JPS59197745A - Ventilating fan for duct - Google Patents

Abstract

PURPOSE:To provide a ventilating fan for duct with good working properties by a method wherein the fan can be assembled and disassembled from the inside of a room for inspection, repair or the like. CONSTITUTION:Nuts 17 are screwed off from through bolts 8, which are inserted through the through holes of a casing 20 in an outer case 13, by the operation from the inside of a room under the condition that the screws 14a of flanges 14 have been removed together with a decorative grille in advance. Consequently, the release from the fixation of the outer case 13 to a mounting member 5 is made possible. The through bolts 8 are drawn out through the hole parts 16a of supporting pieces 6 with holes 16 and through holes 15 by lowering a main body 12, resulting in taking the main body 12 out of an opening 12a to the indoor side.

Description

DETAILED DESCRIPTION OF THE INVENTION [Technical Field of the Invention] The present invention relates to a duct ventilation fan installed in the ceiling, and more particularly to a duct ventilation fan with an improved mounting structure.

[Technical background of the invention]

Generally, in a duct ventilation fan, the main body has a blower inside, and a flange is formed at the opening on the lower surface, and the fan is inserted into the attic space through an opening provided in a ceiling board. In this state, the upper surface of the main body is attached to a hanging bolt embedded in the ceiling wall, while the flange is fixed to the periphery of the opening in the ceiling plate. Further, a joint cylinder is attached to one side of the main body and communicates with a vent hole formed in the main body, and the joint cylinder is connected to the duct in a fitted state.

[Problems with background technology]

By the way, in order to remove the main body for inspection and repair, it is necessary to remove the main body from the hanging bolts and disconnect the joint cylinder from the duct, but the opening in the ceiling plate is closed by the main body and its flange. Because of its location, the main unit must be removed from inside the room by climbing up into the narrow attic space, which has the disadvantage of poor design quality.

[Purpose of the invention]

SUMMARY OF THE INVENTION Therefore, an object of the present invention is to provide a duct ventilation fan that can be attached and detached from the indoor side and has good workability during inspection and repair.

[Summary of the invention]

The present invention provides l'l'l, which is fixed to the ceiling wall! l) A mounting member that is attached to the tool and has a vertical plate portion and a joint cylinder is provided on the vertical plate portion, a screw punch that is provided in a hanging state on this mounting member, and this screw punch is inserted into the inside. The main body is fastened to the screw punch with a nut and has a vent hole on one side that communicates with the joint cylinder.

EXAMPLE A first example of the present invention will be described below with reference to FIGS. 1 and 2. 1 is a field edge arranged in a grid pattern; 2 is a ceiling plate attached to the field edge 1; a rectangular opening 2a is formed in this ceiling plate 2, corresponding to one section of the field edge 1; . Reference numerals 3 and 3 denote a pair of hanging bolts, which are hanging tools, and are attached to the ceiling wall 4 in correspondence with the opening 2a. 5 is a horizontal plate portion 5a
This is a mounting member that is formed by bending a vertical plate part 5b at one end and is located in the ceiling, and has holed ears 6, 6 formed on both sides of the horizontal plate part 5a. Hanging parts 6, 6, Siport 5,
5 with respective nuts, and threaded through bolts 8, which are threaded punches, are provided in a hanging state on the lower surface of the three corners of the horizontal plate portion 5a. Further, a communication port 9 is formed in the vertical plate portion 5b of the mounting member 5, and this communication port 9 is communicated with a duct 11 through a joint cylinder 10 fixed to the vertical plate portion 5b. Reference numeral 12 denotes a main body that is inserted into the attic through an opening 2a of the ceiling plate 2, and its outer case 13 has a rectangular box shape with an opening at the bottom. In addition to forming an extending flange 14, a corner portion of the upper surface has a through hole 15 through which the through bolt 8 is inserted (see FIG. 2).
A supporting piece 16 with a hole is attached to the inner side of the corner of the lower surface corresponding to the through hole 15 of the outer case 13.
The lower end of a through bolt 8 inserted into the outer case 16 passes through the hole 16a, and by screwing a nut 17 onto the through bolt 8, the outer case 13 and the main body 12 can be mounted horizontally on the mounting member 5. It is fastened and fixed to the plate portion 5a.

Note that the flange 14 of the outer case 13 is attached to the peripheral edge of the opening 3 by screws 14a), and when the main body 12 is fixed, a vent hole 18 formed on one side of the outer case 13 is attached.
matches the communication port 9 of the vertical plate portion 51:1 and communicates with the joint cylinder body 10.

19 is a blower installed in the outer case 20. Consisting of a fan 21 and an electric motor 22, the casing 20 is fixed to the outer case 13 with its exhaust port 20a communicating with the vent 18 and the intake port 2Q'b on the lower surface directed downward. The rotating shaft 23 of the electric motor 22 is attached to the lower surface of the motor 20
1) into which a fan 21 is fitted.

Note that 24 is a decorative grill provided so as to cover the lower opening of the outer case 16.

Next, a procedure for removing the main body 12 for inspection and repair after attaching the main body 12 will be explained. In this case, the screws 14a of the 7 flange 14 are removed together with the decorative grille 24, and in this state, the through bolt 8' inserted into the outer case 13 through the through hole 15 is operated from the indoor side. Escape TsuFi7. As a result, the outer case 15 is also unfixed to the mounting member 5, so the main body 1-2
When the bolt 8 is lowered, the through bolt 8 is pulled out from the hole 16a of the holed support piece 16 and the through hole 15, and the main body 12 is inserted into the opening 12a.
If you take it out indoors, you will see a crack.

