JP2003051238A - Toilet bowl with warm-water flush system - Google Patents

Abstract

PROBLEM TO BE SOLVED: To prevent breakages due to application of overvoltage of a circuit of a toilet bowl 16 with a warm-water flush system, by cutting off a power supply to the toilet bowl 16 with the warm-water flush system, when the overvoltage is applied to a power-supply plug 6, and making numerous troubles and labor hours such as for disassembling with parts replacement, the parts replacement, reassembling and actuation confirmation or the like unnecessary, even if overvoltage prevention device 1 is destroyed, when overvoltage is applied to the overvoltage prevention device 1. SOLUTION: An overvoltage protection circuit 10 is built in the inside of a plug-type electricity leakage protective-detection device 1 and the circuit of the toilet bowl 16 with the warm-water flush system is protected from being breaking down. Because the electricity leakage protective-detection device 1 is made to be a separate body from the toilet bowl with the warm-water flush system and is built in a plug part of an outlet for a domestic use, it can be immediately replaced, when the electricity leakage protective-detection device 1 is destroyed.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an earth leakage protection device, and more particularly to an earth leakage protection device having an overvoltage application preventing function, which is suitable for preventing application of an overvoltage to a warm water washing toilet seat when an overvoltage is applied.

[0002]

2. Description of the Related Art FIG. 7 shows a conventional example. The warm water washing toilet seat 109, which is the subject of leakage protection, and the leakage protection device 101 are separate bodies. Single-phase two-wire power is supplied to the power plug 6. A power supply line 108 that supplies power to the warm water washing toilet seat 109 passes through the ferrite ring 103. When an electric leakage occurs in the warm water washing toilet seat, the current returning through the ground side wiring decreases. At that time, a difference component (unbalanced current) is generated in the crossing current crossing the ferrite ring 103, and a magnetic field proportional to the unbalanced current is generated. At that time, a current is generated in the current detection line 107 tightly coupled to the ferrite ring 103, and the generated current is detected by the leakage detection / cutoff IC 106. When a current greater than a predetermined value is detected by the leak detection / cutoff IC, that is, when a leak is detected, a signal is generated on the cutoff circuit operation signal line 105, the cutoff device 102 is turned off, and the warm water washing toilet seat 1
The power supply to 09 is cut off to prevent fire and electric shock to the user due to electric leakage.

[0003]

In the conventional leakage protection device, even when an overvoltage is applied to the power plug 104,
In some cases, the shutoff circuit 102 cannot be operated, and the overvoltage is applied to the hot water washing toilet seat 109 as it is, resulting in destruction of the hot water washing toilet seat (fusing of the fuse). In addition, even if an overvoltage protection device is built into the toilet seat for hot water washing, if the overvoltage protection device is broken down by overvoltage protection, the elements in the overvoltage protection device are destroyed, and if the overvoltage protection device is destroyed, Although it is necessary to replace the overvoltage protection device inside the flush toilet seat, since the hot water flush toilet seat is used around water, the entire control board is sealed with resin, etc., so the parts inside the control board were destroyed by overvoltage. In this case, it is necessary to replace the entire control board.Because many control load signal lines are connected to the control board, disassembling the hot water washing toilet seat, replacing parts, reassembling, checking operation, etc. Could be very expensive.

The present invention has been made in order to solve the above problems, and an object of the present invention is to supply at least a part of electric power to a hot water washing toilet seat or all when an overvoltage is applied to the power plug 104. The power supply is shut off to prevent the hot water washing toilet seat from being destroyed by the application of overvoltage.
In addition, even if the overvoltage protection device is destroyed when the overvoltage protection device is applied, it does not require a lot of time and effort such as disassembling parts replacement, parts replacement, reassembly, and operation confirmation. Is to

[0005]

In order to achieve the above object, a first aspect of the present invention is a hot water washing toilet seat provided with an earth leakage protection device, wherein the earth leakage protection device has an earth leakage detection circuit and an interruption circuit, Since the hot water washing toilet seat is characterized in that the power supply to the hot water washing toilet seat is stopped when an overvoltage is applied to the earth leakage protection device, the hot water connected to the power supply line to which the power is supplied by the overvoltage. It is possible to prevent the circuit (not shown) in the toilet bowl from being destroyed by the application of overvoltage. If there are a plurality of power supply lines to the protection target device, all power supply lines may be cut off, or at least one power supply line may be cut off.

