JP2002277009A - Ventilator and pull switch therefor - Google Patents

Abstract

PROBLEM TO BE SOLVED: To obtain a ventilator capable of changing a mounting position of a pull switch simply without fault at a low cost. SOLUTION: The ventilator with a motor driven shutter switches a strong or weak operation by the pull switch 2 and can be driven/stopped. The ventilator comprises connectors 18, 23 for separably connecting electric circuits 20, 21 of the switch 2 and a blower motor 6 and an electric circuit 22 of a geared motor 9. The switch 2 can be mounted at any of right and left sides of a ventilator body. The ventilator further comprises two right and left connectors 23 disposed in parallel in the circuits 20, 21 of the motor 6 and the circuit 22 of the geared motor 9 to always connect a contact 16 for the shutter at the strong or weak operation switching time.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a drawstring switch for a ventilation fan which switches between start / stop and strength of a ventilation fan, and a ventilation fan provided with the drawstring switch.

[0002]

2. Description of the Related Art A ventilating fan in which operation / stop and switching of strength are controlled by a pull string switch is disclosed in Japanese Utility Model Laid-Open No. 3-1007.
As shown in Japanese Patent Publication No. 32, there is an apparatus in which the position of a drawstring switch can be attached to either the right or left lower part of the ventilation fan main body. That is, as shown in FIG.
One connecting rod 32 is provided on both sides of the wind tunnel of the ventilation fan main body 33, so that the pulling string switch 30 and the connecting rod 32 of the opening / closing shutter 31 can be connected by a connecting line or the like, regardless of whether the pulling string switch 30 is mounted on either side. I have. Thereby, even if the installation position of the ventilation fan is in the corner of the room or the like, the drawstring switch 30 can be arranged on the side that is easy to operate, and the ventilation fan has a correspondence with the installation position.

Some open / close shutters are electrically operated. In this case, as shown in FIG. 10, a string switch is not provided, and an operation unit 36 having an on / off switch 34 and a strong / weak switch 35 is provided. Often. The electric circuit of the opening / closing shutter and the power circuit of the blower motor are connected to an on / off switch 34, and power is supplied to both the opening / closing shutter and the blower motor by an on operation, and both the opening / closing shutter and the blower motor are turned off by an off operation. Configuration.

[0004]

In the conventional ventilating fan as described above, the position of the drawstring switch 30 can be changed to any of the right and left positions which is easy to use. 32 are required on both the left and right sides, the manufacturing cost is high, and a mechanical connection operation between the connecting rod 32 and the drawstring switch 30 is required to change the position of the drawstring switch 30. There is a problem that a malfunction occurs in the operation of No. 31. Further, in the case of using an electric opening / closing shutter, the opening / closing of the opening / closing shutter does not coincide with the switching of the strength, so that a simple operation means such as a string switch cannot be applied, so that the operation section 36 is required, and cost is reduced. However, there remains a problem in construction.

SUMMARY OF THE INVENTION The present invention is intended to solve the above-mentioned problems relating to the conventional ventilation fan by focusing on the structure of the drawstring switch. The drawstring for the ventilation fan can be separated by separating the energization of the electric shutter and the switching of the strength of the blower motor. The other purpose is to develop a ventilation fan that can easily change the installation position of the drawstring switch without incurring any cost without any trouble. It is to be simpler.

[0006]

In order to achieve the above object, the invention according to claim 1 is characterized in that, with a single pulling down of a drawstring, a piece electrically connected to a common contact at a predetermined angle rotates to perform strong operation. The rotary string switch for the ventilation fan that switches between the contact point for weak operation and the contact point for weak operation adopts a means to provide a shutter contact that is always electrically connected on the diagonal of the strong operation contact and weak operation contact. I do.

According to a second aspect of the present invention, an electric wire is connected to the strong operating contact, the weak operating contact, the shutter contact, and the common contact in the means according to the first aspect. Means for arranging the end of the connector to be connectable to one connector.

In order to achieve the above object, a third aspect of the present invention relates to a ventilating fan which can switch between high and low operation by a string switch and can also be operated / stopped, by connecting the string switch to an electric circuit on a fan motor side. The connector is detachably connected by a connector. The drawstring switch can be attached to either of the left and right sides of the ventilation fan main body, and the electric circuit on the side of the blower motor employs means for arranging two left and right connectors in parallel.

In order to achieve the above object, the invention according to claim 4 relates to a ventilating fan having an electric shutter which can switch between high and low operation by a string switch and can also be operated / stopped. With a single pulling down of the drawstring, the piece electrically connected to the common contact by a predetermined angle rotates and switches to a contact for strong operation and a contact for weak operation. A means for electrically connecting the shutter contact to the electric shutter is provided on each diagonal of the contact.

