A shielding coil

Abstract

The invention provides a shielding spring ring. The shielding spring ring comprises an inner ring and an outer ring, wherein the inner ring comprises a first top surface, a first bottom surface and a first hollow cavity, wherein the first hollow cavity passes through the first top surface and the first bottom surface, one or more first spring teeth are arranged on the first top surface and on the outer side of the first hollow cavity, the outer ring comprises a second top surface, a second bottom surface and a second hollow cavity, the second hollow cavity passes through the second top surface and the second bottom surface, one or more second spring teeth are arranged on the second top surface and on the outer side of the second hollow cavity and can be matched with the corresponding first spring teeth, and a viscous material is arranged on the second bottom surface and can be used for fixing with a shielding cover; and the inner ring is embedded into the outer ring to be fixed, closed connection is formed after each first spring tooth is engaged with the corresponding second spring tooth. By implementing the embodiment of the invention, the shielding spring ring has the advantages of simplicity in structure, high weather resistance, high reliability, high resilience and the like, an unfavorable effect such as assembly tolerance existing between the shielding spring ring and the shielding cover can be made up, and a relatively high shielding effect is achieved.

Description

technical field [0001] The invention relates to the technical field of electromagnetic shielding, in particular to a shielding coil. Background technique [0002] Although the volume of communication equipment products is getting smaller and smaller, the problem of electromagnetic interference between multiple ports inside the communication equipment is becoming more and more serious. Due to external electromagnetic interference, the electromagnetic waves generated by the port itself cannot radiate to the outside, causing interference to other ports. [0003] At present, there are two ways to realize electromagnetic shielding for communication equipment ports: 1. Use conductive foam or rubber rings to be sleeved on the outer wall of the port, and bonded to the shielding cover set on the outer wall of the port; 2. Use a multi-directional The metal ring sheet with inner bent spring teeth is sleeved on the outer wall of the port, and bonded with the shielding cover arranged on...

AI Technical Summary

Problems solved by technology

[0004] But above-mentioned two kinds of methods all have deficiencies, and its deficiencies are: in the first method, the weather resistance, reliability and resilience of electric foam or rubber snare are all poor, and can not be reinstalled and used, Once used for too long, the shielding performance will be seriously reduced; in the second method, although the metal ring piece is made of metal elastic material to overcome the problems of poor weather resistance, reliability and resilience, but due to the gap between multiple spring teeth There is an excessive gap, which reduces the shielding effect, especially when the distance between the metal ring and the shielding cover is taken as a positive limit tolerance, the shielding effect drops significantly

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