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Vibrating diaphragm and sound production device

A technology of sound-generating devices and vibrating parts, applied in the direction of non-planar diaphragm/cone, diaphragm structure, etc., can solve the problems of poor mechanical properties, high-frequency acoustic performance of sound-generating devices can not achieve the ideal effect, and the thickness of the dome is large. Achieve the effects of light weight, improved transient characteristics, and larger design space

Inactive Publication Date: 2019-05-28
AAC TECH NANJING
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] However, the dome of the diaphragm in the related art is a composite material made of metal, foam, and metal. The dome has a large thickness and poor mechanical properties, which is different from the high rigidity and quality of the dome required in an ideal state. There is a certain gap in light requirements, so that the high-frequency acoustic performance of the sound-generating device cannot achieve the ideal effect

Method used

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  • Vibrating diaphragm and sound production device
  • Vibrating diaphragm and sound production device
  • Vibrating diaphragm and sound production device

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Experimental program
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Embodiment 1

[0042] Embodiment 1. The entire middle layer 41 is corrugated. The middle layer 41 is any one of carbon fiber reinforced resin composite material layer, graphene layer and metal material layer. The extending direction of the carbon fiber bundles of the first base material layer (not shown in the figure) and the second base material layer (not shown in the figure) is 90° to the extending direction of the corrugations of the intermediate layer 41 . The corrugation extension direction here refers to the direction in which the corrugations in the texture structure of the middle layer 41 expand outward.

Embodiment 2

[0043] Embodiment two, please refer to Figure 6 , the middle layer 641 is a reinforcing material with trapezoidal structure; the reinforcing material is any one of carbon fiber reinforced resin composite material, graphene and metal material. Each of the carbon fiber cloth layers of the first base material layer 642 and the second base material layer 643 is a single-layer structure formed by unidirectionally extending carbon fiber bundles, and each layer of the carbon fiber cloth The angle between the extension direction of the carbon fiber bundles of the layers is 0°; wherein the first base material layer 642 and the second base material layer 643 are a single-layer structure or a composite structure formed by laminating at least two layers of the carbon fiber cloth layers . The trapezoidal surface of the middle layer 641 is 90° to the direction of the fiber bundles in the first base material layer 642 and the second base material layer 643 .

[0044] see Figure 7 , the ...

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Abstract

The invention provides a vibrating diaphragm. The vibrating diaphragm comprises a vibration part and a dome, The dome comprises a middle layer, a first base material layer and a second base material layer, wherein the first base material layer and the second base material layer are respectively pasted and fixed on two opposite sides of the middle layer. the middle layer is a reinforcing layer witha preset shape; The first base material layer and the second base material layer are both carbon fiber reinforced resin matrix composite material layers. the reinforcing layer comprises a first surface and a second surface which are oppositely arranged, the first base material layer is attached to the first surface, the second base material layer is attached to the second surface, and at least one of the first surface and the second surface is provided with an uneven texture structure. The invention further provides a sound production device which comprises the vibrating diaphragm. Compared with the prior art, the vibrating diaphragm is simple in manufacturing process and has the characteristics of high specific modulus, high specific strength and low density, and the sounding device is high in sensitivity and good in high-frequency acoustic performance.

Description

【Technical field】 [0001] The invention relates to the field of electroacoustic conversion, in particular to a vibrating membrane and a sounding device used in portable electronic products. 【Background technique】 [0002] With the advent of the mobile Internet era, the number of smart mobile devices continues to rise. Among the many mobile devices, the mobile phone is undoubtedly the most common and portable mobile terminal device. At present, the functions of mobile phones are extremely diverse, one of which is the function of high-quality music. Therefore, sound-generating devices for playing sound are widely used in current smart mobile devices. [0003] The sound-generating device in the related art includes a basin frame and a vibration system, and the vibration system includes a diaphragm and a voice coil for driving the diaphragm to vibrate, and the diaphragm includes a vibrating part and a fold extending from the periphery of the vibrating part. The ring part and th...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04R7/14
Inventor 王宏远
Owner AAC TECH NANJING