JPH0350341Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to a duct device having an improved connecting end.

[Conventional technology]

Conventionally, this type of duct device has integrally formed a plurality of flanges 1, 1' exhibiting a square shape at the connecting edges of duct toys A' having quadrilateral cross sections to be connected. Matching common plate flange 1,
1', a corner member 11 having a bolt hole 10 at the corner is fixed by spot welding, and a recess is formed in the abutment surface of the opposing flanges 1, 1' in the longitudinal direction of the flanges 1, 1'. forming a groove 26;
After fitting the string-shaped sealing material 25 into this groove 26, the opposing flanges 1, 1' are brought into contact with each other, and the joint edges 6, 6 of both the flanges 1, 1' are brought into contact with each other.
The adherend member 3 has a flat C-shaped cross section.
Corner members 11, 11 that are clamped at 0 and facing each other
1 and 2, in which they are fastened together with bolts 27, are known.

[Problem that the invention attempts to solve]

Since the above-mentioned conventional type did not have the partial joint member 21, the work of tightening the bolts between the corner members 11 and 11 and the work of clamping the flanges 1 and 1 with the attached member 30 cannot necessarily be performed easily and smoothly. There are drawbacks, especially when the flange is long.

[Means for solving problems]

The present invention attempts to solve the above-mentioned problems by equipping the flange with a partial joint member 21.

[Embodiment] In the embodiment shown in the figure, flanges 1 and 1' having a square shape are integrally formed at the connecting edges of the upper, lower, left, and right walls of a duct toy having a quadrilateral cross section.
By folding the horizontal portion 2 of 1′ in half and overlapping the outer half 3 of the same horizontal portion 2 with the lower surface of the inner half 4, the upper fitting edge of the corner member 11 and partial joint member 21, which will be described later, is fitted. The grooves 5 and joint edges 6 are formed, and protrusions 7 are bulged out on the upper, lower, left and right wall surfaces of the duct toy on lines close to and parallel to the connection edges to form the lower side of corner members 11 and partial joint members 21, which will be described later. A fitting groove 8 for the fitting edge is formed, and a metal plate is separately used to form a square-shaped corner member 11 having a bolt hole 10 in the bent portion. 1
2 and the vertical portion 13, an outwardly facing upper fitting edge 14 and an outwardly facing lower fitting edge 15 are folded, and the horizontal portion 12 and the vertical portion 13 of the corner member 11 are attached to the adjacent flanges 1, 1. ', and the corner member 1
1 is forcibly inserted between the joint edge 6 and the wall surface of the duct to fit the upper fitting edge 14 and the lower fitting edge 15 into the fitting grooves 5 and 8, and then A corner member 11 is fixed to the corner portion of the corner member 11, and separately, a metal plate is used to attach a hook-shaped covering portion 18 having an inwardly bent portion 17, 17' at both ends and a hook-type covering portion 18 having an inwardly bent portion 17, 17' at both ends. A partial joint member 21 is constituted by an upright portion 19 extending vertically downward from the tip edge of the portion 17 and an outwardly bent edge 20 connected to the lower edge of the upright portion 19. One inwardly bent portion 17 and the outwardly bent edge 20 of the joint member 21 are used as an upper fitting edge 22 and a lower fitting edge 23, and the partial joint member 21 is disposed on the outside of the flange 1 and the partial joint is The rising portion 19 of the member 21 is forcibly pushed between the joint edge 6 and the wall surface of the duct toy to fit the upper fitting edge 22 and the lower fitting edge 23 into the fitting grooves 5 and 8. , and then fix the partial joint member 21 to the middle part of the flange 1 (at this time, the covering part 1 of the partial joint member 21
8 and the other inwardly bent portion 17 are in a slightly raised state in preparation for later work. ).

In addition, in the figure, 25 is a sealing material, and 26 is a sealing material 2.
5 is a fitting groove, 26' is a relief groove, 27 is a bolt, 28 is a nut, and 29 is a small hole.