In order to achieve the above object, a fifth aspect of the present invention is a connector according to the fourth aspect, wherein the drawstring switch is connected to the electric circuit on the side of the blower motor and the electric circuit on the side of the electric shutter by means of a connector. The drawstring switch can be attached to either the left or right side of the ventilation fan main body, and the electric circuit on the blower motor side and the electric shutter side adopts means for arranging two left and right connectors in parallel.

According to a sixth aspect of the present invention, in order to achieve the above object, a pull string switch according to the fifth aspect is provided.
Means that can be detachably mounted on the main body of the ventilation fan together with the case stored in the case is adopted.

According to a seventh aspect of the present invention, there is provided a ventilation fan main body according to any one of the fifth or sixth aspect, further comprising a mounting plate for detachably mounting a connector on a string switch side. A means for providing is adopted.

[0013]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The present embodiment shown in FIGS. 1 to 8 relates to a ventilation fan comprising an electric shutter 1, a blower and a drawstring switch 2 as an electric system. In this ventilation fan, an electric shutter 1, a blower, and a drawstring switch 2 are provided in an open wind tunnel 3 at both ends, and a ventilation fan body 4 is formed. As shown in FIG. 1, a flange 5 is provided on the front surface of the ventilation fan main body 4, and an orifice (not shown) capable of ventilating around the outside of the flange 5 is detachably attached to the front surface.

As shown in FIG. 2, a blower motor 6 is mounted on the center line of the wind tunnel 3 from a mounting leg 7 and an impeller 8 is mounted on a rotating shaft of the blower motor to constitute a blower. The impeller 8 is rotated at one opening of the wind tunnel 3 by the blower motor 6 to form a ventilation flow from the front side to the rear side in the wind tunnel 3. Electric shutter 1 is wind tunnel 3
A plurality of blades for opening and closing the opening on the back side of the vehicle, a connecting member for rotating and rotating these blades collectively, and a geared motor 9 as driving means for moving the connecting member. The opening on the back side of the wind tunnel 3 is opened by energizing the wind tunnel, and the opening on the back side of the wind tunnel 3 is closed by the cutoff.

The drawstring switch 2 is mounted on one side of the lower part of the flange 5 of the wind tunnel 3. The pullstring pulling-down operation is used to cut off the power to the blower motor 6, switch between strong / weak, and cut off the power to the geared motor 9. (See FIGS. 1 and 7). The main body of the drawstring switch 2 is housed in an insulating case 10 and, by means of a hooking structure 11 and a screw 12 provided on the main body together with the insulating case 10, as shown in FIGS. It can also be attached to.

As shown in FIGS. 4 and 7, the structure of the drawstring switch 2 includes a spring with a predetermined angle (60 degrees in the present embodiment) electrically connected to the common contact by a single pulling down of the drawstring. This is a rotary type in which the biased piece 13 rotates in one direction and switches from an open contact to a contact 14 for strong operation and a contact 15 for weak operation. Each diagonal of the contact 14 for strong operation and the contact 15 for weak operation A shutter contact 16 is provided above each. The shutter contact 16 is always in an electrically connected state, and even if the common contact of the bridge 13 moves between the strong operation contact 14 and the weak operation contact 15, the shutter contact 16
The energized state during is maintained.

As shown in FIG. 3, electric wires 17 are connected to the strong operation contact 14, the weak operation contact 15, the shutter contact 16 and the common contact of the drawstring switch 2, respectively. Reference numeral 18 indicates a connector connectable. To this connector 18, electric circuits 20, 21 of strong notch and weak notch on the blower side and a connector 23 in which the ends of the electric circuit 22 on the electric shutter 1 side are united are connected by connectors. A connector 23 in which the ends of the electric circuits 20 and 21 of the strong notch and the weak notch on the side of the blower and the electric circuit 22 of the electric shutter 1 are integrated.
Are provided in parallel, one is routed on the lower right side of the wind tunnel 3 and the other is routed on the left side, and is mounted on the flange 5 of the ventilation fan main body 4 by cutting and raising or by a separate component. 19
Is connected to the connector 18 of the drawstring switch 2.

In this ventilating fan, the position of the drawstring switch 2 can be easily changed from the right side to the left side or from the left side to the right side by merely connecting the connectors 18 and 23 without operating the mechanical section. No wiring occurs. Since the string switch 2 is configured such that the shutter contact 16 which is always in an electrically connected state is provided on each diagonal of the strong operation contact 14 and the weak operation contact 15, the string is operated by the string operation. A stable shutter operation can be realized without switching off the power to the geared motor 9 without causing any trouble in the operation of the electric shutter 1. According to the drawstring switch 2, the electric shutter 1 can be moved in cooperation with the blower motor 6 without having to provide an operation unit, and a ventilation fan with good workability can be obtained at low cost. Since the connectors 23 of the electric circuits 20, 21, 22 are supported by the mounting plate 19, the disconnection operation of the connector connection is easy. Further, the charging portion of the string switch 2 is covered with the insulating case 10, and even when the position is changed, the insulating case 10 and the string switch 2 are handled, so that the change operation is very simple.

