JPH0826950B2 - Duct flange mounting device - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a flange mounting device for a duct used for air-conditioning a building, exhausting smoke, and the like. And, of course, at the production plant,
It is an improvement that allows quick installation work even at the construction site.

[0002]

2. Description of the Related Art As a flange mounting device for this type of duct, Japanese Patent Laid-Open No. 54-75619 is known.

[0003]

However, there is a known problem.
In the embodiment shown in FIGS.
Of the first and second modified cross-section leg sides (8) and (9) that divide (6)
Intimate polymerization of walls (12) (13) (15) (16)
While pressing and integrating into the state, the relative positional deviation
Coupling means (14) such as caulking to prevent
(18) has to be added, so the work
It is complicated and complicated, and requires long hours and heavy labor.

In this respect, in the embodiment shown in FIGS.
The means (14) (18) are always shown clearly.
No, but the modified cross section leg (1011) (1015)
Outside of passage parts (duct) (1) to passage wall (body surface) (7)
In the part facing from the side, it is rolled up firmly and rolled.
The fact that it remains relatively stationary.
Yes.

Therefore, the outside of the passage wall (body surface) (7)
Even with only the part facing from the side, the modified section leg (101
1) (1015) is a laminated state of at least three layers in total
Flange (102) (202) if not folded back
The passage parts (ducts) (1) can be installed stably and with high strength.
It cannot be attached and maintained, and it is still troublesome in the folding process.
Not only is it miscellaneous, but it also becomes heavy. this thing
The above passage parts (ducts) (1) are becoming larger and longer.
The more it extends, the more remarkable it becomes, and the inside of the passage wall (body surface) (7)
Also, the clamping force with the part facing from will be significantly imbalanced.
Inevitable.

Further, the leg portions (1011) (10) of the irregular cross section
15) A portion facing the passage wall (body surface) (7) from the outside
Compared to the minutes, the part facing from the inside is also very short,
The depth of insertion into the passage part (duct) (1) is shallow
Therefore, it is applicable to large and long passage parts (ducts) (1).
If it does, it cannot withstand the bending force due to its weight and
The mouth is easy to open, which may cause air leakage.

Further, in the above-mentioned known invention, the restraining protrusion (1
8) (19) is cut into the passage wall (body surface) (7) and
The wall of the passage (body surface) (7)
Despite being in the state of creating an opening in the plug-in slit
Filling the inside of (6) with an airtight sealant or caulking agent
Because it is not described, it causes air leakage
That is inevitable. Particularly, in the embodiment shown in FIG.
(18) When the pair of (19) is displaced from each other,
Since it is coined and formed, its insertion slit (6)
Even if it is filled with a temporary sealant for sealing
The taste.

[0008]

SUMMARY OF THE INVENTION
The purpose of this is to improve the
Scattered distribution with multiple wedge claws arranged in a horizontal line near the opening edge
And, while protruding outward from the body surface,

[0009] Separate and independent flan that serves as a joint for the duct
J is bent from a single metal plate into a basic L-shaped cross section
The side of the duct along the radial direction of the duct.
Joined mast that projects only a certain height and stands up, and the other side that remains
Along the longitudinal direction of the duct from the base end of the joining mast
Each set as a mounting base that overhangs for a certain length,

Continuing by reversing from the tip of the mounting base
The inner surface of the duct to make it meander like
Similarly to the inner base lip, the cover that covers the body surface from the outside.
By extending and extending the water base lip
The above mounting bases on the adjacent layers of both base rips.
At least two cushion spaces are formed between them
Stacked in a total of three layers of corrugated form,

From the inner base lip to the outer base
The direction of the folded-back part to the slip and the above-mentioned joining mast
Corner connection ang with constant opening width between front and back
As a concave groove for receiving

The protruding end of the above-mentioned joining mast is provided with an eaves-like shape.
As a top hook, a fixed length in the direction of the mounting base
Only by continuously bending it out,
Between the top and bottom facing the groove, the corner of the duct
-Can receive the connection angle as a non-fallable restraint
And set the relationship to

The extension tip of the outer base lip is
As a hook for receiving the wedge claws,
Inner base by folding back inward
By closing the oppression with the lip,
The above-mentioned outer base lip side cushion bag
Fill the duct with the airtight sealant for the duct,

Both base lips of the above mounting base
Align the folded back tips in the same position as each other, or
Inner base lip longer than outer base lip
By protruding it, it can be displaced in the front and rear steps,

Folding tips of both base rips
Use the flanges to connect the
To the open end of the duct while resisting the above-mentioned elastic force.
When it is inserted, the wedge claws of the duct and its receiving hooks
Are locked together irremovably, and
The relationship is set so that it is kept airtight by the sealant.
The first feature is that

