Title:
TEMPERATURE SENSOR AND TEMPERATURE SWITCH
Document Type and Number:
Japanese Patent JP09312122
Kind Code:
A
Abstract:
To provide a temperature sensor and a temperature switch with high precision in which force generated by a spring made of shape memory alloy at a temperature rise time is utilized without reduction.
Working force in a reverse direction from the force of a shape memory alloy spring 4 for the setting of a temperature is generated by an attraction generation means composed of a permanent magnet 5 and an iron plate 7 being magnetic material. Since the attraction lessens rapidly when the permanent magnet 5 and the iron plate 7 are parted, the force of the shape memory alloy spring 4 is not reduced, and is effectively utilized as the operation force of a switch and the like.
Inventors:
Noguchi, Nobukazu
Application Number:
JP1996000127574
Publication Date:
December 02, 1997
Filing Date:
May 23, 1996
Export Citation:
Assignee:
FUJI ELECTRIC CO LTD
International Classes:
G01K5/50; G01K11/00; H01H37/32; H01H37/66; (IPC1-7): H01H37/32; G01K5/50; G01K11/00