JPH02217734A - Ventilation opening with motor-driven shutter - Google Patents

Abstract

PURPOSE:To make it possible to control building temperature and humidity based on natural ventilation to a satisfactory extent by driving a motor, and halting the drive of said motor automatically when a shutter has reached a first position or a second position, and installing a control means capable of halting the drive of the motor at any position while said shutter moves. CONSTITUTION:An on/off cam 27 and a double cam 41 are rotated accompanying the drive of motors 26 and 40 and a shutter 17 starts its movement in the backward direction of a main body 1 of a ventilating opening by the action of an on/off lever 29. During the drive of both motors 26 and 40, the cams 27 and 41 are rotated by half. When the actuation pieces for microswitches MS1 and MS2 have reached a level difference section from smaller-sized sections 27b and 42b to larger-sized sections 27a and 27b, an actuation piece 44 is pressed by the cam side so that the conduction contact of the microswitches MS1 and MS2 may be changed over to a normally closed contact side, which halts the drive of the both moors 26 and 40. A user who is indoors, turns on and off a power supply switch of an actuator 37 so that shutters 17 for an under-floor ventilating opening A and a small hut ventilating opening B may be opened and closed at any angle.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of the Invention The present invention relates to a ventilation opening with an electric shutter, which is installed at a predetermined position in the underfloor space and shed space of an air cycle house and is used to control natural ventilation.

Conventional technology In air cycle houses, a ventilation wall made of a heat insulating board is installed on the inside of the building's exterior wall or under the roof, and the ventilation layer and ventilation wall formed between the exterior wall, etc. and this ventilation wall are The air flow inside the ventilation layer can be improved by introducing natural ventilation into the interior wall cavity on the inside of the room through an underfloor ventilation opening or a shed ventilation opening, or by allowing the air within this ventilation layer to absorb solar heat through the wall or roof. Control the flow and stop of water to adjust the temperature and humidity of the building.

The above-mentioned underfloor ventilation holes or shed ventilation holes used in such air cycle houses are, for example, as shown in Utility Application No. 14.6276 or Sho. 58-162505 filed by one applicant. It has a structure.

In other words, both ventilation holes basically have the same structure, and are attached to a frame and can be opened and closed only in one direction in the front and back direction of the frame by covering the opening of this frame. It consists of an on-off valve mounted in this way and an on-off lever that stops and allows the opening and closing operations of this on-off valve. The on-off valve has an inner end pivoted on the frame and an outer end that opens and closes outward.
It is composed of a pair of valve bodies. Further, the on-off lever has two positions, one where it presses the back surface of the valve body to close the on-off valve, and another where it is parallel to the inner end of the valve body to open and close the on-off valve by rotating a coaxially connected operating lever. Change to a position that allows movement.

When used as an underfloor ventilation opening, this ventilation opening is arranged so that air flows into the building from outside the building, but not vice versa, while when used as a shed ventilation opening, air It is arranged so that water flows from inside the building to outside the building, but not vice versa.

Therefore, in summer, etc., by rotating the on-off lever mentioned above so that it is parallel to the inside edge of the valve body, the on-off valve can be pushed open from the underfloor ventilation hole located on the windward side (positive pressure side) and inside the building. The cool air that has entered the building passes through the ventilation layer and the inner wall cavity and is released outside the building from the shed ventilation opening on the non-windward side (negative pressure side) of the shed space. is discharged. Furthermore, in winter, if the opening/closing lever is rotated to the horizontal position, the opening/closing valves of the underfloor ventilation opening and the shed ventilation opening will not open, thereby preventing warm air from leaking inside the building.

Problems to be Solved by the Invention However, in the case of the above-mentioned ventilation ports, the opening/closing operation of the on-off valve is manually operated by manual operation of the operating lever, so the opening/closing operation of the opening/closing valve is manually operated. The operation must be performed outdoors, which is troublesome.

In addition, even if you attach a string to the control lever and pull it to operate it from a distance, the angle and path of the string will make it difficult to transmit sufficient force, resulting in poor operability and the possibility of not opening or closing the valve. Unable to confirm extent.

