JPH07248139A - Shutter mounting apparatus for ventilation fan - Google Patents

Abstract

PURPOSE:To provide a shutter mounting apparatus for a ventilating fan in which a mounting operation of the shutter is simplified and the number of parts is reduced. CONSTITUTION:A pair of shutter supports 25 are provided on a mounting plate of a ventilating fan body, each of which supports has a holding hole 27 and a slit 28 facing each other in a ventilation port 21, and a shaft 29 and a stopper 30 are integrally provided at opposite positions on opposite sides of a resilient flat plate shutter 24. When the shutter 24 is mounted, the shutter 24 is resiliently deformed in the ventilation port 21 and simultaneously the shafts 29 located on the opposite sides are inserted into the slit 28 through an opening 28a at each shutter support 25 and is moved to the holding hole 27.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a shutter mounting device for a ventilation fan, in which a shutter having an open air pressure is rotatably mounted in a cylindrical exhaust port.

[0002]

2. Description of the Related Art A conventional structure of a shutter mounting device for a ventilation fan of this type will be described with reference to FIGS. Figure 1
Reference numeral 5 shows the installation state of the duct ventilation fan. In FIG. 15, the main body frame 2 in which the blower 1 is arranged is arranged behind the ceiling, and is attached to the outer surface of the main body frame 2 on the exhaust side. A plate 3 is arranged, and an exhaust port body 4 having a cylindrical exhaust port 4a through which air discharged from the blower 1 passes is attached to an outer surface of the mounting plate 3. A duct 5 is connected to the exhaust port 4a.

A wind pressure open type shutter 6 for opening and closing the exhaust port 4a is rotatably mounted in the exhaust port 4a, and its specific mounting structure is shown in FIG.
Through FIG. The exhaust port body 4 has a pair of shutter support parts 7 each having an insertion hole 7a in the exhaust port 4a.
Are provided facing each other. A pair of mounting portions 6b having shaft insertion holes 6a are formed at positions facing both sides of the shutter 6 so as to correspond to the shutter support portion 7.

However, the shutter 6 has the exhaust port 4
Each shaft insertion hole 6a is aligned with the insertion hole 7a of the shutter support portion 7 in a, and while the shaft 9 inserted in the tube 8 is elastically deformed together with the tube 8 (see the chain double-dashed line in FIG. 18), both ends of the shaft 9 The shaft through hole 6a and the through hole 7a
By being inserted into the exhaust port 4a, the exhaust port 4a is rotatably attached. The mounting plate 3 is provided with a stopper 10 for restricting the rotational position of the shutter 6 in the closing direction.

[0005]

However, in the above-mentioned conventional structure, when the shutter 6 is attached, the shaft insertion holes 6a of the shutter 6 are aligned with the insertion holes 7a of the shutter support portion 7 and the tube 8 is attached. It is necessary to insert both ends of the inserted shaft 9 into the shaft insertion hole 6a and the insertion hole 7a while elastically deforming the inserted shaft 9 together with the tube 8, which is a troublesome mounting operation. Further, since the tube 8 and the shaft 9 are separately required, there are disadvantages that the number of parts is large and the cost is high.

Therefore, an object of the present invention is to provide a shutter mounting device for a ventilation fan, in which the shutter mounting operation is simple and the number of parts can be reduced.

[0007]

In order to achieve the above-mentioned object, a shutter mounting device for a ventilating fan according to the present invention is provided with a ventilating fan main body having a main body frame in which a blower is disposed, and an external surface of the ventilating fan main body. And an exhaust port body having a cylindrical exhaust port through which the air discharged from the blower passes, and a ventilation hole main body which is provided at a position opposite to the exhaust port, has a holding hole, and has one end with this holding hole. A pair of shutter support portions, which are in communication with each other, have a slit that is open at the tip end side of the exhaust port with respect to the holding hole and above the holding hole, and has a plate shape that is elastically deformable, and is disposed in the exhaust port. And a shutter of open air pressure that is integrally provided at opposite sides of the shutter, and is opened in a slit of the shutter support portion in a state where the shutter is elastically deformed in the exhaust port. Is inserted from the parts characterized in was constructed having a pair of shaft portions which are rotatably supported in the holding hole (claim 1).

In this case, the shutter support portion may be provided on the exhaust port body instead of the ventilation fan main body (claim 2).

