container

Abstract

To provide a container that can improve the workability when opening and closing the door component. [Solution] The container 1 is equipped with a door member 9 that can change between an open state, which opens a side opening 8 provided on one long side of the container 1, and a closed state, which closes the side opening 8. The door member 9 is equipped with a rotating door member 11 that is rotatably connected to the main body side of the container 1 so as to be rotatable and displaceable with respect to the main body side of the container 1, with its central axis extending along the lower edge of the side opening 8; a sliding door member 12 that is slidably connected to the main body side of the container 1 along both side edges of the side opening 8; and an intermediate door member 13 that is rotatably connected to the rotating door member 11 and rotatably connected to the sliding door member 12. When the door member 9 is in the open state, the rotating door member 11 and the intermediate door member 13 are folded so as to overlap. The sliding door member 12 is equipped with an operating part 56 that can be operated in both the open and closed states of the door member 9.

Description

Technical Field

[0001] The present invention relates to a container used for transporting articles and the like.

Background Art

[0002] Conventionally, as a container used for transporting articles and the like, a container is known that includes a bottom wall component having a substantially rectangular shape in plan view and side wall components extending upward from respective side edges of the bottom wall component. Further, in order to facilitate the operation of taking in and out the articles stored in the container, an opening (side surface opening) is provided in a predetermined side wall component, and a door member that is rotatably connected to the lower edge portion of the side surface opening and opens and closes the side surface opening is provided (for example, see Patent Document 1 and the like).

Prior Art Documents

Patent Documents

[0003]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0004] The door member of Patent Document 1 described above is in the form of a single plate, and the side surface opening is opened by rotating and displacing to the outer side of the container. By the way, in a state where the side surface opening is opened, the upper side portion of the door member is in a state of being relatively largely separated from the side surface opening (the main body of the container). For this reason, there is a concern that the workability when closing the door member becomes relatively poor, and it becomes necessary to secure a relatively wide space for opening the door member.

[0005] The present invention has been made to solve the above-exemplified problems and the like, and an object thereof is to provide a container capable of improving the workability when opening and closing a door member.

Means for Solving the Problems

[0006] The following sections will describe each means suitable for achieving the above objectives. Additionally, specific effects and benefits of each means will be noted as needed.

[0007] Means 1. A bottom wall portion that is roughly rectangular in plan view, A container comprising side walls extending upward from each side of the bottom wall, At least one of the sides of the container formed by the side wall portion is provided with a side opening that penetrates in the inward and outward direction of the container. The container is equipped with a door member that can change between an open state, which opens the side opening, and a closed state, which closes the side opening. The aforementioned door member is A rotating door member is connected to the main body of the container so as to be rotatable and displaceable with respect to the container body, such that its central axis extends along a predetermined edge of the side opening. A sliding door member is connected to the main body of the container so as to be slidable relative to the edge of the side opening, along an edge of the side opening that extends in a direction perpendicular to the predetermined edge, The system includes an intermediate door member that is rotatably connected to the aforementioned rotating door member and rotatably connected to the aforementioned sliding door member, The door member is configured to fold so that when it is in the open state, the rotating door member and the intermediate door member overlap. The intermediate door member and the rotating door member rotate in conjunction with the sliding displacement of the sliding door member, so that the door member can change between the open state and the closed state. The container is characterized in that the sliding door member is provided with an operating part that can be operated in both the open state and the closed state of the door member.

[0008] According to method 1, the door member comprises a rotating door member, a sliding door member, and an intermediate door member, and when the door member is opened, the rotating door member and the intermediate door member are folded so that they overlap. For this reason, compared to a configuration in which the door member to be opened is not folded, for example, the space required to allow the rotational displacement and arrangement of the door member when opening the door member can be made relatively small. Accordingly, it is relatively easy to secure space for opening the door member (making it relatively easy to remove objects from the rotational trajectory of the door member, and allowing the door member to be opened even when the container is installed in a relatively narrow space). Furthermore, by sliding the sliding door member along the side of the container in which the side opening is provided, the side opening can be opened and closed, and the sliding door member is provided with an operating part that can be operated for both opening and closing the side opening. Accordingly, the worker can suitably open and close the side opening at a position relatively close to the container (main body) (and at a position facing the door member) without having to change their posture significantly. As a result, it is possible to improve the workability and convenience when opening and closing the door components.

[0009] Furthermore, it may be stated that "the side wall portion facing the door member is provided with a handle portion on which the container can be gripped when lifting it, and the operating portion of the door member is configured to be usable as the handle portion on the door member." In this case, the ease of carrying the container is improved, and the container can be carried by gripping the handle portion on the side wall without having to change hands after operating the operating portion to close the door member.

[0010] Means 2. The container according to Means 1, characterized in that the container is provided with a rotation restricting means for restricting the rotational displacement of the sliding door member when the door member is changing state between the open state and the closed state, and when it is in the closed state.

[0011] According to method 2, the posture of the sliding door member can be maintained when opening and closing the door member, improving the workability of sliding the sliding door member, and allowing the rotational displacement of the rotating door member and the intermediate door member to be performed as set.

[0012] Means 3. The sliding door member is configured to be slidable in the vertical direction, The side opening extends in a direction perpendicular to the closed door member, and its left and right side edges are defined by the inner surfaces of a pair of side walls located on both sides of the closed door member. The container according to means 1, characterized in that the sliding door member is connected to the pair of side walls so as to be slidable and displaceable, and the rotating door member is connected to the bottom wall or a portion near thereto so as to be rotatable and displaceable.

[0013] According to method 3, the area of ​​the side opening can be made as large as possible, improving the work efficiency when loading and unloading items through the side opening. Furthermore, because the side opening is configured to be relatively large, the door member is also configured to be relatively large, and as with method 1 above, the door member, when opened, folds up relatively compactly, resulting in a more pronounced improvement in workability and convenience when opening and closing the door member.

[0014] Means 4. The sliding door member is provided with sliding engagement portions on both sides of the sliding door member, The pair of side wall portions extend along the side edge of the side opening and are provided with a slide-engaged portion that is engaged with the slide-engaging portion. The container according to means 3, characterized in that each of the slide engaging portions is engaged with each of the slide engaged portions from the outside of the container.

[0015] According to means 4, the slide engaging portion of the slide door member can restrict the pair of side wall portions (which are likely to tilt and displace outward of the container due to the provision of the side surface opening) from tilting and displacing outward of the container.

