JPH0733145A - Box-type pallet - Google Patents

Abstract

PURPOSE:To prevent an open/close door from being deformed by locking the door to right and left sidewall sides by a locking device in a closed state and inserting engaging members to both ends of the door from an open/close direction. CONSTITUTION:By inserting a bar bolt 33 into a through hole 32 of a staple 31, a lower positioned open/close door 9 is fixed to left and right sidewalls 5, 6 an a closed position. A staple 35 for preventing lateral shift attached to a lower part on the front end of the sidewalls 5, 6 is inserted to both ends of the door 19 to have them engaged. When numerous items are housed into a pallet, each sidewall is pushed by internal pressure F from inside to outside by the housed items. Since the staple 35 for preventing lateral shift is engaged with both ends of the lower positioned open/close door 19 in a closed state at this time, the door 19 is fixed in a lateral direction, so that swelling outward of a center of the door 19 can be reduced. Therefore it is prevented that both sides of the door 19 may be shifted toward the center by the internal pressure F, the bar bolt 33 of a lower locking device 28 may be removed from the through hole 32 and unlocking may occur spontaneously.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a box-shaped pallet having a base body and four side walls arranged from the four sides of the base body upward.

[0002]

2. Description of the Related Art Conventionally, Japanese Utility Model Publication No. 1-45022 can be cited as an example of this type of box pallet. That is, the pallet body is formed in a box-like shape having an open upper surface by the base body, the front and rear side walls, and the left and right side walls. The front and rear side walls and the left and right side walls are each formed in a mesh shape.
The front side wall is divided into an upper portion, an intermediate portion, and a lower portion, and the upper end of the lower portion is connected to the intermediate portion via a connecting tool. As a result, the lower part rotates around the axis in the left-right direction around the upper end to open and close. Further, on both sides of the lower end of the lower portion, lock tools for fixing the lower portion to the left and right side walls at the closed position are provided.

As shown in FIG. 8, these locks 51 are
Brackets 54 provided at the front ends of the left and right side walls 52, 53, bar bolts 56 that can be inserted into and removed from through holes 55 formed in these brackets 54, and a bar guide that attaches these bar bolts 56 to the lower portion 58 so as to be slidable in the left-right direction. It is formed by 57 and. Then, by inserting the bar bolt 56 into the through hole 55 of the bracket 54, the lower portion 58 is fixed to the left and right side walls 52, 53 at the closed position.

[0004]

However, in the above-mentioned conventional type, when a large number of items are stored in the pallet body, each side wall is pushed from the inside to the outside by the internal pressure F, so that each side wall is pushed. The central part of the bulge outward.
Due to the deformation of each side wall, the central portion of the lower portion 58 bulges outward as shown by the phantom line in FIG. 8 on the front side wall, so that both side portions of the lower portion 58 are displaced toward the central side and the bar bolt 56 penetrates. There is a possibility that the lower part 58 may be unlocked without permission from the hole 55 and the stored items may spill out from the lower part 58.

The present invention solves the above problems, and an object of the present invention is to provide a box-shaped pallet capable of preventing the opening / closing door from being deformed by internal pressure.

[0006]

In order to solve the above-mentioned problems, a box-shaped pallet according to the present invention has a pallet body formed in a box shape having an open upper surface by a base body, front and rear side walls, and left and right side walls, and at least the front side wall. , A lock device that forms a rotatable openable door around a horizontal axis centering on one of the upper and lower ends and locks the openable door to the left and right side walls in a closed state. In addition, engaging members that are inserted and engaged in the opening and closing direction at both side ends of the open / close door in the closed state are provided.

[0007]

With the above construction, when a large number of items are stored in the pallet body, each side wall is pushed from the inside to the outside by the internal pressure by the stored items. At this time, since the engaging members are engaged with both side ends of the closed open / close door, the open / close door is fixed in the left-right direction, and the central portion of the open / close door is prevented from expanding outward. Therefore, it is prevented that both sides of the opening / closing door are displaced to the center side by the internal pressure and the locking device is arbitrarily released.

[0008]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to FIGS. As shown in FIGS. 1 and 2, 1 is a pallet body, which is a base body 2 and four side walls arranged upward from four sides of the base body 2, that is, a front side wall 3, a rear side wall 4, and a left side wall 5. , And the right side wall 6 are formed into a box shape with an open upper surface. The base body 2 and the side walls 3, 4, 5 and 6 are formed in a mesh shape. Legs 7 are vertically provided on the lower surface of the base body 2, and a fork insertion space 8 is formed below the base body 2.

