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micro sound device

A sound-generating device, a miniature technology, applied in the direction of sensors, electrical components, etc., can solve problems such as unbalanced vibration, reduce the balance of the vibration system, limit the power of the vibration system, etc., and achieve the effect of good vibration balance, high stability, and high power

Inactive Publication Date: 2017-04-05
AAC ACOUSTIC TECH (SHENZHEN) CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] However, the voice coil in the vibration system of the micro-sounding device of the related art can only be fixedly supported by one of the diaphragms. When the vibration system works, it is easy to generate unbalanced vibration, so it is necessary to reduce the power and reduce the vibration. The balance of the system, thus limiting the power of the vibratory system and thus the acoustic performance of the tiny sound-generating devices using said vibratory system

Method used

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Embodiment Construction

[0022] The present invention will be further described below in conjunction with the accompanying drawings and embodiments.

[0023] Such as Figure 1-4 As shown, a miniature sound-generating device 10 includes a frame 1 , a vibration system 2 and a magnetic circuit system 3 fixed on the frame 1 . The vibration system 2 includes a diaphragm 21 fixed on the basin frame 1 and a voice coil 22 attached to the diaphragm 21. The magnetic circuit system 3 includes a magnetic cup 31 and a magnetic steel 32 placed in the magnetic cup 31. The magnetic cup 31 It includes a bottom wall 311 and a first side wall 312 bent and extended from the bottom wall 311 , the first side wall 312 forms a magnetic gap 33 with the magnetic steel 32 , and the voice coil 22 is placed in the magnetic gap 33 . Wherein, the vibration system 2 also includes a hollow support part 23 fixed on the voice coil 22. The support part 23 includes a concave part 231 and a first fixing part 232 and a second fixing part ...

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Abstract

The invention provides a miniature sounding device. The device comprises a frame and a vibration system and a magnetic circuit system, which are fixed on the frame, wherein the vibration system comprises a diaphragm fixed on the frame and a voice coil stuck to the diaphragm; the magnetic circuit system comprises a magnetic bowl and magnetic steel; the magnetic bowl comprises a bottom wall and a first side wall; a magnetic gap is formed between the first side wall and the magnetic steel; the voice coil is arranged in the magnetic gap; the vibration system also comprises a hollow support part fixed on the voice coil; the support part comprises a sunk part and a first fixing part and a second fixing part, which respectively buckle and extend on the two sides of the sunk part; the first fixing part is fixed at the end, far from the diaphragm, of the voice coil; and the second fixing part is fixed on the magnetic bowl. Compared with the related technologies, the miniature sounding device has high power, good vibration balance effect and higher stability during operation.

Description

[0001] 【Technical field】 [0002] The invention relates to a miniature sound-generating device, in particular to a miniature sound-generating device used in portable communication products. [0003] 【Background technique】 [0004] In order to adapt to the miniaturization and multi-functional development of various audio equipment and information communication equipment, the corresponding needs of the miniature sound-generating devices used in this type of equipment tend to be more miniaturized, and the cooperation with other components around the miniature sound-generating devices is better. Compactness, especially with the development of thinner and lighter mobile phones, the micro-sounding devices used in it not only require miniaturization, but also require high sound quality and stereo sound. The vibration system and magnetic circuit system used in the micro-sounding device are directly related to the sound quality of the micro-sounding device. The vibrating system of the ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04R9/02
Inventor 宋威
Owner AAC ACOUSTIC TECH (SHENZHEN) CO LTD