In order to further facilitate the mounting operation of the shutter, a projection for guiding the insertion of the shaft is provided above the opening of the slit in the shutter support (claim 3), or the tip of the shaft is provided. An inclined portion that opens in the direction away from the shutter is formed at the side edge of the retaining portion provided on the shutter side on the shutter side (claim 6), or the upper edge of the slit is curved upwardly. It is preferably formed (claim 7). Further, the slit may be configured such that the opening side is formed in a horizontal state toward the tip side of the exhaust port and the holding hole side is formed in an inclined state in which the holding hole side is inclined downward toward the holding hole (claim 8). ).

A stopper for restricting the rotational position of the shutter in the closing direction may be provided on the shutter support portion (claim 4), or a holding hole in the shutter support portion may be provided.
You may make it provide the shaft stopper which regulates the rotation position of the shaft part in the closing direction (Claim 5).

[0011]

According to the means of claims 1 and 2, when the shutter is attached, the shaft portions on both sides are opened in the slits of the respective shutter support portions while elastically deforming the shutter so as to bend in the exhaust port. Insert from and move to the holding hole. This allows the shutter to be rotatably attached inside the exhaust port.

According to this, the shutter can be attached by a simple operation of inserting the shaft portion into the slit of the shutter support portion while elastically deforming the shutter. Moreover, the tube and the shaft which were required conventionally are not needed.

According to the third aspect of the present invention, when the shaft portion is inserted into the opening of the slit, the projecting portion serves as an insertion guide, so that the shaft portion can be easily inserted. Further, according to the means of claim 6, even though there is a retaining portion at the tip of the shaft portion, the shutter side edge of the retaining portion is opened in the direction away from the shutter. Easy to insert when inserting into the slit.

According to the means of claim 7, since the upper edge portion of the slit is formed in a curved shape which is convex upward, when the shaft portion is inserted into the slit and moved to the holding hole side. The amount of elastic deformation of the shutter can be reduced. Further, according to the means of claim 8, since the opening portion of the slit faces the side where the shaft portion is inserted, when the shaft portion is inserted into the opening portion of the slit, the shutter can be hardly elastically deformed and There is an advantage that the shaft portion can be easily inserted into the slit opening portion.

According to the means of claim 4, since the shutter stopper is provided on the shutter supporting portion,
Since the stopper can be formed together with the shutter support portion, the processing is easier than when a stopper is separately provided. Further, according to the means of claim 5, since the shaft stopper is provided in the holding hole in the shutter support portion, there is the same advantage as in claim 4.

[0016]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A first embodiment of the present invention will be described below with reference to FIGS. FIG. 5 shows the mounting state of the duct ventilation fan. In FIG. 5, a blower 14 having a motor 12 and blades 13 rotatably driven by the motor 12 is provided in a main body frame 11 having an open lower surface. The main body frame 11 includes a lower flange portion 11
It is arranged behind the ceiling by attaching and fixing a to a wooden frame 16 provided on the ceiling 15. A mounting plate 17 is arranged on the outer surface of the body frame 11 on the exhaust side, and ventilation holes 18 and 19 for exhaust are formed in the body frame 11 and the mounting plate 17 in a communicating state.

The main body frame 11, the mounting plate 17, and the blower 14 constitute a ventilation fan main body 20. A decorative frame (not shown) is attached to the lower surface of the main body frame 11.
The underside of is covered. An exhaust port body 22 having a cylindrical exhaust port 21 communicating with the ventilation holes 18 and 19 is attached to the outer surface of the mounting plate 17, and a duct 23 is connected to the exhaust port 21.

An air pressure open type shutter 24 for opening and closing the exhaust port 21 is rotatably attached to the inside of the exhaust port 21, and its specific mounting structure is shown in FIGS. 1 to 4. Has been done.

On the mounting plate 17, a pair of shutter support portions 25 are provided in the exhaust port 21 so as to face each other, and a stopper 26 is provided in the lower portion of the exhaust port 21. A circular holding hole 27 and a slit 28 are formed in each shutter support portion 25. Of these, the slit 28 is formed obliquely so that one end communicates with the holding hole 27 and the other end opens on the tip end side of the exhaust port 21 and above the holding hole 27 (the opening is 2
8a).

The shutter 24 is made of synthetic resin (thickness is, for example, about 0.3 to 1.0 mm) and has a flat plate shape capable of elastic deformation. A pair of shafts 29 are integrally projecting laterally at opposite positions on both left and right sides of the shutter 24, and a triangular retaining portion 30 is provided at the tip of each shaft 29. Are provided integrally.

The shutter 24 is mounted in the exhaust port 21 as follows. That is, the shutter 24 is inserted into the exhaust port 21 while being elastically deformed so as to be curved (see the chain double-dashed line in FIGS. 1 and 2), and the shaft portions 29 on both sides are formed into the slits 2 of each shutter support portion 29.
8 is inserted from the opening 28a and moved to the holding hole 27. As a result, the shutter 28 can be rotatably attached inside the exhaust port 21.

