CN104581561A - Small loudspeaker device - Google Patents
Small loudspeaker device Download PDFInfo
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- CN104581561A CN104581561A CN201410657911.1A CN201410657911A CN104581561A CN 104581561 A CN104581561 A CN 104581561A CN 201410657911 A CN201410657911 A CN 201410657911A CN 104581561 A CN104581561 A CN 104581561A
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- voice coil
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Abstract
The invention provides a small loudspeaker device. The small loudspeaker device avoids interference of an outgoing line (30A) educed from a voice coil (3) as well as a vibrating plate (2), and inhibits damage caused by confliction with a bottom surface (4A) of a magnetic circuit (4) to the outgoing line (30A). The small loudspeaker device comprises the outgoing line (30A) of the voice coil (3), and an outgoing part (30) which transversely penetrates through the voice coil (3) and is positioned on an end surface (3A) opposite to the vibrating plate (2); the magnetic circuit (4) comprises the bottom surface (4A) which is configured oppositely to the end surface (3A) of the voice coil (3) of a magnetic gap (4G); a retreating part (40) for retreating the outgoing part (30) when the end surface (3A) of the voice coil (3) is propped against or approaches the bottom surface (4A) is formed on the bottom surface (4A).
Description
The divisional application of the application's to be original bill application number be application for a patent for invention (international application no: PCT/JP2009/051646, the applying date: on January 30th, 2009, denomination of invention: speaker unit) of 200980155629.0.
Technical field
The present invention relates to a kind of small speaker devices.
Background technology
In general speaker unit, the voice coil loudspeaker voice coil being fixed in oscillating plate is vibrated to be configured in the magnetic gap of magnetic circuit freely.The portion of terminal be arranged on speaker frame is connected to from the derivative lead-out wire of voice coil loudspeaker voice coil (lead-in wire).
Because the surrounding of the below of voice coil loudspeaker voice coil (side contrary with oscillating plate) is surrounded by the component parts of magnetic circuit, generally draw from the upside (oscillating plate side) of voice coil loudspeaker voice coil from the derivative lead-out wire of voice coil loudspeaker voice coil.And derivative lead-out wire is directed to the portion of terminal of speaker frame from voice coil loudspeaker voice coil, so that edge is to oscillating plate.In device described in following patent documentation 1, oscillating plate is divided into central top board and lateral roof, and voice coil loudspeaker voice coil is hung down on the inner edge of lateral roof, and the upside along lateral roof configures from the derivative lead-out wire in the upside of voice coil loudspeaker voice coil.
Patent documentation 1: Japanese Patent Publication 2009-10512 publication
Summary of the invention
The problem that invention will solve
As conventional art, when along oscillating plate configuration lead-out wire derivative from voice coil loudspeaker voice coil, when vibration plate vibrates, oscillating plate contact with lead-out wire sometimes, therefore produces the problem that the different sound of generation or the vibration of oscillating plate are hindered and so on.In addition, in order to avoid the interference of oscillating plate and lead-out wire, sometimes downside (opposition side of the sound equipment radiation direction SD) space of the peripheral part (edge part) of oscillating plate is also utilized to guide guide line to speaker frame from voice coil loudspeaker voice coil, but now make edge part become convex towards sound equipment radiation direction SD, in order to avoid edge part encounters lead-out wire, and because oscillating plate is outstanding before framework, so when being equipped on the situation etc. in miniaturized electronics, need installation space before framework, so produce the problem of requirement that cannot be corresponding slim or miniaturized.
Also have lead-out wire is integrated with oscillating plate and situation that is that draw, but oscillating plate upsets weight balancing because of the integration of lead-out wire, especially oscillating plate be slim or light weight when, the bad influence of acoustic characteristic is become large.If with very thin oscillating plate, then also sometimes cannot realize this action of supporting lead-out wire own.
In addition, the end face of voice coil loudspeaker voice coil is directly being engaged in oscillating plate, and when drawing lead-out wire from the oscillating plate side end face of voice coil loudspeaker voice coil, lead-out wire has to pass through junction sometimes.In this situation, produce the problem that engaging force declines compared with when tabular surface being engaged in oscillating plate.
Process this problem, can consider draw lead-out wire from the end face being positioned at the opposition side of oscillating plate side of voice coil loudspeaker voice coil and lead-out wire is guided to portion of terminal away from oscillating plate.Now, a side of a pair lead-out wire crosses downside (being positioned at the opposition side of the side the being engaged in oscillating plate) end face of voice coil loudspeaker voice coil and is drawn.According to the outbound course of this lead-out wire, then when drop impact or when the amplitude of voice coil loudspeaker voice coil is larger, the downside end face of voice coil loudspeaker voice coil runs into the bottom surface of magnetic circuit sometimes, now because lead-out wire crosses the downside end face of voice coil loudspeaker voice coil, thus produce impact weight and concentrate the problem that on 1 lead-out wire putting on and cross, lead-out wire is easily impaired.
The present invention is using the example of this problem of process as problem.That is, the object of the invention is to, avoid the interference from the derivative lead-out wire of voice coil loudspeaker voice coil and oscillating plate; Avoid the interference of lead-out wire and oscillating plate to the vibration characteristics deterioration of the generation or oscillating plate that suppress different sound; Even if also sufficient engaging force can be obtained when directly engaging oscillating plate and voice coil loudspeaker voice coil; Suppress the damage etc. of the lead-out wire caused because voice coil loudspeaker voice coil conflicts with the bottom surface of magnetic circuit.
For the means of dealing with problems
In order to realize this object, at least possesses the structure involved by following aspect based on small speaker devices of the present invention.
This small speaker devices has: stationary part; Oscillating plate, it is supported in described stationary part; Voice coil loudspeaker voice coil, it is engaged in described oscillating plate directly or indirectly; And lead-out wire, its being drawn with a part for described oscillating plate opposite side from described voice coil loudspeaker voice coil.
Accompanying drawing explanation
Fig. 1 is the key diagram of the characteristic of the speaker unit represented involved by one embodiment of the present invention.
Fig. 2 is the key diagram (major part profile) of the characteristic more specifically of the speaker unit represented involved by embodiments of the present invention.
Fig. 3 is the key diagram (stereogram of yoke) of the characteristic more specifically of the speaker unit represented involved by embodiments of the present invention.
Fig. 4 is the key diagram (key diagram of the lead-out wire of voice coil loudspeaker voice coil is described) of the characteristic more specifically of the speaker unit represented involved by embodiments of the present invention.
Fig. 5 is the key diagram (representing the key diagram of the function of backoff portion) of the characteristic more specifically of the speaker unit represented involved by embodiments of the present invention.
Fig. 6 is the integrally-built vertical view except oscillating plate of the speaker unit represented involved by embodiments of the present invention.
