JP2001065038A - Private part washing device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To improve responsiveness in ensuring safety in case of the occurrence of abnormality such as the lock of a motor. SOLUTION: This private part washing device is provided with a motor for drying, deodorizing or for a water pump; a control means 8 for controlling driving of the motor; a power circuit for supplying power to the motor and control means 8; and an operating switch 7 for inputting operation instructions of drying, deodorizing or washing. The control means 8 is provided with a detecting means for detecting the voltage fluctuation of a control circuit system or a motor circuit system after the operation instruction input to the operating switch 7 which results in driving the motor, and a protecting means for stopping output to the motor circuit system upon receiving abnormal detection output from the detecting means. In case of the occurrence of such a situation that a large current flows to the motor as the case of the lock of the motor after the operation instruction input which results in driving the motor, this situation is detected through the voltage drop of the control circuit system or motor circuit system, and the motor is stopped.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a local cleaning apparatus for performing shower cleaning, drying, etc. of a human body part.

[0002]

2. Description of the Related Art As a local cleaning device, a toilet seat temperature adjusting device, a cleaning device for discharging cleaning water from a nozzle, a drying device for performing hot air drying, a deodorizing device, and an operation thereof are provided on a toilet seat body attached to a toilet bowl. Is provided with an operation unit for instructing the operation.

In such a local cleaning device, a motor is used as a power for a blowing fan, a deodorizing fan, a water pump for water supply in the cleaning device, and the like. In order to secure safety against temperature rise due to an increase in the current value when the lock is abnormal, a temperature fuse that operates by increasing the temperature of the motor unit or the temperature of the motor driving element is used.

[0004]

In this case, it is necessary to add a thermal fuse as a separate part for safety measures. In addition, as shown in FIG. The driving element will be exposed to the high temperature state for a while. In FIG. 6, A indicates the outer temperature of the motor, B indicates the driving element temperature, and Th indicates the operating temperature of the thermal fuse.

SUMMARY OF THE INVENTION The present invention has been made in view of the above circumstances, and an object of the present invention is to provide a local cleaning apparatus having a high responsiveness for ensuring safety when an abnormality such as a motor lock occurs. is there.

[0006]

SUMMARY OF THE INVENTION Accordingly, the present invention provides a motor for a drying or deodorizing or water pump, control means for controlling the driving of the motor, and a power supply for supplying power to the motor and the control means. A local cleaning device comprising a circuit and an operation switch for inputting an operation instruction such as drying, deodorization, or cleaning, wherein the control means operates the motor for the operation switch after inputting the operation instruction. It is characterized by comprising detection means for detecting voltage fluctuations in the control circuit system or the motor circuit system, and protection means for receiving an abnormality detection output from the detection means and stopping output to the motor circuit system. ing.

When a large current flows through the motor, such as when the motor is locked, after an operation instruction to drive the motor is input, this is detected by a voltage drop in the control circuit system or the motor circuit system, and the motor is operated. It is intended to be stopped.

[0008] As the detection means, a motor which outputs an abnormality detection output by detecting a power supply voltage lower than a predetermined voltage a predetermined number of times during a predetermined period after inputting an operation instruction by an operation switch is used. Malfunction due to a large current flowing at startup can be prevented.

When the motor is for drying, the protection means not only stops the output to the motor circuit system in response to the abnormality detection output, but also stops the drying heater to prevent abnormal heating by the heater. Can be.

It is preferable that the apparatus further comprises abnormality notification means which operates upon receiving an abnormality detection output. Further, as the detection means, a threshold voltage for abnormality detection is set to a different value for each power supply voltage or each voltage applied to the motor. By using the above, it is possible to prevent a malfunction due to a fluctuation in the motor power supply voltage due to the level of the power supply voltage or the voltage applied to the motor.

[0011]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described in detail below with reference to an example of an embodiment. This local cleaning device includes a toilet seat body 2 attached to a toilet bowl 1, a toilet seat temperature adjusting means 3, and a nozzle for supplying washing water. Cleaning means 4 for discharging from the air, drying means 5 for performing hot-air drying, deodorizing means 6, an operation switch 7 for instructing these operations, and each of the above means in response to an instruction input from the operation switch 7. Activating control means 8
The operation switch 7 includes an operation section for setting the temperature of the toilet seat, an operation section for setting the temperature and the flow rate of the washing water,
An operation unit for instructing the washing operation, an operation unit for instructing the drying operation of the buttocks after washing, an operation unit for setting the temperature and the amount of hot air for drying, and the like are provided. The control means 8 controls the above means 1 to 6 accordingly. Reference numeral 9 in the figure denotes a power supply circuit for rectifying and stepping down a commercial frequency power supply and supplying power to each unit.

Of the above means, the cleaning means 4 uses a motor as the power of the water pump, the drying means 5 uses a motor as the power of the blower fan, and the deodorizing means 6 also uses the blower. The motor is used as the power of the fan for the motor. As shown in FIG. 2, the power supply circuit 9 includes a step-down unit 91 including a transformer or a resistor for stepping down the commercial power supply 90 and a rectifying unit 9 including a diode bridge.
The rectifying unit 92 supplies power to the motor, and the three-terminal regulator 93 supplies power to the control unit 8.

The control means 8 includes a voltage detecting means for detecting a power supply voltage of a motor circuit system and a control circuit system as a part of the circuit configuration. When an abnormality such as a motor lock occurs, the control means 8 shown in FIG. As shown in the drawing, utilizing the fact that the power supply voltage decreases as the load current increases, the voltage detection means detects that the voltage has dropped below a predetermined value, thereby detecting the occurrence of an abnormality and stopping the motor. Has become.

