CN208174991U - Conductive magnetic yoke and loudspeaker - Google Patents

Abstract

The utility model discloses a kind of conductive magnetic yoke, which includes conductive magnetic yoke ontology, and the conductive magnetic yoke ontology, which includes at least, a radiator structure, and the radiator structure is that the conductive magnetic yoke ontology inner surface is recessed several recessed portions of formation outward.The conductive magnetic yoke has high heat dissipation area and good heat dissipation performance, stability in use when in use, so that the stability in use comprising its loudspeaker is higher.The invention also discloses the loudspeakers comprising the conductive magnetic yoke.

Description

Conductive magnetic yoke and loudspeaker

Technical field

The utility model relates to electroacoustic switch technology fields.More particularly, to a kind of conductive magnetic yoke and loudspeaker.

Background technique

As the volume of the electronic products such as mobile phone constantly reduces, shape tends to be lightening, to being mounted in electronic product Higher requirements are also raised for structure and performance of loudspeaker etc..

Loudspeaker belongs to most basic phonation unit, widely answers as the device that can convert electrical energy into sound energy For in the terminal devices such as mobile phone.Loudspeaker includes shell, vibrational system and magnetic circuit system, and vibrational system includes vibrating diaphragm and sound Circle, magnetic circuit system includes the magnet and magnetic yoke to form magnetic gap.With the continuous reduction of loudspeaker design size, amplitude requirement It continues to increase, causes to radiate in such narrow space difficult, so that loudspeaker stability is poor.

Accordingly, it is desirable to provide a kind of new conductive magnetic yoke, to solve above-mentioned technical problem.

Utility model content

First of the utility model is designed to provide a kind of conductive magnetic yoke.

Second of the utility model is designed to provide a kind of loudspeaker.

In order to achieve the above first purpose, the utility model adopts the following technical solutions：

A kind of conductive magnetic yoke, including conductive magnetic yoke ontology, the conductive magnetic yoke ontology, which includes at least, radiator structure, the heat dissipation knot Structure is that the conductive magnetic yoke ontology inner surface is recessed several recessed portions of formation outward.

Preferably, the conductive magnetic yoke ontology includes the bottom wall being arranged in horizontal direction and the certainly separate bottom wall edge side To the side wall extended to form, several recessed portions are formed on the inner surface of the bottom wall and/or are formed in the interior of the side wall On side surface.

Preferably, the recessed portion forms fenestral fabric on conductive magnetic yoke ontology inner surface.

Preferably, the conductive magnetic yoke further includes the heat-conducting layer being set on the conductive magnetic yoke ontology inner surface, and is covered entirely In the conductive magnetic yoke ontology inner surface.

Preferably, the heat-conducting layer is by coating, pasting or be plated on the inner surface of the conductive magnetic yoke ontology.

Preferably, the conductive magnetic yoke ontology includes the bottom wall being arranged in horizontal direction and prolongs upwards from the bottom wall edge The side wall to be formed is stretched, the heat-conducting layer is covered in the inner surface of the bottom wall and/or the side wall.

Preferably, the heat-conducting layer is graphene layer or copper foil.

To reach above-mentioned second purpose, the utility model provides a kind of loudspeaker, and the loudspeaker includes as above first Conductive magnetic yoke described in a purpose.

The beneficial effects of the utility model are as follows：

A purpose according to the present utility model, in conductive magnetic yoke technical solution provided by the utility model, conductive magnetic yoke sheet Body, which includes at least, a radiator structure, and the radiator structure is that conductive magnetic yoke ontology inner surface is recessed several recess of formation outward Portion increases the heat dissipation area of the conductive magnetic yoke when in use, while graphene is the splendid heat sink material of performance, and the two is combined with Effect solves the loudspeaker mould group heat dissipation problem in small space, improves its heat dissipation performance, improves its stability in use, So that the stability in use comprising its loudspeaker is higher.In addition, another purpose according to the present utility model, the utility model A kind of loudspeaker including above-mentioned conductive magnetic yoke is also provided, with the conductive magnetic yoke compared with the existing technology possessed by advantage phase Together, details are not described herein.

Detailed description of the invention

Specific embodiment of the present utility model is described in further detail with reference to the accompanying drawing.

Fig. 1 shows the conductive magnetic yoke structural schematic diagram in the utility model one embodiment.

Fig. 2 shows the loadspeaker structure schematic diagrames in the utility model one embodiment.

Specific embodiment

In order to illustrate more clearly of the utility model, the utility model is done into one below with reference to preferred embodiments and drawings The explanation of step.Similar component is indicated in attached drawing with identical appended drawing reference.It will be appreciated by those skilled in the art that below Specifically described content is illustrative and be not restrictive, and should not be limited the protection scope of the present invention.

There is heat dissipation difficulty in use to improve loudspeaker, especially small size loudspeaker, stability difference Problem, as shown in Figure 1, one embodiment of the utility model provides a kind of conductive magnetic yoke, the conductive magnetic yoke 1 includes conductive magnetic yoke sheet Body, the conductive magnetic yoke ontology, which includes at least, radiator structure, and the radiator structure is that the conductive magnetic yoke ontology inner surface is outside Be recessed several recessed portions 13 formed.

