JPS61165536A - Ventilating fan - Google Patents

Abstract

PURPOSE:To improve the interior sense and cleaning property of the ventilating fan by fitting a cover to which a plurality of shutters which operate in conjunction with the drive and stoppage of a blower are axially connected to the front surface of the main body frame, into a dressed frame, and providing shutters on the rear surface of a filter. CONSTITUTION:A style frame 12 is mounted on a main body frame 1 in a freely attachable and detachable manner, and a cover 16 is fitted into the front surface of the style frame 12 in a freely attachable and detachable manner. A plurality of shutters 171 - - - 17n are provided on the front surface of the cover 16 and fitted therein in such a manner that these shutters 171 - - - 17n open downwardly but close upwardly with respect to the cover 16. An inductor type synchronous system timing motor 28 is secured to the end portion of a support 9 and a lever 30 is axially coupled to an output shaft 29 of the motor 28. The forward end of the lever 30 moves a connecting plate 19 upwardly and downwardly in accordance with the normal or inverse rotation of the timing motor 28 thereby to open or close the shutters 171 - - - 17n. A filter 35 is fitted into a cylindrical part 34 of a frame body 33 to prevent invasion of rain water, insects and the like. Shutters 171 - - - 17n are close during the operation of the ventilating fan, and are opened downwardly with the start of the operation and are closed upwardly so that the rotation of the vane 5 is made invisible.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Application of the Invention] The present invention relates to a ventilation fan whose front surface is covered with a shutter that can be opened and closed.

[Background of the invention]

Conventional ventilation fans have a decorative frame that is removably attached to the ventilation fan body frame, and the front surface of the ventilation fan is covered with a single decorative board that can be opened and closed, as described in, for example, Japanese Patent Application Laid-Open No. 59-44535. The structure uses a drawstring to open and close the decorative panel, and has a switch that turns on and off the blower motor in response to the opening and closing of the decorative panel.However, during operation, the decorative panel opens forward. Therefore, the blades of the blower can be seen from the inside of the room, and when the decorative panel is opened, it will fly forward.
This creates a feeling of pressure on the user and moves the center of gravity of the entire ventilation fan forward, which increases the load on the mounting part and makes it mechanically unstable, causing problems with interior design and safety.
Since the shutter was located at the rear of the blower, there was a drawback that it was difficult to clean.

[Purpose of the invention]

The present invention improves the above-mentioned drawbacks, improves the interior appearance during operation, makes cleaning the periphery of the main body frame and the rear surface easier, and provides a ventilation fan with good mounting stability.

[Summary of the invention]

In the present invention, a cover that is linked to the start and stop of the blower and has a plurality of shutters pivoted at the lower end of each shutter is fitted onto the front of the main body frame of the ventilation fan, and a shutter is attached to the rear of the main body frame. The feature is that a filter is fitted to improve interior design and ease of cleaning.

[Embodiments of the invention]

An embodiment of the present invention will be described below with reference to FIGS. 1 to 6.

FIG. 1 is a perspective view showing the outline of the present invention, and FIG. 2 is a longitudinal cross-sectional view showing the state in which the invention is attached to a wall.

In FIG. 2, the main body frame 1 is assembled into a wooden frame 3 provided in a ventilation hole bored in a room wall 2. By screwing bolts 4 into the main body frame 1, the reaction force of the main body frame 1 is used to move the main body frame 1 into the second The main body frame 1 is fixed in the wooden frame 3 by pressing downward in the figure.The catch 10.10' provided inside the main body frame 1 has a thumbscrew 11.
The support body 9 is screwed to the support body 9, and the blades 5 are attached to the support body 9.
A well-known blower 7 consisting of an electric motor 6 and a motor 6 is fixed.

The decorative frame 12 is inserted into the projections 13.13 provided at the upper and lower parts of the main body frame 1 by pushing it from the left side to the right side in FIG.
' and recesses 14° and 14' provided in the decorative frame 12 are configured to fit together, and are detachably attached to the main body frame 1. The center part of the decorative frame 12 is formed into a bell mouth 15 shape. The cover 16 is removably fitted on the front surface of the decorative frame 12. Furthermore, there are a plurality of shutters 171...171 on the front surface of the cover 16, and as shown in FIG. □・・・27. ．． 271'・
...27. ' Holes 231...23. ．． 231'
...23. 'and.

