JPH0582126B2 - - Google Patents

Description

[Detailed Description of the Invention] (Technical Field of the Invention) The present invention aims to consolidate and consolidate complex wiring in buildings, factories, etc.
This invention relates to a duct that is simplified and allows easy inspection and wiring changes after installation.

(Technical background of the invention and its problems) Conventionally, as shown in FIG. 6, a cable duct made of aluminum alloy has a duct-like frame body 2 formed by welding an angle 1 made of aluminum alloy. Aluminum alloy plates 3a, 3b, and 3c are riveted to the back side, both sides, and the bottom side of the frame body 2, and an aluminum alloy plate 4 is removably screwed to the top side of the frame body 2. something is known. 5 in the figure indicates a cable separator disposed inside the duct.

By the way, in the duct having such a configuration, the dimensional accuracy of the duct is determined by the dimensional accuracy of the frame body 2, so welding the angle 1 becomes an important operation.

However, in a duct with such a configuration, distortion and warpage of angle 1 that occur during welding,
Another drawback was that it required a long time to correct shrinkage and other problems. In particular, adjustment of dimensional errors due to distortion or shrinkage of angle 1 is performed using aluminum alloy plate 3.
Since it is necessary to cut a, 3b, 3c, and 4 to match the dimensions of the frame body 2, there is a drawback that the work requires a longer time.

In addition, since aluminum welding requires skill, a large number of skilled welders are required for large orders or products with short delivery times, resulting in increased costs.

(Purpose of the Invention) The present invention has been made with attention to the above points, and does not require special skills for assembly work, can be easily assembled by any person, and is advantageous in terms of cable protection. Furthermore, the purpose is to provide a duct that can be easily connected to each other.

(Summary of the Invention) That is, in the duct according to the present invention, four aggregates each having a substantially rectangular cylindrical shape having stepped portions on the outer surface side of the horizontal side portion and the outer surface side of the vertical side portion are arranged at the four corners of the duct cross section. The aggregates are arranged parallel to each other with their step sides facing each other, and each hollow part at both ends of these aggregates has a plate-shaped flat part and a hanging part hanging from this flat part. each of the vertically extending portions of the connecting member having
A horizontal member having a flange portion and a vertically extending portion near the end edge of the horizontal member is disposed between the opposing flat portions of the connecting members. The aggregates are fixed so that they are in contact with each other, and plate materials are attached to the outer surfaces of the resulting duct-like framework bodies, spanning between the opposing step portions of the aggregates. There is.

(Embodiment of the Invention) The present invention will be described below based on the drawings of one embodiment. Figure 1A is a perspective view of the framework that constitutes the duct, Figure B is a front view of the duct, Figure C is a side view of the duct, Figure D is a top view of the duct, and Figure E is an assembled view of the duct. It shows. In FIGS. 1A to 1E, the duct according to the present invention has a duct-like framework 6
and a plate body 7 made of aluminum alloy or the like which is riveted to both sides and the top and bottom sides of this frame body 6, respectively.

The frame body 6 includes four aggregates 8 arranged parallel to each other at four corners of the duct cross section, and eight horizontal aggregates 8 arranged between opposing aggregates 8 at both ends of these aggregates 8. It is composed of members 9 and coupling fittings 17 (see FIG. 5), which will be described later, which connect these horizontal members 9 and each aggregate 8 to each other.

As shown in FIGS. 2A to 3C, the aggregate 8 has step-like steps 13 and 1 on the outer surface of its own horizontal side 13 and on the outer surface of its vertical side 14, respectively.
4, and each step 13, 14 has a first step 13
a, 14a, and second step portions 13b, 14b following the first step portions 13a, 14a, and the inner surface side of the second step portion 13b of the horizontal side portion 13 and the vertical side portion 1.
The inner surfaces of the four second step portions 14b are connected by a gutter-like connecting member 30, and the entire second step portion 14b has a substantially rectangular tube shape. In the figure, 7a indicates an inspection window.

