JPH07280317A - Ceiling ventilating fan - Google Patents

Abstract

PURPOSE:To easily mount a ceiling ventilating fan in the ceiling by providing on a pendant fitment a temporary stopper plate where a width size has a specific notch. CONSTITUTION:Upon mounting a body on an anchor bolt, the anchor bolt is inserted into a front half of a through-hole 19a where a temporary plate 22 is not present and simultaneously a pendant fitment 19 is passed over through the anchor bolt. Thereafter, the suspension fitment 19 (body) is directed to slide in the direction where it goes along the through-hole 19a (forward direction in the figure. Hereby, a notch 22a in the temporary plate 22 is inserted into the anchor bolt to the middle of the same. Since the width size of the notch 22a is smaller than the outer diameter but is larger the root diameter, the temporary stopper part 22a is caught by the thread of the anchor bolt for manifestation of temporary stopping, whereby ther suspension fitment 19, particularly the body are held in a temporarily stopped state.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a ceiling ventilation fan in which a main body frame having a blower therein is attached to an anchor bolt provided downward in the ceiling.

[0002]

2. Description of the Related Art A conventional mounting structure for a ceiling ventilation fan of this type will be described with reference to FIGS. That is, as shown in FIG. 14, a main body 1 of a ventilation fan for a ceiling is configured by arranging a blower 3 in a main body frame 2 having a rectangular box shape with an open lower surface, and an opening formed in a ceiling of a building. Downward (inside the room)
It is fitted from above and is placed in the area under the ceiling. An exhaust duct (not shown) is connected to one side surface of the body frame 2, and a decorative panel (not shown) is attached to the lower surface opening of the body frame 2. There is.

As shown in FIG. 15, the structure A under the ceiling is provided with two anchor bolts 4 and 4 each having a male screw portion formed downward, while the main body frame is provided. Plate-shaped hanging fittings 5, 5 are fixed to the left and right portions of the upper end of the drawing 2 so as to extend laterally. A circular through hole 5 a having a diameter larger than that of the anchor bolt 4 is formed in each of the hanging fittings 5.

With this, the attachment of the main body 1 is such that the upper nuts 6 are screwed into the anchor bolts 4 in advance, and the hanging fittings 5 are fitted into the anchor bolts 4 from below through the through holes 5a. And then the lower nut 7 until the hanging metal fitting 5 is sandwiched between it and the upper nut 6.
Is carried out by tightening the anchor bolts 4.

[0005]

However, in the above-described conventional configuration, when the main body 1 is attached to the anchor bolt 4, the operator supports the main body 1 with one hand, for example, so as not to drop the other hand. There is a drawback in that the installation work is troublesome and time-consuming, because the work that involves considerably difficulty such as tightening the lower nut 7 with the work must be performed and the work must be performed at a high place. Furthermore, improvement in work safety was also desired.

The present invention has been made in view of the above circumstances, and an object of the present invention is to provide a ceiling ventilation fan which can be easily attached to an anchor bolt on the back of a ceiling.

[0007]

According to a first aspect of the present invention, there is provided a ceiling ventilation fan provided with a hanging metal fitting having a through hole in a main body frame having a blower therein, and an anchor bolt provided downward on the ceiling. It is attached to the ceiling part by tightening a nut to the anchor bolt in a state where the hanging metal fitting is fitted and inserted through the through hole, and the through hole of the hanging metal fitting is formed in a long hole shape. At the same time, the suspension metal fitting has a substantially U-shaped cut portion located on the end side of the through hole and having a width dimension smaller than the outer diameter of the anchor bolt and larger than the root diameter. Is provided so that the inner edge portion of the cut portion projects inward of the through hole.

In this case, two types of notches corresponding to two types of anchor bolts having different outer diameter dimensions may be provided at both ends of the through hole, respectively (invention of claim 2). . Further, the inner edge portions of the cutout portion of the temporary fixing plate which are opposed to each other may be displaced from each other in accordance with the screw pitch of the anchor bolt (invention of claim 3), or the inner edge portion of the cutout portion of the temporary fixing plate may be changed to the anchor bolt It is also possible to bend downward so as to be substantially perpendicular to the inclination angle of the leading flank (the invention of claim 4).