For this reason, it is difficult to close and open the ventilation openings frequently or quickly in response to the natural conditions outside, so it is difficult to adjust the temperature and humidity of the building through natural ventilation, which is the purpose of air cycle houses. results that cannot be achieved.

Furthermore, with conventional ventilation ports, the opening angle of the on-off valve is determined by the strength of the airflow, making it impossible to provide an air cycle home that fully controls natural ventilation. In view of these points, the invention has been developed to allow you to control the opening/closing operation and closing of the on-off valve at any time without going outside, with good operability, and to adjust the opening/closing angle of the on-off valve. Another object of the present invention is to provide a ventilation opening with an electric shutter that can effectively control air flowing out from inside a building.

Means for Solving the Problems In order to achieve the purpose of air ventilation, the ventilation port of the present invention has a main frame of the ventilation port with an opening of a required area penetrating in the front and back direction, and a lightweight heat insulating material such as expanded styrene. an on-off valve that is formed in a shape to close the opening and is pivoted so as to be able to open and close in the rear direction of the vent body frame; , a first position where the inner surface presses the on-off valve and closes it, and a second position where the inner surface presses the on-off valve to close it, and a second position where the inner surface allows the on-off valve to open and close at a desired angle.
and a shutter that rotates between the two positions.

an actuating member that causes the shutter to rotate as described above; a motor that provides driving force to the actuating member; a control means for stopping the motor and also for stopping the motor at any position during the transition of the shutter from the first position to the second position or from the second position to the first position; The present invention is characterized in that it includes an operation means for operating the control means, and a display means for displaying the opening/closing angle and other states of the shutter in conjunction with the opening/closing operation of the shutter.

Further, in the present invention, the shutter moves from the first position to the second position.
A lamp circuit may be provided in which different lamps are turned on when the position is reached, or when the position is reached from the second position to the first position.

Further, regarding the above-mentioned operating member, control means, and operation means in the present invention, a cam is fixed to the drive shaft of the motor, and the base end of the opening/closing lever whose tip is pivotally supported on the inner surface of the shutter is pivoted to the cam. The actuating piece of the microswitch is brought into sliding contact with the cam surface of the cam, and when the contact of the three-contact type power switch is closed, the motor is driven to open or close the shutter, and the shutter opens or closes. The structure is such that when the first position or the second position is reached, the contacts of the microswitch are switched by the cam surface and the operation of the motor is stopped. motor and
A cam fixed to the drive shaft of the motor, a disc with an indicator on its surface indicating the opening/closing angular position of the shutter, the tip of the disc was pivoted to the disc, and the base end was pivoted to the cam. An actuating piece is in sliding contact with the actuating arm and the cam surface, and the second
The drive motor may be configured with a second microswitch for driving and stopping the shutter opening/closing drive motor in synchronization with the shutter opening/closing drive motor.

Further, the above-mentioned on-off valve is configured such that both upper sides of the on-off valve are supported by support pieces made of band-shaped rubber material at the opening of the vent main body, or the on-off valve is configured such that the opening/closing operation is performed by the rotation of the shutter. When permitted, the ventilation opening body frame may be tilted toward the back side, and the lower part of the opening may be slightly opened, and the shutter may be supported by a lightweight material such as foamed styrene on its inner surface. A heat insulating material may be attached. 6 Function This ventilation hole is installed under the floor or in the attic with a specified positional relationship. When the control means is actuated by operating the operating means provided indoors, the motor is driven and the shutter is rotated via the actuating member. As a result, the on-off valve is released from its closed state, and the on-off valve of the ventilation port located on the windward side opens due to positive pressure, allowing ventilation.

Since the rotation angle of the shutter is displayed by a display means disposed near the operating means, the rotation can be stopped at a desired position by turning off the operating means while checking this. Therefore, by controlling the stop position of the shutter using each of the above-mentioned means, the opening/closing operation range of the on-off valve can be regulated, and the amount of ventilation can be adjusted.

When the shutter is completely opened or completely closed, the control means automatically stops energizing the motor. Further, when a lamp circuit is provided, the lamp circuit is activated at the same time as the motor stops driving to indicate the open or closed state of the shutter.

