| 摘要 |
PROBLEM TO BE SOLVED: To provide a heat reaction switch of small-size and narrow body, as a whole, which stably opening/closing a contact while minimizing disturbance on an object whose temperature is to be measured. SOLUTION: This thermosensitive switch is characterized in storing a thermal expansion unit 10 which comprises a bellows sealing thermal expansion liquid in its inside and having crease in its outside, a transmission unit 20 transmitting the expansion pressure of the thermal expansion unit 10, a switch unit which has such a structure that the both sides of a movable plate having a contact opened/closed by the expansion pressure from the transmission unit 20 is fixed by press-fitting in a fitting hole provided in the fixed side and which is formed with a projecting separator increasing a creeping distance between the fitting holes, and a retainer spring 3 in a thermosensitive cylinder 1 in order.
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