JPH0634452Y2 - One-piece toilet bowl - Google Patents

Description

[Detailed Description of the Invention] [Industrial field of application] The present invention relates to a one-piece toilet bowl in which a tank for storing flush water and a toilet bowl are integrally formed, and in particular, the backflow of water from the toilet bowl to the tank The present invention relates to a one-piece toilet bowl improved to be prevented.

[Prior Art] In a one-piece toilet bowl, a tank for storing flush water and a toilet bowl are integrally formed. An outflow port is provided at the bottom of the tank, and washing water can be supplied from the tank to the toilet bowl by a water channel. The outlet at the bottom of the tank is opened and closed by a valve body (for example, US Pat. No. 2,923,012).

[Problems to be Solved by the Invention] In the conventional one-piece toilet bowl, since the installation level of the outlet is low, the water in the toilet bowl may flow back into the tank through the water channel.

[Means for Solving the Problems] A one-piece toilet bowl of the present invention is a one-piece toilet in which a tank for storing flush water and a toilet bowl are integrally formed, and a water passage extending from an outlet at the bottom of the tank toward the toilet bowl. In the toilet bowl,
A pumping channel that rises from the outlet at the bottom of the tank to a position above the full surface of the toilet bowl, and then falls to near the bottom of the tank, and a valve seat for opening and closing the pumping channel provided at the top of the pumping channel. And a float valve seated on the valve seat, and an opening provided on the flow passage wall of the pumping flow passage above the valve seat and closed by the float valve when the float valve rises. It is characterized by that.

[Operation] In such a one-piece toilet bowl of the present invention, when the water is sufficiently stored in the tank, the float valve is seated on the valve seat, and the float valve is pressed against the valve seat by water pressure. The toilet bowl and tank are completely isolated. (Hereinafter, this state may be referred to as an initial state.) When the float valve is lifted, the float valve rises due to buoyancy and closes the upper opening of the pumping flow passage. Then, the pumping flow passage becomes a siphon flow passage extending from the suction port opened in the tank to the flow outlet at the bottom of the tank, and the water in the tank continuously flows out until the level of the suction port is lowered.

When the water level in the tank has dropped to the suction port level, air flows into the pumping flow passage. As a result, the float valve loses buoyancy and sits on the valve seat.

When the water level in the tank drops to a certain level, water supply from the water supply mechanism is started. As described above, after the flush water has finished flowing from the tank to the toilet bowl and the float valve has been seated on the valve seat, the water level in the tank gradually rises. At this time, since the upper opening of the pumping flow passage is open, water also enters the pumping flow passage between the suction port and the float valve. After that, the pumping flow passage is filled with water, the water supply is stopped, and the inside of the tank is in the initial state.

Embodiments Embodiments will be described below with reference to the drawings.

FIG. 1 is a vertical cross-sectional view of a one-piece toilet bowl 10 according to an embodiment of the present invention, and FIG. 2 is a plan view (however, the tank lid is removed to show the internal structure of the tank). 3 and 4 are side views showing the water supply mechanism, FIG. 5 is a plan sectional view of the water supply mechanism (showing the main part of the level cross section taken along the line VV in FIG. 3), and FIG. 9 is a perspective view of the valve 39. FIG. 7th
FIG. 8, FIG. 8 and FIG. 9 are operation explanatory views of the one-piece toilet bowl according to the embodiment.

The one-piece toilet bowl 10 is integrally provided with a toilet bowl 11 and a tank 12 for storing wash water. An outlet 13 is provided at the bottom of the tank 12 and is connected to the toilet bowl 11 by a water channel 14.

In the one-piece toilet bowl 10 according to the present embodiment, the outlet
A pumping flow path 16 is connected to 13. This pumping channel 16 is
A vertical rising pipe 17 and a valve connected to the upper part of the rising pipe 17.
18 and a falling pipe 19 that is provided integrally with the valve 18 and that descends downward. Suction port 19a at the lower end of this falling pipe 19
Is near the bottom surface 2B of the tank 2. A valve seat 20 is provided on the upper end of the rising pipe 17, and a float valve 21 can be seated. Reference numeral 21a is a guide shaft fixed to the float valve 21, and a lower portion thereof can be guided by the guide member 22. The guide member 22 is fixed to an intermediate portion inside the rising pipe 17.

An opening 23 is provided above the valve seat 18 and above the valve seat 20. The shape of the opening 23 on the inner surface side of the valve 18 is
It has a shape that follows the upper surface of the float valve 21, and is configured so that the opening 23 can be closed exactly when the float valve 21 rises. Reference numeral 24 indicates a chain connected to the float valve 21.

