JPH0738133Y2 - Foldable box - Google Patents

Description

[Detailed description of the device]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a foldable box in which each side plate can be folded inward when folded to be stacked on a bottom plate.

[0002]

2. Description of the Related Art Japanese Patent Application No. 2-98 filed by the present applicant earlier
There was a device described in the specification of No. 569. In FIG. 4, reference numeral 1 denotes a rectangular bottom plate in which the left and right sides are wide and the front and rear sides (upper and lower sides in FIG. 4) are narrow. The bracket 2 is erected and fixed to the peripheral portion of the bottom plate 1 upward, and the front and rear side plates 3 and the left and right side plates 4 opposed to each other are arranged on the inner surface side of the bracket 2 to form a first connecting pin. 5
Also, the second connecting pin 6 is connected so as to be rotatable.

Out of the brackets 2, left and right brackets 2a facing each other in the left and right are formed with elongated holes 7 extending in the vertical direction at both ends thereof, as shown in FIGS. (1) The connecting pin 5 is vertically and rotatably fitted from the outside to the inside, and its inner end is screwed and fixed to the lower ends of the front and rear side plates 3. The length of the elongated hole 7 in the up-down direction is a length that substantially corresponds to the thickness of one of the front and rear side plates 3.

In addition, the front and rear brackets 2 facing each other
As shown in FIG. 6, a second connecting pin 6 is rotatably fitted into both ends of b so as to be rotatable from the outside to the inside, and the inner ends thereof are screwed into the lower ends of the left and right side plates 4 described above. Fix with. Each of the second connecting pins 6 is arranged at a high position with respect to each of the long holes 7 described above by a dimension substantially corresponding to the thickness of one of the left and right side plates 4.

The upper ends of the adjacent side plates 3 and 4 are releasably connected to each other by a connecting tool 10. This connecting tool 10 is as shown in FIG. That is, male connectors 11 made of plastic are fixed to both ends of the front and rear side plates 3, and female connectors 12 made of plastic are also fixed to both ends of the left and right side plates 4. The male connector 11 has a main body 1
1a is fitted to the corners of the upper and lower edges of the front and rear side plates 3 and integrally fixed by rivets 13,
A hook-shaped engaging claw 11b bent outward in the thickness direction is formed on 1a so as to project toward the left and right side plates 4, and the upper and lower parts of the engaging claw 11b are formed by a slit 11c to form a main portion 11a.
Separated from a, the main body 11a can be elastically deformed in the thickness direction. Further, in the female connector 12, the main body portion 12a is fitted to the corner portions of the upper and end edges of the left and right side plates 4 and integrally fixed by the rivets 14, and the outside of the main body portion 12a. An engaging hole 12b into which the engaging claw 11b is fitted and locked is formed at the end.

When assembling, the front and rear and left and right side plates 3 and 4 are rotated upward to move the engaging hole 12b of the female connector 12 toward the engaging claw 11b of the male connector 11. After the engaging claw 11b elastically deforms inward and fits in the engaging hole 12b, the engaging claw 11b elastically returns outward and the claw portion engages with the edge of the engaging hole 12b and is adjacent to each other. The side walls 3 and 4 are connected to each other to form a rectangular parallelepiped box.
When the box is folded, the engaging claw 11b is pressed from the outside by a finger to elastically deform the engaging claw 11b inward.
In this state, when the adjacent side walls 3 and 4 are both rotated outward, the engaging claw 11b is disengaged from the engaging hole 12b. Then, when the front and rear side plates 3 are rotated inward, as shown by the chain double-dashed line in FIG. 6, the side plates located on the upper side, for example, the front side plate 3a, has the first connecting pin 5 for connecting them. It moves to the upper part of the hole 7 and horizontally overlaps with the upper surface of the rear side plate 3b. Then, when the left and right side plates 4 are rotated inward, the rotation axis of the left and right side plates 4 is located above the elongated hole 7 and is directed inward toward the long side of the bottom plate 1. Since they rotate with respect to each other, they do not interfere with each other, and as shown by the chain double-dashed line in FIG.

[0007]

In the above-mentioned conventional apparatus, since each side plate is rotated steplessly with respect to the bottom plate, when assembling in a box shape, both side plates 3 and 4 adjacent to each other are held. The male connector 11 and the female connector 12 must be erected so as to be upright with respect to the bottom plate and the upper ends of both must be engaged with each other by the connector 10, that is, the male connector 11 must be inserted into the female connector 12. However, there is a drawback in that it requires a lot of time and effort for the positioning, and quick assembly cannot be performed. It is an object of the present invention to obtain a novel foldable box that solves the above drawbacks.

