WO2003101148A1 - Haut-parleur a bague de renforcement du diaphragme - Google Patents
Haut-parleur a bague de renforcement du diaphragme Download PDFInfo
- Publication number
- WO2003101148A1 WO2003101148A1 PCT/JP2003/006700 JP0306700W WO03101148A1 WO 2003101148 A1 WO2003101148 A1 WO 2003101148A1 JP 0306700 W JP0306700 W JP 0306700W WO 03101148 A1 WO03101148 A1 WO 03101148A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- diaphragm
- ring
- speaker device
- flat portion
- shaped
- Prior art date
Links
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
-
- 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
-
- 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
- H04R9/04—Construction, mounting, or centering of coil
-
- 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
- H04R9/06—Loudspeakers
Definitions
- the present invention relates to a speaker device used for various kinds of audio equipment, video equipment, and the like, and more particularly to a speaker device in which the strength of a connection flat portion of an acoustic diaphragm is improved.
- the acoustic diaphragm of a conventional speaker device has, for example, a dome-shaped diaphragm 121 in the center as shown in Fig. 12 and a circular edge of the dome-shaped diaphragm 121.
- the cross-sectional shape has a predetermined concave or convex curvature, or the linear edge-shaped diaphragms 129 are integrally formed of a polymer film, metal, or the like.
- a voice-spin 1 2 2 wound with a voice coil 1 2 3 is suspended.
- a voice coil 123 serving as a driving means is vertically swingably disposed in a gap 127 forming a magnetic gap.
- the frame that constitutes the speaker is a ring-shaped magnet 124 disposed on a disk-shaped lower plate 135 made of metal, and stands substantially at the center of the lower plate 135.
- the cylindrical pole piece 125, the metal ring top plate 126 mounted and fixed on the magnet 124, and the outer peripheral edge of the edge diaphragm 122 Composed of fixed cylindrical frame 13 0, voice coil 1 2 3 arranged in gap 1 2 7 formed between inner circumference of top plate 1 2 6 and outer circumference of pole piece 1 2 5
- a sound signal is emitted by vibrating 120.
- FIG. 13 is an enlarged view of a portion A of FIG. 12, in which one end of the cylindrical bobbin 122 opposite to the side on which the voice coil 123 is wound is an acoustic diaphragm.
- the dome-shaped diaphragm 20 is bonded to the inner peripheral edge 13 of the dome diaphragm with adhesive 13 1.
- This acoustic diaphragm 120 is a connecting flat portion that forms a connecting portion bent at a right angle from the lower end of the inner peripheral edge portion 13 3 of the dome diaphragm falling from the edge of the dome-shaped diaphragm 12 1 3 2 is connected to the diaphragm edge 1 3 4 of the edge-shaped diaphragm 1 2 9 having a convex curved cross section or a straight cross section, and the diaphragm edge 1 3 4 is cylindrical.
- a conductive one-turn ring is wound in place of the voice coil 123 wound around the pobin 122 that operates as a driving means of the diaphragm, or a cylindrical shape is used.
- the upper end of the conductive one-turn ring with a uniform and uniform diameter is directly adhered to the inner peripheral part 133 of the dome diaphragm of the acoustic diaphragm 120 with an adhesive 13 1 Proposed.
- a bobbin 122 or conductive 1-turn ring as shown in Fig. 13 is adhered to the inner peripheral portion 133 of the dome diaphragm, and when an acoustic signal is input, it becomes thin at a predetermined frequency.
- the dome-shaped diaphragm 12 1 and the edge-shaped diaphragm 12 9 generate vibrations 180 degrees out of phase with the flat part 13 2 as a node having weak mechanical strength.
- the acoustic signal generated from the dome-shaped diaphragm 122 and the acoustic signal generated from the edge-shaped diaphragm 129 cancel each other, resulting in a sound pressure dip.
- this dip is in the audible band
- the quality of the acoustic signal is reduced.
