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Air pressure blowing resistant acoustical-electric transducer

A technology of blowing sound, electricity and sensors, which is applied in the field of microphones, and can solve the problems of vibrating diaphragm damage and product failure.

Inactive Publication Date: 2013-02-20
SHANDONG GETTOP ACOUSTIC
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  • Summary
  • Abstract
  • Description
  • Claims
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AI Technical Summary

Problems solved by technology

[0003] During the assembly of MEMS sensors to mobile phones or other electrical products, the components after welding are usually blown with compressed air to remove the residue after welding. When the air pressure enters the sensor from the sound hole, it impacts the vibrating diaphragm, which may easily cause the vibrating diaphragm to be damaged, resulting in product failure

Method used

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Embodiment Construction

[0017] In order to make the above objects, features and advantages of the present invention more comprehensible, the present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0018] Such as figure 1 Shown is the structural diagram of the anti-air pressure blowing acoustic-electric sensor in the present invention. The structure of the anti-air pressure blowing acoustic and electric sensor includes: a protective net 11, a recessed part 12, a sound hole 13, a casing 14, and a wiring board 15, and components such as an ASIS chip, a MEMS chip, and a vibrating diaphragm are arranged on the wiring board 15, and are located on the wiring board 15. Inside the shell 14 , the shell 14 is fixed on the wiring board 15 . The position of the sound hole 13 of the shell 14 is recessed inwardly to form a recess 12 , the sound hole 13 is located in the recess 12 , and the protective net 11 is pasted on the position of t...

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Abstract

The invention provides an air pressure blowing resistant acoustical-electric transducer. The air pressure blowing resistant acoustical-electric transducer comprises a shell with sound holes, wherein at least one layer of protective screen is arranged in the sound hole of the shell. No protective device is arranged in the sound hole of the common micro-electro-mechanical system (MEMS) transducer. As the protective screen is arranged, the impact force of air pressure on diaphragms is reduced in the air pressure blowing process in the assembling procedure, the influence on the vibration diaphragms caused by the air pressure impact can be effectively reduced or avoided, and the transducer is protected from being damaged in the assembling process.

Description

technical field [0001] The invention relates to a microphone, in particular to an anti-air pressure blowing acoustic-electric sensor. Background technique [0002] Microelectromechanical system (Microelectro-Mechanical-Systems, MEMS) microphone (MEMS MIC) is an acoustic-electric sensor (a device used to convert sound signals into electrical signals). In order to convert sound signals into electrical signals, the sensor has a The vibrating diaphragm must have a sound entrance (sound hole) at the same time. The sound enters the sensor through the sound hole, causing the sensor diaphragm to vibrate and generate an electrical signal. The diaphragm of MEMS MIC is relatively thin, with a thickness of about 2um, and it is extremely vulnerable to damage when it is blown by air pressure. [0003] In the process of assembling MEMS sensors to mobile phones or other electrical products, the welded components are usually blown with compressed air to remove the residue after welding. Whe...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04R1/02
Inventor 李明
Owner SHANDONG GETTOP ACOUSTIC
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