[0016] Means 5. The container includes a reinforcing portion provided so as to span over the pair of side wall portions above the door member in the closed state. The container according to means 4, wherein the reinforcing portion includes a retaining portion that prevents the engagement state between the slide engaging portion and the slide engaged portion from being released.

[0017] According to means 5, the reinforcing portion can reinforce the upper edge portion of the side surface opening. That is, the displacement and deformation of the upper side portions of the pair of side wall portions can be suppressed, and the shape stability of the side surface opening can be achieved. As a result, the mounting state of the door member and the stability of the opening and closing operation of the door member can be achieved. Further, the retaining portion can surely prevent the slide engaging portion of the door member from dropping off from the slide engaged portion.

[0018] Means 6. The container according to any one of means 1 to 5, wherein the container includes retaining means for holding the door member in the closed state.

[0019] According to means 6, it is possible to prevent a situation where the door member in the closed state unintentionally changes to the open state.

[0020] In addition, corresponding to the above means 5, it may be "the retaining means includes a first retaining portion provided within the formation range of the operation portion or in the vicinity of the operation portion in the lateral width direction of the slide door member, and a second retaining portion provided on the reinforcing portion". In this case, in the operation flow of the operation portion for opening and closing the door member, the retaining means can relatively easily and smoothly hold the door member in the closed state or release the holding state.

[0021] Means 7. The door member is configured such that the slide door member can be displaced in the vertical direction by sliding, and when the slide door member is displaced downward, it is in the open state. The slide door member is configured to be rotatably displaced between a first posture extending in the vertical direction and a second posture in which the lower side connected to the intermediate door member protrudes outward from the container in the open state of the door member. The door member in the open state can be changed to a first open state in which the slide door member is in the first posture and the folded swing door member and the intermediate door member protrude outward from the container in a direction intersecting the extending direction of the door member in the closed state, and a second open state in which the slide door member is in the second posture and the folded swing door member and the intermediate door member extend downward from the slide door member. The container according to any one of Means 1 to 5, characterized in that it is configured to be changed to this state.

[0022] According to Means 7, by setting the door member to the second open state, articles can be inserted and removed through the side opening without being more obstructive to the door member. Further, by setting the slide door member to the second posture, the opening area of the side opening when the door member is in the open state can be made wider.

Brief Description of the Drawings

[0023] [Figure 1] It is a perspective view of a container in which the door member is in the closed state. [Figure 2] It is a partially enlarged perspective view of a container in which the door member is in the closed state. [Figure 3] It is a perspective view of a container in which the door member is in the open state. [Figure 4] It is a front view of a container in which the door member is in the closed state. [Figure 5] It is a side view of a container in which the door member is in the closed state. [Figure 6] It is a front view of a container in which the door member is in the open state. [Figure 7] It is a side view of a container in which the door member is in the open state. [Figure 8]This is a cross-sectional view of a container with the door closed (cross-sectional view along line AA in Figure 4). [Figure 9] This is a partially enlarged cross-sectional view of a container with the door member in the closed position. [Figure 10] This is a cross-sectional view of a container with the door open. [Figure 11] This is a partially enlarged plan view of a container with the door closed. [Figure 12] This is a partially enlarged cross-sectional view of a container with the door member in the closed position (cross-sectional view along line BB in Figure 11). [Figure 13] This is a perspective view of a container in another embodiment where the door member is in the closed position. [Figure 14] This is a magnified perspective view of a container with the door closed. [Figure 15] This is a perspective view of a container with its door open. [Figure 16] This is a magnified perspective view of a container with its door open. [Figure 17] This is a partially enlarged cross-sectional view of a container with the door member in the closed position. [Figure 18] This is a partially enlarged cross-sectional view of a container with the door member in the open position. [Figure 19] This is a perspective view of a container in another embodiment where the door member is in the second open state. [Figure 20] This is a perspective view of a container with the door closed. [Figure 21] This is a partially enlarged side view of a container with the door member in the second open position. [Figure 22] This is a partially enlarged cross-sectional view of a container with the door member in the second open position. [Modes for carrying out the invention]

[0024] An embodiment will be described below with reference to the drawings. As shown in Figures 1 and 3, the container 1 has a bottom wall component 2 comprising a bottom wall portion 3 which is substantially rectangular in plan view, short-side base portions 4 which project upward from each short side of the bottom wall portion 3, and long-side base portions 5 which project upward from one of the long sides of the bottom wall portion 3. The container 1 also has short-side side wall portions 6 which are attached to each short-side base portion 4 so as to extend vertically, and long-side side wall portion 7 which is attached to one of the long-side base portions 5 so as to extend vertically. The upper sides of the short-side base portions 4 and the long-side base portions 5 are at the same height, and the short-side base portions 4 and the long-side base portions 5 are formed continuously with respect to each other. Furthermore, the upper edges of the pair of short-side sidewalls 6 and the long-side sidewalls 7 are at the same height, and the pair of short-side sidewalls 6 are attached to the short-side base 4, and the long-side sidewalls 7 are attached to the long-side base 5, so that the pair of short-side sidewalls 6 and the long-side sidewalls 7 are engaged with each other. In this embodiment, the short-side base 4 and the short-side sidewalls 6 attached above it, and the long-side base 5 and the long-side sidewalls 7 attached above it, respectively, constitute the "sidewalls" that make up the sides of the container 1.

[0025] Furthermore, as shown in Figure 3, one of the sides of the container 1, the longer side, does not have a long-side base portion 5 and a long-side side wall portion 7, thus providing a side opening 8 that penetrates the container 1 in the inward and outward directions. In other words, both side edges of the side opening 8 are defined by the inner surface of the short-side base portion 4 and the inner surface of the short-side side wall portion 6 which is continuous above it, respectively. Moreover, the container 1 is equipped with a door member 9 that can change between an open state (see Figures 3 and 6) that opens the side opening 8 and a closed state (see Figures 1 and 4) that closes the side opening 8. The door member 9 includes a rotating door member 11 that is rotatably connected to the main body of the container 1 so as to be rotatable relative to the main body of the container 1, with its central axis extending along the lower edge of the side opening 8; a sliding door member 12 that is slidably connected to the main body of the container 1 along the left and right side edges of the side opening 8; and an intermediate door member 13 that is rotatably connected to the rotating door member 11 and also rotatably connected to the sliding door member 12. In this example, the main body of the container 1 is composed of a bottom wall component 2, a short-side side wall component 6, and a long-side side wall component 7, and the rotating door member 11 is connected to the bottom wall component 2.

