CN202121768U

CN202121768U - Thin type loudspeaker

Info

Publication number: CN202121768U
Application number: CN 201020701214
Authority: CN
Inventors: 陈得喜
Original assignee: ZHONGSHAN MG AUDIO DEVELOPMENT Co Ltd; Wuzhou Hengsheng Electronic Technology Co Ltd; Guoguang Electric Co Ltd
Current assignee: GUANGDONG MEIJIA AUDIO DEVELOPMENT CO., LTD.
Priority date: 2010-12-31
Filing date: 2010-12-31
Publication date: 2012-01-18
Anticipated expiration: 2020-12-31

Abstract

A thin type loudspeaker includes a basin rack, a sound basin set fixedly on the basin rack, an U-shaped iron, magnetic steel arranged in the U-shaped iron, an up magnetic conductive plate arranged on the magnetic steel, a sound ring with one end extending into the U-shaped iron being sleeved in the magnetic steel and a centering support sheet bonded on the sound ring. The upper end surface of the U-shaped iron is provided with a gap upward; the inner diameter D of the centering support sheet is larger than the external diameter d of the U-shaped iron; the inner end of the centering support sheet is extended to be provided with a protrude portion; the protrude portion is corresponding to the gap on the U-shaped iron; and the protrude portion passes through the gap to be fixed with the sound ring. The height of the loudspeaker is obviously lower than a common loudspeaker, which is good for the thin type development of a loudspeaker; the arrangement of the U-shaped iron gap is good for the heat radiation of the sound ring; the design is good for the loudspeaker performance, and the Qt value of the loudspeaker is reduced; and the centering moment is larger, which is good for enhancing the voice coil motion stability when the horn is in work.

Description

A kind of Thin-shaped speaker

Technical field

The utility model relates to loud speaker, and especially thin type HI-FI uses woofer.

Background technology

Development of science and technology makes digital electronic goods constantly towards the light and thin type development, and in the digital electronic goods of boombox, loud speaker also must require to do than just meeting the demands with thinner in the past.Existing Thin-shaped speaker generally comprises the basin frame, be fixed on sound basin group, U-iron on the basin frame, be located at magnet steel in the U-iron, be located at upper conduction magnetic board on the magnet steel, be inserted in the magnet steel and an end stretches into voice coil loudspeaker voice coil in the U-iron, is bonded at the centring disk on the voice coil loudspeaker voice coil; Centring disk is arranged on the top of U-iron; Because voice coil loudspeaker voice coil can be with centring disk to move together when up-down vibration; So need leave certain distance between the upper surface of centring disk and U-iron, make the centring disk vibration time be unlikely to touch U-iron and the frequency characteristic that changes loud speaker.The amplitude of stroke and sound basin group is one of key factor of decision loud speaker thickness.

Summary of the invention

The utility model technical problem to be solved provides a kind of Thin-shaped speaker, has eliminated the stroke height between original centring disk and the U-iron, makes loud speaker become thinner.

For solving the problems of the technologies described above; The technical scheme of the utility model is: a kind of Thin-shaped speaker; Comprise the basin frame, be fixed on sound basin group, U-iron on the basin frame, be located at magnet steel in the U-iron, be located at upper conduction magnetic board on the magnet steel, be inserted in the magnet steel and an end stretches into voice coil loudspeaker voice coil in the U-iron, is bonded at the centring disk on the voice coil loudspeaker voice coil; Said U-iron upper surface is provided with more than one breach, and the inside diameter D of said centring disk is greater than the U-iron outside diameter d, and inner extension of said centring disk is provided with more than one protuberance; Said protuberance is corresponding with breach on the said U-iron, and protuberance passes breach and contacts with voice coil loudspeaker voice coil.Loud speaker is when vibration; Centring disk passes the gap position of U-iron, has utilized the height of breach, makes the oscillation space of loud speaker be improved; Loud speaker can have bigger amplitude in identical space, thereby the tonequality of loud speaker is significantly improved.Heat during voice coil loudspeaker voice coil work can better come out from breach, thereby the power that helps loud speaker improves.Compare with open magnetic circuit loudspeaker, the magnetic flux of the magnetic circuit of the utility model is significantly improved, and magnetic flux increases 1 times approximately; Compare the magnetic basically identical with common magnetic path, can reduce the Qt value of loud speaker, thereby help the performance design of loud speaker, also help the Hi-Fiization development of Thin-shaped speaker.Centring disk can be bonded at the bottom of voice coil loudspeaker voice coil; Be on the line face of voice coil loudspeaker voice coil; And the centring disk of ventional loudspeakers can only be bonded at more than the voice coil line face, and the bonding position of centring disk has determined the size of centering moment, and the centering power of nearlyer voice coil loudspeaker voice coil is just big more from the voice coil loudspeaker voice coil bottom; It is more little to that is to say that the power that voice coil loudspeaker voice coil is swung just needs, the stability of voice coil loudspeaker voice coil motion when helping increasing loudspeaker work.

As improvement, said U-iron is provided with four equally distributed breach, and said centring disk the inner is provided with four protuberances corresponding with said breach.

As improvement, said notch depth is h1, and deciding core, to prop up the depth capacity that sheet when motion insert U-iron be h2, and the height of U-iron is h3, h2＜h1≤h3.

As improvement, said notch geometry is the fan annular, and said protuberance shape is agreed with said notch geometry mutually.

