JP2002193365A - Duct unit packaging structure and duct unit packaging method - Google Patents

Abstract

PROBLEM TO BE SOLVED: To facilitate a transportation of a duct unit for use in forming a series of ducts having a rectangular section from its manufacturing factory to its installation site. SOLUTION: Walls 1 to 4 having connector flanges 1a to 4a at their both ends while being bent are connected at corner segments 5 to 8 at a right angle to form a rectangular cylindrical duct unit A. The corners 6, 8 are further bent while the corners 5, 7 of this duct unit A are being bent flat to cause an entire unit to be deformed flat, adhering tapes 15 are applied from the flanges 1a, 2a to the flanges 3a, 4a aligned at their backs to each other to cause them to be bound, resulting in that their volume is reduced. When the duct unit is used after its transportation, the adhering tape 15 is cut with a knife, a force for spreading the corners 6, 8 is applied to the duct unit and changes it to its original shape. An L-shaped corner piece is abutted against and fixed to an end segment of each of the flanges to keep a right angle.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to packing a duct unit used for assembling a long duct for air supply to be connected to an air conditioner from a factory where the duct unit is manufactured to a construction site. The present invention relates to a structure and a packing method.

[0002]

2. Description of the Related Art A duct unit has a thickness of 0.4 mm in a factory.
It is manufactured from a rust-proof iron plate of about 1.6 mm into a quadrangular cylindrical shape having a connection flange, and is transported to a construction site by truck while being careful not to deform it. The length of the duct unit is determined by the width of the wound steel plate (eg, 182).
0 mm) is generally set as the upper limit of the length, and therefore, most of them fit within 2000 mm. However, the width of the wall of the duct unit (duct size) is 1 mm depending on the amount of air blown.
Since it is designed to be about 50 to 3000 mm, in the case of a large duct unit, the number of duct units that can be loaded on one truck is very small, and the transportation efficiency is extremely low.

[0003]

SUMMARY OF THE INVENTION An object of the present invention is to make a duct unit compact at the time of transportation, to facilitate handling, and to increase transportation efficiency.

[0004]

Means for solving the above-mentioned problems are as described in each claim. The packing structure of claim 1 is a packing structure of four surfaces continuous through right-angled corners. In a duct unit that has walls and has flanges bent outward at both ends of each wall, two continuous walls and two other continuous walls are deformed at corners. In this manner, the flanges are substantially flattened and overlapped, and a back-to-back flange portion is connected at an intermediate position of the overlap. According to this measure, the duct unit becomes flat, compact and suitable for transportation.

A packing structure according to a second aspect of the present invention is characterized in that, in the first aspect, the back-to-back flange portions are bonded by attaching an adhesive tape. According to this means,
The binding means is simple and can be quickly bound.

According to a third aspect of the present invention, there is provided a duct unit having four continuous walls via a corner, and a flange unit which is provided at both ends of each wall by bending a flange outward. The two wall portions and the other two continuous wall portions are almost flattened by deforming the bending of the corners and overlapped, and then, at the middle position of the overlap, a back-to-back flange portion is attached. I do. According to this means, the duct units can be quickly assembled into a flat and compact one.

[0007]

Embodiments of the present invention will be described below with reference to the drawings. In FIG. 1, A is a duct unit having a rectangular cross-section, which is provided with four walls 1, 2, 3, 4 and corners 5, 6, 7, 8 formed by seam-haze portions, Flanges 1a, 2a, 3a, and 4a for connecting to other duct units are continuously provided by assembly. Four plate members are used for the wall portions 1 to 4, and the respective plate members are connected to each other at right angles by, for example, seam goby portions 10 and 11 shown in FIGS. 2 and 3 to form corner portions 5 to 8. .