[0019]

According to the first aspect of the present invention, it is possible to obtain a ventilation fan drawstring switch capable of disconnecting energization of the electric shutter and switching of the strength of the blower motor, and removing the operation unit from the ventilation fan with the electric shutter. Will be possible.

According to the second aspect of the present invention, the connection with the electric circuit on the side of the ventilation fan main body is simplified along with the effect according to the first aspect.

According to the third aspect of the present invention, it is possible to obtain a ventilating fan that can easily change the mounting position of the pull string switch without operating the mechanism and wiring operation without increasing the cost.

According to the invention of claim 4, it is possible to obtain a low-cost ventilating fan with good workability without trouble of the electric shutter by operating the drawstring switch.

According to the fifth aspect of the present invention, it is possible to easily change the mounting position of the drawstring switch without operating the mechanism or wiring without causing any trouble in the electric shutter and without increasing the cost.

According to the sixth aspect of the invention, the position of the drawstring switch can be more easily changed together with the effect according to the fifth aspect.

According to the seventh aspect of the present invention, the connector according to any one of the fifth and sixth aspects can be easily attached and detached when the position of the drawstring switch is changed.

[Brief description of the drawings]

FIG. 1 is a front view showing a ventilation fan according to an embodiment.

FIG. 2 is a side sectional view showing a ventilation fan according to the embodiment.

FIG. 3 is a front view showing the drawstring switch of the ventilation fan according to the embodiment together with a connector.

FIG. 4 is a rear view showing the inside of the drawstring switch of the ventilation fan according to the embodiment.

FIG. 5 is a front view showing the drawstring switch of the ventilation fan according to the embodiment together with an insulating case.

FIG. 6 is a side view showing a mounting plate of the ventilation fan according to the embodiment.

FIG. 7 is a circuit diagram showing an electric circuit of the ventilation fan according to the embodiment.

FIG. 8 is a front view showing the ventilation fan according to the embodiment with the position of the drawstring switch changed.

FIG. 9 is a perspective view showing a main part of a conventional ventilation fan.

FIG. 10 is a front view showing a conventional ventilation fan.

[Explanation of symbols]

1 electric shutter, 2 pull string switch, 4 ventilation fan body, 6 blower motor, 9 geared motor, 10 insulating case, 13 pieces, 14 strong operation contact, 15 weak operation contact, 16 shutter contact, 17 electric wire, 18 connector, 19 mounting plate,
20, 21, 22 electric circuit, 23 connector.

Claims (7)

[Claims] 1. A pull-down switch for a rotary fan, wherein a piece electrically connected to a common contact rotates by a predetermined angle at a time of pulling down a pull cord, and switches between a strong operation contact and a weak operation contact. A drawstring switch for a ventilation fan, wherein a contact for a shutter which is always electrically connected on each diagonal of the contact for strong operation and the contact for weak operation is provided. 2. The drawstring switch for a ventilation fan according to claim 1, wherein electric wires are connected to a contact for strong operation, a contact for weak operation, a contact for shutter, and a common contact, and their ends are connected to one connector. Drawstring switch for ventilation fan arranged to be connectable to the connector. 3. A ventilating fan that can switch between high and low operation by a drawstring switch and can also be operated / stopped,
The drawstring switch and the electric circuit on the blower motor side are configured to be connected to each other by a connector so that they can be connected to and separated from each other.The drawstring switch can be attached to either the left or right side of the ventilation fan main body, and is connected in parallel to the electric circuit on the blower motor side. Ventilation fan with two left and right connectors. 4. A ventilator provided with an electric shutter that can switch between strong and weak driving and can be operated / stopped by a string switch, and has an electric shutter that opens and closes.
With a single pulling down of the drawstring, a piece electrically connected to the common contact by a predetermined angle rotates and switches between a strong operation contact and a weak operation contact. A ventilating fan with electrically connected shutter contacts on each diagonal of the operating contacts, and connecting the shutter contacts to the electric shutter. 5. The ventilation fan according to claim 4, wherein the drawstring switch and the electric circuit on the side of the blower motor and the electric circuit on the side of the electric shutter are connected to each other by a connector so as to be connectable and detachable. A ventilation fan that can be attached to either the left or right side of the ventilation fan main body, and two left and right connectors are arranged in parallel in the electric circuits on the blower motor side and the electric shutter side. 6. The ventilation fan according to claim 5, wherein the drawstring switch is housed in a case, and the case can be detachably attached to the ventilation fan body. 7. The ventilation fan according to claim 5, wherein the ventilation fan has a mounting plate for detachably mounting a pull-string switch-side connector on the ventilation fan main body.