WO2011077560A1 - スピーカ用振動体、スピーカ装置 - Google Patents
スピーカ用振動体、スピーカ装置 Download PDFInfo
- Publication number
- WO2011077560A1 WO2011077560A1 PCT/JP2009/071639 JP2009071639W WO2011077560A1 WO 2011077560 A1 WO2011077560 A1 WO 2011077560A1 JP 2009071639 W JP2009071639 W JP 2009071639W WO 2011077560 A1 WO2011077560 A1 WO 2011077560A1
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- WIPO (PCT)
- Prior art keywords
- diaphragm
- link
- speaker
- voice coil
- speaker device
- Prior art date
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Classifications
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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
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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
- H04R9/00—Transducers of moving-coil, moving-strip, or moving-wire type
- H04R9/02—Details
- H04R9/04—Construction, mounting, or centering of coil
- H04R9/046—Construction
- H04R9/047—Construction in which the windings of the moving coil lay in the same plane
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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
- H04R2209/00—Details of transducers of the moving-coil, moving-strip, or moving-wire type covered by H04R9/00 but not provided for in any of its subgroups
- H04R2209/027—Electrical or mechanical reduction of yoke vibration
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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
- H04R9/00—Transducers of moving-coil, moving-strip, or moving-wire type
- H04R9/06—Loudspeakers
- H04R9/063—Loudspeakers using a plurality of acoustic drivers
Definitions
- the present invention relates to a speaker vibrating body, a speaker device, and the like.
- Patent Document 1 describes a phase inversion type speaker device.
- a speaker unit and a passive vibrator (passive radiator) which is a vibration system obtained by removing a drive system such as a magnetic circuit from the speaker unit, are attached to one cabinet.
- Good low frequency characteristics can be obtained as compared with a speaker device to which a speaker unit is attached.
- This speaker unit uses a general dynamic speaker device.
- the dynamic speaker device is joined to a frame 3J, a cone-shaped diaphragm 21J, an edge 4J that supports the diaphragm 21J on the frame 3J, and an inner peripheral portion of the diaphragm 21J.
- the voice coil bobbin 610J, the damper 7J that supports the voice coil bobbin 610J on the frame 3J, the voice coil 611J wound around the voice coil bobbin 610J, the yoke 51J, the magnet 52J, and the plate 53J, and the voice coil 611J are arranged.
- the voice coil bobbin 610J vibrates due to the Lorentz force generated in the voice coil 611J in the magnetic gap.
- the plate 21J is driven.
- the passive vibrator vibrates by the air pressure as a driving force for the passive vibrator emitted from the back side of the speaker unit attached to the same cabinet.
- the vibration of the passive vibrating body vibrates in substantially the same phase as the speaker unit when vibrating at a resonance frequency (hereinafter referred to as a resonance frequency) determined by air compliance in the cabinet and the mass of the passive vibrating body.
- a resonance frequency a resonance frequency determined by air compliance in the cabinet and the mass of the passive vibrating body.
- the speaker unit vibrates in substantially the opposite phase. For this reason, there is a problem that the sound pressure at the resonance frequency or lower is lowered and the acoustic characteristics are reduced.
- the resonance frequency is an anti-resonance frequency and is represented by (1 / 2 ⁇ ) ⁇ (S c / M p ) 1/2 (S c : equivalent mechanical stiffness inside the cabinet, M p : passive vibration) Body equivalent mechanical mass).
- a voice coil 611J is disposed on the opposite side to the acoustic radiation side of the diaphragm 21J, and the voice coil 611J and the voice coil bobbin 610J are arranged.
- the vibration direction is the same as the vibration direction of the diaphragm 21J.
- the region for vibrating the diaphragm 21J, the region for vibrating the voice coil bobbin 610J, the region where the magnetic circuit is disposed, and the like are in the vibration direction (acoustic radiation direction) of the diaphragm 21J.
- the overall height of the speaker unit must be relatively large.
- the size of the speaker unit diaphragm 21J along the vibration direction is the same as the size of the cone-shaped diaphragm 21J along the vibration direction, and the diaphragm 21J is supported by the frame 3J.
- the magnetic circuit mainly includes a magnet height (d) corresponding to the height from the upper surface of the yoke 51J, and the magnetic circuit mainly includes the thickness (e) of the yoke 51J.
- the vibration direction of the voice coil bobbin 610J and the vibration direction of the diaphragm 21J are the same direction, if the amplitude of the diaphragm 21J is increased to obtain a large volume, In order to ensure the vibration stroke of the voice coil bobbin 610J, the overall height of the speaker device becomes large, and it is difficult to achieve thinning of the device. That is, there is a problem that it is difficult to achieve both a reduction in device thickness and an increase in volume.
- the conventional speaker device when the speaker unit is arranged in the cabinet, the conventional speaker device has a cabinet on the back side of the speaker unit depending on the overall height of the speaker unit in order to secure a sufficient volume of the back side space of the speaker unit. I have to take a large depth. As a result, the entire speaker device including the cabinet is enlarged, and there is a problem that the installation space of the speaker device is likely to be restricted. In particular, in a vehicle-mounted speaker or the like, a space in which the speaker device can be installed is limited, and there is a problem that the speaker unit cannot be arranged in a cabinet having a sufficient volume.
- the present invention is an example of a problem to deal with such a problem. That is, it is possible to improve the acoustic characteristics of low-frequency reproduction, to provide a thin speaker device that can radiate a large volume of reproduced sound, and to reduce the thickness of the entire speaker device including the cabinet. It is an object of the present invention that a sufficient acoustic performance of the speaker unit can be obtained by sufficiently securing the volume of the speaker.
- the present invention includes at least the configurations according to the following independent claims.
- a speaker vibrating body that vibrates by the operation of a driving unit, and a plurality of diaphragms that are supported by a stationary unit that supports the driving unit so as to freely vibrate, and of the plurality of diaphragms, facing each other
- a diaphragm connecting portion that is provided between the first diaphragm and the second diaphragm, and connects the first diaphragm and the second diaphragm so as to move closer to or away from each other.
- a speaker vibrating body comprising:
- FIG. 1 is an explanatory diagram for explaining a speaker vibration body according to an embodiment of the present invention, in which FIG. 1 (a) is a plan view and FIG. It is the top view which showed the specific structural example of the diaphragm connection part. It is explanatory drawing which showed the other form of the vibrating body for speakers. It is explanatory drawing which showed the example of the form of the speaker apparatus provided with the vibrating body for speakers as a passive vibrating body. It is the graph which compared the sound pressure frequency characteristic of the conventional speaker apparatus and the speaker apparatus which concerns on embodiment of this invention. It is explanatory drawing which showed the speaker apparatus which concerns on other embodiment of this invention.
- a speaker unit (same figure (a)) provided with the vibrating body for speakers and the speaker apparatus (same figure (b)) provided with this speaker unit are shown.
- It is explanatory drawing which showed the basic composition of the speaker unit provided with the vibration direction conversion part (the figure (a) is sectional drawing along the X-axis direction, the figure (b) is explanatory drawing which showed operation
- movement of a vibration direction conversion part It is explanatory drawing explaining the structural example and operation
- FIG. 2A and 2B are explanatory views for explaining a speaker vibrating body according to an embodiment of the present invention.
- FIG. 2A is a plan view
- FIG. 2B is a cross-sectional view taken along the line AA in FIG. is there.
- the speaker vibrating body a100 vibrates by the operation of a driving unit (not shown), and includes a plurality of diaphragms a10 and a diaphragm connecting part a20.
- the plurality of diaphragms a10 are supported to be able to vibrate by the stationary part that supports the drive part described above.
- the diaphragm connecting portion a20 is provided between the first diaphragm a11 and the second diaphragm a12 facing each other among the plurality of diaphragms a10, and the first diaphragm a11 and the second diaphragm a12. Are connected to each other so as to be close to or separated from each other.
- the outer peripheral part a10R of the first diaphragm a11 and the outer peripheral part a10R of the second diaphragm a12 are cylindrical diaphragm support parts that surround a space aS sandwiched between the first diaphragm a11 and the second diaphragm a12. A15 is supported so as to be able to vibrate.
- the outer peripheral part a10R of the diaphragm a10 is supported by the diaphragm support part a15 via the edge a14.
- the diaphragm support portion a15 is the stationary portion described above.
- the space surrounded by the first diaphragm a11, the second diaphragm a12, the edge a14, and the diaphragm support portion a15 may be substantially sealed.
- the diaphragm a10 is formed in a flat plate shape and has rigidity in the vibration direction of the diaphragm a10.
- the diaphragm connecting portion a20 includes a link mechanism a20L formed by a rigid link portion a21.
- the link mechanism a20L includes a joint part a22 that is formed between the link part a21 and the diaphragm a10 and can be bent or bent.
- the link part a21 is connected to the diaphragm a10 or a link connecting part 24a described later directly or via another member.
- the link mechanism a20L is formed substantially symmetrically with respect to the central axis a20D between the first diaphragm a11 and the second diaphragm a12.
- the link part a21 has a first link part a21A having a joint part a22 at one end and the other end on the first diaphragm a11 side, and a joint part a22 at one end and the other end on the second diaphragm a12 side.
- the link mechanism a20L includes two link portions a21B, and the link mechanism a20L is configured so that the angles of the first link portion a21A and the second link portion a21B are changed by the vibration of the first diaphragm a11 or the second diaphragm a12.
- a link connecting portion a24 that connects the other end of the first link portion a21A and the other end of the second link portion a21B.
- one end of the link portion a21 arranged on the diaphragm side has rigidity.
- the first link portion a21A and the second link portion a21B are provided so as to be inclined in directions opposite to each other with respect to the vibration direction (Z direction in the drawing) of the diaphragm a10, and the link connecting portion a24 is It is provided so as to be movable in a direction (X direction in the drawing) that intersects the vibration direction of the diaphragm a10. Between the other end of the first link part a21A, the other end of the second link part a21B, and the link connecting part a24, a joint part a22 that can be bent or bent is formed.
- each of the first link portion a21A and the second link portion a21B includes a plurality of substantially parallel link portions a21.
- the link part a21 and the diaphragm a10 or the link connecting part a24 described later may be integrally formed, or may be connected as another member via another member such as an adhesive or a buffer member. That is, the link part a21 and the diaphragm a10 or the link connection part a24 are connected directly or via another member.
- the diaphragm connecting portion a24 includes a reference plane a20A between the first diaphragm a11 and the second diaphragm a12, and the first diaphragm a11 and the second diaphragm a12 are mutually connected to the reference plane a20A.
- the reference plane a20A approaches or separates and is substantially stationary with respect to the proximity or separation of the first diaphragm a11 and the second diaphragm a12, and the first diaphragm a11 and the second diaphragm It vibrates with respect to the integral vibration of a12.
- the reference plane a20A when the reference plane a20A is substantially stationary with respect to the proximity or separation of the first diaphragm a11 and the second diaphragm a12, the first diaphragm a11 or the second diaphragm a12. The position in the vibration direction is not substantially changed. Further, when the reference plane a20A vibrates with respect to the integral vibration of the first diaphragm a11 and the second diaphragm a12, the vibration of the first diaphragm a11 or the second diaphragm a12. The position in the direction changes substantially.
- Such a speaker vibrating body a100 is mechanically connected by a diaphragm connecting part a20 so that the first diaphragm a11 and the second diaphragm a12 vibrate in opposite directions.
- the speaker vibration body a100 is mounted as a passive vibration body in a cabinet equipped with a speaker unit, the pressure change inside the cabinet accompanying the operation of the speaker unit is mechanically reversed to generate sound waves outside the cabinet.
- the low frequency characteristics can be improved even with a smaller cabinet volume.
- the speaker vibrating body a100 is directly driven, the sound waves radiated from the first diaphragm a11 and the second diaphragm a12 can be radiated in substantially the same phase and in opposite directions.
- FIG. 3 is a plan view showing a specific configuration example of the diaphragm connecting portion a20 (a plan view with the diaphragm a10 removed in FIG. 2).
- the link connection part a24 is formed by the plate-like body, and the link part a21 is formed so as to be partially cut out from the link connection part a24.
- a joint part a22 is formed at the boundary between the link connecting part a24 and the link part a21.
- the 1st link part a21A and the 2nd link part a21B are formed by bonding together a pair of plate-shaped objects.
- the link connecting part a24 and the link part a21 may be integrally formed so that the joint part a22 can be bent or bent, or the link part a21 is connected to the link connecting part a24 to bend or bend the joint part a22. You may make it freely.
- a joint part a22 is also formed at the end of the link part a21 opposite to the link connection part a24, and a connection part a26 connected to the diaphragm a10 is formed at the end of the joint part a22.
- the link connecting part a24 is supported by the diaphragm support part a15 through a suspension (holding part) a25 so as to be able to vibrate in the direction of the arrow.
- the link connecting portion a24 may be restricted or suppressed from vibrating in a direction intersecting the arrow direction by a suspension (holding portion) a25.
- a direction intersecting with the arrow direction for example, a direction (the former direction) passing through two suspensions a25 facing each other via the diaphragm connecting portion a20, or the first diaphragm a11 or the second diaphragm a12. Vibration direction (the latter direction).
- the suspension a25 restricts the vibration of the link connection part a24 in the former direction and suppresses the vibration of the link connection part a24 in the latter direction.
- FIG. 4 is an explanatory view showing another form of the speaker vibrating body (the parts common to the above-mentioned form are given the same reference numerals, and the duplicate explanation is partially omitted). Note that the space surrounded by the first diaphragm a11, the second diaphragm a12, the edge a14, and the diaphragm support portion a15 may be substantially sealed.
- a speaker vibrating body a100A shown in FIG. 6A includes a first link portion a21A and a second link portion a21B each having a pair of link portions a21 inclined in opposite directions.
- the pair of first link portions a21A, a21A and the pair of second link portions a21B, a21B form a pantograph-like link mechanism, and the ends of the first link portion a21A and the second link portion a21B
- the parts are connected by a link connecting part a24.
- the link connecting part a24 is supported by a suspension (holding part) a25 so as to be movable in the X-axis direction.
- the first diaphragm a11 and the second diaphragm a12 are mechanically connected so as to be close to or away from each other.
- the first link portion a21A and the second link portion a21B each include a plurality of parallel link portions a21, as in the example shown in FIG.
- the first link portion a21A and the second link portion a21B are connected to the link connection portion a24 at different positions.
- the connecting portion between the link connecting portion a24 and the first link portion a21A or the second link portion a21B is a joint portion a22 in which both of them are bent or bent.
