25 is supported by the lower frame member 27 through one or both of the square members 26 and 28.

In the second state shown in FIG. 2, the container 10 is closed by the container door 50, but even in this state, the container door 50 can be opened to load and unload cargo.

Further, in the present embodiment, since the refrigerators are provided on the front and rear sides of the vertical frames 13 to 16, the cold air ejected from the refrigerators can be uniformly distributed in the container and the cargo can be cooled efficiently.

In the present embodiment, the container door 50 is provided only on one side surface of the container 10, but it can also be provided on both side surfaces.

Further, the container door 50 may be provided on the end surface instead of the side surface of the container 10.
Further, it is not essential that the container 10 is divided into upper and lower parts at a height of about half, and the present invention can be applied to a container having a constant height such as a normal container. In this case as well, the container door 50 may be provided on the side surface of the container body or on the end surface.

The present invention is not limited in the length of the container and can be applied not only to 45 feet but also to 40 feet and 20 feet containers. Further, the present invention is not limited in the configuration in which the container is installed, and can be applied to a container loaded on a ship, a container mounted on a truck, a container mounted on a trolley, and a container mounted on land. ..

In order to maintain the airtightness inside and outside the container 10, it is preferable that the connecting portion between the upper plate 51 and the lower plate 52 is sealed by a sealing member made of silicon, rubber, or the like inside the container 10.

FIG. 8 shows a second embodiment of the present invention, which corresponds to FIGS. 3 (c) and 3 (d) of the first embodiment. The difference from the first embodiment is that the upper plate 51 of the container door 50 can be accommodated in a horizontal state below the top surface 29, and other configurations are the same as those of the first embodiment. That is, a ceiling guide member 100 is provided immediately below the top surface 29, and the ceiling guide member 100 is formed at a right angle to the linear guide groove 53 and is continuously formed in the linear guide groove 53. A horizontal guide groove 101 is formed. Further, the rotating shaft 54 is not fixed to the upper end portion of the vertical frame 14, and can move along the horizontal guide groove 101. Two wires (not shown) are connected to the rotating shaft 54. The first wire is for pulling from the end of the horizontal guide member 100 (on the right side in FIG. 8), and the second wire is for rotating the rotation shaft 54.

In the container door 50 of the second embodiment, the rotating shaft 54 is usually fixed to the upper end portion of the vertical frame 14 by fixing the first wire, and in this state, the second wire is operated. Therefore, it can be released from the closed state in the same manner as in FIGS. 3 (a) and 3 (b). In the fully open state shown in FIG. 8A, by pulling the first wire, the rotating shaft 54 moves along the horizontal guide groove 101, and the upper plate 51 is housed in the container while maintaining the horizontal state. .. At this time, the lower plate 52 moves downward while rotating clockwise as the guide shaft 57 is guided by the linear guide groove 53, and becomes a vertical state as shown in FIG. 8B, and is above the opening. Close half.

By lowering the container upper portion 11 in the state shown in FIG. 8B, the container 10 is defined in the second state (see FIG. 2) as in the first embodiment. Other effects are the same as in the first embodiment.

FIG. 9 shows a third embodiment of the present invention, which corresponds to FIG. 7 of the first embodiment. The difference from the first embodiment is that the linear guide groove 53 is provided along the vertical frame 14 of the upper portion 11 of the container, and other configurations are the same as those of the first embodiment. That is, the vertical frame 14 of the container upper portion 11 has a flat plate portion 102 that is flush with the outer surface of the wall plate 18, and the flat plate portion 102 is closer to the auxiliary vertical frame 71 (see FIG. 6) than the end surface of the wall plate 18. It protrudes and the tip is bent inside the container to form the outer engaging portion 103. An end plate portion 104 that is in close contact with the end surface of the wall plate 18 is continuously provided on the flat plate portion 102, and a flat plate portion that faces the outer engaging portion 103 on the opposite side of the end plate portion 104 from the outer engaging portion 103. 105 is provided. The vertical frame 16 of the lower portion 12 of the container has a flat plate portion 106 that is flush with the outer surface of the wall plate 20, and the flat plate portion 106 is continuously provided with an end plate portion 107 that is in close contact with the end surface of the wall plate 20. At the tip of the flat plate portion 106, a sliding flat plate portion 108 slidably contacting the outer surface of the flat plate portion 105 of the container upper portion 11 is continuously provided, and the sliding flat plate portion 108 includes the flat plate portion 105 and the end plate portion 104. An inner engaging portion 109 slidably contacting the inner wall surface of the outer engaging portion 103 is continuously provided.

