JP2609025B2 - Ventilation fan for duct - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a ventilation fan for a duct, which is attached to a ceiling surface of a room or an office and is connected to a duct communicating with the outside to exchange indoor air.

[0002]

2. Description of the Related Art A ventilation fan for a duct is embedded in the ceiling.
When used by hanging from a slab, it is necessary to fix the body of the ventilation fan in several places, and an easier mounting method has been desired.

[0003] For this reason, a conventional duct ventilation fan is, for example, as shown in FIG.
And fix the hanging brackets 102 at two or four places,
The same number as the hanging metal fittings 102 were fixed to the anchor bolts 103 embedded in the slab with the nuts 104.

[0004]

In such a conventional structure, the main body 101 is not used in a high place work near the ceiling surface.
Is supported by one hand, and an anchor bolt 103 is attached to a hanging bracket 102 fixed to the main body 101 with the other hand.
Has to be inserted and the nut 104 must be tightened, which is extremely dangerous in performing the two operations at the same time.

An object of the present invention is to solve the above-mentioned problem, and an object of the present invention is to perform a mounting operation by hanging a main body safely, reliably and easily.

[0006]

A first means for achieving the above object of the present invention is a box having a suction port on a lower surface, a discharge port formed on one side wall, and a blower provided inside. -Shaped ventilation fan main body, and a screw threaded portion to which a screw provided substantially at the center of the top surface of the ventilation fan body is screwed, and the screw threaded portion is attached to a hanging anchor bolt provided behind the ceiling. It is a configuration of a duct ventilation fan in which the ventilation fan body is rotated and attached so as to be screwed together.

A second means for achieving the above object is a duct ventilation fan provided with a blower in which a ventilation fan main body is substantially positioned on a vertical center line of a screwed portion.

[0008] A third means for achieving the above object is a duct ventilation fan formed in a cylindrical shape in which a ventilation fan main body is detachable from a ventilation fan mounting hole opened in a ceiling.

A fourth means for attaining the above object is that of a ventilation fan for a duct in which a screw screw portion is provided with a support portion into which an anchor bolt is inserted.

[0010]

According to the first aspect of the present invention, since a screw thread is provided at one location substantially at the center of the top surface of the ventilation fan body, first, anchor bolts are embedded in the slab, By aligning the threaded portion provided on the top surface of the ventilation fan body with the anchor bolt embedded in the slab and rotating the ventilation fan body, the ventilation fan body can be fixed to the anchor bolt.

Further, according to the configuration of the second means, since the blower is provided substantially on the center line of the threaded portion of the ventilation fan main body, the weight of the fan supported by one anchor bolt can be reduced. Instability due to balance will be eliminated. Further, since the main body of the ventilation fan is made cylindrical by the configuration of the third means, anchor bolts are embedded in the slab so as to be substantially at the center of the ventilation fan mounting hole provided on the ceiling, and then the ventilation fan body is connected to the ceiling fan. The ventilation fan main body can be fixed by inserting it into the mounting hole, aligning a screw thread provided on the top surface of the ventilation fan main body with the anchor bolt, and rotating the ventilation fan main body.

Further, according to the configuration of the fourth means, since the screw threaded portion has a support portion, the screwed portion is inserted and supported by the anchor bolt, is screwed and fixed, and is fixed at two or more points. As a result, the main body is fixed, so that a stable and stable mounting state of the main body can be obtained.

[0013]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A first embodiment of the present invention will be described below with reference to FIG.

As shown in the drawing, the lower surface has a suction port 1,
A discharge port 2 is formed on one side wall, and a screw threaded portion 5 for screwing a screw is provided at substantially the center of the top surface of a ventilation fan main body 4 provided with a blower 3 therein.

Then, an anchor bolt 6 having a threaded portion at the tip is embedded in the slab under the ceiling.

When the ventilation fan body 4 is mounted in the above configuration, the screw threaded portion 5 provided on the top surface of the ventilation fan body 4 is aligned with the anchor bolt 6 embedded in the slab, and the ventilation fan body 4 is rotated. The screw thread 5 is screwed into the thread of the anchor bolt 6, and the ventilation fan body 4 is attached to the anchor bolt 6.

As described above, according to the ventilation fan for duct of the first embodiment of the present invention, the simple operation of rotating the ventilation fan main body 4 so that the screw threaded portion 5 is screwed into one anchor bolt 6 can be achieved. The ventilation fan body 4 can be provided on the ceiling surface,
The safety of the mounting operation is improved, and the number of parts is reduced as compared with the case where a plurality of anchor bolts are used.

Next, another embodiment of the first embodiment will be described with reference to FIG. The same components as those of the first embodiment are denoted by the same reference numerals, and description thereof will be omitted.

As shown in the figure, the present embodiment is different from the first embodiment in that a screw threaded portion 5 provided on the top surface of the ventilation fan main body 4 is provided on a reinforcing member 7 for reinforcing the top surface. There are features.

With the above configuration, even when the ventilation fan main body 4 is formed of a thin plate, the ventilation fan main body 4 is provided with the reinforcing member 7.
, The top surface of the ventilation fan main body 4 is prevented from being distorted by the weight of the ventilation fan main body 4, the inclination of the ventilation fan main body 4 after being attached to the anchor bolt 6, and the ceiling of the ventilation fan main body 4. The ventilation fan body 4 can be prevented from falling due to surface damage.

