CN2387687Y

CN2387687Y - Ball top high pitch horn coaxial all-band loudspeaker

Info

Publication number: CN2387687Y
Application number: CN 99231131
Authority: CN
Inventors: 刘建国
Original assignee: 刘建国
Current assignee: CHENGDU GAOLANG SPEAKERS ELECTRONIC CO., LTD.
Priority date: 1999-03-16
Filing date: 1999-03-16
Publication date: 2000-07-12
Anticipated expiration: 2009-03-16

Abstract

The utility model relates to a ball top high pitch horn sound reinforcement coaxial all-band loudspeaker which comprises a low-frequency sounding unit which is composed of a T-shaped iron, a big magnetic steel, a bass coil, a paper cone, etc. The central position of the bottom of the T-shaped iron core column is provided with a half aperture in which a small magnetic steel is arranged according to the coaxial position of the paper cone. The outer end face of the small magnetic steel is provided with a magnetic conducting plate which is coaxial to the small magnetic steel, the high tone coil fixedly connected with a high tone diaphragm is sheathed on the magnetic conducting plate, and the high and the bass sounding units are arranged coaxially according to the same acoustics axial line. The utility model has the advantages of wide sounding band, inphase communication of the high and the low frequency sound waves, small distortion, high ability of analysis and good frequency response effect.

Description

Ball is risen the coaxial full frequency speaker of sound bugle public address

The utility model relates to electro-acoustic element, especially loud speaker, is that full range band permanent magnet loudspeaker is made the field specifically.

Loud speaker is a kind of audio electrical signal to be become the converter of sound because the audition scope of people's ear reaches 20HZ-18KHZ, so to the requirement of high-fidelity loudspeaker exactly can be in this frequency range frequency response curve smooth and distortion is very little sounds.But ventional loudspeakers is owing to limit by structure, single loud speaker can only be in a band frequency sounding, so normal tweeter and the woofer of adopting divided the work the method for sounding on an audio amplifier.General tweeter overabsorption is at 3KHZ-20KHZ frequency range sounding, and woofer is served as the sounding of 20HZ-3KHZ more, and the required signal of telecommunication of each loud speaker is distributed by frequency divider.But the result of making makes basic wave and the high order harmonic component of same voice signal when reduction is emitted send from diverse location respectively like this, at this moment because of the combination loudspeaker range difference sound phase deviation has appearred, thereby generation phase distortion, influence definition, location sense and the parsing power of sound, made the sound-reducing deleterious.Existing woofer mainly constitutes magnetic circuit system by fixing big magnet steel on the T sections, and the bass coil snare that is fixedly connected with cone constitutes the vibration sounding system on the stem stem of T sections.Its frequency band range is only within 20HZ-3KHZ.

The purpose of this utility model is to overcome above weak point and provides a kind of ball to rise the coaxial full frequency speaker of sound bugle public address, and it integrates high frequency phonation unit and low frequency phonation unit, has wideer sounding frequency band and better frequency response effect.

The purpose of this utility model is realized by the following technical programs:

A kind of ball is risen the coaxial full frequency speaker of sound bugle public address, comprise the T sections, big magnet steel, the bass coil of snare on T sections stem stem and the cone that connects firmly mutually with low circle, this T sections stem stem bottom centre position offers half hole, little magnet steel is according to being arranged in this half hole with the coaxial position of described cone, and the outer face of little magnet steel is provided with coaxial with it magnetic conductive board, and the high pitch coil turn that is fixedly connected with tweeters diaphragms is enclosed within on the magnetic conductive board.

Based on technique scheme, promptly at existing woofer (by the T sections, big magnet steel, the bass coil, compositions such as cone) the high frequency phonation unit that is provided with coaxial with it (being that high pitch and bass phonation unit are installed on same the sound wave emission axis) on the basis is (mainly by little magnet steel, magnetic conductive board, tweeters diaphragms and high pitch coil are formed), owing to have height concurrently, low frequency phonation unit and comparing with single existing loud speaker, had wideer sounding frequency band, simultaneously because high, the coaxial setting of low frequency phonation unit and eliminated existing height, the split of low frequency phonation unit is provided with formed height, low-frequency sound wave propagation time difference and the problem of dtmf distortion DTMF that brings, thus high, synchronous (homophase) of low-frequency sound wave propagated and made that to the utlity model has distortion little, parsing power height, the advantage that frequency response is effective.

