JPH0687793U - Duct hanging fittings - Google Patents

Abstract

(57) [Summary] [Purpose] To provide a suspension fitting that helps work efficiency and labor saving when suspending a duct on the ceiling surface of a building. [Structure] Clamp band (1 that holds the duct (D)
1) A pair of joining masts (12) from both ends of separation.
The horizontal hook piece (1) in which the (13) is vertically erected outwardly and bent from one of the joining masts (12).
2b) hanging bolt (1) hanging from the ceiling surface (C)
0), so that both joint masts (12)
A slide guide elongated hole (21) for receiving a shaft portion of a horizontal through bolt (18) for fastening (13) is formed in one of the joining masts (12) and the horizontal through bolt (18) is formed. A key hole (20) through which a round hole (20a) for receiving the head or nut (19) of the bolt and a long hole (20b) for receiving the shaft portion of the bolt (18) communicate with each other,
It was formed corresponding to the other joining mast (13).

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a hanging metal fitting for a duct used for air conditioning and smoke exhaust of a building.

[0002]

[Prior art]

 Conventionally, when a circular duct for air conditioning or smoke exhaust is installed in a suspended state from the ceiling surface of a building, suspension fittings as shown in FIGS. 14 and 15 have been used.

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

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) ( The leg pieces (3a) and (3b) of the hanger frame (3) sandwiching 1b) are fastened with the horizontal through bolt (7) and its fixing nut (8), while hanging from the ceiling surface (C) of the building. The welding nut (6) of the hanger frame (3) is fastened to the bolt (2).

[0005]

[Problems to be solved by the device]

 However, in the hanging metal fitting having the above-mentioned structure, the clamp band (1) and the hanger frame (3) thereof are, as it were, separated and independent. Moreover, the bolt receiving round hole (4) opening in both the joining pieces (1a) (1b) of the clamp band (1) and the bolts opening in both leg pieces (3a) (3b) of the hanger frame (3). The horizontal bolt (7) cannot be penetrated unless the receiving round hole (5) is correctly aligned. Therefore, it is necessary to have the duct (D) until then. ) And the nut (8) must be gripped with both hands, which is extremely troublesome in terms of the work of fastening the clamp band (1) and the hanger frame (3) together. Since the work is a 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 then the installation height is properly adjusted, 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 suspension bolt (2) is welded and integrated on the top surface of the hanger frame (3), the hanger frame (3) and the clamp band (1) are fastened. This is because the hanging bolt (2) cannot be pivotally operated in this state. From that point of view, it is a work to be redone, and it is still troublesome.

Further, the hanger frame (3) of the hanging metal fitting is substantially inverted U-shaped, and the pair of leg pieces (3a) and (3b) of the hanger frame (3) are used to connect both joining pieces (1a) (1b) of the clamp band (1). Since it is sandwiched between them, it is not possible to secure a large height adjustment allowance (h) for the duct (D), and the size is actually only about 25 to 30 mm.

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

[0009]

[Means for Solving the Problems]

 The present invention intends to improve such a problem, and as a duct hanging metal fitting useful for that purpose, a pair of joint masts are erected outwardly and integrally from the separated both ends of the clamp band that holds the duct. Then, a slide guide elongated hole capable of receiving the shaft portion of the horizontal through bolt for fastening the both joint masts is formed in one of the joint masts so as to extend in the vertical direction, and the other remains. The joint mast has a key hole corresponding to the long hole of the slide guide, a top part of the key hole is a large diameter head of the horizontal through bolt, or a round hole capable of receiving a nut screwed with the head part, and As a long hole whose lower part can receive the shaft portion of the horizontal through bolt, an opening is formed in a keyhole type communicating with each other, and a horizontal hook piece bent from one or the other of the joining masts is formed. It is characterized in that the receiving for round hole of the hanging bolts hanging from the ceiling surface of the object has form openings form.

According to the above-mentioned configuration of the present invention, the slide guide elongated hole for receiving the shaft portion of the horizontal through bolt is provided on either one of the two joint masts that stand upright from the separated both ends of the clamp band. Since the opening is formed, the nut can be screwed and fastened by penetrating the horizontal through bolt therethrough, and both of them can be maintained in the temporarily assembled tightened state.

