Loudspeaker and portable electronic device

A technology of electronic equipment and loudspeakers, applied in the field of loudspeakers and portable electronic equipment, can solve problems affecting high-frequency acoustic performance, difficult to achieve broadband playback, etc., and achieve the effect of overcoming split vibration

Inactive Publication Date: 2011-03-30
U TECH BEIJING TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] Although the existing dynamic speaker can achieve basic acoustic response, it is difficult to achieve broadband playback because it is prone to split vibration at high frequencies
For example, if figure 2 As shown, the traditional diaphragm has split vibration at high frequency, which affects its high-frequency acoustic performance

Method used

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  • Loudspeaker and portable electronic device
  • Loudspeaker and portable electronic device
  • Loudspeaker and portable electronic device

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Embodiment Construction

[0027] In order to express the purpose, technical solutions and advantages of the embodiments of the present invention more clearly, the embodiments of the present invention will be further described in detail below in conjunction with the accompanying drawings and specific examples.

[0028] In the embodiment of the present invention, the traditional dynamic speaker and the piezoelectric speaker are combined, and a structure similar to the traditional large-diameter coaxial speaker is used. The embodiment of the present invention utilizes the principle of the coaxial loudspeaker, and attaches the piezoelectric body to the surface layer of the diaphragm on the basis of the structure of the traditional dynamic loudspeaker, so that it can cooperate with the traditional dynamic loudspeaker to form a comprehensive system. The low-frequency response is completed by the traditional dynamic speaker, and the high-frequency response is completed by the high-frequency characteristics of ...

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PUM

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Abstract

The invention discloses a loudspeaker comprising a frame and a magnet, wherein the magnet is integrally arranged on the frame and positioned in the frame, a vibrating diaphragm and a voice coil are connected and arranged on the frame, the vibrating diaphragm comprises an arch top and a folding ring, a first piezoelectric body is attached to the surface layer of the arch top, and the vibrating diaphragm and the first piezoelectric body are driven by a drive circuit to jointly form coaxial concurrent loudspeaking effect. The invention also discloses an electronic device. After being used, the loudspeaker overcomes the defect that the traditional moving-coil type loudspeaker is easy to generate partition vibration at high frequency and realizes broadband playback, and otherwise, because the piezoelectric body has the advantages of small volume, no magnetic field interference and low power consumption, the invention is very suitable for a mobile telephone or other portable electronic devices.

Description

technical field [0001] The present invention relates to the technical field of electro-acoustic transduction, and more specifically, relates to a loudspeaker and a portable electronic device. Background technique [0002] The loudspeaker is a very commonly used electroacoustic transducer device, which can be seen in electronic circuits that produce sound. There are many kinds of loudspeakers, which can be divided into moving coil (electric type), capacitive (electrostatic), piezoelectric (crystal or ceramic), electromagnetic (spring type), ion and Pneumatic speakers, etc.; according to the sound radiation material, it can be divided into paper cone type, horn type, diaphragm type, etc.; according to the working frequency, it can be divided into bass, midrange, treble, etc.; according to the impedance of the voice coil, it can be divided into low impedance and high impedance ; According to the effect, it can be divided into direct radiation and ambient sound. [0003] Most ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04R23/02
Inventor 袁世明
Owner U TECH BEIJING TECH
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