[Effect]

In other words, the work of joining a duct toy with a corner member 11 and a partial joint member 21 as shown in the figure and a duct toy' which has a corner member 11 but not a partial joint member 21 is performed using these duct toys. , A' are in communication and the flanges 1,
The sealing material 25 is inserted between the flanges 1 and 1' with their palms pressed together, and the covering part 18 of the partial joint member 21 is pressed down to correct the raised part and the other side is bent inward. The flanges 1 are temporarily held together by attaching the binding part 17 to the lower surface of the joint edge 6 of the flange 1 of the duct toy', and in this holding state, the corners are brought into the above-mentioned palms-in position. Insert the bolt 27 into the bolt hole 10 of the member 11 and tighten with the nut 28, and then tighten the joint edges 6, 1' on the flanges 1, 1' of both duct toys, A'.
6 is clamped by an adherend member 30 having a flat C-shape in cross section.

[Effect of idea]

In the present invention, as described above, the intermediate part of the flanges 1, 1 is temporarily held by the partial joint member 21, and then the corner members 11, 11 are bolted together and the attached member 30 is used to tighten the flanges 1, 1. 1
Of course, it is highly effective in achieving both of these tasks easily and smoothly, but in particular, in the present invention, the fixing of the partial joint member 21 to the flange 1 is performed using a so-called How to fit it in.

[Brief explanation of drawings]

Fig. 1 shows a conventional duct device and is a perspective view of the main parts, Fig. 2 is a sectional view taken along the line A-A in Fig. 1, and Fig. 3 shows the duct device of the present invention. FIG. 4 is a sectional view taken along the line B--B in FIG. 3, and FIG. 5 is a sectional view taken along the line B'--B' in FIG. 3. A, A'...Duct, 1,1'...Flange, 2
...Horizontal part, 3... Outer half, 4... Inner half, 5... Fitting groove, 6... Joint edge, 7... Projection,
8... Fitting groove, 10... Bolt hole, 11... Corner member, 12... Horizontal part, 13... Vertical part, 1
4... Upper fitting edge, 15... Lower fitting edge, 17,
17'...Inwardly bent part, 18...Covering part, 19...
... Standing part, 20 ... Bent edge, 21 ... Partial joint member, 22 ... Upper fitting edge, 23 ... Lower fitting edge,
25... Sealing material, 26, 26'... Concave groove, 27
...Bolt, 28...Natsuto, 29...Small hole, 3
0...Adherent member.

Claims (1)

[Scope of utility model registration request] A duct toy with a quadrilateral cross section has round-shaped flanges 1 and 1' at the connecting edges of the upper, lower, left, and right walls, and a partial joint member 21 (described later) is attached to the lower surface of the horizontal portion of each flange 1, 1'. A partial joint member, which will be described later, is formed by forming a fitting groove 5 for a fitting edge and a joint edge 6, and protruding ridges 7 on the upper, lower, left, and right wall surfaces of the duct toy on lines close to and parallel to the connecting edge. 2
A fitting groove 8 is formed for the lower fitting edge of the duct 1, and an inwardly bent portion 1 is formed at both ends separately from the duct toy.
7, 17', a hook-shaped covering part 18 having a square cross section, a raised part 19 extending downward from the tip edge of one of the inwardly bent parts 17, and a raised part 19 connected to the lower edge of the raised part 19. A partial joint member 21 is formed with an outward bent edge 20, and one inward bent portion 17 and an outward bent edge 2 of this partial joint member 21.
0 is the upper fitting edge 22 and the lower fitting edge 23,
The upper fitting edge 14 is arranged by disposing the partial joint member 21 on the outside of the intermediate portion of the flange 1 and forcing the raised portion 19 of the partial joint member 21 between the joint edge 6 and the wall surface of the duct toy. A duct device characterized in that a partial joint member 21 is fixed to the intermediate portion of the flange 1 by fitting the lower fitting edge 15 into the fitting grooves 5 and 8.