According to a fifth aspect of the present invention, there is provided a ceiling ventilation fan provided with a hanging bracket having a through hole in a main body frame having a blower therein, and the through hole is passed through an anchor bolt provided downward on the ceiling. By tightening the nut on the anchor bolt in a state where the hanging metal fitting is inserted,
Attached to the ceiling part, the through hole of the hanging metal fitting is formed in a long hole shape, the hanging metal fitting is located on an end side of the through hole, and the inner dimension is the anchor bolt. It is characterized in that a temporary fixing portion projecting inward of the through hole so as to be smaller than the outer diameter and larger than the root diameter is integrally formed by flat pressing.

[0010]

According to the ceiling ventilator of the first aspect of the present invention, the through hole of the hanging fitting has a long hole shape, and the width dimension is outside the anchor bolt on the end side of the through hole. Since the temporary fixing plate having the cut portion smaller than the diameter and larger than the root diameter is provided so as to project inward of the through hole, the mounting work can be performed as follows. That is, first, while inserting the anchor bolt into the part of the through hole of the suspension fitting where the temporary fixing plate does not project inward, insert the suspension fitting into the anchor bolt, and then penetrate the suspension fitting. By moving in the direction along the hole, the notch part of the temporary fixing plate is inserted into the middle part of the anchor bolt. As a result, the temporary fixing plate is hooked on the screw thread and exhibits a retaining action, so that the hanging metal fitting is held in the temporary fixing state by the anchor bolt. Therefore, after that, it is not necessary for an operator to support the main body frame, and the work of tightening the nut to the anchor bolt can be easily performed correspondingly.

In this case, if two kinds of notch portions corresponding to two kinds of anchor bolts having different outer diameter dimensions are respectively provided at both ends of the through hole (the invention of claim 2), One type of hanging metal fitting can be used for two types of anchor bolts, and parts can be shared. Further, if the inner edge portions of the cutout portion of the temporary fixing plate that are opposed to each other are displaced relative to each other in accordance with the screw pitch of the anchor bolt (invention of claim 3), the hanging metal fitting and thus the main body frame can be leveled. It will be possible to attach it to the anchor bolt while maintaining. Further, if the inner edge portion of the cut portion of the temporary fixing plate is bent downward so as to be substantially perpendicular to the inclination angle of the advancing flank of the anchor bolt (invention of claim 4), the suspension can be achieved. The inner edge portion of the temporary fixing plate bites into the thread of the anchor bolt in the withdrawal direction of the metal fitting so that the temporary fixing can be performed more firmly.

According to the ventilating fan for a ceiling of claim 5 of the present invention, the through hole of the hanging fitting has a long hole shape, and the inner dimension is an anchor bolt on the end side of the through hole. The temporary fixing part that protrudes inward of the through hole so that it is smaller than the outer diameter and larger than the root diameter is formed integrally with the hanging metal fitting by flat pressing, so attach as follows. You can do the work. That is, first, while inserting the anchor bolt through the portion of the through hole of the hanging metal fitting where the temporary fixing portion is not formed, insert the hanging metal fitting into the anchor bolt, and then insert the hanging metal fitting into the through hole. Move along and insert the temporary fixing part into the middle part of the anchor bolt. As a result, the temporary fixing portion catches on the screw thread and exhibits a retaining effect, so that the hanging metal fitting is held in the temporary fixing state by the anchor bolt. Therefore, after that, it is not necessary for an operator to support the main body frame, and the work of tightening the nut to the anchor bolt can be easily performed correspondingly. In this case, since the temporary fixing portion is formed integrally with the hanging fitting by flat pressing, the number of parts can be reduced.

[0013]

EXAMPLES Some examples of the present invention will be described below.
This will be described with reference to FIGS. 1 to 13. (1) First Embodiment First, a first embodiment (corresponding to claim 1) of the present invention will be described with reference to FIGS. 1 to 6. FIG. 6 shows a main body 11 of a ceiling ventilation fan according to this embodiment.
1, a blower 15 including a centrifugal multi-blade fan 13 and a fan motor 14 is disposed inside a main body frame 12 having a rectangular box shape with an opened lower surface.

