JP2012020744A - Box-shaped container - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a box-shaped container that includes a door member for opening and closing an opening formed on a sidewall, while improving durability and preventing rattling.SOLUTION: The box-shaped container 1 is configured as an open-top box, and includes a body 2 with an opening 3 for allowing an article stored inside to be put in/taken out from the side, and a door member 4 for opening and closing the opening 3. The opening 3 is formed between both sides (opening wall 14) of a long side wall 12, in the long side wall 12 of the body 2. The door member 4 is turnably connected to a lower end of an opening periphery that partitions the opening 3 via a flexible connection 43, and is configured to open the closed opening 3 toward the outside. The body 2, door member 4 and connection 43 are integrally formed by molding.

Description

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

  In general, a box-shaped container used for conveying an article includes a substantially rectangular bottom wall portion and side wall portions extending upward from four side portions of the bottom wall portion. It is configured to take in and out. In addition, an opening is formed in the side wall, a door member that can open and close the opening is provided, and the opening is opened to allow articles to be taken in and out from the side of the box-type container. (See, for example, Patent Document 1).

Japanese Patent No. 3766606

  By the way, the box-shaped container of the said patent document 1 is a foldable box-shaped container provided with the side wall part provided so that folding was possible via the hinge part with respect to the bottom wall part. For this reason, it is inferior in strength compared to a box-type box container in which the side wall portion integrally extends from the bottom wall section, and may cause various problems when handled in a messy manner. It was necessary to handle it carefully so that the force would not work. In particular, when an opening is formed in the foldable side wall, and the door member is provided so as to be openable and closable via the hinge corresponding to the opening, such a concern becomes more prominent. In addition, the folding box-type container is relatively easily deformed and deformed as compared with the box-type box-type container, so that the box-type container is rattled during transportation and the like, and the contained articles are adversely affected. There is concern.

  The present invention has been made to solve the above-described problems, and its purpose is to improve durability and suppress rattling in a configuration including a door member that opens and closes an opening formed in a side wall. The object of the present invention is to provide a box-type container capable of achieving the above.

  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 a corresponding means are added as needed.

Means 1. A substantially rectangular plate-like bottom wall,
A side wall portion integrally extending upward from each side portion of the bottom wall portion,
In at least one side wall, an opening that penetrates in the thickness direction of the side wall is formed so as to leave both sides of the side wall, and a door member that can open and close the opening is provided,
The door member is rotatably connected to a lower edge portion of an opening peripheral edge portion defining the opening portion through a flexible thin film-like connecting portion, and is closed with the opening portion closed. Configured to be open to the outside from the state,
The box-shaped container, wherein the bottom wall portion, the side wall portion, the connecting portion, and the door member are integrally formed by molding.

  The box-shaped container of the means 1 is a type of box-shaped container in which an opening is formed in the side wall and a door member capable of opening and closing the opening is provided. It is not a foldable type that is pivotally connected via a hinge part, but a box-type container having a side wall part that extends integrally from the bottom wall part and does not move relative to each other. Then, the opening is formed in such a manner that both side portions of the side wall portion remain in the predetermined side wall portion. For this reason, compared with a foldable type, the strength of the whole box-type container is high, the damage of the box-type container can be suppressed, and the shape retainability is also excellent. Therefore, the durability of the box-shaped container can be improved, and the box-shaped container can be prevented from rattling (distortion deformation) during transportation or when stress is applied. It is possible to suppress a situation in which rattling causes an adverse effect on an article accommodated in a box-shaped container (such as a collapse of the shape). As a result, even when an article whose shape tends to collapse is accommodated, the article can be suitably transported and stored.

  Moreover, in this means 1, the hinge part for providing a door member so that opening and closing is possible is comprised by the thin-film-like connection part which has flexibility, and a bottom wall part, a side wall part, a connection part, and a door member are integrated. Is formed. For this reason, for example, compared with the case where the hinge portion is configured by the engaging portion provided in the door member and the engaged portion provided in the main body portion of the box-type container, the configuration is simplified and the mold is formed. Can be simplified. Furthermore, the work of assembling the door member to the main body can be omitted, and the productivity can be improved. In addition, since the structure of the hinge part is simple, it is possible to prevent dust and the like from remaining in the hinge part when the box-type container is washed, and to use the box-type container more hygienically. be able to.

  Mean 2. The lower edge part of the opening peripheral edge part that defines the opening part is formed to extend from the outer peripheral edge of the bottom wall part to the outer peripheral side of the bottom wall part continuously or substantially continuously with the upper surface of the bottom wall part. The box-shaped container according to means 1, which is constituted by a plate-like lower flange.

  According to the means 2, there is no step between the lower edge of the opening (the upper surface of the lower flange) and the upper surface of the bottom wall, and the article is compared with the box-shaped container through the opening. Can be put in and out of the target.

  Note that the upper surface of the lower flange and the upper surface of the bottom wall portion (the bottom surface of the box-type container) are not necessarily flush with each other in the opening, and the upper surface of the lower flange is located slightly above the upper surface of the bottom wall portion. It is also possible to do that. In this case, when the box-shaped container is installed so as to be inclined downward toward the opening side, the situation that the stored article flows out of the opening as soon as the door member is opened is suppressed. can do. However, when this configuration is adopted, it is desirable that an inclined portion is formed at a boundary portion between the upper surface of the lower flange and the upper surface of the bottom wall portion. In this case, similarly to the case where the upper surface of the lower flange and the upper surface of the bottom wall portion are flush with each other, the article can be smoothly put in and out through the opening so as to slide on the bottom wall portion and the upper surface of the lower flange. it can. In addition, when the lower surface of the lower flange is positioned above the lower surface of the bottom wall portion, the box-shaped containers can be stably stacked, and the lower flange is positioned above the grounding surface of the box-shaped container. It is possible to increase the sanitary aspect of an article that can be spaced apart and that is taken in and out through the opening. As a result, even when an article (food, etc.) requiring strict hygiene management is accommodated, the article can be suitably transported and stored.

