JP2753454B2 - Transport storage container - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a transport container for storing precision parts such as semiconductors, documents, foodstuffs and the like, which are vertically stacked in multiple stages.

[0002]

2. Description of the Related Art Conventionally, as this type of transport storage container, for example, as shown in FIGS. 6 to 8, opposing side walls 3 of a container body 1A comprising a bottom wall 2 and four side walls 3a to 3d.
a, 3b, on the upper surface of the upper flange 4 ",
The positioning recesses 7 ″ are formed in the direction parallel to the line M perpendicular to the side walls 3a, 3b.
3b, a lower flange 5 "is formed with a lower convex portion 6" to be fitted with the upper concave portion 7 ", respectively. The convex portion 6" of the lower flange 5 "of the upper storage container 1 'and the lower storage container are formed. There is known a configuration in which a concave portion 7 "of an upper flange 4" of 1 'is fitted to each other and stacked vertically in multiple stages. Further, as shown in Japanese Utility Model Publication No. 54-14592 shown in FIG. Locking pieces f are formed on the upper flange of the container 1 ″ at appropriate intervals, and these locking pieces f surround the bottom peripheral portion of the upper storage container 1 ″ and position the upper storage container 1 ″. Is known.

[0003]

[0006] However, FIGS.
In the concavo-convex fitting structure shown in FIG.
Are formed in the same direction and at the same angle, respectively, so that, for example, when transporting the storage containers 1 ′ stacked vertically and storing them in a warehouse, the concave and convex fitting portions 6 are formed on the storage containers 1 ′. Applying external force in the direction parallel to ", 7"
Alternatively, in the case where the lateral micro-vibration is applied during the transportation of the storage container 1 ′, the fitting of the concave and convex fitting portions 6 and 7 is easily released by the external force and the vibration, and the storage containers stacked in the vertical direction are stacked. There is a concern that 1 'will shift sideways and collapse the load.
Further, in order to facilitate the fitting between the convex portion 6 "and the concave portion 7", generally, as shown in FIG. 8, the inner width of the concave portion 7 "is slightly larger than the outer width of the convex portion 6". And the uneven fitting portion 6 ″,
A small gap G (about 1 mm) is secured at 7 ",
When the storage containers 1 ′ are stacked in, for example, 10 stages, the perpendicular L
(FIG. 7), an overall inclination of about 10 mm (= 1 mm × 10) is generated, and about 20 mm when further stacked in 20 steps
(= 1 mm x 20) will be generated,
There is a problem that the inclination angle H of the storage container 1 'in the horizontal direction becomes large, the balance of the storage container 1' as a whole is deteriorated, and the collapse of the load due to the lateral displacement is more likely to occur. Further, when the storage container 1 'is a molded product, the fitting convex portion 6 "and the concave portion 7" do not match due to shrinkage due to physical properties after the container is formed, and the convex portion 6 "and the concave portion 7" do not match. In some cases, fitting cannot be performed, and in consideration of this, molding must be performed with a gap G more than necessary.

On the other hand, in a storage container 1 "shown in FIG. 9 in which a locking piece f is formed on a flange, a bottom of the upper storage container 1" is formed by a locking piece f erected on the flange with a space therebetween. Since the upper storage container 1 "is positioned around the periphery, the external force concentrates on the locking piece f when the storage container 1" is conveyed and lateral vibration is applied during transportation. In addition, when the storage container 1 ″ is a molded product, there is a problem that the strength of the locking piece f is weak and the locking piece f is easily broken by an external force.

As a result, any of the conventional storage containers 1 ',
Even at 1 ", it is easy to collapse during transportation.
In particular, it was not suitable for transporting precision parts. The present invention has been made in view of the above-mentioned conventional problems, and an object of the present invention is to prevent a collapse of a container caused by a lateral displacement of a vertically stacked storage container, thereby ensuring the protection of contents. It is an object of the present invention to provide a transport storage container as described above.

[0006]

In order to solve the above-mentioned problem, the present invention provides a container body 1A having a bottom wall 2 and four side walls 3a to 3d, each of which has an upper edge portion of an opposing side wall 3a, 3b. One of the upper convex portion 6 or the concave portion 7 for positioning is formed, respectively, and these upper convex portion 6 or the concave portion 7
a and 3b are formed to be inclined at different angles with respect to a line M connecting the right angles to each other, and opposing side walls 3a and 3b
In the vicinity of the lower edge portion, one of the lower concave portion 7 or the convex portion 6 to be fitted with the upper convex portion 6 or the concave portion 7 is formed, respectively.
A storage container, wherein each of the convex portion 6 and the concave portion 7 has a substantially
In addition to being formed in a triangular shape, the ridge line of the convex portion 6 and the concave portion 7
It is characterized in that the grooves are inclined toward the center of the container body 1A .

