Electromagnetic relay with high magnetic efficiency and less foreign substance pollution

Abstract

The invention discloses an electromagnetic relay with high magnetic efficiency and less foreign substance pollution, comprising a base, a magnetic circuit part, a contact part and a pushing card. The magnetic circuit part comprises a reel, an enamelled wire, a U-shaped iron core, an armature and a pressure spring, wherein the middle part of the U-shaped iron core is embedded in the reel; the enameled wire is wound outside the reel containing the U-shaped iron core; a clamping stage is arranged on one end of the armature; an elastic clamp tongue is arranged in the middle of the pressure spring; fins are arranged at the two sides of the pressure spring; the pressure spring is arranged on the base through the fins at two sides; the clamp tongue of the pressure spring is elastically propped against at the clamping stage of the armature to ensure that one end of the armature can be closely attached to the edge of the polar surface of the iron core. After the structure is adopted, on the one hand, the armature and the polar surface of the iron core can be completely attached to achieve the aim of improving the positioning accuracy and the magnetic efficiency of the armature, on the other hand, foreign substance pollution can be reduced, and the cleanness of the contact surface of the relay can be ensured to achieve the aim of improving the product reliability.

Description

technical field [0001] The invention relates to an electromagnetic relay, in particular to an electromagnetic relay with high magnetic efficiency and less foreign matter pollution. Background technique [0002] At present, with the improvement of people's living standards, the application of household appliances such as color TVs, air conditioners, refrigerators, washing machines, water heaters, soybean milk machines, etc. is becoming more and more common, and there is a tendency to gradually spread to small towns and rural areas; in North America, Western Europe, etc. In developed countries abroad, in addition to the above-mentioned general-purpose household appliances, high-end household appliances such as automatic dishwashers, electric heating carpets, and electronic massagers have basically entered ordinary households. [0003] As the basic control component of household appliances, the electromagnetic relay's market application field is also expanding with the continuo...

AI Technical Summary

Problems solved by technology

This design, on the one hand, due to the use of a non-elastic base to limit the movable armature, makes it impossible for the armature to completely fit the pole surface of the iron core, resulting in disadvantages such as poor positioning accuracy of the armature and low magnetic efficiency; on the other hand, Due to the direct contact between the movable armature and the base made of plastic material, it is easy for the armature to rub against the base to produce plastic chips, which causes the disadvantage of polluting the contacts, thus reducing the reliability of the product

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