[0026] As shown in Figures 1 and 8, the bottom wall component 2 includes a door base 15 that protrudes upward from the long side of the bottom wall component 3 where the long side base 5 is not provided, and the upper side of the door base 15 is located below the upper side of the short side base 4. The door base 15 is provided over the entire length of the bottom wall component 2 (from one end to the other in the length of the bottom wall component 2), and in the short side of the bottom wall component 2, both ends of the door base 15 are connected to each of the short side base 4. The door base 15 is also provided with a base-side connecting portion 16 for connecting the rotating door member 11 so that it can rotate and displace. In this embodiment, the projection length of the door base portion 15 from the bottom wall portion 3 is shorter than the thickness of the door member 9 (rotating door member 11) (see Figure 10), and the base-side connecting portion 16 is also provided in the vicinity of the bottom wall portion 3. The lower edge of the side opening 8 is formed by the upper edge of the door base portion 15.

[0027] As shown in Figures 3, 7, etc., each short-side side wall portion 6 comprises a side wall base portion 21 that constitutes the inner surface of the short-side side wall portion 6, a side wall upper flange portion 22 that protrudes outward from the upper side of the side wall base portion 21 to the outside of the container 1, an upper reinforcement portion 23 provided above the side wall upper flange portion 22, a side wall lower flange portion 24 that protrudes outward from the lower side of the side wall base portion 21 to the outside of the container 1, a side wall side engaging portion (not shown) that protrudes downward from the side wall lower flange portion 24 and is connected to the short-side base portion 4, and a plurality of side wall vertical ribs 26 that extend to connect the side wall upper flange portion 22 and the side wall lower flange portion 24. The upper reinforcement portion 23 includes an outer rib that protrudes upward from the outer edge of the upper flange portion 22 of the side wall, an upper rib that protrudes inward from the upper edge of the outer rib and faces the upper surface of the upper flange portion 22 of the side wall, and a reinforcing rib that connects the upper flange portion 22 of the side wall and the upper rib.

[0028] Furthermore, a handle portion 27 is provided that protrudes downward from the outer edge of the upper flange portion 22 of the side wall, including the central part in its extending direction, making it possible to carry the container 1 by placing fingertips on the back of the handle portion 27. Also, as shown in Figure 2, among the multiple side wall vertical ribs 26, the side wall vertical rib 26 that protrudes outward from the side edge of the side opening 8 side of the side wall base portion 21 (hereinafter also referred to as the "slide-engaged portion 28") has a shorter protrusion length from the side wall base portion 21 than the other side wall vertical ribs 26. Moreover, the groove portion 29 formed between the slide-engaged portion 28 and the side wall vertical rib 26 that is positioned relatively close to and opposite the slide-engaged portion 28 extends to the upper end of the short-side side wall portion 6 and opens upward. In this embodiment, the outer surface of the short-side wall portion 6 is formed by the outer edges of the side wall vertical ribs 26, the outer edges of the side wall lower flange portion 24, and the outer surface of the upper reinforcement portion 23. Similarly, the long-side wall portion 7 is also provided with a side wall base portion, a side wall upper flange portion, an upper reinforcement portion, a side wall lower flange portion, a side wall engagement portion, multiple side wall vertical ribs, and a handle portion (the sliding engagement portion 28, which is part of the peripheral portion of the side opening 8, is not provided).

[0029] As shown in Figures 3, 7, etc., each short-side base portion 4 comprises a base base portion 31 that constitutes the inner surface of the short-side base portion 4, an upper base flange portion 32 that protrudes outward from the upper side of the base base portion 31 and supports the lower side flange portion 24 of the short-side side wall portion 6, a lower base flange portion 33 that protrudes outward from the lower side of the base base portion 31 and supports the lower side flange portion 24 of the short-side side wall portion 6, a lower base flange portion 33 that protrudes outward from the lower side of the base base portion 31, a base-side engaging portion (not shown) that opens upward and into which the side wall-side engaging portion is inserted and connected, and a plurality of base longitudinal ribs 34 that extend to connect the upper base flange portion 32 and the lower base flange portion 33. In this embodiment, the outer surface of the short-side base portion 4 is formed by the outer edges of the upper base flange portion 32, the lower base flange portion 33, and the vertical base ribs 34, and the outer surface of the short-side base portion 4 is substantially flush with the outer surface of the short-side side wall portion 6.

[0030] As described above, the door base portion 15 is provided over the entire longitudinal width of the bottom wall component 2, and as shown in Figures 3 and 4, the width of the door member 9 is configured to be approximately the same as the distance between the outer surfaces of the pair of short-side wall portions 6 (between the outer surfaces of the pair of short-side base portions 4). As a result, as shown in Figures 5 and 12, the inner surface of the door member 9 in the closed state is configured to be in approximate contact with the short-side wall portions 6 and the sides (slide-engaged portions 28) of the short-side base portions 4.

[0031] As shown in Figures 1, 8, and 10, the rotating door member 11 comprises a rotating door body 41 which is substantially rectangular in front view, and a door-side connecting part 42 which protrudes downward from the lower edge of the rotating door body 41 and is connected to a base-side connecting part 16. It is configured to be rotatable between a closed position in which it is erected above the door base part 15 and an open position in which it rotates 90 degrees or more outward from the closed position toward the outside of the container 1 and protrudes toward the outside of the container 1. The door-side connecting part 42 is configured separately from the rotating door body 41 and is configured to be rotatable relative to the rotating door body 41. In addition, a rotating door-side first bending connecting part 43 is provided on the upper edge of the rotating door body 41 for rotatably connecting the intermediate door member 13.

[0032] Furthermore, as shown in Figures 1 and 4, the rotating door member 11 has locking members 44 attached to it near both ends of the upper edge of the rotating door body 41, which are slidable in the left and right directions. The locking members 44 are configured to be operable from the outer surface of the rotating door member 11. In contrast, as shown in Figures 3 and 7, each short-side wall portion 6 is provided with a locking hole 45 that penetrates the side wall base portion 21 (at a position corresponding to the bottom surface of the groove portion 29). When the locking member 44 is inserted into the locking hole 45, the rotational displacement of the rotating door member 11 in the closed position, and consequently the displacement of the door member 9 in the closed position toward the open position, is restricted. In this embodiment, the locking member 44 and the locking hole 45 constitute the holding means.

