JPH06147584A - Exterior terminal component of ventilating apparatus - Google Patents

Abstract

PURPOSE:To obtain the exterior terminal parts of a ventilating apparatus which can perform an excellent rain water shedding function by a method wherein a cap body is enlarged peripherally from the inner end of its connecting part into contact with exterior wall, and a freely rotatable vane is provided confronting the exterior opening part CONSTITUTION:A vent cap consists of a cylindrical connecting part 2 adapted to be fitted into an outer open end of a ventilating duct 1 and a hood-like cap body 3 peripherally enlarged from the inner end of the cylindrical connecting part 2 into contact with an exterior wall W. The cap body 3 is provided in its interior with a freely rotatable vane 14 supported on a shaft 13 in a position located outwardly of the outer open end of the ventilating duct and confronting a gallery part 10. The rotating vane 14 is mounted to the end of the shaft retained by a V-shaped mounting leg 15, whereby the rotating vane 14 can rotate within the radial operating range corresponding to the radius of an opening part 9 of a hood 5 confronting the opening part 9 thereof. This arrangement of the ventilating fan prevents the intrusion of rain water into the ventilating apparatus.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an outdoor terminal part of a ventilation system which is mounted at the open end on the outdoor side of a ventilation system for ventilation by air supply or exhaust for the purpose of preventing rain.

[0002]

2. Description of the Related Art A conventional vent cap as an outdoor terminal component of a ventilation system has a structure as disclosed in, for example, Japanese Utility Model Laid-Open No. 187234/1987. That is, FIG.
As shown in FIG. 2, a connection port 21 having a flange 20 that is connected to the outdoor open end of the ventilation system by internal fitting and that bulges in the radial direction at its outdoor end, and a round shape that covers the outside of the connection port 21. And a roof type cap body 22. Cap body 2
A gallery 23 is provided in the inside 2 for the purpose of preventing birds, and the gallery 23 and the cap main body 22 are fastened together with a flange 20 of the connection port 21 with a screw. In the attached state, the rear end edge of the cap body 22 contacts the outer wall W as shown in the figure, and the ventilation system communicates with the opening 24 that opens downward below the front surface of the cap body 22 via the connection port 21.

By mounting the vent cap having the above-mentioned structure at the open end of the ventilation system on the outdoor side, it is possible to prevent the entry of wind and rain and birds and animals into the ventilation system.

[0004]

In the conventional vent cap described above, the prevention of rainwater from entering is achieved only by covering the open end of the cap body 22 on the outdoor side, so that a satisfactory rainproof function is not necessarily obtained. It was not done, and sometimes rainwater entered the ventilation system.
In addition, since the drain or the like from the ventilation system reaches the flange 20 through the connection port 21 and travels down from the flange 20 to the surface of the outer wall W, the appearance of the outer wall W may be damaged by dirt. I'm out.

The present invention has been made in order to solve the conventional problems, and the first object thereof is to provide an outdoor terminal component of a ventilation system having an excellent rainproof function.
The third object is to provide an outdoor terminal component for a ventilation system that is less likely to be contaminated by drains on the outer wall and the like, and the third is to provide an outdoor terminal component for a ventilation system that can reduce costs.

[0006]

According to a first aspect of the present invention, there is provided an outdoor terminal component for a ventilation system, which comprises a connection port to be connected to an outdoor opening end of the ventilation system and an outdoor side opening of the connection port on the outdoor side of the connection port. A hood-shaped cap main body that is configured to cover the end so that the contact surface to the outer wall facing the outdoor opening end of the ventilation system is projected outward from the inner diameter of the connection port. In addition, a rotary blade that freely rotates while facing the outdoor opening of the cap body is provided.

The outdoor terminal component of the ventilation system according to the second aspect of the present invention, in particular, is one in which the rotary vanes are attached to the outside of the outdoor end of the connection port.

The outdoor terminal component of the ventilation system according to the third aspect of the present invention particularly relates to the cap body, in which the outer peripheral portion of the contact surface against the outer wall of the cap body is erected outside, and the lower side of the protrusion is projected downward. The amount is increased to form a flange.

The outdoor terminal component of the ventilation system according to the fourth aspect of the present invention particularly relates to the cap body, and has a gallery portion for bird protection integrally formed in the outdoor opening thereof.

[0010]

In the first and second aspects of the invention, the rotary vanes in the cap body rotate due to the ventilation flow due to the ventilation operation and the air flow due to the blowing of the outside air, and even if rainwater enters, the rotary vanes block or rotate. Since it will be blown off by the blades, it will hardly enter the ventilation system.

Further, in the third aspect of the invention, the drain from the ventilation system is made to drop by being separated from the outer wall surface by the flange formed on the outer peripheral portion of the contact surface against the outer wall.

Further, according to the fourth aspect of the invention, since it is not necessary to manufacture the gallery part as a separate part, the assembly is facilitated and the number of parts can be reduced.

[0013]

DESCRIPTION OF THE PREFERRED EMBODIMENTS FIG. 1 is a sectional view showing a vent cap as an outdoor end part of a ventilation system in an attached state showing an embodiment of the present invention, and FIG. 2 is a front view thereof.