FIG. 10 shows a fourth embodiment of the present invention, which corresponds to FIG. 3 (b) of the first embodiment. The difference from the first embodiment is that the number of plates constituting the container door 50 is four, and the other configurations are the same as those of the first embodiment. That is, the container door 90 is composed of the first to fourth plate members 91 to 94. The connecting portion 97 of the first plate member 91 and the second plate member 92, and the connecting portion 98 of the third plate member 93 and the fourth plate member 94 can be projected outward, and the second to fourth plate members 92 to 94 The guide shafts 95, 96, and 57 that engage with the guide groove 53 are provided on the guide shafts 95, 96, and 57, respectively. The number of plates constituting the container door 50 may be, for example, eight, and the number of plates can be increased or decreased as needed.

In each of the above embodiments, the auxiliary vertical frames 71 and 73 may be omitted depending on the length of the container and the like.

11 and 12 are perspective views before and after opening and closing the door of the container according to the fifth embodiment to which the door structure of the present invention is applied. FIG. 11 is a state in which all the container doors are closed, and FIG. 12 is a container door. Is shown to be fully open.

The container 10 of the first embodiment can be deformed between the first state and the second state whose height is half of that, but the container 200 of the fifth embodiment does not have a deforming function. As shown in FIGS. 11 and 12, the container 200 does not have the vertical frames 13, 14, 15, and 16 extending in the vertical direction like the container 10, and the upper frame member 25 includes the upper frame member 25 and the lower frame. It is supported at a constant height by four columns 202 provided at the four corners of the member 27. On the other hand, similarly to the container 10 of the first embodiment, a single removable auxiliary vertical frame 71 is provided between the upper frame member 25 and the lower frame member 27 at the center of the side surface of the container 200. The auxiliary vertical frame 71 of the present embodiment includes a lock mechanism 71A, and can be locked in a state where the auxiliary vertical frame 71 is engaged with the small piece 72 by operating the lock mechanism 71A. For example, the lock mechanism 71A is provided with levers (for example, a pair of front and back levers), and by pushing down the levers, an auxiliary member (not shown) slides in the length direction to increase the length of the auxiliary vertical frame 71. That is, when locking, the lever is pushed down to engage both ends of the auxiliary vertical frame 71 with the small piece 72, and when unlocking, the lever is pushed up to release the engagement with the small piece 72.

The container door 204 of the fifth embodiment is provided between the columns 202 and between the columns 202 and the auxiliary building frame 71, respectively. The container door 204 of the container 200 is composed of an upper plate 206 and a lower plate 208 like the container 10 of the first embodiment, but in the fifth embodiment, the gearbox 58 and the arc-shaped guide groove are formed as in the first embodiment. It does not have a configuration corresponding to 59. That is, as shown in FIG. 12, when the container door 204 is fully opened, the upper plate 206 and the lower plate 208 are bent around the hinge 55 and held in a state of extending outward in an eaves shape. In FIG. 12, the bottom surface (floor surface) 30 of the container 200 is shown in a removed state. Similar to the first embodiment, the upper side of the upper plate 206 is rotationally supported by the rotating shaft 54 along the lower side of the upper frame member 25, and the lower side of the lower plate 208 passes through the guide shaft 57 of the support column 202 and the auxiliary vertical frame 71. It engages with the linear guide groove 53 provided along the side side so as to be able to move up and down and to rotate.

At both ends near the upper end of the lower plate 208, a lock mechanism 208A with a knob that engages with the support column 202 and the auxiliary vertical frame 71 to lock the container door 204 in a closed state is provided. Further, a handle 208B held by the operator during the opening / closing operation of the container door 204 is provided at the central portion near the lower end of the lower plate 208.

FIG. 13 is a perspective view illustrating the opening / closing mechanism 209 of the container door 204 according to the fifth embodiment. FIG. 13A shows a state in which the container door 204 is closed, and FIG. 13B shows a state in which the container door 204 is being opened. As shown in FIG. 13, one ends of the tow ropes 210A and 210B using wires or the like are attached to both ends of the lower side 208C of the lower plate 208 of the fifth embodiment, respectively.

