To enhance the reliability while reducing the labor required for assembling work.
A vibration detector 20 comprises a piezoelectric element 21, silver electrodes 22, 23, 25, and a load resistor 24. The piezoelectric element 21 is polarized in the reverse direction to the thickness direction on the opposite sides in radial direction. The load resistor 24 is printed using resistive paste between the silver electrodes 22, 23 of different polarity provided on one end face of the piezoelectric element 21 and the signal voltage of piezoelectric element 21 is generated across the load resistor 24. When a wire harness and a pair of caulked terminal plates are brought into contact with the silver electrodes 22, 23, respectively, signal voltage generated from the piezoelectric element 21 can be delivered to an ECU(electronic control unit). Since the terminal plate is required to be connected electrically with only one end face of the piezoelectric element 21, assembling work is facilitated. Furthermore, labor required for the assembling work can be reduced because the vibration detector 20 comprising arranged with the load resistor 24 can be handled as one component.
| JPS5874911 | [Title of the device] Pulse sensor |
| JP7450253 | sensor device |
| JPS59137857 | RAINDROP DETECTOR FOR AUTOMATIC WIPER |
KATO YASUNARI
YAMAGUCHI KIMIAKI
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