The configuration of other devices in the tank 2 will be described mainly with reference to FIGS. 3 to 6.

A ball tap 27 is attached to the side wall 12a of the water storage tank 12. 29 is a mounting hole for the ball tap 27. In the vicinity of the mounting hole 29, a thick portion 30 having a thickened side wall 12a is provided. Reference numeral 31 is a rim supply water passage formed in the thick portion 30 and communicates with the toilet rim portion 32. Reference numeral 33 is an inlet of the rim supply water channel 31.

The discharge port 34 of the ball tap 27 has a vacuum breaker.
The inflow port 37 of the three-port two-way switching valve 36 is connected via 35. The vacuum breaker 35 prevents the wash water from flowing backward due to an abnormality on the primary side of the water supply.

The switching valve 36 includes a valve body 39 inside a cylindrical casing 38. The valve body 39 controls the opening and closing of the outflow port 40 formed in the casing end surface 38a and the outflow port 42 formed in the bottom of the peripheral surface of the casing 38.

As shown in FIG. 6, the valve body 39 has a disc-shaped end plate 43 and a ring-shaped end plate 44, and a columnar body 45 having a fan-shaped cross section is integrally formed between both end plates. The valve body 39 is installed in the casing 38 so that the ring-shaped end plate 44 is located on the outflow port 40 side.

Further, a shaft body 46 is formed on the side surface of the disc-shaped end plate 43 so as to project. An impact boss 49 and a lever 50 are fixed to the outer peripheral surface of the shaft body 46 outside the casing. The flat horn
The 49 and the lever 50 are one piece.

Reference numeral 51 is an operating rod receiver that supports an operating rod 53 (see FIG. 2), and is screwed to the tip end surface of the shaft body 46. This operating rod
An operating handle 52 for operating 53 is provided coaxially with the extension direction of the axis of the shaft body 46, and one end of the operating rod 53 is connected to the operating handle 52.

The operating rod 53 is formed by appropriately bending a plate-like member, and a part of its tip end side is fitted to and supported by the operating rod receiver 51, and the bent end 54 is located below the lever 50. Waiting for

The end of the lever 50 is connected to the float valve 21 via a chain 24. 57 is a flow control valve for the ball tap 27 (not shown)
It is a floating ball that controls.

The water supply port 58 of the ball tap 27 is inserted into the mounting hole 29 and is fixed to the side wall 12a of the water storage tank 12 by a nut 60. The outflow port 40 side of the switching valve 36 is brought into close contact with the side wall 30a of the thick portion 30 via the packing 59. A pipe 61 (see FIG. 1) is connected to the outflow port 42, and the pipe 61 extends to the lower portion of the water storage tank 12.

The state of the inside of the tank before cleaning in the one-piece toilet bowl configured as described above is as shown in FIGS.
That is, the wash water is stored up to a predetermined position in the tank 28, and the flow control valve of the ball tap 27 is controlled by the floating ball 57 to shut off the flow of the supply water.
Further, the float valve 21 is seated on the valve seat 20, and the float valve 21 is pressed against the valve seat 20 by the water pressure, so that the toilet bowl 11
The inside of the tank 12 and the inside of the tank 12 are completely cut off to be in the initial state. In this state, the switching valve 36 is in a state of connecting the inflow port 37 and the outflow port 42.

To wash the toilet bowl 11 by supplying cleaning water to the toilet bowl 11, the operation handle 52 is rotated. Then, the bent end portion 54 of the operating rod 53 rotates the lever 50 counterclockwise in FIG.
Push up to the position shown in Fig. 4. (The operating handle 52 is then returned to its original posture by the weight of the operating rod 53.) When the lever 50 is pushed up, the float valve 21 is lifted via the chain 24, and the float valve 21 separates from the valve seat 20. .

Once the float valve 21 is separated from the valve seat 20, the float valve 20 is lifted by buoyancy and closes the opening 23 in the upper part of the pumping flow passage 16 (valve 18) as shown in FIG. Then, the pumping flow path 16 becomes a siphon flow path from the suction port 19a opened in the tank 12 to the outflow port 13 at the bottom of the tank, and the water in the tank continuously flows out until the level of the suction port 19a decreases. To do.

When the cleaning is started in this manner, the floating balls 57 descend as the water level in the tank 12 decreases. Because of this, the ball tap
The flow rate control valve 27 supplies the supply water according to the position of the floating ball 57.