Fig. 7 is the integrally-built vertical view except oscillating plate of the speaker unit represented involved by embodiments of the present invention.
Fig. 8 is the integrally-built vertical view except oscillating plate of the speaker unit represented involved by embodiments of the present invention.
Fig. 9 is the key diagram of the speaker unit represented involved by other execution modes of the present invention.
Figure 10 is the key diagram (this figure (a) represents one of extraction channel 5 end view forming example, and this figure (b) is other end views formed representing extraction channel 5) of the formation example of the extraction channel represented in embodiments of the present invention.
Figure 11 represents that in embodiments of the present invention, (this figure (a) is the vertical view of voice coil loudspeaker voice coil 3 from the key diagram of the example of the outbound course of voice coil loudspeaker voice coil extraction lead-out wire, this figure (b) is the enlarged drawing near the winding start position in the wire 30A of the voice coil loudspeaker voice coil 3 shown in this figure (a), and this figure (c) is the enlarged drawing near the winding end position of the wire 30A of the voice coil loudspeaker voice coil 3 that this figure (a) represents.In addition, this figure (d) and this figure (e) is the key diagram of the distortion row representing this figure (b) and the voice coil loudspeaker voice coil shown in this figure (c) respectively).
Figure 12 is the key diagram of the speaker unit represented involved by other execution modes of the present invention.
Figure 13 is the key diagram of the electronic equipment representing the speaker unit possessed involved by embodiments of the present invention.
Embodiment
Hereinafter, with reference to the accompanying drawings of embodiments of the present invention.Although embodiments of the present invention comprise illustrated content, be not limited only to this.Fig. 1 is the key diagram of the characteristic of the speaker unit represented involved by one embodiment of the present invention.Speaker unit 1 has oscillating plate 2, voice coil loudspeaker voice coil 3, magnetic circuit 4 and omits illustrated stationary part.
Oscillating plate 2 is supported in and omits illustrated stationary part.Be the position of the vibration geo-stationary caused relative to the driving by voice coil loudspeaker voice coil 3 in this said stationary part, not refer to that itself is completely static.The framework of speaker unit 1 or magnetic circuit 4 self or its part etc., or by have speaker device mounted thereon 1 become stationary part by lift-launch position etc.In addition, when magnetic circuit is stationary part, speaker unit 1 has the structure of the yoke supporting oscillating plate 2 of formation magnetic circuit described later, such as, is supported the peripheral part of oscillating plate 2 at the peripheral part of yoke.
The end side of voice coil loudspeaker voice coil 3 is engaged in oscillating plate 2 directly or indirectly.As shown in the figure, an end face 3B of the sound equipment radiation direction SD side of voice coil loudspeaker voice coil 3 directly can be engaged in oscillating plate 2, also by supports such as speech coil frameworks, voice coil loudspeaker voice coil 3 be engaged in oscillating plate 2.When being engaged by supports such as speech coil frameworks, support can be made to be held in stationary part by maintaining bodies such as dampers.
Magnetic circuit 4 is formed and is configured the magnetic gap 4G of voice coil loudspeaker voice coil 3, and is supported in and omits illustrated stationary part or magnetic circuit 4 self becomes stationary part.As described later, magnetic circuit 4 comprises the constitutive requirements such as yoke, magnetite and thin plate.When magnetic gap 4G is formed as all shapes, the internal magnetic type configuring magnetite within it, the external magnetic type configuring magnetite outside it can be adopted and configure any one in the double magnetic type (the outer magnetic of interior magnetic also uses type) of magnetite in its both sides.
In addition, when being used in the magnetite that sound equipment radiation direction SD is magnetized, thin plate is used to form magnetic gap 4G.Further, magnetite that the direction substantially vertical relative to voice coil loudspeaker voice coil radiation direction SD is magnetized can be used in adopt the magnetic circuit of internal magnetic type or external magnetic type.Now, magnetic gap 4G is formed by yoke and magnetite.The magnetic circuit of the double magnetic type magnetite be magnetized on the direction substantially vertical relative to sound equipment radiation direction SD being configured at inner side and outside can be adopted.Now, between the magnetite in inner side and outside, magnetic gap 4G is formed.In addition, when adopting aforesaid magnetic circuit, necessarily not using yoke, as required, magnetite or thin plate can be supported by framework described later (nonmagnetic material).When supporting magnetite or thin plate by framework, there is the bottom surface relative with the end face of voice coil loudspeaker voice coil 3, and become stationary part.In addition, the repulsion type magnetic circuit (inner side of voice coil loudspeaker voice coil 3 or outside are configured magnetite) that thin plate is supported by framework with multiple magnetites of seizing this thin plate on both sides by the arms can be used, this situation middle frame also has the bottom surface relative with the end face of voice coil loudspeaker voice coil 3, and becomes stationary part.
And in the speaker unit 1 involved by embodiments of the present invention, the lead-out wire 30A with voice coil loudspeaker voice coil 3 crosses the end face 3A being positioned at the opposition side of oscillating plate 2 side of voice coil loudspeaker voice coil 3 and derivative lead division 30.Voice coil loudspeaker voice coil 3 is transfused to the signal input terminal of audio signal owing to being connected to, so one opposite end portions is not linked to lead-out wire 30A.Reel 1 wire and the voice coil loudspeaker voice coil 3 that is formed can form lead-out wire 30A by the prolongation at the two ends of its wire.
In embodiments of the present invention, lead-out wire 30A draws from the end of oscillating plate 2 side of voice coil loudspeaker voice coil 3, but draw from the end of oscillating plate 2 side than voice coil loudspeaker voice coil 3 closer to a part for the voice coil loudspeaker voice coil 3 opposition side of sound equipment radiation direction SD, more specifically draw from the end with oscillating plate 2 opposite side (opposition side of sound equipment radiation direction SD).If now a pair signal input terminal both sides are in a side side of voice coil loudspeaker voice coil 3, then a side of a pair lead-out wire 30A must cross the end face 3A of voice coil loudspeaker voice coil 3, and end face 3A is formed lead division 30.In addition, be not limited to embodiments of the present invention, such as, lead-out wire 30A also can be drawn from the side of voice coil loudspeaker voice coil 3 of the opposition side being positioned at the side being configured signal input terminal, namely, when signal input terminal is configured in outside relative to voice coil loudspeaker voice coil 3, except the end face 3A of voice coil loudspeaker voice coil 3, from the end of oscillating plate 2 side than voice coil loudspeaker voice coil 3 closer to magnetic circuit 4 side, namely the inner side surface 3C of voice coil loudspeaker voice coil 3 is drawn, or when signal input terminal is configured in inner side relative to voice coil loudspeaker voice coil 3, drawn from the outer lateral side 3D of voice coil loudspeaker voice coil 3, and cross the end face 3A of voice coil loudspeaker voice coil 3 and be wound.That is, crossing the end face 3A of voice coil loudspeaker voice coil 3 and be wound, as long as the extraction location of lead-out wire 30A is than the end of oscillating plate 2 side of voice coil loudspeaker voice coil 3 closer to magnetic circuit 4 side, then can be any position of voice coil loudspeaker voice coil 3.
