JP6635870B2 - Air conditioning duct device - Google Patents

Description

  The present invention relates to an air conditioning duct device for a building.

Generally, an air conditioning duct device is configured by connecting a plurality of duct members in a line. Each duct member is provided with a flange. The flanges of two adjacent duct members are joined by screws, welding, or the like.
In Patent Literature 1, a flange is eliminated from a rectangular duct member, and instead, a joint plate separate from the rectangular duct member is used to connect adjacent rectangular duct members to each other. The joint plate has a substantially Ω-shaped cross section and extends straight along the circumferential direction of the rectangular duct member. The joint plate is disposed so as to straddle between outer surfaces of adjacent rectangular duct members, and is connected to each of the rectangular duct members by screwing or welding.

Japanese Patent No. 2961369

The structure in which the flanges of a pair of duct members are connected to each other by screws or welding requires not only space for placing the flanges around the duct members, but also screwing and welding work at the air-conditioning duct equipment construction site. is there.
Also in Patent Document 1, it is necessary to perform screwing and welding work for joining a joint plate to a rectangular duct member at a construction site.
In view of such circumstances, the present invention provides a connecting means that can easily connect the rectangular duct members of the air conditioning duct device, can reduce the work at the construction site, and does not need to secure a wide arrangement space around the duct member. The purpose is to provide.

To solve the above problems, the air conditioning duct device according to the present invention,
A plurality of rectangular duct members connected to each other,
Connecting means for connecting two adjacent rectangular duct members to each other,
The connecting means,
A pair of connection receiving members provided so as to extend along opposite sides of the two rectangular duct members facing each other in parallel with each other,
A connection member interposed between the pair of connection receiving members,
The connection member has a pair of fitting portions and extends in parallel with the connection receiving member,
Each of the pair of fitting portions is fitted to a corresponding connection receiving member so as to be slidable in the extending direction.

  According to this connection means, the pair of square duct members can be easily connected to each other by slidingly fitting the pair of fitting portions of the connection member to the connection receiving member of the corresponding square duct member. The connection receiving member can be attached to the rectangular duct member in advance, and the work at the construction site of the air conditioning duct device can be reduced. Further, the connecting means does not need to protrude much from the outer periphery of the rectangular duct member, and it is not necessary to secure a wide space for disposing the connecting means around the rectangular duct member.

It is preferable that the connecting member has a connecting web connecting the pair of fitting portions and has a substantially H-shaped cross section.
The coupling receiving member has a fitting groove extending in the extending direction, a pair of locking protrusions that cover the side of the fitting groove facing the rectangular duct member to be connected and face each other, and a pair of locking protrusions. Having a communication slit formed between the parts,
It is preferable that the fitting portion is accommodated in the fitting groove, and the connection web is passed through the communication slit.
Since the fitting portion accommodated in the fitting groove is locked by the locking projection, the fitting portion is prevented from coming off the fitting groove. Thus, the pair of rectangular duct members can be reliably connected to each other.

  ADVANTAGE OF THE INVENTION According to this invention, square duct members of an air-conditioning duct apparatus can be easily connected, and the work on a construction site can be reduced. Moreover, it is not necessary to secure a large space for the connecting means around the rectangular duct member.

FIG. 1A is a perspective view showing one embodiment of the present invention, in a state where two adjacent rectangular duct members of an air conditioning duct device of a building are connected by connecting means. FIG. 1B is a perspective view showing a state in which an aluminum adhesive tape is further wound around the outer periphery of the connecting means. FIG. 2 is a plan view of a connection portion between two rectangular duct members of the air conditioning duct device. FIG. 3 is an exploded perspective view of the two rectangular duct members and the connecting means. FIG. 4A is a plan view showing the two rectangular duct members facing each other before connection. FIG. 4B is a plan view showing the two rectangular duct members in a state where the two rectangular duct members abut against each other via a connection receiving member. FIG. 5 is a front view of the opposite end of the rectangular duct member, taken along line VV in FIG. FIG. 6A is a cross-sectional view of the rectangular duct member taken along a line VIa-VIa in FIG. FIG. 6B is a cross-sectional view along VIb-VIab in FIG. 4B. FIG. 7 is a perspective view showing a state in which the connecting member of the connecting means is slid into the connection receiving member. FIG. 8A is a cross-sectional view of the connection portion taken along the line VIIIa-VIIIa in FIG. FIG. 8B is a cross-sectional view of the connecting portion taken along the line VIIIb-VIIIb in FIG. FIG. 9 is a cross-sectional view of the connection portion taken along line IX-IX in FIG.