[0008]

In order to achieve the above-mentioned object, the present invention is configured as follows. That is,
Right and left brackets facing left and right and front and rear brackets facing front and back are erected and fixed at each corner of the rectangular bottom plate,
Form a long hole that extends vertically on each of the left and right brackets,
A first connecting pin is loosely fitted in the elongated hole so as to be movable up and down, and lower end portions of front and rear side plates facing the front and rear are connected to the first connecting pin,
The front and rear brackets are provided with a second connecting pin located at a position higher than the elongated hole, the lower ends of left and right side plates facing left and right are connected to the second connecting pin, and upper ends of adjacent side plates are connected. In a foldable box having detachable coupling tools, the left and right side plates are rotatably connected to the front and rear brackets with respect to the bottom plate through a second connection pin so that the left and right side plates can rotate at an angle greater than 90 degrees. The front and rear side plates are located on the inner surface of each of the left and right brackets and above the elongated hole and below the left and right end portions of each of the front and rear side plates with respect to the bottom plate.
The protrusion and the elastic piece that engage with each other when rotated once are provided.

[0009]

Since the present invention is constructed as described above, the left and right side plates are rotated outward at an angle larger than 90 degrees with respect to the bottom plate, and then the front and rear side plates are rotated by 90 degrees with respect to the bottom plate. When rotated or raised, the protrusions and the elastic pieces are engaged with each other to lock the front and rear side plates to the left and right brackets, whereby the front and rear side plates are raised at an angle of 90 degrees with respect to the bottom plate. Retained. When the left and right side plates are rotated in the standing direction from the outside in this state, both ends of the left and right side plates come close to both ends of the standing front and rear side plates, and the upper ends of the adjacent side plates are connected to each other by a connecting tool. Can be connected by.

Further, when the connecting tool is released and the front and rear side plates are turned inward and the swinging end portions thereof are vertically stacked, the first connecting pin of the upper side plate, for example, the front side plate. Moves to the upper part of the long hole, and the front side plate horizontally overlaps with the upper surface of the rear side plate. Then, when the left and right side plates are turned inward, the turning axes of the left and right side plates are located above the elongated holes, and therefore, the upper and lower side plates are substantially horizontally overlapped with each other. become.

[0011]

Embodiments of the present invention will be described below with reference to the drawings. In the drawings, FIG. 1 is a sectional view corresponding to FIG. 5 showing an embodiment of the present invention, FIG. 2 is an enlarged view of part A thereof, and FIG.
-III is a sectional view. In addition, in FIGS.
The parts having the same reference numerals as in FIG. 6 have substantially the same structure as those in FIGS. 4 to 6. 1 to 3, reference numerals 15 and 16 denote left and right mounting plates and front and rear reinforcing frames that are erected on the front and rear and left and right edges of the bottom plate 1 excluding the respective corners.
The brackets 2 made of plastic are fixed by rivets to the respective end portions and the corner portions of the bottom plate 1.

Of the brackets 2, the bracket 2 provided on the left portion of the rear portion of the bottom plate 1 will be described in detail with reference to FIGS. 2 and 3, and the left bracket 2 extending in the front-rear direction.
a and a rear bracket 2b extending in the left-right direction are integrally formed in an L shape in a plan view, and the lower part of the left bracket 2a and the lower part of the rear bracket 2b are fitted to the corners of the bottom plate 1. The groove 2c is formed. Further, a vertical long hole 7 is formed in the left bracket 2a, and a pin hole (reference numeral omitted) is formed in the front and rear brackets 2b at a position higher than the long hole 7, and formed on the side of each bracket 2a, 2b. Connecting piece 2 on one edge
The a-1 and b-1 are formed to project laterally. The bracket 2 is arranged at each corner of the bottom plate 1, and the connecting pieces 2a-1 and 2b-1 of the bracket 2 are fitted to the side end portions of the reinforcing frames 15 and 16 described above, and their fitting grooves are formed. 2c is fitted in a corner of the bottom plate 1 and fixed by riveting, and the first connecting pin 5 and the second connecting pin 6 are inserted into the elongated hole 7 and the pin hole in the same manner as in the first embodiment described above. , The rear side plate 3 is connected by the first connecting pin 5, and the left side plate 4 is connected by the second connecting pin 6. In addition, a flank 17 that is inclined upward and leftward is formed on the upper part of the left bracket 2a, and the flank 17 allows the left side plate 4 to form an angle larger than 90 degrees with respect to the bottom plate 1. Rotate outward.

A protrusion 20 is formed so as to project inwardly on the inner surface of the left bracket 2a and above the elongated hole 7. The protrusion 20 is formed to be narrower than the thickness of the rear side plate 3 and elongated in the vertical direction. A plastic connecting plate 3c is riveted and fixed to the lower part of the left end of the rear side plate 3, and the projection 20 is provided on the upper left end of the connecting plate 3c.
An elastic piece 21 that is engaged with and disengageable from is integrally formed. As shown in FIG. 3, the elastic piece 21 extends in a tongue shape from the inner surface side of the side plate 3 toward the outer surface, and the projection 20 is fitted in the middle portion in the thickness direction of the outer surface (left surface) thereof. 21a is formed.

