A thermal protector and a pressure detecting device of its moving spring

By using a multi-layer composite material of copper alloy and stainless steel to make the moving spring, and combining it with an automated pressure detection device, the problems of easy deformation of the moving spring and low efficiency of manual detection are solved, realizing efficient and accurate pressure detection and extending the service life of the thermal protector.

CN224458019UActive Publication Date: 2026-07-03HANGZHOU STAR SHUAIER ELECTRIC APPLIANCE
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
HANGZHOU STAR SHUAIER ELECTRIC APPLIANCE
Filing Date
2025-06-20
Publication Date
2026-07-03

AI Technical Summary

Technical Problem

The material of the moving spring in existing thermal protectors is prone to deformation, which leads to increased contact resistance, shortened service life, and low efficiency and accuracy of manual inspection.

Method used

The moving spring is made of a multi-layer composite material of copper alloy and stainless steel, and is automatically tested by a pressure detection device, including a placement, pressing and testing mechanism, combined with a programmable controller and a force measurement and control transmitter for accurate pressure detection.

Benefits of technology

It improves the yield strength and welding strength of the moving spring, extends its service life, reduces the error and cost of manual inspection, and improves production efficiency and inspection accuracy.

✦ Generated by Eureka AI based on patent content.

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Abstract

This utility model relates to a thermal protector and its moving spring pressure detection device, belonging to the field of thermal protectors. The utility model includes a pin, a cover plate, a moving spring, a bimetallic strip, a stationary pin one, a stationary pin two, a heating element, a stationary pin three, and a base. The two ends of the heating element are welded to stationary pin one and stationary pin two, respectively. One end of the moving spring is electrically connected to stationary pin one, and the other end of the moving spring cooperates with one end of stationary pin three. The other end of stationary pin three is electrically connected to the pin. When the other end of the moving spring contacts the end of stationary pin three, stationary pin two, the heating element, stationary pin one, the moving spring, stationary pin three, and the pin are sequentially connected to form an electrical circuit. Its structural features are: a gasket is welded to one end of the moving spring, a moving contact is welded to the other end of the moving spring, a protrusion is provided at the center of the moving spring, a stationary contact is welded to one end of stationary pin three, and the gasket is electrically connected to stationary pin one.
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