Hereinafter, an embodiment of the present invention will be described with reference to the drawings.
FIG. 1 shows an air conditioning duct device 1 for a building. As shown in FIG. 1A, the air conditioning duct device 1 includes a plurality of (only two are shown in the figure) rectangular duct members 10 and a connection receiving member 20. A plurality of rectangular duct members 10 are arranged in a line.

  As shown in FIGS. 1A and 6, the rectangular duct member 10 includes a duct main body 11. The duct body 11 is made of glass wool or foam resin. The duct main body 11 has a square tubular shape. As shown in FIG. 6, the outer surface of the duct main body 11 is covered with an outer metal layer 15. The inner surface of the duct body 11 is covered with the inner metal layer 16. The metal layers 15 and 16 are made of aluminum foil. The non-combustibility of the rectangular duct member 10 is ensured by the metal layers 15 and 16.

  As shown in FIGS. 1A and 2, a connecting means 2 is provided between two adjacent rectangular duct members 10. These rectangular duct members 10, 10 are connected by the connecting means 2. As shown in FIG. 1B, an aluminum adhesive tape 3 is further wound around the connecting means 2. The aluminum adhesive tape 3 covers the entire circumference of the connecting means 2 and straddles between the rectangular duct members 10, 10.

  As shown in FIG. 3, the connection means 2 includes eight connection receiving members 20, four connection members 30, and four corner cover members 40. As shown in FIGS. 4 and 5, four connection receiving members 20 are provided at the opposite end 12 of each rectangular duct member 10. These connection receiving members 20 are attached to the four sides 12 e of the opposing end 12, respectively.

  The connection receiving member 20 is formed by extruding a resin such as polyethylene (PE) or polypropylene (PP), and linearly extends along the corresponding side 12e. The connection receiving member 20 has a frame 29, a connection receiving portion 21, and a claw locking portion 24. The frame 29 has a frame main portion 29a, an outer frame plate 29b, and an inner frame plate 29c, and has a substantially U-shaped cross section and extends linearly. As shown in FIG. 6A, a frame main portion 29 a is attached to and attached to an end surface of the rectangular duct member 10. The outer frame plate 29b is attached to and adhered to the outer surface of the rectangular duct member 10. The inner frame plate 29c is attached and adhered to the inner side surface of the rectangular duct member 10. An epoxy adhesive or the like can be used as the adhesive.

  As shown in FIG. 6A, the connection receiving portion 21 and the claw locking portion 24 are integrally formed on the frame main portion 29a. That is, two large and small grooves 21a and 24a are formed side by side in the frame main portion 29a. The rectangular tube-shaped portion having a rectangular cross section that defines the larger fitting groove 21a forms the connection receiving portion 21. A square tubular section having a square cross section that defines the smaller claw locking groove 24a forms the claw locking portion 24.

  A pair of locking projections 21b, 21b are provided on the side (left side in FIG. 6A) of the coupling receiving portion 21 facing the coupling partner square duct member 10. Each locking projection 21b covers the mating side of the fitting groove 21a (the left side in FIG. 6A). A communication slit 21c is formed between the pair of locking projections 21b, 21b. The fitting groove 21a is opened via the communication slit 21c. As shown in FIGS. 3 and 6, the connection receiving portion 21 and its components 21a, 21b, 21c extend over the entire length of the connection receiving member 20 in the direction in which the connection receiving member 20 extends (in FIG. 6, the direction perpendicular to the paper surface). Both ends of the fitting groove 21a and the communication slit 21c are opened to reach both end surfaces in the extending direction of the connection receiving member 20.

  As shown in FIG. 6A, the claw locking portion 24 is disposed closer to the outer surface of the rectangular duct member 10 than the connection receiving portion 21 (upper side in FIG. 6A). A claw locking slit 24c is formed at a corner of the claw locking portion 24 on the connection partner side (the left side in the drawing) and near the outer surface (the upper side in the drawing). The fitting groove 21a is opened via the claw locking slit 24c. As shown in FIGS. 3 and 6, the claw locking portion 24 and its components 24a and 24c extend over the entire length of the connection receiving member 20 in the extending direction (the direction perpendicular to the plane of FIG. 6). Both ends of the claw locking groove 24a and the claw locking slit 24c are opened to reach both end surfaces in the extending direction of the connection receiving member 20.

