JP-7855162-B2 - flush toilet

JP7855162B2JP 7855162 B2JP7855162 B2JP 7855162B2JP-7855162-B2

Inventors

山崎聖
高野賢一
坂場勇
橋本博

Assignees

ＴＯＴＯ株式会社

Dates

Publication Date: 20260508
Application Date: 20220225

Claims (4)

A flush toilet that is cleaned and discharges waste using flushing water supplied from a flushing water source, A bowl-shaped waste receiving surface, a rim formed above the waste receiving surface, and a pot-shaped section provided below the waste receiving surface to form a water reservoir, the bowl section comprising these, A rim water channel is provided inside the rim portion on one side of the central axis of the bowl portion in the left-right direction, and guides the cleaning water supplied from the cleaning water source to the bowl portion side. This rim water channel includes a rim discharge port located at the downstream end of the rim water channel, and a rim discharge section that discharges the cleaning water from the rim water channel into the bowl section from the rim discharge port to form a swirling flow, The rim water channel comprises a rear water channel provided behind and upstream of the rear water channel, a front water channel provided ahead and downstream of the rear water channel, and a bent water channel that extends from the downstream end of the rear water channel toward the outside of the rim, then bends toward the inside of the rim and connects to the upstream end of the front water channel, and the rim discharge port is provided at the downstream end of the front water channel and configured to discharge water toward the rear. The above-mentioned curved water conduit comprises an upward section that rises in the direction of its flow path, a highest section provided downstream of the upward section and including the highest bottom surface which is the highest position on the entire bottom surface of the rim water conduit, and a downward section provided downstream of the highest section and including a downward bottom surface which descends from the downstream end of the highest bottom surface to the upstream end of the forward water conduit . The descending section of the curved water channel further includes a top surface provided above the descending bottom surface, and this top surface is equipped with a descending top surface that descends from the upstream side to the downstream side, and the downward slope angle of the descending top surface with respect to the horizontal plane is set to be greater than the downward slope angle of the descending bottom surface with respect to the horizontal plane, characterized in that a flush toilet.
The flush toilet according to claim 1, wherein the above-mentioned curved water channel further includes a maximum curvature section where the radius of curvature in a plan view on its inner circumferential surface is minimized, and the highest section is located upstream of the maximum curvature section.
The flush toilet according to claim 1 or 2, wherein the rim water outlet further includes a stepped portion provided near the downstream side of the rim water outlet, and this stepped portion forms an opening area that is expanded upward from the opening area of the rim water outlet.
A flush toilet that is cleaned and discharges waste using flushing water supplied from a flushing water source, A bowl-shaped waste receiving surface, a rim formed above the waste receiving surface, and a pot-shaped section provided below the waste receiving surface to form a water reservoir, the bowl section comprising these, A rim water channel is provided inside the rim portion on one side of the central axis of the bowl portion in the left-right direction, and guides the cleaning water supplied from the cleaning water source to the bowl portion side. This rim water channel includes a rim discharge port located at the downstream end of the rim water channel, and a rim discharge section that discharges the cleaning water from the rim water channel into the bowl section from the rim discharge port to form a swirling flow, The rim water channel comprises a rear water channel provided behind and upstream of the rear water channel, a front water channel provided ahead and downstream of the rear water channel, and a bent water channel that extends from the downstream end of the rear water channel toward the outside of the rim, then bends toward the inside of the rim and connects to the upstream end of the front water channel, and the rim discharge port is provided at the downstream end of the front water channel and configured to discharge water toward the rear. The above-mentioned curved water conduit comprises an upward section that rises in the direction of its flow path, a highest section provided downstream of the upward section and including the highest bottom surface which is the highest position on the entire bottom surface of the rim water conduit, and a downward section provided downstream of the highest section and including a downward bottom surface which descends from the downstream end of the highest bottom surface to the upstream end of the forward water conduit. The descending bottom surface of the descending section of the above-mentioned curved water conduit is a first descending bottom surface, and the forward water conduit includes a second descending bottom surface that descends from the downstream end of the first descending bottom surface of the descending section of the above-mentioned curved water conduit to the rim discharge port. A flush toilet characterized in that the downward slope angle of the bottom surface of the rim water outlet, from the upstream side to the downstream side, relative to the horizontal plane, is set to be smaller than the downward slope angle of the first downward bottom surface or the second downward bottom surface relative to the horizontal plane.

