CN201690587U - Tuner for adjusting sound compliance and mini speaker having tuner - Google Patents

Abstract

The utility model provides a tuner for adjusting sound compliance and a mini speaker having the tuner. The tuner is made of a solid so as to selectively plug an air hole to adjust sound compliance. The mini speaker comprises a frame having a plurality of air holes, a diaphragm adhered with a sound coil, a magnetic circuit and a tuner, wherein the diaphragm is coupled to the upper side of the frame, the magnetic circuit provided with a magnet, a magnet yoke and a flat board is coupled to the lower side of the frame, and the tuner selectively plugs the air hole of the frame so as to adjust sound compliance.

Description

Adjust the tuner of sound compliance and have the Microspeaker of this tuner

Technical field

The utility model is about Microspeaker, and more particularly, by the formed tuner of solid, it adjusts the sound compliance by clogging formation by the pore of the rear surface of framework, and the Microspeaker with this tuner about a kind of.

Background technology

In general, Microspeaker comprises magnetic circuits, its by magnet, yoke and on sound coil, produce excitatory power upper plate, be used to produce the barrier film of acoustic pressure, and the framework that is used for fixing these assemblies defines.This sound coil moves backward according to reaching forward along its electric current that flows, and this barrier film moves by moving of this sound coil, and the vibration according to air produces sound by this.

The sound compliance that needs to adjust this Microspeaker is arranged, to satisfy the demand of this cover group manufacturer according to pattern, pattern or the installation environment of the electronic installation that uses these Microspeakers.Therefore, when this cover group manufacturer designed a novel type, this Microspeaker must redesign and make, to satisfy the sound compliance that is suitable for this novel type.This can increase development cost and required time.

Simultaneously; Korea S's acoustics periodical (Korean Acoustic Journal) the 23rd volume the 3rd phase one piece of article of 115 to 122 pages " Microspeaker and the analysis of catheter type horn system Relations Among with rear surface pore " (Analysis ofrelationship between a micro-speaker having rear surface air holes and a ducttype speaker system) has disclosed when these pores that provide at the rear surface of this Microspeaker framework are provided one by one and has studied its sound property, notices that by this this sound compliance changes according to the variation of the entire area of these pores of this Microspeaker.

Based on above research, in correlation technique, use netting twine or adhesive-bonded fabric to adjust this sound compliance.But,, be difficult to reach uniform density if use adhesive-bonded fabric.If the use netting twine, this sound property changes according to the leakage efficiency in the outside of these pores.Moreover because the direction of these pores is defined in this place, rear surface, the space availability ratio of this rear surface volume is lowered in some devices.

The utility model content

Therefore, the utility model is about a kind of tuner that is used to adjust the sound compliance, and has the Microspeaker of this tuner, and it can alleviate substantially because the restriction of correlation technique and one or more problems that shortcoming causes.

The utility model one purpose is to provide a kind of tuner, and it can adjust the needed sound compliance of cover group manufacturer apace by the area of adjusting the rear surface pore, and does not need to change frame structure, and the Microspeaker with this tuner is provided.

Another purpose of the utility model is to provide a kind of tuner, and it can adjust the sound compliance by the direction that changes the rear surface pore simply, and the Microspeaker with this tuner.

Additional advantage of the present utility model, purpose and feature will partly propose in the following description, and other parts can be understood more after inspecting following content for the present technique professional person or can be by learning in the middle of the enforcement of the present utility model.These purposes of the present utility model and other advantage can be by explanation that is disclosed and claims thereof, and in the accompanying drawing the specific structure that indicates understand and obtain.

In order to reach these purposes and other advantage and according to the purpose of the utility model, so the place is concrete implements and the broad sense expositor, a kind of tuner that is used to adjust the sound compliance of Microspeaker is provided, it comprises the framework with several pores, wherein this tuner is formed by solid, to adjust this sound compliance by optionally clogging these pores.

In order to reach these purposes and other advantage, and according to the purpose of the utility model, so the place is concrete implements and the generalized description person, and a kind of Microspeaker is provided, and comprising: framework, and it has several pores; Barrier film, it coheres sound coil, and it is coupled in the upper side of this framework; Magnetic circuits, it has magnet, yoke and flat board, and is coupled in the lower side of this framework; And tuner, to adjust the sound compliance, this tuner is formed by solid by the pore that optionally clogs this framework for it.

This solid can be formed by a kind of material that rubber, plastics, metal, porous material are for example selected in sponge, the group that constitutes.This solid can be has the cell cube that at least two connectors stop up these pores individually.This tuner can be designed on this framework or under the position clog these pores.

Can recognize aforementioned is exemplary and illustrative for general remark of the present utility model and following detailed description, and the further explanation as the utility model of being advocated will be provided.

