JPH08120906A - Duct joiner - Google Patents

Abstract

PURPOSE: To provide a duct joiner, which can be easily housed even in the case where a clearance between the outer wall of a building and the unit wall is narrow. CONSTITUTION: A duct joiner is formed of an upper duct main body 7, which is provided with a duct connection part 7b having a projection 7f on the inner surface thereof at a right angle in one end of an upper duct barrel 7a, and a lower duct main body 8 provided with a cylindrical part 8b, in which at least one pair of surfaces opposite to each other of the cross sectional shape are formed nearly flat and in parallel with each other, at a right angle in one end of a lower duct barrel 8a. The other end of each upper duct barrel 7a and the lower duct barrel 8a are fitted to each other freely to be extended in the condition that the duct connection part 7b and the cylindrical part 8b are directed opposite to each other. Plural locking parts 7c are provided on the peripheral surface of the upper duct barrel 7a in the cross direction with an equal space, and plural locking parts 8c to be engaged with the locking parts 7c of the upper duct barrel 7a are provided on the peripheral surface of the lower duct barrel 8a.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a duct joiner which is connected to a duct from a ventilation device installed in a unit such as a bathroom or a toilet to exhaust the air to the outside of a building. Even if it is small, it can be installed easily.

[0002]

2. Description of the Related Art As is well known, a unit such as a bathroom or a toilet in a building is filled with steam, odor of filth, etc., and the air in each unit becomes dirty, and the dirty air has an unpleasant odor on the unit wall. It also causes the formation of mold and the like. In order to prevent this, it is necessary to replace the dirty air in each unit with fresh outside air to ensure a clean environment inside the unit.Therefore, a ventilation system is installed on the ceiling in each unit. ing. As shown in FIG. 5, the ventilation device 3 exhausts air to the outside of the outer wall 6 of the building through the connecting duct 10. In this case, since the eaves 5 of the building becomes an obstacle and the gap between the outer wall 6 of the building and the unit wall 2b is narrow, the above-mentioned connection for connecting with the duct 4 of the ventilation device 3 installed on the ceiling 2a of the unit 2 The duct 10 has a thin thickness such that the bellows-shaped straight portion 10a is crushed obliquely, and is placed in a gap between the outer wall 6 of the building and the unit wall 2b. Then, one end of the connecting duct 10 opposite to the duct 4 has an outer wall 6
Is connected to the cap 11 attached to the outside of the.

Further, as shown by an imaginary line, one end of the connecting duct 10 may be brought out of the outer wall 6 of the building and connected to a cap 11 attached to the back of the eaves 5.

[0004]

However, in the above-mentioned prior art, there is a problem that it is impossible to fit the connecting duct 10 into the narrow gap between the outer wall 6 of the building and the unit wall 2b as it is. . Further, there is a problem in that it is necessary to crush the connecting duct 10 each time in order to forcefully store the connection duct, which requires labor for construction.

The present invention solves the above problems and facilitates connection with a duct from a ventilation device installed in a unit such as a bathroom or a toilet even if the gap between the outer wall of the building and the unit wall is narrow. The purpose is to provide a duct joiner that can be stored.

[0006]

SUMMARY OF THE INVENTION The present invention has been made in view of the above circumstances, and the means is to have at least two opposing two surfaces having a cross-sectional shape which are substantially flat and substantially parallel to each other. The upper duct main body in which a duct connecting portion having a projection on the inner surface is provided in a right angle direction on one end side of the upper duct body that is a surface, and at least two facing surfaces of the cross-sectional shape are substantially flat. And a lower duct body having a tubular portion provided at a right angle on one end side of the lower duct body which is a substantially parallel surface, and the other end side of each of the upper duct body and the lower duct body. Is connected so that the duct connecting portion and the tubular portion are made to extend and contract by fitting so that they are in opposite directions.

A plurality of engaging portions are provided on the outer peripheral surface of the upper duct body at equal intervals in the width direction, and a plurality of engaging portions of the upper duct body are engaged with the outer peripheral surface of the lower duct body. There is an engaging part that fits.

Furthermore, the upper duct body is configured to be fitted in the lower duct body, and the support portion is interposed in the upper duct body.

[0009]

With the above means, the upper duct body and the lower duct body can be expanded and contracted in the height direction by the fitting connection of the upper duct body and the lower duct body, and the upper duct body and the lower duct body can be expanded and contracted in the height direction. It is possible to arbitrarily set the height level up to the tubular portion of the main body, but the height level is set freely within a predetermined range. At this time, the upper duct lower body and the lower duct lower body, which are housed in the outer wall and the unit wall, are easy to fit because at least one of the two surfaces of the cross-sectional shape facing each other is substantially flat and substantially parallel. The required displacement can be secured.

