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Ultra-thin moving-coil type electro-acoustic conversing device

An electro-acoustic converter, moving coil technology, applied in the direction of sensors, electrical components, etc., can solve the problems of reducing the height of the product and the power of the product cannot be further improved, and achieve the effect of reducing the size of the product, improving the performance of the product, and increasing the power of the product

Active Publication Date: 2008-07-23
GOERTEK INC +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Common moving coil electroacoustic transducer diaphragm design generally includes an edge and a middle part, the edge part is bonded to the shell, and an upward protrusion is set in the middle part, which causes a difficulty, that is, the middle part of the diaphragm is the highest The position of the point is often significantly higher than the shell of the electroacoustic transducer and the magnetic circuit device. During the operation of the electroacoustic transducer, the vibration amplitude of the middle part of the diaphragm is relatively large, so the height reduction of the product is limited, and the power of the product is limited. cannot further improve
However, today's electronic products generally require electroacoustic transducers to be thin, high power, and excellent performance. These characteristics cannot be realized in the original structure.

Method used

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Examples

Experimental program
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Effect test

Embodiment 1

[0021] Embodiment 1: As shown in Figure 1, it is a schematic structural diagram of an embodiment of the present invention. In this embodiment, an ultra-thin electro-acoustic transducer includes a circular basin frame 101, an annular magnet 102 and an annular flower in turn. The magnetic circuit device composed of 103, the basin frame 101 has a flat bottom for placing the magnet 102 and the washer 103, and the raised part 101a extending toward the side of the magnet 102 and the washer 103 inside the magnet 102 and the washer 103 1. Inside the protruding part 101a, there is a pot frame recess 101b facing the bottom of the pot frame 101. The shape of the pot frame recess 101b is a trapezoidal recess with a large top and a small bottom, so that the magnet 102, the washer 103 and the protruding part 101a form a Annular magnetic gap; including a plastic shell 104, the magnetic circuit device is fixed together; including a diaphragm 105, the diaphragm 105 includes an edge portion 105a...

Embodiment 2

[0023] Embodiment 2: Fig. 2 is a schematic structural diagram of the second embodiment of the present invention, and Fig. 3 is a top view of the magnetic circuit part of the second embodiment of the present invention. This implementation case and implementation case 1 mainly have the following differences: 1. The shape of the ultra-thin electro-acoustic transducer is elongated, so the corresponding magnetic circuit structure is also elongated. Two elongated magnets 102, washer 103 is distributed on both sides of the basin frame 101; 2. The inside part of the raised part 101a of the side wall of the basin frame 101 is cut off, and a hole is formed in the center, so that the basin frame 101 is divided into left and right parts, forming two L-shaped strips 3. A plurality of symmetrically distributed small holes 101c are arranged on the position corresponding to the magnetic gap on the basin frame.

[0024] The design of this structure is in line with the structure design of more ...

Embodiment 3

[0025] Embodiment 3: Fig. 4 is a schematic structural view of the third embodiment of the present invention. This embodiment and the first embodiment mainly have the following differences: 1. The recess 101b of the frame 101 is partially cut off to form a hole 101d. A damper 108 is installed on the outside of the hole 101d; 2. The edge of the diaphragm 105 is pre-fixed and connected to a copper ring 107, and is fixed on the Washer 103 by using the copper ring 107; 3. The junction of the diaphragm edge 105a and the middle part 105b The 105c has a smooth design.

[0026] With the design of this structure, the hole 101d formed in the middle of the basin frame can be used as the rear sound hole to generate sound and maintain the air pressure balance inside and outside the electroacoustic transducer, and can be used to dissipate the heat generated by the long-term operation of the electroacoustic transducer. The hole 101d The damper 108 installed on the outside can adjust the perfo...

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PUM

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Abstract

The invention discloses an ultra-thin moving coil type electron-phonon converter which comprises an external magnetic circuit device, a vibration device and a shell, wherein the external magnetic circuit device comprises a basin frame whose edge is flat and middle portion forms a convex area and is installed on a magnet on the flat edge of the basin frame and a wors which is superposed on the magnet, wherein a magnet gap is formed between the convex area on the middle portion of the basin frame and the magnet and the wors, the vibration device comprises a voice coil which is located in the magnet gap and a vibration film which is adhered with the voice coil, wherein the shell wraps and fixes the external magnetic circuit device, the edge of the vibration film is fixed the outer surface of the shell or the wors, a basin frame depression which is directed to the bottom of the basin frame is arranged on the convex area on the middle portion of the basin frame, a vibration film depression which is directed to the basin frame depression and is corresponded to the basin frame depression is arranged on the middle portion of the vibration film, the moving coil type electron-phonon converter with the structure greatly lowers the product size, increases the product power, and increases the product performance.

Description

technical field [0001] The invention relates to a novel electroacoustic transducer. Background technique [0002] In recent years, with the rapid development of the market of electronic products such as mobile phones and notebook computers, dynamic electroacoustic transducers (generally including receivers and electroacoustic transducers) with excellent cost performance have been widely used. Common moving coil electroacoustic transducer diaphragm design generally includes an edge and a middle part, the edge part is bonded to the shell, and an upward protrusion is set in the middle part, which causes a difficulty, that is, the middle part of the diaphragm is the highest The position of the point is often significantly higher than the shell of the electroacoustic transducer and the magnetic circuit device. During the operation of the electroacoustic transducer, the vibration amplitude of the middle part of the diaphragm is relatively large, so the height reduction of the prod...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04R9/02
Inventor 任金龙王伟刘春发王斌程磊
Owner GOERTEK INC