[0033] As shown in Figures 1, 2, and 11, the sliding door member 12 comprises a sliding door body 51 which is roughly rectangular in front view, and sliding engagement parts 52 provided on both sides of the sliding door body 51 that engage with the sliding engagement parts 28 of the short-side side walls 6. The sliding engagement part 52 comprises a base part 53 that protrudes inward into the container 1 from a position slightly below the upper edge of the sliding door body 51 and above the lower edge of the sliding door body 51, and a roughly cylindrical locking part 54 that protrudes from the tip of the base part 53 toward the center of the sliding door body 51 in the lateral direction. Furthermore, as shown in Figures 1, 8, and 10, the lower edge of the sliding door body 51 is provided with a sliding door side second bending connecting part 55 for rotatably connecting the intermediate door member 13. In addition, the sliding door member 12 is equipped with an operating part 56 that can be operated in both the open and closed states of the door member 9. In this embodiment, the operating section 56 protrudes downward from a position that includes the center in the lateral direction of the sliding door body 51, which has a roughly U-shaped vertical cross-section and opens to the outside of the container 1. The operating section 56 is configured to be usable as a handle on the door member 9, so that when an operator carries the container, they can lift the container 1 by placing their fingertips on the operating section 56 of the door member 9 together with the handle 27 (not shown) on the long side wall 7.

[0034] When attaching the sliding door member 12 to the main body of the container 1 (a pair of short-side wall portions 6) (connecting them so that they can slide and displace vertically), the locking portion 54 of each sliding engagement portion 52 is inserted from above into the groove portion 29 of each short-side wall portion 6. As a result, as shown in Figures 2 and 11, each sliding engagement portion 52 engages with the sliding engagement portion 28 of each short-side wall portion 6 from the outside of the container 1. Furthermore, as shown in Figure 12, in this embodiment, whether the door member 9 is in the closed state, the door member 9 is in the open state, or the state in which the door member 9 is changing between the closed and open states, the inner surface of the sliding door body 51, more specifically, both the portion of the sliding door body 51 located above the sliding engagement portion 52 and the portion located below the sliding engagement portion 52 in the vertical direction, are in substantially contact with the sliding engagement portion 28. Thus, with the slide engaging portion 52 and the slide door body 51 positioned with the slide engaging portion 28 in between, the rotational displacement of the slide door member 12 (relative to the main body side of the container 1) is restricted in any of the following states: the closed state of the door member 9, the open state of the door member 9, and the state in which the door member 9 is changing between the closed and open states. In this embodiment, the configuration that restricts the rotational displacement of the slide door member 12 by the slide engaging portion 28, the slide engaging portion 52, and the slide door body 51 corresponds to the rotation restricting means. As shown in Figure 11, a part of the slide door body 51 is positioned between a pair of short-side wall portions 6, and a part of both sides of the slide door body 51 (inner surface facing portion) is positioned to face, abut, or be in close proximity to the inner surface of the short-side wall portion 6. As a result, a portion of the sliding door body 51 is positioned on the opposite side of the sliding engagement portion 52 (locking portion 54) with the short-side side wall portion 6 (side wall base portion 21) in between, creating a structure that makes it difficult for the sliding engagement portion 52 to disengage from the sliding engagement portion 28.

[0035] As shown in Figures 1, 8, and 10, the intermediate door member 13 comprises an intermediate door body 61 which is roughly rectangular in front view, an intermediate door side first bending connecting portion 62 provided on the lower edge of the intermediate door body 61 and connected to the rotating door side first bending connecting portion 43 of the rotating door member 11, and an intermediate door side second bending connecting portion 63 provided on the upper edge of the intermediate door body 61 and connected to the sliding door side second bending connecting portion 55 of the sliding door member 12.

[0036] When the door member 9 is configured as described above, in the closed state, as shown in Figures 1, 5, and 8, the rotating door member 11 is in a closed position extending upward from the door base 15, the intermediate door member 13 is in a position extending upward from the upper edge of the rotating door member 11, and the sliding door member 12 is in a position extending upward from the upper edge of the intermediate door member 13. When the door member 9 is in the open state, as shown in Figures 3, 7, and 10, the rotating door member 11 is in an open position extending outward from the door base 15 towards the outside of the container 1, the intermediate door member 13 is in a position where the inner surface of the intermediate door member 13 is facing and overlapping with the inner surface of the rotating door member 11, and the sliding door member 12 is in a position extending upward from the upper edge of the intermediate door member 13.

[0037] In this embodiment, the door member 9 can be opened and closed simply by operating the operating part 56 of the sliding door member 12. More specifically, as shown in Figure 9, the first bending connecting part 43 on the rotating door side is provided projecting upward from the portion of the upper side of the rotating door member 11 (a rotating door body 41 with a roughly U-shaped vertical cross-section that opens to the outside of the container 1) that is on the inside of the container 1. The first bending connecting part 43 on the rotating door side is provided with an axial hole 43a, and a part of the axial hole 43a is configured to be located on the inside of the container 1, rather than on the inner surface of the rotating door member 11. The first bending connecting part 62 on the intermediate door side is provided projecting downward from the lower side of the intermediate door member 13 (an intermediate door body 61 with a roughly U-shaped vertical cross-section that opens to the outside of the container 1). A cylindrical shaft portion 62a is provided on the portion of the intermediate door side first bending connecting portion 62 that is on the inner side of the container 1, and this shaft portion 62a is pivotally supported in the shaft hole 43a of the rotating door side first bending connecting portion 43. Furthermore, the intermediate door member 13 has a downward projection 64 that protrudes downward from the portion of the lower edge of the intermediate door body 61 that is on the outer side of the container 1. Here, in the closed state of the door member 9, the distance W1 between the downward projection 64 of the intermediate door member 13 and the upper edge of the rotating door body 41 in the vertical direction is configured to be less than or equal to the distance W2 between the portion of the upper end of the rotating door side first bending connecting portion 43 that is on the outer side of the container 1 and the lower edge of the intermediate door body 61, and the distance W3 between the portion of the upper end of the upper end of the rotating door side first bending connecting portion 43 that is on the inner side of the container 1 and the lower edge of the intermediate door body 61 is configured to be longer than the distance W2. Furthermore, the connection structure between the sliding door member 12 and the intermediate door member 13 is the same as the connection structure between the rotating door member 11 and the intermediate door member 13 described above, but the inner and outer surfaces of the door member 9 are reversed. In addition, the sliding door member 12 is also provided with a downward projection 57 that protrudes downward from the part of the lower edge of the sliding door body 51 that is on the inner side of the container 1.

