| 摘要 |
PROBLEM TO BE SOLVED: To provide a toilet bowl system which makes a trap cylinder moved in the state of not undergoing a braking force, without being driven by a drive motor, while a leading end of the trap cylinder is shifted to a stop state after being lowered or elevated, and which prevents a short circuit from being established between a high voltage portion and ground. SOLUTION: This toilet bowl system makes the leading end of the trap tube lowered or elevated by the normal or reverse running of the drive motor M. A driving means of the trap tube is equipped with a direct-current drive motor M, and an electric current switching means which is composed of an H-bridge circuit. When the leading end of the trap cylinder is lowered, a Pdw (P-ch MOSFET) and an Ndw (N-ch MOSFET) are turned on, and a Pup (P-ch MOSFET) and an Nup (N-ch MOSFET) are turned off. When the leading end of the trap cylinder is elevated, the Pdw and the Ndw are turned off, and the Pup and the Nup are turned on. When the leading end of the trap cylinder is kept in a stop state, the Nup and the Ndw are turned on, and the Pup and Pdw are turned off. Midway through the operation of shifting the leading end of the trap cylinder to the stop state from a lowered or elevated state, a free-run step of turning off the Pup and the Pdw, of turning off either of the Nup and the Ndw, and of turning on the other one of them is provided. COPYRIGHT: (C)2010,JPO&INPIT |
