JPH0726626Y2 - Duct hanging fittings - Google Patents

Description

[Detailed description of the device]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a hanging metal fitting for a duct used for air conditioning and smoke exhaust of a building.

[0002]

2. Description of the Related Art Conventionally, when a circular duct for air conditioning or smoke exhaust is hung from the ceiling surface of a building, a hanging metal fitting as shown in FIGS. 14 and 15 is used.

This hanging fitting comprises a clamp band (1) for holding a circular duct (D) and a substantially inverted U-shaped hanger frame (3) for fastening to the hanging bolt (2). The pair of joining pieces (1a) (1b) bent and raised from the clamp band (1) and the leg pieces (3a) (3b) of the hanger frame (3) sandwiching the joining pieces (1a) and (1b) respectively have round holes (4) for receiving bolts. ) (5) is formed correspondingly, and a nut (6) for fastening with the hanging bolt (2) is welded and integrated on the flat top surface of the hanger frame (3).

When suspending the duct (D), both joining pieces (1a) and (1b) of the clamp band (1) wound around the duct (D) and the joining pieces (1a) (1a) ( Both legs (3) of the hanger frame (3) sandwiching 1b)
While the a) and (3b) are fastened with the horizontal through bolts (7) and their fixing nuts (8), the hanger frame (3) is attached to the hanging bolts (2) hanging from the ceiling surface (C) of the building. ) The welding nut (6) is fastened.

[0005]

However, in the hanging metal fitting having the above structure, the clamp band (1) and the hanger frame (3) thereof are, as it were, independent parts. Moreover, both joint pieces (1a) of the clamp band (1)
The bolt receiving round hole (4) opening in (1b) and the bolt receiving round hole (5) opening in both leg pieces (3a) (3b) of the hanger frame (3) must be exactly aligned. Since the horizontal bolt (7) cannot be penetrated, it is necessary to have the duct (D) until then, and the bolt (7) and nut (8) must be held by both hands. Together with this, the work of fastening the clamp band (1) and the hanger frame (3) is extremely complicated and requires heavy labor. Since the work is so-called work at a high place by standing on a stepladder, it is extremely dangerous and cannot be performed by one person.

When the duct (D) is hung from the ceiling surface (C) and the installation height of the duct (D) is adjusted correctly, the horizontal through bolt (7) is attached to the receiving round hole ( 4) It must be completely extracted from (5). Since the nut (6) for fastening with the hanging bolt (2) is integrally welded to the top surface of the hanger frame (3), the hanger frame (3) and the clamp band (1) are fastened. This is because the hanging operation cannot be performed with respect to the hanging bolt (2) in this state. From that meaning, it is a work of re-doing, and it is still troublesome.

Further, the hanger frame (3) of the above-mentioned hanging fitting is substantially inverted U-shaped, and its pair of leg pieces (3a) (3).
Both joint pieces (1a) of the clamp band (1) according to b)
Since (1b) is sandwiched, it is not possible to secure a large height adjustment allowance (h) for the duct (D), and the dimension is practically limited to about 25 to 30 mm.

Therefore, when it becomes necessary to adjust and install the duct (D) higher than this size, the lower end of the hanging bolt (2) is cut to make it shorter, or the hanging bolt is shorter. Must be replaced with bolt (2).
Needless to say, it is inferior in work efficiency and labor saving at the site.

[0009]

DISCLOSURE OF THE INVENTION The present invention intends to improve such a problem, and as a duct hanging metal fitting useful for this purpose, a pair of joint masts are provided from both ends of a clamp band for holding the duct. Of the connecting guide mast, and one of the connecting masts has a slide guide elongated hole that can receive the shaft portion of the horizontal through bolt for fastening both connecting masts and extends vertically. In the other joining mast which is formed in the state of being left in the state, a key hole corresponding to the slide guide long hole is formed in the remaining joint mast, and the upper part thereof is the large-diameter head portion of the horizontal through bolt, or a nut screwed to this. As a round hole for receiving the shaft portion of the horizontal through bolt, and as a long hole for receiving the shaft portion of the horizontal through bolt, the opening is formed in a keyhole shape communicating with each other and is bent from one or the other of the joining masts. And a horizontal hook strip, is characterized in that the receiving for round hole of the hanging bolts hanging from a ceiling surface of a building an opening formed.

