JPH0131657Y2 - - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to a washing cylinder for a toilet bowl having a private part washing function, in which washing water at an appropriate temperature is always jetted out from the spout hole of the washing cylinder during washing.

The conventional flushing water jetting mechanism for toilet bowls with private parts cleaning function is that by operating the flushing lever, water pressure is applied to the hot water tank, and at the same time hot water is pushed out of the hot water tank and pressurized by the water pressure. The hot water is applied to the nozzle part and is ejected from the jet hole provided at the tip of the cleaning cylinder in the nozzle part.When the cleaning lever is operated, the pump is activated and the hot water in the hot water tank reaches the cleaning cylinder in the nozzle part. There are two types: one is a method in which the water is ejected from a nozzle provided at the tip of the cleaning cylinder. The temperature control of the hot water tank and the safety device of the heating heater of a conventional toilet bowl having a private part washing function are performed using a thermostat, a temperature fuse, and the like. Conventional nozzle mechanisms include the manual type, in which the cleaning lever and cleaning cylinder are linked together, and when the cleaning lever is operated, the cleaning cylinder mechanically moves to a preset position, and the nozzle cleaning mechanism uses warm water pressure to clean the nozzle. There are two types: an automatic type in which the cylinder slides to a preset position; The structure of the cleaning cylinder is the same for both types. That is, as shown in FIG. 1, a cleaning cylinder 1 of the nozzle part is provided with a cavity 7, and an appropriate number of jet holes 3 for jetting cleaning water are drilled at the tip of the cylinder 1. It's communicating. The above is the conventional cleaning mechanism of a toilet bowl having a private part cleaning function.

Currently, a problem with toilets that have a private part washing function is that when the hot water washing lever or switch is operated to spray out washing water, cold water is sprayed out even though the initial washing water should be warm water.
Conventional toilet bowls having a private part cleaning function are equipped with a thermostat, a temperature fuse, etc. to control the temperature. However, conventional temperature control is aimed at adjusting the temperature of a hot water tank or preventing abnormal heat generation from a heating heater. Therefore, hot water at the set temperature is supplied from the hot water tank to the nozzle part, but since the piping from the hot water tank to the nozzle part and the nozzle part are made of metal and are at a lower temperature than the hot water, it is necessary to clean the nozzle part. Heat is removed from the hot water in the flow path until it is ejected from the ejection hole provided in the cylinder, and as a result, cold water is ejected from the ejection hole. In other words, the cause of cold water gushing out is heat loss in the path after the hot water tank, and conventional toilet bowls with a private part cleaning function have no countermeasures, making them very uncomfortable to use.

The present invention was devised to eliminate the above-mentioned drawbacks, and provides a toilet bowl that always sprays cleansing water at an appropriate temperature and has a comfortable private part cleaning function.
The toilet bowl has a private parts cleaning function, which is characterized by having a water shutoff valve that opens and closes the cold water drain hole using a temperature-sensitive body made of a shape memory alloy in the cleaning cylinder of the toilet bowl, which has a private parts cleaning function. be.

Shape memory alloys are titanium/nickel alloys, copper/
Aluminum/zinc alloys, etc., have the property of undergoing reversible martensitic transformation between the parent phase and martensite phase and changing shape when the temperature changes due to heating or cooling. Even if a certain shape is given in the martensitic phase, when the temperature rises and the metal returns to the parent phase, it returns to the shape memorized in the parent phase. Therefore, unlike bimetal, the shape can be determined freely.

The present invention will be explained in detail below using the drawings.

FIG. 2 is a cross-sectional view of a cleaning cylinder 1 according to an embodiment of the present invention. The cleaning cylinder 1 has a hollow interior and has several spout holes 3 at the top of the tip from which cleaning water is spouted. A water stop valve 4 made of an elastic material and having an open hole at a slight angle with respect to the axial direction of the cleaning cylinder 1 is attached to the cleaning cylinder 1 with a torsion spring 6. When the water stop valve 4 receives water pressure, it rotates downward and moves to a position where the cold water drain hole 2 is closed unless the temperature sensing element 5 comes into contact with it. When the water pressure disappears, the torsion spring 6 returns it to its original position. Further, at the tip of the cleaning cylinder 1, a cold water drainage hole 2 for discharging cold water is formed with an opening area larger than the total opening area of the jetting holes 3. In addition, the lower part of the water stop valve 4 is equipped with Cu-Al-Zn.
A rod-shaped temperature sensing element 5 made of a shape memory alloy is erected and tilted in the direction in which hot water is sent. When the temperature sensor 5 senses a temperature higher than a preset temperature, it bends and deforms in the direction in which hot water is sent, and returns to its original position when the temperature falls below the set temperature.