A plurality of wedge claws are provided near the open end of the duct.
As a scattered distribution lined up in a horizontal row, and from the body surface
While protruding inward,

A separate and independent flan that serves as a joint for the duct
J is bent from a single metal plate into a basic L-shaped cross section
The side of the duct along the radial direction of the duct.
Joined mast that projects only a certain height and stands up, and the other side that remains
Along the longitudinal direction of the duct from the base end of the joining mast
Each set as a mounting base that overhangs for a certain length,

Continuing by reversing from the tip of the mounting base
The outer surface of the duct from outside so that it will meander
Similarly to the outer base lip, which covers the body surface from the inside.
The inner base lip and the
The above mounting bases on the adjacent layers of both base rips.
At least two cushion spaces are formed between them
Stacked in a total of three layers of corrugated form ,

Outer portion of the mounting mast and the mounting base
At the corner where the base lip intersects, a coat with a constant opening width
The groove for receiving the connection angle is formed as a depressed state.
As the outer base lip is overhanging,
Bend and raise the part once in an outward step,

The protruding end of the above-mentioned joining mast is provided with an eaves-like shape.
As a top hook, a fixed length in the direction of the mounting base
Only by continuously bending it out,
Between the top and bottom facing the groove, the corner of the duct
-Can receive the connection angle as a non-fallable restraint
And set the relationship to

The extension tip of the inner base lip is
As a hook for receiving the wedge claws,
Outer base by folding back outward
By closing the oppression with the lip,
The above-mentioned inner base lip side cushion bag
Fill the duct with the airtight sealant for the duct, and
And

Both base lips of the mounting base are
Align the folded back tips in the same position as each other, or
Inner base lip longer than outer base lip
By protruding it, it can be displaced in the front and rear steps,

Both base lips (15a) (15b)
As the insertion port between the folded back end parts in
Move the mounting base of the flange to the open end of the duct as above.
When inserted while resisting the pressure force, the wedge claws of the above duct
The catch hook catches itself and cannot be removed.
Moreover, the above-mentioned insertion port was kept airtight by the sealant.
The second characteristic is that the relationship is set as described below.
is there.

[0024]

That is, according to the above configuration of the present invention, the flange
An inner base whose mounting base covers the duct body surface from the inside.
An outer base that also covers the body surface from the outside with a slip
From the lip to the two adjacent layers
Layered into a total of three layers of corrugated to form the pace
Therefore, the above-mentioned Japanese Patent Laid-Open No. 54-75619
Only for the part that covers the body surface of the duct from the outside
However, the modified cross-section leg has a total of 3 or 4 layers.
It is folded back and pushed into a flat fixed state where it cannot be displaced.
There is no need for pressure integration, and it is extremely simple and efficient.
Not only can it be used for mass production and weight reduction,
Even though the corrugated form of only 3 layers in total is enough,
Two cushion spaces secured between adjacent layers
The duct surface is evenly distributed from the inside and outside,
In addition, it is possible to pinch it with high strength, and
Effectively in relative distortion and flexure deformation with the lunge
It is possible to maintain a stable and durable mounting condition.
It

Moreover, as a hook for receiving the above-mentioned wedge claws
Of the outer base rip folded back inward
The extension tip is elastically biased with the inner base lip.
The outerwear that has been closed into a bag by the closing
-Duct in the cushion space on the base lip side
Since the airtight sealant is also filled, the duct
The wedge claws of this were cut and raised by rough processing and separated.
Or, if the above-mentioned mounting base has an insertion port
Opening due to bending deformation or pulsation due to internal pressure on the blast
Even if you do, use the sealant to remove the air leak.
It is possible to prevent it with certainty
There are no restrictions on usage.

Also, both base lips of the mounting base are
It is not flattened and integrated like a known invention, but next to it
Two cushion spaces are defined between the facing layers.
Therefore, the depth is as deep as possible, which is the constant height associated with the stacking.
Recessing the groove for receiving the corner connection angle
And the eaves-shaped tongue bent out from the tip of the joining mast.
In cooperation with Tupfutsuku, the space between the two
More stable backing of corner connection angle
It can be fitted and restrained on the ground, and its fall prevention effect is enhanced.
It is extremely reasonable as a configuration for that
Target.

[0027]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The concrete constitution of the present invention will be described in detail below with reference to the drawings.
1 to 13 show the first embodiment of the present invention.
(D) is zinc iron plate, stainless steel plate, other
A certain length of duck that is shaped from a metal plate into a square in front view
And can maintain the airtight state as the air line
As far as possible, it is the whole from two pairs of L-shaped metal plate pieces facing each other.
The frame may be integrated into a physical quadrangle, or a piece of metal
By continuously bending from the plate, it is shaped into a quadrangle.
I don't mind.

