JPH10316136A - Container for transportation - Google Patents

Abstract

PROBLEM TO BE SOLVED: To smoothly propagate the load of an upper container main body to a lower container main body and to prevent the dislocation in the longitudinal direction of the container main bodies as to container main bodies fitted vertically in a stacked condition. SOLUTION: A fitting recess 7 is formed near the pocket 5 formation part of a long side flange part 2, and a fitting protrusion which fits with the fitting recess 7 in a condition in which two container main bodies 1 are stacked in the same direction is provided at the end of the protrusion tip end side of the lower face of a support leg. The lower face of the support leg is placed at the top end of the inner protrusion constituting the inner side wall of the fitting recess 7 in a condition in which the fitting protrusion is fitted with the fitting recess 7. At least on one side of both sides of the lower face of the support leg, a protrusion for preventing dislocation in the longitudinal direction fitting with the side face in a direction parallel to the longitudinal direction of the long side flange part 2 of the inner protrusion is provided.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a transporting container, and more particularly, to stacking and stacking a plurality of container bodies and, in a state where the contents are stored, a stacking device for storing the contents tall and storing the contents. The present invention relates to a transport container that can be nested in a state where the height is short in a state where it is not provided.

[0002]

2. Description of the Related Art Conventionally, when stacking or stacking a plurality of container bodies, stacking is performed by raising the height when the contents are stored and stacking by lowering the height when the contents are not stored. A possible transport container is known from Japanese Utility Model Laid-Open Publication No. 6-80636.

[0003] This transport container is as shown in FIG. 22, in which a container body 1, which constitutes a main body of a transport container 6, has a rectangular shape in plan view with an open top.
A flange 2 is formed on the outer periphery of the upper opening.
Support legs 4 protruding from the outer surface of the side wall portion are provided at lower portions near both ends of the outer surface portion of both long side walls on the long side of the container body 1.
Is provided. On the other hand, the long side flange portion 2 is formed with a pocket portion 5 into which a support leg 4 formed point symmetrically can be fitted on a side wall portion facing the flange portion 2. And
In a state where the two container bodies 1 are stacked in the same direction, the lower ends of the support legs 4 are placed on the flange portions 2 of the lower container body 1, and are rotated by 180 ° in plan view with respect to the lower container body 1. When the upper container body 1 is stacked, the support legs 4 of the upper container body 1 are immersed in the pocket portions 5 of the lower container body 1.

[0004] In order to stack the transport container 6 having the above configuration in an empty state in which contents are not put (that is, to make it a nesting state), as described above, the transport container 6 is placed on the lower container body 1. By rotating the upper container body 1 by 180 ° in plan view and stacking it, the support legs 4 of the upper container body 1 are immersed in the pocket portions 5 of the lower container body 1 so that the height is lowered and the upper container body 1 is stacked in multiple layers. is there.

On the other hand, when the contents are put into the container main body 1 and stacked up and down in multiple stages, the lower end of the support leg 4 is placed on the flange 2 of the lower container main body 1 as described above, and the back is placed. They are raised and stacked in a stacking state. However, as described above, when the container main bodies 1 containing the contents are stacked in multiple stages vertically, if the weight of the contents is heavy, the bottom surface of the container main body 1 bends downward so that the center portion is downward,
As a result, the opening width of the upper opening of the container body 1 tends to be reduced, and the upper container body 1 does not easily fall into the lower container body 1. However, since the bottom surface of the lowermost container body 1 is in contact with the flat ground or a flat installation surface such as a pallet, the bottom surface does not bend and the upper opening of the container body 1 expands outward due to a load from above. Deform in the direction
There is a problem that the upper container body 1 is easily dropped.