The towline 210A, one end of which is attached to one end of the lower side 208C of the lower plate 208, extends vertically and is bent at a right angle by a guided pulley 212A provided near one end of the upper side of the upper plate 206. It extends horizontally along the upper edge toward the other end of the upper plate 206. The towline 210A is extended downward by a guided pulley 212B provided near the other end of the upper side of the upper plate 206, and the other end of the towline 210A is connected to one towline 210 via a node 210C. Be connected. On the other hand, the towline 210B, one end of which is attached to the other end of the lower side 208C of the lower plate 208, extends in the vertical direction and is approximately 180 due to the guided pulley 212C provided near the other end of the upper side of the upper plate 206. It is bent and extends vertically downward, and the other end becomes one with the towline 210A via the nodal point 210C and is connected to the towline 210.

The towline 210, one end of which is connected to the nodal point 210C, extends vertically downward and is bent 90 degrees horizontally via a guided pulley 212D, and the other end is attached through the ratchet mechanism 214 to one end of the towline 210B. It is attached near one end of the lower side of the lower plate 208.

As shown in FIG. 13A, when the container door 204 is closed, the crunodes 210C of the towline 210, 210A, 210B are located near the upper side of the top plate 206, and most of the towline 210 is ratcheted. It is on the node 210C side of the mechanism 214. When opening the container door 204, the operator pulls out the towline 210 attached to the lower plate 208 side of the ratchet mechanism 214 from the ratchet mechanism 214 and lowers the nodal point 210C downward. As the node 210C descends, the tow ropes 210A and 210B attached to each end of the lower side 208C of the lower plate 208 are pulled up, and the lower side 208C becomes a linear guide groove 53 as shown in FIG. 13 (b). Lifted along. At this time, the tow rope 210 tries to be pulled back by the weight of the container door 204, but the ratchet mechanism 214 restricts the pulling rope 210 from returning, and prevents the container door 204 from closing due to its own weight. When closing the container door 204, the ratchet stop is released by operating the operation unit of the ratchet mechanism 214. As a result, the container door 204 is lowered and closed by its own weight. The closed container door 204 can be locked by the lock mechanism 208A with a knob as described above.

FIG. 14 is a perspective view showing the structure of another opening / closing mechanism 216 of the container door 204 of the fifth embodiment. The opening / closing mechanism 216 of FIG. 14 is an electric opening / closing mechanism. Similar to FIG. 13, FIG. 14A shows a state in which the container door 204 is closed, and FIG. 14B shows a container door 204. Shows the state in which is being opened.

In the example of FIG. 14, the tow ropes 210A and 210B are both horizontal along the upper side of the upper plate 206 via the guided pulleys 212A and 212C, and both extend toward the center of the upper side of the upper plate 206. .. The tow ropes 210A and 210B are then bent horizontally at right angles to the inside of the container by the guided pulleys 213A and 213B, and the other end of each is attached to the take-up drum 218. The take-up drum 218 is connected to, for example, an electric motor 220 equipped with a worm gear reducer, and the tow ropes 210A and 210B can be taken up / unwound by the take-up drum 218. The operator can open and close the container door 204 by controlling the rotation direction of the electric motor 220, but when closing the door, the weight of the container door 204 does not drive the electric motor 220. The tow ropes 210A and 210B may be pulled out from the take-up drum 218.

FIG. 15 is a diagram for explaining the difference in effect due to the difference in the setting of the upper plate 206 and the lower plate 208 of the container door 204, and FIGS. 15 (a) and 15 (b) show the container door 204 having different settings. Is shown as a side view when the door is placed in the open position (the position where it extends in the shape of an eaves). That is, in FIG. 15A, the vertical length of the lower plate 208 is slightly shorter than the vertical length of the upper plate 206 (for example, 0.5% to 2.0% shorter, and more specifically, about 1). Fig. 15 (b) shows the arrangement when the setting is made (0.3% shorter). On the contrary, FIG. 15 (b) shows that the vertical length of the lower plate 208 is slightly longer than the vertical length of the upper plate 206 (for example, 0.5% to 0.5%). The arrangement when the setting is 2.0% longer, more specifically about 1.3% longer) is shown.

In the setting of FIG. 15A, the tip of the lower plate 208 faces downward by an angle α, and the moment generated in the lower plate 208 acts in the direction of pushing up the lower side (guide shaft 57) of the lower plate 208. Therefore, in the setting of FIG. 15A, the container door 204 is locked in the illustrated state, and the container door 204 is prevented from naturally lowering due to its own weight. Therefore, when closing the container door 204, the operator needs to grasp the handle 208B and pull the lower plate 208 downward.

