A non-polarity selective positioning electromagnetic switch

Abstract

The invention relates to the technical field of electromagnetic switches, in particular to a non-polar selective locating electromagnetic switch comprising a shell and a blocking piece, wherein a coil and an iron core are arranged in the shell, the iron core is inserted in the coil in a front and back movable manner, a connecting rod is arranged on a front end of the iron core, the front end of the connecting rod penetrates through a front side wall of the shell and is fixedly connected with the blocking piece; a fixed magnet is fixedly arranged in the shell on the back side of the coil, a tension plate is arranged in the shell on the front side of the coil, a fixed end of the tension plate is connected with the shell, and a movable end of the tension plate is in cooperative connection with the connecting rod in a propping manner; the non-polar selective locating electromagnetic switch has a reasonable structure, the coil switches the electrification current direction to switch the magnetic pole of the iron core, the blocking piece on the connecting rod is driven in cooperation with the front and back actions of the fixed magnet so as to seal or open the leakage hole on a loudspeaker, the iron core realizes automatic locating on a front travel through a stop block, and the iron core absorbs the fixed magnet on a back travel to realize locating; and the overall structure is compact, the action is flexible, the power consumption is little, and the mobile phone call quality can be improved.

Description

technical field [0001] The invention relates to the technical field of electromagnetic switches, in particular to a non-polarity selective positioning 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. Therefore, the prior art still needs to be im...

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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