JP2592096B2 - Flush toilet - Google Patents

Description

Description: TECHNICAL FIELD The present invention relates to a flush toilet configured to clean a bowl portion of a toilet bowl with supplied flush water.

(Prior Art) For example, a flush toilet is known in which flush water is supplied by operating a flush valve or the like to wash a toilet after use of the toilet.

In such a flush toilet, the flushing water causes a siphon action in a trap section provided in the toilet, so that the discharging power thereof is increased, and the cleaning effect in the ball section is enhanced.

(Problems to be Solved by the Invention) By the way, in order to cause the siphon action to occur, at least the drainage passage from the trap portion to a part of the drainage pipe is not filled with water or communicated with water. However, in such a conventional flush toilet, since the flush water can be drained from the drain pipe even before the drainage channel is filled with water, There has been a problem that the supply of cleaning water far exceeding the amount of drainage is required, and therefore the amount of cleaning water used is increased.

(Means for Solving the Problems) In order to solve such a conventional problem, the present invention uses a washing water supply means 9 or the like to siphon the washing water supplied into the ball portion 1a of the toilet 1 into a trap portion 1c. In a flush toilet that is woken up and discharged from the drain pipe 2, the drain pipe 2 is provided with a control valve 4 for adjusting the degree of opening and closing of the drain pipe 2. A bypass opening / closing valve for opening / closing the bypass;
While providing 19a, a water amount detecting means 10 for detecting the amount of washing water supplied into the ball portion 1a by the washing water supplying means 9
At the start of washing, the control valve 4 is driven to the closed side to supply washing water, and the bypass opening / closing valve 19a is opened, so that the water amount in the ball portion 1a based on the output signal of the water amount detecting means 10 is reduced. When a predetermined amount is reached, the control valve 4
Is driven to the open side to drain the water and to close the bypass on-off valve 19a.

(Operation) According to such a configuration, the amount of water discharged from the trap portion to the drain pipe can be minimized before the water required to cause the siphon action accumulates in the trap portion. In addition, since the bypass bleeds the air in the trap portion as the water accumulates in the trap portion, the trap portion is easily filled with water, so that the siphon action can be effectively generated with a small amount of water.

Embodiment An embodiment of the present invention will be described below with reference to the accompanying drawings.

FIG. 1 is a configuration diagram showing a flush toilet according to an embodiment of the present invention.

In the figure, 1 indicates a toilet bowl, 2 indicates a drain pipe, and 3 indicates a water supply pipe. The toilet 1 has a double structure at the upper end of a ball portion 1a, and is formed with a flowing water passage portion 1b that guides washing water supplied from a water supply pipe 3 into the ball portion. Also this ball part 1a
A trap portion 1c is formed on a side portion of the ball portion 1a for guiding cleaning water upward once from the bottom of the ball portion 1a.
The control valve 4 according to the present invention is provided between the drain pipe 2 and the drain pipe 2, and a bypass 19 that bypasses the control valve 4 is provided from the trap portion 1 c to the drain pipe 2. A bypass on-off valve 19a for opening and closing the bypass 19 is provided.

As shown in FIGS. 2 and 3, the control valve 4 is provided with a rubber 6 on an inner peripheral portion of a substantially barrel-shaped tubular body 5 interposed between the trap portion 1c and the drain pipe 2. At the same time, the upper and lower edges 6a, 6b of the rubber 6 are brought into close contact with the upper and lower locking portions 5a, 5b of the cylindrical body 5, and water is supplied between the rubber 6 and the cylindrical body 5 by a three-way valve 7. Alternatively, the three-way valve 7 is driven by control means 8 disposed at an appropriate position in the toilet. Thus, according to the control valve 4, when the water flows in through the three-way valve 7, the rubber 6 swells inward in the radial direction of the cylindrical body 5 as shown in FIGS. The valve 4 is closed and the control valve 4 is opened by discharging water.

It should be noted that the rubber 6 can be enhanced in its strength by forming a Teflon net on its outer surface. In the structure, fins 6c are formed at the lower part as shown in FIG. By making the fins 6c protrude inward in the radial direction at the time of bulging, the degree of throttle (closing amount) can be efficiently increased.

