JP5711053B2 - Box container - Google Patents

Description

  The present invention relates to a box-type container used for transportation of articles.

  In general, a box-type container used for transporting an article has a substantially rectangular plate-like bottom wall part and a side wall part extending upward from a side part of the bottom wall part. It is configured to take in and out. In addition, an opening is formed in the side wall, and a door member that can open and close the opening is provided detachably. By opening the opening, articles can be taken in and out from the side of the box-shaped container. Some are configured to be able to do this (for example, see Patent Document 1).

JP-A-7-257571

  However, the box-type container of Patent Document 1 is concerned that the door member may be lost while being used with the door member removed and the opening opened. In addition, there is a possibility that it is necessary to secure a storage place for door members that are not used, and workability may be reduced when the door members are attached and removed relatively frequently.

  The present invention has been made to solve the above problems, and an object of the present invention is to provide a box-type container that can improve convenience in a configuration including a detachable door member. .

  In the following, each means suitable for solving the above-mentioned purpose will be described in terms of items. In addition, the effect etc. peculiar to the means to respond | correspond as needed are added.

Means 1. A bottom wall portion having a substantially plate shape, and a peripheral wall portion extending upward along the outer peripheral edge of the bottom wall portion,
The peripheral wall portion is
An opening wall portion in which a side opening that allows an article housed inside to be taken out from the side is formed and a door member that can open and close the side opening is detachably provided;
A mounting wall that can be mounted on the outer surface of the door member removed from the opening wall ;
The door member includes a lock member having an engagement piece slidable along an inner surface or an outer surface of the door member,
The opening wall portion includes an opening-side engaged portion that engages with the engagement piece of the lock member in a state where the side opening is closed by the door member,
The mounting wall portion includes a mounting-side engaged portion that engages with the engaging piece of the lock member, and the door member is formed by the engagement of the engaging piece and the mounting-side engaged portion. box-type container but characterized by Rukoto fixed to the mounting wall portion.

  According to the means 1, there is provided a mounting wall portion to which the door member detached from the opening wall portion can be mounted so as to open the side opening portion. For this reason, it is possible to avoid a situation in which the door member is lost while the box-type container is used with the side opening being opened. Further, since the door member is always together with the box-type container, it is not necessary to separately secure a storage place for the door member that is not used, and workability when the door member is frequently attached or removed can be improved. it can. Therefore, the convenience (usability) of a box-type container provided with a detachable door member can be improved.

  In addition, the door member can be mounted on the outer surface side of the mounting wall. For this reason, it is possible to avoid a situation in which the accommodation space inside the box-shaped container, the opening above the box-shaped container, or the side opening is narrowed by the door member mounted on the mounting wall. In addition, it is possible to improve workability when the door member is attached to and detached from the mounting wall.

Further , according to the means 1 , the door member can be fixed to the mounting wall portion by using the lock member for fixing the door member to the opening wall portion. For this reason, in the door member, compared with the case where the lock member for the mounting wall portion is provided separately from the lock member for the opening wall portion, it is possible to simplify the configuration, improve the workability, reduce the weight, and the like. it can. Furthermore, since the lock member is configured to slide the engagement piece along the inner surface or the outer surface of the door member, the opening side engaged portion that engages with the engagement piece in the opening wall portion and the mounting wall portion. In addition, the mounting-side engaged portion can be formed relatively easily, and the engaged state can be stabilized.

Means 2 . The engagement piece includes an engagement position that can be engaged with the opening-side engaged portion or the mounting-side engaged portion, and the opening-side engaged portion or the mounting-side engaged portion. It is configured to be displaceable to a release position where the engagement state can be released,
The door member includes a biasing unit that biases the engagement piece toward the engagement position, and displaces the engagement piece toward the release position against the biasing force of the biasing unit. A release operation unit that is operated by the operator when
The release operation portion includes an operation side finger hook portion provided on the lock member and a main body side finger hook portion provided on the main body side of the door member, and the operation side finger hook portion and the main body side finger portion are provided. It is configured to be able to carry the door member by hanging a finger on the hanging portion, and by pressing the operation side finger hanging portion close to the main body side finger hanging portion, the engagement piece is The box-shaped container according to means 1 , which is displaced toward the release position.

According to the means 2 , it is possible to hold the door member (with one hand) by placing a finger on the operation side finger hanging portion and the main body side finger hanging portion, and the operation side finger hanging portion and the main body side finger hanging portion as they are. By applying (gripping) a force to the release operation unit so as to be close to each other, the engagement piece can be displaced to the release position. Therefore, the workability | operativity at the time of replacing a door member between an opening wall part and a mounting wall part can be improved greatly. In particular, if the release operation part is grasped, the door member can be carried without having the outer peripheral edge of the door member, so that the door member is made to enter the inner peripheral side of the recess formed in the mounting wall part. In the configuration of mounting, the above-described effect of improving the workability of mounting the door member to the mounting wall portion is more reliably achieved. Moreover, since a finger | toe will be hooked not only to a lock member but the main body side of a door member, stability and durability at the time of lifting a door member can be improved.

Means 3. A bottom wall portion having a substantially plate shape, and a peripheral wall portion extending upward along the outer peripheral edge of the bottom wall portion,
The peripheral wall portion is
An opening wall portion in which a side opening that allows an article housed inside to be taken out from the side is formed and a door member that can open and close the side opening is detachably provided;
A mounting wall that can be mounted on the outer surface of the door member removed from the opening wall;
The bottom wall portion has a substantially rectangular plate shape, and the peripheral wall portion includes four side wall portions that are rotatably connected to the side portions of the bottom wall portion,
Each of the side walls is formed between an upright position erected upward along each side part of the bottom wall part and a lying position that is folded over the bottom wall part and parallel to the bottom wall part. It is configured to be able to rotate and displace,
At least one of the side wall portions is configured as the opening wall portion, and at least one of the side wall portions other than the opening wall portion is configured as the mounting wall portion,
Box shape characterized in that all the side wall portions are folded to the upper side of the bottom wall portion in the state where the door member is mounted on either the opening wall portion or the mounting wall portion. container.
Means 4. The bottom wall portion has a substantially rectangular plate shape, and the peripheral wall portion includes four side wall portions that are rotatably connected to the side portions of the bottom wall portion,
Each of the side walls is formed between an upright position erected upward along each side part of the bottom wall part and a lying position that is folded over the bottom wall part and parallel to the bottom wall part. It is configured to be able to rotate and displace,
At least one of the side wall portions is configured as the opening wall portion, and at least one of the side wall portions other than the opening wall portion is configured as the mounting wall portion,
Means 1 is characterized in that, even when the door member is mounted on either the opening wall portion or the mounting wall portion, all the side wall portions are folded to the upper side of the bottom wall portion as the sleeping position. Or the box-shaped container of 2.

