WO2011129108A1 - スピーカ、補聴器、インナーイヤーヘッドホン、携帯型情報処理装置、およびav機器 - Google Patents
スピーカ、補聴器、インナーイヤーヘッドホン、携帯型情報処理装置、およびav機器 Download PDFInfo
- Publication number
- WO2011129108A1 WO2011129108A1 PCT/JP2011/002178 JP2011002178W WO2011129108A1 WO 2011129108 A1 WO2011129108 A1 WO 2011129108A1 JP 2011002178 W JP2011002178 W JP 2011002178W WO 2011129108 A1 WO2011129108 A1 WO 2011129108A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- speaker
- diaphragm
- fixing portion
- suspension
- speaker according
- Prior art date
Links
- 210000003027 ear inner Anatomy 0.000 title claims description 13
- 230000010365 information processing Effects 0.000 title claims description 8
- 239000000725 suspension Substances 0.000 claims abstract description 83
- 239000011553 magnetic fluid Substances 0.000 claims description 20
- 230000002093 peripheral effect Effects 0.000 claims description 12
- 230000000007 visual effect Effects 0.000 claims description 2
- 238000010586 diagram Methods 0.000 description 16
- 210000000613 ear canal Anatomy 0.000 description 14
- 230000000694 effects Effects 0.000 description 8
- 239000004973 liquid crystal related substance Substances 0.000 description 8
- 230000001413 cellular effect Effects 0.000 description 5
- 230000007423 decrease Effects 0.000 description 5
- 238000009826 distribution Methods 0.000 description 5
- 230000004907 flux Effects 0.000 description 5
- 238000004904 shortening Methods 0.000 description 5
- 230000005520 electrodynamics Effects 0.000 description 4
- 238000000034 method Methods 0.000 description 4
- 238000009423 ventilation Methods 0.000 description 3
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- 230000008859 change Effects 0.000 description 2
- 230000008878 coupling Effects 0.000 description 2
- 238000010168 coupling process Methods 0.000 description 2
- 238000005859 coupling reaction Methods 0.000 description 2
- 230000005389 magnetism Effects 0.000 description 2
- 230000007246 mechanism Effects 0.000 description 2
- 230000001151 other effect Effects 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 238000005096 rolling process Methods 0.000 description 2
- 238000007789 sealing Methods 0.000 description 2
- 230000005236 sound signal Effects 0.000 description 2
- 206010011878 Deafness Diseases 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 239000000853 adhesive Substances 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 239000000470 constituent Substances 0.000 description 1
- 230000008602 contraction Effects 0.000 description 1
- 230000010370 hearing loss Effects 0.000 description 1
- 231100000888 hearing loss Toxicity 0.000 description 1
- 208000016354 hearing loss disease Diseases 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 230000001629 suppression Effects 0.000 description 1
Images
Classifications
-
- 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
-
- 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
- H04R7/24—Tensioning by means acting directly on free portions of diaphragm or cone
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
- H04R1/00—Details of transducers, loudspeakers or microphones
- H04R1/10—Earpieces; Attachments therefor ; Earphones; Monophonic headphones
- H04R1/1058—Manufacture or assembly
- H04R1/1075—Mountings of transducers in earphones or headphones
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
- H04R1/00—Details of transducers, loudspeakers or microphones
- H04R1/20—Arrangements for obtaining desired frequency or directional characteristics
- H04R1/22—Arrangements for obtaining desired frequency or directional characteristics for obtaining desired frequency characteristic only
- H04R1/227—Arrangements for obtaining desired frequency or directional characteristics for obtaining desired frequency characteristic only using transducers reproducing the same frequency band
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
- H04R1/00—Details of transducers, loudspeakers or microphones
- H04R1/20—Arrangements for obtaining desired frequency or directional characteristics
- H04R1/32—Arrangements for obtaining desired frequency or directional characteristics for obtaining desired directional characteristic only
- H04R1/40—Arrangements for obtaining desired frequency or directional characteristics for obtaining desired directional characteristic only by combining a number of identical transducers
- H04R1/403—Arrangements for obtaining desired frequency or directional characteristics for obtaining desired directional characteristic only by combining a number of identical transducers loud-speakers
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
- H04R2307/00—Details of diaphragms or cones for electromechanical transducers, their suspension or their manufacture covered by H04R7/00 or H04R31/003, not provided for in any of its subgroups
- H04R2307/207—Shape aspects of the outer suspension of loudspeaker diaphragms
-
- 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
- H04R2499/11—Transducers incorporated or for use in hand-held devices, e.g. mobile phones, PDA's, camera's
-
- 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
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
- H04R25/00—Deaf-aid sets, i.e. electro-acoustic or electro-mechanical hearing aids; Electric tinnitus maskers providing an auditory perception
- H04R25/60—Mounting or interconnection of hearing aid parts, e.g. inside tips, housings or to ossicles
- H04R25/604—Mounting or interconnection of hearing aid parts, e.g. inside tips, housings or to ossicles of acoustic or vibrational transducers
-
- 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
- H04R7/20—Securing diaphragm or cone resiliently to support by flexible material, springs, cords, or strands
-
- 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
- H04R7/22—Clamping rim of diaphragm or cone against seating
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
- H04R9/00—Transducers of moving-coil, moving-strip, or moving-wire type
- H04R9/02—Details
- H04R9/025—Magnetic circuit
- H04R9/027—Air gaps using a magnetic fluid
Definitions
- the present invention relates to reducing the diameter of a small speaker.
- hearing aids have been realized that can be heard with higher sound quality by optimizing the ease of listening according to the degree of hearing loss of the user.
- hearing aids are essential items for daily life and are worn and used continuously over a long period of time. Therefore, in order to make a hearing aid that does not make the user tired even when worn for a long time, the hearing aid is required to be smaller.
- an air passage is provided between the receiver and the ear canal, so that the receiver does not completely block the ear canal when worn.
- the receiver does not completely block the ear canal when worn.
- balanced armature type speakers which are one type of electromagnetic speaker
- the balanced armature type has a structure in which an armature (movable iron piece) to which a diaphragm is connected is sandwiched between two sets of coils and magnets.
- a current is passed through each coil to change the magnetic field in the armature.
- the armature held in the central part of the magnetic gap where the magnetic attractive forces of the two magnets are balanced vibrates, and as a result, sound waves are generated.
- the balance armature type speaker can be downsized due to its structure, but the magnetic gap between the magnet and the armature is narrow, and it is difficult to reproduce a low frequency range that requires a large amplitude. Therefore, there is an electrodynamic method as a method for realizing reproduction in a low sound range.
- FIG. 11 is a cross-sectional view showing the structure of a conventional electrodynamic type small speaker described in Patent Document 1.
- a conventional electrodynamic type small speaker shown in FIG. 11 includes a yoke 1, a magnet 2, a plate 3, a voice coil 4, a diaphragm 5, a magnetic fluid 6, and a suspension 7.
- the stiffness can be reduced by making the suspension 7 softer than the diaphragm 5 or thinner. As a result, the lowest resonance frequency is lowered, thereby enabling reproduction in the low frequency range.
- the diaphragm 5 and the suspension 7 are arranged on substantially the same plane. Therefore, in order to reduce the outer diameter of the speaker, it is necessary to reduce the diaphragm area or to shorten the length of the suspension (the length in the left-right direction in FIG. 11).
- the present invention has been made in consideration of the above-described conventional problems, and an object of the present invention is to provide a loudspeaker that can be reproduced in a low sound range and can be made smaller than before.