(11) is with an open end of the duct (D)
While located close to each other, each of them goes outward from the four sides of the body surface (12).
It has multiple wedge claws that have been machined to form a fixed interval.
Line up in a horizontal row as a scattered distribution state that keeps the pitch (P)
I have. Moreover, each of the wedge claws (11) is as shown in FIGS.
As is clear from the above, the disconnecting opening edge (1
As you move backward from 3), the section rises taller and becomes almost straight.
It has the shape of a rectangular triangle, and relative to this,
It is easy to insert the mounting base of
After that, it has become a wedge that never leaves.
It

The wedge claw (11) as described above is, for example, hand-held.
Cut the duct (D) with a punching tool (not shown)
The body surface (12) is sandwiched from the separation opening edge (13).
And insert the punching tool, and then close the punching tool.
By doing so, it is possible to process by protruding as the wedge shape.
it can.

(L1) is the open end of the duct (D)
Of the edge (13) and the apex of action (11a) of the wedge claw (11)
It suggests the distance, and this distance (L1) is
Corresponds to the depth at which a punching tool can be inserted. This interval
A plurality of wedge claws (11) are placed on a virtual line that maintains the distance (L1).
They are distributed in an orderly manner, which is why production plants
While sending the duct (D) to the automatic machine installed in
A wedge claw (11) is continuously attached to the body surface (12) by an automatic machine.
It is also possible to mechanically project.

In the illustrated embodiment, the wedge claw (11) is
The standing height dimension is almost equal to the plate thickness of the duct (D) itself.
Approximately 1 mm and cannot be separated from the body surface (12)
Although protruding in a continuous state, the apex of action of the wedge claw (11)
The part (11a) is
Cut and raised from the body surface (12) of the cut (D)
However, there is no problem. Sealant or corki described below
The ducting agent (D) is kept airtight by the anti-static agent.
It has to be processed with high precision.
It is highly productive because it does not have the restrictions that it must have.

(F) is a joint for piping of the duct (D)
A separate and independent flange that is
Duck from one sheet of the same metal plate with a forming machine
Tension (D) with a certain height (H1) along the radial direction
Joint mast (14) standing upright and duct
Mounting base of constant length (L2) along the longitudinal direction of (D)
(15) Bending into a basic L-shaped cross section with
Have been.

Joint mast (14) of the flange (F)
Has a so-called single structure, and
Eaves-shaped top hook in the direction of the mounting base (15)
(16) is continuously bent by a certain length (L3)
I have.

Moreover, the top hook (16) is at the tip.
It is folded back to the outside or inward from the
By doing so, in addition to being reinforced as a double structure,
The protruding tip is literally a hook type and slightly inside
Is bent in the opposite direction, so that after the duct (D)
Can take the corner connection angle described above in a non-fallable manner
In addition, the tip of the top hook (16) is used as a reinforcement brim.
Then, attach the clamp metal fitting (C) of the flange (F) to this.
It is also possible to lock it firmly and reliably
It

The clamp metal fittings (C) are adjacent to each other.
Also for fastening and fixing flanges (F) of G (D)
Therefore, as shown in FIG.
Both joint masts (14) of adjacent flanges (F) are capped
And a metal plate body (17) bent in an inverted U shape,
From one of the plate walls facing each other
Bolt (18) and the other plate wall to the metal plate
It should be orthogonal to the ridge line of the inverted U shape in (17).
All of them are bent inward at right angles and
Symmetrical array centered on the axis of the bolt (18)
With a pair of locking pieces (19) bent and raised in a stationary state
Is preferred.

The lid is closed and the push bolt (18) is screwed.
The joint mast (14) of the adjacent flanges (F)
When tightening each other, the tightening force is
With the stop (19), it is supported evenly and horizontally
And the tip of the push bolt (18) and both
At the total of 3 points including the tip of the locking piece (19), the above
Bonding mast (14) of flange (F) to each other
It can be pinched and fixed, and its rattling and wobbling
This is because it is possible to eliminate the possibility that

On the other hand, the mounting base of the above-mentioned flange (F)
(15) is a duct from the base end of the joining mast (14)
Overhang in the longitudinal direction of (D) by the above-mentioned constant length (L2)
It is not limited to a simple single structure flat plate,
As is clear from 1, the continuous meandering core of the metal plate
By being folded and laminated as a rugate form,
Cylinder surface of the upper Symbol duct (D) (12) disconnecting the navel open end
Can be inserted from the rim (13) and
It is designed so that the fixed strength can be increased even when
It

That is, in FIGS.
a) is connected from the protruding tip of the mounting base (15).
As it is continuously inverted, it is folded back and extended outward.
It is an inner base lip and it has two layers of folds.
The interior divided by the space is the cushion space (S1).
And, as a result, it is oppressive to the body surface (12) of the duct (D).
To cover the body surface (12) from the inside so that
become. Outward of the inner base lip (15a)
The folded part is the lower lip of the insertion port, which will be described later.
And is bent in a smooth arc shape.

