| 摘要 |
PROBLEM TO BE SOLVED: To lower a production cost and facilitate assembly. SOLUTION: A temperature controller, which functions with a hydraulic expansion capsule, i.e., a dyastat 5 installed, has a lever mechanism 30 for transmitting pressure between the diastat 5 and a switch spring 21 of a snap switch 20. A buffer, i.e., a shock absorber, is installed in the lever mechanism 30 for protection of the switch spring 21 against overloading. When a pressure larger than the limit relating to the switching point of the switch spring 21 is applied to the shock absorber, the shock absorber stays elastically flexible. On the contrary, when a pressure smaller than the limit is applied to the shock absorber, the shock absorber is substantially becomes rigid. The shock absorber and the lever mechanism 30 constitute a standard unit, while the standard unit has a rocker 31. The rocker 31 has a shape like a bent part of a thin metal plate. The bent part comprises an L-shaped pivot lever part 40 and, thereby, a stopper limiting open clip spring 41 which can apply a pretension in the opening direction is integrally structured. |
