JPH07229642A - Ventilating fan for ceiling - Google Patents

Abstract

PURPOSE:To easily and safely mount a body case at an anchor bolt of a rear of a ceiling. CONSTITUTION:A hanger fitting 20 or a body case is engaged with an anchor bolt 12, and a temporarily fixing fitting 24 provided in an oblique state and fixed at its one end 24a is engaged with them. Thus, the fitting 24 is locked to threads 27 of the bolt 12 at a temporarily fixed hole edge 25a at the other end (free end) 24b side in the oblique state, and the case is temporarily fixed to the bolt 12. Accordingly, thereafter, an operator can exclusively clamp a nut 28 even without supporting the case by his one hand.

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 which is used by attaching a main body case to an anchor bolt on the back of a ceiling.

[0002]

2. Description of the Related Art Conventionally, as shown in FIGS. 19 and 20, in a ceiling ventilation fan, a nut 3 is screwed onto an anchor bolt 2 vertically provided on the back side of the ceiling 1, that is, on the back side of the ceiling, and then the In the part below the nut 3 of the anchor bolt 2,
The hanging metal fitting 5 attached to the upper surface of the main body case 4 is fitted and inserted through the through hole 6, and the nut 7 is screwed into the anchor bolt 2 from below, so that the hanging metal fitting 5 is connected to the nut 3. The main body case 4 is attached to the anchor bolt 2 by tightening.

[0003]

However, in the above-mentioned prior art, at the stage of inserting the hanging metal fitting 5 into the anchor bolt 2, the hanging metal fitting 5 may come out of the anchor bolt 2 and the main body case 4 may drop. Therefore, it is difficult to support the main body case 4 with one hand while screwing and tightening the nut 7 with the remaining one hand.
Further, since the folding and the work are performed at a high place, and the difficult work is performed at this high place, there is a risk that the worker himself / herself may fall.

The present invention has been made in view of the above circumstances, and therefore an object thereof is to provide a ceiling ventilation fan which can easily and safely attach a main body case to an anchor bolt.

[0005]

In order to achieve the above object, in the ceiling ventilation fan of the present invention, the main body case is
An anchor bolt is attached to the anchor bolt by inserting the through hole of the hanging metal fitting provided therein into an anchor bolt vertically installed on the ceiling and tightening the nut. A plate-like temporary fixing metal fitting having a temporary fixing hole to be inserted into is provided in an inclined state in which one end is fixed and the other end is free and is positioned above the one end, and the other end side temporary fixing hole edge Is locked to the thread of the anchor bolt before the nut is tightened.

In this case, the main body case is to be attached to the anchor bolt by inserting the through hole formed in the main body case into an anchor bolt vertically provided on the ceiling and tightening the nut. In the same manner as described above, a plate-like temporary fixing metal fitting having a temporary fixing hole to be inserted into the anchor bolt is provided in the through-hole portion of 1 in an inclined state in which one end is fixed and the other end is free and is located above the one end. ,
In addition, the edge of the temporary fixing hole on the end side may be engaged with the thread of the anchor bolt before the nut is tightened.

Further, it is preferable that the temporary fixing metal fitting is provided so that the other end thereof is located on the side opposite to the main body case side, and the operation of releasing the locking by the screw thread of the anchor bolt by reducing the inclination angle of the temporary fixing metal fitting. It is preferable to provide a holding means for holding the state. Further, the inclination angle of the temporary fixing metal fitting should be determined so as to be almost at right angles to the upper slope of the screw thread of the anchor bolt, and the edge of the temporary fixing metal fitting on the other end side of the temporary fixing metal fitting should be fixed to the anchor bolt. It is good to have an angle corresponding to the lead angle.

A second temporary fixing portion to be engaged with another thread of the anchor bolt may be provided on the other end portion side of the temporary fixing metal fitting, and the other end portion side of the temporary fixing metal fitting may be provided on the other end side thereof. The folded extension portion having the second temporary fixing hole fitted into the anchor bolt is provided in an inclined state in which the other end portion is located higher than the one end portion, and the second temporary fixing hole edge portion on the other end side is It is recommended to be locked to the other thread of the anchor bolt.