When the trap 19 is filled with water, the bypass 19 removes air trapped in the upper portion of the trap to efficiently perform a siphon action. You.

The water supply pipe 3 guides washing water to the toilet 1, and an opening / closing valve 9 for opening and closing the water supply pipe 3 is provided at an appropriate position, and the opening and closing valve 9 and the toilet 1 according to the present invention are provided between the opening and closing valve 9 and the toilet 1. Water amount detecting means 10 is provided.

The on-off valve 9 is controlled by a control means 8 based on, for example, a predetermined switch operation by a toilet user or a detection signal of the user.
It is composed of an electromagnetic valve or an electric valve driven by
The water amount detecting means 10 is constituted by, for example, a flow rate sensor using an impeller or the like, and a detection signal thereof is output to the control means 8. Thus, the water amount detecting means 10 detects the amount of washing water supplied to the toilet by detecting the flow rate from the start of water supply by the on-off valve 9, and the on-off valve 9 and the control means 8. Etc. constitute the cleaning water supply means according to the present invention.

FIG. 5 is a flowchart showing the operation of the present embodiment in the above configuration, and the operation of the present embodiment will be described below with reference to FIG.

As described above, when the cleaning operation is started based on the predetermined cleaning operation by the user or the detection signal of the user, the control means 8 first opens the three-way valve 7 to the control valve side to open the control valve 4. Is closed (step 11), then the bypass on-off valve 19a is opened [step 12], and the on-off valve 9 is opened to start water supply [step 13]. Thereafter, the flow rate is a predetermined value based on the output signal of the water amount detection means 10, that is, the water level in the ball portion is higher than the height of the uppermost portion 1d of the trap portion 1c by a predetermined value, and the trap portion 1c is filled with the washing water. It is determined whether [14Y] has reached the value C1 or not [14N] [Step 14], and if the value has reached the predetermined value [14]
In [Y], the three-way valve 7 is switched to the drain side together with the closing of the bypass on-off valve 19a [Step 15] [Step 16], and the water in the valve body is drained to open the control valve 4 to the open side. The discharge of water can be automatically performed only by switching the three-way valve 7 to the drain side by the elastic force of the rubber and the water pressure in the trap portion. Then, after a while, the [17Y] on-off valve 16 is closed to stop the water supply on condition that the supply amount of the wash water becomes the predetermined value C2 again by the output signal of the water amount detection means 10, and a series of washing operations is completed. .

Although water is flowed between the rubber 6 and the cylindrical body 5, the liquid is not limited to water, and another liquid or a gas such as pressurized air may be injected.

Thus, according to the present embodiment, since the control valve 4 is closed and the washing water is supplied while evacuating the trap portion by the bypass 19, the trap portion can be sufficiently filled with water. Then, since the control valve 4 is opened, the siphon action can be effectively generated without supplying a large amount of water, and the washing can be efficiently performed.

As mentioned above, although one Example of this invention was shown, this invention is not limited to such Example, For example, as a control valve, other than the said Example, a mode as shown in FIG. 6 thru | or FIG. It can also be.

6 and 7 show a ball valve, and FIG.
FIG. 3 shows a sectional view taken along line BB of FIG. In this embodiment, the drain pipe 2 is opened and closed by rotating the ball valve 21 by the motor 20 driven by the control means. In the figure, reference numerals 22 and 23 denote sealing materials.

FIG. 8 shows a control valve using a shape memory alloy. A ninth valve is provided between a rubber 24 provided in substantially the same manner as shown in FIG. 3 and a wall surface 2a of a cylindrical body (drain pipe 2). The coil-shaped shape memory alloys 25 and 26 shown in FIGS. 10 and 10 are provided coaxially. The shape memory alloy 25 shown in FIG. 9 has a cylindrical shape when heated, and has a shape shown in FIG. The shape of the memory alloy 26 is memorized so as to be substantially continuous when heated. When the memory alloy 26 is opened, the shape memory alloy 25 shown in FIG. 9 is energized and heated. On the other hand, when the memory alloy 26 is closed, the shape memory alloy 26 shown in FIG. The control valve 4 is heated by energizing the control valve 4 to open or close the control valve 4, respectively.