According to the above construction of the present invention, the slide guide elongated hole for receiving the shaft portion of the horizontal through bolt is opened in either one of the two joint masts which stand upright from the separated both ends of the clamp band. Since they are formed, they can be maintained in the provisionally assembled tightened state by penetrating the horizontal through bolts and screwing and fastening the nuts.

Since a keyhole-shaped keyhole corresponding to the slide guide elongated hole is formed in the other joining mast, a large-diameter head portion of the horizontal through bolt or a large hole is formed in the upper circular hole. It is possible to join the other joining mast to the one joining mast described above so as to receive the nut, and the shaft portion of the horizontal through bolt forms the lower part of the key hole in the fastening state of both joining masts. Since it slides down along the hole and the slide guide elongated hole, there is no risk of separation.

Further, a hook piece is bent horizontally from either one of the two joint masts, and a round hole for receiving a hanging bolt hanging down from the ceiling surface of the building is formed in the hook piece. Even if the two joint masts are still fastened with the horizontal through bolts and nuts, they can be freely moved up and down with respect to the hanging bolts to adjust the installation height of the ducts, which is remarkably excellent in workability on site. .

[0013]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described in detail below with reference to the drawings. Referring to FIGS.
(D) is a circular duct made of a certain length of metal spiral tube or glass wool, and (10) is a suspension bolt for the duct (D), which is hung integrally from the ceiling surface (C) of the building in advance. ing.

Reference numeral (11) is a clamp band having a constant width (W) for holding the duct (D), which is made of a metal plate such as a zinc iron plate or a stainless steel plate and is slightly smaller than the thickness of the duct (D). It is bent into a circular shape.

Reference numerals (12) and (13) denote a pair of joining masts which are integrally erected outward from the both ends of the clamp band (11) separated from each other along the diametrical direction. The height changes are given to H1) and (H2), and one of the joining masts (12) which stands upright is used for hanging, and the hanging bolt (10) is connected to the upper end of the mast main body (12a). The hook pieces (12b) orthogonal to each other are bent horizontally. (14) is the hook piece (1
2b) is a round hole for receiving a hanging bolt formed in the opening.

At this point, in the figure, one of the suspending masts (12) which stands upright is attached to the clamp band (1).
By bending a metal plate having the same constant width as 1) into a U-shape when viewed from the front, the lower end of the mast body (12a) is used as a mounting piece (12c) to the clamp band (11).
It is joined to the inner surface of one end of the clamp band (11) which is cut off, and is fixed and integrated by spot welding, rivets (15) or the like.

Then, the other joining mast (13) which stands upright low is bent from a metal plate having the same constant width as the clamp band (11) into an L-shape when viewed from the front so that one side of the joining mast ( 13a), the standing mast body (12a) of the suspension joining mast (12) is erected in a back-to-back state, and the remaining other side is used as an attachment piece (13b) to the clamp band (11). 11) Separated and joined to the inner surface of the other end, fixed and integrated by spot welding, rivets (16) and the like.

In this way, the two joint masts (12) (1
If the mounting pieces (12c) and (13b) of 3) are separated and integrated into both ends of the clamp band (11) from the inside, the step (17) is the step (17).
There is an advantage that it works as a resistance against the positional deviation of the duct (D) with respect to 1) and a resistance against idling, and can prevent this.

Further, since the clamp band (11) and the joint masts (12) and (13) of the clamp band are independent of each other in advance, when the change in the thickness of the duct (D) is encountered, the clamp band (11) is clamped. It is sufficient to change only the diameter and the width of the band (11), and there is an advantage that the joining masts (12) and (13) can be used in general.

However, a pair of joining masts (12) and (13) separate from the clamp band (11) are connected to the clamp band (11) by the spot welding or the riveting (15) (1).
6) and the like, the clamp band (1) is replaced with the pair of the joining masts (12) and (13).
1) Separation It is acceptable to bend and raise from both ends continuously and vertically.

