JPH1054604A - Duct mounting structure - Google Patents

Abstract

PROBLEM TO BE SOLVED: To simply and securely mount a duct, particularly a flexible duct even on a building board of a ceiling or a wall of a room constructed with a material difficult to be screwed such as a resin board or a heat insulation board. SOLUTION: A wire spring 7' of stopper means is disposed freely to vertically stand on an outer periphery of a body 5 of a mounting member 4 having a cylindrical body 5 and a flange 6, and a tip end of a flexible duct 1 is fitted to and inserted into the body 5, and further the body 5 is inserted into a mount hole 3 in a building board 2. Further, an undulating part (n) of the wire spring 7' is raised manually in one touch manner and is brought into resilient contact with the building board 2 in the state where the flange 6 is made contact with the building board 2. The mounting member 4 is mounted in the mounting hole 3 in the building board 2 and the flexible duct 1 is mounted through the mounting member 4 by holding the building board 2 between the flange 6 and the wire spring 7'.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a duct mounting structure for mounting a duct used for ventilation of a bathroom, a toilet, a lavatory or the like of a house to a ceiling board, a wall board or the like of each room.

[0002]

2. Description of the Related Art In recent years, a single fan type ventilation air-conditioning system in which a plurality of rooms such as a bathroom, a toilet, and a washroom in a house are ventilated by a single exhaust fan has been used for reasons such as reduction in house construction costs. Widespread. The installation of this one-fan ventilation / air-conditioning system is usually performed by installing one exhaust fan between each room in the house, and piping this exhaust fan and each of the multiple rooms with a PVC pipe or the like. Have been done. However, this construction method has a problem that skill and time are particularly required for piping work.

[0003] Therefore, as a single fan type ventilation air-conditioning system that simplifies the piping work, for example, as shown in FIG.
Is known in which the entirety is integrated into one unit. Exhaust fan device 1 in ventilation air conditioning unit of FIG.
Reference numeral 2 denotes a ventilation flexible duct 13 connected to air intake ports provided at three places via various ventilation amount control dampers 12 as necessary. Further, the exhaust fan device 11 includes:
A flexible exhaust duct 13 'is connected to a common air outlet provided at one location.

[0004] Construction of the ventilation air conditioning unit of FIG. 8 is performed as follows. The ventilation air-conditioning unit is carried to the building site of the house, and the distal ends of the three flexible ducts for ventilation 13 are connected to building boards 18 such as a ceiling plate and a wall plate of three rooms corresponding to the bathroom 14, the toilet 15, and the lavatory 16, for example. Connect the distal end of the flexible exhaust duct 13 'to the fire-resistant cladding tube 1'.
9 to the outer wall 17 of the house. The opening end of the flexible duct 13 for ventilation is connected to a mounting hole 20 formed through the building board 18 so as to communicate with the building board 1.
8 is connected.

[0005]

The flexible duct used in the unitized ventilation and air-conditioning equipment as described above is a bellows-like one containing a spiral steel wire, and is freely bent manually on site. Since the pipes can be cut and cut, the workability of the piping of the ventilation and air conditioning equipment can be improved and the cost of construction can be easily reduced. However, ceilings and walls of rooms such as unitized bathrooms such as apartment houses are often made of a material such as a resin board or a heat insulating board, which is difficult to screw, and such ceilings are difficult to screw. Reliably attaching a bellows-shaped flexible duct to a wall or wall requires a rather difficult task. Therefore, the workability of unitized ventilation and air conditioning equipment on site is poor,
In particular, accurate installation of the flexible duct in each room required a high level of skill of field workers.

Therefore, the object of the present invention is to
To provide a duct mounting structure that can easily and reliably mount ducts, especially flexible ducts, on building boards such as ceilings and walls of rooms made of materials that are difficult to screw, such as resin boards and heat insulating boards. It is in.