- a speaker includes a housing having a magnet inside, a plate attached to the upper surface of the magnet, and a magnetic gap formed on the outer periphery of the plate.
- a voice coil disposed so as to vibrate in a vertical direction; a diaphragm having a peripheral edge joined to an upper end of the voice coil; and a suspension connecting the diaphragm and the housing;
- a first fixing portion which is a portion fixed to the diaphragm, and a second fixing portion which is a portion fixed to the housing, and the second fixing portion is located above the first fixing portion.
- At least one of the first fixing portion and the second fixing portion is disposed in an inner region that is a region corresponding to the inner side of the peripheral edge portion of the diaphragm in a top view.
- the first fixing portion and the second fixing portion are arranged at different positions in the vertical direction (vibration direction of the diaphragm).
- at least one of the first fixing portion and the second fixing portion is disposed in the inner region in a top view.
- the outer diameter of the speaker can be reduced without reducing the area of the diaphragm and without shortening the length of the suspension.
- the outer diameter of the speaker can be reduced while maintaining a diaphragm area for realizing a predetermined sound pressure.
- the outer diameter of the loudspeaker can be reduced without causing problems such as an increase in the nonlinearity of the supporting force by the suspension and an increase in the stiffness of the suspension.
- the speaker according to this aspect can realize the suppression of the distortion and the reduction of the minimum resonance frequency, and can be made smaller than the conventional one.
- the first fixing portion is disposed in an outer region that is a region surrounding the inner region of the diaphragm, and the second fixing portion is disposed on the inner side of the housing. It may be arranged in a region.
- the first fixing portion is disposed in the inner region of the diaphragm, and the second fixing portion is an outer region that surrounds the inner region of the housing. It may be arranged in a region.
- the positional relationship between the first fixing portion and the second fixing portion in the top view may be either inside, for example, characteristics such as sound quality, ease of assembly of the speaker, or parts of the suspension or the like It can be determined flexibly according to production efficiency.
- the casing includes a yoke having a side wall provided so as to surround the magnet, the plate, and the voice coil, and the second fixing portion is It is good also as arrange
- the end of the suspension on the housing side can be fixed to the yoke, so that, for example, the configuration of the speaker is simplified.
- the magnetic distribution in the magnetic gap has a distribution close to the vertical symmetry about the plate. . That is, the symmetry of the magnetic flux distribution interlinking the voice coil is improved. As a result, non-linearity due to the magnetic flux density can be reduced, thereby reducing driving force distortion acting on the voice coil even at a large amplitude.
- the housing further includes a yoke cover that covers an opening formed by an upper edge of the side wall portion, and the second fixing portion includes the side wall portion and the yoke. It may be sandwiched between the cover.
- the end portion (second fixing portion) of the suspension on the housing side is realized, so that, for example, the speaker assembly process can be simplified.
- the diaphragm may have a concave portion having a shape corresponding to the first fixing portion in the inner region.
- the attachment of the first fixing portion to the diaphragm is performed accurately and easily.
- the casing is formed by a yoke having a bottom portion to which the magnet is joined and a side wall portion provided so as to surround the magnet, and an upper end edge of the side wall portion.
- a yoke cover for covering the opening, and the second fixing portion may be disposed at a position in contact with the inner surface of the yoke cover.
- the second fixing portion can be attached to the housing using the yoke cover, for example, the configuration of the speaker is simplified.
- At least a part of the suspension between the first fixing portion and the second fixing portion may be curved in a direction parallel to the vertical direction. Good.
- the suspension is divided into a plurality of portions extending radially in a top view, (I) Each of the plurality of portions may have the first fixing portion, or (ii) Each of the plurality of portions may have the second fixing portion.
- the stiffness of the suspension is lowered.
- the lowest resonance frequency of the speaker can be further reduced, and as a result, lower frequency sound can be reproduced.
- the shape of the diaphragm in a top view may be a long shape.
- the hearing aid or the inner ear headphone can be configured so that the diaphragm is inserted into the ear canal when worn. As a result, for example, the voice transmitted to the user can be clarified.
- the three-dimensional shape of the diaphragm may be a dome shape.
- the rigidity of the entire diaphragm can be improved. Even when the thickness of the diaphragm is reduced, the predetermined rigidity can be maintained.
- the speaker according to one aspect of the present invention may further include a magnetic fluid filled between the voice coil and the plate.
- the magnetic fluid is held between the plate and the voice coil by the magnetic field generated in the magnetic gap.
- the support part by the magnetic fluid about the diaphragm and the support part by the second fixing part are separated by a relatively long distance in the vibration direction of the diaphragm, the rolling of the diaphragm is effective. Is prevented.
- the speaker is two speaker units arranged side by side in the housing, each of which includes the magnet, the plate, the voice coil, the diaphragm, And two speaker units having the suspension, each of the two adjacent voice coils being a shared magnetic gap that is a part of the magnetic gap, and formed between the two adjacent plates It may be arranged in the shared magnetic gap.
- the adjacent voice coil can be vibrated by effectively utilizing the magnetism of the adjacent magnet. Moreover, since the wall surface of the yoke is not required between the two speaker units, the number of diaphragms arranged per unit area (in other words, the effective vibration area per unit area) can be improved, resulting in high sound pressure. A level is obtained.
- a speaker having three or more speaker units can be easily realized.
- these speaker units are arranged in a lattice shape, a linear shape, or a curved shape so that adjacent magnets have opposite magnetic poles.
- magnetic flux is effectively utilized between these speaker units, and as a result, the increase in the total area of the diaphragm by the multi-unit and the miniaturization of the entire speaker are compatible.
- the present invention can also be realized as a hearing aid, an inner ear headphone, a portable information processing device, and an AV (Audio and Visual) device each including the speaker according to any aspect of the present invention.
- AV Audio and Visual
- FIG. 1A is a plan view of the speaker according to Embodiment 1 of the present invention.
- FIG. 1B is a diagram showing an AA cross section in FIG. 1A.
- FIG. 2 is a schematic diagram for explaining the arrangement positions of the first fixing portion and the second fixing portion in the first embodiment of the present invention.
- FIG. 3A is a plan view of the speaker according to Embodiment 2 of the present invention.
- FIG. 3B is a diagram showing a cross section along AA in FIG. 3A.
- FIG. 4A is a plan view of the speaker according to Embodiment 3 of the present invention.
- FIG. 4B is a diagram showing an AA cross section in FIG. 4A.
- FIG. 5 is a diagram illustrating an example of the appearance of a hearing aid according to Embodiment 4 of the present invention.
- FIG. 6 is an enlarged cross-sectional view of a receiver unit in the hearing aid shown in FIG.
- FIG. 7 is a diagram showing an example of the appearance of a mobile phone according to Embodiment 5 of the present invention.
- FIG. 8 is a diagram showing an example of the appearance of a flat-screen television according to Embodiment 6 of the present invention.
- FIG. 9A is a plan view of the speaker according to Embodiment 6 of the present invention.
- FIG. 9B is a diagram showing an AA cross section in FIG. 9A.
- FIG. 10 is a partially enlarged view in which a part of the cross section shown in FIG. 9B is enlarged.
- FIG. 11 is a cross-sectional view illustrating the structure of a conventional electrodynamic type small speaker.
- FIGS. 1A and 1B An outline of the configuration of the speaker according to Embodiment 1 of the present invention is shown in FIGS. 1A and 1B.