  In addition, the connection part is good also as connecting the outer edge part of the lower surface of the door member in the closed state which closed the opening part, and the outer edge part of a lower flange. In this case, when the door member is in the closed state, the door member is better accommodated (the door member is positioned immediately above the lower flange, and the door member is configured not to protrude outward from the lower flange). Space efficiency can be improved. Furthermore, the door member can be opened by rotating 180 degrees. For example, the door member is placed on a table (or in a state where the box member is stacked above the lower box container). The operator can work at a position closer to the box-type container when the article is opened and removed, and for example, the operator touches a door member that opens only about 120 degrees and touches the box-type container. It is possible to prevent a situation in which the main body (the bottom wall and the side wall) is inclined. Further, when the door member is opened 180 degrees, the upper surface of the lower flange, the inner surface of the connecting portion (exposed upward in the opened state), and the lower surface of the door member (located upward in the opened state) A relatively large level difference can be suppressed, and it is possible to more easily carry out the work of putting in and out the article from the opening with respect to the box-shaped container.

Means 3. In the door member, a notch is formed at both ends of the side connected to the connecting part,
Means 1 is provided on both sides of the lower flange, with mounting protrusions that can be supported by contacting the lower surface of the door member at the notch when the door member is closed. Or the box-shaped container of 2.

  According to the means 3, in the closed state of the door member, the door member is placed and supported above the placement protrusion. Therefore, when a downward force is applied to the door member in the closed state, it is possible to prevent a situation in which a relatively large stress acts on the lower flange or the connecting portion and is damaged. In particular, when the lower flange is extended continuously or substantially continuously from the upper surface of the bottom wall portion as described in the above means 2, the lower flange cannot be made thick. If this is adopted, the lower flange can be reliably prevented from being damaged.

Means 4. Each side wall includes a vertical wall extending upward from a side portion of the bottom wall, an upper flange extending outward from an upper edge of the vertical wall, and a lower edge of the vertical wall A lower flange that extends outward from the vertical wall along the portion, and a reinforcing rib that connects between the upper and lower flanges,
With respect to the side wall portion in which the opening is formed, at least a pair of the reinforcing ribs are provided so as to face each other with the opening interposed therebetween, and the vertical wall portion extends to the opening side of the reinforcing rib. The upper flange extends to the edge on the opening side of the upper edge of the vertical wall,
The door member in the closed state is characterized in that the inner side surface on both sides is in contact with or close to the outer side surface of the vertical wall, and the upper side portion on both sides is covered with the upper flange. A box-shaped container according to any one of means 1 to 3.

  According to the means 4, the door member falls to the inside of the box-shaped container because the outer side surface of the portion located on both sides of the opening of the vertical wall portion and the inner side surface of the door member abut or approach each other. It is possible to reliably prevent such a situation that a gap penetrating in the outer peripheral direction of the box-shaped container is formed between the door member and the peripheral edge portion of the opening. Intrusion of dust and the like from the gap can be prevented.

  In addition, since the upper flange extends to the portion of the vertical wall portion that extends to the opening side of the reinforcing rib, the strength of the vertical wall portion that supports the door member can be improved and closed. It is possible to protect both side portions of the upper surface of the door member in the state of being made. Further, when an upward force is applied to the door member in the closed state, the door member to be displaced upward can be supported by the upper flange (displacement is restricted). It is possible to suppress a situation in which a load is applied to the connecting portion.

  Means 5. The box-shaped container according to any one of means 1 to 4, wherein, in the closed state of the door member, the connecting portion is disposed on the inner side of the outer edge portion of the side wall portion.

  According to the means 5, the connecting part is rubbed as in the case where the connecting part protrudes outside the outer edge of the box-shaped container (corresponding to the means 4 and the outer edge of the lower flange or the reinforcing rib), The situation where it becomes easy to damage a connection part by being pressed etc. can be prevented.

  The box-shaped container is integrally formed by a mold apparatus so that the door member that opens the opening is opened, but the connecting portion is the outer edge of the lower flange of the side wall or the reinforcing rib. When the door member is provided on the inner side, even if the door member is in an open state, the members are densely arranged in the vicinity of both sides of the lower surface of the door member connected to the connecting portion, so that it is very difficult to mold such a part. There is a risk of becoming something. In other words, it is necessary to make the mold member for molding the portion thin, and the strength of the mold member may not be able to withstand the molding. On the other hand, if the door member is opened by forming notches on both sides of the lower surface of the door member as in the above means 3, the gap between the both side portions of the lower surface of the door member and the main body portion. Therefore, a box-shaped container can be formed reliably and relatively easily. Furthermore, according to the same means 3, when the door member is in the closed state, since the mounting projection on which the notch is placed is provided, the door member can be removed by forming the notch. Even in the closed state, a gap is formed between the door member and the main body (opening peripheral edge), and a situation in which dust or the like enters through the gap can be suppressed.

  Means 6. The box-shaped container according to any one of means 1 to 5, wherein the door member in the closed state is disposed entirely inside an outer edge portion of the side wall portion.

  According to the means 6, the door member (and the door) (as in the case where the door member protrudes outside the outer edge of the box-type container (corresponding to the means 4 and the outer edges of the upper and lower flanges and the reinforcing rib)). It is possible to prevent a situation in which the door member or a member connected to or in contact with the door member is easily damaged due to rubbing or pressing of the locking means for maintaining the closed state of the member. .

  Mean 7 The box-shaped container according to any one of means 1 to 6, wherein the upper side portion of the door member in the closed state is positioned below the upper side portion of the side wall portion.

  According to the means 7, it is possible to suppress a situation in which a downward force is applied to the upper side portion of the door member. In particular, when box-shaped containers are stacked, it is possible to avoid that the upper box-shaped container contacts the door member of the lower box-shaped container. Therefore, damage to the door member and the connecting portion can be prevented. Even in the state where the box-shaped containers are stacked, the door member of the lower box-shaped container can be opened to check or take out the stored articles.