[0007]

A technical means for achieving the above object of the present invention is a duct mounting structure for fixing a distal end portion of a duct to a mounting hole formed in a building board. A main body of the mounting member, comprising: a mounting body having a cylindrical main body inserted into the mounting hole, a flange protruding from one end of the main body, and locking means provided at a plurality of positions of the main body so as to be able to undulate. Into the mounting holes on the building board,
With the distal end of the duct connected to the other end of the main body, the locking means is projected from the outer periphery of the main body, and the building board is clamped between the projected locking means and the flange,
The mounting member and the duct are mounted on a building board.

Here, the above-mentioned duct is a ventilation duct and an exhaust duct used for ventilation and air-conditioning equipment in a house, and is a bellows-shaped flexible duct which can be easily bent and cut.

Further, the locking means can be constituted by a spring mounted on the main body so as to be able to move up or down, or a claw piece which is integrally formed on the main body and can be moved up and down.

[0010]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment will be described below with reference to FIGS.

In the duct mounting structure shown in FIG. 1, the tip of the duct 1 is connected to a building board 2 such as a ceiling plate of a bathroom via a mounting member 4. The duct 1 is, for example, a cylindrical bellows-shaped flexible duct used for ventilation air conditioning equipment of a house.
A circular mounting hole 3 into which the tip of the flexible duct 1 is inserted is formed in the building board 2. The flexible duct 1 and the mounting member 4 are inserted into the mounting hole 3, and the mounting member 4 is inserted into the mounting hole 3. Fixed to one-touch.

The mounting member 4 is a metal product, a resin molded product or the like having a circular flange 6 integrally formed at one end of a cylindrical main body 5 as shown in FIGS. The outer diameter of the main body 5 is set slightly smaller than the inner diameter of the distal end of the flexible duct 1, and the distal end of the flexible duct 1 is fitted and fixed to the outer periphery of the end of the main body 5 opposite to the flange 6. The outer diameter of the flange 6 is set to be larger than the diameter of the mounting hole 3 of the building board 2.

At a plurality of locations on the other end of the main body 5 equidistant from the flange 6, locking means 7 for mounting the mounting member 4 to the building board 2 are installed. The locking means 7 is separate from or integral with the main body 5 and undulates on the outer peripheral surface of the main body 5 in a one-touch manner. The locking means 7 can be constituted by a wire spring 7 ′ separate from the main body 5 shown in FIGS. 1 to 5, or a claw piece 7 ″ integrated with the main body 5 shown in FIGS. 6 and 7. However, the present invention is not limited to these.

The case where the wire spring 7 'shown in FIGS. 1 to 5 is used will be described first. The wire spring 7' is formed of a single substantially arc-shaped elastic steel wire elastically fitted to the inner periphery of the main body 5 of the mounting member 4. Both ends m bent at both ends with an elastically reinforced plastic wire or the like, and arch-shaped undulations n at a plurality of portions in the middle, for example, three portions at substantially equal intervals as shown in FIG. Through holes 8 into which the undulating portions n of the wire spring 7 'are inserted are formed at three places on the main body 5 of the mounting member 4 corresponding to the wire springs 7'. The wire spring 7 ′ is
In a state where the undulations n are protruded out of the main body 5 from the respective through holes 8 so as to be able to undulate, they are fitted inside the main body 5 by elastic pressure fitting.

FIG. 3A shows a state in which the undulating portion n of the wire spring 7 ′ projects in the orthogonal direction from the outer periphery of the main body 5, and both ends m at this time are attached to the inner peripheral surface of the main body 5. At the position parallel to the axial direction of the main body 5, for example, as shown in FIG. The two ends m are manually removed from the projections 9 and approximately 90
When raised by only ゜, each undulating portion n falls by approximately 90 ° in a direction in which it comes into elastic contact with the outer peripheral surface of the main body 5 as shown in FIG.

