| 摘要 |
PROBLEM TO BE SOLVED: To reduce a cost by facilitating length adjustment, assembling work and fitting work by simplifying structure. SOLUTION: This sensor is provided with: a pair of hollow fitting bases 100 and 200 opposing each other at the peripheral part of a window; a lengthwise adjustable bar which comprises a large diameter pipe bar 310, a small diameter bar 320 inserted into and connected with the bar 310, a plunger 340 on the side of a small diameter and a plunger 350 on the side of a large diameter at both of the ends of bars and whose full length can be adjusted; and a pair of bar holders 400 and 500 provided with locking end parts 342 and 352 respectively and connected and fixed to the corresponding fitting base 100 and 200, wherein both ends of the bar 300 are pushed in its radial direction into the locking end parts 342 and 352 and locked with then respectively. A tension spring 611 whose one end is fixed is provided in the base 100, and a connection line 612 for connecting the spring with the locking end part 342 is provided. A lead switch 620 is arranged in the base 200, and a magnet 640 is arranged in the locking end part 352. COPYRIGHT: (C)2003,JPO
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