Bin 18□ formed on the inner surface 22.22' of the cover 16
...18□181'...18. ′ are loosely fitted into each other, so that the shutter 17. ...171 is fitted into the cover 16 so that it opens downward but closes upward. The shutters 171 . . . 17° are made of a suitable elastic material, and are bent during the fitting process, so that they will not easily come off after fitting. Connecting plate 1
9, a side wall 26 having a step A outward from the inner surface 22 and shutter side plates 27i...27. (Fig. 3 and 4), and the supporting shaft 201 provided on the connecting plate 19.
・・２０． Depending on the shutter side plate 27□...27.
Holes 241...24. It fits loosely.

The tip of the lever portion 39 of the connecting plate 19 is bifurcated to form a lever receiving portion 21.

In FIG. 2 and FIG. 5, an inductor type synchronous timing motor 28 is fixed to the end of the support 9, and a lever 30 is pivotally attached to the output shaft 29 of the timing motor 28. The tip of the lever 30 is located within the lever receiving portion 21 of the connecting plate 19, and by moving the connecting plate 19 up and down according to the rotation of the timing motor 28 in the forward and reverse directions, the shutter 171.
...17. It opens and closes. Furthermore, in order to restrict the range of rotation of the lever 30 and start/stop the timing motor 28, the opening completion state detection switch 31 and the closing completion state detection switch 32 are fixed to the support 9, and the shutter 171. ...17. In the fully open state, □Lever 30
presses the push button 40', and the lever 30 presses the push button 40 when the shutter 17 is closed.

The frame body 33 is a chamber! ! ! 2 with wood screws or the like, a cylindrical part 34 is formed toward the inside of the wall, and the tip of the cylindrical part 34 fits into the inner surface of the main body frame 1. Moreover, the cylindrical part 34 of the frame body 33
A filter 35 is removably fitted in the housing to prevent rainwater and insects from entering from outside. The weather cover 39 is attached to legs 37 formed on the frame 33 at a certain distance from the frame 33. An oil reservoir 38 is provided outside the lower part of the frame 33.

FIG. 6 is a diagram of an electric circuit used in the present invention, and shows a wiring diagram when the motor 6 is in a stopped state and the shutters 17□...17 are also in a closed state.

Both the closing completion state detection switch 31 and the opening completion state detection switch 32 are normally closed contacts, and are brought into the open state by pressing push buttons 40 and 40' shown in FIG. The electromagnetic switch 41 has a normally closed contact,
When the coil 42 is energized, the contacts 43A and 43B are closed. The operation control switch 44 and the electromagnetic switch 41 form a control section, but are located at a different location from the main body frame 1 in FIG.

To operate the blower 7, the movable contact piece 44A of the operation control switch 44 is switched to the fixed contact 44B. As a result, the circuit of the electric motor 6 is closed and the electric motor 6 rotates, and the electromagnetic switch 41
Since the coil 42 is energized and the normally open contacts 43A and 43B are closed, the circuit of the timing motor 28 is closed, and the timing motor 28 rotates clockwise. In FIG. 2, since the lever 30 rotates clockwise, the link receiving portion 2
1, push up the connecting plate 19 and shutter 171
...17. is opened upward as shown by the broken line in Figure 2,
6 shutters 171...17 that operate downward as if closing
．． When the opening is completed, the link 30 pushes the push button 40' of the opening completion state detection switch 31, so the movable contact piece 31A in FIG. 6 is disconnected from the fixed contact 31B, the circuit of the timing motor 28 is opened, and the timing motor 28 is stopped. do. At this time, as shown in FIG. 2, the push button 40 of the blockage completion state detection switch 32 is no longer pressed, so the sixth
In the figure, the movable contact piece 32A is connected to the fixed contact 32B. The movable contact piece 44A of the operation control switch 44 is a fixed contact 44B.
Since the electric motor 6 remains connected to the electric motor 6, the electric motor 6 continues to rotate.

Next, to stop the operation of the blower 7, the movable contact piece 44A of the operation control switch 44 is switched to the fixed contact 44G. As a result, the circuit of the electric motor 6 is opened and the electric motor 6 is stopped.

However, since the blockage completion state detection switch 32 is closed, the timing motor 28 in FIG. 2 rotates counterclockwise and the shutters 171...17. is closed. shutter 17
1...17. When it is completely closed, the link 30 presses the push button 40 of the blockage completion state detection switch 32 to disconnect the movable contact piece 32A in FIG. 6 from the fixed contact 32B, which opens the circuit of the timing motor 28 and stops the timing motor 28. do. At this time, the open i-completed state detection switch 3
1, since the push button 40' shown in FIG. 2 is no longer pressed, the movable contact piece 31A is connected to the constant contact 31B, and the circuit state shown in FIG. 6 is restored.

As shown in the above embodiment, the shutters 171...17. are attached to the cover 16. is closed when the operation is stopped, and opens downward and closes upward when the operation starts. Since the ventilation fan is generally installed at a position higher than the user's head, the shutters 171...17. Even if it is in the open state as above.

