CN102082986A - Voice coil and electrodynamic speaker using same - Google Patents
Voice coil and electrodynamic speaker using same Download PDFInfo
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- CN102082986A CN102082986A CN2009102263640A CN200910226364A CN102082986A CN 102082986 A CN102082986 A CN 102082986A CN 2009102263640 A CN2009102263640 A CN 2009102263640A CN 200910226364 A CN200910226364 A CN 200910226364A CN 102082986 A CN102082986 A CN 102082986A
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Abstract
The invention provides a voice coil and an electrodynamic speaker. The electrodynamic speaker uses the tabulate voice coil in scroll direction vertical to the vibrating direction of a speaker vibration plate and is long and thin with short diameter being smaller than the long diameter. The electrodynamic speaker has superior voice reproduction capacity and is suitable for being mounted on equipment such as a display. The voice coil is formed by bonding end surfaces of the first and second coils as the tabulate hollow coils by way of making the first coil and second coils consistent with respective scrolls and connecting the bonded first and second coils in series or in parallel by way of flowing voice signal current in a same direction. The hollow coil is formed by winding the flat wire in multiple layers in a non-staggered manner relative to the scrolls and comprises a reinforcing board which is accommodated in an internal peripheral space regulated by an internal peripheral end part formed by bonding the first and second coils. The internal peripheral end part is matched with the external peripheral end part.
Description
Technical field
The present invention relates to a kind of minor axis direction ratio major diameter direction short longilineal voice coil loudspeaker voice coil and dynamic speaker.It is superior particularly to relate to a kind of audio reproduction ability, is fit to be installed on the voice coil loudspeaker voice coil on the equipment such as display and uses the dynamic speaker of this voice coil loudspeaker voice coil.
Background technology
In the past, in the stereo set of the display that the loud speaker that sound is reproduced is installed etc., required to install loud speaker needed space miniaturization.Particularly, in seeking longilineal dynamic speaker, because the structure of magnetic circuit is made elongated shape and had restriction.In addition, the dynamic speaker of elongated shape (rectangle, Long Circle (comprising ellipse, runway shape)), when utilizing the oscillating plate area the high loud speaker of magnetic flux density limited, magnetic gap used magnetic circuit on the minor axis direction, the width of magnetic circuit is wideer than speaker diaphragm, can not realize miniaturization, because there is disadvantage in above a variety of causes on the audio reproduction ability.Therefore, various loud speakers are used magnetic circuit with magnetic circuit and this loud speaker of use dynamic speaker was proposed in the past in order to address these problems.
In the past, in order to realize the slimming of dynamic speaker, have possessing the loud speaker of the tabular actuating force conducting parts that is formed with voice coil loudspeaker voice coil.For example has such loud speaker, promptly, comprise framework, be fixed on the magnetic circuit on the described framework, being fixed on oscillating plate on the described framework in the mode of vibrating on the prescribed direction, the damper of actuating force conducting parts that combines with described oscillating plate and the described actuating force conducting parts of supporting, described magnetic circuit configurations is between first plane and second plane, described first plane is defined as parallel with described oscillating plate and contacts the plane of at least a portion of described magnetic circuit, described second plane is defined as parallel with described oscillating plate and contacts the plane of at least a portion of described magnetic circuit, described actuating force conducting parts has the zone that is formed with voice coil loudspeaker voice coil, the actuating force of the described prescribed direction that the effect of the magnetic flux that described actuating force conducting parts will provide by the electric current that flows into described voice coil loudspeaker voice coil with by described magnetic circuit produces passes to described oscillating plate, one end of described oscillator combines with described actuating force conducting parts on the position between described first plane and described second plane, and the other end of described oscillator combines (patent documentation 1) with described framework on the position between described first plane and described second plane.
In addition, as loud speaker with the tabular actuating force conducting parts that is formed with voice coil loudspeaker voice coil, for example have such plane and drive loud speaker, promptly, by the plane vibration plate, make the face direction be installed in the back side of this plane vibration plate and constitute with the plane drive plate that is formed with coil with to the magnet that the coil of this drive plate applies magnetic field along direction of vibration, this drive plate is the printing distributing board (with reference to patent documentation 2) that printing forms coil.
In addition, square dynamic loudspeaker is also arranged, promptly, do not have tabular actuating force conducting parts, central portion at rectangle or oblong oscillating plate, have the voice coil loudspeaker voice coil that the flatwise coil of opposed linearity two sides forms and the linearity side of one side is engaged with oscillating plate, dispose magnetic circuit (with reference to patent documentation 3) in the magnetic flux mode vertical that links with this voice coil loudspeaker voice coil with the coil flat horizontal surface in the mode vertical in fact with respect to this oscillating plate.Perhaps, has such speaker unit, promptly, be provided with: the oscillating plate that can be supported quiveringly on the prescribed direction, with the vertical direction of the direction of vibration of above-mentioned oscillating plate on mutually arranged opposite pair of magnets and be the voice coil loudspeaker voice coil that the spool direction is reeled with the direction parallel with the mutually opposed direction of above-mentioned pair of magnets, the electric current of above-mentioned voice coil loudspeaker voice coil is engaging with above-mentioned oscillating plate with part that the vertical direction of said reel direction and above-mentioned direction of vibration flows, and electric current is in the mobile part of other direction and above-mentioned pair of magnets arranged opposite (with reference to patent documentation 4) mutually.