For this reason, in the above-mentioned conventional example, FIG.
As shown in FIG. 2, a long groove 7 'is formed along the long side on the upper surface of the flange 2 on the long side, and an engagement protrusion 8 is protruded from the lower end of the support leg 4. The support legs 4 of the upper container body 1 containing the contents are placed on the flange portion 2 and the engaging projections 8 are fitted into the groove portions 7 ′ so that the upper ends of the opposing side walls of the lower container body 1 are inserted. The container body 1 containing the contents is stacked in the same orientation as the lower container body 1 as described above,
When the upper container body 1 is taken out in the stacked state, the lower end of the support leg 4 of the upper container body 1 is slid on the flange portion 2 of the lower container body 1. 8 is slid in the long groove 7 '.

[0007]

However, the container body 1
Is formed of a synthetic resin, and when molded with a synthetic resin, the upper opening side of the container body 1 is deformed so as to be depressed inward or wavy due to shrinkage during curing. There is a tendency. In the case where the pocket portions 5 are provided at both ends of the flange portion 2, since the width of the flange portion 2 is different between the pocket portions 5, the pocket portion 5 becomes a starting point of deformation and shrinks when the pocket portion 5 is hardened. The lower end of the support leg 4 is placed on the flange 2 of the lower container body 1 when the two container bodies 1 are stacked in the same direction as described above. When the upper container body 1 is rotated by 180 ° in plan view with respect to the lower container body 1 and the upper container body 1 is overlaid, the support leg 4 of the upper container body 1 is immersed in the pocket portion 5 of the lower container body 1. In such a configuration, the positions of the pockets 5 provided on both sides of the long side are not symmetrical, and the widths of the pockets 5 are different.
In the case where the flange portion 2 is deformed due to shrinkage at the time of hardening, it may be deformed, for example, as shown by the imaginary line in FIG.

Since the flange 2 is irregularly deformed in an arc shape or meandering shape, the groove 7 'formed parallel to the long side of the flange 2 is also irregularly deformed. When the protrusion 8 is fitted into the groove 7 'and slid, the engaging protrusion 8 bites into the meandering or curved groove 7' and is difficult to slide or cannot slide. There is a problem that a situation arises.

Conventionally, when the container bodies are stacked up and down in a stacking state, the engaging projection 8 moves within the groove 7 'in the longitudinal direction of the groove 7'. This is free, and there is a problem that the container body fitted vertically in the stacking state is likely to be displaced in the longitudinal direction of the container body. Further, in the related art, since the engaging projection 8 is provided only at the end of the lower surface of the support leg 4 on the protruding tip side, this part is damaged when an impact acts on the engaging projection 8. There is a problem that it is easy to do.

[0010] The present invention has been made in view of the above-mentioned problems of the prior art, and in the invention in which nesting stacking and stacking stacking can be selectively performed. Can be prevented from spreading between the upper openings of the lower container main body when stacked in the same direction, and the lower end of the support leg of the upper container main body is slid on the flange of the lower container main body. An object of the present invention is to provide a transport container that can be slid smoothly at the time, and in which a container body fitted vertically in a stacking state is unlikely to be displaced in the longitudinal direction of the container body.

[0011]

