CN102469389A - Diaphragm for electroacoustic transducer and electroacoustic transducer using diaphragm - Google Patents
Diaphragm for electroacoustic transducer and electroacoustic transducer using diaphragm Download PDFInfo
- Publication number
- CN102469389A CN102469389A CN2011103617635A CN201110361763A CN102469389A CN 102469389 A CN102469389 A CN 102469389A CN 2011103617635 A CN2011103617635 A CN 2011103617635A CN 201110361763 A CN201110361763 A CN 201110361763A CN 102469389 A CN102469389 A CN 102469389A
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- Prior art keywords
- oscillating plate
- rib
- electroacoustic transducer
- recessed rib
- voice coil
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
- H04R7/00—Diaphragms for electromechanical transducers; Cones
- H04R7/02—Diaphragms for electromechanical transducers; Cones characterised by the construction
- H04R7/12—Non-planar diaphragms or cones
- H04R7/14—Non-planar diaphragms or cones corrugated, pleated or ribbed
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
- H04R7/00—Diaphragms for electromechanical transducers; Cones
- H04R7/16—Mounting or tensioning of diaphragms or cones
- H04R7/18—Mounting or tensioning of diaphragms or cones at the periphery
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
- H04R2499/00—Aspects covered by H04R or H04S not otherwise provided for in their subgroups
- H04R2499/10—General applications
- H04R2499/15—Transducers incorporated in visual displaying devices, e.g. televisions, computer displays, laptops
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- Engineering & Computer Science (AREA)
- Multimedia (AREA)
- Physics & Mathematics (AREA)
- Acoustics & Sound (AREA)
- Signal Processing (AREA)
- Diaphragms For Electromechanical Transducers (AREA)
- Audible-Bandwidth Dynamoelectric Transducers Other Than Pickups (AREA)
Abstract
The invention provides a diaphragram for an electroacoustic transducer and an electroacoustic transducer using the diaphragram. Accoding to the invention, the resonance mode inside the diaphragram can be dispersed, and the frequency characteristic is stable and smooth. The diaphragram for an electroacoustic transducer is equipped with a plurality of ribs from the inner side of the diaphragram to the periphery of the diaphragram. The plurality of ribs are separated from each other, wherein at least one of the ribs arranged successively along the circumference of the diaphragram is different in terms of the shape, the length, the arrangement and the interval, so that an irregular rib pattern is formed.
Description
Technical field
Use oscillating plate as reasonable tube, the such electroacoustic transducer of loud speaker,, have circular electroacoustic transducer and use oscillating plate with the electroacoustic transducer of oscillating plate or oval (track) shape like Fig. 6, shown in Figure 7.Recently, use electroacoustic transducer, the electroacoustic transducers that adopt the oblong shape of having sought to save the space as slim TV more.
Background technology
But electroacoustic transducers such as microphone, loud speaker produce in the oscillating plate face with oscillating plate has resonance mode (resonant mode), and reason thus, frequency characteristic have produced disorderly (in a jumble).
In the past, in order to address this problem, like Fig. 6, shown in Figure 7, adopt had through on the surface of oscillating plate 100, adding have regularity, symmetric fin or recessed rib 101 improve rigidity, suppress resonance, make the smooth-going method of frequency characteristic.
At this, recessed rib is meant on the oscillating plate face from the front surface side-prominent rib of face of supporting or opposing, and can see as groove during surface observation when the past.Fin is meant from the forwards outstanding rib of front surface.
In the past, the shape of each rib, length, configuration pattern etc. had regularity, symmetry.
As with Fig. 6, routine in the past suitable prior art shown in Figure 7, for example have japanese kokai publication hei 9-224297, Japan special table 2007-535260.
Patent documentation 1: japanese kokai publication hei 9-224297
Patent documentation 2: Japan special table 2007-535260
As shown in Figure 6, the oscillating plate of patent documentation 1 forms circle, along the whole circumference direction of this oscillating plate 100 from inboard outward perimembranous with the interval rule of regulation be arranged with identical shaped a plurality of ribs.
The oscillating plate of patent documentation 2, its shape forms oblong shape.In the document 2, be from inboard circular portion to periphery with the interval of regulation at the length direction both ends of oscillating plate and be formed with many ribs radially respectively, the rib pattern at both ends is identical respectively.