Although not shown in detail, the main body 11
Is inserted into the opening portion formed in the ceiling of the building from below (inside the room), is arranged in the space behind the ceiling, and is attached as described later. Also, the main frame 1
An exhaust duct (not shown) is connected to one side surface of the body 2, and a decorative panel (not shown) is attached to the lower surface opening of the main body frame 12. With this, when the blower 15 is driven, the air in the room passes from the decorative panel through the bell mouth 16 and the main body frame 1
It is designed to be sucked into the inside of the chamber 2 and discharged through the exhaust duct.

The mounting structure of the main body 11 is shown in FIG.
It will be described with reference to FIGS. As shown in FIG. 6, two anchor bolts 17, 17 are provided downward in the ceiling by embedding and fixing the upper ends of the two anchor bolts 17 in the structure A of the building. This anchor bolt 17,1
As shown in FIGS. 2 to 5, a male screw portion 18 is formed over the entire body 7.

On the other hand, at the left and right ends of the upper surface of the main body frame 12, metal plate hanging metal fittings 19, 19 having a so-called lightning stepped shape are respectively extended so as to extend laterally. For example, they are fixed by screwing. In addition, in this case, in the laterally extending portion of the hanging fitting 19, in this case, a long hole-shaped through hole 19a extending in the front-rear direction is formed. Then, as shown in FIG. 1 and FIG. 3, the width dimension L of the through hole 19a is
It is made larger than the outer diameter dimension D of the anchor bolt 17 (male thread portion 18).

As will be described later in detail, when mounting the main body 11, the upper nut 20 is screwed onto the anchor bolt 17 in advance, and the hanging bolt 19 is attached to the anchor bolt 17 from below through the through holes 19a. After that, the lower nut 21 is tightened to the anchor bolt 17 until the hanging metal fitting 19 is sandwiched between the lower nut 21 and the upper nut 20.

In the present embodiment, the hanging fitting 1
A metal temporary fixing plate 22 is provided on the lower surface of 9. The temporary fixing plate 22 is made of, for example, a steel plate of 0.3t to 1.0t, and has a U shape as a whole as shown in FIG. 1. Therefore, the temporary fixing plate 22 has a substantially U-shaped cut portion 22a. Is configured. At this time, as shown in FIG. 3, the width dimension M of the cut portion 22a is set to be smaller than the outer diameter dimension D of the anchor bolt 17 (male thread portion 18) and larger than the root diameter dimension d of the male thread portion 18. Has been formed. The open end of the notch 22a of the temporary fixing plate 22 has a rounded shape.

The temporary fixing plate 22 is fixed to the lower surface of the hanging fitting 19 by spot welding, for example, so that the notch 22a overlaps the end of the through hole 19a, in this case, the rear portion. As a result, the inner edge portion of the cutout portion 22a of the temporary fixing plate 22 protrudes inward of the through hole 19a, so that the anchor bolt 17 is freely inserted through almost the first half of the through hole 19a. That is, the latter half is a temporary fixing portion that is locked to the anchor bolt 17 by the temporary fixing plate 22.

In attaching the main body 11 to the anchor bolt 17 in the above structure, as shown in FIG. 3, first, as shown in FIG. 3, the upper nut 20 is screwed to a predetermined position of the anchor bolt 17 in advance, and the through hole is formed. 19a to the anchor bolts 17 from below respectively to the hanging metal fittings 19
Will be inserted. At this time, as shown in FIG. 2A, the hanging metal fitting 19 is fitted into the anchor bolt 17 while inserting the anchor bolt 17 into the front half of the through hole 19a where the temporary fixing plate 22 does not exist. At this time, since the width dimension L of the through hole 19a is larger than the outer diameter D of the anchor bolt 17, the anchor bolt 17 can be freely inserted.

Then, after the hanging metal fitting 19 is inserted until the hanging metal fitting 19 comes into contact with the lower surface of the upper nut 20, the hanging metal fitting 19 (main body 11) is moved in the direction along the through hole 19a (in FIG. 1). Slide it to the front). Then, FIG. 2 (b)
As shown in FIG. 4 and FIG.
Will be inserted into the middle portion of the anchor bolt 17. At this time, since the open end of the cutout portion 22a of the temporary fixing plate 22 has a rounded shape, the insertion is smoothly performed.