According to the means 3 and 4, the box-type container can be folded in a compact manner not only when the door member is mounted on the opening wall portion but also when the door member is mounted on the mounting wall portion. In addition to improving the performance, even when a plurality of box-shaped containers are stacked, they can be ordered. In addition, even when a box-type container is folded and transported / stored, it is not necessary to remove the door member one by one, and the door member is transported / stored separately from the box-type container body, or the door member is lost. In addition, it is possible to improve workability when folding or assembling the box-shaped container.

It is a perspective view of the folding container with which the door member was mounted | worn to the opening wall part. It is a perspective view of the folding container with which the door member was mounted | worn with the closed wall part. It is a perspective view of the folding container with which the door member was mounted | worn with the closed wall part. It is a perspective view of the folding container from which the door member was removed. It is a perspective view which shows the folding container of the state folded. It is a perspective view which shows the folding container of the state folded. It is a perspective view which shows the upper surface side of a bottom wall part. It is a perspective view which shows the lower surface side of a bottom wall part. It is a perspective view which shows the outer surface side of the opening wall part with which the door member was mounted | worn. It is a perspective view which shows the inner surface side of the opening wall part with which the door member was mounted | worn. It is a perspective view which shows the outer surface side of an opening wall part. It is a perspective view which shows the inner surface side of an opening wall part. It is a perspective view which shows the outer surface side of a door member. It is a perspective view which shows the inner surface side of a door member. It is a perspective view which shows the door member from which the locking member was removed. It is a disassembled perspective view of a locking member. It is a perspective view which shows the outer surface side of a closing wall part. It is a perspective view which shows the inner surface side of a closing wall part. It is a perspective view which shows the closing wall part with which the door member was mounted | worn. It is a perspective view including the cross section in the AA of FIG. It is a perspective view which shows the outer surface side of a long side wall part. It is a perspective view which shows the inner surface side of a long side wall part. It is a perspective view which shows the folding container stacked in the folded state. It is a perspective view which shows the folding container stacked in the folded state.

  Hereinafter, an embodiment will be described with reference to the drawings. As shown in FIG. 1 and the like, the folding container 1 has a substantially rectangular plate-like bottom wall portion 2 and a long side that is rotatably provided corresponding to a pair of opposed long side portions of the bottom wall portion 2. The side wall part 3 and the short side wall part 4 provided so as to be rotatable respectively corresponding to a pair of opposing short side parts of the bottom wall part 2 are provided. In this embodiment, the bottom wall part 2, the long side wall part 3, and the short side wall part 4 are made of polypropylene. Moreover, in this embodiment, a box-shaped container is comprised by the folding container 1, and a surrounding wall part is comprised by a pair of long side wall part 3 and a pair of short side wall part 4. FIG.

  As shown in FIGS. 7 and 8, the bottom wall portion 2 includes a long side base portion 6 protruding upward from the bottom wall portion 2 along each long side portion, and a bottom wall along each short side portion. A short-side base portion 7 protruding upward from the portion 2 is provided. In the present embodiment, the long side wall portion 3 and the short side wall portion 4 are rotatably connected to the long side base portion 6 and the short side base portion 7, respectively. , 7 is configured to be rotatable and displaceable between an upright position erected above 7 and a sleeping position that is folded above the bottom wall 2 and extends in parallel with the bottom wall 2. .

  Each long side base portion 6 includes an inner wall portion 11 extending upward from the long side portion of the bottom wall portion 2, an upper wall portion 12 extending outward from the upper edge portion of the inner wall portion 11, and an outer edge of the upper wall portion 12. And an outer wall portion 13 that extends downward from the portion, and has a substantially U-shaped cross section that opens downward. Moreover, the long side base part 6 of this embodiment is provided so that the inner surfaces of a pair of opposing short side base part 7 may be connected.

  Further, each long-side base portion 6 has a long-side bearing portion 15 for rotatably supporting the long-side side wall portion 3. Are provided at three locations. The long side bearing portion 15 is provided with a pair of connecting wall portions 16 that connect the inner wall portion 11 and the outer wall portion 13 so as to face each other in the extending direction of the long side side base portion 6, and a pair of connecting walls In the part between the parts 16, the upper wall part 12 is notched, and the inner wall part 11 is notched so as to leave a connection part with the connecting wall part 16, and the outer wall part 13 side from the upper side part of the remaining inner wall part 11 It is comprised by providing the hook part 17 which protrudes toward.

  Each short side base portion 7 includes an inner wall portion 21 that extends upward from the short side portion of the bottom wall portion 2, an upper wall portion 22 that extends outward from the upper edge portion of the inner wall portion 21, and an outer edge of the upper wall portion 22. And an outer wall portion 23 extending downward from the portion. The short side base portion 7 includes corner protrusions 24 that protrude upward at both ends in the longitudinal direction, and connects the pair of corner protrusions 24 along the outer edge of the upper wall portion 22. Thus, a vertical wall portion 25 is provided. The upper surface of the upper wall portion 22 of the short side base portion 7 of the present embodiment is at the same height as the upper surface of the upper wall portion 12 of the long side base portion 6. Further, the surface on the long side base portion 6 side of the corner protrusion 24 is flush with the inner surface of the inner wall portion 21 of the short side base portion 7.

  In addition, the corner protrusion 24 does not open downward, but opens on the outer peripheral side of the bottom wall 2 in the lateral direction of the bottom wall 2. Further, at both end portions of each short side base portion 7, a shift preventing convex portion 26 that protrudes from the corner protrusion 24 to above the long side base portion 6 is formed. The inner surface of the slip prevention convex portion 26 is flush with the inner surface of the inner wall portion 11 of the long side base portion 6.

  Further, each short side base portion 7 is provided with a short side bearing portion 27 for rotatably supporting the short side wall portion 4. The short-side bearing portion 27 of the present embodiment includes an auxiliary receiving portion 28 that protrudes upward from the upper wall portion 22 in the center in the longitudinal direction of the short-side base portion 7 and the longitudinal length of the short-side base portion 7. The shaft support part 29 provided in the corner protrusion 24 of the direction both ends is provided. The auxiliary receiving portion 28 has a shaft hole 28a that penetrates in the longitudinal direction of the short side base portion 7 and opens upward, and has a substantially C-shaped cross section. Moreover, the axial support part 29 is comprised by forming the axial hole 29a with respect to the wall part which pinches | interposes the auxiliary | assistant receiving part 28 among a pair of corner protrusion parts 24, respectively.

