JP3237463U - Switchgear for outdoor gas taps - Google Patents

Abstract

PROBLEM TO BE SOLVED: To obtain an outdoor gas plug opening / closing device capable of reliably closing an outdoor main plug from indoors to outdoors, especially at night and before going to bed. SOLUTION: This is an outdoor gas plug opening / closing device for remotely controlling the opening / closing of a gas plug 1 from indoors, one end of which is fitted into a gas plug 1 and one end of a hole provided at the other end of the handle 2. Is fitted, the other end is inserted into the through hole 4-1 of the pipe 4, the L-shaped wrench 3 fixed to the pipe 4, the socket 5 into which the pipe 4 is inserted, and the hollow hollow that fits the socket 5. It includes a rotating shaft 7 having a cylindrical shape and a motor 6 that rotates the rotating shaft 7 by a predetermined angle. [Selection diagram] Fig. 1

Description

The present invention relates to a gas plug of a type in which a gas plug is rotated by an operation handle to open and close a gas passage, and is particularly suitable for a meter gas plug which is a main plug inserted into an outdoor gas pipe.

Conventionally, a general household gas pipe is piped indoors via a main plug in the middle of a gas pipe that has been raised to the eaves of each household via the underground. A gas water heater is installed on the outdoor side of the gas pipe, and a gas stove or the like is connected in a branch shape via a terminal gas plug and is piped indoors.

Patent Document 1 describes a solenoid valve method as an automatic opening / closing device for a gas plug attached to a wall or floor of a room in order to prevent a gas leak accident or an intentional outgassing accident. In this method, when a gas appliance is impacted by an earthquake or the like, the energization to the electromagnet is cut off and the stop valve is lowered to stop the gas.

Jitsukaisho 61-121348 Gazette

The safest way to use a gas appliance is to close the gas appliance's own plug, close the indoor end gas plug, and then close the outdoor main plug. However, in reality, it is often the best to close the plugs of gas appliances, and not only the terminal gas plugs but also the main plugs are not closed. The one described in Patent Document 1 was not applicable to an outdoor main plug.

The object of the present invention is to solve the above-mentioned problems of the prior art, to make it possible to remotely close the main plug from indoors to outdoors, especially at night and before going to bed, and to easily confirm the open / closed state of the main plug indoors. The purpose is to provide an opening / closing device for an outdoor gas tap.

In order to solve the above problems, the present invention is an outdoor gas plug opening / closing device for remotely controlling the opening / closing of a gas plug from indoors, the handle having one end fitted in the gas plug and the other end of the handle. One end is fitted into the hole, the other end is inserted into the through hole of the pipe, the L-shaped wrench fixed to the pipe, the socket into which the pipe is inserted, and the hollow cylinder that fits into the socket. It includes a rotating shaft shaped and a motor that rotates the rotating shaft by a predetermined angle.

Further, in the outdoor gas plug opening / closing device, it is preferable that the other end of the L-shaped wrench protrudes outward from the through hole and is fixed to the pipe on both sides of the through hole with nuts.

Further, in the above-mentioned outdoor gas plug opening / closing device, it is preferable that the motor is a proportionally controlled damper motor in which the rotation angle can be changed stepwise.

Further, in the above-mentioned outdoor gas plug opening / closing device, it is preferable that the motor is controlled at two positions of ON / OFF control.

Further, in the above-mentioned outdoor gas plug opening / closing device, it is preferable that the pipe is any of a vinyl chloride pipe, a steel pipe, and a stainless steel pipe.

Further, in the above-mentioned outdoor gas plug opening / closing device, it is preferable that the motor is an AC servomotor whose position is controlled.

Further, in the above-mentioned outdoor gas plug opening / closing device, it is preferable that the motor is a stepping motor.

Further, in the above-mentioned outdoor gas plug opening / closing device, it is preferable that the rotational torque of the motor is increased by 20% to 50% with respect to the torque required for opening / closing the gas plug.

Further, in the above-mentioned outdoor gas plug opening / closing device, an open switch that is turned on when the gas plug is open and a closed switch that is turned on when the gas plug is closed are connected to one end of a power source and the other. Is preferably provided with a red LED, the other end of the power supply via the closed switch, and a blue LED, and a confirmation switch connected to the other end of the power supply via the open switch and installed indoors.