- the driving force from the bobbin 122 or the conductive one-turn ring is applied to the adhesive 131 and the connection flats 132 with low mechanical strength. It will be absorbed more and will not be transmitted to the edge diaphragm 1 29. As a result, there was a problem that required sound pressure could not be obtained at frequencies higher than 20 kHz.
- the mechanical strength of the connecting flat part 1 32 is increased by applying the coating to the width of the connecting flat part 132 of the plate 120 and fixing the bobbin 122 to the connecting flat part 132. ing.
- the above publication discloses a case where a conductive one-turn ring 141 as shown in FIG. 15 is used as a driving means.
- Conductivity 1 turn ring The width t of its end face is larger than that of Pobin 122, because L41 has low electrical resistance. in this case, Connecting the dome-shaped diaphragm 1 2 1 and the edge-shaped diaphragm 1 2 9 by making the width t 'of the flat portion 13 2 approximately equal to the width t of the end face of the conductive one-turn ring 14 1 In addition, the mechanical strength of this part can be increased.
- the width t of the end face of the bobbin 1 2 2 is thinner than the width 1 ⁇ of the connecting flat section 1 32 as described in detail in Fig. 14 above, it is necessary to use the adhesive 13 In this case, the strength varies depending on the application condition of the adhesive 13 1.
- the width t 'of the connecting flat portion 132 is made very wide, there is a problem in design. For example, if the width t of the conductive one-turn ring 141 is to be adjusted to the width t 'of the connecting flat portion 132, it is necessary to increase the width of the magnetic air gap, that is, the width of the gap 127. This causes inconvenience of reducing sound pressure sensitivity.
- the present invention has been made to solve the above-mentioned problem, and the problem to be solved by the present invention is to join a reinforcing ring near the connecting flat portion of the acoustic diaphragm or near the connecting flat portion.
- the strength of the connection flat portion is increased, the 180 ° phase-shifted vibration between the dome-shaped diaphragm and the edge-shaped diaphragm is removed, and the driving force from a driving means such as a voice coil is removed.
- the purpose of the present invention is to provide a speaker device having good sound signal quality up to the high-frequency range by transmitting the sound to the acoustic diaphragm. Disclosure of the invention
- the speaker device of the present invention which is capable of reproducing to a high frequency range, comprises a diaphragm for use in an electrodynamic-type speaker force and an electrodynamic-type electromagnetic induction speaker.
- the reinforcing ring is fixed to the flat part that connects the two, or the flat part and its vicinity, and the end surface of the voice coil bobbin or the conductive one-turn ring is fixed to the acoustic diaphragm or the flat part of the reinforcing ring. By bonding the end faces of the ring, This is to increase the mechanical strength of the flat part.
- connection flat portion or the vicinity of the connection flat portion of the acoustic diaphragm or the reinforcing ring is reinforced by the capturing ring, so that the dome-shaped diaphragm has low mechanical strength.
- the strength of the connecting flat part that connects the dome-shaped diaphragm and the edge-shaped diaphragm increases, and the 180-degree phase-shifted vibration between the dome-shaped diaphragm and the edge-shaped diaphragm is removed, and the coil pobin removes the vibration.
- FIG. 1 is a side sectional view of a speaker device according to a first embodiment of the present invention
- FIG. 2 is a diagram for explaining the operation of FIG. 1,
- FIG. 3 is a perspective view showing a part of a speaker device according to a second embodiment of the present invention in section.
- FIG. 4 is a perspective view of a reinforcing ring showing a first embodiment used for the speaker device of the present invention
- Fig. 5 is an enlarged sectional view of part C in Fig. 3 and an enlarged side sectional view showing another mounting method.
- Fig. 6 is an enlarged view of section D in Fig. 1 and an enlarged sectional view showing other mounting methods.
- FIG. 7 is a perspective view showing a cross section of a part of a speaker device according to a third embodiment of the present invention.