As a result, the width M of the notch 22a is smaller than the outer diameter D of the anchor bolt 17 and larger than the root diameter d, so that the temporary fixing plate 22 is fixed to the anchor bolt 17.
By engaging with the screw threads of and exhibiting a retaining effect,
The hanging fitting 19 and thus the main body 11 are held by the anchor bolts 17 in a temporarily fixed state. After that, as shown in FIG. 5, the lower nut 21 is tightened to the anchor bolt 17, and the hanging metal fitting 19 is sandwiched between the upper nut 20 and the lower nut 21, whereby the anchor bolt 1
The attachment of the main body 11 to 7 is completed.

In such a mounting operation, the hanging metal fitting 19 is temporarily attached to the anchor bolt 17 by a simple operation such as inserting the hanging metal fitting 19 upward with respect to the anchor bolt 17 and then sliding it. Since it is held in the stopped state, it is not necessary to support the main body 11 thereafter, and the work of tightening the lower nut 21 to the anchor bolt 17 can be easily performed correspondingly.

It should be noted that, in the above-mentioned temporary fixing state, an upward reaction force due to the load of the main body 11 acts on the temporary fixing plate 22 of the hanging fitting 19 from the anchor bolt 17, but the temporary fixing plate 22. Is provided on the lower surface of the hanging fitting 19, so that it does not come off from the hanging fitting 19 even if it is not firmly fixed to the hanging fitting 19.

As described above, according to this embodiment, the hanging fitting 1
The through hole 19a of 9 has a long hole shape, and the through hole 19a
Since the temporary fixing plate 22 is provided at the end side of the main body 11, the main body 11 can be easily held in the temporary fixing state during the attachment work to the anchor bolt 17. Therefore, unlike the conventional work in which an operator must perform the mounting work while supporting the main body 1 with one hand, the mounting work can be easily performed in a short time, and the work can be performed at a high place. It is possible to obtain an excellent effect that the safety of the existing work can be improved. In addition, it is not necessary to use a particularly expensive material as the material of the temporary fixing plate 22, and the structure can be relatively simple and inexpensive.

In the above embodiment, the hanging metal fitting 19 (main body 11) is slid forward and backward so that the notch 22a of the temporary fixing plate 22 is inserted into the anchor bolt 17; Through holes 19a and temporary fixing plates 22 are provided in the lower metal fitting 19 in point symmetry, and the main body 11 is moved in the rotation direction (for example, the right hanging metal fitting 19 is slid forward and the left hanging metal fitting 19 is moved backward). It may be configured to be in a temporarily fixed state by sliding it to (1). Further, at this time, the through hole 19a may be formed in a long hole shape having a gentle arc shape.

Next, second to sixth embodiments of the present invention will be described in order below. In addition, in these 2nd-6th Example, since the structure of the main body 11 etc. is common in the said 1st Example, the same code | symbol is attached | subjected about the same part as the said 1st Example, and it is illustrated and detailed. Description will be omitted, and only different points will be described below.

(2) Second Embodiment FIGS. 7 and 8 show a hanging fitting 31 according to a second embodiment (corresponding to claim 1) of the present invention. Also in this suspension fitting 31, an elongated hole-shaped through hole 31a having a width dimension L larger than the outer diameter dimension D of the anchor bolt 17 is formed, but in the present embodiment, this through hole 3 is formed.
Temporary fixing plates 32, 32 are provided at both ends of 1a, respectively. Each temporary fixing plate 32 is provided with a substantially U-shaped cut portion 32a having a width dimension M smaller than the outer diameter dimension D of the anchor bolt 17 and larger than the root diameter dimension d of the male screw portion 18.

According to this structure, the anchor bolt 1 is attached to the central portion of the through hole 31a where the temporary fixing plate 32 does not exist.
The main body 11 can be held in a temporarily fixed state by inserting the suspension metal fittings 19 into the anchor bolts 17 from below while sliding the suspension metal fittings 7 through, and then sliding the suspension metal fittings 19 in either the front-back direction. . Further, the main body 11 can be held in the temporarily fixed state regardless of which direction the main body 11 is rotationally moved. Therefore, in addition to the effects similar to those of the first embodiment, even when an obstacle exists in the vicinity of the installation site of the main body 11, the direction to avoid the obstacle can be selected and slid. It is possible to obtain the advantage of being able to.