- the first diaphragm a11 and the second diaphragm a12 are mechanically connected so as to be close to or away from each other.
- FIG. 5 is an explanatory diagram showing an example of a speaker device including the above-described speaker vibrating body as a passive vibrating body.
- the speaker device a1 includes the above-described speaker vibrating body a100, a speaker unit a200 serving as a driving unit, and a cabinet a50 serving as a stationary unit.
- the diaphragm support part a15 of the speaker vibrating body a100 described above is supported by the cabinet a50.
- the inside of the cabinet a50 forms a sealed space, the first diaphragm a11 faces the outside of the cabinet a50, and the second diaphragm a12 faces the inside of the cabinet a50.
- the acoustic radiation surface of the first diaphragm a11 faces the space outside the cabinet a50
- the acoustic radiation surface of the second diaphragm a12 faces the space inside the cabinet a50.
- the acoustic radiation surface of the first diaphragm a11 may be disposed at substantially the same position, outside, or inside, for example, with respect to a part of the cabinet a50 that supports the first diaphragm a11.
- the space surrounded by the first diaphragm a11, the second diaphragm a12, the edge a14, and the diaphragm support portion a15 may be substantially sealed.
- the speaker unit a200 is supported by the cabinet a50 at a position different from the speaker vibrating body a100 as a driving unit of the speaker vibrating body a100.
- the speaker unit a200 includes a frame a201 as a stationary part, a diaphragm a202 supported by the frame a201, a voice coil a203 supported by the diaphragm a202, and a part of the voice coil a203.
- a magnetic circuit a204 having a magnetic gap a204G and supported by the frame a201.
- the outer periphery of the diaphragm a202 is supported by the frame a201 via the edge a205, and the voice coil a203 is connected to the diaphragm a202.
- the magnetic circuit a204 includes at least a yoke and a magnet, and a plate as necessary.
- the magnetic circuit a204 is an external magnetic circuit.
- the magnetic circuit a204 may be an internal magnetic circuit, or an internal / external magnetic combined magnetic circuit in which magnets are arranged inside and outside the boiler coil a203. I do not care.
- Such a speaker device a1 drives the speaker vibrating body a100 with air pressure, a change in air pressure, or a sound wave generated on the opposite side of the acoustic radiation surface of the speaker unit a200 by driving the speaker unit a200. That is, the speaker vibrating body a100 vibrates due to a pressure change inside the cabinet a50 generated by driving the speaker unit a200.
- the first diaphragm a11 connected to the second diaphragm a12 via the diaphragm connecting part a20 is opposite to the second diaphragm a12 by the link mechanism of the diaphragm connecting part a20. Will be moved to. That is, the first diaphragm a11 and the second diaphragm a12 move so as to be separated from each other.
- the first diaphragm a11 and the second diaphragm a12 of the speaker vibration element a100 also return to the neutral position.
- FIG. 5C when the diaphragm a202 of the speaker unit a200 moves from the neutral position toward the direction ⁇ SS opposite to the acoustic radiation direction, the pressure inside the cabinet a50 tends to be positive. Then, the second diaphragm a12 of the speaker vibrating body a100 is moved so as to be pushed out of the cabinet a50.
- the first diaphragm a11 connected to the second diaphragm a12 via the diaphragm connecting part a20 is opposite to the second diaphragm a12 by the link mechanism of the diaphragm connecting part a20. Will be moved to. That is, the first diaphragm a11 and the second diaphragm a12 move so as to be close to each other.
- the first diaphragm a11 and the second diaphragm a12 in the speaker vibrating body a100 vibrate with substantially the same amplitude in directions opposite to each other.
- the diaphragm a202 of the speaker unit a200 facing the acoustic radiation direction SS and the first diaphragm a11 of the speaker vibrating body a100 vibrate in substantially the same direction and in substantially the same phase.
- the pressure change inside the cabinet a50 is mechanically reversed and becomes a sound wave radiated to the outside of the cabinet a50. Even if the cabinet volume is small, the low frequency characteristics of the speaker device a1 can be effectively improved.
- FIG. 6 is a graph comparing the sound pressure frequency characteristics of the conventional speaker device and the speaker device according to the embodiment of the present invention.
- the solid line (a) in the graph represents the characteristics of the speaker device a1 according to the embodiment of the present invention
- the dashed line (b) in the graph represents the conventional phase-inverted speaker device
- the broken line (c) in the graph represents the characteristics of the sealed speaker device. Show.
- the speaker unit a200 is the same, and the cabinet a50 has the same total volume.
- the speaker vibrating body a100 and the passive diaphragm Ja having the same total area are used.
- the horizontal axis of the graph represents frequency (Hz) and the vertical axis represents sound pressure (dB).
- the conventional phase-inverted speaker device shown in (b) has a sound pressure higher than that of the sealed speaker device shown in (a) in the band f2, but the lower side ( There is a problem that the sound pressure suddenly drops at a frequency lower than the resonance frequency, and the sound pressure is reduced in the lowest sound range of the band f1 as compared with the sealed speaker device.
- the speaker device a1 according to the embodiment of the present invention exhibits the same level of sound pressure as the conventional phase-inverted speaker device (b) and the sealed speaker device (c) in the band f2, and further. In the low frequency band f1, a higher sound pressure can be shown compared to the conventional phase-inverted speaker device (b) and the sealed speaker device (c).
- FIG. 7 is an explanatory view showing a speaker device according to another embodiment of the present invention.
- the space surrounded by the first diaphragm a11, the second diaphragm a12, the edge a14, and the diaphragm support part a15 may be substantially sealed.
- the speaker device a1A includes a speaker vibrating body a100C, a speaker unit a200 serving as a driving unit, and a cabinet a50 serving as a stationary unit.
- the diaphragm connecting part a20 is supported on the cabinet a50 side via a holding part a40 that allows the link connecting part a24 to move.
- the holding part a40 includes a first holding part a41 that supports the diaphragm coupling part a20 on an annular part a51 that surrounds the diaphragm coupling part a20, and an annular part a51 on a stationary part (diaphragm support part a15) including a cabinet a50.
- a second holding portion a42 that elastically supports is provided.
- the diaphragm connecting part a20 has a link connecting part a24 formed of a plate-like body, and a link part a21 is formed so as to be partially cut out from the link connecting part a24. Yes.
- a joint part a22 is formed at the boundary between the link connecting part a24 and the link part a21. Then, the first link part a21A and the second link part a21B are formed by pasting together a pair of the plate-like bodies.
- the entire geometry of the speaker vibrating body a100C can be moved in the same manner as a conventional phase-inverted speaker device. That is, the first diaphragm a11 and the second diaphragm a12 are integrally moved by the elastic support of the second holding part a42, so that the second diaphragm a12 can be vibrated.
- the link mechanism of the diaphragm connecting portion a20 functions to vibrate the first diaphragm a11 in the opposite direction.
- the first holding part a41 regulates the movement of the link connecting part a24 only in the direction of the arrow, and the second holding part a42 supports the annular part a42 so that it can be elastically displaced in each direction.
- the link connecting portion a24 may be regulated or suppressed by the first holding portion a41 in the vibration intersecting the arrow direction.
- a direction intersecting the arrow direction for example, a direction (the former direction) passing through the two first holding portions a41 opposed via the diaphragm connecting portion a20, or the first diaphragm a11 or the second direction.
- the vibration direction of the vibration plate a12 (the latter direction) is included.
- the first holding part a41 restricts the vibration of the link connection part a24 in the former direction and suppresses the vibration of the link connection part a24 in the latter direction.
- the speaker device a1A When the sound pressure frequency characteristics of the speaker device a1A are compared with other examples, the speaker device a1A according to this embodiment has a high sound in a band f1 (see FIG. 6) lower than the resonance frequency, as in the speaker device a1 described above.
- the band f2 (see FIG. 6) can exhibit a sound pressure frequency characteristic that is more stable (suppressed dipping) in the band f2 (see FIG. 6).
- FIG. 8 shows a speaker unit including the speaker vibrating body (FIG. 8A) and a speaker device including the speaker unit (FIG. 8B).
- a first diaphragm a11 and a second diaphragm a12 are connected via a diaphragm connecting portion a20.
- Diaphragm coupling unit a20 are provided pair, and one of the diaphragm connecting portion a20 1 and the other diaphragm coupling portion a20 2 is provided symmetrically.
- the diaphragm connecting portion a20 (a20 1 , a20 2 ) includes a first link part a21A having a joint part a22 at one end and the other end on the first diaphragm a11 side, and one end on the second diaphragm a12 side.
- a second link portion a21B having a joint portion a22 at the other end, and the other end of the first link portion a21A and the second link so that the first link portion a21A and the second link portion a21B change the angle.
- the link connection part a24 connected with the other end of the link part a21B via the joint part a22 is provided.
- the first diaphragm a11 and the second diaphragm a12 are supported by the stationary part a52 via the edge a14.
- the speaker unit a200A includes a drive unit a30 that drives the speaker vibrating body a100D.
- the drive unit a30 is provided in each of the pair of the diaphragm coupling part a20 (a20 1, a20 2) .
- the drive part a30 has a voice coil a31 connected directly to the diaphragm connection part a20 or via another member, and a magnetic gap a33G in which a part of the voice coil a31 is arranged, and is supported by the stationary part.
- the circuit a33 is provided, and the first diaphragm a11 and the second diaphragm a12 are vibrated through the diaphragm coupling part a20 by the vibration of the voice coil a31.
- the magnetic circuit a33 is supported by the stationary part a52 described above.
- the voice coil a31 is connected to the link connecting portion a24 of the diaphragm connecting portion a20 directly or via another member, and the link connecting portion a24 is connected to the first diaphragm a11 and the second diaphragm a12 by vibration of the voice coil a31.
- the first link portion a21A and the second link portion a21B are changed in angle by vibrating in a direction crossing the vibration direction.
- Such a speaker unit a200A can be mounted in various cabinets to form a speaker device a1B.
- a speaker unit a200A is mounted on a cabinet a50 that supports at least a passive vibrator a101 having a diaphragm.
- the first diaphragm a11 includes an acoustic radiation surface that emits sound waves
- the second diaphragm a12 disposed inside the cabinet a50 has a driving force release surface that drives the passive vibrator a101.
- the passive vibrator a101 is provided as a passive radiator, but a duct having a sound emitting hole for emitting sound waves toward the outside of the cabinet a50 may be provided instead of the passive vibrator a101. .
- Such a speaker device a1B is sealed when the first diaphragm a11 and the second diaphragm a12 are vibrated by the driving unit a30 and the first diaphragm a11 and the second diaphragm a12 are brought into a close state.
- the pressure inside the cabinet a50 tends to be negative, and when the first diaphragm a11 and the second diaphragm a12 are separated, the pressure inside the cabinet a50 tends to be positive.
- the passive vibrator a101 vibrates due to the pressure change inside the cabinet a50.
- the inside of the cabinet a50 tends to have a positive pressure and the passive vibrator a101 also in the acoustic radiation direction.
- the inside of the cabinet a50 tends to have a negative pressure, and the passive vibrator a101 vibrates in the direction opposite to the acoustic radiation direction.
- the diaphragm of the speaker unit a200A and the diaphragm of the passive vibrator a101 vibrate in substantially the same phase, and the low-frequency reproduction function similar to that of the speaker device a1 described above can be obtained.
- an acoustic adjustment member a13 as shown by a broken line can be attached to the second diaphragm a12, or the second diaphragm a12 can be replaced with the acoustic adjustment member a13.
- a member having a large weight relative to the first diaphragm a11 having an acoustic radiation surface or a member having a plurality of openings can be employed. According to this embodiment, it is possible to suppress sound waves generated from the second diaphragm side when the speaker unit a200A is provided alone in the cabinet.
- a speaker unit a200A By applying such a speaker unit a200A to a bass reflex type speaker device, it is possible to obtain a speaker device in which unnecessary vibration generated in a cabinet or the like is relatively small.
- the second diaphragm side When the second diaphragm side is made heavier than the first diaphragm a11 by the acoustic adjustment member a13, the second diaphragm side functions as a stationary part, and unnecessary vibration generated in the link mechanism and the link portion is generated. Can be deterred.
- the reaction force caused by the vibration of the second diaphragm a12 can be made relatively small, and unnecessary vibration generated in the link mechanism or the link portion can be reduced. Can be deterred.
- the speaker unit used for the speaker device a1 various forms are applicable. As in the example shown in FIG. 5, instead of the dynamic-type speaker unit a200 having a cone-shaped diaphragm, a speaker unit having a vibration direction conversion unit as shown below is used, thereby reducing the thickness of the speaker unit itself. It is possible to simultaneously increase the volume, and when the speaker unit is arranged in the cabinet, a sufficient volume of the space on the back side of the speaker unit can be secured without increasing the depth of the cabinet. This makes it possible to reduce the thickness of the entire speaker device including the cabinet.
- the link mechanism of the vibration direction conversion part shown below is applicable as each part (a link part, a link connection part, a joint part, etc.) of the link mechanism of the diaphragm connection part mentioned above.
- a contact avoidance portion and an adhesive member accommodating portion which will be described later, can also be formed in the link mechanism of the diaphragm connecting portion.
- FIG. 9 is an explanatory view showing the basic configuration of a speaker unit provided with a vibration direction converter (FIG. 9A is a cross-sectional view along the X-axis direction, and FIG. 9B shows the operation of the drive unit). Explanatory drawing).
- the speaker unit 1U includes a diaphragm 10, a stationary part 100 that supports the diaphragm 10 so as to freely vibrate along a vibration direction, and a driving part 14 that is provided in the stationary part 100 and that vibrates the diaphragm 10 with an audio signal.
- the drive unit 14 includes a magnetic circuit 20 that forms a magnetic gap 20G, a voice coil 30 that receives an audio signal and vibrates in a direction different from the vibration direction of the diaphragm 10, and the direction of vibration of the voice coil 30.
- a vibration direction conversion unit 50 that converts and transmits the vibration to the diaphragm 10 is provided.
- the voice coil 30 is supported by the voice coil support unit 40, but the voice coil 30 itself may be connected to the vibration direction conversion unit 50.
- the vibration direction of the voice coil 30 is defined as the X-axis direction, and the two directions orthogonal thereto are defined as the Y-axis direction and the Z-axis direction, respectively.
- the diaphragm 10 may have a substantially rectangular shape in plan view, a circular shape, an elliptical shape, or other shapes.
- the cross-sectional shape of the diaphragm 10 can be formed in a predetermined shape such as a flat plate shape, a dome shape, or a cone shape, for example.