Here, with the shutter 28 attached, the shaft portion 29 is prevented from coming out of the holding hole 27 from the fully closed position shown by the solid line in FIG. 3 to the fully opened position shown by the chain double-dashed line in FIG. Has been done. The shutter 24 is regulated in its closing position (clockwise direction in FIGS. 2 and 3) by a stopper 26.

In the above structure, when the blower 14 in the ventilation fan main body 20 is driven, the air in the room is removed from the main body frame 11
The air sucked into the air vent 1
The air is discharged to the exhaust port 21 side through Nos. 8 and 19, and is discharged to the outside from the exhaust port 21 through the duct 23 while rotating the shutter 24 in the opening direction by the discharged air.

According to the first embodiment described above, the shutter 28 is inserted into the exhaust port 21 by a simple operation of inserting the shaft portions 29 into the slits 28 of the shutter support portions 25 while elastically deforming the shutter 24. Can be installed. Further, since the tube and the shaft which are conventionally required are not required, the number of parts can be reduced correspondingly, which can contribute to the cost reduction.

FIG. 6 shows a second embodiment of the present invention. This second embodiment differs from the above-mentioned first embodiment in the following points. That is, a pair of shutter support parts 33 having a holding hole 31 and a slit 32 are integrally provided in the exhaust port 21 of the exhaust port body 22 (only one shutter support part 33 is shown in FIG. 6). . Also in such a second embodiment, the same operational effect as in the first embodiment can be obtained.

FIG. 7 shows a third embodiment of the present invention. This third embodiment differs from the first embodiment in the following points. That is, in the shutter support portion 25,
A protrusion 34 for guiding the insertion of the shaft 29 is integrally provided above the opening 28 a of the slit 28.

According to the third embodiment, the lower edge portion 34a of the projecting portion 34 projects from the opening portion 28a of the slit 28 in the first embodiment toward the tip side of the exhaust port 21 (right side in FIG. 7). It projects upwards and the shaft 29 is slit 2
Since the projecting portion 34 serves as an insertion guide when the shaft portion 29 is inserted into the opening portion 28a of 8, the shaft portion 29 can be easily inserted.

FIG. 8 shows a fourth embodiment of the present invention. This fourth embodiment differs from the first embodiment in the following points. That is, the slit 35 in the shutter support portion 25 is formed so that the width gradually increases from the holding hole 27 side to the opening portion 35a side. Also in such a fourth embodiment, the shaft portion 29 for the slit 35 is formed.
Has the advantage that it can be easily inserted.

FIG. 9 shows a fifth embodiment of the present invention, which is different from the first embodiment in the following points. That is, in the shutter support portion 25,
A stopper 36 that is located below the holding hole 27 and projects toward the shutter 24 side (the side of the opposing shutter support portion 25) is integrally provided. This stopper 36
Is for restricting the rotational position of the shutter 24 in the closing direction, and is an alternative to the stopper 26 in the first embodiment.

According to the fifth embodiment, since the shutter support portion 25 is provided with the stopper 36, the stopper 36 can be formed together with the shutter support portion 25, and when the stopper 26 is provided on the mounting plate 17. Compared with this, there is an advantage that processing is easy.

FIG. 10 shows a sixth embodiment of the present invention. This sixth embodiment differs from the first embodiment in the following points. That is, shaft stoppers 38 that restrict the rotational position of the shaft portion 29 in the closing direction are provided above and below the holding hole 37 in the shutter support portion 25. The sixth embodiment also has the same advantages as the fifth embodiment.

FIGS. 11 and 12 show a seventh embodiment of the present invention. This seventh embodiment differs from the first embodiment in the following points. That is, the side edge of the shutter 24 on the side of the shutter 24 in the retaining section 30 of the shutter 24 is located on the upper and lower sides of the shaft 29, and the parallel section 39 parallel to the side edge 24 a of the shutter 24 and the parallel section 39. An inclined portion 40 that is continuous with the tip and opens in a direction away from the shutter 24 is formed. The inclined portion 40 faces outward from the parallel portion 39 by the angle θ.

According to the seventh embodiment, although the retaining portion 30 is provided at the tip of the shaft portion 29, the retaining portion 3 is provided.
Inclination part 40 which opens to the direction away from the shutter 24 at 0
By forming the shaft portion 29, when the shaft portion 29 is inserted into the slit 28, there is a margin in the axial direction of the shaft portion 29, and the shaft portion 2
It is easy to insert 9 into the slit 28. Moreover, when the shaft portion 29 is held in the holding hole 27, the parallel portion 39 that is parallel to the side edge portion of the shutter 24 is formed on the side near the shaft portion 29, and thus rattling is unlikely to occur.