Means 8. Each side wall includes a vertical wall extending upward from a side portion of the bottom wall, an upper flange extending outward from an upper edge of the vertical wall, and a lower edge of the vertical wall A lower flange that extends outward from the portion, and a reinforcing rib that connects between the upper and lower flanges,
Of the reinforcing ribs formed on the side wall portions located on both sides of the opening portion, at least a pair of reinforcing ribs facing each other with the opening portion interposed therebetween is more than the reinforcing ribs formed on the other side wall portions. The box-shaped container according to any one of means 1 to 7, wherein the container is also thick.

  According to the means 8, the strength of the side wall portions located on both sides of the opening portion can be increased, and the shape of the main body portion of the box-type container can be maintained, and consequently the shape of the opening peripheral edge portion can be maintained. Therefore, it is possible to prevent a situation in which the opening portion cannot be suitably closed by the door member due to distortion of the main body portion or the like.

It is a perspective view of the box-shaped container in which a door member is in a closed state. It is a perspective view of the box-shaped container in which a door member is an open state. It is a perspective view which shows the lower surface side of a box-shaped container. It is a top view of a box-type container. FIGS. 2A and 2B are cross-sectional views taken along line AA in FIG. 1, in which FIG. 1A illustrates a state in which the door member is in a closed state, and FIG. FIGS. 2A and 2B are cross-sectional views taken along line B-B in FIG. 1, in which FIG. 1A illustrates a state in which the door member is in a closed state, and FIG. 1B illustrates a state in which the door member is in an open state. It is a partial expansion perspective view which shows locking parts, a part accommodating part, etc. It is a perspective view containing the partial cross section which shows the box-shaped container piled up.

  Hereinafter, an embodiment will be described with reference to the drawings. As shown in FIG. 1, FIG. 2, etc., the box-type container 1 is configured in a box shape opened upward, and an opening 3 for taking in and out articles accommodated inside from the side (see FIG. 2). ) And a door member 4 that can open and close the opening 3. The box-type container 1 of the present embodiment is made of polypropylene.

  First, the main body 2 will be described. The main body 2 includes a substantially rectangular plate-like bottom wall 11, a pair of long side wall portions 12 extending upward from the opposing long side portions of the bottom wall portion 11, and an opposing short side of the bottom wall portion 11. A short side wall portion 13 that extends upward from each side portion and connects the edges of the pair of long side wall portions 12 is provided.

  Further, one of the pair of long side wall portions 12 penetrates in the outer peripheral direction of the box-type container 1 so as to leave both side portions of the long side wall portion 12 (sites connected to the short side wall portions 13). And the said opening part 3 opened upwards is formed. In the present embodiment, the opening 3 is formed from the upper edge portion to the lower edge portion of the long side wall portion 12 so that the one long side wall portion 12 is divided into left and right. Hereinafter, the long side wall part 12 (side wall part located on both sides of the opening part 3) in which the opening part 3 is formed is also referred to as "opening wall part 14".

  Each side wall part 12 and 13 of this embodiment has the vertical wall part 21 extended upward from each side part of the bottom wall part 11, and the upper flange 22 which protrudes outside from the upper edge part of the vertical wall part 21. A lower flange 23 protruding outward from the vertical wall portion 21 along the lower edge portion of the vertical wall portion 21 and a reinforcing rib 24 connecting the upper flange 22 and the lower flange 23 are provided. In addition, there is no level | step difference between the front-end edge of the upper flange 22, the front-end edge of the lower flange 23, and the front-end edge of the reinforcement rib 24, and it is flush | level.

  In particular, two reinforcing ribs 24 are provided for each of the opening wall portions 14 located on both sides of the opening 3, and the reinforcing ribs 24 are formed on the other side wall portions 12 and 13. It is thicker than. Further, the vertical wall portion 21 of the opening wall portion 14 includes two reinforcing ribs 24 provided on each opening wall portion 14, the reinforcing ribs 24 positioned on the opening portion 3 side (a pair opposed to each other across the opening portion 3). The reinforcing ribs 24) extend to the opening 3 side. Hereinafter, the pair of reinforcing ribs 24 that are opposed to each other with the opening 3 interposed therebetween is also referred to as “opening rib 26”, and a portion of the vertical wall portion 21 of the opening wall portion 14 that is located closer to the opening 3 than the opening rib 26 is “ Also referred to as “strip plate portion 27”. Furthermore, the upper flange 22 is extended to the edge on the opening 3 side of the upper edge portion of the band plate portion 27.

  In addition, a locking hole 31 penetrating right and left (in the thickness direction of the opening rib 26) is formed in the upper portion of the opening rib 26. Further, the opening rib 26 protrudes from the peripheral portion of the locking hole 31 on the surface opposite to the surface on the opening 3 side (the surface facing the door member 4 in a state in which the opening 3 is closed). Enclosure ribs 32 are provided. Thereby, the intensity | strength of the peripheral part of the locking hole 31 is raised.

  In addition, a mounting protrusion 33 that protrudes outward is provided at the lower portion of the band plate portion 27. The mounting protrusion 33 is also connected to the surface of the opening rib 26 on the opening 3 side, and has a substantially box shape that opens downward. Further, the belt plate portion 27 is provided with an engaging convex portion 34 that protrudes outward at a position slightly displaced above the locking hole 31 and a position displaced slightly below (see FIG. 2 and the like). ).

  As shown in FIGS. 2, 6, and the like, in the present embodiment, even at the portion corresponding to the opening 3, the outer peripheral side of the bottom wall 11 is substantially continuous from the upper surface of the bottom wall 11. A substantially plate-like lower flange 23 that extends is provided. In the present embodiment, the opening 3 is defined by the lower flange 23 and the pair of strip plates 27. Hereinafter, the lower flange 23 that defines the lower edge of the opening 3 is also referred to as an “opening flange 28”. In the present embodiment, the lower flange 23 is not formed at a portion corresponding to the band plate portion 27, and the opening flange 28 is formed only between the pair of left and right band plate portions 27. Moreover, the corner part of the edge part (outer edge part) of the opening flange 28 and a both-sides side part is a chamfering shape.