- the cross-sectional shape of the diaphragm 10 is a plane, but may be a curved shape.
- the overall height of the diaphragm 10 may be made relatively small, and the speaker unit 1U may be thinned.
- the stationary part 100 is a general term for parts that support vibrations such as the vibration plate 10 and the driving part 14.
- the stationary part 100 includes a frame 12, a yoke part that also functions as the frame 12, and a mounting unit (to be described later). It hits.
- the stationary part 100 is not intended to be completely stationary per se, but is entirely oscillated under the influence of the vibration of the driving part 14 or other force. Also good.
- the outer peripheral portion of the diaphragm 10 is supported by a frame 12 that is a stationary portion 100 via an edge 11.
- the drive unit 14 includes a magnetic circuit 20, a voice coil 30, and a vibration direction conversion unit 50.
- the voice coil 30 vibrates in a uniaxial direction along the magnetic gap 20G of the magnetic circuit 20, and the vibration is converted into a vibration direction conversion unit. 50 changes its direction and transmits it to the diaphragm 10.
- the voice coil 30 vibrates along the X-axis direction, and the diaphragm 10 is arranged so as to vibrate in the Z-axis direction perpendicular to the X-axis direction.
- the diaphragm 10 is vibrated in the Z-axis direction by converting the vibration in the direction into a changing oblique angle.
- the magnetic circuit 20 includes a magnet 21 (21A, 21B) and a magnetic pole member (yoke part) 22 (22A, 22B) so that a plurality of magnetic gaps 20G are arranged along the vibration direction (for example, the X-axis direction) of the voice coil 30. It has.
- the magnetic pole directions of the magnets 21 (21A, 21B) are set so that the magnetic field directions of the pair of magnetic gaps 20G are opposite to each other ( ⁇ Z-axis direction), and the magnetic gaps having magnetic fields in the opposite directions to each other.
- a direction along the magnetic gap 20G ( ⁇ X-axis) is arranged in the voice coil 30.
- Direction) driving force (Lorentz force, electromagnetic force).
- the arrangement relationship between the magnet 21 and the magnetic pole member (yoke part) 22 is not limited to the illustrated example.
- rigidity including bending rigidity and torsional rigidity
- a plurality of conductive layers are formed on the outer side of the conducting wire in the flat insulating member as the voice coil support portion 40.
- the conductive layer 43 is electrically connected to the lead line 31 (see FIG. 27) drawn from the start point and end point of the conducting wire.
- the lead wire 31 is constituted by a part of a conductive member described later. Further, it is electrically connected to the outside via a holding unit 15 described later, and functions as a relay line for inputting a voice signal from the outside to the voice coil 30.
- a space for routing the wiring is required separately.
- the conductive layer 43 see FIG.
- the voice coil 30 and the voice coil support portion 40 are formed in a flat plate shape, but are not limited to this, and may be formed in a cylindrical shape.
- the vibration direction conversion portion is connected to the end portion on the vibration direction conversion portion 50 side so that the angle can be changed. You may attach the flat cover part which makes it possible.
- the voice coil 30 is formed by winding a conducting wire (conductive member) to which an audio signal is input, and is itself arranged so as to be able to vibrate on the stationary part 100 or the stationary part 100 via the voice coil support part 40. Is arranged so as to freely vibrate.
- the voice coil support portion 40 can be formed of, for example, a flat insulating member, and the voice coil 30 is supported on the surface or inside thereof.
- rigidity including bending rigidity and torsional rigidity
- the voice coil 30 is held on the stationary part 100 by a holding part (not shown).
- the holding unit is configured to hold the voice coil 30 or the voice coil support unit 40 so as to freely vibrate along the vibration direction (for example, the X-axis direction) with respect to the stationary unit 100 and to prevent the voice coil 30 or the voice coil support unit 40 from moving in other directions.
- the holding portion can be deformed along the vibration direction (for example, the X-axis direction) of the voice coil 30, and can be formed by a curved plate member having rigidity in a direction crossing the vibration direction.
- the voice coil 30 is relatively large when driving the speaker by making the length of the voice coil in the direction orthogonal to the vibration direction of the voice coil 30 relatively large compared to the length of the voice coil 30 in the vibration direction. A driving force can be obtained.
- One end of the vibration direction conversion unit 50 is connected to the voice coil 30 directly or via another member so that the angle can be changed, and the other end is directly connected to the diaphragm 10 so that the angle can be changed directly or via another member. And are arranged obliquely with respect to the vibration direction of the diaphragm 10 and the vibration direction of the voice coil 30. That is, the vibration direction conversion part 50 is formed at the both ends of the link part 51, the rigid link part 51 that is obliquely provided so that the angle can be freely changed between the voice coil 30 or the voice coil support part 40 and the diaphragm 10. And a joint portion 52 serving as a fulcrum for the angle change of the vibration direction converter 50.
- the connecting portion 53 of the vibration direction conversion unit 50 is, for example, an adhesive as a bonding member or both surfaces of the vibration plate 10 or the voice coil 30 or the attached member 200 including other members than the vibration plate 10 and the voice coil 30. They are connected by a connecting member such as a tape or a screw as a fastening member, and the joint portion 52 is arranged so as to be close to the attached member 200.
- the connecting portion 53 (53A) at one end of the vibration direction changing portion 50 is connected to the voice coil 30 or the voice coil support portion 40 via the connecting portion 60, but directly without using the connecting portion 60. You may connect.
- the connecting portion 60 is formed between the end portion on the voice coil side of the vibration direction converting portion 50 and the end portion on the vibration direction changing portion side of the voice coil 30 or the voice coil support portion 40, and both ends thereof in the vibration direction. They are connected at intervals along the line. Moreover, the connection part 60 absorbs the thickness of the magnetic circuit 20, and is aiming at thickness reduction of a speaker unit.
- a contact avoiding portion 70 that avoids contact with the joint portion 52 is formed on the surface side of the attached member 200 adjacent to the joint portion 52 of the vibration direction changing portion 50.
- the contact avoiding portion 70 also functions as a joining member accommodating portion (constraining portion) that accommodates and restrains the joining member that joins the vibration direction changing portion 50 and the attached member 200.
- the contact avoiding portion 70 is formed in a concave shape along the joint portion 52, for example, a concave portion, a notch portion, a groove portion or the like, and the joint portion 52 and the surface of the attached member 200 disposed in the vicinity of the joint portion 52.
- a predetermined space is formed between the joint portion 52 and the adhesive member interposed between the vibration direction changing portion 50 and the attached member 200.
- a notch 71 is formed as a contact avoidance portion 70 in the connecting portion 60 to be the attached member 200 so as to be close to the joint portion 52 (52A), and a recess 72 is provided as the contact avoidance portion 70 in the diaphragm 10. It forms so that it may adjoin to joint part 52 (52B).
- a bonding member such as an adhesive or a double-sided tape
- the adhesive protrudes toward the joint part 52.
- the end portion of the double-sided tape enters the cutout portion 71 or the concave portion 72 so that the joint portion 52 does not come into contact with the end portion.
- Such a speaker unit 1U inputs a voice signal SS as an electrical signal to the voice coil 30 of the drive unit 14, and as shown in FIG.
- the voice coil 30 or the voice coil support portion 40 vibrates in the X-axis direction shown in the figure along the magnetic gap 20G of the circuit 20, for example.
- the vibration is changed in direction by the vibration direction converter 50 and transmitted to the diaphragm 10, and the diaphragm 10 is vibrated in, for example, the Z-axis direction shown in FIG. A corresponding sound is emitted.
- the speaker unit 1U can be increased even if the amplitude of the diaphragm 10 is increased by increasing the amplitude of the voice coil 30.
- the thickness in the acoustic radiation direction does not increase. As a result, a thin speaker unit capable of emitting a large volume of reproduced sound can be obtained.
- the adhesive diffuses and extends with the joining and protrudes toward the joint portion 52.
- the joint portion 52 may harden and become unable to move.
- the joint portion 52 may harden and become inoperable. There is. Further, the joint portion 52 that has been cured by adhering an adhesive or an end portion of a double-sided tape may be broken due to repeated bending, refraction, or rotational movement.
- the portion where the adhesive or the end of the double-sided tape is attached contacts or leaves the attached member 200 such as the diaphragm 10, the voice coil 30, or other members. Repeatedly, an abnormal sound (a hit sound) is generated each time.
- the vibration direction changing portion 50 and the attached member 200 are reduced. There is a problem that the coupling force is reduced, and peeling or the like occurs from the end surface, resulting in abnormal noise, or even complete peeling that leads to destruction of the speaker.
- the joint portion 52 is disposed in the vicinity of the attached member 200, the joint portion 52 comes into contact with the attached member 200, the joint portion 52 is damaged, or the vibration direction changing portion 50 is attached to the attached member. In some cases, bending, refraction, or rotational movement with respect to 200 cannot be performed. However, in this speaker unit 1U, since the contact avoiding portion 70 is formed on the surface side of the mounted member 200 close to the joint portion 52, contact with the joint member 52 is suppressed and abnormal noise is generated due to the contact. Can be suppressed.
- a bonding member such as an adhesive or a double-sided tape used to connect the connecting portion 53 of the vibration direction changing portion 50 and the attached member 200 protrudes, a contact avoiding portion that functions as a bonding member restraining portion. It is possible to prevent the movement of the joint portion 52 from being blocked by entering the 70 and adhering to the joint portion 52. As a result, the function of the joint portion 52 can be maintained while maintaining a high coupling force between the vibration direction converter 50 and the attached member 200. Since the vibration direction converter 50 reliably bends, refracts, or rotates with respect to the attached member 200, contact of the joint portion 52 to the attached member 200 due to breakage, generation of abnormal noise, and the like can be suppressed.
- the rigid vibration direction conversion unit 50 that changes the direction of the vibration of the voice coil 30 and transmits the vibration to the vibration plate 10 forms joint portions 52 on the vibration plate 10 side and the voice coil 30 side in the vibration direction of the voice coil 30. It has the link part 51 inclined with respect to it.
- the joint part 52 is a part that rotatably joins two rigid members, or a part that refracts or bends two integrated rigid parts.
- the joint portion 52 is a rigid portion formed at the end.
- the rigidity means that the vibration of the voice coil 30 is not deformed to such an extent that it can be transmitted to the diaphragm 10, and does not mean that it does not deform at all.
- the link portion 51 can be formed in a plate shape or a rod shape.
- one link portion 51 is provided, joint portions 52 (52A, 52B) are formed at both ends thereof, and one joint portion 52A is an end portion of the voice coil 30 or the voice coil support portion 40.
- the other joint portion 52B is formed on the diaphragm 10 side.
- the other joint portion 52B may be connected to the diaphragm 10 or may be connected to the diaphragm 10 via another member.
- a known member can be used.
- a metal member that improves the joint strength between the joint portion 52 and the diaphragm 10 may be selected (the diaphragm 10 is not shown in FIG. 10). is doing).
- FIG. 5A shows a case where the link portion 51 is at an intermediate position of vibration.
- the link portion 51 is obliquely provided at an angle ⁇ 0 between the voice coil 30 (or the voice coil support portion 40) and the diaphragm 10.
- the joint portion 52B on the diaphragm 10 side is disposed at a position Z 0 away from the voice coil 30 by a distance H 0 along the vibration direction of the diaphragm 10.
- the vibration direction of the voice coil 30 (or the voice coil support portion 40) is regulated so as to vibrate in one axial direction (for example, the X-axis direction), and the vibration direction of the diaphragm 10 is different from the vibration direction of the voice coil 30.
- the vibration direction is regulated so as to vibrate (eg, in the Z-axis direction).
- the position X 2 to move is formed on the end portion of the voice coil 30 joint portion 52A from the initial position X 0 to the vibration direction (-X axis direction) by [Delta] X 2 reaches Then, the inclination angle of the link portion 51 is converted to ⁇ 2 ( ⁇ 0 ⁇ 2 ), and the position of the joint portion 52B on the vibration plate 10 side is ⁇ Z 2 in the vibration direction ( ⁇ Z axis direction) of the vibration plate 10. move and reaches the position Z 2. That is, the diaphragm 10 is pushed down along the vibration direction by ⁇ Z 2 .
- the function of the vibration direction conversion unit 50 including the link part 51 and the joint part 52 converts the vibration of the voice coil 30 into the obliquely changing angle of the link part 51 and transmits it to the diaphragm 10.
- the vibration plate 10 is caused to vibrate in a direction different from the vibration direction of the voice coil 30.
- FIG. 11 is an explanatory diagram for explaining another configuration example of the vibration direction conversion unit 50 and its operation. More specifically, FIG. 5B shows the state of the vibration direction converter 50 in a state where the diaphragm 10 is located at the reference position, and FIG. FIG. 6C shows the state of the vibration direction conversion unit 50 in a state where the vibration plate 10 is displaced in the opposite direction with respect to the acoustic radiation side with respect to the reference position. (The diaphragm 10 is not shown).
- the vibration direction conversion section 50 has a function of converting the angle by receiving a reaction force from the stationary section 100 such as the frame 12 where the link portion 51 is located on the opposite side to the diaphragm side.
- the vibration direction converter 50 includes a first link portion 51A having one end as a joint portion 52A on the voice coil 30 side and the other end as a joint portion 52B on the diaphragm 10 side, and one end as a first link portion. 51 and a second link portion 51B having the other end as a joint portion 52D with the stationary portion 100.
- the first link portion 51A and the second link portion 51B are voiced.
- the coils 30 are inclined in different directions with respect to the vibration direction of the coil 30.
- the vibration direction conversion unit 50 includes a first link portion 51A having one end as a first joint portion 52A on the voice coil 30 side and the other end serving as a second joint portion 52B on the diaphragm 10 side, A second link portion 51B having one end as a third joint portion 52C with the intermediate portion of the first link portion 51A and the other end as a fourth joint portion 52D with the stationary portion 100;
- the joint portion 52A, the second joint portion 52B, and the fourth joint portion 52D are on a circumference having a diameter substantially equal to the length of the first link portion 51A centered on the third joint portion 52C. It is in.
- the joint portion 52 ⁇ / b> D is the only joint portion whose position does not change and is supported by the stationary portion 100 (or the frame 12), and applies a reaction force from the stationary portion 100 to the link portion 51. ing.
- the voice coil 30 or the voice coil support portion 40
- ⁇ X 1 in the X-axis direction from the reference position X 0
- the link part 51A and the second link part 51B rise substantially at the same angle, and the joint part 52B receives the reaction force from the stationary part 100 at the joint part 52D, and the joint part 52B reliably moves the diaphragm 10 to the reference position Z 0.