  The bottom wall 2 of the present embodiment includes a bottom plate 2a (see FIG. 7) in which openings that penetrate vertically in a grid pattern are formed, and a peripheral portion of each opening formed in the bottom plate 2a. A grid-like bottom rib 2b (see FIG. 8) is provided. The bottom rib 2b is formed over the entire range on the inner peripheral side of the frame-shaped portion constituted by the base portions 6 and 7. Further, the lower edge portions of the outer wall portions 13 and 23 of the base portions 6 and 7 are substantially at the same height as the lower surface of the bottom plate 2a of the bottom wall portion 2, and are higher than the lower edge portions of the bottom rib 2b. positioned.

  As shown in FIGS. 2, 21, 22, and the like, the long side wall portion 3 includes a substantially rectangular plate-like wall body 31 having substantially the same lateral width as the long side base portion 6, and both side portions of the wall body 31. The insertion protrusion 32 protrudes from the outer surface of the wall main body 31 (the surface facing the outer peripheral side of the bottom wall portion 2 in the standing position and the upper surface in the laying position), and the lower side portion of the wall main body 31 (the lower side in the standing position) And a long-side hinge portion 33 protruding from the outer wall of the bottom wall 2 at the laying position. Further, on the outer surface of the wall main body 31, reinforcing ribs 34 are appropriately formed so as to protrude outwardly at least along the outer peripheral edge of the wall main body 31, whereby the thickness of the long side wall portion 3 is increased to the long side. The side base portion 6 is configured to have almost the same thickness.

  The long side hinge part 33 extends vertically downward from a portion constituting the lower side part of the long side wall part 3 in the standing position among the reinforcing ribs 34 formed along the outer periphery of the wall body 31. And a pair of shaft portions 36 projecting from the both side surfaces of the distal end portion of the connecting portion 35 along the longitudinal direction of the long side wall portion 3, respectively, and having a substantially T-shape as a whole. There is no. The long side hinge portion 33 is provided at three locations corresponding to the long side bearing portion 15 formed on the long side base portion 6.

  Then, the shaft portion 36 of the long side hinge portion 33 is inserted into the long side bearing portion 15, so that the shaft portion 36 is positioned on the lower surface side of the hook portion 17 of the long side bearing portion 15. ) It will be pivotally supported. Thereby, the long side wall portion 3 is connected to the long side base portion 6 so as to be rotatable.

  Furthermore, a locking part 41 configured separately from the long side wall 3 is provided on the outer surface side upper portion of the long side wall 3 in the height direction of the long side wall 3 (long side wall). 3 is slidable in the up and down direction). As shown in FIG. 21, the locking part 41 extends along the horizontal width direction (longitudinal direction) of the long side wall portion 3, and has a part main body 42 having an operation recess 43 at the outer surface side center, and a part main body 42. A pair of left and right leaf springs 44 that urge the parts main body 42 toward the upper side of the long side wall portion 3 by extending obliquely downward from the lower surface of the plate and having the tip side pressed against the reinforcing rib 34. A locking projection 45 that projects laterally from both sides is provided.

  Each locking projection 45 extends to each side edge of the long side wall 3. The long side wall 3 is formed with an insertion recess 37 (see FIG. 22) that exposes the tip of the locking projection 45 to the inner surface of the long side wall 3. Furthermore, both end portions of each locking projection 45 are inclined surfaces in which the upper part of the outer surface is inclined upward toward the inner surface side (see FIG. 21).

  In addition, a handle portion 38 is formed at the upper center of the outer surface side of the wall main body 31 (in this example, below the locking part 41) so that the operator can carry the folding container 1 with his / her hand. Has been. Further, the wall main body 31 is formed with a notch 39 so as to avoid interference with the shift prevention convex portion 26 protruding from the inner surface of the short side base portion 7.

  Now, in this embodiment, as shown in FIG. 2, FIG. 3, etc., side opening which can take out the articles | goods accommodated in the folding container 1 from one side in one of a pair of short side wall part 4 is demonstrated. Part 8 is formed. Hereinafter, the short side wall portion 4 in which the side opening 8 is formed is referred to as an opening wall portion 4a, and the short side wall portion 4 in which the side opening 8 is not formed is referred to as a closing wall portion 4b.

  First, the closing wall 4b will be described with reference to FIGS. 4, 17, 18, and the like. The closed wall portion 4 b includes a substantially plate-like wall body 51 having substantially the same width as the short side base portion 7 (including the corner protrusions 24), and an inner surface (standing upright) on both sides of the wall body 51. The locking wall 52 projects from the inner peripheral side of the bottom wall 2 at the position and faces downward at the laying position, and the bottom side of the wall main body 51 (the lower side when standing, and the bottom at the laying position). And a short-side hinge portion 53 that protrudes from a surface facing the outer peripheral side of the wall portion 2. In addition, reinforcing ribs 54 are appropriately formed on the outer surface of the wall body 51 so as to protrude outwardly at least along the outer peripheral edge of the wall body 51, whereby the thickness of the closed wall portion 4b is reduced to the short side base. The thickness of the part 7 is substantially the same.

  The short side hinge 53 is connected to a pair of rotationally supported shafts 29 provided at both ends (each corner projection 24) of the short side base 7 via a shaft pin (not shown). Part 57 and auxiliary shaft part 58 that is pivotally supported by auxiliary receiving part 28 provided in the longitudinal center of short side base part 7. Each rotation connecting portion 57 has a diameter slightly smaller than the thickness of the closed wall portion 4 b, and a cylindrical body formed with a shaft hole 57 a at the center is formed with a reinforcing rib 54 formed along the lower side portion of the wall body 51. Are arranged in close proximity to each other and have a shape that connects the two. Further, the auxiliary shaft portion 58 is formed by a cylindrical body that connects between a pair of plate-like portions 59a provided so as to face each other in the lateral width direction of the closing wall portion 4b at a position between the pair of rotation connecting portions 57. It is configured.