More specifically, based on the flowchart shown in FIG. 4, when an operation instruction input for driving the motor is given to the operation switch 7, an operation corresponding to the operation instruction (operation mode instruction) is performed by the motor. The threshold value set according to the power supply voltage or the motor applied voltage and the motor current set value for causing the motor to perform the operation is taken from the abnormality detection threshold value table 85, the corresponding threshold value is set, and the motor is driven. A predetermined time (time required for starting the motor) t from the time when the signal to be caused to be output is output t
After the lapse of (see FIG. 5), a voltage is applied by the voltage detecting means to determine whether the detected voltage is lower than the threshold. By repeating this determination operation a predetermined number of times within the time T, if the number of times the low voltage is detected has reached the predetermined number, the motor is stopped, and if there is a heater that is being driven simultaneously with this motor, The heater is also stopped. For example, if the motor is for a fan for drying, the heater for drying is also stopped. Further, the abnormality notification means 1 such as a buzzer is operated.

[0015]

As described above, according to the present invention, the detecting means for detecting the voltage fluctuation of the control circuit system or the motor circuit system after the input of the operation instruction to drive the motor for the operation switch, Protection means for stopping the output to the motor circuit system in response to the abnormality detection output of the motor, and a situation in which a large current flows to the motor such as when the motor is locked after an operation instruction input to drive the motor occurs. Sometimes, this is detected by the voltage drop of the control circuit system and motor circuit system, and the motor is stopped, and the motor responds well to the occurrence of abnormalities such as motor lock before each part becomes hot. The motor and motor drive elements are not exposed to high temperatures, and the need for a thermal fuse is eliminated, resulting in low cost. In addition to being able to reliably detect abnormal conditions such as the presence of foreign matter and motor rotation reduction / lock at the end of motor life as “motor lock”, and to perform detection after inputting an operation instruction, Unlike the detection of a power failure or a momentary power failure, the motor lock can be reliably detected.

As the detection means, a means for outputting an abnormality detection output by detecting a power supply voltage lower than a predetermined voltage a predetermined number of times during a predetermined period after inputting an operation instruction by an operation switch is used. By using the value of the predetermined period according to the starting characteristics, it is possible to prevent a malfunction due to a large current flowing at the time of starting the motor.

When the motor is for drying, the protection means not only stops the output to the motor circuit system in response to the abnormality detection output, but also stops the drying heater so that the power is supplied to the heater. Abnormal heat generation can be prevented.

If the apparatus is provided with an abnormality notification means that operates upon receiving an abnormality detection output, it is possible to allow the user to recognize the abnormality of the device, so that the apparatus will not be used for a long time without noticing that a failure has occurred. Is safe.

Further, by using, as the detection means, a threshold voltage for abnormality detection which is set to a different value for each power supply voltage or voltage applied to the motor, the power supply voltage or the motor applied voltage is changed according to the specification of the air volume or the like. Even in the case of a change, the motor lock can be reliably detected.

[Brief description of the drawings]

FIG. 1 is a block diagram illustrating an example of an embodiment of the present invention.

FIG. 2 is a block diagram of a power supply and a control system according to the first embodiment;

FIG. 3 is an explanatory diagram relating to a voltage drop of the power supply circuit according to the first embodiment.

FIG. 4 is a flowchart showing the operation of the above.

FIG. 5 is a time chart showing an operation at the time of motor lock in the above.

FIG. 6 is a time chart showing an operation at the time of motor lock in a conventional example.

[Explanation of symbols]

 7 Operation switch 8 Control circuit

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[Procedure amendment]

[Submission Date] January 11, 2000 (2000.1.1)
1)

[Procedure amendment 1]

[Document name to be amended] Drawing

[Correction target item name] Fig. 5

[Correction method] Change

[Correction contents]

FIG. 5

[Procedure amendment 2]

[Document name to be amended] Drawing

[Correction target item name] Fig. 6

[Correction method] Change

[Correction contents]

FIG. 6

 ────────────────────────────────────────────────── ─── Continued on the front page (72) Inventor Harumi Ushida 207, Ichibancho, Kiyosu-cho, Nishi-Kasugai-gun, Aichi F-term (reference) 2D038 JC15 KA07 5H530 AA01 BB01 CC21 CD30 CD34 CD36 CF01 CF05 CF06 DD15

Claims (5)

[Claims] 1. A motor for a drying or deodorizing or water pump, a control means for controlling the driving of the motor, a power supply circuit for supplying power to the motor and the controlling means, a drying or deodorizing or cleaning, etc. And an operation switch for inputting an operation instruction, wherein the control means controls the voltage fluctuation of the control circuit system or the motor circuit system after inputting the operation instruction to drive the motor for the operation switch. A local cleaning device comprising: a detection unit for detecting the abnormality detection; and a protection unit for receiving an abnormality detection output from the detection unit and stopping the output to the motor circuit system. 2. The method according to claim 1, wherein the detecting means outputs an abnormality detection output by detecting a power supply voltage lower than a predetermined voltage a predetermined number of times during a predetermined period after inputting an operation instruction by an operation switch. The local cleaning device according to claim 1, wherein 3. The motor according to claim 1, wherein the motor is for drying, and the protection means stops the output to the motor circuit system upon receiving the abnormality detection output and also stops the drying heater. A local cleaning device as described. 4. The local cleaning apparatus according to claim 1, further comprising an abnormality notification unit that operates upon receiving an abnormality detection output. 5. The apparatus according to claim 1, wherein the detecting means sets a threshold voltage in the abnormality detection to a different value for each power supply voltage or each voltage applied to the motor.
A local cleaning device as described.