- FIG. 1A is a plan view of speaker 110 according to Embodiment 1
- FIG. 1B is a diagram showing a cross section taken along line AA in FIG. 1A.
- the speaker 110 in the first embodiment includes a casing 111, a magnet 11, a plate 12, a voice coil 15, a diaphragm 16, and a suspension 17.
- the outer diameter of the speaker 110 is, for example, about 5 mm to 10 mm.
- the speaker 110 in the first embodiment is configured as follows.
- the housing 111 includes a yoke 10 and a yoke cover 19 that closes an opening formed by the upper edge of the side wall of the yoke 10, and the yoke cover 19 is provided with a sound hole 20.
- the plate 12 is attached to the upper surface of the magnet 11.
- a sound hole 13 is formed by holes formed in the yoke 10, the magnet 11, and the plate 12.
- the voice coil 15 is disposed in a magnetic gap 14 formed on the outer periphery of the plate 12 so as to vibrate in the vertical direction.
- a magnetic fluid 18 is filled between the plate 12 and the voice coil 15.
- the peripheral edge 16 b of the diaphragm 16 is joined to the upper end of the voice coil 15, and vibrates as the voice coil 15 vibrates.
- the suspension 17 is installed so as to connect the diaphragm 16 and the casing 111.
- the suspension 17 includes a first fixing portion 21 that is a portion fixed to the diaphragm 16 and a second fixing portion 22 that is a portion fixed to the housing 111. Further, as shown in FIG. 1B, the second fixing portion 22 is located above the first fixing portion 21.
- the diaphragm 16 is provided with a concave portion 16a having a shape corresponding to the first fixing portion 21, and the first fixing portion 21 is fixed to the concave portion 16a.
- the second fixing portion 22 is sandwiched between the side wall portion of the yoke 10 and the yoke cover 19.
- At least one of the first fixed portion 21 and the second fixed portion 22 is disposed in an inner region that is a region corresponding to the inner side of the peripheral edge portion 16b of the diaphragm 16 in a top view.
- FIG. 2 is a schematic diagram for explaining the arrangement positions of the first fixing portion 21 and the second fixing portion 22 in the first embodiment.
- the suspension 17 is divided into a plurality of portions extending radially when viewed from above.
- the suspension 17 is divided into four parts [1] to [4], and each part has a second fixing part 22.
- the first fixing portion 21 is disposed in the inner region D1 that is a region corresponding to the inner side of the peripheral edge portion 16b, and the second fixing portion 22 is disposed in the outer region D2 that is a region surrounding the inner region D1. ing.
- the speaker 110 according to the first embodiment is illustrated and described in the case where the side on which the diaphragm 16 is disposed with respect to the magnet 11 is “up”. In this case, the vibration direction of the diaphragm 16 is the vertical direction. However, no matter what direction the speaker 110 is facing, there is no substantial change in the effects of the speaker 110. This is the same in other embodiments.
- the speaker 110 configured as described above will be described.
- the voice coil 15 vibrates according to the Fleming left-hand rule. Since the voice coil 15 is joined to the diaphragm 16, sound waves are generated from the diaphragm 16.
- the length of the suspension 17 outside the diaphragm 16 in the top view can be made shorter than before.
- the speaker 110 is not reduced without reducing the area of the diaphragm 16 and without shortening the length of the suspension 17 (the length in the direction from the first fixing portion 21 to the second fixing portion 22, hereinafter the same).
- the outer diameter can be reduced.
- the length of the suspension 17 can be made longer than that of a conventional speaker structure. As a result, the stiffness of the suspension 17 is reduced, so that the lowest resonance frequency is reduced, thereby realizing low-frequency reproduction on the speaker 110 that is a small speaker.
- the increase in the length of the suspension can suppress an increase in distortion caused by the nonlinearity of the supporting force with respect to the diaphragm 16 by the suspension 17.
- At least a part of the suspension 17 between the first fixing portion 21 and the second fixing portion 22 is curved in a direction parallel to the vertical direction. This also effectively suppresses distortion caused by the nonlinearity of the support force of the suspension 17 with respect to the diaphragm 16.
- the suspension 17 is divided into a plurality of portions extending radially when viewed from above, and each of these portions has a second fixing portion 22.
- the magnetic fluid 18 is held between the plate 12 and the voice coil 15 by the magnetic field generated in the magnetic gap 14. Therefore, even when the diaphragm 16 vibrates greatly, the diaphragm 16 can vibrate stably without contacting the yoke 10 and the plate 12 due to the viscosity of the magnetic fluid 18.
- the support position of the diaphragm 16 is two points, that is, the support part of the voice coil 15 by the magnetic fluid 18 and the support part by the second fixing part 22 of the suspension 17, and the diaphragm 16 between these two points.
- the interval in the vibration direction is relatively long. Therefore, for example, even when the diaphragm 16 has a large amplitude during low-pitched sound reproduction, the diaphragm 16 is stably supported, which can prevent the diaphragm 16 from vibrating abnormally due to a rolling phenomenon or the like. Become.
- the side wall portion of the yoke 10 extends in the vertical direction on the side of the plate 12. Therefore, the symmetry of the magnetic flux distribution that links the voice coil 15 is improved. As a result, the generation of distortion of the driving force acting on the voice coil 15 due to the nonlinearity of the magnetic flux density distribution can be reduced.
- the sound hole 13 provided at the center of the yoke 10, the magnet 11 and the plate 12 prevents the vacant space on the back surface (lower surface) of the diaphragm 16 from being sealed with the magnetic fluid 18. That is, the minimum resonance frequency of the speaker can be prevented from increasing due to the air stiffness in the empty room. Further, the sound from the sound hole 13 can be used as a reproduction sound of the speaker.
- the second fixing portion 22 is sandwiched between the side wall portion of the yoke 10 and the yoke cover 19. That is, by attaching the yoke cover to the yoke, the end portion (second fixing portion 22) of the suspension 17 on the casing 111 side is fixed, so that, for example, the speaker assembly process can be simplified.
- the three-dimensional shape of the diaphragm 16 is a dome shape as shown in FIG. 1B, for example, the rigidity of the diaphragm 16 as a whole can be improved. Even when the thickness of the diaphragm 16 is reduced, a predetermined rigidity can be maintained.
- a concave portion 16 a having a shape corresponding to the first fixing portion 21 is provided in the central portion of the dome-shaped diaphragm 16.
- the concave portion 16a allows the first fixing portion 21 to be attached to the diaphragm 16 with high accuracy and ease.
- the diaphragm 16 may not have the recess 16a.
- the first fixing portion 21 of the suspension 17 is preferably formed into a curved shape that follows the dome shape of the diaphragm 16.
- the suspension 17 has a roll shape as a whole as shown in FIG. 1B.
- the shape can be given any allowance for expansion and contraction in the amplitude direction. Also good.
- the suspension 17 may have a corrugated cross-sectional shape as a whole.
- the first fixing portion 21 is disposed at the central portion of the diaphragm 16, but may be disposed in any one of the inner regions D ⁇ b> 1 (see FIG. 2) of the diaphragm 16.
- the second fixing portion 22 may be disposed not in the outer region D2 but in the inner region D1.
- the second fixing portion 22 may be disposed in the vicinity of the magnetic fluid 18 on the inner surface of the yoke cover 19.
- the second fixing portion 22 may be fixed to the position on the inner surface of the yoke cover 19 with, for example, an adhesive.