  Then, the auxiliary shaft portion 58 is inserted into the shaft hole 28 a of the auxiliary receiving portion 28, and the shaft pin is inserted over the shaft hole 57 a of the rotation connecting portion 57 and the shaft hole 29 a of the shaft support portion 29. The closing wall portion 4b is connected to the short side base portion 7 so as to be rotatable. In addition, the short-side hinge portion 53 of the present embodiment is provided with a relay portion 59b that connects between each rotation connecting portion 57 and the plate-like portion 59a closer to the rotation connecting portion 57. . Therefore, the short side hinge part 53 of this embodiment is between the pair of corner projections 24 of the short side base part 7 (upper wall part 22) among the lower sides of the closed wall part 4b (short side wall part 4). ), The entire part corresponding to) is shaped like a wide area.

  7 and the like, in this embodiment, the short side bearing portion 27 (the rotation center of the short side wall portion 4) is the long side bearing portion 15 (the rotation center of the long side wall portion 3). ), The short side wall 4 cannot be folded unless the long side wall 3 is folded first. Accordingly, as shown in FIGS. 5 and 6, in a state in which the folding container 1 is folded (a non-use state in which all the side wall portions 3 and 4 are laid down parallel to the bottom wall portion 2), the short side wall The part 4 is folded so as to overlap the upper side of the long side wall part 3. In addition, as shown in FIG. 1, when the folding container 1 is assembled in a box shape that opens upward (use state in which all the side wall portions 3 and 4 are in an upright position), It is comprised so that an upper surface may become substantially flush.

  Further, as shown in FIG. 18, each locking wall 52 is formed with an insertion hole 55 that penetrates in the longitudinal direction of the closing wall portion 4 b and into which the insertion protrusion 32 of the long side wall portion 3 can be inserted. Yes. Further, a locking hook 56 that protrudes from the upper part of each locking wall 52 toward the center in the width direction of the closing wall 4 b and that can be inserted into the insertion recess 37 of the long side wall 3 is provided. In addition, a locking claw 56 a that protrudes downward is provided at the tip of the locking hook 56.

  Then, after the closed wall portion 4 b (short side wall portion 4) is raised, the long side wall portion 3 is raised so that the locking hook 56 is locked to the locking protrusion 45 of the locking part 41. (See FIG. 21) Abuts on the outer surface of both ends. The contact surface of the locking projection 45 with the locking hook 56 is inclined as described above, and the locking part 41 is further raised by raising the long side wall portion 3 from the state where both are in contact. Can be displaced downward against the urging force of the leaf spring portion 44, and the distal end portion of the locking hook 56 can be inserted into the insertion recess 37. Thereby, the insertion protrusion 32 of the long side wall portion 3 is inserted into the insertion hole 55 of the locking wall 52, and the outer surface side of the long side wall portion 3 is substantially in contact with and supported by the locking wall 52. Tilt displacement to the inside and outside of the short side wall portion 4 is prevented, and tilt displacement to the outside of the long side wall portion 3 is prevented. Further, when the locking claw 56a of the locking hook 56 is inserted into the insertion recess 37, the locking part 41 is returned to the upper position by the urging force of the leaf spring portion 44, and the locking claw 56a of the locking hook 56 is moved. It will be locked to the inner surface side of the locking projection 45. Thereby, the inclining displacement to the inner side of the long side wall portion 3 is also prevented.

  Further, when the long side wall 3 is folded (inwardly tilted), the locking projection 41 is displaced downward by pressing the operation recess 43 of the locking part 41 downward to displace the locking part 41 downward. Since the latching state of 45 and the latching claw 56a is released, the long side wall 3 can be folded above the bottom wall 2 by tilting the long side wall 3 inward in this state. . In addition, when the closed wall portion 4b is raised, the inner surface of the vertical wall portion 25 of the short side base portion 7 and the outer surface of the closed wall portion 4b are substantially in contact with each other, and therefore the closed wall portion 4b. Further outward displacement of the rotation is restricted.

  In addition, when the closed wall portion 4b is folded, a shift preventing convex portion 26 that protrudes from the corner protruding portion 24 is inserted into the vicinity of both ends of the lower side portion of the wall body 51 of the closed wall portion 4b. A recess 60 is formed. Thereby, the shift | offset | difference movement in the horizontal direction of the short side wall part 4 folded above the long side wall part 3 can be prevented more reliably.

  In addition, the vertical width of the wall main body 31 of the long side wall portion 3 is longer than half of the distance between the pair of long side base portions 6. On the other hand, as shown in FIG. 2, FIG. 7, etc., the height of the long side base portion 6 is slightly longer than the thickness of the two long side wall portions 3. Further, the long side bearing portion 15 is notched to the vicinity of the lower end portion of the inner wall portion 11 of the long side base portion 6, and the shaft portion 36 of the long side hinge portion 33 is formed on the long side bearing portion 15. It is comprised so that it can displace up and down inside. With this configuration, when one of the pair of opposing long side wall portions 3 is first tilted inward, the long side hinge portion 33 is rotated and displaced while the center of rotation is displaced downward. Thereby, the long side wall portion 3 can be tilted inward until the inner surface abuts against the upper surface of the bottom wall portion 2. Subsequently, when the other long-side side wall 3 is tilted inward, the long-side hinge 33 is rotated and displaced, and the center of rotation is displaced upward. Thereby, the long side wall portion 3 can be overlaid on the upper side of the long side wall portion 3 that has been tilted first.

  Next, the opening wall 4a will be described with reference to FIG. 2, FIG. 11, FIG. The opening wall 4a basically has the same configuration as the closing wall 4b, and includes a wall body 51, a locking wall 52, and a short side hinge 53. However, since the side wall opening portion 8 is formed in the opening wall portion 4a so that the upper side portion is recessed downward, the opening wall portion 4a has a substantially U-shape opening upward when viewed from the front.

  Moreover, in the part which demarcates the side edge part of the side surface opening part 8 among the reinforcement ribs 54 of the opening wall part 4a, the longitudinal direction of the side edge part of the side surface opening part 8 (the height direction of the opening wall part 4a). A guide rail 61 extending along the opening is formed, and an engagement hole 62 is formed as an opening-side engaged portion that penetrates in the lateral width direction of the opening wall 4a. Further, as shown in FIG. 11, a first fitting recess 63 is formed in a portion of the reinforcing rib 54 of the opening wall 4 a that defines the lower edge of the side opening 8. In addition, the upper side portion of the opening wall portion 4a is configured so that the portion adjacent to the side surface opening portion 8 is one step lower, and the second fitting recess 64 is provided in the reinforcing rib 54 of the portion that is one step lower. .

