CN102026070A

CN102026070A - Multifunctional micro speaker

Info

Publication number: CN102026070A
Application number: CN2010101152982A
Authority: CN
Inventors: 李相镐; 权哲荣; 张弘圭
Original assignee: BSE Co Ltd
Current assignee: BSE Co Ltd
Priority date: 2009-09-11
Filing date: 2010-01-27
Publication date: 2011-04-20
Also published as: KR20110027996A; TWM384483U; TW201110718A; WO2011030968A1; CN201608887U; KR101057077B1

Abstract

The present invention relates to a multifunctional micro speaker. The multifunctional micro speaker of the prevent invention comprises: a frame; a vibration plate including an outer circumference fixed to the frame; a voice coil fixed to a lower surface of the vibration plate; a first suspension which includes an outer circumference fixed to the frame and has elasticity; a yoke which is fixed to the first suspension and includes a bottom portion and a sidewall portion; a first permanent magnet fixed to the bottom portion; a plate fixed on an upper surface of the first permanent magnet; and a first stopper which is separately arranged from the sidewall portion to prevent the leaning bias of the yoke.

Description

Multifunctional micro speaker

Technical field

The present invention is about multifunctional micro speaker, and more particularly, about a kind of multifunctional micro speaker, its structure with improvement is controlled the yoke, magnet of the magnetic circuits that constitutes this multifunctional micro speaker and dull and stereotyped is displaced sideways displacement.

Background technology

In general, loudspeaker become the equipment of voice signal for the conversion electric signal.Microspeaker is a compact horn, is mainly used in the portable type audio unit, for example mobile phone, mobile computer, MP3 player, earphone etc.

In recent years electronic product adopts this Microspeaker person, mobile communication terminal for example, and mobile phone for example, it comprises the device that is used to produce vibration signal.This vibration signal can replace the arrival signal sound as a kind of signal, or confirms the signal of input state in the Touch Screen method, wherein imports data and directly imports on screen.

A kind of multifunctional micro speaker of purpose of the present invention, represent a kind of have be used to the loudspeaker that produce the additional functionality of vibration signal and be used for sonorific basic function.This multifunctional micro speaker can have multiple title, for example multifunctional actuator or multifunction electronic sound transducer.

A kind of typical multifunctional micro speaker has a kind of structure, and wherein the vibrator that is supported by the flabellum spring resonates and produces vibration.At typical multifunctional micro speaker, sound coil is arranged on the barrier film that is referred to as oscillating plate towards magnetic circuits.Herein, when the electric current of voice signal is applied to this sound coil, promptly can output sound.On the other hand, when the electric current of vibration signal is applied to this sound coil, promptly produce vibration.

This typical multifunctional micro speaker is done explanation with reference to Fig. 1.Typical multifunctional micro speaker 100 comprises shell 110, is used for sonorific barrier film 101, sound coil 102, permanent magnet 104, and it is provided with the N utmost point respect to one another and the S utmost point, flat board 103, yoke 105, top suspension 107 and below suspension 108.Electric current is via lead a 114 and lead b 115 and put on sound coil 102.

The lower surface of barrier film 101 is fixed in the upper end of sound coil 102.This sound coil twines in vertical direction.Dull and stereotyped 103 are fixed in the upper surface of permanent magnet 104.Permanent magnet 104 cooperates flat board 103 and yoke 105 construction magnetic circuits, and while permanent magnet 104 construction vibrators.This vibrator can optionally comprise a weights.This vibrator is done resiliency supported by top suspension 107 and below suspension 108.

The running of multifunctional micro speaker 100 below will be described.When the electric current that is fit to sound is applied to sound coil 102 via lead a 114 and lead b 115, on sound coil 102, produce electromagnetic force.Therefore, barrier film 101 promptly vibrates and output sound.

That is to say, the N utmost point of magnetic line of force guiding permanent magnet 104 in regular turn via dull and stereotyped 103, sound coil 102 and yoke 105 towards the S of permanent magnet 104 utmost point, to form magnetic field.At this moment, when producing this electromagnetic force on sound coil 102, the electromagnetic force of sound coil 102 is carried out interaction with the magnetic flux that is produced by this magnetic circuits.Therefore, barrier film 101 vibrations of being fixed in sound coil 102 come as a loudspeaker output sound.

