Protecting structure of temperature controller

Abstract

The invention discloses a protecting structure of a temperature controller, which has a reasonable structure and can effectively prevent an electrothermal kettle from being continuously electrified and dry burned. The protecting structure comprises a temperature controller main body, a steam switch, a dry burning switch and a switch control mechanism, wherein the switch control mechanism comprises a lever, a sudden jumping spring and a movable and a static contact pieces; a set of linkage mechanism is arranged in the temperature controller main body; the linkage mechanism comprises two lever pieces which are mutually associated and are provided with fixed rotating shafts; one lever piece is a pressing lever; the protrusion end of the pressing lever is arranged above the movable contact piece; the other lever piece is a driving lever; the protrusion end of the driving lever is arranged above the outer end of the lever; moreover, an interface used for installing a button is designed on the protrusion end of the driving lever; and the driving lever and the pressing lever are connected through a gear. According to the invention, even if the button cannot automatically bounce up after being pressed down due to the extrusion of foreign matter or other reasons, the electrothermal kettle cannot be electrified so that the phenomenon of continuous repeated dry burning is avoided, the safety performance of a product is enhanced and the service life of the product is increased.

Description

technical field [0001] The invention relates to a temperature controller, in particular to a protection structure of the temperature controller. Background technique [0002] At present, the common thermostats for electric kettles on the market have different shapes, but they are similar in structure and have many common features. For example, they all have 360° rotating electrical connection function, steam switch, dry switch and other functions ( For a schematic diagram, see figure 1 ). Structurally, the connection and disconnection of the circuit, that is, the closing and separation of the movable contact and the static contact, are all realized by the action of a lever mechanism with a jump function. This lever mechanism with the jump function is mainly composed of a thermostat main body 1', a lever 2' and a jump spring 3'. The inward end of the lever 2' is above the moving contact piece, and the outward end is designed with an interface for installing the button 4' ...

AI Technical Summary

Problems solved by technology

Since the button 4' is directly installed on the outer end of the lever, there will be such an abnormal phenomenon during use: if the button 4' of the thermostat is fixed due to foreign objects or other external forces, and cannot return to the normal state ( For a schematic diagram, see Figure 4 ), the steam switch will lose its function; and the dry switch will repeatedly cut off and connect the circuit after the water in the electric kettle is boiled dry, that is to say, the electric kettle will continue to be dry-boiled, which is a common practice in the industry. dry burn cycle

This will cause serious harm to the product, greatly reduce the service life of the product, and may cause a serious fire

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