  In the present embodiment, the lateral width of the short side hinge portion 53 is configured to be wider than the lateral width of the side opening 8 and a door member 9 described later. Further, the vertical width of the side opening 8 (door member 9) is a length obtained by slightly shortening the vertical width of the wall body 51 of the short side wall portion 4 (by the thickness of one reinforcing rib 54). For this reason, the opening wall portion 4 a is shaped such that the left side portion and the right side portion are connected via the short side hinge portion 53.

  Moreover, the folding container 1 of this embodiment is provided with the door member 9 which can open and close the side surface opening part 8, and is provided with respect to the opening wall part 4a so that attachment or detachment is possible. Here, the door member 9 will be described with reference to FIGS. The door member 9 includes a substantially plate-like base portion 71 having an outer shape corresponding to the side opening portion 8, and is provided on an outer surface of the base portion 71 (a surface facing outward when the side surface opening portion 8 is closed). A reinforcing rib 72 is appropriately formed so as to protrude outward along at least the outer peripheral edge of the base portion 71.

  The door member 9 is provided with a pair of guide ribs 73 extending along both side portions so as to face each other in the thickness direction of the door member 9. Between the pair of guide ribs 73, a groove portion 74 is formed between which the guide rail 61 of the opening wall portion 4a can be inserted. Then, the guide rail 61 of the opening wall 4a is relatively inserted into the groove 74 of the door member 9, and the door member 9 is attached to the opening wall 4a from the upper side of the opening wall 4a. As shown in FIGS. 9 and 10, the side opening 8 is closed by the door member 9. A hole is formed in the guide rib 73 and a rib is formed on one side of the guide rail 61 to prevent the guide rib 73 and the guide rail 61 from coming into close contact with each other.

  As shown in FIGS. 13 and 14, the door member 9 is provided with a first fitting convex portion 75 projecting downward from the lower side portion. Further, the door member 9 is provided with a protruding portion 76 that protrudes laterally from the upper end portion of each side portion, and a second fitting convex portion 77 that protrudes downward from the lower surface of the protruding portion 76. ing. When the side opening 8 is closed by the door member 9, the first fitting convex portion 75 is fitted into the first fitting concave portion 63, and the second fitting convex portion 77 is fitted into the second fitting concave portion 64. (See FIG. 11). As shown in FIGS. 9 and 10, in this embodiment, the thickness of the door member 9 is slightly thinner than the thickness of the opening wall 4a, and the door member 9 is attached to the opening wall 4a. Is configured so that the inner surface of the door member 9 and the inner surface of the opening wall portion 4a are substantially flush with each other. Moreover, in the attachment state to the opening wall part 4a of the door member 9, the upper side of the opening wall part 4a and the upper side of the door member 9 are substantially flush.

  In addition, a lock member 81 configured as a separate body from the base portion 71 is provided at the outer surface side lower portion of the door member 9. As shown in FIGS. 13 and 16, the lock member 81 is a part main body 82 configured to be slidable in the vertical direction, and an engagement piece that slides in the horizontal direction in conjunction with the vertical movement of the part main body 82. And a lock bar 83.

  An operation recess 84 is formed in the center portion on the outer surface side of the part main body 82. Further, the part main body 82 is provided with a pair of left and right leaf spring portions 85 as biasing means extending obliquely upward from the upper surface thereof. The distal end portion of each leaf spring portion 85 is in pressure contact with the lower surface of a support rib 79 that integrally extends outward from the base portion 71 at a position above the lock member 81, whereby the part main body 82 is The door member 9 is biased toward the lower side. In addition, an oval slide frame 86 is formed on the inner surface side of the part main body 82 as a pair of left and right. Each slide frame 86 is inclined upward toward the side.

  Furthermore, a columnar interlocking protrusion 87 protruding from the outer surface is provided on one end side of the lock bar 83. In the lock bar 83, an interlocking protrusion 87 provided on one end side is accommodated on the inner peripheral side of the slide frame 86, and the other end side protrudes laterally from the part main body 82. 72 is inserted into a lock support hole 78 (see FIG. 15) formed in 72. In the present embodiment, when the lock member 81 is not operated, the interlocking protrusion 87 of the lock bar 83 is relatively positioned on the upper portion of the slide frame 86, and the lock bar 83 is located from the side portion of the door member 9. It is in a state of projecting to the side (as shown in FIGS. 13 and 14). When the side opening 8 is closed by the door member 9, each lock bar 83 is inserted into and engaged with the engagement hole 62 (see FIG. 11) of the opening wall 4a, and the door member 9 is opened. It becomes impossible to remove from the portion 4a (relative displacement is impossible).

  On the other hand, when the parts main body 82 is displaced upward against the urging force of the leaf spring portion 85, the interlocking protrusion 87 of the lock bar 83 is directed toward the lower portion of the slide frame 86 extending obliquely as described above. The door member 9 is also displaced toward the center in the width direction along with the displacement. For this reason, the lock bar 83 supported by the lock support hole 78 and configured to be slidable only in the horizontal direction along the outer surface of the door member 9 slides to the center side in the lateral width direction of the door member 9, In this state, the inner side of the door member 9 is retracted from the side portion of 9. Thereby, the engagement state of the lock member 81 and the engagement hole 62 is released, and the door member 9 can be removed from the opening wall portion 4a by lifting the door member 9 upward. In the present embodiment, the position where the lock bar 83 corresponding to the engagement piece protrudes laterally from the side portion of the door member 9 corresponds to the engagement position, and the lock bar 83 is from the side portion of the door member 9. The position retracted inward corresponds to the release position.

  In the present embodiment, the part main body 82 is provided with an operation side finger hook portion 88 that protrudes downward from the upper edge of the operation recess 84. Further, the support rib 79 that supports the leaf spring portion 85 is provided with a main body side finger hook portion 91 that protrudes upward at a position immediately above the operation recess 84 of the lock member 81. In the present embodiment, a release operation portion is configured by the operation concave portion 84 (operation side finger hook portion 88) of the part main body 82 of the lock member 81 and the support rib 79 (main body side finger hook portion 91).

  Then, while placing the thumb on the support rib 79 and placing the remaining fingers on the operation recess 84 to displace the part main body 82 closer to the support rib 79 side, the door member 9 itself is displaced upward. The part main body 82 can be relatively displaced upward and the lock bar 83 can be retracted from the side portion of the door member 9. In addition, since the operation side finger hook portion 88 and the main body side finger hook portion 91 are provided, it is easy to perform the release operation as described above, and a finger is placed on the operation side finger hook portion 88 and the main body side finger hook portion 91. By hanging, the door member 9 can be moved (carried) with one hand without touching the outer peripheral edge of the door member 9. Further, with the hand holding the door member 9, the distance between the operation recess 84 (operation side finger hook portion 88) and the support rib 79 (main body side finger hook portion 91) is reduced, and the lock bar 83 is moved to the door member. It can be made to protrude from the side part of 9 (it can be displaced to an engagement position and a cancellation | release position).

