JP2004053224A - Duct end - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a duct end reducing the cost for a mold by applying a comparatively simple configuration, and improving the work efficiency by simplifying the mounting work. <P>SOLUTION: This duct end is composed of a cylindrical female piece 1 and a cylindrical male piece 2 respectively having flanges 7, 12 projecting outward, and connected to each other through a ceiling plate, a wall plate and the like. The female piece 1 has a duct mounting part 5 on its upper half part, and a male piece insertion part 6 on its lower half part, a connection tape 8 is suspended down from the flange 7 formed on the male piece inserting part 6, and further the flange 12 of the male piece 2 has a tape insertion hole 14 for inserting the connection tape 8. A tape fixing means 15 corresponding to the connection tape 8 for fixing the same, is fixed to an inner wall face of the male piece 2. <P>COPYRIGHT: (C)2004,JPO

Description

[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to a duct mouth, and more particularly, to a duct mouth for fixing a tip of a duct arranged behind a ceiling of each room to an opening such as a ceiling in a mechanical room ventilation system. is there.
[0002]
[Prior art]
As a duct opening for fixing the end of the duct to an opening such as a ceiling, a female piece which is disposed behind the ceiling and to which an end of the duct is connected, and which is fitted to the female piece from the indoor side. There is known a type comprising a male piece to be combined and fixed to the ceiling plate by sandwiching the ceiling plate between both pieces (for example, Japanese Patent No. 3108379).
[0003]
In the case of the above-mentioned conventional duct mouth, the male type piece is fixed to the female type piece by screwing. There is a disadvantage that it becomes expensive. In the case of the screwing method, the screwing operation requires time and labor.
[0004]
[Problems to be solved by the invention]
As described above, in the case of the above-mentioned conventional duct mouth, there is a problem that the molding die is expensive and the installation work is troublesome. Therefore, the present invention has no such problem, namely, Another object of the present invention is to provide a duct opening which can reduce the cost of a mold due to its simple form, and which facilitates the mounting work and improves the work efficiency.
[0005]
[Means for Solving the Problems]
A duct mouth according to the present invention for solving the above problems has a cylindrical shape having a flange projecting outward, and a female piece and a male piece which are connected with a ceiling plate, a wall plate and the like therebetween. The female piece has a duct mounting portion in the upper half and a male piece insertion portion in the lower half, and is formed in the male piece insertion portion. The connection tape is hung from the flange, a tape insertion hole for inserting the connection tape is formed in the flange of the male piece, and an inner wall surface of the male piece corresponds to the connection tape. And a tape fixing means for fixing this is fixed.
[0006]
As the connection tape and the tape fixing means, a hook-and-loop fastener is preferable. The tape insertion hole can be formed by cutting from the outer peripheral surface of a flange of the male piece. Preferably, a plurality of the connecting tapes and the plurality of tape insertion holes are provided, respectively, and a flange of the male piece is cut into two sides.
[0007]
BEST MODE FOR CARRYING OUT THE INVENTION
Embodiments of the present invention will be described with reference to the accompanying drawings. The mouth of the duct according to the present invention is generally composed of a female piece 1 and a male piece 2 made of plastic. The female piece 1 is connected to the end of the duct 3 and has a space above the ceiling. The male piece 2 is connected to the female piece 1 from the indoor side. The female piece 1 and the male piece 2 have flanges 7 and 12, respectively, and hold the ceiling plate 4, the wall plate and the like between the two flanges 7 and 12.
[0008]
The female piece 1 has a duct mounting portion 5 at the upper half and a male piece inserting portion 6 at the lower half. An outwardly extending flange 7 is provided. The duct mounting portion 5 has various diameters so as to correspond to the duct 3 to be mounted (see FIGS. 2A and 2B).
[0009]
A pair of connecting tapes 8 are usually suspended from the flange 7 at symmetrical positions. The connecting tape 8 may be of a type such as an adhesive tape or a buckle, but is preferably an inexpensive hook-and-loop fastener (Magic Tape (registered trademark)) which is easy to handle.
[0010]
The connecting tape 8 may be detachably attached to the outer peripheral surface of the male piece insertion portion 6 or the flange 7 so as to be replaceable. For this purpose, for example, a stopper that protrudes in the lateral direction is provided at an end of the connecting tape 8, and the connecting tape 8 is inserted into a tape insertion hole 7 a formed in the flange 7. Needless to say, in this case, since the stopper is hooked on the edge of the tape insertion hole 7a, the connecting tape 8 does not come off.
[0011]
The male piece 2 has a cylindrical shape, and usually has a flange 12 at the lower end. The flange 12 has a shape in which two circular surfaces each having a diameter larger than the diameter of the mouth mounting hole 9 formed in the ceiling plate 4 are generally cut in parallel, and the width w between the cut surfaces 13 is equal to the width of the mouth mounting hole 9. (See FIG. 3A).
[0012]
A tape insertion hole 14 for inserting the connecting tape 8 is formed in the flange 12 at a position corresponding to the connecting tape 8. The tape insertion hole 14 can also be formed by cutting from the outer peripheral surface of the flange 13 (see FIGS. 3A and 3B). In such a case, the operation of housing the connecting tape 8 in the tape insertion hole 14 becomes easy.
