JPH0282044A - Ventilating fan - Google Patents

Abstract

PURPOSE:To facilitate mounting and demounting of a suction grill body and to enable the grill body to be formed in a compact manner in a frame body by a method wherein a coil spring to energize a lever body designed to pull the suction grill body to a frame body for support is contained in a cylinder part formed to the frame body. CONSTITUTION:Since a lever body 13 is hung down from a frame body 2, a catch part 21 can be easily hooked to a lock part 23 of a suction grill body 11. When the suction grill body 11 is pushed up and a lever body 13 is pressed in a cylinder part 12, a coil spring 16 is raised in a compressed state in a cylinder part 12, and a lower lock part 19 is positioned in a moving-aside bole 24 formed in the side part of the cylinder part 12. A loop part 25 of the coil spring 12 continuous from a lower lock part 19 is resiliently deformed in a manner to be inserted in the moving aside hole 24, and is displaced from other loop part. As a result, the lower lock part 19 is unhooked from a catch part 22, the coil spring 12 is elongated to lift up the lever body 13 through the resilient force of the coil spring 12, and the suction grill 11 can be brought into contact with a ceiling L without jolting.

Description

[Detailed description of the invention] (b) Industrial application fields The present invention relates to a ventilation fan that is embedded in a ceiling.

(b) Conventional technology As a technology prior to the present invention, Japanese Utility Model Publication No. 61-43172
There is a ventilation fan described in the publication. The ventilation fan supports the center part of an inverted-shaped spring body on both sides of the intake grille body, and the open ends of the spring body are elastically locked into long holes formed in a frame body attached to the ceiling. The intake grill body is installed with the expansion force of .

However, the work of locking the spring body, which has expanded in a backwards shape, into the elongated hole is done by inserting a finger through the gap between the ceiling and the intake grille body, and then resisting the spring force to reduce the expansion of the spring body. This makes it difficult to do so, and since the spring body is in an expanded position within the frame, it may come into contact with or pull on other parts.

(c) Problems to be Solved by the Invention The technical problem of the present invention is to provide a ventilation fan whose intake grille body can be easily installed and removed, and whose mechanism can be formed compactly. That is.

(d) Means for Solving the Problems The present invention forms a cylindrical part in a frame, stores a coil sprig in the cylindrical part, and stores a lever body drawn into the cylindrical part by a coil spring in the cylindrical part. This problem is solved by forming a hook part on the lower end of the intake grill body.

(E) Function According to the present invention, the coil spring is supported by the cylindrical portion without swinging laterally, and the lever body can be easily pulled out without swinging downward from the cylindrical portion, and the hook portion can be hooked on the intake grille body. .

(f) Example The present invention will be explained based on the illustrated ventilation fan 1.

FIG. 1 is a sectional view of a ventilation fan 1 attached to an opening formed in the ceiling. The ventilation fan 1 includes a box-shaped frame 2 with an opening formed on the bottom surface, and an electric fan 8 attached to the box-shaped frame 2! I3, the fan case 5 of the blower blade 4 attached to the rotating shaft of the electric motor 3, the fan case 5 of the blower blade 4 attached to the frame body, and the frame body 2 so as to cover the air outlet 6 for exhausting the air from the blower blade 4. The duct connection body 7 is attached to the duct connection body 7. The frame 2 has a lower opening flange 8 in contact with the opening edge of the ceiling and is fixed with screws. By rotating the blower blade 4, the air sucked in from the lower opening is exhausted from the blower outlet 6 through the duct 9.

The lower opening of the frame body 2 is covered with a removable intake grille body 11 in which a vent hole 10 is formed.