(3) Third Embodiment FIGS. 9 and 10 show a hanging fitting 41 according to a third embodiment (corresponding to claim 2) of the present invention. In this hanging metal fitting 41, the through hole 4 having a long dimension and having a width dimension L is formed.
1a is formed, and two kinds of different temporary fixing plates 42 and 43 corresponding to the two kinds of anchor bolts 17 having different diameters are provided at both ends of the through hole 41a.

That is, as the anchor bolt 17 of this type, two types of M8 and M10 having different diameters are generally used, and one temporary fixing plate 42 is, for example, M8.
Has a U-shaped notch 42a having a width N1 corresponding to the anchor bolt 17 of
It has a U-shaped notch 43a having a width N2 corresponding to the anchor bolt 17. The through hole 4
The width dimension L of 1a is made larger than the outer diameter dimension D of the anchor bolt 17 of M10.

According to this embodiment, similarly to the first embodiment, the suspending metal fitting 41 (main body 1) is provided by the temporary fixing plates 42 and 43.
Since (1) can be held in the anchor bolt 17 in a temporarily fixed state, the mounting work can be easily performed in a short time, and the safety of the work in high place work can be improved. Further, in this embodiment, one type of hanging fitting 4
Since it is possible to deal with two types of anchor bolts 17 with one, the parts can be shared and the utility is high.

In the above second and third embodiments,
I tried to install two temporary fixing plates on each hanging metal fitting,
It is also possible to provide one temporary fixing plate having two notches on both sides, as if the two temporary fixing plates were connected to each other at a position separated from the through hole and integrated.

(4) Fourth Embodiment FIG. 11 shows a fourth embodiment (corresponding to claim 3) of the present invention. Also in this embodiment, the hanging fitting 51 is provided with a through hole 51a having a long hole shape, and a temporary fixing plate 52 having a substantially U-shaped notch 52a is provided on the end side thereof. In this embodiment, the left and right facing portions of the inner edge portion of the cutout portion 52a of the temporary fixing plate 52, which project inward of the through hole 51a, have heights corresponding to the pitch of the male screw portion 18 of the anchor bolt 17. Specifically, in the drawing, specifically, the left valley and the right valley are displaced from each other by a height corresponding to a height-wise interval P.

According to this structure, the same effects as those of the above-described first embodiment can be obtained, and the hanging metal fitting 51 and thus the main body 11 are temporarily fixed to the anchor bolt 17 in a state where the horizontality is maintained. And will be able to be installed.

(5) Fifth Embodiment FIG. 12 shows a hanging fitting 61 according to a fifth embodiment (corresponding to claim 4) of the present invention. Also in this embodiment, the hanging fitting 61 is provided with a through hole 61a having a long hole shape, and a temporary fixing plate 62 having a substantially U-shaped cutout portion 62a is provided on the end side of the lower surface thereof. And in this embodiment,
Of the inner edge portion of the cutout portion 62a of the temporary fixing plate 62, the left and right opposing portions projecting inward of the through hole 61a are bent downward. In this case, the bending angle is set to be substantially perpendicular to the inclination angle of the leading flank of the male screw portion 18 of the anchor bolt 17.

According to this structure, similarly to the first embodiment and the like, the suspending metal fitting 61 (main body 1
1) can be retained in the anchor bolt 17 in a temporarily fixed state. At this time, with respect to the direction (downward) in which the hanging fitting 61 is pulled out from the anchor bolt 17, the inner edge portion of the temporary fixing plate 62 is the anchor. It is possible to bite into the thread of the bolt 17 for more secure temporary fixing.

(6) Sixth Embodiment FIG. 13 shows a hanging fitting 71 according to a sixth embodiment (corresponding to claim 5) of the present invention. The hanging metal fitting 71 of this embodiment is different from that of the first embodiment and the like in that, instead of attaching the temporary fixing plate, the temporary fixing portion 7 that performs the same function as the temporary fixing plate.
2 is a hanging metal fitting 71 by flat pressing with a press device.
It is in the place where it is formed integrally with the.

