| 摘要 |
PROBLEM TO BE SOLVED: To provide a liquid level detection device capable of performing accurate liquid level detection by suppressing propagation of an ultrasonic wave emitted from an ultrasonic vibrator to the entity of a transmission pipe. SOLUTION: A bracket 7 is in contact with a guide pipe 9 which is the transmission pipe and a body 12 at each tip of a plurality of circular cone-shaped projections 74 provided on the outer surface, namely, at the top of each circular cone. Hereby, since contact areas of the bracket 7 with the guide pipe 9 and the body 12 are extremely small, vibration energy transmitted from the bracket 7 to the guide pipe 9 and the body 12 at the oscillation time from an ultrasonic sensor 3 is extremely small or zero. Consequently, since propagation of the ultrasonic wave emitted from the ultrasonic sensor 3 to the entities of the guide pipe 9 and the body 12 can be suppressed surely, this fuel liquid level detection device 1 capable of performing accurate liquid level detection by suppressing a noise received by the ultrasonic sensor 3 can be realized. COPYRIGHT: (C)2006,JPO&NCIPI |