  In addition, a locking hole 92 penetrating in the thickness direction is formed at the upper center of the base portion 71 of the door member 9. The locking hole 92 is formed adjacent to the lower side of the reinforcing rib 72 formed along the upper side of the door member 9. In addition, a hooking portion 93 that protrudes downward from the outer edge of the reinforcing rib 72 so as to protrude from the outer edge to the inner peripheral side of the locking hole 92 is provided at a portion corresponding to the locking hole 92. The door member 9 can also be carried by hooking a finger on the hook portion 93.

  Now, in this embodiment, as shown in FIG. 3, FIG. 19, FIG. 20, in the closed wall portion 4b, the door member 9 removed from the opening wall portion 4a can be mounted. More specifically, as shown in FIG. 17, an accommodation recess 66 capable of accommodating the door member 9 is formed on the outer surface side of the closing wall 4b. Further, the housing recess 66 is surrounded by the reinforcing rib 54, and the door member 9 mounted on the closing wall portion 4b is disposed on the inner peripheral side with respect to the outer peripheral edge of the closing wall portion 4b. In the present embodiment, the closing wall portion 4b constitutes a mounting wall portion.

  Furthermore, a flange portion 68 is provided at the upper center of the outer surface side of the wall main body 51 of the closed wall portion 4b. Further, the closing wall 4b is closed at a position corresponding to the front end of the lock bar 83 of the lock member 81 of the door member 9 accommodated in the accommodation recess 66 at a portion defining the side edge of the accommodation recess 66. A lock hole 69 is formed as a mounting-side engaged portion that penetrates the wall 4b in the lateral width direction.

  Then, the lock member 81 of the door member 9 is operated so that the lock bar 83 is retracted from the side portion of the lock member 81, and the flange portion 68 of the closed wall portion 4 b is moved from the outer surface side of the closed wall portion 4 b to the door. The door member 9 is accommodated in the accommodating recess 66 while being inserted into the locking hole 92 of the member 9. Most of the door member 9 housed in the housing recess 66 is housed inside the housing recess 66 (more than half the thickness of the door member 9). By releasing the lock member 81 after the housing, the lock bar 83 is inserted into the lock hole 69 and engaged, and the door member 9 cannot be removed from the closed wall portion 4b (relative displacement is impossible).

  Further, the door member 9 attached to the closing wall portion 4b protrudes slightly from the outer surface of the closing wall portion 4b, and does not protrude from the outer peripheral surface or inner surface side of the closing wall portion 4b. For this reason, even when the closed wall 4b is rotated with the door member 9 mounted, the door member 9 does not interfere with the short side base 7 or the long side wall 3 or the like, The closing wall 4b can be rotated relatively smoothly. Therefore, in this embodiment, as shown in FIG. 6, even when the door member 9 is attached to the closed wall portion 4b, all the side wall portions 3 and 4 can be folded.

  In addition, the housing recess 66 is formed with a notch or the like as appropriate in the reinforcing rib 54, so that most of the outer peripheral surface of the door member 9 attached to the closing wall portion 4b and the inner peripheral surface of the housing recess 66 are approximately. It is comprised so that it may contact | abut and suppression of the rattling of the door member 9 is achieved. In addition, the upper and lower portions inside the receiving recess 66 are provided with a contact rib 67 formed by shortening the protruding length of the reinforcing rib 54, and the door member 9 received in the receiving recess 66 is The closed wall portion 4b is held in a state of being separated from the outer surface of the wall main body 51.

  The vertical width of the door member 9 is substantially the same (slightly shorter) as the vertical width of the wall body 51 of the opening wall portion 4a and the closing wall portion 4b. For this reason, with respect to the closed wall portion 4b configured to surround the entire outer periphery of the mounted door member 9, the housing recess 66 extends to the short side hinge portion 53 that is configured wider than the door member 9. Exist. Further, the strength of the short side hinge portion 53 is ensured by the abutting rib 67. Further, with respect to the vertical wall portion 25 of the short side base portion 7 to which the closing wall portion 4b is rotatably connected, the entire housing recess 66 is exposed to the side even when the closing wall portion 4b is raised. Corresponding parts are notched. Thereby, the door member 9 can be attached to and detached from the closed wall portion 4b even in a state where the closed wall portion 4b is raised.

  The short side wall 4 in the folded state is positioned below the upper edge of the corner protrusion 24 and the slip prevention protrusion 26, and in the vertical direction, the upper surface of the corner protrusion 24, The distance from the short side wall 4 is longer than the protruding length of the bottom rib 2b from the bottom plate 2a. Furthermore, even if the door member 9 is mounted on the closed wall portion 4b and the closed wall portion 4b is folded, the distance between the upper surface of the corner projection 24 and the door member 9 in the vertical direction is such that the bottom rib 2b It is longer than the protruding length from the bottom plate 2a. Therefore, as shown in FIGS. 23 and 24, when the folded containers 1 in a folded state are stacked up and down (stacked), the upper folded container on the upper surface of the corner projection 24 of the lower folded container 1. 4 corners of the lower surface of the folding container 1 are supported, and the four corners of the outer peripheral surface of the bottom rib 2b of the upper folding container 1 are formed by the respective corner projections 24 and the slip prevention projections 26 of the lower folding container 1. It is positioned in contact with the corner portion. Therefore, the folded containers 1 in the folded state can be stably stacked.

  Further, even when all the side wall portions 3 and 4 are erected and used in a box shape, when the folding containers 1 are stacked, the upper side folding containers 1 are separated by the upper side portions of the side wall portions 3 and 4 of the lower folding container 1. 1 is supported, and the bottom rib of the upper folding container 1 enters the inner circumferential side of the side walls 3 and 4 of the lower folding container 1 for positioning. Therefore, the folding containers 1 in use can be stably stacked.

  As described in detail above, according to the present embodiment, an article accommodated in the folding container 1 can be taken out from the side to one side (opening wall 4a) of the short side wall 4. A side opening 8 is formed, and a door member 9 that can open and close the side opening 8 is detachably provided on the opening wall 4a. Furthermore, the folding container 1 of this embodiment is provided with the closing wall part 4b which can mount | wear with the door member 9 removed from the side surface opening part 8 so that the side surface opening part 8 may be opened. For this reason, it is possible to avoid a situation in which the door member 9 is lost while the folding container 1 is used with the side opening 8 opened. Moreover, since the door member 9 is always with the main body of the folding container 1, it is not necessary to separately secure a storage place for the door member 9 that is not used, and workability when the door member 9 is frequently attached or removed is improved. Improvements can be made. Therefore, the convenience (usability) of the folding container 1 including the detachable door member 9 can be improved.