In this case, the hanging metal fitting 71 is also formed with an elongated through hole 71a having a diameter dimension L larger than the outer diameter dimension D of the anchor bolt 17, and a temporary fixing portion 72.
Is located on the end side of the through hole 71a of the hanging metal fitting 71,
It is formed in a U shape as a whole so as to project inward of the through hole 71a. Then, the inner dimension M of the temporary fixing portion 72
(Left and right width dimensions) is the anchor bolt 17 (male screw part 1
It is configured to be smaller than the outer diameter dimension D of 8) and larger than the root diameter dimension d.

Also in this embodiment, in a state where the upper nut 20 is screwed into a predetermined position of the anchor bolt 17 in advance, the anchor bolt 17 is passed through the wide portion of the through hole 71a where the temporary fixing portion 72 does not exist. The hanging metal fitting 71 is inserted into the lower part from below, and when the hanging metal fitting 71 comes into contact with the lower surface of the upper nut 20, the hanging metal fitting 71 (main body 11) is slid in the direction along the through hole 71a. Then, the temporary fixing portion 72 is inserted into the anchor bolt 17 and exhibits a retaining effect, so that the hanging metal fitting 71 and thus the main body 11 are held in the temporary fixing state by the anchor bolt 17.

Therefore, according to the present embodiment, similarly to the first embodiment and the like, the suspending metal fitting 71 holds the hanging metal fitting 71 to the anchor bolt 17 in a temporarily fixed state, and thereafter supports the main body 11. Since the need for tightening the lower nut 21 to the anchor bolt 17 can be easily carried out, the mounting work can be carried out easily in a short time, and the safety of work in high places is high. It is possible to obtain an excellent effect that the above can be improved.

In this embodiment, the temporary fixing portion 72 is formed integrally with the hanging metal fitting 71 by flat pressing, so that, for example, when the hanging metal fitting 71 is bent by a press machine, it is simultaneously formed. Since the temporary fixing portion 72 can be formed, it does not take much time to form it, and the number of parts can be reduced.

The present invention is not limited to the embodiments described above and shown in the drawings. For example, the temporary fixing plate may be fixed to the upper surface of the hanging metal fitting, or the temporary fixing plate may have a spring property. The present invention can be implemented by appropriately modifying it within a range not departing from the gist, such as being configured from a metal plate included therein.

[0044]

As is apparent from the above description, the ceiling ventilation fan of the present invention has the following excellent effects. That is, according to the ceiling ventilation fan of claim 1, the through hole of the hanging fitting is formed in an elongated hole shape, and is located on the end side of the through hole and is smaller than the outer diameter of the anchor bolt and has a valley. Since the temporary fixing plate having the U-shaped notch having a width dimension larger than the diameter is provided so as to project inward of the through hole,
The hanging metal fitting and thus the main body frame can be held in the anchor bolt in a temporarily fixed state, and as a result, the work of attaching the main body to the anchor bolt on the ceiling ceiling can be easily performed.

In this case, two types of notch portions corresponding to two types of anchor bolts having different outer diameter dimensions are respectively provided at both end sides of the through hole (the ceiling ventilation fan according to claim 2). ) One type of hanging metal fitting can be used for two types of anchor bolts, and parts can be shared. Further, if the inner edge portions of the cutout portion of the temporary fixing plate that face each other are displaced relative to each other in accordance with the screw pitch of the anchor bolt (the ceiling ventilation fan of claim 3),
It will be possible to attach the hanging metal fittings, and thus the main body frame, to the anchor bolts while maintaining the levelness. Further, if the inner edge portion of the cut portion of the temporary fixing plate is bent downward so as to be substantially perpendicular to the inclination angle of the advancing flank of the anchor bolt (the ceiling ventilation fan of claim 4), The inner edge portion of the temporary fixing plate bites into the thread of the anchor bolt with respect to the pulling-out direction of the hanging metal fitting, so that the temporary fixing can be performed more firmly.