Further, the second aspect of the present invention is characterized in that the earth leakage protection device is provided outside the casing of the warm water washing toilet seat.
Even if the earth leakage protection device is destroyed due to overvoltage, it is possible to replace only the earth leakage protection device without disassembling the casing of the hot water washing toilet seat, so that the workability of parts replacement is excellent.

According to a third aspect of the present invention, at least one set of a surge absorbing element and a current fuse are connected in series between at least one of the phases of the power supply line, and hot water is connected to the connection portion of the surge absorbing element and the current fuse. At least one of the power supply lines to the cleaning toilet seat is connected, and when the overvoltage is applied to the earth leakage protection device, the current fuse is disconnected to supply power to the power supply line connected to the connection portion. Since it can be stopped, even if an overvoltage is applied, the circuit (not shown) in the hot water washing toilet seat that is supplied with power from the connection point between the current fuse and the surge absorbing element is excessive due to lightning surge or the like. It is possible to prevent the destruction of the electronic circuit due to the application of various voltages.

According to a fourth aspect of the present invention, when the fuse for overvoltage protection is blown, the cutoff circuit is forcibly operated to stop the supply of electric power to the power supply line to overvoltage the hot water washing toilet seat. Since it is possible to prevent the application of the electric current, it is possible to prevent all electric power from being supplied to the toilet seat for washing with hot water and protect the electric circuit from damage due to overvoltage. In addition, since the circuit is also used as the cutoff circuit, the circuit configuration is simplified, and the connection between the earth leakage protection device and the warm water washing toilet seat is sufficient only with the normal power supply line.

[0009]

BEST MODE FOR CARRYING OUT THE INVENTION Embodiments of the present invention will be described below with reference to the drawings. An embodiment of the invention will be described with reference to FIG. The current applied to the power plug 6 passes through the interruption circuit 2 and the ferrite ring 3. Normally, the shutoff circuit 2 is not shut off, and the current applied to the power plug 6 is being sent to the hot water washing toilet seat 16.
When the current passing through the ferrite ring 3 is in an unbalanced state, that is, when a leak occurs in the hot water washing toilet seat 16, a current flows through the leak detection line 9 attached to the ferrite ring 3 and detects the leak. Detecting by the breaking circuit 8, the breaking circuit 2 is immediately operated through the breaking circuit signal line to stop the power supply. Next, when an overvoltage is applied to the power plug 6, the voltage is monitored at the voltage measurement point 4, and when the voltage exceeds the predetermined voltage, the overvoltage detection / interruption device 10 immediately outputs the interruption circuit signal line 11. Immediately shut off at least one of the power supply line (1) 12, the power supply line (2) 13, and the power supply line (3) 14 to prevent application of an overvoltage to the hot water washing toilet seat 16. 1
Reference numeral 7 denotes a power supply line (1) 12 and a power supply line (2) that electrically connect the earth leakage protection device 1 and the warm water washing toilet seat 16.
13, a coating for protecting the power supply line (3) 14.