When the electric current that is suitable for vibrating (in general for low-frequency current) when being applied to sound coil 102, comprise permanent magnet 104, dull and stereotyped 103 and the vibrator of yoke 105 be vertical moving and produce vibration.

According to this typical multifunctional micro speaker, because the assembly that constitutes this magnetic circuits is as this vibrator, the mobile meeting of this vibrator is disturbed with the mobile phase of this barrier film.Therefore, owing to the Lorentz force that reaction caused (Lorentz force) that flow to the electric current of this magnetic field line M and sound coil 102 acts on a plurality of directions, and cause the non-perpendicular vibration of sound coil 102.In a certain example, it is limited in sound coil 102 can collide dull and stereotyped 103 or yoke 105 and cause their damage.

Simultaneously, in this typical multifunctional micro speaker, yoke 105 is owing to an external impact relies on a side, and compression sound coil 102 causes the damage of sound coil 102 by this.As shown in Figure 6, comprise in the typical multifunctional micro speaker with the suspension that is similar to structure of the present invention a kind of, when yoke 105 relies on a side owing to this external impact, the top suspension 107 that is fixed in yoke 105 can be pushed into a side with below suspension 108, and causing serious damage, the slotted hole that wherein is defined in suspension 107 and 108 is pulled bad.

Summary of the invention

Therefore, the present invention is about a kind of multifunctional micro speaker, and it can alleviate in fact because the restriction of correlation technique and one or more problems that shortcoming causes.

The present invention's one purpose is to provide a kind of multifunctional micro speaker, its may command yoke, magnet and dull and stereotyped be displaced sideways displacement.

Additional advantage of the present invention, purpose and feature will partly propose in the following description, and other partly 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 invention.These purposes of the present invention 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 purpose of the present invention, so the place is concrete implements and the generalized description person, and a kind of multifunctional micro speaker is provided, and it comprises: framework; Barrier film, its outer periphery is fixed in this framework; Sound coil, it is fixed in the lower surface of this barrier film; First suspension, its outer periphery is fixed in this framework, and this first suspension has elasticity; Yoke, it is fixed in this first suspension, and this yoke has lower surface and sidewall; First permanent magnet, it is fixed in this lower surface of this yoke; Flat board, it is fixed in the upper surface of this first permanent magnet; And first stopper, it separates mutually with the sidewall of this yoke, relies on a side to prevent this yoke.

This first stopper can separate mutually with this first suspension.

This first stopper can be outstanding by the inner peripheral of this framework.

This yoke can be fixed in the upper surface of this first suspension.

This multifunctional micro speaker can comprise second stopper that separates mutually with this first stopper in addition, and wherein this first suspension can be arranged between this first stopper and this second stopper.

This second stopper can be outstanding by this inner peripheral of this framework.

This multifunctional micro speaker can comprise the hub part in addition, and its central portion from this first suspension projects upwards, and the yoke receiving slit that wherein is coupled in the hub part of this first suspension can be defined in this yoke.

This multifunctional micro speaker can comprise in addition: the yoke receiver hole, and it is by the central portion of this yoke; The permanent magnet receiver hole, it is by the central portion of this first permanent magnet; The board joint batter, it is by this dull and stereotyped central portion; And hub part, its central portion from this first suspension projects upwards, wherein this yoke receiver hole, this permanent magnet receiver hole, and this board joint batter can communicate with each other, and the upper end of this hub part can be arranged on towards the position of the inner peripheral of this yoke receiver hole at least.

At least partly the bent bending part that provides of the upper end of the hub part of this first suspension.

This multifunctional micro speaker can comprise in addition: second suspension, and wherein its outer periphery is fixed in this framework, and this second suspension with this first suspension mutually separates downwards, and have elasticity; And second magnet, it is fixed in this second suspension, and this second magnet separates mutually with this first suspension and this yoke, and is fixed thereon.

This multifunctional micro speaker can comprise the 3rd stopper in addition, and it separates mutually with an outer periphery of this second magnet, and outstanding by an inner peripheral of this framework.

In the another kind of aspect of the present invention, a kind of multifunctional micro speaker is provided, it comprises: framework; Barrier film, its outer periphery is fixed in this framework; Sound coil, it is fixed in the lower surface of this barrier film; First suspension, its outer periphery is fixed in this framework, reaches first through hole and is defined in its central portion, and this first suspension has elasticity; Yoke, it is fixed in the upper surface of this first suspension; First permanent magnet, it is fixed in the lower surface of this yoke; Flat board, it is fixed in the upper surface of this first permanent magnet; And the 4th stopper, its lower surface from this framework is outstanding, and is inserted into this first through hole, and the 4th stopper separates mutually with the inner peripheral of this first through hole.

