JP2022027831A - Distribution board - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a distribution board that makes it easy to visually recognize the state even when a seismic sensor is stopped.

SOLUTION: A distribution board includes a seismic sensor 1 that detects an earthquake that exceeds a set seismic intensity and outputs an earthquake occurrence signal, and on the lower surface of a distribution board housing 30a, either a power switch 23 for turning on/off the power of the seismic sensor 1 and a setting switch 25 for turning on/off a seismic function in the seismic device 1 is provided.

SELECTED DRAWING: Figure 3

COPYRIGHT: (C)2022,JPO&INPIT

Description

The present invention relates to a distribution board provided with a seismic sensor that shuts off an earth-leakage circuit breaker or the like when an earthquake of a predetermined seismic intensity or higher occurs.

Conventionally, there is a seismic sensor that is installed in a distribution board and detects an earthquake with a predetermined seismic intensity or higher and shuts off an earth-leakage circuit breaker.
For example, the seismic sensor of Patent Document 1 first outputs an earthquake occurrence signal when it detects shaking of a predetermined seismic intensity or higher, and then outputs a cutoff signal for shutting off the earth-leakage circuit breaker after a certain period of time has elapsed.

Japanese Unexamined Patent Publication No. 2016-211920

Although such a conventional seismic sensor is provided with a test button for testing the operation, it does not have a power switch because it does not need to be stopped. Therefore, construction work was carried out around the distribution board, and if the shaking caused by the construction was equal to or higher than the set seismic intensity, the seismic sensor would operate and a power outage might occur.
Therefore, if a power switch is provided in the seismic sensor and the power is turned off during construction, the problem of operation due to vibration due to construction can be solved, but since the seismic device is installed in the distribution board, construction work It is troublesome for a person to operate the power switch because it is an operation inside the distribution board, and it is difficult to check the state of the power switch, so if you forget to turn it on after the construction is completed, it will be left as it is and an earthquake will occur later. However, there was a problem that the situation that it did not work occurred.

Therefore, in view of such a problem, it is an object of the present invention to provide a distribution board in which the state can be easily visually recognized even if the seismic sensing device is stopped.

In order to solve the above problems, the invention of claim 1 is a distribution board provided with a seismic sensor that detects an earthquake having a seismic intensity higher than a set value and outputs an earthquake generation signal. It is characterized in that either a power switch for turning on / off the power of the seismic device and a setting switch for turning on / off the seismic function in the seismic device are provided on the outer surface of the housing.
According to this configuration, even if the power switch of the seismic sensor or the setting button for stopping the seismic mechanism is provided, the switch is provided on the outside of the distribution board housing, so that the switch is turned on / off without opening the distribution board. Can be grasped and confirmed easily. By providing a power switch or setting switch for the seismic sensor, it is possible to turn off the seismic sensor so that it does not malfunction when performing construction or work that involves vibration around the distribution board, and vibration of the construction. This can prevent a situation where a sudden power failure occurs.

The invention according to claim 2 is characterized in that, in the configuration according to claim 1, the power switch or the setting switch is provided on the lower surface of the distribution board housing.
According to this configuration, since the power switch or the setting switch is provided on the lower surface of the distribution board, the switch of the distribution board installed above the wall surface is easy to see and the state of the seismic sensor is easy to grasp.

According to the distribution board according to the present invention, even if the power switch of the seismic sensing device or the setting button for stopping the seismic sensing mechanism is provided, the switch is provided on the outside of the distribution board housing, so that the distribution board does not need to be opened. It is easy to grasp the on / off status and check it. By providing a power switch or setting switch for the seismic sensor, it is possible to turn off the seismic sensor so that it does not malfunction when performing construction or work that involves vibration around the distribution board. This can prevent a situation where a sudden power failure occurs.

It is a functional block diagram which shows an example of a seismic sensor. It is a perspective view which shows the appearance of a seismic sensor. It is an external view of a distribution board provided with a seismic sensor, (a) is a front view, and (b) is a bottom view. It is a functional block diagram which shows the other form of a seismic sensor.

Hereinafter, embodiments that embody the present invention will be described in detail with reference to the drawings. 1 and 2 show an example of a seismic sensor, FIG. 1 is a functional block diagram, and FIG. 2 is a perspective view.
As shown in this figure, the seismic sensor 1 includes an acceleration detection unit 11 provided with an acceleration sensor for detecting vibration, an LED 12 for notifying light emission, a buzzer 13 for notifying a sound, and an intensity changeover switch 14 for changing the seismic intensity. Time changeover switch 15 for setting the delay time for outputting the cutoff signal, reset / test / stop button (hereinafter referred to as "function button") 16 for reset / test operation and stopping the function, and the function is stopped. Notification time changeover switch 17 to switch the notification time, return time changeover switch 18 to set the automatic recovery time, output terminal 19 to output the earthquake occurrence signal, input terminal 20 to reset from the outside, to shut off the breaker It is provided with a cutoff signal output unit 21, a power supply unit 22, a power switch 23, and a seismic sensor CPU 24 for controlling the seismic sensor 1 to output the delay signal of.