Fig. 8 representes the frequency characteristic of the oscillating plate of oblong shape shown in Figure 7.In oscillating plate shown in Figure 7, rib 101 extends to peripheral part from the inboard of oscillating plate 100, and is configured with the interval of regulation.In addition, the outer end of all ribs 101 all extends to the oscillating plate peripheral part, and is configured regularly along the whole circumference direction of oscillating plate.In addition, the rib pattern is the line symmetry with respect to the major axis of the length direction central portion of oscillating plate 100.In addition, also be the line symmetry, have symmetry with respect to minor axis.
In the oscillating plate of this oblong shape, even form many ribs 101 in order to disperse resonance mode, among Fig. 8 shown in A portion, also produced crest and trough at high-frequency region, and acoustic pressure reduces also.
Like this, have following problem: though in order to reduce resonance mode on the surface of oscillating plate regular property, symmetry ground form rib, can not realize stable and flat frequency characteristic at high-frequency region.
Summary of the invention
The present invention is exactly In view of the foregoing and proposes, and its purpose is to provide the resonance mode that makes in the oscillating plate face to disperse, makes the stable and smooth electroacoustic transducer of frequency characteristic with oscillating plate and use the electroacoustic transducer of this oscillating plate at high-frequency region.
The invention of technical scheme 1 is that a kind of electroacoustic transducer is used oscillating plate; This electroacoustic transducer is formed with a plurality of ribs with the inboard outward perimembranous from oscillating plate on the oscillating plate; Above-mentioned a plurality of intercostal devices spaced apart; It is characterized in that, make the shape, length, configuration of the rib that is arranged in order along the circumferencial direction of oscillating plate, at least one difference at interval, become irregular rib pattern.
Use oscillating plate according to technical scheme 1 described electroacoustic transducer; The invention of technical scheme 2 is characterised in that; Above-mentioned oscillating plate forms oblong shape; Be formed with circular circular top part at the central portion of this oscillating plate, be formed with the voice coil loudspeaker voice coil installation portion at the peripheral part of this circular top part, and be formed with the edge part of oblong shape at the peripheral part of this circular top part; On the long axis direction of the above-mentioned oscillating plate that forms oblong shape, be formed with fin, be formed with a plurality of recessed ribs respectively in the first half and the Lower Half of oblong shape.
The invention of technical scheme 3 is a kind of electroacoustic transducers, it is characterized in that, this electroacoustic transducer comprises that technical scheme 1 or 2 described electroacoustic transducers use oscillating plate.
In the present invention; The electroacoustic transducer of rib that the inboard outward perimembranous from oscillating plate is formed with a plurality of devices spaced apart with oscillating plate; Make the shape, length, configuration of above-mentioned each rib of formation, at least one difference at interval in order to disperse resonance mode; Prevented that the part a little less than the rigidity in oscillating plate from forming resonance mode, even and contrary resonate etc. that has produced edge part and circular top part, the counteracting or the enhancing of acoustic pressure also suppressed; Therefore bigger trough, crest can be suppressed at high-frequency region, good sound quality can be obtained.
Description of drawings
Fig. 1 representes the vertical view of oscillating plate of the oblong shape of one embodiment of the invention.
Fig. 2 representes the stereogram of oscillating plate shown in Figure 1.
Fig. 3 has represented to use the simulation drawing of the frequency characteristic corresponding with acoustic pressure of the electroacoustic transducer of oscillating plate shown in Figure 1.
Fig. 4 is the key diagram with respect to the simulation of the resonance mode of the oscillating plate of comparative example of the present invention.
Fig. 5 is the key diagram of simulation of the resonance mode of product of the present invention.
Fig. 6 representes the vertical view of the oscillating plate of circle in the past.
Fig. 7 representes the vertical view of the oscillating plate of oblong shape in the past.
Fig. 8 has represented to use the simulation drawing of the frequency characteristic corresponding with acoustic pressure of electroacoustic transducer of the oscillating plate of oblong shape in the past.
Embodiment
Below, according to description of drawings the present invention.
Embodiment 1
Fig. 1 representes the vertical view of one embodiment of the invention, and Fig. 2 representes its stereogram.In this example, as the oscillating plate illustration oscillating plate of oblong shape.