Extension of the inner base lip (15a)
The long tip reaches the upright position of the joining mast (14).
Without a certain width (W) opening between them
I have. And, as if it continues to meander from the tip,
Reversed as a laminated state on the inner base lip (15a)
By extending it back in the direction, the duct
Outer base cover that covers the body surface (12) of (D) from the outside
It is shaped as a cup (15b).

That is, the flange (F) mounting base (1
5) is the inner base lip (15a) and the outer
The total including the base lip (15b) is 3 in total.
Layered into a corrugated shape that bends from the layers into an S-shape
And the three layers extend substantially in parallel.
I have.

Furthermore, the outer base lip (15b)
The extension tip continues to turn inward against the meandering direction.
The body surface of the duct (D) when folded back to the state
Receiving the wedge claws (11) standing outward from (12)
Correspondingly formed as a hook (20) for stopping. That
Inner fold back of outer base lip (15b)
Is the upper lip of the insertion port, which will be described later.
It is bent in a nice arc shape .

Moreover, the outer base lip (15)
The catch hook (20) forming the extended tip of b) is
Is folded inward for a certain length (L4) of
With the inner base lip (15a)
It is kept up. Therefore, the mounting base (1
5) is at the turning point of this catch hook (20)
However, only a partial total of four layers is formed. Also above
The outer base lip (15b) is a partition wall
The inner base lip (15a) that forms the
Between the outer base lip (15b) and one layer
Means that the sealed bag will be separated and the outer bag
The space inside the closed bag on the slip (15b) side is a cushion space.
As (S2), the duct (D) is elastically attached to the body surface (12).
Can be circumscribed. The bag-shaped cushion space
Inside the space (S2), the airtight sealant for the duct (D)
Or a caulking agent (21).

This sealant (21) is the above-mentioned mounting base.
Pouring during continuous folding back of the sleeve (15)
And the filling state into the cushion space (S2)
As a result, the wedge claw (11) is cut and raised on the duct (D).
Even if it is processed, its opening can be used as a sealant (21).
Therefore, it can be completely sealed.

Mounting base (15) for the flange (F)
Is the outer base lip (15b)
Receiving hook (20) and inner base lip (1
5a) as the insertion port (O) between
Insert it into the open end of the duct (D) while resisting the biasing force.
And then, as is clear from Figures 4, 7 and 11,
A wedge claw standing outward from the body surface (12) of the duct (D)
(11) and its receiving foot on the mounting base (15) side
(20) is locked by itself and never disengages.
It will be maintained in a steady state.

In that case, in the first embodiment of FIGS.
Is it the outward folding part of the inner base lip (15a)?
Lower lip and inward of outer base lip (15b)
And the upper lip made from the tree in fold-back portion, smooth circle any of the
By forming a bend in an arc, they can be collinear with each other.
Arrange them in line and cut off the duct (D) opening edge (1
3) It is designed to be inserted securely, but its lower lip
Longer than the upper lip, as suggested by Figures 14-16.
By extending it, both base lips (15a)
Displace the folded back end of (15b) in a step difference between front and back.
Is effective. Cover and insert more smoothly
In addition to being operable, the flange (F) allows duct (D)
Will be able to more firmly and firmly hold the opening of the
Because it can counter the strain deformation and flexural deformation of the duct (D).
is there. This means that if the duct (D) becomes larger and longer
The more you do, the more useful it becomes.

Inner in the mounting base (15)
From the extension tip of the base lip (15a) to the outer base
The boundary bending part following the slip (15b) is a joint mast.
Although it has been stated above that the vertical position of (14) is not reached,
As a result, the base end of the mounting base (15) is
Accompanying lamination of both base lips (15a) (15b)
Recessed groove (22) of constant depth facing the constant height (H2)
However, with the top hook (16) of the joining mast (14)
It is depressed due to the facing relationship.

With the concave groove (22) of the mounting base (15)
The joint mast (14) with the top hook (16)
Depending on the person, the corner connection angle (A) of the duct (D)
Stablely catching it and rolling it from the joining mast (14).
It is designed so that it cannot be overturned.

That corner connection angle (A) says
Rather, the adjacent corners of the square duct (D)
It is a metal fitting for connecting and integrating the same, and the above flange
Attached to the joint mast (14) of (F) in a backing state.
Corners of the pair of vane plates (23) and the duct (D)
-The whole with the corner plate piece (24) facing the part
Punched from a single steel plate as a typical L-shape
I have.

In that case, as extracted in FIGS.
Bol open to central portion medium substantially above the corner plate piece (24)
To the periphery of the through hole (25) for receiving
With a square head (26a) or a square nut (27) of the toe (26)
A protrusion (28) for detent that can be engaged is provided, and
A corner connecting ann adjacent to the periphery of the convex element (28)
Through hole (25) for receiving the bolt of the glue (A)
The appropriate rod or other operating tool
It is effective to form the through hole (29) for insertion as well.
It is.

