Abstract: This toilet device has a water supply portion configured to supply flush water to a toilet bowl, a vacuum breaker provided in the water supply portion; and a connection pipe connected to the vacuum breaker, wherein the connection pipe is configured to drain the water overflowing from the vacuum breaker when malfunction occurs in the vacuum breaker as a drainage channel, and the connection pipe is configured to prevent backflow of sewage in the toilet bowl as a suction channel at the time of applying negative pressure.

Abstract: A toilet bowl device includes a toilet bowl main body, a toilet bowl washing tank disposed on an upper surface of the toilet bowl main body, and a tank cover covering the toilet bowl washing tank. A tank volume of the toilet bowl washing tank is 3 L or more. A relationship of Db?Da/5 is satisfied when a horizontal distance from a foremost end of the tank cover to a rearmost end of the tank cover is Da and a horizontal distance from a foremost end of the tank cover to the rearmost end of the tank cover is Db.

Abstract: A drainage connector communicates between a drain outlet of a toilet drainage path connected to a toilet bowl and a connecting port of a drain conduit led into a room equipped with a toilet body. The drainage connector includes a casing formed with a flow inlet connected to the drain outlet and a flow outlet connected to the port, and piping disposed in the casing. The 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 port and a downstream piping connected to the upstream piping and having a downstream opening open to the casing in a lateral direction along an inner surface of the casing so that flush water flows out in the lateral direction. The downstream piping forms an upward flow path when the drain outlet communicates with the port.

Abstract: An air suction device for a toilet drain passage includes a suction tank partitioned by a diaphragm into an upper chamber and a lower chamber communicating with the passage, and an electromagnetic drive device moving the diaphragm upward. The drive device has a cylindrical case body installed away from the tank, a moving member housed in the case body so as to be vertically movable, and a moving device located on a lower end of the case body. The moving device has a casing and an actuator assembled in the casing to move the moving member. The case body has a first airtight chamber surrounded by the moving member and the moving device. The first airtight chamber has a cubic capacity changed by movement of the moving member and communicates with the first chamber. The first airtight chamber sucks air in the first chamber to move the diaphragm upward.

Abstract: Disclosed is a drainage connector which can realize a flushing toilet of excellent usability. The drainage connector (10) establishes communication between a drain outlet (6B) of a toilet drainage path (L) leading to the downstream side of a toilet bowl (2) formed in a toilet body (1) and a connecting port (31) of a drain conduit (30) led into the room to be equipped with the toilet body (1). The drainage connector (10) is equipped with a casing (11) having a flow inlet (12) connected to the drain outlet (6B) and a flow outlet (18) connected to the connecting port (31), and an internal piping (20) arranged in the casing (11). The internal piping (20) is constituted of an upstream piping (22) having an upstream opening (21) communicating with the flow inlet (12), for forming a downward flow path, and a downstream piping (23) connected to the upstream piping (22) and having a downstream opening (24) opened into the casing (11), for forming an upward flow path.

Abstract: An air suction device for a toilet drain passage, which can independently of the place of installation of a toilet body and condition of use, constantly generate a siphon effect to perform excellent toilet flushing. The air suction device (20) sucks air from a toilet drain passage (5) connected to the downstream side of a water sealing section (4) of a toilet body (1), and has a suction tank wherein a first diaphragm (31) is placed in a housing (30H) so as to be movable in the vertical direction in an installed position, the first diaphragm (31) partitions the housing (30H) into a first chamber (32) on the upper side and a second chamber (33) on the lower side, and the second chamber (33) communicates with the toilet drain passage (5).

Abstract: An air suction device for a toilet drainage channel, capable of good and silent toilet flushing. The air suction device (200) for the toilet drainage channel (5) has air suction means for sucking air from the toilet drainage channel (5) connected to the downstream side of a water sealing part (4) of a toilet body (1). The air suction means has an ejector (30) serving as a negative pressure generator and also has a suction tank (80) connected between the ejector (30) and the toilet drainage channel (5). The air suction device (200) further has a control device (C) for controlling both execution of a suction stroke in which the suction tank (80) exhausts air into the toilet drainage channel (5). The control device (C) executes the air suction stroke after the start of the supply of flush water to the bowl (2) of the toilet body (1) and then executes the air exhaust stroke before the completion of the supply of the flush water to the bowl (2).