G - Physics
01
P
G01P 15/135 (2006.01) H01H 35/14 (2006.01)
Patent
CA 2114799
A shock sensor (300) comprising: a reed switch (310) which has a reed contact part which switches over from a first state to a second state under the influence of magnetism; a magnet (315) which is fixed in the main casing with a specified distance from the reed switch; a shield member which has an area as large as sufficient to prevent magnetism from the magnet from affecting the reed contact part when arranged at a regular position; and an resilient member (323) which keeps, in a normal state, the shield member at the regular position between the reed contact part and the magnet at which the reed contact part is kept in the first state and which holds the shield member so that, when a shock as applied to the shock sensor, the shield member can move to a position at which the shield member makes the reed contact part change over to the second state.
Hamazaki Isamu
Kobayashi Tatsuo
Makiki Kayoko
Matsueda Hisaharu
Nakamura Kiyotaka
Fetherstonhaugh & Co.
Oki Electric Industry Co. Ltd.
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