According to the ventilation fan for a ceiling of claim 5, the through hole of the hanging fitting is formed in a long hole shape, and the inside dimension of the hanging fitting is located on the end side of the through hole. Since the temporary fixing part that protrudes inward of the through hole so as to be smaller than the outer diameter of the anchor bolt and larger than the root diameter is integrally formed by flat pressing, the hanging metal fitting and thus the main body frame are fixed to the anchor bolt. Can be held in a temporarily fixed state,
As a result, the work of attaching the main body to the anchor bolts on the ceiling can be easily performed, and the number of parts can be reduced.

[Brief description of drawings]

FIG. 1 shows a first embodiment of the present invention, and is a perspective view from the lower side of the hanging metal fitting.

FIG. 2 is a vertical cross-sectional side view of a main part showing a suspension metal fitting being inserted into an anchor bolt (a) and a temporarily fixed state (b).

FIG. 3 is a vertical cross-sectional front view of essential parts showing a state before the hanging metal fitting is inserted into the anchor bolt.

FIG. 4 is a vertical cross-sectional front view of the main part where the hanging metal fitting is temporarily fixed to the anchor bolt.

FIG. 5 is a vertical cross-sectional front view of a main part with a lower nut tightened to an anchor bolt.

FIG. 6 is a vertical sectional front view showing the overall configuration of a ceiling ventilation fan.

FIG. 7 is a plan view of a hanging fitting showing a second embodiment of the present invention.

8 is a vertical sectional front view taken along the line BB of FIG.

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

10 is a vertical cross-sectional front view taken along the line CC of FIG.

FIG. 11 is a view corresponding to FIG. 3 showing a fourth embodiment of the present invention.

FIG. 12 is a view corresponding to FIG. 3 showing a fifth embodiment of the present invention.

FIG. 13 is a vertical sectional front view of a hanging fitting showing a sixth embodiment of the present invention.

FIG. 14 is a view corresponding to FIG. 6 showing a conventional example.

FIG. 15 is a vertical sectional front view of a main part.

[Explanation of reference numerals] In the drawings, 11 is a main body, 12 is a main body frame, 15 is a blower, and 1
7 is an anchor bolt, 18 is a male screw part, 19, 31, 4
1, 51, 61, 71 are hanging metal fittings, 19a, 31a, 4
1a, 51a, 61a, 71a are through holes, 20 is an upper nut, 21 is a lower nut, 22, 32, 42, 52, 6
2 is a temporary stop plate, 22a, 32a, 42a, 52a, 62
Reference numeral a denotes a cut portion, and 72 denotes a temporary fixing portion.

Claims (5)

[Claims] 1. A suspension metal fitting having a through hole is provided in a main body frame having a blower inside, and the suspension metal fitting is inserted into the anchor bolt provided downward on the ceiling through the through hole, By attaching a nut to the anchor bolt to attach to the ceiling part, the through hole of the hanging metal fitting is formed into a long hole shape, and the hanging metal fitting is positioned on the end side of the through hole. A temporary fixing plate having a substantially U-shaped cutout having a width smaller than the outer diameter of the anchor bolt and larger than the root diameter of the anchor bolt, the inner edge of the cutout protruding inward of the through hole. A ventilation fan for the ceiling, which is characterized in that 2. A ceiling according to claim 1, wherein two types of notch portions corresponding to two types of anchor bolts having different outer diameter dimensions are provided at both end sides of the through hole, respectively. Ventilation fan. 3. The ceiling ventilation fan according to claim 1 or 2, wherein the opposing inner edge portions of the cutout portion of the temporary fixing plate are offset from each other in correspondence with the screw pitch of the anchor bolt. 4. The inner edge portion of the cutout portion of the temporary fixing plate is bent downward so as to be substantially perpendicular to the inclination angle of the advancing side flank of the anchor bolt. The ventilation fan for the ceiling described in any of the above. 5. A suspension fitting having a through hole is provided in a main body frame having a blower inside, and the suspension fitting is inserted into the anchor bolt provided downward on the ceiling through the through hole, By attaching a nut to the anchor bolt to attach to the ceiling part, the through hole of the hanging metal fitting is formed into a long hole shape, and the hanging metal fitting is located on the end side of the through hole. And a temporary fixing portion projecting inward of the through hole so that the inner dimension is smaller than the outer diameter of the anchor bolt and larger than the root diameter is integrally formed by flat pressing. A ventilation fan for the ceiling.