- the second fixing portion 22 does not need to be in contact with the inner surface of the yoke cover 19.
- the second fixing portion 22 is fixed to the housing 111 so as to be embedded in the side wall portion of the yoke 10. May be.
- FIGS. 3A and 3B An outline of the configuration of the speaker according to Embodiment 2 of the present invention is shown in FIGS. 3A and 3B.
- symbol is used about the same component as FIG. 1A and FIG. 1B, and description is abbreviate
- FIG. 3A is a plan view of the speaker 120 according to the second embodiment
- FIG. 3B is a diagram showing a cross section along AA in FIG. 3A.
- FIG. 3A a part of the yoke cover 19 is not shown so that a part of the internal suspension 26 is shown.
- the speaker 120 includes a suspension 26, a first fixing portion 24 that is a portion fixed to the diaphragm 23 of the suspension 26, and a second fixing portion that is a portion fixed to the yoke cover 19 of the suspension 26. 25.
- suspension 26 is divided into a plurality of portions extending radially in a top view, similar to the suspension 17 in the first embodiment.
- each of the plurality of portions has the first fixing portion 24.
- the operation of the speaker 120 configured as described above will be described.
- the mechanism by which sound is generated from the diaphragm 23 when an electrical signal is applied to the voice coil 15 is the same as in the first embodiment.
- the speaker 120 of the second embodiment is greatly different from the speaker 110 of the first embodiment in that the second fixing portion 25 is fixed to the yoke cover 19.
- the second fixing portion 25 of the suspension 26 is provided inside the peripheral edge portion 23 a of the diaphragm 23. More specifically, the second fixing portion 25 is disposed in an inner region that is an inner region of the peripheral edge portion 23a of the diaphragm 23 in a top view. More specifically, the second fixing portion 25 is disposed at a position in contact with the central portion of the inner surface of the yoke cover 19.
- first fixing portion 24 is disposed in an outer region surrounding the inner region in a top view.
- the ratio of the diaphragm area to the outer diameter of the speaker 120 is set to be higher than the ratio in the first embodiment. Can be made even larger.
- the speaker 120 has a relatively small diameter, the efficiency of audio output can be improved. Or even if it is the same diaphragm area as Embodiment 1, since the outer diameter of the speaker 120 can be made smaller than the speaker 110, the further miniaturized speaker 120 is implement
- the first fixing portion 24 is disposed on the peripheral portion 23a of the diaphragm.
- the first fixing portion 24 may be disposed anywhere on the diaphragm. That is, the first fixing portion 24 may be disposed in the inner region of the diaphragm 23.
- FIGS. 4A and 4B An outline of the configuration of the speaker according to Embodiment 3 of the present invention is shown in FIGS. 4A and 4B.
- FIG. 4A is a plan view of speaker 130 according to Embodiment 3
- FIG. 4B is a diagram showing a cross section taken along line AA in FIG. 4A.
- FIG. 4A a part of the yoke cover 39 is not shown so that a part of the internal suspension 37b is shown.
- the speaker 130 includes a housing 131 composed of a yoke 30 and a yoke cover 39, a magnet 31, a plate 32, a sound hole 33, a magnetic gap 34 formed on the outer periphery of the plate 32, and a magnetic gap 34.
- Suspensions 37a and 37b having a roll-shaped cross section provided in a straight line so as to face both short sides of the voice coil 35, the rectangular diaphragm 36, and the rectangular diaphragm 36, which are arranged so as to vibrate vertically.
- a magnetic fluid 38 filled between the plate 32 and the voice coil 35 in the magnetic gap 34 is provided.
- a sound hole 100 is provided in the yoke cover 39.
- Each of the suspensions 37a and 37b includes a first fixing portion 101 that is a portion that is fixed to the diaphragm 36, and a second fixing portion 102 that is a portion that is fixed to the housing 131.
- first fixing portion 101 is disposed in an inner region that is an inner region of the peripheral portion 36a of the diaphragm 36 in a top view, and the second fixing portion 102 is located outside the inner region in the top view. Arranged to be an area.
- the second fixing portion 102 is sandwiched between the side wall portion of the yoke 30 and the yoke cover 39.
- the operation of the speaker 130 configured as described above will be described.
- the mechanism by which sound is generated from the diaphragm 36 when an electrical signal is applied to the voice coil 35 is the same as in the first embodiment.
- the speaker 130 of the third embodiment is greatly different from the speaker 110 of the first embodiment in that the shape of the diaphragm 36 in a top view is long.
- the shape of the diaphragm 36 in a top view is a rectangle.
- the suspension that supports the diaphragm 36 is provided as suspensions 37 a and 37 b that are divided and arranged on both short sides of the diaphragm 36.
- the suspensions 37a and 37b are an example of two members obtained by dividing one suspension into a plurality of radially extending portions.
- the suspensions 37a and 37b are three-dimensionally arranged on the diaphragm 36. Therefore, for example, the size of the diaphragm 36 in the long side direction can be reduced as compared with a conventional speaker using a divided suspension disposed along the outer edge on the short side of the diaphragm 36.
- the length of the suspensions 37a and 37b (length in the X-axis direction) can be increased as compared with the conventional structure. For this reason, it is possible to suppress the non-linearity of the support force of the suspensions 37a and 37b with respect to the diaphragm 36 and the increase in stiffness. As a result, it is possible to suppress distortion and reduce the minimum resonance frequency.
- the suspensions 37a and 37b are divided and arranged facing the short side of the diaphragm 36, but may be arranged facing the long side.
- the effective area of the diaphragm 36 is smaller than that disposed on the short side, but the length of the suspensions 37a and 37b that support the diaphragm 36 is increased, so that the diaphragm is supported more stably. Can do.
- each of the suspensions 37a and 37b may be arranged in the same manner as in the second embodiment. That is, in the top view, the first fixing portion 101 may be disposed in the outer region, and the second fixing portion 102 may be disposed in the inner region.
- both the first fixing part 101 and the second fixing part 102 may be arranged in the inner region in a top view.
- the speaker 130 that can achieve both low-frequency reproduction and downsizing.
- the diaphragm 36 may be long when viewed from above, and may have a shape other than a rectangle.
- the shape of the vibration plate 36 in a top view may be, for example, a shape with rounded rectangular corners or an ellipse.
- the three-dimensional shape of the housing 131 need not be a rectangular parallelepiped as shown in FIGS. 4A and 4B, and may be a long and thin shape as a whole.
- the diaphragm 36 is long, for example, a small speaker 130 that is long and thin in a direction orthogonal to the vibration direction of the diaphragm 36 can be realized.
- the hearing aid or inner ear headphones can be configured such that the diaphragm 36 is inserted into the ear canal when worn. As a result, since the effective vibration area inside the ear canal is improved, for example, the voice transmitted to the user can be clarified.
- a hearing aid 150 equipped with the speaker 110 according to the first embodiment will be described.
- FIG. 5 is a diagram illustrating an example of the appearance of the hearing aid 150 according to the fourth embodiment.
- FIG. 5 the external appearance of the state which the hearing aid 150 was mounted
- the hearing aid 150 shown in FIG. 5 includes a receiver unit 40, a lead tube 41, and a hearing aid main body 43.
- FIG. 6 is an enlarged cross-sectional view of the receiver unit 40 in the hearing aid 150 shown in FIG.
- the receiver unit 40 includes an ear tip 45, a vent hole 44, an ear tip coupling unit 46, a receiver 47, and a lead tube coupling unit 48.