In order to solve the problems of the prior art and achieve the object of the present invention, a transport container according to the present invention comprises a container body 1 having an upper opening and a rectangular shape in plan view.
A flange 2 is formed on the outer periphery of the upper opening, and support legs 4 projecting from the outer surface of the side wall 3 are provided at lower portions near both ends of the outer surface of both side walls 3 on the long side. A pocket portion 5 is formed in the side flange portion 2 on the side of the side so that a support leg 4 formed symmetrically with respect to the side wall portion 3 can be fitted thereto. The lower end portion of the support leg 4 is placed on the flange portion 2 of the container main body 1 of FIG. 1, and the lower container main body 1 is rotated by 180 ° in plan view with respect to the lower container main body 1 and the upper container main body 1 is stacked. A transport container 6 configured such that the support leg 4 of the upper container body 1 is immersed in one pocket portion 5, and engages in the vicinity of the pocket portion 5 forming portion of the flange portion 2 on the long side. With the recess 7 formed and the two container bodies 1 stacked in the same direction An engagement protrusion 8 for engaging with the engagement recess 7 is provided at an end of the lower surface of the support leg 4 on the protruding tip side, and the engagement is performed in a state where the engagement protrusion 8 is engaged with the engagement recess 7. The lower surface of the support leg 4 is placed on the upper end of the inner protrusion 30 constituting the inner wall of the recess 7, and the long side of the inner protrusion 30 is provided on at least one side of both sides of the lower surface of the support leg 4. A longitudinally-shift-preventing projection 31 that engages with a side surface of the side flange portion 2 in a direction parallel to the longitudinal direction is provided. By adopting such a configuration, when the contents are put in the container main body 1 and the container main bodies 1 are stacked in the same direction,
The engagement projection 8 at the lower end of the support leg 4 of the upper container body 1 engages with the engagement recess 7 provided in the flange portion 2 of the lower container body 1 to open the upper opening of the lower container body 1. The part is prevented from spreading. Since the engagement recess 7 is provided only near the portion where the pocket portion 5 of the flange portion 2 on the long side is formed, the support leg 4 is used to stack the lower container body 1 when the upper container body 1 is stacked. When sliding on the flange portion 2, the engaging projection 8 is not engaged with the engaging recess 7, and the portion of the flange portion 2 without the engaging recess 7 is slid. As a result, even if the flange portion 2 is wavy or curved, there is no problem in sliding. Further, in a state where the engagement projection 8 is engaged with the engagement recess 7, the inner projection 30 forming the inner wall of the engagement recess 7 is formed.
The lower surface of the support leg 4 is placed on the upper end of the container body 1, so that the side wall portion on the long side of the lower container body 1 from the lower surface of the projecting base portion of the support leg 4 from the upper container body 1 in the stacking state. 3a, the load is smoothly transmitted, and at least one of the both sides of the lower surface of the support leg 4 has a flange on the long side of the inner protrusion 30. By providing the projection 31 for preventing displacement in the longitudinal direction, which engages with a side surface portion of the portion 2 in a direction parallel to the longitudinal direction, the container main body vertically fitted in the stacking state can be positioned with respect to the longitudinal direction of the container main body. It will be possible to prevent deviation.

[0012]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described below in detail based on embodiments shown in the accompanying drawings. 1, 2, 3, 4, and 5 show a plan view, a front view, a rear view, a right side view, and a left side view, respectively, showing the whole of the present invention. Support legs 4 are formed at lower portions near both sides of the outer surface of one long side wall portion 3a of the long side wall portion 3 of the container body 1. Here, one of the support legs 4a on both sides is narrower in width than the other support leg 4b.

Further, on the upper side of the other side wall portion 3b on the long side, the support legs 4a and 4b are supported by the support legs 4a and 4b and the point symmetrical positions with respect to the center point O (shown in FIG. A pocket portion 5 into which the legs 4a and 4b can be inserted (a pocket portion 5a into which the support leg 4a can be inserted and a pocket portion 5b into which the support leg 4b can be inserted) is formed.

Similarly, supporting legs 4a and 4b are formed at lower portions near both sides of the other side wall portion 3b on the long side, and the supporting legs 4a and 4b are formed on the upper portion of one side wall portion 3a on the long side. A pocket portion 5a into which the support legs 4a, 4b can fit;
5b are support legs 4a around a center point O of the container body 1,
4b and a point symmetrical position. Support legs 4c, 4c are formed to protrude at lower portions near both sides of the outer surface of one short side wall portion 3c of the short side wall portions 3, respectively.

On the upper side of the other side wall 3d on the short side, support legs 4 centered on the center point O of the container body 1 in plan view.
Pocket portions 5c into which the support legs 4c, 4c can be respectively fitted are formed at the positions of c, 4c and the point target, respectively. Similarly, support legs 4d and 4d are formed at lower portions near both sides of the other side wall portion 3d on the short side, respectively, and the support legs 4d and 4d are formed on the upper portion of one side wall 3a on the short side.
The pocket portions 5d and 5d into which the 4d can be fitted are formed at point-wise positions around the center point O of the container body 1 in plan view.