[0038] Here, when the operating part 56 of the sliding door member 12 is held and a downward force is applied, a force is applied to the rotating door member 11 via the intermediate door body 61 (particularly the inner part of the container 1). At this time, first the lower projection 64 of the intermediate door member 13 comes into contact with the outer part of the upper edge of the rotating door body 41 of the container 1, and a downward force is applied to that part. At the same time, or slightly later, the outer part of the upper end of the first bending connecting part 43 on the rotating door side comes into contact with the lower edge of the intermediate door body 61, and a downward force is applied to that part. Subsequently, the inner part of the upper end of the first bending connecting part 43 on the rotating door side comes into contact with the lower edge of the intermediate door body 61, and a downward force is applied to that part. As a result, the rotating door member 11 rotates and displaces so that its upper part is pushed outward from the container 1, and in conjunction with the rotational displacement of the rotating door member 11, the intermediate door member 13 also rotates and displaces so that its lower part protrudes outward from the container 1. By sliding the sliding door member 12 downward, the rotating door member 11 and the intermediate door member 13 are folded so that they overlap, and the door member 9 is opened.

[0039] Furthermore, the upper edge of the rotating door member 11 (rotating door body 41) and the lower surface of the lower projection 64 of the intermediate door member 13 are configured to be slightly inclined downward toward the outside of the container 1 (in this example, the inclination is about 1 degree with respect to the horizontal direction). As a result, when no external force is applied to the door member 9 in the closed state (when only the load supporting the sliding door member 11 and the intermediate door member 13 acts on the rotating door member 11), the upper part of the rotating door member 11 is less likely to be displaced toward the outside of the container 1, and consequently, the closed state of the door member 9 is more easily maintained.

[0040] To close the door member 9, which is in the open position, simply slide the sliding door member 12 upward. This causes the intermediate door member 13 and the rotating door member 11 to rotate in conjunction with the sliding displacement of the sliding door member 12, thereby closing the door member 9. After closing the door member 9, the door member 9 is held in the closed position by inserting the locking member 44 into the locking hole 45 and locking it in place.

[0041] Furthermore, as shown in Figure 3, the container 1 is equipped with a reinforcing member 71 that is attached above the closed door member 9 so as to span across a pair of short-side wall portions 6. As shown in Figures 2, 11, and 12, the reinforcing member 71 is equipped with a retaining portion 72 that prevents the slide engaging portion 52 from being released from its engagement with the slide engaged portion 28, and a fixing portion 73 for attaching the reinforcing member 71 to the short-side wall portions 6. Note that in Figure 11, for convenience, only the external dimensions (installation range) of the reinforcing member 71 are shown by a dashed line.

[0042] A reinforcing member mounting portion 75 is provided on the short-side side wall portion 6 in such a manner that the portion of the upper reinforcing portion 23 that includes the area above the groove portion 29 and is on the side opening 8 side is omitted, and a fixing hole 76 is provided in the reinforcing member mounting portion 75 into which the fixing portion 73 is locked. In addition, the retaining portion 72 of the reinforcing member 71 is located above the groove portion 29 and is the portion that closes the upper end of the groove portion 29. In this embodiment, the bottom wall component 2, the short-side side wall portion 6, the long-side side wall portion 7, the door member 9, and the reinforcing member 71 are made of polypropylene.

[0043] As detailed above, according to this embodiment, the door member 9 comprises a rotating door member 11, a sliding door member 12, and an intermediate door member 13. When the door member 9 is opened, the rotating door member 11 and the intermediate door member 13 are folded so that they overlap. Therefore, compared to a configuration in which the door member 9 is not folded when opened, for example, the space required to allow the rotational displacement and position of the door member 9 when opening the door member 9 can be made relatively small. Consequently, it is relatively easy to secure space for opening the door member 9 (making it relatively easy to remove objects from the rotational trajectory of the door member 9, and allowing the door member 9 to be opened even when the container 1 is installed in a relatively narrow space). Furthermore, the sliding door member 12 can be slid along the side of the container 1 where the side opening 8 is provided to open and close the side opening 8. Moreover, the sliding door member 12 is provided with an operating part 56 that can be operated for either opening or closing the side opening 8. Therefore, the worker can open and close the side opening 8 at a position relatively close to the container 1 (main body) (and facing the front of the door member 9) without having to change their posture significantly. For example, in a configuration where the open door member does not fold, the worker can avoid having to spread their arms wide or bend down to reach the opening end of the widely opened door member, and can reduce the degree to which they have to move out of the door member's opening and closing trajectory. As a result, the workability and convenience when opening and closing the door member 9 can be improved.

[0044] Furthermore, the long side wall portion 7 (outer surface) facing the (closed) door member 9 is provided with a handle portion (not shown) on which the container 1 can be gripped when lifting it, and the operating portion 56 of the door member 9 is configured to be usable as the aforementioned handle portion on the door member 9. This improves the ease of carrying the container 1, and allows the user to carry the container 1 by gripping the handle portion 27 on the long side wall portion 7 without having to change their grip after operating the operating portion 56 to close the door member 9 from the open state.

[0045] Furthermore, the sliding door body 51 located on the opposite side of the sliding engagement portion 52, with the sliding engagement portion 28 in between, has a portion located above the sliding engagement portion 52 and a portion located below the sliding engagement portion 52 in the vertical direction, and both of these portions (and the locking portion 54 of the sliding engagement portion 52) are in substantially contact with the sliding engagement portion 28. As a result, the rotational displacement of the sliding door member 12 is restricted when the door member 9 is changing between the open and closed states, when it is in the closed state, and when it is in the open state. Therefore, the posture of the sliding door member 12 can be maintained when opening and closing the door member 9, improving the workability of sliding the sliding door member 12, and allowing the rotational displacement of the rotating door member 11 and the intermediate door member 13 to be performed as set.

[0046] Furthermore, the sliding door member 12 is configured to slide and displace vertically, and the side opening 8 extends in a direction perpendicular to the closed door member 9, with its left and right side edges defined by the inner surfaces of a pair of short-side wall portions 6 located on both sides of the closed door member 9. This allows the width of the side opening 8 to be maximized. In addition, the sliding door member 12 is connected to the pair of short-side wall portions 6 in a slidable and displaceable manner, and the rotating door member 11 is connected to the base-side connecting portion 16 (near the bottom wall portion 3) of the door base portion 15 of the bottom wall component 2 in a rotatable and displaceable manner. As a result, compared to a configuration in which, for example, a side wall is provided below the side opening 8 and the rotating door member 11 is connected to the side wall so as to be rotatable, the lower edge of the side opening 8 can be positioned as low as possible (even in the bottom wall component 2, the upper edge of the door base 15 is positioned lower than the upper edge of the short-side base 4), and the vertical width of the side opening 8 can be maximized. Therefore, the area of ​​the side opening 8 can be made as large as possible, improving the work efficiency when loading and unloading items through the side opening 8. Furthermore, because the side opening 8 is configured to be relatively large, the door member 9 is also configured to be relatively large, and as described above, the door member 9, when opened, folds relatively compactly, resulting in a more pronounced improvement in workability and convenience when opening and closing the door member 9.