- the speaker 110 in the first embodiment is adopted as the receiver 47, but the details of the speaker 110 are as described in the first embodiment, and a description thereof is omitted here.
- the cross section when the speaker 110 is adopted as the sound output device in the inner ear headphones is also the same as the cross sectional structure shown in FIG. 6, for example, and the inner ear headphones are equipped with ear chips or the like for wearing to the user. .
- the hearing aid 150 using the speaker 110 can be roughly divided into two components.
- One is a hearing aid main body 43 that is attached to the ear so as to be located above the auricle 42 and behind the auricle 42, and the other is a receiver unit 40 that is located inside at least one of the ear canal opening and the ear canal opening. It is.
- a microphone arranged in the hearing aid main body 43 converts the input sound into an input acoustic signal and transmits the input sound signal to a signal processing unit included in the hearing aid main body 43.
- the signal processing unit the input acoustic signal is processed and an output acoustic signal is generated.
- the generated output acoustic signal is transmitted to the receiver 47 through the lead tube 41.
- the receiver 47 converts the output acoustic signal into an output sound, and reproduces the output sound from the diaphragm 16 through the sound hole 13 and the ear chip 45 to the user.
- the receiver 47 in the present embodiment operates as a speaker that reproduces an output acoustic signal in the hearing aid 150.
- the diaphragm 16 and the suspension 17 are three-dimensionally arranged in the receiver 47 (speaker 110) (see, for example, FIG. 1B), so that the outer diameter of the receiver 47 is made smaller than before.
- the length of the suspension 17 can be increased compared to the conventional structure. Therefore, the stiffness of the suspension 17 can be reduced, and as a result, the lowest resonance frequency is lowered. That is, even if it is an open fitting type, the high-quality hearing aid 150 that can reproduce a sufficiently low sound range is realized.
- the hearing aid 150 may include the speaker 120 of the second embodiment or the speaker 130 of the third embodiment as the receiver 47 instead of the speaker 110 of the first embodiment.
- the hearing aid 150 when the hearing aid 150 includes the speaker 130 of the third embodiment as the receiver 47, the hearing aid 150 can be configured such that the diaphragm 36 is inserted into the ear canal when worn as described above.
- any of the speakers 110, 120, and 130 may be adopted as a sound output device in the inner ear headphones.
- FIG. 7 is a diagram illustrating an example of the appearance of the mobile phone 160 according to the fifth embodiment. Note that the cellular phone 160 shown in FIG. 5 is an example of the portable information processing apparatus of the present invention.
- the mobile phone 160 shown in FIG. 7 includes an upper housing 50, a lower housing 51, a liquid crystal screen 52, a hinge portion 53, a speaker 54, and a sound hole 55.
- the mobile phone 160 shown in FIG. 7 is a foldable type whose main body is composed of an upper housing 50 and a lower housing 51.
- the upper housing 50 and the lower housing 51 are connected so as to be rotatable around a hinge portion 53.
- the upper casing 50 is provided with a liquid crystal screen 52 on the front.
- the speaker 54 is disposed inside the upper housing 50 and at the upper end of the liquid crystal screen 52.
- the speaker 110 is mounted such that the sound hole 13 or the sound hole 20 shown in FIG. 1B is connected to the sound hole 55 of the upper housing 50 of FIG.
- speaker 120 of the second embodiment or the speaker 130 of the third embodiment may be employed as the speaker 54.
- a signal received by the antenna is processed by a signal processing unit and input to the speaker 54 as a reception signal, and the reception sound is reproduced by the speaker 54.
- the antenna and the signal processing unit are provided in the mobile phone 160 as basic components.
- the speaker 54 is a speaker that reproduces the received sound by the mobile phone 160, and operates as an acoustic transducer called a receiver.
- the receiver Since the liquid crystal screen of a general mobile phone in recent years is large, the receiver is mounted near the upper outer frame of the housing. As a result, it has become difficult to use the device in a state close to sealing by closing the ear with a housing so that sound emitted from the receiver does not leak outside.
- the sound pressure level is lowered below the lowest resonance frequency of the receiver, making it difficult to reproduce at low frequencies.
- the mobile phone 160 in the present embodiment it is possible to lower the minimum resonance frequency of the receiver (for example, the speaker 110).
- the sound pressure level is hardly reduced to the lowest resonance frequency.
- the lowest resonance frequency is set to around 300 Hz, this A flat sound pressure characteristic is realized up to the frequency band.
- the received sound quality of the received sound is greatly improved as compared with the conventional mobile phone.
- the cellular phone 160 of the present embodiment has high utility as a recent cellular phone in which the mounting position of the receiver is brought closer to the upper surface of the housing due to the enlargement of the liquid crystal screen.
- the mobile phone 160 has high practicality as a fourth-generation mobile phone in which the low-frequency reproduction band of the call signal is scheduled to be greatly expanded.
- FIG. 8 is a diagram showing an example of the appearance of the flat-screen television 170 in the sixth embodiment.
- FIG. 8 is an example of an AV apparatus according to the present invention, and includes a television casing 60, a display unit 61, and a speaker 200 in which a plurality of speaker units are arranged in a grid pattern.
- the display unit 61 is realized by, for example, a PDP (Plasma Display Panel), a liquid crystal display panel, or an organic EL display panel.
- the speaker 200 is provided inside the television housing 60, for example, on both sides of the display unit 61.
- FIG. 9A is a plan view of the speaker 200 according to Embodiment 6, and FIG. 9B is a diagram showing a cross section along AA in FIG. 9A.
- FIG. 10 is a partially enlarged view in which a part of the cross section shown in FIG. 9B is enlarged.
- the speaker 200 includes a casing 201 composed of a yoke 63 and a yoke cover 72 whose plane portions are enlarged, and a plurality of speaker units 210 arranged side by side in the casing 201.
- a sound hole 73 is provided in the yoke cover 72.
- Each of the plurality of speaker units 210 includes a magnet 64, a plate 65, a sound hole 66, a magnetic gap 67 formed on the outer periphery of the plate 65, a voice coil 68 held in the magnetic gap 67, a diaphragm 69, a suspension 70, The magnetic fluid 71 is filled between the plate 65 and the voice coil 68.
- the structure of the speaker unit 210 in the present embodiment is the same as the internal structure of the housing 111 of the speaker 120 (see FIG. 3B) in the second embodiment, but the speaker 110 (see FIG.
- the structure may be the same as the internal structure of the casing 111 of 1B).
- the diaphragm 69 provided in the speaker unit 210 may have a long shape in a top view like the diaphragm 36 in the third embodiment.
- a magnetic circuit is configured by the plate 65, the magnet 64, and the yoke 63 at a portion facing the side wall portion of the yoke 63, and at two other portions by the two adjacent plates 65 and the magnet 64.
- a magnetic circuit is configured.
- the adjacent magnets 64 are magnetized so that they are opposite to each other.
- the magnetic gap 67 formed between adjacent plates 65 is referred to as a shared magnetic gap 67a.
- each of the two adjacent voice coils 68 is disposed in a shared magnetic gap 67a formed between the two adjacent plates 65.
- the speaker 200 having such a configuration can effectively utilize the magnetism of the adjacent magnet 64 to vibrate the adjacent voice coil 68.
- the sound signal processed by the signal processing unit is input to the left and right speakers 200, whereby sound is reproduced from each speaker unit 210.
- each diaphragm 69 can be driven in the same phase by reversing the direction of the current flowing in the adjacent voice coil 68.