Clearly can know according to Fig. 2; The vibration plane of oscillating plate 1 has with circular circular top part 1a that representes and the edge part 1b that is formed on the oblong shape of its periphery; Edge part 1b is bent to form in the acoustic emission direction towards the periphery fixed part from the voice coil loudspeaker voice coil installation portion 2 of the periphery of circular top part 1a agley, and the side section forms roughly coniform.Inside at voice coil loudspeaker voice coil installation portion 2 is blocked with the mode that does not have the hole, is formed with circular top part 1a.The peripheral part of the 1b of portion is provided with periphery fixed part 3 on the edge of.
In this embodiment, it is characterized in that, on the oscillating plate face, be formed with the rib of a plurality of convexs and the rib of a plurality of concavities, the rib of this convex surface observation in the past is forwards outstanding; The rib of this concavity is side-prominent to the back side, can see as groove during surface observation when the past; Make the mutual shape of each rib, length, configuration, at least one difference at interval and local irregularities ground constitutes the rib pattern, thereby the resonance mode in the oscillating plate face is disperseed, make frequency characteristic stable and smooth.
At this, irregular is opposite notion with the rib pattern of rule, is the shape of instigating rib, length, position, at least one difference at interval.And, as the form of rib, can be forwards outstanding fin with side-prominent to the back side, when the past any one situation in the recessed rib of rear side depression during surface observation, perhaps also can be that these several kinds of situation are mixed.When fin and recessed rib mix, in the present invention, make the quantity of these ribs different, make concavo-convex area be difficult to equate, suppressed bigger crest, the generation of trough.
In Fig. 1, for the ease of explanation, the center of the voice coil loudspeaker voice coil installation portion 2 of the circle that will form at the central portion of the oscillating plate of oblong shape is made as O.In addition, will extend along the length direction of the major diameter direction of oblong shape and the major axis through center O is made as X-X ', will extend along the length direction of minor axis direction and the minor axis through center O is made as Y-Y '.
In addition, will be that the fan-shaped zone of X-Y at center is made as the 1st zone with the center O, Y-X ' zone is made as the 2nd zone, X '-Y ' zone is made as the 3rd zone, Y '-X zone is made as the 4th zone.
In the oscillating plate 1 of this oblong shape, on the X-X ' line and the both sides of voice coil loudspeaker voice coil installation portion 2 respectively be formed with respectively along long axis direction one forwards outstanding form the word of falling U shape roughly on the fin 4,4 ' of web-like (up roll).
In addition, on the short-axis direction on the Y-Y ' line, be formed with respectively form elongated lens shaped, outstanding towards the back side, surface observation is the recessed rib 5,5 ' of concavity in the past.This recessed rib 5,5 ' shape are littler than above-mentioned fin 4,4 ' shape.
In the oscillating plate 1 of oblong shape, on the long axis direction of X-X ' line, longer from the distance of the peripheral part of the outer thoughtful oscillating plate 1 of the voice coil loudspeaker voice coil installation portion 2 of circle.Thereby the rigidity of this part is lower, is easy to produce resonance mode, therefore with after other ribs of stating compare, increased the width of this fin 4, improved the rigidity of the long axis direction of oscillating plate 1.
Each fin 4, the inner of 4 ' from the peripheral part that forms circular voice coil loudspeaker voice coil installation portion 2 towards the peripheral part of oscillating plate 1 linearly shape extend.But each fin 4,4 ' outer end do not contact with the peripheral part of oscillating plate 1, are positioned at the inboard of leaving peripheral part.
The width of fin 4 is bigger, and inner end forms roughly circular-arc, and the outer end is sharper than inner end.
In addition, fin 4,4 ' top 4a, 4a ' bending.
In the illustrated state of Fig. 1; The clockwise direction top position of the fin 4 on major axis in the 1st area side above the left side; It is side-prominent to the back side with fin 4 devices spaced apart l1 ground to be formed with the 1st recessed rib 6, the 1 recessed ribs 6, and the past forms concavity during surface observation.The inner of the 1st recessed rib 6 is point, and the sharpness of outer end forms elongated roughly fusiform shape less than the sharpness and the global shape of the inner.It is most advanced and sophisticated thin that the inner end of this recessed rib 6 becomes, slowly broaden from inner end outward end, and the outer end become once more most advanced and sophisticated thin, but the width of outer end is wider than the width of inner end a little.In addition, the outer end of recessed rib 6 contacts with the peripheral part of oscillating plate 1.The inner of recessed rib 6 is positioned at the substantial middle portion of the fin 4 that is in downside, does not contact with voice coil loudspeaker voice coil installation portion 2.
