A flush toilet, comprising a washing water supply portion which has a water outlet and a water inlet configured to connect to an external water supply pipe, is disclosed. Water flowing in from the water inlet flows from a first water inlet pipe to a second water inlet pipe, and then flows from the second water inlet pipe to the water outlet, a flow sectional area of the first water inlet pipe is smaller than a flow sectional area of the water inlet, and a flow sectional area of the second water inlet pipe is larger than the flow sectional area of the first water inlet pipe.

A flush toilet includes a toilet main body made of ceramics and a rear storage configured to store at least a part of a control unit. The rear storage includes a supporting wall that divides a storage region into upper and lower regions and that joins left and right side walls of the skirt and the water discharge trap. The supporting wall includes a horizontal wall that extends in a horizontal direction from a joining portion between the supporting wall and the water discharge trap, and left and right lower walls that are provided outside the horizontal wall in a left-right direction and below the horizontal wall and that are joined to the left and right side walls of the skirt. The left and right lower walls on a rear side are separated in the left-right direction by the horizontal wall.

A flush toilet apparatus includes a toilet body that includes a rim water spout port, a tank that stores washing water, a rim side water supply channel that supplies washing water to the rim water spout port, a tank side water supply channel that supplies washing water to the tank, a flow channel switching part that adjusts an amount of washing water that is supplied to one or both of the rim side water supply channel and the tank side water supply channel, and an electrical power failure detection part that detects electrical power failure, wherein, in a case where electrical power failure is caused when washing water is supplied to the tank side water supply channel, the flow channel switching part decreases washing water that is supplied to the tank side water supply channel and increases washing water that is supplied to the rim side water supply channel.

A flush toilet according to the present invention includes a bowl including a well portion, and a discharge trap conduit, the well portion includes a bottom wall formed above and in front of an inlet of the discharge trap conduit, a side wall formed to surround the bottom wall, and a connecting portion that connects an outer edge of the bottom wall and a lower edge of the side wall, the bottom wall of the well portion includes an inclined portion, and guiding portions that are formed on left and right outer sides of the inclined portion and that guide flush water or waste from front toward the inlet of the discharge trap conduit, and the inclined portion, in a side cross-sectional view, is entirely formed into an upwardly convex shape and formed to be inclined downward from front toward the inlet of the discharge trap conduit.

A flush toilet according to the present invention includes a bowl including a well portion, and a discharge trap conduit, the well portion includes a bottom wall formed above and in front of an inlet of the discharge trap conduit, a side wall formed to surround the bottom wall, and a connecting portion that connects an outer edge of the bottom wall and a lower edge of the side wall, the bottom wall of the well portion includes an inclined portion, and guiding portions that are formed on left and right outer sides of the inclined portion and that guide flush water or waste from front toward the inlet of the discharge trap conduit, and the inclined portion, in a side cross-sectional view, is entirely formed into an upwardly convex shape and formed to be inclined downward from front toward the inlet of the discharge trap conduit.

A flush toilet includes a bowl including a waste receiving surface, a rim and a well portion; a water spouting part that spouts flush water toward the bowl; and a water discharge trap including an inlet connected to a lower part of the well portion, the water discharge trap discharging waste in the bowl, the well portion includes a bottom wall formed above and in front of the inlet of the water discharge trap, a side wall formed to surround a periphery of the bottom wall, and a joining portion that joins an outer edge of the bottom wall and a bottom edge of the side wall with a surface having a curvature, and the bottom wall of the well portion includes a concave portion formed to recess downward on left and right sides with respect to a center axis in a left-right direction in a front sectional view.

A flush toilet includes a bowl including a waste receiving surface, a rim and a well portion; a water spouting part that spouts flush water toward the bowl; and a water discharge trap including an inlet connected to a lower part of the well portion, the water discharge trap discharging waste in the bowl, the well portion includes a bottom wall formed above and in front of the inlet of the water discharge trap, a side wall formed to surround a periphery of the bottom wall, and a joining portion that joins an outer edge of the bottom wall and a bottom edge of the side wall with a surface having a curvature, and the bottom wall of the well portion includes a concave portion formed to recess downward on left and right sides with respect to a center axis in a left-right direction in a front sectional view.

A flush toilet includes a toilet main body made of ceramics, a control unit, a supply source that enables water supply or power supply to the control unit, and a flexible elongated member connecting the supply source and the control unit. The toilet main body includes a rear storage configured to store at least a part of the control unit. The rear storage includes an upper storage region, a lower region, and a lower communication region. The flexible elongated member extends from an upper connecting end portion toward a lower connecting end portion, to be inserted from the upper storage region into the lower communication region, and then extends from inside of the lower communication region to outside of the toilet main body, without extending through the lower region.

A flush toilet includes a toilet main body made of ceramics, a control unit, a supply source that enables water supply or power supply to the control unit, and a flexible elongated member connecting the supply source and the control unit. The toilet main body includes a rear storage configured to store at least a part of the control unit. The rear storage includes an upper storage region, a lower region, and a lower communication region. The flexible elongated member extends from an upper connecting end portion toward a lower connecting end portion, to be inserted from the upper storage region into the lower communication region, and then extends from inside of the lower communication region to outside of the toilet main body, without extending through the lower region.

There is provided a flush toilet that performs flushing by rim spouting, the flush toilet allowing the size of a flush water tank to be reduced while enabling discharge of a sufficient amount of flush water to a toilet main body. A flush toilet 1 includes a toilet main body 2 including a bowl 2a, a rim 2c and a rim spout port 2f for discharging supplied flush water to the rim 2c, a flush water tank device 4, a pump device 6, a water supply device 8, and a controller 10, where the controller 10 is capable of performing a flushing mode in which the total amount of discharge of flush water discharged to the rim spout port 2f by the pump device 6 is greater than a tank capacity of the flush water tank device 4, and the controller 10 controls driving of the pump device 6 and the water supply device 8 in the flushing mode such that at least a part of a water supply period when flush water is supplied by the water supply device overlaps a discharge period when flush water is discharged by the pump device 6.