That is, as shown in FIGS. 3A and 3B,
The undulating portion n and both ends m of the wire spring 7 ′ are always formed in a direction orthogonal to each other. When the both ends m are manually undulated by about 90 ° about the inner surface of the main body 5, the wire spring 7 ′ is twisted. Due to the elastic reaction force, each undulating portion n is supported on both ends of the through hole 8 of the
About 90 ° in the axial direction. As shown in FIG. 3A, the undulation n when raised from the main body 5 by approximately 90 ° is
And the distance between the two is set to be substantially the same as the thickness of the building board 2. At this time, the posture of the undulating portion n is stabilized by locking the both ends m to the projections 9 of the main body 5. I do.

The attachment of the flexible duct 1 to the building board 2 by the attachment member 4 having the wire spring 7 'is performed, for example, as shown in FIGS. 4 (A) and 4 (B). First, as shown in FIG. 4A, the distal end of the flexible duct 1 is passed through the mounting hole 3 of the building board 2, and the main body 5 of the mounting member 4 is inserted and fixed to the distal end. One hand is inserted into the main body 5 to raise both ends m of the wire spring 7 ′ in the radial direction of the main body 5 so that the undulating portion n is along the outer peripheral surface of the main body 5. Also, the flexible duct 1 is inserted into the main body 5 and fixed with a tightening band (not shown) or the like so that the leading end of the flexible duct 1 does not overlap the undulating portion n along the outer peripheral surface of the main body 5.

Assuming that the building board 2 is, for example, a ceiling plate of a bathroom unitized in a house, a flexible duct 1 extending from a ventilation air conditioning unit as shown in FIG. Architectural board of ceiling board 2
And put it out of the bathroom through the mounting hole 3. An operator enters the bathroom and inserts and fixes the mounting member 4 to the distal end of the flexible duct 1 that has come out of the mounting hole 3. After this, FIG.
As shown in (B), the flexible duct 1 and the mounting member 4 are inserted into the mounting holes 3 so that the flange 6 of the main body 5 is brought into contact with the front side of the building board 2, and one hand is inserted into the main body 5 in this state. Then, both ends m of the wire spring 7 ′ are tilted 90 ° toward the inner peripheral surface of the main body 5. Then, each undulating portion n of the wire spring 7 ′ stands up by 90 ° from the outer peripheral surface of the main body 5, and each undulating portion n comes into elastic contact with the back side of the building board 2. By raising the undulating portion n in a one-touch manner, the building board 2 is sandwiched between the undulating portion n and the flange 6, the mounting member 4 is fixed to the building board 2 with one touch, and the building board 2 of the flexible duct 1 is formed.
Installation to the is completed.

As described above, in the mounting structure in which the building board 2 is sandwiched between the flange 6 of the mounting member 4 and the wire spring 7 ', even if the building board 2 is a resin board or the like which is difficult to fix with screws, it is always good. The flexible duct 1 can be attached. Further, in the one-touch type mounting structure by manual operation of the wire spring 7 'of the mounting member 4, since the skill is not required for the worker, construction of the ventilation air conditioning unit as shown in FIG. Even workers can do it in a short time.

Next, the mounting member 4 in another embodiment shown in FIGS. 6 and 7 will be described. As shown in FIG. 6, the mounting member 4 is a cylindrical main body made of a metal product or a resin molded product. 5 are integrally formed with a plurality of undulating claw pieces 7 "which are cut and raised from the inside at a plurality of positions. The enclosed portion is pushed from the inside, and its tip is bent inward. The distance of the nail piece 7 ″ from the flange 6 is set according to the thickness of the building board 2.

The mounting of the flexible duct 1 to the building board 2 using the mounting member 4 is performed in the manner shown in FIGS. 7A and 7B. Mounting hole 3 for building board 2
The main body 5 of the mounting member 4 is fitted and fixed to the distal end portion of the flexible duct 1 that has come out of the housing. Next, as shown in FIG. 7 (A), the flexible duct 1 and the mounting member 4
Into the mounting hole 3. When the flange 6 comes into contact with the front side of the building board 2, the claw pieces 7 "elastically recover outward,
It comes into contact with the back side of the building board 2. Thus, the building board 2 is sandwiched between the claw pieces 7 "and the flange 6, and the mounting of the mounting member 4 and the flexible duct 1 is completed.