A pair of joining masts (12) which stand up integrally from both ends of the clamp band (11) which is separated.
(13) is the mast main body (12a) and the joining piece (13).
In the joined state with a), one horizontal through bolt (1
8) and the nut (19),
A key hole (20) for receiving the horizontal through bolt (18) has a joining piece (1) of the short joining mast (13).
An opening is formed in 3a).

As is apparent from FIG. 7, the key hole (20) has a keyhole shape in which a large-diameter round hole (20a) in the upper portion and a small-diameter long hole (20b) in the lower portion communicate with each other. The round hole (20a) allows the large-diameter head (18a) of the horizontal through bolt (18) or a nut (19) screwed to the bolt (18) to be received. In addition, the bolt (18) has a small diameter elongated hole (20b) extending along the remaining vertical direction.
The shank (18b) can be received.

On the other hand, the mast body (12a) of the tall joining mast (12) joined to the joining piece (13a) has a small diameter slide guide length corresponding to the entire opening of the key hole (20). The hole (21) is also formed to be elongated in the vertical direction so that the shaft portion (18b) of the horizontal through bolt (18) can be received.

Therefore, as suggested from FIG. 7, the shaft portion (18b) of the horizontal through bolt (18) is first passed through the slide guide elongated hole (21) on the tall joint mast (12) side, and Under the provisionally assembled state in which the nut (19) is screwed into the shaft portion (18b), a large diameter circular hole (20a) on the side of the joint mast (13) that is short with respect to the nut (19).
Can be inserted, and the pair of joining masts (1
2) It is possible to keep the (13) in a joined state, so that the shaft portion (18b) of the horizontal through bolt (18) has a long hole (20b) on the side of the short joining mast (13) and a tall joining mast. There is no risk that the bolt (18) will fall off along the slide guide elongated hole (21) on the (12) side as shown in FIGS.

That is, it is not necessary to disassemble the horizontal through bolts (18) and nuts (19) one by one, and the clamp band (11) can be screwed in the temporary tightened state.
In order to fasten and fix both the joint masts (12) and (13), the result is that the both joint masts (12) and (13) can be set in the penetrating state. In that case, the vibration absorbing packing (not shown) of the duct (D) may be interposed in a pre-attached state on the joint surfaces of the two joint masts (12) and (13).

In FIG. 7, a nut (19) screwed to the horizontal through bolt (18) is attached to a short joint mast (13).
It is designed to be received in the large circular hole (20a) of the above, but by inserting the bolt (18) into the slide guide elongated hole (21) of the tall joint mast (12) in the opposite direction, It is also possible for the head (18a) of the bolt (18) to be received in the large round hole (20a) of the short joining mast (13).

In any case, the head (18a) or nut (19) of the horizontal through bolt (18) is retracted so as not to interfere with the hanging bolt (10) orthogonal to the hook piece (12b). Preferably. When adjusting the installation height of the duct (D) with the lid, the vertical height (H1) of the tall joint mast (12) is used as the height adjustment allowance (H), and the size is as large as possible (actually, approximately). This is because it can be utilized under 100 mm).

Further, in the figure, the tall joint mast (12) to be fastened to the suspension bolt (10) by the hook piece (12b) as a fixed side is the mast main body (of the fixed side joint mast (12)). By forming the slide guide elongated hole (21) in 12a), the horizontal penetrating bolt (18) is tentatively assembled with the nut (19) so that it is more stably penetrated and held in the guide elongated hole (21). A keyhole-shaped keyhole (20) is formed correspondingly to the movable short mast (13) which is fixed so as to be fixed to the fixed mast (12).

However, as long as the large round hole (20a) of the key hole (20) communicates with and opens directly above the small long hole (20b), on the contrary, on the side of the tall joint mast (12). A key hole (20) may be formed in the mast main body (12a), and a slide guide slot (21) may be formed in the joining piece (13a) on the side of the short joining mast (13).