Next, a second embodiment of the present invention will be described.
This will be described with reference to FIG. The same components as those of the first embodiment are denoted by the same reference numerals, and description thereof will be omitted.

As shown in the figure, a motor mounting plate 8 is provided inside the ventilation fan main body 4, and a motor 10 for driving a fan 9 is mounted on the motor mounting plate 8 with a screw screw provided on the top surface of the ventilation fan main body 4. It is characterized in that it is provided almost on the center line A of the part 5 to constitute the blower 3A.

With the above structure, the position of the center of gravity of the ventilation fan main body 4 is supported, and one anchor bolt 6
As a result, instability due to weight imbalance in the case of being supported can be eliminated.

Next, a third embodiment of the present invention will be described with reference to FIG. As shown in the figure, the present embodiment is different from the first embodiment in that a ceiling plate 11 for installing a ventilation fan is provided.
It is characterized in that the ventilation fan main body 13 is formed in a cylindrical shape so that the ventilation fan main body 13 can be rotated by being inserted through the ventilation fan mounting hole 12 formed in the ventilation fan.

With the above structure, even after the ceiling plate 11 is attached, the ventilation fan mounting hole 12 is formed in the ceiling plate 11, and the anchor bolt 6 is attached to the slab above the ceiling corresponding to the center of the ventilation fan mounting hole 12. The ventilation fan main body 13 is inserted through the ventilation fan mounting hole 12 into the back of the ceiling, the screw threaded portion 5 provided on the top surface of the ventilation fan main body 13 is attached to the threaded portion of the anchor bolt 6, and the ventilation fan main body 13 is mounted By rotating in the hole 12, the ventilation fan main body 13 can be attached by screwing.

Next, a fourth embodiment of the present invention will be described with reference to FIG. As shown in the drawing, this embodiment is different from the first embodiment in that an anchor bolt 6 is inserted into a screw threaded portion 5 provided on the top surface of the ventilation fan main body 4 at an interval from the screw threaded portion 5. Is characterized in that the supporting portion 14 is integrally formed.

With the above configuration, when the ventilation fan main body 4 is attached to the anchor bolt 6, the support portion 1 formed integrally with the screw threaded portion 5 provided on the top surface of the ventilation fan main body 4.
4 is fitted around the outer periphery of the anchor bolt 6, and the screw threaded portion 5 is screwed and attached to the screw portion at the tip of the anchor bolt 6 by rotating the ventilation fan main body 4.

The ventilation fan body 4 attached in this manner is fixed to the anchor bolt 6 by the threaded portion 5 and supported by the support portion 14 with its inclination prevented.
It becomes a point support, and a stable attachment state is obtained.

[0029]

As is apparent from the above embodiments, according to the present invention, the ventilation fan main body is provided with a common threaded portion which is screwed and attached to one hanging anchor bolt provided on the ceiling back. The ventilation fan is attached by rotating it, so the installation work of the ventilation fan body is easy and the work safety is enhanced, and the installation work of the anchor bolt is also easy because it can be supported by one anchor bolt Therefore, it is possible to provide a duct ventilation fan that can improve workability and reduce the number of parts.

Further, by providing the blower inside the ventilation fan main body so as to be located substantially on the vertical center line of the screwing portion of the ventilation fan main body, instability due to the weight balance of the ventilation fan main body can be eliminated.

Further, by forming the ventilation fan main body into a cylindrical shape, even after the ceiling is pasted, mounting work can be performed using the ventilation fan mounting hole provided on the ceiling.

Further, by providing a support portion for supporting the anchor bolt in the screw threaded portion provided on the ventilation fan main body, the support of the ventilation fan main body is stabilized.

[Brief description of the drawings]

FIG. 1 is a side sectional view showing a state of attachment of a duct ventilation fan according to a first embodiment of the present invention.

FIG. 2 is a side cross-sectional view showing an attached state of a duct ventilation fan according to another embodiment of the first embodiment.

FIG. 3 is a side sectional view showing a state of attachment of the duct ventilation fan according to the second embodiment.

FIG. 4 is a perspective view of a duct ventilation fan showing a relationship with a ceiling plate according to the third embodiment.

FIG. 5 is a side sectional view showing a state where the duct ventilation fan according to the fourth embodiment is attached.

FIG. 6 is a side cross-sectional view showing a state in which a conventional duct ventilation fan is attached.

[Explanation of symbols]

 1 Suction Port 2 Discharge Port 3 Blower 3A Blower 4 Ventilation Fan Main Body 5 Screw Screwing Part 6 Anchor Bolt 12 Ventilation Fan Mounting Hole 13 Ventilation Fan Main Body 14 Supporting Part

Claims (4)

(57) [Claims] 1. A box-shaped ventilation fan body having a suction port on a lower surface, a discharge port formed on one side wall, and a blower provided inside,
A screw threaded portion for screwing a screw provided substantially at the center of the top surface of the ventilation fan main body, and the ventilation fan is screwed into a hanging anchor bolt provided behind the ceiling. A ventilation fan for ducts that is mounted by rotating the main unit. 2. The duct ventilation fan according to claim 1, wherein the ventilation fan body is provided with a blower substantially on the vertical center line of the threaded portion. 3. The ventilation fan for a duct according to claim 1, wherein the ventilation fan body is formed in a cylindrical shape detachable from a ventilation fan mounting hole opened in a ceiling. 4. The ventilation fan for a duct according to claim 1, wherein a support portion for inserting an anchor bolt is provided in the screw engagement portion.