As shown in FIGS. 2A and 2C and FIG. 4, the horizontal member 9 has a flange portion 15 and a vertical side portion 16 hanging near the edge of the flange portion 15. A linear concave groove 15a is formed along the length direction of the horizontal member 9, and first and second step portions 16a, 1 are formed on the outer surface side of the vertical side portion 16, similar to the aggregate.
6b is formed. Both sides of the flange portions 15 of these horizontal members 9 are cut diagonally,
The slope portions 9a of these horizontal members 9 are arranged so as to abut each other at portions where the vertical and horizontal directions intersect. In addition, in the figure, 33 indicates a center groove, and 33b indicates a through hole for duct connection.

Next, the coupling member attached to the hollow part 10 of the aggregate 8 will be explained based on FIGS. 2A and 2C and FIGS. 5A to 5C. In these figures, the coupling member 17 has a first corner of a quadrilateral in plan view cut out into a substantially gutter shape in plan view, and a second corner opposite to this first corner cut out into a substantially rectangular shape in plan view. A planar portion 20 made of a plate made of aluminum alloy, etc., and an edge portion 2 that is vertically disposed on an edge portion 21 of a gutter-like cutout portion of the planar portion 20.
1 and a substantially gutter-like vertical part 22 having the same shape as the flat part 20. On the upper part of the plane part 20, there are vertical sides 23 and lateral sides 24 near the vertical sides 23 and lateral sides 24. Linear convex portions 25 and 26 are formed parallel to the vertical portion 22, and screw holes 29 are formed at a distance from each other in the central portion 22a of the vertical portion 22. In the figure, 27 and 28 indicate through holes formed in the plane portion 20.

Next, a method for assembling the frame body 6 will be described. First, the vertical portions 22 of the connecting members 17 are attached to the hollow portions 10 at both ends of the four aggregates 8, and the central portions 2 of the vertical portions 22 are
2a to the bottom 30a of the connecting member 30 of the aggregate 8.
Connecting member 3
A through hole (not shown) formed in the bottom part 30a of the aggregate 8 is aligned with a screw hole 29 of the vertical part 22, and then both are fixed by screws 31 screwed from the outside of the aggregate 8.

Thus, the aggregates 8 fitted with these connecting members 17 are placed at the four corners of the duct cross section, and the horizontal members 9 are placed between the opposing aggregates 8 at both ends of the aggregates 8 as follows. Attach. That is, first,
When the connecting member 17 is attached to the aggregate 8 as described above, the flat part 2 of the connecting member 17 is attached to the tip of the aggregate 8.
0 will be exposed. Therefore, the horizontal member 9 is placed between the flat parts 20 of these opposing coupling members 17.
, the groove 15a of the flange part 15 is connected to the flat part 2.
0, and the flange portion 15
The through hole 33a formed in the flat portion 20 is aligned with the through hole 27 of the flat portion 20, and the two are connected by a countersunk screw 32. Similarly, the flat portion 20 of the connecting member 17, the half of which is exposed, and the connecting member 1 opposite thereto.
The horizontal member 9 is placed between the flat parts 20 of the flange part 15 of the horizontal member 9, and the concave groove 15a of the flange part 15 is fitted into the convex part 26 of the flat part 20, and the through hole 33 formed in the flange part 15 is
a and the through hole 28 of the plane portion 20, and connect the two with a countersunk screw 32. In this case, the inclined surfaces 9a of the horizontal members 9 that are perpendicular to each other in the flat surface 20 of the coupling member 17 are arranged so as to abut each other. Thereafter, by repeating this operation one after another, it is possible to obtain the overall duct-shaped frame body 6 as shown in FIG. In the figure, numeral 37 indicates a binding girder disposed within the duct, and the cables laid within the duct are bundled at predetermined intervals by this binding girder.