In contrast, in speaker unit 1, magnetic circuit 4 has the bottom surface 4A relative with the end face 3A of the voice coil loudspeaker voice coil 3 being configured in magnetic gap 4G, bottom surface 4A is formed the backoff portion 40 that end face 3A abuts or aforesaid lead division 30 is kept out of the way when the 4A of bottom surface of voice coil loudspeaker voice coil 3.
As shown in Fig. 1 (a), backoff portion 40 can be formed on the bottom surface 4A position recess 40A corresponding with lead division 30, as shown in this figure (b), also can be at the peristome 40B being formed on the bottom surface 4A position corresponding with lead division 30.Recess 40A is relative to bottom surface 4A and in the part recessed with sound equipment radiation direction SD opposite side, peristome 40B is the part of the opening being formed the bottom running through magnetic circuit 4.
According to the speaker unit 1 with this feature, because draw from the derivative lead-out wire 30A of voice coil loudspeaker voice coil 3 from the end with oscillating plate 2 side opposite side, lead-out wire 30A can be suppressed the interference of oscillating plate 2.Can suppress thus to be contacted with lead-out wire 30A by oscillating plate 2 and the vibration characteristics of the generation of different sound that causes or oscillating plate 2 declines.Especially the speaker unit being used in the carried terminal equipment such as mobile phone is higher to requirement that is small-sized or slimming, is mostly used the oscillating plate of light weight or minimal thickness as oscillating plate (vibrating reed).If this oscillating plate interfered by lead-out wire, then export the impact brought to sound equipment and will become large, but if speaker unit 1 involved according to the embodiment of the present invention, then oscillating plate 2 performance of this light weight or minimal thickness can not be made to reduce it just can be made to vibrate.
Further, according to speaker unit 1, because draw from the derivative lead-out wire 30A of voice coil loudspeaker voice coil 3 from the end with oscillating plate 2 side opposite side, so can by the end face 3B adhesive bond of the oscillating plate side of voice coil loudspeaker voice coil 3 in oscillating plate 2.Thereby, it is possible to cohesive force when enhancing oscillating plate 2 directly engaging voice coil loudspeaker voice coil 2, and the vibration of voice coil loudspeaker voice coil 3 positively can be passed to oscillating plate 2.
And, because speaker unit 1 is formed with backoff portion 40 on the bottom surface 4A of the magnetic circuit 4 as stationary part, even if so when drawing lead-out wire 30A from the end being positioned at the opposition side of oscillating plate 2 side of voice coil loudspeaker voice coil 3, lead-out wire 30A also can be suppressed to run into the bottom surface 4A of magnetic circuit 4 and the unfavorable condition damaged.Lead division 30 crosses the end face 3A of voice coil loudspeaker voice coil 3 and derivative part for lead-out wire 30A.This part becomes at the end face 3A than voice coil loudspeaker voice coil 3 closer to the part of 4A side, bottom surface projection partly, if there is no backoff portion 40 at bottom surface 4A, then the end face 3A of voice coil loudspeaker voice coil 3 is when abutting or near the bottom surface 4A of magnetic circuit 4, and lead-out wire 30A conflicts with bottom surface 4A partly and is subject to centrality and impacts.In speaker unit 1, when the end face 3A of voice coil loudspeaker voice coil 3 abut or near the bottom surface 4A of magnetic circuit 4 time, lead division 30 is contained in backoff portion 40, the lead-out wire 30A of lead division 30 can be suppressed thus to be subject to centrality and impact.
Be equipped on the speaker unit that mobile phone etc. carries electronic equipment to be required to maintain the performance of drop impact.When speaker unit is subject to drop impact, in the small-sized or slim speaker unit that the supporting force of oscillating plate (vibrating reed) or damper etc. is more weak relative to the weight of voice coil loudspeaker voice coil, the state of affairs conflicted in the bottom surface producing the end face and magnetic circuit that are positioned at the opposition side of oscillating plate side of voice coil loudspeaker voice coil.Even if the speaker unit involved by embodiments of the present invention 1 is in this state of affairs, also hold lead division 30 in backoff portion 40, thus avoid lead-out wire 30A to be subject to larger impact.Therefore, speaker unit 1 when be equipped on carry electronic equipment, can guarantee to maintain the performance of drop impact.
Even being equipped on mobile phone etc., to carry the speaker unit of electronic equipment also the same with common speaker unit, be required large output, bass is emphasized, the sound equipment performance of low distortion.To this, the winding width (long voice coil) increasing voice coil loudspeaker voice coil becomes a processing mechanism.In this case, because the amplitude of voice coil loudspeaker voice coil becomes large, thus the end face being positioned at the opposition side of oscillating plate side of voice coil loudspeaker voice coil easily runs into the bottom surface of magnetic circuit.Relative to this, speaker unit 1 involved by embodiments of the present invention holds lead division 30 due to backoff portion 40 thus avoids lead-out wire 30A to be subject to larger impact, so can be exported greatly, bass is emphasized, while the sound equipment performance of low distortion, can suppress the unfavorable condition caused by the damage of lead-out wire 30A.
More specifically, forming the recess 40A of backoff portion 40, preferably to have equal with the external diameter of lead-out wire 30A or larger than it section relative to the bottom surface 4A of magnetic circuit 4 poor.Due to, even if when the end face 3A of voice coil loudspeaker voice coil 3 runs into the bottom surface 4A of magnetic circuit 4, all lead-out wire 30A also can be held and lead-out wire 30A is not vulnerable to impact in recess 40A.
Further, form the recess 40A of backoff portion 40 and can be formed as the corresponding shape in the region of the end face 3A crossing voice coil loudspeaker voice coil 3 to lead-out wire 30A.Thereby, it is possible to be limited in by the width of recess in necessary width, and the impact on the magnetic density in magnetic circuit 4 can be reduced.