Since a key hole type key hole corresponding to the slide guide elongated hole is formed in the other joining mast, a large head portion of the horizontal through bolt or a large hole of the horizontal through bolt is formed in the upper circular hole. The other joining mast can be joined 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 when both joining masts are fastened. Sliding guide along the long hole and the slide guide, so there is no risk of separation.

A hook piece is bent horizontally from either one of the two joint masts, and a circular hole for receiving a hanging bolt hanging 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, the duct installation height can be adjusted by freely moving up and down with respect to the hanging bolts. Remarkably excellent in

[0013]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described in detail below with reference to the drawings. In FIGS. 1 to 10 showing a basic embodiment of the hanging metal fittings and a hanging construction state of a circular duct by the hanging metal fitting, (D) is a constant length. A circular duct made of a metal spiral tube or glass wool, (10) is a hanging bolt for the duct (D), which is preliminarily and integrally suspended from the ceiling surface (C) of the building.

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

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

In this regard, in the figure, by bending one of the suspending masts (12) that stands upright from a metal plate having the same constant width as the clamp band (11) into a U-shape when viewed from the front, The lower end of the mast body (12a) is used as an attachment piece (12c) to the clamp band (11) and is joined to the inner surface of one end of the clamp band (11), and by spot welding or riveting (15). It is fixed and integrated.

Then, the other joining mast (13) which stands vertically 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 is joined. As (13a), the hanging joint mast (12) is erected in a back-to-back state with the mast main body (12a), and the remaining other side is used as a mounting piece (13b) to the clamp band (11). The band (11) is separated and joined to the inner surface of the other end, and fixedly integrated by spot welding, a rivet (16) or the like.

In this way, if the attachment pieces (12c) (13b) of the two joining masts (12) (13) are separated and joined to both ends of the clamp band (11) from the inside, they are integrated. The step (17) serves as a resistance against the positional deviation of the duct (D) with respect to the clamp band (11) and a resistance against idling, and there is an advantage that this can be prevented.

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

However, the pair of joining masts (12) and (13) separate from the clamp band (11) are fixedly integrated with the clamp band (11) by the spot welding or the rivets (15) and (16). Instead of this, the pair of joining masts (12) (13) may be separated from the clamp band (11) and continuously bent and raised from both ends to stand up.

The pair of contact masts (12) and (13) which stand upright from the separated both ends of the clamp band (11) are connected to each other when the main mast body (12a) and the joint piece (13a) are joined together. It will be fastened with one horizontal through bolt (18) and nut (19), but the key hole (20) for receiving the horizontal through bolt (18) has the above-mentioned short joining mast (13). An opening is formed in the joining piece (13a).

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) of the horizontal through bolt (18) allows the large head portion (18a) or the nut (19) screwed to the bolt (18) to be received. At the same time, the shaft portion (18b) of the bolt (18) can be received by a small diameter elongated hole (20b) extending in a slender manner along the remaining vertical direction.

On the other hand, the mast body (12a) of the tall joining mast (12) joined to the joining piece (13a) has a small-sized 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 side of the tall joining mast (12), and Under the provisionally assembled state in which the nut (19) is screwed into the shaft portion (18b), the large round hole (20a) on the side of the short joining mast (13) is inserted into the nut (19). The pair of joining masts (12) and (13) can be kept in a joined state, and then the shaft portion (18b) of the horizontal through bolt (18) has a length on the side of the short joining mast (13). There is also a risk that the bolt (18) may come off along the hole (20b) and the slide guide elongated hole (21) on the side of the tall joint mast (12) by itself, as shown in FIGS. Absent.

In other words, it is not necessary to disassemble the horizontal through bolt (18) and the nut (19) one by one, and even if they are screwed into the temporary tightened state, the both joint masts (12) ( As a result, both joint masts (12) and (13) can be set in a penetrating state in order to fasten and fix 13). In that case, a vibration absorbing packing (not shown) of the duct (D) may be interposed in a pre-attached state on the joint surfaces of the joint masts (12) and (13).