Description

This invention relates to a flush toilet, and more particularly to a flush toilet that uses flushing water to wash away waste. Conventionally, as a flush toilet that washes away waste with flushing water, for example, as described in Patent Document 1, there is a rim water channel provided inside the rim of the toilet bowl body, and flushing water is discharged into the bowl from the rim outlet at the downstream end of this rim water channel to form a swirling flow. Furthermore, in the conventional flush toilet described above, the rim water channel comprises a bent channel whose flow path curves and extends to the rim outlet, and an upstream channel formed on the upstream side of this bent channel, and at the downstream end of this upstream channel, a channel expansion section is formed in which the cross-sectional area of the channel expands toward the downstream side. Furthermore, the cleaning water in the upstream channel of the rim water channel flows into the bent channel with a reduced flow velocity after passing through the channel widening section. This suppresses the occurrence of bubble bursting and turbulence when the cleaning water flows into the bent channel. Japanese Patent Publication No. 2020-26699 This is a schematic plan view of a flush toilet according to one embodiment of the present invention.This is a side cross-sectional view along line II-II in Figure 1.Figure 1 is a schematic plan view of a flush toilet according to one embodiment of the present invention, and is a partially enlarged plan view showing an enlarged portion of the second rim water channel of the toilet body.This is a cross-sectional view along the line IV-IV in Figure 3.This is a cross-sectional view along the line V-V in Figure 3.This is a cross-sectional view along the line VI-VI in Figure 3.This is a cross-sectional view along the line VII-VII in Figure 3. A flush toilet according to one embodiment of the present invention will be described below with reference to the attached drawings. First, Figure 1 is a schematic plan view of a flush toilet according to one embodiment of the present invention. Figure 2 is a side cross-sectional view taken along line II-II in Figure 1. As shown in Figures 1 and 2, a flush toilet 1 according to one embodiment of the present invention comprises a ceramic toilet bowl body 2. The toilet body 2 comprises a water channel 4, a bowl-shaped bowl section 6, and a drain trap section 8 with an inlet 8a connected below the bowl section 6, extending from the upstream side to the downstream side. As a result, the flush toilet 1 according to one embodiment of the present invention is a so-called "siphon-type flush toilet" that uses the siphon action to suck up the waste in the bowl 6 and discharge it to the outside all at once from the drain trap 8. Furthermore, the flush toilet 1 according to one embodiment of the present invention is not limited to the form of a siphon-type flush toilet, but can also be applied to the form of a so-called "wash-down type flush toilet" that washes away waste with the flowing water action caused by the difference in water pressure within the bowl. Furthermore, in the flush toilet 1 of this embodiment shown in Figures 1 and 2, a toilet seat (not shown) and a toilet lid (not shown) are provided on the upper surface of the toilet body 2, but since this is the same as the structure of a conventional flush toilet, a detailed explanation will be omitted. Furthermore, on the upper surface of the toilet bowl 2, behind the toilet seat (not shown) and toilet lid (not shown), functional parts (not shown) such as a sanitary washing section (not shown) for washing the user's private parts and a water supply system functional section involved in the water supply function to the toilet bowl 2 may be provided. However, since these are the same as the structure of conventional flush toilets, a detailed explanation will be omitted. Next, as shown in Figure 1, a flush toilet 1 according to one embodiment of the present invention is equipped with a gravity-fed water storage tank 10, which is a water source for flushing toilets, storing the flushing water used for flushing the toilet bowl and supplying it to the toilet bowl body 2. In this embodiment, the water source that supplies flushing water to the toilet bowl 2 is not limited to a tank-type configuration such as the gravity-fed water storage tank 10 described above, but can be applied to other configurations as well. That is, the water source that supplies flushing water to the toilet bowl 2 may be a direct-pressure type configuration that directly utilizes the water supply pressure of the tap water, a flush valve type configuration, or a configuration that supplies flushing water using the supplemental pressure of a pump. Next, in the flush toilet 1 according to one embodiment of the present invention shown in Figure 1, in a plan view of the bowl portion 6 of the toilet body 2, the central axis extending horizontally to the l