  As shown in FIGS. 4 (a) and 4 (b), the connection receiving members 20, 20 of the sides 12e, 12e facing each other in parallel at the opposite ends 12, 12 of two adjacent rectangular duct members 10, 10. The two are facing each other. As shown in FIG. 6B, the communication slits 21c of the connection receiving members 20, 20 are connected to each other. Further, the fitting grooves 21a are connected to each other via the communication slits 21c. Further, the claw locking slits 24c, 24c are continuous with each other, and further, the claw locking grooves 24a, 24a are continuous with each other via the claw locking slits 24c, 24c.

As shown in FIGS. 2 and 8, a connecting member 30 is interposed between the two opposing connection receiving members 20. The connecting member 30 is formed by extruding a resin such as polyethylene (PE) or polypropylene (PP).
As shown in FIG. 3 and FIG. 8A, the connecting member 30 has a pair of fitting portions 31, 31 and a connecting web 32, and has a substantially H-shaped cross section. The connecting member 30 and its components 31, 32 extend linearly in parallel with the corresponding connecting receiving member 20. The pair of fitting portions 31 face each other in parallel. A connecting web 32 is provided between the fitting portions 31, 31. The fitting portions 31, 31 are integrally connected to each other via the connection web 32. A pair of locking recesses 30a are formed by the fitting portions 31, 31 and the connection web 32.

  As shown in FIG. 8A, the opposed connection receiving members 20, 20 are joined by a connection member 30. One fitting portion 31 of the connecting member 30 is housed in the fitting groove 21 a of the one connection receiving member 20, and the other fitting portion 31 is housed in the fitting groove 21 a of the other connection receiving member 20. . Further, the connection web 32 is accommodated in the communication slits 21c, 21c. Further, the locking projection 21b is accommodated in the locking recess 30a. Each fitting portion 31 is locked to the locking projection 21b. This prevents the two connection receiving members 20, 20 and thus the rectangular duct members 10, 10 from moving relative to each other in the direction away from each other.

  As shown in FIGS. 1A and 3, corner cover members 40 are provided at four corners between adjacent rectangular duct members 10, 10. The corner cover member 40 is formed by injection molding a resin such as polyethylene (PE) or polypropylene (PP). As shown in FIG. 9, the corner cover member 40 has a pair of cover portions 41, 41 and a pair of locking claws 44. Each cover part 41 is formed in a plate shape. A pair of cover parts 41, 41 are connected at right angles. The corner cover member 40 has an L-shape when viewed from the longitudinal direction of the rectangular duct member 10. As shown in FIG. 2, the length of the corner cover member 40 along the longitudinal direction (the left-right direction in FIG. 2) of the rectangular duct member 10 is a size obtained by matching the dimensions of the two connection receiving members 20 in the same direction. Has become.

  As shown in FIG. 3, a locking claw 44 is provided on an inner side surface of a central portion in the longitudinal direction of each cover portion 41. The locking claws 44 protrude from the corresponding longitudinal side edges of the cover 41.

  As shown in FIGS. 1 and 9, the corner cover member 40 closes the gap 1 b (FIG. 7) at the corner between the adjacent rectangular duct members 10. As shown in FIG. 9, each locking claw 44 is fitted in the corresponding claw locking groove 24 a of the connection receiving member 20. As shown in FIG. 8B, the locking claws 44 are fitted in the claw locking grooves 24a on both sides across the claw locking slits 24c.

