CN2829266Y

CN2829266Y - Horn magnetoaero-loop structure

Info

Publication number: CN2829266Y
Application number: CN 200520103892
Authority: CN
Inventors: 黄嘉波
Original assignee: Individual
Current assignee: Individual
Priority date: 2005-08-17
Filing date: 2005-08-17
Publication date: 2006-10-18
Anticipated expiration: 2015-08-17

Abstract

The utility model provides a horn magnetic circuit structure which comprises a washer, a magnet, a dustproof screen, an annular iron core and a yoke iron, wherein a bottom edge groove of the bottom surface of the annular iron core can combine with a copper ring, the magnet is positioned above the annular iron core, the upper part of the magnet combines with the washer and the outer edge position of the upper surface of the washer is machined and provided with an upper annular edge groove which is sheathed with a copper ring. Because of the application of the double-copper ring structure, the utility model can obviously improve the second harmonic distortion. The frequency response curve is more stable. The utility model can shield the magnetic field loss in the aspect of sound quality and decrease the inductance quantity of a voice coil.

Description

Loudspeaker magnetism loop structure

Technical field

The utility model relates to a kind of loudspeaker magnetism loop structure, specifically relates to a kind of structure that promotes alt tonequality and can obviously improve second harmonic distortion.

Background technology

At present, the structure of general loudspeaker is for comprising two kinds of internal magnetization and external magnetic types, wherein with the horn structure (seeing also shown in Figure 1) of external magnetic type, its include by copper ring 1 ', washer 2 ', magnet 3 ', and T sections 4 ' constitute, and this kind external magnetic type magnetism loop structure is when actual act, electric current can cause that the action of voice coil loudspeaker voice coil causes that also the electric current of opposite drive current direction is electronic simultaneously, and the electromotive force that this electric current flows can produce in voice coil loudspeaker voice coil and follows the AC magnetic field that drive current produced in voice coil loudspeaker voice coil originally, thereby can cause the modulating action of gap magnetic field, because can cause second harmonic distortion; And the method that will solve this twice harmonic distortion is to use the eddy current of a copper ring 1 ' produced as the offset magnetic field modulation.

Yet practise have structure only T sections 4 ' above be provided with a copper ring 1 ', because of this copper ring 1 ' close voice coil loudspeaker voice coil, so this copper ring 1 ' can be presented on saturation condition always, the result can cause small modulating action, so still can't improve the lifting of second harmonic distortion and tonequality.Improve owing to use the double copper ring horn structure of this high precision, more smooth aspect frequency response curve, also owing to improve the result who uses, aspect acoustical testing, because more can cover the magnetic field loss, and the inductance value that reduces voice coil loudspeaker voice coil, more effective for the lifting of alt tonequality.Therefore then need further improvement for existing structure.

Summary of the invention

The purpose of this utility model is in view of above-mentioned habit the existing shortcoming of structure to be arranged, improved loudspeaker magnetism loop structure, having a talk about particularly provides a kind of application highly purified pair of copper metal structure, and in the magnetism loop configuration of loudspeaker the upper and lower copper ring of all using, can improve second harmonic distortion really.

The purpose of this utility model realizes by following technical proposals, loudspeaker magnetism loop structure provided by the utility model, and it is the internal magnetic type magnetic air circuit, it includes washer, magnet, Air Filter, ring-like iron core, yoke and two copper rings; It is characterized in that: the root edge groove of the bottom surface of described ring-like iron core can supply in conjunction with a copper ring, and then there is magnet the position above ring-like iron core, this magnet top and recombinant one washer, and this washer upper surface outer rim place has ring edge groove on for processing, to be nested with a copper ring.

According to another way of the present utility model, provided by the utility model kind of loudspeaker magnetism loop structure, it is external magnetic type magnetism loop, it includes washer, magnet, base plate, conducting magnetic column and two copper rings; It is characterized in that: described base plate central authorities connect a conducting magnetic column, and this conducting magnetic column has upper groove and root edge groove up and down, can be in upper groove for copper coin is set, and the root edge groove can supply the winding copper ring.

Further specify content of the present utility model, feature and effect by the following examples and in conjunction with the accompanying drawings, make it possible to the utility model had further be well understood to.