And, by by from the end face relative with oscillating plate 2 of magnetic circuit 4 (above) the distance L2 of 4B to bottom surface 4A is set to the distance L1 (L1 < L2) of the end face 3A be greater than from oscillating plate 2 to voice coil loudspeaker voice coil 3, thus run into the bottom surface 4A of magnetic circuit 4 at the end face 3A of voice coil loudspeaker voice coil 3 before, oscillating plate 2 will run into the end face 4B of magnetic circuit 4, can reduce and run into by end face 3A the impact that bottom surface 4A causes.Even if when oscillating plate 2 first runs into end face 4B, also have the end face 3A of voice coil loudspeaker voice coil 3 because of the distortion of oscillating plate 2 and run into the situation of the bottom surface 4A of magnetic circuit 4, even if so when being set to L1 < L2, also need to arrange backoff portion 40.
And, driving in the state before speaker unit, can by from oscillating plate 2 to magnetic circuit 4 the end face relative with oscillating plate 2 (above) the distance L3 of 4B is set smaller than the distance " L2-L1 " (L2-L1 < L3) of the bottom surface 4A from the end face 3A of voice coil loudspeaker voice coil 3 to magnetic circuit 4, can reduce and run into by end face 3A the impact that bottom surface 4A causes.In addition, because because of the distortion of oscillating plate 2, the end face 3A of voice coil loudspeaker voice coil 3 runs into the bottom surface 4A of magnetic circuit 4, so also can arrange backoff portion 40 sometimes.
Fig. 2 ~ Fig. 5 is that (Fig. 2 is major part profile for the key diagram of the characteristic more specifically of the speaker unit represented involved by embodiments of the present invention, Fig. 3 is the stereogram of yoke, Fig. 4 is the key diagram of the lead-out wire that voice coil loudspeaker voice coil is described, Fig. 5 is the key diagram of the function representing backoff portion).In speaker unit 1A, magnetic circuit 4 is formed with magnetic gap 4G between the part and a part for the 2nd magnetic pole piece 42 of the 1st magnetic pole piece 41,1st magnetic pole piece 41 is formed the extraction channel 5 that lead-out wire 30A passes through, and lead-out wire 30A is drawn towards signal input terminal by extraction channel 5.In the example shown in Fig. 2 ~ Fig. 5, extraction channel 5 be set in the 1st magnetic pole piece 41 side and draw lead-out wire 30A in the outside of magnetic circuit 4, but also can form extraction channel 5 in the 2nd magnetic pole piece 42 side and draw lead-out wire 30A in the inner side of magnetic circuit 4.Now be formed towards the peristome of portion of terminal in the inner side of magnetic circuit 4.
According to this, by forming extraction channel 5 at magnetic circuit 4, lead-out wire 30A can be made by extraction channel 5 and can not draw towards signal input terminal near oscillating plate 2.Therefore, when being drawn from the oscillating plate 2 side opposite side with voice coil loudspeaker voice coil 3 by lead-out wire 30A, the unfavorable condition that the interference because of lead-out wire 30A and oscillating plate 2 causes more positively can be suppressed.
The magnetic circuit 4 of internal magnetic type shown in Fig. 2 ~ Fig. 5 is as an example.This speaker unit 1A has framework 10 as stationary part, and oscillating plate 2 has center vibration portion 2A and edge part 2B, and described edge part 2B is formed on outside it, and peripheral part is supported in the framework 10 as stationary part.Center vibration portion 2A and edge part 2B can be the parts of one, also can be other parts.Further, be mounted with the strengthening part 11 of rigidity higher than this center vibration portion 2A in center vibration portion 2A as required, its outer peripheral portion is crossed the edge portion of the 2nd magnetic pole piece 42 and extends on voice coil loudspeaker voice coil 3.In addition, in adjustment acoustic characteristic, near the interior edge that its outer peripheral portion of strengthening part 11 also can cross voice coil loudspeaker voice coil 3 or near edge portion or edge portion and extending.By installing this strengthening part 11, thus being reinforced the power of the supporting voice coil loudspeaker voice coil 3 based on oscillating plate 2, when oscillating plate 2 contacts a part for magnetic circuit 4, can suppressing because oscillating plate 2 is bending that the end face 3A of voice coil loudspeaker voice coil 3 conflicts with the bottom 4 of magnetic circuit 4.In addition, such as, form strengthening part 11 by polyphenylene sulfone resins etc., and make the thickness of the Thickness Ratio strengthening part 11 of center vibration portion 2A or edge part 2B thin, also can be formed by Polyetherimide or metal material etc.
In the example in the figures, the end side of voice coil loudspeaker voice coil 3 is engaged in the inner peripheral portion of the outer peripheral portion of center vibration portion 2A or the boundary member of center vibration portion 2A and edge part 2B or edge part 2B.Now, because draw from the derivative lead-out wire 30A of voice coil loudspeaker voice coil 3 from the end with oscillating plate 2 side opposite side, so can by the end face 3B adhesive bond of oscillating plate 2 side of voice coil loudspeaker voice coil 3 in oscillating plate 2.Suitably can maintain the engaging force of oscillating plate 2 and voice coil loudspeaker voice coil 3 thus, and the vibration of voice coil loudspeaker voice coil 3 positively can be passed to oscillating plate 2.
Further, in the example in the figures, the framework 10 becoming stationary part is mounted with protecgulum 12 to cover edge part 2B.While becoming the peripheral part of framework 10 side-strut edge 2B of stationary part, supporting magnetic circuit 4.And framework 10 is equipped with signal input terminal 13, this signal input terminal is connected the end of derivative lead-out wire 30A.
In this example, edge part 2B is formed concavity relative to sound equipment radiation direction SD.While avoiding edge part 2B interference protecgulum 12 accordingly, reduce the space needed for sound equipment radiation direction SD side of oscillating plate 2, seek the slimming of speaker unit 1A entirety.And, by edge part 2B is set as concavity relative to sound equipment radiation direction SD, thus at voice coil loudspeaker voice coil 3 to when moving in a large number with oscillating plate 2 side opposite side, the edge part 2B of concavity touches a part for magnetic circuit 4 and easily becomes the resistance of the excessive movement relative to voice coil loudspeaker voice coil 3.Voice coil loudspeaker voice coil 3 excessive vibration can be suppressed accordingly and conflict with the bottom 4A of magnetic circuit 4.Owing to drawing from the derivative lead-out wire 30A of voice coil loudspeaker voice coil 3 from the end with oscillating plate 2 side opposite side, therefore, it is possible to while making speaker unit 1A slim, guarantee the sufficient space be set as by edge part 2B on magnetic circuit 4 needed for concavity.
Further, in the example in the figures, when not vibrating, the voice coil loudspeaker voice coil bonding station 2C of the oscillating plate 2 and bonding station 2B1 relative to framework 10 (stationary part) of edge part 2B is on roughly equal height.Seek the complanation before oscillating plate 2 thus.In speaker unit 1A, because draw lead-out wire 30A, so without the need to vacating larger space near oscillating plate 2 from the end being positioned at the opposition side of oscillating plate 2 side of voice coil loudspeaker voice coil 3.Therefore, speaker unit 1A can realize slimming or complanation, and can become and be equipped on the small-sized favourable structure carrying electronic equipment.