<Method of connecting square duct member 10>
Two adjacent rectangular duct members 10 in the air conditioning duct device 1 are connected as follows.
As shown in FIG. 5, the connection receiving members 20 are attached to the four sides 12 e of the opposed end portions 12 of the respective rectangular duct members 10.
Next, as shown in FIG. 4 (a), the two rectangular duct members 10, 10 are opposed to each other, and as shown in FIGS. 4 (b) and 6 (b), the opposed end portions 12, 10, respectively. The twelve connection receiving members 20 are abutted against each other.
Subsequently, as shown in FIGS. 4B and 7, the connecting members 30 are arranged along the extension lines of the corresponding connecting receiving members 20, 20, and are moved linearly straight toward the connecting receiving members 20. Let it. Thereby, the connection member 30 is slidably fitted to the connection receiving portions 21 and 21 from the end faces of the connection receiving members 20 and 20. That is, as shown in FIG. 8, the pair of fitting portions 31 are inserted into the corresponding fitting grooves 21a, and the connecting web 32 is inserted into the communication slit 21c. At this time, it is sufficient that there is a linear space around the rectangular duct member 10 where the connecting member 30 can be arranged on an extension of the connecting receiving member 20.
The four connection members 30 are slid into the corresponding connection receiving members 20, 20, respectively. As a result, the rectangular duct members 10, 10 are connected to each other inseparably.
Next, the corner cover member 40 is put on each of the four corners between the rectangular duct members 10, 10, and the respective locking claws 44 are inserted into the corresponding claw locking portions 24, 24 of the corresponding connection receiving members 20, 20. Insert and lock. Thereby, the gap 1b at the corner can be covered.
Next, as shown in FIG. 1B, an aluminum adhesive tape 3 is attached around the connecting means 2 so as to straddle between the rectangular duct members 10, 10.

In this way, the rectangular duct members 10, 10 of the air conditioning duct device 1 can be easily connected to each other.
As described above, the work at the construction site of the air conditioning duct device 1 can be reduced by attaching the connection receiving member 20 to the rectangular duct member 10 in advance. Screwing and welding work at the construction site of the air-conditioning duct device 1 are unnecessary, and there is no need to carry and install a screw-fastening tool and a welding device at the construction site of the air-conditioning duct device 1.
Only the outer frame plate 29b and the cover portion 41 of the connecting means 2 protrude from the outer periphery of the rectangular duct member 10, and the outer frame plate 29b and the cover portion 41 can be formed in a thin plate shape. Therefore, it is not necessary to secure a large space for the connecting means 2.

The present invention is not limited to the above embodiment, and various modifications can be made without departing from the spirit of the present invention.
For example, the cross section of the connection receiving member 20 is not limited to a quadrangle, and may be another polygonal cross section such as a hexagon.
The material of each element 20, 30, 40 of the connecting means 2 is not limited to resin, but may be metal or the like.
The joining means between the connection receiving member 20 and the rectangular duct member 10 is not limited to an adhesive, but may be a screw or welding.
The connection receiving portion 21 may be provided on the outer frame plate 29b.
The joining operation between the connection receiving member 20 and the rectangular duct member 10 may be performed at a piping construction site of the air conditioning duct device 1.
The present invention is applicable not only to the case where the rectangular duct members 10 are connected in a line but also to the branch portion from the main duct to the branch duct.

  INDUSTRIAL APPLICATION This invention is applicable to the air conditioning equipment of a building, for example.

DESCRIPTION OF SYMBOLS 1 Air-conditioning duct device 1b Gap at corner 2 Connecting means 3 Aluminum adhesive tape 10 Square duct member 11 Duct body 12 Opposite end face ⇒ Opposite end 12e End edge ⇒ Side 15 Outer metal layer 16 Inner metal layer 20 Connection receiving member 29 Frame 29a Frame main portion 29b Outer frame plate 29c Inner frame plate 21 Connection receiving portion 21a Fitting groove 21b Locking protruding portion 21c Communication slit 24 Claw locking portion 24a Claw locking groove 24c Claw locking slit 30 Connecting member 31 Fitting Part 32 connecting web 30a locking concave part 40 corner cover member 41 cover part 44 locking claw

Claims (3)

A plurality of rectangular duct members connected to each other,
Connecting means for connecting two adjacent rectangular duct members to each other,
The connecting means,
A pair of connection receiving members provided so as to extend along opposite sides of the two rectangular duct members facing each other in parallel with each other,
A connection member interposed between the pair of connection receiving members,
The connection member has a pair of fitting portions and extends in parallel with the connection receiving member,
The air-conditioning duct device, wherein each of the pair of fitting portions is fitted to a corresponding connection receiving member so as to be slidable in the extending direction.   The air-conditioning duct device according to claim 1, wherein the connection member has a connection web that connects the pair of fitting portions, and has a substantially H-shaped cross section. The coupling receiving member has a fitting groove extending in the extending direction, a pair of locking protrusions that cover the side of the fitting groove facing the rectangular duct member to be connected and face each other, and a pair of locking protrusions. Having a communication slit formed between the parts,
The air conditioning duct device according to claim 2, wherein the fitting portion is housed in the fitting groove, and the connection web is passed through the communication slit.

Images