In illustrated state, above the clockwise direction of the 1st recessed rib 6, the size that is formed with to devices spaced apart the 2nd recessed rib 7, the 2 recessed ribs 7 with it is longer and likewise form roughly streamlined than recessed rib 6.The inner of the 2nd recessed rib 7 contacts with the periphery of voice coil loudspeaker voice coil installation portion 2, and its outer end towards the peripheral part of oscillating plate 1 linearly shape extend, but the outer end does not contact with the peripheral part of oscillating plate 1, but is positioned at slightly in the inner part.
Above the clockwise direction of the 2nd recessed rib 7, the length that is formed with to devices spaced apart the 1st recessed rib 8, the 1 recessed ribs 8 with it is shorter and when outer surface is observed, form elongated lens shaped than the 1st, the 2nd recessed rib 6,7.The outer end of the 1st recessed rib 8 and the inner be point.Its outer end contacts with the peripheral part of oscillating plate 1.Extend towards voice coil loudspeaker voice coil installation portion 2 sides its inner, but do not contact with voice coil loudspeaker voice coil installation portion 2, between the periphery of inner and voice coil loudspeaker voice coil installation portion 2, has a little distance.
The 1st roughly on the clockwise direction of the recessed rib 8 of lens shaped along laterally with it devices spaced apart landform materialize become roughly the 2nd recessed rib 9 of lens shaped.The 2nd recessed rib 9 is grown than the above-mentioned the 1st recessed rib 8, and forms elongated shape more.Its outer end contacts with the peripheral part of oscillating plate 1.Extend towards voice coil loudspeaker voice coil installation portion 2 the inner of the 2nd recessed rib 9, compares the periphery near voice coil loudspeaker voice coil installation portion 2 with the 1st recessed rib 8, but have a little interval.
Devices spaced apart landform materialize becomes roughly the 3rd recessed rib 10 of lens shaped with it on the clockwise direction of the 2nd recessed rib 9.The length of length ratio the 2nd recessed rib 9 that forms lens shaped just now of the 3rd recessed rib 10 is short.Its outer end contacts with the peripheral part of oscillating plate 1.Inner towards 2 extensions of voice coil loudspeaker voice coil installation portion, but between the periphery of inner and voice coil loudspeaker voice coil installation portion 2, have a little interval.
On the clockwise direction of the 3rd recessed rib 10, be formed with to devices spaced apart the recessed rib 5 of elongated roughly lens shaped with it, the length of this recessed rib 5 than the length of this recessed rib 10 slightly short and.This recessed rib 5 is positioned on the minor axis of Y-Y ' line.Its outer end contacts with the periphery of oscillating plate 1.Inner towards 2 extensions of voice coil loudspeaker voice coil installation portion, but between the periphery of inner and voice coil loudspeaker voice coil installation portion 2, have a little interval.
In the 1st zone; Clearly can know fin 4 and form interval, the 2nd recessed rib 7 between interval, the 1st recessed rib 6 and the 2nd recessed rib 7 between the roughly fusiform the 1st recessed rib 6 and form interval, the 1st recessed rib 8 between the 1st recessed rib 8 of lens shaped roughly and likewise form interval, the 2nd recessed rib 9 between the 2nd recessed rib 9 of lens shaped roughly and likewise form interval, the 3rd recessed rib 10 between the 3rd recessed rib 10 of lens shaped roughly and the interval that is positioned between the recessed rib 5 on the Y-Y ' line has nothing in common with each other according to illustrated mode.
Distance between the periphery of the inner of each rib and voice coil loudspeaker voice coil installation portion 2, be that the distance of the interior end distance center O of each rib has nothing in common with each other.Rib pattern in the 1st zone is irregular.
In the 2nd zone, on the clockwise direction of the recessed rib 5 on the Y-Y ' line, be formed with to devices spaced apart recessed rib 10 with it.In the shape of this recessed rib 10 and the 1st zone to be with recessed rib 5 that benchmark (in illustrated state, is the left side) in the counterclockwise direction identical with the above-mentioned the 3rd recessed rib 10 of these recessed rib 5 adjacent formation.
