WO2010023759A1 - Dispositif de haut-parleur - Google Patents

Dispositif de haut-parleur Download PDF

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Publication number
WO2010023759A1
WO2010023759A1 PCT/JP2008/065593 JP2008065593W WO2010023759A1 WO 2010023759 A1 WO2010023759 A1 WO 2010023759A1 JP 2008065593 W JP2008065593 W JP 2008065593W WO 2010023759 A1 WO2010023759 A1 WO 2010023759A1
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WO
WIPO (PCT)
Prior art keywords
diaphragm
inner peripheral
speaker device
support
column
Prior art date
Application number
PCT/JP2008/065593
Other languages
English (en)
Japanese (ja)
Inventor
雄一 笠原
Original Assignee
パイオニア株式会社
東北パイオニア株式会社
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by パイオニア株式会社, 東北パイオニア株式会社 filed Critical パイオニア株式会社
Priority to JP2010510577A priority Critical patent/JP4898957B2/ja
Priority to PCT/JP2008/065593 priority patent/WO2010023759A1/fr
Publication of WO2010023759A1 publication Critical patent/WO2010023759A1/fr

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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
    • 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
    • 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

Definitions

  • the present invention relates to a speaker device.
  • a speaker device having a dome-shaped diaphragm is known.
  • a typical dome-type speaker device only the outer periphery of the diaphragm is supported by the frame so that it can vibrate freely through the edges.
  • vibration propagated from the voice coil overlaps near the center of the diaphragm and resonates.
  • Unnecessary vibrations such as reverse resonance (divided vibrations) may occur and the acoustic characteristics may deteriorate.
  • a speaker device that has a structure in which an inner peripheral portion of a dome-shaped diaphragm is supported by a support portion and reduces the unnecessary vibration is known (for example, see Patent Document 1).
  • a plurality of window holes are formed on the side surface of the conical copper plate, and the air on the back side of the diaphragm passes through the window hole on the copper plate to the back side of the diaphragm. It is possible to flow towards.
  • the outer peripheral part of the copper plate is attached to the upper end of the center pole part, and the air moves through the window hole of the copper plate, for example, the copper plate vibrates and emits unnecessary sound waves, and is emitted from the back side of the diaphragm.
  • the acoustic characteristics are deteriorated due to interference between a reflected wave generated when the sound wave is reflected by the copper plate and a sound wave emitted from the front side of the diaphragm.
  • the present invention is an example of a problem to deal with such a problem. That is, in a speaker device having a dome-shaped diaphragm, it prevents the deterioration of acoustic characteristics, prevents the generation of unnecessary sound waves caused by vibration of the diaphragm, and the reflected wave generated by reflection of sound waves generated on the back side of the diaphragm It is an object of the present invention to prevent deterioration in acoustic characteristics due to interference between sound waves emitted from the front side of the diaphragm and the like.
  • the speaker device of the present invention includes at least the configurations according to the following independent claims.
  • [Claim 1] It has a frame, a vibrating body supported by the frame, a magnetic circuit, and a support pillar disposed on the magnetic circuit and extending in a sound radiation direction, A diaphragm, and a voice coil fixed to the diaphragm and loosely fitted in a magnetic gap of the magnetic circuit, the diaphragm having an outer peripheral portion of the diaphragm coupled to the frame so as to freely vibrate
  • the inner peripheral portion of the diaphragm is supported by the support column so as to freely vibrate, and the support column extends along a direction perpendicular to the first hole portion formed along the axial direction and the axial direction. And a second hole portion that communicates with the first hole portion.
  • FIG. 2 is an exploded cross-sectional view of the speaker device shown in FIG. 1.
  • FIG. (A) It is a figure for demonstrating the diaphragm and inner peripheral support part of the speaker apparatus shown in FIG. (A) is a diaphragm and a plan view viewed from the acoustic radiation direction side, and (B) is a cross-sectional view of the diaphragm and the inner periphery support portion shown in (A). It is a figure for demonstrating the principal part of the speaker apparatus shown in FIG. (A) is the cross-sectional perspective view which expanded the principal part vicinity, such as a diaphragm of the speaker apparatus shown in FIG. 1, a support
  • the support column 4 is formed with a first hole (vertical) formed along the axial direction. Hole) 401, and a second hole portion 402 formed in a direction orthogonal to the axial direction and communicating with the first hole portion 401 is formed in a part of the support column 4 or the magnetic circuit 2. It is characterized by being.
