Abstract: The present invention is a flush toilet apparatus including a flush toilet main body that includes a bowl, a water discharge trap pipe, an upper water discharge port, and a lower water discharge port, and a flush control device configured to execute a large flush mode and a small flush mode, in which the flush control device causes the flush water to be discharged from the lower water discharge port with substantially the same amount in each of the large flush mode and the small flush mode to induce a siphon phenomenon in the water discharge trap pipe, while controlling the water discharge from the upper water discharge port so that a water level of pooled water in the bowl during the water discharge from the lower water discharge port is changed between the large flush mode and the small flush mode.

Abstract: The present invention provides a flush toilet device (1) including: a flush toilet (2); a flush water tank (10); a discharge valve (12) that discharges the flush water stored in the flush water tank; a branching portion (33) that splits flush water supplied from a water supply source into first and second branched flow paths; a first on-off valve (19) provided in the first branched flow path and switches between spout and stop of the flush water from the upper spout port; a second on-off valve (17) provided in the second branched flow path and switches between supply and stop of the flush water into the flush water tank; and a controller (28) that controls the first and second on-off valve so that water is spouted from the upper spout port and is supplied into the flush water tank at a time by opening the first and second on-off valves.

Abstract: A flush toilet according to an embodiment includes a bowl part and a water storage part. The bowl part receives waste. The water storage part is formed on a bottom of the bowl part and is connected to a discharge channel. A first region that is connected to a discharge channel and a second region that is located on a front side of the first region are formed in the water storage part. A curvature of a curved surface of the water storage part that forms the first region in upward and downward directions is different.

Abstract: A flush toilet according to the embodiment includes a main water guide channel, a downstream-side water guide channel, and a convex part. Through the main water guide channel, flush water supplied from a water supply source flows. The downstream-side water guide channel on a downstream side of the main water guide channel spouts the flush water from a water spout port of the downstream-side water guide channel. The convex part is formed in the downstream-side water guide channel. The convex part includes a first guide part that guides upward the flush water flowing through the downstream-side water guide channel, and a second guide part on a downstream side of the first guide part which guides downward the flush water.

Abstract: The flush toilet of the present invention includes a bowl which receives waste; and a discharge trap conduit which is connected to a lower portion of the bowl and extends to a discharge opening connected to an inlet of an external discharge pipe and a part of which stores sealing water. The discharge trap conduit includes: an ascending conduit which ascends rearward from the lower portion of the bowl; and a descending conduit that descends from a downstream end of the ascending conduit to the discharge opening. The descending conduit includes a bottom surface on the rear side of the discharge opening and a guiding portion formed on the bottom surface which guides the wastewater flowing horizontally from the bottom surface toward the discharge opening to be directed to either a left or right side of the center of the discharge opening.

Abstract: A flush toilet according to the embodiment includes a main water guide channel, a downstream-side water guide channel, and a convex part. Through the main water guide channel, flush water supplied from a water supply source flows. The downstream-side water guide channel on a downstream side of the main water guide channel spouts the flush water from a water spout port of the downstream-side water guide channel. The convex part is formed in the downstream-side water guide channel. The convex part includes a first guide part that guides upward the flush water flowing through the downstream-side water guide channel, and a second guide part on a downstream side of the first guide part which guides downward the flush water.

Abstract: A flush toilet of the present invention includes a bowl portion for receiving waste and a discharge trap conduit connected to a lower portion of the bowl portion and extending to a discharge opening. The discharge trap conduit includes an ascending conduit ascending rearward from the lower portion of the bowl portion and a descending conduit descending from a downstream end of the ascending conduit to the discharge opening. The descending conduit includes a bottom surface on a rear side of the discharge opening, and a ceiling sloping surface, an upper end of the ceiling sloping surface being formed integrally with a bottom surface of a top portion of the ascending conduit, the ceiling sloping surface being formed on a front side of the discharge trap passage, and the ceiling sloping surface being inclined downward and forward from the upper end to a lower end of the discharge trap passage.

Abstract: A flush toilet according to an embodiment includes a bowl part and a water storage part. The bowl part receives waste. The water storage part is formed on a bottom of the bowl part and is connected to a discharge channel. A first region that is connected to a discharge channel and a second region that is located on a front side of the first region are formed in the water storage part. A curvature of a curved surface of the water storage part that forms the first region in upward and downward directions is different.

Abstract: A flush toilet of the present invention includes a bowl portion for receiving waste and a discharge trap conduit connected to a lower portion of the bowl portion and extending to a discharge opening. The discharge trap conduit includes an ascending conduit ascending rearward from the lower portion of the bowl portion and a descending conduit descending from a downstream end of the ascending conduit to the discharge opening. The descending conduit includes a bottom surface on a rear side of the discharge opening, and a ceiling sloping surface, an upper end of the ceiling sloping surface being formed integrally with a bottom surface of a top portion of the ascending conduit, the ceiling sloping surface being formed on a front side of the discharge trap passage, and the ceiling sloping surface being inclined downward and forward from the upper end to a lower end of the discharge trap passage.

