Suspensible loudspeaker

Abstract

The invention discloses a suspensible loudspeaker, including a frame, a cone, a drive magnet with a storage tank, a voice coil and a voice coil guide cylinder. The bottom of the storage tank protrudes outwardly to form a magnetic conductive core column. An arc hook is arranged above the drive magnet; the hook is connected with an upper end surface of the drive magnet through a straight rod; the hook is internally provided with an anti-slip mechanism; the magnetic conductive core column is internally provided with an air inlet channel and an air outlet channel; the air inlet channel is internally provided with an air inlet one-way valve for only introducing external air into the voice coil guide cylinder; the air outlet channel is internally provided with an air outlet one-way valve for only exhausting air in the voice coil guide cylinder; and the outer side wall of the magnetic conductive core column is surrounded by a coil, and the coil and the voice coil are electrified to generate magnetic field forces in opposite directions. According to the invention, the heat radiation effect in the voice coil vibration sounding process is good, so that the continuous working time of the loudspeaker is increased, and the service life of the loudspeaker is prolonged.

Description

technical field [0001] The invention relates to the technical field of electroacoustic transducers, in particular to a suspendable horn. Background technique [0002] The horn is also called the loudspeaker. The working principle of the more common electric loudspeaker is based on Faraday's law. When the current-carrying conductor passes through the magnetic field, it will receive an electromotive force, and its direction conforms to Fleming's left-hand rule. Force and current, magnetic field The directions are perpendicular to each other, and the magnitude of the force is proportional to the current, the length of the wire, and the magnetic flux density. When the voice coil is input with alternating audio current, the voice coil is subjected to an alternating driving force to produce alternating motion, which drives the paper cone to vibrate, and repeatedly pushes the air to produce sound. [0003] It can be seen that during the working process of the speaker, the voice co...

AI Technical Summary

Problems solved by technology

[0003] It can be seen that during the working process of the speaker, the voice coil is vibrating alternately, so the friction between the voice coil and the air, and the friction between the voice coil and the driving magnet will generate a certain amount of heat. If it cannot be discharged in time, the drive magnet will have a thermal demagnetization effect, which will eventually lead to a decrease in the magnetic performance of the drive magnet or complete demagnetization

Especially in high-power speakers, the amplitude and vibration frequency of the voice coil are relatively high, so the rate of heat generation is far greater than the rate of speaker heat dissipation, which limits the continuous working time of high-power speakers. However, the long-term continuous use of the above-mentioned existing high-power loudspeaker by the operator will cause the magnetic performance of the driving magnet to attenuate, thereby reducing the service life of the loudspeaker.

This is the problem that the high-power loudspeaker in the prior art is easily damaged after long-term continuous use

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