Can be arranged on this first suspension from the hub part that this first through hole projects upwards, the yoke receiving slit that is coupled in this hub part of this first suspension is defined in this yoke, and the upper end of the 4th stopper can be towards the inner peripheral of this first through hole.

This multifunctional micro speaker can comprise in addition: the yoke receiver hole, and it is by the central portion of this yoke; The permanent magnet receiver hole, it is by the central portion of this first permanent magnet; The board joint batter, it is by this dull and stereotyped central portion; And the hub part, it projects upwards from this first through hole, wherein this yoke receiver hole, this permanent magnet receiver hole, and this board joint batter can communicate with each other, and the upper end of this hub part can be arranged on towards the position of the inner peripheral of this yoke receiver hole at least.

This multifunctional micro speaker can comprise in addition: second suspension, and its outer periphery is fixed in this framework, and the 4th stopper is by wherein, and this second suspension with this first suspension mutually separates downwards, and have elasticity; And second magnet, it is fixed in the lower surface of this second suspension, wherein the second magnet receiver hole of the 4th stopper by wherein can be defined in the central portion of this second magnet, and the 4th stopper can separate mutually with the inner peripheral of this second magnet receiver hole.

This multifunctional micro speaker can comprise in addition the protuberance outstanding and that separate mutually with this second magnet of the outer periphery from the lower end of the 4th stopper.

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

Description of drawings

Accompanying drawing comprises to provide for the present invention further to be understood, and is used to add and constitute the some of the application's case, and accompanying drawing illustration specific embodiments of the invention cooperate its explanation to can be used for explaining principle of the present invention.In the middle of accompanying drawing:

Fig. 1 is the constructed profile of a typical multifunctional micro speaker;

Fig. 2 is the constructed profile of the multifunctional micro speaker of one specific embodiment according to the present invention;

Fig. 3 is the constructed profile of the multifunctional micro speaker of another specific embodiment according to the present invention;

Fig. 4 is the constructed profile of the multifunctional micro speaker of another specific embodiment according to the present invention;

Fig. 5 is the constructed profile of the multifunctional micro speaker of another specific embodiment according to the present invention; And

Fig. 6 is the schematic plan view of the suspension of Fig. 2.

Embodiment

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

The multifunctional micro speaker of one specific embodiment elaborates to Fig. 6 with reference to Fig. 2 according to the present invention.

Fig. 2 is the constructed profile of the multifunctional micro speaker of one specific embodiment according to the present invention.Fig. 3 is the constructed profile of the multifunctional micro speaker of another specific embodiment according to the present invention.Fig. 4 and Fig. 5 are the constructed profile of the multifunctional micro speaker of another specific embodiment according to the present invention.

Multifunctional micro speaker 1 according to this specific embodiment is mainly used in undersized device, for example mobile communication terminal and portable type multimedia player (PMP, Portable multimedia player).Multifunctional micro speaker 1 has the sound generating function, together with the vibration generation function of signal.

Please refer to Fig. 2, comprise framework 10, first stopper 100, the 4th stopper 140, barrier film 20, sound coil 30, first suspension 40, yoke 50, first permanent magnet 60, dull and stereotyped 70, second suspension 80 and second magnet 90 according to the multifunctional micro speaker 1 of this specific embodiment.

Framework 10 is formed by general plastic material, and defines the outward appearance of these loudspeaker.A plurality of assemblies are fixed in the inboard of framework 10.Framework 10 comprises upper frame 12, underframe 13 and lower surface lid member 11.Cap member 14 is coupled in the upper portion of upper frame 12.In this specific embodiment, generally speaking framework 10 is cylindrical shape.In another specific embodiment, framework 10 can have rectangle, circle or orbit-shaped in addition.Therefore, these intrawares can suitably be revised according to their shape.

The first and the

4th stopper

100 and 140 is arranged to adjust the displacement that is displaced sideways of yoke 50.

