CN202077175U

CN202077175U - Speaker

Info

Publication number: CN202077175U
Application number: CN2011200801302U
Authority: CN
Inventors: 黄拓腾
Original assignee: Individual
Current assignee: Huang Tuoteng; JIEYINTE TECHNOLOGY CORP
Priority date: 2011-03-24
Filing date: 2011-03-24
Publication date: 2011-12-14
Anticipated expiration: 2021-03-24

Abstract

The utility model relates to a speaker, which comprises a flat yoke plate, an inner magnet, a first magnetically conductive disk, an outer magnet, a second magnetically conductive disk, a diaphragm and a voice coil. The inner magnet and the outer magnet are separately borne on the flat yoke plate. The first magnetically conductive disk is borne on the top of the inner magnet, the second magnetically conductive disk is borne on the top of the outer magnet, and the circumferential edges of the first magnetically conductive disk and the second magnetically conductive disk are separated from each other to define a gap. The voice coil is connected with the diaphragm, and is axially extended into the gap. Consequently, the magnetic lines of force in the speaker become more orderly and concentrated, so that the driving efficiency of the voice coil can be increased, and the utility model is particularly applicable to microspeaker products.

Description

Loud speaker

Technical field

The utility model is about a kind of loadspeaker structure, refers to a kind of double-magnetic loadspeaker structure that drives efficient that improves especially.

Background technology

With reference to Figure 1A, be a kind of known loudspeaker structure cutaway view.Loud speaker among the figure mainly includes a yoke 81, a magnet 82, magnetic conductive disk 83, a voice coil loudspeaker voice coil 84 and a vibrating diaphragm 85.Yoke 81 is a cup-like structure, comprises a horizontal part 811 and a vertical component effect 812 that goes out from the vertical projection of horizontal part 811 outer rims.Cylindric magnet 82 bottoms are carried on the surface of horizontal part 811, and magnetic conductive disk 83 is then being carried at magnet 82 tops.

The vertical component effect 812 of above-mentioned yoke 81 extends axially to corresponding with magnetic conductive disk 83, and in the footpath upwards separately.Voice coil loudspeaker voice coil 84 1 ends are connected in vibrating diaphragm 85, and the other end extends between vertical component effect 812 and the magnetic conductive disk 83.Because magnet 82 two ends have opposite polarity, make that with the magnetic conductive disk 83 of its top contact and the yoke 81 that contacts with its bottom also be to sense opposite polarity.

Loud speaker is generation one induced field that makes by 84 power supplies to voice coil loudspeaker voice coil, and coil 84 causes between the magnetic field at magnetic conductive disk 83 and yoke 81, and the attraction in induced field and magnetic field or repulsive interaction make vibrating diaphragm 85 vibration soundings.

With reference to figure 2A, be another kind of known loudspeaker structure cutaway view.Loud speaker among the figure mainly includes a yoke 91, a magnet 92, magnetic conductive disk 93, a voice coil loudspeaker voice coil 94 and a vibrating diaphragm 95.The yoke 91 of this kind loud speaker comprises a horizontal part 911 and the vertically extending vertical component effect 912 that makes progress from horizontal part 911 equally.Magnet 92 is loop configuration, and its bottom is carried on the surface of horizontal part 911, and magnetic conductive disk 93 is then being carried at magnet 92 tops.

The vertical component effect 912 of above-mentioned yoke 91 extends axially to corresponding with magnetic conductive disk 93, and in the footpath upwards separately.Voice coil loudspeaker voice coil 94 1 ends are connected in vibrating diaphragm 95, and the other end extends between vertical component effect 912 and the magnetic conductive disk 93.Its sounding principle is same as Figure 1A, repeats no more in this.

Above-mentioned any known loudspeaker structure all has a shortcoming, i.e. the distribution of the magnetic line of force between magnetic conductive disk and yoke is situation comparatively at random because the structure of yoke is essential.Just constitute L shaped structure, point to whole section vertical component effect, many ratio magnetic lines of force are arranged and can't pass through voice coil loudspeaker voice coil, shown in Figure 1B and Fig. 2 B from the part magnetic line of force of magnetic conductive disk because of horizontal part and vertical component effect.Owing to the frequency range that dissimilar music are required is distributed more widely, the above-mentioned magnetic line of force not concentration problem causes the primary sound ability of reappearing to limit to some extent.

