Flushing device for disposing of human waste with improved drainage properties

A flushing device for disposing of human waste, comprising:

• a bowl;
• a trap section, disposed in a draining path extending from said bowl, having a rear end that pivots between upper and lower positions;
• a case main body that communicates with an external drain pipe and houses said trap section;
• a water supply mechanism that supplies water to said bowl;
• a driving mechanism that moves said trap section between said upper and lower positions, said driving mechanism comprising:
• first and second bearing grooves on said case main body;
• first and second arms, each having a projecting shaft at a first end pivotally supported in said first and second bearing grooves, respectively, and semicircular portions extending from a second end that join to encircle said rear end of said trap;
• said projecting shaft of said first arm having a hole with a non-circular cross section;
• a pivot element having a plate and a protrusion that mates with said hole;
• said plate having a central hole and a plurality of peripheral holes;
• an engaging element that engages said plate at said central hole and at least some of said plurality of peripheral holes;
• and
• a motor that rotatably drives said engaging element, which rotatably drives said plate, which rotatable drives said first and second arms, to move said rear end of said trap between said upper and lower positions.

A flushing device for disposing of human waste, comprising:

• a bowl having a bowl drain outlet;
• a trap section, disposed in a draining path extending from said bowl, having a rear end that pivots between upper and lower positions;
• a case main body that communicates with an external drain pipe and houses said trap section;
• a water supply mechanism that supplies water to said bowl;
• and
• a driving mechanism that moves said trap section between said upper and lower positions;
• and
• said trap section comprising:
• a plurality of alternative protrusions and recesses to define a bellows shape;
• an upstream most one of said protrusions being axially longer than others of said plurality of protrusions to define a connecting section that connects with said bowl drain outlet;
• and
• an upstream most one of said recesses having an inner diameter that is substantially identical to an inner diameter of said bowl drain outlet to define a substantially flush connection therebetween.