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Sounder

A sounder and generator technology, applied in the direction of transducer shell/cabinet/bracket, diaphragm structure, planar diaphragm, etc., can solve the problem of difficult-to-attach wearable devices, difficult to stimulate periodic changes in temperature, and thin-film heat dissipation area Limited and other issues

Inactive Publication Date: 2020-10-23
SOUTH CHINA UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, it is difficult to excite periodic changes in temperature due to the limited heat dissipation area of ​​the film
At the same time, conductive films are usually not stretchable, making it difficult to make attached wearable devices

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0041] The utility model relates to a sound generator, which contains conductive materials in vertical structures, and emits sound through the conductive materials in vertical structures by thermoacoustic effect.

[0042] The conductive material containing the vertical structure has a planar structure part 200 and a vertical structure part 100, and the end of the vertical structure part 100 is at least bridged to the planar structure part 200, such as figure 1 shown.

[0043] The vertical structural part 100 of the sound generator is at least one of a vertical sheet-shaped structural part or a column-shaped convex structural part. It should be noted that the vertical structure part 100 of the present invention may only have a vertical sheet structure part or a columnar protrusion structure part, or may include a vertical sheet structure part and a columnar protrusion structure part.

[0044] When the vertical structure portion 100 is a vertical sheet structure portion, the ve...

Embodiment 2

[0058] A sound generator, other features are the same as in Embodiment 1, and also has the following characteristics: the generator, the generator does not fail within the stretch range of 0% to 50%, and the sound that can still be emitted when stretched by 10% is not distorted .

[0059] Further, the generator of the present invention does not fail within the stretching range of 15% to 50%, for example, it can still emit sound under stretching conditions of 20%, 25%, 35%, 40%, and 45%.

[0060] The sounder has a wide range of sounding frequencies, and the stretching up to 50% still does not fail the sounding, so it is suitable for sticking to the skin or other curved surfaces, and has the prospect of a wearable sounder.

[0061] For this sound generator, defining the total thickness of the vertical structure part 100 as C, there exists 100 nm≤C≤100 μm. The thickness of the vertical structure part 100 can be flexibly adjusted according to actual needs.

[0062] The conductiv...

Embodiment 3

[0068] a sound generator such as figure 2 As shown, other features are the same as those in Embodiment 2, except that: a functional layer and a conductive electrode 300 stacked with the planar structure are also provided, and the conductive electrode 300 is respectively located at both ends of the sounder. Wherein the functional layer is at least one of a stretchable substrate layer, a modification layer or an interface layer.

[0069] When provided with a stretchable substrate, the stretchable substrate layer is polydimethylsiloxane. The functional layer in this embodiment is specifically a stretchable substrate layer.

[0070] It should be noted that, the functional layer of the present invention may be only one of the stretchable substrate layer, the modification layer or the interface layer, or may be a variety of different combinations, and the specific implementation depends on the actual situation.

[0071] The alternating current can be applied to the sounder throug...

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PUM

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Abstract

A sounder comprises a conductive material of a vertical structure, and sounds are produced through the conductive material of the vertical structure by means of the thermo-acoustic effect. The conductive material containing the vertical structure has a planar structure portion and a vertical structure portion, and an end of the vertical structure portion is at least bridged to the planar structureportion. The vertical structure portion is at least one of a vertical sheet-shaped structure portion or a columnar bulge structure portion. The sounder disclosed by the invention can realize soundingthrough the thermo-acoustic effect. Moreover, the sounder does not need to perform intrinsic deformation by means of any stretchable structure, and can still make a sound even in the stretching process. The sounder is wide in sounding frequency range, the sounding frequency range can reach 100 Hz to 100 kHz, the structure is extremely simple, and the production cost and the application cost of adevice can be greatly reduced. Finally, the vertical structure part of the sounder can greatly increase the surface area and improve the heat dissipation effect.

Description

technical field [0001] The invention relates to the field of conductive materials and sound-generating devices, in particular to a sounder. Background technique [0002] With the development of science and technology, people also put forward different requirements for devices with the same function. It has become the norm for devices of different forms to be used in specific and different scenarios, and it is also inevitable to comply with market demand. Compared with traditional solid-state wearable devices, adhesive wearable devices have become a research hotspot in the field of electronic devices because they require skin contact and attachment, which makes them more comfortable than traditional solid-state wearable devices. [0003] As a tool for sound generation, speakers are an important part of multimedia equipment and an important information transmission medium. Traditional speakers can be divided into moving coil (such as electric), capacitive (such as electrostati...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04R1/02H04R7/04
CPCH04R1/02H04R7/04H04R2307/027
Inventor 兰林锋邓才灏彭俊彪
Owner SOUTH CHINA UNIV OF TECH