JPS5931815Y2 - flush toilet - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to a flush toilet with a drain trap.

The applicant of the present invention previously filed an application for a flush toilet 1 as shown in FIG.

In this prior application, a cleaning passage 4 is extended upward from the top part 3 of the drain trap 2, the upper end of the passage 4 is connected to a flange part 5 on the upper outer periphery of the toilet bowl 1, and an opening/closing lid 6 is attached to the upper end of the cleaning passage 4. A cleaning lower is provided.

According to the invention of this prior application, the inside of the upper bent portion 9 located directly above the drain port 8 of the drain trap 2 can be cleaned very easily from the cleaning lower directly, making the ordinary maintenance work more convenient. It has the advantage of being able to achieve

However, it has been found that in this prior application, excess air is trapped in the passageway 4, which tends to impede the smooth discharge of waste from the toilet bowl.

That is, when flushing water is discharged to flush out the filth in the toilet bowl, the sewage containing the filth first falls into the lower bent portion 10 of the drain trap 2 and is then pushed up to the upper bent portion 9. After that, it falls into the drain 8.

At this time, since the structure of the pipe from the drain trap 2 to the drain port 8 via the upper bending part 9 is configured as a Venturi pipe structure, the waste water climbs over the upper bend part 9 and falls into the drain port 8 in a full state. At this time, suction force acts on the drain trap 2.

Thereafter, the suction force causes the wastewater in the drain trap 2 to be smoothly discharged to the drain port 8.

However, if excess air is trapped in the passage 4, the suction effect becomes insufficient and the smooth discharge of the waste water is likely to be hindered.

The present invention further improves the above-mentioned deficiencies of the prior invention, and provides a device that can always discharge waste from the toilet bowl extremely smoothly without losing the convenience of normal maintenance work mentioned above. This is what I am trying to do.

An embodiment of the present invention will be described below with reference to FIG.

Note that structural parts similar to those in FIG. 1 are denoted by the same reference numerals, and explanations thereof will be omitted.

That is, the inner circumferential surface of the opening 12 in the top portion 3 of the drain trap 2 is formed into a valve seat 13, and an inner lid 14 is provided which is inserted into the valve seat 13 from above and is tightly sealed.

The inner lid 14 is connected to the opening/closing lid 6 by a chain, wire, link, rod or other suitable connector 15.

However, by levering the top part 3 of the drain trap 2 onto the inner lid 1
If configured to be sealed by 4, the drain trap 2
Since no air pockets are formed in the inner upper part, the suction action in the two parts of the drain trap mentioned above is always carried out extremely reliably.
The waste in the toilet bowl can always be discharged very smoothly.

Note that when the opening/closing lid 6 is removed from the cleaning lower to clean the inside of the upper bent portion 9 of the drain trap 2, the inner lid 14 can also be removed together with the opening/closing lid 6 via the connector 15, which is very convenient. It is.

Furthermore, if the inner cover 14 is made of a spherical body as shown in the figure and has a structure that allows it to be tightly attached to the valve seat 13 by its own weight, the inner cover 14 can be inserted into the passage 4 and the opening/closing cover 6 can be opened. The inner cover 14 can be automatically attached to the opening 12 by simply screwing it into the cleaning lower, which is very convenient.

In addition, the inner lid 14 referred to in the present invention is not limited to the above-mentioned spherical shape, but may have a hemispherical shape, 9 conical shapes, 9 cylindrical shapes, 9 disc shapes,
Various structures such as square type can be adopted.

Further, the inner lid 14 may be provided integrally with the lower end of the opening/closing lid 6, and in this case, the inner lid 14 may also be configured to be screwed in like the opening/closing lid 6.

Further, the cleaning lower can be installed at any of the rear, front, right and left sides of the toilet bowl 1, and the passage 4 does not necessarily have to be vertical, but may be appropriately inclined.

As described above, according to the present invention, the inside of the upper bent part of the toilet bowl drain trap can be cleaned directly and extremely easily from the cleaning opening, making routine maintenance operations more convenient. Without losing this advantage, there is no possibility of air pockets forming in the upper part of the drain trap that would obstruct the suction action of the drain trap, unlike the previous invention, so when discharging waste from the toilet bowl. This has the great advantage that the suction action in the drain trap can always be performed reliably, and the waste can be discharged very smoothly at all times.

[Brief explanation of the drawing]

FIG. 1 is a partially cutaway side view of the prior invention, and FIG. 2 is a partially cutaway side view of the present invention. Also, in the symbols used in the drawings, 1 is a flush toilet, 2 is a drain trap, 3 is a drain tray (the top of the tube), 4 is a drain trap, and 4 is a drain trap.
1 is a passage, 6 is an opening/closing lid, 7 is a cleaning port, 9 is an upper bent part of the drain trap, 12 is an opening at the top, 13 is a valve seat, 14
1 is an inner lid, and 15 is a connector.

Claims (2)

[Scope of utility model registration request] (1) In a toilet comprising a cleaning passage extending upward from the top of the drain trap of the toilet, and a cleaning opening with an opening/closing lid provided at the top end of the passage, the toilet near the top of the drain trap is provided with a cleaning passage extending upward from the top of the toilet. A flush toilet characterized by having an inner lid for sealing. (2) The water-washing type according to claim 1 of the utility model registration claim, wherein the inner lid is connected to the opening/closing lid, and the inner lid is configured to be detachable together with the opening/closing lid.