[0009]

According to the above means, when the suspending metal fitting or the main body case is inserted into the anchor bolt and the temporary fixing metal fitting is inserted, the temporary fixing metal fitting is inclined and the other end (free end) is The edge of the temporary fixing hole on the side is locked to the thread of the anchor bolt to temporarily fix the main body case to the anchor bolt. Therefore, after that, the operator can tighten the nut without supporting the main body case.

Further, in this case, if the temporary fixing metal fitting is provided so that the other end portion is located on the side opposite to the main body case, the operation of releasing the locking of the temporary fixing metal fitting by the thread of the anchor bolt can be facilitated. However, in the case where the holding means for holding the temporary fixing metal fitting in the operation state for releasing the locking of the screw thread of the anchor bolt by reducing the inclination angle is used, when the holding operation state is held, It is not necessary for a person to keep holding the device by hand, and workability can be further improved.

On the other hand, in the case where the inclination angle of the temporary fixing metal fitting is set to be substantially at right angles to the upper slope of the screw thread of the anchor bolt, the temporary fixing metal fitting is more reliably locked by the screw thread of the anchor bolt. Even if the edge of the temporary fixing hole on the other end side of the temporary fixing bracket is angled by the lead angle of the anchor bolt, locking of the temporary fixing bracket by the thread of the anchor bolt is more reliable. Can be done.

Further, even if the second temporary fixing portion to be engaged with the other screw thread of the anchor bolt is provided on the other end side of the temporary fixing metal fitting, the engagement of the temporary fixing metal fitting by the screw thread of the anchor bolt is provided. Can be more reliably stopped, and a folded back extension portion having a second temporary fixing hole to be inserted into the anchor bolt is provided on the other end portion side of the temporary fixing metal fitting, and the other end portion is positioned above one end portion. Even if the second temporary fixing hole edge on the other end side is locked to the other thread of the anchor bolt, the temporary fixing metal fitting is locked by the thread of the anchor bolt. Can be performed more reliably.

[0013]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A first embodiment of the present invention will be described below with reference to FIGS. First, in Figure 2, the ceiling 1 of the house
1 is shown, and in this case, two anchor bolts 12 are hung from a concrete structure 13 of the house, for example, on the back side, that is, the ceiling.

On the other hand, the main body case 14 of the ceiling ventilation fan is a rectangular box and incorporates a centrifugal fan 15 and a blower 17 composed of a motor 16 for rotationally driving the fan 15. Further, the main body case 14 is provided with a connecting cylinder 19 for connecting the exhaust duct 18 on its side surface, and hanging fittings 20 are attached to both left and right ends of the upper surface.

As shown in detail in FIG. 3, the hanging fitting 20 has a lightning stepped shape, and a mounting hole 21 is formed in the lower step portion 20a. The upper step portion 20b is located outside the main body case 14 by being screwed and fixed to the main body case 14 through the screw 22 shown in FIG. Further, a circular through hole 23 having a diameter larger than that of the anchor bolt 12 is formed in the upper step portion 20b of the hanging metal fitting 20, and a temporary fixing metal fitting 24 is attached.

The temporary fixing member 24 is made of a metal plate such as a spring steel plate, and has one end portion 24a which is flat and the other end portion 24b which is located above the inclined shape.
In this inclined portion, a temporary fixing hole 25 is formed which is laterally long and has a long hole shape (see FIG. 3) which is larger than the anchor bolt 12 in both the short diameter and the long diameter. And this temporary fixing metal fitting 24
Has one end 24a positioned outside the through hole 23 of the upper step 20b of the hanging fitting 20 and fixed by welding or the like, and the other end 24b is free on the main body case 14 side.