  • pillar 4 is provided with the projection part 47 which protrudes in an acoustic radiation direction from the diaphragm 31, and the 1st hole 401 is extended so that it may protrude in an acoustic direction from the diaphragm 31 (refer 401A),
  • the lid 5 includes a fitting portion that fits into the protrusion 47 of the support column 4, and the first hole 401 communicates between the protrusion 47 of the support column 4 and the fitting portion of the cover 5.
  • a space 411 is formed. According to this, the space which absorbs the back pressure fluctuation of the diaphragm 31 can be enlarged by the space formed in the space 411 or the lid portion 5.
  • the concave and convex surface 64a is formed on the outer surface of the support portion 64 that hits the inner wall surface of the first space 92, the inner surface of the first frame 61, or the outer surface of the yoke of the magnetic circuit 2, and thus the first space. Sound that reaches 92 can be diffused. As a result, it is possible to suppress a phenomenon in which a sound generated from the back side of the diaphragm 31 interferes with a sound reflected by the inner wall surface of the first space 92 and a standing wave is generated.
  • speaker device 1 has an equalizer 5 having a fitting portion that fits into the protruding portion 47 of the support column 4, and the inner peripheral support portion 35 has an inner peripheral portion 356 at the protruding portion 47 of the support column 4. It is fitted and connected to the flat step portion 42, and is sandwiched between the flat step portion 42 and the equalizer 5 (see FIG. 4).
  • the equalizer 5 is provided in this way, even if the inner peripheral support portion 35 is reversely resonated at a specific frequency due to the gap of the specified interval 501 between the bottom portion of the equalizer 5 and the inner peripheral support portion 35, the inner peripheral side The sound wave emitted from the support part 35 is phase-inverted and superposed on the sound wave of the diaphragm 31, so that flat acoustic characteristics can be obtained.
  • the equalizer 5 since the equalizer 5 is provided, it is possible to prevent unnecessary sound waves emitted from the inner periphery side support portion 35 from being emitted toward the user.
  • the speaker device 1 described here can be employed in a speaker device such as a high-pitched speaker device (so-called tweeter), a small speaker device, a vehicle-mounted speaker device, or the like. And the speaker apparatus 1 which concerns on embodiment of this invention is especially suitable for vehicle-mounted use.
  • the automobile 1X (see FIG. 17) equipped with the speaker device 1 according to the embodiment of the present invention can realize a comfortable driving environment by taking advantage of the good acoustic characteristics of the speaker device 1.
  • the short ring 25 is provided so as to suppress the occurrence of current distortion in the voice coil 32 in the magnetic gap 2G of the magnetic circuit 2.
  • the short ring 25 is made of, for example, a metal material such as aluminum or copper, a low saturation magnetic flux density material, or a nonmagnetic material. As illustrated, the short ring 25 is formed in an annular shape from copper and is provided in the vicinity of the magnetic gap 2 ⁇ / b> G of the yoke 21. Further, the short ring 25 can reduce harmonic distortion included in the reproduced sound of the speaker.
  • the vibrating body 3 is supported by a frame 6 so as to freely vibrate.
  • the vibrating body 3 includes a diaphragm 31 (dome-shaped diaphragm), a voice coil 32, a voice coil bobbin 33, an outer peripheral side edge (outer peripheral support part) 34, and an inner peripheral side edge (inner peripheral support part) 35.
  • a diaphragm 31 dome-shaped diaphragm
  • voice coil 32 a voice coil bobbin 33
  • an outer peripheral side edge (outer peripheral support part) 34 an inner peripheral side edge (inner peripheral support part) 35.
  • the diaphragm 31 is formed in a prescribed shape such as a dome shape, a flat plate shape, or a cone shape, for example.
  • the diaphragm 31 according to the present embodiment is formed in a dome shape as shown in the figure, and more specifically, is formed in a shape in which the inner peripheral portion 31A is located closer to the sound radiation direction (SD) side than the outer peripheral portion 31B.
  • the surface between the inner peripheral portion 31A and the outer peripheral portion 31B is formed in a curved surface shape (the radial cross-sectional shape is convex).
  • a metal material is preferably used as a hard dome material.
  • a known diaphragm material such as titanium, magnesium, or aluminum can be employed.
  • the material for forming the diaphragm 31 is not limited to the above form, and for example, a ceramic material, a soft dome material, paper, resin, cloth, or the like may be employed.