FIG. 13 shows an eighth embodiment of the present invention. The eighth embodiment differs from the first embodiment in the following points. That is, in the slit 41 of the shutter support portion 25, the upper edge portion 41b is formed in a curved shape that is convex upward. According to the eighth embodiment, the shaft portion 2
9 is inserted into the opening 41a of the slit 41 to hold the holding hole 27.
When the shutter 24 is moved to the side, the amount of elastically deforming the shutter 24 can be reduced, so that the mountability can be further improved.

FIG. 14 shows a ninth embodiment of the present invention, which is different from the first embodiment in the following points. That is, the slit 42 of the shutter support portion 25 is formed in a horizontal state in which the opening 42 a side is directed toward the tip end side (right side) of the exhaust port 21 and the holding hole 27 side is inclined downward toward the holding hole 27. Has been done.

According to the ninth embodiment, since the opening 42a of the slit 42 faces the side where the shaft 29 is inserted (the tip side of the exhaust port 21), the shaft 29 is opened 42a of the slit 42. There is an advantage that the shutter 24 is hardly elastically deformed when it is inserted into the slot 42 and the shaft 29 is easily inserted into the opening 42a of the slit 42.

The present invention is not limited to the above embodiments, but can be modified or expanded as follows.
Some duct ventilation fans have a configuration in which the exhaust port body 22 having the exhaust port 21 is directly attached to the outer surface of the main body frame 11 without using the mounting plate 17, but the present invention is also applied to this type of ventilation fan. be able to. In this case, the ventilation fan main body 20 is composed of the main body frame 11 and the blower 14, and the shutter support portion 25 can be provided on the main body frame 11.

The shutter 24 is not limited to the synthetic resin, and may be an aluminum alloy (having a thickness of about 0.3 to 0.8 mm) or a steel plate (having a thickness of 0.
3 to 0.8 mm).

[0039]

According to the shutter mounting device for the ventilation fan of the first and second aspects, the shutter is installed in the exhaust port by a simple operation of inserting the shaft portion into the slit of the shutter support while elastically deforming the shutter in the exhaust port. Since it can be attached, the shutter can be attached more easily than before. Further, since the tube and the shaft which are conventionally required are not required, the number of parts can be reduced correspondingly, which can contribute to the cost reduction.

According to the shutter attachment device for the ventilation fan of the third aspect, when the shaft portion is inserted into the opening of the slit, the projecting portion serves as an insertion guide, so that the shaft portion can be easily inserted.

According to the shutter mounting device for the ventilation fan of the fourth aspect, since the shutter stopper is provided in the shutter supporting portion, the stopper can be formed together with the shutter supporting portion, and compared with the case where the stopper is separately provided. There is an advantage that processing becomes easy. Further, according to the shutter attachment device of the ventilation fan of the fifth aspect, since the shaft stopper is provided in the holding hole in the shutter support portion, there is the same advantage as the case of the fourth aspect.

According to the shutter mounting device for the ventilation fan of the sixth aspect, even though there is a retaining portion at the tip of the shaft portion, the shutter side edge of the retaining portion is open in the direction away from the shutter. Therefore, when inserting the shaft portion into the slit, there is a margin in the axial direction of the shaft portion, and the shaft portion can be easily inserted into the slit.

According to the shutter attachment device of the ventilation fan of claim 7, since the upper edge portion of the slit is formed in a curved shape which is convex upward, the shaft portion is inserted into the slit to the holding hole side. The amount of elastic deformation of the shutter when moving can be reduced.

According to the shutter attachment device for the ventilation fan of claim 8, since the opening of the slit faces the side where the shaft is inserted, the shutter is almost elastic when the shaft is inserted into the opening of the slit. There is an advantage that it is not deformed and the shaft portion can be easily inserted into the opening portion of the slit.

[Brief description of drawings]

FIG. 1 shows a first embodiment of the present invention and is an exploded perspective view of a main part with a part broken away.

FIG. 2 is a vertical sectional side view of a main part.

FIG. 3 is a partially enlarged vertical side view of a main part.

FIG. 4 is an exploded perspective view of main parts

[Fig. 5] Vertical side view of the entire ventilation fan for ducts

FIG. 6 is a vertical sectional side view of an exhaust port body showing a second embodiment of the present invention.