[0007]

[0008]

According to the present invention, the bottom wall 2 and the four side walls 3a are provided.
Opposing side walls 3a, 3 of the container body 1A comprising
An upper convex portion 6 (or concave portion 7) for positioning is formed at each upper edge portion of the upper side portion b, and the upper convex portion 6 or concave portion 7 is fitted near the lower edge portion of the opposing side walls 3a, 3b. Lower recess 7
(Or convex portions 6) are respectively formed, and the convex portions 6 and the concave portions 7 are respectively formed.
Since the cross-section is formed in a substantially triangular shape, the storage container 1 is
When stacking, the triangular section is inserted into the recess 7 having the triangular section.
The protrusions 6 slide into and fit into each other, so that the fitting of the concave and convex fitting portions 6 and 7 is not disengaged even if an external force is applied from any direction. It can be prevented. Moreover, the ridge line of the convex portion 6 and the concave portion 7
The grooves were inclined toward the center of the container body 1A.
From above, the upper storage container 1 is turned 180 ° in the horizontal direction.
Even when placed on the lower storage container 1, the projection 6 and the recess
7, so that the direction of the storage container 1 can be changed.
Can be changed freely, reducing the time required for multi-stacking
Can be planned.

[0009]

Embodiments of the present invention will be described below with reference to the drawings. As shown in FIGS. 1 and 2, the transport storage container 1 of the present embodiment is opened upward with a flat bottom wall 2 and four side walls 3 a to 3 d erected from the end of the bottom wall 2. A synthetic resin container body 1A is formed. Container body 1A
An upper flange 4 protrudes toward the outside of the container body 1A from upper edges of the four side walls 3a to 3d.
On the upper surface of two opposing sides 4a, 4b, three positioning projections 6, spaced apart in the length direction of each side 4a, 4b,
6 'are formed respectively. These convex portions 6, 6 'are each formed in a triangular cross section, and each of the convex portions 6, 6 located on both sides is inclined at a different angle with respect to a line M connecting the opposing side walls 3a, 3b at right angles. ing. In the present embodiment, each ridge line of the convex portions 6 and 6 located on both sides has an angle θ of about 45 ° toward the center point N of the upper opening of the container body 1A.
₁ and θ ₂ respectively. In other words, the container body 1
The ridges of the convex portions 6, 6 'are formed on the radiation radially extending through the center point N of A. The ridge line of the convex portion 6 'located at the center side has an upper opening of the container body 1A at an angle different from that of each of the convex portions 6 and 6 (an angle parallel to a line M connecting the opposed side walls 3a and 3b at right angles). To the center point N of

On the other hand, a lower flange 5 is provided at the lower edge of the four side walls 3a to 3d of the container body 1A so as to be connected to the end of the bottom wall 2 of the container body 1A toward the outside of the container body 1A. And the upper convex portion 6 on the lower surface of the lower flange 5.
At positions corresponding to 6 ', groove-shaped concave portions 7, 7' having a triangular cross-section are formed to fit vertically with the upper convex portions 6, 6 '. The grooves are formed in the recesses 7 and 7 ′ in the same direction and at the same angle as the upper protrusions 6 and 6 ′. In other words, the grooves 7 and 7 ′ radially pass through the center point N of the container body 1 A. The grooves of the recesses 7, 7 'are respectively formed along the extended radiation. Thereby, the plurality of storage containers 1
When the containers are stacked one above the other,
The projections 6, 6 ′ of the upper flange 4 of the storage container 1, which is positioned lower than the recesses 7, 7 ′ of the lower flange 5, can be fitted up and down. 6 ', 7'
Thereby, a lateral displacement of each storage container 1 can be prevented.

Here, in order to facilitate the fitting of the projections 6 and 6 'and the recesses 7 and 7', each having a triangular cross section, and taking into consideration shrinkage due to the material (molded product) of the storage container 1. , FIG. 2
(A), the the angle w ₂ 'of the recess 7 of the angle w ₁ and lower (as well (7 over the convexity 6 6)' as well) w
_It is preferable to set the relation of ₁ <w _{2. In} order to prevent the upper flange 4 from rattling due to shrinkage deformation, the height t of the convex portions 6 and 6 ′ and the depth of the concave portions 7 and 7 ′ are set. It is preferable to set d and t in a relationship of t> d. Further, FIG.
As shown in (a), the convex portion 6 and the concave portion 7 are
To improve the strength of the concave and convex fitting portions 6 and 7. 3 (b) shows a bar code display portion 11 recessed on the outer surface of the side wall, FIG. 3 (c) shows a cross-sectional shape of the upper flange 4, and FIG.
The drain hole 10 is formed in the upper flange 4 having a hook-shaped cross section.
It also has a function as a positioning hole for preventing the molding die (core) from falling or displacing at the time of molding. (E) shows the cross-sectional shape of the convex portion 6.