The utility model content

The purpose of this utility model is, a kind of loud speaker is provided, and its inner magnet line of force becomes more neat and concentrates, the improved efficiency that voice coil loudspeaker voice coil is driven.

Loud speaker of the present utility model comprises: a yoke flat board; One internal magnet is carried on this yoke flat board; One first magnetic conductive disk is carried on this internal magnet top; One external magnet is carried on this yoke flat board, and with this internal magnet separately; One second magnetic conductive disk is carried on this external magnet top, and this first magnetic conductive disk periphery and this second magnetic conductive disk periphery define a gap separately; One vibrating diaphragm; And a voice coil loudspeaker voice coil, be connected in this vibrating diaphragm, and extend axially into this gap.

Also include an outer shell base and an earmuff, this outer shell base and this earmuff define a receiving space, and this yoke flat board, this internal magnet, this first magnetic conductive disk, this external magnet, this second magnetic conductive disk, this vibrating diaphragm and this voice coil loudspeaker voice coil are contained in this receiving space.

Wherein, this loud speaker is a supra-aural earphone.

Wherein, this loud speaker is a headphone.

Above-mentioned first magnetic conductive disk is carried on the internal magnet top, and second magnetic conductive disk then is carried on the external magnet top.

The beneficial effects of the utility model are: by above-mentioned loadspeaker structure, among the scope (gaps between two magnetic conductive disks) that the device inner magnet line of force more fitly concentrates on and the voice coil loudspeaker voice coil motion vertical intersects, the magnetic field energy of major part is used for driving.The utility model particularly suitable is on products such as Microspeaker such as earphone, because the driving energy effective utilization allows the vibrating diaphragm of miniature area can produce the amplitude of vibration that promotes a large amount of air, the weight sense of bass is increased, and the fineness of enhancing high pitch, the dynamic enjoyment scope of lifting music.

Description of drawings

For being illustrated more clearly in the utility model, enumerate below that preferred embodiment and conjunction with figs. describe in detail as after, wherein:

Figure 1A is a known loudspeaker structure division cutaway view.

Figure 1B is Figure 1A partial enlarged drawing.

Fig. 2 A is another kind of known loudspeaker structure division cutaway view.

Fig. 2 B is Fig. 2 A partial enlarged drawing.

Fig. 3 is the supra-aural earphone exploded view of the utility model first preferred embodiment.

Fig. 4 is the monomer segment exploded view of raising one's voice of the utility model first preferred embodiment.

Fig. 5 is the monomer segment cutaway view of raising one's voice of the utility model first preferred embodiment.

Fig. 6 is the headphone stereogram of the utility model second preferred embodiment.

Embodiment

The inner magnet line of force is dispersed the problem of waste when operating in order to improve loud speaker, the utility model proposes a kind of loadspeaker structure with magnetic line of force localization effects, no longer adopt the known L shaped yoke structure of the long vertical component effect of tool, cooperate and increase by one group of magnet-magnetic conductive disk and make up and make the centralization of the inner magnet line of force but use plate shaped yoke instead.

With reference to figure 3, be the supra-aural earphone exploded view of first preferred embodiment.Be the loud speaker of example with an earphone shown in the figure, particularly a kind of supra-aural earphone, it mainly includes an outer shell base 21, an earmuff 22, raise one's voice a monomer 10 and a signal input line 23.Earmuff 22 defines a receiving space S1 in conjunction with being fixed in outer shell base 21 and surrounding jointly, and the monomer 10 of raising one's voice is configured among the receiving space S1.Signal input line 23 penetrates outer shell base 21 and electrically connects with the monomer 10 of raising one's voice.