  • the diaphragm 31 has an outer peripheral portion 31B coupled to the frame 6 so as to freely vibrate, and an inner peripheral portion 31A is disposed between the support column 4 and the inner peripheral portion 31A, and is also in the radial direction. It is supported on the support column 4 through a ring-shaped inner peripheral edge 35 having a flat cross-sectional shape.
  • the diaphragm 31 is provided with a cylindrical voice coil support portion (voice coil bobbin) 33 for supporting the voice coil 32 in the vicinity of the outer peripheral portion.
  • the voice coil 32 is supported by the voice coil bobbin 33.
  • the voice coil 32 is provided on the diaphragm 31 via the voice coil bobbin 33.
  • the present invention is not limited to this configuration, and the voice coil 32 may be directly fixed to the diaphragm 31.
  • the voice coil 32 is loosely fitted in the magnetic gap 2G of the magnetic circuit 2.
  • the outer peripheral side edge (outer peripheral support part) 34 is provided between the outer peripheral part 31B of the diaphragm 31 and the frame 6 as shown in the figure. Further, the outer peripheral edge 34 is formed in, for example, a ring shape, and the radial cross-sectional shape is formed in a prescribed shape such as a convex shape, a U shape, or a wave shape.
  • the outer peripheral edge 34 may be made by applying a fine coating on cloth, rubber, urethane foam, leather, or the like. Moreover, as the outer peripheral side edge 34, you may use what applied the damping agent to these materials.
  • the diaphragm 31 according to the present embodiment is supported by the frame 6 through the outer peripheral edge 34 so as to freely vibrate. Further, an annular intermediate member (packing) 36 may be provided between the outer peripheral edge 34 and the frame 6.
  • the inner peripheral edge 35 is formed to be deformable with respect to the vibration of the diaphragm.
  • the inner peripheral edge 35 is preferably formed of a material having a larger internal loss than that of the diaphragm 31.
  • the inner edge 35 is formed by applying a crushing coating on cloth, rubber, urethane foam, leather, or a diaphragm. A member having rigidity (Young's modulus) smaller than the member to be used can be employed.
  • the inner peripheral edge 35 according to this embodiment employs a fiber material coated with rubber.
  • the outer peripheral side edge 34 you may use what applied the damping agent to these materials.
  • the inner peripheral edge 35 may be formed of the same material as the outer peripheral edge 34. In this case, the inner peripheral edge 35 can be manufactured at a relatively low manufacturing cost. Thus, by providing the inner peripheral edge 35 formed of a material having a relatively large internal loss, unnecessary vibrations such as resonance and reverse resonance can be reduced.
  • the inner peripheral edge 35 includes an outer peripheral portion 351, a connecting portion 352, a bent portion 353, a radial cross-section flat plate-shaped portion 354, a joint portion 355, and an inner peripheral portion 356.
  • the outer peripheral portion 351 has an outer diameter larger than the inner diameter of the center hole portion 311 of the diaphragm 31.
  • the connecting portion 352 is formed in a cross-sectional shape corresponding to the radial cross-sectional shape of the vibration plate 31 from the bent portion 353 to the outer peripheral portion 351, and is connected to the inner peripheral portion 31 ⁇ / b> A of the central hole portion of the vibration plate 31.
  • the bent portion 353 is formed at the edge of the radial cross-section flat plate-shaped portion 354.
  • the bent portion 353 according to the present embodiment is formed so as to be positioned on the inner diameter of the center hole portion 311 of the diaphragm 31. Since the inner peripheral edge 35 is joined to the diaphragm 31 by the bent portion 353, the inner peripheral edge 35 can be extended in a direction substantially perpendicular to the vibration direction of the diaphragm 31.
  • the radial cross-section flat plate-shaped portion 354 is formed between the joint portion 355 and the bent portion 353 and extends along a direction orthogonal to the vibration direction of the voice coil 32 (the same direction as the acoustic radiation direction SD).
  • the radial cross-sectional shape is formed into a flat plate shape.
  • the leg portion 43 is formed on the magnetic circuit side of the column portion 41, and a vertical hole 401 and a horizontal hole 402 are formed. More specifically, the leg portion 43 has a plurality of leg portions, specifically, four leg portions 43A, 43B, 43C, and 43D. These leg portions 43A, 43B, 43C, and 43D are joined to the column portion 41 at the top.
  • the flange 45 is formed to have an outer diameter larger than the outer diameter of the column portion 41 and the leg portion 42, and the lower fitting portion 48 of the support column 4 is fitted to the central hole portion 230 of the plate 23, and is attached to the plate 23. It is fixed with an adhesive or the like.
