JPS6118349Y2 - - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to a ventilation fan used by being connected to the outdoor open end of a ventilation pipe, and particularly relates to an improvement in the structure of a cover for preventing rain intrusion.

As shown in FIG. 1, this type of ventilation fan has a fan 2 and a driving motor 1 installed inside a substantially cylindrical ventilation fan main body 4 with a ventilation opening 4a provided in the peripheral wall, and the main body 4 is connected to a ventilation pipe. It is used by being connected to the outdoor open end of No. 5.

In such a ventilation fan, a rain intrusion prevention cover 3 is conventionally provided at the end of the main body 4 on the side opposite to the pipe connection side, facing the open end surface of the pipe 5 on the outdoor side.
The motor 1 is supported within the main body 4 by being fixed to the inner wall of the cover 3 with screws 4c via mounting legs 4b.

The main body of the motor 1 consists of two divided bodies, namely motor main bodies 1A and 1B, and these motor main bodies 1
A and 1B are connected to each other by screws not shown. Further, the main body 4 and the rain intrusion prevention cover 3 are connected by screws (not shown).

However, in the above configuration, the motor 1 must be fixedly attached to the rain intrusion prevention cover 3 using the screws 4c and the mounting feet 4b, and the motor 1 itself must be suspended and supported from the inner wall of the cover 3. Because there are
The support state of the motor 1 is unstable and there is a risk of it falling, so reinforcing members etc. are required to firmly support the motor 1...Moreover, this installation work is labor-intensive and requires a large number of parts. be.

SUMMARY OF THE INVENTION In view of the above-mentioned conventional circumstances, it is an object of the present invention to provide a ventilation fan that can simplify the installation work of the motor and stabilize the supporting state of the motor.

Therefore, in the present invention, the end wall of the motor body on the temporary pipe connection side of the ventilation fan body is formed so as to double as a rain-preventing cover that covers the opening of the ventilation fan body on the side opposite to the pipe connection, and the cover is attached to the ventilation fan body. I did it like that.

In this configuration, the motor body including the cover can be directly supported on the ventilation fan body, and the supporting state of the motor can be stabilized, and the cover can be directly attached to the ventilation fan body. In addition, since the supporting state of the motor can be stabilized, there is no need for reinforcing members to firmly support the motor.
The number of parts can be reduced and workability improved.

Hereinafter, one embodiment of the present invention will be described based on FIGS. 2 to 4.

In FIG. 2A, 5 is a ventilation pipe, 8 is a ventilation fan connected to the open end of the pipe 5 on the outdoor side;
Reference numeral 14 denotes a substantially cylindrical main body, and as shown in FIG. 2B, columnar members 14b are erected at appropriate intervals at the end of a cylindrical member 14a, and ventilation holes are provided between the columnar members 14b. In this embodiment, it becomes an exhaust port.

This ventilation fan main body 14 includes a cylindrical member 14
The open end of the pipe a is fitted onto the outer periphery of the outdoor open end of the pipe 5, and fixed with the screw 6.

Reference numeral 2 denotes a fan, which is arranged so that its axial direction coincides with the central axis direction of the pipe 5. 11 is a drive motor for the fan 2, 11A is its main body, and 11a is a motor main body component forming a part of the main body 11A, the part facing the opening on the side opposite to the pipe connection of the ventilation fan main body 14 is open. formed into a shape.

Reference numeral 13 denotes an end wall of the motor main body 11A facing the opening on the side opposite to the pipe connection of the ventilation fan main body 14, and is formed in a shape to form a rain intrusion prevention cover that covers the opening.

The cover 13 is fixed with screws 15 to the open end of the component 11a of the motor main body 11A, so that the main body of the motor 11 is integrated with the motor main body 11A and the cover 13, and is fixed with screws 16 to the open end of the ventilation fan main body 14. As a result, it has become effective in preventing rain from entering.

According to this configuration, since the end wall of the motor body 11A is also used as a rain intrusion prevention cover,
integrated when forming the motor 11 as a product,
This can be attached to the ventilation fan body 14, and when installing the motor 11 after manufacturing, the mounting feet 4b and screws 4c (see Fig. 1) for attaching the motor body to the cover, as in the conventional case, are unnecessary. Since it is a component and the motor body 11A only needs to be attached to the ventilation fan body 14 with the screws 16, the installation work can be easily performed without requiring much time and effort.

In addition, in this configuration in which the constituent members of the motor body 11A are directly supported by the ventilation fan body 14, the motor 11 is supported reliably and firmly, and the support reinforcement of the motor 11 is not required as in the conventional case. There is no need to apply it.

3A and 3B show another embodiment of the present invention, in which a plate-like metal fitting 7 is used for the ventilation fan main body 14 shown in FIG. 2, and the fan 2 is connected to a pipe as shown in the figure. 5 may be located inside,
If such a plate-shaped metal fitting 7 is used, even if there is a slight difference in the diameter of the pipe 5, as shown in FIG. 4, this can be adequately dealt with by deforming the plate.

In FIGS. 3 and 4, 23 is an end wall of the motor body 11A having the same function as the cover 13 of the previous embodiment.

The fitting 7 is connected to the pipe 5 by providing a notch at the lower end of the fitting 7 and fitting the groove 7a formed by bending this into the end of the pipe 5, as shown in Fig. 3B. Just fasten it with screws.

As explained above, according to the present invention, by making the end wall of the fan drive motor also serve as a rain intrusion prevention cover, it is possible to reduce the number of parts and improve the workability of installing the motor. Moreover, the support state of the motor to the ventilation fan body can be made strong and reliable, which has a great practical effect.

[Brief explanation of the drawing]

Fig. 1 is a longitudinal sectional view illustrating a conventional ventilation fan structure, and Fig. 2 is a diagram showing a ventilation fan structure according to the present invention, where A is a longitudinal sectional view, B is a view taken in the direction of arrow A in A, and Figs. Figure 4 is a diagram showing another embodiment of the same ventilation fan,
3A and 4 are longitudinal cross-sectional views, and FIG. 3B is a view taken along arrow B in FIG. 2...Fan, 5...Ventilation pipe, 11...
Motor, 11A... Motor body, 13, 23...
Rain intrusion prevention cover, 14... Ventilation fan body, 16...
…screw.

Claims (1)

[Scope of utility model registration request] A ventilation fan in which a fan and a fan drive motor are installed inside a substantially cylindrical ventilation fan main body with a ventilation opening provided in the peripheral wall, and the main body is used by connecting to the outdoor opening end of a ventilation pipe. an end wall of the motor body on the side opposite to the pipe connection of the ventilation fan body;
A ventilation fan characterized in that it is formed to also serve as a rain intrusion prevention cover that covers the opening of the ventilation fan body on the side opposite to the pipe connection, and the cover is attached to the ventilation fan body.