[0047] Furthermore, the slide engagement portions 52 provided on both sides of the sliding door member 12 are engaged from the outside of the container 1 with the slide engagement portions 28 that extend along the side edges of the side opening 8 on the pair of short-side wall portions 6. Therefore, the slide engagement portions 52 of the sliding door member 12 can restrict (together with the reinforcing member 71, etc.) the tilting of the pair of short-side wall portions 6 (which are prone to tilting outward from the container 1 due to the provision of the side opening 8) outward from the container 1.

[0048] Furthermore, the container 1 is equipped with a reinforcing member 71 that is attached above the closed door member 9 so as to span across a pair of short-side wall portions 6. The reinforcing member 71 is equipped with a retaining portion 72 that prevents the slide engaging portion 52 from being released from its engagement with the slide engaged portion 28. As a result, the upper edge of the side opening 8 can be reinforced by the reinforcing member 71. In other words, displacement and deformation of the upper edges of the pair of short-side wall portions 6 can be suppressed, and the shape of the side opening 8 can be stabilized. As a result, the mounting state of the door member 9 and the opening and closing operation of the door member 9 can be stabilized. In addition, even if the container is equipped with a configuration that improves the workability when engaging the slide engaging portion 52 with the slide engaged portion 28 (simply inserting the slide engaging portion 52 into the groove portion 29 that opens upward), the retaining portion 72 can reliably prevent the slide engaging portion 52 of the door member 9 from falling off the slide engaged portion 28.

[0049] In addition, the container 1 is equipped with a locking member 44 and a locking hole 45 that can hold the door member 9 in a closed state. This prevents the door member 9 from unintentionally changing from a closed state to an open state.

[0050] Furthermore, the embodiment is not limited to the description above, and may be implemented as follows, for example. Of course, other applications and modifications not exemplified below are also possible.

[0051] (a) In the above embodiment, a locking member 44 attached to the upper part of the rotating door member 11 and a locking hole 45 constitute a holding means for holding the door member 9 in a closed state. However, in place of or in addition to this configuration, a different configuration or a holding means at a different location may be provided. The configuration of a different holding means will be described below with reference to Figures 13 to 18. For convenience, components other than those characteristic of this embodiment will be described using the same reference numerals as in the above embodiment.

[0052] As shown in Figures 16 and 17, the sliding door member 81 comprises a sliding door base portion 82 that constitutes the inner surface of the door member 9, a sliding door upper flange portion 83 that protrudes outward from the upper edge of the sliding door base portion 82 toward the outside of the container 1, an operating portion 84 that protrudes downward from the outer edge of the sliding door upper flange portion 83, including the central part in the lateral width direction of the sliding door member 81, a connecting support portion 85 that protrudes outward from the outside of the container 1 from an intermediate vertical position on the outer surface of the sliding door base portion 82, and a second bending connecting portion 86 for the sliding door that protrudes downward from the lower surface of the connecting support portion 85. The boundary between the outer surface of the operating portion 84 and the upper surface of the sliding door upper flange portion 83 has an R shape. Note that the sliding door member 81 in this embodiment has a shorter vertical width than the sliding door member 12 in the above embodiment.

[0053] As shown in Figures 17 and 18, a retaining hole 87 (first retaining portion) is provided in the sliding door base portion 82 near the connection point with the sliding door upper flange portion 83. The retaining hole 87 is provided within the formation range (or nearby) of the operating portion 84 in the lateral width direction of the sliding door member 81. Furthermore, above the retaining hole 87, the boundary between the upper surface of the sliding door upper flange portion 83 and the sliding door base portion 82 has a chamfered shape.

[0054] In contrast, the reinforcing member 88 includes a retaining projection 89 (second retaining part) that is inserted into the retaining hole 87 and locked in place when the door member 9 is in the closed position, and a restricting projection 90 that abuts against (or approaches) the outer surface of the operating part 84 when the door member 9 is in the closed position. The lower surface of the retaining projection 89 is inclined upward toward the outside of the container 1.

[0055] To close the door member 9 which is in the open position, the sliding door member 81 is displaced upward by pressing it against the lower surface of the retaining projection 89 and the lower edge of the restricting projection 90. This slightly displaces and deforms the restricting projection 90, positions the sliding door upper flange portion 83 above the retaining projection 89, and inserts the retaining projection 89 into the retaining hole portion 87. To open the door member 9 which is in the closed position, the operating portion 84 is pulled slightly forward (or, in addition to, pushing the reinforcing member 88 inward into the container 1). This slightly displaces and deforms the restricting projection 90, causes the retaining projection 89 to disengage from the retaining hole portion 87, and then the sliding door member 81 is displaced downward from that position.

[0056] Furthermore, as shown in Figure 14, a second bending connecting portion 92 on the intermediate door side is provided so as to protrude outward from the upper edge of the intermediate door member 91. In addition, in the lateral direction of the sliding door member 81, the connecting support portion 85 is not provided in the area where the operating portion 84 is formed, and with respect to the intermediate door member 91, the upper edge and the second bending connecting portion 92 on the intermediate door side are omitted in the area where the connecting support portion 85 is not provided. In this way, by omitting the connecting support portion 85 and the upper edge of the intermediate door member 91, a finger insertion area 93 is provided below the operating portion 84, allowing the insertion of a fingertip below the operating portion 84.

[0057] Even when adopting the above configuration, it is possible to prevent situations in which the door member 9, which is in the closed state, unintentionally changes to the open state. Furthermore, in this embodiment, by simply sliding the sliding door member 81 upward from the open state of the door member 9, the door member 9 can be closed, and the door member 9 can be held in the closed state by the retaining hole 87, the retaining projection 89, and the regulating projection 90. Therefore, it is possible to improve the workability when closing the door member 9. In addition, the retaining hole 87 is provided within the formation range of the operating part 84 in the lateral width direction of the sliding door member 81. In this case, in the flow of operation of the operating part 84 for opening and closing the door member 9 (by predetermined operations on the operating part 84), the door member 9 can be held in the closed state by the retaining means (retaining projection 89 and retaining hole 87) or released from the held state relatively easily and smoothly. Moreover, by also using the locking member 44 described in the above embodiment, the container 1 can be used with peace of mind even in situations where it is desired to more reliably maintain the closed state of the door member 9.

