JPS6234190Y2 - - Google Patents

Description

[Detailed Description of the Invention] This invention relates to a ceiling-embedded ventilation fan, and particularly to an improvement in the mounting structure of a grill that covers a ventilation opening formed in a ceiling surface.

As shown in Figure 1, this type of ceiling-embedded ventilation fan has a box-shaped body casing 1 whose bottom surface is open to the interior of the room.
A blower 2 is built inside the main body casing 1, and the main body casing 1 is embedded in the ceiling so that a ventilation opening 3 formed on the ceiling surface is covered with a grill 4.

FIG. 2 shows the conventional mounting structure of this grill 4, in which 5 is a V-shaped hanging spring, 6 is a mounting bracket fixed to the top surface of the grill 4 with screws 7, and 8 is these mounting brackets 6. The mounting screws 5a for fixing the springs 5 are locking portions formed at the tips of the hanging springs 5, and the locking portions 5a are connected to locking fittings 9 provided on the inner wall of the ventilation opening of the main body casing 1. By hooking it in the expanded state, the entire grille 4 is installed in the state shown in FIG. 1.

As mentioned above, in the conventional grille mounting structure, a separate mounting bracket 6 is specially fixed to the grille 4 using screws 7 to attach the hanging spring 5 to the grille 4.
Furthermore, the suspension spring 5 must be fixed to this mounting bracket using the screw 8, which has disadvantages such as poor workability and an increase in the number of parts used.

This invention is designed to eliminate such drawbacks, and an embodiment of this invention shown in FIGS. 3 and 4 will be described below. That is, a grill 10 that covers the lower ventilation opening 3 of the main body casing 1
The rest of the structure except for the hanging spring 11 is the same as in the case of FIG. 1 above, and 10a in the figure
A hole 10b is provided at the top of a recessed hook portion for hanging, which is integrally molded with the grille 10, at a location where the conventional mounting bracket 6 explained in FIG. 1 is fixed. Reference numeral 11 denotes a hanging spring for the grill 10, which has a V-shape as a whole, and as shown in the figure, consists of a lower end winding portion 11a, both leg portions 11b, and a bent locking portion 11c at the tip, and is constantly expanded into a V-shape. It is starting to open up.

To attach the hanging spring 11 having the above structure to the grill 10, hold down both leg portions 11b from the outside and narrow the gap between them against the elasticity of the winding portion 11a. recessed part 1
When the suspension spring 11 is inserted into the hole 10b at 0a from the front surface side of the grille 10 as shown in FIG. 4 and the hand holding it is released, the suspension spring 11 will stop at the hooked position due to its own expanding force. In this state, the grill 10 is attached to the main casing 1 together with the spring 11 as shown in FIG.
By holding the suspension spring 11 directly under the ventilation opening 3 and pushing it in until the winding part 11a of the spring hits the hole 10b, both end locking parts 11c of the suspension spring 11 are expanded outward, and these are used to ventilate the casing 1. The grille 10 can be attached to the ceiling surface 12 in an overlapping state by being engaged with each of the above-mentioned engagement fittings 9 provided on the inner wall surface of the mouth. In addition, 13 in FIG. 1 is a blower fan, 14 is a drive motor thereof, and 15 is an exhaust duct from the room.

As described above, according to the ceiling-embedded ventilation fan of this invention, the concave portion that protrudes toward the back side at the peripheral edge of the grill corresponding to the locking metal fitting fixedly arranged on the main body casing and has a hole at the top. Both locking portions of a V-shaped suspension spring are integrally formed with a hanging hook portion, and each of the hook portions has a locking portion at one end and a lower end winding portion at the other end. by inserting the lower end winding part of the suspension spring into the top hole of the hook part, so that both the locking parts are engaged with the locking fittings of the main body casing in an expanded state. This eliminates the need for separate mounting brackets and their fixing screws, which were required in the past to hold the suspension springs, as well as the suspension spring mounting screws, making it possible to reduce the number of parts. In addition, it has the advantage that no installation tools are required for attaching or detaching the grill. In addition, the hanging screws can be operated from the front side of the grill, making the installation process easy and quick, and the hanging hook part integrally formed on the grill is formed by a recessed part that protrudes from the front side to the back side. Since the lower end winding part of the suspension spring is arranged without being exposed to the grille surface side, it is advantageous in that it is not unsightly and has an excellent design.

[Brief explanation of the drawing]

Fig. 1 is a sectional view of a ceiling-embedded ventilation fan, Fig. 2 is an exploded perspective view showing a conventional grill mounting structure for this type of ventilation fan, and Fig. 3 is an exploded perspective view showing a grill mounting structure of this invention. FIG. 4 is a partially enlarged sectional view of FIG. 3. In the figure, 1 is the main body casing, 3 is the ventilation opening on its lower side, 9 is the locking metal fitting provided on the inner wall surface, and 10 is the main body casing.
10a is the grille, 10a is the hanging part, 11
is a suspension spring, 11a is its lower end winding part, 11c
indicates both end locking parts. In other figures, the same reference numerals indicate the same parts.

Claims (1)

[Scope of utility model registration request] In a ceiling-embedded ventilation fan in which the main body casing with a built-in blower is embedded in the ceiling and the ventilation opening formed on the ceiling surface is covered with a grill, the main body casing corresponds to the locking metal fitting fixedly arranged on the main body casing. A suspension hook portion consisting of a concave portion that protrudes toward the back side and has a hole at the top is integrally formed at the peripheral edge of the grille, and each hook portion has a locking portion at one end. , and by inserting both locking parts of a V-shaped hanging spring having a lower end winding part formed at the other end, and locking the lower end winding part of the hanging spring in the top hole of the hook part. A ceiling-embedded ventilation fan characterized in that both of the locking parts are engaged with locking fittings of the main body casing in an expanded state.