Further, in the above-mentioned switchgear for opening and closing an outdoor gas plug, it is preferable that the operation sequence for rotating the rotation axis by a predetermined angle is realized by using a microcomputer.

Further, in the above-mentioned switchgear for opening and closing an outdoor gas plug, it is preferable that the operation sequence for rotating the rotation axis by a predetermined angle is realized by using a logic circuit using a general-purpose logic IC.

Further, in the above-mentioned outdoor gas plug opening / closing device, it is preferable that the operation sequence for rotating the rotation axis by a predetermined angle is realized by using the open switch and the closed switch as limit switches.

According to the present invention, one end is fitted into a handle whose one end is fitted into a gas plug and one end is fitted into a hole provided at the other end of the handle, and the other end is inserted into a through hole of a pipe and fixed to the pipe. It is equipped with a character wrench, a socket with a pipe inserted, a hollow cylindrical rotating shaft that fits into the socket, and a motor that rotates the rotating shaft by a predetermined angle, so you can open and close the gas plug from indoors. It is possible to obtain an opening / closing device for an outdoor gas plug that can be reliably operated remotely.

A side sectional view showing a state in which an opening / closing device for an outdoor gas plug according to an embodiment of the present invention is attached. The plan view which shows the pipe attachment state in FIG. The perspective view which shows the assembly of the socket and the rotating shaft in FIG. The plan view which showed the open / closed state of the opening / closing device of the outdoor gas plug which concerns on one Embodiment. Electrical connection diagram with the drive circuit that controls the drive of the damper motor. Electrical wiring diagram of the device that confirms the opening and closing of the gas plug. Top view showing a conventional outdoor gas plug.

Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings. FIG. 1 is a side sectional view showing a state in which an opening / closing device for an outdoor gas plug is attached to an outdoor gas pipe 10 according to an embodiment. FIG. 7 is a plan view showing a conventional outdoor gas plug. Normally, for an outdoor gas plug, a hexagonal screwdriver is inserted into a hexagonal hole 12 and rotated to loosen a sealing screw (not shown) to make the gas plug 1 rotatable.

Then, the gas is opened by fitting the handle 2 into the gas plug 1 and rotating the handle 2 by a predetermined angle. The gas supplied from the gas pipe 10 is introduced indoors through the supply port 11 provided on the wall of the building by opening the gas plug 1.

In FIG. 1, one end of the handle 2 is fitted into the gas plug 1, and one end of the L-shaped wrench 3 is fitted into the hole 2-1 provided at the other end. The other end of the L-shaped wrench 3 is inserted into the through hole 4-1 of the pipe 4 and protrudes outward. Further, the L-shaped wrench 3 is fixed to the pipe 4 on both sides of the through hole 4-1 by the nut 20.

The pipe 4 is inserted into the socket 5 and extends upward. The damper motor 6 is a motor in which the rotation shaft 7 is rotated clockwise and counterclockwise by a predetermined angle by about 90 degrees, that is, the rotation angle is proportionally controlled by the drive circuit 8 in a stepwise manner. The rotating shaft 7 has a hollow cylindrical shape and fits into the socket 5.

FIG. 2 is a plan view showing an attached state of the pipe 4. A U-shaped clamp 5-1 is fixed to the socket 5, and the pipe 4 is inserted inside the clamp 5-1. The plate 5-2 having an arc shape at the center is inserted into the clamp 5-1 and fitted with the pipe 4 by the nut 21 and tightened. Therefore, the pipe 4 is integrated with the socket 5. The pipe 4 is preferably a vinyl chloride pipe, a steel pipe, or a stainless steel pipe in terms of strength and ease of processing.

FIG. 3 is a perspective view showing the assembly of the socket 5 and the rotating shaft 7. The socket 5 is provided with a flat knurl 5-3 on the circumference and is inserted in the direction of the arrow. Then, the knurls 5-3 of the socket 5 are fitted with the knurls 7-1 of the same flatfish provided on the rotating shaft 7. The drive circuit 8 is supplied with a power supply of AC100V from the power plug 30, converted to AC24V, and rotates the rotating shaft 7 via a speed reducer (not shown). Therefore, when the rotating shaft 7 rotates, the gas plug 1 rotates via the socket 5, the pipe 4, the L-shaped wrench 3, and the handle 2.