In this way, the user can easily permit and stop the opening/closing operation of the on-off valve and adjust the amount of ventilation during the opening/closing operation of the on-off valve while staying indoors.

Embodiment Figures 1 to 4 show the structure of the main body of a ventilation opening according to an embodiment of the present invention, and Figures 1 and 2 are perspective views of the external appearance when this is used as an underfloor ventilation opening. The figure and its exploded perspective view, FIGS. 3 and 4, show an external perspective view and an exploded perspective view when this is used as a shed ventilation opening.

Reference numeral 1 in the figure represents a ventilation port body, and a front panel 2 having a large number of ventilation slits 2a on its surface is attached to the front surface of this ventilation port body 1. and.

In the case of an underfloor ventilation opening, the back side of the ventilation opening main body 1 is attached to a rectangular frame by a frame 3 at a predetermined position on the underfloor foundation. On the other hand, in the case of a shed ventilation opening, the back side of the ventilation opening is located on the outside of the building, so the first step is to prevent the back panel 5, which is provided to prevent foreign matter from entering from outside, from coming into contact with the shutter when it is opened. Therefore, secondly, in order to prevent the on-off valve from being blown open by wind blowing up from below on the outside of the building, it is necessary to provide a distance between the ventilation port main body 1 and the back panel, and a hood 4 is provided.

To explain the ventilation port main body 1 along the exploded perspective views shown in FIGS. 5 and 6, 6 is a ventilation port main body frame, and a flange portion 6a for mounting is provided protruding from the outer periphery of the frame. is on-off valve 9
An opening 7 in which the shutter 5 is housed, and a housing 8 for a shutter drive control mechanism to be described later are provided. The on-off valve 9 housed in the opening 7 is made of a lightweight and highly insulating material such as polystyrene foam and is formed into a shape necessary to close the opening 7, and is made of a band-shaped rubber material on both sides of the upper part. The lower end of the support piece 10 is fixed. The upper end of the support piece IO is fixed to a mounting plate 11 that projects from the inner wall of the opening 7, and the opening and closing of the on-off valve 9 toward the back side of the frame body is ensured by bending the middle part of the support piece that is not fixed. do.

In the figure, reference numeral 12 is a support piece fixing plate attached to the valve 9 side, 13 is a support piece holder thereof, 14 is a support piece tightening plate, and 15 is a support piece holder that is paired with the support piece attachment plate II. be. The outer end of the support piece fixing plate 12 on the side of the valve 9 protrudes outward, and a gasket (not shown) is attached to the inner surface thereof.
A packing 16 is also attached to a corresponding step provided on the inner wall of the opening 7.

A shutter 17 covers the back side of the body frame on the side where the on-off valve 9 performs opening/closing operations, and is composed of a lid I8 and a heat insulating plate 19 attached to its inner surface. This shutter 17 has a projecting piece 20 provided at the upper end of one side of the lid body 18 at a corresponding position on the back of the frame.
The upper end of the other side of the lid body 18 is pivotally supported by a sprig 21 at a corresponding position on the back surface of the frame via a pin 22 which is urged outward.

It can be opened and closed only from the rear of the back of the main body frame 6.

The heat insulating board 19 is made of the same material as the on-off valve 9, and has a thickness set so that a part of the surface of the insulating board 19 presses against the outer surface of the on-off valve 9 when the shutter 17 is completely closed. There is. Furthermore, a notch 23 is formed at a predetermined position on the plate surface of the heat insulating plate 19, through which the tip of the opening/closing lever 29 is inserted. It is pivotally supported in the recessed portion 24 via a pin (not shown). As a result, the shutter 17 opens and closes in accordance with the operation of the opening/closing lever 29.

In addition, if the on-off valve is supported in such a way that it is slightly tilted toward the back and the lower part of the opening is open when the shutter is open, even weak airflow that cannot push the on-off valve open can be prevented. Air can be circulated through the lower part of the opening, allowing ventilation within the building even during times such as summer when airflow is almost stagnant.