Next, FIG. 2 showing an embodiment of the invention will be described. Single-phase two-wire power is supplied to the power plug 6. A varistor 23 and a current fuse 24 are connected in series between these phases, and a power supply line (1) 26 is connected to a connection point between the varistor 23 and the current fuse 24. When a leak occurs in the toilet bowl 32 for hot water washing, an unbalanced current is generated in the power line passing through the ferrite ring 25, and a cutoff signal is sent from the leak protection / cutoff circuit 29 to the cutoff circuit 22 via the leak detection line 30 to wash hot water. The power supply to the toilet seat 32 is stopped to protect against electric leakage. When an overvoltage is applied to the power plug 6, the varistor 23 acts as a surge absorbing element and is temporarily short-circuited due to the overvoltage. At this time, the current fuses 24 connected in series are connected.
Is melted by an overcurrent, the power supply to the power supply line (1) 26 is stopped. Therefore, warm water washing toilet seat 32
An internal circuit (not shown) internally connected to the power supply line (1) 26 and thereafter is protected from overvoltage.

Next, FIG. 3, which is an embodiment of the invention, will be described. Single-phase two-wire power is supplied to the power plug 6. A varistor 45 and a current fuse 46 are connected in series between the phases. Also, the resistor 43 and the resistor 4 are provided between the phases.
4 are connected in series, the connection point connecting each of the resistors, the connection point of the varistor and the current fuse are connected, and further connected to the leakage detection unit of the leakage protection / cutoff circuit 50. ing. The resistors 43 and 44 have the same resistance value and a high resistance value. Toilet seat 5 for warm water washing
When a leakage occurs in 3, the unbalanced current is generated in the power line passing through the ferrite ring 47, and the leakage protection / cutoff circuit 50 sends a cutoff signal to the cutoff circuit 42 via the leak detection line 51 to the hot water washing toilet seat 53. To stop the power supply to protect against leakage. If an overvoltage is applied to this power plug 6,
The varistor 45 acts as a surge absorbing element and is temporarily short-circuited by an overvoltage. At this time, the fuse 46 connected in series is blown by an overcurrent.
The connection point between the resistor 43 and the resistor 44 is normally 0V because the resistance values are the same, but when the fuse 46 is blown, half of the voltage applied to the power plug 6 is applied to the connection point. The voltage appears. Since this current is input to the leakage detection unit of the leakage detection / cutoff circuit 50, when overvoltage is applied, the power supply to the hot water washing toilet seat 53 is stopped by using the leakage breaker 42 as in the case of detecting the leakage. be able to. Therefore, the inside of the warm water flush toilet seat is protected from overvoltage.

Next, FIG. 4, which is an embodiment of the invention, will be described. Single-phase two-wire power is supplied to the power plug 6. The ground wire of the hot water washing toilet seat 73 is connected to the leakage protection device 61, and the grounding of the hot water washing toilet seat 73 can be taken from the leakage protection device 61. In addition, the power lines 68 and 69 and the ground line 74 can be bundled into one line, which is aesthetically pleasing. In FIG. 4, the ground wire 74 is the earth leakage protection device 61.
Although it is drawn in the form of a power line connected to, it goes without saying that the method of taking out the ground line may be in the form of a plug. In the figure, 62 is a power supply line interruption device, 6
3, 64 is a resistor, 65 is a varistor, 66 is a current fuse, 67 is a ferrite ring, 70 is an earth leakage detection / interruption device, 71 is an earth leakage detection wire, and 75 is a coating, and each performs the same operation as the above-mentioned embodiment. .

Next, FIG. 5, which is an embodiment of the present invention, will be described. The leakage protection device 120 is connected to an outlet on the wall of a general household by the power plug 6. In addition, when electric power is supplied to the hot water washing toilet seat (not shown) through the power line 123 and at the same time an electric leak occurs in the hot water washing toilet seat,
Alternatively, when an overvoltage is applied to the power plug, the operation lamp 122 is automatically turned on at the same time when the power supply to the warm water washing toilet seat is automatically cut off. Return button 1 when the normal state is restored from the leakage current or the overvoltage applied state
By pressing 21, it is possible to restart the electricity supply to the warm water washing toilet seat.

