JPS62172136A - Ventilation fan - Google Patents

Abstract

PURPOSE:To reduce a fixing time and a repairing and maintaining time by a method wherein a fixing of a ventilation fan is performed by fitting a cylinder having an adapter connected with a duct in advance and having a side plate engaged with it in the grooves of a first frame and a second frame and then fixing them with fixing screws from below. CONSTITUTION:A fixing operation for a ventilation fan is performed such that at first an adapter 1 is fixed to a duct 6, then both right and left ends of a flange 1a of the adapter 1 are engaged with a side plate 4 to form a cylinder, a frame 3 is inserted from an opening of a ceiling plate 9 in such a way as a lower end of the cylinder may be fitted in the groove 3a and then fixed to the ceiling plate 9 at its fixing flange 3b. The upper end of the cylinder is fitted into the groove 2a at a position coinciding with a through-pass port 5 of the frame 3, and lastly a fixing screw 5 is passed through the through-pass port 3c of the frame B3 from below and screwed into a threaded hole 2b of the frame 2. Therefore, a fixing direction of the duct 6 can freely be selected and its fixing operation becomes easy.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of Use in Childcare The present invention relates to a ventilation fan that is fixed to a ceiling and installed in a duct to ventilate indoor air.

BACKGROUND OF THE INVENTION Conventionally, this type of ventilation fan has generally had a configuration as shown in FIG.

That is, 101 is a ventilation fan main body, and 102 is an adapter that abuts this ventilation fan main body 101 and fixes it with bolts 103. 104 is a duct for sending dirty air in the room to the outside, and is fixed to the adapter 102. 106 is a ceiling plate to which the ventilation fan main body 101 and adapter 102 are attached. Reference numeral 106 denotes a louver that covers the lower opening of the ventilation fan main body 101 and is attached to the indoor side. In the above configuration, the installation work for the ventilation fan is to first fix the adapter 102 to the opening side of the ceiling board 105, connect the duct 1o4, and then insert the ventilation fan main body 101 through the opening in the ceiling board 106 to The ventilating fan main body 101 and the adapter 102 are fixed to the plate 105 with bolts 103, and finally, the louver 106 is attached to the lower opening of the ventilating fan main body 101 to complete the process. (For example, Japanese Patent Publication No. 57-33324) Problems to be Solved by the Invention In such a conventional configuration, the ventilation fan main body 1o1 is often a rectangular parallelepiped, and the ventilation fan main body 101 is placed on the ceiling plate 106.
If the mounting hole is drilled according to the direction, the mounting direction is fixed and it is impossible to change the mounting direction.Furthermore, when connecting the duct 104 and the adapter 102, fine adjustment of the mounting direction of the adapter 102 is possible. If this is not possible, the construction will be extremely difficult, and furthermore, the fixing screws 103 that fix the adapter 102 and the ventilation fan main body 101 must be tightened horizontally and are located inside the ventilation fan main body 101, making it extremely difficult to fix them. There was a problem.

The present invention solves these problems and aims to provide a ceiling-embedded ventilation fan that is easy to fix and allows for easy adjustment of the mounting direction of the adapter and change of the mounting direction of the ventilation fan body. O Means for solving the problem In order to solve this problem, the present invention has a closed top surface, an open bottom surface, fixed blades and a motor inside, and a circular shape on the bottom surface. The first frame has a cylindrical shape with a groove formed therein, a top surface and a bottom surface are open, a circular groove is provided around the entire circumference at the open end of the top surface, and a mounting flange extending outward is provided at the bottom. The second
a frame body, an adapter connecting a duct and having a flange that fits into a part of each groove of the first frame body and the second frame body; a side plate that fits into each groove of the frame and engages with a flange of the adapter to form a cylinder;
and a fixing screw for fixing the second frame to the frame.

Function: With this configuration, the ventilation fan can be installed by fitting the cylinder formed by engaging the adapter to which the duct has been connected in advance and the side plate into the grooves of the first frame body and the second frame body, respectively. ,
This is done by fixing the first frame body and the second frame body from below with fixing screws across this cylinder, so the installation direction of the duct can be freely selected, and fine adjustment of the installation direction is also easy. This can be done.