Then , as is clear from FIGS.
Penetration for receiving bolt of the above corner connection angle (A)
Insert one connecting bolt (26) into the through hole (25),
Perform the tightening operation of the fastening nut (27).
Connect the adjacent corners of the duct (D) together
When connecting, the connecting bolt (26) and the square nut (2)
7) There is a risk that the convex (28) will rotate around
Therefore, it is reliably blocked, resulting in a quick and safe connection.
Because you can work.

In addition, due to the work, the corner connection angle should be avoided.
(A) Bolt receiving through hole (25) Match each other
However, it is difficult to insert the connecting bolt (26) into it.
Even if you do, accept the operation tools that open to the periphery
Insert a suitable rod or other operating tool into the through hole (29) for
Enter the corner connection angle of adjacent ducts (D)
By correcting the movement of (A) so that it is relatively twisted,
Easily match the above bolt receiving through holes (25)
The workability in adjusting the centering is also improved.
Will be done.

Next, FIGS. 14 and 15 show a second embodiment of the present invention.
FIG. 4 shows a wedge claw (11) due to its construction.
From the body surface (12) of the duct (D) to the first embodiment described above.
It is processed by protruding so that it stands up in the opposite direction.
It

On the other hand, a flap which becomes a joint of the duct (D)
For the flange (F), the base end of the joining mast (14)
Mounting base protruding from the section along the longitudinal direction of the duct (D)
The tip of the sleeve (15) is first folded back inward
By extending it, it is separated from the two layers of the turn.
Outer bay with cutout space (S2)
In addition to being shaped as a slip (15b), its outer jacket
Continue to extend the extension tip of the slip (15b) in the opposite direction.
By extending it back,
1 layer inner base rib substantially parallel to the tab (15b)
As a tape (15a), it is laminated in a total of three layers.
It

That is, the mounting base of the flange (F)
As (15) meanders the metal plate continuously,
-Base lip (15b) and inner base lip (1
5a) and a rounded, almost Z-shape
It is folded back and made into a corrugated form consisting of three layers in total.
It is shaped, and after all the outer base lip
(15b) covers the body surface (12) of the duct (D) from the outside.
The inner base lip (15a) is also
The surface (12) is adapted to be covered from the inside.

Then, the inner base lip (15
The extended tip of a) is for receiving the hook (2) of the wedge claw (11).
0), fold in the outward reversal state against the above meandering direction.
The outer base lip (15
It is kept in a biased state with b). Above mounting base
(15) is the turning point of the catch hook (20)
Only in part, the laminated form of a total of 4 layers is partially formed.
That is why.

Therefore, the inner base lip is
A sealed bag will be formed in (15a), of which
Part that is elastically inscribed in the body surface (12) of the duct (D).
It can function as a task space (S1).
However, inside the cushion space (S1)
Duct (D) airtight sealant or caulking agent (2
1) is filled.

Also, the inner base lip (15a)
The receiving hook (2) of a certain length (L4)
0) and the outer base lip (15b) described above
The space is used as an insertion port (O) to resist the above-mentioned oppressing force.
While mounting the flange (F), attach the mounting base (15) to the duct.
It can be inserted into the open end of (D). The plug
The wedge claw (11) of the duct (D) and its removal.
The catch hook (20) of the attached base (15)
Needless to say, the two are locked in an inseparable manner.

Further , in the second embodiment of FIGS.
The outer base lip (15b) has its mounting base (1
At the base end of 5), it is bent and raised once in an outward step shape.
By doing so, the corner connection will be relatively depressed with this
The groove for receiving the angle (22) has the above-mentioned joining mast.
Vertical position facing the top hook (16) of (14)
The groove (22) is formed by the relationship.
Up to the position where it contacts the groove bottom of
Compared with the first embodiment, the inner base lip (15a) of
It has been extended for a long time.

The other constructions in the second embodiment are as follows.
Since it is substantially the same as the first embodiment described above,
No. 4 and 15 only need to enter the corresponding symbols to those of FIGS.
The detailed description thereof will be omitted.

Further, FIGS. 16 and 17 show the third and fourth embodiments of the present invention.
An example is shown, and the second embodiment of FIGS.
Basically the same as the example, but partially
Different to

That is, in the third embodiment of FIG.
Of the mounting base (15) protruding from the base end of the gland (14)
Partial partition on the outer base lip (15b)
By pushing the ribs (30) outward,
Between the cutting rib (30) and the joining mast (14),
Corner connection engraving facing the top-down hook (16)
The groove (22) for receiving the glue is defined.