Reference numeral 25 denotes a partition plate (see Fig. 6) that divides the inside of the drive control mechanism housing 8 into left and right sides and on which various drive members are attached. The drive shaft 26a of the motor 26 protrudes to the left in the figure.
A cam 27 for opening and closing is fixed to the tip. The cam is disc-shaped and has approximately 1/1/1 circumference.
The support shaft 28 has two large diameter portions 27a and a small diameter portion 27b approximately 1/2 the distance, and a support shaft 28 for pivotally supporting the base end of the opening/closing lever 29 is provided at a predetermined position on the outer panel surface. The opening/closing lever 29 is a cam 27
It moves forward and backward in the direction of the back of the storage unit as the unit rotates.

Reference numeral 30 denotes a microswitch mounting portion provided on the left side of the partition plate 25 in the figure at a position close to the outer peripheral surface of the cam.

The operating piece of the first microswitch MSI mounted here is always in sliding contact with the outer periphery of the cam 27. Furthermore, as shown in the circuit diagram of FIG. 7, this microswitch MS1 has three contacts, the first contact (common contact COM) is connected to one terminal drawn out from the motor 26, and the second The contact (normally closed contact NG) is connected to the second terminal of the plug 32 constituting the 3-pin outlet for connection, and the third contact (normally closed contact No.) is connected to the first terminal of the plug 32. The other terminal of the motor 26 is connected to the third terminal of the plug 32 described above. When the actuating piece is in contact with the small diameter portion 27b of the cam, the first contact of the microswitch MSI is electrically connected to the second contact, and the cam surface that the actuating piece contacts changes from the small diameter portion 27b to the large diameter portion 27a. When switched, the first contact becomes the third
Conducts with the contact point.

In FIG. 1, the reference numeral 8a is a motor cover, and the reference numeral 33 is a storage section with an opening/closing lid 34 for the plug 32, which is provided at the lower part of the drive control mechanism storage section 8.

FIG. 8 shows an operating device 37 and a relay box 35 for remotely controlling the drive motor 26 of the shutter 17 described above.

The relay box 35 houses a jack 36 that pairs with the plug 32 of the connection outlet described above, and a 3-pin terminal board wired from the operating device 37, and the terminal board and the terminals of the jack 36 correspond to each other. connected to. Although the relay box 35 is installed at an appropriate position apart from the ventilation port main body 1, the operating device 37 and the terminal of the drive control mechanism of the ventilation port main body 1 may be directly connected without providing this.

As seen in FIG. 9 showing the structure of a part of the display means housed in the operating device 37 and FIG. 10 showing the circuit diagram, the operating device 37 includes a three-way switch that performs ON-OFF-ON operations within the casing 38. A contact type power supply wave type switch SW, and a second motor 40 that is driven in synchronization with the drive motor 26 for opening/closing the shutter 17 and rotating a display plate 39 for displaying the opening/closing angle of the shutter 17. , the drive shaft 4 of this motor 40
A double cam 41 fixed at 0a, two second and third microswitches MS2) MS3 switched and operated by this cam 41, and three indicator lamps L1 and L2.
) L3, and is fixed at an appropriate position within the house.

The double cam 41 has two stages of cam circumferential surfaces in the axial direction, as seen in FIGS. 9 and 11 to 13. One peripheral surface 42 has a large diameter portion 42a and a small diameter portion 42b, similar to the opening/closing control cam 27 of the shutter 17 described above,
The actuating piece 44 of the second microswitch MS2 is in sliding contact with the second microswitch MS2, and the other peripheral surface 43 is formed to have a larger diameter than the negative peripheral surface 42, and a third microswitch is located at a 180 degree opposite position. A recess 43a is formed in which the sliding end portion of the operating piece 45 of the switch MS3 is received. When the sliding contact portion of the actuating piece 44 of the second microswitch MS2 is located at the stepped portion of the one cam surface 42, the actuating pieces of the third microswitches M and S3 The sliding contact portion of 45 is the other cam surface 43
It is disposed and fixed on the substrate in such a positional relationship that it comes into contact with the recess 43a of.

The opening/closing angle display plate 39 of the shutter 17 is provided with straight fingers 39a on its surface, and the center of the opening/closing angle display plate 39 is provided with a portion 4 on the board.
6, and the other end of an arm 47, one end of which is pivotally supported in a hole provided in the upper surface of the double cam 4I, is pivotally supported at a suitable position on the plate surface.