When the contents P are stored in the storage container 1 and stacked vertically, the convex portions 6 and 6 'of the upper flange 4 of the lower storage container 1 and the upper storage container 1 are stacked. By fitting the recesses 7 and 7 'of the lower flange 5 respectively, the necessary number of storage containers 1 can be stacked and transported vertically or stored in a warehouse. At this time, for example, even when an external force is applied to the storage container 1 in a direction parallel to the concave and convex fitting portions 6 and 7 or a slight vibration in the horizontal direction is applied during transportation, for example, FIG.
The lateral displacement of the concave and convex fitting portions 6 and 7 of one side wall 3a indicated by the arrow X can be prevented by the concave and convex fitting portions 6 and 7 of the other side wall 3b having different inclination angles from the concave and convex fitting portions 6 and 7. 4 can be prevented by the concave and convex fitting portions 6 and 7 of the one side wall 3a, and the concave and convex fitting portions 6 'and 7' can be prevented. Can be prevented by the concave and convex fitting portions 6 and 7, and as a result, there is no fear that the concave and convex fitting portions 6 and 7 may be disengaged even when an external force or vibration is applied from any direction. Moreover, since the positioning projection 6 and the recess 7 are formed to be inclined, the length of the recess 7 and the length of the projection 6 can be increased without increasing the flange width. The fitting areas 6 and 7 increase, and the fitting force of the storage container 1 can be increased.

As a result, the storage containers 1 which are stacked in upper and lower stages
It is possible to prevent the contents P from being dropped or damaged due to the collapse of the cargo, and to ensure the protection of the contents P. Moreover, when the storage container 1 is a molded product, the storage container 1 of the present invention can be easily formed only by changing the design of a part of the molding die (the portion where the convex portion 6 and the concave portion 7 are respectively formed). Therefore, it is not necessary to largely change the design of the molding die, and it is possible to suppress an increase in cost.

In addition, a pair of (three pairs in this embodiment) positioning convex portions 6, 6 'and concave portions 7, 7' are provided on the radiation radially extending through the center point N of the container body 1A. When the storage containers 1 are stacked in a multi-stage manner, they are fitted on the lower storage container 1 even when the upper storage container 1 is turned 180 ° in the horizontal direction around the center point N. Can be combined. In other words, in any one of the two states where the upper storage container 1 is inverted by 180 ° in the horizontal direction, the lower storage container 1 can be fitted, so that the time required for multi-stacking can be reduced. And even if external force or vibration is applied to the storage containers 1 stacked vertically in a lateral direction, the external force or vibration is uniformly received by the concave and convex fitting portions 6, 7; 6 ', 7'. And the collapse of the load due to the lateral displacement of the storage container 1 can be more effectively prevented.

Conventionally, since the fitting projection and the recess are rectangular in cross section, when the projection and the recess are fitted with a gap therebetween (see FIG. 7), a multi-stage stacking is required. While the occurrence of rattling in the lateral direction of the entire storage container is unavoidable and is likely to collapse, in the present embodiment,
Since the cross-sectional shapes of the positioning projections 6 and 6 'and the depressions 7 and 7' are each triangular, no gap is formed in the concave and convex fitting portions 6 and 7, so that the vibration of the entire storage container 1 stacked in multiple stages can be reduced. The occurrence of rattling can be effectively prevented, and not only the collapse of the storage container 1 but also the minute vibration of the storage container 1 can be prevented at the same time. Moreover, by 'an angle w ₁ of the recesses 7,7 of the lower' over the convexity 6,6 and smaller than the angle w ₂ of the can corresponding to the shrinkage of the molded article (container 1), and,
By setting the height t of the convex portions 6 and 6 'higher than the depth d of the concave portions 7 and 7', it is possible to prevent rattling due to contraction deformation of the upper flange 4. Thus, the convex portions 6, 6 '
By making the cross-sectional shape of the recesses 7 and 7 'triangular, it is possible to prevent misalignment of the concave and convex dimensions caused by shrinkage due to physical properties after molding of the container body 1A, and to prevent a heavy object from being stored. The projections 6, 6 'and the recesses 7, 7' are engaged with each other, so that the fitting can be securely prevented from being disengaged in the case of multi-stacking. In addition, as shown in FIG. 1, by forming a large number of ribs 13 on the lower surface side of the bottom wall 2 in a vertical and horizontal matrix, there is an advantage that the strength of the entire bottom wall 2 can be improved with a small amount of material.

[0016]

In the above embodiment, the upper flange 4 of the container body 1A has convex portions 6, 6 ', and the lower flange 5 has concave portions 7, 7'.
Provided on the upper flange 4 side.
7 ', and convex portions 6, 6' fitted to the concave portions 7, 7 'may be provided on the lower flange 5 side. In addition, convex part 6, 6 '
And the cross-sectional shape of the concave portions 7 and 7 'is not limited to a triangular shape.
It may have a square shape or any other shape. In short, any shape may be used as long as it can fit vertically and can be inclined.