Abstract: The flush toilet of the present invention includes a bowl which receives waste; and a discharge trap conduit which is connected to a lower portion of the bowl and extends to a discharge opening connected to an inlet of an external discharge pipe and a part of which stores sealing water. The discharge trap conduit includes: an ascending conduit which ascends rearward from the lower portion of the bowl; and a descending conduit that descends from a downstream end of the ascending conduit to the discharge opening. The descending conduit includes a bottom surface on the rear side of the discharge opening and a guiding portion formed on the bottom surface which guides the wastewater flowing horizontally from the bottom surface toward the discharge opening to be directed to either a left or right side of the center of the discharge opening.

Abstract: A toilet according to an embodiment includes a toilet body and a water drainage socket. The toilet body has a water drainage outlet on a back surface thereof. The water drainage socket connects the water drainage outlet and an inlet of a water drainage pipe that is provided on a wall surface. The back surface of the toilet body is provided with an opening and a guide part. The opening is provided to insert therethrough a tubular member that extends from the wall surface in a case where the toilet body is mounted on the wall surface. The guide part guides the tubular member that is provided in a state where it is inserted through the opening so as to move to an outer side of the water drainage socket in a case where the toilet body is mounted on the wall surface.

Abstract: A flush toilet according to an embodiment includes a main water guide channel, a bending water guide channel, a rim water guide channel, and a retention part. The bending water guide channel bends a flow direction of washing water supplied from the main water guide channel. The rim water guide channel causes the washing water to flow toward and to be spouted from a water spout part. The retention part is formed in at least the bending water guide channel. An upper part of the retention part is formed into an opened concave shape and the retention part retains a part of the washing water. Furthermore, the retention part is formed in such a manner that an upper end thereof on a downstream side is horizontal to a bottom surface of the water spout part or higher than the bottom surface of the water spout part.

Abstract: The present invention is a flush toilet (1) including: a bowl portion (8) having a bowl-shaped waste receiving surface (16), a rim portion (18), and a well portion (20) formed at the bottom of the waste receiving surface; a discharge trap pipe (12) connected to the bottom portion of the well portion; a flush water guide portion (40b) disposed on the waste receiving surface at the rear of the well portion so that flush water is directed toward the side wall surface inside the well portion; and a liquid membrane spouting portion (24) disposed on the rim portion, wherein this liquid membrane spouting portion induces a vertical circulating flow in the well portion, produced when discharged flush water assumes a liquid membrane form and collides with a flush water guide portion, and the colliding flush water drops along the side wall surface of the well portion.

Abstract: A wash-out type toilet according to an embodiment includes a bowl that receives waste and a drainage water trap. The drainage water trap includes an inlet that is connected to a lower part of the bowl, a rise pipeline that is connected to the inlet and extends upward toward its own top part, a fall pipeline that extends downward toward an inlet of a drainage water pipe that is arranged on a floor surface, and an intermediate pipeline with an upstream-side portion that is connected to the rise pipeline and a downstream-side portion that is connected to the fall pipeline. Furthermore, the intermediate pipeline includes a retention surface that is formed to slope downward from an upstream side to a downstream side and temporarily retains waste at a time of toilet washing.

Abstract: A toilet according to an embodiment includes a toilet body and a water drainage socket. The toilet body has a water drainage outlet on a back surface thereof. The water drainage socket connects the water drainage outlet and an inlet of a water drainage pipe that is provided on a wall surface. The back surface of the toilet body is provided with an opening and a guide part. The opening is provided to insert therethrough a tubular member that extends from the wall surface in a case where the toilet body is mounted on the wall surface. The guide part guides the tubular member that is provided in a state where it is inserted through the opening so as to move to an outer side of the water drainage socket in a case where the toilet body is mounted on the wall surface.

Abstract: A flush toilet according to an embodiment includes a main water guide channel, a bending water guide channel, a rim water guide channel, and a retention part. The bending water guide channel bends a flow direction of washing water supplied from the main water guide channel. The rim water guide channel causes the washing water to flow toward and to be spouted from a water spout part. The retention part is formed in at least the bending water guide channel. An upper part of the retention part is formed into an opened concave shape and the retention part retains a part of the washing water. Furthermore, the retention part is formed in such a manner that an upper end thereof on a downstream side is horizontal to a bottom surface of the water spout part or higher than the bottom surface of the water spout part.

Abstract: A wash-out type toilet according to an embodiment includes a bowl that receives waste and a drainage water trap. The drainage water trap includes an inlet that is connected to a lower part of the bowl, a rise pipeline that is connected to the inlet and extends upward toward its own top part, a fall pipeline that extends downward toward an inlet of a drainage water pipe that is arranged on a floor surface, and an intermediate pipeline with an upstream-side portion that is connected to the rise pipeline and a downstream-side portion that is connected to the fall pipeline. Furthermore, the intermediate pipeline includes a retention surface that is formed to slope downward from an upstream side to a downstream side and temporarily retains waste at a time of toilet washing.

Abstract: The present invention is a flush toilet (1) including: a bowl portion (8) having a bowl-shaped waste receiving surface (16), a rim portion (18), and a well portion (20) formed at the bottom of the waste receiving surface; a discharge trap pipe (12) connected to the bottom portion of the well portion; a flush water guide portion (40b) disposed on the waste receiving surface at the rear of the well portion so that flush water is directed toward the side wall surface inside the well portion; and a liquid membrane spouting portion (24) disposed on the rim portion, wherein this liquid membrane spouting portion induces a vertical circulating flow in the well portion, produced when discharged flush water assumes a liquid membrane form and collides with a flush water guide portion, and the colliding flush water drops along the side wall surface of the well portion.