As shown in Figures 2 and 3,1st magnetic pole piece 41 of magnetic circuit 4 is formed by yoke 41A, this yoke 41A has bottom surface sections 41A1 and the wall portion 41A2 of periphery holding up into this bottom surface sections 41A1 of encirclement, 2nd magnetic pole piece 42 is formed by thin plate 42A and magnetite 42B, between the inner face and the inner face of thin plate 42A of the wall portion 41A2 of yoke 41A, be formed magnetic gap 4G.
Magnetic gap 4G is configured to all shapes, is formed the 1st magnetic pole piece 41 (yoke 41A) in the outside of the magnetic gap 4G being configured to all shapes, is formed the 2nd magnetic pole piece 42 comprising magnetite 42B in the inner side of magnetic gap 4G.And the 1st magnetic pole piece 41 (yoke 41A) is formed extraction channel 5, and lead-out wire 30A is drawn to the outside of magnetic circuit 4 by this extraction channel 5.This extraction channel 5 is formed in backoff portion 40 continuously.
Further, in the example shown in Fig. 3, the 1st magnetic pole piece 41 (yoke 41A) has multiple bight, and backoff portion 40 and extraction channel 5 are formed near bight.Backoff portion 40 is formed on the bottom surface sections 41A1 of yoke 41A, and is formed to narrow gradually towards the width of the backoff portion 40 of extraction channel 5.In Fig. 3 yoke 41A corner on be formed the form that can become backoff portion 40 and extraction channel 5, but in fact, select wherein 2,2 of being preferably on diagonal use as backoff portion 40 and extraction channel 5.Further, can use as required be only formed backoff portion 40 and extraction channel 5 in 2 bights in case lead-out wire 30A can by and be not formed the yoke 41A of backoff portion 40 and extraction channel 5 in other 2 bights.And backoff portion 40 in the example in the figures, its flat shape is formed near the bight of magnetic circuit 4, but be not limited to this, also can be set as the flat shape of the Network shape of the shape along voice coil loudspeaker voice coil 3, as long as guaranteed the region that lead division 30 can be kept out of the way.
As shown in Figure 3, extraction channel 5 is formed on the discontinuous part of the wall portion 41A2 of yoke 41A.Further, in the upper part of extraction channel 5, be formed notch 5A at wall portion 41A2, and the width being formed extraction channel periodically becomes large by notch 5A.More specifically, as shown in Figure 2, be formed towards the stage portion 43C of sound equipment radiation direction SD along the outside of backoff portion 40 at the boundary member of wall portion 41A2 and bottom surface sections 41A1.
By forming extraction channel 5 in backoff portion 40 continuously, the lead-out wire 30A in backoff portion 40 can be extended continuously and lead to extraction channel 5.Thereby, it is possible to avoid the larger complications of lead-out wire 30A and outwards draw lead-out wire 30A in magnetic circuit 4.Now, because backoff portion 40 is formed on the bottom surface sections 41A1 of yoke 41A, and be formed to narrow gradually towards the width of the backoff portion 40 of extraction channel 5, so the lead-out wire 30A being contained in backoff portion 40 is directed to extraction channel 5 by the shape of backoff portion 40, and due to constriction backoff portion 40 gradually, the magnetic density that therefore need not reduce magnetic gap 4G just can suppress the damage of lead-out wire 30A.
Further, in the upper part of extraction channel 5, be formed notch 5A at wall portion 41A2, and the width being formed extraction channel 5 periodically becomes large by notch 5A, thus suppress magnetic flux by the space of extraction channel 5.Thus, suppress to reduce towards the magnetic flux of magnetic gap 4G, and guarantee the sufficient electromagnetic force acting on voice coil loudspeaker voice coil 3.Further, can suppress to produce unnecessary electromagnetic force at the lead-out wire 30A by extraction channel 5.Especially, when forming lead-out wire 30A by 1 wire forming voice coil loudspeaker voice coil 3, because the size of the tone currents by wire is less, so in fact the electromagnetic force acting on lead-out wire 3A becomes smaller, unnecessary vibration is not produced.In addition, by expanding extraction channel 5 by notch 5A, thus lead-out wire 30A can be suppressed to contact with yoke 41A.Further, the notch 5A being formed in the wall portion 41A2 of the yoke 41A that long axis direction extends can have and abuts by a part for framework 10 function framework 10 being fixed on yoke 41A.
Because extraction channel 5 is formed on the discontinuous part of the wall portion 41A2 of yoke 41A, and its discontinuous part is formed on the bight of rectangle yoke 41A, so the extraction channel 5 reduced the impact that the straight line portion as the effective yoke 41A of magnetic gap 4G brings can be formed.
And, because the boundary member at wall portion 41A2 and bottom surface sections 41A1 is formed towards the stage portion 43C of sound equipment radiation direction SD, so the magnetic line of force walking around backoff portion 40 in yoke 41A can be guided to magnetic gap 4G by stage portion 43C along the outside of backoff portion 40.Thereby, it is possible to the impact that minimizing backoff portion 40 is brought magnetic gap 4G.Further, also stage portion 43C can not formed at the boundary member of wall portion 41A2 and bottom surface sections 41A1 as required.When not arranging stage portion 43C, be formed continuously to wall portion 41A2 as the recess 40A of backoff portion 40 or peristome.
Fig. 4 is the key diagram of the lead-out wire that voice coil loudspeaker voice coil is described.This figure (a) is the vertical view observing voice coil loudspeaker voice coil from oscillating plate direction, and this figure (b) is the stereogram observing voice coil loudspeaker voice coil from the direction contrary with oscillating plate.End face 3B shown in this figure (a) is engaged oscillating plate, is formed at end face 3A the lead division 30 that lead-out wire 30A crosses.By drawing lead-out wire 30A from end face 3A side, thus end face 3B becomes smooth.By becoming smooth with the composition surface of oscillating plate 2, thus the cohesive force on adhesive surface can be guaranteed, and a part for oscillating plate 2 need not be made to tilt just can the end face 3B of voice coil loudspeaker voice coil 3 relatively engage.In addition, engage oscillating plate 2 by the smooth end face 3B along voice coil loudspeaker voice coil 3, thus can suppress unnecessary vibration (rolling etc.) occurs, and can suppress contact with magnetic circuit 4 and produce different sound.Thus, positively transmit the vibration of voice coil loudspeaker voice coil 3 to oscillating plate 2, so acoustic characteristic can be improved.
