JP2001280661A - Ventilator - Google Patents

Abstract

PROBLEM TO BE SOLVED: To enable the main body case of a ventilator to be attached easily to a ceiling by easily, safely, and surely performing temporary tacking with both hands. SOLUTION: This ventilator is provided with a flange section 12 which is fixed to the room-side margin 3a of the opening 3 of the ceiling 2 on the bottom of its main body case 8 which is protruded into the garret of a room through the opening 3. On the main body case 8, a rib 19 which works as a projecting section for temporarily fixing the case 3 by coming into contact with the ceiling- side margin of the opening 3 is formed on one side face 8a and a chamfered section 9 is formed on the side face 8b of the case 8 on the side opposite to the side face 8a.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a ventilation fan which is mounted so as to protrude from an opening in a ceiling.

[0002]

2. Description of the Related Art Conventionally, Japanese Patent Application Laid-Open No. 9-4905 (F24F7 / 10) discloses this type of ventilation fan.
In addition, a flange portion is provided at the lower portion of the main body case and is fixed to the room side of the rim of the opening formed in the ceiling, and can be freely protruded and retracted from the side surface of the main body case on both side surfaces of the main body case, and is held by an adjusting screw. The one provided with the holding plate is shown.

This ventilation fan is inserted from the opening until the flange portion of the main body case comes into contact with the room side of the rim of the opening, and the holding plate is protruded from the main body case by operating an adjusting screw to open the rim of the opening. After being temporarily fixed by being placed on the ceiling side of the opening, the flange is fixed to the room side of the rim of the opening with a mounting screw.

However, when performing the temporary fixing, one hand must be released to operate the adjusting screw, and the entire weight of the main body case must be supported with one hand. As a result, the mounting operation is difficult to perform. . Further, since the main body case is supported by one hand, there is a possibility that the main body case may be erroneously dropped, and there is a problem in work safety.

[0005]

SUMMARY OF THE INVENTION It is an object of the present invention to provide a ventilating fan which can easily and safely mount a main body case.

[0006]

Means for Solving the Problems A first method for solving the above problems is described below.
Means for forming a flange at the lower part of the main body case projecting from the opening formed in the ceiling to the back of the ceiling, and in a ventilation fan having the flange fixed to the room side of the opening edge, the side of the main body case And a projection for temporarily fixing the main body case in contact with the ceiling of the opening edge, and chamfering a side opposite to the side having the projection.

[0007] With this, the chamfered side of the main body case is tilted downward, the main body case is inserted from the opening, and the main body case is rotated around the lower side of the main body case having the protruding portion so that the protruding portion is opened. The main body case can be temporarily fixed to the opening edge by being placed on the ceiling side of the edge. In addition, since the temporary fixing operation can be performed using both hands, the possibility of dropping the main body case can be reduced, and the operation can be performed safely and reliably.

A second means for solving the above-mentioned problem is to form a flange at a lower portion of a main body case projecting from the opening formed in the ceiling to the back of the ceiling, and to attach this flange to the room side of the opening edge. In the fixed ventilation fan, a projection is formed on the side surface of the main body to temporarily fix the main body case by contacting the ceiling side of the opening edge, and the side opposite to the side surface having the projection from the tip of the projection. Is shorter than the opening.

With this structure, the main body case is inserted into the opening from below the opening until the projection is positioned above the ceiling side of the opening edge, and is then moved horizontally to the projection side to thereby project the projection. The main body case can be temporarily fixed to the opening edge by placing the portion on the ceiling side of the opening edge. In addition, when performing the temporary fixing operation, since the main body case can be supported with both hands, the possibility of dropping the main body case can be reduced, and the operation can be performed safely and reliably.

In the above construction, the main body case comprises a main case and a duct connection plate having one end connected to a duct and the other end engaged with the main case. It is desirable to form

Thus, when the main body case is attached to the opening edge with the bellows-shaped duct connected to the duct connection plate, the heavy duct connection plate side can be supported by the opening edge.

More specifically, the protrusion is a rib formed in parallel with the flange.

[0013] The projection may be a plurality of ribs formed perpendicular to the flange.

[0014]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS FIGS. 1 to 3 show a duct ventilation fan as an example of the first embodiment of the present invention, and will be described below with reference to these drawings.

Reference numeral 1 denotes a duct ventilation fan (hereinafter, referred to as a main body) that projects from an opening 3 formed in a ceiling 2 and is attached to an edge of the opening 3 (here, a mounting frame for reinforcement is provided). , Box-shaped main case 4 and one side 4 of main case 4
The main case 4 is covered with a duct connection plate 16 described later provided in the main case 4 and a detachable cover 7 that covers the motor 6 attached to the upper surface of the main case 4. A chamfer 9 from the main case 4 to the cover 7 from the middle to the upper side of the other side surface 8b of the main body case 8
Are formed.

The main case 4 has an intake port 11 covered with a detachable grill 10 at a lower portion, and a flange portion projecting from a side surface of the main case 4 and fixed to a room side 3a of an opening 3 at an edge. 12 are formed. On the other hand, an exhaust port 13 communicating with the intake port 11 is formed on one side surface 4a.

