JP3114906B2 - Leakage breaker check device for flush toilet seat - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an electric leakage breaker check device for a flush toilet seat which automatically checks the operation of an electric leakage breaker provided on the flush toilet seat.

[0002]

2. Description of the Related Art In general, a flush toilet seat uses cleaning water, so that safety against electric leakage must be maintained. For this reason, in the flush toilet seat, the earth leakage breaker is provided on the commercial AC power supply line (referred to as AC line). Conventionally, an earth leakage breaker used for a flush toilet seat is, as shown in FIG. 4, integrated with a plug and configured in a breaker unit inserted into an outlet side. Then, when the breaker unit a is inserted into the outlet, the earth leakage breaker is set to the earth leakage monitoring state.

On the other hand, a user is instructed to periodically check whether the earth leakage breaker operates normally. The check of the earth leakage breaker presses the button b which simulates the earth leakage state in the earth leakage breaker circuit. At this time,
The user can determine normal by checking the lighting state of the earth leakage lamp c attached to the breaker unit a, for example.

Since the conventional earth leakage breaker for the flush toilet seat does not have an automatic reset function (a function of automatically closing a breaker contact opened by a simulated earth leakage), after the earth leakage inspection, the breaker unit a is once connected to an outlet. Or the breaker unit a was disconnected from the outlet by the release switch provided on the AC line and the return button d provided on the breaker unit a to operate the release switch. The same state as described above is generated on the AC line, and the earth leakage breaker is returned to the operating state.

[0005]

As described above, in the conventional flush toilet seat, the leakage check is left to the user, but the user often forgets to check the leakage breaker, and the position of the leakage breaker is plugged. Because it is far from the side and the toilet seat, it is expected that it is not done much because it is troublesome.

[0006] In addition, when a short circuit check is performed, the supply of AC 100 V is temporarily stopped.
The set value set in the AM returns to the initial value and must be set again. In view of the above circumstances, the present invention automatically performs an inspection of an earth leakage breaker including a return operation without leaving it to a user, and furthermore, performs highly safe cleaning without losing set values such as toilet seat temperature by the inspection. The purpose is to provide toilet seats.

[0007]

SUMMARY OF THE INVENTION The present invention relates to a circuit breaker contact connected to a commercial AC power supply line, which is disconnected due to electric leakage and cuts off the commercial AC power supply line, and a simulated earth leakage that sets the commercial AC power supply line to a simulated earth leakage state. And a test signal transmitted to the simulated earth leakage means for checking the breaker, and a monitor signal indicating an operating state of the breaker contact at that time. And a reset signal for returning the breaker contact activated by the breaker check to a reset signal for determining whether the leakage breaker is normal or abnormal, a storage means storing various set values set in the toilet seat, and a reset signal. Toilet seat controller including return command means for sending Tsu is configured various setting values set in the click before the toilet seat from the memory contents holding means to back up the power supply voltage to the toilet seat controller to hold in the storage means.

In a preferred embodiment, the earth leakage breaker is constituted by an electromagnetically driven relay. The determination means has a counter for counting the output of a seating sensor attached to the toilet seat, for example, and sends out a test signal when the count value exceeds a predetermined value. In addition, the storage content holding means includes:
It is possible to adopt a configuration in which the power supply is maintained to the storage means by using a conductor provided on the earth leakage breaker side and connected in parallel with the breaker contact on the AC line at the time of earth leakage check.

Further, another storage content holding means may be provided on the toilet seat controller side, and may use a battery for holding the content in the storage means even when the breaker contact is brought into a break state due to a simulated earth leakage state.

[0010]

According to the present invention, for example, when the number of times a person sits on the toilet seat is counted, for example, 100 times, the earth leakage breaker is automatically checked. If the earth leakage breaker normally operates due to the simulated earth leakage state by the earth leakage breaker check, the breaker contact remains in the break state, and the return command means of the toilet seat controller sends a command to the earth leakage breaker return means to restore the breaker contact. At the same time as the simulated electric leakage state, the storage content holding unit performs a power supply voltage backup on the storage unit so that the set values of the toilet seat temperature, the washing water temperature, and the like set in the toilet seat are not lost from the storage unit of the toilet seat controller. .

