摘要 |
<P>PROBLEM TO BE SOLVED: To provide an ultrasonic sensor that is capable of ensuring waterproofness without increasing the number of components, suppressing an increase in weight and cost, and preventing occurrence of distortion in a circuit board. <P>SOLUTION: An ultrasonic sensor comprises: a wave transmitting and receiving block 1 for housing a wave transmitting and receiving element for transmitting and receiving an ultrasonic wave; a circuit board 3 on which an electronic circuit for processing an ultrasonic signal transmitted and received via the wave transmitting and receiving element is mounted; a housing 4 in which an opening 41A is included and the wave transmitting and receiving block 1 is mounted; conduction means for electrically connecting the wave transmitting and receiving element and the electronic circuit on the circuit board 3 via an insertion opening 42 provided in the housing 4; and a sealing plate 6 for sealing the insertion opening 42. The opening 41A of the housing 4 is closed by the circuit board 3. <P>COPYRIGHT: (C)2013,JPO&INPIT |