Next, FIG. 6, which is an embodiment of the present invention, will be described. Tap water is mainly supplied to the warm water washing toilet seat 135 by the water tap 131. The supplied tap water is warmed to an appropriate temperature by a heat exchanger (not shown) built in the warm water washing toilet seat, and jetted from the nozzle 132 by the operation of the operation unit 134. In addition, electric power is supplied to the hot water washing toilet seat 135 via an earth leakage protection device 130 (reference numeral 120 in FIG. 5) which is formed separately from the hot water washing toilet seat. When an electric leakage occurs in the warm water washing toilet seat, the circuit breaker (not shown) of the electric leakage protection device 130 is operated to stop the power supply. Similarly, when an overvoltage is applied to the earth leakage protection device 130, a breaker (not shown) provided in the earth leakage protection device is operated to stop energizing the hot water washing toilet seat to prevent damage due to the overvoltage. To do. The earth leakage protection device 130 is configured separately from the warm water flush toilet seat 135 and provided outside the casing of the hot water flush toilet seat 135. Therefore, even if an overvoltage is applied and the earth leakage protection device is destroyed, the earth leakage protection device 130 can be easily replaced only by replacing the insertion portion into the outlet without disassembling the casing of the hot water washing toilet seat 135. Excellent workability for replacement.

In the above description, the number of power supply lines is three for the sake of illustration, but it is clear that the spirit of the present invention is not impaired if one or more power supply lines are provided. Further, although the single-phase two-wire system is shown in the figure for the purpose of illustration, it is clear that the gist of the present invention is not impaired even in the single-phase three-wire system, the three-phase three-wire system and the like.

Further, the leakage protection device 130 can be housed in the casing of the warm water washing toilet seat, while sacrificing the workability of parts replacement. In this case, the portion inserted into the outlet can be made smaller than when the leakage protection device is exposed outside the casing.

[0017]

The present invention has the following effects due to the above configuration.

According to a first aspect of the present invention, there is provided a hot water washing toilet seat equipped with an earth leakage protection device, wherein the earth leakage protection device has an earth leakage detection circuit and an interruption circuit, and when an overvoltage is applied to the earth leakage protection device, hot water is washed. Since the power supply to the toilet seat is stopped,
It is possible to protect the warm water flush toilet seat from damage due to overvoltage.

According to the second aspect of the present invention, since the leakage protection device is provided outside the casing of the warm water washing toilet seat, the leakage protection device can be easily replaced and the replaceability of the parts is excellent.

According to a third aspect of the present invention, at least one surge absorbing element and a current fuse are connected in series between at least one of the phases of the power supply line, and the hot water washing toilet seat is connected to the connection portion of the surge absorbing element and the current fuse. At least one of the power supply lines to the power supply line is connected, and when the overvoltage is applied to the earth leakage protection device, the current fuse is disconnected to stop the power supply to the power supply line connected to the connection portion. Therefore, it is possible to protect the warm water washing toilet seat from damage due to overvoltage.

According to another aspect of the present invention, the surge absorbing element and the current fuse are connected in series between the phases of the power supply line, and the interruption circuit is operated by the current generated by the current generator that operates when the current fuse is cut off. It is possible to protect the hot water washing toilet seat from damage due to overvoltage because it is characterized by preventing overvoltage application to the hot water washing toilet seat, and there is no need for an overvoltage power supply line to connect the earth leakage protection device and the hot water washing toilet seat. It is possible to connect with the power supply line of the minimum configuration.

[Brief description of drawings]

FIG. 1 is a configuration diagram of an earth leakage protection device according to an embodiment of the present invention.

FIG. 2 is a configuration diagram of a leakage protection device that is an embodiment of the present invention.

FIG. 3 is a configuration diagram of a leakage protection device that is an embodiment of the present invention.

FIG. 4 is a configuration diagram of a leakage protection device that is an embodiment of the present invention.

FIG. 5 is an external view of a leakage protection device that is an embodiment of the present invention.