Patent documentation 1: No. 3891481 communique of Japan Patent (Fig. 1～Figure 11)
Patent documentation 2: Japan is real to open clear 58-48194 communique (Fig. 1～Fig. 3)
Patent documentation 3: Japan is real to open clear 59-189398 communique (Fig. 1～Fig. 3)
Patent documentation 4: TOHKEMY 2007-129665 communique (Fig. 1～Fig. 9)
But, in the short longilineal dynamic speaker of minor axis direction ratio major diameter direction, comprise under the situation of the tabular coil that disposes in the spool direction of the coil mode vertical with the direction of vibration of speaker diaphragm, for example have under the situation of the such tabular actuating force conducting parts of above-mentioned patent documentation 1, the weight that is easy to generate speaker vibration system increases and the magnetic flux density of the magnetic gap of linearity reduces, as the problems such as reproduction energy rate reduction of the loud speaker that reproduces sound.On the other hand, for example do not have under the situation of the such tabular actuating force conducting parts of above-mentioned patent documentation 4, there is such problem, that is, and to the actuating force of the partial action on the magnetic gap of the magnetic circuit that is configured in flatwise coil, because the rigidity deficiency of flatwise coil, can not fully pass to the speaker diaphragm that engages with flatwise coil, high pass cut off frequency reduces, and can not guarantee sufficient audio reproduction frequency band, as a result, become the relatively poor dynamic speaker of audio reproduction ability.
Summary of the invention
The present invention researches and develops for the problem that solves above-mentioned prior art and have, its purpose is to provide a kind of voice coil loudspeaker voice coil and dynamic speaker, this dynamic speaker is to use flat coil and the short elongated shape dynamic speaker of minor axis direction ratio major diameter direction with spool direction vertical with respect to the direction of vibration of speaker diaphragm, the audio reproduction ability is outstanding, is fit to be installed on the equipment such as display.
Voice coil loudspeaker voice coil of the present invention, by will as first coil of flat hollow coil and second coil with the consistent mode of spool separately will be separately bonded to each other formation of coil end face, and by with the mode that on same direction, flows with the voice signal electric current of bonding first coil and second coil be connected in series or be connected in parallel and constitute, this hollow coil is by forming lenticular wire with respect to the spool multilayer-wound of pretty good turning up the soil, comprise stiffener, it is housed in the bonding and interior all spaces of interior all ends defined of forming of first coil and second coil, and the peripheral end of this stiffener cooperates with interior all ends.
Voice coil loudspeaker voice coil of the present invention, by will as first coil of flat hollow coil and second coil with the consistent mode of spool separately will be separately bonded to each other formation of coil end face, and by with the mode that on same direction, flows with the voice signal electric current of bonding first coil and second coil be connected in series or be connected in parallel and constitute, this air core coil is by forming lenticular wire with respect to the spool multilayer-wound of pretty good turning up the soil, comprise stiffener, its peripheral end and bonding first coil and second coil and interior all ends of forming cooperate, the thickness of this stiffener is littler than the voice coil loudspeaker voice coil gauge of the thickness defined that is formed by bonding first coil and second coil.
Voice coil loudspeaker voice coil of the present invention, interior all ends of second coil have the big internal diameter size of internal diameter size than interior all ends of first coil, bonding first coil and second coil and interior all ends of the voice coil loudspeaker voice coil that forms comprise the cooperation stage portion that stiffener cooperates.
Preferably, voice coil loudspeaker voice coil of the present invention, the coiling of interior all ends of the flat hollow coil of second coil by will be identical with first coil turn forms more than reducing by 1 circle, and interior all ends of second coil have the big internal diameter size of internal diameter size than interior all ends of first coil.
More preferably, voice coil loudspeaker voice coil of the present invention, stiffener comprises the cooperation stage portion that cooperates stage portion to cooperate with interior all ends of voice coil loudspeaker voice coil at its peripheral end.
In addition, voice coil loudspeaker voice coil of the present invention, stiffener is formed by resin or nonmagnetic metal.
Preferably, voice coil loudspeaker voice coil of the present invention, first coil and second coil form and comprise the run-track shaped of one group of line part and one group of arc sections or comprise the rectangular-shaped of two groups of line parts, and the peripheral end of stiffener comprises the one group of line part that cooperates with one group of line part of first coil and second coil at least.
Dynamic speaker of the present invention comprises: above-mentioned voice coil loudspeaker voice coil; Speaker diaphragm with the voice coil loudspeaker voice coil binding; Magnetic circuit with magnetic gap of the linearity that disposes voice coil loudspeaker voice coil; Framework with the magnetic circuit binding; Be fixed on the edge of the peripheral end that supports speaker diaphragm on the framework with peripheral end.
Preferably, dynamic speaker of the present invention, the damper that perimembranous and voice coil loudspeaker voice coil binding, peripheral part and framework or magnetic circuit link in also comprising.
Below, effect of the present invention is described.
Voice coil loudspeaker voice coil of the present invention be with as two first coils of flat hollow coil and second coil with the consistent mode of spool separately will be separately the bonded to each other and voice coil loudspeaker voice coil that forms of coil end face, the lenticular wire (comprise square line (angle Line), square line (true four jiao Lines), rectangular lines (エ Star ジ ワ イ ズ Line)) of this hollow coil by will having rectangular section forms with respect to the spool multilayer-wound of pretty good turning up the soil.First coil and second coil bonding by bonding agent or paint vehicle etc. are connected in series or are connected in parallel in voice signal electric current mobile mode on same direction.Therefore, voice coil loudspeaker voice coil of the present invention forms the thin tabular of twice degree that thickness is the thickness size of lenticular wire.Though lenticular wire is had the problem of independent crooked easy deformation separately with respect to spool first coil and second coil that multilayer-wound forms of pretty good turning up the soil, but it is as voice coil loudspeaker voice coil of the present invention that voice coil loudspeaker voice coil end face separately is bonded to each other, then can prevent distortion, keep smooth tabular.