FIG. 4 is a plan view showing an open / closed state of an opening / closing device for an outdoor gas plug according to an embodiment. When the handle 2 shown by the solid line is in the open state of the gas plug 1 and the broken line is in the closed state, the open switch 31 is ON and the closed switch 32 is OFF. In the closed state, the open switch 31 is OFF and the closed switch 32 is ON.

When the handle 2 is rotated clockwise by the damper motor 6 from the open state, the gas plug 1 is closed and the close switch 32 is turned on. On the contrary, when the handle 2 is rotated counterclockwise by the damper motor 6 from the closed state, the gas plug 1 is opened and the open switch 31 is turned on.

FIG. 5 shows an electrical connection diagram with a drive circuit 8 that controls the drive of the damper motor 6. 1, 2, and 3 in FIG. 5 indicate terminal numbers. Since the torque required for opening and closing the gas plug 1 is 15 Nm, the rotational torque of the damper motor 6 is large with a margin of 20% to 50%, and is preferably 18 to 23 Nm, preferably 20 Nm.

The damper motor 6 is driven by AC24V, and the opening / closing switch 33, which is a three-way switch, switches clockwise and counterclockwise rotation. For example, if the open / close switch 33 is connected to the terminal number 2 shown by the solid line, the handle 2 rotates clockwise in FIG. 4, and the gas plug 1 is closed. On the contrary, if the open / close switch 33 is connected to the terminal number 3 shown by the broken line, the handle 2 rotates counterclockwise in FIG. 4, and the gas plug 1 is opened.

Further, by providing the open / close switch 33 indoors, the opening / closing of the gas plug 1 can be remotely controlled. The operator does not have to go outdoors before going to bed, and it is easy to close the outdoor main plug. Then, the operator does not have any trouble in executing the operation of closing the main plug. Therefore, closing the main plug is surely performed, and as a safe use of the gas appliance, it is possible to enhance a sense of security especially at night.

FIG. 6 shows an electrical connection diagram of a device for confirming the opening / closing of the gas plug 1. One of the confirmation switches 34 is connected to one end of the power supply and the other is connected to the red LED 40 and the blue LED 41. The red LED 40 and the blue LED 41 are indicator lamps with ultra-high brightness LEDs having a built-in resistor, and can be directly connected to a power supply for AC100V.

The other end of the red LED 40 is connected to the other end of the power supply via the closed switch 32 shown in FIG. 4, and the blue LED 41 is connected to the other end of the power supply via the open switch 31. It is said that the red LED 40 lights up in red and the blue LED 41 lights up in blue, but the opposite may be true, or other colors may be used.

The confirmation switch 34, the red LED 40, and the blue LED 41 are installed indoors. To confirm the opening and closing of the gas plug 1, turn on the confirmation switch 34 indoors. When the gas plug 1 is closed, the red LED 40 lights up, and when the gas plug 1 is open, the blue LED 41 lights up.

As a result, it is possible to easily check the open / closed state of the gas plug 1 which is the main plug at night without going outdoors, and it is possible to enhance the sense of security before going to bed.

In the above description, the rotation of the handle 2 is performed by the proportionally controlled damper motor 6 whose rotation angle can be changed stepwise, but it may be a motor controlled at two positions of ON / OFF control. Further, the damper motor 6 may be position-controlled as an AC servomotor.

Further, the damper motor 6 is driven by a drive circuit 8 that uses a power supply that converts AC100V to AC24V, but a logic circuit using a microcomputer and a general-purpose logic IC realizes an operation sequence in which the rotation shaft 7 is rotated by a predetermined angle. You may. At this time, it is desirable to use a switching power supply, a constant voltage regulator, a three-terminal regulator, or the like to convert to direct current, for example, drive at 24V DC, and a stepping motor may be used instead of the damper motor 6.