First stopper 100 and the sidewall 56 of yoke 50 preset distance of being separated by relies on a side to prevent yoke 50.In this specific embodiment, first stopper 100 is outstanding by the inner peripheral of framework 10.First stopper 100 when this yoke owing to the non-perpendicular vibration of barrier film 20 or the external impact that puts on these loudspeaker rely on left to or when relying on right, may command yoke 50 be displaced sideways displacement.The distance of being separated by between first stopper 100 and the sidewall 56 can be adjusted to control this and be displaced sideways displacement.

Simultaneously, first stopper 100 separates mutually with first suspension 40 in vertical direction.The distance that first stopper 100 and first suspension 40 are separated by can be adjusted to control the vertical amplitude of first suspension 40, makes this vertical amplitude can not surpass needed value.

The 4th stopper 140 is projected upwards by the central portion of lower surface lid member 11.Extend upward to the 4th stopper 140 plug-in types by second magnet receiver hole 92 of second magnet 90 and second through hole 82 of second suspension 80.Then, the 4th stopper 140 is inserted in first through hole 41 of first suspension 40.The 4th stopper 140 separates mutually with the inner peripheral of first through hole 41 and the inner peripheral of the second magnet receiver hole 92.In this specific embodiment, the upper end of the 4th stopper 140 is arranged to towards this inner peripheral of at least the first through hole 41.That is to say that the upper end of the 4th stopper 140 can extend upward in addition and towards yoke receiving slit 52.Therefore, the 4th stopper 140 can be controlled the displacement that is displaced sideways of first suspension 40 and yoke 50.

Simultaneously in this specific embodiment, be arranged on the outer periphery of the lower end of the 4th stopper 140 with the protuberance 141 that second magnet 90 separates mutually.In this specific embodiment, first through hole 41 has the internal diameter less than second through hole 82.The second magnet receiver hole 92 has the internal diameter roughly the same with second through hole 82.Therefore, the protuberance 141 of the 4th stopper 140 and second magnet 90 distance of being separated by can be adjusted to control the displacement that is displaced sideways of second magnet 90 and second suspension 80.

The outer periphery of barrier film 20 is fixed in the upper portion of upper frame 12.Barrier film 20 has circle, and is formed by polymer.Barrier film 20 vertically moves, can be by the acoustic pressure that the people was heard of normal hearing to produce.

In this specific embodiment, be distinguished into the inside portion according to the barrier film 20 of this specific embodiment, it inwardly is provided with respect to boundary portion, is coupled in the upper end of sound coil 30 at this barrier film 20, and the outside portion, and it outwards is provided with respect to this boundary portion.This inside portion and this outside portion have cheese respectively, and this boundary portion is a planar-shaped.This outside portion is referred to as the edge.Barrier film 20 can have multiple variation on configuration, material and thickness.

Sound coil 30 is fixed in the lower surface of barrier film 20.The lower surface of this boundary portion is fixed in the upper end of sound coil 30.Lead upwards twines to form sound coil 30.Sound coil 30 is electrically connected in the terminal (not shown) that is arranged on the framework 10.Sound coil 30 via this terminal from outside received current.

The following quadrate part of sound coil 30 is arranged in the space that is perpendicular to one another between first permanent magnet 60, flat board 70 and the yoke 50 that is coupled.This space is referred to as the magnetic gap.When the high-frequency current of voice signal was applied in sound coil 30, this sound coil was by interactive and vertically mobile with the magnetic field that is produced by first permanent magnet 60.Therefore, the barrier film 20 that is coupled in sound coil 30 promptly can vibrate and produce sound.

First suspension 40 has elasticity, and its outer periphery is fixed in framework 10.This suspension can be described as elastic component, spring or blade type spring.Elasticity is defined as a main body will return to its original-shape after its volume and shape are changed by external force tendency.This elasticity is divided into the volume elasticity and the elasticity of shape.In this specific embodiment, first suspension 40 is about this elasticity of shape.

In this specific embodiment, first suspension 40 is an even shape, and more particularly, it has the circular plate shape corresponding to framework 10.First suspension 40 can comprise by the formed metallic plate of phosphor bronze (phosphorous bronze).As shown in Figure 6, several slotted holes 46 are defined in first suspension 40.In another specific embodiment, first suspension 40 can be formed by elastomer.Yoke 50 is fixed in the pars intermedia of first suspension 40.