Its overall dimensions of voice coil loudspeaker voice coil forms longilineal run-track shaped or rectangular-shaped, and its part is configured in the magnetic gap of linearity of magnetic circuit, then can realize the longilineal dynamic speaker that minor axis direction ratio major diameter direction is short.In addition, the framework that dynamic speaker of the present invention has the speaker diaphragm that links with voice coil loudspeaker voice coil, link with magnetic circuit and on framework, fix the edge that its peripheral end supports the peripheral end of speaker diaphragm, preferably, perimembranous and voice coil loudspeaker voice coil link in being provided with, the damper that peripheral part and framework or magnetic circuit link.
As first coil of flat hollow coil and second coil since form run-track shaped or rectangular-shaped, so they are bonding and voice coil loudspeaker voice coil that constitute has the bonding and interior all spaces of interior all ends defined of forming of first coil and second coil.Voice coil loudspeaker voice coil of the present invention comprises and is housed in the stiffener that all spaces in this and peripheral end cooperate with interior all ends.The thickness of the stiffener of this voice coil loudspeaker voice coil is littler than the voice coil loudspeaker voice coil gauge of the thickness defined that is formed by bonding first coil and second coil, and is not outstanding from interior all spaces.That is, stiffener specific adhesion first coil of this voice coil loudspeaker voice coil and the gauge of the voice coil loudspeaker voice coil that second coil forms are little, so interior all spaces of stipulating from interior all ends of voice coil loudspeaker voice coil are not accommodated wherein highlightedly, voice coil loudspeaker voice coil are strengthened.Voice coil loudspeaker voice coil forms and comprises the run-track shaped of one group of line part and one group of arc sections or comprise any shape in two groups of line parts rectangular-shaped, and the peripheral end of stiffener comprises the one group of line part that cooperates with one group of line part of first coil and second coil at least.
Therefore, in the voice coil loudspeaker voice coil of the present invention, can improve rigidity by this stiffener is set, the actuating force that acts on the part in the magnetic gap of the magnetic circuit that is configured in voice coil loudspeaker voice coil fully passes to the speaker diaphragm that links with voice coil loudspeaker voice coil.Its result uses the dynamic speaker of this voice coil loudspeaker voice coil can improve high pass cut off frequency, guarantees wide audio reproduction frequency band.In addition, stiffener is formed by resin or nonmagnetic metal, can realize with the volume of the minimum in all spaces in can being housed in, so can realize lightweight, in addition, needn't form the wide size of magnetic gap size, so can guarantee high magnetic flux density than the linearity of the gauge that is suitable for voice coil loudspeaker voice coil.Therefore, can improve the audio reproduction energy rate, form the superior dynamic speaker of audio reproduction ability.In addition, stiffener be owing to can improve the rigidity of voice coil loudspeaker voice coil, can be not crooked and the advantage of distortion so have flat voice coil loudspeaker voice coil.
In addition, in the voice coil loudspeaker voice coil of the present invention, run-track shaped or rectangular-shaped interior all ends can comprise the cooperation stage portion that stiffener cooperates.Specifically, if interior all ends of second coil have the big internal diameter size of internal diameter size of interior all ends of first coil of specific adhesion, then all within it ends form the cooperation stage portion that stiffener cooperated.Coiling in the interior all end of second coil by making the flat hollow coil identical with first coil turn reduces under the situation about forming more than 1 circle, can form the cooperation stage portion that stiffener cooperates by the difference based on the internal diameter size of the difference of these numbers of turn.
In addition, the stiffener of voice coil loudspeaker voice coil of the present invention can contain the cooperation stage portion that cooperates stage portion to cooperate with interior all ends of voice coil loudspeaker voice coil at its peripheral end.Having the stiffener that cooperates stage portion at peripheral end can be by easily forming with ester moulding or with nonmagnetic metal drawings such as aluminium etc.Have the stiffener that cooperates stage portion owing to all cooperate at peripheral end,, further improve rigidity so can improve the installation accuracy of stiffener with interior all ends of first coil and interior all ends of second coil.Therefore, voice coil loudspeaker voice coil of the present invention can be obtained the raising of reproduction energy rate of the dynamic speaker that uses this voice coil loudspeaker voice coil and the balance of thin-long, can realize reproducing the outstanding dynamic speaker of tonequality.
The invention effect
The present invention can provide a kind of use to have the dynamic speaker of the tabular coil of the spool direction vertical with respect to the direction of vibration of speaker diaphragm, particularly, have that lenticular wire is pretty good turned up the soil multilayer-wound with respect to the spool direction and the short elongated shape dynamic speaker of the run-track shaped coil that forms and minor axis direction ratio major diameter direction, its audio reproduction ability is superior, is fit to be installed on loud speaker on the equipment such as display with magnetic circuit and dynamic speaker.
Description of drawings
Fig. 1 is the figure of the dynamic speaker 1 of explanation preferred implementation of the present invention.(embodiment 1)
Fig. 2 is the local amplification profile of structure of the dynamic speaker 1 of explanation preferred implementation of the present invention.(embodiment 1)
Fig. 3 is the figure of the voice coil loudspeaker voice coil 4 of explanation preferred implementation of the present invention.(embodiment 1)
Fig. 4 is the profile of structure of the voice coil loudspeaker voice coil 4A of explanation another preferred implementation of the present invention.(embodiment 2)
Fig. 5 is the profile of structure of the voice coil loudspeaker voice coil 4B of explanation another preferred implementation of the present invention.(embodiment 3)
Fig. 6 is the profile of the voice coil loudspeaker voice coil 40 of explanation comparative example.(comparative example)
Fig. 7 is to use the curve chart of sound pressure frequency characteristic of dynamic speaker of voice coil loudspeaker voice coil 40 of voice coil loudspeaker voice coil 4A, the comparative example of embodiment.(embodiment 2, comparative example).
