JPH0240436A - Recessed-in-ceiling type ventilator - Google Patents

Abstract

PURPOSE:To prevent lamp black from entering and to provide ease of assembling work by forming a reinforcing plate into an L shape fittable to a corner part and protruded claws on the reinforcing plate so as to allow it to be inspected to a fitting flange, and pressing the inserted part so that the thickness of the inserted part becomes equal to the total thickness of the claw and the flange. CONSTITUTION:A reinforcement plate 4 is formed into an L shape fittable to the corner of a fitting flange 3, and protruded claws 5 are provided on the reinforcement plate 4 so that it can be inserted to each of the corners of the fitting flange 3 from the extending direction of the flange 3. The flat part 5a of the protruded claw 5 is raised to form an opening 6 having nearly the same space as the thickness of the flange 3. By this constitution, the reinforcement plate 4 is inserted to the fitting flange 3 through the openings 6 from the extending direction of the flange 3, and the inserted part is pressed so that its thickness becomes nearly equal to the total thickness of the protruded claw 5 and the flange 3. By this constitution, lamp black is prevented from entering and ease of assembling work is provided.

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial Field of Application] The present invention relates to a ceiling-embedded ventilation fan that is installed embedded in the ceiling.

[Prior Art] This type of ventilation fan has a ventilation blower built into a rectangular main body casing with an opening at the bottom, sucks indoor air through an opening facing the ceiling, and exhausts it outside. ing. At the edge of the opening of the main body casing, a mounting flange is bent outward so as to be brought into contact with a ceiling edge or the like, or to be directly fastened with screws. The mounting flange itself is discontinuously formed at the corner, so if it is not installed as is, a gap will be created at the corner that leads to the attic space.
A reinforcing plate is attached to the corner to connect the mounting flange. In the conventional type, for example, as shown in FIGS. 5 and 6, an angled reinforcing plate 7 is attached to a mounting flange 9 by one inch by bending a claw 8 formed integrally therewith.

[Problem to be solved by the invention] In the conventional ceiling-embedded ventilation fan described above, the reinforcing plate 7
A hole for inserting the claw 8 must be formed on the side of the mounting flange 9, and this hole may not only become a route for oil smoke or water vapor to enter the ceiling space, but also prevent the installation of a discontinuous mounting flange. 9 is not reinforced by the reinforcing plate 7, and the mounting flange 9 remains weak, which is a problem that needs to be solved. Further, even when the assembly of the reinforcing plate 7 is automated, there are problems in manufacturing, such as requiring two steps: bending the plate of the claw 8 and heavy oiling.

This invention was made in order to solve such conventional problems, and is a ceiling-embedded type that has a strong mounting flange, does not have a structure that allows oil smoke or water vapor to enter the ceiling, and is easy to assemble. The purpose is to obtain a ventilation fan.

[Means for Solving the Problems] In the ceiling-mounted ventilation fan according to the present invention, a mounting flange that is discontinuous at a corner portion is bent and formed on the edge of an opening in the lower surface of the square opening, and the mounting flange In a ceiling-embedded ventilation fan that has a main body casing with a reinforcing plate provided at the discontinuous part, the reinforcing plate is formed into an angled shape that fits the corner part, and a part of the reinforcing plate is formed from the direction in which the mounting flange protrudes. A cut and raised piece that can be inserted into each edge of the mounting flange is formed, and by pressing the cut and raised piece after inserting it into the mounting flange, the thickness of the inserted part of the cut and raised piece and the mounting flange is adjusted to fit the reinforcing plate and the mounting. A reinforcing plate is caulked to the mounting flange so that the total thickness of the reinforcing plate is approximately the same as that of the mounting flange.

[Function] In this invention, the discontinuous mounting flange is continuous with the reinforcing plate connected by caulking, which not only becomes an integral and durable structure, but also provides a structure that serves as an intrusion route for oil smoke and water vapor from the mounting flange. can be removed, and when assembling the reinforcing plate, only the process of caulking by flat pressing is required.

[Embodiment] FIGS. 1 to 4 all show an embodiment of the present invention. The ceiling-embedded ventilation fan shown in this example has a ventilation blower (not shown) built into a box-shaped main body casing 1 with a square opening at the bottom, and is suspended and supported in the space under the ceiling by hanging bolts 2. Ru. At the edge of the opening of the main body casing 1, there is a discontinuous 1-inch flange 3 at the corner.
are each bent outward.

