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 element housing part 40 for housing the wave transmitting and receiving element 1 and an opening 41A are included, the circuit board 3 is housed via the opening 41A, 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; and a sealing plate 6 for sealing the insertion opening 42. The housing 4 allows portions thereof to be transformed and the transformed portions (extension pieces 45) to close the opening 41A of the housing 4. <P>COPYRIGHT: (C)2013,JPO&INPIT |