As shown in FIG. 3, the rear side wall 4 has an upper portion.
It is divided into two parts, 10 and a lower part 11, and the upper part 10 and the lower part 11 are connected to each other through a hinge 12 so as to be swingable back and forth. The lower end portion of the rear side wall 4 and the rear edge of the base body 2 are hinged together.
The rear side wall 4 can be folded sideways toward the base body 2 side to be folded.

As shown in FIG. 4, the lower end portions 5a, 6a of the left and right side walls 5, 6 are fixed to the base body 2, and the left and right side walls 5, 6 and the lower end portions 5a, 6a thereof are hinged 14 respectively.
It is connected via left and right swingable. This allows
The left and right side walls 5 and 6 can be folded sideways on the side of the base body 2 while leaving the lower end portions 5a and 6a.

As shown in FIGS. 1, 2 and 5, the front side wall 3 is provided with an intermediate portion 17, an upper opening / closing door 18 provided above the intermediate portion 17, and below the intermediate portion 17. It is composed of a lower opening / closing door 19 that is opened. A lower end of the upper opening / closing door 18 is connected to an upper end of the intermediate portion 17 via a hinge tool 20 so as to be rotatable about a horizontal axis 21. Further, the upper end of the lower opening / closing door 19 is connected to the lower end of the intermediate portion 17 via a hinge tool 22 so as to be rotatable around a horizontal axis 23. The intermediate portion 17 is supported by a support frame 24 connected to the front edge of the base body 2. Since the support frame 24 is swingably connected to the base body 2 via a hinge 25, the support frame 24 swings toward the base body 2 so that the front side wall 3 moves toward the base body 2 side. Can be folded sideways and folded.

The front and rear side walls 3, 4 and the left and right side walls 5, 6 are a pair of left and right locking devices provided on the front side wall 3, respectively.
26, 27, 28 and a lock device 29 provided on the rear side wall 4 fix each other in an upright posture. Of these, as shown in FIG. 2, the upper locking device 26 locks the upper opening / closing door 18 on the left and right side walls 5 and 6 in the closed state, and the lower locking device 28 opens the lower opening / closing door 19 in the left and right side walls. It locks to the 5th and 6th side.

As shown in FIG. 5, the lower locking device 28 is
Staples 31 provided under the front ends of the left and right side walls 5, 6.
And the bar bolts 33 that can be inserted into and removed from the through holes 32 formed in the staples 31, and the bar guides 34 that attach the bar bolts 33 to the lower both side ends of the lower opening / closing door 19 so as to be slidable in the left-right direction. And the bar bolt
By inserting 33 into the through hole 32 of the staple 31, the lower opening / closing door 19 is fixed to the left and right side walls 5, 6 at the closed position.
The other lock devices 26, 27, 29 are also formed in the same manner.

Further, as shown in FIGS. 5 to 7, the lower opening / closing doors 19 in the closed state are provided at the lower front ends of the left and right side walls 5 and 6, respectively.
Side shift preventing staples 35 (an example of an engaging member) that are inserted and engaged in the opening and closing direction are attached to both ends of the. These lateral displacement preventing staples 35 are formed by bending a wire into a U shape, and the semicircular portion at the tip thereof is the lower opening / closing door 19
It is inserted in the mesh at both ends of the center part of.

The operation of the above structure will be described below.
Items (agricultural products, etc.) in the assembled pallet body 1
In order to close the door, the bar bolt 33 of the upper lock device 26 is slid and pulled out from the through hole 32 of the stapler 31 to release the lock, and as shown by the phantom line in FIG. It is rotated downwards through the opening portion 36 at the upper part of the front face opened by this. In addition, when taking out an item, the bar bolt 33 of the lower lock device 28 is slid and pulled out from the through hole 32 of the staple 31 to unlock the lower lock door.
19 is rotated upward around the left-right axis 23, and this is performed through the opening portion 37 at the lower front surface opened by this.

When a large number of items are stored in the pallet body 1, as shown in FIG. 7, the side walls 3, 4, 5, 6 are pushed from the inside to the outside by the internal pressure F by the stored items. At this time, the lower opening / closing door with the side slip prevention staple 35 closed
Since the lower opening / closing door 19 is fixed in the left-right direction because it is engaged with both side ends of the lower opening 19, the central portion of the lower opening / closing door 19 is prevented from expanding outward. Therefore, due to the internal pressure F, the lower opening / closing door
It is prevented that both side portions of 19 deviate to the center side and the bar bolt 33 of the lower lock device 28 is pulled out from the through hole 32 and unlocked without permission.