  • the protruding portion (upper fitting portion) 47 is formed at the tip end portion (acoustic radiation side end portion) of the column portion 4 and is formed to have an outer diameter smaller than or substantially the same as the inner diameter of the inner peripheral edge 35. It is formed in a shape protruding in the acoustic radiation direction from the peripheral part.
  • the protrusion 5 is provided with the equalizer 5.
  • the column 4 is composed of a column part 41, a flat step part 42, a leg part 43, a flange 45, a projection part (upper fitting part) 47, a lower fitting part 48, and the like, in particular, the inner peripheral edge 35. Can be attenuated in the support column 4. Further, the inner peripheral edge 35 and the support column 4 are connected via an elastic material such as a thermosetting resin such as an epoxy resin, an acrylic resin or a polyurethane resin, a moisture curable resin, a two-component reactive resin, or other adhesive.
  • a thermosetting resin such as an epoxy resin, an acrylic resin or a polyurethane resin, a moisture curable resin, a two-component reactive resin, or other adhesive.
  • the lower fitting portion 48 is a joint portion to the magnetic circuit 2 and is fitted into the central hole portion 230 of the plate 23 of the magnetic circuit 2 in this embodiment.
  • the column 4 has a vertical hole (first hole) 401 formed along the axial direction of the column 4. Further, the support column 4 is formed along a direction orthogonal to the axial direction of the support column 4, and has a horizontal hole (second hole portion) 402 communicating with the vertical hole (first hole portion) 401. For example, as shown in FIG. 14, a plurality of lateral holes (second hole portions) 402 according to the present embodiment are formed in the leg portion 43. Further, the vertical hole 401 includes a vertical hole 401A formed in the pillar portion 41 and a vertical hole 401B formed in the leg portion 43 and having a diameter larger than that of the vertical hole 401A.
  • the column 4 Since the column 4 has a columnar shape so as to extend from the magnetic circuit 2 in the acoustic radiation direction, it is possible to suppress the column 4 from vibrating, and unnecessary sound waves can be generated by the column vibrating. Can be prevented from being emitted toward the acoustic radiation direction.
  • the vertical hole 401 and the horizontal hole 402 of the support column 4 reduce the change in internal pressure (back pressure of the diaphragm 31) in the space (second space) 91 surrounded by the diaphragm 31 and the magnetic circuit 2, and dissipate heat. , Provided for the air passage 900 to the first space 92 (back chamber) and the like.
  • the equalizer 5 is provided at the acoustic radiation side end of the support column 4 and reduces the disturbance of the sound pressure frequency characteristic of the sound wave radiated from the diaphragm 31 according to its shape. Further, the equalizer 5 can obtain a desired directivity characteristic of the sound wave emitted from the diaphragm according to the shape thereof.
  • the equalizer 5 is disposed on the acoustic radiation side (SD) of the diaphragm 31 and covers at least the radial cross-section flat plate-shaped portion 354 of the inner peripheral edge 35 with a gap between the inner peripheral edge 35 and the specified interval 501. Is formed. Specifically, the equalizer 5 is formed in a substantially conical shape, and the outer peripheral portion of the equalizer 5 is formed to have a larger diameter than the radial cross-section flat plate-shaped portion 354 of the inner peripheral edge 35. Desired acoustic characteristics can be obtained by appropriately setting the diameter, size, gap size, and the like of the equalizer 5.
  • the equalizer 5 when the speaker is driven, unnecessary vibration such as resonance and reverse resonance is reduced by the inner peripheral edge 35. Further, since the equalizer 5 is provided, even if the inner peripheral edge 35 is reversely resonated at a specific frequency due to the gap of the specified interval 501 between the bottom of the equalizer 5 and the inner peripheral edge 35, the inner peripheral side The sound wave emitted from the edge 35 is phase-inverted and overlapped with the sound wave of the diaphragm 31 to obtain flat acoustic characteristics. In addition, since the equalizer 5 is provided, it is possible to prevent unnecessary sound waves emitted from the inner peripheral edge 35 from being emitted toward the user.
  • the equalizer 5 is formed with a fitting portion 52 that is fitted to the protruding portion 47 of the support column 4 on the side opposite to the acoustic radiation side.
  • the inner peripheral edge 35 is connected to the flat stepped portion 42 by fitting the inner peripheral portion to the protruding portion 47 of the column 4, and the fitting portion 52 of the equalizer 5 and the protruding portion 47 of the column 4 are connected to each other. In the fitted state, it is held between the flat step portion 42 of the support column 4 and the joint portion 53 of the equalizer 5. For this reason, the support
