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Minitype acoustic generator

A sounder, miniature technology, applied in the direction of sensors, electrical components, etc., can solve the problems affecting the intermediate frequency characteristics of products, achieve the effect of good leakage and improve frequency response characteristics

Inactive Publication Date: 2009-10-21
AAC TECH PTE LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] However, in order to improve product performance, the distance between the pole piece and the voice coil is getting smaller and smaller. With the increase of the magnetic circuit area, the area of ​​the dome of the diaphragm is also increasing. The gap between the pole piece and the voice coil cannot provide enough The leakage of the product affects the IF characteristics of the product

Method used

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Embodiment Construction

[0019] The present invention will be further described below in conjunction with the accompanying drawings and embodiments.

[0020] see figure 1 and figure 2 , the miniature sounder 1 of the present invention is mainly applied to portable consumer electronic products such as mobile phones, in order to send out sound prompts.

[0021] Generally speaking, the miniature sound generator mainly includes a bowl-shaped base, an upper cover connected to the base and provided with a sound hole, and the base and the upper cover form a cavity. The cavity is provided with a permanent magnet and a pole piece housed in the base and forming a magnetic gap with the base, a diaphragm adjacent to the upper cover, a voice coil connected with the diaphragm and suspended in the magnetic gap, A circuit board is arranged on the outside of the base to realize connection with the external circuit, and the incoming and outgoing lines of the voice coil pass through the holes provided on the base to ...

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PUM

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Abstract

The invention provides a minitype acoustic generator, mainly comprising a base, a magnetic bowl embedded in the base, an alnico arranged in the magnetic bowl, a pole piece attached on the alnico, a coil arranged in the magnetic clearance formed by the magnetic bowl and the alnico, a vibration film connected with one end of the coil, and an upper cover; the upper cover and the base form a containing chamber commonly; the pole piece comprises a pole piece top surface and a pole piece side wall extending from the top surface of the pole piece; the alnico comprises an alnico top surface and an alnico side wall extending from the top surface of the alnico; and the side wall of the pole piece is provided with a first through trough and the position of the side wall of the alnico corresponding tothe first through trough is provided with a second through trough. The minitype acoustic generator improves the frequency response characteristic.

Description

technical field [0001] The invention relates to a miniature sounder, in particular to a miniature sounder applied to portable consumer electronic products such as mobile phones. Background technique [0002] Miniature sound generating devices are widely used in portable electronic devices such as mobile phones, notebook computers, and hearing aids. With the rapid development of these portable electronic devices, people's functional requirements are getting stronger and stronger, and the miniature sound-generating devices applied to them are also developing correspondingly and rapidly. [0003] The micro-sounder of the related structure mainly includes a bowl-shaped base, an upper cover connected to the base and provided with a sound hole, and the base and the upper cover form a cavity. The cavity is provided with a permanent magnet and a pole piece housed in the base and forming a magnetic gap with the base, a diaphragm adjacent to the upper cover, a voice coil connected wi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04R9/06
Inventor 邵益黄兴志
Owner AAC TECH PTE LTD
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