Now, in the case of the above-mentioned configuration,
When attaching the main body case 14 to the anchor bolt 12, first, the nut 26 shown in FIG. 4 is screwed onto the anchor bolt 12 and advanced to a predetermined attachment position.

Next, the temporary fixing fitting 24 and the hanging fitting 20 are fitted into the anchor bolt 12 through the temporary fixing hole 25 and the through hole 23, respectively, and the main body case 14 is pushed up.
Then, in the temporary fixing metal fitting 24, when the temporary fixing hole edge portion 25a on the other end portion 24b side hits one screw thread 27 of the anchor bolt 12, the inclined surface 27a below the screw thread 12a.
1 and is pushed down as shown by the chain double-dashed line in FIG. 1, the edge portion 25a of the temporary fixing hole on the side of the other end portion 24b passes over the screw thread 27 and hits the next screw thread 27 to contact the screw thread 27. It is repeated that the lower slope 27a of the mountain 12a is again pressed relatively. Thus, the temporary fixing metal fitting 24 successively advances beyond the thread 27 of the anchor bolt 12.

Then, the other end 24b of the temporary fixing member 24
Is pushed to the bottom surface of the nut 26, the pushing up of the main body case 14 is stopped. At this time, even if the hand is removed from the main body case 14, the temporary fixing metal fitting 24 is still attached to the other end portion 2.
The temporary fixing hole edge portion 25a on the 4b side is hooked on the screw thread 27 of the anchor bolt 12 so as not to drop and thus the main body case 14 is temporarily fixed to the anchor bolt 12. After this, as shown in FIG. 5, the anchor bolt 1
A nut 28 is screwed onto the screw 2, and the nut 28 is advanced to tighten the hanging metal fitting 20 between the nut 26 and the main body case 14 to the anchor bolt 12. In this case, the operator need not support the main body case 14,
It suffices to perform only screw tightening of the nut 28. When the suspension fitting 20 is tightened with the nut 28 and the nut 26, the temporary fixing fitting 24 is also tightened to be in a horizontal state as shown by a chain double-dashed line in FIG.

As described above, in this structure, since the main body case 14 can be temporarily fixed to the anchor bolts 12 by the temporary fixing metal fitting 24, the worker does not need to support the main body case 14, but the nut 28 can be screwed and tightened. It can be done, while supporting the main body case with one conventional hand,
It is not necessary to perform a difficult work such as tightening the nut with the remaining one hand, and the anchor bolt 12
The body case 14 can be easily attached to the. Further, in this case, although the work is still performed at a high place, the work can be performed safely without the risk of the worker dropping due to the ease of the work.

In contrast to the above, FIGS. 6 and 7 show a second embodiment of the present invention, in which one end 24a of the temporary fixing metal fitting 24 is provided.
Is provided so that the other end 24b is located on the side opposite to the main body case 14 by locating and fixing the portion inside the through hole 23 of the upper step portion 20b of the hanging metal fitting 20 (on the main body case 14 side). By doing so, the operation of releasing the locking of the temporary fixing metal fitting 24 by the screw thread 27 of the anchor bolt 12 can be facilitated by doing so.

The operation of releasing the locking of the temporary fixing metal fitting 24 by the screw thread 27 of the anchor bolt 12 is performed when the temporary fixing metal fitting 24 and the hanging metal fitting 20 are excessively inserted into the anchor bolt 12, or when the main body case 14 is inserted. If you have installed different ones (misplaced), as shown in Fig. 7,
The temporary fixing metal fitting 24 is sandwiched by the fingers 29 together with the hanging metal fitting 20, and the temporary fixing metal fitting 24 is pushed down to reduce the inclination angle thereof. In the case of the second embodiment, the operation is not performed. This can be easily done in a wide area on the side of the main body case 14.

FIG. 8 shows a third embodiment of the present invention.
As a holding means for holding the temporary fixing metal 24 in the operating state when the temporary fixing metal 24 is in the operation state in which the inclination angle is reduced as described above and the locking by the screw thread 27 of the anchor bolt 12 is released. The engaging portion 30 that elastically engages with the tip of the hanging metal fitting 20 is formed on the tip of the temporary fixing metal fitting 24 by extension bending. By doing so, the temporary fixing metal fitting 24 is When holding the unlocking operation state, it is not necessary for the operator to continue holding by hand.