An alarm unit 3 having a sounding function such as a buzzer is connected to the output terminal 19, and the alarming operation is performed when an earthquake occurs.
An operation switch 4 for resetting is connected to the input terminal 20, and the operation of the operation switch 4 resets the seismic sensor 1 during the operation of outputting the earthquake occurrence signal and stops the alarm.
The main breaker 5 of the distribution board is connected to the cutoff signal output unit 21, and the cutoff signal is received from the cutoff signal output unit 21 to perform a cutoff operation. Specifically, a pseudo leakage current flows through the cutoff signal output unit 21, and the main breaker 5 operates to cut off the leakage.
As shown in FIG. 2, the seismic sensor 1 is provided with a bus bar connecting portion 7, and is connected to the bus bar 6 in a state of being assembled to the distribution board to supply power.

The function button 16 functions as a reset button when operated during seismic operation to stop the operation, and functions as a test button for outputting a cutoff signal when operated during standby. Further, when it is pressed and held for a long time, it functions as a function stop button for stopping the earthquake detection function.

The operation of the seismic sensor configured as described above is as follows. First, the earthquake detection operation will be described.
The acceleration detection unit 11 outputs a signal corresponding to the acceleration. In response to this signal, the seismic sensor CPU 24 performs the following control. The seismic intensity is determined from the output signal of the acceleration detection unit 11, and if it is determined that the seismic intensity is higher than the seismic intensity set by the intensity changeover switch 14 (for example, seismic intensity 5 upper), an earthquake occurrence signal is output and the LED 12 is turned on or blinks. Then, the buzzer 13 is sounded.
Further, an earthquake occurrence signal is output from the output terminal 19, and the alarm unit 3 emits an alarm sound by this signal.

Then, a time (for example, 3 minutes) set by an internal timer (not shown) is counted according to the output of the earthquake occurrence signal, and when that time elapses, a cutoff signal is output from the cutoff signal output unit 21, and the main breaker 5 is set. Cut off operation.
This alarm operation is reset by the reset button operation (operation of the function button 16), and returns to the standby state.

Next, a case where the function button 16 functions as a stop button will be described. When the function button 16 is pressed and held for 2 seconds in the standby state in which the seismic sensor 1 does not output an earthquake occurrence signal, the seismic sensor CPU 24 determines that the function has been stopped and has an earthquake detection function. To stop. That is, the cutoff signal is not output even if the shaking of the set seismic intensity or higher is detected.
At the same time, the first timer 24a and the second timer 24b are started. In addition, the LED 12 is made to emit light in a color or a light emitting form different from the earthquake detection operation such as blinking to notify that the function has stopped.

The first timer 24a is set to, for example, 72 hours (3 days), and the function stop is continued until this time elapses. Then, when the time of the first timer 24a is up, the function is restored without waiting for the restoration operation, and the seismic cutoff operation is started.
Further, the second timer 24b is set to, for example, 12 hours, and when this time elapses, the buzzer 13 sounds for a certain period of time to notify that the function is stopped. Then, the second timer 24b starts counting again, and when 12 hours have passed again, the buzzer 13 sounds.
When the function button 16 is pressed again while the function is stopped, the function is restored and the LED 12 is turned off.

In this way, even if the function button 16 is operated to stop the function of the seismic sensor 1, it automatically returns after a certain period of time, so that it is possible to prevent a situation in which the return operation is forgotten and the device does not function when an earthquake occurs. Further, after the function stop operation of the seismic sensor 1 is performed, if the return operation is not performed even after a certain period of time elapses, an alarm sound is sounded to notify the alarm, so that it is possible to recognize that the function is stopped.
Further, since the time for returning to the function stop state and the time for notifying that the function stop state can be set can be set, it is preferable that the time can be set according to the convenience of the user.
In addition, by providing the function button 16 having a plurality of functions with a function as a function stop button, it is not necessary to newly provide a function stop button.

