Ultrasonic sensor device and method for assembling the same

摘要

An ultrasonic sensor device (1) includes a housing (2), a transducer (3), a securing unit (4), a circuit board (5) and a sealing cap (6). The housing (2) includes an enclosing portion (21). The enclosing portion (21) has a first opening (213) and an opposite second opening (214). The transducer (3) is secured to the enclosing portion (21) at the second opening (214). The securing unit (4) secures the transducer (3) to the enclosing portion (21) of the housing (2), and includes at least one securing rib (412) that extends toward the first opening (213) of the enclosing portion (21). The circuit board (5) is disposed in the enclosing portion (21). The sealing cap (6) is disposed to cover the first opening (213) of the enclosing portion (21) and has an inner cap surface that abuts against the securing rib (412) of the securing unit (4).