- the diaphragm area when the diaphragm area is reduced, the sound pressure level in the low range decreases, so to obtain a desired sound pressure level in the low range where a large amplitude is required, a large input is applied to the voice coil, and the diaphragm Needed to have a large amplitude.
- the voice coil may be damaged due to a temperature rise.
- the speaker 200 can be realized in any slim shape by adopting a structure in which a plurality of speaker units 210 shown in FIGS. 9A to 10 are arranged in a lattice shape.
- the speaker 200 does not require the wall surface of the yoke 63 between the adjacent speaker units 210. Therefore, the number of diaphragms arranged per unit area (in other words, the effective vibration area per unit area) can be increased, and as a result, the efficiency of the sound output of the speaker 200 can be improved. .
- the amplitude of the diaphragm 69 is greatly increased when the desired reproduction volume is obtained with the speaker 200 as compared with the case where the desired reproduction volume is obtained with the conventional speaker. Can be suppressed.
- each suspension 70 can be made larger than the suspension in a speaker having a conventional structure, the lowest resonance frequency of the speaker 200 can be lowered.
- the low frequency reproduction is achieved by combining the lowering effect of the minimum resonance frequency and the holding action on the voice coil 68 due to the viscosity of the magnetic fluid 71 filled in the magnetic gap 67.
- An excellent thin-screen television speaker is realized.
- directivity can be controlled by controlling each speaker 200 in the flat-screen television 170.
- the plurality of speaker units 210 do not need to be arranged in a lattice pattern in the speaker 200, and may be arranged in a straight line or a curved line, for example.
- the speaker 200 only needs to include at least two speaker units 210. That is, by arranging the two speaker units 210 so as to be adjacent to each other, various effects such as low-pitched sound reproduction that the individual speaker units 210 have are exhibited, and an efficient voice in the shared magnetic gap 67a. The effects of the plurality of speaker units 210 such as driving of the coil 68 are also exhibited.
- the speaker, the hearing aid, the inner ear headphones, the portable information processing device, and the AV device according to the present invention have been described based on the first to sixth embodiments.
- the present invention is not limited to the above embodiments. Unless it deviates from the gist of the present invention, various modifications conceived by those skilled in the art have been made in each embodiment, or forms constructed by combining a plurality of constituent elements described above are within the scope of the present invention. include.
- the plurality of speaker units 210 need not have the same configuration.
- a speaker unit 210 having the same configuration as the speaker 110 of Embodiment 1 and a speaker unit 210 having the same configuration as the speaker 120 of Embodiment 2 may be mixed.
- any of the speakers 110, 120, and 130 may be provided in an AV device such as the flat-screen television 170 of the sixth embodiment.
- the speaker 200 may be provided in a portable information processing device such as the cellular phone 160 of the fifth embodiment.
- the speaker 110 may not include the magnetic fluid 18 as long as the voice coil 15 is arranged to vibrate in the vertical direction on the outer periphery of the plate 12.
- the other speakers 120, 130, and 200 that the magnetic fluid is not essential.
- the mobile phone 160 is exemplified as the portable information processing apparatus including the speaker according to any aspect of the present invention.
- the portable information processing device of the present invention can be realized as various portable devices other than a cellular phone, such as a portable personal computer.
- the AV device of the present invention can also be realized as various devices other than a television, such as a radio receiver.
- the outer diameter of the speaker can be reduced without reducing the diaphragm area and without shortening the length of the suspension. be able to.
- the suspension can be made longer than the conventional structure, non-linearity of support force and increase in stiffness due to the suspension can be suppressed, and as a result, distortion can be suppressed and the minimum resonance frequency can be reduced. Can do.
- the speaker of the present invention can reproduce a low frequency range even if its shape is small and slim, such as an open fitting type hearing aid and an inner ear headphone, and a mobile phone that cannot keep the receiver closed.
- a portable terminal device it can be realized as a small receiver capable of reproducing a low sound range.
- the speaker of the present invention as a speaker of an audio device such as a thin-screen television having a liquid crystal display panel, a PDP, or an organic EL display panel that is becoming thinner, an audio device capable of high-quality low-frequency reproduction. Can be realized.
Landscapes
- Engineering & Computer Science (AREA)
- Multimedia (AREA)
- Physics & Mathematics (AREA)
- Acoustics & Sound (AREA)
- Signal Processing (AREA)
- Audible-Bandwidth Dynamoelectric Transducers Other Than Pickups (AREA)