[0011]

BRIEF DESCRIPTION OF THE DRAWINGS FIG. FIG. 1 and FIG. 2 are a conceptual diagram showing an embodiment of the present invention and a specific configuration diagram thereof. A portion enclosed by a dotted line in FIG. 1 is a toilet seat control unit 1 installed on the side of the toilet seat, and the leakage breaker check device for a flush toilet seat according to the present invention is configured in the seat control unit 1 together with the leakage breaker 4. Have been.

That is, the toilet seat control unit 1 is a box housing a toilet seat controller 5 and the like, which are constituted by an earth leakage breaker 4 and an integrated circuit such as a microcomputer.
While the plug 2 inserted into the C outlet is pulled out,
The AC line 3 is connected to a heater or the like (not shown) via an earth leakage breaker 4. The earth leakage breaker 4 is shown in FIG.
As shown in the bold line of FIG.
Breaker contacts 22, 22 are connected to the lines, respectively. One end of a resistor 24 constituting the simulated earth leakage means 23 of the present invention is connected to the input-side AC line of the zero-phase current transformer 21 and the hot-side AC line 3A. The other end of the resistor 24 is connected to the cold side AC line 3B via the relay contact 25 ₁ of the make-type driven by the coil 25a.

The AC lines 3A and 3B are connected to a leakage monitoring unit 29. The leakage monitoring means 29
Diode rectifier 26 connected to C lines 3A and 3B
And a circuit mainly composed of a leakage monitoring circuit 27 integrated on the load side. The positive potential output terminal 26a of the diode rectifier 26 is connected to the anode of the thyristor 28 via the coil 22a, and is connected to the negative potential output terminal 26b of the diode rectifier 26 via a series circuit for resetting the resistor 30 and the capacitor 31. The cathode of the thyristor 28 is connected to the negative potential output terminal 26 b via a resistor 32, and the gate of the thyristor 28 is connected to the negative potential output terminal 26 b via a capacitor 33 and is monitored for leakage through a diode 34. Circuit 27
Is connected to the DC voltage output terminal of The zero-phase current transformer 2 is connected to the leakage detecting end of the leakage monitoring circuit 27.
One detection winding 21a is connected via a ladder connection of the resistors 35 and 36. Further, a relay contact 38 driven by a coil 38a is connected in parallel to the capacitor 31 of the series circuit for resetting. Above coil 3
8a and the coil 22b are connected to the toilet seat controller 5 described later.
, And is operated by a reset signal (A, B) 5b, and the coil 22b constitutes the return means 18 according to the present invention.

The cathode resistor 32 of the thyristor 28 has a light-emitting diode 37 for monitoring a leakage check.
And the negative potential output terminal 26b is grounded. Further, the earth leakage breaker 4 is provided with lines 17, 17 for connecting the input side of the zero-phase current transformer 21 and the load side of the breaker contact 22 in parallel. These lines 17, relay contacts 25 _2, 25 ₃ driven by the coil 25a is interposed along with the relay contact 25 _1. Therefore, these relay contacts 25 ₂ and 25 ₃ conduct at the time of a breaker check in which the AC line on the load side from the breaker contact 22 is in a simulated earth leakage state, and supplies the AC voltage to the constant voltage power supply circuit 9 of the toilet seat controller 5 and the like. The storage contents holding means 20 is constituted.

The electric leakage monitoring means 29 derives a voltage based on the DC voltage output terminal of the electric leakage monitoring circuit 27 to the toilet seat controller 5 as an electric leakage confirmation signal 4a, and makes the toilet seat controller 5 recognize that an electric leakage has occurred. I have. The toilet seat controller 5 has storage means 54 for storing the set values of the hot water in the hot water tank, the set values of the heaters, etc., controls each block of the hot water tank, the toilet seat heater, the nozzle, etc., and various sensors such as the seating sensor 6 This is a central processing unit that performs processing of signals from the controller, driving of various display elements 7 for displaying operation modes, input signal processing of various operation switches, and the like.