Here, the distance between the support legs 4c, 4c is set to be different from the distance between the support legs 4d, 4d. For example, the transport container 6 having the above-described configuration is to be stacked tall as shown in FIG. 9 by sliding the bottom of the upper transport container 6 on the lower transport container 6 (so-called stacking). When the upper transport container 6 is slid on the lower transport container 6 in a state where the upper transport container 6 is rotated by 180 ° in a plan view, the support legs 4a, 4b, 4a, 4b and supporting legs 4c,
4c, 4d, and 4d are respectively connected to the pocket portions 5a, 5b, 5a, 5b and the pocket portions 5c, 5c of the lower transport container 6.
c, 5d, and 5d, so that the height is lowered as shown in FIG. 10 to prevent the bulk from being piled up (so-called nesting).

Here, in the present invention, as shown in FIG. 1, an engaging recess 7 is formed in the vicinity of the pocket portion 5 forming portion of the flange portion 2 on the long side. Here, the engaging recess 7 is provided at the position of the flange 2 on the long side corresponding to just above the support leg 4, and the engaging recess 7 is provided at one end in the longitudinal direction of the flange 2 on the long side. Part is adjacent pocket part 5a or 5
The other end of the engaging recess 7 is a guiding inclined surface 20 which communicates with the upper end opening of b. In the embodiment shown in FIGS. 8 and 20, the inner projection 30 constituting the inner wall of the engagement recess 7 is a side end of the engagement recess 7 in a direction parallel to the longitudinal direction of the flange portion 2 on the long side. A gap is formed between the portion and the side end of the inner protrusion 30.

On the other hand, the projecting ends of the lower surfaces of the supporting legs 4a, 4b provided on the long side walls 3a, 3b are provided with the engaging recesses 7 with the two container bodies 1 stacked in the same direction. The engagement projection 8 which engages with the boss is vertically provided downward. Further, a projection 31 for preventing displacement in the longitudinal direction is provided on at least one side of both sides of the lower surface of the support leg 4. FIG.
(A), (b), and (c) show examples in which longitudinal displacement prevention protrusions 31 are provided on both sides of the lower surface of the support leg 4, and in FIG. 4 shows an example in which a protrusion 31 for preventing displacement in the longitudinal direction is provided only on one side of the lower surface of the base member 4. Here, the engagement projection 8 and the projection 31 for preventing displacement in the longitudinal direction are integrally continuous with each other.
(A), (b) and (c) are continuous in a substantially U-shape in plan view, and in FIG. 19 (d), they are continuous in a substantially L-shape in plan view.

The upwardly projecting length of the inner projection 30 is longer than the downwardly projecting length of the engaging projection 8 and the downwardly descending length of the longitudinally shifting preventing projection 31. However, when the contents are stored in the container body 1 in a vertically stacked manner, the flange portion 2 of the lower container body 1 may be used.
When the lower ends (engagement projections 8) of the support legs 4a, 4b of the upper container body 1 are placed on the top of the container body, and the engagement projections 8 are engaged with the engagement recesses 7 facing each other. By stopping the slide with, it is possible to stack up and down in a stacking state. In this stacking state, the engagement projection 8 engages with the engagement recess 7, thereby preventing the upper opening of the lower container main body 1 from becoming wide due to the load from the upper container main body 1. Things.

Here, the container body 1 is formed of a synthetic resin, and the shrinkage during the molding and hardening causes the flange portion 2 provided at the upper opening of the container body 1 to be easily deformed.
Since the pockets 5a and 5b are deformed with the shrinkage at the time of molding hardening, the engagement recesses 7 are provided near the pockets 5a and 5b, which are the starting points of the deformation, so that the deformation of the flange 2 can be achieved. Thus, the deformation of the engaging recess 7 due to is minimized, so that the engaging projection 8 can be securely engaged with the engaging recess 7 in the stacking state.