With reference to figure 4 and Fig. 5, be raise one's voice the monomer segment exploded view and the cutaway view of first preferred embodiment.The above-mentioned monomer 10 of raising one's voice includes a yoke flat board 11, an internal magnet 12, one first magnetic conductive disk 13, an external magnet 14, one second magnetic conductive disk 15 and a vibrating diaphragm 16.Be the internal magnet 12 of a column structure and the external magnet 14 of a ring bodies and all fixedly be carried on the loading end 111 of yoke flat board 11, and annular external magnet 14 is at intervals round internal magnet 12 with the bottom.

Aforementionedly be the first discoideus magnetic conductive disk 13 and be fixed on internal magnet 12 tops, its path length is greater than internal magnet 12.Second magnetic conductive disk 15 includes one a glass of bottom 151 and a margin of optic cup portion 152 that is inclined upwardly and extends from cup bottom 151 outer rims, and a hole 153 is offered in central authorities in cup bottom 151.Second magnetic conductive disk 15 is to be fixed on external magnet 14 tops with its glass bottom 151, and first magnetic conductive disk, 13 at least one parts are configured in the hole 153, forms two magnetic

conductive disks

13,15 in axially going up the state that overlaps.In addition, first magnetic conductive disk, 13 outer peripheral edges and second magnetic conductive disk, 15 inner peripherals define the clearance t of annular in radially separating.

Vibrating diaphragm 16 opens in two magnetic conductive disks, 13,15 tops, and is fixed on the margin of optic cup portion 152 of second magnetic conductive disk 15 with side.Voice coil loudspeaker voice coil 17 1 ends of ring-type are connected to vibrating diaphragm 16 near on the surface of magnetic conductive disk, and the other end then extends axially into clearance t.

Internal magnet 12 need meet with the ornaments of external magnet 14: make corresponding magnetic

conductive disk

13,15 induce dissimilar polarities.For example, internal magnet 12 makes first magnetic conductive disk 13 be sensed as the N utmost point, and then external magnet 14 makes second magnetic conductive disk 15 be sensed as the S utmost point.

By above-mentioned two magnet loadspeaker structure designs, the magnetic line of force between first magnetic conductive part and second magnetic conductive part distributes as shown in the figure, point to another magnetic conductive disk periphery from the periphery of a magnetic conductive disk, present rather the state of concentrating, do not have known as the magnetic line of force disperse and be distributed to whole yoke vertical component effect and cause and drive efficient and reduce.When being applied in thin type table upper speaker or earphone, the utility model can represent its excellent effect especially.

With reference to figure 6, be the headphone stereogram of second preferred embodiment.The main explanation of this example monomer structure of raising one's voice of the present utility model also can be applied to a headphone, and it comprises an outer shell base 31, raise one's voice a monomer 30 and an earmuff 32, and monomer 30 structures of wherein raising one's voice are routine identical with first, repeat no more, and earmuff 32 is the moccasin material.The monomer 30 of raising one's voice of this example is configured in outer shell base 31 equally and surrounds in the middle of the receiving space S2 that defines with earmuff 32.

The foregoing description only is to give an example for convenience of description, and the interest field that the utility model is advocated should be as the criterion so that the claim scope is described certainly, but not only limits to the foregoing description.

Claims

1. a loud speaker is characterized in that, comprising:

One yoke flat board;

One internal magnet is carried on this yoke flat board;

One first magnetic conductive disk is carried on this internal magnet top;

One external magnet is carried on this yoke flat board, and with this internal magnet separately;

One second magnetic conductive disk is carried on this external magnet top, and this first magnetic conductive disk periphery and this second magnetic conductive disk periphery define a gap separately;

One vibrating diaphragm; And

One voice coil loudspeaker voice coil is connected in this vibrating diaphragm, and extends axially into this gap.

2. loud speaker as claimed in claim 1, it is characterized in that, also include an outer shell base and an earmuff, this outer shell base and this earmuff define a receiving space, and this yoke flat board, this internal magnet, this first magnetic conductive disk, this external magnet, this second magnetic conductive disk, this vibrating diaphragm and this voice coil loudspeaker voice coil are contained in this receiving space.

3. loud speaker as claimed in claim 1 is characterized in that, wherein, this loud speaker is a supra-aural earphone.

4. loud speaker as claimed in claim 1 is characterized in that, wherein, this loud speaker is a headphone.