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Magnesium alloy integrally cast sound box and manufacturing method thereof

A kind of integral casting and magnesium alloy technology, which is applied in the components of audio equipment, magnesium alloy integral casting speakers and their manufacturing fields, can solve the problems of large overall weight of speakers, good aluminum alloy speakers, and loss of sound field energy, so as to achieve pure sound quality and preservation Good accuracy, eliminate standing wave effect

Inactive Publication Date: 2009-11-04
SHENYANG AEROSPACE UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] Although plastic has good formability, its rigidity is too low and the sound quality is dead
The aluminum alloy speaker is easy to cause resonance due to too good rigidity, which makes the sound field energy loss
The specific gravity of aluminum alloy is much greater than that of wood. In order to reduce resonance, the speaker wall must have a certain thickness, so the overall weight of the speaker is too large, and the existing metal speaker cabinet structure is composed of two or more components. General bolt connection

Method used

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  • Magnesium alloy integrally cast sound box and manufacturing method thereof
  • Magnesium alloy integrally cast sound box and manufacturing method thereof
  • Magnesium alloy integrally cast sound box and manufacturing method thereof

Examples

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Embodiment 1

[0033] Refer to attached figure 1 , this example designs a kind of front panel wall, two side walls, the top wall are all curved surfaces, and the lower wall and the rear wall are plane magnesium alloy overall casting bookshelf sound box body. The cabinet is a double-frequency bookshelf speaker with curved side walls, and the thickness of each wall ranges from 5mm to 50mm. The thickness of the front panel wall is the largest, and the width and height of the front wall are greater than the width and height of the rear wall. frequency, the upper part is the hole for the high-frequency speaker, and the high-frequency speaker can use about 1 inch high-quality silk film, titanium metal film, or aluminum alloy thin ribbon tweeter; the middle part is the hole for the low-frequency speaker, which can be used 5-inch to 10-inch high-quality mid-low frequency speakers; the lower part is a sonic inverter tube, and the length of the inverter tube is about 1 / 2 to 2 / 3 of the depth inside the...

Embodiment 2

[0035] refer to figure 2 , this example designs a kind of front panel wall, two side walls, top wall and rear wall all are curved surface, and the lower wall is the magnesium alloy overall casting sound box body of plane. The speaker body adopts a circular arc transition design from top to bottom according to the size of the speaker. The speaker is three-way, the upper part is the tweeter, the middle part is the mid-range speaker, and the lower part is the low-frequency speaker. The high-frequency speaker can use about 1 inch high-quality silk film, titanium alloy film, or aluminum alloy thin ribbon tweeter; the mid-frequency speaker can use a 5-inch to 10-inch speaker; the low-frequency speaker can use an 8-inch to 18 inch speaker, with 2 sound wave ports on both sides of the lower part. The wall thickness of each part ranges from 5mm to 100mm. Four inverted trapezoidal steps can be cast on the bottom surface of the speaker as speaker feet for contact with the ground. Su...

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Abstract

The invention relates to a magnesium alloy integrally cast sound box which comprises a sound box body (1), wherein, a high-frequency loudspeaker (10), a medium / low-frequency loudspeaker (11) and an electronic frequency divider (7) are installed in the sound box body (1), the sound box body (1) is connected with a wiring post (8) through a wire, and a sound absorption layer (9) is arranged on the inner wall of the sound box body (1). The sound box body (1) is a magnesium alloy integrally cast structure, and a high-frequency loudspeaker hole (3) is arranged at the upper part of the sound box body (1); a medium / low-frequency loudspeaker hole is arranged at the middle part of the sound box body (1); and a sound-wave reversed phase hole (5) is arranged at the lower part of the sound box body (1). The manufacturing method comprises the following steps: the magnesium alloy is melted in a smelting furnace in the air or under the protective atmosphere, and the casting core can adopt a wooden core, metal core, and the like, by various molding and casting processes such as sand casting, metal mold casting, and the like; the magnesium alloy adopted in the method comprises the following component of Mg-X alloy, wherein, X can be an element such as Ni, Zr, Al, Cu, and the like, and one or more of the elements can be adopted to be combined with Mg to form binary, ternary or polynary magnesium alloy; and the sound box is characterized in that the seamless sound box body can be conveniently in any shape and complex structure. The invention has the advantages of simple structural process, low manufacturing cost and good tone color.

Description

Technical field: [0001] The invention relates to a sound box, in particular to a magnesium alloy integral casting sound box and a manufacturing method thereof, belonging to components of audio equipment. Background technique: [0002] For a long time, the material used for the speaker body has been mainly wood and its products. The wood can be directly made into a board or made of sawdust and bonded into a board, that is, medium fiber board (MDF). Wood products have the advantages of high strength, light weight, and good resonance. Therefore, high-end speakers made of high-quality wood have excellent sound quality and are expensive. With the advancement of material technology, materials such as plastics and metals are gradually used in the manufacture of speaker bodies. [0003] High-end speakers have high requirements on acoustic characteristics, so people use various means to improve sound quality. For example, try to reduce resonance and standing waves, control the phas...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04R27/00H04R1/00H04R31/00C22C23/00B22D21/04
Inventor 王继杰武保林赵玉华沙桂英国旭明王洪顺刘春忠刘腾姜妲
Owner SHENYANG AEROSPACE UNIVERSITY
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