Description of drawings

Accompanying drawing is to comprise to provide for the utility model further to understand, and is used to add and constitute the some of the application's case, and accompanying drawing is the expression specific embodiment of the utility model, cooperates its explanation to can be used for explaining the principle of the utility model.

Brief Description Of Drawings is as follows:

Fig. 1 is the schematic diagram according to the idea of the sound compliance that is used to adjust loudspeaker in the utility model specific embodiment 1;

Fig. 2 A to Fig. 2 C is the schematic diagram of adjusting according to the pore of afterframe in the specific embodiment;

Fig. 3 is the decomposition diagram of the Microspeaker of the tuner of application one specific embodiment;

Fig. 4 is the part cross-sectional perspective view of the Microspeaker sub-assembly of the tuner of application one specific embodiment;

Fig. 5 is the schematic diagram according to the idea of the sound compliance that is used to adjust loudspeaker in the utility model second specific embodiment;

Fig. 6 A to Fig. 6 D is the schematic diagram according to the example of specific embodiment 1 and specific embodiment 2 corrections;

Fig. 7 is the schematic diagram according to the idea of the sound compliance that is used to adjust loudspeaker in the utility model specific embodiment 3.

Embodiment

To carry out detailed reference to the preferred embodiment of the utility model now, its example all is illustrated in the accompanying drawing.

Specific embodiment 1

Figure 1 and Figure 2 is the schematic diagram of the idea of the sound compliance that is used to adjust loudspeaker according to the utility model first specific embodiment.

As shown in Figure 1, in this specific embodiment, the sound compliance clogs pore 22 by the connector 12 that uses the tuner 10 that is formed by solid, and the mode that changes atmospheric density or volume of air with the open area that changes the pore 22 that forms on the framework 20 of Microspeaker adjusts.In general, when this sound compliance was processed into a low frequency block model of certain sound field, according to the idea corresponding to the compliance of electronic circuit, this sound compliance directly was subjected to the influence of the volume of this sound field.That is to say that this sound compliance can be represented by following formula 1.

[formula 1]

$C_{\mathrm{AS}}=\frac{V_{\mathrm{AS}}}{{\mathrm{\ρS}}^2}$

C wherein _ASBe the formula volume of these loudspeaker, ρ is an atmospheric density, and s is a velocity of sound.

For a kind of typical loudspeaker, because the rear surface of barrier film can not sealed fully, this volume is defined as the inner space of the box body that these loudspeaker are installed.But for this Microspeaker, this rear surface is a complete closed, and has several pores.Therefore, the structure on surface is influential for the sound property of this Microspeaker after this Microspeaker.For example, when clogging these pores by the connector 12 that uses tuner 10 and form the open area of these pores by framework 20, the atmospheric density of this inner space and equal volume can be changed by the vibration of this barrier film, so this sound compliance C promptly can change.

Fig. 2 A is depicted as the state that all pore 22-1 all open to 22-6 when not using tuner.Fig. 2 B is depicted as two pore 22-3 and 22-4 is closed by the tuner 10 with two connectors 12, and four pore 22-1 are the state of opening to 22-6.Fig. 2 C be depicted as all pore 22-1 to 22-6 all by connector 12 closing state of tuner 10.

As mentioned above, according to this specific embodiment, the tuner 10 with connector 12 designs in response to the demand of this cover group manufacturer, and the basic configuration of this Microspeaker does not change.Then, this sound compliance can use the connector 12 of tuner 10 to adjust.Therefore, this Microspeaker can be applied to plants different patterns more than the electronic installation, so the modal shift of this electronic installation can realize apace in response to these demands.

Fig. 3 is the decomposition diagram of Microspeaker of having used the tuner of this specific embodiment, and Fig. 4 is the part cross-sectional perspective view of the Microspeaker sub-assembly of the tuner of using this specific embodiment.

As shown in Figures 3 and 4, the Microspeaker 100 of a specific embodiment comprises screen work 102, barrier film 104, sound coil 106, tuner 10, and it has connector 12 and is used to clog pore 22, flat board 108, magnet 110 and yoke 112.

Please refer to Fig. 3 and Fig. 4, yoke 112, magnet 110 and dull and stereotyped 108 are coupled in the central portion of framework 20, to define magnetic circuits.Sound coil 106 is bonded in the lower surface of barrier film 104, and is arranged on when barrier film 104 is coupled in framework 20 between yoke 112 and dull and stereotyped 108.The pore 22 of framework 20 is designed to adjust by the connector 12 that uses tuner 10 clogs this sound compliance.For this purpose, the number of the connector 12 of tuner 10 can be one or be same as the number of pore 22.

In above-mentioned specific embodiment 1, tuner 10 is designed to the position on framework 20, clogs pore 22 with downward direction.But the utility model is not limited to this.For example, this tuner can be designed to the position under framework 20, clogs pore 22 with the direction that makes progress.In the example that revises, connector 22 can individually separate and individually clog pore 22 with up or down direction, and adjusts this sound compliance by this.