Preferably the extraction position of a pair lead-out wire 30A is drawn, to keep the balance of voice coil loudspeaker voice coil 3 from the position diagonal.Thereby, it is possible to keep the balance of the voice coil loudspeaker voice coil 3 when vibrating, and the unfavorable condition because the inclination of voice coil loudspeaker voice coil 3 in magnetic gap 4G causes can be suppressed.
By forming lead division 30 in end face 3A side, thus become the state that 1 lead-out wire 30A gives prominence to from end face in lead division 30, if this lead division 30 is run into the bottom surface 4A (bottom surface of yoke 41A) of magnetic circuit 4, then the damage brought 1 lead-out wire 30 will become large.
Fig. 5 represents to suppress the damage of bearing of this lead-out wire 30 and the key diagram of the function of backoff portion 40 that is set up.This figure (a) is the vertical view of the state being configured with voice coil loudspeaker voice coil 3 in magnetic gap 4G, and this figure (b), (c) are B-B profile.Be opened in the wall portion 41A2 holded up around bottom surface sections 41A1 in bight in the 1st rectangular-shaped magnetic pole piece 41 (yoke 41A) and be formed with extraction channel 5.Backoff portion 40 is for being formed on the recess 40A in the bight of the bottom surface sections 41A1 of yoke 41A, and the front end of its recess 40A attenuates and continuously in extraction channel 5.
With regard to regard to the derivative lead-out wire 30A of voice coil loudspeaker voice coil 3, coiled electrical conductor and be formed voice coil loudspeaker voice coil 3, and formed by the prolongation of its wire, drawn at 2 positions respectively from the inner and outer of voice coil loudspeaker voice coil.In Fig. 5 (a), coordinate with the bight of yoke 41A and drawn lead-out wire 30A from a position, 2 diagonal.On right side, derivative lead-out wire 30A (R) is directly directed to the outside of yoke 41A by extraction channel 5 by drawing from the outside of voice coil loudspeaker voice coil 3, in left side, derivative lead-out wire 30A (L) formed crosses the lead division 30 being positioned at the end face 3A of the opposition side of oscillating plate side of voice coil loudspeaker voice coil, is directed to the outside of yoke 41A from the top of backoff portion 40 by extraction channel 5.
The prolongation of lead-out wire 30A owing to being voice coil loudspeaker voice coil 3, so few by the electromagnetic force putting on the electric current flowing to 1 lead-out wire 30A compared with the voice coil loudspeaker voice coil 3 tied with wire.Therefore, even if by magnetic flux between extraction channel 5, the electromagnetic force putting on lead-out wire 30A also brings harmful effect to the vibration of voice coil loudspeaker voice coil 3 hardly.Further, also the electromagnetic force because putting on lead-out wire 30A is caused hardly and lead-out wire 30A itself vibrates and be contacted with the such unfavorable condition of yoke 41A.
Fig. 5 (b) represents the state of end face 3A away from bottom surface 4A of voice coil loudspeaker voice coil 3, and this figure (c) represents the state that the end face 3A of voice coil loudspeaker voice coil 3 abuts with bottom surface 4A.As shown in the figure, even if the end face 3A of voice coil loudspeaker voice coil 3 abuts with bottom surface 4A, the compressing can not born from bottom surface 4A in the recess 40A that the lead-out wire 30A of lead division 30 is contained in backoff portion 40 or impact.Thereby, it is possible to suppress when the drop impact of speaker unit 1A or the large amplitude of voice coil loudspeaker voice coil 3 time lead-out wire 30A be damaged.
Fig. 6 ~ Fig. 8 is the integrally-built vertical view except oscillating plate of the speaker unit represented involved by embodiments of the present invention.Speaker unit 1A shown in Fig. 6 has rectangular-shaped magnetic circuit 4 as described above and rectangular-shaped framework 10.Aforesaid part is added same-sign and is omitted repeat specification.In this speaker unit 1A, remaining long portion Lo is formed by the lead-out wire 30A of extraction channel 5, so that the periphery of curling magnetic circuit 4, all the other long portion Lo are supported by bearing portion 14 of drawing money on credit more than being erected in framework 10, and the end of lead-out wire 30A is connected to the splicing ear 50,51 in the framework 10 that links with signal input terminal 13.In addition, bearing portion of drawing money on credit more than 14 can not be arranged at framework 10 as required yet.
Speaker unit 1B shown in Fig. 7 has rectangular-shaped magnetic circuit 4 as described above and rectangular-shaped framework 10.Aforesaid part is added same-sign and is omitted repeat specification.In this speaker unit 1B, the 1st magnetic pole piece 41 (yoke 41A) has line part, is formed with backoff portion 40 and extraction channel 5 near the mid portion of its line part.And, remaining long portion Lo is formed by the lead-out wire 30A of extraction channel 5, so that the periphery of curling magnetic circuit 4, all the other long portion Lo are supported by bearing portion 14 of drawing money on credit more than being erected in framework 10, and the end of lead-out wire 30A is connected to the splicing ear 50,51 in the framework 10 that links with signal input terminal 13.In addition, bearing portion of drawing money on credit more than 14 can not be arranged at framework 10 as required yet.
Speaker unit 1C shown in Fig. 8 has the magnetic circuit 4 of circle (or oval) shape and the framework 10 of circular (or oval) shape.Aforesaid part is added same-sign and omits repeat specification.In this speaker unit 1C, the 1st magnetic pole piece 41 (yoke 41A) has curve part, has been formed backoff portion 40 and extraction channel 5 near the mid portion of its curve part.And, remaining long portion Lo is formed by the lead-out wire 30A of extraction channel 5, so that the periphery of curling magnetic circuit 4, all the other long portion Lo are supported by bearing portion 14 of drawing money on credit more than being erected in framework 10, and the end of lead-out wire 30A is connected to the splicing ear 50,51 in the framework 10 that links with signal input terminal 13.In addition, bearing portion of drawing money on credit more than 14 can not be arranged at framework 10 as required yet.
Fig. 9 is the key diagram of the speaker unit represented involved by other execution modes of the present invention.In speaker unit 1D, magnetic gap 4G is configured to all shapes, and the 1st magnetic pole piece 43 comprising magnetite 43B is formed in the outside of the magnetic gap 4G being configured to all shapes, the 2nd magnetic pole piece 44 with central portion 45 is formed in the inner side of magnetic gap 4G, be formed extraction channel 5 at the 2nd magnetic pole piece 44, lead-out wire 30A is drawn to central portion 45 by this extraction channel 5.
The 1st magnetic pole piece 43 being positioned at the outside of magnetic gap 4G has thin plate 43A and magnetite 43B, and the 2nd magnetic pole piece 44 being positioned at the inner side of magnetic gap 4G is made up of the yoke 44A with bottom 44A1, wall portion 44A2 and central opening 45.That is, the magnetic circuit 4 in speaker unit 1D is external magnetic type.
