| 摘要 |
An electrical energy regulator of the kind including an electrically energizable heater which, when energized, causes deflection of a bi-metal actuator which in turn influences operation of switch means. The switch means controls supply of electrical energy between input and load terminals which are respectively connected, when in use, to a power source and power using means. The switch means includes two heater contacts which must be closed to enable energization of the heater, and two control contacts which must be closed to enable connection of the input and load terminals. The switch means also includes a spring blade which is connected to the input terminal and carries one of the heater contacts and one of the control contacts. The blade is movable between two operative conditions in which the heater contacts are open and closed respectively, and the control contacts are closed and open respectively. A lever movable about an adjustable fulcrum responds to movement of the bi-metal to thereby cause a change in the spring blade operative condition. A rotatable cam is operative to adjust the fulcrum to vary the amount of bi-metal movement necessary to cause a change in the operative conditions of the switch means, and also regulates an auxiliary switch in the connection between the spring blade and the input terminal.
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