In FIG. 2, a seam goby portion 10 is formed by bending an edge of a wall portion 1 to form a male goby 12 and bending an edge portion of a wall portion 2 doubly, and a female goby is provided with a stop goby 13a. 13 and the male goby 1 is fitted to the female goby 13 to stop the goby 13a.
Is bent and caulked. Seam goby part 1 in FIG.
1 is provided with an upward hook 12a at the tip of the male goby 12, the female gob 13 is provided with an insertion groove on the inner surface side of the duct, a downward hook 13b is provided at the tip of the goby, and the hooks 12 and 13 are engaged to engage the hook 12a. , 13b are engaged and swaged.

[0009] In the illustrated one, all four corners are provided with seam joints.
One or two of them may be formed by bending other corners only.

FIG. 4 shows a state in which the duct unit A is packed.
When the oblique force is applied so as to extend the bend in a plane and bend the corner portions 6 and 8 in a folded state, the seam goze portion is easily bent and the whole is deformed as shown in FIG.
And the wall portions 3 and 4 are substantially flat and overlap each other. However, the original bend remains on the corners 5 and 7 as a trace. In this state, when the flange portions 1a, 2a and the flange portions 3a, 4a are bonded with the adhesive tape 15, the flattened state shown in the figure is maintained, and a compact packing state is obtained.

Therefore, the number of pieces that can be loaded on one truck is not only 5 to 10 times or more than that of the original form, but also the transportation and the lifting by the container become easy. Note that, instead of the adhesive tape 15, a sheet metal piece bent can be used alone or in combination with the adhesive tape.

At the construction site, the adhesive tape 15 of the packaged article shown in FIG. 4 is cut with a knife, and the corners 6 and 8 are pressed.
The corners 6 and 8 widen, and the other corners 5 and 7 bend at the position of the mark, and the whole returns to its original shape. Here, the L-shaped corner piece 16 shown in FIG. 5 is placed on the back of the flange portion, and the corner piece of this corner piece 16 and the corner piece of the corner piece of another duct unit are bolted together, and the other holes pass through the flange portion. Duct units are connected by bolts.

[0013]

As described above, according to the first aspect,
Since the volume of the duct unit can be reduced to a very small amount, and the amount of materials used for packing is small, there is an effect that packing costs and transportation costs can be reduced, and construction costs can be reduced.

According to the second aspect of the present invention, packing can be performed by a simple means of attaching an adhesive tape to the flange portion.
Since the unpacking can be performed by a simple means of cutting the adhesive tape, there is an effect that the working efficiency and labor saving are high and the cost is reduced.

According to the third aspect of the present invention, there is an effect that the volume of the duct unit can be rapidly and extremely reduced.

[Brief description of the drawings]

FIG. 1 is a perspective view of a duct unit embodying the present invention.

FIG. 2 is a perspective view showing an example of a seam goby portion.

FIG. 3 is a perspective view showing another example of the seam goby portion.

FIG. 4 is a perspective view showing a packing state.

FIG. 5 is a rear view showing a use state of the corner piece;

[Explanation of symbols]

A Duct 1-4 Wall 1a-4a Flange 5-8 Corner 10,11 Seam goby 15 Adhesive tape 16 Corner piece

Claims (3)

[Claims] 1. A duct unit having four walls continuous through right-angled corners and having flanges bent outward at both ends of each wall, wherein two continuous walls are provided. And the other two continuous wall portions are almost flattened by deforming the bend of the corner portion and overlapped, and a back-to-back flange portion is bonded at an intermediate position of the overlap, Packing structure. 2. The packing structure for a duct unit according to claim 1, wherein the back-to-back flange portions are bonded by bonding an adhesive tape. 3. A duct unit provided with four continuous wall portions via right-angled corner portions and provided with flange portions bent outward at both ends of each wall portion, wherein two continuous wall portions are provided. And a duct unit characterized in that the other two continuous wall portions are superimposed on each other by deforming the bending of the corner portion so as to be substantially flat, and then a back-to-back flange portion is bound at an intermediate position of the overlap. Packing method.