JPS6310423Y2 - - Google Patents

Description

[Detailed description of the invention] The present invention relates to a duct ventilation fan that is used by attaching the main body to a duct formed on a wall or ceiling surface, and is designed to securely fix the main body to the duct.

An embodiment of the present invention will be described below based on the drawings.

1 is a ventilation fan for a duct that is used by being installed in a duct 3 that is fitted into a through hole formed in a room wall 2;
It consists of a cylindrical main body 4, a grille 5 attached to the indoor end of the main body, and a plurality of mounting plates 6 for fixing the main body inside the duct 3.

The cylindrical body 4 has a motor 8 mounted at its center by means of a plurality of radial support legs 7.
A mixed flow type blower blade 9 is fixed to the rotating shaft of the motor 8. A trumpet-shaped orifice 10 is integrally formed in an opening at one end of the main body 4 corresponding to the blade 9. A radial rib 11 is provided within the orifice 10, and a screw hole 12 for mounting the grille 5 is bored in the center thereof. Further, a mounting bracket 14 having a screw hole 13 for mounting the grille 5 is welded to the end face of the motor 8 corresponding to the opening at the other end of the main body 4.

A mounting portion 16 is formed at one end of the mounting plate 6 to be engaged with an engagement hole 15 formed in the main body 4. The mounting portion 16 is formed by cutting and raising a part of the mounting plate so as to face each other. An outward bent portion 17 is formed on the other end side of the mounting plate 6, and the bent portion 17 contacts the opening chamber surface of the duct 3 and is fixed to the chamber wall 2 with a screw 18. be done. A mountain-shaped curved portion 19 is formed in the middle of the mounting plate 6 so as to come into elastic contact with the inner surface of the duct 3. The mounting plate 6
is attached in the longitudinal direction of the outer surface of the main body 4.

In the above configuration, when using this ventilation fan for exhaust, the mounting portion 16 is attached to the main body so that the outward bent portion 17 of the mounting plate 6 is located on the orifice 10 side as shown in FIG. After being locked in the engagement hole 15, the main body 4 is inserted into the duct 3, and the outwardly bent portion 17 of the mounting plate is fixed to the chamber wall 2 with screws 18. Next, insert the decorative screw 20 from the center of the grill 5.
, and screw the tip into the screw hole 12 on the main body side to fix this grille, and tighten the peripheral edge 21 of the grille.
This covers the outer bent portion 17 of each mounting plate.

When using this ventilation fan for intake, as shown in FIG. After the main body 4 is locked into the engagement hole 15 of the main body, the main body 4 is inserted into the duct 3, and the outwardly bent portion 17 of the mounting plate is fixed to the chamber wall 2 with screws 18. Next, insert the decorative screw 20 from the center of the grill 5.
into the screw hole 13 of the mounting bracket 14.
The grille is fixed by screwing into the grille, and the outer bent portion 17 of each mounting plate is covered by the peripheral edge 21 of the grille.

When the above-mentioned ventilation fan is attached, when the decorative screw 20 is screwed in, the peripheral edge 21 of the grille 5 is screwed in.
is in contact with the chamber wall 2, so that the main body 4
A force acts to pull the object into the room. This force acts on the mounting plate 6 via the mounting portion 16, and since the outward bent portion 17 of the mounting plate is fixed to the chamber wall 2, the force that tends to compress the mounting plate 6 from both ends becomes. Therefore, the mounting plate 6 is deflected by the force, and the elastic contact force of the mountain-shaped curved portion 19 to the inner surface of the duct becomes stronger, so that the main body 4 is mounted in the duct 3 without wobbling.

As described above, the present invention includes a cylindrical body that houses a blower and is inserted into a duct, a grill that is attached to the opening end of the body on the indoor side, and a mounting plate that is attached to the longitudinal direction of the outer peripheral surface of the body. The mounting plate has a mounting portion to the main body on one end side, an outwardly bent portion fixed to the chamber surface of the duct opening on the other end side, and a mountain-shaped curved portion in the middle that elastically contacts the inner surface of the duct. By attaching the grille to the main body, a force is applied to pull the main body forward, and this force acts to compress the mounting plate from both ends, causing the middle of the mounting plate to bend. This has great practical effects, such as the elastic contact force of the mountain-shaped curved portion becoming stronger and the main body being more securely attached.

[Brief explanation of the drawing]

FIG. 1 is a longitudinal side view of a ventilation fan used for exhaust, FIG. 2 is a longitudinal side view of a ventilation fan used for intake, and FIG. 3 is a sectional view of a mounting plate. 3...Duct, 4...Main body, 5...Grill, 6
...Mounting plate, 16...Mounting portion, 17...Outward bending portion, 19...Mountain curved portion.

Claims (1)

[Scope of utility model registration request] A cylindrical body with a built-in blower inserted into the duct, a grill whose peripheral edge touches the room surface of the duct opening and is attached with a screw screwed into the body, and a It consists of a mounting plate to be installed, and the mounting plate has a mounting part to the main body on one end.
A ventilation fan for a duct, which has an outwardly bent part fixed to the room surface of the duct opening at the other end, and a mountain-shaped curved part in elastic contact with the inner surface of the duct in the middle.