In the above construction, when the duct (D) is hung from the ceiling surface (C) of the building, the clamp band (11) is attached to the duct (D) as apparent from FIGS. ) Is hung up and held, and then the hook piece (12b) of the tall joint mast (12) which stands upright from the clamp band (11) is hung from the ceiling surface (C). ), And a pair of upper and lower nuts (22) and (23) are fastened to the suspension bolt (10) so that the suspension bolt (10) is suspended and fixed so as not to fall off.

In this case, the hanging bolt receiving round hole (14) opening in the hook piece (12b) is a so-called stupid hole, and a pair of upper and lower nuts (22) screwed with the hanging bolt (10). (23) is independent of the joining mast (12) that also includes the hook piece (12b), so that the installation height of the duct (D) can be adjusted by rotating this.

Then, the tall joint mast (1
After inserting the horizontal penetrating bolt (18) into the slide guide elongated hole (21) on the 2) side and screwing the nut (19) into the provisionally tightened state, the bolt (18) is inserted into the key hole (21). The other short joining mast (13) is joined as it is received in 20).

Then, the horizontal through bolt (18)
Slides and falls by itself, and both joint masts (12) (1
3) The bolt (1
It is sufficient to tighten the nut (19) against 8). The bolt (18) and nut (19) are tightened almost completely in advance, and the bolt (18) is tapped from above while the joint masts (12) and (13) are penetrated. It doesn't matter if you press down and press fit. The diameter of the clamp band (11) is the duct (D)
This is because the bolts (18) and nuts (19) that receive the expansion urging force are not likely to loosen because they have a size slightly smaller than the thickness of the.

Further, when it is necessary to adjust the installation height of the duct (D) after the suspension construction, a pair of upper and lower nuts (22) fastened to the suspension bolts (10).
It suffices to loosen (23) and raise and lower the clamp band (11) of the duct (D) along the hanging bolt (10) as suggested by the comparison between FIG. 9 and FIG.
Both joint masts (12) of the clamp band (11)
It is not necessary to disassemble (13) by the operation of extracting the horizontal through bolt (18).

Next, FIG. 11 shows a first modified embodiment of the present invention, in which the hook piece (12b) of the joining mast (12) standing upright from the clamp band (11).
When fastening the bolts in a state orthogonal to the suspension bolts (10), a pair of upper and lower nuts (2) described in the basic embodiment are used.
2) One nut (24) instead of (23) is swageably swaged to the hanging bolt receiving round hole (14) of the hook piece (12b).

According to this, since the nut (24) is preliminarily held by the hook piece (12b) and can be freely rotated, the nut (24) and the hanging bolt can be freely rotated. There is an advantage that the fastening work with (10) and the adjustment work of the installation height in the duct (D) can be performed more easily and efficiently.

FIG. 12 shows a second modified embodiment of the present invention, in which a pair of the joining masts (12) and (13) are separated from the clamp band (11) at substantially the same height from both ends. And the hook piece (12b) bent horizontally from one of the joining masts (12) is projected to the penetrating state of the window (25) corresponding to the other joining mast (13). There is.

According to this, since the hook piece (12b) penetrates the window (25), even if the weight of the duct (D) is received, there is no danger of losing and deforming upwards, and the both joint masts. (12) As a result that there is no possibility of wobbling of (13), the slide guide elongated hole (21) and the key hole (2
0) can be correctly matched and matched with itself.

Further, FIG. 13 shows a third modified embodiment of the present invention, in which the clamp band (11) is fixed to the right side.
By bending into a square or other regular polygon, the regular polygonal duct (linear duct) (D) can be held. The present invention can be embodied also as such a hanging metal fitting.

Since the other constructions of the first to third modified embodiments of FIGS. 11 to 13 are substantially the same as those of the basic embodiment of FIGS. 1 to 10, FIGS. 1
Only the corresponding code with 0 is entered, and the detailed description thereof is omitted.