  As shown in FIGS. 5 and 6, the lower flange 23 (opening flange 28) is configured to be positioned slightly above the bottom wall portion 11. In the present embodiment, the height position and thickness of the opening flange 28 and the lower flange 23 of other parts are the same. Further, an inclined portion 36 is formed at a boundary portion between the upper surface of the bottom wall portion 11 and the upper surface of the opening flange 28. By the inclined portion 36, the upper surface of the bottom wall portion 11 and the upper surface of the opening flange 28 are configured as a substantially continuous surface. The boundary between the upper surface of the bottom wall 11 and the inner surface of the vertical wall 21 has an R shape. Further, the boundary portion (inclined portion 36) between the upper surface of the bottom wall portion 11 and the upper surface of the opening flange 28 may be formed in an R shape.

  Further, as shown in FIGS. 2 and 6B and the like, a pair of left and right positioning projections 37 projecting upward from the upper surface are provided on the distal end side of the opening flange 28 in the extending direction. The positioning protrusions 37 of the present embodiment are provided in the vicinity of both ends in the longitudinal direction of the opening flange 28 adjacent to the tip edge of the opening flange 28. In addition, the inner surface of the positioning protrusion 37 extends in a direction orthogonal to the upper surface of the opening flange 28. In addition, the formation width of the positioning projection 37 in the outer peripheral direction of the box-shaped container 1 (the extending direction of the opening flange 28) is shorter than the extending length of the opening flange 28.

  Further, as shown in FIG. 3 and the like, support ribs 38 extending in a lattice shape are provided on the lower surface of the bottom wall portion 11. As described above, in addition to the lower flange 23 (opening flange 28) being formed slightly above the bottom wall portion 11, the support rib 38 is formed on the lower surface of the bottom wall portion 11 as described above. The lower flange 23 can be spaced above the lower edge of the main body 2. Thus, as shown in FIG. 8, when a plurality of box-shaped containers 1 are stacked, the lower surface of the lower flange 23 of the upper box-shaped container 1 contacts the upper surface of the upper flange 22 of the lower box-shaped container 1. The bottom wall 11 and the support rib 38 of the upper box-shaped container 1 enter the inside of the main body 2 of the lower box-shaped container 1 and are relatively displaced in the horizontal direction. Will be prevented. Accordingly, the box-type containers 1 can be stably stacked.

  The main body 2 is provided with a folded flange 39 extending downward from the tip edge of a portion of the upper flange 22 that extends from the upper edge of the short side wall portion 13. As a handle, the box-shaped container 1 can be lifted and lowered or carried by placing a finger on the return flange 39.

  Next, the door member 4 will be described. As shown in FIG. 1, FIG. 2, etc., the door member 4 includes a substantially plate-like base portion 41 and an outer surface of the base portion 41 along the outer peripheral edge of the base portion 41 (the door member in which the opening 3 is closed). Frame rib 42 extending outward from the surface facing outward in the closed state 4. In the present embodiment, the door member 4 and the opening flange 28 are connected by a flexible thin-film connecting portion 43. Thereby, the door member 4 is provided so that rotation with respect to the main-body part 2 is carried out, and the opening part 3 can be opened and closed by the door member 4. FIG. In particular, in the present embodiment, as shown in FIG. 6 and the like, the connecting portion 43 causes the tip edge (outer edge) of the opening flange 28 and the lower surface of the door member 4 of the frame rib 42 (in the closed state of the door member 4). The edge (outer edge portion) on the front end side in the extending direction from the base portion 41 of the lower side portion 42a constituting the lower surface) is connected. For this reason, in the closed state of the door member 4, the door member 4 can be positioned immediately above the opening flange 28, and the door member 4 can be rotated 180 degrees outward from the closed state. ing. Further, the box-shaped container 1 of the present embodiment is configured so that the door member 4 is opened 90 degrees from the closed state (state shown in FIG. 3) by a mold device (not shown), The door member 4 (excluding the locking part 61 described later) and the connecting portion 43 are integrally formed.

  Further, as shown in FIG. 2 and the like, the opening flange 28 has a shorter extension length than the lower flange 23 of other portions, and the tip edge thereof is a box-shaped container than the tip edge of the lower flange 23 of the opening wall portion 14. 1 is located on the inner peripheral side. Further, with respect to the connecting portion 43 connected to the leading edge of the opening flange 28, the inner side of the box-shaped container 1 is more than the outer edge portion of the opening wall portion 14 (the leading edge of the lower flange 23 and the reinforcing rib 24 of the opening wall portion 14). Located on the circumferential side. Further, the formation width of the lower surface of the door member 4 in the outer peripheral direction of the box-shaped container 1 is substantially the same as the extension length of the lower flange 23. In the present embodiment, even when the door member 4 is opened 180 degrees, the connecting portion 43 is configured to be located on the inner side (the inner peripheral side of the box-shaped container 1) than the outer edge portion of the opening wall portion 14. However, the connection part 43 should just be comprised so that it may be located inside the outer edge part of the opening wall part 14 at least, when the door member 4 exists in a closed state.

  The base portion 41 has a shape corresponding to the opening portion 3, and has a substantially rectangular plate-like first plate portion 44 that can close the opening portion 3, and laterally from both sides of the first plate-like portion 44. A pair of left and right second plate-like portions 45 are provided. The second plate-like portion 45 faces the outer surface of the band plate portion 27 in the closed state of the door member 4 and is in contact with or in close proximity. With this configuration, the tilting displacement of the door member 4 toward the inside of the box-shaped container 1 is prevented, and a gap penetrating in the outer peripheral direction of the box-shaped container 1 is formed between the door member 4 and the peripheral edge of the opening 3. The situation of being formed can be avoided. Further, in the closed state of the door member 4, the second plate-like portion 45 is located slightly on the outer peripheral side of the box-type container 1 with respect to the first plate-like portion 44, and the inner side surface and the belt of the second plate-like portion 45. In a state where the outer surface of the plate portion 27 is in contact, the inner surface of the first plate-like portion 44 and the inner surface of the vertical wall portion 21 of the opening wall portion 14 are configured to be substantially flush with each other. .