On the other hand, when sliding with the lower ends (engaging projections 8) of the support legs 4a and 4b of the upper container body 1 placed on the flange portion 2 of the lower container body 1, a conventional method is used. The engaging protrusion 8 is fitted into the flange 2 over the longitudinal direction, and a groove for guiding the engaging protrusion 8 is not formed. The lower end surface of the engaging protrusion 8 is formed on the flat surface of the flange 2 of the lower container body 1. Since the slide is performed, the slide operation can be performed without any trouble.

Here, when fitting into the engaging recess 7 from the flat surface of the flange portion 2, the engaging projection 8 slides over the inclined surface 20 and engages from the engaging recess 7. When pulling out the protrusion 8 and riding on the flat surface of the flange portion 2 to take out, the upper container body 1 is pulled in the longitudinal direction.
The engaging protrusion 8 slides on the inclined surface 20 and rides on the flat surface of the flange portion 2 so that it can be pulled out. Release and pull-out operation can be performed smoothly.

FIG. 8A shows the lower container body 1.
FIG. 8 (b) is a cross-sectional view of a portion where the engaging projection 8 and the engaging recess 7 are engaged when the upper container bodies 1 are stacked in a stacking state. FIG. 8C is a side cross-sectional view showing the engagement between the longitudinal deviation preventing projection and the inner projection in the state. FIG. 8C shows the engagement between the longitudinal deviation preventing projection and the inner projection in the stacking state. The front sectional view shown is shown. This FIG.
As shown in the figure, the engaging projection 8 hanging from the projecting tip of the lower end face of the support leg 4a, 4b is engaged with the inner projection 30 forming the inner wall of the engaging recess 7, and the upper surface of the inner projection 30 is formed. Are in contact with the lower surface of the support leg 4. For this reason, in the stacking state, the load from the upper container
, The load can be smoothly transmitted to the side wall 3 a directly below the inner protrusion 30. Here, the lower surface of the engagement protrusion 8 may be in contact with the bottom surface of the engagement recess 7, or the lower surface of the engagement protrusion 8 may slightly float from the bottom surface of the engagement recess 7. In consideration of errors in molding, errors due to shrinkage or the like after molding, etc., the upwardly projecting length of the inner projection 30 is determined by the downwardly projecting length of the engagement projection 8 and the longitudinally-shift preventing projection 31. , The upper surface of the inner projection 30 abuts on the lower surface of the leg 4 and the lower surface of the engaging projection 8 contacts the lower surface of the engaging recess 7 when actually manufactured. It is difficult to make contact between the upper surface of the inner projection 30 and the lower surface of the support leg 4 only because the lower surface of the engagement protrusion 8 abuts on the bottom surface of the engagement recess 7 due to the above error. A gap is created, and the load from the upper stage is applied to the bottom surface of the engaging recess 7 formed in the flange 2 and Part 2 is deformed, there is a possibility that the engagement of the engagement projection 8 and the engaging recesses 7 is disengaged. Considering this,
The length of the upward protrusion of the inner protrusion 30 is designed to be longer than the downward droop length of the engaging projection 8 and the downward droop length of the longitudinal deviation preventing protrusion 31 as shown in FIG. When stacked in a stacking state, the upper surface of the inner projection 30 is
It can be said that it is preferable that the lower surface of the engaging projection 8 be slightly raised from the bottom of the engaging recess 7 while being in contact with the lower surface of the engaging projection 8.

