ULTRASONIC SENSOR

摘要

An ultrasonic sensor which has high waterproof performance easily achieved using a simple structure and can be manufactured in a reduced time.  An ultrasonic sensor (1) is provided with a transducer (3), an electronic circuit board (4) having mounted thereon an electronic circuit for processing an ultrasonic signal transmitted and received through the transducer, and a housing (2) including a board housing section (5) for housing the electronic circuit board.  The board housing section (5) includes a lid member (9) fusion-connected to an opening (8) in the board housing section to liquid-tightly seal the board housing section.