First suspension 40 comprises first through hole 41 and hub part 42.First through hole 41 is defined in the central portion of first suspension 40, and hub part 42 projects upwards from first through hole 41.In this specific embodiment, because suspension 40 comprises this metallic plate, hub part 42 can use the metal procedure that comprises the punching press program to make simply.

In this specific embodiment, hub part 42 has hollow cylindrical.That is to say that hub part 42 its sections are circular.In addition, hub part 42 can be the cylindricality with multiple shape, and for example section is triangle, rectangle, pentagon and circle.The inboard of hub part 42 is hollow or fills up.Simultaneously, when first suspension 40 is formed by the elastomer beyond the metal, hub part 42 can have and suspension 40 identical materials.

The height of hub part 42 is corresponding to the thickness of the receiving slit of yoke 50.In this specific embodiment, the thickness of hub part 42 is lower than the thickness of yoke 50 slightly.

Yoke 50 is fixed in the upper surface of first suspension 40.Yoke 50 has around the flat bottom 54 of the outer periphery of bottom 54 and sidewall 56, and vertically is provided with.The bottom 54 of yoke 50 is coupled in first permanent magnet 60.

Be coupled in the hub part 42 of first suspension 40 and be arranged in the central portion of bottom 54 that yoke receiving slit 52 under the yoke 50 is arranged on yoke 50.The shape of yoke receiving slit 52 makes yoke receiving slit 52 be coupled in hub part 42 corresponding to the shape of hub part 42.

In this specific embodiment, cylindrical because hub part 42 has, yoke receiving slit 52 has cylindrical corresponding to hub part 42.The diameter of yoke receiving slit 52 is slightly greater than the outer dia of hub part 42, makes hub part 42 be mounted and is coupled in yoke receiving slit 52 regularly, and do not need to use independent adhesive agent.Because hub part 42 only is coupled in yoke receiving slit 52, the yoke 50 and first suspension 40 can be in that the position be coupled to each other accurately.In addition, this adhesive agent can be used between hub part 42 and the yoke receiving slit 52.

First permanent magnet 60 is fixed in the inside bottom surface of yoke 50.First permanent magnet 60 uses this adhesive agent coupling and is fixed in the bottom 54 of yoke 50, makes the permanent magnet 60 of winning be setting with one heart with respect to yoke 50.First permanent magnet 60 has the circular plate shape corresponding to yoke 50.

Dull and stereotyped 70 are fixed in the upper surface of first permanent magnet 60.Dull and stereotyped 70 are formed by a kind of material, and magnetic force can pass through well by this, and have the diameter roughly the same with first permanent magnet 60.

First permanent magnet 60 and dull and stereotyped 70 separates mutually with the sidewall 56 of yoke 50.One space definition is between the inner surface of the sidewall 56 of the outer surface of first permanent magnet 60 and dull and stereotyped 70 and yoke 50, and it faces with each other.The following quadrate part of sound coil 30 is arranged in this space.

First permanent magnet 60, flat board 70 and yoke 50 constitute these loudspeaker magnetic circuits.That is to say that the magnetic flux that is produced by first permanent magnet 60 forms magnetic flux path, it is directed at yoke 50 via dull and stereotyped 70.

Second suspension 80 separates downwards mutually with first suspension 40.The outer periphery of second suspension 80 is fixed in framework 10, and is formed by the rubber-like material.Second through hole 82 is defined in the central portion of second suspension 80.To pass through second through hole 82 at the 4th stopper 140 of explanation after a while.As shown in Figure 6, several slotted holes 86 are defined in second suspension 80.

In this specific embodiment, second suspension 80 has shape and the material identical with first suspension 40.In addition, first suspension 40 can have different materials and shape each other with second suspension 80.

Second magnet 90 is fixed in the lower surface of the lower side of second suspension 80.Therefore, second magnet 90 separates mutually with first suspension 40 and yoke 50.On the S utmost point of second magnet 90 and the N utmost point its upper side and lower side in vertical direction, vice versa.Simultaneously, second magnet 90 can comprise permanent magnet or electromagnet.The second magnet receiver hole 92 that the 4th stopper 140 passes through is defined in the central portion of second magnet 90.