FIG. 9 shows a fourth embodiment of the present invention.
It shows that the inclination angle θ of the temporary fixing metal fitting 24 is set to be substantially perpendicular to the upper slope 27b of the thread 27 of the anchor bolt 12, and by doing so, the thread of the anchor bolt 12 is The fitting of the temporary fixing metal fitting 24 to the anchor bolt 27 can be improved, and the temporary fixing metal fitting 24 can be more reliably locked by the thread 27 of the anchor bolt 12, and by extension, the temporary fixing of the main body case 14 to the anchor bolt 12 can be performed. Can be achieved more reliably.

FIG. 10 shows a fifth embodiment of the present invention, in which the edge 2 of the temporary fixing hole on the other end 24b side of the temporary fixing metal fitting 24 is provided.
5a shows an anchor bolt 12 having an angle corresponding to the lead angle α. Even in this case, the temporary fixing metal fitting 24 can be well fitted to the thread 27 of the anchor bolt 12, so that the anchor bolt 12 Screw thread 27
The temporary fixing fitting 24 can be locked by the above, and the main body case 14 can be temporarily fixed to the anchor bolt 12 more reliably.

FIG. 11 shows a sixth embodiment of the present invention. The second temporary fixing portion 31 is locked to the other thread 27 of the anchor bolt 12 on the other end 24b side of the temporary fixing metal fitting 24.
Is formed by extending and bending the temporary fixing metal fitting 24. By doing so, the temporary fixing metal fitting 24 is locked by the screw threads 27 of the anchor bolt 12 at two locations. It can be done more reliably. In addition, the second temporary fixing portion 31 is provided with the nut 28.
As shown by the chain double-dashed line, when the nut is fastened, the nut 28 is provided so as not to be caught by the nut 28, thereby avoiding the crushing of the second temporary fixing portion 31.

In this case, as in the seventh embodiment shown in FIG. 12, another plate 32 is fixed to the other end portion 24b side of the temporary fixing metal fitting 24 by, for example, welding so that the second temporary fixing portion 31 and You may make it form the 2nd temporary fixing | fixed part 33 which functions similarly.

FIGS. 13 and 14 show an eighth embodiment of the present invention, which is a folded-back extension having a second temporary fixing hole 34 fitted into the anchor bolt 12 on the other end 24b side of the temporary fixing metal fitting 24. The part 35, and the other end 35b has one end 3
5a, which is provided in an inclined state above the other end 3
The second temporary fixing hole edge portion 34a on the 5a side is the anchor bolt 1
2 is shown to be locked to the other screw thread 27 of FIG. 2, and even in this case, the temporary fixing metal fitting 24 is locked by the screw thread 27 of the anchor bolt 12 at two places. It can be done more reliably.

15 and 16 show a ninth embodiment of the present invention. Through holes 36 are formed at both left and right ends of the upper surface of the body case 14, and the body case 14 is anchored by the through holes 36. In the case where it is attached to the anchor bolt 12 by fitting it into the bolt 12 and tightening the nut 28, the through hole 36 of the body case 14 thereof is used.
The one in which the temporary fixing fitting 24 is provided in the portion is shown, and even in this case, the same effect as the above can be obtained. Also in this case, the temporary fixing metal fittings 24 can be devised in the same manner as in the second to eighth embodiments to obtain further advantageous effects.

FIGS. 17 and 18 show a tenth embodiment of the present invention, in which step portions 37 are formed on opposite side ridges of the main body case 14 and through holes 38 are formed in both step portions 37. Then, the body case 14 is fitted into the anchor bolt 12 by the through hole 38, and the nut 28 is tightened to be attached to the anchor bolt 12. It shows the one provided with the fixing metal fitting 24, and even in this case, the same effect as the above can be obtained. Also in this case, the temporary fixing metal fittings 24 can be devised in the same manner as in the second to eighth embodiments to obtain further advantageous effects.

