JPH0233054Y2 - - Google Patents

Description

[Detailed description of the invention] [Industrial field of application] This invention relates to a ceiling-embedded ventilation fan, and in particular improves the mounting structure of a grill that covers an inlet on the ceiling surface.

[Conventional technology]

As shown in FIG. 5, this type of ceiling-embedded ventilation fan includes a blower 1 built into a box-shaped main body casing 5 with one side open as an indoor suction port.
This main body casing 5 is embedded in the ceiling, and a grill 8 is attached to a suction port 6 opened on the surface of the ceiling A.

Note that the blower 1 is built in a main body casing 5 and is composed of a fan 2 and a fan drive motor 4, and is housed in the fan casing 3. 7 is a discharge port provided on the side wall of the main body casing 5;
indicates a ventilation hole.

Here, a conventional example of a structure for attaching the grille 8 to the main body casing 5 is shown in FIG. That is, the conventional grille mounting structure has a configuration in which the grille 8 is suspended and supported on the main body casing 5 using a hanging tool consisting of a wire spring 12 as shown in FIG. Reference numeral 12 denotes a locking metal fitting 14 which is fixedly attached by screws 13 to a mounting metal fitting 10 which has screws 11 secured to the inner surface of the grille 8, and which has a tip hook portion of this wire spring 12 on the inner wall of the main body casing 5.
The grille 8 is attached by hooking it on.

[Problem that the invention attempts to solve]

However, as shown in FIG.
2 is suddenly released, the wire spring 12 returns from the broken line D as shown by the arrow DA due to its spring elasticity, and the hook portion 12a at its tip applies an impact to the surface of the grille 8. This caused the grille 8 to be deformed.

This idea was made in order to solve this problem, and aims to provide a ceiling-embedded ventilation fan that can prevent the grille from being shocked and deformed even if the hanging fixture is suddenly released during installation or removal. purpose.

[Means for solving problems]

The ceiling-embedded ventilation fan according to this invention includes a main body casing that is embedded in the ceiling and has a built-in blower and a suction port that opens on the ceiling surface and has a locking fitting on the inner surface, and a main body casing that is connected to the main body casing at the suction port of the main body casing. A grille that is detachably attached to the grille, a roughly V-shaped hanger with spring elasticity that hangs the grille by hooking it to a locking fitting on the main body casing, a hanger installed on the inner surface of the grille that fixes the hanger and also hangs the grille. A mounting bracket having a convex piece for regulating the return force of the spring elasticity is provided in the middle of the locus of the spring elasticity.

[Effect]

In this invention, the grille is attached by holding a hanger fixed to the support piece and hooking the tip of the hanger to the locking metal fitting from the intake port of the main body casing, and the hanger is separated for installation and removal. The return force of the spring elasticity is regulated by the convex piece to prevent the tip of the hanger from reaching the grille.

〔Example〕

Hereinafter, embodiments of the ceiling-embedded ventilation fan of this invention will be described based on the drawings. FIG. 1 is a cross-sectional view showing the overall configuration of one embodiment, and what is shown as a cross-sectional view is the same as that in FIG. 5, and the same parts as in FIG. Omitted.

This invention is characterized by the part of the mounting bracket 10 on the side of the grille 8, and this part will be mainly explained with reference to FIGS. 2 and 3. In FIGS. 2 and 3, the same parts as in FIGS. 4 to 6 are designated by the same reference numerals.

Figure 3 is a sectional view of Figure 2;
As is clear from the figure, a mounting bracket 10 is attached to the grille 8 by screws, welding, adhesive, or the like. This mounting bracket 10 is formed in a "〓" shape, and has a convex piece 10a formed on its upper surface. A U-shaped cutout 10b is formed in the center of the convex piece 10a, and the leg of the wire spring 12 as a substantially V-shaped hanging device is inserted into the cutout 10b. The base of is fixed to the mounting bracket 10 with screws 13.

When both legs of the wire spring 12 are grasped with the hands 20, they form two substantially parallel lines, but when the hands 20 are released, the spring elasticity causes them to expand into an obtuse angle as shown in FIG. At this time, the return force of the spring elasticity is regulated by the two convex pieces 10a.
In other words, the two convex pieces 10a are located halfway along the locus created by the spring elasticity of the two legs of the wire spring 12. The other configurations are the same as those shown in FIGS. 4 to 6.

In this way, the mounting bracket 10 having the convex piece 10a
With the wire spring 12 attached to the main body casing 5, as shown in FIG. By inserting the grille 8 into the main body casing 5 and hooking it on the locking fitting 14 of the main body casing 5, the grill 8 can be removably suspended from the main body casing 5 in the same manner as in the conventional case.

Furthermore, when the grille 8 is attached to or removed from the main body casing 5, if the hands 20 are suddenly released from both legs of the wire spring 12, the wire spring 12 will move in the direction of the arrow DA due to its spring elastic force as shown in FIG. It tries to return suddenly to the position indicated by the broken line D, but at this time, the return force is regulated by the convex piece 10a.

As a result, the hook portion 12a of the wire spring 12 does not reach the grille 8, resulting in the state shown in FIG. 3, and the hook portion 12a does not impact the grille 8, preventing the grille 8 from being deformed or damaged. can.

[Effect of idea]

As explained above, in this invention, a convex piece is provided on the mounting bracket to restrict the return force due to the spring elastic force of the sling, so that even if the sling is removed from the hand, The tip of the hanger no longer impacts the grill, and deformation and damage to the grill can be prevented.

[Brief explanation of the drawing]

Fig. 1 is a sectional view showing the overall configuration of one embodiment of the ceiling-embedded ventilation fan of this invention, Fig. 2 is a perspective view of the grill in the same ceiling-embedded ventilation fan, and Fig. 3 is the grill of Fig. 2. A cross-sectional view showing the mounting bracket part of the
Figure 4 is a perspective view of the grill in a conventional ceiling-embedded ventilation fan, Figure 5 is a cross-sectional view of a conventional ceiling-embedded ventilation fan, and Figure 6 is a conventional ceiling-mounted ventilation fan in which the hanging fixture impacts the grill. FIG. 1...Blower, 5...Body casing, 6...
Suction port, 8...Grill, 10...Mounting bracket, 10
a...Convex piece, 10b...Notch, 12...Wire spring, 12a...Hook part, 14...Locking metal fitting. Note that the same reference numerals in the figures indicate the same or corresponding parts.

Claims (1)

[Scope of utility model registration request] A main body casing that is embedded in the ceiling and has a built-in air blower and a suction port that opens on the ceiling surface and has a locking metal fitting on the inner surface, a grill that can be detachably attached to cover the suction port of this main body casing, and a roughly V-shaped A hanging device made of a spring member, which hangs the grill by hooking its tip to the locking metal fitting, and is provided on the inner surface of the grill and supports the base of the hanging device and follows the trajectory of the spring elasticity of the hanging device. A ceiling-embedded ventilation fan equipped with a mounting bracket having a convex piece that regulates the return force of spring elasticity in the middle.