To increase the power of flushing water ejected from an ejection hole without complicating the shape of a water converyance passage in a siphon jet type toilet stool.
An unprocessed body formed into a toilet stool body is formed together with a recess 58K in the unprocessed body formation process S101. A jet water stream entrance basin 61aK linearly extending from a washing water conveyance passage 41 and a jet water canal basin 63aK bent from the jet water stream entrance basin 61aK and extended to a jet water ejecting hole 64K are formed by the recess 58. A first overhanging plate 80K and a second overhanging plate 84K integrally formed with a guide body 82K in a platelike unprocessed body with a guide body formation process S102 are stuck to the recess 58K in a platelike unprocessed body sticking process S103. The guide body 82K is disposed in the prior jet water stream entrance basin 61aK which is not yet bent. The side face 82Kd of the guide body 82K is extended toward the direction in which the jet water canal basin 63aK is circulated while keeping a sufficient distance for flowing of washing water between the jet water stream entrance basin 61aK or the jet water canal basin 63aK and the opposite wall.
MIYAGAMI KOICHI
SHINKAWA SHINKO
YONEDA TOSHIFUMI
Next Patent: WASHING WATER DISCHARGING METHOD OF FLUSH TOILET