Description of drawings

Fig. 1 has external magnetic type horn structure cutaway view for practising;

Fig. 2 is a stereo appearance figure of the present utility model;

Fig. 3 is a three-dimensional exploded view of the present utility model;

Fig. 4 is the utility model combining structure cutaway view;

Fig. 5 is the external magnetic type loudspeaker combining structure cutaway view of another embodiment.

Description of reference numerals: copper ring 1; Base plate 7; Washer 2; Copper coin 8; Last ring edge groove 21; Conducting magnetic column 9; Magnet 3; Upper groove 91; Air Filter 4: root edge groove 92; Ring-like unshakable in one's determination 5; Copper ring 1 '; Ring edge groove 51; Washer 2 '; Root edge groove 52; Magnet 3 '; Yoke 6; T sections 4 '.

Embodiment

Please join Fig. 2 to shown in Figure 4, it is an embodiment of the present utility model, wherein be disclosed as a kind of internal magnetization horn structure, it includes two copper rings 1, washer 2, magnet 3, Air Filter 4, ring-like unshakable in one's determination 5 and yoke 6, wherein yoke 6 can be used as and strengthens magnetic-force density and prevent the leakage field phenomenon, in yoke 6 for being equipped with ring-like unshakable in one's determination 5, Air Filter 4, magnet 3 and washer 2 in regular turn; This ring-like unshakable in one's determination 5 is made of the good Ru Tie magnet of magnetic conductivity, ring-like unshakable in one's determination 5 upper surface center periphery is provided with ring edge groove 51, can be for the different Air Filter of several pieces mesh size 4 is set, the root edge groove 52 of ring-like 5 bottom surfaces unshakable in one's determination can supply in conjunction with a copper ring 1, then there is magnet 3 position above ring-like unshakable in one's determination 5, these magnet 3 tops and recombinant one washer 2, these washer 2 upper surface outer rim places are provided with being nested with a copper ring 1 for processing has ring edge groove 21 on.And between yoke 6 and ring-like unshakable in one's determination 5, adopt with the locking combine, remaining washer 2, magnet 3 and ring-like unshakable in one's determination 5 composition surface are all fixed with special glue.

Because two copper rings 1 at this internal magnetization horn structure, be to use highly purified copper metal to make with the CNC processing mode of precision, and the washer 2 that cooperates with copper ring 1 and ring-like unshakable in one's determination 5 also passes through accurate processing, by two copper rings 1 are set in the loudspeaker, the magnetic conduction effect can be disperseed, and second harmonic distortion can be obviously improved.

See also shown in Figure 5 again, unique kind of external magnetic type horn structure in the diagram, it is to be provided with magnet 3 and washer 2 on a base plate 7, connect a conducting magnetic column 9 by base plate 7 central authorities, this conducting magnetic column 9 has upper groove 91 and root edge groove 92 up and down, can be in upper groove 91 for copper coin 8 is set, root edge groove 92 can supply winding copper ring 1; Also adopt double copper ring formula structure by the external magnetic type loudspeaker, can solve the problem of second harmonic distortion equally.

In sum, use the double copper ring structure according to the utility model, through experiment and the actual proof of using, really can be more steady on frequency response curve; Aspect acoustical testing, can have and respectively cover the magnetic field loss, and reduce the inductance value of voice coil loudspeaker voice coil.

The above, it only is preferred embodiment of the present utility model, when not limiting the scope that the utility model is implemented with this, promptly all equivalences of doing according to the utility model claim and creation description change and modify, and all should still belong in the scope that the utility model patent contains.

Claims

1. loudspeaker magnetism loop structure, it is the internal magnetic type magnetic air circuit, it includes washer, magnet, Air Filter, ring-like iron core, yoke and two copper rings; It is characterized in that: the root edge groove of the bottom surface of described ring-like iron core can supply in conjunction with a copper ring, and then there is magnet the position above ring-like iron core, this magnet top and recombinant one washer, and this washer upper surface outer rim place has ring edge groove on for processing, to be nested with a copper ring.

2. loudspeaker magnetism loop structure, it is external magnetic type magnetism loop, it includes washer, magnet, base plate, conducting magnetic column and two copper rings; It is characterized in that: described base plate central authorities connect a conducting magnetic column, and this conducting magnetic column has upper groove and root edge groove up and down, can be in upper groove for copper coin is set, and the root edge groove can supply the winding copper ring.