In addition, the present invention is not limited to the embodiments described above and shown in the drawings, but may be implemented with appropriate modifications without departing from the scope of the invention.

[0032]

The ceiling ventilation fan of the present invention is as described above, and has the following effects. Firstly, the main body case having a blower inside is fitted into the anchor bolt that is provided vertically in the ceiling bolt through the through hole of the hanging metal fitting provided therein, and the nut is tightened to be attached to the anchor bolt. In the above-mentioned thing, a plate-like temporary fixing metal fitting having a temporary fixing hole to be inserted into the anchor bolt is fixed to the hanging fitting in an inclined state in which one end is fixed and the other end is free and is located above the one end. Since the edge of the temporary fixing hole on the other end side is engaged with the thread of the anchor bolt before the nut is tightened, the nut is tightened without supporting the main body case. Therefore, the main body case can be attached easily and safely.

Secondly, a main body case having a blower inside is attached to the anchor bolt by inserting a through hole formed in the main body case into an anchor bolt hung vertically above the ceiling and tightening the nut. In the above, in the through hole portion of the main body case, a plate-like temporary fixing metal fitting having a temporary fixing hole to be inserted into the anchor bolt is fixed at one end, and the other end is free and is inclined above the one end. In this state, the edge of the temporary fixing hole on the other end side is locked to the thread of the anchor bolt before the nut is tightened. Since the nut can be tightened, the main body case can be easily and safely attached.

Thirdly, by providing the above-mentioned temporary fixing metal fitting so that the other end portion is located on the side opposite to the main body case side, it becomes easy to release the locking of the temporary fixing metal fitting due to the thread of the anchor bolt. be able to. Fourthly, in the case of retaining the unlocking operation state by providing the holding means for holding the temporary fixing metal fitting in the operation state for releasing the locking of the thread of the anchor bolt by reducing the inclination angle thereof. In addition, it is not necessary for the worker to keep holding it by hand, and the workability can be further improved.

Fifthly, by determining the inclination angle of the temporary fixing metal fitting so as to be almost at right angles to the upper slope of the screw thread of the anchor bolt, the locking of the temporary fixing metal fitting by the screw thread of the anchor bolt can be further improved. It can be done reliably. Sixth, by providing an angle corresponding to the lead angle of the anchor bolt at the edge of the temporary fixing hole on the other end side of the temporary fixing fitting,
Similar to the above, the temporary fixing fitting can be locked more reliably by the thread of the anchor bolt.

Seventh, by providing a second temporary fixing portion which is engaged with another screw thread of the anchor bolt on the other end side of the temporary fixing metal fitting, the screw thread of the anchor bolt is used as described above. The temporary fixing fitting can be locked more reliably. Eighth, a fold-back extension having a second temporary fixing hole to be inserted into the anchor bolt is provided on the other end of the temporary fixing member in a tilted state in which the other end is located above one end. Since the edge of the second temporary fixing hole on the other end side is locked to the other thread of the anchor bolt, the locking of the temporary fixing metal fitting by the thread of the anchor bolt is more reliable, as described above. Can be done

[Brief description of drawings]

FIG. 1 is a longitudinal sectional view showing a first embodiment of the present invention in a state where a main part is being attached.

FIG. 2 is a vertical cross-sectional view of the entire mounting completed state

FIG. 3 is a perspective view of the hanging metal fitting and the temporary fixing metal fitting.

FIG. 4 is a vertical cross-sectional view of a main part in an exploded state.

FIG. 5 is a vertical cross-sectional view of the main part immediately before the completion of mounting.

FIG. 6 is a diagram corresponding to FIG. 3 showing a second embodiment of the present invention.

FIG. 7 is a diagram corresponding to FIG.

FIG. 8 is a view corresponding to FIG. 7 showing a third embodiment of the present invention.