The beneficial effect that the utility model is compared with prior art brought is:

1. loud speaker aspect ratio ventional loudspeakers has had tangible reduction, helps the thin type development of loud speaker;

2. compare with ventional loudspeakers, the stroke of the utility model has had tangible increase under identical height situation;

3.U the breach of shape iron is provided with the heat radiation that is beneficial to voice coil loudspeaker voice coil;

4. compare with exploitation formula magnetic circuit loudspeaker, the magnetic flux of the magnetic circuit of the utility model is significantly improved, and magnetic flux increases 1 times approximately; Compare the magnetic basically identical with common magnetic path, thereby help the performance design of loud speaker, can reduce the Qt value of loud speaker, also help the Hi-Fiization development of Thin-shaped speaker;

5. centering moment becomes big, the stability of voice coil loudspeaker voice coil motion when helping increasing loudspeaker work.

Description of drawings

Fig. 1 is the utility model cutaway view.

Fig. 2 is the U-iron vertical view.

Fig. 3 is the U-iron perspective view.

Fig. 4 is centering support vertical view.

Embodiment

Below in conjunction with Figure of description the utility model is described further.

As shown in Figure 1; A kind of Thin-shaped speaker comprises basin frame 1, is fixed on sound basin group 2, U-iron 6 on the basin frame 1, is located at magnet steel 7 in the U-iron 6, is located at upper conduction magnetic board 4 on the magnet steel 7, is inserted in the magnet steel 7 and an end stretches into voice coil loudspeaker voice coil 3 in the U-iron 6, is bonded at the centring disk 5 on the voice coil loudspeaker voice coil 3.Like Fig. 2, shown in 3, said U-iron 6 upper surfaces are provided with four breach 61, and the quantity of breach 61 can be provided with according to the size of loud speaker, and loud speaker is big more, and needed breach 61 quantity are many more, and are instead then few more.Said breach 61 is evenly distributed on the same circumference, differs 90 ° between the adjacent breach 61; Said breach 61 degree of depth are h1, and deciding core, to prop up the depth capacity that sheet when motion insert U-iron 6 be h2, and the height of U-iron 6 is h3, h2＜h1≤h3, and in the present embodiment, said breach 61 degree of depth h1 equal the height sum of magnet steel 7 and upper conduction magnetic board 4; Said breach 61 shapes are the fan annular.As shown in Figure 4; The inside diameter D of said centring disk 5 is greater than U-iron 6 outside diameter d; Said centring disk 5 the inners are provided with four protuberances 51 corresponding with said breach 61; The shape of said protuberance 51 is agreed with said breach 61 shapes mutually, makes centring disk 5 can be inserted in U-iron 6, and protuberance 51 passes breach 61 and contacts with said voice coil loudspeaker voice coil 3.

Loud speaker is when vibration; Centring disk 5 passes breach 61 positions of U-iron 6, has utilized the height of breach 61, makes the oscillation space of loud speaker be improved; Loud speaker can have bigger amplitude in identical space, thereby the tonequality of loud speaker is significantly improved.Heat during voice coil loudspeaker voice coil 3 work can better come out from breach 61, thereby the power that helps loud speaker improves.Compare with exploitation formula magnetic circuit loudspeaker, the magnetic flux of the magnetic circuit of the utility model is significantly improved, and magnetic flux increases 1 times approximately; Compare the magnetic basically identical with common magnetic path, thereby help the performance design of loud speaker, can reduce the Qt value of loud speaker, also help the Hi-Fiization development of Thin-shaped speaker.Centring disk 5 can be bonded at the bottom of voice coil loudspeaker voice coil 3; Be on the line face of voice coil loudspeaker voice coil 3; And the centring disk 5 of ventional loudspeakers can only be bonded at more than the voice coil loudspeaker voice coil 3 line faces, and the bonding position of centring disk 5 has determined the size of centering moment, and is just big more from the centering power of the nearlyer voice coil loudspeaker voice coil 3 in voice coil loudspeaker voice coil 3 bottoms; It is more little to that is to say that the power that voice coil loudspeaker voice coil 3 is swung just needs, the stability of voice coil loudspeaker voice coil 3 motions when helping increasing loudspeaker work.

Claims

1. Thin-shaped speaker; Comprise the basin frame, be fixed on sound basin group, U-iron on the basin frame, be located at magnet steel in the U-iron, be located at upper conduction magnetic board on the magnet steel, be inserted in the magnet steel and an end stretches into voice coil loudspeaker voice coil in the U-iron, is bonded at the centring disk on the voice coil loudspeaker voice coil; It is characterized in that: said U-iron upper surface is provided with more than one breach; The inside diameter D of said centring disk is greater than the U-iron outside diameter d; The inner extension of said centring disk is provided with more than one protuberance, and said protuberance is corresponding with breach on the said U-iron, and protuberance passes breach and said voice coil loudspeaker voice coil is fixed.

2. a kind of Thin-shaped speaker according to claim 1 is characterized in that: said U-iron is provided with four equally distributed breach, and said centring disk the inner is provided with four protuberances corresponding with said breach.

3. a kind of Thin-shaped speaker according to claim 1 is characterized in that: said notch depth is h1, decides core and props up sheet motion to insert the depth capacity of U-iron be h2, and the height of U-iron is h3, h2＜h1≤h3.

4. a kind of Thin-shaped speaker according to claim 1 is characterized in that: said notch geometry is the fan annular, and said protuberance shape is agreed with said notch geometry mutually.