[0041]

As described above, in the hanging fitting of the present invention, due to its structure, the clamp band (1) for holding the duct (D) is provided.
1) A pair of joining masts (12) from both ends of separation.
(13) is made to stand upright integrally, and the joining mast (12) (1) is attached to one of the joining masts (12).
The shaft portion (1) of the horizontal through bolt (18) for fastening 3)
8b) can receive a slide guide slot (21),
A key hole (20) corresponding to the slide guide elongated hole (21) is formed in the other joining mast (13) that is opened in a state of extending in the vertical direction, and the upper portion thereof has the horizontal through bolt ( A round hole (20) capable of receiving the large-diameter head (18a) of 18) or a nut (19) screwed to this head.
a) and as a long hole (20b) whose lower portion can receive the shaft portion (18b) of the horizontal through bolt (18), the opening is formed in a keyhole shape communicating with each other, and one or the other of the joining masts ( Since the horizontal hook piece (12b) bent out from 12) is formed with the round hole (14) for receiving the hanging bolt (10) hanging from the ceiling surface (C) of the building, it was described at the beginning. The problems of the prior art can be completely improved.

That is, in the case of the present invention, the clamp band (1
One of the joint masts (12) and (13) integrally standing upright from the separated both ends of 1) is provided with a horizontal through bolt (1) for fastening the joint masts (12) and (13).
Since the slide guide elongated hole (21) for receiving the shaft portion (18b) of 8) is formed, the nut (19) is screwed and fastened to the bolt (18) which is inserted into the slide guide elongated hole (21), so as to connect both of them. It is possible to keep the tightening condition of the preliminary assembly.

And then, the other joining mast (13)
May be joined to the one joining mast (12) described above. Then, the round hole (20a) of the key hole (20) formed corresponding to the other joining mast (13) has a large head (18a) or nut (19) of the horizontal through bolt (18). ) Will be accepted, and the bolt (1
Since the shaft portion (18b) of 8) continues to fall downward along the long hole (20b) of the key hole (20) and the slide guide long hole (21), both joint masts (12) (1)
Since 3) can be completely fastened and fixed by itself, the construction workability at the site is remarkably excellent.

In this case, particularly when the structure of claim 2 is adopted, the hook piece (1) to be fastened with the suspension bolt (10).
Since the fixed joint mast (12) provided with 2b) is formed with the slide guide elongated hole (21) for receiving the shaft portion (18b) of the horizontal through bolt (18), the preliminary temporary assembly is performed. In the tightened state, the bolts (18) and nuts (19) inserted through the elongated holes (21) can be kept more and more stable.

Further, if the construction of claim 4 is adopted, the clamp band (11) and both joint masts (12) (1)
Clamp band (11) because 3) is independent
It is possible to cope with the change in the thickness of the duct (D) simply by changing the diameter and the band width of the two joint masts (12) (13).
Has the effect of being able to be used universally.

Further, since the mounting pieces (12c) and (13b) of both joint masts (12) and (13) are separated and fixed to the both ends of the clamp band (11) from the inside, the mounting pieces (12c) are fixed. ) (13b) and the inner surface of the clamp band (11), the step (17) generated between the clamp band (11) and the clamp band (11) is effective in preventing displacement of the duct (D) and idling.

According to the present invention, as is apparent from the structure of claim 1, the horizontal hook piece (12b) bent out from either one of the two joining masts (12) and (13) is the ceiling surface of the building ( C) is perpendicular to the hanging bolt (10) and the hook piece (12b) has a round hole (14) for receiving the hanging bolt (10). (18) and Natto (19)
In the fastening and fixing state of both joining masts (12) and (13), the clamp band (11) can be freely moved up and down along the hanging bolt (10),
There is also an effect that the installation height of the duct (D) can be easily adjusted.

In particular, if the structure of claim 3 is adopted,
Since the hook piece (12b) is bent out from the upper end of the joining mast (12) which stands upright, the height adjustment allowance (H) of the duct (D) can be increased more and more.

Further, if the construction of claim 5 is adopted, a separate nut (22) is used for fastening the hook piece (12b) of the joining mast (12) and the suspension bolt (10).
It is not necessary to grip (23), and the hook piece (12
Since it is sufficient to rotate the nut (24) crimped to b), there is an effect that the height adjustment work of the duct (D) can be performed more easily and efficiently.

