Problem: Provided is a flush toilet capable of increasing the volume of a waste conveyance flow, thereby improving a waste conveyance capability. Solution: The flush toilet includes: a toilet main unit (2) comprising a discharge conduit (16) communicated with the discharge trap pipe. The discharge conduit includes a flow dividing section (26) provided on a downstream side of an upstream discharge conduit section, and a delaying flow passage (28) branched from the flow dividing section. An inward region of the skirt portion includes: a central region (D) and a lateral region (E). The delaying flow passage (28) forms a passage in the lateral region (E) and merges leading flush water having flowed into the delaying flow passage from the flow dividing section (26) with a flush water flow reaching the flow dividing section at a timing after the inflow of the flush water to the delaying flow passage.

Problem: Provided is a flush toilet capable of increasing the volume of a waste conveyance flow, thereby improving a waste conveyance capability. Solution: The flush toilet includes: a toilet main unit (2) comprising a discharge conduit (16) communicated with the discharge trap pipe. The discharge conduit includes a flow dividing section (26) provided on a downstream side of an upstream discharge conduit section, and a delaying flow passage (28) branched from the flow dividing section. An inward region of the skirt portion includes: a central region (D) and a lateral region (E). The delaying flow passage (28) forms a passage in the lateral region (E) and merges leading flush water having flowed into the delaying flow passage from the flow dividing section (26) with a flush water flow reaching the flow dividing section at a timing after the inflow of the flush water to the delaying flow passage.

A check valve includes a lower sealing element; an upper sealing element including a flexible part configured to seal the lower sealing element; and a supporting element including a plurality of hollow parts. The supporting element is configured to be mounted in the lower sealing element and mounted at a side where clean water flows into the lower sealing element.

For combination with a flush toilet water tank having a side wall, a pond water receptacle integrated with said tank side wall at the exterior of the tank, the receptacle opening upwardly, there being a water passage through the tank side wall, whereby pond water in the receptacle has a gravity determined top level at approximately the same level as water in the tank, and a removable cover extending over water in the receptacle, protecting against contaminated pond water gaining access to tank water.

For combination with a flush toilet water tank having a side wall, a pond water receptacle integrated with said tank side wall at the exterior of the tank, the receptacle opening upwardly, there being a water passage through the tank side wall, whereby pond water in the receptacle has a gravity determined top level at approximately the same level as water in the tank, and a removable cover extending over water in the receptacle, protecting against contaminated pond water gaining access to tank water.

Problem: Provided is a flush toilet capable of increasing the volume of a waste conveyance flow, thereby improving a waste conveyance capability.

Solution: The flush toilet includes: a toilet main unit (2) comprising a discharge conduit (16) communicated with the discharge trap pipe. The discharge conduit includes a flow dividing section (26) provided on a downstream side of an upstream discharge conduit section, and a delaying flow passage (28) branched from the flow dividing section. An inward region of the skirt portion includes: a central region (D) and a lateral region (E). The delaying flow passage (28) forms a passage in the lateral region (E) and merges leading flush water having flowed into the delaying flow passage from the flow dividing section (26) with a flush water flow reaching the flow dividing section at a timing after the inflow of the flush water to the delaying flow passage.

Problem: Provided is a flush toilet capable of increasing the volume of a waste conveyance flow, thereby improving a waste conveyance capability.

Solution: The flush toilet includes: a toilet main unit (2) comprising a discharge conduit (16) communicated with the discharge trap pipe. The discharge conduit includes a flow dividing section (26) provided on a downstream side of an upstream discharge conduit section, and a delaying flow passage (28) branched from the flow dividing section. An inward region of the skirt portion includes: a central region (D) and a lateral region (E). The delaying flow passage (28) forms a passage in the lateral region (E) and merges leading flush water having flowed into the delaying flow passage from the flow dividing section (26) with a flush water flow reaching the flow dividing section at a timing after the inflow of the flush water to the delaying flow passage.

A toilet tank structure is formed by a primary-secondary water tank set, a tap water inlet control valve, a secondary water tank inlet control valve and a flush control module, and the tap water inlet control valve, the secondary water tank inlet control valve and the flush control module are provided for controlling the flushing and water supply to minimize the waste of water resources effectively, so as to achieve the effects of saving water and improving functionality.

A toilet tank structure is formed by a primary-secondary water tank set, a tap water inlet control valve, a secondary water tank inlet control valve and a flush control module, and the tap water inlet control valve, the secondary water tank inlet control valve and the flush control module are provided for controlling the flushing and water supply to minimize the waste of water resources effectively, so as to achieve the effects of saving water and improving functionality.

A flush water volume regulator is provided, capable of constraining the occurrence of a buoyancy force acting on a water reservoir, whereby flush water in the water reservoir can be circulated with flush water in a flush water tank outside the water reservoir. The flush water volume regulator 38 of the invention has a water reservoir, being a water reservoir 40 disposed inside this flush water tank 16, capable of storing a predetermined amount of flush water, on which an opening 40a through which flush water within water reservoir 40 and flush water outside water reservoir 40 can pass, and an opening-closing valve 42 for opening 40a during the standby state before starting a flush and for blocking opening 40a or reducing the opening surface area of opening 40a when the water level inside flush water tank 16 is dropping after starting a flush.