Sensitive noise-free type overheating protector

Abstract

The invention provides a sensitive noise-free type overheating protector, and relates to the field of manufacturing technology of overheating and overcurrent protectors and temperature control devices thereof. The sensitive noise-free type overheating protector comprises a shell, two ends of the shell are respectively provided with an opening, a fixed seat is installed in an inner cavity of the shell, a first contact piece and a second contact piece are installed inside the fixed seat in a penetrating mode, and spaces between the openings at the two ends of the shell, and the first contact piece and the second contact piece are respectively sealed through epoxy resin; a boss is installed on a middle connection body of the fixed seat, a step is installed on the boss, and the inner end of the first contact piece is installed on the step; a bimetallic strip is welded on the upper surface of the inner end of the first contact piece, and a movable contact is installed on the other end of the bimetallic strip; a top connection body of the inner cavity of the shell, above the bimetallic strip, is provided with a calibration boss; a stationary contact is installed below the movable contact; and the inner end of the second contact piece is in riveted connection with an outer sleeve through the stationary contact, and an insulating gasket is installed between the outer shell and the lower surface of the inner end of the second contact piece. The sensitive noise-free type overheating protector is reasonable in structure, free of noise and high in safety.

Description

technical field [0001] The invention relates to the technical field of manufacturing an overheat and overcurrent protector and a temperature control device thereof. Background technique [0002] At present, the internal bimetal elements of the protectors on the market all adopt a sudden jump structure, that is, the bimetal must go through a temperature forming process and be shaped into a dish or spherical shape. Noise will be generated during the jumping and flipping process. If the internal bimetal The thickness of the metal sheet is thick, and the noise generated by it cannot be ignored; moreover, most of the protectors on the market are drawn out at one end of the shell, which is prone to short-circuit at the welding point due to poor welding of the wires, split ends of the wire cores, and interconnection with each other during the manufacturing process. Serious quality problems caused the product to completely lose its protective function. Contents of the invention ...

AI Technical Summary

Problems solved by technology

[0002] At present, the internal bimetal elements of the protectors on the market all adopt a sudden jump structure, that is, the bimetal must go through a temperature forming process and be shaped into a dish or spherical shape. Noise will be generated during the jumping and flipping process. If the internal bimetal The thickness of the metal sheet is thick, and the noise generated by it cannot be ignored; moreover, most of the protectors on the market are drawn out at one end of the shell, which is prone to short-circuit at the welding point due to poor welding of the wires, split ends of the wire cores, and interconnection with each other during the manufacturing process. Serious quality problems caused the product to completely lose its protective function

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