- Diaphragms For Electromechanical Transducers (AREA)
Abstract
Description
(i)前記複数の部分のそれぞれは、前記第一固着部を有する、または、(ii)前記複数の部分のそれぞれは、前記第二固着部を有するとしてもよい。
本発明の実施の形態1におけるスピーカの構成概要を図1Aおよび図1Bに示す。
本発明の実施の形態2におけるスピーカの構成概要を図3Aおよび図3Bに示す。これら3Aおよび図3Bにおいて、図1Aおよび図1Bと同じ構成要素については同じ符号を用い、説明を省略する。
本発明の実施の形態3におけるスピーカの構成概要を図4Aおよび図4Bに示す。
次に、本発明のいずれかの態様に係るスピーカを搭載した機器の例を説明する。
次に、実施の形態5として、本発明のいずれの態様に係るスピーカを搭載した携帯端末装置の一例を説明する。
次に、実施の形態6として、本発明のいずれの態様に係るスピーカを搭載した薄型テレビの一例を説明する。
2、11、31、64 マグネット
3、12、32、65 プレート
4、15、35、68 ボイスコイル
5、16、23、36、69 振動板
6、18、38、71 磁性流体
7、17、26、37a、37b、70 サスペンション
13、20、33、55、66、73、100 音孔
14、34、67 磁気空隙
16a 凹部
16b、23a、36a 周縁部
19、39、72 ヨークカバー
21、24、101 第一固着部
22、25、102 第二固着部
40 レシーバ部
41 リードチューブ
43 補聴器本体
44 通気孔
45 イヤーチップ
46 イヤーチップ結合部
47 レシーバ
48 リードチューブ結合部
50 上部筐体
51 下部筐体
52 液晶画面
53 ヒンジ部
54、110、120、130、200 スピーカ
60 テレビ筐体
61 ディスプレイ部
67a 共有磁気空隙
111、131、201 筐体
150 補聴器
160 携帯電話機
170 薄型テレビ
210 スピーカユニット
Claims (17)
- 内部にマグネットを有する筐体と、
前記マグネットの上面に取り付けられたプレートと、
前記プレートの外周に形成された磁気空隙に、上下方向に振動可能に配置されたボイスコイルと、
周縁部が前記ボイスコイルの上端と接合された振動板と、
前記振動板と前記筐体とを接続するサスペンションとを備え、
前記サスペンションは、前記振動板に固着された部分である第一固着部と、前記筐体と固着された部分である第二固着部とを有し、
前記第二固着部は、前記第一固着部よりも上方に位置し、
前記第一固着部および前記第二固着部の少なくとも一方は、上面視において、前記振動板の前記周縁部より内側に相当する領域である内側領域に配置されている
スピーカ。 - 前記第一固着部は、前記振動板における前記内側領域を囲む領域である外側領域に配置され、前記第二固着部は、前記筐体における前記内側領域に配置されている
請求項1記載のスピーカ。 - 前記第一固着部は、前記振動板における前記内側領域に配置され、前記第二固着部は、前記筐体における前記内側領域を囲む領域である外側領域に配置されている
請求項1記載のスピーカ。 - 前記筐体は、前記マグネット、前記プレート、および前記ボイスコイルを囲うように設けられた側壁部を有するヨークを有し、
前記第二固着部は、前記側壁部に接する位置に配置されている
請求項3記載のスピーカ。 - 前記筐体はさらに、前記側壁部の上端縁により形成された開口を覆うヨークカバーを有し、
前記第二固着部は、前記側壁部と前記ヨークカバーとの間に挟みこまれている
請求項4記載のスピーカ。 - 前記振動板は、前記内側領域に、前記第一固着部に対応した形状の凹部を有する
請求項3~5のいずれか1項に記載のスピーカ。 - 前記筐体は、前記マグネットが接合された底部と前記マグネットを囲うように設けられた側壁部とを有するヨークと、前記側壁部の上端縁により形成された開口を覆うヨークカバーとを備え、
前記第二固着部は、前記ヨークカバーの内側の面と接する位置に配置されている
請求項2または3に記載のスピーカ。 - 前記サスペンションの、前記第一固着部と前記第二固着部との間における少なくとも一部は、前記上下方向に平行な方向に湾曲している
請求項1~7のいずれか1項に記載のスピーカ。 - 前記サスペンションは、上面視において放射状に延設された複数の部分に分割されており、
(i)前記複数の部分のそれぞれは、前記第一固着部を有する、または、(ii)前記複数の部分のそれぞれは、前記第二固着部を有する
請求項1~8のいずれか1項に記載のスピーカ。 - 前記振動板の上面視における形状は長尺状である
請求項1~9のいずれか1項に記載のスピーカ。 - 前記振動板の立体形状はドーム状である
請求項1~10のいずれか1項に記載のスピーカ。 - さらに、前記ボイスコイルと前記プレートとの間に充填された磁性流体を備える
請求項1~11のいずれか1項に記載のスピーカ。 - 前記スピーカは、前記筐体内に並んで配置された2つのスピーカユニットであって、それぞれが、前記マグネット、前記プレート、前記ボイスコイル、前記振動板、および前記サスペンションを有する2つのスピーカユニットを備え、
隣接する2つの前記ボイスコイルそれぞれの一部は、前記磁気空隙の一部である共有磁気空隙であって、隣接する2つの前記プレートの間に形成された前記共有磁気空隙に配置されている
請求項1~12のいずれか1項に記載のスピーカ。 - 請求項1~12のいずれか1項に記載のスピーカを備える補聴器。
- 請求項1~12のいずれか1項に記載のスピーカを備えるインナーイヤーヘッドホン。
- 請求項1~13のいずれか1項に記載のスピーカを備える携帯型情報処理装置。
- 請求項1~13のいずれか1項に記載のスピーカを備えるAV(Audio and Visual)機器。
Priority Applications (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN201180002375.6A CN102474686B (zh) | 2010-04-14 | 2011-04-13 | 扬声器、助听器、内耳式耳机、便携型信息处理装置以及av设备 |
JP2011536227A JP5608667B2 (ja) | 2010-04-14 | 2011-04-13 | スピーカ、補聴器、インナーイヤーヘッドホン、携帯型情報処理装置、およびav機器 |
US13/377,622 US8699744B2 (en) | 2010-04-14 | 2011-04-13 | Speaker, hearing aid, inner-ear headphone, portable information processing device, and AV device |
EP11768631.1A EP2560409B8 (en) | 2010-04-14 | 2011-04-13 | Speaker, hearing aid, inner ear headphone, mobile information processing device, and av device |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2010093590 | 2010-04-14 | ||
JP2010-093590 | 2010-04-14 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2011129108A1 true WO2011129108A1 (ja) | 2011-10-20 |
Family
ID=44798491
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/JP2011/002178 WO2011129108A1 (ja) | 2010-04-14 | 2011-04-13 | スピーカ、補聴器、インナーイヤーヘッドホン、携帯型情報処理装置、およびav機器 |
Country Status (5)
Country | Link |
---|---|
US (1) | US8699744B2 (ja) |
EP (1) | EP2560409B8 (ja) |
JP (1) | JP5608667B2 (ja) |
CN (1) | CN102474686B (ja) |
WO (1) | WO2011129108A1 (ja) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP3700227A4 (en) * | 2017-10-19 | 2020-11-25 | Panasonic Intellectual Property Management Co., Ltd. | SPEAKER AND DIAPHRAGM UNIT |
JP7462021B2 (ja) | 2022-01-21 | 2024-04-04 | エーエーシー マイクロテック(チャンヂョウ)カンパニー リミテッド | スピーカ |
Families Citing this family (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2013232777A (ja) * | 2012-04-27 | 2013-11-14 | Toshiba Corp | テレビジョン受像機および電子機器 |
US9078059B2 (en) * | 2012-08-07 | 2015-07-07 | Jabil Circuit (Beijing), Ltd. | Transducer |
CN103052013B (zh) * | 2012-12-25 | 2015-05-27 | 苏州恒听电子有限公司 | 一种可以延长待机时间的受话器及其组装方法 |
JP6399390B2 (ja) * | 2013-12-27 | 2018-10-03 | パナソニックIpマネジメント株式会社 | スピーカおよびav機器 |
US9628903B2 (en) | 2014-12-23 | 2017-04-18 | Bose Corporation | Microspeaker acoustical resistance assembly |
KR101900860B1 (ko) * | 2016-12-20 | 2018-09-21 | 이성수 | 스피커 |
US10595111B2 (en) | 2017-03-20 | 2020-03-17 | Bose Corporation | Earbud frame for acoustic driver and complimentary ear tip |
WO2020198964A1 (zh) * | 2019-03-29 | 2020-10-08 | 美特科技(苏州)有限公司 | 一种扬声器及其应用 |
CN110933567B (zh) * | 2019-12-02 | 2021-07-09 | 歌尔股份有限公司 | 一种振动发声装置 |
Citations (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS62241499A (ja) * | 1986-04-12 | 1987-10-22 | Matsushita Electric Ind Co Ltd | スピ−カ |
JPH04111597A (ja) * | 1990-08-30 | 1992-04-13 | Sharp Corp | 動電型スピーカ |
JP2005522919A (ja) | 2002-04-11 | 2005-07-28 | 株式会社フェローテック | マイクロスピーカーおよびマイクロスピーカーの組み立て方法 |
JP2005524309A (ja) * | 2002-04-25 | 2005-08-11 | コーニンクレッカ フィリップス エレクトロニクス エヌ ヴィ | 第1及び第2ダイヤフラム体を有するラウドスピーカー |
JP2005536931A (ja) * | 2002-08-21 | 2005-12-02 | ワイ セユーン ジョゼフ | ラジエーター屈曲最小化及びボイスコイル弾性ウォブル防止部材を備えたオーディオラジエーター |