1 dynamic speaker
2 speaker diaphragms
3 edges
4,4A, 4B, 40 coils
41,41a coil
42,42a coil
43,43a, 43b stiffener
5 dampers
6 frameworks
10 magnetic circuits
11,12 yokes
13 magnets
Embodiment
Below, voice coil loudspeaker voice coil and dynamic speaker preferred embodiment of the present invention described, but the present invention is not limited to these execution modes.
(embodiment 1)
Fig. 1 and Fig. 2 are the figure of the dynamic speaker 1 of explanation preferred implementation of the present invention.In addition, Fig. 3 is the figure of the voice coil loudspeaker voice coil 4 of explanation preferred implementation of the present invention.Specifically, Fig. 1 is a stereogram of observing dynamic speaker 1 from front face side, and Fig. 2 is the partial enlarged drawing of section of the minor axis direction of dynamic speaker 1.Fig. 3 (a) is a side view of observing voice coil loudspeaker voice coil 4 from the minor axis direction, and Fig. 3 (b) is the C-C ' profile of voice coil loudspeaker voice coil 4, and Fig. 3 (c) is the stereogram of voice coil loudspeaker voice coil 4, and Fig. 3 (d) is the expanded view of the structure of explanation voice coil loudspeaker voice coil 4.In addition, as described later, omissions such as the structure of the part of dynamic speaker 1 and internal structure.In addition, the direction that the straight line of point of contact A-O-A ' (major axis) extends is the major diameter direction, and in addition, the direction that the straight line of point of contact B-O-B ' (minor axis) extends is the minor axis direction.
The dynamic speaker 1 of present embodiment is the longilineal dynamic speaker of the speaker diaphragm 2 of runway shape with major diameter direction length L 1 about 135.6mm, minor axis direction length L 2 about 10mm, though be elongated shape, also have the oscillating plate area equal with the circular vibration plate of the about 35mm of bore.In its outer circumference end supporting, the outer circumference end at edge 3 is fixed on the framework 6 speaker diaphragm 2 by edge 3.In addition, linking coil 4 at the central portion of speaker diaphragm 2 from rear side, coil 4 is fixed on damper 5 supportings on the framework 6 by outer circumferential side and can vibrates.The coil 4 of present embodiment is the coil of runway shape, is the flat coil that has the spool direction on the direction of the direction of vibration approximate vertical of vibrating with respect to speaker diaphragm 2.In addition, framework 6 is the elongated shape corresponding with the speaker diaphragm 2 of runway shape, is housed on the framework 6 and the elongated shape that fixing magnetic circuit 10 also has the narrow width of minor axis direction length L below 2.Therefore, dynamic speaker 1 is the little equipment of width that is suitable for the installation loud speakers such as side of the display parts that equipment had such as display.Rear side at framework 6 is installed (not shown) joint 7 of supplying with the voice signal electric current, and the part of magnetic circuit 10 is exposed.
The speaker diaphragm 2 of dynamic speaker 1 is in interior all sides of its outer circumference end bonded edge 3, in addition, the back side in the central, a side's of run-track shaped coil 4 described later line part 4b inserts slot-shaped linking part and thereon bonding by bonding agent.The hot castable resin that speaker diaphragm 2 will bubble for the lightweight that realizes speaker diaphragm is shaped and constitutes.Under the situation of present embodiment, the hot castable resin foaming sheet material that is extruded mould-forming (specifically, the polystyrene sheet material) by adopting and used the vacuum forming method of plug forming (プ ラ グ ア シ ス ト shaping), obtains having concavo-convex speaker diaphragm 2.Promptly, major diameter direction length L 1 and minor axis direction length L 2 remarkable different longilineal speaker diaphragms 2, because the influence of cutting apart vibration of major diameter direction becomes remarkable easily, comprise the roughly shape of U font so minor axis directional profile shape formed, form the major diameter direction and have rigid shape.
In the run-track shaped coil 4 of bonding coil 41 and 42, form a side line part 4a, the opposing party's line part 4b, a side arc sections 4c and the opposing party's arc sections 4d, form interior all space 4f as run-track shaped hole in interior all side of run-track shaped interior all end 4e.Therefore, in coil 4, the peripheral end 43e that is housed in the stiffener 43 of all space 4f in this cooperates with run-track shaped interior all end 4e.The peripheral end 43e of stiffener 43 cooperates with run-track shaped interior all end 4e of coil 4 and is bonding by bonding agent.Promptly, the peripheral end 43e of stiffener 43 cooperates with the inner peripheral surface of the coiling of interior all sides of coil 41 and 42.The stiffener 43 of present embodiment is the aluminium sheet of the about 0.4mm of thickness 43t, is the runway shape of the about 31.5mm of major diameter direction length, the about 3.5mm of minor axis direction length.The thickness 43t of stiffener 43 is because the voice coil loudspeaker voice coil gauge 4t of the thickness defined that specific adhesion coil 41 and 42 forms is little, so stiffener 43 is not outstanding from interior all space 4f of coil 4.Stiffener 43 be owing to can improve the rigidity of coil 4, so suppress the such distortion that bends of flat coil 4.In addition, stiffener 43 can be made of nonmagnetic metal such as copper, duralumin or aluminium alloys, but also can be formed by synthetic resin such as ABS, PI, PET.