  Further, a notch 46 is formed in the lower portion of the second plate-like portion 45 (the boundary portion between the lower side portion and the vertical side portion of the door member 4). As shown in FIGS. 1 and 5A, in the present embodiment, when the door member 4 is closed, the lower surface of the door member 4 in the notch 46 and the upper surface of the placement protrusion 33 are in contact with each other. (Or close proximity). Further, the second plate-like portion 45 is formed with an engagement hole 47 through which the engagement convex portion 34 is inserted when the door member 4 is closed. In addition, a rectangular tubular protective rib 48 is provided so as to surround the engagement hole 47 and project outward from the outer surface of the second plate-like portion 45, thereby increasing the strength of the peripheral edge of the engagement hole 47. It has been.

  Moreover, as shown in FIG. 1 etc., the upper side part 42b which comprises the upper surface of the door member 4 among the frame ribs 42 is flush over the whole longitudinal direction. Furthermore, in the closed state of the door member 4, the upper side portion 42 b of the door member 4 is positioned below the upper flange 22 of the main body portion 2. The upper side (upper surface) of the upper side portion 42b of 4 is covered with the upper flange 22. In addition, among the frame ribs 42, the vertical side portions 42 c constituting both side surfaces of the door member 4 are brought into a close state to the opening rib 26 in the closed state of the door member 4. Thereby, the clearance gap formed between the side surface of the door member 4 and the opening rib 26 is made small as much as possible, and the penetration | invasion of dust etc. from this clearance gap is suppressed.

  Further, as shown in FIGS. 1 and 2, a positioning recess 49 that engages with the positioning projection 37 formed on the opening flange 28 is formed in the lower side portion 42 a of the frame rib 42 when the door member 4 is closed. Has been. The positioning recess 49 is formed on the front edge side of the frame rib 42 and opens outward when the door member 4 is closed. In the present embodiment, the connecting portion 43 is continuously formed from the vicinity of one positioning recess 49 to the vicinity of the other positioning recess 49.

  Further, as shown in FIGS. 1 and 7, a part accommodating portion 51 that accommodates a locking part 61 configured as a separate body from the door member 4 is formed on the outer surface side upper portion of the door member 4. A locking part 61 is provided in the part housing 51 so as to be slidable in the left-right direction. In this embodiment, the locking parts 61 are provided in a pair of left and right, and the locking parts 61 having the same shape are arranged so as to form a symmetrical shape. In addition, the parts accommodating portion 51 is provided with horizontal ribs 52 extending left and right so as to connect the opposite vertical side portions 42 c of the frame rib 42, so that the horizontal rib 52 and the upper side portion 42 b of the frame rib 42 are provided. And a region surrounded by the vertical side portion 42c. Note that there is no step between the leading edge of the horizontal rib 52 in the extending direction from the base portion 41 and the leading edge of the frame rib 42, and they are flush.

  The locking part 61 includes a locking projection 62 that is inserted into an insertion hole 53 formed in the vertical side portion 42c of the frame rib 42 that defines the part accommodating portion 51 (see FIG. 2). In the closed state of the door member 4, the insertion hole 53 and the locking hole 31 formed in the opening rib 26 coincide with each other, and the locking projection 62 is inserted into the locking hole 31 through the insertion hole 53. By doing so, tilting displacement of the door member 4 to the outside is prevented.

  Further, as shown in FIG. 7, the locking part 61 has an operation opening 63 that penetrates in the thickness direction of the door member 4, and the peripheral edge of the operation opening 63 is locked with a finger. The part 61 can be slid. Further, a substantially arrow-shaped urging portion 64 having a pair of upper and lower elastic pieces 65 is provided on the side of the door member 4 in the lateral width direction of the locking part 61, and the elastic piece 65 is an upper side portion of the frame rib 42. The locking part 61 is urged toward the insertion hole 53 side by being pressed against the abutment rib 54 that protrudes from the center in the longitudinal direction of the b and the lateral rib 52 to the inside of the part accommodating part 51.

  Even when the door member 4 is in the open state, the locking part 61 is brought into a state where the locking protrusion 62 protrudes from the insertion hole 53 to the side of the door member 4 by the urging portion 64. However, since the inner side surface of the locking projection 62 (the surface facing the outer side surface of the vertical wall portion 21 in the closed state of the door member 4) is an inclined surface, an operator must close the door member 4 when closing the door member 4. Even without putting the finger on the operation opening 63 and operating the locking part 61, the inclined surface of the locking projection 62 protruding to the side of the vertical side portion 42 c of the frame rib 42 is formed on the outer edge of the opening rib 26. The locked part 61 is retracted inside the door member 4 by being guided, and the door member 4 can be closed as it is.

  The upper and lower surfaces of the locking part 61 are provided with guide ribs 66 projecting upward or downward along the inner peripheral edge of the box-shaped container 1, and the guide ribs 66 are arranged on the upper side of the frame rib 42. 42b and the side rib 52 are inserted into the base 41 side of the guide projection 55 that is formed to protrude from the inside of the part accommodating part 51, so that the locking part 61 can be slid and the locking part 61 is prevented from falling off. . Further, a stopper 67 protruding outward from an intermediate position in the longitudinal direction of the guide rib 66 is provided, and the amount of displacement of the locking part 61 when the locking part 61 is opened to open the door member 4 by the stopper 67 is limited. The elastic piece 65 and the like can be prevented from being destroyed due to the locking part 61 being displaced too much.