In order to reliably form the upper surface of the inner projection 30 on the lower surface of the support leg 4, a portion of the mold in which the inner projection 30 is formed is formed so as to protrude in advance. In the meantime, while performing test molding,
It is checked whether or not the upper surface of the inner protrusion 30 is securely placed on the lower surface of the support leg 4, and the upper surface of the inner protrusion 30 comes into contact with the lower surface of the leg portion 4 and the lower surface of the engaging protrusion 8 is engaged. If it does not slightly float from the bottom surface of the recess 7, the protruding tip of the forming portion of the inner projection 30 of this mold is shaved, and further subjected to test molding to check that the upper surface of the inner projection 30 is a leg portion. If the lower surface of the engaging projection 8 is not slightly lifted from the bottom surface of the engaging recess 7, the inner projection 3
The process of repeatedly shaving the protruding tip portion of the formation portion of No. 0, performing test molding and checking, repeatedly ensures that the upper surface of the inner protrusion 30 abuts the lower surface portion of the leg 4 and the engaging protrusion 8 Is slightly lifted from the bottom surface of the engagement recess 7. Here, the forming portion of the inner projection 30 of the mold is formed in advance so as to protrude extra, and by shaving it, the mold can be adjusted, and adjustment during molding can be easily performed. is there.

Further, in the stacking state, the projection 31 for preventing displacement in the longitudinal direction is engaged with the side surface of the inner projection 30 in the direction parallel to the longitudinal direction of the flange portion 2, so that the upper container body 1 is connected to the lower container. The main body 1 is not shifted with respect to the longitudinal direction. Here, when the protrusions 31 for preventing longitudinal displacement are provided on both sides of the lower surface of the support leg 4, the protrusions 31 for preventing longitudinal displacement on both sides are respectively engaged with both side surfaces of the inner protrusion 30. In the stacking state, the container body 1 fitted vertically does not further shift in the longitudinal direction of the container body 1.

Also, both side portions of the inner projection 30 are shown in FIG.
(A), FIG. 20 (a), FIG. 20 (b), a trapezoidal shape or a triangular shape in which both side surfaces are inclined, or a semicircular shape of the inner protrusion 30 as shown in FIG. 20 (c). Or
Alternatively, when the inner protrusion 30 is formed in a hemispherical shape as shown in FIG. 20D, the protrusion 31 for preventing displacement in the longitudinal direction enters the engaging recess 7, climbs over the inner protrusion 30, and contacts the side surface of the inner protrusion 30. In locking the projection 31 for preventing displacement in the longitudinal direction, the projection 31 for preventing displacement in the longitudinal direction is smoothly slid on the inclined surface 30a of the side surface of the inner projection 30.
0, it can be locked on the side surface on the opposite side of the inner projection 30, and also when the engagement is released and pulled out, it can be pulled out smoothly. Here, the outer corner portion formed by the side surface and the lower surface of the projection 31 for preventing displacement in the longitudinal direction is a linearly inclined surface as shown in FIGS. 19B and 19D, or FIG. ), The projection 31 for preventing displacement in the longitudinal direction enters the engaging recess 7 and rides over the inner projection 30 to prevent the side face of the inner projection 30 from being displaced in the longitudinal direction. Projection 3
At the time of locking the projection 1, the inclined surface 31 a of the corner portion of the projection 31 for preventing displacement in the longitudinal direction slides on the side surface of the inner projection 30, and the projection 31 for preventing longitudinal displacement smoothly rides over the inner projection 30. It can be locked to the side surface on the opposite side of the inner projection 30, and can be smoothly pulled out when the engagement is released. Of course, the inner projection 30 may be trapezoidal, semicircular, or hemispherical as described above to form the inclined surface 3.
It is also possible to adopt both the provision of 0 and the provision of an inclined surface 31a in an outer corner portion formed by the side surface and the lower surface of the projection 31 for preventing displacement in the longitudinal direction.

Further, as shown in FIGS. 20 (f) and 20 (g), when a rib portion 32 is provided on the inner protrusion 30 to form a U-shape in plan view,
The strength of the inner protrusion 30 is improved, and the area for mounting and supporting the lower end surface of the support leg 4 is increased, so that the load from above can be more reliably supported and smoothly propagated to the side wall 3a side. By the way, in the vicinity of the pockets 5c and 5d of the flange portion 2 on the short side of the container body 1, the container body 1 is raised in the same direction (that is, in a stacking state) on the short side of the upper container body 1. A concave groove 9 into which the lower ends of the support legs 4c and 4d are fitted is provided.

