Moving iron headphones

Abstract

The invention discloses a moving iron earphone, comprising a shell and a vibration unit arranged in the shell, wherein the vibration unit comprises a driving piece, a connecting rod and a diaphragm plate, the driving piece comprises two driving arms and a connecting arm, the connecting arm connects the two driving arms to form a U-shaped structural member, the driving arms are straight members, the connecting arm is a bent member, a metal coil is wound on one of the driving arms, a magnet block is respectively arranged on the upper and lower sides of the driving arm wound with the metal coil,and the polarities of adjacent parts of the two magnet blocks are opposite; and the connecting arm is made of an amorphous metal material. Since the connecting arm is made of the amorphous metal material, and fatigue points on the driving piece are located on the connecting arms including the bent part, even if the driving arms are vibrated for tens of thousands of hours, the driving piece does not have a fatigue effect, and thus the service life of the moving iron earphone can be effectively prolonged.

Description

technical field [0001] The invention relates to the technical field of earphone structure, in particular to a long-life moving iron earphone. Background technique [0002] The moving iron earphone is an earphone that vibrates and produces sound through a connecting rod with a precise structure that is transmitted to the center point of a micro-shaped diaphragm. The moving iron earphone can be easily put into the ear canal because the unit is much smaller. This approach effectively reduces the area of ​​the ear part and can be placed in a deeper part of the ear canal. The geometric structure of the ear canal is much simpler than that of the auricle, and it belongs to a circle, so a soft silicone sleeve can already play a good sound insulation and sound leakage prevention effect compared with traditional earplugs. [0003] However, due to its special structure, the moving iron earphone has a short service life. The reason is that the mechanical transmission of the moving ir...

AI Technical Summary

Problems solved by technology

[0003] However, due to its special structure, the moving iron earphone has a short service life

The reason is that the mechanical transmission of the moving iron earphone is completed through the U-shaped iron piece, which vibrates at a frequency of more than 10,000 times per second, so that the upper diaphragm emits sound, so the force-bearing point on the iron piece will vibrate too much. Metal fatigue occurs in a short period of time and causes deformation or even fracture. Generally, failures will occur after more than 500 hours of burn-in. Through investigation and analysis, the fatigue point of the U-shaped iron sheet generally occurs at the bend. Therefore, if the U-shaped iron sheet is not resolved The life of the iron piece will make the moving iron earphone a tasteless

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