Further , in the fourth embodiment of FIG. 17, the mounting base
Attach the outer base lip (15b) of (15) to the above
Bending and raising in a step-like shape outwardly higher than that of the second embodiment
As a result, a deep groove (2
2) is divided into the groove bottom of the groove (22)
As a relatively short length that does not reach, the above mounting base
Extend the inner base slips (15a) of (1 5)
ing.

Other configurations in the third and fourth embodiments are as follows.
Since it is substantially the same as the second embodiment, its FIG.
It is only necessary to enter the corresponding code in FIGS.
A detailed description thereof will be omitted, but any of the above examples
However, the mounting base (15) of the flange (F) is
Inner base lip (15a) and outer base lip
3 layers in total, which are S-shaped or Z-shaped from the tab (15b)
It is laminated in the corrugated form and its adjacent layers
Two cushion spaces (S1) and (S2) are formed between them.
The flange for that duct (D)
The mounting strength of (F) is also significantly affected, and there is a risk of unauthorized deformation.
There is no.

In the illustrated embodiment, a rectangular duct
(D) and its joint flange (F) were explained.
However, the above flange (F) corresponds to the round duct (D)
By winding it into a circular shape when viewed from the front, the round duct
Of course, the present invention can be applied to (D).

[0065]

As described above, according to the present invention, the duct (D) is used.
With a flange (D) opening end of duct (D)
A plurality of wedge claws (11) are arranged in a row in a row in a scattered distribution state.
And then projecting outward from the body surface (12)
One

A separate and independent joint for the duct (D)
Flanges (F) are made from one metal plate and have a basic L-shaped cross section.
By bending it into a mold, one side of the duct (D)
Stand up by a certain height (H1) along the radial direction.
Joining mast (14), and the remaining other side is the joining mast
Along the longitudinal direction of the duct (D) from the base end of (14)
As the mounting base (15) that overhangs for a certain length (L2)
Each of them,

Reverse from the tip of the mounting base (15)
And the body surface of the duct (D) so that it continuously meanders.
Inner base lip (15) that covers (12) from the inside
a) and an outer jacket that also covers the body surface (12) from the outside.
To turn back and extend the slip (15b)
From the mounting base (15)
Two cushions between the adjacent layers of (15a) and (15b)
Space (S1) (S2)
Layered into a total of three layers of corrugated form,

From the inner base lip (15a)
Fold back to outer base lip (15b)
Between the front and back facing the joining mast (14),
Recessed groove for corner connection angle with constant opening width (W)
As (22), it is divided into a depressed state,

Overhanging tip of the joining mast (14)
As the eaves-shaped top hook (16), using the mounting base (1
5) Continuous bending out in the direction of existence by a certain length (L3)
To remove the top hook (16) and the groove.
Between the upper and lower sides facing (22), the duct (D)
Make the corner connection angle (A) in a restrained state that cannot be overturned.
And set the relationship so that you can take it,

Extension of the outer base lip (15b)
The long tip portion receives the hook (20) of the wedge claw (11).
As a result, it folds back in the reverse direction, which is opposite to the meandering direction
As a result, the inner base lip (15a) is repressed.
The bag is closed by energizing it and the bag is closed by the closing.
Cushion space on the water base lip (15b) side
Into (S2), sealant (2 for airtightness of duct (D)
1) filled,

Both bases in the mounting base (15)
The fold back tips of the lips (15a) and (15b) are
Align them in the same position or their inner base rips
(15a) longer than outer base lip (15b)
By protruding it, it can be displaced in the front and rear steps,

Both base lips (15a) (15b)
And the insertion end (O)
The mounting base (15) of the flange (F).
Inserted into the open end of the ( D) while resisting the above-mentioned elastic force.
The wedge claw (11) of the duct (D) and its receiving
The hook (20) engages with the hook (20) in a non-separable manner, and
The above-mentioned insertion port (O) is not sealed by the sealant (21).
Since the relationship is set so that it will be kept dense, at the beginning
There is an effect that the above-mentioned problems of the prior art can be improved.

That is, according to the above configuration of the present invention, the franc
The mounting base (15) of J (F) is the body surface of the duct (D)
Inner base lip (15) that covers (12) from the inside
a) and an outer jacket that also covers the body surface (12) from the outside.
Two from the slip (15b) between the adjacent layers
Total of space (S1) (S2)
Since it is laminated in a three-layer corrugated form, at the beginning
Duct (1) as described in JP-A-54-75619
Even for the part that covers the body surface (7) of the
The modified cross-section leg sides (1011) (1015) have a total of three layers or
It is folded back into a multi-layered structure of 4 layers, and the position cannot be displaced.
Extremely simple without pressing and integrating into a flat fixed state
Can be efficiently folded and is useful for mass production and weight reduction
Not only that, but the legs are in corrugated form with only 3 layers in total.
However, the two blacks secured between the adjacent layers above
Duct by the space (S1) (S2)
The body surface (12) of (D) can be said to be even from both inside and outside, and evenly.
It can be clamped with high strength and its duct (D)
Distortion and flexural deformation, etc. between the flange and the flange (F)
Is also effectively prevented, maintaining a stable and durable mounting condition
To get.