  In addition, as shown in FIG. 1 and the like, the leading edge (outer edge) of the frame rib 42 is flush without any step. Further, as shown in FIG. 6A and the like, the thickness of the door member 4 at the portion corresponding to the first plate-shaped portion 44 (the inner surface of the first plate-shaped portion 44 in the outer peripheral direction of the box-shaped container 1 and the frame ribs). 42) is smaller than the thickness of the opening wall 14 (the distance between the inner surface of the vertical wall 21 and the leading edge of the upper flange 22 or the reinforcing rib 24). Further, the locking part 61 is also prevented from projecting to the outer peripheral side of the box-type container 1 from the front edge of the frame rib 42 or the lateral rib 52. That is, as described above, since the leading edge of the opening flange 28 is located closer to the inner peripheral side of the box-shaped container 1 than the leading edge of the lower flange 23 of the opening wall portion 14, in the closed state of the door member 4. The door member 4 as a whole is located on the inner peripheral side of the box-shaped container 1 with respect to the outer edge portion of the opening wall portion 14 (the leading edge of the lower flange 23 and the reinforcing rib 24 of the opening wall portion 14) (see FIG. 1, see FIG.

  As described in detail above, according to the present embodiment, the opening 3 is formed so as to leave both side portions of the one long side wall portion 12. For this reason, the long side wall part 12 and the short side wall part 13 constituting the outer peripheral wall of the main body part 2 extend as a whole in a substantially C shape when viewed from above, and the main body resulting from the formation of the opening 3 The strength reduction of the part 2 can be suppressed. In addition, not only damage or distortion of the main body 2 itself is suppressed, but also the door member 4 in the closed state is reliably supported or protected by the opening wall portions 14 located on both sides, It is possible to suppress damage and distortion of the entire box-shaped container 1 including the door member 4. Therefore, the durability of the box-shaped container 1 can be improved, and the box-shaped container 1 can be prevented from rattling during transportation or when stress is applied. It is possible to suppress a situation in which the articles housed in the box-type container 1 are adversely affected by the rattling (the shape is distorted). As a result, even when an article whose shape tends to collapse is accommodated, the article can be suitably transported and stored.

  Moreover, in this embodiment, the hinge part for providing the door member 4 so that opening and closing is possible is comprised by the thin-film-like connection part 43 which has flexibility, and the main-body part 2, the door member 4, and the connection part 43 are integrated. Is formed. For this reason, for example, compared with the case where the hinge portion is configured by the engaging portion provided in the door member and the engaged portion provided in the main body portion, the configuration is simplified, the mold molding is simplified, and the like. Can be achieved. Furthermore, the work of assembling the door member to the main body can be omitted, and the productivity can be improved. In addition, since the structure of the hinge portion is simple, it is possible to prevent a situation in which dust or the like remains in the hinge portion (connecting portion 43) when the box-shaped container 1 is washed, and more hygienically. A box-type container 1 can be used.

  Furthermore, in this embodiment, the opening flange 28 that divides the lower edge of the opening 3 and is connected to the door member 4 via the connecting portion 43 is merely located slightly above the bottom wall portion 11. There is almost no difference in the height position between the upper surface of the opening flange 28 and the upper surface of the bottom wall portion 11. Accordingly, it is possible to avoid a situation where the article has to be moved so as to get over a relatively large step when the article is put in and out of the box-type container 1 through the opening 3. Moreover, in the present embodiment, the inclined portion 36 is formed at the boundary portion between the upper surface of the opening flange 28 and the upper surface of the bottom wall portion 11. For this reason, the article can be smoothly put in and out through the opening 3 so as to slide on the bottom wall portion 11 and the upper surface of the opening flange 28.

  In addition, since the lower surface of the opening flange 28 is located above the lower edge of the main body 2, the box-shaped containers 1 can be stacked more stably, and the opening flange 28 can be used as a box-shaped container. 1 can be separated upward from the ground contact surface, and the sanitary surface of the article that is taken in and out of the opening 3 and through the opening 3 can be improved. As a result, even when an article (food, etc.) requiring strict hygiene management is accommodated, the article can be suitably transported and stored.

  Moreover, since the connection part 43 has connected the outer edge part of the lower surface of the door member 4 in the closed state, and the outer edge part of the opening flange 28, when the door member 4 is made into a closed state, the door member 4 is settled. (The door member 4 is positioned immediately above the opening flange 28 so that the door member 4 does not protrude outward from the opening flange 28), and space efficiency can be improved. Furthermore, the door member 4 can be opened by rotating 180 degrees. For example, the box-shaped container 1 is placed on a table (or in a state of being stacked above the lower box-shaped container 1). ) When the door member 4 is opened and an article is taken in and out, the worker can work at a position closer to the box-type container 1 and, for example, the worker contacts the door member 4 that opens only about 120 degrees. And the situation where the main-body part 2 turns over can be prevented. Further, when the door member 4 is opened 180 degrees, the upper surface of the opening flange 28, the inner side surface of the connecting portion 43 (exposed upward in the open state), and the lower surface of the door member 4 (upward in the open state). It is possible to suppress a situation in which a relatively large level difference is formed with respect to the box-shaped container 1, and it is possible to more easily carry out the work of putting in / out the article from the opening 3.

  Further, a notch 46 is formed in the lower portion of the second plate-like portion 45 of the door member 4, and the door member in the notch 46 is formed on both sides of the opening flange 28 in the closed state of the door member 4. A mounting protrusion 33 is provided which can be in contact with and supported by the lower surface of 4. Therefore, when a downward force is applied to the door member 4 in the closed state, a relatively large stress acts on the plate-like opening flange 28 and the connecting portion 43 to cause damage. Can be prevented.

  Further, in the opening wall portion 14, the upper flange 22 extends to the edge on the opening portion 3 side of the upper edge portion of the band plate portion 27 that prevents the door member 4 from falling inward. Thus, the strength of the band plate portion 27 can be increased by extending the upper flange 22. Further, the door member 4 in the closed state is configured such that both sides thereof are accommodated below the upper flange 22, and both sides of the door member 4 can be protected by the upper flange 22, and On the other hand, when a force is applied upward, the door member 4 can be supported by the upper flange 22 (upward displacement is restricted), and when the door member 4 is lifted, the connecting portion 43 is pulled up and down. Therefore, it is possible to suppress a situation in which a relatively large load is applied to the connecting portion 43.

