Pull rod structure of temperature limiter

Abstract

The invention relates to the technical field of temperature controller structures, in particular to a pull rod structure of a temperature limiter. The pull rod structure comprises a fixing frame and a connecting rod, wherein hook parts are arranged at two ends of the fixing frame, a fixing part is arranged at the upper end of the connecting rod, a limiting structure is arranged at the fixing part, the upper end of the fixing part is fixedly connected with the bottom surface of the fixing frame, and a connecting plate is arranged at the lower end of the connecting rod. The pull rod structure is an integrated structure prepared from a polymer material. The pull rod structure is reasonable; assembly of an action film and a hard magnet is facilitated by the aid of the integrated fixing frame and pull rod, the assembling efficiency is improved, the problem of swinging of the pull rod structure can be effectively solved through matching of the cylindrical connecting rod and a connecting hole in a hard support base, the fixing frame fixes the periphery of the hard magnet and links with the hard magnet integrally, an action mechanism is simplified, inside friction damage is avoided, and the action sensitivity and stability of the temperature limiter can be effectively improved.

Description

technical field [0001] The invention relates to the technical field of temperature controller structures, in particular to a temperature limiter pull rod structure. Background technique [0002] The temperature sensor is an electrical protection device with automatic action protection, permanent disconnection without power failure, and self-reset function after power failure. It has a wide range of applications and is flexible in use. It can protect the safety of electrical circuits and avoid damage caused by excessive operating temperatures. Temperature sensors are widely used in the field of small household appliances in electric heating containers such as smart rice cookers and pressure cookers. In addition to realizing automatic heating regulation through temperature detection, the safety requirements for overheating protection are also mandated by GB4706.1 safety standards for household appliances. [0003] The temperature limiter is a temperature control device commonl...

AI Technical Summary

Problems solved by technology

The temperature limiter generally includes a magnetic steel hard support, a pull rod, soft magnetic, hard magnetic and elastic reset parts. The pull rod is an assembly accessory between the components in the magnetic steel hard support. The existing pull rods are mostly made of magnetic materials. The top of the tie rod is punched or cut to form an embedded notch, and the hard magnet is embedded in the notch to fix it. This kind of tie rod structure has poor stability during assembly, and there is a large gap between the tie rod and the hard bracket. The tie rod can be left and right. The amplitude of the swing is very large, which leads to the need to control the balance of the hard bracket during assembly to avoid position errors, making assembly difficult and inconvenient

For example, a tie rod structure proposed in Chinese patent 201320278771.8, the solution is to fix the permanent magnet through two stamped protrusions. The deformation of the stamped protrusion is very small, and it is easy for the magnet to fall off and cause the connection. fail

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