- FIG. 8 is a perspective view of a correction ring showing a second embodiment used for the speaker device of the present invention.
- FIG. 9 is a side sectional view showing another configuration of the part B in FIG. 7,
- FIG. 10 is a sound pressure-frequency characteristic curve of the speaker device of the present invention
- Fig. 11 is a sound pressure-frequency characteristic curve of a conventional speaker device
- Fig. 12 is a side sectional view of the conventional speaker device.
- Fig. 13 is an enlarged sectional side view of the part A in Fig. 12,
- FIG. 14 is an enlarged sectional side view showing another structure of the portion A in FIG. 12, and FIG. 15 is an enlarged sectional side view showing still another structure of the portion A in FIG. BEST MODE FOR CARRYING OUT THE INVENTION
- FIG. 1 is a side sectional view showing the present invention applied to an electrodynamic electromagnetic induction speaker
- FIG. 2 is a diagram showing an equivalent circuit of the electrodynamic electromagnetic induction speaker shown in FIG. is there.
- the speaker device 1 is composed of a frame part, an acoustic diaphragm, and driving means.
- the frame is formed integrally with the lower surface plate 2a at the approximate center of the lower surface plate 2a made of a disc-shaped metal, and the columnar pole piece 2 having a diameter smaller than the diameter of the lower surface plate is erected. Then, a concentric magnet 6 is joined to the lower surface plate 2 a so as to surround the outer periphery of the pole piece 2.
- a disk-shaped upper plate 7 made of a metal formed concentrically on the magnet 6 is joined.
- the frame portion is formed by integrating the cylindrical frame 10 fitted on the outer periphery of the upper surface plate 7 with the upper surface plate 7.
- the acoustic diaphragm 5 is composed of a central convex dome-shaped diaphragm, and a dome-shaped diaphragm having a cross-sectional shape having a curvature R or a straight edge-shaped diaphragm from an edge of the dome-shaped diaphragm.
- the driving means of the electromagnetic induction type force is a pole piece 2 or a disc-shaped pole piece fixed on the pole piece 2 (not shown).
- Fig. 2 shows the equivalent circuit of the induction section of the electrodynamic electromagnetic induction speaker shown in Fig. 1, and the input impedance Z corresponding to the primary coil 3a for excitation shown in Fig.
- FIG. 3 is a perspective view partially showing the acoustic diaphragm 5 and a conductive one-turn ring as a driving means.
- the same driving means as shown in FIG. 15 (only a conductive one-turn ring) is used.
- the acoustic diaphragm 5 is integrally formed by pressing a metal material, for example, a sheet-like material such as aluminum or titanium, or a sheet-like material made of a polymer material. It has a substantially hemispherical dome-shaped diaphragm 11, and has a connecting flat portion 12 continuous to the outer periphery of the dome-shaped diaphragm 11, and a cross-sectional shape continuous to the outer periphery of the connecting flat portion 12.
- the connecting flat portion 12 connecting the dome-shaped diaphragm 11 and the edge-shaped diaphragm 13 of the above-described acoustic diaphragm 5 is formed from the outer periphery of the dome-shaped diaphragm 11 shown in FIGS. 5 (A) and 5 (B).
- a ring-shaped dome vibrating plate inner peripheral edge (hereinafter referred to as a “circumferential portion”) that extends so as to hang down, and a flat portion extending horizontally in the lower edge of the inner peripheral portion 12 a 1 2 b and an edge-like diaphragm 13 continuously formed at the end of the plane portion 12 b.
- connection flat portion 12 is stretched in both directions of the dome-shaped diaphragm 11 and the edge-shaped diaphragm 13 during integral molding by press working, so that it is pressed thinly.
- a secondary coil as a driving means is used as a conductive one-turn ring 3 as shown in FIGS. 3 and 5 (A) and (B) or as a secondary coil.