On the clockwise direction of the recessed rib 10 in the 2nd zone, be formed with to devices spaced apart recessed rib 9 with it.The shape of this recessed rib 9 is identical with the 2nd recessed rib 9 in the 1st zone.
On the clockwise direction of this recessed rib 9, be formed with to devices spaced apart the roughly recessed rib 11 of lens shaped with it.The outer end of recessed rib 11 contacts with the peripheral part of oscillating plate 1.The inner is left with voice coil loudspeaker voice coil installation portion 2 mutually.This recessed rib 11 is different with the shape of the 1st recessed rib 8 in the 1st zone.In addition, recessed rib 11 in the 2nd zone and the interval between the recessed rib 9 are greater than the interval between the 1st recessed rib 8 of the 2nd recessed rib 9 that forms lens shaped roughly in the 1st zone and the counter clockwise direction side adjacent with the 2nd recessed rib 9.
On the clockwise direction of recessed rib 11 in the 2nd zone, devices spaced apart landform materialize becomes roughly fusiform recessed rib 7 with it.The shape of the recessed rib 7 in the 2nd zone is identical with the 1st regional the roughly fusiform the 2nd recessed rib 7 that forms, but both intervals with between other ribs that lay respectively at both sides are different.
On the clockwise direction of recessed rib 7 in the 2nd zone, devices spaced apart landform materialize becomes roughly fusiform recessed rib 6 with it.The shape of this recessed rib 6 and the 1st zone to form the roughly fusiform the 1st recessed rib 6 roughly the same, but both intervals with between other ribs that lay respectively at both sides are different.
On the clockwise direction of above-mentioned recessed rib 6 in the 2nd zone, devices spaced apart l2 ground is formed with another fin 4 ' on the X-X ' line with it.This at interval l2 less than fin 4 of the 1st area side and the interval l1 between the recessed rib 6.Rib in the 2nd zone is also irregular each other.
Then, the interior rib in the 3rd zone is described.
On the clockwise direction of another fin 4 on the major axis, devices spaced apart l1 ground is formed with recessed rib 6 with it.The 1st recessed rib 6 in the shape of this recessed rib 6 and the 1st zone is roughly the same.In addition, the 1st recessed rib 6 and the interval l1 between fin 4 in interval between this recessed rib 6 and another fin 4 ' and the 1st zone are roughly the same.
On the clockwise direction of recessed rib 6 in the 3rd zone, be formed with to devices spaced apart the recessed rib 5 ' on recessed rib 7, recessed rib 8, recessed rib 9, recessed rib 10, the Y-Y ' line respectively.In the shape of these each ribs 6～10 and the 1st zone form the roughly fusiform the 1st recessed rib, the 2nd recessed rib 6,7, to form the recessed rib in the 1st recessed rib～3rd of lens shaped roughly 8～10 identical, but the rib in the 3rd zone forms irregular each other.
Then, the interior rib in the 4th zone is described.
Between the fin 4 on the X-X ' line on the recessed rib 5 ' on the Y-Y ' line on border in the 3rd and the 4th zone and the border in the 4th and the 1st zone, be formed with to the recessed rib 5 ' devices spaced apart from the Y-Y ' line recessed rib 10, recessed rib 9, recessed rib 11, recessed rib 7, recessed rib 6 successively.
The shape of these ribs is roughly the same with recessed rib 10, recessed rib 9, recessed rib 11, recessed rib 7, recessed rib 6 that recessed rib 5 devices spaced apart of from the Y-Y ' line in the 2nd zone ground forms successively, but the rib in the 4th zone forms irregular each other.
As stated; Be formed with a pair of fin 4,4 ' along long axis direction; The first half and the Lower Half devices spaced apart ground of oscillating plate 1 with the major axis being the oblong shape of benchmark is formed with a plurality of recessed ribs, and these each ribs are between the peripheral part of the periphery that is formed on voice coil loudspeaker voice coil installation portion 2 radially and oscillating plate 1.
