Fuse protection structure

Abstract

The invention relates to the technical field of temperature control sensors, in particular to a fuse protection structure. The fuse protection structure comprises a base and a fixed plate. An elastic reed is arranged on the fixed plate. A temperature piece is arranged at the free end of the elastic reed. A through hole is formed in the fixed plate. A fuse core penetrates through the through hole. A temperature sensing plate is arranged at the upper end of the fuse core and is movably connected with the fixed plate. A supporting spring is arranged between the lower end of the fuse core and the base. A shifting fork is arranged between the supporting spring and the fuse core. The fuse protection structure is reasonable in structure, the fuse core is driven by the temperature sensing plate to be pressed down on the fixed plate, a dry burning prevention device in the base is activated through the shifting fork, and the temperature sensing plate is released so that the supporting spring can drive the fuse core to rise to cut off connection and a fuse can be kept integrally linked with other parts. When the temperature in a sensor rises, the fuse core cracks so that the shifting fork can be ejected, the overall use safety of the sensor is ensured, the inner layout reasonability of the sensor is improved, and the maintenance and repair cost is reduced.

Description

technical field [0001] The invention relates to the technical field of temperature control sensors, in particular to a fusing protection structure. Background technique [0002] At present, the common anti-dry sensors in the market include installation cup, micro switch and switch support plate. The heating circuit on the base plate is connected with a heat-sensitive component in series, and the heating circuit is disconnected when the mounting cup is released. [0003] The trigger sensing mechanism of the sensor realizes linkage triggering through the up and down movement of the mounting cup. The assembly accuracy of each working part in the sensor is high, and the fuse protection mechanism of the independent configuration of the sensor makes the overall structural layout more complicated, difficult to assemble and poor in stability; The independently set fuse protection does not protect other working parts in the sensor, and its unreasonable structural setting leads to lo...

AI Technical Summary

Problems solved by technology

[0003] The trigger sensing mechanism of the sensor realizes linkage triggering through the up and down movement of the mounting cup. The assembly accuracy of each working part in the sensor is high, and the fuse protection mechanism of the independent configuration of the sensor makes the overall structural layout more complicated, difficult to assemble and poor in stability; The independently set fuse protection does not protect other working parts in the sensor, and the irrationality of its structural setting leads to low safety factor, difficult maintenance and high cost

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