A linear double-position electromagnetic switch

Abstract

The invention relates to the technical field of magnetic switches, and particularly relates to a single moving magnet double-station electromagnetic switch comprising a cylindrical hollow shell, wherein a coil bracket is arranged in the shell, a magnetic coil is twisted on the coil bracket, a through hole is formed in the center of the coil bracket, an action connecting rod is penetrated in the through hole, a movable magnet is fixedly arranged on a lower end of the action connecting rod, an adsorption point is arranged on a bottom plate of the shell, a blocking piece is arranged above an upper end cover of the shell, and the upper end of the action connecting rod is fixedly connected with the blocking piece; the single moving magnet double-station electromagnetic switch has a reasonable structure, the magnetic coil converts the electrification current direction to switch the magnetic pole so as to drive the blocking piece to open and close a loudspeaker leakage hole, the movable magnet separately cooperates with a fixed end piece and the adsorption point on a travel limit to realize automatic locating without keeping the magnetism of the magnetic coil for a long time; the magnetic force of the magnetic coil is enhanced by the coil bracket and is isolated by a magnetic shielding layer and a shielding plate filled in the shell, the overall structure is compact, the action is flexible, and the mobile phone call quality can be improved.

Description

technical field [0001] The invention relates to the technical field of magnetic switches, in particular to a linear double-position electromagnetic switch. Background technique [0002] At present, there are some mobile phones on the market with two speakers to produce surround sound effect. This type of mobile phone usually replaces the earpiece with the speaker on one side. Close to the ear to listen to. However, in order not to distort the voice, the effective frequency range of the general earpiece is the low frequency of 300-3400Hz, and the general speaker has serious distortion in this frequency range, so the speaker is used instead of the earpiece, and there is distortion when talking. For this reason, in some current technologies, leakage holes are opened on the sound cavity of the speaker to improve the problem of low-frequency distortion, but this leads to the decline of high-frequency sound effect. It can be seen that the prior art still needs to be improved and...

AI Technical Summary

Problems solved by technology

However, in order not to distort the voice, the effective frequency range of the general earpiece is 300-3400Hz low frequency, and the general speaker has serious distortion in this frequency range, so the speaker is used instead of the earpiece, and there is distortion during the call

For this reason, in some current technologies, leakage holes are opened on the sound chamber of the speaker to improve the problem of low-frequency distortion, but this leads to the decline of high-frequency sound effect.

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