- the length a of the link part from the joint part 52A to the joint part 52C, the length b of the link part from the joint part 52C to the joint part 52B, and the length c of the link part from the joint part 52C to the joint part 52D. are substantially equal, and the joint portion 52A and the joint portion 52D are preferably disposed substantially parallel to the moving direction of the voice coil 30.
- the angle formed by the straight line passing through the joint part 52A and the joint part 52D and the straight line passing through the joint part 52B and the joint part 52D are at right angles.
- the joint portion 52B between the first link portion 51A and the diaphragm 10 moves along the Z-axis perpendicular to the X-axis.
- Can be transmitted to the diaphragm 10 by converting the vibration direction thereof into a direction perpendicular thereto.
- the vibration direction converter 50 includes the link portion 51 and joint portions 52 (52A, 52B) formed at both ends thereof.
- connection portions 53 are formed on both ends of the link portion 51 via joint portions 52.
- the first connecting portion 53A is a portion that is connected to the voice coil 30 or the voice coil support portion 40 directly or via another member and vibrates integrally with the voice coil 30, and the second connecting portion 53B. Is a portion that is connected to the diaphragm 10 directly or via another member and vibrates integrally with the diaphragm 10.
- the link portion 51, the joint portions 52A and 52B, and the first and second connection portions 53A and 53B are integrally formed, and the joint portions 52A and 52B include the joint portions 52A and 52B.
- the continuous member may be a member that forms the entirety of the link portion 51 and the first and second connection portions 53A and 53B, or the link portion 51 and the first and second connection portions 53A and 53B.
- the member which forms a part of may be sufficient.
- the joint portion 52 is formed in a linear shape extending in the width direction as shown in FIG. Further, since the link portion 51 is required to have a rigidity that does not deform, and the joint portion 52 is required to be refractable, the thickness of the joint portion 52 with respect to the thickness t1 of the link portion 51 or the connecting portion 53. By forming the thickness t2 in a thin shape, the integral member has different properties.
- the change in thickness between the joint portion 52 and the link portion 51 is formed in an inclined surface shape, and inclined surfaces 51t and 53t whose surfaces face each other at the end portions on both sides of the joint portion 52 are formed. Thereby, when the angle of the link portion 51 is changed, the thickness of the link portion 51 can be prevented from interfering with the angle change.
- the contact avoiding portion 70 is a recess or notch 71, and in the example shown in FIG.
- a space is formed between the joint portion 52A and the connecting portion 60.
- the diaphragm 10 of the mounted member 200 disposed in the vicinity of the joint portion 52B is formed with a concave portion or notch portion 72 as the contact avoiding portion 70, and a concave portion having a curved cross section in the illustrated example.
- a space is formed between the joint portion 52B and the diaphragm 10.
- the adhesive is bonded to the joint portions 52A, Even if it protrudes toward 52B, it enters the recess or notch 71, 72, so it does not adhere to the joint portions 52A, 52B, and even if attached, it is only a portion that is not a joint (a portion having rigidity that does not bend or bend). The hindrance to the bending operation or the bending operation of the joint portions 52A and 52B can be suppressed.
- a rigid member is integrated with a refracting continuous member to form a link portion or a connecting portion, and the joint portion is a portion constituted by a continuous member.
- a rigid member 50Q is attached to the surface of a continuous member 50P, which is a bendable sheet-like member, to form a link portion 51 or a connecting portion 53.
- the continuous member 50P is continuously extended in the part of the both sides straddling the joint part 52, and the joint part 52 is substantially formed only by the continuous member 50P so that bending is possible.
- the link portion 51 or the connecting portion 53 in which the rigid member 50Q is attached to the continuous member 50P is formed in a portion having rigidity.
- the link member 51 or the connecting member 53 is formed by attaching the rigid member 50Q so as to sandwich the continuous member 50P. Again, the portion where the rigid member 50Q is not attached becomes the joint portion 52.
- the rigid member forming the link portion 51 is formed in a multilayer by laminating the rigid members 50Q1 and 50Q2. Furthermore, in the same figure (c), you may make the rigid member 50Q1 or the rigid member 50Q2 into a multilayer structure. In this way, by partially attaching the rigid member 50Q to the refracting continuous member 50P, the refracting joint portion 52, the rigid link portion 51, and the connecting portion 53 can be integrally formed.
- the continuous member 50P is preferably strong and durable enough to withstand the refraction of the joint portion 52 that is repeated when the speaker unit is driven, and flexible so that no sound is emitted when the refraction operation is repeated.
- the continuous member 50P can be formed of a woven or non-woven fabric of high-strength fibers.
- woven fabrics include plain weaves of uniform materials, plain weaves with different warp and weft yarns, plain weaves with different yarn materials alternately, plain weaves with twisted yarns, flat weaves of assortment, etc.
- the high-strength fiber When all or part of the high-strength fiber is used, the high-strength fiber is arranged along the vibration direction of the voice coil support portion 40, which is sufficient for the vibration of the voice coil 30 or the voice coil support portion 40. Strength can be obtained. When warp and weft are both high-strength fibers, both the warp and wefts are evenly tensioned by tilting the fiber direction by approximately 45 ° with respect to the vibration direction of the voice coil support section 40 to improve durability. Can be made. As the high-strength fiber, an aramid fiber, a carbon fiber, a glass fiber, or the like can be used. Further, in order to adjust physical properties such as bending stress and rigidity of the continuous member, a dumping agent (damping agent, braking material) may be applied (applied).
- a dumping agent damping agent, braking material
- the rigid member 50Q is preferably lightweight, easy to mold and rigid after curing, and thermoplastic resin, thermosetting resin, metal, paper, or the like can be used. After the rigid member 50Q is formed into a plate shape, the vibration direction changing portion 50 can be formed by sticking the surface of a portion excluding the joint portion 52 of the continuous member 50P with an adhesive as a bonding agent. When a thermosetting resin is used as the rigid member 50Q, the vibration direction changing portion 50 is formed by partially impregnating the resin in the link portion 51 and the connecting portion 53 of the fibrous continuous member 50P and then curing the resin. can do. When resin or metal is used as the rigid member 50Q, the continuous member 50P and the rigid member 50Q can be integrated in the link portion 51 and the connecting portion 53 by insert molding.
- FIGS. 14 and 15 are explanatory views showing a speaker unit employing the above-described vibration direction converter
- FIG. (b) is an explanatory diagram showing the operation of the drive unit. Parts common to the above description are given the same reference numerals, and a part of the overlapping description will be explained.
- the speaker unit 1U (1A, 1B) shown in FIGS. 14 and 15 the first connecting portion 53A that is connected to the voice coil support portion 40 and vibrates integrally with the voice coil support portion 40 is connected to the diaphragm 10.
- a link mechanism 50L having a second connecting portion 53B that vibrates integrally with the diaphragm 10 and having a plurality of link portions is formed.
- the vibration direction converter 50 is formed by a link mechanism 50L including a rigid first link portion 51A and a second link portion 51B.
- the first link portion 51A has a first connection portion 53A formed on one end side via a joint portion 52A, and a second connection portion 53B formed on the other end side via a joint portion 52B.
- the second link portion 51B is formed with an intermediate portion of the first link portion 51A via a joint portion 52C on one end side, and does not move against vibration of the voice coil support portion 40 via the joint portion 52D on the other end side.
- the connecting portion 53C is formed.
- the first connecting portion 53A is connected to the end of the voice coil support portion 40 via the connecting portion 60 or directly, and the second connecting member 53B is directly connected to the diaphragm 10.
- the stationary connection portion 53 ⁇ / b> C is connected to the bottom portion 12 ⁇ / b> A of the frame 12 that becomes the stationary portion 100.
- the first link portion 51 ⁇ / b> A and the second link portion 51 ⁇ / b> B are inclined in different directions with respect to the vibration direction (X-axis direction) of the voice coil support portion 40, and the stationary portion 100 is in relation to the vibration direction conversion portion 50. It is provided on the side opposite to the diaphragm 10 side.
- the stationary portion 100 is formed by the bottom portion 12A of the frame 12, but instead, the yoke portion 22A of the magnetic circuit 20 extends below the vibration direction changing portion 50, and the yoke portion 22A is The stationary part 100 may be used.
- the joint portion 52A on the voice coil support portion 40 side moves in the X-axis direction as the voice coil support portion 40 moves, and the joint portion 52D connected to the stationary portion 100 is fixed.
- the movement of the joint portion 52A is converted into a changing angle of the first link portion 51A and the second link portion 51B by the reaction force received from the stationary part 100, and the joint portion 52B on the diaphragm 10 side Is moved in the vibration direction of the diaphragm 10 (for example, the Z-axis direction).
- the speaker unit 1U (1B) shown in FIG. 15 has the drive unit 14 shown in FIG. 14 arranged symmetrically opposite each other, and includes drive units 14 (R) and 14 (L).
- the link mechanisms 50L (R), 50L (L), the voice coil support portions 40 (R), 40 (L) and the magnetic circuits 20 (R), 20 (L) are connected to the portions 14 (R), 14 (L). Portions 60 (R) and 60 (L) are provided.
- the link mechanisms 50L (R) and (L) include a pair of first link portions 51A, a pair of second link portions 51B, a pair of first connection portions 53A, and a second connection portion that are arranged to face each other. 53B and the immovable connecting portion 53C are integrally formed to form the vibration direction changing portion 50.
- the pair of first connection portions 53A are respectively connected to the voice coil support portion 40, the second connection portion 53B is connected to the diaphragm 10, and the stationary connection portion 53C is connected to the bottom portion 12A of the frame 12.
- the two drive units 14 (R), 40 (R), 40 (L) are reversed by synchronizing the vibration directions of the voice coil support units 40 (R), 40 (L).
- the diaphragm 10 can be vibrated by combining the driving force of 14 (L). Further, since the joint portion 52B on the diaphragm 10 side can be provided at a plurality of locations, the support points of the diaphragm 10 are increased, and the vibration phase of the diaphragm 10 can be matched.
- FIGS. 16 and 17 are explanatory views showing more specific vibration direction converting portions (FIG. 16A is a perspective view, FIG. 16B is an enlarged view of portion A in FIG. 16A), and FIG. 17 (a) is a plan view of a state in which the joint portion is stretched and the whole is flattened, and FIG. 17 (b) is a side view of a state in which the joint portion is stretched and the whole is flattened).
- the vibration direction changing part 50 is formed by one integrated part, and as described above, the pair of first link parts 51A and the joint parts 52A and 52B are formed at both ends thereof, and the pair of first link parts 51A and 52B are formed. Two link portions 51B and joint portions 52C and 52D are formed at both ends thereof.
- first connection portion 53A is formed on one end side of the pair of first link portions 51A via a joint portion 52A, and the joint portions 52B formed on the other end side of the pair of first link portions 51A.
- a second connecting portion 53B is formed, and a stationary connecting portion 53C is formed between the joint portions 52D formed on the other end side of the second link portion 51B.
- the first link portions 51A and 51A and the second connection portion 53B are refracted in a convex shape, and the second link portions 51B and 51B and the stationary connection portion 53C are refracted in a concave shape.
- the joint portion 52A is formed to be refracted by the above-described continuous member 50P, and the above-described rigid member 50Q is attached to the first link portion 51A, so that the first connecting portion is formed.
- the above-described rigid member 50Q is also attached to 53A. And all the joint parts mentioned above are formed in the same composition.
- inclined surfaces 51t and 53t are formed to face each other.
- the vibration direction changing portion 50 including the link portions 51A and 51B, the joint portions, and the connecting portions 53A, 53B, and 53C is formed from an integral sheet-like component.
- the joint portion 52A is formed so as to linearly cross the integral sheet-like component, and the joint portions 52B, 52C, 52D are formed so as to partially traverse the integral sheet-like component.
- the second link portions 51B and 51B and the stationary connection portion 53C are cut out by forming a pair of cutout portions 50S along the longitudinal direction of the integral sheet-like component.
- a resin material for forming the rigid member 50Q is applied to the entire surface of the continuous member 50P that is a sheet-like member.
- V-shaped die cutting is performed. Thereafter, the above-described notch 50S is formed, and the resin material is cured.
- the resin material used here a liquid uncured resin material or a resin film can be used.
- the rigid member 50Q may be formed simultaneously with the resin material. At this time, it is preferable that a groove or a recess having a V-shaped cross section is formed in advance in a mold for molding the rigid member 50Q.
- FIGS. 18 (a) is a side view
- FIG. 18 (b) is a perspective view
- FIG. 19 is an operation explanatory view
- FIGS. 20A and 20B are explanatory diagrams of the formation example.
- This vibration direction conversion part 50 (link mechanism 50L) is a case where a pair of drive parts are provided and the vibration direction conversion parts 50 are arranged opposite to each other substantially symmetrically, and a parallel link is formed by a plurality of link portions. Yes.
- the vibration direction converter 50 has one end as a joint portion 52A (R), 52A (L) with the first connection portion 53A (R), 53A (L) and the other end as a joint with the second connection portion 53B.
- a pair of first link portions 51A (R) and 51A (L) are provided as portions 52B (R) and 52B (L).
- one end is a joint part 52C (R), 52C (L) with the intermediate part of the first link parts 51A (R), 51A (L), and the other end is a joint part 52D ( R) and 52D (L) have a pair of second link portions 51B (R) and 51B (L).
- the first connecting portion 53A is connected to the voice coil 30 or the voice coil support portion 40 directly or via the connecting portion 60 as another member, and the second connecting portion 53B is connected to the diaphragm 10.
- the stationary connection portion 53 ⁇ / b> C is connected to the bottom portion 12 ⁇ / b> A of the frame 12 that becomes the stationary portion 100, the yoke portion 22 that forms the magnetic circuit 20, and the like.
- the link mechanism 50L of the vibration direction conversion unit 50 has a function of combining the link mechanism of the embodiment shown in FIG. 14 and the parallel link mechanism, and each link portion and the connection portion are connected to the continuous member 50P.
- the rigid members 50Q are integrally formed with each other, the joint portions between the link portions are formed in a linear shape by a refracting continuous member 50P, and the link portions are formed integrally with each other via the joint portions. Yes.
- the second connecting portion 53B disposed in the vicinity of the joint portions 52F (R) and 52F (L) and the pair disposed in the vicinity of the joint portions 52A (R) and 52A (L).
- a recess 76 is formed as the contact avoiding portion 70 so that a space is formed between each joint portion and the connecting portion.
- this vibration direction converter 50 will be described with reference to FIG.