Be formed extraction channel 5 in the discontinuous part of the wall portion 44A2 of yoke 44A, the backoff portion 40 (recess 40A) continuously in this extraction channel 5 is formed on bottom 44A1.The lead-out wire 30A being drawn to the inner side of magnetic circuit 4 by extraction channel 5 is connected to the splicing ear 50,51 that the central portion 45 in the inner side being formed on magnetic circuit 4 configures.The speaker unit 1D possessing the magnetic circuit 4 of such external magnetic type also has and aforesaid speaker unit 1, function that 1A, 1B, 1C are identical.
Fig. 6 to Fig. 8 represents the magnetic circuit of so-called internal magnetic type, the magnetic circuit of so-called external magnetic type shown in Fig. 9, but be not limited thereto, such as can use the magnetic circuit of double magnetic type, in Fig. 6 to Fig. 8, the bottom surface sections 41A1 or wall portion 41A2 of yoke 41A are configured outside magnetite and the outside thin plate of the ring-type of surrounding magnetite 42B and thin plate 42A, between outside thin plate and thin plate 42A, are formed magnetic gap 4G.In Fig. 9, the bottom surface sections 44A1 or wall portion 44A2 of yoke 44A are configured inner side magnetite and the inner side thin plate of the ring-type of surrounding magnetite 43B and thin plate 43A, between inner side thin plate and thin plate 43A, are formed magnetic gap 4G.Further, magnetic circuit 4 is the magnetic circuit of internal magnetic type or external magnetic type or double magnetic type, and yoke 41A, 44A also can be so-called frameworks (nonmagnetic material).And, when magnetic circuit 4 is for repulsion type magnetic circuit, in Fig. 6 to Fig. 8,2 magnetites (mutually opposing magnetic pole is identical) of thin plate 42A are seized in configuration on both sides by the arms, and configure 2 magnetites (mutually opposing magnetic pole is identical) of seizing thin plate 43A on both sides by the arms in fig .9.
Figure 10 is the key diagram of the formation example representing extraction channel.This figure (a) represents 1 of extraction channel 5 end view forming example, and this figure (b) is other end views formed representing extraction channel 5.Such as shown in this figure (a), the extraction channel 5 being formed on magnetic circuit 4 can cut point-blank with the upper end a to bottom surface sections 41A1 of the wall portion 41A2 from yoke 41A and terminal is cut into the state formation of rectangle, as shown in this figure (b), also can cut preset distance with the upper end a of the wall portion 41A2 from yoke 41A point-blank towards bottom surface sections 41A1 and terminal is cut into the formation of curvilinear state.
Figure 11 is the key diagram representing the example of drawing the outbound course of lead-out wire from voice coil loudspeaker voice coil.This figure (a) is the vertical view of voice coil loudspeaker voice coil 3, this figure (b) is the enlarged drawing near the winding start position in the wire 30A of the voice coil loudspeaker voice coil 3 shown in this figure (a), and this figure (c) is the enlarged drawing near the winding end position of the wire 30A of the voice coil loudspeaker voice coil 3 shown in this figure (a).In addition, this figure (d) and this figure (e) is the key diagram of the variation representing this figure (b) and the voice coil loudspeaker voice coil shown in this figure (c) respectively.
As shown in Figure 11 (a) ~ (c), voice coil loudspeaker voice coil 3 is defined as a pair lead-out wire 30A relative to the roughly point-symmetric shape of the central point 0 of voice coil loudspeaker voice coil 3.Further, with regard to lead-out wire 30A, due to because of voice coil loudspeaker voice coil 3 from be wound to the center of gravity CG of voice coil loudspeaker voice coil 3 that the wire 31 that terminates winding causes and be in diverse location relative to center 0, so the shape of lead-out wire 30A is defined as the balance that can keep this voice coil loudspeaker voice coil 3.Further, if only watch a pair lead-out wire 30A attentively, then a pair lead-out wire 30A is configured in roughly point-symmetric position mutually, can guarantee the weight balancing of voice coil loudspeaker voice coil 3 as far as possible.
And, with regard to voice coil loudspeaker voice coil 3, as shown in Figure 11 (a) ~ (e), wire 31 reels from the winding start position 31S of rectangular-shaped adjacent corner, and after being only wound around pre-fixing turn (N circle), the winding end position 31E near each portion that it is opposed terminates winding.At this moment, in voice coil loudspeaker voice coil 3, center of gravity CG depart from from the center of voice coil loudspeaker voice coil with from wire 31 winding start position 31S to amount corresponding to the wire 31 of the end position 31E that reels.Because center of gravity CG departs from from the center 0 of voice coil loudspeaker voice coil, so the shape of this lead-out wire 31A is defined as the balance that can keep this voice coil loudspeaker voice coil 3, specifically, as diagram, the position of the position of centre of gravity CG of voice coil loudspeaker voice coil 3 and the bend 30A1 of lead-out wire 30A is defined as clamps by the diagonal DL of voice coil loudspeaker voice coil central point 0 and becomes mutual opposition side.
In the voice coil loudspeaker voice coil 3 of this structure, consider the line density of lead-out wire 30A, the shape of the bend 30A1 of a pair lead-out wire 30A is defined as the balance that can keep voice coil loudspeaker voice coil 3.Thus, by adopting such voice coil loudspeaker voice coil 3, thus the vibration balancing of voice coil loudspeaker voice coil 3 can be kept, and can suppress to reduce tonequality because drawing lead-out wire 30A.
Figure 12 is the key diagram of the speaker unit represented involved by other execution modes of the present invention.Aforesaid part is added same-sign and omits repeat specification.Speaker unit 1E is the key diagram representing Mobyneb loud speaker.Shown in this execution mode, aforesaid speaker unit also can be applied to equally the situation in Mobyneb speaker unit.The profile of illustrated speaker unit is toroidal, but also can be rail type, ellipse, angle-style, polygonal, rectangular-shaped etc., is not particularly limited.
In this loud speaker 1E, if the signal of telecommunication is input to voice coil loudspeaker voice coil 3, then magnetic circuit 4 between voice coil loudspeaker voice coil 3 and magnetic circuit 4 to act on or counteractive principle is vibrated.By the Vibration propagation of magnetic circuit 4 to framework 10, thus whole speaker unit 1E vibrates, and is passed to the electronic equipment using the 1E that has speaker device mounted thereon, the user of such as cell phone apparatus, thus can informs user of incoming call.On the other hand, if the signal of telecommunication is input to voice coil loudspeaker voice coil 3, then also vibrate owing to vibrating 2, so there is sound wave, regeneration sound can also be provided to user.Oscillating plate 2 is vibrated and produces sound wave or magnetic circuit 4 is vibrated and by vibration passing to user, can by inputing to the frequency error factor of the signal of telecommunication of voice coil loudspeaker voice coil 3.