When folding the pallet body 1, the bar bolts 33 of the lock devices 26, 27, 28, 29 are stapled.
The side walls 3, 4, 5, 6 are separated by pulling out from the through hole 32 of 31 and unlocking. Then, with the upper opening / closing door 18 of the front side wall 3 folded to the intermediate portion 17 side, the support frame 24 is swung to the base body 2 side. As a result, the front side wall 3 is laid sideways and stacked on the base body 2. Next, with the upper part 10 of the rear side wall 4 folded to the lower part 11 side, the rear side wall 4 is laid down side by side and stacked on the folded front side wall 3. Then, the left side wall 5 is laid down side by side, and it is piled up on the folded back side wall 4, and the right side wall 6 is laid down side by side, and it is piled up on the folded left side wall 5. As a result, the front side wall 3, the rear side wall 4, the left side wall 5, and the right side wall 6 are folded on the base body 2 in an overlapping state.

Although it is conceivable to attach a lateral deviation preventing staple 41 to the front surface of the base body 2 as shown by the phantom line (a) in FIG. 1, in this case, the articles taken out from the lower opening / closing door 19 are used for lateral deviation prevention. It may hit the staple 41 and get scratched. On the other hand, in the above-described embodiment, since the lateral shift preventing staples 35 are attached to the left side wall 5 and the right side wall 6, the articles taken out from the lower opening / closing door 19 do not hit the lateral shift preventing staples 35.

In the above embodiment, as an example of the engaging member,
The side slip prevention staples 35 are provided at both ends of the closed lower door 19 in the open / close direction and are engaged in the open / close direction. May be. Further, the bar bolt 33 of the locking device may be engaged with the prevention staple 35. The engagement member is not limited to the staple 35, and may be a plate-shaped or rod-shaped protrusion.

In addition, in the above embodiment, FIG. 2, FIG. 3 and FIG.
Hinges 12, 13, 14, 20, 22, 25 as shown in Fig.
, But the hinge coil 40 may be used for connection.

In the above embodiment, the opening / closing door 19 is provided on the front side wall 3, but the opening / closing door is provided on the rear side wall 4 or the left and right side walls 5, 6 and the lateral shift preventing staples engaging with the opening / closing door are provided. It may be a box-shaped pallet.

[0022]

As described above, according to the present invention, when a large number of items are stored in the pallet body, the side walls are pushed by the stored items from the inside to the outside by the internal pressure. Since the members are engaged with both side ends of the open / close door in the closed state, the open / close door is fixed in the left-right direction, and the central portion of the open / close door is prevented from expanding outward. Therefore, it is prevented that both sides of the opening / closing door are displaced to the center side by the internal pressure and the locking device is arbitrarily released.

[Brief description of drawings]

FIG. 1 is a perspective view of a box pallet according to an embodiment of the present invention.

FIG. 2 is a front view of a box-shaped pallet.

FIG. 3 is a rear view of the box-shaped pallet.

FIG. 4 is a side view of a box-shaped pallet.

FIG. 5 is a perspective view of a lower lock device and a lateral shift preventing staple.

FIG. 6 is a side view of a lateral shift preventing staple.

FIG. 7 is a partially cutaway plan view for explaining the operation of a lateral deviation preventing staple.

FIG. 8 is a plan view showing deformation of a lower portion of a conventional box pallet due to internal pressure.

[Explanation of symbols] 1 Pallet main body 2 Base body 3 Front side wall 4 Rear side wall 5 Left side wall 6 Right side wall 19 Lower opening / closing door 23 Left-right axis 28 Lower locking device 35 Side slip prevention staple (engaging member)

Claims (1)

[Claims] 1. A pallet body is formed in a box shape having an open upper surface by a base body, front and rear side walls, and left and right side walls, and is rotatable on at least a front side wall about an axial center in the left-right direction. A lock device that forms an open / close door and locks the open / close door to the left and right side walls in the closed state is inserted into the left side wall and the right side wall from both sides of the open / close door in the open / close direction and engaged. A box-shaped pallet, each of which is provided with a corresponding engaging member.