- a bobbin 4 with a conductive 1 turn ring 3 attached to the inner periphery Adhesive 16 For such a pobin 4 and a conductive one-turn ring 3, a very light sheet is used in order to make the vibration system light, so a sheet as thin as possible is used.
- the thickness of the end face of the bobbin 4 or the conductive one-turn ring 3 is smaller than the width of the flat part 12 b of the connecting flat part 12, and the bobbin to be joined to the flat part 12 b with the adhesive 16. No trapping effect can be expected at one end of 4 and conductive 1 turn ring 3.
- the connecting flat portion 12 is reinforced by a reinforcing ring 15 as shown in FIG. 4 to reinforce the strength of the flat portion 12b. .
- the width w of the reinforcing ring 15 made of a sheet of aluminum, titanium, polymer sheet, etc. or paper, etc. as shown in Fig. 4 is placed on the flat part 12b of the connecting flat part 12
- the connecting flat portion 12 which forms a concave groove-shaped depression corresponding to the width of the portion 12b is bonded and fixed with an adhesive 16 or the like to increase the mechanical strength of the connecting flat portion 12.
- the material of the reinforcing ring may be the same as that of the acoustic diaphragm 5, or may be different.
- the thickness is preferably equal to or greater than the thickness of the acoustic diaphragm 5.
- the thickness of the bonded portion be at least twice the thickness of the material of the acoustic diaphragm 5.
- the catching ring 15 shown in FIG. 1 Join the flat part 1 2b from the lower side (bottom side) of 1b, and attach one end of the pobin 4 to which the conductive 1 turn ring 3 or the conductive 1 turn ring 3 is attached via the adhesive 16 Join to the reinforcing ring 15.
- the reinforcing ring 15 is joined from above or below the flat portion 12 b of the connecting flat portion 12.
- a reinforcing ring 15 made of a material of a predetermined type and having a predetermined thickness may be joined from both the upper side and the lower side of the flat portion 12 b to strengthen the structure.
- an electromagnetic induction type speaker has been described as a speaker driving means, but as shown in Fig. 12, an electrodynamic type speaker in which a voice coil is wound around a normal pobbin is also used. It is clear that the present invention can be applied.
- FIG. 7 is a perspective view showing a cross section of a part of a diaphragm and a bobbin showing another configuration when the present invention is applied to an electrodynamic speaker
- FIG. FIG. 9 is a perspective view partially showing a cross section showing another configuration of the reinforcing ring used in the present invention
- FIG. 9 is a side cross sectional view showing another configuration of a portion B in FIG.
- the reinforcing ring used in this example has an inner peripheral portion 12a of a connecting flat portion 12 of the acoustic diaphragm 5, a flat portion 12b, and a flat portion 12b.
- the top edge of b has a partially curved surface along the edge-shaped diaphragm 13
- the rising edge of the inner periphery 12 a of the connection flat portion 12 has a partially curved surface along the dome-shaped diaphragm 11. Join so that they touch each other. That is, as shown in FIG. 8, the ring 15a for capturing is in contact with the partially curved surface of the edge-shaped diaphragm 13 and the partially curved surface of the dome-shaped diaphragm 11 from above or below.
- the joint ring 17 and the outer joint ring 18 have a joint 23 with a concave cross section that is provided so as to be connected to the reinforcing ring rising part 21 and the reinforcing ring flat part 20. Formed integrally with a press or the like.
- the reinforcing ring 15 a is joined to the reinforcing ring flat surface 20 from above the connecting flat portion 12 via the adhesive 16.
- An adhesive may be uniformly applied to the joints 23 to join them.
- the capturing ring 15a having a width equal to the width of the connecting flat portion 12 is bonded and fixed to the vicinity of the connecting flat portion 12 as well.
- the material of 15 a may be the same as or different from that of the acoustic diaphragm 5.
- the thickness is preferably equal to or greater than the thickness of the acoustic diaphragm 5.
- the thickness is preferably such that the strength of the bonded portion is at least twice the thickness of the material of the acoustic diaphragm 5.