  In addition, the door member 9 can be mounted on the outer surface side of the closing wall 4b. For this reason, the door member 9 attached to the closed wall 4b avoids a situation in which the accommodation space inside the folding container 1, the opening above the folding container 1, and the side opening 8 are narrowed. In addition, it is possible to improve workability when the door member 9 is attached to and detached from the closed wall portion 4b.

  When the side opening 8 is closed by the door member 9, the lock bar 83 of the lock member 81 of the door member 9 is inserted into the engagement hole 62 of the opening wall 4 a and engaged, and the door member 9 is engaged. In the state of being attached to the closing wall portion 4b, the lock bar 83 is inserted into and engaged with the lock hole 69 of the closing wall portion 4b. Therefore, the door member 9 can be fixed to the closed wall portion 4b by using the lock member 81 for fixing the door member 9 to the opening wall portion 4a. For this reason, for example, the door member 9 has a simplified structure, improved workability, and lighter weight than the case of providing the locking member for the closing wall portion 4b separately from the locking member for the opening wall portion 4a. Etc. can be achieved. In addition, since the lock bar 83 is configured to slide along the outer surface of the door member 9 (base portion 71), the engaged wall that engages with the lock bar 83 in the opening wall portion 4a and the closing wall portion 4b. The portions (engagement holes 62, lock holes 69) can be formed relatively easily, and the engagement state can be stabilized.

  Further, the door member is formed by hooking a finger on the operation side finger hook portion 88 formed on the lock member 81 of the door member 9 and the main body side finger hook portion 91 formed on the main body side (support rib 79) of the door member 9. 9 (with one hand) and by applying force (gripping) the operation side finger hook portion 88 and the main body side finger hook portion 91 as they are, the lock bar 83 is moved to the release position. Can be displaced. Therefore, the workability at the time of replacing the door member 9 between the opening wall portion 4a and the closing wall portion 4b can be dramatically improved. Particularly, if the door member 9 is gripped by putting fingers on the knobs 88 and 91, the door member 9 can be carried without having the outer peripheral edge of the door member 9, so that the housing formed in the closed wall portion 4b. The door member 9 can be moved relatively smoothly into the inner peripheral side of the recess 66, and the above-described operation and effect of improving workability for mounting the door member 9 to the closed wall portion 4b can be achieved more reliably. Further, since the finger is hung not only on the lock member 81 but also on the main body side of the door member 9, stability and durability when the door member 9 is lifted can be improved.

  Furthermore, in this embodiment, not only when the door member 9 is attached to the opening wall portion 4a, but also when the door member 9 is attached to the closed wall portion 4b, all the side wall portions 3 and 4 are laid down. As a position, the folding container 1 can be folded compactly. Therefore, the convenience can be improved, and even when a plurality of folding containers 1 are stacked, they can be ordered. Further, even when the folding container 1 is folded and transported / stored, it is not necessary to remove the door member 9 one by one. The door member 9 is transported / stored separately from the main body of the folding container 1 or the door member 9 is lost. It is possible to improve the workability when the folding container 1 is folded or assembled.

  Moreover, in this embodiment, the short side hinge part 53 of the opening wall part 4a is comprised wider than the side surface opening part 8 and the door member 9. As shown in FIG. For this reason, even if the vertical width of the side opening 8 is relatively large so as to be substantially the same as the vertical width of the wall main body 51 of the opening wall 4a, the short side hinge portion 53 and the left side of the wall main body 51 The shape of the opening wall part 4a can be maintained by connecting the right side part. Therefore, the side opening 8 can be formed as large as possible, and the workability at the time of putting in / out the article through the side opening 8 can be improved.

  In addition, in this embodiment, the short side wall part 4 (opening wall part 4a and closing wall part 4b) to which the door member 9 is mounted is configured to be folded above the long side wall part 3. Yes. That is, when the short side wall 4 is folded down (forward), the short side wall 4 is folded while avoiding interference with the long side wall 3 and the long side base 6. Therefore, it becomes necessary to narrow the lateral width of the short side wall 4. In this regard, as in the present embodiment, the short side wall 4 is folded up (rear) so that the short side wall 4 extends to the full width (in the short direction) of the container 1. Therefore, the side opening 8 can be formed as wide as possible.

  Further, the door member 9 is configured such that the guide rail 61 formed along the side edge portion of the opening wall portion 4a is relatively inserted into the groove portion 74 formed along the side portion of the door member 9. Can be guided to a position where the side opening 8 can be closed relatively smoothly. Further, in a state where the side opening 8 is closed by the door member 9, the first fitting convex portion 75 and the second fitting convex portion 77 of the door member 9 are replaced with the first fitting concave portion 63 and the first fitting concave portion 63 of the opening wall portion 4a. With the configuration of fitting into the two fitting recesses 64, it is possible to suppress the deformation of the door member 9 and more reliably maintain the state in which the side opening 8 is closed by the door member 9.

  In addition, it is not limited to the description content of the said embodiment, For example, you may implement as follows. Of course, other application examples and modification examples not illustrated below are also possible.

  (A) In the said embodiment, in the state which folded the side wall parts 3 and 4, although the long side wall part 3 overlaps with the short side wall part 4 on the lower side, the long side wall side part 4 overlaps the upper side. You may comprise so that the part 3 may be an upper side and the short side wall part 4 may overlap with a lower side. Furthermore, you may comprise so that the door member 9 can be mounted | worn by providing the side surface opening part 8 and the accommodation recessed part 66 in the direction folded down among the side wall parts 3 and 4. FIG. Moreover, in the said embodiment, one is comprised as an opening wall part (4a) in which the side surface opening part 8 was formed among a pair of opposing short side wall parts 4, and the other of the short side wall part 4 was Although it is configured as a mounting wall portion (closing wall portion 4b) to which the door member 9 removed from the opening wall portion can be mounted, it is not particularly limited to such a configuration, and the four side wall portions 3, 4, one opening wall portion and one mounting wall portion are provided, and at least one side opening portion 8 can be changed to a state in which all opening portions and all side opening portions 8 are closed. It only has to be configured. For example, two opening wall portions (and two door members 9) and two mounting wall portions may be provided, or one opening wall portion and two mounting wall portions may be provided. Alternatively, three opening wall portions (and three door members 9 having the same shape) and one mounting wall portion may be provided.