In that case, according to the above-mentioned known invention, the leg of the modified section is used.
Body surface of duct (1) in (1011) and (1015)
The part that covers (7) from the inside is the outside of the body surface (7) as well.
Compared to being dimensioned shorter than the part covered from the book
According to the above configuration of the invention, the inner base lip (15
a) and the outer base lip (15b)
The ends are aligned with each other, or
-The base lip (15a) is the outer base lip (1
Since it is overhanging longer than 5b), the duct (D)
The open end of the can be held deeply and stably,
Do not insert the slots (O) of the slips (15a) and (15b).
Such as by bending deformation of the defect (D), it is not positively expanding
It's not there. As a result, to the large and long duct (D)
It is remarkably effective in application.

Moreover, the receiving foot of the wedge claw (11)
Outer folded back inward as a hook (20)
-The extension tip of the base lip (15b) is
It is closed to the elastic force with the slip (15a).
The outer base rip that was made into a bag by the closing
In the cushion space (S2) on the (15b) side,
(D) airtight sealant (21) is also filled
Therefore, the wedge claw (11) of the duct (D) should be rough.
Cut and raised by processing to separate, or the above mounting
The outlet (O) of the base (15) should be in the duct (D).
Opening due to bending deformation or pulsation due to internal pressure on the blast
Even if you do, the sealant (2
1) can be surely prevented by the duct (D)
There are no restrictions on the production and processing of
Yes.

Also, both base rips of the mounting base (15)
(15a) and (15b) are flat and heavy like the above-mentioned known invention.
Two pieces between adjacent layers that are not integrated
Because the section space (S1) (S2) is divided,
Depth as much as possible relative to the constant height (H2) associated with the stacking
Indented groove for receiving corner (20)
Can be bent from the tip of the joining mast (14).
Together with the eaves-shaped top-down hook (16),
(D) corner connection between the upper and lower sides facing each other
Insert the angle (A) into a more stable backing state
To be able to bundle up and to have a fall prevention effect
It is remarkably rational as a structure for that.

The above-mentioned various effects are described in claim 2.
The configuration can also achieve almost the same.

[Brief description of drawings]

FIG. 1 is an overall schematic front view showing a disassembled state of a duct according to a first embodiment of the present invention and a joint flange thereof.

2 is an overall schematic front view showing the assembled state of FIG. 1. FIG.

3 is a partially enlarged perspective view of FIG.

FIG. 4 is a partially enlarged perspective view of FIG.

FIG. 5 is a front view of FIG. 4;

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

7 is a sectional view taken along line 7-7 of FIG.

FIG. 8 is a perspective view showing an extracted clamp metal fitting of a flange.

FIG. 9 is an enlarged perspective view showing an extracted disassembled state of a flange and a duct.

FIG. 10 is a side sectional view of FIG.

FIG. 11 is a side sectional view showing a state in which the flange corresponding to FIG. 10 is inserted.

FIG. 12 is a perspective view showing an extracted corner connection angle of a flange.

13 is a perspective view of a corner connection angle viewed from the rear side of FIG.

FIG. 14 is a perspective view showing a second embodiment of the present invention corresponding to FIG.

FIG. 15 is a side sectional view showing a state in which the flange corresponding to FIG. 14 is inserted.

16 is a side sectional view showing a third embodiment of the present invention corresponding to FIG.

FIG. 17 is a side sectional view showing a fourth embodiment of the present invention.

[Explanation of symbols]

 (11) ・ Wedge claw (12) ・ Body surface (14) ・ Joining mast (15) ・ Mounting base (15a) ・ Inner base lip (15b) ・ Outer base lip (16) ・ Top hook (20) ・ Receiving hook ( 21) · Sealant (22) · Recessed groove (A) · · Corner connection angle (C) · · Clamp metal fittings (D) · · Duct (F) · · Flange (O) · · Insertion port (H1) · Constant height Sa (S1), cushion space (S2), cushion space (L2), fixed length

Claims (2)