In particular, in the present invention, the toilet seat controller 5 accumulates the number of times the toilet seat is used by the sensor outputs of the various sensors, for example, the seating sensor 6, and when the number of uses exceeds a predetermined number, the electric leakage breaker 4 Simulated earth leakage means 2
3 (coil 25a) by sending a test signal 5a to decode the monitor signal 40 indicating the operating state of the breaker contact 22; and the return means 18 for returning the breaker contact 22 activated by the breaker check.
And reset command means 55 for sending a reset signal. The seating sensor 6 may be, for example, a pressure sensor that detects pressure applied to the toilet seat or a sensor that detects opening and closing of the toilet seat.

An earth leakage breaker check device having such a configuration.
The operation of the device is shown in the flow chart of FIG.
This will be described with reference to FIG. Fig. 3 is a leakage breaker check pro
Show grams. This program is step S ₁~ S
_ThreeIt starts with a [counter value check] loop. This
The loop of step S₁With the sensor coming out of the seating sensor 6
If there is power, step S_TwoCounter value is only 1
Incremented. And step S_ThreeWith ink
The incremented value is compared with, for example, “100”.

[0018] When the incremented value of the counter in step S ₃ exceeds "100", the seat controller 5 shifts from the loop to step S ₄ [leak check]. In step S _4, the determination unit 53 sends a leakage test signal 5a to the earth leakage circuit breaker triggered an overflow output of the counter. Earth leakage test signal 5a supplied to the circuit breaker 4 is a DC voltage, the coil 25a to close the relay contact 25 ₁ is energized by the DC voltage. Thus, AC line 3A,
3B is short-circuited by the resistor 24 to be in a simulated earth leakage state.

When a simulated earth leakage condition is generated, earth leakage breaker 4 operates as follows. Due to the generation of the simulated leakage state, a difference occurs in the current flowing through the zero-phase current transformer 21, and a voltage is induced in the detection coil 21a. As a result, the potential between the leakage detection end of the leakage detection circuit 27 and the leakage detection circuit 27 changes, and the leakage detection circuit 27 detects the leakage and generates a DC voltage from the output terminal. With this DC voltage, the pn junction between the gate and the anode of the thyristor 28 is forward-biased, and the thyristor 28 is turned on, whereby the voltage drop of the resistor 32 causes the light emitting diode 37 to emit light, indicating that a leakage state is occurring. In this case, since the DC voltage at the terminal continues to be generated due to the leakage detection, for example, if the diode rectifier 26 is of a half-wave rectification type, the thyristor 2
8 repeats ON and OFF at the cycle of the half-wave waveform,
In response, the light emitting diode 37 blinks. Thus, the user knows that the leakage check has been performed.

In this embodiment, in addition to the generation of the simulated earth leakage state, the relay contact 2
5 _2, 25 ₃ is a make state. For this reason, an AC power supply lead-out path is formed by the line 17 bypassing the breaker contact 22, and the toilet seat controller 5 is provided with the constant voltage power supply circuit 9.
A power supply voltage is supplied via the power supply. Therefore, even if this breaker check is performed, the storage means 54 of the toilet seat controller 5
The various settings such as the temperature of the hot water in the hot water tank or the heater temperature written in the hot water tank are not lost.

On the other hand, when the thyristor 28 is turned on, a current flows through the coil 22a, and when the earth leakage breaker 4 is normal, the breaker contact 22 drops off and the breaker contact 22
Is in a state where the AC lines 3A and 3B are disconnected. Seat controller 5, circuit breaker 4 the operation of the breaker contacts 22 as described above is recognized by the determination means 53 of the seat controller 5 determines whether normal or abnormal (Step S ₅
[Judgment of breaker operation status]). That is, when the breaker contact 22 is brought into the break state by the normal operation as described above, the AC voltage is not supplied to the heater or the like.
The determination means 53 of the toilet seat controller 5
2 can be recognized as operating normally. Step S ₅ is not is judged monitor signal 40 as described above.

If the breaker contact 22 remains closed for some reason, the monitor signal 40 indicates that the AC voltage to the heater or the like is still reduced to a certain potential due to the simulated leakage. Reference numeral 53 can determine whether the leakage breaker 4 is abnormal. In the case of an abnormality of the earth leakage breaker 4, in this embodiment, all indications provided on the flush toilet seat, such as the set value of the hot water in the hot water tank, the set value of the heater temperature, and various display elements 7 for displaying the operation mode. The element 7 is displayed blinking to notify that the leakage breaker 4 is abnormal (step S ₇ ).
Prompt for replacement.