[0013]
A tape fixing means 15 corresponding to the connecting tape 8 for fixing an end of the connecting tape 8 pulled out through the tape insertion hole 14 is fixed to the inner surface of the male piece 2. When a surface tape is used as the connecting tape 8, the tape fixing means 15 is a surface tape that engages with the tape.
[0014]
The female piece 1 and the male piece 2 are fitted with the male piece 2 in the female piece 1 so that the flanges 7 and the flanges 12 are fitted together (the ceiling plate 4 is interposed between the flanges 7 and 12 during construction). ), The connecting tape 8 hanging from the female piece 1 is pulled out through the tape insertion hole 14, and its end is pulled up into the male piece 2 and fixed to the tape fixing means 15. Thus, the male piece 2 is connected to the female piece 1.
[0015]
When using the mouth for the duct, the duct 3 is attached to the duct mounting portion 5 of the female piece 1 with the male piece 2 connected to the female piece 1 as described above, Place on the back.
[0016]
At the time of construction, the worker inserts his hand through the mouth mounting hole 9 on the indoor side, pulls both the pieces 1 and 2 and removes the male piece 2 from the female piece 1 by the reverse operation. remove. Then, the male piece 2 is tilted so that the cut surface 13 is oriented vertically, and the male piece 2 is pulled out from the mouth mounting hole 9. This work is possible because the width w between the cut surfaces 13 is set smaller than the diameter of the mouth mounting hole 9.
[0017]
Next, the female piece 1 is drawn toward the mouth mounting hole 9 to bring the flange 12 into contact with the ceiling plate 4, the connecting tape 8 is pulled out from the mouth mounting hole 9, and the tape insertion hole of the male piece 2 is inserted. 14 (FIG. 4A). Then, while holding the connecting tape 8, the male piece 2 is shifted up until the flange 12 hits the ceiling plate 4, and in this state, the end of the connecting tape 8 is taped as described above. It is tightly fixed to the fixing means 15 (FIG. 4B).
[0018]
Thus, the ceiling plate 4 is sandwiched between the flanges 7 and 12 of the two pieces 1 and 2, whereby the opening for the duct is fixed to the ceiling plate 4 (FIG. 5A). Then, the grill cap 20 is put on from the indoor side (FIG. 5B).
[0019]
Since the mouth for the duct according to the present invention is attached as described above, troublesome work such as bonding and screwing is unnecessary, so that the working efficiency is extremely high. In addition, since the two pieces 1 and 2 are connected via the connecting tape 8, there is no restriction on the interval between the flanges 7 and 12 (however, the end of the connecting tape 8 is fixed to the tape fixing means 15). Reach), any interval can be set. Therefore, it can be used regardless of the thickness and type of the ceiling plate 4.
[0020]
【The invention's effect】
As described above, the present invention has a relatively simple form without a threaded portion, so that the mold cost can be kept low. In addition, when the mouth is attached, a female piece and a male piece are used. The male piece is taken out of the mounting hole because there is no danger of losing the male piece because it is integrated and attached to the duct behind the ceiling. After that, it is possible to easily and quickly connect to the female piece and fix it to the ceiling board etc. irrespective of the thickness and material of the ceiling board etc. without the need for work such as bonding and screwing. There is an effect that removal is easy.
[Brief description of the drawings]
FIG. 1 is an exploded perspective view of a duct mouth according to the present invention.
FIG. 2 is a view showing the configuration of a female piece at the mouth of a duct according to the present invention.
FIG. 3 is a diagram showing a configuration of a male piece at the mouth of a duct according to the present invention.
FIG. 4 is a view showing a method of attaching a duct mouth according to the present invention for each process.
FIG. 5 is a view showing a method of attaching a duct mouth according to the present invention for each process.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Female type piece 2 Male type piece 3 Duct 4 Ceiling plate 5 Duct mounting part 6 Male type piece inserting part 7 Flange 7a Tape insertion hole 8 Connecting tape 9 Mouth mounting hole 12 Flange 13 Cut surface 14 Tape insertion hole 15 Tape fixing means 20 Grill cap

Claims (6)

Both the female and male pieces are cylindrical in shape and have flanges extending outward and are connected with a ceiling plate, a wall plate, etc. therebetween, and the female piece has an upper half part. And a male piece insertion part in a lower half part, and a connecting tape is hung from the flange formed in the male piece insertion part. A tape insertion hole for inserting the connecting tape is formed in the flange, and a tape fixing means for fixing the fixing tape corresponding to the connecting tape is fixed to the inner wall surface of the male piece. The mouth for the duct. The duct mouth according to claim 1, wherein the connection tape and the tape fixing means are hook-and-loop fasteners. The duct mouth according to claim 1 or 2, wherein the connection tape provided on the female piece is detachable. 4. The duct mouth according to claim 1, wherein the tape insertion hole is formed by cutting from an outer peripheral surface of a flange of the male piece. 5. The duct mouth according to any one of claims 1 to 4, wherein a plurality of the connection tapes and the plurality of tape insertion holes are provided. The duct mouth according to any one of claims 1 to 5, wherein a flange of the male piece has a shape cut on two sides.

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