The stepping motor is an electric motor whose main feature is that the shaft of the motor rotates by executing a step, that is, it moves by a certain angle. And this function is obtained by the internal structure of the motor, and it is possible to know the exact angular position of the axis simply by counting how the steps were performed without the need for sensors.

Further, the operation sequence for rotating the rotating shaft 7 by a predetermined angle has been described as using a damper motor 6 that rotates by a predetermined angle. However, the control for performing the operation sequence uses a motor that normally rotates and stops, and the open switch 31 and the closed switch 32 shown in FIG. 4 as limit switches (switches used for automatic stop and position detection). Similar operation may be realized.

It should be noted that the operation sequence means that the operation is performed according to a preset operation, and the control by the sequence means the control that sequentially advances each stage of the control according to a predetermined order.

That is, when the handle 2 starts rotating clockwise, the close switch 32 turns ON to stop the rotation of the handle 2, and when the handle 2 starts rotating counterclockwise, the open switch 31 turns ON and the handle 2 rotates. Should be stopped.

1 ... Gas plug 2 ... Handle 2-1 ... Hole 3 ... L-shaped wrench 4 ... Pipe 4-1 ... Through hole 5 ... Socket 5-1 ... Clamp 5-2 ... Plate 5-3, 7-1 ... Knurl 6 ... Damper motor 7 ... Rotating shaft 8 ... Drive circuit 10 ... Gas pipe 11 ... Supply port 12 ... Hexagonal hole 20, 21 ... Nut 30 ... Power plug 31 ... Open switch 32 ... Closed switch 33 ... Open / close switch 34 ... Confirmation switch 40 ... Red LED
41 ... Blue LED

Claims (12)

An outdoor gas tap opening / closing device that remotely controls the opening and closing of gas taps from indoors.
A handle with one end fitted into the gas plug,
An L-shaped wrench fixed to the pipe by fitting one end into a hole provided at the other end of the handle and inserting the other end into a through hole of the pipe.
The socket into which the pipe is inserted and
A rotating shaft having a hollow cylindrical shape that fits into the socket,
A motor that rotates the rotation axis by a predetermined angle,
Switchgear for outdoor gas taps. The switchgear for opening and closing an outdoor gas plug according to claim 1, wherein the other end of the L-shaped wrench is projected outward from the through hole and fixed to the pipe on both sides of the through hole with nuts. The switchgear for opening and closing an outdoor gas plug according to claim 1 or 2, wherein the motor is a proportionally controlled damper motor whose rotation angle can be changed stepwise. The switchgear for opening and closing an outdoor gas plug according to claim 1 or 2, wherein the motor is controlled at two positions of ON / OFF control. The switchgear for opening and closing an outdoor gas plug according to any one of claims 1 to 4, wherein the pipe is any of a vinyl chloride pipe, a steel pipe, and a stainless steel pipe. The switchgear for opening and closing an outdoor gas plug according to any one of claims 1 to 5, wherein the motor is an AC servomotor whose position is controlled. The switchgear for opening and closing an outdoor gas plug according to any one of claims 1 to 5, wherein the motor is a stepping motor. The outdoor gas plug opening / closing device according to any one of claims 1 to 7, wherein the rotational torque of the motor is increased by 20% to 50% with respect to the torque required for opening / closing the gas plug. An open switch that turns on when the gas plug is open,
A closed switch that turns on when the gas plug is closed,
One is connected to one end of the power supply, the other is connected to the red LED, the other end of the power supply via the closed switch, and the blue LED, the other end of the power supply via the open switch, and a confirmation switch installed indoors. When,
The switchgear for opening and closing an outdoor gas plug according to any one of claims 1 to 8, wherein the device is provided with. The switchgear for opening and closing an outdoor gas plug according to any one of claims 1 to 9, wherein the operation sequence for rotating the rotation axis by a predetermined angle is realized by using a microcomputer. The switchgear for an outdoor gas plug according to any one of claims 1 to 10, wherein the operation sequence for rotating the rotation axis by a predetermined angle is realized by using a logic circuit using a general-purpose logic IC. The opening / closing device for an outdoor gas plug according to claim 9, wherein the operation sequence for rotating the rotation axis by a predetermined angle is realized by using the open switch and the closed switch as limit switches.

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