3A and 3B show an external view of a distribution board 30 provided with the seismic sensor 1, where FIG. 3A is a front view and FIG. 3B is a bottom view. As shown in this figure, the power switch 23 of the seismic sensor 1 is provided on the bottom surface of the distribution board housing 30a so that the state of the power switch 23 can be easily confirmed from the surroundings.
In this way, even if the power switch 23 is provided in the seismic sensor 1, since the power switch 23 is provided on the outside of the distribution board housing 30a, the on / off state can be grasped and confirmed without opening the distribution board 30. easy. In particular, since the power switch 23 is provided on the lower surface of the distribution board 30, the power switch 23 of the distribution board 30 installed above the wall surface is easy to see and the state of the seismic sensor 1 is easy to grasp.
By providing the power switch 23 in the seismic sensor 1, the seismic sensor 1 can be turned off when performing construction or work involving vibration around the distribution board 30, and suddenly due to the vibration of the construction. It is possible to prevent a situation such as a power outage.

When the power switch 23 is provided on the distribution board 30, if the power switch 23 is turned off, all the functions of the seismic sensor 1 are stopped and no earthquake generation signal or the like is output. Therefore, by providing the power switch 23, the function stop button (function button 16) may not be provided, and the state of the seismic sensor 1 can be easily grasped by observing the state of the power switch 23 provided on the bottom surface of the distribution board 30. Therefore, it is an effective configuration to prevent the state of being turned off from continuing.
Further, in addition to providing the power switch 23 on the outside of the distribution board housing 30a, for example, an LED that emits light in conjunction with the on operation or the off operation is provided on the outside of the distribution board housing 30a near the power switch 23. It is also preferable because it is easy to grasp the state of the power switch 23.

FIG. 4 is a functional block diagram showing another form of the seismic sensor 1, which is different from the seismic device 1 of FIG. 1 in that it does not have a power switch, and instead has a setting switch 25 for stopping the seismic function. It is provided. The same reference numerals are given to the components common to those in FIG. 1, and the description thereof will be omitted.
By turning on the setting switch 25, the seismic sensor CPU 24 is in a state of not accepting the signal of the acceleration detection unit 11. In addition, the seismic function is restarted by turning it off. When the setting switch 25 is turned on, neither the first timer 24a nor the second timer 24b described above operates.
Further, as shown in FIG. 3, the setting switch 25 is arranged on the bottom surface of the distribution board housing 30a in the same manner as the power switch 23 described above.
In this way, a setting button 25 for stopping the seismic mechanism may be provided instead of the power switch 23, and by providing the setting switch 25 on the outside of the distribution board housing 30a, the distribution board 30 can be turned on without opening. It is easy to grasp the / off status and check it. Then, when performing construction or work involving vibration around the distribution board, the seismic sensor 1 will not malfunction if it is turned on.

Since the seismic sensor 1 of the above embodiment has an output terminal 19 for outputting an earthquake generation signal and an input terminal 20 for resetting from the outside, an earthquake output from the output terminal 19 by the seismic sensor 1 If the generated signal is input to the input terminal 20 as a reset signal, the seismic function can be stopped. Therefore, the setting switch 25 may be provided by using the output terminal 19 and the input terminal 20.
Further, when the setting switch 25 is provided, when the setting switch 25 is turned on, the seismic sensor 1 does not output an earthquake occurrence signal or the like even if an earthquake occurs, as in the case of the power switch 23. Therefore, the function stop button (function button 16) may not be provided by providing the setting switch 25, and the state of the seismic sensor 1 can be easily grasped by observing the state of the setting switch 25 provided on the bottom surface of the distribution board 30. Therefore, it is an effective configuration to prevent the state of being turned on from continuing.
Further, in addition to providing the setting switch 25 on the outside of the distribution board housing 30a, for example, an LED that emits light in conjunction with the on operation may be provided on the outside of the distribution board housing 30a near the setting switch 25. Further, it is easy to grasp the state of the setting switch 25, which is preferable.

1 ・ ・ Seismic device, 12 ・ ・ LED, 13 ・ ・ buzzer (sound part), 16 ・ ・ reset / test / stop button (test button, reset button, function stop button), 17 ・ ・ notification time changeover switch (2nd setting unit), 18 ... Return time changeover switch (1st setting unit), 23 ... Power switch, 24 ... Seismic device CPU (detection control unit, alarm sound control unit), 24a ... 1st Timer, 24b ... 2nd timer, 25 ... setting switch, 30 ... distribution board, 30a ... distribution board housing.

Claims (2)

In a distribution board equipped with a seismic sensor that detects an earthquake that exceeds the set seismic intensity and outputs an earthquake occurrence signal.
The feature is that either a power switch for turning on / off the power of the seismic sensor or a setting switch for turning on / off the seismic function in the seismic device is provided on the outer surface of the distribution board housing. Distribution board. The distribution board according to claim 1, wherein the power switch or the setting switch is provided on the lower surface of the distribution board housing.

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