Patent ID: 8677519

Claim:
A drainage connector which communicates between a drain outlet of a toilet drainage path connected to a downstream side of a toilet bowl formed in a toilet body and a connecting port of a drain conduit led into a room equipped with the toilet body, the drainage connector comprising: a casing provided with a flow inlet connected to the drain outlet and a flow outlet connected to the connecting port; and an internal piping disposed in the casing, wherein the internal piping has an upstream piping having an upstream opening communicating with the flow inlet and forming a downward flow path when the drain outlet communicates with the connecting port and a downstream piping connected to the upstream piping and having a downstream opening open to an interior of the casing and forming an upward flow path when the drain outlet communicates with the connecting port, and wherein the downstream opening, which is open to the interior of the casing, is configured, relative to the interior of the casing, such that flush flowing out of the downstream opening impacts the interior of the casing with a circumferential flow component so as to generate a swirling flow within the casing, wherein the downstream opening is configured relative to the interior of the casing such that flush flowing out of the downstream opening has both a downward flow component and the circumferential flow component such that a downward swirling flow is initiated upon impact, and wherein the interior of the casing has a surface that is inclined and extends radial inward such that the swirling flow is directed radially inward following impact.