More than each rib shape, be configured to, with respect to X-X ' line, its first half and Lower Half are not the line symmetry.With respect to Y-Y ' line, its left side and right-hand part are not the line symmetry yet.In the present invention, make along differences such as each other shape of the rib of the circumferencial direction of oscillating plate adjacent arrangement successively, length, intervals.In the present invention, oscillating plate being divided into equably plural when zone, at least one zone, each other shape of adjacent rib, length, configuration, different and form irregular at interval.And the shape of each rib in each zone, the 1st on the circumferencial direction～4th, length, configuration, interval etc. are neither identical, form irregular fully.
On the back side of the voice coil loudspeaker voice coil installation portion 2 of this oscillating plate 1, voice coil loudspeaker voice coil (not shown) is installed, it is configured in the magnetic gap of magnetic circuit (not shown) of appropriate configuration, and with pack into oblong framework (not shown) etc. and produce the electroacoustic transducer of oval type of oscillating plate 1.
Fig. 3 representes the simulation of the frequency characteristic corresponding with acoustic pressure of this electroacoustic transducer.
Adopt the present invention, shown in the B that surrounds with circle, suppressed resonance mode, improved acoustic pressure, and suppressed the generation of crest, trough, obtained good frequency characteristic, improved tonequality at high frequency treatment.
Adopt the present invention, suppressed resonance mode, but as the comparative example that is used for it is proved, show and used the simulation of measuring by the resonance mode of electroacoustic transducer shown in Figure 7 with oscillating plate that systematicness and symmetric rib 101 constitute.
Fig. 4 representes the simulation of resonance mode electroacoustic transducer, a certain CF of comparative example.
In this oscillating plate; At the length direction both ends; On voice coil loudspeaker voice coil installation portion 2, produced the stronger resonance mode of the concentrated shape of red part a; Around this redness part a, produce the resonance mode of the part of yellow b, further around the part of this yellow b, produced the resonance mode of the part of green c, further around the part of this green c, produced the resonance mode of the part of light blue d.Other minor axis direction, peripheral part roughly are blue e.Color is corresponding with the absolute value of the displacement of oscillating plate, and blue e → light blue d → green c → yellow b → red a representes that the degree vibrated, blue e represent that resonance is few, and red a representes that vibration is big.In this oscillating plate, red a partly concentrates on the central portion both ends side, that lean on voice coil loudspeaker voice coil installation portion 2 one sides of comparing the major diameter side with the minor axis side, and resonance mode is bigger.
Thereby can know, even in order to reduce resonance on the face of oscillating plate the compartment of terrain of regulation spaced apart in the circumferential direction form rib 101 regularly, also produced resonance, can not realize stable and the flat frequency characteristic at high frequency side.
Fig. 5 has represented to adopt the simulation of the resonance mode under a certain CF likewise of the electroacoustic transducer of the oscillating plate of the present invention 1 that has been irregularly formed the rib pattern.
Adopt the present invention, resonance mode is disperseed, and the stronger resonance mode of red a reduces.And, the area decreases of the part of the part of the yellow b of its periphery, the part of green c, light blue d.In addition, a ' is orange among the figure, and its resonance mode is lower than red a.
As product in the past, be formed under the situation of rib on the oscillating plate for the pattern of rule, produce the resonance mode of the shape of concentrating.As its reason; In having the oscillating plate of regular pattern; Be easy to part in oscillating plate, a little less than the rigidity and form resonance mode, according to circumstances produced contrary resonance etc. and the counteracting of edge part and circular top part or strengthened acoustic pressure, in Fig. 8; Shown in A, frequency characteristic has produced bigger trough, crest.
Relative therewith; In product of the present invention; Make in each other shape of adjacent at least rib, length, configuration, the interval etc. at least one equal and be irregularly formed the rib pattern, be difficult in oscillating plate, forming resonance mode, suppose producing edge part 1b and circular top part 1a under situation about resonating; Also prevent the counteracting or the enhancing of acoustic pressure, suppressed bigger crest, the trough of high-frequency region.
Thereby, can obtain good frequency characteristic shown in Figure 3.
In addition; In Fig. 1, Fig. 2; Illustration the quantity of fin 4,4 ', recessed rib 5～11, shape, length, configuration, at interval, the rib direction of extending to peripheral part from the inboard of oscillating plate etc. is considered to illustrated embodiments of the present invention; But be not limited to illustrated example, in the scope that does not break away from purport of the present invention, can implement various distortion.
