| 摘要 |
PROBLEM TO BE SOLVED: To provide a new crime prevention device as a countermeasure for unauthorized intruders in home to cope with diversification of unauthorized intruders, such as in rough manners of breaking glass and an open inner key, or a sneak thief to enter from a veranda window, and to obtain the effect of driving away the intruders by sounding unexpected alarm bell with a barrier, using fishing gut as a sensing feature. SOLUTION: Rail yarn 3 braided to a railroad pattern, tie yarn 4, and siding yarn 5 are stretched in the shape of a barrier as sensing function. The sensing function is structured to be interlocked with a roller part 13 of a microswitch 12 in contact with a ridge-line section 10 of a tulip flower type pendulum lamina 9 and to carry out on-off and attached to a lower part of a glass window 1 so as to sound an alarm bell 25. COPYRIGHT: (C)2004,JPO
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