No-diaphragm portable full range speaker of same-phase radiation

A loudspeaker and co-phase technology, applied in the field of loudspeakers, can solve the problems of enlargement, high price, and restrictions on the development of high-power loudspeakers, and achieve the effects of simple manufacture, wide frequency response range, and non-directional sound

Inactive Publication Date: 2010-06-23
GUANGZHOU WINSOUND INFORMATION TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

But this kind of strong magnetic material is expensive, especially with the increase of driving power, the cost price doubles, which seriously restricts the development of high-power speakers.

Method used

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  • No-diaphragm portable full range speaker of same-phase radiation
  • No-diaphragm portable full range speaker of same-phase radiation
  • No-diaphragm portable full range speaker of same-phase radiation

Examples

Experimental program
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Effect test

Embodiment Construction

[0027] Such as figure 1 Shown: a portable full-band loudspeaker with same-phase radiation without a diaphragm, the loudspeaker contains a magnetic circuit system composed of an upper magnet 6 , a magnetic guide sheet 8 , a lower magnet 9 , and a U-shaped iron sheet 10 . Wherein 9 is fixed on 8 bottom with glue and is fixed in 10 inside with glue, and the surface of 8 and 10 is on the same horizontal plane, and 6 is fixed on 8 top with glue. The loudspeaker also includes a vibration transmission system composed of a vibration transmission piece 2 with rivets, an upper centering support piece 3 , a lower centering support piece 4 and a rivet 5 . 3 of which have structures such as figure 2 As shown, 3 and 4 are riveted together with 5 to form a centering strut, and then 2 are riveted together to form a vibration transmission system. Bracket 12 is connected to 3 through screw 11, one end of voice coil 7 is inserted into 4 and glued tightly, the other end of 7 is embedded in th...

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Abstract

The invention provides a no-diaphragm portable full range speaker of same-phase radiation, which provides a novel train of thought for the design of a portable audio device. The speaker mainly comprises a magnetic circuit system, a voice coil and a vibration transmission system, wherein the magnetic circuit system is in a conventional internal magnetic type magnetic circuit structure; and the vibration transmission system consists of a metal spider with large elastic modulus and a vibration transmission piece. After passing through an alternating audio signal, the voice coil is affected by electromagnetic force in a magnetic field to do alternating motion and push the vibration transmission system to vibrate; and when being attached to the surface of a hard medium, the vibration transmission system transmits the vibration information to the hard medium so as to generate irregular vibration on the surface of the hard medium and radiate voice. The invention overcomes the defects that a conventional electrodynamic type cone speaker has reverse-phase radiation voice at a low frequency range and a flat panel speaker needs a large diaphragm, and solves the problem that a magnetostriction type speaker has low efficiency-cost ratio, and the generated sound wave has no directivity, wide frequency response range and low distortion.

Description

Technical field [0001] The present invention relates to the field of loudspeakers, and more particularly, the present invention relates to loudspeakers for portable devices such as notebook computers or mini stereos. The loudspeaker belongs to a new type of loudspeaker that does not need a cabinet and has no fixed vibration plate. Background technique [0002] At present, portable devices such as notebooks have built-in speakers, but limited by the size of the portable devices, small traditional electric cone speakers are generally used. Due to the small diameter of this small cone speaker, the resonant frequency f 0 Higher, so that the low-frequency components cannot be well extended downward when playing music, and it is difficult to meet the user's listening requirements. [0003] In 1996, the British company Verity launched a flat-panel speaker called NXT. Unlike traditional speakers that produce piston-type vibrations, the NXT flat-panel speaker produces sound through...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04R9/02H04R9/06
Inventor 邓清桃邓玉柱李锦辉
Owner GUANGZHOU WINSOUND INFORMATION TECH CO LTD
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