Patent ID: 6647559
Filing Date: 2003-11-18
Classification: E03D

Abstract:
A flushing unit for a toilet comprising:a flushing tank (1); a switching member (2); a connecting pipe (3); a pressure chamber (4); a discharging pipe (5); a reverse flow preventing valve (15a) located on top of a water inlet (15) located in a lower part of the flushing tank (1); wherein the switching member (2) is located on top of a water outlet (11) of the flushing tank (1) and connected to the connecting pipe (3) and the pressure chamber (4) disposed outside of the flushing tank (1) for opening and shutting the water outlet (11), and wherein the switching member (2) includes a blocking plate (21) at a bottom part of the switching member, a water inflow aperture (21a) in a side of the blocking plate (21), and a connecting aperture (21â€²) in a side wall of the switching member and connected to the connecting pipe (3); a piston board (12) located above the switching member (2) in the flushing tank (1); a spring (13) having one end resiliently supporting the piston board and another end connected to a cap (14) of the flushing tank to resiliently bias the piston board toward the water outlet; an operating button (7) located at one end of the pressure chamber (4) and movable to contract a spring (8) and having a closing member (41) integrally formed at one end thereof in the pressure chamber (4); and wherein the pressure chamber (4) includes an inlet (4â€²) connected to the connecting pipe (3) and an outlet (4â€³) connected to the discharging pipe (5), the inlet and the outlet (4â€² and 4â€³) of the pressure chamber being connected and disconnected by the closing member (41) integrally formed with the operating button (7).