Magnetic-sensing button type steam switch of electric kettle

Abstract

The invention discloses a magnetic-sensing button type steam switch of an electric kettle, which comprises a body and a button; wherein, the body is provided with a cylinder, a cavity of which is internally provided with a hard support that is provided with a hard magnetic, a spring is sheathed outside the cylinder, the bottom of the body is fixed with soft magnetic and the hard magnetic matched with the soft magnetism, and the soft magnetic is also corresponding to a steam hole; the button is internally provided with a mandril and externally provided with a contact, the button is matched withthe outside surface of the cylinder in a sliding way, the lower end of the mandril is contacted with the upper surface of the hard magnetic, and the two ends at the bottom of the button are in interference tight fit with the two ends of the hard support and can fix the hard magnetism; the body is fixed with a first terminal, a second terminal is arranged above the first terminal, a ring is arranged between the first terminal and the second terminal, the first terminal, the ring and the second terminal are sequentially connected with each other by a screw rod, the second terminal is fixed withan elastic piece which is corresponding to the contact, the lower side of the elastic piece is provided with a moving contact, the upper side of the first terminal is provided with a fixed contact, and the moving contact is corresponding to the fixed contact. The invention has the advantages of high accuracy of temperature control and good action reliability.

Description

technical field [0001] The invention relates to a steam switch, in particular to a magnetic-sensitive button-type steam switch for an electric kettle. Background technique [0002] refer to figure 1 , is a structural schematic diagram of an electric kettle with a steam switch in the prior art. The steam switch of the existing household electric kettle is to use the temperature-sensitive bimetal 3 installed on the kettle 1 as the temperature-sensing medium. Depress the rocker switch 6 during work, the top of the rocker switch 6 is in contact with the temperature-sensitive bimetal 3, at this moment, the movable contact piece 8 and the static contact piece 7 are in the connected state and start heating. When the water in the kettle 1 reaches the boiling point, the temperature-sensitive bimetal 3 is heated by steam to reach the operating temperature point and deformed, pushing the boat-shaped switch 6 to rotate around the fulcrum, and under the action of the elastic sheet 5, t...

AI Technical Summary

Problems solved by technology

The steam switch of the above-mentioned household electric kettle has the following problems: the processing of the temperature-sensing bimetal 3 is difficult, the temperature control accuracy is poor, the corrosion resistance is poor, and it is easy to rust and cause failure. Most of the materials rely on imports; , the stability of the overall structure is not good, there is a slight vibration, prone to misoperation, or due to inaccurate temperature control, resulting in premature jumping or too long boiling time

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