Specific embodiment 2

Fig. 5 is the schematic diagram according to the idea of the sound compliance that is used to adjust loudspeaker in the utility model specific embodiment 2.

As shown in Figure 5, in this specific embodiment, the sound compliance clogs pore 22 by the connector 12 that uses the tuner 10 that is formed by solid, changes volume adjustment with the open area that changes the pore 22 that forms on the framework 20 of Microspeaker.In this specific embodiment 2, tuner 10 is designed to clog pore 22, and its state is that its position is on surface under the framework 20.In this example, after combination in advance, the pore 20 of framework 20 is plugged at the connector 12 of the tuner 10 of outside by the position, to adjust by this needed sound compliance of cover group manufacturer in several these Microspeakers.

Adjust the specific embodiment of revising

Fig. 6 A and Fig. 6 D are depicted as the example of the correction of specific embodiment 1 and specific embodiment 2.In Fig. 6 A, the connector 12-1 that is used to clog pore 22 to 12-5 for individually separating.In Fig. 6 B, the connector 12 that separates is forced to be installed to these pores with downward direction.In Fig. 6 C, the connector 12 that separates is with upward to being forced to be installed to these pores.In Fig. 6 B, because this pore is plugged in the inboard, this is filled in and must carry out when this Microspeaker of combination.In Fig. 6 C, because these pores are plugged in the outside.Fig. 6 D be depicted as by adjustment clog pore 22 connector 12 ' thickness t and be defined in the example of the volume in the space of surface after this barrier film.

Specific embodiment 3

Fig. 7 is the schematic diagram according to the idea of the sound compliance that is used to adjust loudspeaker in the utility model specific embodiment 3.In this specific embodiment 3, use bellows to control Microspeaker space surface afterwards.

Please refer to Fig. 7, the bellows 200 with pore 202 is designed to cover the side surface or the lower surface of microphone combination part 100, and all pores 22 of its middle frame are all opened, and adjusts the sound compliance by the rear surface volume or the density of control Microspeaker by this.For example, form number or the area that passes through pore 202 on the lower surface of bellows 200 by adjusting, or change the size of bellows 200, this rear surface volume of this Microspeaker or atmospheric density can be changed adjusts this sound compliance.

According to these specific embodiments, this sound compliance can be adjusted by the rear surface pore that uses the solid that is formed by rubber, metal or polymer compound optionally to clog the framework of this Microspeaker.In addition, this sound compliance can be by changing material, density and the porousness of using porous material to make this solid or using by the formed tuner of solid according to equipment energy characteristic, and the volume that can adjust this rear surface pore simply adjusts.

Therefore, this sound property can only use assembly adjustment, and does not need to change the structure of this framework.Therefore, by adding by formed this tuner of this solid to identical product, this sound compliance can be done the adjustment of diversity ground.Even adopt the pattern of the electronic installation of these loudspeaker to change to some extent therefore.This sound compliance can utilize low cost to adjust simply in response to the demand of these devices.

Present technique professional person can recognize in the utility model can carry out multiple correction and variation.Therefore, the utility model is contained for the utility model in appended claim and be equal to correction and variation within the category.

[primary clustering symbol description]

10 tuners

12 connectors

12-1～12-5 connector

12 ' connector

20 frameworks

22 pores

22-1～22-6 pore

100 Microspeakers

100 microphone combination parts

102 screen works

104 barrier films

106 sound coils

108 flat boards

110 magnet

112 yokes

200 bellows

202 pores

Claims (7)

1. a tuner that is used to adjust the sound compliance of the Microspeaker that comprises the framework with several pores is characterized in that wherein this tuner is formed by solid, can adjust this sound compliance by optionally stopping up pore.

2. tuner as claimed in claim 1 is characterized in that, the material that wherein forms this solid is to be selected from rubber, plastics, metal, sponge, the porous material any.

3. as claim 1 and 2 described tuners, it is characterized in that wherein this solid is to have the cell cube that at least two connectors individually clog this pore.

4. Microspeaker comprises:

Framework, it has several pores;

Barrier film, it coheres sound coil, and it is coupled in the upper side of this framework;

Magnetic circuits, it has magnet, yoke and flat board, and is coupled in the lower side of this framework; And

Tuner can be adjusted the sound compliance by the pore that optionally clogs this framework, and this tuner is formed by solid.

5. Microspeaker as claimed in claim 4 is characterized in that, the material that wherein forms this solid can be selected from any in rubber, plastics, metal, sponge, the porous material.

6. Microspeaker as claimed in claim 4 is characterized in that, wherein this solid can be and has the cell cube that at least two connectors individually clog this pore.

7. Microspeaker as claimed in claim 4 is characterized in that, wherein this tuner be designed on this framework or under the position clog this pore.

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