Second magnet 90 and second suspension 80 can be as the vibrators that is used to produce vibration signal.In multifunctional micro speaker 1, comprise that second magnet 90 separates with the magnetic circuits that comprises permanent magnet 60 and dull and stereotyped 70 mutually with the vibrator of second suspension 80 according to this specific embodiment.But this magnetic circuits and this vibrator magnetic each other are connected.Therefore, the vibration that is used for sonorific barrier film 20 is moved and the vibration that comprises the vibrator of second magnet 90 and second suspension 80 interference between moving can be minimized.

The running and the effect of multifunctional micro speaker 1 below will be described.

Because multifunctional micro speaker 1 comprises first stopper 100 and the 4th stopper 140, so might control the yoke 50 that constitutes this magnetic circuits, the displacement that first permanent magnet 60 and dull and stereotyped 70 relies on left side and right side.

Simultaneously, because first stopper 100 and first suspension 40 vertically separate, so can adjust the vertical amplitude displacement of first suspension 40.

Though second suspension 80 and second magnet 90 are provided in aforementioned specific embodiment, and the present invention is not limited to this.That is to say that suspension only is being provided and is only having in the multifunctional micro speaker of magnet, first stopper 100 can be controlled the displacement that is displaced sideways of yoke 50.

Simultaneously, though first stopper 100 and the 4th stopper 140 are provided, be displaced sideways displacement in this specific embodiment can one of only provide in first stopper 100 and the 4th stopper 140 person to control this.

Figure 3 shows that the multifunctional micro speaker of another specific embodiment according to the present invention.In Fig. 3, have with Fig. 2 in the assembly of identical function can have identical Ref. No., therefore will omit their specific explanations.

Different with Fig. 2 is that second stopper 110 is provided in Fig. 3 in addition.

Second stopper 110 separates mutually with first stopper 100.First suspension 40 is arranged between second stopper 110 and first stopper 100.In this specific embodiment, this second stopper is outstanding from the inner peripheral of framework 10.

According to this specific embodiment, being displaced sideways displacement and can being controlled of yoke 50 by first stopper 100 and the 4th stopper 140.In addition, the vertical amplitude displacement of first suspension 40 can be adjusted according to the distance of being separated by between first stopper 100 and second stopper 110.

Figure 4 shows that the multifunctional micro speaker of another specific embodiment according to the present invention.In Fig. 4, have with Fig. 2 in the assembly of identical function can have identical Ref. No., therefore will omit their specific explanations.

Different with Fig. 2 is that the 3rd stopper 120 is provided in Fig. 4 in addition.

The 3rd stopper 120 separates mutually with the outer periphery of second magnet 90, and outstanding by the inner peripheral of framework 10.

In this specific embodiment, the displacement that is displaced sideways that constitutes second magnet 90 of this vibrator and second suspension 80 can be by 140 controls of the 4th stopper.In addition, this vibrator is displaced sideways displacement and can controls according to standoff distance between the outer periphery of the 3rd stopper 120 and second magnet 90.

Figure 5 shows that the multifunctional micro speaker of another specific embodiment according to the present invention.In Fig. 5, have with Fig. 2 in the assembly of identical function can have identical Ref. No., therefore will omit their specific explanations.

Different with Fig. 2 is, in Fig. 5, defines the permanent magnet receiver hole 62 of yoke receiver hole 58 by the central portion of yoke 50, the central portion by first permanent magnet 60 and the board joint batter 72 by dull and stereotyped 70 central portion.Yoke receiver hole 58, permanent magnet receiver hole 62 and board joint batter 72 communicate with each other.The hub part 42 that is projected upwards by first through hole 41 of first suspension 40 is coupled in each inner peripheral of yoke receiver hole 58, permanent magnet receiver hole 62 and board joint batter 72.Hub part 42 comprises bending part 44, and wherein board joint batter 72 is passed through in its upper end, and is folded into dull and stereotyped 70 upper surface.

Simultaneously in this specific embodiment, the 4th stopper 140 that projects upwards from the central portion of the lower surface lid member 11 of framework 10 extends up to dull and stereotyped 70 by the lower surface of framework 10.Side periphery separates mutually within the 4th stopper 140 and first through hole 41, yoke receiver hole 58, permanent magnet receiver hole 62 and the board joint batter 72.

In this specific embodiment, provide second suspension 80 and second magnet 90 simultaneously.

Second suspension 80 separates downwards mutually with first suspension 40.The outer periphery of second suspension 80 is fixed in framework 10.Second suspension 80 is formed by the rubber-like material.Second through hole 82 that is passed through by the 4th stopper 140 is defined in second suspension 80.

