| 摘要 |
This invention provides a temperature switch that has a movable plate that has a structure that results in a long contact life, exhibits good current-interruption performance, and returns to a conducting state easily. Said temperature switch has a housing (2), a fixed contact (4), a bimetallic element (15), and a movable plate (7). The housing (2) has a fixed flat section (3) on the inside top surface thereof, and the fixed contact (4) is connected to the inside end of a first connecting terminal (6) on an inside bottom surface opposite the aforementioned fixed flat section (3). The direction of curvature of the bimetallic element (15) switches when a given temperature is reached, and the bimetallic element (15) is attached to an elastic metal main strip (8) of the movable plate (7). One end of said main strip (8) is affixed to a support part (9) of the housing (2), and the inside end of a second connecting terminal (11) is connected to the movable plate (7).The surface (8b) of the movable plate (7) that faces the fixed contact (4) has a movable contact (12), and the movable plate (7) has a movable flat section (14) that is joined to the end of said surface (8b). With the movable contact (12) pressed up against the fixed contact (4) so as to form a conducting path between the first connecting terminal (6) and the second connecting terminal (11), when the abovementioned temperature is reached and the direction of curvature of the bimetallic element (15) switches so as to lift up the movable plate (7), the entire surface of the movable flat section (14) firmly contacts the fixed flat section (3) in a single movement with no bounce, making it such that an arc appears only once between the separated movable and fixed contacts (12 and 4) before being extinguished. |