11 and 12 show a shutter valve, and FIG.
It has shown the CC sectional view taken on the figure. The control valve 4 opens and closes the shutter 29 by rotating a ring member 28 by a motor 27, and opens and closes the drain pipe 2 via a rubber 30 for sealing.

The control valve 4 shown in FIG. 13 connects the rubber 31 to the inner wall 2a of the drain pipe 2.
The rubber 31 is expanded by the same three-way valve 32 as shown in FIG. 2 to open and close the drain pipe 2.

14 and 15 show a butterfly valve, and FIG.
It shows the DD sectional view of the figure. The control valve 4 opens and closes the drain pipe 2 by rotating a butterfly valve 33 by a motor 34 in the same manner as the ball valve described above.

And FIG. 16 moves the movable iron piece 35 between the coils 36,
The flat valve 35a provided at the end thereof is moved forward and backward with respect to the drain pipe 2 to open and close the drain pipe 2.

The above is another embodiment of the control valve of the present invention.In another embodiment of the water amount detecting means 10 of the present invention, as shown in FIG. 17, a water level is applied to the bottom of the ball portion 1a. The pressure sensor 10B may be provided to detect the pressure.

Further, as a structure of the bypass, a trap portion 19b is provided in the bypass 19 as shown in FIG. 18 so as to provide an odor preventing effect, or a check valve 38 as shown in FIG. It may be provided.

(Effects of the Invention) As is clear from the above description, according to the present invention, since the control valve is closed and the trap portion is filled with the washing water while bleeding air, the siphon is provided in the trap portion. Water can be effectively stored to cause the action, and then the control valve is opened, so that even a small amount of washing water can effectively produce a siphon action, enhancing the washing effect and conserving water. An excellent flush toilet can be provided.

[Brief description of the drawings]

1 is a structural view showing a flush toilet according to the present invention, FIG. 2 is a longitudinal sectional view showing a control valve, FIG. 3 is a sectional view taken along line AA of FIG. 2, and FIG. FIG. 5 is a flowchart showing an example, FIGS. 6 to 16 are diagrams showing another embodiment of the control valve, FIG. 17 is a diagram showing another embodiment of the water amount detecting means, and FIG.
FIG. 19 is a view showing another embodiment of the bypass structure. In the drawing, 1 is a toilet bowl, 1a is a ball portion, 1c is a trap portion, 2 is a drain pipe, 4 is a control valve, 8 is a control means, 9 is an on-off valve, 10 is a water amount detection means, 19 is a bypass, 19a is a This is a bypass on-off valve.

 ──────────────────────────────────────────────────続 き Continuation of the front page (72) Inventor Hirofumi Takeuchi 2-6-1, Motomura, Chigasaki-shi, Kanagawa Prefecture Tochiki Kikai Co., Ltd. Chigasaki Plant (56) References JP-A-53-110238 (JP, A) Kaisho 55-168584 (JP, U)

Claims (5)

(57) [Claims] 1. A flush toilet in which flush water supplied into a bowl portion of a toilet bowl by a flush water supply means is caused to siphon at a trap portion and discharged from a drain pipe. A control valve for adjusting the opening / closing degree of the cleaning water is provided, and a water amount detecting means for detecting a cleaning water amount supplied into the ball portion by the cleaning water supply means is provided. Supply,
A flush toilet comprising a control means for driving the control valve to the open side to drain the water when the water amount in the ball portion becomes a predetermined amount based on the output signal of the water amount detection means. 2. A bypass which bypasses the control valve from the trap section to the drain pipe is provided. The bypass includes a bypass opening / closing valve for opening / closing the bypass, and drives the control valve to a closed side at the start of cleaning. When the amount of water in the ball portion becomes a predetermined amount based on the output signal of the water amount detecting means, the control valve is driven to the open side to drain water, and the bypass valve is opened. 2. A flush toilet according to claim 1, further comprising control means for performing the above operation and closing the bypass on-off valve. 3. The flush toilet according to claim 1, wherein said water amount detecting means is a flow rate sensor for detecting a flow rate of washing water. 4. The flush toilet according to claim 1, wherein the water amount detecting means is a pressure sensor provided at a bottom portion in the ball portion and detecting a water pressure. 5. The flush toilet according to claim 2, wherein a trap portion is formed in the bypass.