  • the equalizer 5 by providing the equalizer 5 with the fitting portion 52, the vertical hole 401 of the support column 4 can be further increased, the first space 92 can be substantially enlarged, and the acoustic characteristics in the low frequency range are good. It becomes. Further, if necessary, a space (gap) 411 can be formed between the fitting portion 52 of the equalizer 5 and the projection portion 47 of the support column 4 so that the first space 92 can be substantially enlarged, and can be changed as appropriate. be able to. Further, the equalizer 5 may be used as a lid portion that closes the end portion (acoustic radiation side) of the first hole 401.
  • the inner peripheral portion of the inner peripheral edge 35 is fitted to the projection 47 of the support column 4 and connected to the flat step portion 42, and then the fitting portion 52 of the equalizer 5 and the projection 47 of the support column 4. And the speaker device according to the present invention can be easily manufactured.
  • the frame 6 is made of a known material such as metal or resin and supports the magnetic circuit 2 and the vibrating body 3.
  • the frame 6 includes a first frame (innermost frame) 61, a second frame (intermediate member) 62, and a third frame (outermost frame) 63. Moreover, it has the support part 64 for supporting the magnetic circuit 2 as needed.
  • the first frame (innermost frame) 61 is formed in a U-shaped cross section in the illustrated example, and includes the magnetic circuit 2 inside. Further, the upper end of the first frame 61 and the upper end of the yoke 21 of the magnetic circuit 2 are formed so that a space (first space) 92 is formed between the first frame 61 and the yoke 21 of the magnetic circuit 2. Between the two, an annular second frame (intermediate member) 62 is provided. Further, the first frame 61 may be provided with holes 611 and 612 as necessary. For example, the vent holes 611 and 612 function as vent holes for communicating the frame and the outside.
  • the support portion 64 is provided on the frame 6, as shown in FIGS. 8 and 9, the support portion 64 is provided inside the first frame 61 via a space (first space) 92. That is, a space 92 is formed between the outer surface of the support portion 64 and the inner surface of the first frame 61.
  • a space (second space) 91 surrounded by the diaphragm 31 and the magnetic circuit 2 and a space (first space) 92 surrounded by the yoke 21 and the frame 61 are the vertical holes 401 of the support column 4.
  • the horizontal hole 402 and the air passage 900 communicating with each other through the air hole 201 formed in the magnetic circuit 2 are formed. Since the speaker device 1 according to the present embodiment includes the air passage 900, the space (first space) 92 can be used as a back chamber, and the acoustic characteristics in the low sound range are good.
  • the ring-shaped second frame (intermediate member) 62 is provided between the first frame 61 and the magnetic circuit 2, and the outer peripheral edge 34 and the intermediate member (packing) 36 are provided at the upper end portion.
  • the outer peripheral part of the diaphragm 31 is connected so that vibration is possible.
  • the third frame (outermost frame) 63 is formed in a substantially cylindrical shape, and is provided on the outer peripheral side in the radial direction from the first frame 61 and the second frame 62.
  • a protection member 7 is provided on the third frame 63.
  • the support part 64 is supported integrally with the second frame 62 or connected to the upper part of the second frame 62.
  • An opening corresponding to the vent hole 201 is also formed in the support portion 64.
  • the protection member 7 is provided on the acoustic radiation side of the diaphragm 31 and protects the diaphragm 31, the equalizer 5, and the like.
  • the protection member 7 includes a porous metal member 71 and a decoration portion 72.
  • the porous metal member 71 is formed of, for example, a porous metal plate, and the outer peripheral end is fixed to the third frame 63 of the frame 6. It is provided on the third frame 63 of the frame 6 on the outer side in the radial direction from the decorative portion 72 and the porous metal member 71.
  • Sound absorbing member 8 can be disposed in the vent 201 of the magnetic circuit 2 (sound absorbing member 80).
  • the sound absorbing member 8 can be disposed in the space 92 (sound absorbing member 81).
  • the sound absorbing members 80 and 81 may be the integrated sound absorbing member 8 or may be provided separately. Further, the sound absorbing members 8, 80, 81 are arranged so as to cover one end of the vent hole 201 of the magnetic circuit 2.
  • the sound absorbing member 8 reduce unnecessary sounds that are reflected and interfered with the air vent 201 and the space 92.
