JPH0594369U - Cleaning control device for flush toilet - Google Patents

Abstract

(57) [Summary] [Purpose] Prevents malfunction due to dew condensation on the touch switch plate, and prevents wash water from flowing. [Structure] A washing operation switch 7 operated to discharge flush water to a flush toilet is composed of a touch switch, and a heating element 20 for heating a touch switch plate 10 of the touch switch at a constant timing is provided to cause dew condensation. Prevent the condition.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a flush toilet flush control device using a touch switch as a flush operation switch.

[0002]

[Prior Art]

 2. Description of the Related Art Conventionally, a cleaning control device using a touch switch has been provided as a cleaning operation switch operated when discharging flush water from a flush toilet. When the user touches the touch switch plate with the hand, a cleaning operation signal is output from the touch switch to the control circuit for controlling the discharge of the cleaning water. Then, the control circuit receives the washing operation signal and opens the flush valve or the like to discharge the washing water to wash the flush toilet.

[0003]

[Problems to be solved by the device]

 However, in the flush toilet cleaning control device using this type of touch switch plate, dew condensation may occur on the touch switch plate under the influence of humidity in the toilet room. For this reason, the conventional cleaning control device has a problem in that the cleaning water is erroneously operated and the cleaning water is left to flow.

[0004]

[Means for Solving the Problems]

 The flush toilet flushing control device according to the present invention is a flush toilet flushing control device in which a switch operated to discharge flush water to the flush flush toilet is a touch switch plate. Is provided.

[0005]

[Action]

 Since the heating means for heating the touch switch plate is provided, the dew condensation state can be released before the touch switch plate malfunctions due to dew condensation. In addition to using a dew condensation sensor that detects the dew condensation state based on the change in internal resistance, the heating means should heat the touch switch while the user is touching the touch switch or for a certain period of time after touching the touch switch. However, the heat generation timing is not particularly limited.

[0006]

【Example】

 An embodiment of a flush toilet cleaning control device according to the present invention will be described below with reference to the drawings. FIG. 1 is a schematic view showing the structure of a toilet booth to which the flush toilet cleaning control device according to the present invention is applied. On the back wall of the toilet booth 1 shown in FIG. 1, a counter 4 including a top plate 2, a front plate 3 and the like is installed, and a flush toilet 5 is installed in front of the counter 4. A cleaning operation switch 7 is embedded in the right wall surface 6 of the toilet boots 1. The washing operation switch 7 is a touch switch, and when the toilet user 8 brings his / her hand 9 into contact with the contact plate (touch switch plate) 10 of the washing operation switch 7, flush water is discharged to the flush toilet bowl 4. Has been done.

FIG. 2 is a perspective view illustrating an overall system of a flush toilet cleaning control device according to the present invention. The cleaning operation switch 7 has a wall mounting portion 12 formed of a frame body on the front side of the embedded portion 11 embedded in the right wall surface 6 as a base. A touch switch plate 10 is attached. The touch switch plate 10 is made of, for example, a metal material, and is connected to the terminals 14 (see FIG. 3) of the print substrate 13 disposed inside the embedded portion 11 via lead wires 15. Further, lead wires 18 and 19 (lead wire 19 is grounded and serves as a ground wire) connected to terminals 16 and 17 (see FIG. 3) from the printed circuit board 13 of the touch switch board 10. It is connected to both ends of the heating element 20 attached to the back side. As the heating element 20, for example, a resistance element such as cement resistance is used.

The printed circuit board 13 has an internal voltage power supply circuit for supplying an internal voltage for circuit operation, and a voltage for detecting that the hand 9 of the user 8 has touched the touch switch board 10. The judgment circuit etc. are mounted. Further, the printed circuit board 13 sends a control signal indicating ON / OFF of the cleaning operation switch 7 to the controller 22 provided inside the counter 4 via the relay cable 21. The controller 22 is a control box that receives a control signal (washing operation signal) indicating that the washing operation switch 7 is ON, drives and controls the flush valve 23, and causes the flush toilet bowl 4 to discharge a certain amount of washing water. An AC power supply 24 of 100 V is supplied to the controller 22.

When the user 8 touches the touch switch board 10, the internal voltage (for example, DC 5 V) generated by the internal voltage power supply circuit of the printed circuit board 13 changes from the printed circuit board 13 to the terminals 17 to the leads. Since the electric current is supplied through the line 19 → ground → user 8 → touch switch plate 10 → lead wire 15, its internal voltage is, for example, 2. It drops to 5 volts. By comparing this decrease with the reference voltage (for example, 3.0 V) in the voltage determination circuit of the printed circuit board 13, it is confirmed that the cleaning operation switch 7 is ON, and the flash valve 23 is driven to clean a predetermined amount. Make the water spout.

Further, when the voltage determination circuit detects that the user 8 is touching the touch switch plate 10, a predetermined voltage is applied between the terminals 16 and 17 of the printed circuit board 13 to turn on the heating element 20. To heat. The heating element 20 is energized for a certain period of time after the user 8 touches the touch switch plate 10 as well as when the user 8 touches the touch switch plate 10. You may count with a timer etc. built in above and energize only during that time. Further, regardless of the switch operation of the toilet user 8, a sensor or the like for detecting the dew condensation state by a change in internal resistance may be provided so that the dew condensation state is activated when the dew condensation state becomes constant.

[0011]

[Effect of the device]

 As described above, according to the present invention, it is possible to prevent the malfunction caused by the dew condensation on the touch switch plate, so that the trouble such as the continuous flow of washing water does not occur.

[Brief description of drawings]

FIG. 1 is a schematic view showing a configuration of a toilet booth to which a flush toilet cleaning control device according to the present invention is applied.

FIG. 2 is a perspective view illustrating an entire system of a flush toilet cleaning control device according to the present invention.

FIG. 3 is a schematic diagram for explaining heat generation timing of a heating element in the flush toilet cleaning control device according to the present invention.

[Explanation of symbols]

 1 ... Toilet booth 7 ... Washing operation switch 10 ... Touch switch plate 13 ... Printed circuit board 20 ... Heating element 22 ... Controller

Claims (1)

[Scope of utility model registration request] 1. A flush toilet cleaning control device comprising a touch switch plate as a switch operated to discharge flush water to the flush toilet, wherein a heating means for heating the touch switch plate is provided. Cleaning control device for flush toilet.