An aluminum alloy plate 7 is attached to the outer surface of the frame 6 obtained as described above, spanning the opposing aggregates 8 in the following manner. That is, first, the second step 13b (or 1
4b) Platy reinforcing members 35 made of aluminum alloy are set in between, and these are fixed to the second step portions 13b (or 14b) of the aggregate 8 with rivets 35a. Next, the first of the opposing aggregates 8
Aluminum alloy plates 7 are set across between the stepped portions 13a (or 14a) of the horizontal member 9 and between the first stepped portions 16a of the vertical side portion 16 of the horizontal member 9. 8 and the first step 16a of the horizontal member 9, respectively.

In the above, the reason why the vertical part 22 is formed in the connecting member 17 and attached to the hollow part 10 of the aggregate 8 is to easily ensure the straightness of the connecting part between the connecting member 17 and the horizontal member 9. It is. Further, convex portions 25 and 26 are provided on the upper surface of the flat portion 20 of the coupling member 17.
The reason why grooves 15a are formed on the lower surfaces of the horizontal members 9 and the two are fitted together is to easily ensure the squareness of the corners when the horizontal members are assembled. From the above point of view, it is desirable that the coupling member 17 be manufactured by aluminum die casting in order to ensure high precision dimensions. In the above embodiment, a convex portion is formed in the flat portion 20 of the coupling member 8, and a concave groove is formed in the horizontal member 9, but the present invention is not limited to this. The groove may also be formed as a convex portion in the transverse member 9.

Further, the reason why the horizontal member 9 is formed by the flange portion 15 and the vertical side portion 16 vertically provided near the edge portion of the flange portion 15 is as follows.
This is to form a connecting flange for easily connecting the duct to the end of the duct when the duct is assembled. Therefore, in the present invention, a pair of ducts to be connected are brought into contact with the flange portions of the horizontal member, and a bolt (not shown) is inserted into the duct connection through hole 33b formed in the flange portion and tightened with a nut. Thus, a duct with a desired length can be obtained.

(Effects of the Invention) As described above, in the present invention, the framework can be assembled and fixed, and the plate can be assembled and fixed on the outer surface of the framework with rivets or the like.
Assembling the duct does not require any special skills and can be easily assembled by any person, and since the aggregate is in a so-called hollow shape, it has improved strength compared to conventional angle materials. In addition to eliminating distortion, the caulking part of the rivet used to attach the plate protrudes into the hollow part of the aggregate, which is advantageous in terms of cable protection.Furthermore, the thickness of the plate made of aluminum alloy etc. If it is made thinner than the first step of the material and the side edge of the board is in contact with the first step of the aggregate, it has the advantage that the fabric surface and edges of the board will not protrude from the outer surface. . Furthermore, in the present invention, since the flange portion of the horizontal member forms a flange for duct connection, a duct of a desired length can be easily obtained.

[Brief explanation of drawings]

Fig. 1A is a perspective view of a framework constituting a duct according to the present invention, Fig. 1B is a front view of the duct, Fig. 1C is a side view of the duct, Fig. 1D is a top view of the duct, and Fig. 1E is a Figures 2A to 2C are explanatory diagrams of main parts showing the state of duct assembly, Figure 3 is an end view of the aggregate, Figure 4 is an end view of the horizontal member, and Figure 5A is the connection. FIG. 6 is a top view of the member, FIG. 6B is a side view of the coupling member, FIG. 6C is a perspective view of the coupling member, and FIG. 6 is a side view of a conventional duct. 6... Frame body, 7... Plate body, 8... Aggregate, 9...
...Horizontal member, 17...Connecting member.

Claims (1)

[Claims] 1 Four aggregates each having a substantially rectangular cylindrical shape having stepped portions on the outer surface side of the horizontal side portion and the outer surface side of the vertical side portion are parallel to each other with the stepped portion sides of the aggregates facing the four corners of the duct cross section. The hanging parts of the connecting member having a plate-shaped flat part and a hanging part hanging from the flat part are installed in each hollow part at both ends of these aggregates, and A horizontal member having a flange portion and a vertically extending portion near the end edge of the horizontal member is disposed between the opposing flat portions of the connecting members. The aggregates are fixed in such a way that they are in contact with each other, and plate materials are attached to the outer surfaces of the resulting duct-like framework bodies, spanning between the opposing step portions of the aggregates. duct.