- the stationary connection portion 53 ⁇ / b> C supported by the frame 12 functions as the stationary portion 100.
- the second is performed by the parallel link mechanism.
- the first link portions 51A (R), (L) and the third link portions 51C (R) forming the parallel links are raised while maintaining the parallel connection portion 53B and the connection portion 53E integrated therewith in a parallel state. ), (L) is changed so that the angle rises.
- the first link portion 51A (R) receives the reaction force from the stationary portion.
- (L) and the third link portions 51C (R), (L) are reliably changed, and the displacement of the joint portions 52A (R), (L) from the position X0 to the position X1 is determined by the diaphragm 10. Is reliably converted into a displacement from the position Z0 to the position Z1.
- the angle of the portions 51C (R) and (L) is reliably changed, and the displacement of the joint portions 52A (R) and (L) from the position X0 to the position X2 is changed from the position Z0 to the position Z2 of the diaphragm 10. Hence convert to
- (L) and the second connecting portion 53B are converted into vibrations in the Z-axis direction.
- the diaphragm 10 is supported in a wide range and is provided with vibrations having substantially the same phase and substantially the same amplitude. Therefore, the vibration of the voice coil support unit 40 with respect to the planar diaphragm 10 having a large area is provided. Can be transmitted in substantially the same phase.
- the vibration direction converter 50 has the connecting portions 53B, 53D (R), (L) and the third link portions 51C (R), (L) parallel to a pair in the width direction.
- the first link portions 51A (R) and (L) are formed in a bifurcated manner, and the joint portions 52C (R) and the second link portions 51B (R) and (L) are formed at intermediate portions thereof.
- (L) is formed, and the second link portions 51B (R), (L) and the connecting portion 53C are connected in parallel in a pair in the width direction 53B, 53D (R), (L), third. Between the link portions 51C (R) and (L).
- the link portion By forming the link portion with a single sheet-like (plate-like) component in this way, the diaphragm 10 can be supported and vibrated on the surface, so that the entire diaphragm 10 can be vibrated substantially in phase. It is possible to suppress divided vibration.
- the vibration direction conversion unit 50 of this embodiment refracts the entire plate-like member forming the link portion into a convex trapezoidal shape, and thus the first link portion 51A (R). , (L) and the second connecting portion 53B are formed, and the plate-like member is partially cut out and refracted into a concave shape so as to be fixed to the second link portions 51B (R), (L). 53C is formed.
- the vibration direction changing portion 50 is formed by bonding a plurality of (two) sheet-like (plate-like) parts 501, 502, In the sheet-like component 501, the first connecting portions 53A (R), (L), the first link portions 51A (R), (L), the second link portions 51B (R), (L), second The connecting portion 53B and the stationary connecting portion 53C are formed, and the connecting portion 53D, the third link portions 51C (R) and (L), and the connecting portion 53E are formed on the other sheet-like component 502.
- the connecting portions 53D (R), (L) and the third link portions 51C (R), (L) are connected along the first link portions 51A (R), (L) and the second connecting portion 53B.
- the sheet-like component 502 is formed with an opening 502A corresponding to the second link portions 51B (R) and (L) and the stationary connection portion 53C.
- the size of the opening 502A formed in the other sheet-like component 502 corresponding to the second link portions 51B (R), (L) and the stationary connection portion 53C in one sheet-like component 501 is as follows.
- the other sheet-like component 502 is formed so as to expand from one end to the inside. By doing so, the second link portions 51B (R), (L) and the immovable connecting portion 53C are prevented from coming into contact with other sheet-like parts 502, and the link mechanism moves smoothly. Can be made.
- the two parts 501 and 502 are connected with the continuous member 50P facing each other.
- the continuous member 50P can be integrated and the joint portion 52 can be smoothly refracted.
- a recess or notch 76 is formed as a contact avoidance portion 70 at a location close to the joint portion 52.
- an inclined surface as shown in FIG. 14C is formed at the end of each link part.
- the inclined surfaces are formed so as not to interfere with each other when the link portion is refracted at the joint portion, so that the link portion can be efficiently refracted at the joint portion.
- the above-described sheet-like component 502 is formed integrally with the end of the above-mentioned sheet-like component 501, and the folding line f is formed in the direction of the arrow.
- the vibration direction converter 50 shown in FIGS. 18 and 19 can be obtained.
- a resin material for forming the rigid member 50Q is laminated on the entire surface of the continuous member 50P, which is a sheet-like member, to form each joint portion and inclined surfaces on both sides thereof. It can be easily formed by performing V-shaped die cutting as much as possible, and then forming the notch 50S and the opening 502A described above and curing the resin material.
- the rigid member 50Q may be formed simultaneously with the resin material. At this time, it is preferable that a groove or a recess having a V-shaped cross section is formed in advance in a mold for molding the rigid member 50Q.
- a link mechanism of the vibration direction conversion unit 50 can be formed by using one integral part for the two opposing voice coil support units 40. Therefore, the assembly operation can be easily performed even when a speaker unit including a pair of drive units is formed. Further, by providing the immovable connecting portion 53C, the joint portion 52D (particularly with respect to the opposing vibration of the voice coil support portion 40 (the plurality of voice coil support portions 40 vibrate in opposite directions to each other). Even if R) and (L) are not supported by the frame 12, the positions of the joint portions 52D (R) and (L) are held constant, and this also leads to the speaker unit of the vibration direction changing unit. Can be simplified.
- the right first link portion 51A (R) and the third link portion 51C (R), and the left first link portion are used as the link mechanism. Since the parallel link is formed by 51A (L) and the third link portion 51C (L), the second connecting portion 53B fixed to the diaphragm 10 against the opposing vibration of the voice coil support portion 40 is Z. It can be translated stably along the axial direction. As a result, it is possible to apply stable vibration to the planar diaphragm 10.
- the voice coil is formed along the magnetic gap 20G formed along a direction different from the allowable vibration direction of the diaphragm 10.
- the support portion 40 vibrates, and the vibration is changed in direction by the vibration direction changing portion 50 and transmitted to the vibration plate 10, so that the vibration plate 10 is vibrated to generate the sound signal SS in the acoustic radiation direction SD. A sound corresponding to is emitted.
- the driving force of the magnetic circuit 20 or the vibration of the voice coil 30 is increased. This does not directly affect the size of the speaker unit 1U (1A, 1B) in the thickness direction (Z-axis direction). Therefore, it is possible to reduce the thickness of the speaker unit 1U (1A, 1B) while increasing the volume.
- the vibration direction conversion unit 50 converts the vibration direction of the voice coil support unit 40 and transmits it to the diaphragm 10 by a mechanical link mechanism, the vibration transmission efficiency is high.
- the angle change between the first link portion 51A and the second link portion 51B is caused by the vibration of the voice coil support portion 40 and the stationary portion 100. Since it is performed by the reaction force, the vibration from the voice coil support portion 40 can be transmitted to the diaphragm 10 more reliably. Thereby, good reproduction efficiency of the speaker unit 1U (1A, 1B) can be obtained.
- the position of the voice coil 30 or the end portion 40A of the voice coil support portion 40 and the vibration direction change are provided by providing the connecting portion 60.
- a step (interval) can be formed between the position of the end portion 50A of the portion 50.
- the width (height) of the magnetic circuit 20 in the Z-axis direction can be accommodated within the height of the vibration direction converter 50, and the height of the magnetic circuit 20 required for securing the driving force can be reduced.
- the speaker unit 1U (1A, 1B) can be thinned while ensuring sufficient.
- the required height of the vibration direction converting portion 50 (the length of the link portion 51) can be sufficiently secured.
- the amplitude of the diaphragm 10 can be made relatively large.
- the vibration of the voice coil support 40 can be stabilized by forming the bottom 61 of the connecting portion 60 so as to slide on the bottom 12A of the frame 12 or the stationary portion 100 with a predetermined gap. Is possible.
- the movement of the end of the vibration direction converter 50 can be performed linearly, and the movement of the end of the vibration direction converter 50 connected to the diaphragm 10 can be reliably and stabilized.
- the convex portion 510 is provided on the link portion where bending easily occurs due to the opposing vibration of the voice coil support portion 40 to increase the rigidity.
- the first link portions 51A (R), (L), the second link portions 51B (R), (L), the connecting portions 53D (R), (L), and the connecting portions 53C are convex.
- a portion 510 is provided.
- an opening 520 is provided in a link portion that does not particularly require strength, thereby reducing the weight of the vibration direction changing portion.
- an opening 520 is provided in the connecting portion 53B.
- the weight reduction of the vibration direction converter is particularly effective in widening the reproduction characteristics and increasing the amplitude and sound pressure level of the sound wave for a predetermined audio current.
- the speaker unit according to the embodiment of the present invention is provided in the stationary unit 100 with reference to the basic structure described above, the diaphragm 10 having the recess 10a, the stationary unit 100 that supports the vibrating body 10 so as to vibrate, And a drive unit 14 that vibrates the diaphragm 10 by an audio signal.
- the drive unit 14 receives a voice signal and vibrates in a direction different from that of the diaphragm 10, and the voice coil 30.
- 30 are disposed obliquely with respect to the vibration directions of the magnetic coils 20, 20 having the magnetic gaps 20 G, 20 G, the voice coils 30, 30 and the diaphragm 10, respectively.
- a rigid vibration direction converter 50 that transmits to the diaphragm 10 is provided.
- the voice coil 30 extends from one voice coil 30 of the plurality of voice coils 30, 30 toward the other voice coil 30, Terminal portions 81, 81 common to 30 are provided in the stationary portion 100.
- the terminal portion 81 is provided with a pair of terminal portions 81, and one end of each of the pair of voice coils 30 and 30 is connected to one terminal portion 81. The other ends of the pair of voice coils 30 and 30 are connected to the other terminal portion 81.
- the arrangement of the terminal portions can be saved compared to the case where the terminal portions are provided at one end and the other end of each voice coil 30, respectively. it can.
- the speaker unit can be reduced in size or thickness.
- terminal portions 81, 81 wirings (first wirings 80A) for electrically connecting the plurality of voice coils 30, 30 are formed.
- first wirings 80A for electrically connecting the plurality of voice coils 30, 30.
- the stationary part 100 of the speaker unit 1U is formed of a first component member 100A and a second component member 100B.
- the second component member 100 ⁇ / b> B is a frame disposed on the vibration direction conversion unit 50 side, and supports a part of the vibration direction conversion unit 50.
- the terminal portions 81 and 81 are disposed between the first component member 100A and the second component member 100B.
- the first component member 100 ⁇ / b> A is a frame disposed on the diaphragm 10 side, and supports the diaphragm 10 via the edge 11.
- the first component member 100A and the second component member 100B support the magnetic circuit 20, and the first component member 100A supports one magnetic pole member (yoke portion 22) of the magnetic circuit 20.
- the second component member 100B supports the other one-side magnetic pole member (yoke portion 22) of the magnetic circuit 20, so that the first component member 100A and the second component member 100B are coupled together.
- a magnetic gap having a predetermined interval is formed between them.
- the stationary portion 100 includes an outer peripheral frame portion 101 that surrounds the diaphragm 10 and a bridging portion 102 that bridges the inside of the outer peripheral frame portion 101.
- the bridging portion 102 includes the link mechanism 50L (vibration direction converting portion 50) described above. Is provided with rigidity in the vibration direction of the link mechanism 50L.
- the vibration is transmitted to the diaphragm 10 via the link mechanism 50L.
- the link mechanism 50L that converts the angle of the link portion 51 is counteracted by the vibration from the diaphragm 10. Receive power.
- the link mechanism 50L itself vibrates when the stationary part 100 supporting the link mechanism 50L bends, and unnecessary vibration is transmitted to the link portion 51. .
- the vibration transmitted to the link portion 51 is transmitted to the diaphragm 10, the vibration of the voice coil 30 cannot be efficiently transmitted to the diaphragm 10.
- the stationary part 100 includes a first constituent member (first frame) 100A and a second constituent member (second frame) 100B.
- the first component member 100A is a support member on the acoustic emission side of the speaker device 1B
- the second component member 100B is a support member on the opposite side (back side) to the acoustic emission side.
- the drive unit 14 of the speaker device 1 is supported so as to be sandwiched between the first component member 100A and the second component member 100B.
- the first component member 100 ⁇ / b> A includes an outer peripheral frame portion 101 formed in an annular shape, supports the outer periphery of the diaphragm 10 via the edge 11, and one side of the magnetic pole member (yoke portion) 22 of the magnetic circuit 20. (22B) is supported.
- the second component member 100B includes an outer peripheral frame portion 101 and a bridging portion 102, supports one side (22A) of the magnetic pole member (yoke portion) 22 of the magnetic circuit 20, and the bridging portion 102 is a link mechanism 50L. Support. At this time, the bridging portion 102 has rigidity against the force received from the diaphragm 10 via the link mechanism 50L.
- the compliance of the bridging portion 102 is substantially the same as or smaller than the compliance of the outer peripheral frame portion 101. More specifically, it is preferable that the thickness of the bridging portion 102 is substantially the same as or larger than the thickness of a part of the stationary portion 100 that supports the diaphragm 10 or the magnetic circuit 20.
- the bridging portion 102 provided in the second component member 100B is formed with a first projecting portion 102A that projects in the extending direction and the vibration direction of the diaphragm 10.
- the first protruding portion 102A has a rib structure formed along the longitudinal direction of the bridging portion 102, thereby increasing the bending rigidity of the bridging portion 102.
- a second projecting portion 102 ⁇ / b> B extending in a direction intersecting with the first projecting portion 102 ⁇ / b> A is formed in the plane of the bridging portion 102 facing the diaphragm 10.
- This 2nd protrusion part 102B becomes a reinforcement rib in the both ends of the bridge part 102, and the bridge part 102 is rigidly supported by the outer periphery frame part 101 at the both ends.
- the bridging portion 102 has a third protrusion 102C extending in a direction intersecting the first protrusion 102A and the second protrusion 102B in the plane of the stationary portion 100 facing the diaphragm 10.
- the reinforcing part 103 having a polygonal planar shape is formed by the plurality of second protrusions 102B and the third protrusions 102C.
- the first component member 100A and the second component member 100B that become the stationary portion 100 have a planar shape having a major axis O 1 and a minor axis O 2 , and the bridging portion 102 is along the minor axis O 2 direction. Is formed. Further, the bridging portion 102 can be formed along the major axis O 1 direction, or can be formed along the major axis ⁇ 1 direction and the minor axis ⁇ 2 direction.
- an opening 100F is formed by a recess formed in the opposing surface.
