Loudspeaker with closed membrane and relative assembly method

An assembly method and technology of sealing membrane, which is applied in the direction of fixing/tightening the diaphragm, sensors, loudspeakers, etc., can solve the problems of reducing the performance of the speaker, increasing the size of the air gap T, and the loss of magnetic current induction

Active Publication Date: 2019-06-28
ASK IND SPA
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0030] The increase of the distance T3, T4 is necessary for a loudspeaker with a closed membrane, increasing the size of the air gap T, the consequent loss of induction of the magnetic current and reducing the performance of the loudspeaker
[0031] In order for a speaker with a closed membrane to perform similarly to a speaker with an open membrane, larger magnets must be used, or additional magnets must be added, such as on the core of the upper plate, thereby increasing the cost of the speaker and volume

Method used

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  • Loudspeaker with closed membrane and relative assembly method
  • Loudspeaker with closed membrane and relative assembly method
  • Loudspeaker with closed membrane and relative assembly method

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Embodiment Construction

[0053] refer to Figure 13 , according to the invention, the mobile unit A comprises a first centering device 3 and a second centering device 3' fixed directly to the cylindrical support 20 of the voice coil 2. Such a mobile unit A is pre-assembled.

[0054] For illustrative purposes, each centering device 3, 3' comprises an inner ring 30, an outer ring 31 and a plurality of elastic elements 32 connecting the outer ring with the inner ring.

[0055] refer to Figure 14 , the inner ring 30 of each centering device 3, 3' is glued to the cylindrical support 20, so that the centering devices 3, 3' can be arranged according to two spaced apart horizontal planes.

[0056] The diameter of the outer ring of the first centering device 3 is larger than the diameter of the outer ring of the second centering device 3'.

[0057] Stationary unit B is pre-assembled. The fixing unit (B) is basically similar to a conventional fixing unit. The only difference is that the frame 5 comprises ...

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Abstract

An assembly method of a loudspeaker with a closed membrane comprises pre-assembling a mobile unit (A) comprising two centering devices fixed to a voice coil; pre-assembling a fixed unit (B) that comprises a basket (5) fixed to a magnetic unit (4), assembling the mobile unit in the fixed unit, by means of a centering device (6); extracting the centering device (6) and fixing a closed membrane (100)to the voice coil and to the basket (5).

Description

technical field [0001] This patent application for industrial invention relates to a loudspeaker with a closed membrane and the associated method of assembly. Background technique [0002] As is known, loudspeakers comprise a voice coil consisting of a cylindrical support with at least one winding. The voice coil is connected to the membrane. An annular edge connects the membrane peripherally to the frame. The voice coil moves in a magnetic field, causing the membrane to vibrate to produce sound. [0003] Generally, the membrane is open and frusto-conical in shape with an axial hole into which the voice coil is inserted. However, it is also possible to provide loudspeakers with a closed membrane (without axial holes), where the membrane covers the cylindrical support of the voice coil. In this case, the membrane can have a different shape than a frustoconical shape, for example, a flat membrane or a domed membrane. [0004] In the following description, the terms "upper...

Claims

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Application Information

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IPC IPC(8): H04R9/06H04R9/02H04R31/00
CPCH04R9/043H04R31/006H04R9/06H04R7/18H04R9/025H04R9/041H04R2400/11
Inventor C·潘尼D·奇纳尼M·考隆纳
Owner ASK IND SPA
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