As can be seen from FIG. 2, the vent cap of this embodiment is a type called a round type in which the front shape is circular and the spherical hood is bulged forward. The tubular connection port 2 is fitted and connected to the outdoor open end, and the outdoor side of the tubular connection port 2 is configured to cover the outdoor open end so that ventilation is possible.
The hood-shaped cap main body 3 has a contact surface with respect to the outer wall W, which is larger than the inner diameter of the hood. A flange 4 is formed at the outdoor end of the cylindrical connection port 2. The cap body 3 is composed of a spherical hood 5 having a front structure and a back member 6 forming a contact surface with the outer wall W having a back structure, and a standing portion 7 formed on an outer peripheral portion of the back member 6. The peripheral edge of the hood 5 is fitted inside and integrated by the screw 8.

On the lower front side of the hood 5, an obliquely downward opening 9 is formed. The opening 9 serves as a substantially outdoor open end of the ventilation system, and is opened together with the integral molding by punching out the gallery 10 for bird protection and animal protection. On the lower side of the upright portion 7 of the back member 6, the protrusion amount is formed to be large particularly in the downward tilted state, and the drainage flange 11 in the apron state is formed. In addition, 12 is a notch for drainage formed in the lower peripheral edge of the hood 5,
The cap body 3 and the tubular connection port 2 are integrated by caulking and joining the flange 4 to the inside of the back member 6.

Inside the cap body 3, a rotary blade 14 supported by a shaft 13 so as to be freely rotatable is installed in a position facing the gallery portion 10 outside the open end of the tubular connection port 2 on the outdoor side. . The rotary vane 14 is attached to a shaft end held by a V-shaped mounting leg 15 so that the rotary vane 14 can face the opening 9 and rotate with a diameter substantially corresponding to the opening 9 of the hood 5. Both ends of the mounting foot 15 are fixed by being fastened together by a screw 8 connecting the hood 5 and the back member 6.

The vent cap having the above-mentioned structure is mounted by fitting the tubular connection port 2 into the outdoor opening end of the duct 1 of the ventilation system and screwing it to the outer wall W at a key part of the back member 6 to be in a functional state. . Ventilation flow due to ventilation operation is duct 1
Or the rotating blades 14 inside the cap body 3 due to the air flow caused by the blowing of the outside air into the cap body 3.
Rotates. Even if rainwater enters from the gallery portion 10 while the rotary vanes 14 are rotating, the rotary vanes 14 block the rainwater.
Alternatively, it will be blown off by the rotary blades 14. The rainwater adhering to the rotary vanes 14 drops and travels along the drainage flange 11 from the notch 12 and drops from a position separated from the outer wall W. The rainwater blown off by the rotary vanes 14 is also drained from the drainage flange 11.

Further, when the drain flows out from the duct 1, the notch 12 is transmitted from the tubular connection port 2 through the back member 6.
Is guided to the drainage flange 11 and drops from a place separated from the outer wall W. Therefore, the surface of the outer wall W is not contaminated by drainage or rainwater drainage, and the appearance of the outer wall W is less likely to be impaired. In terms of manufacturing, most of them can be formed by press molding, and the gallery portion 10 can also be integrally molded, so that the cost can be reduced by reducing the number of parts.

[0019]

As is apparent from the above description of the embodiments, according to the first and second aspects of the present invention, the rotary vanes in the cap body rotate due to the ventilation flow due to the ventilation operation and the air flow due to the blowing of the outside air. However, even if rainwater enters, it will be blocked by the rotary blades or blown off by the rotary blades, so that the entry of rainwater into the ventilation system can be more effectively prevented.

According to the third aspect of the invention, the drain from the ventilation system can be separated from the surface of the outer wall by the flange formed on the outer peripheral surface of the contact surface against the outer wall and can be dropped to drain the water, and the outer wall is unlikely to be dirty. It is possible to reduce the loss of the appearance of the outer wall.

Further, according to the fourth aspect of the invention, since it is not necessary to manufacture the gallery part as a separate component, the assembly is facilitated and the number of components can be reduced, so that the cost can be reduced.

[Brief description of drawings]

FIG. 1 is a cross-sectional view of an attached state of a vent cap according to an embodiment of the present invention.

FIG. 2 is a front view of the vent cap according to the embodiment of this invention.

FIG. 3 is a cross-sectional view of an attached state of a vent cap as the conventional example.

[Explanation of symbols]

 1 Duct 2 Cylindrical Connection Port 3 Cap Main Body 7 Standing Part 9 Opening Part 10 Gallery Part 11 Drainage Flange 13 Shaft 14 Rotating Blade

Claims (4)

[Claims] 1. A connection port to be connected to an outdoor opening end of a ventilation system, and an outdoor side of the connection port so as to cover the outdoor end of the connection port so that ventilation is possible. Also, a hood-shaped cap body whose outer surface facing the outdoor open end of the ventilation system overhangs in the outer peripheral direction, and is rotatably supported in the cap body, and freely rotates facing the opening of the cap body. Ventilation system outdoor terminal parts having rotating blades. 2. The rotary vane is attached outside an open end of the connection port on the outdoor side.
Ventilation system outdoor terminal parts described in. 3. The cap main body is configured such that an outer peripheral portion of a contact surface against an outer wall of the cap main body is erected outwardly, and particularly a lower side is formed with a erected flange with a large amount of protrusion in a downward inclined state. An outdoor terminal component for a ventilation system according to claim 1. 4. The outdoor terminal component for a ventilation system according to claim 1 or 3, wherein the cap body has a structure in which a gallery portion for bird protection is integrally formed in an outdoor opening thereof.