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Mirror image vibration type loudspeaker box

A vibration type, speaker technology, applied in the direction of frequency/directional characteristic device, etc., can solve the problems of increasing the volume of the speaker body, sound output distortion, complex internal structure, etc., to achieve the effect of improving strength, avoiding vibration, and small size

Inactive Publication Date: 2012-07-11
李世煌
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

According to the characteristics of the existing general electromagnetic speaker box, its performance and volume are a pair of mutually restrictive factors. When its volume becomes smaller and smaller, the performance of sound reproduction, especially in the middle and low frequency bands, becomes worse and worse; if the traditional method is used Adding an inverted tube, a labyrinth or a horn will improve the performance very little. At the same time, it will inevitably increase the volume of the speaker body and make its internal structure complicated.
On the other hand, when the electromagnetic speaker or the passive diaphragm on the speaker body vibrates under high energy, it will inevitably cause the speaker to have a reverse impulse, causing the box to vibrate violently, causing unnecessary vibrations in many parts of the box. Resonance causes the sound output to be colored and distorted; based on this, making the speaker body solid and heavy is an effective solution to this problem, but it directly conflicts with its portability

Method used

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  • Mirror image vibration type loudspeaker box
  • Mirror image vibration type loudspeaker box
  • Mirror image vibration type loudspeaker box

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] Such as figure 1 It is a schematic cross-sectional view of Embodiment 1 of the present invention; figure 2 yes figure 1 The left view of the embodiment; be explained in conjunction with these two figures:

[0031] The speaker body 1 is a symmetrical hexahedron with an output unit 10 on its left side. The output unit includes a flat mounting surface 13 . The mounting surface 13 has a cone hole 11 and a diaphragm hole 12 . A loudspeaker unit 21 is located in the sound box body 1, and is loaded on the sound cone hole 11 in a post-loading manner; a passive radiation unit 22 is loaded on the diaphragm hole 12; and the loudspeaker unit 21 and the passive radiation unit 22 are connected to the mounting surface Keep sealed. Therefore, the sound box body 1 is in a sealed state. The passive radiation unit 22 has a passive diaphragm 23 , and when the speaker 21 is driven to vibrate, the passive diaphragm 23 will resonate under the drive of the air in the box space 2 .

[003...

Embodiment 2

[0034] image 3 It is a sectional view of Embodiment 2 of the present invention; Figure 4 yes image 3 Embodiment left view; be explained in conjunction with these two figures:

[0035] The mirror image mode of speaker unit 21 and 21 ', passive radiation unit 22 and 22' is similar to Embodiment 1, the difference is that the diameter D of speaker unit 21 and 21 ' in this example is more than the thickness H of the sound box body 1, that is, the installation The distance between the surfaces is large, so that the load on the speaker unit cone is relatively large, and the sound quality obtained is further improved; in particular, because the thickness of H can be made relatively small, the speaker body 1 can become very thin, almost only It is only twice the thickness of the speaker unit, so it can be applied to electro-acoustic instruments and flat-panel devices. The passive diaphragms 23 and 23' on both sides can produce sound on both sides, radiate in all directions, and si...

Embodiment 3

[0038] Such as Figure 5 , the cross-sectional view of the third embodiment of the present invention; the sound box body 1 of this embodiment is similar to the second embodiment, the difference is that its thickness can be less than twice the thickness of the speaker units 21 and 21', and the volume in the box space 2 can be further compressed . The loudspeaker units 21 and 21' of this solution are fixed on the sound box body 1 in a front-loaded manner, and the body of the loudspeaker is located outside the sound box body 1. This solution can be considered in some occasions where the thickness is limited, and the speaker units 21 and 21' can be properly covered in other unrestricted positions. This solution realizes the thinnest solution, because the thickness of the sound box body 1 is no longer limited by any internal components.

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Abstract

The invention discloses a mirror image vibration type loudspeaker box, which is characterized by comprising a sealed loudspeaker box body which is provided with an output unit. The output unit comprises at least one cone hole, at least one diaphragm hole, a loud speaker unit and a passive radiation unit. The loudspeaker unit is loaded on the cone hole to be sealed. The passive radiation unit is provided with a passive diaphragm and loaded on the diaphragm hole to be sealed. The vibration direction of the loudspeaker unit is identical with the vibration direction of the passive diaphragm of the passive radiation unit. The mirror image vibration type loudspeaker box further comprises a mirror image unit which is in mirror symmetry with the output unit and the loudspeaker unit and the passive radiation unit which are positioned on the output unit in the reversed direction of the vibration direction. The cone and the passive diaphragm of the loudspeaker unit vibrate in mirror image mode with the same direction and equivalence. The left and right immediate momentums of the loudspeaker box body are balanced; sound coloration, which is caused by a lot of extra unrelated harmonic waves generated by the vibration of the loudspeaker box body, is avoided; and the purpose of small volume and excellent sound effect of the loudspeaker is achieved.

Description

technical field [0001] The invention relates to a sound box with image vibration characteristics. Background technique [0002] Speakers are widely used in portable electro-acoustic conversion equipment, and the requirement is to convert audio electrical signals into audio faithful to the original sound output with a small volume. According to the characteristics of the existing general electromagnetic speaker box, its performance and volume are a pair of mutually restrictive factors. When its volume becomes smaller and smaller, the performance of sound reproduction, especially in the middle and low frequency bands, becomes worse and worse; if according to the traditional method Adding an inverted tube, a labyrinth or a horn will improve the performance very little. At the same time, it will inevitably increase the volume of the speaker body and make its internal structure complex. On the other hand, when the electromagnetic speaker or the passive diaphragm on the speaker b...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04R1/20
Inventor 李世煌
Owner 李世煌
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