In the main body case 8, a fan 14 driven by the motor 6 is provided so as to be surrounded by a fan casing 15 having an intake hole 15a on the bottom surface.
Thus, by rotating the fan 14, the grill 1
The air in the room sucked from the air inlet 11 through the air outlet 0 is exhausted to the air outlet 13 through the fan casing 15.

Reference numeral 16 denotes an L-shaped duct connecting plate,
3 is provided on one side surface 4a of the main case 4 so as to be detachable. Above the duct connection plate 16, the duct 1
The connection portion 18 to which the connection 7 is connected is formed integrally. A rib 19 as a projection abutting on the ceiling side 3b of the edge of the opening 3 is provided below the connection portion 18 of the duct connection plate 16.
Are integrally formed. The rib 19 is formed parallel to the flange 12 of the main case 4.

The connecting portion 18 has an exhaust port 1 inside.
An exhaust passage 20 that communicates between the inside of the duct 3 and the inside of the duct 17 is formed. In the exhaust passage 20, a shutter 21, which is pivotally supported at an upper end by the connecting portion 18 and is opened by being pushed up by the wind pressure of the exhaust air by the fan 14, is provided.
Abutment surface 22 against which the periphery of shutter 21 abuts when stopped
Are formed.

The main body 1 having the above-described structure exhausts the air sucked into the fan casing 15 from the intake hole 15a to the exhaust port 13 by rotating the fan 14 by the motor 6 as shown in FIG. The shutter 21 is pushed up and opened by the wind pressure of this exhaust, and the air in the room is
The air is exhausted to the outside through the air conditioner 7.

Further, when the fan 14 is stopped, the shutter 21 rotates downward by its own weight and comes into contact with the contact surface 22 so that the exhaust passage 20 is closed. This prevents the wind blown into the duct 17 from the outside from blowing into the room via the main body case 8.

Next, a method of attaching the main body 1 to the three edges of the opening formed in the ceiling 2 will be described.

A bellows-like duct 17 is pulled out from an opening 3 formed in the ceiling 2 and is connected to a connecting portion 18 of a duct connecting plate 16.
Connect to In this state, hold the body case 8 with both hands,
The chamfer 9 (other side surface 8b) of the main body case 8 is tilted downward to move the main body case 8 upward from the connection portion 18 and rotate around the lower side of one side surface 8a of the main body case 8 to form the opening 3 The rib 19 is inserted and the rib 19 is positioned on the ceiling side 3b of the edge of the opening 3 (the state of FIG. 3). Then, the main case 8 is further rotated, and the rib 19 is placed on the ceiling side 3b of the opening 3 to complete the temporary fixing.

In this temporarily fixed state, one hand is separated from the main body case 8, and a mounting screw 23 is inserted into a mounting hole (not shown) formed in the flange portion 12 to fix the flange portion 12 to the edge of the opening 3. (See FIG. 4). Finally, by attaching the grill 10 to the main body case 8 so as to cover the intake port 11, the attaching operation is completed.

As described above, one side surface 8a of the main body case 8
Of the main body case 8 is distributed to the hands supporting the three edges of the opening portion and the main body case 8 by temporarily setting the ribs 19 formed on the ceiling portion 3b of the opening portion 3 at the ceiling side 3b. be able to. Therefore, when fixing the flange portion 12 to the opening 3 rim, the load applied to the hands supporting the main body case 8 can be reduced, and the mounting operation can be facilitated.

When the main body case 8 is temporarily fixed,
Since there is no need to release one hand and the operation can be performed with both hands, the risk of dropping the main body case 8 can be reduced, and the work at this time can be performed safely and reliably.

As described above, the duct connecting plate 16
By forming the rib 19 placed on the edge of the opening 3,
When attaching the main body case 8 to the three edges of the opening with the bellows-shaped duct 17 connected to the connection part 18 of the duct connection plate 16, the heavy duct connection plate 16 side is supported by the three edges of the opening. be able to. Therefore, the main body case 8
When mounting the device, the load applied to the hands supporting the main body case 8 can be reduced more effectively.

Further, since the chamfer 9 is formed from the middle to the upper part of the other side surface 8b of the main body case 8, the ribs 19 are formed.
Can be prevented from being obstructed by the other side surface 8b of the main body case 8 when the device is inserted from the opening 3 and placed on the ceiling side 3b of the edge of the opening 3.

In the first embodiment, the ribs 19 formed in parallel with the flange 12 are used as the projections mounted on the rim of the opening 3. However, FIGS. As shown, it may be constituted by a plurality of ribs 51 formed perpendicular to the flange portion 12.

Further, the rib 19 as a protrusion is provided on one side surface 8a of the box-shaped main body case 8 and the chamfer 9 is formed on the other end side. However, the protrusion is formed on the side surface of the cylindrical main body case. A chamfer may be formed on the side opposite to the side having the protrusion.