Each of these members is wired as shown in the circuit diagram of FIG. 1O. That is, the 2-bin terminal board 4 to which the power cord is connected
A fuse is connected to one terminal of 8, and its output terminal is 3
It is connected to a third terminal of a three-pin terminal board 52 on the output side via a third main line 49 of the three main lines. Also, above 2
The other terminal of the pin terminal board 48 is connected to the third contact of the waveform switch SW described above. Of the other two contacts of the wave type switch SW, the first contact is connected to the first terminal of the three-bin terminal board 52 via the first main line 51, and the second
The contact is connected to the second terminal of the 3-pin terminal board 52 via the second main line 50.
connected to the terminal.

A first control line 53 is connected to the first main line 51, and after the lamp L1 is connected to this control line 53, it is connected to the second contact (normally closed contact NG) of the third microswitch MS3. has been done. A second control line 54 is connected to the second main line 50, and after the lamp L2 is connected in the middle, this control line 54 is connected to the control line [53] between the lamp L1 and the second contact of the third microswitch MS3. It is connected. third lord, 4
A third control line 55 is connected to 9.49, and the other end of this control line 55 is connected to the first terminal (common terminal COM) of the second microswitch MS2.
3 is connected.

The second motor 40 has one terminal connected to the third main line 49, and the other terminal connected to the third control line 55 between the lamp L3 and the common terminal C0M of the second microswitch MS2.
It is connected to the.

The second contact of the second microswitch MS2 (normally closed contact N
C) is connected to the second main line 50, and the third contact (normally closed contact No.) is connected to the first main line 51.

The common terminal C○M of the third microswitch MS3 is the third
It is connected to the main line 49 of.

The operation panel 56 on the front surface of the casing of the operation device 37 is formed with window holes 57 to 61 through which the power waveform switch SW, the display board 39, and three lamps L1 to L3 are exposed (see FIG. 14). reference).

The opening and closing operations of the shutter 17 based on the circuit configurations of FIGS. 7 and 10 will be explained based on the time chart of FIG.
When turned on to the open operation side, the second terminal of this switch SW becomes conductive, and due to the conduction between the common terminal of the first microswitch MSI and the second microswitch MS2 and the normally closed contact (see Figure 11), the second terminal of the switch SW becomes conductive. The two motors 26.40 start driving synchronously.

At this time, for example, an orange lamp L3 connected to the third control line 55 is lit.

As both motors 26 and 40 are driven, the opening/closing cam 27 and the double cam 41 rotate, and the shutter 17 begins to move toward the back of the vent body 1 due to the operation of the opening/closing lever 29. At the same time, the display board 39 moves along with this. rotate in sync,
The rotation state is displayed through the display window 58 of the operation panel 56.

While both motors 26.40 are being driven, the operating pieces of the first microswitch MSI and the second microswitch MS2 are operated by the opening/closing cam 27 and the small diameter portion 27b of the double cam 41.
42b, the common terminal and the normally closed contact are maintained in a conductive state (see FIG. 12). Both cams 2
7.41 rotates half a turn, both microswitches MSI and MS
The second actuating piece is the /h diameter portion 27b, 42 of both cams 27.41.
When you reach the step part where you move from b to the large diameter parts 27a, 42a,
The actuating piece 44 is pushed by the cam surface and both microswitches MS
Switch the conduction contact of I, MS2 to the normally closed contact side (13th
(see figure). As a result, the electrical connection to both motors 26, 40 is cut off, and the motors 26, 40 are stopped. At this time, the tip actuating portion of the actuating piece 45 of the third microswitch MS3 is received again in the opposing recess 43a, the lamp L2 is turned on via the second control line 54, and the shutter 17 is opened. Indicates the condition.

To close the shutter 17, push the power switch Sw in the opposite direction to make the first terminal conductive.

The motor 26.40 is re-driven via the above-mentioned conducting contacts of fJl and the second micro-sinch MSI, MS2, and the same operation as described above is repeated, thereby closing the shutter 17 and closing the display plate 39. The indicator also moves in synchronization with this, and when the shutter 17 is completely closed, the first and second microswitches MS
I and MS2 are switched to the normally closed contact side by both cams 27.41. At this time, since the power switch SW has the first terminal in the conductive state as described above, the motor 26
．． 40 is stopped and the lamp L3 is turned off.

