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Bone conduction device

A bone conduction and bone conduction vibrator technology, which is applied to bone conduction transducer hearing equipment, sensors, sensor parts, etc., can solve the problems of unsatisfactory sound quality conduction, increase processing costs, and cannot stand a foothold, and reduce battery life. The capacity and weight of the control motor, the effect of perfect sound quality, high elastic limit

Pending Publication Date: 2019-12-03
DONGGUAN WUJIANG TECH INVESTMENT CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, in the actual use process, it is found that the anti-rust and anti-corrosion performance of steel materials is really average, especially the part of the bone conduction device that contacts human skin during use (the environment that has been eroded by sweat and oil for a long time) is very easy to rust, and due to the density High and its own characteristics, it is difficult to be satisfactory in sound quality transmission, especially in pursuit of better sound quality, so that the components such as the sound transmission vibration plate are designed to be longer and larger
When the vibrator vibrates, the vibrating plate transmits different amplitudes according to the frequency released by the vibrator. Due to the limitation of its own elastic limit and high elastic modulus, the steel material can only produce the required vibration when the vibrating plate is required to achieve a large force. The amount of deformation, which makes the battery capacity and electronic control ability of the bone conduction device need to be enhanced in order to achieve the expected sound quality effect, which increases energy consumption (higher sound quality requires a larger battery), and makes the weight of the bone conduction device high No, it not only increases the processing cost, but also makes the overall structure of the bone conduction device bulky, which runs counter to the current trend of thin and light electronic products, and naturally cannot gain a foothold in the consumer market
[0009] Although iron and steel materials have very obvious shortcomings, because the comprehensive performance of the materials that may be used for replacement in the prior art is not as good as that of steel materials, especially when it comes to lightweight design, those skilled in the art consider the requirements of light and thin design , it will not be replaced by materials with a higher density than steel materials, and some materials with lower densities than steel materials (such as special plastics, magnesium alloys, aluminum alloys) cannot meet the requirements in terms of sound quality conduction, so steel materials are still First choice for metal components on bone conduction devices

Method used

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Examples

Experimental program
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Effect test

Embodiment 1

[0039] Embodiment 1 Piezoelectric bone conduction device

[0040] Piezoelectric bone conduction device is a device that uses the inverse piezoelectric effect of piezoelectric ceramics to conduct sound transmission. The piezoelectric vibrator is directly driven by an electrical signal with audio frequency, and vibration is generated through the mechanical deformation of the piezoelectric vibrator. The vibration is transmitted to the human body through the skull. The cochlea to perceive sound. The piezoelectric vibrator is the most important core structure in the piezoelectric bone conduction device. The bone conduction device using the piezoelectric vibrator generally has a resonance frequency of 1KHz or higher, so the occurrence of the low frequency region of the piezoelectric bone conduction device is easy. Insufficient reproduction, how to fully conduct conduction in the low-frequency region is the research focus of piezoelectric bone conduction devices.

[0041] Piezoelect...

Embodiment 2

[0045] Embodiment 2 Electromagnetic bone conduction device

[0046] The principle of the electromagnetic bone conduction device is similar to that of the piezoelectric type, except that the bone conduction vibrator is a composite structure of magnets.

[0047] as attached image 3 Shown is a schematic diagram of the simple structure of the electromagnetic bone conduction device. The bone conduction device mainly includes a bone conduction vibrator 304, a fixed structure 302 arranged on both sides of the bone conduction vibrator, a protective front shell 301, and a protective rear shell 303, wherein any one of the protective front and rear shells can be used as a conduction conductor at the junction with the human body. The material is the same as the conduction column 203 in Embodiment 1.

[0048] The above-mentioned structures can all be made of amorphous alloy materials or partially made of amorphous alloy materials, and some of them are made of amorphous alloy materials, ...

Embodiment 3

[0051] In a piezoelectric bone conduction device or an electromagnetic bone conduction device, one or more of its internal or external skeleton structure, external shell structure or connection structure is made of amorphous alloy or partially made of amorphous alloy, For example, the connection part in the middle of the rear-mounted bone conduction earphone (overall structure), the outer shell and the inner shell that protect the sound transmission components on both sides, etc., in these components that are only used as structural parts, the proportion of amorphous alloys in terms of volume, Greater than or equal to 10% of the overall metal material component can meet the demand, and the proportion of amorphous state can be increased according to the use requirements, up to 90% (excessively high amorphous content puts higher demands on the amorphous alloy manufacturing process requirements, and the cost of preparation soars). The thickness of metal material components made o...

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PUM

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Abstract

The invention discloses a bone conduction device which is various types of devices adopting bone conduction technology, the bone conduction device comprises a bone conduction module used for transmitting sound, the bone conduction module is provided with a metal material assembly, and all or part of the metal material assembly in the bone conduction module is made of amorphous alloy. According tothe bone conduction device, the tone quality of sound transmitted by the bone conduction device is better; the deformation amount realized in the amorphous alloy deformation process can conduct different tone quality effects; the amorphous alloy has stronger realization space in the aspect of tone quality, so that a wearer can obtain a better tone quality level by changing, and the sound effect and tone quality which can be obtained by other conventional materials such as a heavy bottom tone, a high pitch and the like through higher deformation force can be obtained by using an amorphous alloyof a specific system without changing the overall structural design.

Description

technical field [0001] The invention relates to a bone conduction device. Background technique [0002] The auditory system is an important sensory organ for human beings to receive external signals. Under normal circumstances, the sound wave generated by the vibration of the sound source is transmitted to the inner ear through two channels: one is transmitted to the inner ear through the external auditory canal, the tympanic membrane and the ossicle chain composed of three ossicles, that is, the air conduction of the sound wave. It is the main conduction path of normal hearing; the second is to transmit directly to the inner ear through the skull, that is, bone conduction, which has little effect under normal physiological conditions. [0003] The main way of bone conduction to transmit sound is that the sound passes through the skull to vibrate the cochlea wall. There are two main conduction modes: [0004] First, compression bone conduction (Compression Bone Conduction)...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04R1/10H04R1/08G02C11/00
CPCG02C11/00H04R1/08H04R1/1091H04R2460/13
Inventor 李扬德卢昆高宽朱旭光
Owner DONGGUAN WUJIANG TECH INVESTMENT CO LTD
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