- the first component member 100A and the second component member 100B are formed with protruding portions 109 (109A, 109B) that support the terminal portions 81, 81, and the terminal portions 81, 81 protrude from the protruding portion 109A. It is sandwiched between the portion 109. As a result, the first component member 100A and the second component member 100B are coupled, and at the same time, the terminal portions 81 and 81 are stably fixed.
- the stationary portion 100 includes an outer peripheral frame portion 101 and a bottom surface portion 107 that surround the magnetic circuit 20, and the terminal portions 81 and 81 are formed along the outer peripheral frame portion 101, It is attached to the outer peripheral frame portion 101. Accordingly, the terminal portions 81 and 81 do not protrude outward from the outer peripheral frame portion 101 of the stationary portion 100, and the device can be made compact. Further, since the terminal portions 81 and 81 are attached to the outer peripheral frame portion 101, the terminal portions 81 and 81 are stably fixed, and poor connection with the voice coils 30 and 30 can be avoided.
- the terminal portions 81 and 81 are formed in a shape having a major axis extending from one voice coil 30 to the other voice coil 30 and a minor axis intersecting the major axis.
- the terminal portions 81 and 81 may be disposed inside the outer peripheral frame portion 101. According to this, the terminal portions 81 and 81 can be provided without affecting the shape and size of the outer peripheral edge of the speaker unit. it can. Moreover, you may arrange
- Each of the outer peripheral frame portions 101, 101 in the first component member 100A and the second component member 100B has the above-described opening portion 100F in the plane facing the voice coil 30, and the terminal portion 81, 81 is arranged.
- the terminal portions 81 and 81 are reinforcing portions that reinforce the opening portion 100F of the stationary portion 100.
- Connection portions 81a (see FIG. 26) with wirings 82 and 82 (second wiring 80A) electrically connected to the outside are formed in the terminal portions 81 and 81, and the wirings (first wirings) of the terminal portions 81 and 81 are formed.
- the first wiring 80A) and the wiring 82 (second wiring 80B) are electrically connected by the connecting portion 81a.
- the wiring 82 (second wiring 80A) is fixed to the side surface of the stationary part 100 and connected to the terminal parts 81 and 81.
- the outer peripheral frame portion 101 of the stationary portion 100 includes a side surface to which the wiring 82 (second wiring 80B) is attached, and guide portions 106 and 106 for guiding the wiring 82 and 82 are formed on the side surface of the stationary portion 100. Yes.
- FIG. 23 is a perspective view showing the internal structure of the speaker unit (a state in which the first component member 100A is removed), and FIG. 24 is a plan view showing the internal structure of the speaker unit (a state in which the second component member 100B is excluded).
- FIG. 25 is a perspective view showing the internal structure of the speaker unit (a state excluding the second component member 100B)
- FIG. 26 is a perspective view showing the internal structure of the speaker unit (an explanatory diagram of the connection state of wiring)
- FIG. FIG. 28 is a partially enlarged view showing the internal structure of the speaker unit, FIG. 28 is an explanatory view showing the attachment structure of the voice coil, and FIG.
- the yoke portion 22 of the magnetic circuit 20 is provided with a protruding portion 22p for supporting the yoke portion 22 on the first component member 100A and the second component member 100B. It is engaged with the receiving portion 105 provided on the constituent member 100A and the second constituent member 100B.
- Positioning pins 100P for positioning the terminal portions 81 and 81 are formed on one of the first component member 100A and the second component member 100B (see FIGS. 24 and 25). , 81 are inserted into the holes 81h (see FIG. 23), the terminal portion 81 is arranged at a predetermined position with respect to the stationary portion 100. Further, in the illustrated example, the terminal portions 81 and 81 have a concave portion 81b formed on the side portion, and the concave portion 81b engages with the convex portion 100B1 formed on the second component member 100B, thereby the terminal portion 81. , 81 are positioned on the second component member 100B.
- the voice coil 30 is formed in a flat plate shape with an annular conductive member, and this conductive member is supported by a rigid base (voice coil support portion 40).
- the voice coil 30 or the voice coil support portion 40 is unitized by the mounting unit 16 and is mounted between the first component member 100A and the second component member 100B. Further, the voice coil 30 or the voice coil support portion 40 is attached to the attachment unit 16 via the holding portion 15, and the attachment unit 16 is attached between the first component member 100A and the second component member 100B.
- the voice coil 30 or the voice coil support part 40 is held by the stationary part 100 via the holding part 15. Further, a connecting portion 60 is integrated with the mounting unit 16, and the voice coil 30 or the voice coil support portion 40 and the vibration direction changing portion 50 are connected via the connecting portion 60.
- a voice coil lead wire 32 (see FIG. 27) connected to the lead wire 31 is formed on the surface of the voice coil support portion 40 (base body) that supports the voice coil 30.
- the voice coil lead line 32 is a conductive layer 43 that is patterned on the outside of the conductive member of the voice coil 30 so that the voice coil lead line 32 is voiced.
- the conductive member of the coil 30 and the holding portion 15 are electrically connected to function as a relay line for inputting an audio signal to the conductive member of the voice coil 30.
- the holding portion 15 is formed with wiring (third wiring 80C) for electrically connecting the voice coil 30 and the terminal portion 81, and ends of the terminal portions 81 and 81 and wiring (third wiring 80C). Are electrically connected, the wiring of the holding portion 15 (third wiring 80C) and the voice coil lead wire 32 are connected, and the wiring 82 (second wiring 80B) is connected to the terminal portions 81 and 81. Thus, a voice signal is input to the voice coil 30 from the outside.
- This wiring (third wiring 80C) can be formed by using the holding portion 15 as a conductive member. Further, a separate wiring can be formed in the holding portion 15.
- the holding part 15 itself can also be formed using a wiring board. As for the connection between the wiring 82 (second wiring 80B) and the terminal portions 81 and 81, the end portion 82a of the wiring 82 and the connection portion 81a of the terminal portions 81 and 81 are electrically connected.
- the holding unit 15 is rigid in the vibration direction of the diaphragm 10 and has a shape that can be deformed in the vibration direction of the voice coil 30.
- the holding unit 15 has a side surface extending linearly along the vibration direction (X-axis direction) of the diaphragm 10 and has a curved cross-sectional shape in the vibration direction of the voice coil 30. . Accordingly, the holding unit 15 restricts the vibration of the voice coil 30 in one axial direction (X-axis direction), and the vibration in the other direction of the voice coil 30 is suppressed.
- the holding unit 15 holds the voice coil 30 on the stationary unit 100 directly or via another member so as to be able to vibrate in the vibration direction of the voice coil 30, and the first holding unit 15 (15 ⁇ / b> A) and The second holding unit 15 (15B) is provided.
- the first holding unit 15 (15A) is arranged on the vibration direction converting unit 50 side of the voice coil 30, and the second holding unit 15 (15B) is arranged on the opposite side to the vibration direction converting unit 50 of the voice coil 30.
- the first holding part 15 (15A) is arranged on the left and right of the connecting part 60 between the connecting part 60 and the stationary part 100, and the second holding part 15 (15B) is the connecting part 60 of the voice coil 30.
- the first holding part 15 (15A) and the second holding part (15B) are placed on the voice coil 30 in a substantially symmetrical manner.
- the part is held directly or via another member.
- the second holding portion 15 (15B) is held at its stationary portion directly or via another member, and its both ends are connected to the left and right ends of the voice coil.
- FIG. 28 is an explanatory view showing a voice coil mounting structure.
- the voice coil 30 around which the conductive member is wound is supported by the voice coil support unit 40, and the voice coil support unit 40 is held by the mounting unit 16 via the holding unit 15.
- a voice coil mounting portion 41a is opened in a base body 41 made of a flat insulating material, and one side of the opening is covered with a protective film 44.
- the voice coil mounting portion 41a has a voice coil mounting portion 41a.
- a coil 30 is attached.
- the outer ends of the pair of first holding portions 15 (15A) are connected to the mounting unit 16 at one end side of the mounting unit 16, and the inner ends of the pair of first holding portions 15 (15A). Is connected to the connecting portion 60. Further, a single second holding portion 15 (15B) is attached to the other end side of the attachment unit 16, and the central portion of the second holding portion 15 (15B) is connected to the attachment unit 16, and the second Both end portions of the second holding portion 15 (15B) are attached to both end portions 41B and 41C of the voice coil support portion 40. The end portion 41 ⁇ / b> A of the voice coil support portion 40 is connected to the connecting portion 60.
- the connecting part 60 is a member for connecting the voice coil 30 and the vibration direction changing part 50.
- the connection hole portion 16d is a fitting hole for connecting the attachment unit 16 to the stationary portion.
- FIG. 4A is a perspective view showing a single component 15 1 , 15 2
- FIG. 4B is a side view of the holding portion 15
- FIG. 4C is a plan view thereof.
- the constituent member 15 1 (15 2 ) of the holding portion 15 is in contact with each other at the flat plate portion F, includes the first curved portion W and the second curved portion Wa, includes the flat plate portions F and F at both ends, and Connection portions F1 and F2 are provided in a direction perpendicular to the flat plate portion F.
- the plurality of constituent members 15 1 and 15 2 are conductive metal members and are joined by welding.
- the plate members F are faced to each other and spot welding is performed thereon, thereby welding the constituent members 15 1 and 15 2 .
- spot welding is performed at a plurality of locations in each of the flat plate portions F and F at both ends (symbol s is a spot weld location).
- the connecting portion F1 of the holding portion 15 with the terminal portions 81 and 81 extends in a direction intersecting with the vibration direction (Z-axis direction) of the diaphragm 10, and is in a flat plate shape so as to contact the terminal portions 81 and 81. Is formed.
- the connecting portion F2 with the voice coil lead wire 32 of the holding portion 15 also extends in a direction intersecting with the vibration direction (Z-axis direction) of the diaphragm 10 so as to contact the end portion of the voice coil lead wire 43. It is formed in a flat plate shape.
- FIG. 30 to 32 are speaker units for driving the speaker vibrating body according to the embodiment of the present invention with the driving force of the magnetic circuit, and the first diaphragm a11 and the second vibration are driven by the vibration direction converter 50.
- FIG. A diaphragm connecting portion that connects the plates a12 is configured.
- a plurality of opposingly arranged diaphragms 10 (first diaphragm a11 and second diaphragm a12) are driven by a plurality of drive units a1U, a1U or one drive unit a1U.
- the 30 includes a plurality of drive units a1U, and the first diaphragm a11 and the second diaphragm a12 are attached to the outer peripheral surface of the frame 300 via the edge 11.
- two drive units a1U are arranged in opposite directions, and the stationary parts 100 are joined to each other directly or via another member, thereby forming a thin double-sided radiation type speaker unit 1U. is doing.
- the two drive units a1U are driven with one audio signal, vibrations propagating to both the drive units a1U and a1U at the time of driving cancel each other and stable driving can be realized.
- the thickness of the speaker device does not increase so much even if the two diaphragms are arranged in opposite directions and joined, and the depth (thickness) of the frame 300 does not increase. ) Can be obtained.
- the damping member 350 can be provided between drive unit a1U and a1U. According to this, since the vibration damping member 350 absorbs vibrations that are influenced by the drive units a1U, it is possible to realize more stable driving of the speaker unit 1U. Further, by providing a damping member, or by making the mass of the first diaphragm and the second diaphragm substantially the same, for example, by the reaction force received from the first diaphragm and the second diaphragm Unnecessary vibration generated in the diaphragm connecting portion, the stationary portion or the voice coil can be canceled. In addition, it is possible to generate substantially symmetrical vibrations in the speaker vibration body in the vibration direction of the first diaphragm, the second diaphragm, and the vibration direction of the voice coil, thereby suppressing the generation of unnecessary vibrations. it can.
- the vibration direction conversion unit 50 functioning as the diaphragm connecting part that connects the first diaphragm a11 and the second diaphragm a12 uses the link portion 51 as the first link.
- a second link portion 51B as a link mechanism 50L is provided between the first link portion 51A and the stationary portion 100, and the above-described restriction is applied to a portion of the stationary portion 100 that supports the second link portion 51B.
- a vibration member 350 is attached.
- the vibration damping member 350 is attached between the stationary parts 100 and 100 that support both the link mechanisms 50L and 50L, the vibration of the vibration direction changing part 50 is generated when the speaker device is driven.
- the reaction force applied to each link portion of the vibration direction conversion unit 50 received from the diaphragm 10 can be canceled out.
- the operation itself of the vibration direction conversion unit 50 is performed by causing the stationary units 100 and 100 that support both the vibration direction conversion units 50 and 50 to abut directly or through other members, thereby changing the position of the stationary units 100 and 100. Is less likely to occur, and a stable vibration direction changing operation can be realized.
- the stationary parts 100, 100 that support both the link mechanisms 50L, 50L may be a part of the frame or the diaphragm connecting part. When the stationary parts 100, 100 are a part of the diaphragm connecting part, they can be formed by a member constituting a link part, for example.
- the vibration damping member 350 attached between the stationary parts 100 and 100 described above has flexibility or relatively large compliance, and vibration of the voice coil 30 transmitted to the diaphragm 10 via the vibration direction changing part 50.
- the stationary part 100 resonates due to the vibration of the vibration direction converter 50, and the reproduction sound pressure frequency characteristics of the speaker unit 1U are disturbed. Problems such as harmonic distortion can be suppressed.
- the connecting portions 60 and 60 included in the drive units a1U and a1U may be directly connected, or may be connected via a vibration damping member 350. When the connection parts 60 and 60 are connected directly or via another member, generation
- the connecting portion 60 is provided between the voice coil side end portion of the vibration direction converting portion 50 and the end portion of the voice coil on the vibration direction converting portion 50 side, and the positions of both end portions along the vibration direction of the diaphragm 10. It is different. That is, the positions of both end portions of the diaphragm connecting portion functioning by the vibration direction converting portion 50 are positioned between the end portion on the voice coil side of the link connecting portion and the end portion on the link connecting portion side of the voice coil. There is provided a connecting portion 60 that is connected differently along the vibration direction. Moreover, the connection part 60 has the function of the link connection part a24.
- the pair of diaphragms 10 (the first diaphragm a11 and the second diaphragm a12) are vibrated by the link mechanism 50L of the vibration direction converter 50 of various forms that function as a diaphragm coupling part.
- a speaker unit 1U is shown.
- the voice coil 30 (30 1 , 30 2 ) held so as to freely vibrate in the X-axis direction is caused to vibrate or move away from the link portion 51 (51A, 51B, 51C, 51D) and the joint.
