SAFETY DEVICE FOR OPENING AND CLOSING DEVICE OF CLOSING MEMBER

摘要

PURPOSE:To widen the directional width of a touch sensor detecting abnormalities and to improve the reliability of a safety device by making the touch sensor into a piezoelectric wire. CONSTITUTION:The touch sensor T employs the piezoelectric wire. An external electrode coils a core line 30. If pressure is applied to any position in the vicinity, a voltage corresponding to the pressure applied to a piezoelectric material 31 on its the external electrode 32 and the core line 30 occurs. In the touch sensor employing the piezoelectric wire, its directivity comes to 360 deg..