EXAMPLE An example of the present invention will be described below with reference to FIGS. 1 and 2.

In the figure, reference numeral 1 denotes an adapter for connecting a duct 6 that guides indoor dirty air to the outdoors, and has a flange 1a in the form of a partially cut-off cylinder. 4 is flange 1
This is a side plate that forms a cylinder by engaging with the left and right ends of a. 2 is a cylindrical frame A with a closed top surface and an open bottom surface, in which a motor with internal blades 7 fixed is fixed, and a circular groove 2a in which the upper end of the cylinder fits into the bottom surface and a fixing hole 2a. A screw hole 2b into which the screw 5 is inserted is provided. 3 is a cylindrical frame B with open top and bottom surfaces, and the open end of the top surface is provided with fg 3 a into which the bottom end of the cylinder fits all around, and the bottom part extends outward. A mounting flange 3b is formed, and a through hole 3C for the fixing screw 5 is provided at a position corresponding to the screw hole 2b provided in the frame A. Note that 9 is a ceiling plate provided with a circular opening 9a into which the frame body B is inserted.

In the above configuration, to install the ventilation fan, first fix the adapter 1 to the duct 6, then attach the flange 1a of the adapter 1.
The left and right ends of the frame B are engaged with the side plates 4 to form a cylinder, and the lower end of the cylinder is fitted into the groove 3a of the frame B.
3 through the opening of the ceiling plate 9, and attach the mounting flange 3b.
At this point, it is fixed to the ceiling board 9 with screws or the like. After that,
Fit the upper end of the cylinder into the groove 2a at the position where the screw hole 2b of the frame A2 matches the penetration hole 6 of the frame B3, and finally insert the fixing screw 6 into the frame B3 from below. Through mouth 3C,
This is completed by screwing into the screw hole 2b of the frame A2.

As described above, according to this embodiment, the frame B3 has a cylindrical shape, and therefore the opening 9a provided in the ceiling plate 9 is also circular, so there is no restriction on the mounting direction of the frame B, and the duct Since the adapter 1 to which the duct 6 is fixed is also fitted into the circular grooves 2a and 2b together with the side plate 4, the mounting direction of the duct 6 can be freely selected, and the mounting can be easily finely adjusted. The fixing screw 5 can be tightened in the vertical direction from the indoor side, making the installation process easier.

Effects of the Invention As is clear from the above description of the embodiments, according to the present invention, the mounting position of the ventilation fan can be freely set in the circumferential direction, and the fixing screws for mounting cannot be mounted from the indoor side. This also has the effect of shortening the time required for repair and maintenance work.

[Brief explanation of drawings]

FIG. 1 is a sectional view of a ventilation fan according to an embodiment of the present invention in an installed state, FIG. 2 is an exploded perspective view of the ventilation fan, and FIG. 3 is a sectional view of a conventional ventilation fan in an installed state. 1...Adapter, 2...Frame A, 2a
, 3a...Groove, 3...Frame B, 3b.
...Mounting flange, 4...Side plate, 5...
...Fixing screw, 6...Duct, A...Blade, 8...Motor. Name of agent: Patent attorney Toshio Nakao and 1 other person 4-
Age 7°ri 2-11-1 book, Kiri 2α, Mu groove 3--J + 1 core ε 1st Figure 3b-J, attached, Ranu 4---ψ Risum S-11 Koe? ll! C 6-゛-Schiff L 7----1 Kesaka 8-117-Evening

Claims (1)

[Claims] A first cylindrical frame body with a closed top surface and an open bottom surface, in which the blades and motor are fixed, and a circular groove in the bottom surface; a second frame having a circumferential circular groove at its end and an outwardly extending mounting flange at its bottom; and one groove in each of the first frame and the second frame. an adapter that connects the duct and has a flange that fits into the first frame and the second frame, and that fits into the grooves of the first frame and the second frame and engages with the flange of the adapter to form a cylinder. A ventilation fan comprising a side plate and fixing screws for fixing a second frame to the first frame by sandwiching the adapter and the side plate.