Flush toilet

Abstract

A flush toilet includes multiple discharge outlets formed in a rim part and provided to discharge flush water in one circumferential direction along an inner peripheral surface of the rim part, and, when a toilet bowl part is divided into four divided regions in plan view by a lateral center line, and a longitudinal center line, the multiple discharge outlets include a first discharge outlet provided in at least one of a first divided region and a second divided region, and a second discharge outlet provided in a third divided region, and a water discharge part is configured such that the amount of flush water discharged through the first discharge outlet is larger than the amount of flush water discharged through the second discharge outlet.

1 . A flush toilet, comprising a toilet body including a toilet bowl part, a rim part that forms a peripheral edge part of an upper opening of the toilet bowl part, and a water discharge part that discharges flush water into the toilet bowl part, wherein:
 the water discharge part includes a plurality of discharge ports formed in the rim part and provided to discharge flush water in one circumferential direction along an inner peripheral surface of the rim part;   when the toilet bowl part is divided into four divided regions in plan view by a lateral center line, which bisects a lateral dimension of an outer surface portion of the toilet body, and a longitudinal center line, which bisects a longitudinal dimension of an inner surface portion of the toilet bowl part, and when, with regard to the four divided regions, a rear-side divided region to which a front-side divided region is adjacent in the other circumferential direction is defined as a first divided region, and the three divided regions located subsequent to the first divided region in the one circumferential direction are serially defined as a second divided region, a third divided region, and a fourth divided region,   the plurality of discharge outlets include a first discharge outlet provided in at least one of the first divided region and the second divided region, and a second discharge outlet provided in the third divided region; and   the water discharge part is configured such that the amount of flush water discharged through the first discharge outlet is larger than the amount of flush water discharged through the second discharge outlet.   
     
     
         2 . The flush toilet of  claim 1 , wherein:
 the rim part includes a first rim conduit that receives, at a first shelf part, flush water discharged through the first discharge outlet and leads the flush water, and a second rim conduit that receives, at a second shelf part, flush water discharged through the second discharge outlet and leads the flush water;   a termination end part of the first rim conduit is located on a radially inner side of the toilet bowl part with respect to a downstream end part of a water passage for supplying flush water to the second discharge outlet; and   at least part of the termination end part of the first rim conduit is formed such as to be smaller in radius of curvature of the inner peripheral surface than a starting end part of the second rim conduit in plan view.   
     
     
         3 . The flush toilet of  claim 1 , wherein:
 the rim part includes a first rim conduit that receives, at a first shelf part, flush water discharged through the first discharge outlet and leads the flush water;   the first rim conduit includes
 a front end part that passes through a front end of the toilet bowl part, and 
   a termination end part located downstream of the front end part along the first rim conduit and located on the radially inner side of the toilet bowl part with respect to a downstream end part of a water passage for supplying flush water to the second discharge outlet; and   at least part of the termination end part of the first rim conduit is formed such as to be smaller in radius of curvature of the inner peripheral surface than the front end part in plan view.   
     
     
         4 . The flush toilet of  claim 1 , wherein:
 the plurality of discharge outlets include a third discharge outlet provided in the fourth divided region; and   the water discharge part is configured such that the amount of flush water discharged through the third discharge outlet is equal to or larger than the amount of flush water discharged through the second discharge outlet.   
     
     
         5 . The flush toilet of  claim 1 , wherein the water discharge part includes:
 a first water passage that is formed inside a first portion, on which the first discharge outlet is provided, of right and left portions of the rim part and that supplies flush water to the first discharge outlet; and   a second water passage that is formed inside a second portion, on which the second discharge outlet is provided, of the right and left portions of the rim part, that is provided with a turning part for leading flush water flowing in the other circumferential direction to turn toward the one circumferential direction, and that supplies flush water to the second discharge outlet.   
     
     
         6 . The flush toilet of  claim 2 , wherein:
 the rim part includes a first rim conduit that receives, at a first shelf part, flush water discharged through the first discharge outlet and leads the flush water;   the first rim conduit includes
 a front end part that passes through a front end of the toilet bowl part, and 
   a termination end part located downstream of the front end part along the first rim conduit and located on the radially inner side of the toilet bowl part with respect to a downstream end part of a water passage for supplying flush water to the second discharge outlet; and   at least part of the termination end part of the first rim conduit is formed such as to be smaller in radius of curvature of the inner peripheral surface than the front end part in plan view.   
     
     
         7 . The flush toilet of  claim 2 , wherein:
 the plurality of discharge outlets include a third discharge outlet provided in the fourth divided region; and   the water discharge part is configured such that the amount of flush water discharged through the third discharge outlet is equal to or larger than the amount of flush water discharged through the second discharge outlet.   
     
     
         8 . The flush toilet of  claim 3 , wherein:
 the plurality of discharge outlets include a third discharge outlet provided in the fourth divided region; and   the water discharge part is configured such that the amount of flush water discharged through the third discharge outlet is equal to or larger than the amount of flush water discharged through the second discharge outlet.   
     
     
         9 . The flush toilet of  claim 2 , wherein the water discharge part includes:
 a first water passage that is formed inside a first portion, on which the first discharge outlet is provided, of right and left portions of the rim part and that supplies flush water to the first discharge outlet; and   a second water passage that is formed inside a second portion, on which the second discharge outlet is provided, of the right and left portions of the rim part, that is provided with a turning part for leading flush water flowing in the other circumferential direction to turn toward the one circumferential direction, and that supplies flush water to the second discharge outlet.   
     
     
         10 . The flush toilet of  claim 3 , wherein the water discharge part includes:
 a first water passage that is formed inside a first portion, on which the first discharge outlet is provided, of right and left portions of the rim part and that supplies flush water to the first discharge outlet; and   a second water passage that is formed inside a second portion, on which the second discharge outlet is provided, of the right and left portions of the rim part, that is provided with a turning part for leading flush water flowing in the other circumferential direction to turn toward the one circumferential direction, and that supplies flush water to the second discharge outlet.   
     
     
         11 . The flush toilet of  claim 4 , wherein the water discharge part includes:
 a first water passage that is formed inside a first portion, on which the first discharge outlet is provided, of right and left portions of the rim part and that supplies flush water to the first discharge outlet; and   a second water passage that is formed inside a second portion, on which the second discharge outlet is provided, of the right and left portions of the rim part, that is provided with a turning part for leading flush water flowing in the other circumferential direction to turn toward the one circumferential direction, and that supplies flush water to the second discharge outlet.