Such speaker unit 1E is identical with aforesaid execution mode, possesses framework 10, is supported in the oscillating plate 2 of framework 10, voice coil loudspeaker voice coil 3 that magnetic circuit 4 is supported in oscillating plate 2.In addition, magnetic circuit 4 is supported in framework 10 by damper 50, is supported freely to vibrate relative to framework 10.Damper 50 such as by metal material etc., the rigid element supporting magnetic circuit 4 freely can be vibrated form.Further, also weight can be installed to adjust the resonance frequency of magnetic circuit 4 at magnetic circuit 4 as required.
Be formed the air vent hole 51 with ft connection in the bottom surface sections of the framework 10 relative with magnetic circuit 4, suppress magnetic circuit 4 cannot vibrate because of the resistance of air, and the temperature of magnetic circuit 4 can be suppressed to become high temperature.
Further, the bottom surface sections 41A1 of the yoke 41A possessed at the magnetic circuit 4 relative with the bottom of voice coil loudspeaker voice coil 3 is formed the recess as backoff portion 40.Identical with aforesaid execution mode, backoff portion 40 also can be used as recess or peristome is formed.
In addition, when for this execution mode, when to user's transmitting vibrations, magnetic circuit 4 or framework 10 vibrate, but as (when producing sound) during speaker unit performance function, because magnetic circuit 4 and framework 10 Relative Vibration plate 2 and voice coil loudspeaker voice coil 3 become the state of geo-stationary, so magnetic circuit 4 or framework 10 still become stationary part.
Figure 13 is the key diagram of the electronic equipment representing the speaker unit possessed involved by embodiments of the present invention.Electronic equipment 200 electronic equipment 100 mobile phone as shown in this figure (a) or the portable terminal device as shown in this figure (b) (pocket pc) adopts the speaker unit 1 involved by embodiments of the present invention, thus also can suppress the reduction of sound equipment performance when drop impact.Further, while such resistance to impact can be maintained, good sound equipment performance is played.Further, also can be installed on the ceiling etc. of automobile as required, the speaker unit involved by embodiments of the present invention is equipped on automobile.
Above, with reference to accompanying drawing, embodiments of the present invention are described in detail, but concrete structure is not limited to these execution modes, uses and be formed the speaker unit of flat voice coil loudspeaker voice coil etc., the change etc. of design that do not depart from the scope of present inventive concept is also contained in the present invention.Further, as long as above-mentioned each execution mode does not have special contradiction or problem in its object and structure etc., just can flow and use and combine mutual technology.
Claims (12)
1. a small speaker devices, is characterized in that, this miniature loudspeaker has:
Stationary part;
Oscillating plate, it is supported in described stationary part;
Voice coil loudspeaker voice coil, it is engaged in described oscillating plate directly or indirectly; And
Lead-out wire, its being drawn with a part for described oscillating plate opposite side from described voice coil loudspeaker voice coil.
2. small speaker devices according to claim 1, is characterized in that,
Described lead-out wire being drawn with the end of described oscillating plate opposite side from described voice coil loudspeaker voice coil.
3. small speaker devices according to claim 1 and 2, is characterized in that,
Described oscillating plate has edge part,
Described edge part is concavity relative to sound equipment radiation direction.
4. small speaker devices according to claim 1 and 2, is characterized in that,
Described oscillating plate has center vibration portion,
Described center vibration portion is plane.
5. small speaker devices according to claim 1 and 2, is characterized in that,
This small speaker devices also has:
Magnetic circuit; And
Support the framework of described magnetic circuit,
Hole is there is in the bottom of described framework.
6. small speaker devices according to claim 1 and 2, is characterized in that,
Described voice coil loudspeaker voice coil is directly engaged in described oscillating plate.
7. small speaker devices according to claim 4, is characterized in that,
Described center vibration portion is provided with strengthening part.
8. small speaker devices according to claim 5, is characterized in that,
Described magnetic circuit has magnetic pole piece, and described magnetic pole piece is provided with extraction channel,
The lead-out wire of described voice coil loudspeaker voice coil has been drawn from described extraction channel.
9. small speaker devices according to claim 8, is characterized in that,
Described lead-out wire passes through described extraction channel, long portion more than formation around described magnetic circuit.
10. small speaker devices according to claim 1 and 2, is characterized in that,
Lead-out wire being drawn with the end of described oscillating plate opposite side from described voice coil loudspeaker voice coil of described voice coil loudspeaker voice coil.
11. small speaker devices according to claim 1 and 2, is characterized in that,
Described small speaker devices is the miniature loudspeaker of mobile information apparatus.
12. small speaker devices according to claim 11, is characterized in that,
Described small speaker devices is the miniature loudspeaker of portable phone.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410657911.1A CN104581561A (en) | 2009-01-30 | 2009-01-30 | Small loudspeaker device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410657911.1A CN104581561A (en) | 2009-01-30 | 2009-01-30 | Small loudspeaker device |
Related Parent Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN200980155629.0A Division CN102308595B (en) | 2009-01-30 | 2009-01-30 | Speaker device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104581561A true CN104581561A (en) | 2015-04-29 |
Family
ID=53096581
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410657911.1A Pending CN104581561A (en) | 2009-01-30 | 2009-01-30 | Small loudspeaker device |
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| Country | Link |
|---|---|
| CN (1) | CN104581561A (en) |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2003037895A (en) * | 2001-07-26 | 2003-02-07 | Matsushita Electric Ind Co Ltd | Speaker |
| CN1579110A (en) * | 2002-09-04 | 2005-02-09 | 松下电器产业株式会社 | Yoke of speaker |
| CN201025732Y (en) * | 2007-03-09 | 2008-02-20 | 富港电子（东莞）有限公司 | Loudspeaker |
| CN101227767A (en) * | 2008-01-29 | 2008-07-23 | 歌尔声学股份有限公司 | Minitype moving-coil type electro-acoustic conversing device |
-
2009
- 2009-01-30 CN CN201410657911.1A patent/CN104581561A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2003037895A (en) * | 2001-07-26 | 2003-02-07 | Matsushita Electric Ind Co Ltd | Speaker |
| CN1579110A (en) * | 2002-09-04 | 2005-02-09 | 松下电器产业株式会社 | Yoke of speaker |
| CN201025732Y (en) * | 2007-03-09 | 2008-02-20 | 富港电子（东莞）有限公司 | Loudspeaker |
| CN101227767A (en) * | 2008-01-29 | 2008-07-23 | 歌尔声学股份有限公司 | Minitype moving-coil type electro-acoustic conversing device |
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