Also, at this time, the normally closed contact of the third microswitch MS3 is made conductive, so that the ventilation opening configured like a Yuko that turns on the lamp L1 is connected to the underfloor ventilation opening A, as shown in FIG. In this case, the on-off valve 9 and the shutter 17 should be located on the side of the underfloor space, and in the case of a shed ventilation opening B, the on-off valve 9 and the shutter 17 should be placed at appropriate locations in the building so that they face the outdoors. be done. The user stays indoors and turns the power switch Sw of the controller 37 ON/OFF to close the shutter 17 of the underfloor ventilation opening and the cabin ventilation opening.
can be opened and closed at any angle. Operator 37ba,
You can have one for each vent so that all the vents work together, separate them into underfloor and shed vents, or control each vent independently. Also good.

Also, when the shutter 17 is opened (see Figure 17)
The operation of the on-off valve 9 is performed by natural ventilation as in the applicant's prior art described above.
Rubber material is used for each of the shutters 17, and when the shutter 17 is in its closed state, the inner surface presses the on-off valve 9 (see Fig. 16), so when the on-off valve 9 is in operation or closed, it does not make a flopping sound. This eliminates the need for people to stand up the room, allowing for quiet ventilation.

Furthermore, this ventilation hole is not only an underfloor ventilation hole A or a shed ventilation hole B, but also, for example, by installing an underfloor ventilation hole A′ and a shed ventilation hole B′ that are the same as a shed ventilation hole at the top and bottom of the room, respectively. As shown in Figure 18, ventilation between structural frames (through ventilation layers, etc.) in air cycle houses (
In addition to indoor natural ventilation (left side in the figure)
This can also be done.

Effects of the Invention As described above, according to the present invention, there is a first position in which the inner surface presses the on-off valve to close it, on the vent body frame at the rear in the opening/closing direction of the on-off valve made of a lightweight heat insulating material; A shutter is installed that rotates between a second position and a second position that allows the opening and closing operation of the on-off valve and opens to a required angle, and the rotation of the shutter is controlled by an operating means provided in the room via a shutter drive control means. Since the valve is controlled, the closing and opening/closing operations of the on-off valve can be centrally controlled indoors with good operability without going outside.

Further, since the opening/closing operation range of the on-off valve can be regulated by the inner surface of the shutter in accordance with the rotation angle of the shutter, the amount of ventilation can be easily adjusted. Furthermore, since the rotation angle state of the shutter is clearly indicated by the display means, the shutter can be stopped rotating at any position, and the above-mentioned ventilation amount can be reliably adjusted.

Furthermore, since the rotation of the shutter is performed by electrical control of a motor that provides driving force, it is not possible to perform manual control by attaching a string or the like to the operating lever in the above-mentioned prior art and pulling it from a distance. In comparison, the closing of the ventilation port and the switching of the opening/closing operation of the on-off valve can be done frequently and quickly.

According to the present invention, the above effects are combined, and the annual (seasonal)
Adequate control of natural ventilation during the day allows appropriate and rapid adjustment of temperature and humidity within the building.

[Brief explanation of the drawing]

