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Minitype moving-coil electroacoustic transducer

An electro-acoustic conversion, moving coil technology, applied in electrical components, transducer diaphragms, electromechanical sensors, etc., can solve the problem of short service life of lead wires, complicated assembly process of voice coil and diaphragm, and reduction of production costs, etc. problems, to simplify the production and assembly process, improve electrical connection performance, and achieve the effect of automated production

Active Publication Date: 2012-11-14
GOERTEK INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although this design, to a certain extent, solves the disadvantages of the above-mentioned miniature moving coil electroacoustic conversion device with the above-mentioned traditional structure, such as short service life, easy noise and distortion, etc., the assembly of the voice coil and diaphragm of this structural design The process is relatively complicated, the electrical connection process of the diaphragm and the voice coil is difficult to operate, and it is difficult to realize automatic production, which is not conducive to the improvement of production efficiency and the reduction of production costs

Method used

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  • Minitype moving-coil electroacoustic transducer
  • Minitype moving-coil electroacoustic transducer
  • Minitype moving-coil electroacoustic transducer

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0035] Miniature dynamic electroacoustic transducers, such as figure 1 , figure 2 , image 3 , Figure 4 and Figure 5 As shown, including auxiliary system, vibration system and magnetic circuit system. The auxiliary system includes a front cover 11 and a housing 12, and one side of the housing 12 extends outward to form a housing extension 121 suspended from the miniature dynamic electro-acoustic transducer device; the vibration system includes a diaphragm 21 and a voice coil 22, and the voice coil 22 is also Lead wires 23 are provided; the magnetic circuit system is a double magnetic circuit structure, including the first washer 311, the first magnet 321, the second washer 312, and the second magnet 322 assembled with the magnetic permeable plate 33 from top to bottom, wherein The first washer 311 and the first magnet 321 are arranged concentrically with the second washer 312 and the second magnet 322 respectively; the conductive sheet 6 is also combined in the casing ...

Embodiment 2

[0041] The main difference between this implementation process and the above-mentioned implementation process is that the position of the conductive coating 5 is different, and the conductive coating in this implementation process is arranged on the back of the diaphragm 21, such as Figure 8 , Figure 9 and Figure 10 As shown, the back of the diaphragm 21 is provided with a conductive coating 5 , and the external electrode 41 b of the flexible circuit board 4 is improved into a ring structure that facilitates electrical integration with the conductive coating 5 on the diaphragm 21 .

[0042] At the same time, this implementation process can also reduce the cost by further improving the first embodiment, reducing the coating area of ​​the conductive coating, and can also adjust the flexible circuit board according to the configuration of the conductive coating and the different structures of the hollow part of the diaphragm. The further improvement of the electrodes and the ...

Embodiment 3

[0044] The main difference between this implementation process and Embodiment 1 and Embodiment 2 is that the structure of the vibration system is different, such as Figure 11 , Figure 12 and Figure 13 As shown, the vibration system in this implementation process is square, the diaphragm 21 and the flexible circuit board 4 are both square structures, the internal electrode 41a is arranged in a strip structure, and a diaphragm extension is also provided on the short axis of the diaphragm 21 231 , the conductive coating 5 is disposed on the front of the diaphragm 21 and electrically connected to the diaphragm extension 213 , this implementation process can also achieve the technical effects of the first and second embodiments.

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Abstract

The invention provides a minitype moving-coil electroacoustic transducer, which includes an accessory system, a vibrating system and a magnetic circuit system; the accessory system includes a shell; the vibrating system includes a diaphragm and a voice coil; the diaphragm includes a globe-roof part and an corrugated part supporting the diaphragm; the voice coil is also provided with a lead; moreover, the surface of the diaphragm is provided with a conductive coating which connects at least two circuits; the central area of the diaphragm is provided with a flexible circuit board; and the lead is electrically connected with the conductive coating through electrical connection. The design can improve the acoustical property simultaneously when reducing the distortion of the minitype moving-coil electroacoustic transducer, improve the electrical connection property of the minitype moving-coil electroacoustic transducer, and can also simplify the production and assembling processes of the minitype moving-coil electroacoustic transducer, realize the automatic production of products, reduce the production cost, and improve the production efficiency.

Description

technical field [0001] The invention specifically relates to a miniature dynamic electroacoustic conversion device. Background technique [0002] With the development of the portable consumer electronics market, a large number of miniature electro-acoustic devices, especially miniature dynamic electro-acoustic conversion devices have been widely used. The working principle of the miniature dynamic electro-acoustic conversion device is: the changing AC signal causes the voice coil located in the magnetic gap to vibrate up and down, thereby driving the vibration system to vibrate and produce sound, such as Figure 14 , Figure 15 and Figure 16 As shown, the vibration system of the known miniature dynamic electro-acoustic transducer with dual magnetic circuit structure includes a diaphragm 21 and a voice coil 22, and the diaphragm 21 includes a ring portion 211, an edge portion 213, a ball top 214 and a voice coil. 22, the bonding part 215 combined with the voice coil 22 is ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04R9/02H04R9/04
CPCH04R7/125H04R7/127H04R9/045
Inventor 刘春发徐同雁
Owner GOERTEK INC