  • the sound absorbing member 8 is made of a known material such as a resin member such as low-foam urethane, artificial leather, cloth, or non-woven fabric.
  • a speaker device 1 for example, when an audio signal is input to the voice coil 32 via a terminal portion (not shown) provided in the frame 6, Lorentz force acts on the voice coil 32 according to the audio signal. Then, the voice coil 32 vibrates by the force. The vibration of the voice coil 32 is transmitted from the outer peripheral portion of the diaphragm 31 to the central portion.
  • a hole is formed in the central portion of the diaphragm 31, and the inner portion is formed in the hole. Since the diaphragm 31 is supported by the support column 4 via the peripheral edge 35, unnecessary vibrations such as resonance and reverse resonance of the diaphragm can be reduced. Further, by providing the inner peripheral edge 35 formed of a material having a relatively large internal loss, unnecessary vibration can be reduced.
  • the radial cross-sectional shape of the inner peripheral edge 35 is formed in a flat plate shape.
  • the extra length is longer than the inner peripheral edge having a roll-shaped cross-sectional shape.
  • unnecessary peak dip in the acoustic characteristics is reduced, and flat acoustic characteristics are obtained from the low range to the high range. Obtainable. That is, it is possible to provide a speaker device with high-quality reproduced sound.
  • the frequency peak of reverse resonance can be set to a higher frequency side, and the acoustic characteristics can be made flat.
  • FIG. 15 is a diagram for explaining the sound pressure frequency characteristics of the speaker device.
  • the vertical axis represents SPL (Sound Pressure Level: unit dB (decibel)), and the horizontal axis represents frequency (unit Hz).
  • a solid line (EQ) indicates a sound pressure frequency characteristic of the speaker device 1 provided with the equalizer 5
  • a dotted line (NOEQ) indicates a sound pressure frequency characteristic of the speaker device 1 when the equalizer 5 is not provided.
  • a peak is generated in the vicinity of about 15 kHz.
  • the peak is reduced to have flat acoustic characteristics, and a relatively high-quality reproduced sound is obtained. Can be obtained.
  • the inner peripheral edge 35 reversely resonates at a specific frequency due to the gap of the specified interval 501 between the bottom of the equalizer 5 and the inner peripheral edge 35.
  • the sound wave emitted from the inner peripheral edge 35 is phase-inverted, and the sound quality is improved due to the superposition with the sound wave of the diaphragm 31.
  • the speaker device 1 includes a frame 6, a vibrating body 3 supported by the frame 6, a magnetic circuit 2, and a support column 4 that is disposed on the magnetic circuit 2 and extends in the acoustic radiation direction,
  • the vibrating body 3 includes a diaphragm 31, a voice coil 32 that is fixedly attached to the diaphragm 31 and loosely fitted in the magnetic gap 2 ⁇ / b> G of the magnetic circuit 2, and an inner peripheral support portion that supports the inner peripheral portion of the diaphragm 31 (
  • the diaphragm 31 is connected to the frame 6 so that the outer periphery of the diaphragm 31 can vibrate freely.
  • the inner periphery of the diaphragm is located between the support column 4 and the inner periphery.
  • FIG. 16 is an explanatory view showing another embodiment of the present invention (FIG. 16 (a) is a front view, and FIG. 16 (b) is an AA cross-sectional view).
  • the basic structure is the same as that described above, and the same portions are denoted by the same reference numerals and redundant description is omitted.
  • the frame 6A that supports the magnetic circuit 2 is screwed to the rear frame 6B, and a first space 92 is formed between the frame 6A and the rear frame 6B.
  • the equalizer 5 is attached to the column 4, a first hole 401 is formed at the center of the equalizer 5, and the first space 92 passes through the vent hole 201 penetrating the magnetic circuit 2 from the first hole 401.
  • a second hole 402 is formed so as to communicate with the first hole 401, and the first space 92 passes through the second hole 402 to the first hole 401 to the vent hole 201. It communicates with the first space 92.
  • the rear frame 6B is supported by a support base 65.
  • the equalizer 5 protrudes from the protective member 700 in the acoustic radiation direction.
  • the diaphragm 31 is a ring-shaped diaphragm including an inner peripheral diaphragm 301 and an outer peripheral diaphragm 302.
  • the inner peripheral diaphragm 301 and the outer peripheral diaphragm 302 have different radii of curvature to change their resonance frequencies, and the inner peripheral diaphragm 301 and the outer peripheral diaphragm 302 have the same area, so that the sound pressure levels of both diaphragms are equal. I have to. As a result, the wide range reproduction of the speaker device is enabled.