The height level can be set in several steps in the height direction by providing a plurality of engaging portions on the outer peripheral surface of the upper duct body and a plurality of engaging portions on the outer peripheral surface of the lower duct body. It can be changed to maintain the height.

Further, since the support portion is interposed in the lower duct body, it is possible to prevent the lower duct body from being easily flattened by external pressure or the like, and the ventilation function of the ventilation device installed in the room of the building. Smooth exhaust is achieved without disturbing

[0012]

【Example】

An embodiment of the present invention will be described below with reference to the drawings.

A duct joiner 1 according to the present invention, for example, as shown in FIG. 1, includes a duct 4 of a ventilation device 3 installed on a ceiling 2a of a unit 2 which requires ventilation, such as a bathroom and a toilet of a building. They are connected and used by interposing them in the gap between the outer wall 6 and the unit wall 2b near the eaves 5 of the building. This duct joiner 1 has an upper duct body 7 and a lower duct body 8 as will be described in detail with reference to FIGS.
The material is mainly made of synthetic resin or the like, but the material is not particularly limited.

The upper duct main body 7 has a duct of the ventilation device 3 at one end side of the upper duct body 7a in which at least one of the two surfaces of the cross-sectional shape which face each other are substantially flat and substantially parallel to each other. An annular duct connecting part 7 connected to the 4
b is integrally provided in the orthogonal direction. Further, locking portions 7c composed of a plurality of protrusions extending in the width direction are provided at equal intervals in the height direction on the two surfaces of the upper duct body 7a which are substantially flat and parallel to each other and which face each other. At the same time, a support portion 7d is provided on the inner surface of the upper duct body portion 7a so that the upper duct body portion 7a does not become uneven due to external pressure. Further, the other end edge of the upper duct body portion 7a is bent slightly inward to form a bent portion 7e. Furthermore, an inwardly projecting protrusion 7f is formed on the inner surface of the upper half of the duct connecting portion 7b, and a semicircular semicircular protrusion 7g having a wide area is formed at a predetermined portion of the protrusion 7f. It is provided. Further, the opening edge of the duct connecting portion 7b is formed by providing a backflow prevention piece 7h bent inward at a right angle.

On the other hand, the lower duct main body 8 has an outer wall of the building on one end side of the lower duct body 8a in which at least one of the two cross-sectional shapes facing each other are substantially flat and substantially parallel to each other. A cylindrical tubular portion 8b extending up to 6 is integrally provided in the orthogonal direction. Then, on the two surfaces of the lower duct body 8a, which are substantially parallel and parallel to each other, which face each other, the engaging portion 7c of the upper duct body 7a is provided.
A plurality of engaging portions 8c having recesses on the inner surface for engaging with are provided.

The upper duct body 7a is extendably connected according to the degree of insertion into the lower duct body 8a, and extends from the duct connecting portion 7b of the upper duct body 7 to the tubular portion 8b of the lower duct body 8. , That is, the height level from the position of the duct 4 of the ventilation device 3 to the exhaust position to the outside can be adjusted.

The engaging portion 7c of the upper duct body portion 7a and the engaging portion 8c of the lower duct body portion 8a are
By engaging with each other, the height level can be kept constant.

The duct connecting portion 7b is for connecting to the duct 4 of the ventilation device 3, and is connected by inserting one end of the duct 4 into the duct connecting portion 7b.

Further, the protrusion 7 in the duct connecting portion 7b is provided.
f serves as a stopper so that the duct 4 inserted in the duct connecting portion 7b does not enter more than necessary, and the outer diameter of the duct 4 is somewhat smaller than the inner diameter of the backflow prevention piece 7h of the duct connecting portion 7b. Has been devised so that even the

The backflow prevention piece 7h prevents the dew condensation water or the like from the dirty air exhausted from the duct 4 of the ventilation device 3 from flowing back and flowing down.

The support portion 7d is for preventing the upper duct body portion 7a from being flattened by external pressure or the like.

Further, the bent portion 7e is provided to facilitate the insertion into the lower duct body portion 8a.

Further, the cylindrical portion 8b of the lower duct body 8 is for being inserted into the outer wall 6 of the building and connected to the vent cap 9 to exhaust dirty air.

The upper duct main body 7 and the lower duct main body 8 thus formed are arranged so that the extending direction of the duct connecting portion 7b and the extending direction of the cylindrical portion 8b are opposite to each other, and the upper duct body portion 7a. The other end of the lower duct body 8a
It is inserted into the other end side of and is used by fitting and coupling, and in the coupled state, it can be expanded and contracted in the height direction. When the upper duct body portion 7a and the lower duct body portion 8a are provided with the locking portions 7c and the engaging portions 8c, they are firmly held by these engagements.