  Furthermore, the upper surface of the door member 4 is flush, and the entire upper surface of the door member 4 is positioned below the upper flange 22 of the opening wall portion 14 when the door member 4 is closed. For this reason, it is possible to suppress a situation in which a downward force is applied to the upper surface of the door member 4. In particular, when the box-shaped containers 1 are stacked, it is possible to avoid the upper box-shaped container 1 from contacting the door member 4 of the lower box-shaped container 1. Therefore, damage to the door member 4 and the connecting portion 43 can be prevented. Even when the box-shaped containers 1 are stacked, the door member 4 of the lower box-shaped container 1 can be opened to check or take out the stored articles.

  In the present embodiment, when the door member 4 is in the closed state, the engagement convex portion 34 formed in the opening wall portion 14 is inserted into the engagement hole 47 formed in the door member 4, Thereby, relative displacement in the surface direction of the base portion 41 of the door member 4 with respect to the main body portion 2 can be prevented. Accordingly, the structure in which the upper surface of the door member 4 is supported by the upper flange 22 and the structure in which the lower surface of the notched portion 46 of the door member 4 is supported by the mounting projection 33 and the protection of the connecting portion 43 and the like are more reliably secured. You can plan.

  Further, a positioning projection 37 is provided on the upper surface of the opening flange 28, and when the door member 4 is closed, a positioning recess 49 formed on the lower surface of the door member 4 is engaged with the positioning projection 37. With this configuration, together with the locking part 61, the outward displacement of the door member 4 in the closed state can be regulated, and the door member 4 in the closed state is displaced outward as it is translated. Therefore, it is possible to prevent a situation in which a load is applied to the connecting portion 43. Furthermore, when the door member 4 is closed, the positioning recess 49 is guided by the positioning projection 37, so that the door member 4 can be prevented from being displaced from side to side, and after the door member 4 is closed, The positional deviation of the door member 4 in the left-right direction can be prevented. Therefore, the load on the connecting portion 43 can be reduced.

  Furthermore, in this embodiment, when the door member 4 is in the closed state, the door member 4 and the connecting portion 43 are located on the inner peripheral side of the box-shaped container 1 with respect to the outer edge of the opening wall portion 14. For this reason, the door member 4 and the connecting portion 43 are protruded outward from the outer edges of the box-type container 1 (the outer edges of the upper and lower flanges 22 and 23 and the reinforcing ribs 24). It is possible to prevent a situation in which the door member 4, the connecting portion 43, and the like are easily damaged due to rubbing or pressing 43.

  The box-type container 1 is integrally formed by a mold device so that the door member 4 is opened. However, the connecting portion 43 is connected to the opening flange 28 or the reinforcing rib 24 of the opening wall portion 14. When provided inside the outer edge portion, even if the door member 4 is in an open state, the members are densely arranged in the vicinity of both side portions of the lower surface of the door member 4 connected to the connecting portion 43. It can be very difficult. In other words, it is necessary to make the mold member for molding the portion thin, and the strength of the mold member may not be able to withstand the molding. On the other hand, if the door member 4 is opened by forming notches 46 on both sides of the lower surface of the door member 4 as in this embodiment, both sides and the main body of the lower surface of the door member 4 are formed. Since a gap can be formed between the portion 2 and the portion 2, the box-shaped container 1 can be reliably and relatively easily formed. Furthermore, when the door member 4 is in the closed state, the mounting protrusion 33 on which the notched portion 46 is placed is provided. Therefore, by forming the notched portion 46, the door member 4 is closed. Even in this case, it is possible to prevent a situation in which a gap is formed between the door member 4 and the main body 2 (opening peripheral edge) and dust or the like enters through the gap.

  The reinforcing ribs 24 formed on the opening wall portion 14 are thicker than the reinforcing ribs 24 formed on the other side wall portions 12 and 13. For this reason, the intensity | strength of the opening wall part 14 located in the both sides of the opening part 3 can be raised, and the shape maintenance of the main-body part 2 and by extension, the shape maintenance of an opening peripheral part can be aimed at. Therefore, it is possible to prevent a situation in which the opening 3 cannot be closed properly by the door member 4 due to distortion of the main body 2 or the like.

  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, although the opening part 3 is formed corresponding to one among a pair of long side wall part 12, the side wall parts 12 and 13 in which the opening part 3 is formed are specifically limited. Instead, for example, it may be formed in the short side wall portion 13, or the opening 3 may be formed in both the pair of long side wall portions 12. However, on both sides of the door member 4, there is always a fixed side wall portion integrally extending from the bottom wall portion 11 (for example, the opening 3 in the long side wall portion 12 and the short side wall portion 13. Is formed such that a fixed side wall portion having a substantially L-shaped cross section is extended and formed at the long side portion, the short side portion, and the corner portion of the bottom wall portion 11.

  In the above embodiment, the upper surface of the opening flange 28 is positioned slightly above the upper surface of the bottom wall portion 11, but the upper surface of the bottom wall portion 11 and the upper surface of the opening flange 28 may be flush with each other. Furthermore, in order to increase the strength of the opening flange 28, both side portions of the opening flange 28 may be connected to the mounting protrusion 33, or reinforcing ribs may be provided on the lower surface side of the opening flange 28.

  (B) In the above embodiment, the positioning projection 37 is provided on the upper surface of the opening flange 28, and the positioning recess 49 that engages with the positioning projection 37 in the closed state is formed on the lower side portion 42a of the door member 4. The configuration may be omitted. However, in the above-described embodiment, the locking part 61 is provided on the upper portion of the door member 4, and the locking projection 62 is locked to the opening rib 26 (the peripheral edge of the locking hole 31) on the main body 2 side. Are also provided one by one on the left and right, so that when the lower part of the door member 4 in the closed state is pressed from the inside of the door member 4 to the outside, the displacement of the lower part of the door member 4 to the outside can be regulated. It is desirable to have a configuration. For example, in the above-described embodiment, the locking projections 62 of the pair of left and right locking parts 61 are each provided with a plurality (e.g., two) of the locking projections 62, or the vertical width of the locking projections 62 is increased. It is good also as comprising so that rotation of the door member 4 in this may be controlled reliably. In addition, when the said structure is employ | adopted and the positioning protrusion 37 grade | etc., Is omitted, while being able to prevent the displacement to the outer side of the door member 4 in a closed state, in the state which opened the door member 4 180 degree | times, the opening part 3 The surface which consists of the opening flange 28, the connection part 43, and the door member 4 which extend outside from the lower edge part can be made into a substantially smooth surface. However, the positioning protrusions 37 and the positioning recesses 49 also have an effect of preventing displacement in the left-right direction while the door member 4 is being closed or after the door member 4 is closed, so that the configuration is prevented from becoming complicated. However, from the viewpoint of protecting the connecting portion 43, it is desirable to provide the positioning protrusion 37 and the positioning recess 49.