FIG. 6 is an external view of an earth leakage protection device and a warm water washing toilet seat according to an embodiment of the present invention.

FIG. 7 is a configuration diagram of a conventional earth leakage protection device.

[Explanation of symbols]

1 Leakage protection device 2 Breaking circuit 3 Ferrite ring 4 voltage measurement points 5 Each supply voltage cutoff circuit 6 power plug 7 Breaking circuit signal line 8 Leakage detection / cutoff circuit 9 Leakage detection line 10 Overvoltage detection / cutoff circuit 11 Breaking circuit signal line 12 Power supply line (1) 13 Power supply line (2) 14 Power supply line (3) 16 hot water wash toilet seat 17 coating 22 Earth leakage protection device 23 Barista 24 current fuse 25 Ferrite ring 26 Power Supply Line (1) 27 Power supply line (2) 28 Power supply line (3) 29 Leakage detection / interruption circuit 30 Leakage detection line 32 hot water washing toilet seat 33 coating 41 Earth leakage protection device 42 Power supply line breaker 43 resistance 44 Resistance 45 Barista 46 current fuse 47 Ferrite ring 48 power supply line (1) 49 Power supply line (2) 50 Leakage detection / interruption device 51 Leakage detection line 53 Toilet with warm water wash 54 coating 61 Leakage protection device 62 Power supply line breaker 63 resistance 64 resistance 65 Barista 66 current fuse 67 Ferrite ring 68 Power supply line (1) 69 power supply line (2) 70 Leakage detection / interruption device 71 Leakage detection line 73 Toilet seat with warm water wash 74 ground wire 75 coating 101 Leakage protection device 102 Breaking circuit 103 Ferrite ring 104 power plug 105 Breaking circuit operation signal line 106 Leakage detection / interruption device 107 Leakage current detection line 108 Equipment side power supply connection point 109 Toilet seat for washing with warm water 110 coating 120 earth leakage protection device 121 Return button 122 Operation lamp 123 power line 130 Earth leakage protection device 131 water tap 132 nozzles 133 heating toilet seat 134 Operation part 135 Hot water cleaning device

Continued front page    (72) Inventor Ryuta Oishi             2-1-1 Nakajima, Kokurakita-ku, Kitakyushu City, Fukuoka Prefecture             No. Totoki Equipment Co., Ltd. F-term (reference) 2D038 JF00 JH00 KA00                 5G004 AA02 AB02 BA01 BA07 DA01                 5G030 EA00 FA01 XX00 YY13

Claims (4)

[Claims] 1. A hot water flush toilet seat having an earth leakage protection device, wherein the earth leakage protection device has an earth leakage detection circuit and a cutoff circuit, and when an overvoltage is applied to the earth leakage protection device, the toilet seat is washed with hot water. Toilet seat for washing with warm water, which is characterized by stopping the power supply of. 2. The hot water flush toilet seat according to claim 1, wherein the earth leakage protection device is provided outside a casing of the hot water flush toilet seat. 3. The earth leakage protection device, wherein at least one set of a surge absorbing element and a current fuse is connected in series between at least one phase of each phase of a power supply line, and a connection portion between the surge absorbing element and the current fuse is connected. At least one of the power supply lines to the hot water washing toilet seat is connected, and when the overvoltage is applied to the earth leakage protection device, the current fuse is disconnected to supply the power to the power supply line connected to the connection portion. 3. The hot water flush toilet seat according to claim 1, wherein the hot water flush toilet seat is stopped to prevent application of overvoltage to the hot water flush toilet seat. 4. In the earth leakage protection device, a surge absorbing element and a current fuse are connected in series between phases of a power supply line, and a cutoff circuit is activated by a current generated by a current generator that operates when the current fuse is cut. The warm water flush toilet seat according to claim 1 or 2, which is operated to prevent an overvoltage from being applied to the warm water flush toilet seat.