Second magnet 90 is fixed in the lower surface of second suspension 80.The second magnet receiver hole 92 that the 4th stopper 140 passes through is defined in the central portion of second magnet 90.Be arranged on the lower end of the 4th stopper 140 towards second magnet, 90 outstanding protuberances 141.The 4th stopper 140 separates mutually with the inner peripheral of the second magnet receiver hole 92.

According to the specific embodiment of Fig. 5, might reach the advantage of aforementioned specific embodiment.That is to say that the displacement that is displaced sideways of yoke 50 can be by first stopper 100 and the control of second stopper 140, and this vertical amplitude displacement can be by 100 controls of first stopper.In addition, yoke 50, first permanent magnet 60 and dull and stereotyped 70 can fixed to one anotherly be coupled, and therefore can improve their combination accuracy.

Certainly the specific embodiment of Fig. 5 can have the example of multiple correction.

For example, though first stopper 100 and second stopper 140 are provided in the specific embodiment of Fig. 5, it one of also can only provide in first stopper 100 and second stopper 140 person.

Simultaneously, though hub part 42 by board joint batter 72, and comprises bending part 44 in the specific embodiment of Fig. 5, hub part 42 can project upwards a height, and hub part 44 is coupled in this inner peripheral of yoke receiver hole 58 at least by this.That is to say that the upper end of hub part 42 can be arranged on its position that is coupled in the inner peripheral of yoke receiver hole 58, permanent magnet receiver hole 62 or board joint batter 72.

Simultaneously, though yoke 50, first permanent magnet 60 and dull and stereotyped 70 are passed through each other, yoke 50, first permanent magnet 60 and dull and stereotyped 70 can comprise the groove shape with a desired depth, make hub part 42 can with its coupling.This other groove can have the shape identical with above-mentioned yoke receiving slit 52.Certainly, this groove can be defined in first permanent magnet 60 or dull and stereotyped 70.

In the specific embodiment of Fig. 5, the 4th stopper 140 extends to dull and stereotyped 70.But the 4th stopper 140 and first suspension 40 can be controlled this and be displaced sideways displacement, as long as the 4th stopper 140 extends up to towards a position of the inner peripheral of the first through hole 41 at least.Therefore, the upper end of the 4th stopper 140 can be arranged on towards a position of the inner peripheral of yoke receiver hole 58, permanent magnet receiver hole 62 or board joint batter 72.

In another specific embodiment, this second magnet can be arranged on this second suspension.

In multifunctional micro speaker according to the present invention, constitute the yoke, first permanent magnet of this magnetic circuits and dull and stereotyped be displaced sideways displacement and can be controlled to and prevent that this yoke, this first permanent magnet and this flat board from relying on a side, and adjust the displacement amplitude of these assemblies that constitute this magnetic circuits.

Simultaneously, this vibrator be displaced sideways displacement and amplitude can be controlled.

Simultaneously, the interference between this magnetic circuits and this vibrator can be minimized and reduce this non-perpendicular vibration.

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

The primary clustering symbol description

1 multifunctional micro speaker

10 frameworks

11 lower surface lid member

12 upper frames

13 underframes

14 cap member

20 barrier films

30 sound coils

40 first suspensions

41 first through holes

42 hub parts

44 bending parts

46 slotted holes

50 yokes

52 yoke receiving slits

54 bottoms

56 sidewalls

58 yoke receiver holes

60 first permanent magnets

62 permanent magnet receiver holes

70 flat boards

72 board joint batters

80 second suspensions

82 second through holes

86 slotted holes

90 second magnet

92 second magnet receiver holes

100 multifunctional micro speakers

100 first stoppers

101 barrier films

102 sound coils

103 flat boards

104 permanent magnets

105 yokes

107 top suspensions

108 below suspensions

110 shells

110 second stoppers

114 lead a

115 lead b

120 the 3rd stoppers

140 the 4th stoppers

141 protuberances

Claims

1. a multifunctional micro speaker is characterized in that, comprises:

Framework;

Barrier film, its outer periphery is fixed in this framework;

Sound coil, it is fixed in the lower surface of this barrier film;

First suspension, its outer periphery is fixed in this framework, and this first suspension has elasticity;

Yoke, it is fixed in this first suspension, and this yoke has lower surface and sidewall;

First permanent magnet, it is fixed in the lower surface of this yoke;

Flat board, it is fixed in the upper surface of this first permanent magnet; And

First stopper, it separates mutually with the sidewall of this yoke, relies on a side to prevent this yoke.

