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
CN101754073AInactive Publication Date: 2010-06-23GUANGZHOU WINSOUND INFORMATION TECH CO LTD
1 Cites 6 Cited by

Patent Information

Authority / Receiving Office
CN ยท China
Patent Type
Applications(China)
Current Assignee / Owner
GUANGZHOU WINSOUND INFORMATION TECH CO LTD
Publication Date
2010-06-23
Estimated Expiration
Not applicable ยท inactive patent

Smart Images

  • Figure 1
    Figure 1
  • Figure 2
    Figure 2
  • Figure 3
    Figure 3
Patent Text Reader

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.
Need to check novelty before this filing date? Find Prior Art

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

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More