In addition, in Fig. 1 and embodiment shown in Figure 2, as rib, make fin 4,4 ' and recessed rib 5～11 mix, but also can it be mixed and any one rib is set.
In addition, in the above-described embodiments, the oscillating plate of oblong shape has been described, but circular oscillating plate also can be used the present invention.
Claims (3)
1. an electroacoustic transducer is used oscillating plate, and this electroacoustic transducer is formed with a plurality of ribs with the inboard outward perimembranous from oscillating plate on the oscillating plate, and devices spaced apart between above-mentioned a plurality of ribs is characterized in that,
Make the shape, length, configuration of the rib that is arranged in order along the circumferencial direction of oscillating plate, at least one difference at interval, become irregular rib pattern.
2. electroacoustic transducer according to claim 1 is used oscillating plate, it is characterized in that,
Above-mentioned oscillating plate forms oblong shape; Central portion at this oscillating plate is formed with circular circular top part; Peripheral part at this circular top part is formed with the voice coil loudspeaker voice coil installation portion; And the peripheral part of this circular top part is formed with the edge part of oblong shape, on the long axis direction of the above-mentioned oscillating plate that forms oblong shape, is formed with fin, is formed with a plurality of recessed ribs respectively in the first half and the Lower Half of oblong shape.
3. an electroacoustic transducer is characterized in that,
This electroacoustic transducer comprises that claim 1 or 2 described electroacoustic transducers form with oscillating plate.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2010-258049 | 2010-11-18 | ||
| JP2010258049A JP2012109859A (en) | 2010-11-18 | 2010-11-18 | Electro-acoustic transducer diaphragm and electro-acoustic transducer using the same |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102469389A true CN102469389A (en) | 2012-05-23 |
Family
ID=46072437
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011103617635A Pending CN102469389A (en) | 2010-11-18 | 2011-11-15 | Diaphragm for electroacoustic transducer and electroacoustic transducer using diaphragm |
Country Status (3)
| Country | Link |
|---|---|
| JP (1) | JP2012109859A (en) |
| KR (1) | KR20120053944A (en) |
| CN (1) | CN102469389A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104581550A (en) * | 2014-12-31 | 2015-04-29 | 苏州恒听电子有限公司 | Novel vibrating diaphragm with pits and telephone receiver |
| CN111031458A (en) * | 2018-10-09 | 2020-04-17 | 安桥株式会社 | Diaphragm, speaker unit using diaphragm, headphone, and earphone |
| CN111567062A (en) * | 2017-11-10 | 2020-08-21 | 阿米那科技有限公司 | Flat panel speaker |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US9628917B2 (en) * | 2014-07-23 | 2017-04-18 | Bose Corporation | Sound producing system |
| WO2016072817A1 (en) * | 2014-11-08 | 2016-05-12 | 주식회사 슬리비스 | Diaphragm for speaker apparatus |
| US11451909B1 (en) * | 2021-04-01 | 2022-09-20 | Apple Inc. | Vented audio transducer |
-
2010
- 2010-11-18 JP JP2010258049A patent/JP2012109859A/en active Pending
-
2011
- 2011-07-22 KR KR1020110072866A patent/KR20120053944A/en not_active Application Discontinuation
- 2011-11-15 CN CN2011103617635A patent/CN102469389A/en active Pending
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104581550A (en) * | 2014-12-31 | 2015-04-29 | 苏州恒听电子有限公司 | Novel vibrating diaphragm with pits and telephone receiver |
| CN111567062A (en) * | 2017-11-10 | 2020-08-21 | 阿米那科技有限公司 | Flat panel speaker |
| US11388518B2 (en) | 2017-11-10 | 2022-07-12 | Amina Technologies Limited | Flat panel loudspeaker |
| CN111567062B (en) * | 2017-11-10 | 2022-12-13 | 阿米那科技有限公司 | Flat panel speaker |
| CN111031458A (en) * | 2018-10-09 | 2020-04-17 | 安桥株式会社 | Diaphragm, speaker unit using diaphragm, headphone, and earphone |
Also Published As
| Publication number | Publication date |
|---|---|
| KR20120053944A (en) | 2012-05-29 |
| JP2012109859A (en) | 2012-06-07 |
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Application publication date: 20120523 |