[0022]

According to the duct mounting structure of the first aspect, the flange of the mounting member and the locking means sandwich the building board, and the mounting member and the duct supported by the mounting member are mounted on the building board. Even if the building board is made of a material such as resin board or heat insulation board, which is difficult to screw with, or a material with unreliable screwing, a highly versatile duct mounting that can attach the duct to it with high reliability Structure can be provided. In addition, since the duct can be mounted by raising and lowering the locking means of the main body of the mounting member with one touch, the duct can be easily and quickly mounted regardless of the skill level of the worker, and the duct for the ventilation and air conditioning equipment of a house can be installed. Construction costs can be reduced.

According to the duct mounting structure of the second aspect,
Flexible ducts, which were difficult to install in the mounting holes of the building boards, can now be easily and quickly mounted on the building boards. Construction becomes even easier and at lower cost.

According to the duct mounting structure of the third aspect,
Since the locking means installed on the body of the mounting member is a wire spring, the mounting member is resiliently applied to the building board by utilizing the elasticity of the wire spring, and therefore, there is some variation in the thickness of the building board. Can also be securely mounted. Further, the wire spring has an advantage that a low-cost one such as a steel wire can be applied.

According to the duct mounting structure of the fourth aspect,
Since the locking means installed on the main body of the mounting member is a claw piece integral with the main body, the mounting member can be made of one-piece material and low in manufacturing cost.

[Brief description of the drawings]

FIG. 1 is a side view including a partial cross section of a duct mounting structure showing an embodiment of the present invention.

FIG. 2 is a sectional view taken along the line TT in FIG. 1;

3 is a perspective view including a partly omitted portion of a mounting member in the duct mounting structure in FIG. 1; FIG. 3 (A) shows a state in which locking means (linear spring) is raised; FIG. FIG. 4 is a perspective view when the user is defeated.

FIG. 4 is a partial side view for explaining a duct mounting operation by the duct mounting structure. FIG. 4 (A) illustrates a case where a mounting member is mounted on a duct, and FIG. 4 (B) illustrates a case where the mounting member is mounted on a building board. It is a side view at the time.

FIG. 5 is a partial perspective view of a mounting member in the duct mounting structure of FIG. 1;

FIG. 6 is a perspective view of a mounting member in a duct mounting structure according to another embodiment of the present invention.

7A and 7B are side views including a partial cross-sectional view illustrating a duct mounting operation using the mounting member of FIG. 6; FIG. 7A is a side view when assembling the duct and the mounting member to a building board; FIG. It is a side view at the time of attaching an attachment member to a building board.

FIG. 8 is a plan view schematically showing a ventilation and air conditioning unit showing an example of a ventilation and air conditioning system of a house.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Duct 2 Building board 3 Mounting hole 4 Mounting member 5 Main body 6 Flange 7 Locking means 7 'Wire spring 7 "Nail piece

Claims (4)

[Claims] 1. A duct mounting structure for fixing a tip of a duct to a mounting hole formed in a building board, comprising: a tubular main body inserted into the mounting hole of the building board; and an outer periphery of one end of the main body. A mounting member having a flange protruding from the main body, and locking means provided at a plurality of positions of the main body so as to be able to be raised and lowered. The main body of the mounting member is inserted into a mounting hole of a building board, and With the end of the duct connected to the end, the locking means is protruded from the outer periphery of the main body, and the building board is clamped between the protruding locking means and the flange, whereby the mounting member and the duct are connected. And a duct mounting structure characterized by being mounted on a building board. 2. The duct mounting structure according to claim 1, wherein the duct is a flexible duct. 3. The duct mounting structure according to claim 1, wherein the locking means is a spring mounted on the main body so as to be able to move up and down. 4. The duct mounting structure according to claim 1, wherein the locking means is an up and down claw piece integrally formed with the main body.