  (C) In the above embodiment, the folding flange 39 that constitutes the handle corresponding to the short side wall 13 is provided, while the door 4 and the long side wall 12 facing the door 4 are particularly Although the handle is not provided, the door member 4 and the long side wall portion 12 may be provided with a handle. However, as in the above embodiment, the handle is provided on the short side wall portion 13 that integrally extends from the bottom wall portion 11 and is not displaced relative to the bottom wall portion 11. Compared to a case where a handle is provided on a side wall portion that can be pivotally displaced with respect to the bottom wall portion, such as a foldable box type container, it is possible to suppress rattling of the box type container 1 during transportation and the like. it can. Furthermore, in the said embodiment, since the handle is not formed in the door member 4, the situation where the door member 4 is held at the time of conveyance etc. can be suppressed. Accordingly, it is possible to suppress rattling or the like of the box-shaped container 1 when the box-shaped container 1 is held, and also to maintain a closed state of the door member 4 (engagement projections 34 and engagement holes). 47) and the like, the damage of the connecting portion 43, and the like.

  (D) In the above embodiment, a flexible thin film-like seal lip is provided on the lower surface (lower side portion 42 a) of the door member 4, and the seal lip is the upper surface of the lower flange 23 in the closed state of the door member 4. You may comprise so that it may contact. In the case of adopting this configuration, in order to prevent the lower flange 23 from being damaged more reliably, when the door member 4 is in the closed state, the lower surface of the door member 4 and the mounting projection 33 in the notch 46 are in contact with each other vertically. Even when the door member 4 and the lower flange 23 are configured not to contact each other (a gap is set), the gap between the lower surface of the door member 4 and the lower flange 23 is sealed by the seal lip. Thus, it is possible to more reliably prevent a situation where dust or the like enters the inside of the box-type container 1 from between the lower surface of the door member 4 and the lower flange 23.

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

  DESCRIPTION OF SYMBOLS 1 ... Box-shaped container, 2 ... Main-body part, 3 ... Opening part, 4 ... Door member, 11 ... Bottom wall part, 12 ... Long side wall part, 13 ... Short side wall part, 14 ... Opening wall part, 21 ... Vertical Wall part, 22 ... Upper flange, 23 ... Lower flange, 24 ... Reinforcement rib, 26 ... Opening rib, 27 ... Strip plate part, 28 ... Opening flange, 33 ... Mounting protrusion, 43 ... Connection part, 46 ... Notch Department.

Claims (8)

A substantially rectangular plate-like bottom wall,
A side wall portion integrally extending upward from each side portion of the bottom wall portion,
In at least one side wall, an opening that penetrates in the thickness direction of the side wall is formed so as to leave both sides of the side wall, and a door member that can open and close the opening is provided,
The door member is rotatably connected to a lower edge portion of an opening peripheral edge portion defining the opening portion through a flexible thin film-like connecting portion, and is closed with the opening portion closed. Configured to be open to the outside from the state,
The box-shaped container, wherein the bottom wall portion, the side wall portion, the connecting portion, and the door member are integrally formed by molding.   The lower edge part of the opening peripheral edge part that defines the opening part is formed to extend from the outer peripheral edge of the bottom wall part to the outer peripheral side of the bottom wall part continuously or substantially continuously with the upper surface of the bottom wall part. The box-shaped container according to claim 1, wherein the box-shaped container is constituted by a plate-like lower flange. In the door member, a notch is formed at both ends of the side connected to the connecting part,
The both sides of the lower flange are provided with mounting protrusions that can be in contact with and supported by the lower surface of the door member at the notch when the door member is closed. The box-type container according to 1 or 2. Each side wall includes a vertical wall extending upward from a side portion of the bottom wall, an upper flange extending outward from an upper edge of the vertical wall, and a lower edge of the vertical wall A lower flange that extends outward from the vertical wall along the portion, and a reinforcing rib that connects between the upper and lower flanges,
With respect to the side wall portion in which the opening is formed, at least a pair of the reinforcing ribs are provided so as to face each other with the opening interposed therebetween, and the vertical wall portion extends to the opening side of the reinforcing rib. The upper flange extends to the edge on the opening side of the upper edge of the vertical wall,
The door member in the closed state is characterized in that the inner side surface on both sides is in contact with or close to the outer side surface of the vertical wall, and the upper side portion on both sides is covered with the upper flange. The box-shaped container according to any one of claims 1 to 3.   The box-shaped container according to any one of claims 1 to 4, wherein, in the closed state of the door member, the connecting portion is disposed on an inner side than an outer edge portion of the side wall portion.   The box-shaped container according to any one of claims 1 to 5, wherein the door member in the closed state is disposed entirely inside an outer edge portion of the side wall portion.   The box-shaped container according to any one of claims 1 to 6, wherein the upper side portion of the door member in the closed state is positioned below the upper side portion of the side wall portion. Each side wall includes a vertical wall extending upward from a side portion of the bottom wall, an upper flange extending outward from an upper edge of the vertical wall, and a lower edge of the vertical wall A lower flange that extends outward from the portion, and a reinforcing rib that connects between the upper and lower flanges,
Of the reinforcing ribs formed on the side wall portions located on both sides of the opening portion, at least a pair of reinforcing ribs facing each other with the opening portion interposed therebetween is more than the reinforcing ribs formed on the other side wall portions. The box-shaped container according to any one of claims 1 to 7, wherein the box-shaped container is also thick.

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