Co-magnetic electric-acoustic structure

Abstract

The invention discloses a co-magnetic electric-acoustic structure. The electric-acoustic structure comprises a base frame, an earphone vibration system, a loudspeaker vibration system and a magnetic path system, wherein the base frame is provided with a holding cavity, and the magnetic path is arranged in the holding cavity; the magnetic path system comprises a first magnet and a second magnet, an installation slot is formed in the middle part of the second magnet, and the first magnet extends into or is embedded into the installation slot; an interval is formed between the side wall of the first magnet and the side wall of the installation slot; the earphone vibration system is provided with an earphone voice coil; the loudspeaker vibration system is provided with a loudspeaker voice coil; and the loudspeaker voice coil and the earphone voice coil are respectively arranged around the first magnet and the second magnet. The loudspeaker vibration system and the earphone vibration system share one magnetic path system, so that the loudspeaker vibration system and the earphone vibration system are integrated, the thickness and the volume of the loudspeaker structure and the earphone structure are reduced, the mobile phone space can be saved, and the utilization factor of the mobile phone space is improved.

Description

technical field [0001] The invention relates to a co-magnetic electroacoustic structure. Background technique [0002] There are elastic membranes, coils and permanent magnets in the speaker. The elastic membrane has a similar function to the tympanic membrane in the human ear. When it makes a sound, the membrane will vibrate; the membrane is connected to the coil, and in addition to the vibration effect, it also has the function of pulling the coil back to its original position. When the membrane vibrates, it drives the coil to vibrate, and the relative position of the coil and the permanent magnet changes, which causes the magnetic field passing through the coil to change. The change of the magnetic field will generate an induced electromotive force in the coil, which will also generate a current. Certain sounds have certain vibrations, and certain vibrations produce certain forms of electrical current. So the speaker "encodes" the sound into the form of an electric curre...

AI Technical Summary

Problems solved by technology

[0004] At present, the development direction of mobile phones and tablets is to pursue ultra-thin, easy to carry, and large screen ratio. Traditional mobile phones need to be equipped with a speaker and earpiece. The thickness of the thinnest mobile phone speaker on the market is 2.5mm (the mainstream is 3.0mm), and the earpiece is the thinnest. The size of the product is 2.0mm. Although it can be placed in a staggered manner (that is, the earpiece is on the top and the speaker is on the bottom), the shape of the mobile phone will be elongated when the components are arranged.

Images