Next, the operation will be explained. By operating the cleaning lever, hot water is sent from the hot water tank to the cavity of the cleaning cylinder 1, but in the initial stage, cold water is sent due to heat loss in the flow path. Then, the water stop valve 4 receives water pressure and begins to rotate downward, but the temperature sensing element 5
It touches and stops moving. The cold water drain hole 2 is the spout hole 3
Since the opening area is larger than the opening area of , cold water is prevented from spouting from the spouting hole 3 and is discharged from the cold water drain hole 2. After that, when hot water is sent into the cavity 7 in the cylinder 1, the temperature sensing element 5 made of a shape memory alloy senses the set temperature, deforms its shape and bends in the direction in which the hot water is sent, and the water stop valve 4 is rotated by water pressure and moved to a position where the cold water drain hole 2 is closed as shown in FIG. 3, and hot water is prevented from being discharged from the cold water drain hole 2. Therefore, the pressure inside the cavity 7 increases, and hot water starts to be ejected from the ejection hole 3. Thereafter, when the supply of hot water is stopped by the operation switch, the pressure inside the cavity 7 of the cylinder decreases, the water stop valve 4 returns to its original state, and the cold water drain hole 2 becomes open. The temperature sensing element 5 also gradually returns to its original position when the temperature in the cavity 7 falls below the set temperature. In the case of continuous use, since the temperature sensor 5 has not yet returned to its original position, the water stop valve 4 receives the pressure of the hot water and closes the cold water drain hole 2, and hot water is continuously jetted out from the spout hole 3.

FIG. 4 shows another embodiment in which a temperature sensing element and a water stop valve are integrated.

A water stop valve is integrally attached to the side of the temperature sensing element 5 facing the cold water drain hole, and the temperature sensing element 5 is a temperature sensing element 5 made of a shape memory alloy shaped like a rectangle at the tip of the cleaning cylinder 1. It is installed at a slight angle from the axial direction of the cylinder, and when the temperature exceeds the set temperature, the temperature sensing element deforms and the bent part expands in a dogleg shape.

To explain the operation, cold water first comes into the cavity, but at this time, the opening area of the cold water drain hole 2 provided at the tip of the cylinder 1 is larger than the opening area of the spout hole 3, so the cold water flows through the cold water drain hole. It is discharged from 2. After that, when hot water is sent and reaches the set temperature, the temperature sensing element 5 deforms so that the bent part extends the cold water drain hole 2 to the position where the water stop valve 4 closes, and the temperature sensing element 5 and the water stop valve 4 are deformed.
Since it is integrated, the water stop valve 4 is also connected to the cold water drain hole 2 at the same time.
, hot water begins to spout from the spout hole 3.

After that, when the operation switch is operated to stop the supply of hot water, the temperature inside the cavity 7 decreases, and when the temperature falls below the set temperature, the temperature sensor 5 returns to its original position and the low-temperature water is discharged from the cold water drain hole 2. Ru. During continuous use, the water stop valve 4 keeps the cold water drain hole 2 closed, so that hot water is spouted from the spout hole 3 without wastage from the beginning.

As described above, the present invention provides a water stop valve that opens and closes the cold water drain hole and is integrated with a temperature sensing element made of a shape memory alloy, so that even when used after a certain period of time, The initial cold water is discharged from the cold water drain hole, and when the temperature reaches the set temperature, the shape memory alloy senses the temperature and activates the water stop valve to automatically stop the discharge, making it possible to spout hot water from the spout hole. Ta. In addition, even after continuous use, the shape memory alloy senses the temperature and the water stop valve shuts off the hot water at the cold water drain hole while keeping the cold water drain hole closed, so when you operate the cleaning lever, hot water is spouted from the spout hole without waste. It is of great value.

[Brief explanation of the drawing]

Figure 1 is a cross-sectional view of a conventional cleaning nozzle, Figure 2 is a cross-sectional view of a cleaning cylinder according to an embodiment of the present invention, and Figure 3 is a cross-sectional view of a cleaning cylinder in a state where hot water is spouted. 4 is a sectional view of a cleaning cylinder according to another embodiment of the present invention. 1...Cleaning cylinder, 2...Drain hole, 3...
...Blowout hole, 4...Water stop valve, 5...Temperature sensing element, 7...
cavity.

Claims (1)

[Scope of utility model registration request] 1. A toilet bowl having a private parts cleaning function, characterized in that the flushing cylinder of the toilet bowl having a private parts cleaning function is provided with a water stop valve that opens and closes a cold water drain hole using a temperature sensitive body made of a shape memory alloy.