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Magnetic circuit system and moving-coil type electroacoustic transducer with same

A technology of electroacoustic transducer and magnetic circuit system, which is applied in the field of magnetic circuit system to solve the problem of heat dissipation, prolong the service life and enhance the acoustic performance.

Inactive Publication Date: 2012-10-24
楼氏国际采购中心(马来西亚)私人有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

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Method used

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  • Magnetic circuit system and moving-coil type electroacoustic transducer with same
  • Magnetic circuit system and moving-coil type electroacoustic transducer with same
  • Magnetic circuit system and moving-coil type electroacoustic transducer with same

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Embodiment Construction

[0032] figure 1 The main components of a prior art moving coil electroacoustic transducer 100 are schematically shown in a side sectional view; figure 2 The arrangement of the inner magnet 4 and the outer magnet 8 of the magnetic circuit system of a prior art moving coil electro-acoustic transducer is schematically shown in the form of a top sectional view; image 3 The arrangement of the inner magnet 4 and the outer magnet 8 of the magnetic circuit system of another prior art moving coil electro-acoustic transducer is schematically shown in the form of a top sectional view. figure 2 The inner magnet 4 in the magnetic circuit system shown is in the shape of a racetrack, and the outer magnet 8 is correspondingly designed in an elliptical ring shape. image 3 The inner magnet 4 in the magnetic circuit system shown is circular, and the outer magnet 8 is correspondingly designed as a ring. The inner and outer magnets may be rectangular, circular, oval, racetrack, or other suit...

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Abstract

The invention provides a magnetic circuit system for moving-coil type electroacoustic transducers. The magnetic circuit system comprises an inner magnet, an outer magnet, an upper concentrating flux plate and a lower concentrating flux plate, wherein the inner magnet and the outer magnet are concentrically arranged, the inner magnet is encircled by the outer magnet, a gap is limited between the inner magnet and the outer magnet, the inner magnet and the outer magnet are stacked and fixed on the lower concentrating flux plate which is an integrated component, the upper concentrating flux plate is separated and comprises an inner upper concentrating flux plate portion stacked and fixed on the inner magnet and an outer upper concentrating flux plate portion stacked and fixed on the outer magnet, and the inner upper concentrating flux plate portion and the outer upper concentrating flux plate portion are separated. The magnetic circuit system is characterized in that an air hole is arranged at the center of the inner magnet and penetrates through the upper concentrating flux plate and the lower concentrating flux plate, a magnetic fluid is arranged on one side of at least one of the inner upper concentrating flux plate portion and the outer upper concentrating flux plate portion, and the side of at least one of the inner upper concentrating flux plate portion and the outer upper concentrating flux plate portion faces towards the gap. The invention further provides a moving-coil type electroacoustic transducer with the magnetic circuit system. By means of the scheme, the irradiating of a voice coil can be effectively achieved.

Description

technical field [0001] The present invention generally relates to the field of electro-acoustic transducers, in particular to a moving-coil electro-acoustic transducer and a magnetic circuit system for the moving-coil electro-acoustic transducer. Background technique [0002] An electroacoustic transducer is a device that converts electrical signals and sound signals into each other, including devices that convert electrical signals into sound signals and devices that convert sound signals into electrical signals. [0003] A loudspeaker is an electroacoustic transducer that converts electrical signals into sound signals. It can convert audio power signals within a certain range into audible sounds with low distortion and sufficient sound pressure levels. For dynamic (also called "electric") speakers, the working principle is as follows: In the use of dynamic speakers, the voice coil is fed with an electrical signal, a current flows through the voice coil, and the voice coil ...

Claims

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Application Information

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IPC IPC(8): H04R9/02H04R9/06
Inventor 史铎鹏李情怀王冰邓鸿滨
Owner 楼氏国际采购中心(马来西亚)私人有限公司
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