Square cylindrical portions 12 are formed at opposing corners of the frame 2. The upper part of the cylindrical part 12 is closed by the frame 2, and the lower part is closed by a lid 15 in which an insertion hole 14 for a lever body 13 housed in the cylindrical part 12 is formed. The lid 15 is formed integrally with the cylindrical portion 12. A coil spring 16 is housed within the cylindrical portion 12, and the coil spring 16 is formed in a size such that it can be compressed and stored within the cylindrical portion 12. A presser body 17 is formed at the upper end of the lever body 13 and is substantially inscribed in the cylindrical portion 12 . The upper and lower ends of the coil spring 16 are bent inward to form the upper locking part 1.
8 and a lower stop portion 19 is formed.

The upper locking part 18 is connected to the holding part 20 of the presser body 17. The coil spring 16 is housed in the cylindrical part 12, and the lower part is placed on the lid 15, so that the presser body 17 is installed as shown in FIG.
is urged upward to draw the lever body 13 into the cylindrical portion 12 in such a state that only the hook portion 21 at the bottom of the lever body 13 protrudes from the insertion hole 14. The upper part of the lever body 13 has a catch part 2 for the lower stop part 19 of the coil spring 16.
2 is formed. When lever body 13 is pulled down, the fourth
As shown in the figure, the lower stop part 19 is caught by the catch part 22, and the coil spring 16 is held in a compressed state. At this time, the coil spring 16 is trying to return to its original state, and a force is acting to push up the presser body 17 and a force is acting to disengage one of the lower stop parts and the catch part 22. The engagement between one lower stop part and the catch part 22 is as follows:
When transitioning from FIG. 3 to FIG. 4, the pulling force of the lever body 13 is large and the lower stop part 19 is bent by its elasticity, but the lower stop part 1 is moved by the force of the coil spring 16. Unfortunately, the engagement does not come off.

In this state, the lever body 13 hangs down significantly below the frame body 2, so that the hook portion 21 can be easily hooked onto the locking portion 23 of the intake grille body 11. The intake grille body 11 can be hung and supported by the lever body 13, and the interior of the frame body 2 can be easily inspected by being able to pull down and support the intake grille body 11 from the state shown in FIG.

From the state shown in FIG. 4, when the intake grille body 11 is pushed up and the lever body 13 is pushed into the cylinder part 12, when the lower stop part 19 is located, the loop part 25 of the coil spring 12 continuous from the lower stop part 19 is released. It is elastically deformed so as to be inserted into the shunting hole 24, and is displaced from the loop portion of the pond. As a result, the lower stop part 19 is disengaged from the hook part 22, the coil spring 12 is extended, and the lever body 13 is pulled up by the elastic force of the coil spring ring 12, and the intake grill body 11 is raised to the ceiling as shown in FIG. It can be brought into contact without any wobbling.

The hook portion 21 of the lever body 13 was formed in the L-shape as described above, and the locking portion 23 of the intake grille body 11 was formed in a ring shape, but as shown in FIGS. 7 and 8, the hook portion 21 may be formed into a ring shape, and the locking portion 23 may be formed into an inverted shape.

(G) Effects of the Invention The present invention has a coil spring that biases a lever body for pulling the intake grille body toward the frame body and supporting it, and houses it in a cylindrical portion formed in the frame body. It can be easily stored and removed, and can be formed compactly within the frame.

[Brief explanation of the drawing]

The figures show the present invention; FIG. 1 is a sectional view, FIG. 2 is a perspective view of the frame, FIG. 3 is a sectional view with the lever body pulled in, FIG. 4 is a sectional view with the lever body pulled out, and FIG. FIG. 5 is a sectional view of the process of pushing the lever body, FIG. 6 is a perspective view of the coil spring, FIG. 7 is a front view of the lower part of the lever body of another structure, and FIG. 8 is a sectional view of the same.

Claims (1)

[Claims] 1. It has a frame body with an intake opening containing an electric motor, blower blades, etc., and an intake grille body that covers the intake opening. A cylindrical part for storing a coil spring is formed inside the frame body, and a cylindrical part is formed to accommodate the coil spring. A ventilation fan in which a lever body is housed in a cylindrical part, and the lever body is biased in a direction to be drawn into the cylindrical part, and has a hook part on the lower end for connecting to an intake grille.