In FIG. 7, the nut (19) screwed into the horizontal through bolt (18) is received in the large round hole (20a) of the short joint mast (13). By inserting the bolt (18) into the slide guide slot (21) of the tall joint mast (12) in the reverse direction, the head (18a) of the bolt (18) is inserted into the short joint mast (13). It is also possible to let it be received in the large-diameter round hole (20a).

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, use the vertical height (H1) of the tall joint mast (12) as the height adjustment allowance (H), and make it as large as possible (actually). This is because it can be utilized under the condition of about 100 mm above.

Further, in the figure, the tall joint mast (12) that is fastened to the suspension bolt (10) by the hook piece (12b) is fixed side, and the main mast (of the fixed side joint mast (12) ( By forming the slide guide elongated hole (21) in 12a), the horizontal through bolt (18) is temporarily assembled with the nut (19), and the guide elongated hole (21) is more stable. A keyhole-type keyhole (20) is formed on the movable short mast (13) that is fixed to the fixed joint mast (12) and then joined to the fixed mast (12) in a closed state. There is.

However, as long as the large-diameter round hole (20a) of the key hole (20) communicates with and opens directly above the small-diameter 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 structure, when the duct (D) is suspended from the ceiling surface (C) of the building, as is apparent from FIGS. 8 and 9, the clamp band (D) is attached to the duct (D). 11) A hanging bolt for hanging a hook piece (12b) of a tall joint mast (12) which stands up integrally from the clamp band (11) after being wrapped around and held from the ceiling surface (C). It is inserted into (10) and a pair of upper and lower nuts (22) and (23) are fastened to the suspension bolt (10) to suspend and fix the suspension bolt (10) in a non-removable manner.

In that 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 () screwed to the hanging bolt (10). Since 22) and (23) are independent of the joining mast (12) that also includes the hook piece (12b), the installation height of the duct (D) can be adjusted by rotating this. it can.

Then, the horizontal penetrating bolt (18) was continuously inserted into the slide guide elongated hole (21) on the side of the tall joining mast (12), and the nut (19) was screwed into this as a temporary tightened state. Later, the other short mast (13) is joined so that the bolt (18) is received in the keyhole (20).

By doing so, the horizontal through bolt (18) slides down by itself and is kept incapable of being detached from the joint masts (12) and (13). Tighten the nut (19). The bolt (18) and nut (19) have been 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. Since the diameter of the clamp band (11) is slightly smaller than the diameter of the duct (D), the bolt (18) and nut (19) that receive the expanding biasing force are not likely to loosen. is there.

Further, when it becomes necessary to adjust the installation height of the duct (D) after the above-mentioned suspension construction, a pair of upper and lower nuts (22) (23) fastened to the suspension bolt (10). ) Is loosened and the clamp band (11) of the duct (D) is moved up and down along the suspension bolt (10) as suggested by the comparison between FIG. 9 and FIG. It is not necessary to disassemble both the joint masts (12) and (13) of (11) by 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) which stands upright from the clamp band (11) is suspended. In fastening the bolt (10) in an orthogonal state, a nut (24), which replaces the pair of upper and lower nuts (22) and (23) described in the basic embodiment, is attached to the hook piece (12b). ) It is swaged freely in the round hole (14) for receiving the hanging bolt.

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 nut (24) can be suspended. There is an advantage that the fastening work with the bolt (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 both ends of the clamp band (11) by substantially the same height. As a result, a hook piece (12b), which is made upright integrally and is bent horizontally from one of the joining masts (12), is formed so as to penetrate the window (25) corresponding to the other joining mast (13). Overhangs.

According to this, since the hook piece (12b) penetrates the window (25), even if the hook (12) receives the weight of the duct (D), there is no risk of losing and deforming upwards. As a result, there is no possibility that the combined masts (12) and (13) will swing, so that the slide guide elongated hole (21) and the key hole (20) can be properly matched with each other.

Further, FIG. 13 shows a third modified embodiment of the present invention, in which the clamp band (11) is bent into a regular decagon or other regular polygons to form the regular polygon. The duct (linear duct) (D) can be held. The present invention can be embodied as a hanging metal fitting.

Since the other configurations in 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. Only the corresponding symbols with 10 are entered, and the detailed description thereof is omitted.