In the present embodiment, the magnetic conduction is not only increased by the presence of several recessed portions 13 on conductive magnetic yoke ontology inner surface The area of yoke ontology inner surface, also makes its structure more stable, thus radiating surface when increasing its use of very high degree Product preferably improves the loudspeaker mould group heat dissipation problem in small space, improves acoustic stability.It is recessed in the present embodiment The distance between the size of concave portion, shape, each recessed portion, the arrangement mode of several recessed portions etc., these do not become limitation The factor of technical solutions of the utility model can be needed according to technology come any adjustment.In a preferable example, recessed portion is equal Even is distributed in the conductive magnetic yoke ontology inner surface.At this point, the stabilization of the conductive magnetic yoke performance can be further ensured that.Preferably at one In example, the concave face of the recessed portion 13 is in have in arcuation face or in the sunk area of spherical disc or recessed portion The channel form structure of flat face.In one more preferably example, the recessed portion 13 shape on conductive magnetic yoke ontology inner surface At fenestral fabric.At this point, heat dissipation effect and holding acoustic stability better effect.

In a preferable example, the conductive magnetic yoke ontology includes the bottom wall 11 being arranged in horizontal direction and from the bottom 11 edge of wall upwardly extends the side wall 12 to be formed, and several recessed portions 13 are formed on the inner surface of the bottom wall 11 and/or shape On the inner surface of side wall 12 described in Cheng Yu.Under these conditions, its heat dissipation performance can be improved well.

In order to further preferably solve the heat dissipation problem of the loudspeaker mould group in small space, improves acoustics and stablize Property, in another preferable example, the conductive magnetic yoke 1 further include be set to it is thermally conductive on the conductive magnetic yoke ontology inner surface Layer.The presence of heat-conducting layer can further export the heat generated in 1 use process of conductive magnetic yoke, while not influence its acoustics also Performance.

Wherein, the material of heat-conducting layer is preferably the preferable material of thermal conductivity, such as graphene, copper foil, preferably graphene, Not only thermal conductivity is good for graphene, but also intensity is high, has good toughness, and stable structure ensure that this is led while heat dissipation The stability of magnetic yoke structure.

In the present embodiment, the mode being incorporated on the inner surface of conductive magnetic yoke ontology to heat-conducting layer is unlimited.Preferably at one In example, the heat-conducting layer is by coating, pasting or be plated on the inner surface of the conductive magnetic yoke ontology.Wherein, pass through electricity Heat-conducting layer is incorporated in by the mode of plating can be further improved the heat resistance of structure, increases firmly on the inner surface of conductive magnetic yoke ontology Degree.

Another embodiment of the utility model also provides a kind of loudspeaker, as shown in Fig. 2, the loudspeaker includes loudspeaker Shell 3, the magnetic circuit system being contained in the shell 3 and vibrational system, the magnetic circuit system include providing in above-described embodiment Conductive magnetic yoke 1.Wherein, the vibroseis includes vibrating diaphragm 5 and the voice coil 4 that is combined with the vibrating diaphragm 5；The magnetic circuit system further includes Centring magnet 2 positioned at 11 central location of bottom wall of the conductive magnetic yoke 1；Centring magnet 2 and the formation of the side wall 12 of the conductive magnetic yoke 1 Accommodate the magnetic gap of the voice coil 4.It should be understood by those skilled in the art that in practical applications, the magnetic circuit system can be used Single motor structure, three motor structures or five motor structures, the utility model is simultaneously without restriction, and loudspeaking Possessed advantage is identical compared with the existing technology with conductive magnetic yoke provided by the utility model for device, and details are not described herein.

Obviously, the above embodiments of the present invention is merely examples for clearly illustrating the present invention, and It is not limitations of the embodiments of the present invention, for those of ordinary skill in the art, in above description On the basis of can also make other variations or changes in different ways, all embodiments can not be exhaustive here, It is all to belong to obvious changes or variations that the technical solution of the utility model is extended out still in the utility model The column of protection scope.

Claims (8)

1. a kind of conductive magnetic yoke, including conductive magnetic yoke ontology, which is characterized in that the conductive magnetic yoke ontology, which includes at least, radiator structure, The radiator structure is that the conductive magnetic yoke ontology inner surface is recessed several recessed portions of formation outward.

2. conductive magnetic yoke according to claim 1, which is characterized in that the conductive magnetic yoke ontology includes being arranged in horizontal direction Bottom wall and the side wall extended to form from the separate bottom wall edge direction, several recessed portions are formed in the inside table of the bottom wall On face and/or it is formed on the inner surface of the side wall.

3. conductive magnetic yoke according to claim 1, which is characterized in that recessed portion shape on conductive magnetic yoke ontology inner surface At fenestral fabric.

4. conductive magnetic yoke according to claim 1, which is characterized in that the conductive magnetic yoke further includes being set to the conductive magnetic yoke sheet Heat-conducting layer on internal side surface, and it is overlying on the conductive magnetic yoke ontology inner surface entirely.

5. conductive magnetic yoke according to claim 4, which is characterized in that the heat-conducting layer is by coating, pasting or be plated on institute On the inner surface for stating conductive magnetic yoke ontology.

6. conductive magnetic yoke according to claim 4, which is characterized in that the conductive magnetic yoke ontology includes being arranged in horizontal direction Bottom wall and the side wall to be formed is upwardly extended from the bottom wall edge, the heat-conducting layer is covered in the bottom wall and/or the side The inner surface of wall.

7. according to the described in any item conductive magnetic yokes of claim 4-6, which is characterized in that the heat-conducting layer is graphene layer or copper Foil.

8. a kind of loudspeaker, which is characterized in that the loudspeaker includes such as the described in any item loudspeaker magnetic conductions of claim 1-7 Yoke.