The groove 9 is open at the upper side and the inner side as shown in FIGS. 17 and 18. In the embodiment shown in FIGS. 17 and 18, the inner end of the groove 9 faces upward. Small projection 25 is protruded. The corner formed by the outside of the lower end of the support leg 4c, 4d on the short side and the bottom surface is inclined 10
It has become. The inclined surface 10 may be linearly inclined or arcuately inclined.

FIG. 21 shows each example of the small projection 25. Further, in the container body 1 provided with the small projections 25, a depression 27 into which the small projections 25 are fitted is provided on the lower surface of the support legs 4c and 4d on the short sides as shown in FIGS. Here, in order to put the container body 1 in a nesting or stacking state, the support legs 4a and 4b on the long side of the upper container body 1 are placed on the flange 2 on the long side of the lower container body 1. In this case, when one of the short sides of the upper container body 1 is slightly lifted up and then slid, the support legs 4 on the other short side are slid.
Although the inclined surface 10 of c or 4d hits the upper end of the side wall 3c or 3d on the short side of the lower container body 1, the lower end of the support leg 4c or 4d is smoothly guided by the inclined surface 10. 9. Support leg 4c
Alternatively, the lower surface of 4d contacts the bottom surface of the concave groove 9 to support the load from the upper container body 1. When the small projections 25 are provided, the small projections 25 are
7, the upper opening of the lower container main body 1 expands in the longitudinal direction, so that the support legs 4c or 4d can be prevented from dropping. Here, the small projections 25 are shown in FIG.
(B), (c), (d), (f), etc.
Is provided, not only the inclined surface 10 but also the inclined surface 26 can serve as a guide so that the small projection 25 can be passed over smoothly. 21 (e), (g),
When the ribs 25a are provided on the small projections 25 to form a U-shape in plan view as in (f) and the like, the strength of the small projections 25 is improved.

[0030]

According to the present invention, as described above, in the container body in which nesting stacking and stacking stacking can be selected, engagement is made in the vicinity of the pocket forming portion of the flange portion on the long side. An engaging projection is formed at the lower end of the support leg to form the recess and engage the engaging recess in a state where the two container bodies are stacked in the same direction. When the container bodies are stacked in the same direction, the engagement between the engagement projections and the engagement recesses prevents the upper container body of the lower container body from spreading between the upper openings, and the upper container body is the lower container. It can be prevented from falling into the main body, and when the container body is molded and hardened with synthetic resin, it shrinks and the flange provided at the upper opening of the container body tries to deform from the pocket as a starting point. Place near the pocket. Since the small amount of deformation, which the engagement between the engaging projection and the engaging recess can reliably, moreover,
Since there is no engaging recess at the portion where the amount of deformation is the largest on the long side of the flange, the lower end of the support leg of the upper container body is placed on the flange of the lower container body and slides. It can be slid smoothly without being disturbed by the recess. Further, an engagement recess is formed near the pocket forming portion of the flange portion on the long side, and the two container bodies are the same. An engaging projection that engages with the engaging recess in a state of being stacked in the orientation is provided at an end of the lower surface of the support leg on the protruding tip side, and the engaging projection is engaged with the engaging recess. Since the lower surface of the support leg is placed on the upper end of the inner projection constituting the inner wall of the engagement recess, the lower leg of the support leg protruding from the upper container body in the stacking state is lower than the lower leg of the support leg. Propagated to the long side wall of the container body, As a result, the engagement concave portion provided on the flange portion is deformed by the load from above, and the engagement between the engagement protrusion and the engagement concave portion may be disengaged. In addition, at least one of the two side surfaces of the lower surface of the support leg is prevented from engaging in the longitudinal direction in which the side surface in the direction parallel to the longitudinal direction of the flange portion on the long side of the inner protrusion is engaged. By having a projecting part,
In the stacking state, the container body fitted vertically can be prevented from shifting with respect to the longitudinal direction of the container body.