- a pair of diaphragms 10 are changed in direction by a vibration direction converter (diaphragm connecting part) 50 that forms a link mechanism 50L including portions 52 (52A, 52B, 52C, 52D, 52E, 52F). a11 and the second diaphragm a12) are driven.
- the voice coils 30 (30 1 , 30 2 ) are arranged in the magnetic gap 20G of the magnetic circuit 20 mounted on the mounting portion 12P in the frame 12.
- the voice coil 30 is held by a holding portion (not shown) in FIG. 9A, and the movement of the voice coil is regulated by a damper D in addition to the holding portion in FIG.
- the link portion 51 includes link portions 51E, 51F, 51G, 51H, and 51I in addition to the example shown in FIG.
- the configuration is the same as that shown in FIG. 31A except that the central portion has a concave shape.
- 32 (b) and 32 (c) the two voice coils 30 1 and 30 1 that vibrate in substantially the same direction and the two voice coils 30 that vibrate in substantially the same direction so as to be close to or separated from each other. 2 , 30 2 , and in the vibration direction conversion unit 50, the link mechanism including the first link portion 51 ⁇ / b> A and the second link portion 51 ⁇ / b> B is supported at the four corners of the rectangular fixed frame body 50 ⁇ / b> P.
- Voice coil 30 (30 1, 30 1, 30 2, 30 2) is arranged in the magnetic gap 20G of the magnetic circuit 20 corresponding thereto, a magnetic circuit 20 which is arranged close via the vibration damping member 350 joined Has been.
- the vibration direction converter (diaphragm connecting portion) 50 that vibrates the pair of diaphragms 10 (the first diaphragm a11 and the second diaphragm a12) has a voice coil 30.
- the vibration of the link portion 51 of the link mechanism 50L is performed substantially symmetrically with respect to the central axis described above, and the influence of the link portions 51 on each other can be offset. As a result, it is possible to suppress problems such as a resonance phenomenon caused by the vibration of the vibration direction converter 50.
- the speaker unit 1U can be regarded as a point sound source in a small frequency band. Therefore, the speaker unit 1U is satisfactorily low in the low frequency range without being affected by the output sound pressure characteristics in the low frequency range due to the influence of the area of the baffle plate (the area of a part of the frame 12 that supports the diaphragms 10 and 10 and surrounds the periphery). Playback sound can be provided.
- the reaction force applied to each link portion of the vibration direction conversion unit 50 received from the diaphragm 10 can be canceled.
- the voice coil 30 included in the speaker unit 1U may be directly connected to the voice coil support portion 40 or may be connected via a damping member 350 as shown in FIG. I do not care.
- the connection parts 60 and 60 are connected directly or via another member, generation
- a stationary part (frame 12) is disposed between the first diaphragm a11 and the second diaphragm a12, and the stationary part (frame 12) is magnetically coupled.
- Circuit 20 is supported.
- the voice coil support portion 40 functions as a link connecting portion of the diaphragm connecting portion. Therefore, a plurality of voice coils 30 are connected to one end side of the link connecting portion, and the link portions 51 and 52 change the angle by the vibration of the link connecting portion, so that the first diaphragm a11 and the second diaphragm are changed.
- the diaphragm a12 vibrates in conjunction with it.
- the voice coil 30 is held in a freely vibrating manner by the holding portion 15 as shown in FIGS. That is, the holding unit 15 includes a first holding unit 15A and a second holding unit 15B, and the first holding unit 15A is disposed on the diaphragm coupling unit side (vibration direction converting unit 50 side) of the voice coil 30, The second holding portion 15B is disposed on the opposite side of the diaphragm coupling portion (vibration direction converting portion 50 side) of the voice coil 30.
- the voice coil 30 (or voice coil support part 40) is a stationary part (the frame 12, the magnetic circuit 20 or the like) by an annular holding part 15 (b15) surrounding the voice coil 30 (or voice coil support part 40). ).
- one end part b30a provided with the holding
- To the other end b30b provided on the opposite side to the inner peripheral portion of the plurality of holding portions 15 (b15), and the outer peripheral portions of the plurality of holding portions 15 (b15) are stationary portions (frame 12). And the magnetic circuit 20).
- one end b30a of the voice coil 30 (or voice coil support 40) is disposed inside the magnetic circuit 20, and the other end b30b of the voice coil 30 (or voice coil support 40) is magnetic.
- the plurality of holding portions 15 (15b) are arranged outside the circuit 20 and inside and outside the magnetic circuit 20, and support the voice coil 30 on a stationary portion (the frame 12, the magnetic circuit 20, etc.). Yes.
- the holding portion 15 (b15) is provided with an attachment hole b15a into which the voice coil 30 (or the voice coil support portion 40) is inserted, and the voice coil 30 (or The end of the voice coil support 40) is inserted.
- the end of the voice coil 30 (or voice coil support portion 40) is inserted into the mounting hole b15a, as in FIG. 5A, and the voice coil 30 (or voice coil support portion) is inserted.
- a stopper b31 for retaining is fixed on the 40) side.
- a rigid voice coil ring b32 is fixed to the voice coil 30 (or voice coil support portion 40), and this voice coil ring b32 is fitted in the mounting hole b15a. .
- FIG. 34 is an explanatory diagram showing a form example of the holding unit 15 (b15) described above.
- the outer peripheral portion b15b has a rectangular corrugation configuration, and the above-described mounting hole b15a is formed at the center position.
- FIG. 5B shows a shape of a butterfly damper in which the outer peripheral portion b15b is rectangular and the elastic support portion b15c supports a portion where the attachment hole b15a is formed.
- FIG. 5C shows a corrugation configuration in which the outer peripheral portion b15b is closed (circular, oval, elliptical, etc.) and the mounting hole b15a is provided.
- a hard portion whose outer periphery is similar to the ridgeline formed at the top of the corrugation may be formed around the attachment hole b15.
- the hard part is formed of, for example, a hard resin member, or when the holding part 15 is formed of a fiber member such as a nonwoven fabric or a woven fabric, a resin member such as a phenol resin is mixed with the fiber member. It can be formed by impregnation.
- the holding unit 15 is not limited to the illustrated example, and the end or inner peripheral portion of the holding unit 15 on the voice coil 30 side is attached to the edge of the voice coil 30 that faces the side surface of the stationary unit.
- the outer peripheral portion may be attached to the stationary portion.
- Such a holding part 15 can be formed of a fiber member, a fiber member impregnated with a resin member, a resin member, or a metal member having elasticity.
- FIG. 35 shows the structure of the speaker device a1C including the speaker unit 1U shown in FIGS. 30 to 32 (FIG. 35A) and the sound pressure frequency characteristics (FIG. 35B): the horizontal axis is frequency Hz and the vertical axis Is an explanatory view showing sound pressure dB).
- the space surrounded by the first diaphragm a11, the second diaphragm a12, the edge a14, and the diaphragm support part a15 may be substantially sealed, and a sound emitting part is provided in a cabinet a50S described later. You may provide the duct which has.
- the speaker unit 1U shown in FIGS. 30 to 32 can be mounted on various cabinets to form a speaker device a1C. In the illustrated example, the speaker unit 1U is mounted on a cabinet a50 that supports at least a passive vibrator a101 having a diaphragm.
- a speaker unit 1U having two acoustic radiation surfaces is mounted on a sub-cabinet a50s, and a cabinet a50 having a passive vibrator a101 is provided on the outside thereof, and one acoustic radiation of the speaker unit 1U is provided.
- the surface of the speaker unit 1U faces the outside of the cabinet a50, faces the same side as the acoustic radiation surface of the passive vibrator a101, and the other acoustic radiation surface of the speaker unit 1U faces the inside of the cabinet a50.
- the passive vibrator a101 is provided as a passive radiator is shown, but a duct may be provided instead of the passive vibrator a101.
- the inner peripheral portion of the edge may be disposed on the upper surface side or the lower surface side of the passive vibrator a101, and the outer peripheral portion of the edge may be disposed on the upper surface side or the lower surface side of the cabinet a50.
- the speaker unit 1U can vibrate the diaphragm 10 (the first diaphragm a11 and the second diaphragm a12) with substantially the same amplitude so as to be close to or away from each other. Can be forced to vibrate with a change in pressure. At this time, especially in the band below the anti-resonance frequency, the vibration of the outward diaphragm of the speaker unit 1U and the vibration of the passive vibrator a101 are substantially in phase, as in the speaker device a1 (a1A, a1B) described above. Can be. As a result, a speaker system effective for ultra-low frequency reproduction can be obtained. At this time, since one acoustic radiation surface of the speaker unit 1U faces outward, reproduction in a band from a low frequency range to a mid frequency range is possible.
- the speaker unit 1U accurately connects the two diaphragms 10 and 10 (the first diaphragm a11 and the second diaphragm a12) by connecting the link mechanism of the vibration direction conversion unit 50 that functions as a diaphragm connecting unit. It can be vibrated in the opposite direction with the same amplitude.
- the sound pressure frequency characteristic of the speaker device a1C is a characteristic c obtained by combining the characteristic a of the speaker unit 1U and the characteristic b of the passive vibrator a101, as shown in FIG. It can be raised effectively.
- FIG. 36 shows an example in which the speaker device a1 (a1A, a1B, a1C) is mounted on an attache case-shaped bag. Side portions of the speaker devices a1 and a1 are connected to the case portion Ba by a hinge Ba1, and when the fastener portion Ba2 is opened from the portable state of FIG. 5A, as shown in FIG. Then, the speaker devices a1 and a1 are doubled to expose the speaker vibrating body a100 and the speaker unit a200, which are passive vibrators, and the high frequency speaker unit (tweeter) tw as necessary.
- the speaker devices a1 and a1 are doubled to expose the speaker vibrating body a100 and the speaker unit a200, which are passive vibrators, and the high frequency speaker unit (tweeter) tw as necessary.
- the case Ba functions as a container, but it is also possible to arrange electronic devices (cell phones, portable display devices (TVs), radios, disk playback devices, tape playback devices and other audio devices).
- the hinge Ba1 can be provided with an energization function capable of transmitting an audio signal, and the audio signal can be input from the audio device to the speaker device a1 to generate a reproduced sound.
- FIG. 37 shows an example in which the speaker device a1 (a1A, a1B, a1C) is mounted on the rear tray Ca of the automobile.
- the thin speaker device a1 itself can be used as the rear tray Ca, or the speaker device a1 can be incorporated into a part of the rear tray Ca.
- a speaker vibrating body a100, a speaker unit a200, and one or a plurality of high-frequency speaker units (tweeters) tw are provided as necessary.
- FIG. 38 shows an example in which box-type speaker devices a1 (a1A, a1B, a1C) are stacked.
- Each speaker device a1 is connected by a speaker connector and connecting rod a1n when stacked, and this speaker connector and connecting rod a1n serves as an audio signal path between the speaker devices a1.
- FIG. 2A shows a state before connection
- FIG. 2B shows a state after connection.
- a speaker vibrating body a100, a speaker unit a200, and, if necessary, a high-frequency speaker unit (tweeter) tw are provided on the front surface of the box.
- FIG. 39 shows an example of an electronic device in which a plurality of speaker devices a1 are connected to be foldable.
- the speaker device a1 is connected at its end with a hinge Da so that the unfolded state shown in FIG. 11A or the folded state shown in FIG.
- the hinge Da is also a signal path between the speaker devices a1. When used, it can be unfolded and used in a wall-mounted state or in a standing state in a car or indoor, and can be folded and compactly carried as shown in FIG. It is like that.
- a speaker vibrating body a100, a speaker unit a200, and a high-frequency speaker unit (tweeter) tw are provided on the front surface when deployed.
- FIG. 40 is an explanatory view showing a configuration example of a speaker device a1D including the speaker unit 1U shown in FIGS. 30 to 32 (FIG. 40A is a perspective view, and FIG. 40B is a longitudinal sectional view). is there.
- the speaker unit 1U is installed in the cabinet c50.
- the speaker unit 1U having two acoustic radiation surfaces is attached to a gabnet c50 having two acoustic radiation ports c51 and c51, and the two diaphragms 10 and 10 are directed to the two acoustic radiation ports c51 and c51, respectively. ing.
- the acoustic radiation ports c51 and c51 have acoustic reflection surfaces c51a and c51a, respectively, and the sound radiated from the diaphragms 10 and 10 is reflected by the acoustic reflection surfaces c51a and c51a and radiated from the acoustic radiation ports c51 and c51. .
- Such a speaker device can be effectively used for various electronic devices and in-vehicle use.
- the speaker device 1 is housed in a housing as a mounting member included in an electronic device such as a mobile phone or a portable information terminal, or an electronic device such as a flat panel display, or a housing as a mounting member of the electronic device. Even if the speaker device 1 is attached to the side of the body, the thickness space required for the installation of the speaker device 1 can be reduced, so that the entire electronic device can be made thinner. In addition, sufficient audio output can be obtained even in a thin electronic device.
- the use of a speaker device in an automobile makes it possible to expand the interior space.
- the speaker device according to the embodiment of the present invention is attached to a door panel, ceiling, rear tray, or dashboard as a member to be attached, the protrusion to the interior space can be made relatively small, and the driver's operation space can be increased, It becomes possible to expand the space.
- an electronic device as shown in FIG. 40 may be attached to a mounted member such as a rear tray, and a desired sound field is formed in the car according to the number of passengers and the boarding position. be able to.
- a hotel (inn) or training that can accommodate a large number of people, such as a house (building) intended for the residence of people, a meeting, a lecture, a party, etc.
- buildings when the speaker device 1 is installed on a wall or ceiling as a member to be attached, the thickness space required for the installation of the speaker device a1 can be reduced, so unnecessary space in the room can be deleted, Space can be used effectively.
- projectors and large-screen TVs, etc. there have been examples of providing living rooms with audio / video equipment, while living rooms without audio / video equipment have been provided. In some cases, etc. are used as theater rooms.
- the speaker device a1 Even in such a case, by using the speaker device a1, it is possible to easily convert a living room or the like into a theater room and to effectively use the space in the living room.
- positioning location of speaker apparatus a1, the ceiling, wall, etc. (attachment member) in a living room are mentioned, for example.
- the speaker device a1 is listed.
- Pachinko as a sound reproduction means to inform the user of the operating state of household appliances such as refrigerators, washing machines, bathroom water heater control panels, microwave ovens, air conditioners, watches, rice cookers, oil fan heaters, etc.