Furthermore, when installing the main body 12 after inspection and repair, the procedure may be reversed to that described above.

According to the above structure, the main body 12 is attached to the attachment member 5 using a nut 17 that can be attached and detached from the indoor side, and the joint cylinder 9 is attached to the vertical plate portion 5b of the attachment member 5. Therefore, when inspecting or repairing,
The main body must be removed from the hanging port.The connection between the joint cylinder and the duct must be removed.Unlike conventional methods, the main body 12 can be attached to the mounting member 5 by operation from inside the room without climbing up to the ceiling. It can be attached and detached with ease, improving workability.

Next, FIGS. 3 and 4 show a second embodiment of the present invention,
In this second embodiment, the same parts as in FIGS. 1 and 2 are given the same reference numerals, and only the different parts will be described. The mounting member 25 of this second embodiment consists of a rectangular frame 26 and a vertical plate part 27 erected on one side of the frame 26, and hanging bolts 3 are provided on two opposing sides of the frame 26. Ears with holes 28 attached to
A triangular support portion 30 is provided inside the triangular corner portion of the frame body 26 and has a threaded rod 29 which is a screw rod 29 directed downward and protrudes in a hanging state. Further, the vertical plate portion 27 has a communication port 3 that communicates with the duct 11 via the joint cylinder 1o.
1 is formed, and a cross-sectional path ■ is located at the upper end.
A letter-shaped engagement piece portion 32 is provided.

On the other hand, the triangular corner portions of the outer case 33 of the main body 12 are supported by support portions 30.
A chamfered portion 34 extending halfway from the upper end to the lower end corresponds to
A through hole 36 corresponding to the threaded rod 29 is provided in the lower step portion 35 thereof. Further, an angle member 37 having a cross-section shaped like a letter is provided along one edge of the upper surface of the outer case 63 in correspondence with the engagement piece portion 32 of the vertical plate portion 27 .

Therefore, during installation, the main body 12 is attached to the frame 2 of the installation member 25.
6 and the threaded rod 29 of the support part 30 is inserted into the lower end step part 35.
It is inserted into the outer case 36 through the through hole 36. Then, a wing nut 38 is screwed onto the lower end of the inserted threaded rod 29 from the indoor side, whereby the lower end stepped portion 35 of the outer case 53 is brought into contact with the support portion 30 of the mounting member 25 and is tightened and fixed. . In this case, the angle member 37 is connected to the V-shaped engagement piece 32.
Since the vertical plate portion 27 is pressed into contact with one side of the outer case 33, good airtightness can be obtained between the vertical plate portion 27 and the outer case 33.

Even with this configuration, the same effects as in the first embodiment can be obtained, and in addition, when the main body 12 is attached, the main body 1 relative to the frame 26 is
2, the main body 1 is inserted along the oblique side of the support part 30.
Since the chamfered portion 24 of No. 2 is guided in a sliding manner,
The effect that the main body 12 is guided and positioned is achieved by automatically inserting the threaded rod 29 into the through hole 36 of the lower end step portion 35.

〔Effect of the invention〕

As described above, the present invention provides a mounting member having a side portion: C vertical plate portion and provided with a joint cylinder connected to a duct on the vertical plate portion; The main body is fixed to the mounting member by inserting the screw punch into the main body and screwing a nut onto the screw punch, so that the main body can be fixed to the mounting member during inspection and repair. To provide a duct ventilation fan with good workability, whose main body can be attached and detached by operation from inside the room without climbing up to the ceiling.

[Brief explanation of the drawing]

1 and 2 show a first embodiment of the present invention, FIG. 1 is an overall longitudinal sectional view, and FIG. 2 is an exploded perspective view of main parts.
6 and 4 respectively show a second embodiment of the present invention.
2 and a diagram equivalent to FIG. 2. In the figure, 2 is a ceiling board, 2-a is an opening, 6 is an IB' bolt (hanging tool), 4 is a ceiling wall, 5 is a mounting member, 5b is a vertical plate, and 8 is a through bolt (screwed punch). ), 1o is the joint cylinder, 11 is the duct, 12 is the main body, 18 is the vent, 19 is the blower, 2
5 is a mounting member, 27 is a vertical plate part, 29 is a threaded rod (screw pestle),
3o is a support part, 34 is a chamfered part, 35 is a lower end step part, 3
8 is a butterfly nut. Applicant Tokyo Shibaura Electric Co., Ltd.] 1 Figure 2 Figure 3 Figure 4

Claims (1)

[Claims] 1. A device that is inserted into an opening provided in a ceiling plate, which is attached to a hanging fixture fixed to a ceiling wall, and has a vertical plate portion on one side. A mounting member is provided with a joint cylindrical body connected to the duct on the vertical plate portion, and a screw screw is provided in a hanging state on the mounting member. A ventilation fan for a duct comprising a main body which is attached and fixed and has a blower inside and a vent communicating with the joint cylindrical body on one side. 2. The mounting member is formed into a rectangular frame shape into which the main body is inserted, and has a support part with a screw punch inside the corner part, while the corner part of the main body has a chamfer extending halfway from the upper end to the middle of the lower end. Claim 1, characterized in that a chamfered corner is formed, and the lower end step of the chamfered corner is brought into contact with the support part and fixed by tightening with a nut. Ventilation fan for duct.