A reinforcing plate 4 is fixed to the back side of each discontinuous portion of the mounting flange 3 so as to connect the ends of the mounting flange 3. The reinforcing plate 4 is formed of a sheet metal slightly thicker than the mounting flange 3 in an angular shape that fits the discontinuous corner portion of the 1-inch flange 3. Two cut-and-raised pieces 5 are formed on a part of the reinforcing plate 4 and can be inserted into each end edge of the mounting flange 3 to be connected from the extending direction of the mounting flange 3. The flat portion 5a of each cut and raised piece 5 is attached to the mounting flange 3 on the plate surface of the reinforcing plate 4.
The openings 6 are formed by cutting and bending the cut-and-raised pieces 5 on the plate surface facing the flat portion 5a. To install each reinforcing plate 4, as shown in FIG. After mounting, press flat the insertion part with the mounting flange 3 (see Figs. 3 and 4). As a result, a part of the edge of the 1-inch flange 3 bites into the opening 6, and the cut and raised piece 5 overlaps with this part. That is, as shown in FIG. 4, the thickness of the inserted portion of the cut and raised piece 5 and the mounting flange 3 is approximately the total thickness of the reinforcing plate 4 and the mounting flange 3, and the thickness of the reinforcing plate 4 and the mounting flange 3 is are integrally bonded together by caulking, the discontinuous portion of the 1-inch mounting flange 3 is substantially eliminated, and the mounting flange 3 becomes strong and difficult to deform.

As mentioned above, a special structure for attaching the reinforcing plate 4 is not required on the 1-inch flange 3 side, and the opening 6 of the reinforcing plate 4 is blocked by a part of the mounting flange 3. So,
There will be no path for oil smoke or water vapor to enter the attic. In addition,
For installation on the ceiling, in addition to suspending and supporting it as an excuse, there are
A method of fixing the size flange 3 to the field edge with screws is also carried out.

[Effects of the Invention] As is clear from the above description of the embodiments, the ceiling-embedded ventilation fan of the present invention has a mounting flange that is discontinuous at the corner and is bent at the edge of the opening on the lower surface of the rectangular opening. In a ceiling-embedded ventilation fan having a main body casing in which a reinforcing plate is provided at the discontinuous part of the mounting flange, the reinforcing plate is formed into an angular shape that fits the corner part, and a part of the reinforcing plate is A cut-and-raised piece that can be inserted into each end edge of the mounting flange from the extending direction of the mounting flange is formed, and the inserted portion of the cut-and-raised piece and the mounting flange is pressed by inserting this cut-and-raised piece into the above-mentioned mounting flange. The reinforcing plate is caulked to the mounting flange so that the thickness is about the total thickness of the reinforcing plate and the mounting flange, so the discontinuous mounting flange is made into a continuous structure with the reinforcing plate, and it is integrated. Not only can it be made durable and durable, there is no need to provide a structure on the mounting flange that can be a path for oil smoke or water vapor to enter, and when assembling the reinforcing plate, crimping by flat pressing is the only step, so assembly can be automated. It also has the advantage of being easy.

[Brief explanation of the drawing]

FIG. 1 is a side view showing the installed state of a ceiling-embedded ventilation fan as an embodiment of the present invention, and FIG. 2 is a perspective view of only the main parts showing the configuration before the reinforcing plate and mounting flange are assembled. , Fig. 3 is a perspective view of the main part showing the structure of the corner part of the main casing, Fig. 4 is a sectional view of the main part showing the joint between the reinforcing plate and the mounting flange, and Fig. 5 is a conventional example. FIG. 6 is an exploded perspective view showing the main body casing of the ceiling-embedded ventilation fan, and FIG. 6 is a cross-sectional view of a 1-inch portion of a conventional reinforcing plate. In the figure, 1 is the main body casing, 3 is the mounting flange,
4 is a reinforcing plate, and 5 is a cut and raised piece. Note that the same reference numerals in the figures indicate the same or equivalent parts. Figure 1 Agent Masuo Oiwa (and 2 others), 'Me4 Cage' Figure Figure Figure Figure θ Figure

Claims (1)

[Claims] A ceiling having a main body casing that has a square opening on the lower surface, a discontinuous mounting flange is bent at the corner part at the edge of the opening, and a reinforcing plate is provided at the discontinuous part of the mounting flange. In the recessed ventilation fan, the reinforcing plate is formed into an angled shape that fits the corner part, and a cut and raised piece that can be inserted into each edge of the mounting flange from the extending direction of the mounting flange is formed in a part thereof. After inserting this cut-and-raised piece into the mounting flange, attach the reinforcing plate so that the thickness of the inserted part of the cut-and-raised piece and the mounting flange becomes approximately the total thickness of the reinforcing plate and the mounting flange. A ceiling-embedded ventilation fan characterized by a caulked flange.