Abstract: Disclosed herein is a passively discharging and water-saving toilet bowl having an operation mechanism in which all parts are accurately operated as well as a water supply controlling mechanism by which the water level in a water reservoir can be controlled arbitrarily. The toilet bowl, having an operation mechanism conducted with an operation unit comprising: a first operation unit, operated with a manipulation lever, communicating both with a stool-discharging piston for opening or closing a stool-discharging pipe and with a flap valve for opening or closing a water reservoir; and a second operation unit, operating in response to the position of a float for controlling the water level of the water reservoir in such a manner that the second operation unit is connected to and separated from the first operation unit when the float is situated at an upper position and a lower position, respectively.

Abstract: Disclosed herein is a passively discharging and water-saving toilet bowl having an operation mechanism in which all parts are accurately operated as well as a water supply controlling mechanism by which the water level in a water reservoir can be controlled arbitrarily. The toilet bowl, having an operation mechanism conducted with an operation unit comprising: a first operation unit, operated with a manipulation lever, communicating both with a stool-discharging piston for opening or closing a stool-discharging pipe and with a flap valve for opening or closing a water reservoir; and a second operation unit, operating in response to the position of a float for controlling the water level of the water reservoir in such a manner that the second operation unit is connected to and separated from the first operation unit when the float is situated at an upper position and a lower position, respectively.