- the laminate press may be performed simultaneously with the formation of the acoustic diaphragm.
- the reinforcing ring can be joined from both above and below the connecting flat portion 12 of the acoustic diaphragm 5.
- Figure 10 shows the results of calculating the sound pressure-frequency characteristics of the electrodynamic induction speaker described in Fig. 6 (A) using the finite element method.
- the width w of the connecting flat part of the acoustic diaphragm 5 is approximately 0.25 mm, while the thickness w 'of the bobbin 4 for the conductive one-turn coil is 0.05 mm, and the reinforcing ring 15 is acoustic.
- the calculation is performed using the same material and the same thickness as diaphragm 5.
- the vertical axis indicates sound pressure level (dB), and the horizontal axis indicates frequencies from 10 kHz to 100 kHz.
- a substantially flat level frequency characteristic is obtained from 10 kHz to 10 kHz, and the sound pressure below 40 kHz is also described later. There is no significant level decrease compared to the conventional configuration, and the driving force from the pobin 4 is efficiently transmitted to the edge-shaped diaphragm 13 without causing phase inversion or the like.
- the connecting flat portion 12 of the acoustic diaphragm 5 and its vicinity are reinforced.
- the calculation for the reinforcing ring 15a is made using the same material and thickness as the diaphragm.
- the width of the inner joint ring 17 and the outer joint ring 18 as reinforcements near the connection flat part was lmm.
- the width of the connection flat portion 12 and the thickness of the voice bobbin are the same as those calculated in FIG. In this case as well, no large drop in sound pressure was observed around 40 kHz, and as in the case of Fig. 10, the driving force from the voice pobin was transmitted to the edge-shaped diaphragm and the sound output was efficiently performed To the sound pressure level at 40 kHz to 100 kHz compared to the reinforcing ring 15 shown in Fig. 4. did.
- FIG. 11 shows the results of the sound pressure-frequency characteristics of the speaker described in FIG. 14 calculated by the finite element method.
- the width of the connecting flat portion 132 is 0.25 mm, whereas the thickness of the pobin 122 is very small, 0.05 mm. Above about 40 kHz, there is a sharp drop in sound pressure. In this case, the strength of the connecting flat portion 132 is insufficient, and the driving force of the pobin 122 cannot be sufficiently transmitted to the edge-like diaphragm 129 at a high frequency of 40 kHz or higher. The conversion from the acoustic diaphragm 120 to the acoustic output has not been performed efficiently.
- connection flat part of the diaphragm which has the connection flat part which connects a dome-shaped diaphragm and an edge-shaped diaphragm, or the upper side or the lower part near a connection flat part. Attach the ring and connect the flat joint or the flat joint and its vicinity.
- the driving means such as a voice coil is joined to the squeezing ring, the mechanical strength of the connecting flat part is increased, unnecessary vibration is eliminated, and it is made in comparison with the case where the adhesive is applied.
- This is advantageous in that an electrodynamic speaker device that can easily and efficiently perform sound output conversion and reproduce almost flat up to 100 kHz in a high frequency range can be obtained.
- the speaker device of the present invention can provide a speaker suitable for a tweeter or the like having a good acoustic signal quality up to a high frequency range in the speaker system.