[0058] (b) In the above embodiment, the rotating door member 11 and the intermediate door member 13 of the door member 9 in the open state are configured to rotate approximately 90 degrees outward from the position when the door member 9 is in the closed state, but it is also possible to configure them to rotate further. Hereinafter, another embodiment of the door member 101 will be described with reference to Figures 19 to 22. For convenience, in this embodiment, components other than those characteristic of the above embodiment will be described using the same reference numerals.

[0059] The sliding door member 102 in this embodiment has a shorter vertical width than the sliding door member 12 in the above embodiment. The upper end of the sliding engagement portion 103 of the sliding door member 102 is provided at the same position as the upper edge of the sliding door member 102.

[0060] Furthermore, as shown in Figure 21, the short-side base portion 104 is also provided with a slide-engaged portion 105 and a groove portion 106, which extend continuously with the slide-engaged portion 28 and groove portion 29 of the short-side side wall portion 6. In addition, the lower part of the slide-engaged portion 105 of the short-side base portion 104 is provided with an inclined portion 108 that slopes downward toward the outer circumference of the bottom wall component 107, and a protruding portion 109 that extends downward from the lower end of the inclined portion 108. As a result, the lower end of the groove portion 106 of the short-side base portion 104 becomes a rotation-allowing portion 110 that is wider toward the outer circumference of the bottom wall component 107.

[0061] Therefore, by displacing the sliding door member 102 downward, when the sliding engagement portion 103 reaches a position corresponding to the inclined portion 108 and the protruding portion 109 of the sliding engaged portion 105, it becomes possible to rotate and displace the sliding door member 102 by moving the sliding engagement portion 103 to the rotation-allowing portion 110. In this embodiment, the sliding door member 102 is configured to be rotatably displaceable between a first position in which it extends in the vertical direction when the door member 101 is open, and a second position in which the lower side connected to the intermediate door member 111 protrudes outward from the container 1.

[0062] The door member 101 in the open state is configured to change between a first open state, in which the sliding door member 102 is in a first position and the folded rotating door member 112 and intermediate door member 111 protrude outward from the container 1 and extend in a direction intersecting the extending direction of the door member 101 in the closed state, and a second open state, in which the sliding door member 102 is in a second position and the folded rotating door member 112 and intermediate door member 111 extend downward from the sliding door member 102. When the door member 101 is in the second open state, the intermediate door member 111 is positioned to hang almost vertically from the sliding door member 102, while the rotating door member 112 is positioned to be slightly inclined downward toward the outward side of the container 1. As a result, for example, compared to the case where the rotating door member 112 is in a position that hangs down substantially from the base-side connecting portion 16 when the door member 101 is in the second open position, it becomes easier to displace the door member 101 in the second open position toward the first open position (the initial movement becomes relatively smoother), and the workability when changing the door member 101 from the second open position to the first open position is improved.

[0063] Furthermore, as shown in Figure 22, the cross-sectional shape of the intermediate door member 111 is U-shaped, opening outwards from the container 1. The lower surface (back surface) of the upper edge of the intermediate door member 111 is provided with a finger rest 113, which allows the operator to easily displace the sliding door member 102 to the first position by placing their fingers on the operating part 56 with one hand and their fingers on the sliding door member 102 with the other hand when changing the door member 101 from the second open position to the first open position.

[0064] As described above, by setting the door member 101 to the second open state, items can be inserted into and removed from the side opening 8 without the door member 101 becoming a greater obstruction. Furthermore, by setting the sliding door member 102 to the second position, the opening area of ​​the side opening 8 can be made wider when the door member 101 is in the open state. Even when the door member 101 is in the second open state, the sliding door member 12 can be displaced by operating the operating unit 84, which has the same configuration as in (a) above.

[0065] (c) In the above embodiment, a side opening 8 is provided corresponding to one long side of the container 1. However, instead of this configuration, or in addition, a side opening 8 may be provided on the short side of the container 1, or on the other long side. Furthermore, in the above embodiment, the side edge of the side opening 8 is defined by the inner surfaces of a pair of short side wall portions 6, and the rotating door member 11 is rotatably connected to the door base portion 15 of the bottom wall component 2. However, a long side wall portion 7 may also be provided on the side of the container 1 where the side opening 8 is provided, and the side edge of the side opening 8 may be formed on the long side wall portion 7, or the rotating door member 11 may be rotatably connected to the long side wall portion 7. In addition, in the above embodiment, the short-side base portion 4 may be provided over the entire short-side width direction of the container 1 (bottom wall component 2) (from one end to the other in the short-side width direction of the bottom wall component 2), and the door-side connecting portion 42 may be provided so as to protrude laterally from the side surface of the rotating door member 11, so that the rotating door member 11 is rotatably connected to the pair of short-side base portions 4.

[0066] In addition, in the above embodiment, the rotating door member 11 is rotatably connected to the lower edge of the side opening 8 (so that its central axis extends along the lower edge of the side opening 8). However, for example, the rotating door member 11 may be rotatably connected to the upper edge of the side opening 8, and when opening the door member 9 from a closed state, the sliding door member 12 located below the door member 9 may be slid upward (means for holding the door member 9 in the open state may also be provided). Furthermore, for example, the rotating door member 11 may be rotatably connected to one side edge of the side opening 8, and when opening the door member 9 from a closed state, the sliding door member 12 located on the other side edge of the side opening 8 may be slid toward the one side edge of the side opening 8. Moreover, in the above embodiment, the door member 9 in the open state is configured to protrude outward from the container 1, but it may also be configured to protrude inward from the container 1.

[0067] (d) In the above embodiment, the shape of the operating section 56 is not particularly limited. For example, when opening the door member 9 from the closed state, the operating section 56 may be shaped in such a way that an operator can push the sliding door member 12 toward the side where the door member 9 is opened and apply force (even without changing the shape of the operating section 56, in the above embodiment, a notch can be formed in the part of the reinforcing member 71 located above the operating section 56 to push down and displace the sliding door member 12 (the part above the operating section 56) of the door member 9 in the closed state, and it is also possible to place a finger on the lower side of the operating section 56 to prevent it from falling suddenly). In addition, if the container 1 is large, the operating section 56 may be provided in pairs on the left and right sides relative to the sliding door member 12. In the above embodiment, the door member 9 is configured to open simply by pulling the operating part 56 downwards when it is in the closed state. However, it may also be configured to require, for example, pulling the upper part of the rotating door member 11 or the lower part of the intermediate door member 13 outwards from the container 1.