[Claims] 1. A plurality of wedge claws (11) are arranged in a row in a row in the vicinity of an open end of a duct (D), and are protruded outward from a body surface (12) thereof. By bending an independent flange (F), which is a joint of the duct (D), from a single metal plate into a basic L-shaped cross section, one side of the flange (F) has a constant height along the radial direction of the duct (D). is (H1) and only tension out Shi Shideritsu joining the mast (14), leaving the other side of the junction mast (14)
Are defined as attachment bases (15) protruding from the base end portion of the duct (D) along the longitudinal direction of the duct (D) by a fixed length (L2), and are continuously meandered by reversing from the tip end of the attachment base (15). As described above, the inner base lip (15a) that covers the body surface (12) of the duct (D) from the inside, and the outer base lip (1) that also covers the body surface (12) from the outside.
5b) are sequentially folded back and extended to extend the mounting base (15) to both base rips (15a) (15).
b) Two cushion spaces (S
1) (S2) and laminated to the corrugated form of a total 3 layers is Ru made ward, outer base from the inner base slips (15a)
Folding part to the slip (15b) and the above-mentioned joining mast
A constant opening width between the front and rear facing (14)
(W) Corner connection Angle receiving groove (22)
As a result, the protruding end of the joining mast (14) is formed into an eaves-like tongue.
How the mounting base (15) exists as the hook (16)
By continuously bending out a fixed length (L3)
Between the top hook (16) and the groove (22).
Corner connection of duct (D) between the upper and lower sides facing each other
Can receive angle (A) as a restrained state that cannot be overturned
With related set so that, on the extended tip portion of the outer base slips (15b)
As a catch hook (20) for the wedge claw (11), by folding back in an inwardly inverted state opposite to the meandering direction,
Closed with the elastic pressure applied to the inner base lip (15a)
The outer base that is made into a bag by closing the bag
Inside the cushion space (S2) on the lip (15b) side
Fill the duct (D) with the airtight sealant (21)
And, both Besuritsupu in the mounting base (15) (15
a) Align the folded back ends of (15b) at the same position as each other.
Or the inner base lip (15a)
Overhang longer than the water base lip (15b)
Displace it to the front and back by a step difference, and fold both base lips (15a) (15b).
When the mounting base (15) of the flange (F) is inserted into the open end of the duct (D) while resisting the elastic force, the duct ( D) wedge claw (11) and its hook (2)
0) are have engaged locks engagement in irremovably own Dzuto, and the feed write
The mouth (O) was kept airtight by the sealant (21)
A flange mounting device for a duct, characterized by being set as described below. 2. A plurality of wedge claws near the open end of the duct (D).
(11) as a scattered distribution lined up in a horizontal row, and
Separate and independent flange that protrudes inward from the body surface (12) and serves as a joint for the duct (D)
Fold (F) from a single metal plate into a basic L-shaped cross section
By bending, one side of the duct (D) in the radial direction
A jointing machine that projects a certain height (H1) along the
Strike (14) and the remaining other side is the joining mast (14)
A fixed length from the base end of the duct along the longitudinal direction of the duct (D)
Fixed as mounting bases (15) that project only (L2)
Therefore , the mounting base (15) is continuously flipped over from the tip.
Outside the body surface (12) of the duct (D) so as to make it meander.
Same as the outer base lip (15b) that covers from the side
Inner base lip (1 that covers the body surface (12) from the inside
5a) is sequentially folded back and extended so that the above mounting
Attach the base (15) to both base lip (15a) (15
b) Two cushion spaces (S
1) In a corrugated form with a total of 3 layers (S2)
When laminated, the joint mast (14) and the outer surface of the mounting base (15) are laminated.
At the corner where the base lip (15b) intersects.
Recessed groove for corner connection angle with constant opening width (W)
As (22) is divided as a collapsed state, its out
Once outside the halfway part of the base lip (15b)
Bending and raising in a stepwise direction, the protruding end of the joining mast (14) is shaped like an eaves
As a Pufutsuku (16), the presence direction of the mounting base (15)
By continuously bending out a fixed length (L3)
Between the top hook (16) and the groove (22).
Corner connection of duct (D) between the upper and lower sides facing each other
Can receive angle (A) as a restrained state that cannot be overturned
And set the extended tip of the inner base lip (15a) above.
As the catch hook (20) for the wedge claw (11),
By folding back to the outward reversal state opposite to the meandering direction,
Closed to the elastic base with the outer base lip (15b)
The inner base that has been made into a bag by closing the bag
Inside the cushion space (S1) on the lip (15a) side
Fill the duct (D) with the airtight sealant (21)
And, both Besuritsupu in the mounting base (15) (15
a) Align the folded back ends of (15b) at the same position as each other.
Or the inner base lip (15a)
Overhang longer than the water base lip (15b)
Displace the front and rear by a step, and both base rips
(15a) and (15b) between the folded tip portions
As the insertion port (O) and attach the flange (F)
Attach the base (15) to the open end of the duct (D) with the above elastic force.
Wedge claw of the duct (D) when inserted while resisting the power
(11) and its catch hook (20) disengage independently
Locked together, and the insertion port (O) is a sealer.
The relationship is set so that it is kept airtight by the module (21).
A duct flange mounting device characterized in that