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- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Acoustics & Sound (AREA)
- Signal Processing (AREA)
- Multimedia (AREA)
- Audible-Bandwidth Dynamoelectric Transducers Other Than Pickups (AREA)
- Diaphragms For Electromechanical Transducers (AREA)
Description
Claims
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US10/515,853 US7274798B2 (en) | 2002-05-28 | 2003-05-28 | Speaker device |
KR1020047019127A KR101028309B1 (ko) | 2002-05-28 | 2003-05-28 | 스피커 장치 |
US11/882,925 US7813522B2 (en) | 2002-05-28 | 2007-08-07 | Loudspeaker device |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2002-154499 | 2002-05-28 | ||
JP2002154499A JP3896900B2 (ja) | 2002-05-28 | 2002-05-28 | スピーカ装置 |
Related Child Applications (2)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US10515853 A-371-Of-International | 2003-05-28 | ||
US11/882,925 Continuation US7813522B2 (en) | 2002-05-28 | 2007-08-07 | Loudspeaker device |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2003101148A1 true WO2003101148A1 (fr) | 2003-12-04 |
Family
ID=29561364
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/JP2003/006700 WO2003101148A1 (fr) | 2002-05-28 | 2003-05-28 | Haut-parleur a bague de renforcement du diaphragme |
Country Status (5)
Country | Link |
---|---|
US (2) | US7274798B2 (ja) |
JP (1) | JP3896900B2 (ja) |
KR (1) | KR101028309B1 (ja) |
TW (1) | TWI221393B (ja) |
WO (1) | WO2003101148A1 (ja) |
Cited By (2)
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US7529380B2 (en) | 2004-03-22 | 2009-05-05 | Namiki Seimitsu Houseki | Multifunction-type vibration actuator and mobile terminal device |
EP1601227B1 (en) * | 2004-05-24 | 2016-03-09 | Blast Loudspeakers Ltd | Loudspeaker |
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JP3896900B2 (ja) * | 2002-05-28 | 2007-03-22 | ソニー株式会社 | スピーカ装置 |
ATE394894T1 (de) * | 2003-08-19 | 2008-05-15 | Matsushita Electric Ind Co Ltd | Lautsprecher |
JP4570030B2 (ja) * | 2004-06-30 | 2010-10-27 | 株式会社オーディオテクニカ | ダイナミックマイクロホン |
JP3846497B2 (ja) * | 2004-09-21 | 2006-11-15 | オンキヨー株式会社 | スピーカー振動板およびそれを備えたスピーカー |
JP4148211B2 (ja) * | 2004-10-05 | 2008-09-10 | ソニー株式会社 | スピーカ装置 |
JP4567484B2 (ja) * | 2005-02-18 | 2010-10-20 | スター精密株式会社 | 電気音響変換器 |
GB2427522B (en) * | 2005-06-22 | 2008-07-16 | Gp Acoustics | Compound Loudspeaker |
JP4683555B2 (ja) * | 2006-03-01 | 2011-05-18 | パイオニア株式会社 | ドーム型振動板、およびスピーカ装置 |
JP2007336322A (ja) * | 2006-06-16 | 2007-12-27 | Pioneer Electronic Corp | スピーカ及びその製造方法 |
WO2008112176A2 (en) * | 2007-03-09 | 2008-09-18 | One Systems Group Co., Ltd | Transducer motor structure and inside-only voice coil for use in loudspeakers |
US20080240473A1 (en) * | 2007-03-30 | 2008-10-02 | Motorola, Inc. | Speaker cone assembly for preventing the intrusion of moisture and method of forming same |
GB2449842B (en) * | 2007-05-03 | 2012-02-01 | Pss Belgium Nv | Loudspeaker with a stiffening element |
CN102057690A (zh) * | 2008-07-10 | 2011-05-11 | 日本先锋公司 | 扬声器装置 |
US20110228949A1 (en) * | 2008-10-31 | 2011-09-22 | Pioneer Corporation | Speaker device, and automobile |
TWI401976B (zh) * | 2008-12-31 | 2013-07-11 | Beijing Funate Innovation Tech | 揚聲器 |
