JPS6330911Y2 - - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to a type of ventilation fan that is inserted and installed in a ventilation pipe that communicates indoors and outdoors.

Figure 1 shows a conventional example, where 1 is a fan, 2
A fan drive motor is fixed inside a cylindrical frame 4 via a mounting rod 3 with screws 5. An air guide 6 is integrally formed in front of the fan 1 inside the frame 4, and the air guide 6 has a screw hole 8 in the center thereof into which a knob screw 7, which will be described later, can be screwed. A mounting leg 9 is integrally provided. 10 is a decorative grill, and a knob screw 7 attached to the center of the decorative grill 10 is inserted into a screw hole 8 of the frame 4.
It is attached to the frame 4 by being screwed into the frame body 4. Reference numeral 11 denotes a spring plate that is attached to the outside of the frame body 4 with the screws 5 at the same time as the mounting rod 3 is attached;
When this ventilation fan is to be attached to the ventilation pipe 12, the frame 4 is pushed into the pipe 12 and the frame 4 is fixed within the pipe 12 by the elastic force of the spring plate 11. However, if the ventilation pipe 12 opens horizontally or diagonally upward in a vertical part such as a wall, it is sufficient to fix it with only the spring plate 11, but as shown in FIG. In the case where the opening is vertically downward, the resiliency of the spring plate 11 alone cannot ensure secure attachment. Therefore, conventionally, as shown in FIG. 1, a mounting piece 14 is integrally stretched around the outer periphery of the end of the frame 4, and the mounting piece 14 is brought into contact with the wooden frame 15 of the ceiling 13 in which the pipe 12 is opened. rear,
It was fixed with fixing screws 16. However, by stretching the attachment piece 14 to the frame 4, the mold for molding the frame 4 becomes larger. Furthermore, when only the frame body 4 is transported, the front mounting piece 14 becomes an obstacle and becomes bulky, and the mounting piece 14 is sometimes damaged.

This proposal was made in view of the above points, and the second
An embodiment of the present invention will be described based on FIGS. 4 to 4. Note that structural parts that are the same as those in the prior art are designated by the same reference numerals, and explanations thereof will be omitted.

Reference numeral 21 denotes a frame body having the proposed structure, inside which the fan 1 and motor 2 are fixed with screws 5, and on the outer periphery of which a spring plate 11 is fixed with the screws 5. A knob screw 7 is screwed onto the rear surface of the motor 2 for attaching the decorative grill 10 to the side of the frame body 21 where the rear surface of the motor 2 is located when the frame body 21 is inserted into the ventilation pipe 12 from the air guide 6 side. A mounting base 22 that can be mounted is provided. Since the frame 21 of the ventilation fan of this invention has no part on its outer periphery that protrudes beyond the spring plate 11, it can be used by changing the insertion direction with respect to the ventilation pipe 12, and by doing so, the motor 2 can be rotated in the opposite direction. It is convenient to use as it can be used as a ventilation fan exclusively for exhaust or intake without any need for ventilation.

Reference numeral 23 denotes a substantially L-shaped mounting bracket that is detachably attached to the end of the frame 21, and one end 24 of the mounting bracket 23 extends from the frame 21 and extends from the ceiling 13 where the ventilation pipe 12 is opened. It comes into contact with the frame 15. The one end portion 24 is formed with an insertion hole 25 through which the mounting screw 16 is inserted, and the mounting fitting 23 is securely fixed to the wooden frame 15 and, as a result, the frame body 21
is securely attached to the ventilation pipe 12. Therefore, even if this ventilation fan is installed on the ceiling as shown in the figure, it will not fall and is safe. In addition, since the mounting fittings 23 can be removed as appropriate, they do not take up much bulk during transportation, and there is no protrusion that is easily damaged, resulting in less damage.

The mounting fitting 23 is attached to the frame 21 by engaging a locking portion 27 formed on the other end 26 of the fitting 23 into an engagement hole 28 formed in the frame 21 from inside the frame. The locking portion 27 is connected to the frame 2
1, and when the step 29 is engaged with the engagement hole 28, the step 29 comes into contact with the edge of the engagement hole 28, and the tip end forms a frame. The base end is in contact with the outer periphery of the body 21, and the base end is in contact with the frame body 21.
comes into contact with the inner surface of Therefore, as long as the one end 24 of the mounting bracket 23 is positioned so as to protrude from the frame 21, the engagement between the mounting bracket 23 and the frame 21 will not come off, and the wooden frame 1
5, due to the weight of the frame 21, a force is applied to the mounting bracket 2 in the direction of strengthening the engagement.
3, it can be reliably attached to the frame 21 without using screws or the like. Further, if the engagement holes 28 are formed at both ends of the frame body 21,
The frame body 21 can be easily replaced by changing the insertion direction of the frame body 21 as appropriate, making it easy to use.
Furthermore, in this embodiment, a notch 3 into which the intermediate portion 30 of the mounting bracket 23 fits into the end of the frame 21 is provided.
1, the mounting bracket 23 is attached to the frame 21.
There is no wobbling in the circumferential direction.