Below in conjunction with accompanying drawing the utility model is described in detail.

Fig. 1 is the profile of an embodiment of the present utility model;

Fig. 2 is the profile of another embodiment of the present utility model.

Among Fig. 1, the vibrational system of bass part: cone 7, bass coil 10, locating branch slice 11, and basin frame 6; Magnetic circuit system: T sections 3, big magnet steel 4 and clamping plate 5.More than constitute external magnetic type bass phonation unit; The vibrational system of high pitch part: high pitch assembly 8 (comprising tweeters diaphragms and high pitch coil); Magnetic circuit system: little magnet steel 1, the stem stem of magnetic conductive board 2 and T sections 3.T sections 3 stem stem diameters suitably strengthen in the above-mentioned bass magnetic circuit system, and its core is installed powerful little magnet steel 1 of rare earth and magnetic conductive board 2, has formed internal magnetization high pitch magnetic circuit thus.Above-mentioned ball is risen sound assembly 8 and is located and interaction by correct with internal magnetization high pitch magnetic circuit, vibration sounding, by bugle public address tube 9 outside public address, the parameter of curve of bugle public address tube 9 endoporus has guaranteed directive property, frequency response effect and the acoustics coupling of high pitch through correct selected.T sections 3 stem stems increase than general T sections diameter, its stem stem bottom centre position offers half hole, little magnet steel 1 is according to being arranged in this half hole with the coaxial position of cone, the outer face of little magnet steel is provided with coaxial with it magnetic conductive board 2, and the high pitch coil turn that is fixedly connected with tweeters diaphragms is enclosed within on the magnetic conductive board.The material of big magnet steel 4 is a permanent-magnet ferrite, and little magnet steel 1 is the powerful magnet steel of rare earth, and it is produced assembly technology and produces identical with conventional loud speaker.The stem stem of the bore of bass coil 10 and T sections 3 matches, and can select by series commonly used, and the bore of high pitch assembly is also elected regular size as.Bass coil 10, locating branch slice 11, cone 7 are each other and fully identical with conventional loudspeaker unit production technology with the technique for sticking of basin frame 6, require to cooperate installation between bugle public address tube 9 and high pitch assembly 8, the T sections 3, and keep appropriate gap with bass coil 10, bugle public address tube 9 can be with plastics or aluminum alloy materials manufacturing, as adopt the aluminium alloy manufacturing can strengthen the thermolysis of bass coil 10, reduce thermal fatigue, increase the useful life of loud speaker.Ball can be risen phoneme and put reach, bugle public address tube suitably shortens or evagination, and high pitch and bass can be in same acoustics plane, realizes coaxial concurrent sounding substantially.

Cone 7 bores of above-mentioned bass part vibrational system can be from the 130-300 millimeter, and Hz-KHz is from 20HZ-4KHZ.

Above-mentioned high pitch part assembly 8 vibrating diaphragm bores can be from the 12-28 millimeter, and Hz-KHz is from 2KHZ-20KHZ.

Fig. 2 is a kind of thin type structure of the present utility model, and its principal character adopts lenticular structure for the bass cone, bigger minimizing the total height of loud speaker, make it can be applied to automobile audio and slim audio amplifier.

The utility model is rational in infrastructure, and manufacturing process is simple, favorable expandability, and every technical indicator of loud speaker all can reach the related standards of high-fidelity loudspeaker.

Claims

1. a ball is risen the coaxial full frequency speaker of sound bugle public address, comprise the T sections, big magnet steel, the bass coil of snare on T sections stem stem and the cone that connects firmly mutually with the bass coil, it is characterized in that, described T sections (3) stem stem bottom centre position offers half hole, little magnet steel (1) is according to being arranged in this half hole with the coaxial position of described cone (7), the outer face of little magnet steel (1) is provided with coaxial with it magnetic conductive board (2), and the high pitch coil turn that is fixedly connected with tweeters diaphragms is enclosed within on the magnetic conductive board (2).

2. full frequency speaker according to claim 1 is characterized in that, the annular space position between described tweeters diaphragms and the bass coil is provided with bugle public address tube (9).