[Brief description of drawings]

FIG. 1 is a perspective view showing a suspension fitting of the present invention.

FIG. 2 is a perspective view seen from the opposite direction of FIG.

FIG. 3 is a front view of FIG.

FIG. 4 is a right side view of FIG.

FIG. 5 is a left side view of FIG.

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

FIG. 7 is a perspective view showing a fastening operation process of both joining masts by a horizontal through bolt and a nut.

FIG. 8 is a side view showing a suspended construction state of the duct.

9 is an enlarged sectional view taken along line 9-9 of FIG.

FIG. 10 is a sectional view showing a height adjustment state of the duct corresponding to FIG. 9;

FIG. 11 is a partially enlarged sectional view showing a first modified embodiment of the present invention.

FIG. 12 is a sectional front view showing a second modified example of the same.

FIG. 13 is a sectional front view showing a third modified embodiment.

FIG. 14 is an exploded perspective view showing a conventional hanging fitting.

FIG. 15 is a front view showing a conventional hanging construction state by the hanging metal fitting.

[Explanation of symbols]

 (10) -Suspension bolt (11) -Clamp band (12) -Joining mast (12a) -Mast main body (12b) -Hook piece (12c) -Mounting piece (13) -Joining mast (13a) -Joining piece (13b) ) ・ Mounting piece (14) ・ Holding bolt receiving round hole (18) ・ Horizontal through bolt (18a) ・ Head (18b) ・ Shaft (19) ・ Nut (20) ・ Key hole (20a) ・ Round hole (20b) -Long hole (21) -Slide guide long hole (C) -Ceiling surface (D) -Duct

Claims (5)

[Scope of utility model registration request] 1. A pair of joining masts (1) from both ends of a clamp band (11) for holding a duct (D).
2) The (13) is vertically erected outward, and one of the joining masts (12) is connected to the horizontal through bolt (1) for fastening both joining masts (12) and (13).
The slide guide elongated hole (21) capable of receiving the shaft portion (18b) of 8) is formed so as to extend in the vertical direction, and the slide guide elongated hole (21) is formed in the remaining other joining mast (13). ) Corresponding to the key hole (20), the upper part of which has a large diameter head (18) of the horizontal through bolt (18).
a) or a round hole (20a) capable of receiving a nut (19) screwed thereto, and an elongated hole (2) whose lower portion can receive the shaft portion (18b) of the horizontal through bolt (18).
0b), the opening is formed in a keyhole shape that communicates with each other, and the horizontal hook piece (12b) bent from one or the other joining mast (12) is hung from the ceiling surface (C) of the building. Round hole (14) for receiving bolt (10)
A hanging metal fitting for a duct, characterized in that the opening is formed. 2. The slide guide elongated hole (21) is formed in the fixing mast (12) on the fixed side while the bent joint mast (12) of the hook piece (12b) is used as the fixed side. The suspension metal fitting for a duct according to claim 1, wherein a key hole (20) is formed in the movable joint mast (13) to be joined to the side joint mast (12). 3. A hook piece (12b) from the upper end portion of the joining mast (12) which stands upright by changing the vertical height (H1) (H2) of both joining masts (12) (13). By bending out the joint mast (12), the standing height (H1) is set as the height adjustment allowance (H) so that the installation height of the duct (D) can be adjusted. The hanging metal fitting for the duct according to claim 1. 4. The clamp band (11) is provided with the joining masts (12) and (13) separated from the clamp band (11) independently of each other, and the mounting pieces (12c) and (13b) respectively bent out from the lower ends thereof. Separate from both sides and join from both sides,
The hanging metal fitting for a duct according to claim 1, characterized in that it is fixed and integrated by spot welding, rivets (15) (16) or the like. 5. A nut (24) fastened to the hanging bolt (10) is freely swaged in a round hole (14) for receiving the hanging bolt (10) formed in the hook piece (12b). The hanging metal fitting for the duct according to claim 1, which is attached.