Next, the usage of the above embodiment will be described. First, the case of assembling will be described. When the left and right side plates 4 are rotated outward, the left and right side plates 4 rotate with respect to the bottom plate 1 at an angle larger than 90 degrees, and the base portion thereof is located on the flank 17 of the left bracket 2a. It is supported by the flank 17 at the time of collision. Next, when the front and rear side plates 3 are rotated outward, when the front and rear side plates 3 rotate 90 degrees with respect to the bottom plate 1, the recesses 21a of the elastic pieces 21 provided on the front and rear side plates 3 are removed. It engages with the protrusions 20 provided on the left and right brackets 2a. As a result, the front and rear side plates 3 are held upright with respect to the bottom plate 1 at an angle of 90 degrees. When the left and right side plates 4 are rotated in the standing direction from the outside in this state, both ends of the left and right side plates 4 come close to both ends of the standing front and rear side plates 3. As a result, as shown in FIG. 7, after the engaging claws 11b of the male connector 11 provided on each of the front and rear side plates 3 are fitted into the engaging holes 12b of the female connector 12 provided on each of the left and right side plates 4, The engaging claw 11b is elastically returned outward and the engaging claw 11b
Side walls 3 and 4 that are adjacent to each other and engage with the edge portion of b are connected to each other to form a rectangular parallelepiped box.

Next, when the box is folded, the engaging claw 1
When the engaging claw 11b is elastically deformed inward by pressing the 1b with a finger from the outside and both the left and right side walls 3 are rotated outward in this state, the engaging claw 11b is released from the engaging hole 12b. break away.
Then, when the front and rear side plates 3 are rotated inward, as in the conventional case, that is, as shown in FIG. 6, the first connecting pin 5 of, for example, the front side plate 3a located at the upper part moves to the upper part of the long hole 7. The front side plate 3a horizontally overlaps the upper surface of the rear side plate 3b. Then, when the left and right side plates 4 are rotated inward, the left and right side plates 4 are located above the elongated holes 7 as in the conventional case, that is, as shown by the two-dot chain line in FIG.
And the upper side plate 3a of the front portion overlaps with the upper side horizontally.

[0016]

As is apparent from the above description, according to the present invention, the side plates can be stacked on the bottom plate in an orderly manner, and the front and rear side plates facing each other can be attached to the bottom plate by 90 degrees.
Since the projection and the elastic piece are engaged with each other to stand up and hold the front and rear side plates when they are raised at an angle of degrees, the position of the connecting tool provided at the upper end of each adjacent side plate. It has the effect of facilitating assembly and quick assembly.

[Brief description of drawings]

FIG. 1 is a side sectional view of an essential part showing an embodiment of the present invention.

FIG. 2 is an enlarged cross-sectional view of a portion A of FIG.

3 is a sectional view taken along line III-III in FIG.

FIG. 4 is a plan sectional view showing a conventional example.

5 is a sectional view taken along line VV of FIG.

6 is a sectional view taken along line VI-VI of FIG.

FIG. 7 is a plan cross-sectional view of a connector part showing a conventional example.

[Explanation of symbols]

 1 bottom plate 2 bracket 2a left and right bracket 2a-1 connecting piece 2b front and rear bracket 2b-1 connecting piece 3 front and rear side plate 3c connecting plate 4 left and right side plate 5 first connecting pin 6 second connecting pin 7 long hole 10 connecting tool 11 Male connector 11a Main body portion 11b Engaging claw 11c Slit 12 Female connector 12a Main body portion 12b Engagement hole 13 Rivet 14 Rivet 15 Left and right reinforcing frames 16 Front and rear reinforcing frames 17 Flank surface 20 Projection 21 Elastic piece 21a Recess

Claims (1)

[Scope of utility model registration request] 1. Right and left brackets facing left and right and front and rear brackets facing front and rear are erected and fixed at respective corners of a rectangular bottom plate, and long holes extending vertically are formed in the left and right brackets. The first connecting pin is loosely fitted in the hole so as to be vertically movable, the lower ends of the front and rear side plates facing the front and rear are connected to the first connecting pin, and the brackets at the front and rear are located at a position higher than the elongated hole. A foldable box provided with a second connecting pin, connecting lower ends of left and right side plates facing each other to the second connecting pin, and disengageable connecting tools at upper ends of adjacent side plates. The left and right side plates are rotatably connected to the front and rear brackets via a second connecting pin so as to be rotatable with respect to the bottom plate at an angle greater than 90 degrees, and the inner surface of each of the left and right brackets and the elongated hole Above and on both sides of the front and rear side plates A foldable box characterized in that a protrusion and an elastic piece that engage with each other when the front and rear side plates are rotated 90 degrees with respect to the bottom plate are provided in the lower portion of the end portion.