[Brief description of the drawings]

FIG. 1 is a plan view of the present invention.

FIG. 2 is a front view of the same.

FIG. 3 is a rear view of the above.

FIG. 4 is a right side view of the same.

FIG. 5 is a left side view of the same.

FIG. 6 is a cross-sectional view of a pocket portion on a long side of the container body.

FIG. 7 (a) shows a state in which an engaging projection provided at the lower end of the support leg on the long side of the upper container body is placed on the flange on the long side of the lower container body and is slid. FIG. 2B is a schematic perspective view of a state in which the support legs are on the long side, as viewed from below.

FIG. 8A is a cross-sectional view of a portion in which the engaging projection is engaged with the engaging recess in the stacking state of the above.
(B) is a side sectional view showing the engagement between the projection for preventing displacement in the longitudinal direction and the inner projection in the stacking state,
(C) is a front sectional view showing the engagement between the projection for preventing displacement in the longitudinal direction and the inner projection in the stacking state.

FIG. 9 is a front view of the same stacking state.

FIG. 10 is a front view of the nesting state of the above.

FIG. 11 is a sectional view of a concave groove portion on the short side of the container body.

FIG. 12 is a sectional view of a pocket portion on the short side of the container body.

FIG. 13 is an enlarged sectional view of a concave groove portion according to the third embodiment.

FIG. 14 is an enlarged sectional view of a support leg portion on the short side of the container body.

FIG. 15 is a cross-sectional view of the short side in the stacking state of the above.

FIG. 16 is a sectional view of a short side in the nesting state according to the embodiment.

FIG. 17 is a cross-sectional view showing a state immediately before the short-side support leg is fitted into the short-side concave groove.

FIG. 18 is a cross-sectional view showing a state in which the supporting leg on the short side is fitted in a concave groove on the short side.

FIGS. 19 (a), (b), (c), and (d) are perspective views as viewed from below showing examples of the support legs on the long side.

FIG. 20 (a) (b) (c) (d) (e) (f)
(G) is a perspective view showing each example of an inside projection, respectively.

FIG. 21 (a) (b) (c) (d) (e) (f)
(G) is a perspective view showing each example of a small projection.

FIG. 22 is a perspective view showing a conventional example.

FIG. 23 is a plan view for explaining a deformation of a flange portion in a conventional example.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Container main body 2 Flange part 3 Side wall part 4 Support leg 5 Pocket part 6 Transport container 7 Engagement recess 8 Engagement protrusion 30 Inner protrusion 31 Projection for preventing longitudinal displacement

Claims (1)

[Claims] 1. A flange portion is formed on an outer peripheral portion of an upper opening portion of a container main body having a rectangular shape in a plan view with an open upper portion, and a flange portion is formed on a lower portion near each of both end portions of an outer surface portion of both long side wall portions. A supporting leg protruding from the outer surface of the side wall portion is provided, and a pocket portion on which a supporting leg formed point-symmetrically on the side wall portion facing the long side flange portion is formed, and the two container bodies are formed. The lower end of the support leg is placed on the flange portion of the lower container body in the state of being stacked in the same orientation, and the lower stage is rotated by 180 ° in plan view with respect to the lower container body and the upper container body is stacked on the lower container body. A transport container configured such that the support leg of the upper container body is immersed in the pocket portion of the container body, wherein an engagement recess is formed near the pocket portion forming portion of the flange portion on the long side. And stack the two container bodies in the same direction. Provided an engaging projection that engages the engagement recess in a girder state to the end portion of the protruding tip side of the lower surface portion of the support legs,
The lower surface of the support leg is placed on the upper end of the inner protrusion that forms the inner wall of the engagement recess with the engagement protrusion engaged with the engagement recess, and the lower surface of the lower surface of the support leg is placed on both sides. A transport container characterized in that at least one of the side portions is provided with a longitudinal displacement prevention projection that engages with a side surface portion in a direction parallel to the longitudinal direction of the flange portion on the long side of the inner projection.