| CPC A47J 37/0842 (2013.01) [H01F 7/064 (2013.01)] | 11 Claims |
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1. A toaster, comprising:
a neutral wire terminal and a live wire terminal;
a heating circuit comprising a first switch, a second switch, a power-off protection switch and a heating element, the first switch connected between the neutral wire terminal and the heating element, the second switch and the power-off protection switch connected in series between the live wire terminal and the heating element, the power-off protection switch comprising a third switch;
an electromagnet arranged on a base of the toaster;
a timing control circuit connected with the electromagnet;
a rectifier circuit with input ends thereof connected with the heating circuit and an output end thereof respectively connected with the electromagnet and the timing control circuit;
a lifting plate connected with an elastic element, the lifting plate comprising an attracting part, a first pressing part and a second pressing part;
wherein when the lifting plate overcomes an elastic force of the elastic element and moves from an ejected position toward the base to a working position, the first pressing part depresses the first switch to a closed state, the second pressing part depresses each of the second switch and the third switch to a closed state, the electromagnet is energized and attracts the attracting part to maintain the lifting plate in the working position, and the heating element starts to work;
when the electromagnet is disconnected from the timing control circuit, the attracting part is released, the lifting plate springs upward under the action of the elastic element, the third switch changes to an opened state, and the heating element stops working;
the input ends of the rectifier circuit comprises a first input end and a second input end, a first terminal and a second terminal are provided as voltage output ends of the heating circuit, and are respectively connected with the first input end and the second input end of the rectifier circuit, the second switch and the third switch are connected in series between the live wire terminal and the first terminal, the first switch is connected between the neutral wire terminal and the second terminal, only when the first switch, the second switch and the third switch are all in a closed state, can the heating circuit supply voltage to the rectifier circuit through the first terminal and the second terminal;
a circuit board is arranged on the base, and the first switch, the electromagnet, the second switch and the third switch are arranged in sequence on the circuit board, wherein the first switch is located at one lateral side of the electromagnet, while the second switch and the third switch are located at an opposite lateral side of the electromagnet relative to the first switch, a projection of the first pressing part on the base covers the first switch, a projection of the second pressing part on the base covers both the second switch and the third switch, and a projection area of the second pressing part on the base is greater than a projection area of the first pressing part on the base.
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