FIG. 7 is a partially enlarged side view of a shutter support portion showing a third embodiment of the present invention.

FIG. 8 is a diagram corresponding to FIG. 7 showing a fourth embodiment of the present invention.

FIG. 9 is a view corresponding to FIG. 7, showing a fifth embodiment of the present invention.

FIG. 10 is a diagram corresponding to FIG. 7 showing a sixth embodiment of the present invention.

FIG. 11 is a perspective view of a shaft portion and a retaining portion according to a seventh embodiment of the present invention.

FIG. 12 is a front view of a shaft portion and a retaining portion.

FIG. 13 is a view corresponding to FIG. 7, showing an eighth embodiment of the present invention.

FIG. 14 is a view corresponding to FIG. 7, showing a ninth embodiment of the present invention.

FIG. 15 is a view corresponding to FIG. 5 showing a conventional configuration.

FIG. 16 is a perspective view of an exhaust port body with a shutter attached.

FIG. 17 is a view corresponding to FIG.

FIG. 18 is a view equivalent to FIG.

[Explanation of symbols]

Reference numeral 11 is a main body frame, 14 is a blower, 17 is a mounting plate, 20 is an exhaust fan main body, 21 is an exhaust port, 22 is an exhaust port body, 24 is a shutter, 25 is a shutter support portion, 27 is a holding hole, 28
Is a slit, 28a is an opening portion, 29 is a shaft portion, 30 is a retaining portion, 31 is a retaining hole, 31 is a holding hole, 32 is a slit, 33 is a shutter supporting portion, 34 is a protruding portion, 35 is a slit, 36 is a stopper, and 37 is a holding portion. A hole, 38 is a shaft stopper, 40 is an inclined portion, 41 is a slit, 41a is an opening portion, 41b is an upper edge portion, 42 is a slit, and 42a is an opening portion.

Claims (8)

[Claims] 1. A ventilation fan main body having a main body frame in which a blower is disposed, and an exhaust port body attached to an outer surface of the ventilation fan main body and having a cylindrical exhaust port through which air discharged from the blower is passed. The ventilating fan body is provided in the exhaust port so as to face the exhaust port, has a holding hole, one end communicates with the holding hole, and the other end opens on the exhaust port front end side from the holding hole and above the holding hole. A pair of shutter supporting parts having slits, an elastically deformable flat plate-shaped shutter arranged in the exhaust port and having an open air pressure, and shutters integrally provided at opposite sides of the shutter. A pair of shaft portions that are elastically deformed in the exhaust port and that are inserted into the slits of the shutter support portion from the openings and are rotatably supported in the holding holes. Shutter mounting apparatus ventilators characterized. 2. A ventilation fan main body having a main body frame in which a blower is arranged, and an exhaust port body attached to the outer surface of the ventilation fan main body and having a cylindrical exhaust port through which air discharged from the blower passes. The exhaust port body is provided at a position facing the exhaust port,
A pair of shutter support parts having a holding hole, one end communicating with this holding hole, and the other end having a slit opening on the tip side of the exhaust port with respect to the holding hole and above the holding hole, and elastically deformable A shutter having a flat plate shape and arranged in the exhaust port and having an open air pressure, and integrally provided at opposite positions on both sides of the shutter, and the shutter support part is elastically deformed in the exhaust port. A shutter mounting device for a ventilation fan, comprising: a pair of shaft portions that are inserted into the slits from the opening portions thereof and are rotatably supported by the holding holes. 3. A shutter mounting device for a ventilation fan according to claim 1, wherein a projection for guiding the insertion of the shaft is provided above the opening of the slit in the shutter support. 4. The shutter mounting device for a ventilation fan according to claim 1, wherein the shutter supporting portion is provided with a stopper that restricts a rotational position of the shutter in the closing direction. 5. A shutter for a ventilation fan according to claim 1, wherein the holding hole in the shutter support portion is provided with a shaft stopper for restricting a rotational position of the shaft portion in the closing direction. Mounting device. 6. The shaft portion has a retaining portion at a tip portion thereof, and an inclined portion that opens in a direction away from the shutter is formed at a side edge portion of the retaining portion on the shutter side. A shutter attachment device for a ventilation fan according to any one of 1 to 5. 7. The ventilation fan shutter mounting device according to claim 1, wherein an upper edge portion of the slit is formed in a curved shape that is convex upward. 8. The slit is formed such that the opening side is horizontally oriented toward the tip end side of the exhaust port, and the holding hole side is inclined so as to descend downward toward the holding hole. A shutter mounting device for a ventilation fan according to any one of 1 to 6.