The outside fixed part that damper 5 is provided with notch portion (slotted section) on laminal resin plate, comprise the inboard fixed part that links with coil 4, link with framework 6 and link inboard fixed part and the damper of the movable part of the arm shape of outside fixed part.Specifically, the parts that damper 5 forms for the PC resin plate punch process with the about 0.2mm of thickness have the slit that the stiffener 43 of the arc sections 4c that inserts coil 4 or arc sections 4d and coil 4 is fixed at inboard fixed part.Damper 5 links by bonding agent and coil 4 or framework 6.In addition, damper 5 can be the damper that the resin injection molding is constituted, and in addition, can be that base material comes impregnated phenolic resin to be shaped with the fabric with flexible fiber also.
In the dynamic speaker 1 of present embodiment, coil 4 is at the run-track shaped side's of 14 kinds of configurations of magnetic gap of the linearity of magnetic circuit 10 line part 4a, and the opposing party's line part 4b is attached at the central portion of speaker diaphragm 2.In addition, on a side arc sections 4c and the opposing party's arc sections 4d and stiffener 43, link damper 5 described later.In the present embodiment, two the bonding coils 41 that constitute coil 4 are connected in series with 42 modes with the voice signal electric current that flows on identical direction each other in bonding part (a for example side's of a side's of coil 41 line part 4a and coil 42 line part 4a).Certainly, coil 41 and 42 also can be connected in parallel.In addition, the lead (of (not shown) that is connected with coil 4 ?yarn Line) will be fixed on (not shown) joint on the framework 6 and make it conducting from the lead-out wire welding that joint is drawn to coil 4, coil 4 is supplied with acoustic current-meters.Wherein, lead also can be by on speaker diaphragm 2, grommets being set conducting to joint.
When the coil on the dynamic speaker 14 is supplied with the voice signal electric currents, to a side's of the coil 4 in the magnetic gap 14 of the linearity that is disposed at magnetic circuit 10 line part 4a effect actuating force.This coil 4 is engaged in the above-mentioned stiffener 43 between a side line part 4a and the opposing party's the line part 4b by setting, strengthen coil 41 and 42 and improve rigidity.Therefore, act on speaker diaphragm 2 on the line part 4b that actuating force on the part (side's of coil 4 line part 4a) in the magnetic gap 14 of the magnetic circuit 10 that is configured in coil 4 fully passed to the opposing party who is attached at coil 4.Its result uses the dynamic speaker 1 of this coil 4 can improve high pass cut off frequency, guarantees wide audio reproduction frequency band.
In addition, stiffener 43 is made of resin or nonmagnetic metal, owing to can realize with the volume of the minimum in all spaces in being housed in, so can realize lightweight, in addition, needn't be bigger than the magnetic gap size of the linearity of the gauge 4t of suitable coil 4, can guarantee high magnetic flux density.The stiffener 43 of present embodiment is the run-track shaped flat board of handling ease, but also through hole or attenuate can be set, to realize lightweight.Therefore, can improve audio reproduction efficient, form the superior dynamic speaker 1 of audio reproduction ability.
(embodiment 2)
Fig. 4 illustrates that the coil 4 that can replace front embodiment constitutes the figure of another coil 4A of dynamic speakers 1, with the suitable C-C ' profile of Fig. 3 (b) of front embodiment.The coil 4A of present embodiment has structure, the coil 41a that comprise two hollows and 42a and the described later stiffener 43a same with the coil 4 of front embodiment, has the flat coil of being shaped as of roughly the same overall dimension.Wherein, coil 4A is different with the coil 4 of front embodiment on the different this point of size of the peripheral end 43e of thickness 43t, the stiffener 43a of size 42r, the stiffener 43a of interior all ends of the coil 42a of the size 41r of interior all ends of the coil 41a of a side's who forms run-track shaped interior all end 4e hollow, the opposing party's hollow.Therefore, use identical Reference numeral on common part, it illustrates omission.
Coil 4A by bonding agent (perhaps paint vehicle) so that the consistent mode of the spool of coil 41a and 42a will be separately bonded to each other formation of coil end face.The copper strap wire that coil 41a and 42a are of a size of thickness 0.12mm * 0.20mm respectively is with respect to the spool ground multilayer-wound that do not stagger.Run-track shaped its number of turn of coil 41a is about 25 circles, is about 3.5mm as the size 41r of interior all ends of the distance of the interior all space 4f that stipulate between a side line part 4a and the opposing party's line part 4b.In addition, run-track shaped its number of turn of coil 42a of the opposing party is about 22 circles, size 42r as interior all ends of the distance of the interior all space 4f that stipulate between a side line part 4a and the opposing party's line part 4b is about 4.7mm, and the internal diameter size 42r of interior all ends of coil 42a is bigger than the internal diameter size 41r of interior all ends of coil 41a.Coil 42a will be identical with the coil 41a number of turn the number of turn of interior all ends of flat hollow coil reduce by 3 circles and form.Its result, the coil 4A of present embodiment are formed bonding coil 41a and 42a and interior all end 4e of forming comprise the cooperation stage portion that stiffener 43 is cooperated.
Promptly, the cooperation stage portion of interior all end 4e of coil 4A is formed by bonding coil 41a and the internal diameter size 41r of 42a interior all ends separately and the difference in size of 42r.Utilize the identical coil of the number of turn to form under the situation of coil 41a and 42a, can be with the coiling wraparound of interior all ends of a side coil to reduce more than 1 circle.Therefore, as shown in Figure 4, the stiffener 43a that constitutes the coil 4A of present embodiment cooperates interior all end 4e of stage portion to cooperate with comprising of coil 4A.That is, the inner peripheral surface of the coiling of interior all sides of the coil end face of several circles coilings of interior all sides of the peripheral end 43e of stiffener 43a and coil 41a and coil 42b cooperates.