[0023] That is, the toilet seat controller 5 performs when it is determined that the normal at step S _5, after becoming, for example, 5 seconds standby state in step S _6, step S _8, S ₉ to [return command]. Step S ₈ lowers leakage test signal 5a stand, followed by the reset signal at step S ₉ (A, B) 5b
Occurs. A reset signal (A, B) 5b causes a current to flow through the coils 22b and 38a, bringing the breaker contact 22 into a make state and the relay contact 38 into a make state temporarily. The thyristor 28 is reset when the relay contact 38 is temporarily in the make state.

Further, by the fall of the leakage test signal 5a, the current in the coil 25a does not flow, the relay contact 25 _to 253 breaks each operate. As a result, the resistor 24 is disconnected from the AC line 3 and the simulated earth leakage state is released, and the memory content holding means 20
Is released from the bypass state of the break contact 22.

The above-mentioned leakage check program is repeated every time the sensor output of the seating sensor 6 is counted 100 times again, so that it is possible to avoid forgetting to check and troublesome when leaving the inspection of the leakage breaker to the user. it can. In addition, if the storage content holding means 20 backs up the battery as the storage means 54 of the toilet seat controller 5, the set value can be compensated more reliably.

[0026]

As described above, according to the present invention, the toilet seat controller is provided with the judging means for automatically checking the earth leakage breaker, so that the inspection of the earth leakage breaker is not neglected and the safety is greatly improved. be able to. Also,
After the above-described check, the return means and the return instruction means are used to automatically return the earth leakage breaker, so that the user is not required to perform a return operation.

In addition, since the contents of the storage means holding various set values such as the temperature of the toilet seat are compensated at the time of the earth leakage breaker check, the trouble of resetting each time the earth leakage breaker is checked is eliminated.

[Brief description of the drawings]

FIG. 1 is a conceptual diagram of an electric leakage breaker check device for a flush toilet seat according to the present invention.

FIG. 2 is a configuration diagram showing one embodiment of the present invention based on the conceptual diagram.

FIG. 3 is a flowchart showing the operation of FIGS. 1 and 2;

FIG. 4 is a perspective view showing an earth leakage breaker in a conventional flush toilet seat.

[Explanation of symbols]

1 ... toilet seat body, 2 ... AC outlet, 3 ... AC line,
4: earth leakage breaker (20: memory content holding unit, 18: return unit, 23: simulated earth leakage unit, 29: earth leakage monitoring unit),
5 toilet seat controller (53 determining means, 54 storage means, 55 return command means), 6 seat sensor, 7 display element.

──────────────────────────────────────────────────続 き Continuation of the front page (72) Inventor Osamu Matsubara 2-1-1 Asahi-machi, Kariya-shi, Aichi Aisin Seiki Co., Ltd. (56) References JP-A-6-17475 (JP, A) Shokai 47 −18028 (JP, U) Actual opening 48-27341 (JP, U) (58) Fields investigated (Int. Cl. ⁷ , DB name) H01H 83/04 E03D 9/08 H02H 3/05

Claims (1)

(57) [Claims] A breaker contact that is connected to a commercial AC power supply line and separates due to electric leakage and cuts off the commercial AC power supply line; a simulated earth leakage unit that simulates the commercial AC power supply line in a simulated earth leakage state; and the breaker in a detached state. An earth leakage breaker including a restoration unit for restoring a contact, a test signal is transmitted to the simulated earth leakage unit for a breaker check, and a monitor signal indicating an operation state of the breaker contact at that time is decoded to detect the earth leakage breaker. A determination means for determining a normal / abnormal condition, a storage means for storing various set values set in the toilet seat, and a return command means for sending a reset signal to the return means for returning the breaker contact activated by the breaker check are included. Toilet seat controller that has been set as the seat before check at the time of the breaker check Circuit breaker checking device of the washing toilet seat that that the stored content holding means various set values to back up the power supply voltage to the toilet seat controller to hold in the storage means, characterized by comprising a.