2. multifunctional micro speaker as claimed in claim 1 is characterized in that, this first stopper separates mutually with this first suspension.

3. multifunctional micro speaker as claimed in claim 1 is characterized in that, this first stopper is outstanding from the inner peripheral of this framework.

4. multifunctional micro speaker as claimed in claim 3 is characterized in that this yoke is fixed in the upper surface of this first suspension.

5. multifunctional micro speaker as claimed in claim 4 is characterized in that other comprises second stopper, and it separates mutually with this first stopper,

Wherein this first suspension is arranged between this first stopper and this second stopper.

6. multifunctional micro speaker as claimed in claim 5 is characterized in that, wherein this second stopper is outstanding from the inner peripheral of this framework.

7. multifunctional micro speaker as claimed in claim 3 is characterized in that other comprises the hub part, and its central portion from this first suspension projects upwards,

The yoke receiving slit that wherein is coupled in the hub part of this first suspension is defined in this yoke.

8. multifunctional micro speaker as claimed in claim 3 is characterized in that other comprises:

The yoke receiver hole, it is by the central portion of this yoke;

The permanent magnet receiver hole, it is by the central portion of this first permanent magnet;

The board joint batter, it is by this dull and stereotyped central portion; And

The hub part, its central portion from this first suspension projects upwards,

Wherein this yoke receiver hole, this permanent magnet receiver hole and this board joint batter communicate with each other, and the upper end of this hub part is arranged on towards the position of the inner peripheral of this yoke receiver hole at least.

9. multifunctional micro speaker as claimed in claim 8 is characterized in that, wherein at least one part of the upper end of the hub part of this first suspension is bent provides the bending part.

10. multifunctional micro speaker as claimed in claim 1 is characterized in that other comprises:

Second suspension, its outer periphery is fixed in this framework, and this second suspension with this first suspension mutually separates downwards, and have elasticity; And

Second magnet, it is fixed in this second suspension, and this second magnet separates mutually and is fixed on this first suspension and this yoke.

11. multifunctional micro speaker as claimed in claim 10 is characterized in that, other comprises the 3rd stopper, and its outer periphery with this second magnet separates mutually, and outstanding by the inner peripheral of this framework.

12. a multifunctional micro speaker is characterized in that, comprises:

Framework;

Barrier film, its outer periphery is fixed in this framework;

Sound coil, it is fixed in the lower surface of this barrier film;

First suspension, its outer periphery is fixed in this framework, and first through hole defines in the central in the portion, and this first suspension has elasticity;

Yoke, it is fixed in the upper surface of this first suspension;

First permanent magnet, it is fixed in the lower surface of this yoke;

The 4th stopper, its lower surface from this framework is outstanding, and is inserted into this first through hole, and the 4th stopper separates mutually with the inner peripheral of this first through hole.

13. multifunctional micro speaker as claimed in claim 12, it is characterized in that, wherein be arranged on this first suspension from the hub part that this first through hole projects upwards, the yoke receiving slit that is coupled in this hub part of this first suspension is defined in this yoke, and the upper surface of the 4th stopper is to the inner peripheral of this first through hole.

14. multifunctional micro speaker as claimed in claim 12 is characterized in that, other comprises:

The yoke receiver hole, it is by the central portion of this yoke;

The board joint batter, it is by this dull and stereotyped central portion; And

The hub part, it is projected upwards by this first through hole,

15. multifunctional micro speaker as claimed in claim 12 is characterized in that, also comprises:

Second suspension, its outer periphery is fixed in this framework, and is passed through by the 4th stopper, and this second suspension with this first suspension mutually separates downwards, and have elasticity; And

Second magnet, it is fixed in the lower surface of this two suspension,

Wherein the second magnet receiver hole that passes through of the 4th stopper is defined in the central portion of this second magnet, and the 4th stopper separates mutually with the inner peripheral of this second magnet receiver hole.

16. multifunctional micro speaker as claimed in claim 15 is characterized in that, also comprises outer periphery from the lower end of the 4th stopper protuberance outstanding and that separate mutually with this second magnet.