Stiffener 43a is than thin only about half of, the aluminium sheet that thickness 43t is about 0.2mm of formerly comparative example, is the about 31.5mm of major diameter direction length, and minor axis direction length is about the run-track shaped of 4.7mm.Because the thickness of the stiffener 43a of present embodiment is littler than the voice coil loudspeaker voice coil gauge 42t of coil 42a, so stiffener 43a is not outstanding from interior all space 4f of coil 4A.Stiffener 43a is owing to improving the rigidity of coil 4, so suppress flat coil 4 crooked such distortion.In addition, stiffener 43a improves rigidity owing to strengthening coil 41a and 42b, so act on the speaker diaphragm 2 on the line part 4b that actuating force on the line part 4a of the side in the magnetic gap 14 of the magnetic circuit 10 that is configured in coil 4A fully passes to the opposing party who is attached at coil 4A.Its result uses the dynamic speaker 1 of this coil 4A can improve high pass cut off frequency, guarantees wide audio reproduction frequency band.In addition, because stiffener 43a can be thin more only about half of than comparative example formerly, so can further realize lightweight.If can realize comprising the lightweight of the speaker vibration system of coil 4A, then can improve audio reproduction efficient, can realize the outstanding dynamic speaker of audio reproduction ability 1.
(embodiment 3)
Fig. 5 is that explanation can replace the coil 4A of embodiment formerly to constitute the figure of another coil 4B of dynamic speaker 1, is the suitable C-C ' profile of Fig. 4 with formerly embodiment.The coil 4B of present embodiment has structure, the coil 41a that comprise two hollows and 42a and the described later stiffener 43b identical with the coil 4A of formerly embodiment, has the flat coil of being shaped as of roughly the same overall dimension.Wherein, coil 4B different at the size 42r of interior all ends of the coil 42a of the size 41r of interior all ends of the coil 41a of a side's who forms run-track shaped interior all end 4e hollow, the opposing party's hollow, and form in consistent with the coil 4A of formerly embodiment on this aspect of cooperation stage portion of all end 4e.On the other hand, the shape of the stiffener 43b of coil 4B is different with the shape of the stiffener 43a of the coil 4A of embodiment formerly.Therefore, use identical Reference numeral on common part, it illustrates omission.
Stiffener 43b is thin only about half of, the aluminium sheet that thickness 43t is about 0.2mm of the stiffener 43 than formerly comparative example, is the about 31.5mm of major diameter direction length, minor axis direction length is about the run-track shaped of 4.7mm.In addition, stiffener 43b as shown in the figure, comprises the cooperation stage portion that cooperates stage portion to cooperate with interior all end 4e of coil 4B at its peripheral end 43e.Promptly, on the cooperation stage portion of interior all end 4e of the coil 4B of coil 41a that forms two hollows and 42a, cooperating cooperation stage portion on the corresponding peripheral end 43e that is formed on stiffener 43b.Stiffener 43b is owing to form the cooperation stage portion of standing shape on peripheral end 43e, thus with the stiffener 43a of formerly embodiment relatively, can further improve rigidity.
Like this, stiffener 43b is owing to further improve the rigidity of coil 4B, thus can suppress flat coil 4 crooked such distortion, and can strengthen coil 41a and 42b and improve rigidity.Its result in the dynamic speaker 1, acts on the actuating force on a side the line part 4a of the coil 4B in the magnetic gap 14 of the magnetic circuit 10 that is configured in coil 4B, is fully passed to the speaker diaphragm 2 on the opposing party's who is attached at coil 4B the line part 4b.Use the dynamic speaker 1 of coil 4B further to improve high pass cut off frequency, guarantee wide audio reproduction frequency band.
The thickness 43t of the stiffener 43b of present embodiment because can specific adhesion coil 41a and the voice coil loudspeaker voice coil gauge 4t of the thickness defined that forms of 42a little, so the option of the material thickness of stiffener 43b increases, and can realize lightweight simultaneously.Promptly, if as shown in this embodiment, peripheral end 43e at stiffener 43b is provided with the cooperation stage portion, only make the thickness of cooperation stage portion of peripheral end 43e of stiffener 43b littler than the voice coil loudspeaker voice coil gauge 42t of coil 42a, then the thickness 43t of the stiffener 43b of present embodiment can be big from the voice coil loudspeaker voice coil gauge 42t than coil 42a, the little scope of thickness 4t that forms of specific adhesion coil 41a and 42a selects.Like this, stiffener 43b is because outstanding from interior all space 4f of coil 4B, so in dynamic speaker 1b, needn't widen the size of magnetic gap 14 of the linearity of magnetic circuit 10, can guarantee high magnetic flux density.
The figure of the coil 40 of Fig. 6 comparative example that to be explanation corresponding with the coil of formerly embodiment 4.Specifically, Fig. 6 (a) is and the suitable C-C ' profile of Fig. 3 (b) of the embodiment formerly of the coil 40 of comparative example that Fig. 6 (b) is the stereogram of the coil 40 of comparative example.The coil 40 of comparative example compares with the coil 4 of embodiment formerly, is the voice coil loudspeaker voice coil with stiffener 43.Promptly, the coil 40 of comparative example be with form respectively equal turn numbers flat two hollows coil 41 with 42 by bonding agent (perhaps paint vehicle) so that coil 41 mode consistent with the spool of coil 42 will be separately bonded to each other the formation and voice coil loudspeaker voice coil that bonding coil 41 and 42 modes that flow on same direction with the voice signal electric current are connected in series and constitute of coil end face.
