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A magnet assembly for a loudspeaker

A technology of magnet components and speakers, applied in the direction of sensors, electrical components, etc., can solve the problems of increased weight and distortion of speakers

Active Publication Date: 2010-12-08
斯甘斯比克公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Therefore, this configuration also suffers from the problem of distortion due to magnetic flux roll off in one end (upper and lower) of the gap due to the accumulation of magnetic flux in these regions
Furthermore, the design results in a very large magnet system, adding considerable weight to the speaker, sometimes exceeding the outer diameter of the speaker, making this short voice coil design an impractical option

Method used

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  • A magnet assembly for a loudspeaker
  • A magnet assembly for a loudspeaker
  • A magnet assembly for a loudspeaker

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Embodiment Construction

[0037] Magnet assembly according to the invention

[0038] In a first aspect the invention relates to a magnet assembly 1 for a conversion unit of the type having a moving membrane and having a voice coil arranged in a magnet assembly comprising components i) to iii):

[0039] i) T-yoke 2;

[0040] ii) magnet system 4;

[0041] iii) top plate 6;

[0042] Therein, the T-yoke 2 comprises a body comprising a bar part 8 defining a cylindrical outer surface 10 symmetrical about the axis of rotation, said cylindrical surface having an outer diameter d 1 and cylindrical edge 11; wherein the orientation of the axis of rotation of the cylindrical surface 10 is vertical, and the cylindrical edge 11 points upwards, the T-yoke also includes:

[0043] backing plate 12, comprising a bottom surface 14; said bottom surface 14 extends outwardly and upwardly at its bottom edge 16 to define an outer backing plate surface 18 terminating at an outer edge 20, wherein said backing plate 12 furt...

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Abstract

The present invention relates to a magnet assembly (1) for a transducer unitofthe type having a moving membrane and having a voice coil arranged into said magnet assem- bly,said magnet assembly comprising the components i) a T-yoke (2); and ii) a magnet system (4); and iii) a top plate (6). The magnet assembly according to theinvention has a specific design which provides for improved characteristics as to strength of B field in the gap between the top plate and the T-yoke, as well as to homogeneity of the B field in the gap and degree of symmetry in the roll-off behaviour of the B field in either axi- ally direction of the gap.

Description

technical field [0001] The invention relates to a magnet assembly for a conversion unit of the type having a moving membrane and having a voice coil arranged in the magnet assembly. Furthermore, the invention relates to the use of such a magnet assembly for the manufacture of loudspeakers. Furthermore, the invention relates to a method of manufacturing a magnet assembly according to the invention. Finally, the invention relates to a loudspeaker comprising a magnet assembly according to the invention, and a loudspeaker enclosure comprising such a loudspeaker. Background technique [0002] In the art, a number of different solutions have been proposed for constituting the magnet system. When using a magnet system as a driver to generate sound by moving a membrane, a gap is usually provided between the two parts of the magnet system so that there will be a magnetic flux field passing through the gap. A voice coil is set in the gap, and the coil of the voice coil will generat...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04R9/02H04R9/06H04R31/00
CPCH04R9/06H04R31/006H04R2209/021H04R2209/024H04R2209/022H04R9/025Y10T29/49005
Inventor 索伦·斯蒂恩·尼尔森
Owner 斯甘斯比克公司
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