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

FIG. 10 is a perspective view of a fifth embodiment of the present invention, which is equivalent to the portion shown in FIG.

FIG. 11 is a view corresponding to FIG. 7 showing a sixth embodiment of the present invention.

FIG. 12 is a partial equivalent view of FIG. 11 showing a seventh embodiment of the present invention.

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

FIG. 14 is a perspective view corresponding to FIG.

FIG. 15 is a cutaway front view of a body case showing a ninth embodiment of the present invention.

FIG. 16 is a perspective view of the main body case.

FIG. 17 is a view corresponding to FIG. 15 showing a tenth embodiment of the present invention.

FIG. 18 is a view corresponding to FIG. 16.

FIG. 19 is a view corresponding to FIG. 2 showing a conventional example.

FIG. 20 is a vertical cross-sectional view of the main part in a state where the attachment is completed.

[Explanation of symbols]

11 is a ceiling, 12 is an anchor bolt, 14 is a main body case, 17 is a blower, 20 is a hanging fitting, 23 is a through hole, 2
4 is a temporary fixing metal fitting, 24a is one end, 24b is the other end, 2
5 is a temporary fixing hole, 25a is a temporary fixing hole edge portion, 27 is a screw thread,
27b is an upper slope, 28 is a nut, 30 is an engaging portion (holding means), 31 and 33 are second temporary fixing portions, 34 is a second temporary fixing hole, 34a is a second temporary fixing hole edge portion, Reference numeral 35 is a folded extension portion, 35a is one end portion, 35b is the other end portion, and 36 and 38 are through holes.

Claims (8)

[Claims] 1. A main body case having a blower inside is attached to an anchor bolt by inserting a through hole of a hanging metal fitting provided therein into an anchor bolt hung vertically on the ceiling and tightening the nut. A plate-like temporary fixing metal fitting having a temporary fixing hole to be inserted into the anchor bolt, the one end is fixed, and the other end is free and is positioned above the one end. And a temporary fixing hole edge portion on the other end side is engaged with a thread of the anchor bolt before the nut is tightened. 2. A main body case having a blower inside, wherein a through hole formed in the main body case is fitted into an anchor bolt hung vertically from the ceiling and is tightened with a nut to be attached to the anchor bolt. A plate-like temporary fixing metal fitting having a temporary fixing hole to be inserted into the anchor bolt is attached to the through hole portion of the main body case in an inclined state in which one end is fixed and the other end is free and is located above the one end. A ventilation fan for a ceiling, characterized in that the edge of the temporary fixing hole on the other end side is engaged with the thread of the anchor bolt before the nut is tightened. 3. The temporary fixing metal fitting is provided so that the other end thereof is located on the side opposite to the main body case.
Ventilation fan for the ceiling described. 4. The holding means for holding the temporary fixing metal fitting in a state in which the inclination angle of the temporary fixing metal fitting is reduced to release the locking by the screw thread of the anchor bolt.
The ventilation fan for ceiling according to any one of 1 to 3. 5. The ceiling ventilation fan according to claim 1, wherein the inclination angle of the temporary fixing metal fitting is set to be substantially at right angles to the upper slope of the thread of the anchor bolt. 6. The ceiling ventilation fan according to claim 1, wherein an angle corresponding to a lead angle of the anchor bolt is provided at an edge portion of the temporary fixing hole on the other end side of the temporary fixing metal fitting. 7. The ceiling ventilation fan according to claim 1 or 2, wherein a second temporary fixing portion that is engaged with another thread of the anchor bolt is provided on the other end side of the temporary fixing metal fitting. . 8. A fold-back extension portion having a second temporary fixing hole to be inserted into an anchor bolt is provided on the other end side of the temporary fixing metal fitting in an inclined state in which the other end portion is located above the one end portion. 3. The ceiling ventilation fan according to claim 1 or 2, wherein the edge of the second temporary fixing hole on the other end side is engaged with another thread of the anchor bolt.