Therefore, form interior all space 4f in interior all sides of run-track shaped interior all end 4e of the coil 40 of comparative example as run-track shaped hole.The coil 40 of comparative example is not owing to have the stiffener that improves rigidity, its result, in the dynamic speaker of the coil 40 that uses comparative example, act on the speaker diaphragm 2 on the line part 4b that actuating force on the line part 4a in the magnetic gap 14 of the magnetic circuit 10 that is configured in coil 40 can not fully be passed to the opposing party who is attached at coil 40.
Fig. 7 is to use the curve chart of sound press frequency characteristic of dynamic speaker 1 of the voice coil loudspeaker voice coil 40 of the voice coil loudspeaker voice coil 4A of embodiment and comparative example.Shown in solid line, use the dynamic speaker 1 of the coil 4A of embodiment can improve high pass cut off frequency, guarantee wide audio reproduction frequency band.On the other hand, shown in dotted line, in the dynamic speaker 1 of the voice coil loudspeaker voice coil 40 that uses comparative example, high pass cut off frequency reduces, and produces high peak value near about 6kHz, can not guarantee wide audio reproduction frequency band.
Use the dynamic speaker 1 of coil 4,4A or the 4B of embodiment to be provided with stiffener,, comprise the Stability Analysis of Structures of the vibrational system of speaker diaphragm 2 so the rigidity of voice coil loudspeaker voice coil improves owing to coil.Its result is even the easy unsettled longilineal dynamic speaker of the action of the dynamic speaker of present embodiment 1 vibrational system also can suppress the magnetic gap 14 of voice coil loudspeaker voice coil contact magnetic circuit 10 and produces noise and cause the such problem of action failure.
In coil 4,4A or the 4B of embodiment, it is run-track shaped that interior all end 4e of stiffener 43,43a or 43b and coil run-track shaped forms accordingly.Wherein, stiffener can be line part 4b rectangular-shaped that links a run-track shaped side's line part 4a and the opposing party.Stiffener also can be other the corresponding shapes of shape with interior all ends of coil, and for example under coil was rectangular-shaped situation, the stiffener that further improves rigidity also can be rectangular-shaped.
In addition, in above-mentioned dynamic speaker 1, flat coil 4 can be vibrated by 5 supportings of integrally formed damper, but also can be the damper 5 of other modes.For example, damper 5 can be the damper that the end side of the major diameter direction of coil 4 can be vibrated by the damper 51 of other modes and 52 supportings, and damper 5 can not be provided with under the repressed situation rocking of coil 4 yet.
(utilizability on the industry)
Dynamic speaker of the present invention not only can be as the loudspeaker applications that is built in image, the stereo sets such as display, also can be applied in the game machine such as electronic game machine, vending machine of the casing of the loudspeaker of establishing producing sound in having. In addition, of the present invention have loudspeaker with the dynamic speaker of magnetic circuit owing to can realize speaker system with little, the small-sized and slim casing producing sound of overall width, so be particularly suitable for arranging for motor vehicle loudspeaker of limited space.
Claims (9)
1. voice coil loudspeaker voice coil, by will as first coil of flat hollow coil and second coil with the consistent mode of spool separately will be separately bonded to each other formation of coil end face, and by with the mode that on same direction, flows with the voice signal electric current of bonding this first coil and this second coil be connected in series or be connected in parallel and constitute, described hollow coil is by forming lenticular wire with respect to the described spool multilayer-wound of pretty good turning up the soil
Comprise stiffener, it is housed in the bonding and interior all spaces of interior all ends defined of forming of this first coil and this second coil, and the peripheral end of this stiffener cooperates with described interior all ends.
2. voice coil loudspeaker voice coil, by will as first coil of flat hollow coil and second coil with the consistent mode of spool separately will be separately bonded to each other formation of coil end face, and by with the mode that on same direction, flows with the voice signal electric current of bonding this first coil and this second coil be connected in series or be connected in parallel and constitute, described hollow voice coil loudspeaker voice coil is by forming lenticular wire with respect to the described spool multilayer-wound of pretty good turning up the soil
Comprise stiffener, the peripheral end of this stiffener cooperates with interior all ends that bonding this first coil forms with this second coil, and the thickness of this stiffener is littler than the gauge of this voice coil loudspeaker voice coil of the thickness defined that is formed by bonding this first coil and this second coil.
3. voice coil loudspeaker voice coil as claimed in claim 1 or 2 is characterized in that:
Interior all ends of described second coil have the big internal diameter size of internal diameter size than interior all ends of described first coil, and described interior all ends of the described voice coil loudspeaker voice coil that bonding this first coil forms with this second coil comprise the cooperation stage portion that described stiffener cooperates.
4. voice coil loudspeaker voice coil as claimed in claim 3 is characterized in that:
The coiling of interior all ends of the flat hollow coil of described second coil by will be identical with described first coil turn forms more than reducing by 1 circle, and interior all ends of second coil have the big internal diameter size of internal diameter size than interior all ends of described first coil.
5. as claim 3 or 4 described voice coil loudspeaker voice coils, it is characterized in that:
Described stiffener its described peripheral end comprise with described voice coil loudspeaker voice coil described in the described cooperation stage portion that cooperates stage portion to cooperate of all ends.
6. as each described voice coil loudspeaker voice coil of claim 1～5, it is characterized in that:
Described stiffener is formed by resin or nonmagnetic metal.
