A toilet assembly with a self-cleaning rim system is provided. The toilet assembly includes a toilet tank for storing water used by the toilet assembly. The toilet assembly includes a flush valve disposed within the toilet tank that opens and closes to deliver the stored water in the toilet tank. The toilet assembly includes a toilet bowl comprising a rim having a hollow section and a top surface forming an area suitable for water flow. The toilet assembly includes a rinse channel including a rinse channel inlet for receiving water from the toilet tank, the rinse channel configured to deliver the water for cleaning the top surface of the rim with each activation of the flush valve.

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 includes a toilet main body and a control unit. The toilet main body includes a skirt, a rear storage configured to store at least a part of the control unit, and an opening to which a drain pipe is connected is formed penetrating, in a front-rear direction, a portion below a center in a left-right direction of a rear wall of the skirt. The rear storage forms a discharge socket storage on a front side of the opening in a region below a center of the rear storage in the left-right direction. And a side wall surface in the discharge socket storage protrudes more in a center direction of the opening than a side wall surface in the opening, to reduce an opening cross-sectional area of the discharge socket storage to be smaller than an opening cross-sectional area of the opening.

A flush toilet includes a toilet main body made of ceramics including a skirt and a rear storage configured to store at least a part of a control unit. The skirt includes a rear wall and a side wall provided in a back surface and a side surface of the toilet main body, respectively. The rear wall includes an opening provided between a peripheral edge of each opening and the side wall of the skirt. The opening penetrates in a front-rear direction to communicate between an inner region of the rear storage or an outer region below the inner region and an outer region behind the toilet main body. The skirt further includes a cross beam that joinably or coupleably supports the peripheral edge of the opening and the side wall of the skirt to each other so as to reinforce strength of the toilet main body.

A flush toilet is capable of suppressing water from splashing from a bowl at a time when water is discharged rearward inside the bowl from one rim spout port portion formed in a rim portion. A rim spout portion of the flush toilet forms a rim water passage where flush water that is supplied flows through, and forms, on a downstream end of the rim water passage, a rim spout port portion that discharges the flush water rearward. The rim spout port portion, which is one in number, is formed in the rim portion, and the rim spout port portion in the linear portion is formed to discharge water rearward in the bowl in a direction extending the linear portion.

A flush toilet is capable of suppressing water from splashing from a bowl at a time when water is discharged rearward inside the bowl from one rim spout port portion formed in a rim portion. A rim spout portion of the flush toilet forms a rim water passage where flush water that is supplied flows through, and forms, on a downstream end of the rim water passage, a rim spout port portion that discharges the flush water rearward. The rim spout port portion, which is one in number, is formed in the rim portion, and the rim spout port portion in the linear portion is formed to discharge water rearward in the bowl in a direction extending the linear portion.

A flush toilet in which a comparatively large storage region that stores a functional unit can be formed in a region in more rear side than a bowl of a toilet main body, while improving designability of the whole flush toilet is provided. A toilet main body of a flush toilet includes a skirt and a rear function storage portion, the skirt includes an opening, the opening being formed in a portion of an upper part of an outer wall of the skirt, the opening allowing the rear function storage portion inside the skirt to open toward outside the skirt, and a part of the functional unit stored in the rear function storage portion forms an outer surface to close the opening.

A flush toilet which is capable of suppressing reduction in the force of water and disturbance in the flow curved by a pressure loss caused by a flow curved separating from a surface on an inner side portion side of an intermediate part. A rim water passage of the flush toilet includes a curved portion that is curved inward from a downstream end of an outer side portion. The curved portion includes a top portion that is at a position farthest from the intermediate part in the top view, in a direction extending the intermediate part. The top portion is formed in more the outer side portion side than a virtual center line that extends along a center of the intermediate part.

A flush toilet which is capable of suppressing reduction in the force of water and disturbance in the flow curved by a pressure loss caused by a flow curved separating from a surface on an inner side portion side of an intermediate part. A rim water passage of the flush toilet includes a curved portion that is curved inward from a downstream end of an outer side portion. The curved portion includes a top portion that is at a position farthest from the intermediate part in the top view, in a direction extending the intermediate part. The top portion is formed in more the outer side portion side than a virtual center line that extends along a center of the intermediate part.

A flush toilet of the present invention includes: a bowl including a waste receiving surface, a rim and a shelf surface formed between the waste receiving surface and the rim, the shelf surface of the bowl including linear portions provided on a right side and a left side, a front arc portion connected to front ends of the linear portions, and a rear arc portion connected to rear ends of the linear portions; a rim spout portion spouting flush water from a rim spout port to the shelf surface to form a circulating flow; and the like. Flush water is spouted backward from the rim spout port along the linear portions of the shelf surface; and the shelf surface located on an upstream side of the rim spout port has a sloped surface ascending toward the rim spout port.