  (B) Moreover, it does not specifically limit about the structure which connects the side wall parts 3 and 4 with respect to the bottom wall part 2 so that rotation is possible. For example, the short side wall 4 may be connected to the bottom wall 2 with a substantially T-shaped hinge such as the long side hinge 33. However, even if the side opening 8 is formed to be relatively large by configuring the short side hinge 53 of the opening wall 4a to be wide as in the above embodiment, the short side hinge 53 has an opening wall. The shape of the part 4a can be maintained. Therefore, the side opening 8 can be formed as large as possible, and the workability at the time of putting in / out the article through the side opening 8 can be improved.

  Furthermore, in the said embodiment, although each side wall part 3 and 4 is embodied in the folding container 1 which can be rotationally displaced, the bottom wall part 2 and the side wall parts 3 and 4 are integrally formed, and a side wall part is formed. You may apply to the box-type container which 3 and 4 do not carry out rotational displacement. Further, the shape of the bottom wall portion 2 is not particularly limited. For example, the planar shape may be an other corner shape having three or more side portions, or a substantially regular polygon shape. It may be a substantially circular shape or a substantially elliptical shape. However, when configured to be foldable, the bottom wall portion 2 is preferably configured in a substantially rectangular plate shape.

  (C) The configuration for engaging the door member 9 with the opening wall 4a and the closing wall 4b is not particularly limited. For example, the guide rail 61 and the guide rib 73 are omitted, or the fitting protrusion The portions 75 and 77 and the fitting recesses 63 and 64 may be omitted. Furthermore, in the said embodiment, although the lock member 81 is provided in the lower side of the door member 9, while providing a lock member in the upper side of the door member 9, the locking hole 92 is provided in the lower side of the door member 9. It is good. Moreover, in the said embodiment, even if it tries to attach the door member 9 to the opening wall part 4a or the closing wall part 4b in a wrong direction (for example, the inner and outer surfaces are opposite, upside down), it cannot be attached (for example, The fitting convex portions 75 and 77 may not be fitted into the fitting concave portions 63 and 64).

  (D) In the above embodiment, the folding container 1 is made of polypropylene, but may be made of other resin materials such as polyethylene, PET, and polyamide.

  DESCRIPTION OF SYMBOLS 1 ... Folding container, 2 ... Bottom wall part, 3 ... Long side wall part, 4 ... Short side wall part, 4a ... Opening wall part, 4b ... Closure wall part, 6 ... Long side side base part, 7 ... Short Side-side base, 8 ... side opening, 9 ... door member, 62 ... engagement hole, 66 ... receiving recess, 69 ... lock hole, 79 ... support rib, 81 ... lock member, 82 ... parts body, 83 ... lock Bar, 84 ... operation recess, 85 ... leaf spring, 88 ... operation side finger hook, 91 ... main body side finger hook.

Claims (4)

A bottom wall portion having a substantially plate shape, and a peripheral wall portion extending upward along the outer peripheral edge of the bottom wall portion,
The peripheral wall portion is
An opening wall portion in which a side opening that allows an article housed inside to be taken out from the side is formed and a door member that can open and close the side opening is detachably provided;
A mounting wall that can be mounted on the outer surface of the door member removed from the opening wall ;
The door member includes a lock member having an engagement piece slidable along an inner surface or an outer surface of the door member,
The opening wall portion includes an opening-side engaged portion that engages with the engagement piece of the lock member in a state where the side opening is closed by the door member,
The mounting wall portion includes a mounting-side engaged portion that engages with the engaging piece of the lock member, and the door member is formed by the engagement of the engaging piece and the mounting-side engaged portion. box-type container but characterized by Rukoto fixed to the mounting wall portion. The engagement piece includes an engagement position that can be engaged with the opening-side engaged portion or the mounting-side engaged portion, and the opening-side engaged portion or the mounting-side engaged portion. It is configured to be displaceable to a release position where the engagement state can be released,
The door member includes a biasing unit that biases the engagement piece toward the engagement position, and displaces the engagement piece toward the release position against the biasing force of the biasing unit. A release operation unit that is operated by the operator when
The release operation portion includes an operation side finger hook portion provided on the lock member and a main body side finger hook portion provided on the main body side of the door member, and the operation side finger hook portion and the main body side finger portion are provided. It is configured to be able to carry the door member by hanging a finger on the hanging portion, and by pressing the operation side finger hanging portion close to the main body side finger hanging portion, the engagement piece is The box-shaped container according to claim 1 , wherein the container is displaced toward the release position. A bottom wall portion having a substantially plate shape, and a peripheral wall portion extending upward along the outer peripheral edge of the bottom wall portion,
The peripheral wall portion is
An opening wall portion in which a side opening that allows an article housed inside to be taken out from the side is formed and a door member that can open and close the side opening is detachably provided;
A mounting wall that can be mounted on the outer surface of the door member removed from the opening wall ;
The bottom wall portion has a substantially rectangular plate shape, and the peripheral wall portion includes four side wall portions that are rotatably connected to the side portions of the bottom wall portion,
Each of the side walls is formed between an upright position erected upward along each side part of the bottom wall part and a lying position that is folded over the bottom wall part and parallel to the bottom wall part. It is configured to be able to rotate and displace,
At least one of the side wall portions is configured as the opening wall portion, and at least one of the side wall portions other than the opening wall portion is configured as the mounting wall portion,
Box the door member is characterized by configuration der Rukoto collapsible on the upper side of the bottom wall portion as the opening wall portion and also in a state of being mounted on either of the mounting wall portion, lay the all of the sidewall portion located Mold container. The bottom wall portion has a substantially rectangular plate shape, and the peripheral wall portion includes four side wall portions that are rotatably connected to the side portions of the bottom wall portion,
Each of the side walls is formed between an upright position erected upward along each side part of the bottom wall part and a lying position that is folded over the bottom wall part and parallel to the bottom wall part. It is configured to be able to rotate and displace,
At least one of the side wall portions is configured as the opening wall portion, and at least one of the side wall portions other than the opening wall portion is configured as the mounting wall portion,
The configuration is such that, regardless of whether the door member is mounted on the opening wall portion or the mounting wall portion, all the side wall portions are folded to the upper side of the bottom wall portion as the sleeping position. The box-type container according to 1 or 2 .

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