JP4754012B2 (ja) * | 2009-08-05 | 2011-08-24 | フォスター電機株式会社 | スピーカー装置 |
GB2479941A (en) * | 2010-04-30 | 2011-11-02 | Gp Acoustics | Stiffened loudspeaker diaphragm |
US8442259B2 (en) * | 2010-06-04 | 2013-05-14 | Beats Electronics, Llc | System for vibration confinement |
CN202269005U (zh) * | 2011-11-03 | 2012-06-06 | 易力声科技(深圳)有限公司 | 一种扬声器振膜及使用该扬声器振膜的扬声器 |
KR101407490B1 (ko) * | 2012-08-30 | 2014-06-16 | 주식회사 이엠텍 | 음향변환장치의 진동판 모듈 |
GB2505953B (en) | 2012-09-18 | 2019-05-08 | B & W Group Ltd | Stepped thickness change in dome-shaped diaphragms for loudspeaker drive units or microphones |
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WO2016158285A1 (ja) * | 2015-03-31 | 2016-10-06 | パイオニア株式会社 | 音発生装置 |
US9693146B2 (en) * | 2015-09-11 | 2017-06-27 | Sonos, Inc. | Transducer diaphragm |
US9980050B2 (en) * | 2015-09-29 | 2018-05-22 | Coleridge Design Associates Llc | System and method for a loudspeaker with a diaphragm |
US9743189B2 (en) * | 2016-01-05 | 2017-08-22 | Apple Inc. | Microspeaker with improved high frequency extension |
CN205847561U (zh) * | 2016-06-07 | 2016-12-28 | 瑞声科技(新加坡)有限公司 | 振动系统和应用该振动系统的扬声器 |
US20180317013A1 (en) * | 2017-04-26 | 2018-11-01 | Kimon Bellas | Inverted dome for speaker drivers |
US11051111B2 (en) * | 2017-08-11 | 2021-06-29 | Sound Solutions International Co., Ltd. | Coil extension element |
JP6995435B2 (ja) * | 2017-09-15 | 2022-01-14 | アルパイン株式会社 | スピーカ |
USD881846S1 (en) * | 2017-12-06 | 2020-04-21 | Tymphany Acoustic Technology (Huizhou) Co., Ltd. | Vibration diaphragm for loudspeaker |
US20190191251A1 (en) * | 2017-12-18 | 2019-06-20 | Audio-Technica Corporation | Diaphragm and electroacoustic transducer |
CN109104666B (zh) * | 2018-08-01 | 2020-10-09 | 美特科技(苏州)有限公司 | 扬声器及其音频设备、频响调节方法 |
JP7255047B2 (ja) * | 2018-09-18 | 2023-04-11 | フォスター電機株式会社 | スピーカ用振動板 |
WO2020255607A1 (ja) * | 2019-06-19 | 2020-12-24 | ソニー株式会社 | イヤホン |
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2003
- 2003-05-26 TW TW092114166A patent/TWI221393B/zh not_active IP Right Cessation
- 2003-05-28 KR KR1020047019127A patent/KR101028309B1/ko not_active IP Right Cessation
- 2003-05-28 US US10/515,853 patent/US7274798B2/en not_active Expired - Lifetime
- 2003-05-28 WO PCT/JP2003/006700 patent/WO2003101148A1/ja active Application Filing
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2007
- 2007-08-07 US US11/882,925 patent/US7813522B2/en not_active Expired - Fee Related
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Cited By (2)
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US7529380B2 (en) | 2004-03-22 | 2009-05-05 | Namiki Seimitsu Houseki | Multifunction-type vibration actuator and mobile terminal device |
EP1601227B1 (en) * | 2004-05-24 | 2016-03-09 | Blast Loudspeakers Ltd | Loudspeaker |
Also Published As
Publication number | Publication date |
---|---|
TW200307479A (en) | 2003-12-01 |
JP3896900B2 (ja) | 2007-03-22 |
TWI221393B (en) | 2004-09-21 |
US20070297640A1 (en) | 2007-12-27 |
US7274798B2 (en) | 2007-09-25 |
US20060088184A1 (en) | 2006-04-27 |
US7813522B2 (en) | 2010-10-12 |
KR101028309B1 (ko) | 2011-04-11 |
JP2003348691A (ja) | 2003-12-05 |
KR20050010837A (ko) | 2005-01-28 |
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