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Loudspeaker comprising a rigid membrane connected to at least two coils

A loudspeaker and coil technology, applied in the loudspeaker field, can solve problems such as distortion

Pending Publication Date: 2021-09-07
DEVIALET
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This produces distortion in the sound emitted by the diaphragm

Method used

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  • Loudspeaker comprising a rigid membrane connected to at least two coils
  • Loudspeaker comprising a rigid membrane connected to at least two coils
  • Loudspeaker comprising a rigid membrane connected to at least two coils

Examples

Experimental program
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Embodiment Construction

[0027] refer to figure 1 , describes a loudspeaker 10 according to the invention.

[0028] Loudspeaker 10 includes a magnetic circuit 12 and a movable assembly 14 that is movable about an equilibrium position ( figure 1 shown) translates along the axis D of the loudspeaker. In the example shown, speaker 10 includes a single excitation source 16 electrically connected to movable assembly 14 .

[0029] The magnetic circuit 12 axially delimits the rear side of the loudspeaker 10 with respect to the movable assembly 14 .

[0030] In the example shown, the magnetic circuit 12 defines a first air gap 18 and a second air gap 20 that receive a first coil 22 and a second coil 24 from the movable assembly 14 , respectively.

[0031] In a variant not shown, the magnetic circuit 12 defines more than two air gaps, for example three, and each of these air gaps receives a coil from the movable assembly 14 .

[0032] In the example shown, the magnetic circuit 12 has a general shape that i...

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PUM

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Abstract

A loudspeaker (10) comprising a magnetic circuit (12), and a mobile assembly (14) along an axis (D) comprising: a rigid membrane (42) defining an external diameter (D3), a first reel holder (44) and a second reel holder (46), at least a first coil (22) and a second coil (24) located in a first air gap (18) and a second air gap (20) of the magnetic circuit respectively. The first coil holder and the second coil holder form a first junction (54) and a second junction (56) with the membrane, concentric and defining a first diameter (D1) and a second diameter (D2) greater than the first. The second diameter is:less than 97% of the external diameter, or greater than or equal to 97% of the external diameter, the first diameter being greater than 40% of the external diameter.

Description

【Technical field】 [0001] The invention relates to a loudspeaker comprising a magnetic circuit and an assembly movable relative to the magnetic circuit along the axis of the loudspeaker, the movable assembly comprising a rigid diaphragm adapted to emit sound waves and a coil on the coil holder. The coil is located in the air gap defined by the magnetic circuit. When the coil is passed through by an exciting current, the coil vibrates axially in the air gap, and the resulting vibration is transmitted to the diaphragm via the coil holder. 【Background technique】 [0002] Such speakers are generally satisfactory, but sometimes the diaphragm vibrates unevenly. In practice, at least for some excitation frequencies contained in the audio signal, it happens that the diaphragm has at least one region which emits waves at a higher or lower sound level than another region of the diaphragm. This produces distortion in the sound emitted by the diaphragm. 【Content of invention】 [00...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04R9/06H04R9/02H04R9/04
CPCH04R9/06H04R9/02H04R9/025H04R9/04H04R9/046H04R2207/00H04R7/04H04R9/063H04R7/02H04R9/045
Inventor 盖尔·达沃路易斯·贾利特洛伊克·克尔默
Owner DEVIALET
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