When the operation handle 52 is rotated toward the water discharge side as described above, the lever 50 is rotated as shown in FIG. 4 and the valve body 39 is also rotated. Then, the valve element 39 closes the outflow port 42 and opens the outflow port 40. That is, the inflow port 37 and the outflow port 40 communicate with each other. Therefore, the water supplied from the ball tap 27 flows into the rim supply water passage 31 from the inflow port 37 of the switching valve 36 through the outflow port 40, and further flows to the toilet rim portion 32 to clean the inner surface of the toilet bowl.

When the water level in the tank 12 has completely dropped to the level of the suction port 19a as shown in FIG. 9, air flows into the pumping flow passage 16 through the suction port 19a. As a result, the float valve 21 loses its buoyancy and sits on the valve seat 20.

Also, with the downward movement of the float valve 21, the lever 50
The rotation returns to the state shown in FIG. With this return rotation of the lever 50, the valve body 39 rotates, and this time the inflow port 37 and the outflow port 42 of the switching valve 36 come into communication with each other, and the supply water from the ball tap 27 flows from the outflow port 42. It flows through the pipe 61 and is stored in the tank 12. At this time, since the opening 23 at the upper part of the pumping flow passage 16 is open, water also enters the pumping flow passage 16 between the suction port 19a and the float valve 21. Then, the water level of the stored water is at a predetermined position (normally, the opening 23
When it reaches the upper level), the flow control valve of the ball tap 27 is closed by the floating ball 57 to stop the water and return to the initial state before use.

Thus, in the one-piece toilet bowl of this embodiment,
Water flows from the tank 12 toward the toilet bowl 11 when the float valve 21 is lifted. Moreover, since the highest level portion 16U of the pumping flow passage 16 is higher than the full water level of the toilet bowl 11 (the upper surface of the toilet bowl 11), the toilet drainage channel 62 is temporarily blocked and water is stored in the toilet bowl 11. However, the water in the toilet bowl 11 does not flow back into the tank 12.

For example, when there is no water in the pumping channel 16 and therefore the siphon action of the pumping channel 16 does not work, the float valve
Even if 21 is lifted, since the level of the highest level portion 16U is higher than the full surface of the toilet bowl 11, no backflow from the toilet bowl 11 occurs.

Further, even when the pumping flow passage 16 is filled with water and therefore the siphon action of the pumping flow passage 16 is effective, the water level in the tank 12 is kept from the tank 12 until it becomes equal to the water level in the toilet bowl. Water continues to flow toward the toilet bowl 11,
There is no backflow from 11 to tank 12.

In the present invention, for example, a check valve may be provided in the riser pipe 17 to prevent backflow from the toilet bowl 11 to the tank 12 in any case.

[Effect of the Invention] As described above, in the one-piece toilet bowl of the present invention, the backflow of water from the toilet bowl to the tank is reliably prevented.

[Brief description of drawings]

FIG. 1 is a vertical sectional view of a one-piece type toilet bowl 10 according to an embodiment of the present invention, FIG. 2 is a plan view, FIGS. 3 and 4 are side views showing a water supply mechanism, and FIG. 5 is a flat view of the water supply mechanism. A sectional view and FIG. 6 are perspective views of the valve 39. FIG. 7, FIG. 8 and FIG. 9 are operation explanatory views of the one-piece toilet bowl according to the embodiment. 11 …… Toilet bowl, 12 …… Tank, 13 …… Outlet at the bottom of tank, 14 …… Water channel, 16 …… Sampling flow path, 17 …… Standing pipe, 18 …… Venue, 19 …… Falling Pipe, 20 …… Valve seat, 21 …… Float valve, 30 …… Thick wall, 32 …… Toilet rim, 31 …… Supply channel, 33 …… Inlet, 27 …… Ball tap, 29 …… Ball tap mounting Hole, 34 …… Ball tap discharge port, 36 …… Three-port two-way switching valve, 37 …… Inflow port, 40,42 …… Outflow port, 52 …… Operation handle.

Claims (1)

[Scope of utility model registration request] 1. A one-piece toilet bowl having a water tank for storing flush water and a toilet bowl integrally formed with the water passage extending from the outlet at the bottom of the tank to the toilet bowl. A pumping channel that rises above the full surface of the bowl and then falls to near the bottom of the tank, a valve seat for opening and closing the pumping channel provided at the top of the pumping channel, and a float that sits on the valve seat. A one-piece toilet bowl, comprising: a valve; and an opening provided on the flow passage wall of the pumping flow passage above the valve seat, the opening being closed by the float valve when the float valve rises.