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  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Physics & Mathematics (AREA)
  • Acoustics & Sound (AREA)
  • Signal Processing (AREA)
  • Audible-Bandwidth Dynamoelectric Transducers Other Than Pickups (AREA)
  • Fittings On The Vehicle Exterior For Carrying Loads, And Devices For Holding Or Mounting Articles (AREA)
  • Diaphragms For Electromechanical Transducers (AREA)
  • Obtaining Desirable Characteristics In Audible-Bandwidth Transducers (AREA)

Abstract

L'invention permet d’éviter que les caractéristiques acoustiques d'un dispositif de haut-parleur (1) soient dégradées. Le dispositif de haut-parleur (1) a un cadre (6), un corps oscillant (3) et un circuit magnétique (2) tous deux supportés par le cadre (6), et un support (4) disposé sur le circuit magnétique (2) et s’étendant dans une direction d'émission sonore. Le corps oscillant (3) a un diaphragme (31) et une bobine vocale (32) qui est fixée au diaphragme (31) et insérée approximativement sur l'intervalle magnétique (2G) du circuit magnétique (2). Le diaphragme (31) a sa circonférence externe raccordée au cadre (6) de manière à osciller librement et sa circonférence interne supportée par le support (4) de manière à osciller librement. Le support (4) a un premier trou (401) percé selon une direction axiale. Au niveau d'une partie du support (4) ou du circuit magnétique (2), le second trou (402) est percé selon une direction orthogonale à la direction axiale en communication avec un premier trou (401).
PCT/JP2008/065593 2008-08-29 2008-08-29 Dispositif de haut-parleur WO2010023759A1 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
JP2010510577A JP4898957B2 (ja) 2008-08-29 2008-08-29 スピーカ装置
PCT/JP2008/065593 WO2010023759A1 (fr) 2008-08-29 2008-08-29 Dispositif de haut-parleur

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Application Number Priority Date Filing Date Title
PCT/JP2008/065593 WO2010023759A1 (fr) 2008-08-29 2008-08-29 Dispositif de haut-parleur

Publications (1)

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WO2010023759A1 true WO2010023759A1 (fr) 2010-03-04

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PCT/JP2008/065593 WO2010023759A1 (fr) 2008-08-29 2008-08-29 Dispositif de haut-parleur

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WO (1) WO2010023759A1 (fr)

Cited By (1)

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WO2016051696A1 (fr) * 2014-10-03 2016-04-07 パナソニックＩｐマネジメント株式会社 Haut-parleur

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* Cited by examiner, † Cited by third party
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Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0528198U (ja) * 1991-03-11 1993-04-09 オンキヨー株式会社 薄形ドーム型スピーカ
JP2007325075A (ja) * 2006-06-02 2007-12-13 Pioneer Electronic Corp スピーカー装置及びその製造方法

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0528198U (ja) * 1991-03-11 1993-04-09 オンキヨー株式会社 薄形ドーム型スピーカ
JP2007325075A (ja) * 2006-06-02 2007-12-13 Pioneer Electronic Corp スピーカー装置及びその製造方法

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2016051696A1 (fr) * 2014-10-03 2016-04-07 パナソニックＩｐマネジメント株式会社 Haut-parleur

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