High-quality combined inductor

Abstract

The invention discloses a high-quality combined inductor. The high-quality combined inductor comprises a coil, a magnetic core central post and a shell, wherein the coil and the magnetic core central post are arranged in the shell, the magnetic core central post penetrates through the coil, concave-convex structures are arranged on end surfaces of two sides of the magnetic core central post, a convex part in each concave-convex structure is in contact with or is pasted with an inner wall of the shell by an adhesive, and a concave part in each concave-convex structure is pasted with the inner wall of the shell by the adhesive. With a mode of arranging the concave-convex structures on the end surfaces of the magnetic core central post, the adhesive can smoothly be permeated into a contact surface of the magnetic core central post and the shell, so that the magnetic core central post and the shell are enabled to be tightly fixed, and the binding strength of the magnetic core central post and the shell is improved; and meanwhile, by the high-quality combined inductor, the collision frequency of the magnetic core central post and the shell is also substantially reduced during the high-frequency usage process of a subsequent inductor, and the problem of noise is fundamentally solved.

Description

technical field [0001] The invention relates to an inductance structure, in particular to a combined inductance which has a stable connection structure and can effectively avoid noise during high-frequency use, and belongs to the field of inductance processing. Background technique [0002] Inductor is the most common component in electronic equipment, and it is also one of the important components in the circuit. It is widely used in various circuits and can achieve the functions of filtering, energy storage, matching and resonance. [0003] Due to the wide variety of inductors, their structures are also different. Taking the combined inductor as an example, most of the more common combined inductors are composed of three parts, namely the coil, the core column and the shell. In the assembly process of this kind of inductor, it is necessary to put the coil on the core column first, then put the core column into the shell, and then inject adhesive into the connection positi...

AI Technical Summary

Problems solved by technology

However, such a treatment method will lead to a new technical problem. After the assembly of this type of inductor is completed, in order to ensure the bonding effect of the colloid, a high-temperature treatment will be carried out. During this process, the adhesive will appear due to heat. a certain amount of swelling

At this time, once the amount of adhesive in the shell is too much, it is easy for the colloid to overflow the shell and affect the subsequent assembly. In severe cases, the shell will crack due to excessive expansion of the adhesive.

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