[0041]

[Effect of device]

 As described above, in the hanging metal fitting of the present invention, due to its structure, the pair of joining masts (12) and (13) are integrated outward from the separated both ends of the clamp band (11) that holds the duct (D). The slide which can stand upright and can receive the shaft portion (18b) of the horizontal through bolt (18) for fastening both joining masts (12) and (13) in one of the joining masts (12). The elongated guide hole (21) is formed so as to extend in the vertical direction, and the remaining joining mast (13) is provided with a key hole (20) corresponding to the slide guide elongated hole (21). , Its upper part is a large diameter head (18a) of the horizontal penetrating bolt (18) or a round hole (20a) capable of receiving a nut (19) screwed thereto, and the lower part is the horizontal penetrating part. Can accept shank (18b) of bolt (18) As long holes (20b), openings are formed in a keyhole shape that communicates with each other, and horizontal hook pieces (12b) bent from one or the other of the joining masts (12) are attached to the ceiling surface (C) of the building. Since the round hole (14) for receiving the hanging bolt (10) hanging from the opening is formed, the problems of the prior art described at the beginning can be completely improved.

That is, in the case of the present invention, one of the joint masts (12) and (13) that stand upright from the separated both ends of the clamp band (11) is connected to either of the joint masts (12) ( Since the slide guide elongated hole (21) for receiving the shaft portion (18b) of the horizontal through bolt (18) for fastening 13) is formed, the nut (18) is inserted into the nut ( By screwing 19) together, both of them can be preliminarily maintained in the temporarily assembled tightened state.

Then, after that, the other joining mast (13) may be joined to the above-mentioned one joining mast (12). Then, the round hole (20a) of the key hole (20) formed corresponding to the other joining mast (13) has a large head portion (18a) or nut (19) of the horizontal through bolt (18). ), The shaft portion (18b) of the bolt (18) continues to drop downwards along the slot (20b) of the key hole (20) and the slide guide slot (21). Since both joint masts (12) and (13) can be completely fastened and fixed by themselves, the workability at the site is remarkably excellent.

In this case, particularly when the structure of claim 2 is adopted, the horizontal through bolt () is attached to the fixed-side joining mast (12) provided with the hook piece (12b) to be fastened to the hanging bolt (10). Since the slide guide elongated hole (21) for receiving the shaft portion (18b) of 18) is formed, the bolt (18) inserted into the elongated hole (21) is tightened in the preliminary provisional assembly. The nut (19) can be kept more and more stable.

Further, if the structure of claim 4 is adopted, since the clamp band (11) and both joint masts (12) (13) are independent, the diameter and band of the clamp band (11) are Only by changing the width, it is possible to deal with the change in the thickness of the duct (D), and there is an effect that the double-sided masts (12) and (13) can be used for general purposes.

Further, since the attachment pieces (12c) and (13b) of the two joint masts (12) and (13) are separated and fixed to both ends of the clamp band (11) from the inside thereof, the attachment pieces ( The step (17) generated between the inner surfaces of the clamp bands (11c) and (12c) and (13b) also has an effect of preventing displacement of the duct (D) with respect to the clamp band (11) and idling.

According to the present invention, as is apparent from the structure of claim 1, the horizontal hook piece (12b) bent from either one of the both joint masts (12) (13) is the ceiling surface of the building. The hook bolt (10) hanging from (C) is orthogonal to the hook bolt (10), and the hook piece (12b) has a round hole (14) for receiving the hanging bolt (10). In the fastening and fixing state of both joint masts (12) and (13) by the bolt (18) and nut (19), 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 duct (D) is The height adjustment allowance (H) can be secured more and more.

Further, if the construction of claim 5 is adopted, when the hook piece (12b) of the joining mast (12) and the suspension bolt (10) are fastened, separate nuts (22) (23) are used. ) Is not required to be gripped, and only the nut (24) crimped to the hook piece (12b) is required to be rotated. Therefore, the height adjustment work of the duct (D) can be performed comfortably and efficiently. There is an effect that can be done.

[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) ・ Round hole for receiving hanging bolt (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 is hung from the ceiling surface (C) of the building on a horizontal hook piece (12b) bent from one or the other joining mast (12). 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 fixedly 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.