The rotation of the blade 5 cannot be seen.

Also, shutters 171...17. Since it is divided into a plurality of pieces, there is little protrusion from the wall surface when the shutter is opened, and overall the center of gravity moves less, resulting in a structure with good stability when installed.

Furthermore, the cover 16 has shutters 17□...17. Since it can be easily attached and detached while remaining integrated with the cover 16, if you wish to clean only the externally exposed portion of the ventilation fan, you can easily do so at an appropriate location, and the shutters 171...171 and the connecting plate 19 can also be removed from the cover 16 if necessary. It is also easy. When more careful disassembly and cleaning is required, the support body 12 can be removed from the main body frame 1 by loosening the thumbscrews 11 on the seats 10, 10' of the main body frame 1.
It is configured so that the blower 7, timing motor 28, and other control parts can be cleaned. In addition, the filter 35 that prevents rainwater and insects from entering the main body frame 1 can also be removed from the frame 33. As mentioned above, the main parts constituting the ventilation fan are structured so that they can be easily removed. .

〔Effect of the invention〕

The present invention is characterized in that, as described above, a plurality of shutters are arranged to open downward and close upward, so that the rotation of the blades is not visible even during operation. Therefore, it looks good not only when stopped but also when driving.
To provide a ventilation fan with excellent interior design.

Next, the cover can be easily removed from the main body while remaining integral with the shutter, and can be washed at an appropriate location. Furthermore, regarding internal dirt, as mentioned above, the decorative frame and support are removable from the main body frame, which is extremely convenient for disassembly and cleaning. In addition, since the shutter is divided into multiple pieces, there is less movement of the center of gravity when opening and closing.

[Brief explanation of the drawing]

Fig. 1 is an external perspective view of the outline of the present invention, Fig. 2 is a vertical sectional view of the state in which it is attached to a wall, Fig. 3 is an enlarged perspective view of the shutter attachment part at the end of the cover, and Fig. 4 is the cover and shutter. FIG. 5 is a front view showing the relationship between the main body frame and the support, and FIG. 6 is an electric circuit diagram. 1...Main body frame, 2...Room wall, 3...Wooden frame, 4...
・Bolt, 5...Blade, 6...Electric motor, 7...Blower, 9...Support, 10.10'...Socket, 11
... Thumbscrew, 12... Decorative frame, 13.13'.
...Protrusion, 14,14'...Recess, 15...Bell mouth, 16...Cover, 171...17,...Shutter, 181...18°18. '...18. ′・
...Pin, 19...Connection plate, 201...20.・・・
・Spindle. 21... Lever receiving part, 22... 22'... Inner surface, 23,... 23. ．． 23. '...23. '...
Hole, 241...24,... Hole, 26... Side wall, 2
71...27. ．． 27□′...27. '... Shutter side plate, 28... Timing motor, 29... Output shaft, 30... Lever, 31... Opening completion state detection switch, 32... Closing completion state detection switch, 33
... Frame body, 34 ... Cylindrical part, 35 ... Filter,
36...Weather cover, 37...Legs, 38...
Oil reservoir part, 39... Lever part, 40.40'... Push button, 41... Electromagnetic switch, 42... Coil, 4
3A. 43B...Contact, 44...Operation control switch, 44
A: Movable contact piece, 44B, 44G: Fixed contact.

Claims (1)

[Claims] 1. A main body frame 1 provided over almost the entire surface of the ventilation opening, a blower 7 and a decorative frame 12 attached to the main body frame 1, a filter 35 provided at the rear of the blower, and a decorative frame 1. Cover 1 having a plurality of shutters 17_1...17_n on the front surface of the frame
6 and an opening/closing mechanism for the shutters 17_1...17_n, and the cover 16 and the blower 7 are detachably attached thereto. 2. The ventilation fan according to claim 1, wherein the shutters 17_1...17_n are detachably attached to the cover 16. 3. The filter 35 has a cylindrical portion 34 fitted into the main body frame 1.
The ventilation fan according to claim 1, wherein the ventilation fan is detachably attached to the ventilation fan. 4. The ventilation fan according to claim 1, wherein the filter 35 is mounted at a predetermined distance from the weather cover 36. 5. The ventilation fan according to claim 1, wherein the shutter opening/closing mechanism including the blower 7 and the timing motor 28 are all integrally attached to the support 9. 6. The ventilation fan according to claim 1, wherein the shutters 17_1...17_n are opened and closed by a timing motor 28 that is linked to a control switch for starting and stopping the operation of the blower 7.