- sound generating means for enhancing the effect of a slot machine or other gaming machine or entertainment device headphones, earphones, hearing aids, musical instrument speakers, loudspeakers, studio speakers, hall speakers, karaoke speakers, etc.
- the device a1 can be effectively applied.
- the speaker device a1 can be attached to a predetermined attached member such as a road wall as a blocking mechanism for blocking external sound used in a road noise reduction system. Furthermore, the speaker device a1 can be used as a vibration generating device, and the speaker device a1 can also be effectively used as a body sensation actuator (body sonic etc.).
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Abstract
Description
なお、前述の一体形成に関する技術は、2005年5月12日に米国出願されたUS20050127233(公開番号:US2005/253298)、2005年5月13日に米国出願されたUS20050128232(公開番号:US2005/253299)に記載されており、本願は前記の公報に記載される内容を援用する。
また、双方のリンク機構50L,50Lを支持する静止部100,100はフレーム、又は振動板連結部の一部であっても構わない。静止部100、100が振動板連結部の一部である場合には、例えばリンク部分を構成する部材で形成することができる。
Claims (44)
- 駆動部の動作によって振動するスピーカ用振動体であって、
前記駆動部を支持する静止部に振動自在に支持される複数の振動板と、
前記複数の振動板のうち、対面する第1の振動板と第2の振動板との間に設けられ、前記第1の振動板と前記第2の振動板を連結して互いに近接又は離間するように連動させる振動板連結部とを備えることを特徴とするスピーカ用振動体。 - 前記振動板連結部は、前記第1の振動板と前記第2の振動板の間に基準面を備え、前記基準面に対して前記第1の振動板と前記第2の振動板が互いに近接又は離間し、
前記基準面は、前記第1の振動板と前記第2の振動板の近接又は離間に対して実質的に静止しており、前記第1の振動板及び前記第2の振動板の一体的な振動に対しては共に振動することを特徴とする請求項1記載のスピーカ用振動体。 - 前記振動板連結部は、剛性のリンク部分によって形成されるリンク機構を備えることを特徴とする請求項2記載のスピーカ用振動体。
- 前記リンク機構は、前記リンク部分と前記振動板との間に形成されて屈折又は屈曲自在な関節部分を備えることを特徴とする請求項3記載のスピーカ用振動体。
- 前記リンク部分は、前記第1の振動板側の一端と他端に関節部分を有する第1のリンク部分と、前記第2の振動板側の一端と他端に関節部分を有する第2のリンク部分を備え、
前記リンク機構は、前記第1の振動板又は前記第2の振動板の振動によって前記第1のリンク部分及び前記第2のリンク部分が角度を変更するように前記第1のリンク部分の他端と前記第2のリンク部分の他端とを連結するリンク連結部分を備えることを特徴とする請求項4記載のスピーカ用振動体。 - 前記第1のリンク部分と前記第2のリンク部分は前記振動板の振動方向に対して互いに逆方向に傾斜して設けられ、前記リンク連結部分は前記振動板の振動方向と交差する方向に移動自在に設けられることを特徴とする請求項5記載のスピーカ用振動体。
- 前記第1のリンク部分の他端及び前記第2のリンク部分の他端と前記リンク連結部分との間には屈曲又は屈折自在な関節部分が形成されていることを特徴とする請求項6記載のスピーカ用振動体。
- 前記第1の振動板の外周部及び前記第2の振動板の外周部は、前記第1の振動板と前記第2の振動板で挟まれる空間を囲む筒状の振動板支持部に振動自在に支持されていることを特徴とする請求項7記載のスピーカ用振動体。
- 前記振動板の外周部はエッジを介して前記振動板支持部に支持されていることを特徴とする請求項8記載のスピーカ用振動体。
- 前記振動板連結部のリンク機構は、前記第1の振動板と前記第2の振動板の間の中心軸に対して略対称に形成されていることを特徴とする請求項9記載のスピーカ用振動体。
- 前記リンク部分は、前記関節部分を介して前記振動板を含む被取付部材に連結しており、
前記被取付部材の前記関節部分に近接した前記リンク部分側の面には、前記関節部分と接触することを避ける接触回避部が形成されていることを特徴とする請求項10記載のスピーカ装置。 - 前記リンク部分は、前記関節部分を介して前記振動板を含む被取付部材に連結する連結部分を有し、
前記連結部は前記被取付部材に接着部材で接着されており、
前記被取付部材の前記関節部分に対向した前記リンク部分側の面には、前記接着部材を前記関節部分に付着させることなく収容する接着部材収容部が形成されていることを特徴とする請求項10記載のスピーカ装置。 - 前記関節部分は、当該関節部分を跨いだ両側の部分で連続する屈折自在な連続部材で形成されていることを特徴とする請求項11記載のスピーカ装置。
- 前記第1のリンク部分と前記第2のリンク部分は、それぞれ複数の略平行なリンク部分を備えることを特徴とする請求項13記載のスピーカ用振動体。
- 前記第1のリンク部分と前記第2のリンク部分は、それぞれ一対の逆向きに傾斜したリンク部分を備えることを特徴とする請求項14記載のスピーカ用振動体。
- 請求項13記載のスピーカ用振動体と、前記駆動部と、前記静止部としてのキャビネットとを備え、
前記振動板支持部は前記キャビネットに支持されていることを特徴とするスピーカ装置。 - 前記振動板連結部は、前記リンク連結部の移動を許容する保持部を介して前記キャビネット側に支持されていることを特徴とする請求項16に記載のスピーカ装置。
- 前記スピーカ用振動体は受動型振動体であり、
前記駆動部は、前記スピーカ用振動体とは異なる位置で前記キャビネットに支持されるスピーカユニットであり、
前記スピーカユニットの駆動によって、前記スピーカユニットの音響放射面とは逆側に発生する空気圧が前記スピーカ用振動体を駆動させることを特徴とする請求項17記載のスピーカ装置。 - 前記第1の振動板と前記第2の振動板は、互いに逆向きの方向に、略同じ振幅で振動することを特徴とする請求項18記載のスピーカ装置。
- 前記リンク連結部分は前記振動板の振動方向に交差する方向に振動自在に前記静止部に支持されていることを特徴とする請求項19記載のスピーカ装置。
- 前記スピーカユニットは、
前記静止部としてのフレームと、当該フレームに支持される振動板と、当該振動板に支持されるボイスコイルと、当該ボイスコイルの一部が配置される磁気ギャップを有し前記フレームに支持される磁気回路とを備え、
前記振動板の外周がエッジを介して前記フレームに支持され、
前記ボイスコイルは前記振動板に連結されるボイスコイル支持部に支持されていることを特徴とする請求項20に記載のスピーカ装置。 - 前記駆動部は、
前記振動板連結部に直接又は他の部材を介して連結されるボイスコイルと、
当該ボイスコイルの一部が配置される磁気ギャップを有し前記静止部に支持される磁気回路とを備え、
前記ボイスコイルの振動は、前記振動板連結部を介して前記スピーカ用振動体の振動板を振動させることを特徴とする請求項17に記載のスピーカ装置。 - 前記ボイスコイルは前記振動板連結部のリンク連結部分に直接又は他の部材を介して連結され、前記ボイスコイルの振動は前記リンク連結部分を前記スピーカ用振動体における前記振動板の振動方向と交差する方向に振動させ、前記リンク部分を角度変更させることを特徴とする請求項22記載のスピーカ装置。
- 前記第1の振動板と前記第2の振動板の間に前記静止部が配置され、
前記静止部に前記磁気回路が支持され、
前記リンク連結部分の振動によって前記リンク部分が角度変更することで、前記第1の振動板と前記第2の振動板が連動して振動することを特徴とする請求項23記載のスピーカ装置。 - 前記キャビネットに支持される少なくとも振動板を有する受動型振動体を備え、
前記第1の振動板は、音波を放射する音響放射面を備え、
前記第1の振動板に対して前記キャビネット側に配置される前記第2の振動板は、前記受動型振動体を駆動させる駆動力放出面を備えることを特徴とする請求項24記載のスピーカ装置。 - 前記第2の振動板は、音響調整部材で構成されていることを特徴とする請求項25記載のスピーカ装置。
- 前記音響調整部材は、前記第1の振動板に対して大きい重さを有する部材、又は複数の開口部を有する部材であることを特徴とする請求項26記載のスピーカ装置。
- 前記振動板連結部における前記リンク連結部分の前記ボイスコイル側の端部と前記ボイスコイルの前記リンク連結部分側の端部との間には、両端部の位置を前記振動板の振動方向に沿って異ならせて連結する連結部が設けられることを特徴とする請求項24記載のスピーカ装置。
- 前記連結部は、前記リンク連結部分を含むことを特徴とする請求項28に記載のスピーカ装置。
- 前記リンク連結部分の一端側には複数のボイスコイルが接続されることを特徴とする請求項29記載のスピーカ装置。
- 前記ボイスコイルは、平板状で且つ環状に巻かれた導電部材と、前記導電部材を支持する剛性の基体とを備え、
前記基体における前記導電部材の外側の表面には、導電層がパターン形成されていることを特徴とする請求項22に記載のスピーカ装置。 - 前記導電層は、前記導電部材を取り囲むように一対配備され、前記導電部材に音声信号を入力するための中継線として機能することを特徴とする請求項31記載のスピーカ装置。
- 前記ボイスコイルを前記静止部に直接又は他の部材を介して振動自在に保持する保持部を備えることを特徴とする請求項32記載のスピーカ装置。
- 前記保持部は第1の保持部と第2の保持部を備え、前記第1の保持部は前記ボイスコイルの前記振動板連結部側に配置され、前記第2の保持部は前記ボイスコイルの前記振動板連結部とは逆側に配置されていることを特徴とする請求項33に記載のスピーカ装置。
- 前記ボイスコイルは、当該ボイスコイルを囲む環状の保持部にて前記静止部に保持されていることを特徴とする請求項32記載のスピーカ装置。
- 前記保持部を複数備え、
前記ボイスコイルが有する前記振動板連結部側に設けられる一方の端部と、前記振動板連結部に対して逆側に設けられる他方の端部に、前記保持部の内周部が取り付けられ、前記保持部の外周部は前記静止部に取り付けられていることを特徴とする請求項35記載のスピーカ装置。 - 前記保持部の内周部は、前記ボイスコイルが有する前記静止部の側面に対向する端縁に取り付けられ、
前記保持部の外周部は、前記静止部に取り付けられていることを特徴とする請求項36記載のスピーカ装置。 - 前記ボイスコイルの一方の端部は、前記磁気回路に対して内側に配置され、
前記ボイスコイルの他方の端部は、前記磁気回路に対して外側に配置され、
前記磁気回路に対して内側及び外側にて、複数の前記保持部は前記ボイスコイルを前記静止部としてのフレームに支持していることを特徴とする請求項37に記載のスピーカ装置。 - 前記保持部は、繊維系部材、樹脂部材、又は弾性を有する金属部材で形成されていることを特徴とする請求項33に記載のスピーカ装置。
- 請求項16に記載のスピーカ装置を備えることを特徴とする電子機器。
- 請求項16に記載のスピーカ装置を備えることを特徴とする自動車。
- 請求項16に記載のスピーカ装置を備えることを特徴とする建築物。
- 前記振動板は平板状に形成されると共に、当該振動板の振動方向にて剛性を備えることを特徴とする請求項10に記載のスピーカ用振動体。
- 前記振動板側に配置される前記リンク部分の一端は、剛性を備えることを特徴とする請求項43に記載のスピーカ用振動体。
Priority Applications (5)
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CN2009801330275A CN102172045A (zh) | 2009-12-25 | 2009-12-25 | 扬声器用振动体、扬声器装置 |
JP2010528237A JPWO2011077560A1 (ja) | 2009-12-25 | 2009-12-25 | スピーカ用振動体、スピーカ装置 |
PCT/JP2009/071639 WO2011077560A1 (ja) | 2009-12-25 | 2009-12-25 | スピーカ用振動体、スピーカ装置 |
US13/062,894 US8235167B2 (en) | 2009-12-25 | 2009-12-25 | Vibrating body for speaker and speaker device |
EP09849080A EP2519028A1 (en) | 2009-12-25 | 2009-12-25 | Speaker vibrator and speaker device |
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PCT/JP2009/071639 WO2011077560A1 (ja) | 2009-12-25 | 2009-12-25 | スピーカ用振動体、スピーカ装置 |
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EP (1) | EP2519028A1 (ja) |
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CN102883250A (zh) * | 2011-07-15 | 2013-01-16 | 株式会社福尔 | 平面型扬声器 |
WO2014091598A1 (ja) * | 2012-12-13 | 2014-06-19 | パイオニア株式会社 | スピーカ装置 |
WO2014162545A1 (ja) * | 2013-04-03 | 2014-10-09 | パイオニア株式会社 | スピーカ装置 |
WO2014162544A1 (ja) * | 2013-04-03 | 2014-10-09 | パイオニア株式会社 | スピーカ装置 |
JP2021506159A (ja) * | 2017-12-11 | 2021-02-18 | メイト ホールディング ビー.ブイ. | 分散型トランスデューササスペンションコーン(dtsc) |
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JPWO2011046030A1 (ja) * | 2009-10-15 | 2013-03-07 | パイオニア株式会社 | スピーカ装置 |
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Cited By (7)
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CN102883250A (zh) * | 2011-07-15 | 2013-01-16 | 株式会社福尔 | 平面型扬声器 |
WO2014091598A1 (ja) * | 2012-12-13 | 2014-06-19 | パイオニア株式会社 | スピーカ装置 |
WO2014162545A1 (ja) * | 2013-04-03 | 2014-10-09 | パイオニア株式会社 | スピーカ装置 |
WO2014162544A1 (ja) * | 2013-04-03 | 2014-10-09 | パイオニア株式会社 | スピーカ装置 |
JP2021506159A (ja) * | 2017-12-11 | 2021-02-18 | メイト ホールディング ビー.ブイ. | 分散型トランスデューササスペンションコーン(dtsc) |
JP7236629B2 (ja) | 2017-12-11 | 2023-03-10 | メイト ホールディング ビー.ブイ. | 分散型トランスデューササスペンションコーン(dtsc) |
JP7236629B6 (ja) | 2017-12-11 | 2023-03-28 | メイト ホールディング ビー.ブイ. | 分散型トランスデューササスペンションコーン(dtsc) |
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EP2519028A1 (en) | 2012-10-31 |
CN102172045A (zh) | 2011-08-31 |
JPWO2011077560A1 (ja) | 2013-05-02 |
US8235167B2 (en) | 2012-08-07 |
US20110232990A1 (en) | 2011-09-29 |
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