In the first embodiment, a rib 19 as a protrusion is formed on one side surface 8a of the main body case 8 and a chamfer 9 is formed on the other side surface 8b. As in the embodiment, a rib 19 as a protrusion is formed on one side surface 8a of the main body case 8, and the length A from the tip of the rib 19 to the other side surface 8b is formed smaller than the opening width B of the opening 3. May be.

In this case, the connecting portion 18 of the duct connecting plate 16
After being positioned on the ceiling side 3b so as not to be caught by the opening 3, as shown in FIG. 7, the rib 1 is moved upward with the flange portion 12 being parallel to the ceiling.
9 is located on the ceiling side through the opening 3. And
As shown in FIG. 8, by moving the main body case 8 to one side surface 8 a side (arrow side), the rib 19 can be placed on the ceiling side 3 b of the opening 3 and temporarily fixed.

[0033]

According to the first aspect of the present invention, the chamfered side of the main body case is inclined downward, the main body case is inserted from the opening, and the main case is rotated about the lower side of the side having the projection. Thus, the main body case can be temporarily fixed to the opening edge by placing the projection on the ceiling side of the opening edge, and the main body case can be attached in this temporarily fixed state. Therefore, the load applied to the hand supporting the main body case can be reduced, and the mounting operation can be easily performed. In addition, since the temporary fixing operation can be performed using both hands, the possibility of dropping the main body case can be reduced, and the operation can be performed safely and reliably.

According to the second aspect of the present invention, after the main body case is inserted into the opening from below the opening until the projection is positioned above the ceiling side of the opening edge, the main body case is horizontally moved to the projection side. The main body case can be temporarily fixed to the opening edge by placing the protrusion on the ceiling side of the opening edge by moving the main body case in this temporarily fixed state. it can.
Therefore, the load applied to the hand supporting the main body case can be reduced, and the mounting operation can be easily performed. In addition, when performing the temporary fixing work, the main body case can be supported with both hands, so that the possibility of dropping the main body case can be reduced, and the work can be performed safely and reliably.

According to the third aspect of the present invention, when attaching the main body case to the opening edge in a state where the bellows-shaped duct is connected to the duct connection plate, the heavy duct connection plate side is connected to the opening edge. The main body case 8
When mounting the device, the load applied to the hands supporting the main body case 8 can be reduced more effectively.

According to the fourth aspect of the present invention, the projecting portion can temporarily fix the main body case by the rib formed parallel to the flange portion, and the mounting operation can be performed in this state. Therefore, the mounting operation can be easily performed.

According to the fifth aspect of the present invention, the main body case can be temporarily fixed by the plurality of ribs formed perpendicularly to the flange portion, and the mounting operation can be performed in this state. Mounting work can be easily performed.

[Brief description of the drawings]

FIG. 1 is a front sectional view of a ventilation fan according to a first embodiment of the present invention.

FIG. 2 is a right side view of the ventilation fan.

FIG. 3 is a front view of a state where the ventilation fan is temporarily stopped.

FIG. 4 is a front view in which a flange portion of the ventilation fan is about to be mounted on a ceiling.

FIG. 5 is a front view when the ventilation fan is provided with another type of rib.

FIG. 6 is a right side view in FIG.

FIG. 7 is a front view of a second embodiment of the present invention in a state where a ventilation fan is inserted into an opening.

FIG. 8 is a front view of a state where the ventilation fan is temporarily stopped.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Main body 2 Ceiling 3 Opening 3a Room side of opening edge 3b Ceiling side of opening edge 8 Main body case 8a One side of main body case 8b Other main surface of main body case 9 Chamfer 12 Flange part 19, 51 Rib (projection) A) The length from the tip of the rib to the other side B) The width of the opening

Claims (5)

[Claims] 1. A ventilation fan, wherein a flange portion is formed at a lower portion of a main body case projecting from the opening formed in the ceiling to the back of the ceiling, and the flange portion is fixed to a room side of an opening edge of the main body case. A ventilation fan, wherein a projection is formed on a side surface to temporarily fix the main body case in contact with a ceiling side of the opening edge, and a side surface opposite to the side surface having the projection is chamfered. 2. A ventilation fan, wherein a flange is formed at a lower portion of a main body case projecting from the opening formed in the ceiling to the back of the ceiling, and the flange is fixed to a room side of an opening edge of the main body case. Along with forming a projection that temporarily abuts the main body case by contacting the ceiling side of the opening edge on the side surface, the length from the tip of the projection to the side surface opposite to the side surface having the projection is defined as the length. A ventilation fan characterized by being smaller than the opening. 3. The main body case includes a main case, a duct connecting plate having one end connected to a duct and the other end engaging with the main case, and forming the protrusion on the duct connecting plate. The ventilation fan according to claim 1 or 2, wherein the ventilation fan is provided. 4. The ventilation fan for a duct according to claim 1, wherein the protrusion is a rib formed in parallel with the flange. 5. The ventilation fan according to claim 1, wherein the projection is a plurality of ribs formed perpendicular to the flange.