| 摘要 |
PROBLEM TO BE SOLVED: To provide a piezoelectric sensor of excellent productivity capable of preventing a malfunction as a mean to prevent sandwiching. SOLUTION: This cable-like piezoelectric sensor 7 is provided with piezoelectric polarization parts 11, 12, 13 and nonpiezoelectric nonpolarization parts 14, 15, and also is provided with a restriction part 16 as an insensitive part to external vibration, in a portion in the vicinity of a boundary between the polarization part 13 and the nonpolarization part 14. Consequently, an operated portion when pressure is applied is clearly separated from a portion not operated, the malfunction of the sensor is thereby prevented in the portion desired not to be operated, and the piezoelectric cable sensor of excellent reliability can be attained. COPYRIGHT: (C)2007,JPO&INPIT
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