Duct joiner 1 connected in this way
Is a ventilation device installed on the ceiling 2a of the unit 2 inside the duct connecting portion 7b of the upper duct body 7 while being housed in the gap between the outer wall 6 of the building and the unit wall 2b that requires ventilation, such as a bathroom and a toilet. One end of the duct 4 of No. 3 is connected, while the connecting portion 9 of the vent cap 9 attached to the outer wall 6 located under the eaves 5 of the building in the tubular portion 8b of the lower duct body 8.
a is fitted and ventilation equipment is prepared. The dirty air in the unit 2 is discharged from the ventilation device 3 installed on the unit wall 2a.
Through the duct 4 to the upper duct body 7 and the lower duct body 8 of the duct joiner 1 in this order, and then to the outer wall 6 of the building.
It is exhausted to the outside air from the exhaust hole 9b of the vent cap attached to the.

In the duct joiner 1 having such a function, as shown in FIG. 4, the connecting portion between the upper duct main body 7 and the lower duct main body 8 is wrapped with a fixing material such as an adhesive tape 9 to increase the holding force. It is effective and more preferable to do so. In addition, when the height level of the duct joiner 1 reaches the minimum and it becomes necessary to further reduce the height level due to the convenience of installation at the construction site, as shown by the imaginary line, the upper duct It is advisable to adjust the lower duct body 8 by swinging it clockwise or counterclockwise with the center point of the duct connecting portion 7b of the body 7 as a fulcrum.

A duct joiner 1 constructed in this way
Is the connected upper duct body 7a and lower duct body 8
Since a has a small thickness, it can be easily accommodated in the gap between the outer wall 6 of the building and the unit wall 2b, and the support portion 7d is interposed in the upper duct body portion 7a so as to be easily leveled. Since it does not occur, smooth exhaust can be achieved without disturbing the ventilation function of the ventilation device.

[0029]

The duct joiner according to the first aspect of the invention has an effect that it can be easily accommodated even if the gap between the outer wall of the building and the unit wall is narrow. Then, the height level from the duct connecting portion of the upper duct main body to the tubular portion of the lower duct main body can be adjusted, and there is an effect that the mounting can be performed according to the construction site.

Also in the duct joiner according to the second aspect of the present invention, it is possible to obtain the same effect as described above and firmly maintain a constant height level from the duct connecting portion of the upper duct body to the tubular portion of the lower duct body. The effect is that you can do it.

In the duct joiner according to the third aspect of the present invention, since the upper duct body is not flattened by the external pressure, the ventilation function of the ventilation device is not hindered, and there is an effect that smooth exhaust can be achieved.

[Brief description of drawings]

FIG. 1 is a partially omitted sectional view showing a usage state of a duct joiner according to the present invention.

FIG. 2 is a partially omitted sectional view in which a main part of FIG. 1 is enlarged.

FIG. 3 is an exploded perspective view showing an embodiment of the present invention.

FIG. 4 is a vertical sectional side view showing an embodiment of the present invention.

FIG. 5 is a partially omitted sectional view showing a conventional example.

[Explanation of symbols]

 1 Duct Joiner 7 Upper Duct Body 7a Upper Duct Body 7b Duct Connection 7c Engagement 7d Support 7f Protrusion 8 Lower Duct Body 8a Lower Duct Body 8b Tubular 8c Engagement

Claims (3)

[Claims] 1. A duct connecting portion having a projecting portion on an inner surface thereof is provided at one end side of an upper duct body portion in which at least two opposing surfaces having a cross-sectional shape are substantially flat surfaces and substantially parallel surfaces. The upper duct main body provided in the right angle direction and the tubular portion in the right angle direction on one end side of the lower duct body in which at least one of the two cross-sectional shapes facing each other are substantially flat and substantially parallel to each other. It consists of the lower duct body provided,
A duct characterized in that the other end side of each of the upper duct body and the lower duct body is connected so as to be expandable and contractable by fitting so that the duct connection part and the tube part are in opposite directions. Joiner. 2. A plurality of engaging portions are provided on the outer peripheral surface of the upper duct body at equal intervals in the width direction, and are engaged with the plurality of engaging portions of the upper duct body on the outer peripheral surface of the lower duct body. The duct joiner according to claim 1, further comprising a mating engaging portion. 3. The duct joiner according to claim 1, wherein the upper duct body is fitted in the lower duct body, and a support portion is interposed in the upper duct body.