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Diaphragm domes, sound emitting devices and electronic equipment

A sound-generating device and dome technology, applied in the direction of non-planar diaphragm/cone, sensor, electrical components, etc., can solve the problems of low strength, unsatisfactory product performance and reliability, etc., to improve strength, reduce weight, The effect of widening the high frequency upper limit

Active Publication Date: 2021-03-30
GOERTEK INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the dome of this structure has low strength and cannot meet the needs of product performance and reliability to a certain extent.

Method used

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  • Diaphragm domes, sound emitting devices and electronic equipment
  • Diaphragm domes, sound emitting devices and electronic equipment
  • Diaphragm domes, sound emitting devices and electronic equipment

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0049] A diaphragm dome 10, the diaphragm dome 10 has a single-layer structure and is formed of nanometer graphene oxide material. In this embodiment, the diaphragm dome 10 adopts a hot pressing process and is formed by one-time hot pressing, and the diaphragm dome 10 is in the shape of a flat plate. Wherein, the thickness of the nano-graphene oxide layer is 0.001mm-0.100mm.

[0050] After testing, the sound-generating device made from the diaphragm dome 10 of this embodiment has a high-frequency upper limit of up to 20KHz.

Embodiment 2

[0052] A diaphragm dome 10 comprising a layer of nano-graphene oxide layer 11, a foam material layer 12 and a metal foil layer 14, the foam material layer 12 being sandwiched between the nano-graphene oxide layer 11 and the metal foil layer 14 (Such as figure 1 shown). Wherein, the nano-graphene oxide layer 11 is formed of nano-graphene oxide material. The foam material layer 12 is any one of polymethacrylimide foam layer, polyimide foam layer, polyester foam layer, metal foam layer or a combination thereof. The thickness of the foam material layer 12 is 0.01mm-0.5mm, and the cell diameter is 0.1um-500um. The thickness of the nanometer graphene oxide layer is 0.001mm-0.100mm.

[0053] In this embodiment, the diaphragm dome 10 adopts a hot pressing process and is formed by one-time hot pressing, and the diaphragm dome 10 is in the shape of a flat plate.

[0054] After testing, the sound-generating device made from the diaphragm dome 10 of this embodiment has a high-frequenc...

Embodiment 3

[0056] A kind of vibrating film dome 10, comprises two layers of nano graphene oxide layers 11 and foam material layer 12, foam material layer 12 is sandwiched between two layers of nano graphene oxide layers 11 (as figure 2 shown). Wherein, the foam material layer 12 is any one of polymethacrylimide foam layer, polyimide foam layer, polyester foam layer, metal foam layer or a combination thereof . The thickness of the foam material layer 12 is 0.01mm-0.5mm, and the cell diameter is 0.1um-500um. The thickness of the nanometer graphene oxide layer is 0.001mm-0.100mm.

[0057] In this embodiment, the diaphragm dome 10 adopts a hot pressing process and is formed by one-time hot pressing, and the diaphragm dome 10 is in the shape of a flat plate.

[0058] After testing, the sound-generating device made from the diaphragm dome 10 of this embodiment has a high-frequency upper limit of up to 20 KHz.

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Abstract

The invention discloses a diaphragm dome, a sounding device and an electronic device, wherein, the diaphragm dome comprises at least one nanometer graphene oxide layer, and the nanometer graphene oxide layer is formed of at least nanometer graphene oxide material. The technical proposal of the invention provides a diaphragm dome with high modulus and low density, which can effectively prevent thediaphragm from generating divided vibration in a high frequency band and broaden the upper limit of the high frequency of the sounding device.

Description

technical field [0001] The invention relates to the technical field of electroacoustic products, in particular to a diaphragm dome, a sounding device and electronic equipment. Background technique [0002] The sounding device plays an increasingly irreplaceable role in people's life and work. Among them, the dome (DOME) is located in the middle of the diaphragm structure of the sounding device. It is the unit that assists high-frequency sound in the diaphragm. Prevent the diaphragm from generating split vibration in the high frequency band, and expand the bandwidth of the product. In the existing structure of sound-generating devices, the dome is generally a three-layer composite structure, and the dome structure of the three-layer structure formed by aluminum foil / polymethacrylimide foam material (PMI) / aluminum foil is widely used. However, the dome of this structure has low strength and cannot meet the requirements of product performance and reliability to a certain exten...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04R7/12
CPCH04R7/127
Inventor 曹大学李春李美玲
Owner GOERTEK INC