On the other hand, in the setting of FIG. 15B, the tip of the lower plate 208 is upward by an angle α, and the moment generated in the lower plate 208 acts in the direction of pushing down the lower side (guide shaft 57) of the lower plate 208. Therefore, in the setting of FIG. 15B, the container door 204 is locked in the illustrated state, and the container door 204 is prevented from naturally lowering due to its own weight. Therefore, when closing the container door 204, the lower plate 208 is lowered by its own weight and the container door 204 is closed by simply loosening the restrictions on the tow ropes 210, 210A, 210B and the like.

As described above, according to the configuration of the fifth embodiment, the container door can be easily opened and closed with a simple configuration, and the door can be provided with a rain protection function when the container door is opened. Further, by making the lengths of the upper plate and the lower plate of the container door different in the vertical direction, different settings can be provided.

FIG. 16 shows an example in which the door structure used for the container door of the fifth embodiment is applied to the side wall and the back surface of the van 224 of the truck bed. As shown in FIG. 16, the same effect can be obtained by applying the structure of the container door of the fifth embodiment to the van truck. Although the door structure of the fifth embodiment is applied in FIG. 16, the door structure of another embodiment such as the first embodiment can also be applied.

10 Container 13 to 16 Vertical frame 25 Upper frame member 27 Lower frame member 29 Top surface 30 Bottom surface 51 Upper plate 52 Lower plate 53 Linear guide groove 71 Auxiliary vertical frame

Claims (8)

The upper frame member that constitutes the edge of the top surface of the container,
The lower frame member, which constitutes the edge of the bottom surface of the container and is provided below the upper frame member,
A plurality of vertical frames extending in the vertical direction to connect the upper frame member and the lower frame member to form a linear guide groove extending in the vertical direction, and a plurality of vertical frames.
An upper plate having a width substantially equal to the distance between the plurality of vertical frames and rotatably supported around an axis parallel to the upper frame member in the vicinity of the upper end of the vertical frame.
A lower plate having a width substantially equal to the distance between the plurality of vertical frames and rotatably connected to the lower end of the upper plate is provided.
The lower end of the lower plate can be raised and lowered along the linear guide groove.
A container characterized in that the connecting portion between the upper plate and the lower plate is bent so as to project outward from the vertical frame. A guide shaft that engages with the linear guide groove is provided at the lower end of the lower plate, and the guide shaft can move from a lower end position close to the lower frame member to an upper end position close to the upper frame member. The container according to claim 1, wherein the container is provided. The container according to claim 2, wherein the upper plate and the lower plate are in close contact with each other and can be held in a horizontal state when the guide shaft is in the upper end position. The container according to claim 3, wherein the guide shaft can rotate and move around the rotation center of the upper plate in a state where the guide shaft is at the upper end position. The container according to claim 3, wherein the upper plate and the lower plate can be held in a vertical state when the guide shaft is in the upper end position. The container is divided into upper and lower parts at about half the height, and is composed of an upper part of the container which constitutes the upper half and a lower part of the container which constitutes the lower half, and the upper part of the container can be raised and lowered with respect to the lower part of the container. The fifth aspect of the present invention is characterized in that, in a state where the upper part of the container is lowered, the upper part of the container is housed in the lower part of the container, and the connecting portion between the upper plate and the lower plate is close to the lower frame member. The listed container. The upper frame member that constitutes the edge of the top surface of the rectangular parallelepiped housing,
The edge of the bottom surface of the rectangular parallelepiped housing and
A plurality of vertical frames extending in the vertical direction to connect the upper frame member and the edge of the bottom surface to form a linear guide groove extending in the vertical direction.
An upper plate having a width substantially equal to the distance between the plurality of vertical frames and rotatably supported around an axis parallel to the upper frame member in the vicinity of the upper end of the vertical frame.
A lower plate having a width substantially equal to the distance between the plurality of vertical frames and rotatably connected to the lower end of the upper plate is provided.
The lower end of the lower plate can be raised and lowered along the linear guide groove.
A door structure characterized in that the connecting portion between the upper plate and the lower plate is bent so as to project outward from the vertical frame. The door structure according to claim 6, wherein the upper plate and the lower plate have different vertical lengths.

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