7. as each described voice coil loudspeaker voice coil of claim 1～5, it is characterized in that:
Described first coil and described second coil form and comprise the run-track shaped of one group of line part and one group of arc sections or comprise the rectangular-shaped of two groups of line parts, and the described peripheral end of described stiffener comprises the one group of line part that cooperates with this group of line part of this first coil and this second coil at least.
8. dynamic speaker comprises:
As claim 1～7 each described as described in voice coil loudspeaker voice coil;
Speaker diaphragm with this voice coil loudspeaker voice coil binding;
Magnetic circuit with magnetic gap of the linearity that is used to dispose this voice coil loudspeaker voice coil;
Framework with this magnetic circuit binding; With
Peripheral end is fixed on the edge that supports the peripheral end of this speaker diaphragm on this framework.
9. dynamic speaker as claimed in claim 8 is characterized in that:
The damper that perimembranous and described voice coil loudspeaker voice coil binding, peripheral part and described framework or described magnetic circuit link in also comprising.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200910226364.0A CN102082986B (en) | 2009-11-26 | 2009-11-26 | Voice coil and electrodynamic speaker using same |
| JP2010001399A JP5311061B2 (en) | 2009-11-26 | 2010-01-06 | Voice coil and electrodynamic speaker using the same |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200910226364.0A CN102082986B (en) | 2009-11-26 | 2009-11-26 | Voice coil and electrodynamic speaker using same |
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| Publication Number | Publication Date |
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| CN102082986A true CN102082986A (en) | 2011-06-01 |
| CN102082986B CN102082986B (en) | 2015-06-17 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN200910226364.0A Expired - Fee Related CN102082986B (en) | 2009-11-26 | 2009-11-26 | Voice coil and electrodynamic speaker using same |
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| JP (1) | JP5311061B2 (en) |
| CN (1) | CN102082986B (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111200778A (en) * | 2018-11-20 | 2020-05-26 | 乔旸电子股份有限公司 | Thin type loudspeaker with voice coil having wave-bouncing function |
| CN111295890A (en) * | 2017-12-07 | 2020-06-16 | 索尼公司 | Vibration system, speaker apparatus, and video display apparatus |
| CN112040379A (en) * | 2020-09-02 | 2020-12-04 | 瑞声新能源发展(常州)有限公司科教城分公司 | Loudspeaker, voice coil manufacturing method and coil heating device |
| CN112514417A (en) * | 2018-08-07 | 2021-03-16 | 林成珍 | Rectangular flat-plate slim speaker with slim magnetic core |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104811871A (en) * | 2015-04-27 | 2015-07-29 | 协康利电机(深圳)有限公司 | Voice coil and wiring method of voice coil |
| CN112040377B (en) * | 2020-09-02 | 2021-08-31 | 瑞声新能源发展(常州)有限公司科教城分公司 | Loudspeaker, voice coil manufacturing method and coil winding device |
| CN112040378B (en) * | 2020-09-02 | 2021-08-31 | 瑞声新能源发展(常州)有限公司科教城分公司 | Loudspeaker, voice coil manufacturing method and coil winding device |
| CN115278482A (en) * | 2021-04-29 | 2022-11-01 | 高创(苏州)电子有限公司 | Voice coil and loudspeaker |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS4899718U (en) * | 1972-02-25 | 1973-11-24 | ||
| JP4687400B2 (en) * | 2005-11-07 | 2011-05-25 | ソニー株式会社 | Speaker device |
| JP4420104B2 (en) * | 2007-11-02 | 2010-02-24 | オンキヨー株式会社 | Magnetic circuit module, magnetic circuit for speaker, manufacturing method thereof, and speaker using the same |
| CN201336724Y (en) * | 2008-12-19 | 2009-10-28 | 尼开电机(上海)有限公司 | Spiral type chip loudspeaker coil |
| WO2010097930A1 (en) * | 2009-02-26 | 2010-09-02 | パイオニア株式会社 | Voice coil for speaker device, and speaker device |
-
2009
- 2009-11-26 CN CN200910226364.0A patent/CN102082986B/en not_active Expired - Fee Related
-
2010
- 2010-01-06 JP JP2010001399A patent/JP5311061B2/en not_active Expired - Fee Related
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111295890A (en) * | 2017-12-07 | 2020-06-16 | 索尼公司 | Vibration system, speaker apparatus, and video display apparatus |
| CN111295890B (en) * | 2017-12-07 | 2022-03-01 | 索尼公司 | Vibration system, speaker apparatus, and video display apparatus |
| US11789489B2 (en) | 2017-12-07 | 2023-10-17 | Sony Corporation | Vibration system, speaker apparatus and video displaying apparatus |
| CN112514417A (en) * | 2018-08-07 | 2021-03-16 | 林成珍 | Rectangular flat-plate slim speaker with slim magnetic core |
| CN112514417B (en) * | 2018-08-07 | 2022-07-05 | 林成珍 | Rectangular flat-plate slim speaker with slim magnetic core |
| CN111200778A (en) * | 2018-11-20 | 2020-05-26 | 乔旸电子股份有限公司 | Thin type loudspeaker with voice coil having wave-bouncing function |
| CN111200778B (en) * | 2018-11-20 | 2021-08-31 | 乔旸电子股份有限公司 | Thin type loudspeaker with voice coil having wave-bouncing function |
| CN112040379A (en) * | 2020-09-02 | 2020-12-04 | 瑞声新能源发展(常州)有限公司科教城分公司 | Loudspeaker, voice coil manufacturing method and coil heating device |
Also Published As
| Publication number | Publication date |
|---|---|
| JP5311061B2 (en) | 2013-10-09 |
| CN102082986B (en) | 2015-06-17 |
| JP2011114857A (en) | 2011-06-09 |
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