[0068] Furthermore, although the slide engagement portion 52 is configured in a cylindrical shape in the above embodiment, it may be configured to be, for example, a rectangular plate shape, and the rotational displacement of the sliding door member 12 may be restricted by the relationship between the slide engagement portion 52 and the slide engaged portion 28 (groove portion 29). In addition, instead of providing one slide engagement portion 52 on each side of the sliding door member 12, a pair may be provided on the top and bottom to restrict the rotational displacement of the sliding door member 12. Moreover, the shape of the slide engagement portion 52 is not particularly limited and can be appropriately changed according to the shape of the slide engaged portion 28 side (for example, by making it T-shaped). Also, in the above embodiment, the groove portion 29 into which the locking portion 54 of the slide engagement portion 52 is inserted opens upward for the attachment and detachment of the locking portion 54, but instead of this configuration, it may be configured to open to the side of the short side wall portion 6, and the opening may be covered by the retaining portion of the reinforcing member 71. Furthermore, in the above embodiment, the reinforcing member 71 is configured separately from the main body of the container 1, but it may also be configured to be integrally provided with the main body of the container 1 (as a reinforcing part). If this configuration is adopted, the retaining part that prevents the slide engaging part 52 from being released from its engagement with the slide engaged part 28 will also be integrally provided with the main body of the container 1. For example, the retaining part may be configured as an elastic piece or the like to restrict the slide engaging part 52 from falling out (coming out of the groove 29) when it is engaged with the slide engaged part 28, while the retaining part may deform and displace in accordance with the movement when the slide door member 12 is attached to the main body of the container 1, thereby allowing the slide engaging part 52 to be engaged with the slide engaging part 52 (inserted into the groove 29) relatively smoothly. Furthermore, the reinforcing member 71 may be omitted, or the portion of the reinforcing member 71 in the above embodiment that is located between the inner surfaces of the pair of short-side wall portions 6 may be omitted (a configuration in which a pair of reinforcing members, each having a retaining portion, are attached to each short-side wall portion 6), thereby making it easier to put items in and take them out of the container 1.

[0069] (e) In the above embodiment, the container 1 is made of polypropylene, but it may be made of polyethylene, PET, polyamide, or other resin materials. Also, although not specifically mentioned in the above embodiment, the side walls 6 and 7 may be detachably attached to the bottom wall component 2. Furthermore, the container may be made into a container in which predetermined side walls 6 and 7 are rotatably connected to the base components 4 and 5, or into a container in which the bottom wall component 2 and the side walls 6 and 7 are integrated. In addition, the bottom wall 3 of the bottom wall component 2 may be made into a pallet shape with a fork insertion part formed therein that allows for the insertion of a fork. [Explanation of Symbols]

[0070] 1...Container, 3...Bottom wall, 4...Short side base, 5...Long side base, 6...Short side wall, 7...Long side wall, 8...Side opening, 9...Door member, 11...Rotating door member, 12...Sliding door member, 13...Intermediate door member, 15...Door base, 28...Sliding engagement part, 29...Groove, 44...Locking member, 45...Locking locking hole, 52...Sliding engagement part, 56...Operating part, 71...Reinforcement member, 72...Retaining part, 81...Sliding door member, 87...Holding hole, 88...Reinforcement member, 89...Holding projection, 90...Restricting projection.

Claims

1. The bottom wall section is roughly rectangular in plan view, A container comprising side walls extending upward from each side of the bottom wall, At least one of the sides of the container formed by the side wall portion is provided with a side opening that penetrates in the inward and outward direction of the container. The container is equipped with a door member that can change between an open state, which opens the side opening, and a closed state, which closes the side opening. The aforementioned door member is A rotating door member is connected to the main body of the container so as to be rotatable and displaceable with respect to the container body, such that its central axis extends along a predetermined edge of the side opening. A sliding door member is connected to the main body of the container so as to be slidable relative to the main body of the container, along an edge of the side opening that extends in a direction perpendicular to the predetermined edge, The system includes an intermediate door member that is rotatably connected to the aforementioned rotating door member and rotatably connected to the aforementioned sliding door member, The door member is configured such that, when opened, it folds so that the rotating door member and the intermediate door member overlap. The intermediate door member and the rotating door member rotate in conjunction with the sliding displacement of the sliding door member, so that the door member can change between the open state and the closed state. The container is characterized in that the sliding door member is provided with an operating part that can be operated in both the open state and the closed state of the door member.

2. The container according to claim 1, wherein the container is provided with a rotation restricting means for restricting the rotational displacement of the sliding door member when the door member is changing state between the open state and the closed state, and when it is in the closed state.

3. The aforementioned sliding door member is configured to be slidable in the vertical direction. The side opening extends in a direction perpendicular to the closed door member, and its left and right side edges are defined by the inner surfaces of a pair of side walls located on both sides of the closed door member. The container according to claim 1, characterized in that the sliding door member is connected to the pair of side walls so as to be slidable and displaceable, and the rotating door member is connected to the bottom wall or a portion near thereto so as to be rotatable and displaceable.

4. The sliding door member is provided with sliding engagement portions on both sides of the sliding door member, The pair of side wall portions extend along the side edge of the side opening and are provided with a slide-engaged portion that is engaged with the slide-engaging portion. The container according to claim 3, characterized in that each of the slide engaging portions is engaged with each of the slide engaged portions from the outside of the container.

5. The container is provided with a reinforcing portion that is stretched across the pair of side walls above the closed door member, The container according to claim 4, characterized in that the reinforcing portion includes a retaining portion that prevents the slide engaging portion from being released from its engagement with the slide engaged portion.

6. The container according to any one of claims 1 to 5, characterized in that the container is provided with a holding means for holding the door member in the closed state.

7. The door member is configured such that the sliding door member can slide and displace vertically, and the door is opened when the sliding door member is displaced downward. The sliding door member is configured to be rotatably displaceable between a first position in which it extends vertically when the door member is open, and a second position in which the lower part connected to the intermediate door member protrudes outward from the container. The container according to any one of claims 1 to 5, characterized in that the door member in the open state is configured to change between a first open state in which the sliding door member is in the first position and the folded rotating door member and the intermediate door member protrude outward from the container and extend in a direction intersecting the extending direction of the door member in the closed state, and a second open state in which the sliding door member is in the second position and the folded rotating door member and the intermediate door member extend downward from the sliding door member.

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