[0018]

As described above, according to the first aspect of the present invention, each of the upper edges of the opposing side walls of the container body composed of the bottom wall and the four side walls is provided with one of the upper convex portions or concave portions for positioning. Each of the upper convex portions or concave portions is formed to be inclined at a different angle with respect to a line connecting the opposing side walls at right angles, and the upper convex portion or the concave portion is formed near the lower edge of the opposing side wall. Since one of the lower concave portion or the convex portion to be fitted with the portion or the concave portion is formed respectively, the storage container stacked vertically and multi-tiered by a simple configuration in which the positioning convex portion and the concave portion are inclined. When transporting or storing in a warehouse, even if external force is applied to the storage container in a direction parallel to the concave and convex fitting portion, or if lateral microvibration is applied during transportation. , The structure of the fitting of the uneven fitting part does not come off, It is possible to prevent the cargo collapse due to lateral displacement of the saw the container. In addition, since the positioning protrusion and the recess are inclined, the fitting area between the recess and the protrusion is increased, and the fitting force of the storage container can be increased.
As a result, it is possible to provide a transport container capable of sufficiently protecting the contents without causing the contents to fall or damage due to the collapse of the load of the storage containers stacked vertically. Further, when the storage container is a molded product, the transportation storage container of the present invention can be easily formed only by changing the design of a part of the molding die (the portion where the convex portion and the concave portion are formed). Thus, there is no need to largely change the design of the molding die, and the effect of suppressing an increase in cost can be obtained. Ma
In addition, the convex and concave portions for positioning each have a substantially triangular cross section.
When the containers are stacked vertically,
There is no gap between the parts, and all storage containers
It is possible to prevent body vibration and rattling in the horizontal direction.
In addition, if the container body is a molded product,
It is possible to prevent the misalignment of the uneven dimensions caused by shrinkage.
Come, even if the external force is applied and the vibration from the horizontal direction with respect to the multi-stage stacked been container up and down, worry is not necessary to cause collapse of cargo by strike-slip. Furthermore, the ridge line of the convex part and the concave part
Whether the grooves are inclined toward the center of the container body
Then, flip the upper container 180 ° horizontally and lower
Even when placed on the storage container of the step, the convex and concave parts are securely
The time required for multi-stage stacking can be reduced,
Work becomes easier. Also, the protrusion and the recess are located inside the container body.
Towards eccentric part that was on an angle, which is a multistage stacked vertically
Even if external force or vibration is applied to the storage container from the lateral direction
These external forces and vibrations are evenly received by each protrusion and recess
To prevent collapse of cargo due to lateral displacement of the storage container
It can be more effectively prevented.

[0019]

[Brief description of the drawings]

FIGS. 1A and 1B show a transport storage container used in an embodiment of the present invention, wherein FIG. 1A is a cross-sectional view taken along the line EE of FIG. 1B, and FIG.

2A is a cross-sectional view taken along line FF of FIG. 1B, FIG.
FIG. 2 is a sectional view taken along line WW of FIG.

FIG. 3 (a) is an AA line or A'-A 'of FIG. 1 (b).
FIG. 1B is a cross-sectional view taken along the line BB of FIG.
2C is an enlarged sectional view of a portion P ′ in FIG. 2A, and FIG.
2B is a sectional view taken along line DD, and FIG. 2E is an enlarged sectional view of a portion Q in FIG.

FIG. 4 is a plan view for explaining a fitting state of a convex portion and a concave portion of the above.

FIG. 5 is a perspective view of a conventional storage container .

FIG. 6A is a front view of a conventional storage container, and FIG.
It is explanatory drawing of the inclined state of the conventional multistage stacked storage container .

FIG. 7 is an explanatory view of a conventional clearance of an uneven fitting portion .

8A and 8B show another conventional example, in which FIG. 8A is a front view and FIG.
Is a perspective view of a stacked state, and (c) is a partially enlarged sectional view .

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1A Container main body 2 Bottom wall 3a-3d Four side walls 6 Convex part 7 Concave part N Center point

Claims (1)

(57) [Claims] At least one of an upper convex portion or a concave portion for positioning is formed at each upper edge portion of an opposing side wall of a container body composed of a bottom wall and four side walls. A lower concave portion which is formed to be inclined at a different angle with respect to a line connecting the opposing side walls at a right angle and which is fitted with the upper convex portion or concave portion in the vicinity of a lower edge portion of the opposing side wall. A transport storage container having one of the convex portions formed therein.
And each of the positioning convex and concave portions has a substantially triangular cross section.
In addition to forming into the shape, the ridge line of the convex part and the groove of the concave part
A transport container characterized by being inclined toward the center of the main body .