Figures 1 and 2 are an external perspective view and an exploded perspective view of a ventilation opening according to an embodiment of the present invention when used as an underfloor ventilation opening, and Figures 3 and 4 show this as an underfloor ventilation opening. An external perspective view and an exploded perspective view when in use, Figure 5 is a partially exploded perspective view of the ventilation port body seen from the back, Figure 6 is a partially exploded perspective view of the main body viewed from the front, and Figure 7 is the same. A circuit diagram of the control part of the shutter installed in the ventilation opening, Figure 8 is an external view of the operating device (right side in the figure) and relay box (left side in the figure), and Figure 9 is the display built into the operating device. FIG. 10 is an exploded perspective view of essential parts showing an example of the means, and FIG. 10 is a circuit diagram inside the operating device. 11 to 13 are explanatory diagrams showing the operating state of the display means in FIG. 9, FIG. 14 is a front view showing the operation panel of the operating device, and FIG. 15 is an operation of each member constituting the ventilation port. A time chart showing the status, Figures 16 and 17 are cross-sectional views showing the opening and closing status of the shutter and on-off valve of the ventilation port,
FIG. 18 is an explanatory diagram showing the flow of air inside a building to which this ventilation port is installed. l: Ventilation vent body, 2: Front panel, 3: Mounting frame, 5:
Rear panel, 6: Ventilation main frame, 7: Opening, 9: Opening/closing valve, 10: Support piece, 17: Shutter, 18: Lid, 19
: Heat insulation plate, 26: Shutter opening/closing drive motor, 27:
Cam, 27a; large diameter part, 27b = small diameter part, 29: opening/closing lever, 37: operating device, 39: display board, 39a: index, 40
: second motor, 41: double cam, 42a: large diameter part,
42b: Small diameter portion, 43a: Recess, 47: Arm, 57~
61: Window hole, MSI: 1st microswitch, Mg2: 2nd microswitch, Mg3: 3rd microswitch, SW: Power switch, A: Ventilation vent under the floor, B: Ventilation vent in the shed, A' second room Lower ventilation opening, upper ventilation opening in B'2 room Fig. 1-16 M51 No. Fig. fig. Target of correction

Claims (7)

[Claims] (1) A vent body frame with an opening of a required area penetrating in the front-rear direction, and a lightweight insulating material such as expanded styrene formed in a shape to cover the opening, and extending in the rear direction of the vent body frame. an on-off valve that is pivoted so that it can be opened and closed; a first position that is attached to the vent body frame behind the on-off valve in the opening and closing direction and whose inner surface presses the on-off valve to close it; The second one opens to the required angle by allowing the opening/closing operation of the
a shutter that rotates between the first position and the first position; an actuating member that causes the shutter to rotate as described above; a motor that provides driving force to the operating member; The motor is automatically stopped when the second position is reached, and the motor is also stopped at any position during which the shutter moves from the first position to the second position or from the second position to the first position. a control means for enabling the shutter to be stopped; an operating means disposed within the building for activating the control means; and a display for displaying the opening/closing angle and other states of the shutter in conjunction with the opening/closing operation of the shutter. A ventilation opening with an electric shutter, characterized by comprising means. (2) In the ventilation opening with an electric shutter according to claim 1, when the shutter reaches the second position from the first position, or when the shutter reaches the first position from the second position. A ventilation opening with an electric shutter, characterized in that it is equipped with a lamp circuit in which different lamps are lit respectively. (3) A cam is fixed to the drive shaft of the motor, the proximal end of an opening/closing lever whose tip is pivoted to the inner surface of the shutter is supported on the cam, and the operating piece of the microswitch is attached to the cam surface of the cam. When the contacts of the three-contact type power supply switch are closed, the motor is driven to open or close the shutter, and when the shutter reaches the first position or the second position. 2. The ventilation opening with an electric shutter according to claim 1, wherein the cam surface switches the contacts of the microswitch and stops the operation of the motor. (4) The display means includes a second drive motor, a cam fixed to the drive shaft of the motor, a disk provided with an index indicating the opening/closing angular position of the shutter on its surface, and a tip of the disk. and an actuating arm whose base end is respectively pivotally supported by the cam, and an actuating piece having sliding contact with the cam surface, and driving the second drive motor in synchronization with the opening/closing drive motor of the shutter;
2. The ventilation opening with an electric shutter according to claim 1, further comprising a second microswitch for stopping the ventilation opening. (5) The electric shutter according to claim 1, wherein the opening/closing valve is supported on both sides of its upper part by support pieces made of band-shaped rubber material at the opening of the ventilation port body frame. Ventilation vents. (6) The opening/closing valve is tilted toward the rear side of the vent body frame when the shutter rotates and opening/closing operation is permitted;
6. The ventilation opening with an electric shutter according to claim 1, wherein the ventilation opening is supported so that the lower part of the opening is slightly opened. (7) The ventilation opening with an electric shutter according to claim 1, wherein the shutter has a lightweight heat insulating material such as styrene foam attached to its inner surface.