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Electromagnetic drive resonance phonation device

A resonant sound and electromagnetic drive technology, applied in the direction of electrical components, sensors, etc., can solve the problems of inconvenient installation and complex structure, and achieve the effect of simple structure, small size, and convenient manufacturing and assembly

Inactive Publication Date: 2009-07-01
王广林
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to solve the problems of complex structure and inconvenient installation in the prior art, and provide an electromagnetically driven resonant sounding device with simple structure, small volume, wide sound range and convenient manufacture.

Method used

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  • Electromagnetic drive resonance phonation device
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  • Electromagnetic drive resonance phonation device

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0018] refer to figure 1 As shown, the electromagnetically driven resonant sounding device provided by the present invention includes a housing 1, and a housing collar 1a is provided at the lower end of the housing 1 . A supporting part 2 is provided in the shell 1, and the supporting part 2 is an iron cap with a U-shaped cross-sectional shape. A permanent magnet 3 is arranged in the supporting part 2, and a voice coil support 8 is provided on the periphery of the permanent magnet 3. In the voice coil support 8 is provided with a driving voice coil 7 with an audio signal input terminal, and the audio signal input terminal is used to input sound and electrical signals to the driving voice coil 7; 3 and the vibrating end cap 6 are provided with a first elastic body 5, and the outer cylindrical surface of the first elastic body 5 is connected with the voice coil support 8 in cooperation. A second elastic body 9 is provided between the housing 1 and the supporting member 2 , and ...

Embodiment 2

[0021] refer to figure 2 As shown, the electromagnetically driven resonant sounding device provided by the present invention has the same main structure as that of Embodiment 1, except that the permanent magnet 3 in this embodiment is composed of an upper magnet 3a, a lower magnet 3b and a partition 3c. The magnet 3a and the lower magnet 3b are respectively fixed on both sides of the partition 3c, and the same poles of the upper magnet 3a and the lower magnet 3b are opposite to each other. This kind of magnetic circuit design with positive and negative magnetism and high magnetic flux density can make the magnetic circuit at point A It has a high magnetic flux density, so that the driving voice coil 7 can obtain more large vibration driving force. The bottom of the vibrating end cover 6 is connected with a buffer shock pad 6a. The present invention uses the first elastic body 5, the second elastic body 4 and the third elastic body 9 to position and drive the voice coil 7 to ...

Embodiment 3

[0023] refer to image 3 As shown, the electromagnetically driven resonant sounding device provided by the present invention is basically the same as the second embodiment, except that the top of the housing 1 is provided with a through hole that can accommodate the support 2, and the end cover 1a is connected to the housing 1 by screws. The support member 2 is fixed inside the housing 1 . Therefore, the shell 1 does not completely cover the support 2, and the third elastic body 9 is also arranged between the periphery of the support 2 and the shell 1, thereby reducing the overall height of the sounding body and achieving the effect of miniaturizing the sounding body; The vibration signal is transmitted to the sounding board through the vibrating end cap 6 .

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PUM

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Abstract

The invention relates to a resonance sound-generating device through an electromagnetic driving manner. A bearing piece (2) is arranged in an outer casing (1); a permanent magnet (3) is arranged in the bearing piece (2); a voice coil suspension (8) is arranged at the outer periphery of the permanent magnet (3); and a drive voice coil (7) is arranged on the voice coil suspension (8). The invention is characterized in that a vibration end cover (6) is connected with one end of the outer casing (1), and the voice coil suspension (8) is fixedly connected with the vibration end cover (6), so as to enable the vibration generated by the voice coil suspension (8) to be transferred to the vibration end cover (6); and a first elastomer(7), a second elastomer (8), and a third elastomer (9) are arranged in the casing. After the structure is adopted, the drive voice coil is utilized to be input with sound signals, so as to enable the voice coil suspension in the magnetic field of the permanent magnet to generate axial vibration, thereby transferring electric signals into the mechanical vibration; and the vibration is transferred to a flat plate through the vibration end cover, so as to drive the flat plate to be in resonant and generate the sound. Furthermore, the invention has the advantages of simple structure, small volume, wide vocal range, and convenient manufacture and assembly.

Description

technical field [0001] The invention relates to a sounding device, in particular to an electromagnetically driven resonant sounding device. Background technique [0002] The traditional sounding body is mainly a horn, which emits sound through the vibration of the vibrating basin; with the development of science and technology, there have been acoustic energy converters made of magnetostrictive materials, and the vibration energy is transmitted to the plate-shaped sounding body through a rigid transmission mechanism. (such as desktops, glass, cabinet door panels, etc.), so that the sounding board emits sound, and this technology can be used to manufacture flat-panel loudspeakers, such as the disclosed "a kind of Optimizing method and equipment for the output power of the vibration driver and the products made by this method”, the disclosed product is to combine the large magnetostrictive rod, coil, permanent magnet sheet and coil frame in the shell, and derive the vibration ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04R9/02
Inventor 王广林
Owner 王广林
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