| 摘要 |
PROBLEM TO BE SOLVED: To provide a piezo-resonant knock sensor having a small number of parts with a structure easy to assemble. SOLUTION: In this piezo-resonant knock sensor, a vibration sensing member 10 is supported on the bottom of an accommodating recessed part 3 having an upper surface of a metal mounting case 1 opened at the center position, since a structure without a lid is formed by filling elastic resin 30 in the accommodating recessed part 3 to seal, the structure becomes simple, and since a terminal 20 is connected in the accommodating recessed part 3 and buried in the elastic resin 30 with a connecting part 21 of the terminal 20 projecting from the resin and an external electric circuit has only to be connected to the connecting part 21, a connection means also becomes simple.
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