In this embodiment, the decorative grille 10 is attached to the frame body 21 using the knob screws 7, but an engaging piece is provided protruding from the end of the frame body 21, and the decorative grille 10 is attached to the frame body 21 by a well-known clamp connection. You may as well do it.

In the embodiment described above, the frame 2 of the decorative grill 10
Since the attachment to 1 is carried out using the knob screw 7, the attachment is time-consuming. Furthermore, in the clamp connection described as the attachment of the decorative grille 10 of the different embodiments, an engaging piece is integrally formed at the end of the frame body 21, so if a strong force is applied and the frame body 21 is damaged, the frame body 21 will be damaged. This requires a lot of effort and effort to repair, and FIGS. 5 to 7 show embodiments of the present invention that solve this problem.

A wind tunnel 33 is formed on the rear surface of the decorative grille 10 by cutting and raising the intermediate portion 30 of the mounting bracket 23 to form an engagement piece 32 that projects forward from the edge of the frame 21.
An L-shaped engagement rib 34 is formed on the side surface of the holder. The decorative grille 10 is attached to the frame body 21 by engaging the engaging ribs 34 with the engaging pieces 32. Therefore, there is no need to form an engaging piece on the frame 21, and since the engaging piece 32 is formed integrally with the mounting bracket 23, the engaging piece 32 will not be damaged. Even if the decorative grille 10 is attached with strong force, the engaging ribs 34 of the decorative grille 10 will be damaged and can be easily repaired.

As mentioned above, the main idea is to attach and detach the frame to the end of the frame.
A type of mounting bracket is installed to ensure that the frame body is attached to the ventilation pipe, and is necessary when mounting on a wall, etc. that does not require a mounting bracket, and when installing on a ceiling, etc., where a mounting bracket is required. The mounting bracket can be removed as appropriate, making it convenient to use, and since there is nothing protruding from the outer periphery of the frame, the frame is not bulky to transport. In addition, one end of the mounting bracket has a screw insertion hole for fixing it to the wall of the opening of the ventilation pipe, and the other end has an engagement hole formed in the engagement hole formed in the frame. It has a locking part that engages from the inside of the frame.
The mounting bracket can be reliably attached to the frame with a simple structure without using screws, etc., and the mounting bracket can be fixed with screws regardless of the thickness of the ceiling board, which has great practical effects. .

[Brief explanation of drawings]

Fig. 1 is a sectional view of a conventional ventilation fan, and Figs. 2 to 4 show an embodiment of the present invention.
The figure is a cross-sectional view when installed in a ventilation state, FIG. 3 is a cross-sectional view when installed in an intake state, and FIG. 4 is a perspective view of the frame. 5 to 7 show other embodiments of the present invention, in which FIG. 5 is a sectional view in an exhaust state, FIG. 6 is a perspective view of the frame, and FIG. 7 is a perspective view of the main part. 21... Frame body, 1... Fan, 2... Motor,
DESCRIPTION OF SYMBOLS 10... Grill, 11... Spring plate, 12... Ventilation pipe, 23... L-shaped mounting bracket, 24... One end, 25... Insertion hole, 16... Screw, 26...
Other end, 27...Locking part, 28...Engagement hole, 30
... intermediate part, 32 ... engagement part, 34 ... locking piece,
31...notch.

Claims (1)

[Claims for Utility Model Registration] 1. A frame body with a fan drive motor fixed therein, a grille attached to the opening end of the frame body on the indoor side, and a grille attached to the outer periphery of the frame body to match the diameter of the ventilation pipe. and a substantially L-shaped mounting bracket that is removably attached to the end of the frame, and one end of the mounting bracket has a screw for fixing it near the opening of the ventilation pipe. A ventilation fan having an insertion hole formed therein, and a locking part formed at the other end of the frame body to engage with an engagement hole formed in the frame body from the inside of the frame body. 2. The ventilation fan according to claim 1, which is a registered utility model, wherein an engaging portion is formed in an intermediate portion of the mounting bracket, with which a locking piece formed on the grille engages. 3. The ventilation fan according to claim 1 or 2, wherein the engaging holes are formed at both ends of the frame. 4. The ventilation fan according to any one of claims 1 to 3, wherein the end of the frame is formed with a notch into which the intermediate part of the mounting bracket fits.