JP2006191252A (ja) * | 2005-01-05 | 2006-07-20 | Minebea Co Ltd | スピーカ |
JP2009010806A (ja) * | 2007-06-29 | 2009-01-15 | Citizen Electronics Co Ltd | 電気音響変換器 |
JP2009246739A (ja) * | 2008-03-31 | 2009-10-22 | Victor Co Of Japan Ltd | 振動板及び電気音響変換装置 |
Family Cites Families (12)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE19610997B4 (de) | 1996-03-21 | 2006-07-13 | Sennheiser Electronic Gmbh & Co. Kg | Elektrodynamischer Schallwandler mit Magnetspaltenabdichtung und Hörhilfe |
DE19837391A1 (de) | 1997-08-22 | 1999-02-25 | Hoffmann La Roche | Immunologische Materialien und Verfahren zum Nachweis von Dihydropyrimidindehydrogenase |
US6868167B2 (en) | 2002-04-11 | 2005-03-15 | Ferrotec Corporation | Audio speaker and method for assembling an audio speaker |
US20040223423A1 (en) | 2002-04-11 | 2004-11-11 | Shiro Tsuda | Optical pick-up actuator and method for assembling an optical pick-up actuator |
US7197154B2 (en) | 2002-08-21 | 2007-03-27 | Sahyoun Joseph Y | Method and audio speaker with minimization of wobble of the voice coil |
US20050117772A1 (en) * | 2003-12-02 | 2005-06-02 | Merry Electronics Co., Ltd. | Thin type speaker having a damper |
KR100799008B1 (ko) * | 2004-03-31 | 2008-01-28 | 마쯔시다덴기산교 가부시키가이샤 | 스피커와, 이를 이용한 모듈, 전자 기기 및 장치, 스피커의제조 방법 |
JP4576991B2 (ja) * | 2004-11-22 | 2010-11-10 | パナソニック株式会社 | 振動板とそれを用いたスピーカ |
JP4611051B2 (ja) * | 2005-02-09 | 2011-01-12 | シチズン電子株式会社 | マイクロスピーカの製造方法 |
JP4912922B2 (ja) * | 2007-02-28 | 2012-04-11 | ミネベア株式会社 | スピーカ |
US20090016563A1 (en) * | 2007-07-14 | 2009-01-15 | Aurasound, Inc. | Micro-speaker |
CN101584225B (zh) * | 2007-11-20 | 2013-11-06 | 松下电器产业株式会社 | 扬声器、视频设备、以及便携式信息处理装置 |
-
2011
- 2011-04-13 JP JP2011536227A patent/JP5608667B2/ja active Active
- 2011-04-13 CN CN201180002375.6A patent/CN102474686B/zh active Active
- 2011-04-13 EP EP11768631.1A patent/EP2560409B8/en active Active
- 2011-04-13 WO PCT/JP2011/002178 patent/WO2011129108A1/ja active Application Filing
- 2011-04-13 US US13/377,622 patent/US8699744B2/en active Active
Patent Citations (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS62241499A (ja) * | 1986-04-12 | 1987-10-22 | Matsushita Electric Ind Co Ltd | スピ−カ |
JPH04111597A (ja) * | 1990-08-30 | 1992-04-13 | Sharp Corp | 動電型スピーカ |
JP2005522919A (ja) | 2002-04-11 | 2005-07-28 | 株式会社フェローテック | マイクロスピーカーおよびマイクロスピーカーの組み立て方法 |
JP2005524309A (ja) * | 2002-04-25 | 2005-08-11 | コーニンクレッカ フィリップス エレクトロニクス エヌ ヴィ | 第1及び第2ダイヤフラム体を有するラウドスピーカー |
JP2005536931A (ja) * | 2002-08-21 | 2005-12-02 | ワイ セユーン ジョゼフ | ラジエーター屈曲最小化及びボイスコイル弾性ウォブル防止部材を備えたオーディオラジエーター |
JP2006191252A (ja) * | 2005-01-05 | 2006-07-20 | Minebea Co Ltd | スピーカ |
JP2009010806A (ja) * | 2007-06-29 | 2009-01-15 | Citizen Electronics Co Ltd | 電気音響変換器 |
JP2009246739A (ja) * | 2008-03-31 | 2009-10-22 | Victor Co Of Japan Ltd | 振動板及び電気音響変換装置 |
Non-Patent Citations (1)
Title |
---|
See also references of EP2560409A4 * |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP3700227A4 (en) * | 2017-10-19 | 2020-11-25 | Panasonic Intellectual Property Management Co., Ltd. | SPEAKER AND DIAPHRAGM UNIT |
JP7462021B2 (ja) | 2022-01-21 | 2024-04-04 | エーエーシー マイクロテック(チャンヂョウ)カンパニー リミテッド | スピーカ |
Also Published As
Publication number | Publication date |
---|---|
US20120087525A1 (en) | 2012-04-12 |
US8699744B2 (en) | 2014-04-15 |
JP5608667B2 (ja) | 2014-10-15 |
CN102474686A (zh) | 2012-05-23 |
JPWO2011129108A1 (ja) | 2013-07-11 |
EP2560409B1 (en) | 2015-07-08 |
CN102474686B (zh) | 2015-11-25 |
EP2560409B8 (en) | 2015-10-07 |
EP2560409A4 (en) | 2013-12-11 |
EP2560409A1 (en) | 2013-02-20 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
JP5608667B2 (ja) | スピーカ、補聴器、インナーイヤーヘッドホン、携帯型情報処理装置、およびav機器 | |
JP5879563B2 (ja) | スピーカ、補聴器、イヤホン及び携帯型端末装置 | |
JP6206730B2 (ja) | スピーカおよびそれを備える機器 | |
JP5441710B2 (ja) | スピーカ、映像機器、および携帯型情報処理装置 | |
JP6136016B2 (ja) | イヤホン | |
JP3935393B2 (ja) | スピーカおよび携帯端末装置 | |
JP5323097B2 (ja) | スピーカ、及び携帯型電子機器 | |
JP6021023B2 (ja) | スピーカ、スピーカを備えたインナーイヤーヘッドホンおよび補聴器 | |
US8135156B2 (en) | Sound reproduction device with enhanced low-frequency sound effect | |
JP2006033832A (ja) | ディスプレイウィンドウを利用したスピーカー装置 | |
US8548191B2 (en) | Loudspeaker magnet having a channel | |
US9584886B2 (en) | Micro-speaker | |
JP2005110216A (ja) | 音響再生装置および携帯端末装置 | |
WO2024000692A1 (zh) | 同轴扬声器 | |
JP2013157798A (ja) | スピーカ、補聴器、インナーイヤーヘッドホン、携帯型情報処理装置、およびav機器 | |
JP3896913B2 (ja) | スピーカおよびこれを用いたモジュールおよびこれを用いた電子機器 | |
JP2008113365A (ja) | 複合スピーカ装置 | |
KR20140115015A (ko) | 스피커 장치 | |
KR20030083774A (ko) | 자화필름을 이용한 고정형 코일구조를 갖는 단방향/양방향전기-음향 변환기 및 전기-음향 변환 방법 | |
KR20110117920A (ko) | 오디오 출력장치용 진동 유닛 | |
JP2003333686A (ja) | スピーカ | |
JP2003111190A (ja) | ドーム型トゥイータおよびそれを用いたスピーカシステム |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
WWE | Wipo information: entry into national phase |
Ref document number: 201180002375.6 Country of ref document: CN |
|
WWE | Wipo information: entry into national phase |
Ref document number: 2011536227 Country of ref document: JP |
|
121 | Ep: the epo has been informed by wipo that ep was designated in this application |
Ref document number: 11768631 Country of ref document: EP Kind code of ref document: A1 |
|
WWE | Wipo information: entry into national phase |
Ref document number: 2011768631 Country of ref document: EP |
|
WWE | Wipo information: entry into national phase |
Ref document number: 13377622 Country of ref document: US |
|
NENP | Non-entry into the national phase |
Ref country code: DE |